Move codec code out of omx plugin directories
separate actual codec code for amrnb, amrwb, m4v_h263, and mp3dec from
the OMX plugins.
Bug: 147679485
Test: build
Change-Id: I8b6005384872e667cdcf5f700a848beba355a395
diff --git a/media/codecs/amrnb/dec/Android.bp b/media/codecs/amrnb/dec/Android.bp
new file mode 100644
index 0000000..944ff75
--- /dev/null
+++ b/media/codecs/amrnb/dec/Android.bp
@@ -0,0 +1,106 @@
+cc_library_static {
+ name: "libstagefright_amrnbdec",
+ vendor_available: true,
+ host_supported: true,
+ min_sdk_version: "29",
+
+ srcs: [
+ "src/a_refl.cpp",
+ "src/agc.cpp",
+ "src/amrdecode.cpp",
+ "src/b_cn_cod.cpp",
+ "src/bgnscd.cpp",
+ "src/c_g_aver.cpp",
+ "src/d1035pf.cpp",
+ "src/d2_11pf.cpp",
+ "src/d2_9pf.cpp",
+ "src/d3_14pf.cpp",
+ "src/d4_17pf.cpp",
+ "src/d8_31pf.cpp",
+ "src/d_gain_c.cpp",
+ "src/d_gain_p.cpp",
+ "src/d_plsf.cpp",
+ "src/d_plsf_3.cpp",
+ "src/d_plsf_5.cpp",
+ "src/dec_amr.cpp",
+ "src/dec_gain.cpp",
+ "src/dec_input_format_tab.cpp",
+ "src/dec_lag3.cpp",
+ "src/dec_lag6.cpp",
+ "src/dtx_dec.cpp",
+ "src/ec_gains.cpp",
+ "src/ex_ctrl.cpp",
+ "src/if2_to_ets.cpp",
+ "src/int_lsf.cpp",
+ "src/lsp_avg.cpp",
+ "src/ph_disp.cpp",
+ "src/post_pro.cpp",
+ "src/preemph.cpp",
+ "src/pstfilt.cpp",
+ "src/qgain475_tab.cpp",
+ "src/sp_dec.cpp",
+ "src/wmf_to_ets.cpp",
+ ],
+
+ export_include_dirs: ["src"],
+
+ cflags: [
+ "-DOSCL_UNUSED_ARG(x)=(void)(x)",
+ "-DOSCL_IMPORT_REF=",
+
+ "-Werror",
+ ],
+
+ //sanitize: {
+ // misc_undefined: [
+ // "signed-integer-overflow",
+ // ],
+ //},
+
+ shared_libs: [
+ "libstagefright_amrnb_common",
+ "liblog",
+ ],
+
+ target: {
+ darwin: {
+ enabled: false,
+ },
+ },
+}
+
+//###############################################################################
+cc_test {
+ name: "libstagefright_amrnbdec_test",
+ gtest: false,
+ host_supported: true,
+
+ srcs: ["test/amrnbdec_test.cpp"],
+
+ cflags: ["-Wall", "-Werror"],
+
+ local_include_dirs: ["src"],
+
+ static_libs: [
+ "libstagefright_amrnbdec",
+ "libsndfile",
+ ],
+
+ shared_libs: [
+ "libstagefright_amrnb_common",
+ "libaudioutils",
+ "liblog",
+ ],
+
+ target: {
+ darwin: {
+ enabled: false,
+ },
+ },
+
+ //sanitize: {
+ // misc_undefined: [
+ // "signed-integer-overflow",
+ // ],
+ //},
+}
diff --git a/media/codecs/amrnb/dec/MODULE_LICENSE_APACHE2 b/media/codecs/amrnb/dec/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/media/codecs/amrnb/dec/MODULE_LICENSE_APACHE2
diff --git a/media/codecs/amrnb/dec/NOTICE b/media/codecs/amrnb/dec/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/media/codecs/amrnb/dec/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2005-2008, The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
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+
+ "Legal Entity" shall mean the union of the acting entity and all
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+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
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+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
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+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
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+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
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+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
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+ defend, and hold each Contributor harmless for any liability
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+
+ END OF TERMS AND CONDITIONS
+
diff --git a/media/codecs/amrnb/dec/src/a_refl.cpp b/media/codecs/amrnb/dec/src/a_refl.cpp
new file mode 100644
index 0000000..5a47510
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/a_refl.cpp
@@ -0,0 +1,317 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm-amr/c/src/a_refl.c
+ Functions: a_refl
+
+ Date: 02/05/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removing unneeded include files and the goto statement.
+
+
+ Description: Changed function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Using inline functions from basic_op.h .
+ Removing unneeded include files.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#define LOG_TAG "a_refl"
+#include <log/log.h>
+
+#include "a_refl.h"
+#include "typedef.h"
+#include "cnst.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS [optional]
+; [Define module specific macros here]
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES [optional]
+; [Include all pre-processor statements here. Include conditional
+; compile variables also.]
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; [List function prototypes here]
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; [Variable declaration - defined here and used outside this module]
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: AMREncode
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ a[] = pointer to directform coefficients of type Word16
+ refl[] = pointer to reflection coefficients of type Word16
+
+ Outputs:
+ pOverflow = 1 if overflow exists in the math operations else zero.
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ File : a_refl.c
+ Purpose : Convert from direct form coefficients to
+ reflection coefficients
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ [1] a_refl.c , 3GPP TS 26.101 version 4.1.0 Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+void A_Refl(
+ Word16 a[], // i : Directform coefficients
+ Word16 refl[] // o : Reflection coefficients
+)
+{
+ // local variables
+ Word16 i,j;
+ Word16 aState[M];
+ Word16 bState[M];
+ Word16 normShift;
+ Word16 normProd;
+ Word32 L_acc;
+ Word16 scale;
+ Word32 L_temp;
+ Word16 temp;
+ Word16 mult;
+
+ // initialize states
+ for (i = 0; i < M; i++)
+ {
+ aState[i] = a[i];
+ }
+
+ // backward Levinson recursion
+ for (i = M-1; i >= 0; i--)
+ {
+ if (sub(abs_s(aState[i]), 4096) >= 0)
+ {
+ goto ExitRefl;
+ }
+
+ refl[i] = shl(aState[i], 3);
+
+ L_temp = L_mult(refl[i], refl[i]);
+ L_acc = L_sub(MAX_32, L_temp);
+
+ normShift = norm_l(L_acc);
+ scale = sub(15, normShift);
+
+ L_acc = L_shl(L_acc, normShift);
+ normProd = pv_round(L_acc);
+
+ mult = div_s(16384, normProd);
+
+ for (j = 0; j < i; j++)
+ {
+ L_acc = L_deposit_h(aState[j]);
+ L_acc = L_msu(L_acc, refl[i], aState[i-j-1]);
+
+ temp = pv_round(L_acc);
+ L_temp = L_mult(mult, temp);
+ L_temp = L_shr_r(L_temp, scale);
+
+ if (L_sub(L_abs(L_temp), 32767) > 0)
+ {
+ goto ExitRefl;
+ }
+
+ bState[j] = extract_l(L_temp);
+ }
+
+ for (j = 0; j < i; j++)
+ {
+ aState[j] = bState[j];
+ }
+ }
+ return;
+
+ExitRefl:
+ for (i = 0; i < M; i++)
+ {
+ refl[i] = 0;
+ }
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void A_Refl(
+ Word16 a[], /* i : Directform coefficients */
+ Word16 refl[], /* o : Reflection coefficients */
+ Flag *pOverflow
+)
+{
+ /* local variables */
+ Word16 i;
+ Word16 j;
+ Word16 aState[M];
+ Word16 bState[M];
+ Word16 normShift;
+ Word16 normProd;
+ Word32 L_acc;
+ Word16 scale;
+ Word32 L_temp;
+ Word16 temp;
+ Word16 mult;
+
+ /* initialize states */
+ for (i = 0; i < M; i++)
+ {
+ aState[i] = a[i];
+ }
+
+ /* backward Levinson recursion */
+ for (i = M - 1; i >= 0; i--)
+ {
+ if (abs_s(aState[i]) >= 4096)
+ {
+ for (i = 0; i < M; i++)
+ {
+ refl[i] = 0;
+ }
+ break;
+ }
+
+ refl[i] = shl(aState[i], 3, pOverflow);
+
+ L_temp = L_mult(refl[i], refl[i], pOverflow);
+ L_acc = L_sub(MAX_32, L_temp, pOverflow);
+
+ normShift = norm_l(L_acc);
+ scale = sub(15, normShift, pOverflow);
+
+ L_acc = L_shl(L_acc, normShift, pOverflow);
+ normProd = pv_round(L_acc, pOverflow);
+
+ mult = div_s(16384, normProd);
+
+ for (j = 0; j < i; j++)
+ {
+ L_acc = L_deposit_h(aState[j]);
+ L_acc = L_msu(L_acc, refl[i], aState[i-j-1], pOverflow);
+
+ temp = pv_round(L_acc, pOverflow);
+ L_temp = L_mult(mult, temp, pOverflow);
+ L_temp = L_shr_r(L_temp, scale, pOverflow);
+
+ if (L_abs(L_temp) > 32767)
+ {
+ for (i = 0; i < M; i++)
+ {
+ refl[i] = 0;
+ }
+ ALOGE("b/23609206");
+ return;
+ }
+
+ bState[j] = extract_l(L_temp);
+ }
+
+ for (j = 0; j < i; j++)
+ {
+ aState[j] = bState[j];
+ }
+ }
+ return;
+}
+
+
+
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/a_refl.h b/media/codecs/amrnb/dec/src/a_refl.h
new file mode 100644
index 0000000..4028e1e
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/a_refl.h
@@ -0,0 +1,124 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/a_refl.h
+
+ Date: 08/11/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : a_refl.h
+ Purpose : Convert from direct form coefficients to
+ reflection coefficients
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef A_REFL_H
+#define A_REFL_H
+#define a_refl_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ /*
+ * FUNCTION: A_Refl()
+ * PURPOSE: Convert from direct form coefficients to reflection coefficients
+ * DESCRIPTION:
+ * Directform coeffs in Q12 are converted to
+ * reflection coefficients Q15
+ */
+ void A_Refl(
+ Word16 a[], /* i : Directform coefficients */
+ Word16 refl[], /* o : Reflection coefficients */
+ Flag *pOverflow
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _A_REFL_H_ */
+
+
+
diff --git a/media/codecs/amrnb/dec/src/agc.cpp b/media/codecs/amrnb/dec/src/agc.cpp
new file mode 100644
index 0000000..4c66d54
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/agc.cpp
@@ -0,0 +1,1066 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/agc.c
+ Funtions: energy_old
+ energy_new
+ agc_init
+ agc_reset
+ agc_exit
+ agc
+ agc2
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This set of modules scale the excitation level and output of the speech
+ signals.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "agc.h"
+#include "cnst.h"
+#include "inv_sqrt.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: energy_old
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ in = input signal (Word16)
+ l_trm = input signal length (Word16)
+ pOverflow = address of overflow (Flag)
+
+ Outputs:
+ pOverflow -> 1 if the energy computation saturates
+
+ Returns:
+ s = return energy of signal (Word32)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Returns the energy of the signal.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+static Word32 energy_old( // o : return energy of signal
+ Word16 in[], // i : input signal (length l_trm)
+ Word16 l_trm // i : signal length
+)
+{
+ Word32 s;
+ Word16 i, temp;
+
+ temp = shr (in[0], 2);
+ s = L_mult (temp, temp);
+
+ for (i = 1; i < l_trm; i++)
+ {
+ temp = shr (in[i], 2);
+ s = L_mac (s, temp, temp);
+ }
+
+ return s;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+static Word32 energy_old( /* o : return energy of signal */
+ Word16 in[], /* i : input signal (length l_trm) */
+ Word16 l_trm, /* i : signal length */
+ Flag *pOverflow /* overflow: flag to indicate overflow */
+)
+
+{
+ Word32 s = 0;
+ Word16 i;
+ Word16 temp;
+
+ for (i = 0; i < l_trm; i++)
+ {
+ temp = in[i] >> 2;
+ s = L_mac(s, temp, temp, pOverflow);
+ }
+
+ return(s);
+}
+
+/*----------------------------------------------------------------------------*/
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: energy_old__Wrapper
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ in = input signal (Word16)
+ l_trm = input signal length (Word16)
+ pOverflow = address of overflow (Flag)
+ Outputs:
+ pOverflow -> 1 if the energy computation saturates
+
+ Returns:
+ s = return energy of signal (Word32)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function provides external access to the static function energy_old.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ None
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ CALL energy_old ( in = in
+ l_trm = l_trm
+ pOverflow = pOverflow )
+ MODIFYING(nothing)
+ RETURNING(energy_old_value = s)
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word32 energy_old_Wrapper(Word16 in[], Word16 l_trm, Flag *pOverflow)
+{
+ Word32 energy_old_value;
+
+ /*----------------------------------------------------------------------------
+ CALL energy_old ( in = in
+ l_trm = l_trm
+ pOverflow = pOverflow )
+
+ MODIFYING(nothing)
+ RETURNING(energy_old_value = s)
+ ----------------------------------------------------------------------------*/
+ energy_old_value = energy_old(in, l_trm, pOverflow);
+ return(energy_old_value);
+}
+/*--------------------------------------------------------------------------*/
+
+/*
+-----------------------------------------------------------------------------
+ FUNCTION NAME: energy_new
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ in = input signal
+ l_trm = input signal length
+ pOverflow = address of overflow (Flag)
+
+ Outputs:
+ pOverflow -> 1 if the energy computation saturates
+
+ Returns:
+ s = return energy of signal
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Returns the energy of the signal.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+static Word32 energy_new( // o : return energy of signal
+ Word16 in[], // i : input signal (length l_trm)
+ Word16 l_trm ) // i : signal length
+
+{
+ Word32 s;
+ Word16 i;
+ Flag ov_save;
+
+ ov_save = Overflow; //save overflow flag in case energy_old
+ // must be called
+ s = L_mult(in[0], in[0]);
+ for (i = 1; i < l_trm; i++)
+ {
+ s = L_mac(s, in[i], in[i]);
+ }
+
+ // check for overflow
+ if (L_sub (s, MAX_32) == 0L)
+ {
+ Overflow = ov_save; // restore overflow flag
+ s = energy_old (in, l_trm); // function result
+ }
+ else
+ {
+ s = L_shr(s, 4);
+ }
+
+ return(s);
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+static Word32 energy_new( /* o : return energy of signal */
+ Word16 in[], /* i : input signal (length l_trm) */
+ Word16 l_trm, /* i : signal length */
+ Flag *pOverflow /* i : overflow flag */
+)
+
+{
+ Word32 s = 0;
+ Word16 i;
+ Flag ov_save;
+
+ ov_save = *(pOverflow); /* save overflow flag in case energy_old */
+ /* must be called */
+
+
+ for (i = 0; i < l_trm; i++)
+ {
+ s = L_mac(s, in[i], in[i], pOverflow);
+ }
+
+ /* check for overflow */
+ if (s != MAX_32)
+ {
+ /* s is a sum of squares, so it won't be negative */
+ s = s >> 4;
+ }
+ else
+ {
+ *(pOverflow) = ov_save; /* restore overflow flag */
+ s = energy_old(in, l_trm, pOverflow); /* function result */
+ }
+
+ return (s);
+}
+
+/*--------------------------------------------------------------------------*/
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: energy_new__Wrapper
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ in = input signal (Word16)
+ l_trm = input signal length (Word16)
+ overflow = address of overflow (Flag)
+
+ Outputs:
+ pOverflow -> 1 if the energy computation saturates
+
+ Returns:
+ s = return energy of signal (Word32)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function provides external access to the static function energy_new.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ None
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ CALL energy_new ( in = in
+ l_trm = l_trm
+ pOverflow = pOverflow )
+
+ MODIFYING(nothing)
+
+ RETURNING(energy_new_value = s)
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word32 energy_new_Wrapper(Word16 in[], Word16 l_trm, Flag *pOverflow)
+{
+ Word32 energy_new_value;
+
+ /*----------------------------------------------------------------------------
+ CALL energy_new ( in = in
+ l_trm = l_trm
+ pOverflow = pOverflow )
+
+ MODIFYING(nothing)
+ RETURNING(energy_new_value = s)
+
+ ----------------------------------------------------------------------------*/
+ energy_new_value = energy_new(in, l_trm, pOverflow);
+
+ return(energy_new_value);
+
+}
+
+/*--------------------------------------------------------------------------*/
+
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: agc_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type agcState
+
+ Outputs:
+ Structure pointed to by state is initialized to zeros
+
+ Returns:
+ Returns 0 if memory was successfully initialized,
+ otherwise returns -1.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Reset of agc (i.e. set state memory to 1.0).
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int agc_reset (agcState *state)
+{
+ if (state == (agcState *) NULL)
+ {
+ fprintf(stderr, "agc_reset: invalid parameter\n");
+ return -1;
+ }
+
+ state->past_gain = 4096; // initial value of past_gain = 1.0
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 agc_reset(agcState *state)
+{
+ if (state == (agcState *) NULL)
+ {
+ /* fprintf(stderr, "agc_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ state->past_gain = 4096; /* initial value of past_gain = 1.0 */
+
+ return(0);
+}
+
+/*--------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: agc
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to agc state
+ sig_in = pointer to a buffer containing the postfilter input signal
+ sig_out = pointer to a buffer containing the postfilter output signal
+ agc_fac = AGC factor
+ l_trm = subframe size
+ pOverflow = pointer to the overflow flag
+
+ Outputs:
+ st->past_gain = gain
+ buffer pointed to by sig_out contains the new postfilter output signal
+ pOverflow -> 1 if the agc computation saturates
+
+ Returns:
+ return = 0
+
+ Global Variables Used:
+ none.
+
+ Local Variables Needed:
+ none.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Scales the postfilter output on a subframe basis using:
+
+ sig_out[n] = sig_out[n] * gain[n]
+ gain[n] = agc_fac * gain[n-1] + (1 - agc_fac) g_in/g_out
+
+ where: gain[n] = gain at the nth sample given by
+ g_in/g_out = square root of the ratio of energy at
+ the input and output of the postfilter.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int agc (
+ agcState *st, // i/o : agc state
+ Word16 *sig_in, // i : postfilter input signal (l_trm)
+ Word16 *sig_out, // i/o : postfilter output signal (l_trm)
+ Word16 agc_fac, // i : AGC factor
+ Word16 l_trm // i : subframe size
+)
+{
+ Word16 i, exp;
+ Word16 gain_in, gain_out, g0, gain;
+ Word32 s;
+
+ // calculate gain_out with exponent
+ s = energy_new(sig_out, l_trm); // function result
+
+ if (s == 0)
+ {
+ st->past_gain = 0;
+ return 0;
+ }
+ exp = sub (norm_l (s), 1);
+ gain_out = pv_round (L_shl (s, exp));
+
+ // calculate gain_in with exponent
+ s = energy_new(sig_in, l_trm); // function result
+
+ if (s == 0)
+ {
+ g0 = 0;
+ }
+ else
+ {
+ i = norm_l (s);
+ gain_in = pv_round (L_shl (s, i));
+ exp = sub (exp, i);
+
+ *---------------------------------------------------*
+ * g0 = (1-agc_fac) * sqrt(gain_in/gain_out); *
+ *---------------------------------------------------*
+
+ s = L_deposit_l (div_s (gain_out, gain_in));
+ s = L_shl (s, 7); // s = gain_out / gain_in
+ s = L_shr (s, exp); // add exponent
+
+ s = Inv_sqrt (s); // function result
+ i = pv_round (L_shl (s, 9));
+
+ // g0 = i * (1-agc_fac)
+ g0 = mult (i, sub (32767, agc_fac));
+ }
+
+ // compute gain[n] = agc_fac * gain[n-1]
+ + (1-agc_fac) * sqrt(gain_in/gain_out)
+ // sig_out[n] = gain[n] * sig_out[n]
+
+ gain = st->past_gain;
+
+ for (i = 0; i < l_trm; i++)
+ {
+ gain = mult (gain, agc_fac);
+ gain = add (gain, g0);
+ sig_out[i] = extract_h (L_shl (L_mult (sig_out[i], gain), 3));
+ }
+
+ st->past_gain = gain;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void agc(
+ agcState *st, /* i/o : agc state */
+ Word16 *sig_in, /* i : postfilter input signal (l_trm) */
+ Word16 *sig_out, /* i/o : postfilter output signal (l_trm) */
+ Word16 agc_fac, /* i : AGC factor */
+ Word16 l_trm, /* i : subframe size */
+ Flag *pOverflow /* i : overflow Flag */
+
+)
+
+{
+ Word16 i;
+ Word16 exp;
+ Word16 gain_in;
+ Word16 gain_out;
+ Word16 g0;
+ Word16 gain;
+ Word32 s;
+ Word32 L_temp;
+ Word16 temp;
+
+ Word16 *p_sig_out;
+
+ /* calculate gain_out with exponent */
+ s = energy_new(sig_out, l_trm, pOverflow); /* function result */
+
+ if (s == 0)
+ {
+ st->past_gain = 0;
+ return;
+ }
+ exp = norm_l(s) - 1;
+
+ L_temp = L_shl(s, exp, pOverflow);
+ gain_out = pv_round(L_temp, pOverflow);
+
+ /* calculate gain_in with exponent */
+ s = energy_new(sig_in, l_trm, pOverflow); /* function result */
+
+ if (s == 0)
+ {
+ g0 = 0;
+ }
+ else
+ {
+ i = norm_l(s);
+
+ /* L_temp = L_shl(s, i, pOverflow); */
+ L_temp = s << i;
+
+ gain_in = pv_round(L_temp, pOverflow);
+
+ exp -= i;
+
+ /*---------------------------------------------------*
+ * g0 = (1-agc_fac) * sqrt(gain_in/gain_out); *
+ *---------------------------------------------------*/
+
+ /* s = gain_out / gain_in */
+ temp = div_s(gain_out, gain_in);
+
+ /* s = L_deposit_l (temp); */
+ s = (Word32) temp;
+ s = s << 7;
+ s = L_shr(s, exp, pOverflow); /* add exponent */
+
+ s = Inv_sqrt(s, pOverflow); /* function result */
+ L_temp = s << 9;
+
+ i = (Word16)((L_temp + (Word32) 0x00008000L) >> 16);
+
+ /* g0 = i * (1-agc_fac) */
+ temp = 32767 - agc_fac;
+
+ g0 = (Word16)(((Word32) i * temp) >> 15);
+
+ }
+
+ /* compute gain[n] = agc_fac * gain[n-1]
+ + (1-agc_fac) * sqrt(gain_in/gain_out) */
+ /* sig_out[n] = gain[n] * sig_out[n] */
+
+ gain = st->past_gain;
+ p_sig_out = sig_out;
+
+ for (i = 0; i < l_trm; i++)
+ {
+ /* gain = mult (gain, agc_fac, pOverflow); */
+ gain = (Word16)(((Word32) gain * agc_fac) >> 15);
+
+ /* gain = add (gain, g0, pOverflow); */
+ gain += g0;
+
+ /* L_temp = L_mult (sig_out[i], gain, pOverflow); */
+ L_temp = ((Word32)(*(p_sig_out)) * gain) << 1;
+
+ *(p_sig_out++) = (Word16)(L_temp >> 13);
+ }
+
+ st->past_gain = gain;
+
+ return;
+}
+
+/*--------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: agc2
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ sig_in = pointer to a buffer containing the postfilter input signal
+ sig_out = pointer to a buffer containing the postfilter output signal
+ l_trm = subframe size
+ pOverflow = pointer to overflow flag
+
+ Outputs:
+ sig_out points to a buffer containing the new scaled output signal.
+ pOverflow -> 1 if the agc computation saturates
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Scales the excitation on a subframe basis.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void agc2 (
+ Word16 *sig_in, // i : postfilter input signal
+ Word16 *sig_out, // i/o : postfilter output signal
+ Word16 l_trm // i : subframe size
+)
+{
+ Word16 i, exp;
+ Word16 gain_in, gain_out, g0;
+ Word32 s;
+
+ // calculate gain_out with exponent
+ s = energy_new(sig_out, l_trm); // function result
+
+ if (s == 0)
+ {
+ return;
+ }
+ exp = sub (norm_l (s), 1);
+ gain_out = pv_round (L_shl (s, exp));
+
+ // calculate gain_in with exponent
+ s = energy_new(sig_in, l_trm); // function result
+
+ if (s == 0)
+ {
+ g0 = 0;
+ }
+ else
+ {
+ i = norm_l (s);
+ gain_in = pv_round (L_shl (s, i));
+ exp = sub (exp, i);
+
+ *---------------------------------------------------*
+ * g0 = sqrt(gain_in/gain_out); *
+ *---------------------------------------------------*
+
+ s = L_deposit_l (div_s (gain_out, gain_in));
+ s = L_shl (s, 7); // s = gain_out / gain_in
+ s = L_shr (s, exp); // add exponent
+
+ s = Inv_sqrt (s); // function result
+ g0 = pv_round (L_shl (s, 9));
+ }
+
+ // sig_out(n) = gain(n) sig_out(n)
+
+ for (i = 0; i < l_trm; i++)
+ {
+ sig_out[i] = extract_h (L_shl (L_mult (sig_out[i], g0), 3));
+ }
+
+ return;
+}
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void agc2(
+ Word16 *sig_in, /* i : postfilter input signal */
+ Word16 *sig_out, /* i/o : postfilter output signal */
+ Word16 l_trm, /* i : subframe size */
+ Flag *pOverflow /* i : overflow flag */
+)
+
+{
+ Word16 i;
+ Word16 exp;
+ Word16 gain_in;
+ Word16 gain_out;
+ Word16 g0;
+ Word32 s;
+ Word32 L_temp;
+ Word16 temp;
+
+ /* calculate gain_out with exponent */
+ s = energy_new(sig_out, l_trm, pOverflow); /* function result */
+
+ if (s == 0)
+ {
+ return;
+ }
+ exp = norm_l(s) - 1;
+ L_temp = L_shl(s, exp, pOverflow);
+ gain_out = pv_round(L_temp, pOverflow);
+
+ /* calculate gain_in with exponent */
+ s = energy_new(sig_in, l_trm, pOverflow); /* function result */
+
+ if (s == 0)
+ {
+ g0 = 0;
+ }
+ else
+ {
+ i = norm_l(s);
+ L_temp = L_shl(s, i, pOverflow);
+ gain_in = pv_round(L_temp, pOverflow);
+ exp -= i;
+
+ /*---------------------------------------------------*
+ * g0 = sqrt(gain_in/gain_out); *
+ *---------------------------------------------------*/
+
+ /* s = gain_out / gain_in */
+ temp = div_s(gain_out, gain_in);
+
+ /* s = L_deposit_l (temp); */
+ s = (Word32)temp;
+
+ if (s > (Word32) 0x00FFFFFFL)
+ {
+ s = MAX_32;
+ }
+ else if (s < (Word32) 0xFF000000L)
+ {
+ s = MIN_32;
+ }
+ else
+ {
+ s = s << 7;
+ }
+ s = L_shr(s, exp, pOverflow); /* add exponent */
+
+ s = Inv_sqrt(s, pOverflow); /* function result */
+
+ if (s > (Word32) 0x003FFFFFL)
+ {
+ L_temp = MAX_32;
+ }
+ else if (s < (Word32) 0xFFC00000L)
+ {
+ L_temp = MIN_32;
+ }
+ else
+ {
+ L_temp = s << 9;
+ }
+ g0 = pv_round(L_temp, pOverflow);
+ }
+
+ /* sig_out(n) = gain(n) sig_out(n) */
+
+ for (i = l_trm - 1; i >= 0; i--)
+ {
+ L_temp = L_mult(sig_out[i], g0, pOverflow);
+ if (L_temp > (Word32) 0x0FFFFFFFL)
+ {
+ sig_out[i] = MAX_16;
+ }
+ else if (L_temp < (Word32) 0xF0000000L)
+ {
+ sig_out[i] = MIN_16;
+ }
+ else
+ {
+ sig_out[i] = (Word16)(L_temp >> 13);
+ }
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/agc.h b/media/codecs/amrnb/dec/src/agc.h
new file mode 100644
index 0000000..b6e3249
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/agc.h
@@ -0,0 +1,163 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/agc.h
+
+ Date: 12/07/2001
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removed unneeded sections of the standard template.
+ Updated function prototype for agc() and agc2() to match new
+ interface
+
+ Description: Changed paramter name from "overflow" to "pOverflow" for
+ functions agc() and agc2()
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : agc.h
+ Purpose : Scales the postfilter output on a subframe basis
+ : by automatic control of the subframe gain.
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _AGC_H_
+#define _AGC_H_
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 past_gain;
+ } agcState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function : agc_reset
+ ; Purpose : Reset of agc (i.e. set state memory to 1.0)
+ ; Returns : 0 on success
+ ;
+ ----------------------------------------------------------------------------*/
+ Word16 agc_reset(agcState *st);
+
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function : agc
+ ; Purpose : Scales the postfilter output on a subframe basis
+ ; Description : sig_out[n] = sig_out[n] * gain[n];
+ ; where gain[n] is the gain at the nth sample given by
+ ; gain[n] = agc_fac * gain[n-1] + (1 - agc_fac) g_in/g_out
+ ; g_in/g_out is the square root of the ratio of energy at
+ ; the input and output of the postfilter.
+ ;
+ ----------------------------------------------------------------------------*/
+ void agc(
+ agcState *st, /* i/o : agc state */
+ Word16 *sig_in, /* i : postfilter input signal, (l_trm) */
+ Word16 *sig_out, /* i/o : postfilter output signal, (l_trm) */
+ Word16 agc_fac, /* i : AGC factor */
+ Word16 l_trm, /* i : subframe size */
+ Flag *pOverflow /* i : overflow flag */
+ );
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: agc2
+ ; Purpose: Scales the excitation on a subframe basis
+ ;
+ ----------------------------------------------------------------------------*/
+ void agc2(
+ Word16 *sig_in, /* i : postfilter input signal */
+ Word16 *sig_out, /* i/o : postfilter output signal */
+ Word16 l_trm, /* i : subframe size */
+ Flag *pOverflow /* i : overflow flag */
+ );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _AGC_H_ */
+
+
diff --git a/media/codecs/amrnb/dec/src/amrdecode.cpp b/media/codecs/amrnb/dec/src/amrdecode.cpp
new file mode 100644
index 0000000..873d7af
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/amrdecode.cpp
@@ -0,0 +1,544 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+ Pathname: ./audio/gsm-amr/c/src/amrdecode.c
+
+ Date: 05/23/2001
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: AMRDecode now doesn't call getbits() or put_header_in().
+ It also now obtains a new bit_offset value from a constant
+ rather than from the returned value of getbits().
+
+ Description: AMRDecode now returns byte_offset rather than bit_offset,
+ so the program can access the next frame that is byte
+ aligned rather than packed without padding.
+
+ Description: The structure types Speech_Decode_FrameState are now
+ passed into amrdecode( ) using void pointers, so that
+ higher level functions don't need to know anything about
+ this structure type.
+
+ Description: Changed input argument list. Added code to handle incoming DTX
+ frames, and added call to wmf_to_ets function prior to calling
+ GSMFrameDecode.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Changed all references to bit_offset to byte_offset.
+
+ Description: Added input_type to the function interface and modified code
+ to check type of conversion that needs to be made.
+
+ Description: Modified pseudo-code to include IF2 and ETS input formats.
+ Removed byte_offset from input list. Renamed speech_bits
+ to speech_bits_ptr.
+
+ Description: Added dec_input_format_tab.h in Include section. Modified
+ pseudo-code to use correct table names. Renamed input_type to
+ input_format and speech_bits to speech_bits_ptr.
+
+ Description: Removed *prev_mode_ptr in the input argument list.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Removed dec_input_format_tab.h from Include section.
+ 2. Changed type definition of raw_pcm_buffer in the I/O
+ definition section.
+
+ Description: Renamed WmfBytesPerFrame to WmfDecBytesPerFrame, and
+ If2BytesPerFrame to If2DecBytesPerFrame.
+
+ Description: Modified code so that the ETS testvectors could be fed directly
+ to this function.
+
+ Description: Changed '&' to '&&' in the setting of rx_type and mode for
+ AMR_SID < frame_type < NO_DATA case.
+
+ Description: Added code comments and made some code optimizations per Phase
+ 2/3 review comments.
+
+ Description: Added conditional compile around the call to GSMFrameDecode to
+ allow amrdecode.c to be used in the ETS reference console.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "amrdecode.h"
+#include "cnst.h"
+#include "typedef.h"
+#include "frame.h"
+#include "sp_dec.h"
+#include "wmf_to_ets.h"
+#include "if2_to_ets.h"
+#include "frame_type_3gpp.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: AMRDecode
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state_data = pointer to a structure (type void)
+
+ frame_type = 3GPP frame type (enum Frame_Type_3GPP)
+
+ speech_bits_ptr = pointer to the beginning of the raw encoded speech bits
+ for the current frame to be decoded (unsigned char)
+
+ raw_pcm_buffer = pointer to the output pcm outputs array (Word16)
+
+ input_format = input format used; valid values are AMR_WMF, AMR_IF2,
+ and AMR_ETS (Word16)
+
+ Outputs:
+ raw_pcm_buffer contains the newly decoded linear PCM speech samples
+ state_data->prev_mode contains the new mode
+
+ Returns:
+ byte_offset = address offset of the next frame to be processed or
+ error condition flag (-1) (int)
+
+ Global Variables Used:
+ WmfDecBytesPerFrame = table containing the number of core AMR data bytes
+ used by each codec mode for WMF input format (const
+ int)
+
+ If2DecBytesPerFrame = table containing the number of core AMR data bytes
+ used by each codec mode for IF2 input format (const
+ int)
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function is the top level entry function to the GSM AMR Decoder library.
+
+ First, it checks the input format type (input_format) to determine the type
+ of de-formattting that needs to be done. If input_format is AMR_WMF, the input
+ data is in WMF (aka, non-IF2) format and the function wmf_to_ets will be
+ called to convert to the ETS format (1 bit/word, where 1 word = 16 bits),
+ and byte_offset will be updated according to the contents of WmfDecBytesPerFrame
+ table.
+
+ If input_format is AMR_IF2, the input data is in IF2 format [1] and the
+ function if2_to_ets will be called to convert to the ETS format, and
+ byte_offset will be updated according to the contents of If2DecBytesPerFrame
+ table.
+
+ The codec mode and receive frame type is initialized based on the incoming
+ frame_type.
+
+ If input_format is AMR_ETS, the input data is in the ETS format. The receive
+ frame type is set to the value in the first location of the buffer pointed to
+ by speech_bits_ptr. Then, the encoded speech parameters in the buffer pointed
+ to by speech_bits is copied to dec_ets_input_bfr and the type will be changed
+ from unsigned char to Word16. Lastly, if the receive frame type is not
+ RX_NO_DATA, the mode is obtained from the buffer pointed to by
+ speech_bits_ptr, offset by MAX_SERIAL_SIZE+1, otherwise, the mode is set to
+ the previous mode (found the in state_data->prev_mode).
+
+ If input_format is an unsupported format, byte_offset will be set to -1, to
+ indicate an error condition has occurred, and the function will exit.
+
+ If there are no errors, GSMFrameDecode is called to decode a 20 ms frame. It
+ puts the decoded linear PCM samples in the buffer pointed to by
+ raw_pcm_buffer. Then, the prev_mode field of the structure pointed to by
+ state_data is updated to the current mode.
+
+ This function returns the new byte_offset value to indicate the address
+ offset of the next speech frame to be decoded.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ [1] "AMR Speech Codec Frame Structure", 3GPP TS 26.101 version 4.1.0
+ Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Note: AMRSID_RXTYPE_BIT_OFFSET = 35
+ AMRSID_RXMODE_BIT_OFFSET = 36
+ NUM_AMRSID_RXMODE_BITS = 3
+
+
+ // Set up Decoder state structure pointer
+ Speech_Decode_FrameState *decoder_state
+ = (Speech_Decode_FrameState *) state_data
+
+ // Determine type of de-formatting
+
+ // Decode WMF or IF2 frames
+ IF ((input_format == AMR_RX_WMF) | (input_format == AMR_RX_IF2))
+ THEN
+ IF (input_format == AMR_RX_WMF)
+ THEN
+ // Convert incoming packetized raw WMF data to ETS format
+ CALL wmf_to_ets(frame_type = frame_type
+ input_ptr = speech_bits_ptr
+ output_ptr = &dec_ets_input_bfr)
+ MODIFYING(nothing)
+ RETURNING(nothing)
+
+ // Address offset of the start of next frame
+ byte_offset = WmfDecBytesPerFrame[frame_type]
+
+ ELSEIF (input_format == AMR_RX_IF2)
+ THEN
+ // Convert incoming packetized raw IF2 data to ETS format
+ CALL if2_to_ets(frame_type = frame_type
+ input_ptr = speech_bits_ptr
+ output_ptr = &dec_ets_input_bfr)
+ MODIFYING(nothing)
+ RETURNING(nothing)
+
+ // Address offset of the start of next frame
+ byte_offset = If2DecBytesPerFrame[frame_type]
+
+ ENDIF
+
+ // Determine AMR codec mode and AMR RX frame type
+ IF (frame_type <= AMR_122)
+ THEN
+ mode = (enum Mode) frame_type;
+ rx_type = RX_SPEECH_GOOD;
+
+ ELSEIF (frame_type == AMR_SID)
+ THEN
+ // Clear mode store prior to reading mode info from input buffer
+ mode = 0
+
+ FOR i = 0 TO NUM_AMRSID_RXMODE_BITS-1
+
+ mode |= (dec_ets_input_bfr[AMRSID_RXMODE_BIT_OFFSET+i] << i)
+
+ ENDFOR
+
+ IF (dec_ets_input_bfr[AMRSID_RXTYPE_BIT_OFFSET] == 0)
+ THEN
+ rx_type = RX_SID_FIRST
+
+ ELSE
+ rx_type = RX_SID_UPDATE
+
+ ENDIF
+
+ ELSEIF ((frame_type > AMR_SID) && (frame_type < NO_DATA))
+ THEN
+ // Use previous mode
+ mode = decoder_state->prev_mode
+
+ // Unsupported SID frames
+ rx_type = RX_SPEECH_BAD;
+
+ ELSE
+ // Use previous mode
+ mode = decoder_state->prev_mode
+
+ // No data received
+ rx_type = RX_NO_DATA;
+
+ ENDIF
+
+ // Decode ETS frames
+ ELSEIF (input_format == AMR_RX_ETS)
+ THEN
+ // Change type of pointer to incoming raw ETS data
+ ets_word_ptr = (Word16 *) speech_bits_ptr
+
+ // Get RX frame type
+ rx_type = (enum RXFrameType) *ets_word_ptr
+ ets_word_ptr = ets_word_ptr + 1
+
+ // Copy incoming raw ETS data to dec_ets_input_bfr
+ FOR i = 0 TO MAX_SERIAL_SIZE-1
+
+ dec_ets_input_bfr[i] = *ets_word_ptr
+ ets_word_ptr = ets_word_ptr + 1
+
+ ENDFOR
+
+ // Get codec mode
+ IF (rx_type != RX_NO_DATA)
+ THEN
+ mode = (enum Mode) *ets_word_ptr
+
+ ELSE
+ //Use previous mode if no received data
+ mode = decoder_state->prev_mode
+
+ ENDIF
+
+ // Set up byte_offset
+ byte_offset = 2*(MAX_SERIAL_SIZE+2)
+
+ ELSE
+ // Invalid format, return error code
+ byte_offset = -1
+
+ ENDIF
+
+ // Proceed with decoding frame, if there are no errors
+ IF (byte_offset != -1)
+ THEN
+ // Decode a 20 ms frame
+ CALL GSMFrameDecode( st = decoder_state
+ mode = mode
+ serial = dec_ets_input_bfr,
+ frame_type = rx_type,
+ synth = (Word16 *)raw_pcm_buffer);
+ MODIFYING (nothing)
+ RETURNING (Nothing)
+
+ // Save mode for next frame
+ decoder_state->prev_mode = mode
+
+ ENDIF
+
+ RETURN (byte_offset)
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 AMRDecode(
+ void *state_data,
+ enum Frame_Type_3GPP frame_type,
+ UWord8 *speech_bits_ptr,
+ Word16 *raw_pcm_buffer,
+ bitstream_format input_format
+)
+{
+ Word16 *ets_word_ptr;
+ enum Mode mode = (enum Mode)MR475;
+ int modeStore;
+ int tempInt;
+ enum RXFrameType rx_type = RX_NO_DATA;
+ Word16 dec_ets_input_bfr[MAX_SERIAL_SIZE];
+ Word16 i;
+ Word16 byte_offset = -1;
+
+ /* Type cast state_data to Speech_Decode_FrameState rather than passing
+ * that structure type to this function so the structure make up can't
+ * be viewed from higher level functions than this.
+ */
+ Speech_Decode_FrameState *decoder_state
+ = (Speech_Decode_FrameState *) state_data;
+
+ /* Determine type of de-formatting */
+ /* WMF or IF2 frames */
+ if ((input_format == MIME_IETF) | (input_format == IF2))
+ {
+ if (input_format == MIME_IETF)
+ {
+ /* Convert incoming packetized raw WMF data to ETS format */
+ wmf_to_ets(frame_type, speech_bits_ptr, dec_ets_input_bfr);
+
+ /* Address offset of the start of next frame */
+ byte_offset = WmfDecBytesPerFrame[frame_type];
+ }
+ else /* else has to be input_format IF2 */
+ {
+ /* Convert incoming packetized raw IF2 data to ETS format */
+ if2_to_ets(frame_type, speech_bits_ptr, dec_ets_input_bfr);
+
+ /* Address offset of the start of next frame */
+ byte_offset = If2DecBytesPerFrame[frame_type];
+ }
+
+ /* At this point, input data is in ETS format */
+ /* Determine AMR codec mode and AMR RX frame type */
+ if (frame_type <= AMR_122)
+ {
+ mode = (enum Mode) frame_type;
+ rx_type = RX_SPEECH_GOOD;
+ }
+ else if (frame_type == AMR_SID)
+ {
+ /* Clear mode store prior to reading mode info from input buffer */
+ modeStore = 0;
+
+ for (i = 0; i < NUM_AMRSID_RXMODE_BITS; i++)
+ {
+ tempInt = dec_ets_input_bfr[AMRSID_RXMODE_BIT_OFFSET+i] << i;
+ modeStore |= tempInt;
+ }
+ mode = (enum Mode) modeStore;
+
+ /* Get RX frame type */
+ if (dec_ets_input_bfr[AMRSID_RXTYPE_BIT_OFFSET] == 0)
+ {
+ rx_type = RX_SID_FIRST;
+ }
+ else
+ {
+ rx_type = RX_SID_UPDATE;
+ }
+ }
+ else if (frame_type < AMR_NO_DATA)
+ {
+ /* Invalid frame_type, return error code */
+ byte_offset = -1; /* !!! */
+ }
+ else
+ {
+ mode = decoder_state->prev_mode;
+
+ /*
+ * RX_NO_DATA, generate exponential decay from latest valid frame for the first 6 frames
+ * after that, create silent frames
+ */
+ rx_type = RX_NO_DATA;
+
+ }
+
+ }
+
+ /* ETS frames */
+ else if (input_format == ETS)
+ {
+ /* Change type of pointer to incoming raw ETS data */
+ ets_word_ptr = (Word16 *) speech_bits_ptr;
+
+ /* Get RX frame type */
+ rx_type = (enum RXFrameType) * ets_word_ptr;
+ ets_word_ptr++;
+
+ /* Copy incoming raw ETS data to dec_ets_input_bfr */
+ for (i = 0; i < MAX_SERIAL_SIZE; i++)
+ {
+ dec_ets_input_bfr[i] = *ets_word_ptr;
+ ets_word_ptr++;
+ }
+
+ /* Get codec mode */
+ if (rx_type != RX_NO_DATA)
+ {
+ /* Get mode from input bitstream */
+ mode = (enum Mode) * ets_word_ptr;
+ }
+ else
+ {
+ /* Use previous mode if no received data */
+ mode = decoder_state->prev_mode;
+ }
+
+ /* Set up byte_offset */
+ byte_offset = 2 * (MAX_SERIAL_SIZE + 2);
+ }
+ else
+ {
+ /* Invalid input format, return error code */
+ byte_offset = -1;
+ }
+
+ /* Proceed with decoding frame, if there are no errors */
+ if (byte_offset != -1)
+ {
+ /* Decode a 20 ms frame */
+
+#ifndef CONSOLE_DECODER_REF
+ /* Use PV version of sp_dec.c */
+ GSMFrameDecode(decoder_state, mode, dec_ets_input_bfr, rx_type,
+ raw_pcm_buffer);
+
+#else
+ /* Use ETS version of sp_dec.c */
+ Speech_Decode_Frame(decoder_state, mode, dec_ets_input_bfr, rx_type,
+ raw_pcm_buffer);
+
+#endif
+
+ /* Save mode for next frame */
+ decoder_state->prev_mode = mode;
+ }
+
+ return (byte_offset);
+}
+
+
+
diff --git a/media/codecs/amrnb/dec/src/amrdecode.h b/media/codecs/amrnb/dec/src/amrdecode.h
new file mode 100644
index 0000000..f224fb6
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/amrdecode.h
@@ -0,0 +1,164 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./gsm-amr/c/include/amrdecode.h
+
+ Date: 05/23/2001
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Added BytesUsed table so that the code can allow for padding
+ at the end of each frame.
+
+ Description: Removed function prototypes for getbits, putbits,
+ put_frame_header_in, and get_frame_header_off. Removed
+ basicop_malloc.h and replaced it with typedef.h in the include
+ section. Fixed table entries for various SID modes. Removed
+ #defines because they are not used by AMRDecode function.
+ Removed tables not used by AMRDecode function.
+
+ Description: The data type Speech_Decode_FrameState is now being passed into
+ this function as a void pointer rather than a structure of type
+ Speech_Decode_FrameState.
+
+ Description: The variable decoder_state was renamed to state_data.
+
+ Description: Updated function prototype and header template.
+
+ Description: Added mode.h and frame_type_3gpp.h to include section, and
+ removed sp_dec.h.
+
+ Description: Removed definition of Changed BytesThisFrame[] table. Added
+ extern declaration for BytesThisFrame[] table.
+
+ Description: Added #define for WMF and IF2. Updated function prototype.
+
+ Description: Moved input format #defines and BytesThisFrame table to
+ dec_input_format_tab.h and dec_input_format_tab.c, respectively.
+ Updated function prototype.
+
+ Description: Updated function prototype of AMRDecode due to the removal of
+ *prev_mode_ptr. Added extern of If2BytesPerFrame
+
+ Description: Added #defines for WMF, IF2, and ETS input formats.
+
+ Description: Changed WmfBytesPerFrame to WmfDecBytesPerFrame, and
+ If2BytesPerFrame to If2DecBytesPerFrame.
+
+ Description: Renamed #defines for input format types to make it unique to the
+ decoder.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the norm_s function.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef ARMDECODE_H
+#define ARMDECODE_H
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "frame_type_3gpp.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+#define NUM_AMRSID_RXMODE_BITS 3
+#define AMRSID_RXMODE_BIT_OFFSET 36
+#define AMRSID_RXTYPE_BIT_OFFSET 35
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern const Word16 WmfDecBytesPerFrame[];
+ extern const Word16 If2DecBytesPerFrame[];
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ Word16 AMRDecode(
+ void *state_data,
+ enum Frame_Type_3GPP frame_type,
+ UWord8 *speech_bits_ptr,
+ Word16 *raw_pcm_buffer,
+ bitstream_format input_format
+ );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _AMRDECODE_H_ */
diff --git a/media/codecs/amrnb/dec/src/b_cn_cod.cpp b/media/codecs/amrnb/dec/src/b_cn_cod.cpp
new file mode 100644
index 0000000..e62e483
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/b_cn_cod.cpp
@@ -0,0 +1,516 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/b_cn_cod.c
+ Functions: pseudonoise
+ build_CN_code
+ build_CN_param
+
+ Date: 09/28/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated template. Cleaned up code. Passing in a pointer to
+ overflow flag for build_CN_code() and build_CN_param() functions.
+ Removed unnecessary header files.
+ Description: Make chnages per formal review. Fix error introduced during
+ optimization in pseudonoise().
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This module contains functions for comfort noise(CN) generation.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "b_cn_cod.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; [Define module specific macros here]
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; [Include all pre-processor statements here. Include conditional
+; compile variables also.]
+----------------------------------------------------------------------------*/
+#define NB_PULSE 10 /* number of random pulses in DTX operation */
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; [List function prototypes here]
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; [Variable declaration - defined here and used outside this module]
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: pseudonoise
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ pShift_reg = pointer to Old CN generator shift register state (Word32)
+ no_bits = Number of bits (Word16)
+
+ Outputs:
+ pShift_reg -> Updated CN generator shift register state
+
+ Returns:
+ noise_bits = Generated random integer value (Word16)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Generate a random integer value to use in comfort noise generation. The
+ algorithm uses polynomial x^31 + x^3 + 1. Length of the PN sequence
+ is 2^31 - 1
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ b_cn_cod.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+Word16 pseudonoise (
+ Word32 *shift_reg, // i/o : Old CN generator shift register state
+ Word16 no_bits // i : Number of bits
+)
+{
+ Word16 noise_bits, Sn, i;
+
+ noise_bits = 0;
+ for (i = 0; i < no_bits; i++)
+ {
+ // State n == 31
+ if ((*shift_reg & 0x00000001L) != 0)
+ {
+ Sn = 1;
+ }
+ else
+ {
+ Sn = 0;
+ }
+
+ // State n == 3
+ if ((*shift_reg & 0x10000000L) != 0)
+ {
+ Sn = Sn ^ 1;
+ }
+ else
+ {
+ Sn = Sn ^ 0;
+ }
+
+ noise_bits = shl (noise_bits, 1);
+ noise_bits = noise_bits | (extract_l (*shift_reg) & 1);
+
+ *shift_reg = L_shr (*shift_reg, 1);
+ if (Sn & 1)
+ {
+ *shift_reg = *shift_reg | 0x40000000L;
+ }
+ }
+ return noise_bits;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+Word16 pseudonoise(
+ Word32 *pShift_reg, /* i/o : Old CN generator shift register state */
+ Word16 no_bits /* i : Number of bits */
+)
+{
+ Word16 noise_bits;
+ Word16 Sn;
+ Word16 i;
+ Word16 temp;
+
+ noise_bits = 0;
+
+ for (i = 0; i < no_bits; i++)
+ {
+ /* State n == 31 */
+ if ((*pShift_reg & 0x00000001L) != 0)
+ {
+ Sn = 1;
+ }
+ else
+ {
+ Sn = 0;
+ }
+
+ /* State n == 3 */
+ if ((*pShift_reg & 0x10000000L) != 0)
+ {
+ Sn ^= 1;
+ }
+ else
+ {
+ Sn ^= 0;
+ }
+
+ noise_bits <<= 1;
+
+ temp = (Word16)((*pShift_reg) & 1);
+ noise_bits |= temp;
+
+ *pShift_reg >>= 1;
+ if (Sn & 1)
+ {
+ *pShift_reg |= 0x40000000L;
+ }
+ }
+ return noise_bits;
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: build_CN_code
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ pSeed = pointer to the Old CN generator shift register state (Word32)
+ cod[] = array to hold the generated CN fixed code vector (Word16)
+ pOverflow = pointer to overflow flag (Flag)
+
+ Outputs:
+ cod[] = generated CN fixed code vector (Word16)
+ pSeed = Updated CN generator shift register state (Word16)
+ pOverflow -> 1 if overflow occured
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+This function computes the comfort noise fixed codebook excitation. The gains
+of the pulses are always +/-1.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ b_cn_cod.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void build_CN_code (
+ Word32 *seed, // i/o : Old CN generator shift register state
+ Word16 cod[] // o : Generated CN fixed codebook vector
+)
+{
+ Word16 i, j, k;
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ cod[i] = 0;
+ }
+
+// The reference ETSI code uses a global flag for Overflow. However in the
+// actual implementation a pointer to the overflow flag is passed into the
+// function so that it can be passed into the basic math functions L_mult()
+// and add()
+
+ for (k = 0; k < NB_PULSE; k++)
+ {
+ i = pseudonoise (seed, 2); // generate pulse position
+ i = shr (extract_l (L_mult (i, 10)), 1);
+ i = add (i, k);
+
+ j = pseudonoise (seed, 1); // generate sign
+
+ if (j > 0)
+ {
+ cod[i] = 4096;
+ }
+ else
+ {
+ cod[i] = -4096;
+ }
+ }
+
+ return;
+}
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+void build_CN_code(
+ Word32 *pSeed, /* i/o : Old CN generator shift register state */
+ Word16 cod[], /* o : Generated CN fixed codebook vector */
+ Flag *pOverflow /* i/o : Overflow flag */
+)
+{
+ Word16 i, j, k;
+ Word16 temp;
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ cod[i] = 0;
+ }
+
+ for (k = 0; k < NB_PULSE; k++)
+ {
+ i = pseudonoise(pSeed, 2); /* generate pulse position */
+
+ temp = (Word16)(L_mult(i, 10, pOverflow));
+ i = temp >> 1;
+ i = add(i, k, pOverflow);
+
+ j = pseudonoise(pSeed, 1); /* generate sign */
+
+ if (j > 0)
+ {
+ cod[i] = 4096;
+ }
+ else
+ {
+ cod[i] = -4096;
+ }
+ }
+
+ return;
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: build_CN_param
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ pSeed = pointer to the Old CN generator shift register state (Word32)
+ n_param = Number of parameters to randomize (Word16)
+ param_size_table = table holding paameter sizes (Word16)
+ param[] = array to hold CN generated paramters (Word16)
+ pOverflow = pointer to overflow flag (Flag)
+
+ Outputs:
+ param[] = CN generated parameters (Word16)
+ pSeed = Updated CN generator shift register state (Word16)
+ pOverflow -> 1 if overflow occured
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+This function randomizes the speech parameters, so that they do not produce
+tonal artifacts if used by ECU.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ b_cn_cod.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+void build_CN_param (
+ Word16 *seed, // i/o : Old CN generator shift register state
+ const Word16 n_param, // i : number of params
+ const Word16 param_size_table[],// i : size of params
+ Word16 parm[] // o : CN Generated params
+ )
+{
+ Word16 i;
+ const Word16 *p;
+
+// The reference ETSI code uses a global flag for Overflow. However in the
+// actual implementation a pointer to the overflow flag is passed into the
+// function so that it can be passed into the basic math functions L_add()
+// and L_mult()
+
+ *seed = extract_l(L_add(L_shr(L_mult(*seed, 31821), 1), 13849L));
+
+ p = &window_200_40[*seed & 0x7F];
+ for(i=0; i< n_param;i++){
+ parm[i] = *p++ & ~(0xFFFF<<param_size_table[i]);
+ }
+}
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+void build_CN_param(
+ Word16 *pSeed, /* i/o : Old CN generator shift register state */
+ const Word16 n_param, /* i : number of params */
+ const Word16 param_size_table[],/* i : size of params */
+ Word16 parm[], /* o : CN Generated params */
+ Flag *pOverflow /* i/o : Overflow Flag */
+)
+
+{
+ Word16 i;
+ const Word16 *pTemp;
+ Word32 L_temp;
+ Word16 temp;
+
+ L_temp = L_mult(*pSeed, 31821, pOverflow);
+ L_temp >>= 1;
+
+ *pSeed = (Word16)(L_add(L_temp, 13849L, pOverflow));
+
+ pTemp = &window_200_40[*pSeed & 0x7F];
+
+ for (i = 0; i < n_param; i++)
+ {
+ temp = ~(0xFFFF << param_size_table[i]);
+ parm[i] = *pTemp++ & temp;
+ }
+}
+
diff --git a/media/codecs/amrnb/dec/src/b_cn_cod.h b/media/codecs/amrnb/dec/src/b_cn_cod.h
new file mode 100644
index 0000000..743237c
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/b_cn_cod.h
@@ -0,0 +1,171 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/add.h
+
+
+
+
+ Date: 08/11/2000
+
+
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+
+ Description: Created separate header file for add function.
+
+ Description: Changed function prototype; pointer to overflow flag is passed
+ in as a parameter.
+
+ Description: Updated copyright section.
+ Changed "overflow" to "pOverflow" in the function prototype.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the comfort noise(CN) generator functions
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef B_CN_COD_H
+#define B_CN_COD_H
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "basicop_malloc.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern Word16 window_200_40[];
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+
+ ; FUNCTION NAME: pseudonoise
+ ;
+ ; PURPOSE: Generate a random integer value to use in comfort noise
+ ; generation. The algorithm uses polynomial x^31 + x^3 + 1
+ ; (length of PN sequence is 2^31 - 1).
+ ;
+ ----------------------------------------------------------------------------*/
+
+ Word16 pseudonoise(
+ Word32 *pShift_reg, /* i/o : Old CN generator shift register state */
+ Word16 no_bits /* i : Number of bits */
+ );
+
+ /*----------------------------------------------------------------------------
+
+ ; FUNCTION NAME: build_CN_code
+ ;
+ ; PURPOSE: Compute the comfort noise fixed codebook excitation. The
+ ; gains of the pulses are always +/-1.
+ ;
+ ----------------------------------------------------------------------------*/
+
+ void build_CN_code(
+ Word32 *pSeed, /* i/o : Old CN generator shift register state */
+ Word16 cod[], /* o : Generated CN fixed codebook vector */
+ Flag *pOverflow /* i/o : Overflow flag */
+ );
+
+ /*----------------------------------------------------------------------------
+
+ ; FUNCTION NAME: build_CN_param
+ ;
+ ; PURPOSE: Randomize the speech parameters. So that they
+ ; do not produce tonal artifacts if used by ECU.
+ ;
+ ----------------------------------------------------------------------------*/
+
+ void build_CN_param(
+ Word16 *pSeed, /* i/o : Old CN generator shift register state */
+ const Word16 n_param, /* i : number of params */
+ const Word16 param_size_table[], /* i : size of params */
+ Word16 parm[], /* o : CN Generated params */
+ Flag *pOverflow /* i/o : Overflow Flag */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _B_CN_COD_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/bgnscd.cpp b/media/codecs/amrnb/dec/src/bgnscd.cpp
new file mode 100644
index 0000000..e732007
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/bgnscd.cpp
@@ -0,0 +1,589 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+ Pathname: ./audio/gsm-amr/c/src/bgnscd.c
+ Functions:
+ Bgn_scd_reset
+ Bgn_scd
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ Background noise source characteristic detector (SCD)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <string.h>
+
+#include "bgnscd.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+#include "copy.h"
+#include "gmed_n.h"
+#include "sqrt_l.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define TRUE 1
+#define FALSE 0
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Bgn_scd_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = points to memory of type Bgn_scdState.
+
+ Outputs:
+ The memory of type Bgn_scdState pointed to by state is set to all
+ zeros.
+
+ Returns:
+ Returns 0 if memory was successfully initialized,
+ otherwise returns -1.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Resets state memory.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ bgnscd.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+Word16 Bgn_scd_reset (Bgn_scdState *state)
+{
+ if (state == (Bgn_scdState *) NULL){
+ fprintf(stderr, "Bgn_scd_reset: invalid parameter\n");
+ return -1;
+ }
+
+ // Static vectors to zero
+ Set_zero (state->frameEnergyHist, L_ENERGYHIST);
+
+ // Initialize hangover handling
+ state->bgHangover = 0;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Bgn_scd_reset(Bgn_scdState *state)
+{
+ if (state == (Bgn_scdState *) NULL)
+ {
+ /* fprintf(stderr, "Bgn_scd_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ /* Static vectors to zero */
+ memset(state->frameEnergyHist, 0, L_ENERGYHIST*sizeof(Word16));
+
+ /* Initialize hangover handling */
+ state->bgHangover = 0;
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Bgn_scd
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to state variables of type Bgn_scdState
+ ltpGainHist[] = LTP gain history (Word16)
+ speech[] = synthesis speech frame (Word16)
+ voicedHangover = pointer to # of frames after last voiced frame (Word16)
+ pOverflow = pointer to overflow indicator (Flag)
+
+ Outputs:
+ st = function updates the state variables of type Bgn_scdState
+ pointed to by st.
+ voicedHangover = function updates the # of frames after last voiced
+ frame pointed to by voicedHangover.
+ pOverflow = 1 if the basic math function L_add() results in saturation.
+ else pOverflow is zero.
+
+ Returns:
+ inbgNoise = flag if background noise is present (Word16)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Characterize synthesis speech and detect background noise.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ bgnscd.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+Word16 Bgn_scd (Bgn_scdState *st, // i : State variables for bgn SCD
+ Word16 ltpGainHist[], // i : LTP gain history
+ Word16 speech[], // o : synthesis speech frame
+ Word16 *voicedHangover // o : # of frames after last
+ voiced frame
+ )
+{
+ Word16 i;
+ Word16 prevVoiced, inbgNoise;
+ Word16 temp;
+ Word16 ltpLimit, frameEnergyMin;
+ Word16 currEnergy, noiseFloor, maxEnergy, maxEnergyLastPart;
+ Word32 s;
+
+ // Update the inBackgroundNoise flag (valid for use in next frame if BFI)
+ // it now works as a energy detector floating on top
+ // not as good as a VAD.
+
+ currEnergy = 0;
+ s = (Word32) 0;
+
+ for (i = 0; i < L_FRAME; i++)
+ {
+ s = L_mac (s, speech[i], speech[i]);
+ }
+
+ s = L_shl(s, 2);
+
+ currEnergy = extract_h (s);
+
+ frameEnergyMin = 32767;
+
+ for (i = 0; i < L_ENERGYHIST; i++)
+ {
+ if (sub(st->frameEnergyHist[i], frameEnergyMin) < 0)
+ frameEnergyMin = st->frameEnergyHist[i];
+ }
+
+ noiseFloor = shl (frameEnergyMin, 4); // Frame Energy Margin of 16
+
+ maxEnergy = st->frameEnergyHist[0];
+ for (i = 1; i < L_ENERGYHIST-4; i++)
+ {
+ if ( sub (maxEnergy, st->frameEnergyHist[i]) < 0)
+ {
+ maxEnergy = st->frameEnergyHist[i];
+ }
+ }
+
+ maxEnergyLastPart = st->frameEnergyHist[2*L_ENERGYHIST/3];
+ for (i = 2*L_ENERGYHIST/3+1; i < L_ENERGYHIST; i++)
+ {
+ if ( sub (maxEnergyLastPart, st->frameEnergyHist[i] ) < 0)
+ {
+ maxEnergyLastPart = st->frameEnergyHist[i];
+ }
+ }
+
+ inbgNoise = 0; // false
+
+ // Do not consider silence as noise
+ // Do not consider continuous high volume as noise
+ // Or if the current noise level is very low
+ // Mark as noise if under current noise limit
+ // OR if the maximum energy is below the upper limit
+
+ if ( (sub(maxEnergy, LOWERNOISELIMIT) > 0) &&
+ (sub(currEnergy, FRAMEENERGYLIMIT) < 0) &&
+ (sub(currEnergy, LOWERNOISELIMIT) > 0) &&
+ ( (sub(currEnergy, noiseFloor) < 0) ||
+ (sub(maxEnergyLastPart, UPPERNOISELIMIT) < 0)))
+ {
+ if (sub(add(st->bgHangover, 1), 30) > 0)
+ {
+ st->bgHangover = 30;
+ } else
+ {
+ st->bgHangover = add(st->bgHangover, 1);
+ }
+ }
+ else
+ {
+ st->bgHangover = 0;
+ }
+
+ // make final decision about frame state , act somewhat cautiosly
+ if (sub(st->bgHangover,1) > 0)
+ inbgNoise = 1; // true
+
+ for (i = 0; i < L_ENERGYHIST-1; i++)
+ {
+ st->frameEnergyHist[i] = st->frameEnergyHist[i+1];
+ }
+ st->frameEnergyHist[L_ENERGYHIST-1] = currEnergy;
+
+ // prepare for voicing decision; tighten the threshold after some
+ time in noise
+ ltpLimit = 13926; // 0.85 Q14
+ if (sub(st->bgHangover, 8) > 0)
+ {
+ ltpLimit = 15565; // 0.95 Q14
+ }
+ if (sub(st->bgHangover, 15) > 0)
+ {
+ ltpLimit = 16383; // 1.00 Q14
+ }
+
+ // weak sort of voicing indication.
+ prevVoiced = 0; // false
+
+ if (sub(gmed_n(<pGainHist[4], 5), ltpLimit) > 0)
+ {
+ prevVoiced = 1; // true
+ }
+ if (sub(st->bgHangover, 20) > 0) {
+ if (sub(gmed_n(ltpGainHist, 9), ltpLimit) > 0)
+ {
+ prevVoiced = 1; // true
+ }
+ else
+ {
+ prevVoiced = 0; // false
+ }
+ }
+
+ if (prevVoiced)
+ {
+ *voicedHangover = 0;
+ }
+ else
+ {
+ temp = add(*voicedHangover, 1);
+ if (sub(temp, 10) > 0)
+ {
+ *voicedHangover = 10;
+ }
+ else
+ {
+ *voicedHangover = temp;
+ }
+ }
+
+ return inbgNoise;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Bgn_scd(Bgn_scdState *st, /* i : State variables for bgn SCD */
+ Word16 ltpGainHist[], /* i : LTP gain history */
+ Word16 speech[], /* o : synthesis speech frame */
+ Word16 *voicedHangover,/* o : # of frames after last
+ voiced frame */
+ Flag *pOverflow
+ )
+{
+ Word16 i;
+ Word16 prevVoiced, inbgNoise;
+ Word16 temp;
+ Word16 ltpLimit, frameEnergyMin;
+ Word16 currEnergy, noiseFloor, maxEnergy, maxEnergyLastPart;
+ Word32 s, L_temp;
+
+
+ /* Update the inBackgroundNoise flag (valid for use in next frame if BFI) */
+ /* it now works as a energy detector floating on top */
+ /* not as good as a VAD. */
+
+ s = (Word32) 0;
+
+ for (i = L_FRAME - 1; i >= 0; i--)
+ {
+ L_temp = ((Word32) speech[i]) * speech[i];
+ if (L_temp != (Word32) 0x40000000L)
+ {
+ L_temp = L_temp << 1;
+ }
+ else
+ {
+ L_temp = MAX_32;
+ }
+ s = L_add(s, L_temp, pOverflow);
+ }
+
+ /* s is a sum of squares, so don't need to check for neg overflow */
+ if (s > (Word32)0x1fffffffL)
+ {
+ currEnergy = MAX_16;
+ }
+ else
+ {
+ currEnergy = (Word16)(s >> 14);
+ }
+
+ frameEnergyMin = 32767;
+ for (i = L_ENERGYHIST - 1; i >= 0; i--)
+ {
+ if (st->frameEnergyHist[i] < frameEnergyMin)
+ {
+ frameEnergyMin = st->frameEnergyHist[i];
+ }
+ }
+
+ /* Frame Energy Margin of 16 */
+ L_temp = (Word32)frameEnergyMin << 4;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ if (L_temp > 0)
+ {
+ noiseFloor = MAX_16;
+ }
+ else
+ {
+ noiseFloor = MIN_16;
+ }
+ }
+ else
+ {
+ noiseFloor = (Word16)(L_temp);
+ }
+
+ maxEnergy = st->frameEnergyHist[0];
+ for (i = L_ENERGYHIST - 5; i >= 1; i--)
+ {
+ if (maxEnergy < st->frameEnergyHist[i])
+ {
+ maxEnergy = st->frameEnergyHist[i];
+ }
+ }
+
+ maxEnergyLastPart = st->frameEnergyHist[2*L_ENERGYHIST/3];
+ for (i = 2 * L_ENERGYHIST / 3 + 1; i < L_ENERGYHIST; i++)
+ {
+ if (maxEnergyLastPart < st->frameEnergyHist[i])
+ {
+ maxEnergyLastPart = st->frameEnergyHist[i];
+ }
+ }
+
+ /* Do not consider silence as noise */
+ /* Do not consider continuous high volume as noise */
+ /* Or if the current noise level is very low */
+ /* Mark as noise if under current noise limit */
+ /* OR if the maximum energy is below the upper limit */
+
+ if ((maxEnergy > LOWERNOISELIMIT) &&
+ (currEnergy < FRAMEENERGYLIMIT) &&
+ (currEnergy > LOWERNOISELIMIT) &&
+ ((currEnergy < noiseFloor) ||
+ (maxEnergyLastPart < UPPERNOISELIMIT)))
+ {
+ if ((st->bgHangover + 1) > 30)
+ {
+ st->bgHangover = 30;
+ }
+ else
+ {
+ st->bgHangover += 1;
+ }
+ }
+ else
+ {
+ st->bgHangover = 0;
+ }
+
+ /* make final decision about frame state , act somewhat cautiosly */
+
+ if (st->bgHangover > 1)
+ {
+ inbgNoise = TRUE;
+ }
+ else
+ {
+ inbgNoise = FALSE;
+ }
+
+ for (i = 0; i < L_ENERGYHIST - 1; i++)
+ {
+ st->frameEnergyHist[i] = st->frameEnergyHist[i+1];
+ }
+ st->frameEnergyHist[L_ENERGYHIST-1] = currEnergy;
+
+ /* prepare for voicing decision; tighten the threshold after some
+ time in noise */
+
+ if (st->bgHangover > 15)
+ {
+ ltpLimit = 16383; /* 1.00 Q14 */
+ }
+ else if (st->bgHangover > 8)
+ {
+ ltpLimit = 15565; /* 0.95 Q14 */
+ }
+ else
+ {
+ ltpLimit = 13926; /* 0.85 Q14 */
+ }
+
+ /* weak sort of voicing indication. */
+ prevVoiced = FALSE;
+
+ if (gmed_n(<pGainHist[4], 5) > ltpLimit)
+ {
+ prevVoiced = TRUE;
+ }
+
+ if (st->bgHangover > 20)
+ {
+ if (gmed_n(ltpGainHist, 9) > ltpLimit)
+ {
+ prevVoiced = TRUE;
+ }
+ else
+ {
+ prevVoiced = FALSE;
+ }
+ }
+
+
+ if (prevVoiced)
+ {
+ *voicedHangover = 0;
+ }
+ else
+ {
+ temp = *voicedHangover + 1;
+
+ if (temp > 10)
+ {
+ *voicedHangover = 10;
+ }
+ else
+ {
+ *voicedHangover = temp;
+ }
+ }
+
+ return(inbgNoise);
+}
diff --git a/media/codecs/amrnb/dec/src/bgnscd.h b/media/codecs/amrnb/dec/src/bgnscd.h
new file mode 100644
index 0000000..41349d9
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/bgnscd.h
@@ -0,0 +1,159 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/bgnscd.h
+
+ Date: 12/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : bgnscd.h
+ Purpose : Background noise source charateristic detector (SCD)
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _BGNSCD_H_
+#define _BGNSCD_H_
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "cnst.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+#define L_ENERGYHIST 60
+#define INV_L_FRAME 102
+
+
+ /* 2*(160*x)^2 / 65536 where x is FLP values 150,5 and 50 */
+#define FRAMEENERGYLIMIT 17578 /* 150 */
+#define LOWERNOISELIMIT 20 /* 5 */
+#define UPPERNOISELIMIT 1953 /* 50 */
+
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ /* history vector of past synthesis speech energy */
+ Word16 frameEnergyHist[L_ENERGYHIST];
+
+ /* state flags */
+ Word16 bgHangover; /* counter; number of frames after last speech frame */
+
+ } Bgn_scdState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+ /*
+ * Function : Bgn_scd_init
+ * Purpose : Allocates initializes state memory
+ * Description : Stores pointer to filter status struct in *st. This
+ * pointer has to be passed to Bgn_scd in each call.
+ * Returns : 0 on success
+ */
+ Word16 Bgn_scd_init(Bgn_scdState **st);
+
+ /*
+ * Function : Bgn_scd_reset
+ * Purpose : Resets state memory
+ * Returns : 0 on success
+ */
+ Word16 Bgn_scd_reset(Bgn_scdState *st);
+
+ /*
+ * Function : Bgn_scd_exit
+ * Purpose : The memory used for state memory is freed
+ * Description : Stores NULL in *s
+ * Returns : void
+ */
+ void Bgn_scd_exit(Bgn_scdState **st);
+
+ /*
+ * Function : Bgn_scd
+ * Purpose : Charaterice synthesis speech and detect background noise
+ * Returns : background noise decision; 0 = bgn, 1 = no bgn
+ */
+ Word16 Bgn_scd(Bgn_scdState *st, /* i : State variables for bgn SCD */
+ Word16 ltpGainHist[], /* i : LTP gain history */
+ Word16 speech[], /* o : synthesis speech frame */
+ Word16 *voicedHangover,/* o : # of frames after last voiced frame */
+ Flag *pOverflow
+ );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BGNSCD_H_ */
diff --git a/media/codecs/amrnb/dec/src/c_g_aver.cpp b/media/codecs/amrnb/dec/src/c_g_aver.cpp
new file mode 100644
index 0000000..91d3982
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/c_g_aver.cpp
@@ -0,0 +1,648 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/c_g_aver.c
+ Functions:
+ Cb_gain_average_reset
+ Cb_gain_average
+
+ Date: 03/28/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Made some changes to the comments to match the comments from
+ other modules.
+
+ Description: Made changes based on comments from the review meeting.
+
+ Description: Synchronized file with UMTS version 3.2.0. Updated coding
+ template.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Defined one local variable per line.
+
+ Description: Removed the functions Cb_gain_average_init and
+ Cb_gain_average_exit. The Cb_gain_average related structure is no longer
+ dynamically allocated.
+
+ Description: Passing in pOverflow to comply with changes needed for EPOC
+ Updated the include files for the module.
+
+ Description: Changed round function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description:
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains functions that reset and perform
+ codebook gain calculations.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <string.h>
+
+#include "c_g_aver.h"
+#include "typedef.h"
+#include "mode.h"
+#include "cnst.h"
+
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Cb_gain_average_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type Cb_gain_averageState
+
+ Outputs:
+ Structure pointed to by state is initialized to zeros
+
+ Returns:
+ Returns 0 if memory was successfully initialized,
+ otherwise returns -1.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Resets state memory
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ c_g_aver.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+Word16 Cb_gain_average_reset (Cb_gain_averageState *state)
+{
+ if (state == (Cb_gain_averageState *) NULL){
+ fprintf(stderr, "Cb_gain_average_reset: invalid parameter\n");
+ return -1;
+ }
+
+ // Static vectors to zero
+ Set_zero (state->cbGainHistory, L_CBGAINHIST);
+
+ // Initialize hangover handling
+ state->hangVar = 0;
+ state->hangCount= 0;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Cb_gain_average_reset(Cb_gain_averageState *state)
+{
+ if (state == (Cb_gain_averageState *) NULL)
+ {
+ /* fprint(stderr, "Cb_gain_average_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ /* Static vectors to zero */
+ memset(state->cbGainHistory, 0, L_CBGAINHIST*sizeof(Word16));
+
+ /* Initialize hangover handling */
+ state->hangVar = 0;
+ state->hangCount = 0;
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Cb_gain_average
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to structure of type Cb_gain_averageState
+ mode = AMR mode (enum Mode)
+ gain_code = CB gain (Word16)
+ lsp = the LSP for the current frame (Word16)
+ lspAver = the average of LSP for 8 frames (Word16)
+ bfi = bad frame indication flag (Word16)
+ prev_bf = previous bad frame indication flag (Word16)
+ pdfi = potential degraded bad frame ind flag (Word16)
+ prev_pdf = prev pot. degraded bad frame ind flag (Word16)
+ inBackgroundNoise = background noise decision (Word16)
+ voicedHangover = # of frames after last voiced frame (Word16)
+ pOverflow = address of overflow (Flag)
+
+ Returns:
+ cbGainMix = codebook gain (Word16)
+
+ Outputs:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ The mix cb gains for MR475, MR515, MR59, MR67, MR102; gain_code other modes
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ c_g_aver.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+Word16 Cb_gain_average (
+ Cb_gain_averageState *st, // i/o : State variables for CB gain avergeing
+ enum Mode mode, // i : AMR mode
+ Word16 gain_code, // i : CB gain Q1
+ Word16 lsp[], // i : The LSP for the current frame Q15
+ Word16 lspAver[], // i : The average of LSP for 8 frames Q15
+ Word16 bfi, // i : bad frame indication flag
+ Word16 prev_bf, // i : previous bad frame indication flag
+ Word16 pdfi, // i : potential degraded bad frame ind flag
+ Word16 prev_pdf, // i : prev pot. degraded bad frame ind flag
+ Word16 inBackgroundNoise, // i : background noise decision
+ Word16 voicedHangover // i : # of frames after last voiced frame
+ )
+{
+ //---------------------------------------------------------*
+ * Compute mixed cb gain, used to make cb gain more *
+ * smooth in background noise for modes 5.15, 5.9 and 6.7 *
+ * states that needs to be updated by all *
+ *---------------------------------------------------------
+ Word16 i;
+ Word16 cbGainMix, diff, tmp_diff, bgMix, cbGainMean;
+ Word32 L_sum;
+ Word16 tmp[M], tmp1, tmp2, shift1, shift2, shift;
+
+ // set correct cbGainMix for MR74, MR795, MR122
+ cbGainMix = gain_code;
+
+ *-------------------------------------------------------*
+ * Store list of CB gain needed in the CB gain *
+ * averaging *
+ *-------------------------------------------------------*
+ for (i = 0; i < (L_CBGAINHIST-1); i++)
+ {
+ st->cbGainHistory[i] = st->cbGainHistory[i+1];
+ }
+ st->cbGainHistory[L_CBGAINHIST-1] = gain_code;
+
+ // compute lsp difference
+ for (i = 0; i < M; i++) {
+ tmp1 = abs_s(sub(lspAver[i], lsp[i])); // Q15
+ shift1 = sub(norm_s(tmp1), 1); // Qn
+ tmp1 = shl(tmp1, shift1); // Q15+Qn
+ shift2 = norm_s(lspAver[i]); // Qm
+ tmp2 = shl(lspAver[i], shift2); // Q15+Qm
+ tmp[i] = div_s(tmp1, tmp2); // Q15+(Q15+Qn)-(Q15+Qm)
+ shift = sub(add(2, shift1), shift2);
+ if (shift >= 0)
+ {
+ tmp[i] = shr(tmp[i], shift); // Q15+Qn-Qm-Qx=Q13
+ }
+ else
+ {
+ tmp[i] = shl(tmp[i], negate(shift)); // Q15+Qn-Qm-Qx=Q13
+ }
+ }
+
+ diff = tmp[0];
+ for (i = 1; i < M; i++) {
+ diff = add(diff, tmp[i]); // Q13
+ }
+
+ // Compute hangover
+ if (sub(diff, 5325) > 0) // 0.65 in Q11
+ {
+ st->hangVar = add(st->hangVar, 1);
+ }
+ else
+ {
+ st->hangVar = 0;
+ }
+
+ if (sub(st->hangVar, 10) > 0)
+ {
+ st->hangCount = 0; // Speech period, reset hangover variable
+ }
+
+ // Compute mix constant (bgMix)
+ bgMix = 8192; // 1 in Q13
+ if ((sub(mode, MR67) <= 0) || (sub(mode, MR102) == 0))
+ // MR475, MR515, MR59, MR67, MR102
+ {
+ // if errors and presumed noise make smoothing probability stronger
+ if (((((pdfi != 0) && (prev_pdf != 0)) || (bfi != 0) || (prev_bf != 0)) &&
+ (sub(voicedHangover, 1) > 0) && (inBackgroundNoise != 0) &&
+ ((sub(mode, MR475) == 0) ||
+ (sub(mode, MR515) == 0) ||
+ (sub(mode, MR59) == 0)) ))
+ {
+ // bgMix = min(0.25, max(0.0, diff-0.55)) / 0.25;
+ tmp_diff = sub(diff, 4506); // 0.55 in Q13
+
+ // max(0.0, diff-0.55)
+ if (tmp_diff > 0)
+ {
+ tmp1 = tmp_diff;
+ }
+ else
+ {
+ tmp1 = 0;
+ }
+
+ // min(0.25, tmp1)
+ if (sub(2048, tmp1) < 0)
+ {
+ bgMix = 8192;
+ }
+ else
+ {
+ bgMix = shl(tmp1, 2);
+ }
+ }
+ else
+ {
+ // bgMix = min(0.25, max(0.0, diff-0.40)) / 0.25;
+ tmp_diff = sub(diff, 3277); // 0.4 in Q13
+
+ // max(0.0, diff-0.40)
+ if (tmp_diff > 0)
+ {
+ tmp1 = tmp_diff;
+ }
+ else
+ {
+ tmp1 = 0;
+ }
+
+ // min(0.25, tmp1)
+ if (sub(2048, tmp1) < 0)
+ {
+ bgMix = 8192;
+ }
+ else
+ {
+ bgMix = shl(tmp1, 2);
+ }
+ }
+
+ if ((sub(st->hangCount, 40) < 0) || (sub(diff, 5325) > 0)) // 0.65 in Q13
+ {
+ bgMix = 8192; // disable mix if too short time since
+ }
+
+ // Smoothen the cb gain trajectory
+ // smoothing depends on mix constant bgMix
+ L_sum = L_mult(6554, st->cbGainHistory[2]); // 0.2 in Q15; L_sum in Q17
+ for (i = 3; i < L_CBGAINHIST; i++)
+ {
+ L_sum = L_mac(L_sum, 6554, st->cbGainHistory[i]);
+ }
+ cbGainMean = pv_round(L_sum); // Q1
+
+ // more smoothing in error and bg noise (NB no DFI used here)
+ if (((bfi != 0) || (prev_bf != 0)) && (inBackgroundNoise != 0) &&
+ ((sub(mode, MR475) == 0) ||
+ (sub(mode, MR515) == 0) ||
+ (sub(mode, MR59) == 0)) )
+ {
+ L_sum = L_mult(4681, st->cbGainHistory[0]); // 0.143 in Q15; L_sum in Q17
+ for (i = 1; i < L_CBGAINHIST; i++)
+ {
+ L_sum = L_mac(L_sum, 4681, st->cbGainHistory[i]);
+ }
+ cbGainMean = pv_round(L_sum); // Q1
+ }
+
+ // cbGainMix = bgMix*cbGainMix + (1-bgMix)*cbGainMean;
+ L_sum = L_mult(bgMix, cbGainMix); // L_sum in Q15
+ L_sum = L_mac(L_sum, 8192, cbGainMean);
+ L_sum = L_msu(L_sum, bgMix, cbGainMean);
+ cbGainMix = pv_round(L_shl(L_sum, 2)); // Q1
+ }
+
+ st->hangCount = add(st->hangCount, 1);
+ return cbGainMix;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Cb_gain_average(
+ Cb_gain_averageState *st, /* i/o : State variables for CB gain averaging */
+ enum Mode mode, /* i : AMR mode */
+ Word16 gain_code, /* i : CB gain Q1 */
+ Word16 lsp[], /* i : The LSP for the current frame Q15 */
+ Word16 lspAver[], /* i : The average of LSP for 8 frames Q15 */
+ Word16 bfi, /* i : bad frame indication flag */
+ Word16 prev_bf, /* i : previous bad frame indication flag */
+ Word16 pdfi, /* i : potential degraded bad frame ind flag */
+ Word16 prev_pdf, /* i : prev pot. degraded bad frame ind flag */
+ Word16 inBackgroundNoise, /* i : background noise decision */
+ Word16 voicedHangover, /* i : # of frames after last voiced frame */
+ Flag *pOverflow
+)
+{
+ Word16 i;
+ Word16 cbGainMix;
+ Word16 diff;
+ Word16 tmp_diff;
+ Word16 bgMix;
+ Word16 cbGainMean;
+ Word32 L_sum;
+ Word16 tmp[M];
+ Word16 tmp1;
+ Word16 tmp2;
+ Word16 shift1;
+ Word16 shift2;
+ Word16 shift;
+
+ /*---------------------------------------------------------*
+ * Compute mixed cb gain, used to make cb gain more *
+ * smooth in background noise for modes 5.15, 5.9 and 6.7 *
+ * states that needs to be updated by all *
+ *---------------------------------------------------------*/
+
+ /* set correct cbGainMix for MR74, MR795, MR122 */
+ cbGainMix = gain_code;
+
+ /*-------------------------------------------------------*
+ * Store list of CB gain needed in the CB gain *
+ * averaging *
+ *-------------------------------------------------------*/
+ for (i = 0; i < (L_CBGAINHIST - 1); i++)
+ {
+ st->cbGainHistory[i] = st->cbGainHistory[i+1];
+ }
+ st->cbGainHistory[L_CBGAINHIST-1] = gain_code;
+
+ diff = 0;
+
+ /* compute lsp difference */
+ for (i = 0; i < M; i++)
+ {
+ tmp1 = abs_s(sub(*(lspAver + i), *(lsp + i), pOverflow));
+ /* Q15 */
+ shift1 = sub(norm_s(tmp1), 1, pOverflow); /* Qn */
+ tmp1 = shl(tmp1, shift1, pOverflow); /* Q15+Qn */
+ shift2 = norm_s(*(lspAver + i)); /* Qm */
+ tmp2 = shl(*(lspAver + i), shift2, pOverflow); /* Q15+Qm */
+ tmp[i] = div_s(tmp1, tmp2); /* Q15+(Q15+Qn)-(Q15+Qm) */
+
+ shift = 2 + shift1 - shift2;
+
+ if (shift >= 0)
+ {
+ *(tmp + i) = shr(*(tmp + i), shift, pOverflow);
+ /* Q15+Qn-Qm-Qx=Q13 */
+ }
+ else
+ {
+ *(tmp + i) = shl(*(tmp + i), negate(shift), pOverflow);
+ /* Q15+Qn-Qm-Qx=Q13 */
+ }
+
+ diff = add(diff, *(tmp + i), pOverflow); /* Q13 */
+ }
+
+ /* Compute hangover */
+
+ if (diff > 5325) /* 0.65 in Q11 */
+ {
+ st->hangVar += 1;
+ }
+ else
+ {
+ st->hangVar = 0;
+ }
+
+
+ if (st->hangVar > 10)
+ {
+ /* Speech period, reset hangover variable */
+ st->hangCount = 0;
+ }
+
+ /* Compute mix constant (bgMix) */
+ bgMix = 8192; /* 1 in Q13 */
+
+ if ((mode <= MR67) || (mode == MR102))
+ /* MR475, MR515, MR59, MR67, MR102 */
+ {
+ /* if errors and presumed noise make smoothing probability stronger */
+
+ if (((((pdfi != 0) && (prev_pdf != 0)) || (bfi != 0) ||
+ (prev_bf != 0))
+ && (voicedHangover > 1)
+ && (inBackgroundNoise != 0)
+ && ((mode == MR475) || (mode == MR515) ||
+ (mode == MR59))))
+ {
+ /* bgMix = min(0.25, max(0.0, diff-0.55)) / 0.25; */
+ tmp_diff = sub(diff, 4506, pOverflow); /* 0.55 in Q13 */
+ }
+ else
+ {
+ /* bgMix = min(0.25, max(0.0, diff-0.40)) / 0.25; */
+ tmp_diff = sub(diff, 3277, pOverflow); /* 0.4 in Q13 */
+ }
+
+ /* max(0.0, diff-0.55) or */
+ /* max(0.0, diff-0.40) */
+ if (tmp_diff > 0)
+ {
+ tmp1 = tmp_diff;
+ }
+ else
+ {
+ tmp1 = 0;
+ }
+
+ /* min(0.25, tmp1) */
+ if (2048 < tmp1)
+ {
+ bgMix = 8192;
+ }
+ else
+ {
+ bgMix = shl(tmp1, 2, pOverflow);
+ }
+
+ if ((st->hangCount < 40) || (diff > 5325)) /* 0.65 in Q13 */
+ {
+ /* disable mix if too short time since */
+ bgMix = 8192;
+ }
+
+ /* Smoothen the cb gain trajectory */
+ /* smoothing depends on mix constant bgMix */
+ L_sum = L_mult(6554, st->cbGainHistory[2], pOverflow);
+ /* 0.2 in Q15; L_sum in Q17 */
+
+ for (i = 3; i < L_CBGAINHIST; i++)
+ {
+ L_sum = L_mac(L_sum, 6554, st->cbGainHistory[i], pOverflow);
+ }
+ cbGainMean = pv_round(L_sum, pOverflow); /* Q1 */
+
+ /* more smoothing in error and bg noise (NB no DFI used here) */
+
+ if (((bfi != 0) || (prev_bf != 0)) && (inBackgroundNoise != 0)
+ && ((mode == MR475) || (mode == MR515)
+ || (mode == MR59)))
+ {
+ /* 0.143 in Q15; L_sum in Q17 */
+ L_sum = L_mult(4681, st->cbGainHistory[0], pOverflow);
+ for (i = 1; i < L_CBGAINHIST; i++)
+ {
+ L_sum =
+ L_mac(L_sum, 4681, st->cbGainHistory[i], pOverflow);
+ }
+ cbGainMean = pv_round(L_sum, pOverflow); /* Q1 */
+ }
+
+ /* cbGainMix = bgMix*cbGainMix + (1-bgMix)*cbGainMean; */
+ /* L_sum in Q15 */
+ L_sum = L_mult(bgMix, cbGainMix, pOverflow);
+ L_sum = L_mac(L_sum, 8192, cbGainMean, pOverflow);
+ L_sum = L_msu(L_sum, bgMix, cbGainMean, pOverflow);
+ cbGainMix = pv_round(L_shl(L_sum, 2, pOverflow), pOverflow); /* Q1 */
+ }
+
+ st->hangCount += 1;
+
+ return (cbGainMix);
+}
+
diff --git a/media/codecs/amrnb/dec/src/c_g_aver.h b/media/codecs/amrnb/dec/src/c_g_aver.h
new file mode 100644
index 0000000..0b53753
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/c_g_aver.h
@@ -0,0 +1,163 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/c_g_aver.h
+
+ Date: 12/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : c_g_aver.h
+ Purpose : Background noise source charateristic detector (SCD)
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _C_G_AVER_H_
+#define _C_G_AVER_H_
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "mode.h"
+#include "cnst.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+#define L_CBGAINHIST 7
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ /* history vector of past synthesis speech energy */
+ Word16 cbGainHistory[L_CBGAINHIST];
+
+ /* state flags */
+ Word16 hangVar; /* counter; */
+ Word16 hangCount; /* counter; */
+
+ } Cb_gain_averageState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+ /*
+ * Function : Cb_gain_average_init
+ * Purpose : Allocates initializes state memory
+ * Description : Stores pointer to filter status struct in *st. This
+ * pointer has to be passed to Cb_gain_average in each call.
+ * Returns : 0 on success
+ */
+ Word16 Cb_gain_average_init(Cb_gain_averageState **st);
+
+ /*
+ * Function : Cb_gain_average_reset
+ * Purpose : Resets state memory
+ * Returns : 0 on success
+ */
+ Word16 Cb_gain_average_reset(Cb_gain_averageState *st);
+
+ /*
+ * Function : Cb_gain_average_exit
+ * Purpose : The memory used for state memory is freed
+ * Description : Stores NULL in *s
+ * Returns : void
+ */
+ void Cb_gain_average_exit(Cb_gain_averageState **st);
+
+ /*
+ * Function : Cb_gain_average
+ * Purpose : Charaterice synthesis speech and detect background noise
+ * Returns : background noise decision; 0 = bgn, 1 = no bgn
+ */
+ Word16 Cb_gain_average(
+ Cb_gain_averageState *st, /* i/o : State variables for CB gain avergeing */
+ enum Mode mode, /* i : AMR mode */
+ Word16 gain_code, /* i : CB gain Q1 */
+ Word16 lsp[], /* i : The LSP for the current frame Q15 */
+ Word16 lspAver[], /* i : The average of LSP for 8 frames Q15 */
+ Word16 bfi, /* i : bad frame indication flag */
+ Word16 prev_bf, /* i : previous bad frame indication flag */
+ Word16 pdfi, /* i : potential degraded bad frame ind flag */
+ Word16 prev_pdf, /* i : prev pot. degraded bad frame ind flag */
+ Word16 inBackgroundNoise, /* i : background noise decision */
+ Word16 voicedHangover, /* i : # of frames after last voiced frame */
+ Flag *pOverflow
+ );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _C_G_AVER_H_ */
+
+
diff --git a/media/codecs/amrnb/dec/src/d1035pf.cpp b/media/codecs/amrnb/dec/src/d1035pf.cpp
new file mode 100644
index 0000000..861b3e6
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d1035pf.cpp
@@ -0,0 +1,263 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d1035pf.c
+
+ Date: 04/14/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated template used to PV coding template. First attempt at
+ optimizing C code.
+
+ Description: Updated file per comments gathered from Phase 2/3 review.
+
+ Description: Synchronized file with UTMS version 3.2.0. Updated coding
+ template. Removed unnecessary include files.
+
+ Description: Removed inclusion of "gray.tab".
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d1035pf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define NB_PULSE 10 /* number of pulses */
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dec_10i40_35bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ index = buffer containing index of 10 pulses; each element is
+ represented by sign+position
+ cod = buffer of algebraic (fixed) codebook excitation
+
+ Outputs:
+ cod buffer contains the new algebraic codebook excitation
+
+ Returns:
+ None
+
+ Global Variables Used:
+ dgray = gray decoding table
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function builds the innovative codevector from the received index of
+ algebraic codebook. See c1035pf.c for more details about the algebraic
+ codebook structure.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d1035pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void dec_10i40_35bits (
+ Word16 index[], // (i) : index of 10 pulses (sign+position)
+ Word16 cod[] // (o) : algebraic (fixed) codebook excitation
+)
+{
+ Word16 i, j, pos1, pos2, sign, tmp;
+
+ for (i = 0; i < L_CODE; i++)
+ {
+ cod[i] = 0;
+ }
+
+ // decode the positions and signs of pulses and build the codeword
+
+ for (j = 0; j < NB_TRACK; j++)
+ {
+ // compute index i
+
+ tmp = index[j];
+ i = tmp & 7;
+ i = dgray[i];
+
+ i = extract_l (L_shr (L_mult (i, 5), 1));
+ pos1 = add (i, j); // position of pulse "j"
+
+ i = shr (tmp, 3) & 1;
+ if (i == 0)
+ {
+ sign = 4096; // +1.0
+ }
+ else
+ {
+ sign = -4096; // -1.0
+ }
+
+ cod[pos1] = sign;
+
+ // compute index i
+
+ i = index[add (j, 5)] & 7;
+ i = dgray[i];
+ i = extract_l (L_shr (L_mult (i, 5), 1));
+
+ pos2 = add (i, j); // position of pulse "j+5"
+
+ if (sub (pos2, pos1) < 0)
+ {
+ sign = negate (sign);
+ }
+ cod[pos2] = add (cod[pos2], sign);
+ }
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void dec_10i40_35bits(
+ Word16 index[], /* (i) : index of 10 pulses (sign+position) */
+ Word16 cod[] /* (o) : algebraic (fixed) codebook excitation */
+)
+{
+ Word16 i, j, pos1, pos2;
+ Word16 sign, tmp;
+
+ for (i = 0; i < L_CODE; i++)
+ {
+ *(cod + i) = 0;
+ }
+
+ /* decode the positions and signs of pulses and build the codeword */
+
+ for (j = 0; j < NB_TRACK; j++)
+ {
+ /* compute index i */
+
+ tmp = *(index + j);
+ i = tmp & 7;
+ i = *(dgray + i);
+
+ i = (Word16)(i * 5);
+ pos1 = i + j; /* position of pulse "j" */
+
+ i = (tmp >> 3) & 1;
+
+ if (i == 0)
+ {
+ sign = 4096; /* +1.0 */
+ }
+ else
+ {
+ sign = -4096; /* -1.0 */
+ }
+
+ *(cod + pos1) = sign;
+
+ /* compute index i */
+
+ i = *(index + j + 5) & 7;
+ i = *(dgray + i);
+ i = (Word16)(i * 5);
+
+ pos2 = i + j; /* position of pulse "j+5" */
+
+
+ if (pos2 < pos1)
+ {
+ sign = negate(sign);
+ }
+ *(cod + pos2) += sign;
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d1035pf.h b/media/codecs/amrnb/dec/src/d1035pf.h
new file mode 100644
index 0000000..51f1f42
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d1035pf.h
@@ -0,0 +1,117 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/d1035pf.h
+
+ Date: 09/28/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated template. Added extern declaration for dgray[] defined
+ in gray_tbl.c
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains the prototype declaration for dec_10i40_35bits function.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef D1035PF_H
+#define D1035PF_H
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern Word16 dgray[];
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void dec_10i40_35bits(
+ Word16 index[], /* (i) : index of 10 pulses (sign+position) */
+ Word16 cod[] /* (o) : algebraic (fixed) codebook excitation */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _D1035PF_H_ */
diff --git a/media/codecs/amrnb/dec/src/d2_11pf.cpp b/media/codecs/amrnb/dec/src/d2_11pf.cpp
new file mode 100644
index 0000000..e1e544f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d2_11pf.cpp
@@ -0,0 +1,224 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d2_11pf.c
+ Functions:
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified to place file in the correct template format. Eliminated
+ use of special functions to perform simple mathematical operations.
+
+ Description: Per review comments...
+ (1) Removed include of "count.h" and "basic_op.h"
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d2_11pf.h"
+#include "typedef.h"
+#include "cnst.h"
+
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define NB_PULSE 2
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decode_2i40_11bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ sign -- Word16 -- signs of 2 pulses.
+ index -- Word16 -- Positions of the 2 pulses.
+
+ Outputs:
+ cod[] -- array of type Word16 -- algebraic (fixed) codebook excitation
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d2_11pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void decode_2i40_11bits(
+ Word16 sign, /* i : signs of 2 pulses. */
+ Word16 index, /* i : Positions of the 2 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+)
+
+{
+ Word16 i;
+ Word16 j;
+
+ Word16 pos[NB_PULSE];
+
+ /* Decode the positions */
+
+ j = index & 0x1;
+
+ index >>= 1;
+
+ i = index & 0x7;
+
+ pos[0] = i * 5 + j * 2 + 1;
+
+
+
+
+ index >>= 3;
+
+ j = index & 0x3;
+
+ index >>= 2;
+
+ i = index & 0x7;
+
+ if (j == 3)
+ {
+ pos[1] = i * 5 + 4;
+ }
+ else
+ {
+ pos[1] = i * 5 + j;
+ }
+
+
+
+
+ /* decode the signs and build the codeword */
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ cod[i] = 0;
+ }
+
+ for (j = 0; j < NB_PULSE; j++)
+ {
+ i = sign & 1;
+
+ /* This line is equivalent to...
+ *
+ *
+ * if (i == 1)
+ * {
+ * cod[pos[j]] = 8191;
+ * }
+ * if (i == 0)
+ * {
+ * cod[pos[j]] = -8192;
+ * }
+ */
+
+ cod[pos[j]] = i * 16383 - 8192;
+
+ sign >>= 1;
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d2_11pf.h b/media/codecs/amrnb/dec/src/d2_11pf.h
new file mode 100644
index 0000000..aaf2e08
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d2_11pf.h
@@ -0,0 +1,93 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+********************************************************************************
+*
+* GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001
+* R99 Version 3.2.0
+* REL-4 Version 4.0.0
+*
+********************************************************************************
+*
+* File : d2_11pf.h
+* Purpose : Algebraic codebook decoder
+*
+********************************************************************************
+*/
+#ifndef d2_11pf_h
+#define d2_11pf_h "$Id $"
+
+/*
+********************************************************************************
+* INCLUDE FILES
+********************************************************************************
+*/
+#include "typedef.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*
+ ********************************************************************************
+ * LOCAL VARIABLES AND TABLES
+ ********************************************************************************
+ */
+
+ /*
+ ********************************************************************************
+ * DEFINITION OF DATA TYPES
+ ********************************************************************************
+ */
+
+ /*
+ ********************************************************************************
+ * DECLARATION OF PROTOTYPES
+ ********************************************************************************
+ */
+ /*************************************************************************
+ *
+ * FUNCTION: decode_2i40_11bits (decod_ACELP())
+ *
+ * PURPOSE: Algebraic codebook decoder for 2 pulses coded with 11 bits
+ *
+ *************************************************************************/
+
+ void decode_2i40_11bits(
+ Word16 sign, /* i : signs of 2 pulses. */
+ Word16 index, /* i : Positions of the 2 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+ );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/media/codecs/amrnb/dec/src/d2_9pf.cpp b/media/codecs/amrnb/dec/src/d2_9pf.cpp
new file mode 100644
index 0000000..2c36706
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d2_9pf.cpp
@@ -0,0 +1,248 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d2_9pf.c
+ Functions: decode_2i40_9bits
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified to place file in the correct template format. Eliminated
+ use of special functions to perform simple mathematical operations, where
+ possible. Added the parameter pOverflow for the basic math operations.
+
+ Description: Per review comments...
+ (1) Removed include of basic_op.h, replaced with shl.h
+ (2) Added pOverflow to the output section of the template
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+
+ FUNCTION: decode_2i40_9bits (decod_ACELP())
+
+ PURPOSE: Algebraic codebook decoder. For details about the encoding see
+ c2_9pf.c
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d2_9pf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+#define NB_PULSE 2
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL VARIABLE DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+ extern const Word16 startPos[];
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decode_2i40_11bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ sign -- Word16 -- signs of 2 pulses.
+ index -- Word16 -- Positions of the 2 pulses.
+
+ Outputs:
+ cod[] -- array of type Word16 -- algebraic (fixed) codebook excitation
+ pOverflow = pointer to overflow flag
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d2_9pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void decode_2i40_9bits(
+ Word16 subNr, /* i : subframe number */
+ Word16 sign, /* i : signs of 2 pulses. */
+ Word16 index, /* i : Positions of the 2 pulses. */
+ Word16 cod[], /* o : algebraic (fixed) codebook excitation */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 j;
+ Word16 k;
+
+ Word16 pos[NB_PULSE];
+
+ /* Decode the positions */
+ /* table bit is the MSB */
+
+ j = (Word16)(index & 64);
+
+ j >>= 3;
+
+ i = index & 7;
+
+ k =
+ shl(
+ subNr,
+ 1,
+ pOverflow);
+
+ k += j;
+
+ /* pos0 =i*5+startPos[j*8+subNr*2] */
+ pos[0] = i * 5 + startPos[k++];
+
+
+ index >>= 3;
+
+ i = index & 7;
+
+ /* pos1 =i*5+startPos[j*8+subNr*2 + 1] */
+ pos[1] = i * 5 + startPos[k];
+
+
+ /* decode the signs and build the codeword */
+
+ for (i = L_SUBFR - 1; i >= 0; i--)
+ {
+ cod[i] = 0;
+ }
+
+ for (j = 0; j < NB_PULSE; j++)
+ {
+ i = sign & 0x1;
+
+ /* This line is equivalent to...
+ *
+ *
+ * if (i == 1)
+ * {
+ * cod[pos[j]] = 8191;
+ * }
+ * if (i == 0)
+ * {
+ * cod[pos[j]] = -8192;
+ * }
+ */
+
+ cod[pos[j]] = i * 16383 - 8192;
+
+ sign >>= 1;
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d2_9pf.h b/media/codecs/amrnb/dec/src/d2_9pf.h
new file mode 100644
index 0000000..38076d8
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d2_9pf.h
@@ -0,0 +1,122 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/d2_9pf.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the d2_9pf.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef d2_9pf_h
+#define d2_9pf_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void decode_2i40_9bits(
+ Word16 subNr, /* i : subframe number */
+ Word16 sign, /* i : signs of 2 pulses. */
+ Word16 index, /* i : Positions of the 2 pulses. */
+ Word16 cod[], /* o : algebraic (fixed) codebook excitation */
+ Flag * pOverflow /* o : Flag set when overflow occurs */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _d2_9PF_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/d3_14pf.cpp b/media/codecs/amrnb/dec/src/d3_14pf.cpp
new file mode 100644
index 0000000..d1912cf
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d3_14pf.cpp
@@ -0,0 +1,233 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d3_14pf.c
+ Functions: decode_3i40_14bits
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified to place file in the correct template format. Eliminated
+ use of special functions to perform simple mathematical operations.
+
+ Description: Per review comments...
+ (1) Removed include of "count.h" and "basic_op.h"
+ (2) Updated the pathname to indicate the correct file. (Line 39)
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+
+ FUNCTION: decode_3i40_14bits (decod_ACELP())
+
+ PURPOSE: Algebraic codebook decoder. For details about the encoding see
+ c3_14pf.c
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "cnst.h"
+#include "d3_14pf.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define NB_PULSE 3 /* number of pulses */
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decode_3i40_14bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ sign -- Word16 -- signs of 3 pulses.
+ index -- Word16 -- Positions of the 3 pulses.
+
+ Outputs:
+ cod[] -- array of type Word16 -- algebraic (fixed) codebook excitation
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d2_9pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void decode_3i40_14bits(
+ Word16 sign, /* i : signs of 3 pulses. */
+ Word16 index, /* i : Positions of the 3 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+)
+{
+ Word16 i;
+ Word16 j;
+
+ Word16 pos[NB_PULSE];
+
+ /* Decode the positions */
+
+ i = index & 0x7;
+
+ pos[0] = i * 5;
+
+
+
+
+
+ index >>= 3;
+
+ j = index & 0x1;
+
+ index >>= 1;
+
+ i = index & 0x7;
+
+ pos[1] = i * 5 + j * 2 + 1;
+
+
+
+
+
+ index >>= 3;
+
+ j = index & 0x1;
+
+ index >>= 1;
+
+ i = index & 0x7;
+
+ pos[2] = i * 5 + j * 2 + 2;
+
+
+ /* decode the signs and build the codeword */
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ cod[i] = 0;
+ }
+
+ for (j = 0; j < NB_PULSE; j++)
+ {
+ i = sign & 1;
+
+ /* This line is equivalent to...
+ *
+ *
+ * if (i == 1)
+ * {
+ * cod[pos[j]] = 8191;
+ * }
+ * if (i == 0)
+ * {
+ * cod[pos[j]] = -8192;
+ * }
+ */
+
+ cod[pos[j]] = i * 16383 - 8192;
+
+ sign >>= 1;
+
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d3_14pf.h b/media/codecs/amrnb/dec/src/d3_14pf.h
new file mode 100644
index 0000000..1e2e0cd
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d3_14pf.h
@@ -0,0 +1,118 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/d2_9pf.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the d3_14pf.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef d3_14pf_h
+#define d3_14pf_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ void decode_3i40_14bits(
+ Word16 sign, /* i : signs of 3 pulses. */
+ Word16 index, /* i : Positions of the 3 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _d3_14PF_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/d4_17pf.cpp b/media/codecs/amrnb/dec/src/d4_17pf.cpp
new file mode 100644
index 0000000..ece82c0
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d4_17pf.cpp
@@ -0,0 +1,271 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d4_17pf.c
+ Functions: decode_4i40_17bits
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified to place file in the correct template format. Eliminated
+ use of special functions to perform simple mathematical operations.
+
+ Description: An incorrect comment in the original source lead me to implement
+ the calculation of pos[2] incorrectly. The correct formula is pos2 =i*5+2,
+ not pos2 = i*5 + 1.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+
+ FUNCTION: decode_4i40_17bits (decod_ACELP())
+
+ PURPOSE: Algebraic codebook decoder. For details about the encoding see
+ c4_17pf.c
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+#include "d4_17pf.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+#define NB_PULSE 4 /* number of pulses */
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL VARIABLE DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern const Word16 dgray[];
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decode_4i40_17bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ sign -- Word16 -- signs of 3 pulses.
+ index -- Word16 -- Positions of the 3 pulses.
+
+ Outputs:
+ cod[] -- array of type Word16 -- algebraic (fixed) codebook excitation
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d4_17pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void decode_4i40_17bits(
+ Word16 sign, /* i : signs of 4 pulses. */
+ Word16 index, /* i : Positions of the 4 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+)
+{
+ Word16 i;
+ Word16 j;
+
+ Word16 pos[NB_PULSE];
+
+ /* Index is a 13-bit value. 3 bits each correspond to the
+ * positions 0-2, with 4 bits allocated for position 3.
+ *
+ *
+ * [][][][] [][][] [][][] [][][]
+ * | | | |
+ * | | | |
+ * pos3 pos2 pos1 pos0
+ */
+
+ /* Decode the positions */
+
+ i = index & 0x7;
+
+ i = dgray[i];
+
+ pos[0] = i * 5; /* pos0 =i*5 */
+
+
+ index >>= 3;
+
+ i = index & 0x7;
+
+ i = dgray[i];
+
+ pos[1] = i * 5 + 1; /* pos1 =i*5+1 */
+
+
+
+ index >>= 3;
+
+ i = index & 0x7;
+
+ i = dgray[i];
+
+ pos[2] = i * 5 + 2; /* pos2 =i*5+2 */
+
+
+
+
+
+ index >>= 3;
+
+ j = index & 0x1;
+
+ index >>= 1;
+
+ i = index & 0x7;
+
+ i = dgray[i];
+
+ pos[3] = i * 5 + 3 + j; /* pos3 =i*5+3+j */
+
+
+ /* decode the signs and build the codeword */
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ cod[i] = 0;
+ }
+
+ for (j = 0; j < NB_PULSE; j++)
+ {
+ i = sign & 0x1;
+
+ /* This line is equivalent to...
+ *
+ *
+ * if (i == 1)
+ * {
+ * cod[pos[j]] = 8191;
+ * }
+ * if (i == 0)
+ * {
+ * cod[pos[j]] = -8192;
+ * }
+ */
+
+ cod[pos[j]] = i * 16383 - 8192;
+
+ sign >>= 1;
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d4_17pf.h b/media/codecs/amrnb/dec/src/d4_17pf.h
new file mode 100644
index 0000000..5dc43f3
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d4_17pf.h
@@ -0,0 +1,119 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/d4_17pf.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the d4_17pf.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef d4_17pf_h
+#define d4_17pf_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void decode_4i40_17bits(
+ Word16 sign, /* i : signs of 4 pulses. */
+ Word16 index, /* i : Positions of the 4 pulses. */
+ Word16 cod[] /* o : algebraic (fixed) codebook excitation */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _d4_17PF_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/d8_31pf.cpp b/media/codecs/amrnb/dec/src/d8_31pf.cpp
new file mode 100644
index 0000000..917c47f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d8_31pf.cpp
@@ -0,0 +1,626 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d8_31pf.c
+ Functions:
+
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Modified to pass overflow flag through to basic math function.
+ The flag is passed back to the calling function by pointer reference.
+
+ Description: Per review comments...
+ (1) Removed include of "count.h" and "basic_op.h"
+ (2) Added includes of mult.h, shl.h, shr.h, add.h, sub.h, negate.h,
+ L_mult.h, and L_shr.h
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d8_31pf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define NB_PULSE 8 /* number of pulses */
+
+/* define values/representation for output codevector and sign */
+#define POS_CODE 8191
+#define NEG_CODE 8191
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decompress10
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ MSBs -- Word16 -- MSB part of the index
+ LSBs -- Word16 -- LSB part of the index
+ index1 -- Word16 -- index for first pos in pos_index[]
+ index2 -- Word16 -- index for second pos in pos_index[]
+ index3 -- Word16 -- index for third pos in pos_index[]
+
+ Outputs:
+ pos_indx[] -- array of type Word16 -- position of 3 pulses (decompressed)
+
+ pOverflow Flag set when overflow occurs, pointer of type Flag *
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+static void decompress10(
+ Word16 MSBs, /* i : MSB part of the index */
+ Word16 LSBs, /* i : LSB part of the index */
+ Word16 index1, /* i : index for first pos in pos_index[] */
+ Word16 index2, /* i : index for second pos in pos_index[] */
+ Word16 index3, /* i : index for third pos in pos_index[] */
+ Word16 pos_indx[], /* o : position of 3 pulses (decompressed) */
+ Flag *pOverflow) /* o : Flag set when overflow occurs */
+{
+ Word16 ia;
+ Word16 ib;
+ Word16 ic;
+ Word32 tempWord32;
+
+ /*
+ pos_indx[index1] = ((MSBs-25*(MSBs/25))%5)*2 + (LSBs-4*(LSBs/4))%2;
+ pos_indx[index2] = ((MSBs-25*(MSBs/25))/5)*2 + (LSBs-4*(LSBs/4))/2;
+ pos_indx[index3] = (MSBs/25)*2 + LSBs/4;
+ */
+
+ if (MSBs > 124)
+ {
+ MSBs = 124;
+ }
+
+ ia =
+ mult(
+ MSBs,
+ 1311,
+ pOverflow);
+
+ tempWord32 =
+ L_mult(
+ ia,
+ 25,
+ pOverflow);
+
+
+ ia = (Word16)(MSBs - (tempWord32 >> 1));
+ ib =
+ mult(
+ ia,
+ 6554,
+ pOverflow);
+
+ tempWord32 =
+ L_mult(
+ ib,
+ 5,
+ pOverflow);
+
+ ib = ia - (Word16)(tempWord32 >> 1);
+
+ ib =
+ shl(
+ ib,
+ 1,
+ pOverflow);
+
+
+ ic = LSBs - ((LSBs >> 2) << 2);
+
+
+ pos_indx[index1] = ib + (ic & 1);
+
+
+ ib =
+ mult(
+ ia,
+ 6554,
+ pOverflow);
+
+ ib =
+ shl(
+ ib,
+ 1,
+ pOverflow);
+
+
+ pos_indx[index2] = ib + (ic >> 1);
+
+
+ ib = LSBs >> 2;
+
+ ic =
+ mult(
+ MSBs,
+ 1311,
+ pOverflow);
+
+ ic =
+ shl(
+ ic,
+ 1,
+ pOverflow);
+
+ pos_indx[index3] =
+ add(
+ ib,
+ ic,
+ pOverflow);
+
+ return;
+}
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: decompress_code
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ indx[] -- array of type Word16 -- position and sign of
+ 8 pulses (compressed)
+
+ Outputs:
+ sign_indx[] -- array of type Word16 -- signs of 4 pulses (signs only)
+ pos_indx[] -- array of type Word16 -- position index of 8 pulses
+ (position only)
+ pOverflow pointer to type Flag -- Flag set when overflow occurs
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ PURPOSE: decompression of the linear codewords to 4+three indeces
+ one bit from each pulse is made robust to errors by
+ minimizing the phase shift of a bit error.
+ 4 signs (one for each track)
+ i0,i4,i1 => one index (7+3) bits, 3 LSBs more robust
+ i2,i6,i5 => one index (7+3) bits, 3 LSBs more robust
+ i3,i7 => one index (5+2) bits, 2-3 LSbs more robust
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+static void decompress_code(
+ Word16 indx[], /* i : position and sign of 8 pulses (compressed) */
+ Word16 sign_indx[], /* o : signs of 4 pulses (signs only) */
+ Word16 pos_indx[], /* o : position index of 8 pulses (position only) */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 ia;
+ Word16 ib;
+ Word16 MSBs;
+ Word16 LSBs;
+ Word16 MSBs0_24;
+ Word32 tempWord32;
+
+ for (i = 0; i < NB_TRACK_MR102; i++)
+ {
+ sign_indx[i] = indx[i];
+ }
+
+ /*
+ First index: 10x10x10 -> 2x5x2x5x2x5-> 125x2x2x2 -> 7+1x3 bits
+ MSBs = indx[NB_TRACK]/8;
+ LSBs = indx[NB_TRACK]%8;
+ */
+ MSBs = indx[NB_TRACK_MR102] >> 3;
+
+ LSBs = indx[NB_TRACK_MR102] & 0x7;
+
+ decompress10(
+ MSBs,
+ LSBs,
+ 0,
+ 4,
+ 1,
+ pos_indx,
+ pOverflow);
+
+ /*
+ Second index: 10x10x10 -> 2x5x2x5x2x5-> 125x2x2x2 -> 7+1x3 bits
+ MSBs = indx[NB_TRACK+1]/8;
+ LSBs = indx[NB_TRACK+1]%8;
+ */
+ MSBs = indx[NB_TRACK_MR102+1] >> 3;
+
+ LSBs = indx[NB_TRACK_MR102+1] & 0x7;
+
+ decompress10(
+ MSBs,
+ LSBs,
+ 2,
+ 6,
+ 5,
+ pos_indx,
+ pOverflow);
+
+ /*
+ Third index: 10x10 -> 2x5x2x5-> 25x2x2 -> 5+1x2 bits
+ MSBs = indx[NB_TRACK+2]/4;
+ LSBs = indx[NB_TRACK+2]%4;
+ MSBs0_24 = (MSBs*25+12)/32;
+ if ((MSBs0_24/5)%2==1)
+ pos_indx[3] = (4-(MSBs0_24%5))*2 + LSBs%2;
+ else
+ pos_indx[3] = (MSBs0_24%5)*2 + LSBs%2;
+ pos_indx[7] = (MSBs0_24/5)*2 + LSBs/2;
+ */
+
+ MSBs = indx[NB_TRACK_MR102+2] >> 2;
+
+ LSBs = indx[NB_TRACK_MR102+2] & 0x3;
+
+ tempWord32 =
+ L_mult(
+ MSBs,
+ 25,
+ pOverflow);
+
+ ia =
+ (Word16)
+ L_shr(
+ tempWord32,
+ 1,
+ pOverflow);
+
+ ia += 12;
+
+ MSBs0_24 = ia >> 5;
+
+
+ ia =
+ mult(
+ MSBs0_24,
+ 6554,
+ pOverflow);
+
+ ia &= 1;
+
+
+ ib =
+ mult(
+ MSBs0_24,
+ 6554,
+ pOverflow);
+
+ tempWord32 =
+ L_mult(
+ ib,
+ 5,
+ pOverflow);
+
+
+ ib = MSBs0_24 - (Word16)(tempWord32 >> 1);
+
+ if (ia == 1)
+ {
+ ib = 4 - ib;
+
+ }
+
+
+ ib =
+ shl(
+ ib,
+ 1,
+ pOverflow);
+
+ ia = LSBs & 0x1;
+
+ pos_indx[3] =
+ add(
+ ib,
+ ia,
+ pOverflow);
+
+ ia =
+ mult(
+ MSBs0_24,
+ 6554,
+ pOverflow);
+
+ ia =
+ shl(
+ ia,
+ 1,
+ pOverflow);
+
+ pos_indx[7] = ia + (LSBs >> 1);
+
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dec_8i40_31bits
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ index array of type Word16 -- index of 8 pulses (sign+position)
+
+ Outputs:
+ cod array of type Word16 -- algebraic (fixed) codebook excitation
+ pOverflow pointer to type Flag -- Flag set when overflow occurs
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ PURPOSE: Builds the innovative codevector from the received
+ index of algebraic codebook.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void dec_8i40_31bits(
+ Word16 index[], /* i : index of 8 pulses (sign+position) */
+ Word16 cod[], /* o : algebraic (fixed) codebook excitation */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 j;
+ Word16 pos1;
+ Word16 pos2;
+ Word16 sign;
+
+ Word16 linear_signs[NB_TRACK_MR102];
+ Word16 linear_codewords[NB_PULSE];
+
+ for (i = 0; i < L_CODE; i++)
+ {
+ cod[i] = 0;
+ }
+
+ decompress_code(
+ index,
+ linear_signs,
+ linear_codewords,
+ pOverflow);
+
+ /* decode the positions and signs of pulses and build the codeword */
+ for (j = 0; j < NB_TRACK_MR102; j++) /* NB_TRACK_MR102 = 4 */
+ {
+ /* position of pulse "j" */
+
+ pos1 = (linear_codewords[j] << 2) + j;
+
+
+ if (linear_signs[j] == 0)
+ {
+ sign = POS_CODE; /* +1.0 */
+ }
+ else
+ {
+ sign = -NEG_CODE; /* -1.0 */
+ }
+
+ if (pos1 < L_SUBFR)
+ {
+ cod[pos1] = sign; /* avoid buffer overflow */
+ }
+
+ /* compute index i */
+ /* position of pulse "j+4" */
+
+ pos2 = (linear_codewords[j + 4] << 2) + j;
+
+
+ if (pos2 < pos1)
+ {
+ sign = negate(sign);
+ }
+
+ if (pos2 < L_SUBFR)
+ {
+ cod[pos2] += sign; /* avoid buffer overflow */
+ }
+
+
+ } /* for (j = 0; j < NB_TRACK_MR102; j++) */
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/d8_31pf.h b/media/codecs/amrnb/dec/src/d8_31pf.h
new file mode 100644
index 0000000..162685f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d8_31pf.h
@@ -0,0 +1,120 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/d2_9pf.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the d8_31pf.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef d8_31pf_h
+#define d8_31pf_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void dec_8i40_31bits(
+ Word16 index[], /* i : index of 8 pulses (sign+position) */
+ Word16 cod[], /* o : algebraic (fixed) codebook excitation */
+ Flag * pOverflow /* o : Flag set when overflow occurs */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _d8_31PF_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/d_gain_c.cpp b/media/codecs/amrnb/dec/src/d_gain_c.cpp
new file mode 100644
index 0000000..b6c62f8
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d_gain_c.cpp
@@ -0,0 +1,254 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d_gain_c.c
+ Functions: d_gain_c
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated include files and intput/output section. Changed .tab
+ files to .c files.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+ ------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ pred_state = pointer to sturcture type gc_predState. MA predictor state
+ mode = AMR mode (MR795 or MR122) of type enum Mode
+ index = received quantization index of type Word16
+ code[] = pointer to innovation codevector of type Word16
+ pOverflow= pointer to value indicating existence of overflow (Flag)
+
+ Outputs:
+ pred_state = pointer to sturcture type gc_predState. MA predictor state
+ gain_code = pointer to decoded innovation gain of type Word16
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Function : d_gain_code
+ Purpose : Decode the fixed codebook gain using the received index.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_gain_c.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d_gain_c.h"
+#include "typedef.h"
+#include "mode.h"
+
+#include "oper_32b.h"
+#include "cnst.h"
+#include "log2.h"
+#include "pow2.h"
+#include "gc_pred.h"
+
+#include "basic_op.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL FUNCTION REFERENCES
+ ; Declare functions defined elsewhere and referenced in this module
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern const Word16 qua_gain_code[];
+
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+void d_gain_code(
+ gc_predState *pred_state, /* i/o : MA predictor state */
+ enum Mode mode, /* i : AMR mode (MR795 or MR122) */
+ Word16 index, /* i : received quantization index */
+ Word16 code[], /* i : innovation codevector */
+ Word16 *gain_code, /* o : decoded innovation gain */
+ Flag *pOverflow
+)
+{
+ Word16 gcode0, exp, frac;
+ const Word16 *p;
+ Word16 qua_ener_MR122, qua_ener;
+ Word16 exp_inn_en;
+ Word16 frac_inn_en;
+ Word32 L_tmp;
+ Word16 tbl_tmp;
+ Word16 temp;
+ /*-------------- Decode codebook gain ---------------*/
+
+ /*-------------------------------------------------------------------*
+ * predict codebook gain *
+ * ~~~~~~~~~~~~~~~~~~~~~ *
+ * gc0 = Pow2(int(d)+frac(d)) *
+ * = 2^exp + 2^frac *
+ * *
+ *-------------------------------------------------------------------*/
+
+ gc_pred(pred_state, mode, code, &exp, &frac,
+ &exp_inn_en, &frac_inn_en, pOverflow);
+
+ index &= 31; /* index < 32, to avoid buffer overflow */
+ tbl_tmp = index + (index << 1);
+
+ p = &qua_gain_code[tbl_tmp];
+
+ /* Different scalings between MR122 and the other modes */
+ temp = sub((Word16)mode, (Word16)MR122, pOverflow);
+ if (temp == 0)
+ {
+ gcode0 = (Word16)(Pow2(exp, frac, pOverflow)); /* predicted gain */
+ gcode0 = shl(gcode0, 4, pOverflow);
+ *gain_code = shl(mult(gcode0, *p++, pOverflow), 1, pOverflow);
+ }
+ else
+ {
+ gcode0 = (Word16)(Pow2(14, frac, pOverflow));
+ L_tmp = L_mult(*p++, gcode0, pOverflow);
+ L_tmp = L_shr(L_tmp, sub(9, exp, pOverflow), pOverflow);
+ *gain_code = extract_h(L_tmp); /* Q1 */
+ }
+
+ /*-------------------------------------------------------------------*
+ * update table of past quantized energies *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
+ *-------------------------------------------------------------------*/
+ qua_ener_MR122 = *p++;
+ qua_ener = *p++;
+ gc_pred_update(pred_state, qua_ener_MR122, qua_ener);
+
+ return;
+}
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/d_gain_p.cpp b/media/codecs/amrnb/dec/src/d_gain_p.cpp
new file mode 100644
index 0000000..99446db
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d_gain_p.cpp
@@ -0,0 +1,192 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d_gain_p.c
+ Functions: d_gain_p
+
+ Date: 01/31/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description:
+ (1) Removed extra includes
+ (2) Replaced function calls to basic math operations with ANSI C standard
+ mathemtical operations.
+ (3) Placed code in the proper software template.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+ ------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ mode -- enumerated type -- AMR mode
+ index -- Word16 -- index of quantization
+ Outputs:
+ None
+
+ Returns:
+ Word16 gain -- (Q14)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Function : d_gain_pitch
+ Purpose : Decodes the pitch gain using the received index.
+ output is in Q14
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_gain_p.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d_gain_p.h"
+#include "typedef.h"
+#include "mode.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL FUNCTION REFERENCES
+ ; Declare functions defined elsewhere and referenced in this module
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern const Word16 qua_gain_pitch[];
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+Word16 d_gain_pitch( /* return value: gain (Q14) */
+ enum Mode mode, /* i : AMR mode */
+ Word16 index /* i : index of quantization */
+)
+{
+ Word16 gain;
+
+ gain = qua_gain_pitch[index];
+
+ if (mode == MR122)
+ {
+ /* clear 2 LSBits */
+ gain &= 0xFFFC;
+ }
+
+ return gain;
+}
diff --git a/media/codecs/amrnb/dec/src/d_plsf.cpp b/media/codecs/amrnb/dec/src/d_plsf.cpp
new file mode 100644
index 0000000..138193f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d_plsf.cpp
@@ -0,0 +1,207 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d_plsf.c
+ Functions:
+
+
+ Date: 04/14/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removed the functions d_plsf_init and d_plsf_exit.
+ The d_plsf related structure is no longer dynamically allocated.
+
+ Description: Removed q_plsf_5.tab from Include section and added
+ q_plsf_5_tbl.h to Include section. Changed "mean_lsf"
+ to "mean_lsf_5" in D_plsf_reset().
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ common part (reset) of LSF decoder
+ module (rest in d_plsf_3.c and d_plsf_5.c)
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+#include "copy.h"
+#include "d_plsf.h"
+#include "q_plsf_5_tbl.h"
+
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL VARIABLES REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: D_plsf_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to structure of type D_plsf_reset
+
+ Outputs:
+ fields of the structure pointed to by state is initialized to zero
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Resets state memory
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_plsf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int D_plsf_reset (D_plsfState *state)
+{
+ Word16 i;
+
+ if (state == (D_plsfState *) NULL){
+ // fprintf(stderr, "D_plsf_reset: invalid parameter\n");
+ return -1;
+ }
+
+ for (i = 0; i < M; i++){
+ state->past_r_q[i] = 0; // Past quantized prediction error
+ }
+
+ // Past dequantized lsfs
+ Copy(mean_lsf, &state->past_lsf_q[0], M);
+
+ return 0;
+}
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 D_plsf_reset(D_plsfState *state)
+{
+ Word16 i;
+
+ if (state == (D_plsfState *) NULL)
+ {
+ /* fprintf(stderr, "D_plsf_reset: invalid parameter\n"); */
+ return -1;
+ }
+
+ for (i = 0; i < M; i++)
+ {
+ state->past_r_q[i] = 0; /* Past quantized prediction error */
+ }
+
+ /* Past dequantized lsfs */
+ Copy(mean_lsf_5, &state->past_lsf_q[0], M);
+
+ return 0;
+
+}
diff --git a/media/codecs/amrnb/dec/src/d_plsf_3.cpp b/media/codecs/amrnb/dec/src/d_plsf_3.cpp
new file mode 100644
index 0000000..7b31d04
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d_plsf_3.cpp
@@ -0,0 +1,496 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d_plsf_3.c
+ Functions: D_plsf_3
+
+ ------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st -- Pointer to type struct D_plsfState
+ mode -- enum Mode -- coder mode
+ bfi -- Word16 -- bad frame indicator (set to 1 if a bad frame is received)
+ indice -- Pointer to type Word16 -- quantization indices of
+ 3 submatrices, Q0
+
+ Outputs:
+ st -- Pointer to type struct D_plsfState
+ lsp1_q -- Pointer to type Word16 -- quantized 1st LSP vector Q15
+ pOverflow -- Pointer to type Flag -- Flag set when overflow occurs
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ PURPOSE: Decodes the LSP parameters using the received quantization
+ indices.1st order MA prediction and split by 3 vector
+ quantization (split-VQ)
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_plsf_3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d_plsf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "lsp_lsf.h"
+#include "reorder.h"
+#include "copy.h"
+#include "q_plsf_3_tbl.h"
+
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define ALPHA 29491 /* ALPHA -> 0.9 */
+#define ONE_ALPHA 3277 /* ONE_ALPHA-> (1.0-ALPHA) */
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+void D_plsf_3(
+ D_plsfState *st, /* i/o: State struct */
+ enum Mode mode, /* i : coder mode */
+ Word16 bfi, /* i : bad frame indicator (set to 1 if a */
+ /* bad frame is received) */
+ Word16 * indice, /* i : quantization indices of 3 submatrices, Q0 */
+ Word16 * lsp1_q, /* o : quantized 1st LSP vector, Q15 */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 temp;
+ Word16 index;
+
+ Word16 lsf1_r[M];
+ Word16 lsf1_q[M];
+
+ if (bfi != 0) /* if bad frame */
+ {
+ /* use the past LSFs slightly shifted towards their mean */
+
+ for (i = 0; i < M; i++)
+ {
+ /* lsfi_q[i] = ALPHA*past_lsf_q[i] + ONE_ALPHA*mean_lsf[i]; */
+ temp =
+ mult(
+ st->past_lsf_q[i],
+ ALPHA,
+ pOverflow);
+
+ index =
+ mult(
+ mean_lsf_3[i],
+ ONE_ALPHA,
+ pOverflow);
+
+ lsf1_q[i] =
+ add(
+ index,
+ temp,
+ pOverflow);
+ }
+
+ /* estimate past quantized residual to be used in next frame */
+ if (mode != MRDTX)
+ {
+ for (i = 0; i < M; i++)
+ {
+ /* temp = mean_lsf[i] + past_r2_q[i] * PRED_FAC; */
+
+ temp =
+ mult(
+ st->past_r_q[i],
+ pred_fac_3[i],
+ pOverflow);
+
+ temp =
+ add(
+ mean_lsf_3[i],
+ temp,
+ pOverflow);
+
+ st->past_r_q[i] =
+ sub(
+ lsf1_q[i],
+ temp,
+ pOverflow);
+ }
+
+ } /* if (mode == MRDTX) */
+ else
+ {
+ for (i = 0; i < M; i++)
+ {
+ /* temp = mean_lsf[i] + past_r2_q[i]; */
+
+ temp =
+ add(
+ mean_lsf_3[i],
+ st->past_r_q[i],
+ pOverflow);
+
+ st->past_r_q[i] =
+ sub(
+ lsf1_q[i],
+ temp,
+ pOverflow);
+ }
+ }
+
+ } /* if (bfi != 0) */
+
+ else /* if good LSFs received */
+ {
+
+ Word16 index_limit_1 = 0;
+ Word16 index_limit_2 = (DICO2_SIZE - 1) * 3;
+ Word16 index_limit_3 = 0;
+
+ const Word16 *p_cb1;
+ const Word16 *p_cb2;
+ const Word16 *p_cb3;
+ const Word16 *p_dico;
+
+
+ p_cb2 = dico2_lsf_3; /* size DICO2_SIZE*3 */
+
+ if ((mode == MR475) || (mode == MR515))
+ { /* MR475, MR515 */
+ p_cb1 = dico1_lsf_3; /* size DICO1_SIZE*3 */
+ p_cb3 = mr515_3_lsf; /* size MR515_3_SIZE*4 */
+
+ index_limit_1 = (DICO1_SIZE - 1) * 3;
+ index_limit_3 = (MR515_3_SIZE - 1) * 4;
+
+ }
+ else if (mode == MR795)
+ { /* MR795 */
+ p_cb1 = mr795_1_lsf; /* size MR795_1_SIZE*3 */
+ p_cb3 = dico3_lsf_3; /* size DICO3_SIZE*4 */
+
+ index_limit_1 = (MR795_1_SIZE - 1) * 3;
+ index_limit_3 = (DICO3_SIZE - 1) * 4;
+
+ }
+ else
+ { /* MR59, MR67, MR74, MR102, MRDTX */
+ p_cb1 = dico1_lsf_3; /* size DICO1_SIZE*3 */
+ p_cb3 = dico3_lsf_3; /* size DICO3_SIZE*4 */
+
+ index_limit_1 = (DICO1_SIZE - 1) * 3;
+ index_limit_3 = (DICO3_SIZE - 1) * 4;
+
+ }
+
+ /* decode prediction residuals from 3 received indices */
+
+ index = *indice++;
+
+ /* temp = 3*index; */
+ temp = index + (index << 1);
+
+ if (temp > index_limit_1)
+ {
+ temp = index_limit_1; /* avoid buffer overrun */
+ }
+
+ p_dico = &p_cb1[temp];
+
+ lsf1_r[0] = *p_dico++;
+ lsf1_r[1] = *p_dico++;
+ lsf1_r[2] = *p_dico++;
+
+ index = *indice++;
+
+ if (mode == MR475 || mode == MR515)
+ { /* MR475, MR515 only using every second entry */
+ index <<= 1;
+ }
+
+ /* temp = 3*index */
+ temp = index + (index << 1);
+
+ if (temp > index_limit_2)
+ {
+ temp = index_limit_2; /* avoid buffer overrun */
+ }
+
+ p_dico = &p_cb2[temp];
+
+ lsf1_r[3] = *p_dico++;
+ lsf1_r[4] = *p_dico++;
+ lsf1_r[5] = *p_dico++;
+
+ index = *indice++;
+
+ temp = index << 2;
+
+ if (temp > index_limit_3)
+ {
+ temp = index_limit_3; /* avoid buffer overrun */
+ }
+
+
+ p_dico = &p_cb3[temp];
+
+ lsf1_r[6] = *p_dico++;
+ lsf1_r[7] = *p_dico++;
+ lsf1_r[8] = *p_dico++;
+ lsf1_r[9] = *p_dico++;
+
+ /* Compute quantized LSFs and update the past quantized residual */
+
+ if (mode != MRDTX)
+ {
+ for (i = 0; i < M; i++)
+ {
+ temp =
+ mult(
+ st->past_r_q[i],
+ pred_fac_3[i],
+ pOverflow);
+
+ temp =
+ add(
+ mean_lsf_3[i],
+ temp,
+ pOverflow);
+
+ lsf1_q[i] =
+ add(
+ lsf1_r[i],
+ temp,
+ pOverflow);
+
+ st->past_r_q[i] = lsf1_r[i];
+ }
+ }
+ else
+ {
+ for (i = 0; i < M; i++)
+ {
+ temp =
+ add(
+ mean_lsf_3[i],
+ st->past_r_q[i],
+ pOverflow);
+
+ lsf1_q[i] =
+ add(
+ lsf1_r[i],
+ temp,
+ pOverflow);
+
+ st->past_r_q[i] = lsf1_r[i];
+ }
+ }
+
+ }
+
+ /* verification that LSFs has minimum distance of LSF_GAP Hz */
+
+ Reorder_lsf(
+ lsf1_q,
+ LSF_GAP,
+ M,
+ pOverflow);
+
+ Copy(
+ lsf1_q,
+ st->past_lsf_q,
+ M);
+
+ /* convert LSFs to the cosine domain */
+
+ Lsf_lsp(
+ lsf1_q,
+ lsp1_q,
+ M,
+ pOverflow);
+
+ return;
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Init_D_plsf_3
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type D_plsfState
+ index = Word16, past_rq_init[] index [0, 7]
+
+ Outputs:
+ st = pointer to a structure of type D_plsfState
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function initializes the D_plsfState structure.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_plsf_3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+void Init_D_plsf_3(
+ D_plsfState *st, /* i/o: State struct */
+ Word16 index /* i : past_rq_init[] index [0, 7] */)
+{
+ Copy(
+ &past_rq_init[index * M],
+ st->past_r_q,
+ M);
+}
diff --git a/media/codecs/amrnb/dec/src/d_plsf_5.cpp b/media/codecs/amrnb/dec/src/d_plsf_5.cpp
new file mode 100644
index 0000000..7068c0a
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/d_plsf_5.cpp
@@ -0,0 +1,539 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/d_plsf_5.c
+
+ Date: 04/24/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Made changes based on review meeting.
+
+ Description: Synchronized file with UMTS version 3.2.0. Updated coding
+ template. Removed unnecessary include files.
+
+ Description: Updated to accept new parameter, Flag *pOverflow.
+
+ Description:
+ (1) Removed "count.h" and "basic_op.h" and replaced with individual include
+ files (add.h, sub.h, etc.)
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "d_plsf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "lsp_lsf.h"
+#include "reorder.h"
+#include "cnst.h"
+#include "copy.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+ /* ALPHA -> 0.95 */
+ /* ONE_ALPHA-> (1.0-ALPHA) */
+#define ALPHA 31128
+#define ONE_ALPHA 1639
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+ /* These tables are defined in q_plsf_5_tbl.c */
+ extern const Word16 mean_lsf_5[];
+ extern const Word16 dico1_lsf_5[];
+ extern const Word16 dico2_lsf_5[];
+ extern const Word16 dico3_lsf_5[];
+ extern const Word16 dico4_lsf_5[];
+ extern const Word16 dico5_lsf_5[];
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: D_plsf_5
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type D_plsfState
+ bfi = bad frame indicator; set to 1 if a bad frame is received (Word16)
+ indice = pointer to quantization indices of 5 submatrices (Word16)
+ lsp1_q = pointer to the quantized 1st LSP vector (Word16)
+ lsp2_q = pointer to the quantized 2nd LSP vector (Word16)
+
+ Outputs:
+ lsp1_q points to the updated quantized 1st LSP vector
+ lsp2_q points to the updated quantized 2nd LSP vector
+ Flag *pOverflow -- Flag set when overflow occurs.
+
+ Returns:
+ return_value = 0 (int)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function decodes the 2 sets of LSP parameters in a frame using the
+ received quantization indices.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ d_plsf_5.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int D_plsf_5 (
+ D_plsfState *st, // i/o: State variables
+ Word16 bfi, // i : bad frame indicator (set to 1 if a bad
+ frame is received)
+ Word16 *indice, // i : quantization indices of 5 submatrices, Q0
+ Word16 *lsp1_q, // o : quantized 1st LSP vector (M), Q15
+ Word16 *lsp2_q // o : quantized 2nd LSP vector (M), Q15
+)
+{
+ Word16 i;
+ const Word16 *p_dico;
+ Word16 temp, sign;
+ Word16 lsf1_r[M], lsf2_r[M];
+ Word16 lsf1_q[M], lsf2_q[M];
+
+ if (bfi != 0) // if bad frame
+ {
+ // use the past LSFs slightly shifted towards their mean
+
+ for (i = 0; i < M; i++)
+ {
+ // lsfi_q[i] = ALPHA*st->past_lsf_q[i] + ONE_ALPHA*mean_lsf[i];
+
+ lsf1_q[i] = add (mult (st->past_lsf_q[i], ALPHA),
+ mult (mean_lsf[i], ONE_ALPHA));
+
+ lsf2_q[i] = lsf1_q[i];
+ }
+
+ // estimate past quantized residual to be used in next frame
+
+ for (i = 0; i < M; i++)
+ {
+ // temp = mean_lsf[i] + st->past_r_q[i] * LSP_PRED_FAC_MR122;
+
+ temp = add (mean_lsf[i], mult (st->past_r_q[i],
+ LSP_PRED_FAC_MR122));
+
+ st->past_r_q[i] = sub (lsf2_q[i], temp);
+ }
+ }
+ else
+ // if good LSFs received
+ {
+ // decode prediction residuals from 5 received indices
+
+ p_dico = &dico1_lsf[shl (indice[0], 2)];
+ lsf1_r[0] = *p_dico++;
+ lsf1_r[1] = *p_dico++;
+ lsf2_r[0] = *p_dico++;
+ lsf2_r[1] = *p_dico++;
+
+ p_dico = &dico2_lsf[shl (indice[1], 2)];
+ lsf1_r[2] = *p_dico++;
+ lsf1_r[3] = *p_dico++;
+ lsf2_r[2] = *p_dico++;
+ lsf2_r[3] = *p_dico++;
+
+ sign = indice[2] & 1;
+ i = shr (indice[2], 1);
+ p_dico = &dico3_lsf[shl (i, 2)];
+
+ if (sign == 0)
+ {
+ lsf1_r[4] = *p_dico++;
+ lsf1_r[5] = *p_dico++;
+ lsf2_r[4] = *p_dico++;
+ lsf2_r[5] = *p_dico++;
+ }
+ else
+ {
+ lsf1_r[4] = negate (*p_dico++);
+ lsf1_r[5] = negate (*p_dico++);
+ lsf2_r[4] = negate (*p_dico++);
+ lsf2_r[5] = negate (*p_dico++);
+ }
+
+ p_dico = &dico4_lsf[shl (indice[3], 2)];
+ lsf1_r[6] = *p_dico++;
+ lsf1_r[7] = *p_dico++;
+ lsf2_r[6] = *p_dico++;
+ lsf2_r[7] = *p_dico++;
+
+ p_dico = &dico5_lsf[shl (indice[4], 2)];
+ lsf1_r[8] = *p_dico++;
+ lsf1_r[9] = *p_dico++;
+ lsf2_r[8] = *p_dico++;
+ lsf2_r[9] = *p_dico++;
+
+ // Compute quantized LSFs and update the past quantized residual
+ for (i = 0; i < M; i++)
+ {
+ temp = add (mean_lsf[i], mult (st->past_r_q[i],
+ LSP_PRED_FAC_MR122));
+ lsf1_q[i] = add (lsf1_r[i], temp);
+ lsf2_q[i] = add (lsf2_r[i], temp);
+ st->past_r_q[i] = lsf2_r[i];
+ }
+ }
+
+ // verification that LSFs have minimum distance of LSF_GAP Hz
+
+ Reorder_lsf (lsf1_q, LSF_GAP, M);
+ Reorder_lsf (lsf2_q, LSF_GAP, M);
+
+ Copy (lsf2_q, st->past_lsf_q, M);
+
+ // convert LSFs to the cosine domain
+
+ Lsf_lsp (lsf1_q, lsp1_q, M);
+ Lsf_lsp (lsf2_q, lsp2_q, M);
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void D_plsf_5(
+ D_plsfState *st, /* i/o: State variables */
+ Word16 bfi, /* i : bad frame indicator (set to 1 if a bad
+ frame is received) */
+ Word16 *indice, /* i : quantization indices of 5 submatrices, Q0 */
+ Word16 *lsp1_q, /* o : quantized 1st LSP vector (M), Q15 */
+ Word16 *lsp2_q, /* o : quantized 2nd LSP vector (M), Q15 */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 temp;
+ Word16 sign;
+
+ const Word16 *p_dico;
+
+ Word16 lsf1_r[M];
+ Word16 lsf2_r[M];
+ Word16 lsf1_q[M];
+ Word16 lsf2_q[M];
+
+ if (bfi != 0) /* if bad frame */
+ {
+ /* use the past LSFs slightly shifted towards their mean */
+
+ for (i = 0; i < M; i++)
+ {
+ /*
+ * lsfi_q[i] = ALPHA*st->past_lsf_q[i] +
+ * ONE_ALPHA*mean_lsf[i];
+ */
+
+ temp =
+ mult(
+ st->past_lsf_q[i],
+ ALPHA,
+ pOverflow);
+
+ sign =
+ mult(
+ *(mean_lsf_5 + i),
+ ONE_ALPHA,
+ pOverflow);
+
+ *(lsf1_q + i) =
+ add(
+ sign,
+ temp,
+ pOverflow);
+
+ *(lsf2_q + i) = *(lsf1_q + i);
+
+ /*
+ * estimate past quantized residual to be used in
+ * next frame
+ */
+
+ /*
+ * temp = mean_lsf[i] +
+ * st->past_r_q[i] * LSP_PRED_FAC_MR122;
+ */
+
+ temp =
+ mult(
+ st->past_r_q[i],
+ LSP_PRED_FAC_MR122,
+ pOverflow);
+
+ temp =
+ add(
+ *(mean_lsf_5 + i),
+ temp,
+ pOverflow);
+
+ st->past_r_q[i] =
+ sub(
+ *(lsf2_q + i),
+ temp,
+ pOverflow);
+ }
+ }
+ else
+ /* if good LSFs received */
+ {
+ /* decode prediction residuals from 5 received indices */
+
+ temp =
+ shl(
+ *(indice),
+ 2,
+ pOverflow);
+
+ p_dico = &dico1_lsf_5[temp];
+
+ *(lsf1_r + 0) = *p_dico++;
+ *(lsf1_r + 1) = *p_dico++;
+ *(lsf2_r + 0) = *p_dico++;
+ *(lsf2_r + 1) = *p_dico++;
+
+ temp =
+ shl(
+ *(indice + 1),
+ 2,
+ pOverflow);
+
+ p_dico = &dico2_lsf_5[temp];
+
+ *(lsf1_r + 2) = *p_dico++;
+ *(lsf1_r + 3) = *p_dico++;
+ *(lsf2_r + 2) = *p_dico++;
+ *(lsf2_r + 3) = *p_dico++;
+
+ sign = *(indice + 2) & 1;
+
+ if (*(indice + 2) < 0)
+ {
+ i = ~(~(*(indice + 2)) >> 1);
+ }
+ else
+ {
+ i = *(indice + 2) >> 1;
+ }
+
+ temp =
+ shl(
+ i,
+ 2,
+ pOverflow);
+
+ p_dico = &dico3_lsf_5[temp];
+
+ if (sign == 0)
+ {
+ *(lsf1_r + 4) = *p_dico++;
+ *(lsf1_r + 5) = *p_dico++;
+ *(lsf2_r + 4) = *p_dico++;
+ *(lsf2_r + 5) = *p_dico++;
+ }
+ else
+ {
+ *(lsf1_r + 4) = negate(*p_dico++);
+ *(lsf1_r + 5) = negate(*p_dico++);
+ *(lsf2_r + 4) = negate(*p_dico++);
+ *(lsf2_r + 5) = negate(*p_dico++);
+ }
+
+ temp =
+ shl(
+ *(indice + 3),
+ 2,
+ pOverflow);
+
+ p_dico = &dico4_lsf_5[temp];
+
+ *(lsf1_r + 6) = *p_dico++;
+ *(lsf1_r + 7) = *p_dico++;
+ *(lsf2_r + 6) = *p_dico++;
+ *(lsf2_r + 7) = *p_dico++;
+
+ temp =
+ shl(
+ *(indice + 4),
+ 2,
+ pOverflow);
+
+ p_dico = &dico5_lsf_5[temp];
+
+ *(lsf1_r + 8) = *p_dico++;
+ *(lsf1_r + 9) = *p_dico++;
+ *(lsf2_r + 8) = *p_dico++;
+ *(lsf2_r + 9) = *p_dico++;
+
+ /* Compute quantized LSFs and update the past quantized
+ residual */
+ for (i = 0; i < M; i++)
+ {
+ temp =
+ mult(
+ st->past_r_q[i],
+ LSP_PRED_FAC_MR122,
+ pOverflow);
+
+ temp =
+ add(
+ *(mean_lsf_5 + i),
+ temp,
+ pOverflow);
+
+ *(lsf1_q + i) =
+ add(
+ *(lsf1_r + i),
+ temp,
+ pOverflow);
+
+ *(lsf2_q + i) =
+ add(
+ *(lsf2_r + i),
+ temp,
+ pOverflow);
+
+ st->past_r_q[i] = *(lsf2_r + i);
+ }
+ }
+
+ /* verification that LSFs have minimum distance of LSF_GAP Hz */
+
+ Reorder_lsf(
+ lsf1_q,
+ LSF_GAP,
+ M,
+ pOverflow);
+
+ Reorder_lsf(
+ lsf2_q,
+ LSF_GAP,
+ M,
+ pOverflow);
+
+ Copy(
+ lsf2_q,
+ st->past_lsf_q,
+ M);
+
+ /* convert LSFs to the cosine domain */
+
+ Lsf_lsp(
+ lsf1_q,
+ lsp1_q,
+ M,
+ pOverflow);
+
+ Lsf_lsp(
+ lsf2_q,
+ lsp2_q,
+ M,
+ pOverflow);
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/dec_amr.cpp b/media/codecs/amrnb/dec/src/dec_amr.cpp
new file mode 100644
index 0000000..be15475
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_amr.cpp
@@ -0,0 +1,2374 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+ Pathname: ./audio/gsm-amr/c/src/dec_amr.c
+ Funtions: Decoder_amr_init
+ Decoder_amr_reset
+ Decoder_amr
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the function used to decode one speech frame using a given
+ codec mode. The functions used to initialize, reset, and exit are also
+ included in this file.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <string.h>
+
+#include "dec_amr.h"
+#include "typedef.h"
+#include "cnst.h"
+#include "copy.h"
+#include "set_zero.h"
+#include "syn_filt.h"
+#include "d_plsf.h"
+#include "agc.h"
+#include "int_lpc.h"
+#include "dec_gain.h"
+#include "dec_lag3.h"
+#include "dec_lag6.h"
+#include "d2_9pf.h"
+#include "d2_11pf.h"
+#include "d3_14pf.h"
+#include "d4_17pf.h"
+#include "d8_31pf.h"
+#include "d1035pf.h"
+#include "pred_lt.h"
+#include "d_gain_p.h"
+#include "d_gain_c.h"
+#include "dec_gain.h"
+#include "ec_gains.h"
+#include "ph_disp.h"
+#include "c_g_aver.h"
+#include "int_lsf.h"
+#include "lsp_lsf.h"
+#include "lsp_avg.h"
+#include "bgnscd.h"
+#include "ex_ctrl.h"
+#include "sqrt_l.h"
+#include "frame.h"
+#include "bitno_tab.h"
+#include "b_cn_cod.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Decoder_amr_init
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a pointer to structures of type Decoder_amrState
+
+ Outputs:
+ structure pointed to by the pointer which is pointed to by state is
+ initialized to each field's initial values
+
+ state pointer points to the address of the memory allocated by
+ Decoder_amr_init function
+
+ Returns:
+ return_value = 0, if the initialization was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function allocates and initializes state memory used by the Decoder_amr
+ function. It stores the pointer to the filter status structure in state. This
+ pointer has to be passed to Decoder_amr in each call. The function returns
+ 0, if initialization was successful and -1, otherwise.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dec_amr.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Decoder_amr_init (Decoder_amrState **state)
+{
+ Decoder_amrState* s;
+ Word16 i;
+
+ if (state == (Decoder_amrState **) NULL){
+ fprintf(stderr, "Decoder_amr_init: invalid parameter\n");
+ return -1;
+ }
+ *state = NULL;
+
+ // allocate memory
+ if ((s= (Decoder_amrState *) malloc(sizeof(Decoder_amrState))) == NULL){
+ fprintf(stderr, "Decoder_amr_init: can not malloc state structure\n");
+ return -1;
+ }
+
+ s->T0_lagBuff = 40;
+ s->inBackgroundNoise = 0;
+ s->voicedHangover = 0;
+ for (i = 0; i < 9; i++)
+ s->ltpGainHistory[i] = 0;
+
+ s->lsfState = NULL;
+ s->ec_gain_p_st = NULL;
+ s->ec_gain_c_st = NULL;
+ s->pred_state = NULL;
+ s->ph_disp_st = NULL;
+ s->dtxDecoderState = NULL;
+
+ if (D_plsf_init(&s->lsfState) ||
+ ec_gain_pitch_init(&s->ec_gain_p_st) ||
+ ec_gain_code_init(&s->ec_gain_c_st) ||
+ gc_pred_init(&s->pred_state) ||
+ Cb_gain_average_init(&s->Cb_gain_averState) ||
+ lsp_avg_init(&s->lsp_avg_st) ||
+ Bgn_scd_init(&s->background_state) ||
+ ph_disp_init(&s->ph_disp_st) ||
+ dtx_dec_init(&s->dtxDecoderState)) {
+ Decoder_amr_exit(&s);
+ return -1;
+ }
+
+ Decoder_amr_reset(s, (enum Mode)0);
+ *state = s;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Decoder_amr_init(Decoder_amrState *s)
+{
+ Word16 i;
+
+ if (s == (Decoder_amrState *) NULL)
+ {
+ /* fprint(stderr, "Decoder_amr_init: invalid parameter\n"); */
+ return(-1);
+ }
+
+ s->T0_lagBuff = 40;
+ s->inBackgroundNoise = 0;
+ s->voicedHangover = 0;
+
+ /* Initialize overflow Flag */
+
+ s->overflow = 0;
+
+ for (i = 0; i < LTP_GAIN_HISTORY_LEN; i++)
+ {
+ s->ltpGainHistory[i] = 0;
+ }
+
+ D_plsf_reset(&s->lsfState);
+ ec_gain_pitch_reset(&s->ec_gain_p_st);
+ ec_gain_code_reset(&s->ec_gain_c_st);
+ Cb_gain_average_reset(&s->Cb_gain_averState);
+ lsp_avg_reset(&s->lsp_avg_st);
+ Bgn_scd_reset(&s->background_state);
+ ph_disp_reset(&s->ph_disp_st);
+ dtx_dec_reset(&s->dtxDecoderState);
+ gc_pred_reset(&s->pred_state);
+
+ Decoder_amr_reset(s, MR475);
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Decoder_amr_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type Decoder_amrState
+ mode = codec mode (enum Mode)
+
+ Outputs:
+ structure pointed to by state is initialized to its reset value
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function resets the state memory used by the Decoder_amr function. It
+ returns a 0, if reset was successful and -1, otherwise.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dec_amr.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Decoder_amr_reset (Decoder_amrState *state, enum Mode mode)
+{
+ Word16 i;
+
+ if (state == (Decoder_amrState *) NULL){
+ fprintf(stderr, "Decoder_amr_reset: invalid parameter\n");
+ return -1;
+ }
+
+ // Initialize static pointer
+ state->exc = state->old_exc + PIT_MAX + L_INTERPOL;
+
+ // Static vectors to zero
+ Set_zero (state->old_exc, PIT_MAX + L_INTERPOL);
+
+ if (mode != MRDTX)
+ Set_zero (state->mem_syn, M);
+
+ // initialize pitch sharpening
+ state->sharp = SHARPMIN;
+ state->old_T0 = 40;
+
+ // Initialize state->lsp_old []
+
+ if (mode != MRDTX) {
+ Copy(lsp_init_data, &state->lsp_old[0], M);
+ }
+
+ // Initialize memories of bad frame handling
+ state->prev_bf = 0;
+ state->prev_pdf = 0;
+ state->state = 0;
+
+ state->T0_lagBuff = 40;
+ state->inBackgroundNoise = 0;
+ state->voicedHangover = 0;
+ if (mode != MRDTX) {
+ for (i=0;i<9;i++)
+ state->excEnergyHist[i] = 0;
+ }
+
+ for (i = 0; i < 9; i++)
+ state->ltpGainHistory[i] = 0;
+
+ Cb_gain_average_reset(state->Cb_gain_averState);
+ if (mode != MRDTX)
+ lsp_avg_reset(state->lsp_avg_st);
+ D_plsf_reset(state->lsfState);
+ ec_gain_pitch_reset(state->ec_gain_p_st);
+ ec_gain_code_reset(state->ec_gain_c_st);
+
+ if (mode != MRDTX)
+ gc_pred_reset(state->pred_state);
+
+ Bgn_scd_reset(state->background_state);
+ state->nodataSeed = 21845;
+ ph_disp_reset(state->ph_disp_st);
+ if (mode != MRDTX)
+ dtx_dec_reset(state->dtxDecoderState);
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Decoder_amr_reset(Decoder_amrState *state, enum Mode mode)
+{
+ Word16 i;
+
+ if (state == (Decoder_amrState *) NULL)
+ {
+ /* fprint(stderr, "Decoder_amr_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ /* Initialize static pointer */
+ state->exc = state->old_exc + PIT_MAX + L_INTERPOL;
+
+ /* Static vectors to zero */
+ memset(state->old_exc, 0, sizeof(Word16)*(PIT_MAX + L_INTERPOL));
+
+ if (mode != MRDTX)
+ {
+ memset(state->mem_syn, 0, sizeof(Word16)*M);
+ }
+ /* initialize pitch sharpening */
+ state->sharp = SHARPMIN;
+ state->old_T0 = 40;
+
+ /* Initialize overflow Flag */
+
+ state->overflow = 0;
+
+ /* Initialize state->lsp_old [] */
+
+ if (mode != MRDTX)
+ {
+ state->lsp_old[0] = 30000;
+ state->lsp_old[1] = 26000;
+ state->lsp_old[2] = 21000;
+ state->lsp_old[3] = 15000;
+ state->lsp_old[4] = 8000;
+ state->lsp_old[5] = 0;
+ state->lsp_old[6] = -8000;
+ state->lsp_old[7] = -15000;
+ state->lsp_old[8] = -21000;
+ state->lsp_old[9] = -26000;
+ }
+
+ /* Initialize memories of bad frame handling */
+ state->prev_bf = 0;
+ state->prev_pdf = 0;
+ state->state = 0;
+
+ state->T0_lagBuff = 40;
+ state->inBackgroundNoise = 0;
+ state->voicedHangover = 0;
+ if (mode != MRDTX)
+ {
+ for (i = 0; i < EXC_ENERGY_HIST_LEN; i++)
+ {
+ state->excEnergyHist[i] = 0;
+ }
+ }
+
+ for (i = 0; i < LTP_GAIN_HISTORY_LEN; i++)
+ {
+ state->ltpGainHistory[i] = 0;
+ }
+
+ Cb_gain_average_reset(&(state->Cb_gain_averState));
+ if (mode != MRDTX)
+ {
+ lsp_avg_reset(&(state->lsp_avg_st));
+ }
+ D_plsf_reset(&(state->lsfState));
+ ec_gain_pitch_reset(&(state->ec_gain_p_st));
+ ec_gain_code_reset(&(state->ec_gain_c_st));
+
+ if (mode != MRDTX)
+ {
+ gc_pred_reset(&(state->pred_state));
+ }
+
+ Bgn_scd_reset(&(state->background_state));
+ state->nodataSeed = 21845;
+ ph_disp_reset(&(state->ph_disp_st));
+ if (mode != MRDTX)
+ {
+ dtx_dec_reset(&(state->dtxDecoderState));
+ }
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Decoder_amr
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type Decoder_amrState
+ mode = codec mode (enum Mode)
+ parm = buffer of synthesis parameters (Word16)
+ frame_type = received frame type (enum RXFrameType)
+ synth = buffer containing synthetic speech (Word16)
+ A_t = buffer containing decoded LP filter in 4 subframes (Word16)
+
+ Outputs:
+ structure pointed to by st contains the newly calculated decoder
+ parameters
+ synth buffer contains the decoded speech samples
+ A_t buffer contains the decoded LP filter parameters
+
+ Returns:
+ return_value = 0 (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs the decoding of one speech frame for a given codec
+ mode.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dec_amr.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Decoder_amr (
+ Decoder_amrState *st, // i/o : State variables
+ enum Mode mode, // i : AMR mode
+ Word16 parm[], // i : vector of synthesis parameters
+ (PRM_SIZE)
+ enum RXFrameType frame_type, // i : received frame type
+ Word16 synth[], // o : synthesis speech (L_FRAME)
+ Word16 A_t[] // o : decoded LP filter in 4 subframes
+ (AZ_SIZE)
+)
+{
+ // LPC coefficients
+
+ Word16 *Az; // Pointer on A_t
+
+ // LSPs
+
+ Word16 lsp_new[M];
+ Word16 lsp_mid[M];
+
+ // LSFs
+
+ Word16 prev_lsf[M];
+ Word16 lsf_i[M];
+
+ // Algebraic codevector
+
+ Word16 code[L_SUBFR];
+
+ // excitation
+
+ Word16 excp[L_SUBFR];
+ Word16 exc_enhanced[L_SUBFR];
+
+ // Scalars
+
+ Word16 i, i_subfr;
+ Word16 T0, T0_frac, index, index_mr475 = 0;
+ Word16 gain_pit, gain_code, gain_code_mix, pit_sharp, pit_flag, pitch_fac;
+ Word16 t0_min, t0_max;
+ Word16 delta_frc_low, delta_frc_range;
+ Word16 tmp_shift;
+ Word16 temp;
+ Word32 L_temp;
+ Word16 flag4;
+ Word16 carefulFlag;
+ Word16 excEnergy;
+ Word16 subfrNr;
+ Word16 evenSubfr = 0;
+
+ Word16 bfi = 0; // bad frame indication flag
+ Word16 pdfi = 0; // potential degraded bad frame flag
+
+ enum DTXStateType newDTXState; // SPEECH , DTX, DTX_MUTE
+
+ // find the new DTX state SPEECH OR DTX
+ newDTXState = rx_dtx_handler(st->dtxDecoderState, frame_type);
+
+ // DTX actions
+ if (sub(newDTXState, SPEECH) != 0 )
+ {
+ Decoder_amr_reset (st, MRDTX);
+
+ dtx_dec(st->dtxDecoderState,
+ st->mem_syn,
+ st->lsfState,
+ st->pred_state,
+ st->Cb_gain_averState,
+ newDTXState,
+ mode,
+ parm, synth, A_t);
+ // update average lsp
+
+ Lsf_lsp(st->lsfState->past_lsf_q, st->lsp_old, M);
+ lsp_avg(st->lsp_avg_st, st->lsfState->past_lsf_q);
+ goto the_end;
+ }
+
+ // SPEECH action state machine
+ if ((sub(frame_type, RX_SPEECH_BAD) == 0) ||
+ (sub(frame_type, RX_NO_DATA) == 0) ||
+ (sub(frame_type, RX_ONSET) == 0))
+ {
+ bfi = 1;
+ if ((sub(frame_type, RX_NO_DATA) == 0) ||
+ (sub(frame_type, RX_ONSET) == 0))
+ {
+ build_CN_param(&st->nodataSeed,
+ prmno[mode],
+ bitno[mode],
+ parm);
+ }
+ }
+ else if (sub(frame_type, RX_SPEECH_DEGRADED) == 0)
+ {
+ pdfi = 1;
+ }
+
+ if (bfi != 0)
+ {
+ st->state = add (st->state, 1);
+ }
+ else if (sub (st->state, 6) == 0)
+
+ {
+ st->state = 5;
+ }
+ else
+ {
+ st->state = 0;
+ }
+
+ if (sub (st->state, 6) > 0)
+ {
+ st->state = 6;
+ }
+
+ // If this frame is the first speech frame after CNI period,
+ // set the BFH state machine to an appropriate state depending
+ // on whether there was DTX muting before start of speech or not
+ // If there was DTX muting, the first speech frame is muted.
+ // If there was no DTX muting, the first speech frame is not
+ // muted. The BFH state machine starts from state 5, however, to
+ // keep the audible noise resulting from a SID frame which is
+ // erroneously interpreted as a good speech frame as small as
+ // possible (the decoder output in this case is quickly muted)
+
+ if (sub(st->dtxDecoderState->dtxGlobalState, DTX) == 0)
+ {
+ st->state = 5;
+ st->prev_bf = 0;
+ }
+ else if (sub(st->dtxDecoderState->dtxGlobalState, DTX_MUTE) == 0)
+ {
+ st->state = 5;
+ st->prev_bf = 1;
+ }
+
+ // save old LSFs for CB gain smoothing
+ Copy (st->lsfState->past_lsf_q, prev_lsf, M);
+
+ // decode LSF parameters and generate interpolated lpc coefficients
+ for the 4 subframes
+ if (sub (mode, MR122) != 0)
+ {
+ D_plsf_3(st->lsfState, mode, bfi, parm, lsp_new);
+
+ // Advance synthesis parameters pointer
+ parm += 3;
+
+ Int_lpc_1to3(st->lsp_old, lsp_new, A_t);
+ }
+ else
+ {
+ D_plsf_5 (st->lsfState, bfi, parm, lsp_mid, lsp_new);
+
+ // Advance synthesis parameters pointer
+ parm += 5;
+
+ Int_lpc_1and3 (st->lsp_old, lsp_mid, lsp_new, A_t);
+ }
+
+ // update the LSPs for the next frame
+ for (i = 0; i < M; i++)
+ {
+ st->lsp_old[i] = lsp_new[i];
+ }
+
+ *------------------------------------------------------------------------*
+ * Loop for every subframe in the analysis frame *
+ *------------------------------------------------------------------------*
+ * The subframe size is L_SUBFR and the loop is repeated L_FRAME/L_SUBFR *
+ * times *
+ * - decode the pitch delay *
+ * - decode algebraic code *
+ * - decode pitch and codebook gains *
+ * - find the excitation and compute synthesis speech *
+ *------------------------------------------------------------------------*
+
+ // pointer to interpolated LPC parameters
+ Az = A_t;
+
+ evenSubfr = 0;
+ subfrNr = -1;
+ for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
+ {
+ subfrNr = add(subfrNr, 1);
+ evenSubfr = sub(1, evenSubfr);
+
+ // flag for first and 3th subframe
+ pit_flag = i_subfr;
+
+ if (sub (i_subfr, L_FRAME_BY2) == 0)
+ {
+ if (sub(mode, MR475) != 0 && sub(mode, MR515) != 0)
+ {
+ pit_flag = 0;
+ }
+ }
+
+ // pitch index
+ index = *parm++;
+
+ *-------------------------------------------------------*
+ * - decode pitch lag and find adaptive codebook vector. *
+ *-------------------------------------------------------*
+
+ if (sub(mode, MR122) != 0)
+ {
+ // flag4 indicates encoding with 4 bit resolution;
+ // this is needed for mode MR475, MR515, MR59 and MR67
+
+ flag4 = 0;
+ if ((sub (mode, MR475) == 0) ||
+ (sub (mode, MR515) == 0) ||
+ (sub (mode, MR59) == 0) ||
+ (sub (mode, MR67) == 0) ) {
+ flag4 = 1;
+ }
+
+ *-------------------------------------------------------*
+ * - get ranges for the t0_min and t0_max *
+ * - only needed in delta decoding *
+ *-------------------------------------------------------*
+
+ delta_frc_low = 5;
+ delta_frc_range = 9;
+
+ if ( sub(mode, MR795) == 0 )
+ {
+ delta_frc_low = 10;
+ delta_frc_range = 19;
+ }
+
+ t0_min = sub(st->old_T0, delta_frc_low);
+ if (sub(t0_min, PIT_MIN) < 0)
+ {
+ t0_min = PIT_MIN;
+ }
+ t0_max = add(t0_min, delta_frc_range);
+ if (sub(t0_max, PIT_MAX) > 0)
+ {
+ t0_max = PIT_MAX;
+ t0_min = sub(t0_max, delta_frc_range);
+ }
+
+ Dec_lag3 (index, t0_min, t0_max, pit_flag, st->old_T0,
+ &T0, &T0_frac, flag4);
+
+ st->T0_lagBuff = T0;
+
+ if (bfi != 0)
+ {
+ if (sub (st->old_T0, PIT_MAX) < 0)
+ { // Graceful pitch
+ st->old_T0 = add(st->old_T0, 1); // degradation
+ }
+ T0 = st->old_T0;
+ T0_frac = 0;
+
+ if ( st->inBackgroundNoise != 0 &&
+ sub(st->voicedHangover, 4) > 0 &&
+ ((sub(mode, MR475) == 0 ) ||
+ (sub(mode, MR515) == 0 ) ||
+ (sub(mode, MR59) == 0) )
+ )
+ {
+ T0 = st->T0_lagBuff;
+ }
+ }
+
+ Pred_lt_3or6 (st->exc, T0, T0_frac, L_SUBFR, 1);
+ }
+ else
+ {
+ Dec_lag6 (index, PIT_MIN_MR122,
+ PIT_MAX, pit_flag, &T0, &T0_frac);
+
+ if ( bfi == 0 && (pit_flag == 0 || sub (index, 61) < 0))
+ {
+ }
+ else
+ {
+ st->T0_lagBuff = T0;
+ T0 = st->old_T0;
+ T0_frac = 0;
+ }
+
+ Pred_lt_3or6 (st->exc, T0, T0_frac, L_SUBFR, 0);
+ }
+
+ *-------------------------------------------------------*
+ * - (MR122 only: Decode pitch gain.) *
+ * - Decode innovative codebook. *
+ * - set pitch sharpening factor *
+ *-------------------------------------------------------*
+
+ if (sub (mode, MR475) == 0 || sub (mode, MR515) == 0)
+ { // MR475, MR515
+ index = *parm++; // index of position
+ i = *parm++; // signs
+
+ decode_2i40_9bits (subfrNr, i, index, code);
+
+ pit_sharp = shl (st->sharp, 1);
+ }
+ else if (sub (mode, MR59) == 0)
+ { // MR59
+ index = *parm++; // index of position
+ i = *parm++; // signs
+
+ decode_2i40_11bits (i, index, code);
+
+ pit_sharp = shl (st->sharp, 1);
+ }
+ else if (sub (mode, MR67) == 0)
+ { // MR67
+ index = *parm++; // index of position
+ i = *parm++; // signs
+
+ decode_3i40_14bits (i, index, code);
+
+ pit_sharp = shl (st->sharp, 1);
+ }
+ else if (sub (mode, MR795) <= 0)
+ { // MR74, MR795
+ index = *parm++; // index of position
+ i = *parm++; // signs
+
+ decode_4i40_17bits (i, index, code);
+
+ pit_sharp = shl (st->sharp, 1);
+ }
+ else if (sub (mode, MR102) == 0)
+ { // MR102
+ dec_8i40_31bits (parm, code);
+ parm += 7;
+
+ pit_sharp = shl (st->sharp, 1);
+ }
+ else
+ { // MR122
+ index = *parm++;
+ if (bfi != 0)
+ {
+ ec_gain_pitch (st->ec_gain_p_st, st->state, &gain_pit);
+ }
+ else
+ {
+ gain_pit = d_gain_pitch (mode, index);
+ }
+ ec_gain_pitch_update (st->ec_gain_p_st, bfi, st->prev_bf,
+ &gain_pit);
+
+ dec_10i40_35bits (parm, code);
+ parm += 10;
+
+ // pit_sharp = gain_pit;
+ // if (pit_sharp > 1.0) pit_sharp = 1.0;
+
+ pit_sharp = shl (gain_pit, 1);
+ }
+
+ *-------------------------------------------------------*
+ * - Add the pitch contribution to code[]. *
+ *-------------------------------------------------------*
+ for (i = T0; i < L_SUBFR; i++)
+ {
+ temp = mult (code[i - T0], pit_sharp);
+ code[i] = add (code[i], temp);
+ }
+
+ *------------------------------------------------------------*
+ * - Decode codebook gain (MR122) or both pitch *
+ * gain and codebook gain (all others) *
+ * - Update pitch sharpening "sharp" with quantized gain_pit *
+ *------------------------------------------------------------*
+
+ if (sub (mode, MR475) == 0)
+ {
+ // read and decode pitch and code gain
+ if (evenSubfr != 0)
+ {
+ index_mr475 = *parm++; // index of gain(s)
+ }
+
+ if (bfi == 0)
+ {
+ Dec_gain(st->pred_state, mode, index_mr475, code,
+ evenSubfr, &gain_pit, &gain_code);
+ }
+ else
+ {
+ ec_gain_pitch (st->ec_gain_p_st, st->state, &gain_pit);
+ ec_gain_code (st->ec_gain_c_st, st->pred_state, st->state,
+ &gain_code);
+ }
+ ec_gain_pitch_update (st->ec_gain_p_st, bfi, st->prev_bf,
+ &gain_pit);
+ ec_gain_code_update (st->ec_gain_c_st, bfi, st->prev_bf,
+ &gain_code);
+
+ pit_sharp = gain_pit;
+ if (sub (pit_sharp, SHARPMAX) > 0)
+ {
+ pit_sharp = SHARPMAX;
+ }
+
+ }
+ else if ((sub (mode, MR74) <= 0) ||
+ (sub (mode, MR102) == 0))
+ {
+ // read and decode pitch and code gain
+ index = *parm++; // index of gain(s)
+
+ if (bfi == 0)
+ {
+ Dec_gain(st->pred_state, mode, index, code,
+ evenSubfr, &gain_pit, &gain_code);
+ }
+ else
+ {
+ ec_gain_pitch (st->ec_gain_p_st, st->state, &gain_pit);
+ ec_gain_code (st->ec_gain_c_st, st->pred_state, st->state,
+ &gain_code);
+ }
+ ec_gain_pitch_update (st->ec_gain_p_st, bfi, st->prev_bf,
+ &gain_pit);
+ ec_gain_code_update (st->ec_gain_c_st, bfi, st->prev_bf,
+ &gain_code);
+
+ pit_sharp = gain_pit;
+ if (sub (pit_sharp, SHARPMAX) > 0)
+ {
+ pit_sharp = SHARPMAX;
+ }
+
+ if (sub (mode, MR102) == 0)
+ {
+ if (sub (st->old_T0, add(L_SUBFR, 5)) > 0)
+ {
+ pit_sharp = shr(pit_sharp, 2);
+ }
+ }
+ }
+ else
+ {
+ // read and decode pitch gain
+ index = *parm++; // index of gain(s)
+
+ if (sub (mode, MR795) == 0)
+ {
+ // decode pitch gain
+ if (bfi != 0)
+ {
+ ec_gain_pitch (st->ec_gain_p_st, st->state, &gain_pit);
+ }
+ else
+ {
+ gain_pit = d_gain_pitch (mode, index);
+ }
+ ec_gain_pitch_update (st->ec_gain_p_st, bfi, st->prev_bf,
+ &gain_pit);
+
+ // read and decode code gain
+ index = *parm++;
+ if (bfi == 0)
+ {
+ d_gain_code (st->pred_state, mode, index, code, &gain_code);
+ }
+ else
+ {
+ ec_gain_code (st->ec_gain_c_st, st->pred_state, st->state,
+ &gain_code);
+ }
+ ec_gain_code_update (st->ec_gain_c_st, bfi, st->prev_bf,
+ &gain_code);
+
+ pit_sharp = gain_pit;
+ if (sub (pit_sharp, SHARPMAX) > 0)
+ {
+ pit_sharp = SHARPMAX;
+ }
+ }
+ else
+ { // MR122
+ if (bfi == 0)
+ {
+ d_gain_code (st->pred_state, mode, index, code, &gain_code);
+ }
+ else
+ {
+ ec_gain_code (st->ec_gain_c_st, st->pred_state, st->state,
+ &gain_code);
+ }
+ ec_gain_code_update (st->ec_gain_c_st, bfi, st->prev_bf,
+ &gain_code);
+
+ pit_sharp = gain_pit;
+ }
+ }
+
+ // store pitch sharpening for next subframe
+ // (for modes which use the previous pitch gain for
+ // pitch sharpening in the search phase)
+ // do not update sharpening in even subframes for MR475
+ if (sub(mode, MR475) != 0 || evenSubfr == 0)
+ {
+ st->sharp = gain_pit;
+ if (sub (st->sharp, SHARPMAX) > 0)
+ {
+ st->sharp = SHARPMAX;
+ }
+ }
+
+ pit_sharp = shl (pit_sharp, 1);
+ if (sub (pit_sharp, 16384) > 0)
+ {
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ temp = mult (st->exc[i], pit_sharp);
+ L_temp = L_mult (temp, gain_pit);
+ if (sub(mode, MR122)==0)
+ {
+ L_temp = L_shr (L_temp, 1);
+ }
+ excp[i] = pv_round (L_temp);
+ }
+ }
+
+ *-------------------------------------------------------*
+ * - Store list of LTP gains needed in the source *
+ * characteristic detector (SCD) *
+ *-------------------------------------------------------*
+ if ( bfi == 0 )
+ {
+ for (i = 0; i < 8; i++)
+ {
+ st->ltpGainHistory[i] = st->ltpGainHistory[i+1];
+ }
+ st->ltpGainHistory[8] = gain_pit;
+ }
+
+ *-------------------------------------------------------*
+ * - Limit gain_pit if in background noise and BFI *
+ * for MR475, MR515, MR59 *
+ *-------------------------------------------------------*
+
+ if ( (st->prev_bf != 0 || bfi != 0) && st->inBackgroundNoise != 0 &&
+ ((sub(mode, MR475) == 0) ||
+ (sub(mode, MR515) == 0) ||
+ (sub(mode, MR59) == 0))
+ )
+ {
+ if ( sub (gain_pit, 12288) > 0) // if (gain_pit > 0.75) in Q14
+ gain_pit = add( shr( sub(gain_pit, 12288), 1 ), 12288 );
+ // gain_pit = (gain_pit-0.75)/2.0 + 0.75;
+
+ if ( sub (gain_pit, 14745) > 0) // if (gain_pit > 0.90) in Q14
+ {
+ gain_pit = 14745;
+ }
+ }
+
+ *-------------------------------------------------------*
+ * Calculate CB mixed gain *
+ *-------------------------------------------------------*
+ Int_lsf(prev_lsf, st->lsfState->past_lsf_q, i_subfr, lsf_i);
+ gain_code_mix = Cb_gain_average(
+ st->Cb_gain_averState, mode, gain_code,
+ lsf_i, st->lsp_avg_st->lsp_meanSave, bfi,
+ st->prev_bf, pdfi, st->prev_pdf,
+ st->inBackgroundNoise, st->voicedHangover);
+
+ // make sure that MR74, MR795, MR122 have original code_gain
+ if ((sub(mode, MR67) > 0) && (sub(mode, MR102) != 0) )
+ // MR74, MR795, MR122
+ {
+ gain_code_mix = gain_code;
+ }
+
+ *-------------------------------------------------------*
+ * - Find the total excitation. *
+ * - Find synthesis speech corresponding to st->exc[]. *
+ *-------------------------------------------------------*
+ if (sub(mode, MR102) <= 0) // MR475, MR515, MR59, MR67, MR74, MR795, MR102
+ {
+ pitch_fac = gain_pit;
+ tmp_shift = 1;
+ }
+ else // MR122
+ {
+ pitch_fac = shr (gain_pit, 1);
+ tmp_shift = 2;
+ }
+
+ // copy unscaled LTP excitation to exc_enhanced (used in phase
+ * dispersion below) and compute total excitation for LTP feedback
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ exc_enhanced[i] = st->exc[i];
+
+ // st->exc[i] = gain_pit*st->exc[i] + gain_code*code[i];
+ L_temp = L_mult (st->exc[i], pitch_fac);
+ // 12.2: Q0 * Q13
+ // 7.4: Q0 * Q14
+ L_temp = L_mac (L_temp, code[i], gain_code);
+ // 12.2: Q12 * Q1
+ // 7.4: Q13 * Q1
+ L_temp = L_shl (L_temp, tmp_shift); // Q16
+ st->exc[i] = pv_round (L_temp);
+ }
+
+ *-------------------------------------------------------*
+ * - Adaptive phase dispersion *
+ *-------------------------------------------------------*
+ ph_disp_release(st->ph_disp_st); // free phase dispersion adaption
+
+ if ( ((sub(mode, MR475) == 0) ||
+ (sub(mode, MR515) == 0) ||
+ (sub(mode, MR59) == 0)) &&
+ sub(st->voicedHangover, 3) > 0 &&
+ st->inBackgroundNoise != 0 &&
+ bfi != 0 )
+ {
+ ph_disp_lock(st->ph_disp_st); // Always Use full Phase Disp.
+ } // if error in bg noise
+
+ // apply phase dispersion to innovation (if enabled) and
+ compute total excitation for synthesis part
+ ph_disp(st->ph_disp_st, mode,
+ exc_enhanced, gain_code_mix, gain_pit, code,
+ pitch_fac, tmp_shift);
+
+ *-------------------------------------------------------*
+ * - The Excitation control module are active during BFI.*
+ * - Conceal drops in signal energy if in bg noise. *
+ *-------------------------------------------------------*
+
+ L_temp = 0;
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ L_temp = L_mac (L_temp, exc_enhanced[i], exc_enhanced[i] );
+ }
+
+ L_temp = L_shr (L_temp, 1); // excEnergy = sqrt(L_temp) in Q0
+ L_temp = sqrt_l_exp(L_temp, &temp); // function result
+ L_temp = L_shr(L_temp, add( shr(temp, 1), 15));
+ L_temp = L_shr(L_temp, 2); // To cope with 16-bit and
+ excEnergy = extract_l(L_temp); // scaling in ex_ctrl()
+
+ if ( ((sub (mode, MR475) == 0) ||
+ (sub (mode, MR515) == 0) ||
+ (sub (mode, MR59) == 0)) &&
+ sub(st->voicedHangover, 5) > 0 &&
+ st->inBackgroundNoise != 0 &&
+ sub(st->state, 4) < 0 &&
+ ( (pdfi != 0 && st->prev_pdf != 0) ||
+ bfi != 0 ||
+ st->prev_bf != 0) )
+ {
+ carefulFlag = 0;
+ if ( pdfi != 0 && bfi == 0 )
+ {
+ carefulFlag = 1;
+ }
+
+ Ex_ctrl(exc_enhanced,
+ excEnergy,
+ st->excEnergyHist,
+ st->voicedHangover,
+ st->prev_bf,
+ carefulFlag);
+ }
+
+ if ( st->inBackgroundNoise != 0 &&
+ ( bfi != 0 || st->prev_bf != 0 ) &&
+ sub(st->state, 4) < 0 )
+ {
+ ; // do nothing!
+ }
+ else
+ {
+ // Update energy history for all modes
+ for (i = 0; i < 8; i++)
+ {
+ st->excEnergyHist[i] = st->excEnergyHist[i+1];
+ }
+ st->excEnergyHist[8] = excEnergy;
+ }
+ *-------------------------------------------------------*
+ * Excitation control module end. *
+ *-------------------------------------------------------*
+
+ if (sub (pit_sharp, 16384) > 0)
+ {
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ excp[i] = add (excp[i], exc_enhanced[i]);
+ }
+ agc2 (exc_enhanced, excp, L_SUBFR);
+ Overflow = 0;
+ Syn_filt (Az, excp, &synth[i_subfr], L_SUBFR,
+ st->mem_syn, 0);
+ }
+ else
+ {
+ Overflow = 0;
+ Syn_filt (Az, exc_enhanced, &synth[i_subfr], L_SUBFR,
+ st->mem_syn, 0);
+ }
+
+ if (Overflow != 0) // Test for overflow
+ {
+ for (i = 0; i < PIT_MAX + L_INTERPOL + L_SUBFR; i++)
+ {
+ st->old_exc[i] = shr(st->old_exc[i], 2);
+ }
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ exc_enhanced[i] = shr(exc_enhanced[i], 2);
+ }
+ Syn_filt(Az, exc_enhanced, &synth[i_subfr], L_SUBFR, st->mem_syn, 1);
+ }
+ else
+ {
+ Copy(&synth[i_subfr+L_SUBFR-M], st->mem_syn, M);
+ }
+
+ *--------------------------------------------------*
+ * Update signal for next frame. *
+ * -> shift to the left by L_SUBFR st->exc[] *
+ *--------------------------------------------------*
+
+ Copy (&st->old_exc[L_SUBFR], &st->old_exc[0], PIT_MAX + L_INTERPOL);
+
+ // interpolated LPC parameters for next subframe
+ Az += MP1;
+
+ // store T0 for next subframe
+ st->old_T0 = T0;
+ }
+
+ *-------------------------------------------------------*
+ * Call the Source Characteristic Detector which updates *
+ * st->inBackgroundNoise and st->voicedHangover. *
+ *-------------------------------------------------------*
+
+ st->inBackgroundNoise = Bgn_scd(st->background_state,
+ &(st->ltpGainHistory[0]),
+ &(synth[0]),
+ &(st->voicedHangover) );
+
+ dtx_dec_activity_update(st->dtxDecoderState,
+ st->lsfState->past_lsf_q,
+ synth);
+
+ // store bfi for next subframe
+ st->prev_bf = bfi;
+ st->prev_pdf = pdfi;
+
+ *--------------------------------------------------*
+ * Calculate the LSF averages on the eight *
+ * previous frames *
+ *--------------------------------------------------*
+
+ lsp_avg(st->lsp_avg_st, st->lsfState->past_lsf_q);
+
+the_end:
+ st->dtxDecoderState->dtxGlobalState = newDTXState;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void Decoder_amr(
+ Decoder_amrState *st, /* i/o : State variables */
+ enum Mode mode, /* i : AMR mode */
+ Word16 parm[], /* i : vector of synthesis parameters
+ (PRM_SIZE) */
+ enum RXFrameType frame_type, /* i : received frame type */
+ Word16 synth[], /* o : synthesis speech (L_FRAME) */
+ Word16 A_t[] /* o : decoded LP filter in 4 subframes
+ (AZ_SIZE) */
+)
+{
+ /* LPC coefficients */
+
+ Word16 *Az; /* Pointer on A_t */
+
+ /* LSPs */
+
+ Word16 lsp_new[M];
+ Word16 lsp_mid[M];
+
+ /* LSFs */
+
+ Word16 prev_lsf[M];
+ Word16 lsf_i[M];
+
+ /* Algebraic codevector */
+
+ Word16 code[L_SUBFR];
+
+ /* excitation */
+
+ Word16 excp[L_SUBFR];
+ Word16 exc_enhanced[L_SUBFR];
+
+ /* Scalars */
+
+ Word16 i;
+ Word16 i_subfr;
+ Word16 T0;
+ Word16 T0_frac;
+ Word16 index;
+ Word16 index_mr475 = 0;
+ Word16 gain_pit;
+ Word16 gain_code;
+ Word16 gain_code_mix;
+ Word16 pit_sharp;
+ Word16 pit_flag;
+ Word16 pitch_fac;
+ Word16 t0_min;
+ Word16 t0_max;
+ Word16 delta_frc_low;
+ Word16 delta_frc_range;
+ Word16 tmp_shift;
+ Word16 temp;
+ Word32 L_temp;
+ Word16 flag4;
+ Word16 carefulFlag;
+ Word16 excEnergy;
+ Word16 subfrNr;
+ Word16 evenSubfr = 0;
+
+ Word16 bfi = 0; /* bad frame indication flag */
+ Word16 pdfi = 0; /* potential degraded bad frame flag */
+
+ enum DTXStateType newDTXState; /* SPEECH , DTX, DTX_MUTE */
+ Flag *pOverflow = &(st->overflow); /* Overflow flag */
+
+
+ /* find the new DTX state SPEECH OR DTX */
+ newDTXState = rx_dtx_handler(&(st->dtxDecoderState), frame_type, pOverflow);
+
+ /* DTX actions */
+
+ if (newDTXState != SPEECH)
+ {
+ Decoder_amr_reset(st, MRDTX);
+
+ dtx_dec(&(st->dtxDecoderState),
+ st->mem_syn,
+ &(st->lsfState),
+ &(st->pred_state),
+ &(st->Cb_gain_averState),
+ newDTXState,
+ mode,
+ parm, synth, A_t, pOverflow);
+
+ /* update average lsp */
+ Lsf_lsp(
+ st->lsfState.past_lsf_q,
+ st->lsp_old,
+ M,
+ pOverflow);
+
+ lsp_avg(
+ &(st->lsp_avg_st),
+ st->lsfState.past_lsf_q,
+ pOverflow);
+
+ goto the_end;
+ }
+
+ /* SPEECH action state machine */
+ if ((frame_type == RX_SPEECH_BAD) || (frame_type == RX_NO_DATA) ||
+ (frame_type == RX_ONSET))
+ {
+ bfi = 1;
+
+ if ((frame_type == RX_NO_DATA) || (frame_type == RX_ONSET))
+ {
+ build_CN_param(&st->nodataSeed,
+ prmno[mode],
+ bitno[mode],
+ parm,
+ pOverflow);
+ }
+ }
+ else if (frame_type == RX_SPEECH_DEGRADED)
+ {
+ pdfi = 1;
+ }
+
+ if (bfi != 0)
+ {
+ st->state += 1;
+ }
+ else if (st->state == 6)
+
+ {
+ st->state = 5;
+ }
+ else
+ {
+ st->state = 0;
+ }
+
+
+ if (st->state > 6)
+ {
+ st->state = 6;
+ }
+
+ /* If this frame is the first speech frame after CNI period, */
+ /* set the BFH state machine to an appropriate state depending */
+ /* on whether there was DTX muting before start of speech or not */
+ /* If there was DTX muting, the first speech frame is muted. */
+ /* If there was no DTX muting, the first speech frame is not */
+ /* muted. The BFH state machine starts from state 5, however, to */
+ /* keep the audible noise resulting from a SID frame which is */
+ /* erroneously interpreted as a good speech frame as small as */
+ /* possible (the decoder output in this case is quickly muted) */
+
+ if (st->dtxDecoderState.dtxGlobalState == DTX)
+ {
+ st->state = 5;
+ st->prev_bf = 0;
+ }
+ else if (st->dtxDecoderState.dtxGlobalState == DTX_MUTE)
+ {
+ st->state = 5;
+ st->prev_bf = 1;
+ }
+
+ /* save old LSFs for CB gain smoothing */
+ Copy(st->lsfState.past_lsf_q, prev_lsf, M);
+
+ /* decode LSF parameters and generate interpolated lpc coefficients
+ for the 4 subframes */
+
+ if (mode != MR122)
+ {
+ D_plsf_3(
+ &(st->lsfState),
+ mode,
+ bfi,
+ parm,
+ lsp_new,
+ pOverflow);
+
+ /* Advance synthesis parameters pointer */
+ parm += 3;
+
+ Int_lpc_1to3(
+ st->lsp_old,
+ lsp_new,
+ A_t,
+ pOverflow);
+ }
+ else
+ {
+ D_plsf_5(
+ &(st->lsfState),
+ bfi,
+ parm,
+ lsp_mid,
+ lsp_new,
+ pOverflow);
+
+ /* Advance synthesis parameters pointer */
+ parm += 5;
+
+ Int_lpc_1and3(
+ st->lsp_old,
+ lsp_mid,
+ lsp_new,
+ A_t,
+ pOverflow);
+ }
+
+ /* update the LSPs for the next frame */
+ for (i = 0; i < M; i++)
+ {
+ st->lsp_old[i] = lsp_new[i];
+ }
+
+ /*------------------------------------------------------------------------*
+ * Loop for every subframe in the analysis frame *
+ *------------------------------------------------------------------------*
+ * The subframe size is L_SUBFR and the loop is repeated L_FRAME/L_SUBFR *
+ * times *
+ * - decode the pitch delay *
+ * - decode algebraic code *
+ * - decode pitch and codebook gains *
+ * - find the excitation and compute synthesis speech *
+ *------------------------------------------------------------------------*/
+
+ /* pointer to interpolated LPC parameters */
+ Az = A_t;
+
+ evenSubfr = 0;
+ subfrNr = -1;
+ for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
+ {
+ subfrNr += 1;
+ evenSubfr = 1 - evenSubfr;
+
+ /* flag for first and 3th subframe */
+ pit_flag = i_subfr;
+
+
+ if (i_subfr == L_FRAME_BY2)
+ {
+ if ((mode != MR475) && (mode != MR515))
+ {
+ pit_flag = 0;
+ }
+ }
+
+ /* pitch index */
+ index = *parm++;
+
+ /*-------------------------------------------------------*
+ * - decode pitch lag and find adaptive codebook vector. *
+ *-------------------------------------------------------*/
+
+ if (mode != MR122)
+ {
+ /* flag4 indicates encoding with 4 bit resolution; */
+ /* this is needed for mode MR475, MR515, MR59 and MR67 */
+
+ flag4 = 0;
+
+ if ((mode == MR475) || (mode == MR515) || (mode == MR59) ||
+ (mode == MR67))
+ {
+ flag4 = 1;
+ }
+
+ /*-------------------------------------------------------*
+ * - get ranges for the t0_min and t0_max *
+ * - only needed in delta decoding *
+ *-------------------------------------------------------*/
+
+ delta_frc_low = 5;
+ delta_frc_range = 9;
+
+ if (mode == MR795)
+ {
+ delta_frc_low = 10;
+ delta_frc_range = 19;
+ }
+
+ t0_min = sub(st->old_T0, delta_frc_low, pOverflow);
+
+ if (t0_min < PIT_MIN)
+ {
+ t0_min = PIT_MIN;
+ }
+ t0_max = add(t0_min, delta_frc_range, pOverflow);
+
+ if (t0_max > PIT_MAX)
+ {
+ t0_max = PIT_MAX;
+ t0_min = t0_max - delta_frc_range;
+ }
+
+ Dec_lag3(index, t0_min, t0_max, pit_flag, st->old_T0,
+ &T0, &T0_frac, flag4, pOverflow);
+
+ st->T0_lagBuff = T0;
+
+ if (bfi != 0)
+ {
+ if (st->old_T0 < PIT_MAX)
+ { /* Graceful pitch */
+ st->old_T0 += 0; /* degradation */
+ }
+ T0 = st->old_T0;
+ T0_frac = 0;
+
+ if ((st->inBackgroundNoise != 0) && (st->voicedHangover > 4) &&
+ ((mode == MR475) || (mode == MR515) || (mode == MR59)))
+ {
+ T0 = st->T0_lagBuff;
+ }
+ }
+
+ Pred_lt_3or6(st->exc, T0, T0_frac, L_SUBFR, 1, pOverflow);
+ }
+ else
+ {
+ Dec_lag6(index, PIT_MIN_MR122,
+ PIT_MAX, pit_flag, &T0, &T0_frac, pOverflow);
+
+
+ if (!(bfi == 0 && (pit_flag == 0 || index < 61)))
+ {
+ st->T0_lagBuff = T0;
+ T0 = st->old_T0;
+ T0_frac = 0;
+ }
+
+ Pred_lt_3or6(st->exc, T0, T0_frac, L_SUBFR, 0, pOverflow);
+ }
+
+ /*-------------------------------------------------------*
+ * - (MR122 only: Decode pitch gain.) *
+ * - Decode innovative codebook. *
+ * - set pitch sharpening factor *
+ *-------------------------------------------------------*/
+ if ((mode == MR475) || (mode == MR515))
+ { /* MR475, MR515 */
+ index = *parm++; /* index of position */
+ i = *parm++; /* signs */
+
+ decode_2i40_9bits(subfrNr, i, index, code, pOverflow);
+
+ L_temp = (Word32)st->sharp << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (st->sharp > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ else if (mode == MR59)
+ { /* MR59 */
+ index = *parm++; /* index of position */
+ i = *parm++; /* signs */
+
+ decode_2i40_11bits(i, index, code);
+
+ L_temp = (Word32)st->sharp << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (st->sharp > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ else if (mode == MR67)
+ { /* MR67 */
+ index = *parm++; /* index of position */
+ i = *parm++; /* signs */
+
+ decode_3i40_14bits(i, index, code);
+
+ L_temp = (Word32)st->sharp << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (st->sharp > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ else if (mode <= MR795)
+ { /* MR74, MR795 */
+ index = *parm++; /* index of position */
+ i = *parm++; /* signs */
+
+ decode_4i40_17bits(i, index, code);
+
+ L_temp = (Word32)st->sharp << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (st->sharp > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ else if (mode == MR102)
+ { /* MR102 */
+ dec_8i40_31bits(parm, code, pOverflow);
+ parm += 7;
+
+ L_temp = (Word32)st->sharp << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (st->sharp > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ else
+ { /* MR122 */
+ index = *parm++;
+
+ if (bfi != 0)
+ {
+ ec_gain_pitch(
+ &(st->ec_gain_p_st),
+ st->state,
+ &gain_pit,
+ pOverflow);
+ }
+ else
+ {
+ gain_pit = d_gain_pitch(mode, index);
+ }
+ ec_gain_pitch_update(
+ &(st->ec_gain_p_st),
+ bfi,
+ st->prev_bf,
+ &gain_pit,
+ pOverflow);
+
+
+ dec_10i40_35bits(parm, code);
+ parm += 10;
+
+ /* pit_sharp = gain_pit; */
+ /* if (pit_sharp > 1.0) pit_sharp = 1.0; */
+
+ L_temp = (Word32)gain_pit << 1;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ pit_sharp = (gain_pit > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ pit_sharp = (Word16) L_temp;
+ }
+ }
+ /*-------------------------------------------------------*
+ * - Add the pitch contribution to code[]. *
+ *-------------------------------------------------------*/
+ for (i = T0; i < L_SUBFR; i++)
+ {
+ temp = mult(*(code + i - T0), pit_sharp, pOverflow);
+ *(code + i) = add(*(code + i), temp, pOverflow);
+
+ }
+
+ /*------------------------------------------------------------*
+ * - Decode codebook gain (MR122) or both pitch *
+ * gain and codebook gain (all others) *
+ * - Update pitch sharpening "sharp" with quantized gain_pit *
+ *------------------------------------------------------------*/
+ if (mode == MR475)
+ {
+ /* read and decode pitch and code gain */
+
+ if (evenSubfr != 0)
+ {
+ index_mr475 = *parm++; /* index of gain(s) */
+ }
+
+ if (bfi == 0)
+ {
+ Dec_gain(
+ &(st->pred_state),
+ mode,
+ index_mr475,
+ code,
+ evenSubfr,
+ &gain_pit,
+ &gain_code,
+ pOverflow);
+ }
+ else
+ {
+ ec_gain_pitch(
+ &(st->ec_gain_p_st),
+ st->state,
+ &gain_pit,
+ pOverflow);
+
+ ec_gain_code(
+ &(st->ec_gain_c_st),
+ &(st->pred_state),
+ st->state,
+ &gain_code,
+ pOverflow);
+ }
+ ec_gain_pitch_update(
+ &st->ec_gain_p_st,
+ bfi,
+ st->prev_bf,
+ &gain_pit,
+ pOverflow);
+
+ ec_gain_code_update(
+ &st->ec_gain_c_st,
+ bfi,
+ st->prev_bf,
+ &gain_code,
+ pOverflow);
+
+ pit_sharp = gain_pit;
+
+ if (pit_sharp > SHARPMAX)
+ {
+ pit_sharp = SHARPMAX;
+ }
+
+ }
+ else if ((mode <= MR74) || (mode == MR102))
+ {
+ /* read and decode pitch and code gain */
+ index = *parm++; /* index of gain(s) */
+
+ if (bfi == 0)
+ {
+ Dec_gain(
+ &(st->pred_state),
+ mode,
+ index,
+ code,
+ evenSubfr,
+ &gain_pit,
+ &gain_code,
+ pOverflow);
+ }
+ else
+ {
+ ec_gain_pitch(
+ &(st->ec_gain_p_st),
+ st->state,
+ &gain_pit,
+ pOverflow);
+
+ ec_gain_code(
+ &(st->ec_gain_c_st),
+ &(st->pred_state),
+ st->state,
+ &gain_code,
+ pOverflow);
+ }
+
+ ec_gain_pitch_update(
+ &(st->ec_gain_p_st),
+ bfi,
+ st->prev_bf,
+ &gain_pit,
+ pOverflow);
+
+ ec_gain_code_update(
+ &(st->ec_gain_c_st),
+ bfi,
+ st->prev_bf,
+ &gain_code,
+ pOverflow);
+
+ pit_sharp = gain_pit;
+
+ if (pit_sharp > SHARPMAX)
+ {
+ pit_sharp = SHARPMAX;
+ }
+
+ if (mode == MR102)
+ {
+ if (st->old_T0 > (L_SUBFR + 5))
+ {
+ if (pit_sharp < 0)
+ {
+ pit_sharp = ~((~pit_sharp) >> 2);
+ }
+ else
+ {
+ pit_sharp = pit_sharp >> 2;
+ }
+ }
+ }
+ }
+ else
+ {
+ /* read and decode pitch gain */
+ index = *parm++; /* index of gain(s) */
+
+ if (mode == MR795)
+ {
+ /* decode pitch gain */
+ if (bfi != 0)
+ {
+ ec_gain_pitch(
+ &(st->ec_gain_p_st),
+ st->state,
+ &gain_pit,
+ pOverflow);
+ }
+ else
+ {
+ gain_pit = d_gain_pitch(mode, index);
+ }
+ ec_gain_pitch_update(
+ &(st->ec_gain_p_st),
+ bfi,
+ st->prev_bf,
+ &gain_pit,
+ pOverflow);
+
+ /* read and decode code gain */
+ index = *parm++;
+
+ if (bfi == 0)
+ {
+ d_gain_code(
+ &(st->pred_state),
+ mode,
+ index,
+ code,
+ &gain_code,
+ pOverflow);
+ }
+ else
+ {
+ ec_gain_code(
+ &(st->ec_gain_c_st),
+ &(st->pred_state),
+ st->state,
+ &gain_code,
+ pOverflow);
+ }
+
+ ec_gain_code_update(
+ &(st->ec_gain_c_st),
+ bfi,
+ st->prev_bf,
+ &gain_code,
+ pOverflow);
+
+ pit_sharp = gain_pit;
+
+ if (pit_sharp > SHARPMAX)
+ {
+ pit_sharp = SHARPMAX;
+ }
+ }
+ else
+ { /* MR122 */
+
+ if (bfi == 0)
+ {
+ d_gain_code(
+ &(st->pred_state),
+ mode,
+ index,
+ code,
+ &gain_code,
+ pOverflow);
+ }
+ else
+ {
+ ec_gain_code(
+ &(st->ec_gain_c_st),
+ &(st->pred_state),
+ st->state,
+ &gain_code,
+ pOverflow);
+ }
+
+ ec_gain_code_update(
+ &(st->ec_gain_c_st),
+ bfi,
+ st->prev_bf,
+ &gain_code,
+ pOverflow);
+
+ pit_sharp = gain_pit;
+ }
+ }
+
+ /* store pitch sharpening for next subframe */
+ /* (for modes which use the previous pitch gain for */
+ /* pitch sharpening in the search phase) */
+ /* do not update sharpening in even subframes for MR475 */
+ if ((mode != MR475) || (evenSubfr == 0))
+ {
+ st->sharp = gain_pit;
+
+ if (st->sharp > SHARPMAX)
+ {
+ st->sharp = SHARPMAX;
+ }
+ }
+
+ pit_sharp = shl(pit_sharp, 1, pOverflow);
+
+ if (pit_sharp > 16384)
+ {
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ temp = mult(st->exc[i], pit_sharp, pOverflow);
+ L_temp = L_mult(temp, gain_pit, pOverflow);
+
+ if (mode == MR122)
+ {
+ if (L_temp < 0)
+ {
+ L_temp = ~((~L_temp) >> 1);
+ }
+ else
+ {
+ L_temp = L_temp >> 1;
+ }
+ }
+ *(excp + i) = pv_round(L_temp, pOverflow);
+ }
+ }
+
+ /*-------------------------------------------------------*
+ * - Store list of LTP gains needed in the source *
+ * characteristic detector (SCD) *
+ *-------------------------------------------------------*/
+
+ if (bfi == 0)
+ {
+ for (i = 0; i < 8; i++)
+ {
+ st->ltpGainHistory[i] = st->ltpGainHistory[i+1];
+ }
+ st->ltpGainHistory[8] = gain_pit;
+ }
+
+ /*-------------------------------------------------------*
+ * - Limit gain_pit if in background noise and BFI *
+ * for MR475, MR515, MR59 *
+ *-------------------------------------------------------*/
+
+
+ if ((st->prev_bf != 0 || bfi != 0) && st->inBackgroundNoise != 0 &&
+ ((mode == MR475) || (mode == MR515) || (mode == MR59)))
+ {
+
+ if (gain_pit > 12288) /* if (gain_pit > 0.75) in Q14*/
+ {
+ gain_pit = ((gain_pit - 12288) >> 1) + 12288;
+ /* gain_pit = (gain_pit-0.75)/2.0 + 0.75; */
+ }
+
+ if (gain_pit > 14745) /* if (gain_pit > 0.90) in Q14*/
+ {
+ gain_pit = 14745;
+ }
+ }
+
+ /*-------------------------------------------------------*
+ * Calculate CB mixed gain *
+ *-------------------------------------------------------*/
+ Int_lsf(
+ prev_lsf,
+ st->lsfState.past_lsf_q,
+ i_subfr,
+ lsf_i,
+ pOverflow);
+
+ gain_code_mix =
+ Cb_gain_average(
+ &(st->Cb_gain_averState),
+ mode,
+ gain_code,
+ lsf_i,
+ st->lsp_avg_st.lsp_meanSave,
+ bfi,
+ st->prev_bf,
+ pdfi,
+ st->prev_pdf,
+ st->inBackgroundNoise,
+ st->voicedHangover,
+ pOverflow);
+
+ /* make sure that MR74, MR795, MR122 have original code_gain*/
+ if ((mode > MR67) && (mode != MR102))
+ /* MR74, MR795, MR122 */
+ {
+ gain_code_mix = gain_code;
+ }
+
+ /*-------------------------------------------------------*
+ * - Find the total excitation. *
+ * - Find synthesis speech corresponding to st->exc[]. *
+ *-------------------------------------------------------*/
+ if (mode <= MR102) /* MR475, MR515, MR59, MR67, MR74, MR795, MR102*/
+ {
+ pitch_fac = gain_pit;
+ tmp_shift = 1;
+ }
+ else /* MR122 */
+ {
+ if (gain_pit < 0)
+ {
+ pitch_fac = ~((~gain_pit) >> 1);
+ }
+ else
+ {
+ pitch_fac = gain_pit >> 1;
+ }
+ tmp_shift = 2;
+ }
+
+ /* copy unscaled LTP excitation to exc_enhanced (used in phase
+ * dispersion below) and compute total excitation for LTP feedback
+ */
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ exc_enhanced[i] = st->exc[i];
+
+ /* st->exc[i] = gain_pit*st->exc[i] + gain_code*code[i]; */
+ L_temp = L_mult(st->exc[i], pitch_fac, pOverflow);
+ /* 12.2: Q0 * Q13 */
+ /* 7.4: Q0 * Q14 */
+ L_temp = L_mac(L_temp, code[i], gain_code, pOverflow);
+ /* 12.2: Q12 * Q1 */
+ /* 7.4: Q13 * Q1 */
+ L_temp = L_shl(L_temp, tmp_shift, pOverflow); /* Q16 */
+ st->exc[i] = pv_round(L_temp, pOverflow);
+ }
+
+ /*-------------------------------------------------------*
+ * - Adaptive phase dispersion *
+ *-------------------------------------------------------*/
+ ph_disp_release(&(st->ph_disp_st)); /* free phase dispersion adaption */
+
+
+ if (((mode == MR475) || (mode == MR515) || (mode == MR59)) &&
+ (st->voicedHangover > 3) && (st->inBackgroundNoise != 0) &&
+ (bfi != 0))
+ {
+ ph_disp_lock(&(st->ph_disp_st)); /* Always Use full Phase Disp. */
+ } /* if error in bg noise */
+
+ /* apply phase dispersion to innovation (if enabled) and
+ compute total excitation for synthesis part */
+ ph_disp(
+ &(st->ph_disp_st),
+ mode,
+ exc_enhanced,
+ gain_code_mix,
+ gain_pit,
+ code,
+ pitch_fac,
+ tmp_shift,
+ pOverflow);
+
+ /*-------------------------------------------------------*
+ * - The Excitation control module are active during BFI.*
+ * - Conceal drops in signal energy if in bg noise. *
+ *-------------------------------------------------------*/
+ L_temp = 0;
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ L_temp = L_mac(L_temp, *(exc_enhanced + i), *(exc_enhanced + i), pOverflow);
+ }
+
+ /* excEnergy = sqrt(L_temp) in Q0 */
+ if (L_temp < 0)
+ {
+ L_temp = ~((~L_temp) >> 1);
+ }
+ else
+ {
+ L_temp = L_temp >> 1;
+ }
+
+ L_temp = sqrt_l_exp(L_temp, &temp, pOverflow);
+ /* To cope with 16-bit and scaling in ex_ctrl() */
+ L_temp = L_shr(L_temp, (Word16)((temp >> 1) + 15), pOverflow);
+ if (L_temp < 0)
+ {
+ excEnergy = (Word16)(~((~L_temp) >> 2));
+ }
+ else
+ {
+ excEnergy = (Word16)(L_temp >> 2);
+ }
+
+ if (((mode == MR475) || (mode == MR515) || (mode == MR59)) &&
+ (st->voicedHangover > 5) && (st->inBackgroundNoise != 0) &&
+ (st->state < 4) &&
+ ((pdfi != 0 && st->prev_pdf != 0) || bfi != 0 || st->prev_bf != 0))
+ {
+ carefulFlag = 0;
+
+ if (pdfi != 0 && bfi == 0)
+ {
+ carefulFlag = 1;
+ }
+
+ Ex_ctrl(exc_enhanced,
+ excEnergy,
+ st->excEnergyHist,
+ st->voicedHangover,
+ st->prev_bf,
+ carefulFlag, pOverflow);
+ }
+
+ if (!((st->inBackgroundNoise != 0) && (bfi != 0 || st->prev_bf != 0) &&
+ (st->state < 4)))
+ {
+ /* Update energy history for all modes */
+ for (i = 0; i < 8; i++)
+ {
+ st->excEnergyHist[i] = st->excEnergyHist[i+1];
+ }
+ st->excEnergyHist[8] = excEnergy;
+ }
+ /*-------------------------------------------------------*
+ * Excitation control module end. *
+ *-------------------------------------------------------*/
+ if (pit_sharp > 16384)
+ {
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ *(excp + i) = add(*(excp + i), *(exc_enhanced + i), pOverflow);
+
+ }
+ agc2(exc_enhanced, excp, L_SUBFR, pOverflow);
+ *pOverflow = 0;
+ Syn_filt(Az, excp, &synth[i_subfr], L_SUBFR,
+ st->mem_syn, 0);
+ }
+ else
+ {
+ *pOverflow = 0;
+ Syn_filt(Az, exc_enhanced, &synth[i_subfr], L_SUBFR,
+ st->mem_syn, 0);
+ }
+
+ if (*pOverflow != 0) /* Test for overflow */
+ {
+ for (i = PIT_MAX + L_INTERPOL + L_SUBFR - 1; i >= 0; i--)
+ {
+ if (st->old_exc[i] < 0)
+ {
+ st->old_exc[i] = ~((~st->old_exc[i]) >> 2);
+ }
+ else
+ {
+ st->old_exc[i] = st->old_exc[i] >> 2;
+ }
+
+ }
+
+ for (i = L_SUBFR - 1; i >= 0; i--)
+ {
+ if (*(exc_enhanced + i) < 0)
+ {
+ *(exc_enhanced + i) = ~((~(*(exc_enhanced + i))) >> 2);
+ }
+ else
+ {
+ *(exc_enhanced + i) = *(exc_enhanced + i) >> 2;
+ }
+ }
+ Syn_filt(Az, exc_enhanced, &synth[i_subfr], L_SUBFR, st->mem_syn, 1);
+ }
+ else
+ {
+ Copy(&synth[i_subfr+L_SUBFR-M], st->mem_syn, M);
+ }
+
+ /*--------------------------------------------------*
+ * Update signal for next frame. *
+ * -> shift to the left by L_SUBFR st->exc[] *
+ *--------------------------------------------------*/
+
+ Copy(&st->old_exc[L_SUBFR], &st->old_exc[0], PIT_MAX + L_INTERPOL);
+
+ /* interpolated LPC parameters for next subframe */
+ Az += MP1;
+
+ /* store T0 for next subframe */
+ st->old_T0 = T0;
+ }
+
+ /*-------------------------------------------------------*
+ * Call the Source Characteristic Detector which updates *
+ * st->inBackgroundNoise and st->voicedHangover. *
+ *-------------------------------------------------------*/
+
+ st->inBackgroundNoise =
+ Bgn_scd(
+ &(st->background_state),
+ &(st->ltpGainHistory[0]),
+ &(synth[0]),
+ &(st->voicedHangover),
+ pOverflow);
+
+ dtx_dec_activity_update(
+ &(st->dtxDecoderState),
+ st->lsfState.past_lsf_q,
+ synth,
+ pOverflow);
+
+ /* store bfi for next subframe */
+ st->prev_bf = bfi;
+ st->prev_pdf = pdfi;
+
+ /*--------------------------------------------------*
+ * Calculate the LSF averages on the eight *
+ * previous frames *
+ *--------------------------------------------------*/
+ lsp_avg(
+ &(st->lsp_avg_st),
+ st->lsfState.past_lsf_q,
+ pOverflow);
+
+the_end:
+ st->dtxDecoderState.dtxGlobalState = newDTXState;
+
+// return(0);
+}
diff --git a/media/codecs/amrnb/dec/src/dec_amr.h b/media/codecs/amrnb/dec/src/dec_amr.h
new file mode 100644
index 0000000..b04137d
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_amr.h
@@ -0,0 +1,206 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/dec_amr.h
+
+ Date: 02/06/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Update function prototype for Decoder_amr(). Include overflow
+ flag in Decode_amrState structure
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : dec_amr.h
+ Purpose : Speech decoder routine.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef DEC_AMR_H
+#define DEC_AMR_H "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "cnst.h"
+#include "mode.h"
+#include "dtx_dec.h"
+#include "d_plsf.h"
+#include "gc_pred.h"
+#include "ec_gains.h"
+#include "ph_disp.h"
+#include "c_g_aver.h"
+#include "bgnscd.h"
+#include "lsp_avg.h"
+#include "frame.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+#define EXC_ENERGY_HIST_LEN 9
+#define LTP_GAIN_HISTORY_LEN 9
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct Decoder_amrState
+ {
+ /* Excitation vector */
+ Word16 old_exc[L_SUBFR + PIT_MAX + L_INTERPOL];
+ Word16 *exc;
+
+ /* Lsp (Line spectral pairs) */
+ /* Word16 lsp[M]; */ /* Used by CN codec */
+ Word16 lsp_old[M];
+
+ /* Filter's memory */
+ Word16 mem_syn[M];
+
+ /* pitch sharpening */
+ Word16 sharp;
+ Word16 old_T0;
+
+ /* Memories for bad frame handling */
+ Word16 prev_bf;
+ Word16 prev_pdf;
+ Word16 state;
+ Word16 excEnergyHist[EXC_ENERGY_HIST_LEN];
+
+ /* Variable holding received ltpLag, used in background noise and BFI */
+ Word16 T0_lagBuff;
+
+ /* Variables for the source characteristic detector (SCD) */
+ Word16 inBackgroundNoise;
+ Word16 voicedHangover;
+ Word16 ltpGainHistory[LTP_GAIN_HISTORY_LEN];
+
+ Bgn_scdState background_state;
+ Word16 nodataSeed;
+
+ Cb_gain_averageState Cb_gain_averState;
+ lsp_avgState lsp_avg_st;
+
+ D_plsfState lsfState;
+ ec_gain_pitchState ec_gain_p_st;
+ ec_gain_codeState ec_gain_c_st;
+ gc_predState pred_state;
+ ph_dispState ph_disp_st;
+ dtx_decState dtxDecoderState;
+ Flag overflow;
+ } Decoder_amrState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ /*
+ * Function : Decoder_amr_init
+ * Purpose : Allocates initializes state memory
+ * Description : Stores pointer to filter status struct in *st. This
+ * pointer has to be passed to Decoder_amr in each call.
+ * Returns : 0 on success
+ */
+ Word16 Decoder_amr_init(Decoder_amrState *st);
+
+ /*
+ * Function : Decoder_amr_reset
+ * Purpose : Resets state memory
+ * Returns : 0 on success
+ */
+ Word16 Decoder_amr_reset(Decoder_amrState *st, enum Mode mode);
+
+ /*
+ * Function : Decoder_amr
+ * Purpose : Speech decoder routine.
+ * Returns : 0
+ */
+ void Decoder_amr(
+ Decoder_amrState *st, /* i/o : State variables */
+ enum Mode mode, /* i : AMR mode */
+ Word16 parm[], /* i : vector of synthesis parameters
+ (PRM_SIZE) */
+ enum RXFrameType frame_type, /* i : received frame type */
+ Word16 synth[], /* o : synthesis speech (L_FRAME) */
+ Word16 A_t[] /* o : decoded LP filter in 4 subframes
+ (AZ_SIZE) */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DEC_AMR_H_ */
+
+
+
diff --git a/media/codecs/amrnb/dec/src/dec_gain.cpp b/media/codecs/amrnb/dec/src/dec_gain.cpp
new file mode 100644
index 0000000..ceab48d
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_gain.cpp
@@ -0,0 +1,305 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/dec_gain.c
+ Funtions: dec_gain
+
+ Date: 01/31/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updating include file lists, and other things as per review
+ comments.
+
+ Description: Added fixes to the code as per review comments. Removed nested
+ function calls and declared temp2 as a variable.
+
+ Description: A Word32 was being stored improperly in a Word16.
+
+ Description: Removed qua_gain.tab and qgain475.tab from Include section and
+ added qua_gain_tbl.h and qgain475_tab.h to Include section.
+
+ Description: Changed round function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+ Description: Added casting to eliminate warnings
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "dec_gain.h"
+#include "typedef.h"
+#include "mode.h"
+#include "cnst.h"
+#include "pow2.h"
+#include "log2.h"
+#include "gc_pred.h"
+#include "basic_op.h"
+#include "qua_gain_tbl.h"
+#include "qgain475_tab.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dec_gain
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ pred_state = pointer to MA predictor state of type gc_predState
+ index = AMR mode of type enum Mode
+ code[] = pointer to innovative vector of type Word16
+ evenSubfr = Flag for even subframes of type Word16
+ pOverflow = pointer to overflow flag
+
+
+ Outputs:
+ pred_state = pointer to MA predictor state of type gc_predState
+ gain_pit = pointer to pitch gain of type Word16
+ gain_cod = pointer to code gain of type Word16
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ File : dec_gain.c
+ Purpose : Decode the pitch and codebook gains
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+
+
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+
+void Dec_gain(
+ gc_predState *pred_state, /* i/o: MA predictor state */
+ enum Mode mode, /* i : AMR mode */
+ Word16 index, /* i : index of quantization. */
+ Word16 code[], /* i : Innovative vector. */
+ Word16 evenSubfr, /* i : Flag for even subframes */
+ Word16 * gain_pit, /* o : Pitch gain. */
+ Word16 * gain_cod, /* o : Code gain. */
+ Flag * pOverflow
+)
+{
+ const Word16 *p;
+ Word16 frac;
+ Word16 gcode0;
+ Word16 exp;
+ Word16 qua_ener;
+ Word16 qua_ener_MR122;
+ Word16 g_code;
+ Word32 L_tmp;
+ Word16 temp1;
+ Word16 temp2;
+
+ /* Read the quantized gains (table depends on mode) */
+ index = shl(index, 2, pOverflow);
+
+ if (mode == MR102 || mode == MR74 || mode == MR67)
+ {
+ p = &table_gain_highrates[index];
+
+ *gain_pit = *p++;
+ g_code = *p++;
+ qua_ener_MR122 = *p++;
+ qua_ener = *p;
+ }
+ else
+ {
+ if (mode == MR475)
+ {
+ index += (1 ^ evenSubfr) << 1; /* evenSubfr is 0 or 1 */
+
+ if (index > (MR475_VQ_SIZE*4 - 2))
+ {
+ index = (MR475_VQ_SIZE * 4 - 2); /* avoid possible buffer overflow */
+ }
+
+ p = &table_gain_MR475[index];
+
+ *gain_pit = *p++;
+ g_code = *p++;
+
+ /*---------------------------------------------------------*
+ * calculate predictor update values (not stored in 4.75 *
+ * quantizer table to save space): *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
+ * *
+ * qua_ener = log2(g) *
+ * qua_ener_MR122 = 20*log10(g) *
+ *---------------------------------------------------------*/
+
+ /* Log2(x Q12) = log2(x) + 12 */
+ temp1 = (Word16) L_deposit_l(g_code);
+ Log2(temp1, &exp, &frac, pOverflow);
+ exp = sub(exp, 12, pOverflow);
+
+ temp1 = shr_r(frac, 5, pOverflow);
+ temp2 = shl(exp, 10, pOverflow);
+ qua_ener_MR122 = add(temp1, temp2, pOverflow);
+
+ /* 24660 Q12 ~= 6.0206 = 20*log10(2) */
+ L_tmp = Mpy_32_16(exp, frac, 24660, pOverflow);
+ L_tmp = L_shl(L_tmp, 13, pOverflow);
+ qua_ener = pv_round(L_tmp, pOverflow);
+ /* Q12 * Q0 = Q13 -> Q10 */
+ }
+ else
+ {
+ p = &table_gain_lowrates[index];
+
+ *gain_pit = *p++;
+ g_code = *p++;
+ qua_ener_MR122 = *p++;
+ qua_ener = *p;
+ }
+ }
+
+ /*-------------------------------------------------------------------*
+ * predict codebook gain *
+ * ~~~~~~~~~~~~~~~~~~~~~ *
+ * gc0 = Pow2(int(d)+frac(d)) *
+ * = 2^exp + 2^frac *
+ * *
+ * gcode0 (Q14) = 2^14*2^frac = gc0 * 2^(14-exp) *
+ *-------------------------------------------------------------------*/
+
+ gc_pred(pred_state, mode, code, &exp, &frac, NULL, NULL, pOverflow);
+
+ gcode0 = (Word16) Pow2(14, frac, pOverflow);
+
+ /*------------------------------------------------------------------*
+ * read quantized gains, update table of past quantized energies *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
+ * st->past_qua_en(Q10) = 20 * Log10(g_fac) / constant *
+ * = Log2(g_fac) *
+ * = qua_ener *
+ * constant = 20*Log10(2) *
+ *------------------------------------------------------------------*/
+
+ L_tmp = L_mult(g_code, gcode0, pOverflow);
+ temp1 = sub(10, exp, pOverflow);
+ L_tmp = L_shr(L_tmp, temp1, pOverflow);
+ *gain_cod = extract_h(L_tmp);
+
+ /* update table of past quantized energies */
+
+ gc_pred_update(pred_state, qua_ener_MR122, qua_ener);
+
+ return;
+}
+
+
+
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/dec_gain.h b/media/codecs/amrnb/dec/src/dec_gain.h
new file mode 100644
index 0000000..b9c6a8d
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_gain.h
@@ -0,0 +1,127 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/dec_gain.h
+
+ Date: 01/31/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : dec_gain.h
+ Purpose : Decode the pitch and codebook gains
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _DEC_GAIN_H_
+#define _DEC_GAIN_H_
+#define dec_gain_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "gc_pred.h"
+#include "mode.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+
+ /*
+ * FUNCTION: Dec_gain()
+ * PURPOSE: Decode the pitch and codebook gains
+ */
+ void Dec_gain(
+ gc_predState *pred_state, /* i/o: MA predictor state */
+ enum Mode mode, /* i : AMR mode */
+ Word16 index, /* i : index of quantization. */
+ Word16 code[], /* i : Innovative vector. */
+ Word16 evenSubfr, /* i : Flag for even subframes */
+ Word16 * gain_pit, /* o : Pitch gain. */
+ Word16 * gain_cod, /* o : Code gain. */
+ Flag * pOverflow
+ );
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DEC_GAIN_H_ */
+
+
+
diff --git a/media/codecs/amrnb/dec/src/dec_input_format_tab.cpp b/media/codecs/amrnb/dec/src/dec_input_format_tab.cpp
new file mode 100644
index 0000000..fffbbfd
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_input_format_tab.cpp
@@ -0,0 +1,233 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+ Pathname: .audio/gsm-amr/c/src/dec_input_format_tab.c
+
+ Date: 03/01/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Renamed BytesThisFrame to WmfBytesPerFrame, changed its type
+ from 'const short' to 'const int'. Added If2BytesPerFrame
+ table for IF2 input format. Updated copyright year and I/O
+ definition sections, and added reference document for IF2.
+
+ Description: Renamed WmfBytesPerFrame to WmfDecBytesPerFrame, and
+ If2BytesPerFrame to If2DecBytesPerFrame.
+
+ Description: Added #ifdef __cplusplus and removed "extern" from table
+ definition.
+
+ Description: Put "extern" back.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ None
+
+ Outputs:
+ None
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This file contains the tables of the number of data bytes per codec mode in
+ both WMF and IF2 input formats.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ [1] AMR Speech Codec Frame Structure, 3GPP TS 26.101 version 4.1.0 Release 4,
+ June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "amrdecode.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+ /* Table containing the number of core AMR data bytes for */
+ /* each codec mode for WMF input format(number excludes frame type byte) */
+ const Word16 WmfDecBytesPerFrame[16] =
+ {
+ 12, /* 4.75 */
+ 13, /* 5.15 */
+ 15, /* 5.90 */
+ 17, /* 6.70 */
+ 19, /* 7.40 */
+ 20, /* 7.95 */
+ 26, /* 10.2 */
+ 31, /* 12.2 */
+ 5, /* GsmAmr comfort noise */
+ 6, /* Gsm-Efr comfort noise */
+ 5, /* IS-641 comfort noise */
+ 5, /* Pdc-Efr comfort noise */
+ 0, /* future use */
+ 0, /* future use */
+ 0, /* future use */
+ 0 /* No transmission */
+ };
+
+ /* Table containing the number of core AMR data bytes for */
+ /* each codec mode for IF2 input format. */
+ const Word16 If2DecBytesPerFrame[16] =
+ {
+ 13, /* 4.75 */
+ 14, /* 5.15 */
+ 16, /* 5.90 */
+ 18, /* 6.70 */
+ 19, /* 7.40 */
+ 21, /* 7.95 */
+ 26, /* 10.2 */
+ 31, /* 12.2 */
+ 6, /* GsmAmr comfort noise */
+ 6, /* Gsm-Efr comfort noise */
+ 6, /* IS-641 comfort noise */
+ 6, /* Pdc-Efr comfort noise */
+ 0, /* future use */
+ 0, /* future use */
+ 0, /* future use */
+ 1 /* No transmission */
+ };
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL FUNCTION REFERENCES
+ ; Declare functions defined elsewhere and referenced in this module
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; Define all local variables
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; Function body here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; Return nothing or data or data pointer
+----------------------------------------------------------------------------*/
+
+
diff --git a/media/codecs/amrnb/dec/src/dec_lag3.cpp b/media/codecs/amrnb/dec/src/dec_lag3.cpp
new file mode 100644
index 0000000..70baaba
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_lag3.cpp
@@ -0,0 +1,407 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/dec_lag3.c
+ Functions: Dec_lag3
+
+ Date: 01/31/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description:
+ (1) Updated to accept new parameter, Flag *pOverflow.
+ (2) Placed file in the proper PV Software template.
+
+ Description:
+ (1) Removed "count.h" and "basic_op.h" and replaced with individual include
+ files (add.h, sub.h, etc.)
+
+ Description:
+ (1) Removed optimization -- mult(i, 3, pOverflow) is NOT the same as adding
+ i to itself 3 times. The reason is because the mult function does a
+ right shift by 15, which will obliterate smaller numbers.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+ ------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ index -- Word16 -- received pitch index
+ t0_min -- Word16 -- minimum of search range
+ t0_max -- Word16 -- maximum of search range
+ i_subfr -- Word16 -- subframe flag
+ T0_prev -- Word16 -- integer pitch delay of last subframe
+ used in 2nd and 4th subframes
+ flag4 -- Word16 -- flag for encoding with 4 bits
+
+ Outputs:
+
+ T0 -- Pointer to type Word16 -- integer part of pitch lag
+ T0_frac -- Pointer to type Word16 -- fractional part of pitch lag
+ pOverflow -- Pointer to type Flag -- Flag set when overflow occurs
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+
+ )
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ PURPOSE: Decoding of fractional pitch lag with 1/3 resolution.
+ Extract the integer and fraction parts of the pitch lag from
+ the received adaptive codebook index.
+
+ See "Enc_lag3.c" for more details about the encoding procedure.
+
+ The fractional lag in 1st and 3rd subframes is encoded with 8 bits
+ while that in 2nd and 4th subframes is relatively encoded with 4, 5
+ and 6 bits depending on the mode.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dec_lag3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "dec_lag3.h"
+#include "typedef.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+void Dec_lag3(Word16 index, /* i : received pitch index */
+ Word16 t0_min, /* i : minimum of search range */
+ Word16 t0_max, /* i : maximum of search range */
+ Word16 i_subfr, /* i : subframe flag */
+ Word16 T0_prev, /* i : integer pitch delay of last subframe
+ used in 2nd and 4th subframes */
+ Word16 * T0, /* o : integer part of pitch lag */
+ Word16 * T0_frac, /* o : fractional part of pitch lag */
+ Word16 flag4, /* i : flag for encoding with 4 bits */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+ )
+{
+ Word16 i;
+ Word16 tmp_lag;
+
+ if (i_subfr == 0) /* if 1st or 3rd subframe */
+ {
+
+ if (index < 197)
+ {
+
+ tmp_lag = index + 2;
+
+ tmp_lag =
+ mult(
+ tmp_lag,
+ 10923,
+ pOverflow);
+
+ i =
+ add(
+ tmp_lag,
+ 19,
+ pOverflow);
+
+ *T0 = i;
+
+ /* i = 3 * (*T0) */
+
+ i = add(i, i, pOverflow);
+ i = add(i, *T0, pOverflow);
+
+ tmp_lag =
+ sub(
+ index,
+ i,
+ pOverflow);
+
+ *T0_frac =
+ add(
+ tmp_lag,
+ 58,
+ pOverflow);
+ }
+ else
+ {
+ *T0 = index - 112;
+
+ *T0_frac = 0;
+ }
+
+ }
+ else
+ { /* 2nd or 4th subframe */
+
+ if (flag4 == 0)
+ {
+
+ /* 'normal' decoding: either with 5 or 6 bit resolution */
+
+ i =
+ add(
+ index,
+ 2,
+ pOverflow);
+
+ i =
+ mult(
+ i,
+ 10923,
+ pOverflow);
+
+ i =
+ sub(
+ i,
+ 1,
+ pOverflow);
+
+ *T0 =
+ add(
+ i,
+ t0_min,
+ pOverflow);
+
+ /* i = 3* (*T0) */
+ i = add(add(i, i, pOverflow), i, pOverflow);
+
+ tmp_lag =
+ sub(
+ index,
+ 2,
+ pOverflow);
+
+ *T0_frac =
+ sub(
+ tmp_lag,
+ i,
+ pOverflow);
+ }
+ else
+ {
+
+ /* decoding with 4 bit resolution */
+
+ tmp_lag = T0_prev;
+
+ i =
+ sub(
+ tmp_lag,
+ t0_min,
+ pOverflow);
+
+ if (i > 5)
+ {
+ tmp_lag =
+ add(
+ t0_min,
+ 5,
+ pOverflow);
+ }
+
+ i =
+ sub(
+ t0_max,
+ tmp_lag,
+ pOverflow);
+
+ if (i > 4)
+ {
+ tmp_lag =
+ sub(
+ t0_max,
+ 4,
+ pOverflow);
+ }
+
+ if (index < 4)
+ {
+ i =
+ sub(
+ tmp_lag,
+ 5,
+ pOverflow);
+
+ *T0 =
+ add(
+ i,
+ index,
+ pOverflow);
+
+ *T0_frac = 0;
+ }
+ else
+ {
+ /* 4 >= index < 12 */
+ if (index < 12)
+ {
+ i = index - 5;
+
+ i = mult(
+ i,
+ 10923,
+ pOverflow);
+
+ i--;
+
+ *T0 = add(
+ i,
+ tmp_lag,
+ pOverflow);
+
+ i = add(
+ add(
+ i,
+ i,
+ pOverflow),
+ i,
+ pOverflow);
+
+ tmp_lag = index - 9;
+
+ *T0_frac =
+ sub(
+ tmp_lag,
+ i,
+ pOverflow);
+ }
+ else
+ {
+ i = index - 12;
+
+ i =
+ add(
+ i,
+ tmp_lag,
+ pOverflow);
+
+ *T0 =
+ add(
+ i,
+ 1,
+ pOverflow);
+
+ *T0_frac = 0;
+ }
+ }
+
+ } /* end if (decoding with 4 bit resolution) */
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/dec_lag3.h b/media/codecs/amrnb/dec/src/dec_lag3.h
new file mode 100644
index 0000000..e758b92
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_lag3.h
@@ -0,0 +1,127 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/dec_lag3.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the dec_lag3.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef dec_lag3_h
+#define dec_lag3_h "$Id $"
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void Dec_lag3(Word16 index, /* i : received pitch index */
+ Word16 T0_min, /* i : minimum of search range */
+ Word16 T0_max, /* i : maximum of search range */
+ Word16 i_subfr, /* i : subframe flag */
+ Word16 T0_prev, /* i : integer pitch delay of last subframe
+ used in 2nd and 4th subframes */
+ Word16 * T0, /* o : integer part of pitch lag */
+ Word16 * T0_frac, /* o : fractional part of pitch lag */
+ Word16 flag4, /* i : flag for encoding with 4 bits */
+ Flag * pOverflow /* o : Flag set when overflow occurs */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DEC_LAG_3_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/dec_lag6.cpp b/media/codecs/amrnb/dec/src/dec_lag6.cpp
new file mode 100644
index 0000000..7dc7a8d
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_lag6.cpp
@@ -0,0 +1,337 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/dec_lag6.c
+ Functions: Dec_lag6
+
+ Date: 01/31/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description:
+ (1) Updated to accept new parameter, Flag *pOverflow.
+ (2) Placed file in the proper PV Software template.
+
+ Description:
+ (1) Removed "count.h" and "basic_op.h" and replaced with individual include
+ files (add.h, sub.h, etc.)
+
+ Description:
+ (1) Removed optimization -- mult(i, 3, pOverflow) is NOT the same as adding
+ i to itself 3 times. The reason is because the mult function does a
+ right shift by 15, which will obliterate smaller numbers.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+ ------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ index -- Word16 -- received pitch index
+ pit_min -- Word16 -- minimum pitch lag
+ pit_max -- Word16 -- maximum pitch lag
+ i_subfr -- Word16 -- subframe flag
+ T0 -- Pointer to type Word16 -- integer part of pitch lag
+
+ Outputs:
+
+ T0 -- Pointer to type Word16 -- integer part of pitch lag
+ T0_frac -- Pointer to type Word16 -- fractional part of pitch lag
+ pOverflow -- Pointer to type Flag -- Flag set when overflow occurs
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ PURPOSE: Decoding of fractional pitch lag with 1/6 resolution.
+ Extract the integer and fraction parts of the pitch lag from
+ the received adaptive codebook index.
+
+ See "Enc_lag6.c" for more details about the encoding procedure.
+
+ The fractional lag in 1st and 3rd subframes is encoded with 9 bits
+ while that in 2nd and 4th subframes is relatively encoded with 6 bits.
+ Note that in relative encoding only 61 values are used. If the
+ decoder receives 61, 62, or 63 as the relative pitch index, it means
+ that a transmission error occurred. In this case, the pitch lag from
+ previous subframe (actually from previous frame) is used.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dec_lag6.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ STACK USAGE: [stack count for this module] + [variable to represent
+ stack usage for each subroutine called]
+
+ where: [stack usage variable] = stack usage for [subroutine
+ name] (see [filename].ext)
+
+ DATA MEMORY USED: x words
+
+ PROGRAM MEMORY USED: x words
+
+ CLOCK CYCLES: [cycle count equation for this module] + [variable
+ used to represent cycle count for each subroutine
+ called]
+
+ where: [cycle count variable] = cycle count for [subroutine
+ name] (see [filename].ext)
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "dec_lag6.h"
+#include "typedef.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+void Dec_lag6(
+ Word16 index, /* input : received pitch index */
+ Word16 pit_min, /* input : minimum pitch lag */
+ Word16 pit_max, /* input : maximum pitch lag */
+ Word16 i_subfr, /* input : subframe flag */
+ Word16 *T0, /* in/out: integer part of pitch lag */
+ Word16 *T0_frac, /* output: fractional part of pitch lag */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word16 T0_min;
+ Word16 T0_max;
+ Word16 k;
+ Word16 w;
+
+ if (i_subfr == 0) /* if 1st or 3rd subframe */
+ {
+ if (index < 463)
+ {
+ /* T0 = (index+5)/6 + 17 */
+ i = index + 5;
+ i =
+ mult(
+ i,
+ 5462,
+ pOverflow);
+
+ i =
+ add(
+ i,
+ 17,
+ pOverflow);
+
+ *T0 = i;
+
+ /* i = 3* (*T0) */
+
+ i = add(i, i, pOverflow);
+ i = add(i, *T0, pOverflow);
+
+ /* *T0_frac = index - T0*6 + 105 */
+
+ i =
+ add(
+ i,
+ i,
+ pOverflow);
+
+ i =
+ sub(
+ index,
+ i,
+ pOverflow);
+
+ *T0_frac =
+ add(
+ i,
+ 105,
+ pOverflow);
+ }
+ else
+ {
+ *T0 =
+ sub(
+ index,
+ 368,
+ pOverflow);
+
+ *T0_frac = 0;
+ }
+ }
+ else /* second or fourth subframe */
+ {
+ /* find T0_min and T0_max for 2nd (or 4th) subframe */
+
+ T0_min =
+ sub(
+ *T0,
+ 5,
+ pOverflow);
+
+ if (T0_min < pit_min)
+ {
+ T0_min = pit_min;
+ }
+
+ T0_max =
+ add(
+ T0_min,
+ 9,
+ pOverflow);
+
+ if (T0_max > pit_max)
+ {
+ T0_max = pit_max;
+
+ T0_min =
+ sub(
+ T0_max,
+ 9,
+ pOverflow);
+ }
+
+ /* i = (index+5)/6 - 1 */
+ i =
+ add(
+ index,
+ 5,
+ pOverflow);
+
+ i =
+ mult(
+ i,
+ 5462,
+ pOverflow);
+
+ i =
+ sub(
+ i,
+ 1,
+ pOverflow);
+
+ *T0 =
+ add(
+ i,
+ T0_min,
+ pOverflow);
+
+ /* i = 3* (*T0) */
+
+ w = add(i, i, pOverflow);
+ i = add(i, w, pOverflow);
+
+ i =
+ add(
+ i,
+ i,
+ pOverflow);
+
+ k =
+ sub(
+ index,
+ 3,
+ pOverflow);
+
+ *T0_frac =
+ sub(
+ k,
+ i,
+ pOverflow);
+ }
+}
diff --git a/media/codecs/amrnb/dec/src/dec_lag6.h b/media/codecs/amrnb/dec/src/dec_lag6.h
new file mode 100644
index 0000000..7322bc8
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dec_lag6.h
@@ -0,0 +1,124 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/dec_lag6.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the dec_lag6.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef dec_lag6_h
+#define dec_lag6_h "$Id $"
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ void Dec_lag6(
+ Word16 index, /* input : received pitch index */
+ Word16 pit_min, /* input : minimum pitch lag */
+ Word16 pit_max, /* input : maximum pitch lag */
+ Word16 i_subfr, /* input : subframe flag */
+ Word16 *T0, /* in/out: integer part of pitch lag */
+ Word16 *T0_frac, /* output: fractional part of pitch lag */
+ Flag * pOverflow /* o : Flag set when overflow occurs */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DEC_LAG_6_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/dtx_dec.cpp b/media/codecs/amrnb/dec/src/dtx_dec.cpp
new file mode 100644
index 0000000..9d04373
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dtx_dec.cpp
@@ -0,0 +1,1956 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/dtx_dec.c
+ Functions:
+ dtx_dec_reset
+ dtx_dec
+ dtx_dec_activity_update
+ rx_dtx_handler
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ These modules decode the comfort noise when in DTX.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <string.h>
+
+#include "dtx_dec.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "copy.h"
+#include "set_zero.h"
+#include "mode.h"
+#include "log2.h"
+#include "lsp_az.h"
+#include "pow2.h"
+#include "a_refl.h"
+#include "b_cn_cod.h"
+#include "syn_filt.h"
+#include "lsp_lsf.h"
+#include "reorder.h"
+#include "lsp_tab.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define PN_INITIAL_SEED 0x70816958L /* Pseudo noise generator seed value */
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/***************************************************
+ * Scaling factors for the lsp variability operation *
+ ***************************************************/
+static const Word16 lsf_hist_mean_scale[M] =
+{
+ 20000,
+ 20000,
+ 20000,
+ 20000,
+ 20000,
+ 18000,
+ 16384,
+ 8192,
+ 0,
+ 0
+};
+
+/*************************************************
+ * level adjustment for different modes Q11 *
+ *************************************************/
+static const Word16 dtx_log_en_adjust[9] =
+{
+ -1023, /* MR475 */
+ -878, /* MR515 */
+ -732, /* MR59 */
+ -586, /* MR67 */
+ -440, /* MR74 */
+ -294, /* MR795 */
+ -148, /* MR102 */
+ 0, /* MR122 */
+ 0, /* MRDTX */
+};
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dtx_dec_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type dtx_decState
+
+ Outputs:
+ Structure pointed to by st is initialized to a set of initial values.
+
+ Returns:
+ return_value = 0 if memory was successfully initialized,
+ otherwise returns -1 (int)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Reset of state memory for dtx_dec.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dtx_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.3.0, December 12, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int dtx_dec_reset (dtx_decState *st)
+{
+ int i;
+
+ if (st == (dtx_decState *) NULL){
+ fprintf(stderr, "dtx_dec_reset: invalid parameter\n");
+ return -1;
+ }
+
+ st->since_last_sid = 0;
+ st->true_sid_period_inv = (1 << 13);
+
+ st->log_en = 3500;
+ st->old_log_en = 3500;
+ // low level noise for better performance in DTX handover cases
+
+ st->L_pn_seed_rx = PN_INITIAL_SEED;
+
+ // Initialize state->lsp [] and state->lsp_old []
+ Copy(lsp_init_data, &st->lsp[0], M);
+ Copy(lsp_init_data, &st->lsp_old[0], M);
+
+ st->lsf_hist_ptr = 0;
+ st->log_pg_mean = 0;
+ st->log_en_hist_ptr = 0;
+
+ // initialize decoder lsf history
+ Copy(mean_lsf, &st->lsf_hist[0], M);
+
+ for (i = 1; i < DTX_HIST_SIZE; i++)
+ {
+ Copy(&st->lsf_hist[0], &st->lsf_hist[M*i], M);
+ }
+ Set_zero(st->lsf_hist_mean, M*DTX_HIST_SIZE);
+
+ // initialize decoder log frame energy
+ for (i = 0; i < DTX_HIST_SIZE; i++)
+ {
+ st->log_en_hist[i] = st->log_en;
+ }
+
+ st->log_en_adjust = 0;
+
+ st->dtxHangoverCount = DTX_HANG_CONST;
+ st->decAnaElapsedCount = 32767;
+
+ st->sid_frame = 0;
+ st->valid_data = 0;
+ st->dtxHangoverAdded = 0;
+
+ st->dtxGlobalState = DTX;
+ st->data_updated = 0;
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 dtx_dec_reset(dtx_decState *st)
+{
+ Word16 i;
+
+ if (st == (dtx_decState *) NULL)
+ {
+ /* fprint(stderr, "dtx_dec_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ st->since_last_sid = 0;
+ st->true_sid_period_inv = (1 << 13);
+
+ st->log_en = 3500;
+ st->old_log_en = 3500;
+ /* low level noise for better performance in DTX handover cases*/
+
+ st->L_pn_seed_rx = PN_INITIAL_SEED;
+
+ /* Initialize state->lsp [] */
+ st->lsp[0] = 30000;
+ st->lsp[1] = 26000;
+ st->lsp[2] = 21000;
+ st->lsp[3] = 15000;
+ st->lsp[4] = 8000;
+ st->lsp[5] = 0;
+ st->lsp[6] = -8000;
+ st->lsp[7] = -15000;
+ st->lsp[8] = -21000;
+ st->lsp[9] = -26000;
+
+ /* Initialize state->lsp_old [] */
+ st->lsp_old[0] = 30000;
+ st->lsp_old[1] = 26000;
+ st->lsp_old[2] = 21000;
+ st->lsp_old[3] = 15000;
+ st->lsp_old[4] = 8000;
+ st->lsp_old[5] = 0;
+ st->lsp_old[6] = -8000;
+ st->lsp_old[7] = -15000;
+ st->lsp_old[8] = -21000;
+ st->lsp_old[9] = -26000;
+
+ st->lsf_hist_ptr = 0;
+ st->log_pg_mean = 0;
+ st->log_en_hist_ptr = 0;
+
+ /* initialize decoder lsf history */
+ st->lsf_hist[0] = 1384;
+ st->lsf_hist[1] = 2077;
+ st->lsf_hist[2] = 3420;
+ st->lsf_hist[3] = 5108;
+ st->lsf_hist[4] = 6742;
+ st->lsf_hist[5] = 8122;
+ st->lsf_hist[6] = 9863;
+ st->lsf_hist[7] = 11092;
+ st->lsf_hist[8] = 12714;
+ st->lsf_hist[9] = 13701;
+
+ for (i = 1; i < DTX_HIST_SIZE; i++)
+ {
+ Copy(&st->lsf_hist[0], &st->lsf_hist[M*i], M);
+ }
+ memset(st->lsf_hist_mean, 0, sizeof(Word16)*M*DTX_HIST_SIZE);
+
+ /* initialize decoder log frame energy */
+ for (i = 0; i < DTX_HIST_SIZE; i++)
+ {
+ st->log_en_hist[i] = st->log_en;
+ }
+
+ st->log_en_adjust = 0;
+
+ st->dtxHangoverCount = DTX_HANG_CONST;
+ st->decAnaElapsedCount = 32767;
+
+ st->sid_frame = 0;
+ st->valid_data = 0;
+ st->dtxHangoverAdded = 0;
+
+ st->dtxGlobalState = DTX;
+ st->data_updated = 0;
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dtx_dec
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type dtx_decState
+ mem_syn = AMR decoder state
+ lsfState = decoder lsf states
+ predState = prediction states
+ averState = CB gain average states
+ new_state = new DTX state
+ mode = AMR mode
+ parm = Vector of synthesis parameters
+
+ Outputs:
+ st points to an updated structure of type dtx_decState
+ mem_syn = AMR decoder state
+ lsfState = decoder lsf states
+ predState = prediction states
+ averState = CB gain average states
+ synth = synthesised speech
+ A_t = decoded LP filter in 4 subframes
+
+ Returns:
+ return_value = 0 (int)
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Decode comfort noise when in DTX.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dtx_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.3.0, December 12, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int dtx_dec(
+ dtx_decState *st, // i/o : State struct
+ Word16 mem_syn[], // i/o : AMR decoder state
+ D_plsfState* lsfState, // i/o : decoder lsf states
+ gc_predState* predState, // i/o : prediction states
+ Cb_gain_averageState* averState, // i/o : CB gain average states
+ enum DTXStateType new_state, // i : new DTX state
+ enum Mode mode, // i : AMR mode
+ Word16 parm[], // i : Vector of synthesis parameters
+ Word16 synth[], // o : synthesised speech
+ Word16 A_t[] // o : decoded LP filter in 4 subframes
+ )
+{
+ Word16 log_en_index;
+ Word16 i, j;
+ Word16 int_fac;
+ Word32 L_log_en_int;
+ Word16 lsp_int[M];
+ Word16 log_en_int_e;
+ Word16 log_en_int_m;
+ Word16 level;
+ Word16 acoeff[M + 1];
+ Word16 refl[M];
+ Word16 pred_err;
+ Word16 ex[L_SUBFR];
+ Word16 ma_pred_init;
+ Word16 log_pg_e, log_pg_m;
+ Word16 log_pg;
+ Flag negative;
+ Word16 lsf_mean;
+ Word32 L_lsf_mean;
+ Word16 lsf_variab_index;
+ Word16 lsf_variab_factor;
+ Word16 lsf_int[M];
+ Word16 lsf_int_variab[M];
+ Word16 lsp_int_variab[M];
+ Word16 acoeff_variab[M + 1];
+
+ Word16 lsf[M];
+ Word32 L_lsf[M];
+ Word16 ptr;
+ Word16 tmp_int_length;
+
+
+ // This function is called if synthesis state is not SPEECH
+ // the globally passed inputs to this function are
+ // st->sid_frame
+ // st->valid_data
+ // st->dtxHangoverAdded
+ // new_state (SPEECH, DTX, DTX_MUTE)
+
+ if ((st->dtxHangoverAdded != 0) &&
+ (st->sid_frame != 0))
+ {
+ // sid_first after dtx hangover period
+ // or sid_upd after dtxhangover
+
+ // set log_en_adjust to correct value
+ st->log_en_adjust = dtx_log_en_adjust[mode];
+
+ ptr = add(st->lsf_hist_ptr, M);
+ if (sub(ptr, 80) == 0)
+ {
+ ptr = 0;
+ }
+ Copy( &st->lsf_hist[st->lsf_hist_ptr],&st->lsf_hist[ptr],M);
+
+ ptr = add(st->log_en_hist_ptr,1);
+ if (sub(ptr, DTX_HIST_SIZE) == 0)
+ {
+ ptr = 0;
+ }
+ st->log_en_hist[ptr] = st->log_en_hist[st->log_en_hist_ptr]; // Q11
+
+ // compute mean log energy and lsp
+ // from decoded signal (SID_FIRST)
+ st->log_en = 0;
+ for (i = 0; i < M; i++)
+ {
+ L_lsf[i] = 0;
+ }
+
+ // average energy and lsp
+ for (i = 0; i < DTX_HIST_SIZE; i++)
+ {
+ st->log_en = add(st->log_en,
+ shr(st->log_en_hist[i],3));
+ for (j = 0; j < M; j++)
+ {
+ L_lsf[j] = L_add(L_lsf[j],
+ L_deposit_l(st->lsf_hist[i * M + j]));
+ }
+ }
+
+ for (j = 0; j < M; j++)
+ {
+ lsf[j] = extract_l(L_shr(L_lsf[j],3)); // divide by 8
+ }
+
+ Lsf_lsp(lsf, st->lsp, M);
+
+ // make log_en speech coder mode independent
+ // added again later before synthesis
+ st->log_en = sub(st->log_en, st->log_en_adjust);
+
+ // compute lsf variability vector
+ Copy(st->lsf_hist, st->lsf_hist_mean, 80);
+
+ for (i = 0; i < M; i++)
+ {
+ L_lsf_mean = 0;
+ // compute mean lsf
+ for (j = 0; j < 8; j++)
+ {
+ L_lsf_mean = L_add(L_lsf_mean,
+ L_deposit_l(st->lsf_hist_mean[i+j*M]));
+ }
+
+ lsf_mean = extract_l(L_shr(L_lsf_mean, 3));
+ // subtract mean and limit to within reasonable limits
+ // moreover the upper lsf's are attenuated
+ for (j = 0; j < 8; j++)
+ {
+ // subtract mean
+ st->lsf_hist_mean[i+j*M] =
+ sub(st->lsf_hist_mean[i+j*M], lsf_mean);
+
+ // attenuate deviation from mean, especially for upper lsf's
+ st->lsf_hist_mean[i+j*M] =
+ mult(st->lsf_hist_mean[i+j*M], lsf_hist_mean_scale[i]);
+
+ // limit the deviation
+ if (st->lsf_hist_mean[i+j*M] < 0)
+ {
+ negative = 1;
+ }
+ else
+ {
+ negative = 0;
+ }
+ st->lsf_hist_mean[i+j*M] = abs_s(st->lsf_hist_mean[i+j*M]);
+
+ // apply soft limit
+ if (sub(st->lsf_hist_mean[i+j*M], 655) > 0)
+ {
+ st->lsf_hist_mean[i+j*M] =
+ add(655, shr(sub(st->lsf_hist_mean[i+j*M], 655), 2));
+ }
+
+ // apply hard limit
+ if (sub(st->lsf_hist_mean[i+j*M], 1310) > 0)
+ {
+ st->lsf_hist_mean[i+j*M] = 1310;
+ }
+ if (negative != 0)
+ {
+ st->lsf_hist_mean[i+j*M] = -st->lsf_hist_mean[i+j*M];
+ }
+
+ }
+ }
+ }
+
+ if (st->sid_frame != 0 )
+ {
+ // Set old SID parameters, always shift
+ // even if there is no new valid_data
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+
+ if (st->valid_data != 0 ) // new data available (no CRC)
+ {
+ // Compute interpolation factor, since the division only works
+ // for values of since_last_sid < 32 we have to limit the
+ // interpolation to 32 frames
+ tmp_int_length = st->since_last_sid;
+ st->since_last_sid = 0;
+
+ if (sub(tmp_int_length, 32) > 0)
+ {
+ tmp_int_length = 32;
+ }
+ if (sub(tmp_int_length, 2) >= 0)
+ {
+ st->true_sid_period_inv = div_s(1 << 10, shl(tmp_int_length, 10));
+ }
+ else
+ {
+ st->true_sid_period_inv = 1 << 14; // 0.5 it Q15
+ }
+
+ Init_D_plsf_3(lsfState, parm[0]); // temporay initialization
+ D_plsf_3(lsfState, MRDTX, 0, &parm[1], st->lsp);
+ Set_zero(lsfState->past_r_q, M); // reset for next speech frame
+
+ log_en_index = parm[4];
+ // Q11 and divide by 4
+ st->log_en = shl(log_en_index, (11 - 2));
+
+ // Subtract 2.5 in Q11
+ st->log_en = sub(st->log_en, (2560 * 2));
+
+ // Index 0 is reserved for silence
+ if (log_en_index == 0)
+ {
+ st->log_en = MIN_16;
+ }
+
+ // no interpolation at startup after coder reset
+ // or when SID_UPD has been received right after SPEECH
+ if ((st->data_updated == 0) ||
+ (sub(st->dtxGlobalState, SPEECH) == 0)
+ )
+ {
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+ }
+ } // endif valid_data
+
+ // initialize gain predictor memory of other modes
+ ma_pred_init = sub(shr(st->log_en,1), 9000);
+ if (ma_pred_init > 0)
+ {
+ ma_pred_init = 0;
+ }
+ if (sub(ma_pred_init, -14436) < 0)
+ {
+ ma_pred_init = -14436;
+ }
+
+ predState->past_qua_en[0] = ma_pred_init;
+ predState->past_qua_en[1] = ma_pred_init;
+ predState->past_qua_en[2] = ma_pred_init;
+ predState->past_qua_en[3] = ma_pred_init;
+
+ // past_qua_en for other modes than MR122
+ ma_pred_init = mult(5443, ma_pred_init);
+ // scale down by factor 20*log10(2) in Q15
+ predState->past_qua_en_MR122[0] = ma_pred_init;
+ predState->past_qua_en_MR122[1] = ma_pred_init;
+ predState->past_qua_en_MR122[2] = ma_pred_init;
+ predState->past_qua_en_MR122[3] = ma_pred_init;
+ } // endif sid_frame
+
+ // CN generation
+ // recompute level adjustment factor Q11
+ // st->log_en_adjust = 0.9*st->log_en_adjust +
+ // 0.1*dtx_log_en_adjust[mode]);
+ st->log_en_adjust = add(mult(st->log_en_adjust, 29491),
+ shr(mult(shl(dtx_log_en_adjust[mode],5),3277),5));
+
+ // Interpolate SID info
+ int_fac = shl(add(1,st->since_last_sid), 10); // Q10
+ int_fac = mult(int_fac, st->true_sid_period_inv); // Q10 * Q15 -> Q10
+
+ // Maximize to 1.0 in Q10
+ if (sub(int_fac, 1024) > 0)
+ {
+ int_fac = 1024;
+ }
+ int_fac = shl(int_fac, 4); // Q10 -> Q14
+
+ L_log_en_int = L_mult(int_fac, st->log_en); // Q14 * Q11->Q26
+ for(i = 0; i < M; i++)
+ {
+ lsp_int[i] = mult(int_fac, st->lsp[i]);// Q14 * Q15 -> Q14
+ }
+
+ int_fac = sub(16384, int_fac); // 1-k in Q14
+
+ // (Q14 * Q11 -> Q26) + Q26 -> Q26
+ L_log_en_int = L_mac(L_log_en_int, int_fac, st->old_log_en);
+ for(i = 0; i < M; i++)
+ {
+ // Q14 + (Q14 * Q15 -> Q14) -> Q14
+ lsp_int[i] = add(lsp_int[i], mult(int_fac, st->lsp_old[i]));
+ lsp_int[i] = shl(lsp_int[i], 1); // Q14 -> Q15
+ }
+
+ // compute the amount of lsf variability
+ lsf_variab_factor = sub(st->log_pg_mean,2457); // -0.6 in Q12
+ // *0.3 Q12*Q15 -> Q12
+ lsf_variab_factor = sub(4096, mult(lsf_variab_factor, 9830));
+
+ // limit to values between 0..1 in Q12
+ if (sub(lsf_variab_factor, 4096) > 0)
+ {
+ lsf_variab_factor = 4096;
+ }
+ if (lsf_variab_factor < 0)
+ {
+ lsf_variab_factor = 0;
+ }
+ lsf_variab_factor = shl(lsf_variab_factor, 3); // -> Q15
+
+ // get index of vector to do variability with
+ lsf_variab_index = pseudonoise(&st->L_pn_seed_rx, 3);
+
+ // convert to lsf
+ Lsp_lsf(lsp_int, lsf_int, M);
+
+ // apply lsf variability
+ Copy(lsf_int, lsf_int_variab, M);
+ for(i = 0; i < M; i++)
+ {
+ lsf_int_variab[i] = add(lsf_int_variab[i],
+ mult(lsf_variab_factor,
+ st->lsf_hist_mean[i+lsf_variab_index*M]));
+ }
+
+ // make sure that LSP's are ordered
+ Reorder_lsf(lsf_int, LSF_GAP, M);
+ Reorder_lsf(lsf_int_variab, LSF_GAP, M);
+
+ // copy lsf to speech decoders lsf state
+ Copy(lsf_int, lsfState->past_lsf_q, M);
+
+ // convert to lsp
+ Lsf_lsp(lsf_int, lsp_int, M);
+ Lsf_lsp(lsf_int_variab, lsp_int_variab, M);
+
+ // Compute acoeffs Q12 acoeff is used for level
+ // normalization and postfilter, acoeff_variab is
+ // used for synthesis filter
+ // by doing this we make sure that the level
+ // in high frequenncies does not jump up and down
+
+ Lsp_Az(lsp_int, acoeff);
+ Lsp_Az(lsp_int_variab, acoeff_variab);
+
+ // For use in postfilter
+ Copy(acoeff, &A_t[0], M + 1);
+ Copy(acoeff, &A_t[M + 1], M + 1);
+ Copy(acoeff, &A_t[2 * (M + 1)], M + 1);
+ Copy(acoeff, &A_t[3 * (M + 1)], M + 1);
+
+ // Compute reflection coefficients Q15
+ A_Refl(&acoeff[1], refl);
+
+ // Compute prediction error in Q15
+ pred_err = MAX_16; // 0.99997 in Q15
+ for (i = 0; i < M; i++)
+ {
+ pred_err = mult(pred_err, sub(MAX_16, mult(refl[i], refl[i])));
+ }
+
+ // compute logarithm of prediction gain
+ Log2(L_deposit_l(pred_err), &log_pg_e, &log_pg_m);
+
+ // convert exponent and mantissa to Word16 Q12
+ log_pg = shl(sub(log_pg_e,15), 12); // Q12
+ log_pg = shr(sub(0,add(log_pg, shr(log_pg_m, 15-12))), 1);
+ st->log_pg_mean = add(mult(29491,st->log_pg_mean),
+ mult(3277, log_pg));
+
+ // Compute interpolated log energy
+ L_log_en_int = L_shr(L_log_en_int, 10); // Q26 -> Q16
+
+ // Add 4 in Q16
+ L_log_en_int = L_add(L_log_en_int, 4 * 65536L);
+
+ // subtract prediction gain
+ L_log_en_int = L_sub(L_log_en_int, L_shl(L_deposit_l(log_pg), 4));
+
+ // adjust level to speech coder mode
+ L_log_en_int = L_add(L_log_en_int,
+ L_shl(L_deposit_l(st->log_en_adjust), 5));
+
+ log_en_int_e = extract_h(L_log_en_int);
+ log_en_int_m = extract_l(L_shr(L_sub(L_log_en_int,
+ L_deposit_h(log_en_int_e)), 1));
+ level = extract_l(Pow2(log_en_int_e, log_en_int_m)); // Q4
+
+ for (i = 0; i < 4; i++)
+ {
+ // Compute innovation vector
+ build_CN_code(&st->L_pn_seed_rx, ex);
+ for (j = 0; j < L_SUBFR; j++)
+ {
+ ex[j] = mult(level, ex[j]);
+ }
+ // Synthesize
+ Syn_filt(acoeff_variab, ex, &synth[i * L_SUBFR], L_SUBFR,
+ mem_syn, 1);
+
+ } // next i
+
+ // reset codebook averaging variables
+ averState->hangVar = 20;
+ averState->hangCount = 0;
+
+ if (sub(new_state, DTX_MUTE) == 0)
+ {
+ // mute comfort noise as it has been quite a long time since
+ * last SID update was performed
+
+ tmp_int_length = st->since_last_sid;
+ if (sub(tmp_int_length, 32) > 0)
+ {
+ tmp_int_length = 32;
+ }
+
+ // safety guard against division by zero
+ if(tmp_int_length <= 0) {
+ tmp_int_length = 8;
+ }
+
+ st->true_sid_period_inv = div_s(1 << 10, shl(tmp_int_length, 10));
+
+ st->since_last_sid = 0;
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+ // subtract 1/8 in Q11 i.e -6/8 dB
+ st->log_en = sub(st->log_en, 256);
+ }
+
+ // reset interpolation length timer
+ // if data has been updated.
+ if ((st->sid_frame != 0) &&
+ ((st->valid_data != 0) ||
+ ((st->valid_data == 0) && (st->dtxHangoverAdded) != 0)))
+ {
+ st->since_last_sid = 0;
+ st->data_updated = 1;
+ }
+
+ return 0;
+}
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void dtx_dec(
+ dtx_decState *st, /* i/o : State struct */
+ Word16 mem_syn[], /* i/o : AMR decoder state */
+ D_plsfState* lsfState, /* i/o : decoder lsf states */
+ gc_predState* predState, /* i/o : prediction states */
+ Cb_gain_averageState* averState, /* i/o : CB gain average states */
+ enum DTXStateType new_state, /* i : new DTX state */
+ enum Mode mode, /* i : AMR mode */
+ Word16 parm[], /* i : Vector of synthesis parameters */
+ Word16 synth[], /* o : synthesised speech */
+ Word16 A_t[], /* o : decoded LP filter in 4 subframes*/
+ Flag *pOverflow
+)
+{
+ Word16 log_en_index;
+ Word16 i;
+ Word16 j;
+ Word16 int_fac;
+ Word32 L_log_en_int;
+ Word16 lsp_int[M];
+ Word16 log_en_int_e;
+ Word16 log_en_int_m;
+ Word16 level;
+ Word16 acoeff[M + 1];
+ Word16 refl[M];
+ Word16 pred_err;
+ Word16 ex[L_SUBFR];
+ Word16 ma_pred_init;
+ Word16 log_pg_e;
+ Word16 log_pg_m;
+ Word16 log_pg;
+ Flag negative;
+ Word16 lsf_mean;
+ Word32 L_lsf_mean;
+ Word16 lsf_variab_index;
+ Word16 lsf_variab_factor;
+ Word16 lsf_int[M];
+ Word16 lsf_int_variab[M];
+ Word16 lsp_int_variab[M];
+ Word16 acoeff_variab[M + 1];
+
+ Word16 lsf[M];
+ Word32 L_lsf[M];
+ Word16 ptr;
+ Word16 tmp_int_length;
+
+ Word32 L_temp;
+ Word16 temp;
+
+ /* This function is called if synthesis state is not SPEECH
+ * the globally passed inputs to this function are
+ * st->sid_frame
+ * st->valid_data
+ * st->dtxHangoverAdded
+ * new_state (SPEECH, DTX, DTX_MUTE)
+ */
+
+ if ((st->dtxHangoverAdded != 0) &&
+ (st->sid_frame != 0))
+ {
+ /* sid_first after dtx hangover period */
+ /* or sid_upd after dtxhangover */
+
+ /* set log_en_adjust to correct value */
+ st->log_en_adjust = dtx_log_en_adjust[mode];
+
+ ptr = st->lsf_hist_ptr + M;
+
+ if (ptr == 80)
+ {
+ ptr = 0;
+ }
+ Copy(&st->lsf_hist[st->lsf_hist_ptr], &st->lsf_hist[ptr], M);
+
+ ptr = st->log_en_hist_ptr + 1;
+
+ if (ptr == DTX_HIST_SIZE)
+ {
+ ptr = 0;
+ }
+
+ st->log_en_hist[ptr] = st->log_en_hist[st->log_en_hist_ptr]; /* Q11 */
+
+ /* compute mean log energy and lsp *
+ * from decoded signal (SID_FIRST) */
+ st->log_en = 0;
+ for (i = M - 1; i >= 0; i--)
+ {
+ L_lsf[i] = 0;
+ }
+
+ /* average energy and lsp */
+ for (i = DTX_HIST_SIZE - 1; i >= 0; i--)
+ {
+ if (st->log_en_hist[i] < 0)
+ {
+ temp = ~((~st->log_en_hist[i]) >> 3);
+ }
+ else
+ {
+ temp = st->log_en_hist[i] >> 3;
+ }
+ st->log_en = add(st->log_en, temp, pOverflow);
+ for (j = M - 1; j >= 0; j--)
+ {
+ L_lsf[j] = L_add(L_lsf[j],
+ L_deposit_l(st->lsf_hist[i * M + j]), pOverflow);
+ }
+ }
+
+ for (j = M - 1; j >= 0; j--)
+ {
+ if (L_lsf[j] < 0)
+ {
+ lsf[j] = (Word16)(~((~L_lsf[j]) >> 3));
+ }
+ else
+ {
+ lsf[j] = (Word16)(L_lsf[j] >> 3);
+ }
+ }
+
+ Lsf_lsp(lsf, st->lsp, M, pOverflow);
+
+ /* make log_en speech coder mode independent */
+ /* added again later before synthesis */
+ st->log_en = sub(st->log_en, st->log_en_adjust, pOverflow);
+
+ /* compute lsf variability vector */
+ Copy(st->lsf_hist, st->lsf_hist_mean, 80);
+
+ for (i = M - 1; i >= 0; i--)
+ {
+ L_lsf_mean = 0;
+ /* compute mean lsf */
+ for (j = 8 - 1; j >= 0; j--)
+ {
+ L_lsf_mean = L_add(L_lsf_mean,
+ L_deposit_l(st->lsf_hist_mean[i+j*M]), pOverflow);
+ }
+
+ if (L_lsf_mean < 0)
+ {
+ lsf_mean = (Word16)(~((~L_lsf_mean) >> 3));
+ }
+ else
+ {
+ lsf_mean = (Word16)(L_lsf_mean >> 3);
+ }
+ /* subtract mean and limit to within reasonable limits *
+ * moreover the upper lsf's are attenuated */
+ for (j = 8 - 1; j >= 0; j--)
+ {
+ /* subtract mean */
+ st->lsf_hist_mean[i+j*M] =
+ sub(st->lsf_hist_mean[i+j*M], lsf_mean, pOverflow);
+
+ /* attenuate deviation from mean, especially for upper lsf's */
+ st->lsf_hist_mean[i+j*M] =
+ mult(st->lsf_hist_mean[i+j*M], lsf_hist_mean_scale[i], pOverflow);
+
+ /* limit the deviation */
+ if (st->lsf_hist_mean[i+j*M] < 0)
+ {
+ negative = 1;
+ }
+ else
+ {
+ negative = 0;
+ }
+ st->lsf_hist_mean[i+j*M] = abs_s(st->lsf_hist_mean[i+j*M]);
+
+ /* apply soft limit */
+ if (st->lsf_hist_mean[i+j*M] > 655)
+ {
+ st->lsf_hist_mean[i+j*M] = 655 + ((st->lsf_hist_mean[i+j*M]
+ - 655) >> 2);
+ }
+
+ /* apply hard limit */
+ if (st->lsf_hist_mean[i+j*M] > 1310)
+ {
+ st->lsf_hist_mean[i+j*M] = 1310;
+ }
+
+ if (negative != 0)
+ {
+ st->lsf_hist_mean[i+j*M] = -st->lsf_hist_mean[i+j*M];
+ }
+ }
+ }
+ }
+
+
+ if (st->sid_frame != 0)
+ {
+ /* Set old SID parameters, always shift */
+ /* even if there is no new valid_data */
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+
+ if (st->valid_data != 0) /* new data available (no CRC) */
+ {
+ /* Compute interpolation factor, since the division only works *
+ * for values of since_last_sid < 32 we have to limit the *
+ * interpolation to 32 frames */
+ tmp_int_length = st->since_last_sid;
+ st->since_last_sid = 0;
+
+ if (tmp_int_length >= 32)
+ {
+ tmp_int_length = 32;
+ }
+
+ L_temp = ((Word32) tmp_int_length) << 10;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ *pOverflow = 1;
+ L_temp = (Word32)((tmp_int_length > 0) ? MAX_16 : MIN_16);
+ }
+ temp = (Word16) L_temp;
+
+ if (tmp_int_length >= 2)
+ {
+ st->true_sid_period_inv = div_s(1 << 10, temp);
+ }
+ else
+ {
+ st->true_sid_period_inv = 1 << 14; /* 0.5 it Q15 */
+ }
+
+ Init_D_plsf_3(lsfState, parm[0]);
+ D_plsf_3(lsfState, MRDTX, 0, &parm[1], st->lsp, pOverflow);
+ Set_zero(lsfState->past_r_q, M); /* reset for next speech frame */
+
+ log_en_index = parm[4];
+ /* Q11 and divide by 4 */
+ if ((log_en_index > 63) || (log_en_index < -64))
+ {
+ st->log_en = (log_en_index > 0) ? MAX_16 : MIN_16;
+ }
+ else
+ {
+ st->log_en = (log_en_index) << (11 - 2);
+ }
+
+ /* Subtract 2.5 in Q11 */
+ st->log_en = sub(st->log_en, (2560 * 2), pOverflow);
+
+ /* Index 0 is reserved for silence */
+ if (log_en_index == 0)
+ {
+ st->log_en = MIN_16;
+ }
+
+ /* no interpolation at startup after coder reset */
+ /* or when SID_UPD has been received right after SPEECH */
+
+ if ((st->data_updated == 0) ||
+ (st->dtxGlobalState == SPEECH))
+ {
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+ }
+ } /* endif valid_data */
+
+ /* initialize gain predictor memory of other modes */
+ if (st->log_en < 0)
+ {
+ temp = ~((~st->log_en) >> 1);
+ }
+ else
+ {
+ temp = st->log_en >> 1;
+ }
+ ma_pred_init = sub(temp, 9000, pOverflow);
+
+ if (ma_pred_init > 0)
+ {
+ ma_pred_init = 0;
+ }
+ else if (ma_pred_init < -14436)
+ {
+ ma_pred_init = -14436;
+ }
+
+ predState->past_qua_en[0] = ma_pred_init;
+ predState->past_qua_en[1] = ma_pred_init;
+ predState->past_qua_en[2] = ma_pred_init;
+ predState->past_qua_en[3] = ma_pred_init;
+
+ /* past_qua_en for other modes than MR122 */
+ ma_pred_init = mult(5443, ma_pred_init, pOverflow);
+ /* scale down by factor 20*log10(2) in Q15 */
+ predState->past_qua_en_MR122[0] = ma_pred_init;
+ predState->past_qua_en_MR122[1] = ma_pred_init;
+ predState->past_qua_en_MR122[2] = ma_pred_init;
+ predState->past_qua_en_MR122[3] = ma_pred_init;
+ } /* endif sid_frame */
+
+ /* CN generation */
+ /* recompute level adjustment factor Q11 *
+ * st->log_en_adjust = 0.9*st->log_en_adjust + *
+ * 0.1*dtx_log_en_adjust[mode]); */
+ if (dtx_log_en_adjust[mode] > 1023)
+ {
+ temp = MAX_16;
+ }
+ else if (dtx_log_en_adjust[mode] < -1024)
+ {
+ temp = MIN_16;
+ }
+ else
+ {
+ temp = mult((Word16)((Word32)dtx_log_en_adjust[mode] << 5), 3277, pOverflow);
+ }
+
+ if (temp < 0)
+ {
+ temp = ~((~temp) >> 5);
+ }
+ else
+ {
+ temp >>= 5;
+ }
+ st->log_en_adjust = add(mult(st->log_en_adjust, 29491, pOverflow), temp, pOverflow);
+
+ /* Interpolate SID info */
+ int_fac = shl(add(1, st->since_last_sid, pOverflow), 10, pOverflow); /* Q10 */
+ int_fac = mult(int_fac, st->true_sid_period_inv, pOverflow); /* Q10 * Q15 -> Q10 */
+
+ /* Maximize to 1.0 in Q10 */
+ if (int_fac > 1024)
+ {
+ int_fac = 16384;
+ }
+ else if (int_fac < -2048)
+ {
+ int_fac = MIN_16;
+ }
+ else
+ {
+ int_fac <<= 4; /* Q10 -> Q14 */
+ }
+
+ L_log_en_int = L_mult(int_fac, st->log_en, pOverflow); /* Q14 * Q11->Q26 */
+ for (i = M - 1; i >= 0; i--)
+ {
+ lsp_int[i] = mult(int_fac, st->lsp[i], pOverflow);/* Q14 * Q15 -> Q14 */
+ }
+
+ int_fac = sub(16384, int_fac, pOverflow); /* 1-k in Q14 */
+
+ /* (Q14 * Q11 -> Q26) + Q26 -> Q26 */
+ L_log_en_int = L_mac(L_log_en_int, int_fac, st->old_log_en, pOverflow);
+ for (i = M - 1; i >= 0; i--)
+ {
+ /* Q14 + (Q14 * Q15 -> Q14) -> Q14 */
+ lsp_int[i] = add(lsp_int[i], mult(int_fac, st->lsp_old[i], pOverflow), pOverflow);
+
+ L_temp = ((Word32) lsp_int[i]) << 1; /* Q14 -> Q15 */
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ *pOverflow = 1;
+ L_temp = (Word32)((lsp_int[i] > 0) ? MAX_16 : MIN_16);
+ }
+ lsp_int[i] = (Word16) L_temp;
+ }
+
+ /* compute the amount of lsf variability */
+ lsf_variab_factor = sub(st->log_pg_mean, 2457, pOverflow); /* -0.6 in Q12 */
+ /* *0.3 Q12*Q15 -> Q12 */
+ lsf_variab_factor = sub(4096, mult(lsf_variab_factor, 9830, pOverflow), pOverflow);
+
+ /* limit to values between 0..1 in Q12 */
+ if (lsf_variab_factor > 4095)
+ {
+ lsf_variab_factor = MAX_16;
+ }
+ else if (lsf_variab_factor < 0)
+ {
+ lsf_variab_factor = 0;
+ }
+ else
+ {
+ lsf_variab_factor <<= 3; /* -> Q15 */
+ }
+
+ /* get index of vector to do variability with */
+ lsf_variab_index = pseudonoise(&st->L_pn_seed_rx, 3);
+
+ /* convert to lsf */
+ Lsp_lsf(lsp_int, lsf_int, M, pOverflow);
+
+ /* apply lsf variability */
+ Copy(lsf_int, lsf_int_variab, M);
+ for (i = M - 1; i >= 0; i--)
+ {
+ lsf_int_variab[i] = add(lsf_int_variab[i],
+ mult(lsf_variab_factor,
+ st->lsf_hist_mean[i+lsf_variab_index*M], pOverflow)
+ , pOverflow);
+ }
+
+ /* make sure that LSP's are ordered */
+ Reorder_lsf(lsf_int, LSF_GAP, M, pOverflow);
+ Reorder_lsf(lsf_int_variab, LSF_GAP, M, pOverflow);
+
+ /* copy lsf to speech decoders lsf state */
+ Copy(lsf_int, lsfState->past_lsf_q, M);
+
+ /* convert to lsp */
+ Lsf_lsp(lsf_int, lsp_int, M, pOverflow);
+ Lsf_lsp(lsf_int_variab, lsp_int_variab, M, pOverflow);
+
+ /* Compute acoeffs Q12 acoeff is used for level *
+ * normalization and postfilter, acoeff_variab is *
+ * used for synthesis filter *
+ * by doing this we make sure that the level *
+ * in high frequenncies does not jump up and down */
+
+ Lsp_Az(lsp_int, acoeff, pOverflow);
+ Lsp_Az(lsp_int_variab, acoeff_variab, pOverflow);
+
+ /* For use in postfilter */
+ Copy(acoeff, &A_t[0], M + 1);
+ Copy(acoeff, &A_t[M + 1], M + 1);
+ Copy(acoeff, &A_t[2 *(M + 1)], M + 1);
+ Copy(acoeff, &A_t[3 *(M + 1)], M + 1);
+
+ /* Compute reflection coefficients Q15 */
+ A_Refl(&acoeff[1], refl, pOverflow);
+
+ /* Compute prediction error in Q15 */
+ pred_err = MAX_16; /* 0.99997 in Q15 */
+ for (i = 0; i < M; i++)
+ {
+ L_temp = (((Word32) refl[i]) * refl[i]) >> 15;
+ if (L_temp <= 0x00007fffL)
+ {
+ temp = MAX_16 - (Word16) L_temp;
+ }
+ else
+ {
+ *pOverflow = 1;
+ temp = 0;
+ }
+ pred_err = mult(pred_err, temp, pOverflow);
+ }
+
+ /* compute logarithm of prediction gain */
+ Log2(L_deposit_l(pred_err), &log_pg_e, &log_pg_m, pOverflow);
+
+ /* convert exponent and mantissa to Word16 Q12 */
+ log_pg = shl(sub(log_pg_e, 15, pOverflow), 12, pOverflow); /* Q12 */
+ log_pg = shr(sub(0, add(log_pg, shr(log_pg_m, 15 - 12, pOverflow),
+ pOverflow), pOverflow), 1, pOverflow);
+ st->log_pg_mean = add(mult(29491, st->log_pg_mean, pOverflow),
+ mult(3277, log_pg, pOverflow), pOverflow);
+
+ /* Compute interpolated log energy */
+ L_log_en_int = L_shr(L_log_en_int, 10, pOverflow); /* Q26 -> Q16 */
+
+ /* Add 4 in Q16 */
+ L_log_en_int = L_add(L_log_en_int, 4 * 65536L, pOverflow);
+
+ /* subtract prediction gain */
+ L_log_en_int = L_sub(L_log_en_int, L_shl(L_deposit_l(log_pg), 4, pOverflow), pOverflow);
+
+ /* adjust level to speech coder mode */
+ L_log_en_int = L_add(L_log_en_int,
+ L_shl(L_deposit_l(st->log_en_adjust), 5, pOverflow), pOverflow);
+
+ log_en_int_e = (Word16)(L_log_en_int >> 16);
+
+ log_en_int_m = (Word16)(L_shr(L_sub(L_log_en_int,
+ L_deposit_h(log_en_int_e), pOverflow), 1, pOverflow));
+ level = (Word16)(Pow2(log_en_int_e, log_en_int_m, pOverflow)); /* Q4 */
+
+ for (i = 0; i < 4; i++)
+ {
+ /* Compute innovation vector */
+ build_CN_code(&st->L_pn_seed_rx, ex, pOverflow);
+ for (j = L_SUBFR - 1; j >= 0; j--)
+ {
+ ex[j] = mult(level, ex[j], pOverflow);
+ }
+ /* Synthesize */
+ Syn_filt(acoeff_variab, ex, &synth[i * L_SUBFR], L_SUBFR,
+ mem_syn, 1);
+
+ } /* next i */
+
+ /* reset codebook averaging variables */
+ averState->hangVar = 20;
+ averState->hangCount = 0;
+
+ if (new_state == DTX_MUTE)
+ {
+ /* mute comfort noise as it has been quite a long time since
+ * last SID update was performed */
+
+ tmp_int_length = st->since_last_sid;
+
+ if (tmp_int_length > 32)
+ {
+ tmp_int_length = 32;
+ }
+ else if (tmp_int_length <= 0)
+ {
+ /* safety guard against division by zero */
+ tmp_int_length = 8;
+ }
+
+ L_temp = ((Word32) tmp_int_length) << 10;
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ *pOverflow = 1;
+ L_temp = (Word32)((tmp_int_length > 0) ? MAX_16 : MIN_16);
+ }
+ temp = (Word16) L_temp;
+
+ st->true_sid_period_inv = div_s(1 << 10, temp);
+
+ st->since_last_sid = 0;
+ Copy(st->lsp, st->lsp_old, M);
+ st->old_log_en = st->log_en;
+ /* subtract 1/8 in Q11 i.e -6/8 dB */
+ st->log_en = sub(st->log_en, 256, pOverflow);
+ }
+
+ /* reset interpolation length timer
+ * if data has been updated. */
+ if ((st->sid_frame != 0) &&
+ ((st->valid_data != 0) ||
+ ((st->valid_data == 0) && (st->dtxHangoverAdded) != 0)))
+ {
+ st->since_last_sid = 0;
+ st->data_updated = 1;
+ }
+
+ return;
+}
+
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: dtx_dec_activity_update
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type dtx_decState
+ lsf =
+ frame =
+
+ Outputs:
+ st points to an updated structure of type dtx_decState
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function updates the DTX parameters.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dtx_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.3.0, December 12, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void dtx_dec_activity_update(dtx_decState *st,
+ Word16 lsf[],
+ Word16 frame[])
+{
+ Word16 i;
+
+ Word32 L_frame_en;
+ Word16 log_en_e, log_en_m, log_en;
+
+ // update lsp history
+ st->lsf_hist_ptr = add(st->lsf_hist_ptr,M);
+ if (sub(st->lsf_hist_ptr, 80) == 0)
+ {
+ st->lsf_hist_ptr = 0;
+ }
+ Copy(lsf, &st->lsf_hist[st->lsf_hist_ptr], M);
+
+ // compute log energy based on frame energy
+ L_frame_en = 0; // Q0
+ for (i=0; i < L_FRAME; i++)
+ {
+ L_frame_en = L_mac(L_frame_en, frame[i], frame[i]);
+ }
+ Log2(L_frame_en, &log_en_e, &log_en_m);
+
+ // convert exponent and mantissa to Word16 Q10
+ log_en = shl(log_en_e, 10); // Q10
+ log_en = add(log_en, shr(log_en_m, 15-10));
+
+ // divide with L_FRAME i.e subtract with log2(L_FRAME) = 7.32193
+ log_en = sub(log_en, 7497+1024);
+
+ // insert into log energy buffer, no division by two as *
+ * log_en in decoder is Q11
+ st->log_en_hist_ptr = add(st->log_en_hist_ptr, 1);
+ if (sub(st->log_en_hist_ptr, DTX_HIST_SIZE) == 0)
+ {
+ st->log_en_hist_ptr = 0;
+ }
+ st->log_en_hist[st->log_en_hist_ptr] = log_en; // Q11
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void dtx_dec_activity_update(dtx_decState *st,
+ Word16 lsf[],
+ Word16 frame[],
+ Flag *pOverflow)
+{
+ Word16 i;
+
+ Word32 L_frame_en;
+ Word32 L_temp;
+ Word16 log_en_e;
+ Word16 log_en_m;
+ Word16 log_en;
+
+ /* update lsp history */
+ st->lsf_hist_ptr += M;
+
+ if (st->lsf_hist_ptr == 80)
+ {
+ st->lsf_hist_ptr = 0;
+ }
+ Copy(lsf, &st->lsf_hist[st->lsf_hist_ptr], M);
+
+ /* compute log energy based on frame energy */
+ L_frame_en = 0; /* Q0 */
+ for (i = L_FRAME - 1; i >= 0; i--)
+ {
+ L_temp = ((Word32) frame[i]) * frame[i];
+ if (L_temp != (Word32) 0x40000000L)
+ {
+ L_temp = L_temp << 1;
+ }
+ else
+ {
+ L_temp = MAX_32;
+ }
+ L_frame_en = L_add(L_frame_en, L_temp, pOverflow);
+ }
+ Log2(L_frame_en, &log_en_e, &log_en_m, pOverflow);
+
+ /* convert exponent and mantissa to Word16 Q10 */
+ L_temp = ((Word32) log_en_e) << 10;
+
+ if (L_temp != (Word32)((Word16) L_temp))
+ {
+ *pOverflow = 1;
+ L_temp = (Word32)((log_en_e > 0) ? MAX_16 : MIN_16);
+ }
+ log_en_e = (Word16) L_temp;
+
+ if (log_en_m < 0)
+ {
+ log_en_m = ~((~log_en_m) >> 5);
+ }
+ else
+ {
+ log_en_m >>= 5;
+ }
+ log_en = add(log_en_e, log_en_m, pOverflow);
+
+ /* divide with L_FRAME i.e subtract with log2(L_FRAME) = 7.32193 */
+ log_en = sub(log_en, 7497 + 1024, pOverflow);
+
+ /* insert into log energy buffer, no division by two as *
+ * log_en in decoder is Q11 */
+ st->log_en_hist_ptr += 1;
+
+ if (st->log_en_hist_ptr == DTX_HIST_SIZE)
+ {
+ st->log_en_hist_ptr = 0;
+ }
+ st->log_en_hist[st->log_en_hist_ptr] = log_en; /* Q11 */
+
+ return;
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: rx_dtx_handler
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type dtx_decState
+ frame_type = RX frame type
+
+ Returns:
+ newState = variable of type DTXStateType
+
+ Outputs:
+ st points to an updated structure of type dtx_decState
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function determines the new state of the decoder based on the frame_type
+ and sets up the decoder parameters according to newState.
+
+ Table of new SPD synthesis states
+
+ | previous SPD_synthesis_state
+ Incoming |
+ frame_type | SPEECH | DTX | DTX_MUTE
+ ---------------------------------------------------------------
+ RX_SPEECH_GOOD , | | |
+ RX_SPEECH_PR_DEGRADED | SPEECH | SPEECH | SPEECH
+ ----------------------------------------------------------------
+ RX_SPEECH_PR_BAD, | | |
+ RX_SPEECH_BAD, | SPEECH | DTX | DTX_MUTE
+ ----------------------------------------------------------------
+ RX_SID_FIRST, | DTX | DTX/(DTX_MUTE)| DTX_MUTE
+ ----------------------------------------------------------------
+ RX_SID_UPDATE, | DTX | DTX | DTX
+ ----------------------------------------------------------------
+ RX_SID_BAD, | DTX | DTX/(DTX_MUTE)| DTX_MUTE
+ ----------------------------------------------------------------
+ RX_NO_DATA | SPEECH | DTX/(DTX_MUTE)| DTX_MUTE
+ |(class2 garb.)| |
+ ----------------------------------------------------------------
+ RX_ONSET | SPEECH | DTX/(DTX_MUTE)| DTX_MUTE
+ |(class2 garb.)| |
+ ----------------------------------------------------------------
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ dtx_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.3.0, December 12, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+enum DTXStateType rx_dtx_handler(
+ dtx_decState *st, // i/o : State struct
+ enum RXFrameType frame_type // i : Frame type
+ )
+{
+ enum DTXStateType newState;
+ enum DTXStateType encState;
+
+ // DTX if SID frame or previously in DTX{_MUTE} and (NO_RX OR BAD_SPEECH)
+ if ((sub(frame_type, RX_SID_FIRST) == 0) ||
+ (sub(frame_type, RX_SID_UPDATE) == 0) ||
+ (sub(frame_type, RX_SID_BAD) == 0) ||
+ (((sub(st->dtxGlobalState, DTX) == 0) ||
+ (sub(st->dtxGlobalState, DTX_MUTE) == 0)) &&
+ ((sub(frame_type, RX_NO_DATA) == 0) ||
+ (sub(frame_type, RX_SPEECH_BAD) == 0) ||
+ (sub(frame_type, RX_ONSET) == 0))))
+ {
+ newState = DTX;
+
+ // stay in mute for these input types
+ if ((sub(st->dtxGlobalState, DTX_MUTE) == 0) &&
+ ((sub(frame_type, RX_SID_BAD) == 0) ||
+ (sub(frame_type, RX_SID_FIRST) == 0) ||
+ (sub(frame_type, RX_ONSET) == 0) ||
+ (sub(frame_type, RX_NO_DATA) == 0)))
+ {
+ newState = DTX_MUTE;
+ }
+
+ // evaluate if noise parameters are too old
+ // since_last_sid is reset when CN parameters have been updated
+ st->since_last_sid = add(st->since_last_sid, 1);
+
+ // no update of sid parameters in DTX for a long while
+ // Due to the delayed update of st->since_last_sid counter
+ // SID_UPDATE frames need to be handled separately to avoid
+ // entering DTX_MUTE for late SID_UPDATE frames
+ if((sub(frame_type, RX_SID_UPDATE) != 0) &&
+ (sub(st->since_last_sid, DTX_MAX_EMPTY_THRESH) > 0))
+ {
+ newState = DTX_MUTE;
+ }
+ }
+ else
+ {
+ newState = SPEECH;
+ st->since_last_sid = 0;
+ }
+
+ // reset the decAnaElapsed Counter when receiving CNI data the first
+ // time, to robustify counter missmatch after handover
+ // this might delay the bwd CNI analysis in the new decoder slightly.
+
+ if ((st->data_updated == 0) &&
+ (sub(frame_type, RX_SID_UPDATE) == 0))
+ {
+ st->decAnaElapsedCount = 0;
+ }
+
+ // update the SPE-SPD DTX hangover synchronization
+ // to know when SPE has added dtx hangover
+ st->decAnaElapsedCount = add(st->decAnaElapsedCount, 1);
+ st->dtxHangoverAdded = 0;
+
+ if ((sub(frame_type, RX_SID_FIRST) == 0) ||
+ (sub(frame_type, RX_SID_UPDATE) == 0) ||
+ (sub(frame_type, RX_SID_BAD) == 0) ||
+ (sub(frame_type, RX_ONSET) == 0) ||
+ (sub(frame_type, RX_NO_DATA) == 0))
+ {
+ encState = DTX;
+
+ // In frame errors simulations RX_NO_DATA may occasionally mean that
+ // a speech packet was probably sent by the encoder,
+ // the assumed _encoder_ state should be SPEECH in such cases.
+ if((sub(frame_type, RX_NO_DATA) == 0) &&
+ (sub(newState, SPEECH) == 0))
+ {
+ encState = SPEECH;
+ }
+
+ // Note on RX_ONSET operation differing from RX_NO_DATA operation:
+ // If a RX_ONSET is received in the decoder (by "accident")
+ // it is still most likely that the encoder state
+ // for the "ONSET frame" was DTX.
+
+ }
+ else
+ {
+ encState = SPEECH;
+ }
+
+ if (sub(encState, SPEECH) == 0)
+ {
+ st->dtxHangoverCount = DTX_HANG_CONST;
+ }
+ else
+ {
+ if (sub(st->decAnaElapsedCount, DTX_ELAPSED_FRAMES_THRESH) > 0)
+ {
+ st->dtxHangoverAdded = 1;
+ st->decAnaElapsedCount = 0;
+ st->dtxHangoverCount = 0;
+ }
+ else if (st->dtxHangoverCount == 0)
+ {
+ st->decAnaElapsedCount = 0;
+ }
+ else
+ {
+ st->dtxHangoverCount = sub(st->dtxHangoverCount, 1);
+ }
+ }
+
+ if (sub(newState, SPEECH) != 0)
+ {
+ // DTX or DTX_MUTE
+ // CN data is not in a first SID, first SIDs are marked as SID_BAD
+ // but will do backwards analysis if a hangover period has been added
+ // according to the state machine above
+
+ st->sid_frame = 0;
+ st->valid_data = 0;
+
+ if (sub(frame_type, RX_SID_FIRST) == 0)
+ {
+ st->sid_frame = 1;
+ }
+ else if (sub(frame_type, RX_SID_UPDATE) == 0)
+ {
+ st->sid_frame = 1;
+ st->valid_data = 1;
+ }
+ else if (sub(frame_type, RX_SID_BAD) == 0)
+ {
+ st->sid_frame = 1;
+ st->dtxHangoverAdded = 0; // use old data
+ }
+ }
+
+ return newState;
+ // newState is used by both SPEECH AND DTX synthesis routines
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+enum DTXStateType rx_dtx_handler(
+ dtx_decState *st, /* i/o : State struct */
+ enum RXFrameType frame_type,/* i : Frame type */
+ Flag *pOverflow)
+{
+ enum DTXStateType newState;
+ enum DTXStateType encState;
+
+
+ /* DTX if SID frame or previously in DTX{_MUTE} and (NO_RX OR BAD_SPEECH) */
+
+ if ((frame_type == RX_SID_FIRST) ||
+ (frame_type == RX_SID_UPDATE) ||
+ (frame_type == RX_SID_BAD) ||
+ (((st->dtxGlobalState == DTX) || (st->dtxGlobalState == DTX_MUTE)) &&
+ ((frame_type == RX_NO_DATA) || (frame_type == RX_SPEECH_BAD) ||
+ (frame_type == RX_ONSET))))
+ {
+ newState = DTX;
+
+ /* stay in mute for these input types */
+
+ if ((st->dtxGlobalState == DTX_MUTE) &&
+ ((frame_type == RX_SID_BAD) ||
+ (frame_type == RX_SID_FIRST) ||
+ (frame_type == RX_ONSET) ||
+ (frame_type == RX_NO_DATA)))
+ {
+ newState = DTX_MUTE;
+ }
+
+ /* evaluate if noise parameters are too old */
+ /* since_last_sid is reset when CN parameters have been updated */
+ st->since_last_sid = add(st->since_last_sid, 1, pOverflow);
+
+ /* no update of sid parameters in DTX for a long while */
+ /* Due to the delayed update of st->since_last_sid counter */
+ /* SID_UPDATE frames need to be handled separately to avoid */
+ /* entering DTX_MUTE for late SID_UPDATE frames */
+ if ((frame_type != RX_SID_UPDATE) &&
+ (st->since_last_sid > DTX_MAX_EMPTY_THRESH))
+ {
+ newState = DTX_MUTE;
+ }
+ }
+ else
+ {
+ newState = SPEECH;
+ st->since_last_sid = 0;
+ }
+
+ /*
+ reset the decAnaElapsed Counter when receiving CNI data the first
+ time, to robustify counter missmatch after handover
+ this might delay the bwd CNI analysis in the new decoder slightly.
+ */
+
+ if ((st->data_updated == 0) &&
+ (frame_type == RX_SID_UPDATE))
+ {
+ st->decAnaElapsedCount = 0;
+ }
+
+ /* update the SPE-SPD DTX hangover synchronization */
+ /* to know when SPE has added dtx hangover */
+ st->decAnaElapsedCount = add(st->decAnaElapsedCount, 1, pOverflow);
+ st->dtxHangoverAdded = 0;
+
+ if ((frame_type == RX_SID_FIRST) ||
+ (frame_type == RX_SID_UPDATE) ||
+ (frame_type == RX_SID_BAD) ||
+ (frame_type == RX_ONSET) ||
+ (frame_type == RX_NO_DATA))
+ {
+ encState = DTX;
+
+ /*
+ In frame errors simulations RX_NO_DATA may occasionally mean that
+ a speech packet was probably sent by the encoder,
+ the assumed _encoder_ state should be SPEECH in such cases.
+ */
+ if ((frame_type == RX_NO_DATA) &&
+ (newState == SPEECH))
+ {
+ encState = SPEECH;
+ }
+
+ /*
+ Note on RX_ONSET operation differing from RX_NO_DATA operation:
+ If a RX_ONSET is received in the decoder (by "accident")
+ it is still most likely that the encoder state
+ for the "ONSET frame" was DTX.
+ */
+ }
+ else
+ {
+ encState = SPEECH;
+ }
+
+
+ if (encState == SPEECH)
+ {
+ st->dtxHangoverCount = DTX_HANG_CONST;
+ }
+ else
+ {
+
+ if (st->decAnaElapsedCount > DTX_ELAPSED_FRAMES_THRESH)
+ {
+ st->dtxHangoverAdded = 1;
+ st->decAnaElapsedCount = 0;
+ st->dtxHangoverCount = 0;
+ }
+ else if (st->dtxHangoverCount == 0)
+ {
+ st->decAnaElapsedCount = 0;
+ }
+ else
+ {
+ st->dtxHangoverCount -= 1;
+ }
+ }
+
+ if (newState != SPEECH)
+ {
+ /* DTX or DTX_MUTE
+ * CN data is not in a first SID, first SIDs are marked as SID_BAD
+ * but will do backwards analysis if a hangover period has been added
+ * according to the state machine above
+ */
+
+ st->sid_frame = 0;
+ st->valid_data = 0;
+
+ if (frame_type == RX_SID_FIRST)
+ {
+ st->sid_frame = 1;
+ }
+ else if (frame_type == RX_SID_UPDATE)
+ {
+ st->sid_frame = 1;
+ st->valid_data = 1;
+ }
+ else if (frame_type == RX_SID_BAD)
+ {
+ st->sid_frame = 1;
+ st->dtxHangoverAdded = 0; /* use old data */
+ }
+ }
+
+ /* newState is used by both SPEECH AND DTX synthesis routines */
+ return(newState);
+}
diff --git a/media/codecs/amrnb/dec/src/dtx_dec.h b/media/codecs/amrnb/dec/src/dtx_dec.h
new file mode 100644
index 0000000..2b5a614
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/dtx_dec.h
@@ -0,0 +1,191 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/dtx_dec.h
+
+ Date: 02/06/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : dtx_dec.h
+ Purpose : Decode comfort noice when in DTX
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef DTX_DEC_H
+#define DTX_DEC_H
+#define dtx_dec_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "d_plsf.h"
+#include "gc_pred.h"
+#include "c_g_aver.h"
+#include "frame.h"
+#include "dtx_common_def.h"
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ enum DTXStateType {SPEECH = 0, DTX, DTX_MUTE};
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 since_last_sid;
+ Word16 true_sid_period_inv;
+ Word16 log_en;
+ Word16 old_log_en;
+ Word32 L_pn_seed_rx;
+ Word16 lsp[M];
+ Word16 lsp_old[M];
+
+ Word16 lsf_hist[M*DTX_HIST_SIZE];
+ Word16 lsf_hist_ptr;
+ Word16 lsf_hist_mean[M*DTX_HIST_SIZE];
+ Word16 log_pg_mean;
+ Word16 log_en_hist[DTX_HIST_SIZE];
+ Word16 log_en_hist_ptr;
+
+ Word16 log_en_adjust;
+
+ Word16 dtxHangoverCount;
+ Word16 decAnaElapsedCount;
+
+ Word16 sid_frame;
+ Word16 valid_data;
+ Word16 dtxHangoverAdded;
+
+ enum DTXStateType dtxGlobalState; /* contains previous state */
+ /* updated in main decoder */
+
+ Word16 data_updated; /* marker to know if CNI data is ever renewed */
+
+ } dtx_decState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*
+ * Function : dtx_dec_reset
+ * Purpose : Resets state memory
+ * Returns : 0 on success
+ */
+ Word16 dtx_dec_reset(dtx_decState *st);
+
+ /*
+ * Function : dtx_dec
+ * Purpose :
+ * Description :
+ */
+ void dtx_dec(
+ dtx_decState *st, /* i/o : State struct */
+ Word16 mem_syn[], /* i/o : AMR decoder state */
+ D_plsfState* lsfState, /* i/o : decoder lsf states */
+ gc_predState* predState, /* i/o : prediction states */
+ Cb_gain_averageState* averState, /* i/o : CB gain average states */
+ enum DTXStateType new_state, /* i : new DTX state */
+ enum Mode mode, /* i : AMR mode */
+ Word16 parm[], /* i : Vector of synthesis parameters */
+ Word16 synth[], /* o : synthesised speech */
+ Word16 A_t[], /* o : decoded LP filter in 4 subframes*/
+ Flag *pOverflow
+ );
+
+ void dtx_dec_activity_update(dtx_decState *st,
+ Word16 lsf[],
+ Word16 frame[],
+ Flag *pOverflow);
+
+ /*
+ * Function : rx_dtx_handler
+ * Purpose : reads the frame type and checks history
+ * Description : to decide what kind of DTX/CNI action to perform
+ */
+ enum DTXStateType rx_dtx_handler(dtx_decState *st, /* i/o : State struct */
+ enum RXFrameType frame_type,/* i : Frame type */
+ Flag *pOverflow);
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DEC_AMR_H_ */
diff --git a/media/codecs/amrnb/dec/src/ec_gains.cpp b/media/codecs/amrnb/dec/src/ec_gains.cpp
new file mode 100644
index 0000000..e73db62
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ec_gains.cpp
@@ -0,0 +1,842 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/ec_gain.c
+ Funtions:
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removed the functions ec_gain_code_init, ec_gain_pitch_init,
+ ech_gain_code_exit, and ec_gain_pitch_exit.
+
+ The ec_gains related structures are no longer dynamically allocated.
+
+ Description: Updated include files and input/output sections.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Added #ifdef __cplusplus around extern'ed table.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ These modules execute the code book gains for error concealment. This module
+ contains the init, reset, exit, and "main" functions in this process.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "ec_gains.h"
+#include "typedef.h"
+#include "cnst.h"
+#include "gmed_n.h"
+#include "gc_pred.h"
+#include "basic_op.h"
+
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here. Include conditional
+ ; compile variables also.
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL VARIABLE DEFINITIONS
+ ; Variable declaration - defined here and used outside this module
+ ----------------------------------------------------------------------------*/
+
+ extern const Word16 qua_gain_pitch[];
+ extern const Word16 qua_gain_code[];
+
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_code_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a pointer to a structure containing code state data of
+ stucture type ec_gain_codeState
+
+ Outputs:
+ None.
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function resets the state data for the ec_gain module.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ None
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int ec_gain_code_reset (ec_gain_codeState *state)
+{
+ Word16 i;
+
+ if (state == (ec_gain_codeState *) NULL){
+ // fprintf(stderr, "ec_gain_code_reset: invalid parameter\n");
+ return -1;
+ }
+
+ for ( i = 0; i < 5; i++)
+ state->gbuf[i] = 1;
+ state->past_gain_code = 0;
+ state->prev_gc = 1;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 ec_gain_code_reset(ec_gain_codeState *state)
+{
+ Word16 i;
+
+ if (state == (ec_gain_codeState *) NULL)
+ {
+ /* fprintf(stderr, "ec_gain_code_reset: invalid parameter\n"); */
+ return -1;
+ }
+
+ for (i = 0; i < 5; i++)
+ state->gbuf[i] = 1;
+ state->past_gain_code = 0;
+ state->prev_gc = 1;
+
+ return 0;
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_code
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a pointer to a structure containing code state data of
+ stucture type ec_gain_codeState
+ pred_state = pointer to MA predictor state of type gc_predState
+ state = state of the state machine of type Word16
+ gain_code = pointer to decoded innovation gain of type Word16
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ st = pointer to a pointer to a structure containing code state data of
+ stucture type ec_gain_codeState
+ pred_state = pointer to MA predictor state of type gc_predState
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+This function does error concealment using the codebook. Call this function
+only in BFI (instead of normal gain decoding function).
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ec_gain.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ static const Word16 cdown[7] =
+ {
+ 32767, 32112, 32112, 32112,
+ 32112, 32112, 22937
+ };
+
+ Word16 tmp;
+ Word16 qua_ener_MR122;
+ Word16 qua_ener;
+
+ // calculate median of last five gain values
+ tmp = gmed_n (st->gbuf,5);
+
+ // new gain = minimum(median, past_gain) * cdown[state]
+ if (sub (tmp, st->past_gain_code) > 0)
+ {
+ tmp = st->past_gain_code;
+ }
+ tmp = mult (tmp, cdown[state]);
+ *gain_code = tmp;
+
+ // update table of past quantized energies with average of
+ // current values
+
+ gc_pred_average_limited(pred_state, &qua_ener_MR122, &qua_ener);
+ gc_pred_update(pred_state, qua_ener_MR122, qua_ener);
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+void ec_gain_code(
+ ec_gain_codeState *st, /* i/o : State struct */
+ gc_predState *pred_state, /* i/o : MA predictor state */
+ Word16 state, /* i : state of the state machine */
+ Word16 *gain_code, /* o : decoded innovation gain */
+ Flag *pOverflow
+)
+{
+ static const Word16 cdown[7] =
+ {
+ 32767, 32112, 32112, 32112,
+ 32112, 32112, 22937
+ };
+
+ Word16 tmp;
+ Word16 qua_ener_MR122;
+ Word16 qua_ener;
+
+ /* calculate median of last five gain values */
+ tmp = gmed_n(st->gbuf, 5);
+
+ /* new gain = minimum(median, past_gain) * cdown[state] */
+ if (sub(tmp, st->past_gain_code, pOverflow) > 0)
+ {
+ tmp = st->past_gain_code;
+ }
+ tmp = mult(tmp, cdown[state], pOverflow);
+ *gain_code = tmp;
+
+ /* update table of past quantized energies with average of
+ * current values
+ */
+ gc_pred_average_limited(pred_state, &qua_ener_MR122, &qua_ener, pOverflow);
+ gc_pred_update(pred_state, qua_ener_MR122, qua_ener);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_code_update
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a pointer to a structure containing code state data of
+ stucture type ec_gain_codeState
+ bfi = a flag that indicates if the frame is bad of type Word16
+ prev_bf = a flag that indicates if the previous frame was bad of type Word16
+ gain_code = pointer to decoded innovation gain of type Word16
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ st = pointer to a pointer to a structure containing code state data of
+ stucture type ec_gain_codeState
+ gain_code = pointer to decoded innovation gain of type Word16
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Purpose : update the codebook gain concealment state;
+ limit gain_code if the previous frame was bad
+ Call this function always after decoding (or concealing)
+ the gain
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ec_gain.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Word16 i;
+
+ // limit gain_code by previous good gain if previous frame was bad
+ if (bfi == 0)
+ {
+ if (prev_bf != 0)
+ {
+ if (sub (*gain_code, st->prev_gc) > 0)
+ {
+ *gain_code = st->prev_gc;
+ }
+ }
+ st->prev_gc = *gain_code;
+ }
+
+ // update EC states: previous gain, gain buffer
+ st->past_gain_code = *gain_code;
+
+ for (i = 1; i < 5; i++)
+ {
+ st->gbuf[i - 1] = st->gbuf[i];
+ }
+ st->gbuf[4] = *gain_code;
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+void ec_gain_code_update(
+ ec_gain_codeState *st, /* i/o : State struct */
+ Word16 bfi, /* i : flag: frame is bad */
+ Word16 prev_bf, /* i : flag: previous frame was bad */
+ Word16 *gain_code, /* i/o : decoded innovation gain */
+ Flag *pOverflow
+)
+{
+ Word16 i;
+
+ /* limit gain_code by previous good gain if previous frame was bad */
+ if (bfi == 0)
+ {
+ if (prev_bf != 0)
+ {
+ if (sub(*gain_code, st->prev_gc, pOverflow) > 0)
+ {
+ *gain_code = st->prev_gc;
+ }
+ }
+ st->prev_gc = *gain_code;
+ }
+
+ /* update EC states: previous gain, gain buffer */
+ st->past_gain_code = *gain_code;
+
+ for (i = 1; i < 5; i++)
+ {
+ st->gbuf[i - 1] = st->gbuf[i];
+ }
+ st->gbuf[4] = *gain_code;
+
+ return;
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_pitch
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a pointer to a structure containing code
+ state data of stucture type ec_gain_pitchState
+ state = state of the state machine of type Word16
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ state = pointer to a pointer to a structure containing code
+ state data of stucture type ec_gain_pitchState
+ gain_pitch = pointer to pitch gain (Q14) of type Word16
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function conceals the error using code gain implementation in this
+ function.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ec_gain.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+ static const Word16 pdown[7] =
+ {
+ 32767, 32112, 32112, 26214,
+ 9830, 6553, 6553
+ };
+
+ Word16 tmp;
+
+ // calculate median of last five gains
+ tmp = gmed_n (st->pbuf, 5);
+
+ // new gain = minimum(median, past_gain) * pdown[state]
+ if (sub (tmp, st->past_gain_pit) > 0)
+ {
+ tmp = st->past_gain_pit;
+ }
+ *gain_pitch = mult (tmp, pdown[state]);
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+void ec_gain_pitch(
+ ec_gain_pitchState *st, /* i/o : state variables */
+ Word16 state, /* i : state of the state machine */
+ Word16 *gain_pitch, /* o : pitch gain (Q14) */
+ Flag *pOverflow
+)
+{
+ static const Word16 pdown[7] =
+ {
+ 32767, 32112, 32112, 26214,
+ 9830, 6553, 6553
+ };
+
+ Word16 tmp;
+
+ /* calculate median of last five gains */
+ tmp = gmed_n(st->pbuf, 5);
+
+ /* new gain = minimum(median, past_gain) * pdown[state] */
+ if (sub(tmp, st->past_gain_pit, pOverflow) > 0)
+ {
+ tmp = st->past_gain_pit;
+ }
+ *gain_pitch = mult(tmp, pdown[state], pOverflow);
+}
+
+/****************************************************************************/
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_pitch_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = state of the state machine of type Word16
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ state = pointer to a pointer to a structure containing code
+ state data of stucture type ec_gain_pitchState
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Function: ec_gain_pitch_reset
+ Purpose: Resets state memory
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ec_gain.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int ec_gain_pitch_reset (ec_gain_pitchState *state)
+{
+ Word16 i;
+
+ if (state == (ec_gain_pitchState *) NULL){
+ // fprintf(stderr, "ec_gain_pitch_reset: invalid parameter\n");
+ return -1;
+ }
+
+ for(i = 0; i < 5; i++)
+ state->pbuf[i] = 1640;
+ state->past_gain_pit = 0;
+ state->prev_gp = 16384;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+Word16 ec_gain_pitch_reset(ec_gain_pitchState *state)
+{
+ Word16 i;
+
+ if (state == (ec_gain_pitchState *) NULL)
+ {
+ /* fprintf(stderr, "ec_gain_pitch_reset: invalid parameter\n"); */
+ return -1;
+ }
+
+ for (i = 0; i < 5; i++)
+ state->pbuf[i] = 1640;
+ state->past_gain_pit = 0;
+ state->prev_gp = 16384;
+
+ return 0;
+}
+
+/****************************************************************************/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ec_gain_pitch_update
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a pointer to a structure containing code
+ state data of stucture type ec_gain_pitchState
+ bfi = flag indicating the frame is bad of type Word16
+ prev_bf = flag indicating the previous frame was bad of type Word16
+ gain_pitch = pointer to pitch gain of type Word16
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ state = pointer to a pointer to a structure containing code
+ state data of stucture type ec_gain_pitchState
+ gain_pitch = pointer to pitch gain of type Word16
+ pOverflow = 1 if there is an overflow else it is zero.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Purpose : update the pitch gain concealment state;
+ limit gain_pitch if the previous frame was bad
+ Call this function always after decoding (or concealing)
+ the gain
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ec_gain.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Word16 i;
+
+ if (bfi == 0)
+ {
+ if (prev_bf != 0)
+ {
+ if (sub (*gain_pitch, st->prev_gp) > 0)
+ {
+ *gain_pitch = st->prev_gp;
+ }
+ }
+ st->prev_gp = *gain_pitch;
+ }
+
+ st->past_gain_pit = *gain_pitch;
+
+ if (sub (st->past_gain_pit, 16384) > 0) // if (st->past_gain_pit > 1.0)
+ {
+ st->past_gain_pit = 16384;
+ }
+ for (i = 1; i < 5; i++)
+ {
+ st->pbuf[i - 1] = st->pbuf[i];
+ }
+ st->pbuf[4] = st->past_gain_pit;
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+void ec_gain_pitch_update(
+ ec_gain_pitchState *st, /* i/o : state variables */
+ Word16 bfi, /* i : flag: frame is bad */
+ Word16 prev_bf, /* i : flag: previous frame was bad */
+ Word16 *gain_pitch, /* i/o : pitch gain */
+ Flag *pOverflow
+)
+{
+ Word16 i;
+
+ if (bfi == 0)
+ {
+ if (prev_bf != 0)
+ {
+ if (sub(*gain_pitch, st->prev_gp, pOverflow) > 0)
+ {
+ *gain_pitch = st->prev_gp;
+ }
+ }
+ st->prev_gp = *gain_pitch;
+ }
+
+ st->past_gain_pit = *gain_pitch;
+
+ if (sub(st->past_gain_pit, 16384, pOverflow) > 0)
+ /* if (st->past_gain_pit > 1.0) */
+ {
+ st->past_gain_pit = 16384;
+ }
+ for (i = 1; i < 5; i++)
+ {
+ st->pbuf[i - 1] = st->pbuf[i];
+ }
+ st->pbuf[4] = st->past_gain_pit;
+}
+
+
diff --git a/media/codecs/amrnb/dec/src/ec_gains.h b/media/codecs/amrnb/dec/src/ec_gains.h
new file mode 100644
index 0000000..e05a0af
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ec_gains.h
@@ -0,0 +1,209 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/ec_gains.h
+
+ Date: 01/28/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : ec_gains.c
+ Purpose: : Error concealment for pitch and codebook gains
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _EC_GAINS_H_
+#define _EC_GAINS_H_
+#define ec_gains_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "gc_pred.h"
+
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 pbuf[5];
+ Word16 past_gain_pit;
+ Word16 prev_gp;
+ } ec_gain_pitchState;
+
+ typedef struct
+ {
+ Word16 gbuf[5];
+ Word16 past_gain_code;
+ Word16 prev_gc;
+ } ec_gain_codeState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+
+ /*
+ * Function : ec_gain_code_reset
+ * Purpose : Resets state memory
+ *
+ */
+ Word16 ec_gain_code_reset(
+ ec_gain_codeState *state
+ );
+
+
+ /*
+ * Function : ec_gain_code
+ * Purpose : conceal the codebook gain
+ * Call this function only in BFI (instead of normal gain
+ * decoding function)
+ */
+ void ec_gain_code(
+ ec_gain_codeState *st, /* i/o : State struct */
+ gc_predState *pred_state, /* i/o : MA predictor state */
+ Word16 state, /* i : state of the state machine */
+ Word16 *gain_code, /* o : decoded innovation gain */
+ Flag *pOverflow
+ );
+
+ /*
+ * Function : ec_gain_code_update
+ * Purpose : update the codebook gain concealment state;
+ * limit gain_code if the previous frame was bad
+ * Call this function always after decoding (or concealing)
+ * the gain
+ */
+ void ec_gain_code_update(
+ ec_gain_codeState *st, /* i/o : State struct */
+ Word16 bfi, /* i : flag: frame is bad */
+ Word16 prev_bf, /* i : flag: previous frame was bad */
+ Word16 *gain_code, /* i/o : decoded innovation gain */
+ Flag *pOverflow
+ );
+
+
+ /*
+ * Function: ec_gain_pitch_reset
+ * Purpose: Resets state memory
+ */
+ Word16 ec_gain_pitch_reset(
+ ec_gain_pitchState *state
+ );
+
+ /*
+ * Function : ec_gain_pitch_exit
+ * Purpose : The memory used for state memory is freed
+ */
+ void ec_gain_pitch_exit(
+ ec_gain_pitchState **state
+ );
+
+ /*
+ * Function : ec_gain_pitch
+ * Purpose : conceal the pitch gain
+ * Call this function only in BFI (instead of normal gain
+ * decoding function)
+ */
+ void ec_gain_pitch(
+ ec_gain_pitchState *st, /* i/o : state variables */
+ Word16 state, /* i : state of the state machine */
+ Word16 *gain_pitch, /* o : pitch gain (Q14) */
+ Flag *pOverflow
+ );
+
+ /*
+ * Function : ec_gain_pitch_update
+ * Purpose : update the pitch gain concealment state;
+ * limit gain_pitch if the previous frame was bad
+ * Call this function always after decoding (or concealing)
+ * the gain
+ */
+ void ec_gain_pitch_update(
+ ec_gain_pitchState *st, /* i/o : state variables */
+ Word16 bfi, /* i : flag: frame is bad */
+ Word16 prev_bf, /* i : flag: previous frame was bad */
+ Word16 *gain_pitch, /* i/o : pitch gain */
+ Flag *pOverflow
+ );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _EC_GAINS_H_ */
+
+
diff --git a/media/codecs/amrnb/dec/src/ex_ctrl.cpp b/media/codecs/amrnb/dec/src/ex_ctrl.cpp
new file mode 100644
index 0000000..f18054b
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ex_ctrl.cpp
@@ -0,0 +1,219 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/ex_ctrl.c
+ Funtions: ex_ctrl
+
+ Date: 02/08/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "ex_ctrl.h"
+#include "typedef.h"
+#include "cnst.h"
+#include "copy.h"
+#include "set_zero.h"
+#include "gmed_n.h"
+#include "sqrt_l.h"
+#include "basic_op.h"
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ex_ctrl
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ excitation = pointer to current subframe excitation of type Word16
+ excEnergy = Exc. Energy, sqrt(totEx*totEx) of type Word16
+ exEnergyHist = pointer to history of subframe energies of type Word16
+ voicedHangover = # of fr. after last voiced fr of type Word16
+ carefulFlag = restrict dynamic in scaling of type Word16
+ pOverflow = pointer to overflow indicator
+
+ Outputs:
+ pOverflow = 1 if overflow exists in the math functions called by this function.
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Function : Ex_ctrl
+ Purpose : Charaterice synthesis speech and detect background noise
+ Returns : background noise decision; 0 = no bgn, 1 = bgn
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ex_ctrl.c, 3GPP TS 26.101 version 4.1.0 Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+Word16 Ex_ctrl(Word16 excitation[], /*i/o: Current subframe excitation */
+ Word16 excEnergy, /* i : Exc. Energy, sqrt(totEx*totEx)*/
+ Word16 exEnergyHist[], /* i : History of subframe energies */
+ Word16 voicedHangover, /* i : # of fr. after last voiced fr.*/
+ Word16 prevBFI, /* i : Set i previous BFI */
+ Word16 carefulFlag, /* i : Restrict dymamic in scaling */
+ Flag *pOverflow
+ )
+{
+ Word16 i, exp;
+ Word16 testEnergy, scaleFactor, avgEnergy, prevEnergy;
+ Word32 t0;
+
+ /* get target level */
+ avgEnergy = gmed_n(exEnergyHist, 9);
+
+ prevEnergy = shr(add(exEnergyHist[7], exEnergyHist[8], pOverflow) , 1, pOverflow);
+
+ if (exEnergyHist[8] < prevEnergy)
+ {
+ prevEnergy = exEnergyHist[8];
+ }
+
+ /* upscaling to avoid too rapid energy rises for some cases */
+ if ((excEnergy < avgEnergy) && (excEnergy > 5))
+ {
+ testEnergy = shl(prevEnergy, 2, pOverflow); /* testEnergy = 4*prevEnergy; */
+
+ if ((voicedHangover < 7) || prevBFI != 0)
+ {
+ /* testEnergy = 3*prevEnergy */
+ testEnergy = sub(testEnergy, prevEnergy, pOverflow);
+ }
+
+ if (avgEnergy > testEnergy)
+ {
+ avgEnergy = testEnergy;
+ }
+
+ /* scaleFactor=avgEnergy/excEnergy in Q0 (const 29 below)*/
+ exp = norm_s(excEnergy);
+ excEnergy = shl(excEnergy, exp, pOverflow);
+ excEnergy = div_s((Word16) 16383, excEnergy);
+ t0 = L_mult(avgEnergy, excEnergy, pOverflow);
+ t0 = L_shr(t0, sub(20, exp, pOverflow), pOverflow);
+ /* const=30 for t0 in Q0, 20 for Q10 */
+ if (t0 > 32767)
+ {
+ t0 = 32767; /* saturate */
+ }
+ scaleFactor = extract_l(t0);
+
+ /* test if scaleFactor > 3.0 */
+ if (carefulFlag != 0 && (scaleFactor > 3072))
+ {
+ scaleFactor = 3072;
+ }
+
+ /* scale the excitation by scaleFactor */
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ t0 = L_mult(scaleFactor, excitation[i], pOverflow);
+ t0 = L_shr(t0, 11, pOverflow);
+ excitation[i] = extract_l(t0);
+ }
+ }
+
+ return 0;
+}
diff --git a/media/codecs/amrnb/dec/src/ex_ctrl.h b/media/codecs/amrnb/dec/src/ex_ctrl.h
new file mode 100644
index 0000000..11c632e
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ex_ctrl.h
@@ -0,0 +1,131 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/ex_ctrl.h
+
+ Date: 02/08/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : ex_ctrl.h
+ Purpose : Excitation Control module in background noise
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef ex_ctrl_h
+#define ex_ctrl_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "cnst.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+#define L_ENERGYHIST 60
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ /*
+ * Function : Ex_ctrl
+ * Purpose : Charaterice synthesis speech and detect background noise
+ * Returns : background noise decision; 0 = bgn, 1 = no bgn
+ */
+ Word16 Ex_ctrl(Word16 excitation[], /*i/o: Current subframe excitation */
+ Word16 excEnergy, /* i : Exc. Energy, sqrt(totEx*totEx)*/
+ Word16 exEnergyHist[], /* i : History of subframe energies */
+ Word16 voicedHangover, /* i : # of fr. after last voiced fr.*/
+ Word16 prevBFI, /* i : Set i previous BFI */
+ Word16 carefulFlag, /* i : Restrict dymamic in scaling */
+ Flag *pOverflow
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ex_ctrl_h_ */
+
+
+
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/gsmamr_dec.h b/media/codecs/amrnb/dec/src/gsmamr_dec.h
new file mode 100644
index 0000000..dc64d67
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/gsmamr_dec.h
@@ -0,0 +1,157 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm-amr/c/include/gsmamr_dec.h
+
+ Date: 09/10/2001
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Adding comments and removing some tables as per review comments.
+
+ Description: Replace enum Mode with enum Frame_Type_3GPP and updated function
+ prototype of AMRDecode().
+
+ Description: Added back the enum Mode type definition, removed RXFrameType
+ type definition, and updated AMRDecode and GSMInitDecode function
+ prototypes.
+
+ Description: Added #defines for WMF and IF2. Updated AMRDecode function
+ prototype.
+
+ Description: Removed enum Mode type definition and updated AMRDecode function
+ prototype.
+
+ Description: Renamed WMF and IF2 to AMR_WMF and AMR_IF2, respectively. Added
+ #define for AMR_ETS format.
+
+ Description: Rename input format defines to make it unique to the decoder.
+
+ Description: Added comment to describe L_FRAME.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description: Included file "typedefs.h" to avoid re-declaring similar typedef
+ this for OSCL-ed compatibility
+
+ Description: Included file "gsm_amr_typedefs.h" and eliminated re-definition
+ of types UWord8, Word8, Word16
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This header contains all the necessary information needed to allow the gsm amr
+ decoder library to be used properly upon release.
+
+------------------------------------------------------------------------------
+*/
+#ifndef _GSMAMR_DEC_H_
+#define _GSMAMR_DEC_H_
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "gsm_amr_typedefs.h"
+#include "frame_type_3gpp.h"
+#include "amrdecode.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ----------------------------------------------------------------------------*/
+ /* Number of 13-bit linear PCM samples per 20 ms frame */
+ /* L_FRAME = (8 kHz) * (20 msec) = 160 samples */
+#define L_FRAME 160
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ----------------------------------------------------------------------------*/
+ /*
+ * This function allocates memory for filter structure and initializes state
+ * memory used by the GSM AMR decoder. This function returns zero. It will
+ * return negative one if there is an error.
+ */
+ Word16 GSMInitDecode(void **state_data,
+ Word8 *id);
+
+ /*
+ * This function resets the state memory used by the GSM AMR decoder. This
+ * function returns zero. It will return negative one if there is an error.
+ */
+ Word16 Speech_Decode_Frame_reset(void *state_data);
+
+ /*
+ * This function frees up the memory used for the state memory of the
+ * GSM AMR decoder.
+ */
+ void GSMDecodeFrameExit(void **state_data);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GSMAMR_DEC_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/if2_to_ets.cpp b/media/codecs/amrnb/dec/src/if2_to_ets.cpp
new file mode 100644
index 0000000..733c8b8
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/if2_to_ets.cpp
@@ -0,0 +1,196 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+ Pathname: ./audio/gsm-amr/c/src/if2_to_ets.c
+ Funtions: if2_to_ets
+
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "frame_type_3gpp.h"
+#include "if2_to_ets.h"
+#include "typedef.h"
+#include "bitreorder_tab.h"
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: if2_to_ets
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ frame_type_3gpp = decoder speech bit rate (enum Frame_Type_3GPP)
+ if2_input_ptr = pointer to input encoded speech bits in IF2 format (Word8)
+ ets_output_ptr = pointer to output encoded speech bits in ETS format (Word16)
+
+ Outputs:
+ ets_output_ptr = pointer to encoded speech bits in the ETS format (Word16)
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs a transformation on the data buffers. It converts the
+ data format from IF2 to ETS. IF2 is the storage format where the frame type
+ is in the first four bits of the first byte. The upper four bits of that byte
+ contain the first four encoded speech bits for the frame. The following bytes
+ contain the rest of the encoded speech bits. The final byte has padded zeros
+ to make the frame byte aligned. ETS format has the encoded speech
+ bits each separate with only one bit stored in each word.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+AMR Speech Codec Frame Structure", 3GPP TS 26.101 version 4.1.0 Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void if2_to_ets(
+ enum Frame_Type_3GPP frame_type_3gpp,
+ UWord8 *if2_input_ptr,
+ Word16 *ets_output_ptr)
+{
+
+ Word16 i;
+ Word16 j;
+ Word16 x = 0;
+
+ /*
+ * The following section of code accesses bits in the IF2 method of
+ * bit ordering. Each bit is given its own location in the buffer pointed
+ * to by ets_output_ptr. The bits (for modes less than AMR_SID) are
+ * reordered using the tables in bitreorder.c before the data is stored
+ * into the buffer pointed to by ets_output_ptr.
+ */
+
+ if (frame_type_3gpp < AMR_SID)
+ {
+ for (j = 4; j < 8; j++)
+ {
+ ets_output_ptr[reorderBits[frame_type_3gpp][x++]] =
+ (if2_input_ptr[0] >> j) & 0x01;
+ }
+ for (i = 1; i < numCompressedBytes[frame_type_3gpp]; i++)
+ {
+ for (j = 0; j < 8; j++)
+ {
+ if (x >= numOfBits[frame_type_3gpp])
+ {
+ break;
+ }
+ ets_output_ptr[reorderBits[frame_type_3gpp][x++]] =
+ (if2_input_ptr[i] >> j) & 0x01;
+ }
+ }
+ }
+ else
+ {
+ for (j = 4; j < 8; j++)
+ {
+ ets_output_ptr[x++] =
+ (if2_input_ptr[0] >> j) & 0x01;
+ }
+ for (i = 1; i < numCompressedBytes[frame_type_3gpp]; i++)
+ {
+ for (j = 0; j < 8; j++)
+ {
+ ets_output_ptr[x++] =
+ (if2_input_ptr[i] >> j) & 0x01;
+ }
+ }
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/if2_to_ets.h b/media/codecs/amrnb/dec/src/if2_to_ets.h
new file mode 100644
index 0000000..490565d
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/if2_to_ets.h
@@ -0,0 +1,124 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/include/src/if2_to_ets.h
+
+ Date: 01/22/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changed mode to frame_type_3gpp
+
+ Description: Updated template to make it build in Symbian. Updated copyright
+ year.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the if2_to_ets function.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef IF2_TO_ETS_H
+#define IF2_TO_ETS_H
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "frame_type_3gpp.h"
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ void if2_to_ets(enum Frame_Type_3GPP frame_type_3gpp,
+ UWord8 *if2_input_ptr,
+ Word16 *ets_output_ptr);
+
+
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/media/codecs/amrnb/dec/src/int_lsf.cpp b/media/codecs/amrnb/dec/src/int_lsf.cpp
new file mode 100644
index 0000000..2ca30de
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/int_lsf.cpp
@@ -0,0 +1,315 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/int_lsf.c
+
+ Date: 04/20/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Put file into template and first pass at optimization.
+
+ Description: Made changes based on comments from the review meeting. Used
+ pointers instead of index addressing in the arrays.
+
+ Description: Added type definition to the input/output section. Fixed tabs.
+ Deleted pseudo-code.
+
+ Description: Synchronized file with UMTS versin 3.2.0. Updated coding
+ template. Removed unnecessary include files.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Modified FOR loops to count down.
+ 2. Made some cosmetic changes in the Pseudo-code section.
+
+ Description: Changed to pass in overflow flag pointer to the add() routine.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "int_lsf.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Int_lsf
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ lsf_old = LSF vector at the 4th SF of past frame (Word16)
+ lsf_new = LSF vector at the 4th SF of present frame (Word16)
+ i_subfr = Current subframe (equal to 0,40,80 or 120) (Word16)
+ lsf_out = interpolated LSF parameters for current subframe (Word16)
+
+ Outputs:
+ lsf_out = new interpolated LSF parameters for current subframe
+ pOverflow = pointer of type Flag * to overflow indicator.
+
+ Returns:
+ None.
+
+ Global Variables Used:
+ None.
+
+ Local Variables Needed:
+ None.
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function interpolates the LSFs for selected subframe.
+ The 20 ms speech frame is divided into 4 subframes. The LSFs are
+ interpolated at the 1st, 2nd and 3rd subframe and only forwarded
+ at the 4th subframe.
+
+ |------|------|------|------|
+ sf1 sf2 sf3 sf4
+ F0 F1
+
+ sf1: 3/4 F0 + 1/4 F1 sf3: 1/4 F0 + 3/4 F1
+ sf2: 1/2 F0 + 1/2 F1 sf4: F1
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None.
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ int_lsf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void Int_lsf(
+ Word16 lsf_old[], // i : LSF vector at the 4th SF of past frame
+ Word16 lsf_new[], // i : LSF vector at the 4th SF of present frame
+ Word16 i_subfr, // i : Pointer to current sf (equal to 0,40,80 or 120)
+ Word16 lsf_out[] // o : interpolated LSF parameters for current sf
+)
+{
+ Word16 i;
+
+ if ( i_subfr == 0 )
+ {
+ for (i = 0; i < M; i++) {
+ lsf_out[i] = add(sub(lsf_old[i], shr(lsf_old[i], 2)),
+ shr(lsf_new[i], 2));
+ }
+ }
+ else if ( sub(i_subfr, 40) == 0 )
+ {
+ for (i = 0; i < M; i++) {
+ lsf_out[i] = add(shr(lsf_old[i],1), shr(lsf_new[i], 1) );
+ }
+ }
+ else if ( sub(i_subfr, 80) == 0 )
+ {
+ for (i = 0; i < M; i++) {
+ lsf_out[i] = add(shr(lsf_old[i], 2),
+ sub(lsf_new[i], shr(lsf_new[i], 2)));
+ }
+ }
+ else if ( sub(i_subfr, 120) == 0 )
+ {
+ for (i = 0; i < M; i++) {
+ lsf_out[i] = lsf_new[i];
+ }
+ }
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void Int_lsf(
+ Word16 lsf_old[], /* i : LSF vector at the 4th SF of past frame */
+ Word16 lsf_new[], /* i : LSF vector at the 4th SF of present frame */
+ Word16 i_subfr, /* i : Current sf (equal to 0,40,80 or 120) */
+ Word16 lsf_out[], /* o : interpolated LSF parameters for current sf */
+ Flag *pOverflow /* o : flag set if overflow occurs */
+)
+{
+ Word16 i;
+ Word16 temp1;
+ Word16 temp2;
+
+ if (i_subfr == 0)
+ {
+ for (i = M - 1; i >= 0; i--)
+ {
+ if (*(lsf_old + i) < 0)
+ {
+ temp1 = ~(~(*(lsf_old + i)) >> 2);
+ }
+ else
+ {
+ temp1 = *(lsf_old + i) >> 2;
+ }
+ if (*(lsf_new + i) < 0)
+ {
+ temp2 = ~(~(*(lsf_new + i)) >> 2);
+ }
+ else
+ {
+ temp2 = *(lsf_new + i) >> 2;
+ }
+ *(lsf_out + i) = add((Word16)(*(lsf_old + i) - temp1),
+ (Word16)temp2,
+ pOverflow);
+ }
+ }
+
+ else if (i_subfr == 40)
+ {
+ for (i = M - 1; i >= 0; i--)
+ {
+ if (*(lsf_old + i) < 0)
+ {
+ temp1 = ~(~(*(lsf_old + i)) >> 1);
+ }
+ else
+ {
+ temp1 = *(lsf_old + i) >> 1;
+ }
+ if (*(lsf_new + i) < 0)
+ {
+ temp2 = ~(~(*(lsf_new + i)) >> 1);
+ }
+ else
+ {
+ temp2 = *(lsf_new + i) >> 1;
+ }
+ *(lsf_out + i) = add(
+ temp1,
+ temp2,
+ pOverflow);
+ }
+ }
+
+ else if (i_subfr == 80)
+ {
+ for (i = M - 1; i >= 0; i--)
+ {
+ if (*(lsf_old + i) < 0)
+ {
+ temp1 = ~(~(*(lsf_old + i)) >> 2);
+ }
+ else
+ {
+ temp1 = *(lsf_old + i) >> 2;
+ }
+ if (*(lsf_new + i) < 0)
+ {
+ temp2 = ~(~(*(lsf_new + i)) >> 2);
+ }
+ else
+ {
+ temp2 = *(lsf_new + i) >> 2;
+ }
+ *(lsf_out + i) = add((Word16)temp1,
+ (Word16)(*(lsf_new + i) - temp2),
+ pOverflow);
+
+ }
+ }
+
+ else if (i_subfr == 120)
+ {
+ for (i = M - 1; i >= 0; i--)
+ {
+ *(lsf_out + i) = *(lsf_new + i);
+ }
+ }
+
+ return;
+}
+
diff --git a/media/codecs/amrnb/dec/src/lsp_avg.cpp b/media/codecs/amrnb/dec/src/lsp_avg.cpp
new file mode 100644
index 0000000..9b65c7a
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/lsp_avg.cpp
@@ -0,0 +1,317 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/lsp_avg.c
+ Functions:
+
+
+ Date: 04/14/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removed the functions lsp_avg_init and lsp_avg_exit.
+ The lsp_avg related structure is no longer dynamically allocated.
+
+ Also, placed code in the proper PV Software Template.
+
+ Description: Per review comments, updated the inputs/outputs section
+ for the function lsp_avg.
+
+ Description: Changed to accept the pOverflow flag for EPOC compatibility.
+
+ Description: Per review comments, I added a description of pOverflow
+ to the input/output section of the template. I also removed an unnecessary
+ include file, <stdio.h>
+
+ Description: Removed q_plsf_5.tab from Include section and added
+ q_plsf_5_tbl.h to Include section. Changed "mean_lsf"
+ to "mean_lsf_5" in lsp_avg_reset().
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Changed round function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ LSP averaging and history
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "lsp_avg.h"
+#include "basic_op.h"
+#include "oper_32b.h"
+#include "copy.h"
+#include "q_plsf_5_tbl.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL VARIABLES REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: lsp_avg_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to structure of type lsp_avgState
+
+ Outputs:
+ fields of the structure pointed to by state are initialized.
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+lsp_avg.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int lsp_avg_reset (lsp_avgState *st)
+{
+ if (st == (lsp_avgState *) NULL){
+ // fprintf(stderr, "lsp_avg_reset: invalid parameter\n");
+ return -1;
+ }
+
+ Copy(mean_lsf, &st->lsp_meanSave[0], M);
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 lsp_avg_reset(lsp_avgState *st)
+{
+ if (st == (lsp_avgState *) NULL)
+ {
+ /* fprintf(stderr, "lsp_avg_reset: invalid parameter\n"); */
+ return -1;
+ }
+
+ Copy(mean_lsf_5, &st->lsp_meanSave[0], M);
+
+ return 0;
+}
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: lsp_avg
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to structure of type lsp_avgState
+ lsp = pointer to Word16, which reflects the state of the state machine
+
+ Outputs:
+ st = pointer to structure of type lsp_avgState
+ pOverflow = pointer to type Flag -- overflow indicator
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+lsp_avg.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+void lsp_avg (
+ lsp_avgState *st, // i/o : State struct Q15
+ Word16 *lsp // i : state of the state machine Q15
+)
+{
+ Word16 i;
+ Word32 L_tmp; // Q31
+
+ for (i = 0; i < M; i++) {
+
+ // mean = 0.84*mean
+ L_tmp = L_deposit_h(st->lsp_meanSave[i]);
+ L_tmp = L_msu(L_tmp, EXPCONST, st->lsp_meanSave[i]);
+
+ // Add 0.16 of newest LSPs to mean
+ L_tmp = L_mac(L_tmp, EXPCONST, lsp[i]);
+
+ // Save means
+ st->lsp_meanSave[i] = pv_round(L_tmp); // Q15
+ }
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void lsp_avg(
+ lsp_avgState *st, /* i/o : State struct Q15 */
+ Word16 *lsp, /* i : state of the state machine Q15 */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+)
+{
+ Word16 i;
+ Word32 L_tmp; /* Q31 */
+
+ for (i = 0; i < M; i++)
+ {
+
+ /* mean = 0.84*mean */
+ L_tmp = L_deposit_h(st->lsp_meanSave[i]);
+ L_tmp = L_msu(L_tmp, EXPCONST, st->lsp_meanSave[i], pOverflow);
+
+ /* Add 0.16 of newest LSPs to mean */
+ L_tmp = L_mac(L_tmp, EXPCONST, lsp[i], pOverflow);
+
+ /* Save means */
+ st->lsp_meanSave[i] = pv_round(L_tmp, pOverflow); /* Q15 */
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/lsp_avg.h b/media/codecs/amrnb/dec/src/lsp_avg.h
new file mode 100644
index 0000000..b289c08
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/lsp_avg.h
@@ -0,0 +1,136 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/lsp_avg.h
+
+ Date: 01/29/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Per review comments, I removed the prototype definition
+ of lsp_avg_init and lsp_avg_exit.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the lsp_avg.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef lsp_avg_h
+#define lsp_avg_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "cnst.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+#define EXPCONST 5243 /* 0.16 in Q15 */
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 lsp_meanSave[M]; /* Averaged LSPs saved for efficiency */
+ } lsp_avgState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ Word16 lsp_avg_reset(
+ lsp_avgState *state
+ );
+
+
+ void lsp_avg(
+ lsp_avgState *st, /* i/o : State struct Q15 */
+ Word16 *lsp, /* i : LSP vector Q15 */
+ Flag *pOverflow /* o : Flag set when overflow occurs */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LSP_LSF_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/ph_disp.cpp b/media/codecs/amrnb/dec/src/ph_disp.cpp
new file mode 100644
index 0000000..285465f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ph_disp.cpp
@@ -0,0 +1,898 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/ph_disp.c
+ Functions:
+ ph_disp_reset
+ ph_disp_lock
+ ph_disp_release
+ ph_disp
+
+ Date: 04/05/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changed template used to PV coding template. First attempt at
+ optimizing C code.
+
+ Description: Updated file per comments gathered from Phase 2/3 review.
+
+ Description: Clarified grouping in the equation to calculated L_temp from the
+ product of state->prevCbGain and ONFACTPLUS1 in the ph_disp
+ function.
+
+ Description: Added setting of Overflow flag in inlined code.
+
+ Description: Synchronized file with UMTS version 3.2.0. Updated coding
+ coding template. Removed unnecessary include files.
+
+ Description: Replaced basic_op.h with the header file of the math functions
+ used in the file.
+
+ Description: Removed the functions ph_disp_init and ph_disp_exit.
+ The ph_disp related structure is no longer dynamically allocated.
+
+ Description: Pass in pointer to overflow flag for EPOC compatibility.
+ Change code for ph_disp() function to reflect this. Remove
+ inclusion of ph_disp.tab. This table will now be referenced
+ externally.
+
+ Description: Optimized ph_disp() to reduce clock cycle usage. Updated
+ copyright year and removed unused files in Include section.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with defined types.
+ Added proper casting (Word32) to some left shifting operations
+
+ Description: Changed round function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the function that performs adaptive phase dispersion of
+ the excitation signal. The phase dispersion initialization, reset, and
+ exit functions are included in this file, as well as, the phase dispersion
+ lock and release functions.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "ph_disp.h"
+#include "typedef.h"
+#include "basic_op.h"
+#include "cnst.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ph_disp_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type ph_dispState
+
+ Outputs:
+ Structure pointed to by state is initialized to zeros
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function resets the variables used by the phase dispersion function.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ph_disp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int ph_disp_reset (ph_dispState *state)
+{
+ Word16 i;
+
+ if (state == (ph_dispState *) NULL){
+ fprint(stderr, "ph_disp_reset: invalid parameter\n");
+ return -1;
+ }
+ for (i=0; i<PHDGAINMEMSIZE; i++)
+ {
+ state->gainMem[i] = 0;
+ }
+ state->prevState = 0;
+ state->prevCbGain = 0;
+ state->lockFull = 0;
+ state->onset = 0; // assume no onset in start
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 ph_disp_reset(ph_dispState *state)
+{
+ Word16 i;
+
+ if (state == (ph_dispState *) NULL)
+ {
+ /* fprint(stderr, "ph_disp_reset: invalid parameter\n"); */
+ return(-1);
+ }
+ for (i = 0; i < PHDGAINMEMSIZE; i++)
+ {
+ state->gainMem[i] = 0;
+ }
+ state->prevState = 0;
+ state->prevCbGain = 0;
+ state->lockFull = 0;
+ state->onset = 0; /* assume no onset in start */
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ph_disp_lock
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type ph_dispState
+
+ Outputs:
+ lockFull field of the structure pointed to by state is set to 1
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function sets the lockFull flag to indicate a lock condition.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ph_disp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void ph_disp_lock (ph_dispState *state)
+{
+ state->lockFull = 1;
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void ph_disp_lock(ph_dispState *state)
+{
+ state->lockFull = 1;
+
+ return;
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ph_disp_release
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type ph_dispState
+
+ Outputs:
+ lockFull field of the structure pointed to by state is set to 0
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function clears the lockFull flag to indicate an unlocked state.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ph_disp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void ph_disp_release (ph_dispState *state)
+{
+ state->lockFull = 0;
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void ph_disp_release(ph_dispState *state)
+{
+ state->lockFull = 0;
+
+ return;
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: ph_disp
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type ph_dispState
+ mode = codec mode (enum Mode)
+ x = LTP excitation signal buffer (Word16)
+ cbGain = codebook gain (Word16)
+ ltpGain = LTP gain (Word16)
+ inno = innovation buffer (Word16)
+ pitch_fac = pitch factor used to scale the LTP excitation (Word16)
+ tmp_shift = shift factor applied to sum of scaled LTP excitation and
+ innovation before rounding (Word16)
+ pOverflow = pointer to overflow indicator (Flag)
+
+ Outputs:
+ structure pointed to by state contains the updated gainMem array,
+ prevState, prevCbGain, and onset fields
+ x buffer contains the new excitation signal
+ inno buffer contains the new innovation signal
+ pOverflow -> 1 if there is overflow
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs adaptive phase dispersion, i.e., forming of total
+ excitation for the synthesis part of the decoder.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ ph_disp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+void ph_disp (
+ ph_dispState *state, // i/o : State struct
+ enum Mode mode, // i : codec mode
+ Word16 x[], // i/o Q0 : in: LTP excitation signal
+ // out: total excitation signal
+ Word16 cbGain, // i Q1 : Codebook gain
+ Word16 ltpGain, // i Q14 : LTP gain
+ Word16 inno[], // i/o Q13 : Innovation vector (Q12 for 12.2)
+ Word16 pitch_fac, // i Q14 : pitch factor used to scale the
+ LTP excitation (Q13 for 12.2)
+ Word16 tmp_shift // i Q0 : shift factor applied to sum of
+ scaled LTP ex & innov. before
+ rounding
+)
+{
+ Word16 i, i1;
+ Word16 tmp1;
+ Word32 L_temp;
+ Word16 impNr; // indicator for amount of disp./filter used
+
+ Word16 inno_sav[L_SUBFR];
+ Word16 ps_poss[L_SUBFR];
+ Word16 j, nze, nPulse, ppos;
+ const Word16 *ph_imp; // Pointer to phase dispersion filter
+
+ // Update LTP gain memory
+ for (i = PHDGAINMEMSIZE-1; i > 0; i--)
+ {
+ state->gainMem[i] = state->gainMem[i-1];
+ }
+ state->gainMem[0] = ltpGain;
+
+ // basic adaption of phase dispersion
+ if (sub(ltpGain, PHDTHR2LTP) < 0) { // if (ltpGain < 0.9)
+ if (sub(ltpGain, PHDTHR1LTP) > 0)
+ { // if (ltpGain > 0.6
+ impNr = 1; // medium dispersion
+ }
+ else
+ {
+ impNr = 0; // maximum dispersion
+ }
+ }
+ else
+ {
+ impNr = 2; // no dispersion
+ }
+
+ // onset indicator
+ // onset = (cbGain > onFact * cbGainMem[0])
+ tmp1 = pv_round(L_shl(L_mult(state->prevCbGain, ONFACTPLUS1), 2));
+ if (sub(cbGain, tmp1) > 0)
+ {
+ state->onset = ONLENGTH;
+ }
+ else
+ {
+ if (state->onset > 0)
+ {
+ state->onset = sub (state->onset, 1);
+ }
+ }
+
+ // if not onset, check ltpGain buffer and use max phase dispersion if
+ half or more of the ltpGain-parameters say so
+ if (state->onset == 0)
+ {
+ // Check LTP gain memory and set filter accordingly
+ i1 = 0;
+ for (i = 0; i < PHDGAINMEMSIZE; i++)
+ {
+ if (sub(state->gainMem[i], PHDTHR1LTP) < 0)
+ {
+ i1 = add (i1, 1);
+ }
+ }
+ if (sub(i1, 2) > 0)
+ {
+ impNr = 0;
+ }
+
+ }
+ // Restrict decrease in phase dispersion to one step if not onset
+ if ((sub(impNr, add(state->prevState, 1)) > 0) && (state->onset == 0))
+ {
+ impNr = sub (impNr, 1);
+ }
+ // if onset, use one step less phase dispersion
+ if((sub(impNr, 2) < 0) && (state->onset > 0))
+ {
+ impNr = add (impNr, 1);
+ }
+
+ // disable for very low levels
+ if(sub(cbGain, 10) < 0)
+ {
+ impNr = 2;
+ }
+
+ if(sub(state->lockFull, 1) == 0)
+ {
+ impNr = 0;
+ }
+
+ // update static memory
+ state->prevState = impNr;
+ state->prevCbGain = cbGain;
+
+ // do phase dispersion for all modes but 12.2 and 7.4;
+ // don't modify the innovation if impNr >=2 (= no phase disp)
+ if (sub(mode, MR122) != 0 &&
+ sub(mode, MR102) != 0 &&
+ sub(mode, MR74) != 0 &&
+ sub(impNr, 2) < 0)
+ {
+ // track pulse positions, save innovation,
+ and initialize new innovation
+ nze = 0;
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ if (inno[i] != 0)
+ {
+ ps_poss[nze] = i;
+ nze = add (nze, 1);
+ }
+ inno_sav[i] = inno[i];
+ inno[i] = 0;
+ }
+ // Choose filter corresponding to codec mode and dispersion criterium
+ if (sub (mode, MR795) == 0)
+ {
+ if (impNr == 0)
+ {
+ ph_imp = ph_imp_low_MR795;
+ }
+ else
+ {
+ ph_imp = ph_imp_mid_MR795;
+ }
+ }
+ else
+ {
+ if (impNr == 0)
+ {
+ ph_imp = ph_imp_low;
+ }
+ else
+ {
+ ph_imp = ph_imp_mid;
+ }
+ }
+
+ // Do phase dispersion of innovation
+ for (nPulse = 0; nPulse < nze; nPulse++)
+ {
+ ppos = ps_poss[nPulse];
+
+ // circular convolution with impulse response
+ j = 0;
+ for (i = ppos; i < L_SUBFR; i++)
+ {
+ // inno[i1] += inno_sav[ppos] * ph_imp[i1-ppos]
+ tmp1 = mult(inno_sav[ppos], ph_imp[j++]);
+ inno[i] = add(inno[i], tmp1);
+ }
+
+ for (i = 0; i < ppos; i++)
+ {
+ // inno[i] += inno_sav[ppos] * ph_imp[L_SUBFR-ppos+i]
+ tmp1 = mult(inno_sav[ppos], ph_imp[j++]);
+ inno[i] = add(inno[i], tmp1);
+ }
+ }
+ }
+
+ // compute total excitation for synthesis part of decoder
+ // (using modified innovation if phase dispersion is active)
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ // x[i] = gain_pit*x[i] + cbGain*code[i];
+ L_temp = L_mult ( x[i], pitch_fac);
+ // 12.2: Q0 * Q13
+ // 7.4: Q0 * Q14
+ L_temp = L_mac (L_temp, inno[i], cbGain);
+ // 12.2: Q12 * Q1
+ // 7.4: Q13 * Q1
+ L_temp = L_shl (L_temp, tmp_shift); // Q16
+ x[i] = pv_round (L_temp);
+ }
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void ph_disp(
+ ph_dispState *state, /* i/o : State struct */
+ enum Mode mode, /* i : codec mode */
+ Word16 x[], /* i/o Q0 : in: LTP excitation signal */
+ /* out: total excitation signal */
+ Word16 cbGain, /* i Q1 : Codebook gain */
+ Word16 ltpGain, /* i Q14 : LTP gain */
+ Word16 inno[], /* i/o Q13 : Innovation vector (Q12 for 12.2) */
+ Word16 pitch_fac, /* i Q14 : pitch factor used to scale the
+ LTP excitation (Q13 for 12.2) */
+ Word16 tmp_shift, /* i Q0 : shift factor applied to sum of
+ scaled LTP ex & innov. before
+ rounding */
+ Flag *pOverflow /* i/o : oveflow indicator */
+)
+{
+ Word16 i, i1;
+ Word16 tmp1;
+ Word32 L_temp;
+ Word32 L_temp2;
+ Word16 impNr; /* indicator for amount of disp./filter used */
+
+ Word16 inno_sav[L_SUBFR];
+ Word16 ps_poss[L_SUBFR];
+ Word16 nze, nPulse;
+ Word16 ppos;
+ const Word16 *ph_imp; /* Pointer to phase dispersion filter */
+
+ Word16 *p_inno;
+ Word16 *p_inno_sav;
+ Word16 *p_x;
+ const Word16 *p_ph_imp;
+ Word16 c_inno_sav;
+
+ /* Update LTP gain memory */
+ /* Unrolled FOR loop below since PHDGAINMEMSIZE is assumed to stay */
+ /* the same. */
+ /* for (i = PHDGAINMEMSIZE-1; i > 0; i--) */
+ /* { */
+ /* state->gainMem[i] = state->gainMem[i-1]; */
+ /* } */
+ state->gainMem[4] = state->gainMem[3];
+ state->gainMem[3] = state->gainMem[2];
+ state->gainMem[2] = state->gainMem[1];
+ state->gainMem[1] = state->gainMem[0];
+ state->gainMem[0] = ltpGain;
+
+ /* basic adaption of phase dispersion */
+
+ if (ltpGain < PHDTHR2LTP) /* if (ltpGain < 0.9) */
+ {
+ if (ltpGain > PHDTHR1LTP)
+ { /* if (ltpGain > 0.6 */
+ impNr = 1; /* medium dispersion */
+ }
+ else
+ {
+ impNr = 0; /* maximum dispersion */
+ }
+ }
+ else
+ {
+ impNr = 2; /* no dispersion */
+ }
+
+ /* onset indicator */
+ /* onset = (cbGain > onFact * cbGainMem[0]) */
+
+ L_temp = ((Word32) state->prevCbGain * ONFACTPLUS1) << 1;
+
+ /* (L_temp << 2) calculation with saturation check */
+ if (L_temp > (Word32) 0X1fffffffL)
+ {
+ *pOverflow = 1;
+ L_temp = MAX_32;
+ }
+ else if (L_temp < (Word32) 0xe0000000L)
+ {
+ *pOverflow = 1;
+ L_temp = MIN_32;
+ }
+ else
+ {
+ L_temp <<= 2;
+ }
+
+ tmp1 = pv_round(L_temp, pOverflow);
+
+ if (cbGain > tmp1)
+ {
+ state->onset = ONLENGTH;
+ }
+ else
+ {
+
+ if (state->onset > 0)
+ {
+ state->onset -= 1;
+ }
+ }
+
+ /* if not onset, check ltpGain buffer and use max phase dispersion if
+ half or more of the ltpGain-parameters say so */
+ if (state->onset == 0)
+ {
+ /* Check LTP gain memory and set filter accordingly */
+ i1 = 0;
+ for (i = 0; i < PHDGAINMEMSIZE; i++)
+ {
+ if (state->gainMem[i] < PHDTHR1LTP)
+ {
+ i1 += 1;
+ }
+ }
+
+ if (i1 > 2)
+ {
+ impNr = 0;
+ }
+ }
+ /* Restrict decrease in phase dispersion to one step if not onset */
+ if ((impNr > ((state->prevState) + 1)) && (state->onset == 0))
+ {
+ impNr -= 1;
+ }
+
+ /* if onset, use one step less phase dispersion */
+ if ((impNr < 2) && (state->onset > 0))
+ {
+ impNr += 1;
+ }
+
+ /* disable for very low levels */
+ if (cbGain < 10)
+ {
+ impNr = 2;
+ }
+
+ if (state->lockFull == 1)
+ {
+ impNr = 0;
+ }
+
+ /* update static memory */
+ state->prevState = impNr;
+ state->prevCbGain = cbGain;
+
+ /* do phase dispersion for all modes but 12.2 and 7.4;
+ don't modify the innovation if impNr >=2 (= no phase disp) */
+ if ((mode != MR122) && (mode != MR102) && (mode != MR74) && (impNr < 2))
+ {
+ /* track pulse positions, save innovation,
+ and initialize new innovation */
+ nze = 0;
+ p_inno = &inno[0];
+ p_inno_sav = &inno_sav[0];
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ if (*(p_inno) != 0)
+ {
+ ps_poss[nze] = i;
+ nze += 1;
+ }
+ *(p_inno_sav++) = *(p_inno);
+ *(p_inno++) = 0;
+ }
+
+ /* Choose filter corresponding to codec mode and dispersion criterium */
+ if (mode == MR795)
+ {
+ if (impNr == 0)
+ {
+ ph_imp = ph_imp_low_MR795;
+ }
+ else
+ {
+ ph_imp = ph_imp_mid_MR795;
+ }
+ }
+ else
+ {
+ if (impNr == 0)
+ {
+ ph_imp = ph_imp_low;
+ }
+ else
+ {
+ ph_imp = ph_imp_mid;
+ }
+ }
+
+ /* Do phase dispersion of innovation */
+ for (nPulse = 0; nPulse < nze; nPulse++)
+ {
+ ppos = ps_poss[nPulse];
+
+ /* circular convolution with impulse response */
+ c_inno_sav = inno_sav[ppos];
+ p_inno = &inno[ppos];
+ p_ph_imp = ph_imp;
+
+ for (i = ppos; i < L_SUBFR; i++)
+ {
+ /* inno[i1] += inno_sav[ppos] * ph_imp[i1-ppos] */
+ L_temp = ((Word32) c_inno_sav * *(p_ph_imp++)) >> 15;
+ tmp1 = (Word16) L_temp;
+ *(p_inno) = add(*(p_inno), tmp1, pOverflow);
+ p_inno += 1;
+ }
+
+ p_inno = &inno[0];
+
+ for (i = 0; i < ppos; i++)
+ {
+ /* inno[i] += inno_sav[ppos] * ph_imp[L_SUBFR-ppos+i] */
+ L_temp = ((Word32) c_inno_sav * *(p_ph_imp++)) >> 15;
+ tmp1 = (Word16) L_temp;
+ *(p_inno) = add(*(p_inno), tmp1, pOverflow);
+ p_inno += 1;
+ }
+ }
+ }
+
+ /* compute total excitation for synthesis part of decoder
+ (using modified innovation if phase dispersion is active) */
+ p_inno = &inno[0];
+ p_x = &x[0];
+
+ for (i = 0; i < L_SUBFR; i++)
+ {
+ /* x[i] = gain_pit*x[i] + cbGain*code[i]; */
+ L_temp = L_mult(x[i], pitch_fac, pOverflow);
+ /* 12.2: Q0 * Q13 */
+ /* 7.4: Q0 * Q14 */
+ L_temp2 = ((Word32) * (p_inno++) * cbGain) << 1;
+ L_temp = L_add(L_temp, L_temp2, pOverflow);
+ /* 12.2: Q12 * Q1 */
+ /* 7.4: Q13 * Q1 */
+ L_temp = L_shl(L_temp, tmp_shift, pOverflow); /* Q16 */
+ *(p_x++) = pv_round(L_temp, pOverflow);
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/ph_disp.h b/media/codecs/amrnb/dec/src/ph_disp.h
new file mode 100644
index 0000000..58e2e4f
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/ph_disp.h
@@ -0,0 +1,192 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/ph_disp.h
+
+
+ Date: 08/11/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated template. Updated function prototype declaration for
+ ph_disp(). Included extern declaration for ph_imp_low_MR795 and
+ ph_imp_mid_MR795
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the Phase dispersion of excitation signal ph_disp() function.
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef PH_DISP_H
+#define PH_DISP_H "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "mode.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+#define PHDGAINMEMSIZE 5
+#define PHDTHR1LTP 9830 /* 0.6 in Q14 */
+#define PHDTHR2LTP 14746 /* 0.9 in Q14 */
+#define ONFACTPLUS1 16384 /* 2.0 in Q13 */
+#define ONLENGTH 2
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+ extern Word16 ph_imp_low_MR795[];
+ extern Word16 ph_imp_mid_MR795[];
+ extern Word16 ph_imp_low[];
+ extern Word16 ph_imp_mid[];
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 gainMem[PHDGAINMEMSIZE];
+ Word16 prevState;
+ Word16 prevCbGain;
+ Word16 lockFull;
+ Word16 onset;
+ } ph_dispState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: ph_disp_reset
+ ; Purpose: Initializes state memory
+ ;
+ ----------------------------------------------------------------------------*/
+ Word16 ph_disp_reset(ph_dispState *state);
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: ph_disp_exit
+ ; Purpose: The memory used for state memory is freed
+ ;
+ ----------------------------------------------------------------------------*/
+ void ph_disp_exit(ph_dispState **state);
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: ph_disp_lock
+ ; Purpose: mark phase dispersion as locked in state struct
+ ;
+ ----------------------------------------------------------------------------*/
+ void ph_disp_lock(ph_dispState *state);
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: ph_disp_release
+ ; Purpose: mark phase dispersion as unlocked in state struct
+ ;
+ ----------------------------------------------------------------------------*/
+
+ void ph_disp_release(ph_dispState *state);
+
+ /*----------------------------------------------------------------------------
+ ;
+ ; Function: ph_disp
+ ; Purpose: perform phase dispersion according to the specified codec
+ ; mode and computes total excitation for synthesis part
+ ; if decoder
+ ;
+ ----------------------------------------------------------------------------*/
+
+ void ph_disp(
+ ph_dispState *state, /* i/o : State struct */
+ enum Mode mode, /* i : codec mode */
+ Word16 x[], /* i/o Q0 : in: LTP excitation signal */
+ /* out: total excitation signal */
+ Word16 cbGain, /* i Q1 : Codebook gain */
+ Word16 ltpGain, /* i Q14 : LTP gain */
+ Word16 inno[], /* i/o Q13 : Innovation vector (Q12 for 12.2) */
+ Word16 pitch_fac, /* i Q14 : pitch factor used to scale the
+ LTP excitation (Q13 for 12.2) */
+ Word16 tmp_shift, /* i Q0 : shift factor applied to sum of
+ scaled LTP ex & innov. before
+ rounding */
+ Flag *pOverflow /* i/o : oveflow indicator */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PH_DISP_H_ */
+
diff --git a/media/codecs/amrnb/dec/src/post_pro.cpp b/media/codecs/amrnb/dec/src/post_pro.cpp
new file mode 100644
index 0000000..8201e54
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/post_pro.cpp
@@ -0,0 +1,395 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/post_pro.c
+ Functions:
+ Post_Process_reset
+ Post_Process
+
+ Date: 04/03/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Updated template used to PV coding template. First attempt at
+ optimizing C code.
+
+ Description: Deleted variables listed in the Local Stores Needed/Modified
+ sections. Optimized the "else" portion of the first "if"
+ statement in Post_Process function.
+
+ Description: Made grouping more explicit in the calculation of
+ signal[i] << 1 in the Post_Process function.
+
+ Description: Added setting of Overflow flag in inlined code.
+
+ Description: Synchronized file with UMTS version 3.2.0. Updated coding
+ template. Removed unnecessary include files.
+
+ Description: Replaced basic_op.h with the header file of the math functions
+ used in the file.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Updated copyright year.
+ 2. Fixed typecasting issue with TI C compiler.
+ 3. Used short-hand notation for math operations, e.g., "+=",
+ in the code.
+
+ Description: Removed the functions post_pro_init and post_pro_exit.
+ The post_pro related structure is no longer dynamically allocated.
+
+ Description: Added pOverflow as a passed in variable as per changes needed
+ for the EPOC release.
+
+ Description: Optimized file to reduce clock cycle usage. Updated copyright
+ year and removed unused files in Include section.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Changed round function name to pv_round to avoid conflict with
+ round function in C standard library.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the function that performs post-processing on the output
+ speech. Post-processing include filtering the output speech through a second
+ order high pass filter with cutoff frequency of 60 Hz, and up-scaling the
+ output speech by a factor of 2. In addition to the post-processing function
+ itself, a post-processing initialization function, post-processing reset
+ function, and post-processing exit function are also included in this file.
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "post_pro.h"
+#include "typedef.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/* filter coefficients (fc = 60 Hz) */
+static const Word16 b[3] = {7699, -15398, 7699};
+static const Word16 a[3] = {8192, 15836, -7667};
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Post_Process_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to a structure of type Post_ProcessState
+
+ Outputs:
+ structure pointed to by state will have all its fields initialized
+ to zero
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function initializes state memory to zero.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ post_pro.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Post_Process_reset (Post_ProcessState *state)
+{
+ if (state == (Post_ProcessState *) NULL){
+ fprint(stderr, "Post_Process_reset: invalid parameter\n");
+ return -1;
+ }
+
+ state->y2_hi = 0;
+ state->y2_lo = 0;
+ state->y1_hi = 0;
+ state->y1_lo = 0;
+ state->x0 = 0;
+ state->x1 = 0;
+
+ return 0;
+}
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Post_Process_reset(Post_ProcessState *state)
+{
+ if (state == (Post_ProcessState *) NULL)
+ {
+ /* fprint(stderr, "Post_Process_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ state->y2_hi = 0;
+ state->y2_lo = 0;
+ state->y1_hi = 0;
+ state->y1_lo = 0;
+ state->x0 = 0;
+ state->x1 = 0;
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Post_Process
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type Post_ProcessState
+ signal = buffer containing the input signal (Word16)
+ lg = length of the input signal (Word16)
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ structure pointed to by st contains new filter input and output values
+ signal buffer contains the HP filtered and up-scaled input signal
+ pOverflow points to 1 if overflow occurs in the math functions called
+ else it points to 0.
+
+ Returns:
+ return_value = 0 (int)
+
+ Global Variables Used:
+ a = buffer containing filter coefficients
+ b = buffer containing filter coefficients
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs post-processing on the output speech signal. First,
+ the output speech goes through a second order high pass filter with a
+ cutoff frequency of 60 Hz. Then, the filtered output speech is multiplied
+ by a factor of 2. The algorithm implemented follows the following difference
+ equation:
+
+ y[i] = b[0]*x[i]*2 + b[1]*x[i-1]*2 + b[2]*x[i-2]*2 + a[1]*y[i-1] + a[2]*y[i-2];
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ post_pro.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Post_Process (
+ Post_ProcessState *st, //i/o : post process state
+ Word16 signal[], //i/o : signal
+ Word16 lg //i : length of signal
+ )
+{
+ Word16 i, x2;
+ Word32 L_tmp;
+
+ for (i = 0; i < lg; i++)
+ {
+ x2 = st->x1;
+ st->x1 = st->x0;
+ st->x0 = signal[i];
+
+ // y[i] = b[0]*x[i]*2 + b[1]*x[i-1]*2 + b140[2]*x[i-2]/2
+ // + a[1]*y[i-1] + a[2] * y[i-2];
+
+ L_tmp = Mpy_32_16 (st->y1_hi, st->y1_lo, a[1]);
+ L_tmp = L_add (L_tmp, Mpy_32_16 (st->y2_hi, st->y2_lo, a[2]));
+ L_tmp = L_mac (L_tmp, st->x0, b[0]);
+ L_tmp = L_mac (L_tmp, st->x1, b[1]);
+ L_tmp = L_mac (L_tmp, x2, b[2]);
+ L_tmp = L_shl (L_tmp, 2);
+
+ //Multiplication by two of output speech with saturation.
+ signal[i] = pv_round(L_shl(L_tmp, 1));
+
+ st->y2_hi = st->y1_hi;
+ st->y2_lo = st->y1_lo;
+ L_Extract (L_tmp, &st->y1_hi, &st->y1_lo);
+ }
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void Post_Process(
+ Post_ProcessState *st, /* i/o : post process state */
+ Word16 signal[], /* i/o : signal */
+ Word16 lg, /* i : length of signal */
+ Flag *pOverflow
+)
+{
+ Word16 i, x2;
+ Word32 L_tmp;
+
+ Word16 *p_signal;
+ Word16 c_a1 = a[1];
+ Word16 c_a2 = a[2];
+ Word16 c_b0 = b[0];
+ Word16 c_b1 = b[1];
+ Word16 c_b2 = b[2];
+
+ p_signal = &signal[0];
+
+ for (i = 0; i < lg; i++)
+ {
+ x2 = st->x1;
+ st->x1 = st->x0;
+ st->x0 = *(p_signal);
+
+ /* y[i] = b[0]*x[i]*2 + b[1]*x[i-1]*2 + b140[2]*x[i-2]/2 */
+ /* + a[1]*y[i-1] + a[2] * y[i-2]; */
+
+ L_tmp = ((Word32) st->y1_hi) * c_a1;
+ L_tmp += (((Word32) st->y1_lo) * c_a1) >> 15;
+ L_tmp += ((Word32) st->y2_hi) * c_a2;
+ L_tmp += (((Word32) st->y2_lo) * c_a2) >> 15;
+ L_tmp += ((Word32) st->x0) * c_b0;
+ L_tmp += ((Word32) st->x1) * c_b1;
+ L_tmp += ((Word32) x2) * c_b2;
+ L_tmp = L_shl(L_tmp, 3, pOverflow);
+
+
+ /* Multiplication by two of output speech with saturation. */
+
+ *(p_signal++) = pv_round(L_shl(L_tmp, 1, pOverflow), pOverflow);
+
+ st->y2_hi = st->y1_hi;
+ st->y2_lo = st->y1_lo;
+
+ st->y1_hi = (Word16)(L_tmp >> 16);
+ st->y1_lo = (Word16)((L_tmp >> 1) - ((Word32) st->y1_hi << 15));
+
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/post_pro.h b/media/codecs/amrnb/dec/src/post_pro.h
new file mode 100644
index 0000000..85e5888
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/post_pro.h
@@ -0,0 +1,140 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/post_pro.h
+
+ Date: 02/04/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : post_pro.h
+ Purpose : Postprocessing of output speech.
+
+ - 2nd order high pass filtering with cut
+ off frequency at 60 Hz.
+ - Multiplication of output by two.
+------------------------------------------------------------------------------
+*/
+
+#ifndef _POST_PRO_H_
+#define _POST_PRO_H_
+#define post_pro_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 y2_hi;
+ Word16 y2_lo;
+ Word16 y1_hi;
+ Word16 y1_lo;
+ Word16 x0;
+ Word16 x1;
+ } Post_ProcessState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+
+ Word16 Post_Process_reset(Post_ProcessState *st);
+ /* reset of Post processing state (i.e. set state memory to zero)
+ returns 0 on success
+ */
+ void Post_Process_exit(Post_ProcessState **st);
+ /* de-initialize Post processing state (i.e. free status struct)
+ stores NULL in *st
+ */
+
+ void Post_Process(
+ Post_ProcessState *st, /* i/o : post process state */
+ Word16 signal[], /* i/o : signal */
+ Word16 lg, /* i : lenght of signal */
+ Flag *pOverflow
+ );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _POST_PRO_H_ */
+
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/preemph.cpp b/media/codecs/amrnb/dec/src/preemph.cpp
new file mode 100644
index 0000000..9864325
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/preemph.cpp
@@ -0,0 +1,272 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/preemph.c
+ Functions:
+
+ Date: 02/04/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Removed the functions preemphasis_init and preemphasis_exit.
+ The preemphasis related structure is no longer dynamically allocated.
+ Placed file in the appropriate PV Software Template format.
+
+ Description: Changed to accept the pOverflow flag for EPOC compatibility.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ Purpose : Preemphasis filtering
+ Description : Filtering through 1 - g z^-1
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "preemph.h"
+#include "typedef.h"
+#include "basic_op.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: preemphasis_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st -- double pointer to preemphasisState
+
+ Outputs:
+ st -- double ponter to preemphasisState
+
+ Returns:
+ -1 if an error occurs
+ 0 if OK
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Initializes state memory to zero
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ preemph.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 preemphasis_reset(preemphasisState *state)
+{
+ if (state == (preemphasisState *) NULL)
+ {
+ /* fprintf(stderr, "preemphasis_reset: invalid parameter\n"); */
+ return -1;
+ }
+
+ state->mem_pre = 0;
+
+ return 0;
+}
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: preemphasis
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st -- Pointer to preemphasisState -- preemphasis filter state
+ signal -- array of type Word16 -- input signal overwritten by the output
+ g -- Word16 -- preemphasis coefficient
+ L -- Word16 -- size of filtering
+
+ Outputs:
+ st -- Pointer to preemphasisState -- preemphasis filter state
+ signal -- array of type Word16 -- input signal overwritten by the output
+ pOverflow -- pointer to type Flag -- overflow indicator
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ Filtering through 1 - g z^-1
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ preemph.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+
+void preemphasis(
+ preemphasisState *st, /* (i/o) : preemphasis filter state */
+ Word16 *signal, /* (i/o) : input signal overwritten by the output */
+ Word16 g, /* (i) : preemphasis coefficient */
+ Word16 L, /* (i) : size of filtering */
+ Flag *pOverflow /* (o) : overflow indicator */
+)
+{
+ Word16 *p1;
+ Word16 *p2;
+ Word16 temp;
+ Word16 temp2;
+ Word16 i;
+
+ p1 = signal + L - 1;
+ p2 = p1 - 1;
+ temp = *p1;
+
+ for (i = 0; i <= L - 2; i++)
+ {
+ temp2 = mult(g, *(p2--), pOverflow);
+ *p1 = sub(*p1, temp2, pOverflow);
+
+ p1--;
+ }
+
+ temp2 = mult(g, st->mem_pre, pOverflow);
+
+ *p1 = sub(*p1, temp2, pOverflow);
+
+ st->mem_pre = temp;
+
+ return;
+}
+
+
+
diff --git a/media/codecs/amrnb/dec/src/preemph.h b/media/codecs/amrnb/dec/src/preemph.h
new file mode 100644
index 0000000..20bab71
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/preemph.h
@@ -0,0 +1,140 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/preemph.h
+
+ Date: 02/05/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Placed header file in the proper template format. Added
+ parameter pOverflow for the basic math ops.
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the file, preemph.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef preemph_h
+#define preemph_h "$Id $"
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 mem_pre; /* filter state */
+ } preemphasisState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+
+ Word16 preemphasis_reset(preemphasisState *st);
+ /* reset of preemphasis filter (i.e. set state memory to zero)
+ returns 0 on success
+ */
+ void preemphasis_exit(preemphasisState **st);
+ /* de-initialize preemphasis filter (i.e. free status struct)
+ stores NULL in *st
+ */
+
+ void preemphasis(
+ preemphasisState *st, /* (i/o): preemphasis filter state */
+ Word16 *signal, /* (i/o): input signal overwritten by the output */
+ Word16 g, /* (i) : preemphasis coefficient */
+ Word16 L, /* (i) : size of filtering */
+ Flag *pOverflow /* (o) : overflow indicator */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* preemph_H_ */
+
+
diff --git a/media/codecs/amrnb/dec/src/pstfilt.cpp b/media/codecs/amrnb/dec/src/pstfilt.cpp
new file mode 100644
index 0000000..39e01a2
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/pstfilt.cpp
@@ -0,0 +1,578 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/pstfilt.c
+ Functions:
+ Post_Filter_reset
+ Post_Filter
+
+ Date: 04/14/2000
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changed template used to PV coding template. First attempt at
+ optimizing C code.
+
+ Description: Updated file per comments gathered from Phase 2/3 review.
+
+ Description: Added setting of Overflow flag in inlined code.
+
+ Description: Synchronized file with UMTS version 3.2.0. Updated coding
+ template. Removed unnecessary include files.
+
+ Description: Replaced basic_op.h with the header file of the math functions
+ used in the file.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Updated copyright year.
+ 2. Modified FOR loops to count down.
+ 3. Fixed typecasting issue with TI C compiler.
+ 4. Added "break" statement after overflow condition occurs.
+
+ Description: Removed the functions pstfilt_init and pstfilt_exit.
+ The pst_filt related structure is no longer dynamically allocated.
+
+ Description: Modified code for EPOC changes where pOverflow is passed in
+ rather than allowing overflow to be a global variable.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with defined types.
+ Added proper casting (Word32) to some left shifting operations
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the function that performs adaptive post-filtering on the
+ synthesized speech. It also contains the functions that initialize, reset,
+ and exit the post-filtering function.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <string.h>
+
+#include "pstfilt.h"
+#include "typedef.h"
+#include "mode.h"
+#include "basicop_malloc.h"
+#include "basic_op.h"
+#include "weight_a.h"
+#include "residu.h"
+#include "copy.h"
+#include "syn_filt.h"
+#include "preemph.h"
+#include "cnst.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define L_H 22 /* size of truncated impulse response of A(z/g1)/A(z/g2) */
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/* Spectral expansion factors */
+static const Word16 gamma3_MR122[M] =
+{
+ 22938, 16057, 11240, 7868, 5508,
+ 3856, 2699, 1889, 1322, 925
+};
+
+static const Word16 gamma3[M] =
+{
+ 18022, 9912, 5451, 2998, 1649, 907, 499, 274, 151, 83
+};
+
+static const Word16 gamma4_MR122[M] =
+{
+ 24576, 18432, 13824, 10368, 7776,
+ 5832, 4374, 3281, 2461, 1846
+};
+
+static const Word16 gamma4[M] =
+{
+ 22938, 16057, 11240, 7868, 5508, 3856, 2699, 1889, 1322, 925
+};
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL VARIABLES REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Post_Filter_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to structure of type Post_FilterState
+
+ Outputs:
+ fields of the structure pointed to by state is initialized to zero
+
+ Returns:
+ return_value = 0, if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function initializes the state memory used by the Post_Filter function
+ to zero.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ pstfilt.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Post_Filter_reset (Post_FilterState *state)
+{
+ if (state == (Post_FilterState *) NULL){
+ fprintf(stderr, "Post_Filter_reset: invalid parameter\n");
+ return -1;
+ }
+
+ Set_zero (state->mem_syn_pst, M);
+ Set_zero (state->res2, L_SUBFR);
+ Set_zero (state->synth_buf, L_FRAME + M);
+ agc_reset(state->agc_state);
+ preemphasis_reset(state->preemph_state);
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 Post_Filter_reset(Post_FilterState *state)
+{
+ if (state == (Post_FilterState *) NULL)
+ {
+ /*fprintf(stderr, "Post_Filter_reset: invalid parameter\n"); */
+ return(-1);
+ }
+
+ memset(state->mem_syn_pst, 0, sizeof(Word16)*M);
+ memset(state->res2, 0, sizeof(Word16)*L_SUBFR);
+ memset(state->synth_buf, 0, sizeof(Word16)*(L_FRAME + M));
+ agc_reset(&(state->agc_state));
+ preemphasis_reset(&(state->preemph_state));
+
+ return(0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Post_Filter
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to a structure of type Post_FilterState
+ mode = AMR mode
+ syn = pointer to a buffer containing synthesized speech; upon
+ exiting this function, it will contain the post-filtered
+ synthesized speech
+ Az_4 = pointer to the interpolated LPC parameters for all subframes
+ pOverflow = pointer to overflow indicator of type Flag
+
+ Outputs:
+ fields of the structure pointed to by st contains the updated field
+ values
+ syn buffer contains the post-filtered synthesized speech
+ pOverflow = 1 if overflow occurrs in the math functions called else
+ it is zero.
+
+ Returns:
+ return_value = 0 (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs the post-filtering on the synthesized speech. The
+ post-filtering process is described as follows:
+ (1) inverse filtering of syn[] through A(z/0.7) to get res2[]
+ (2) tilt compensation filtering; 1 - MU*k*z^-1
+ (3) synthesis filtering through 1/A(z/0.75)
+ (4) adaptive gain control
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ pstfilt.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Post_Filter (
+ Post_FilterState *st, // i/o : post filter states
+ enum Mode mode, // i : AMR mode
+ Word16 *syn, // i/o : synthesis speech (postfiltered is output)
+ Word16 *Az_4 // i : interpolated LPC parameters in all subfr.
+)
+{
+ *-------------------------------------------------------------------*
+ * Declaration of parameters *
+ *-------------------------------------------------------------------*
+
+ Word16 Ap3[MP1], Ap4[MP1]; // bandwidth expanded LP parameters
+ Word16 *Az; // pointer to Az_4:
+ // LPC parameters in each subframe
+ Word16 i_subfr; // index for beginning of subframe
+ Word16 h[L_H];
+
+ Word16 i;
+ Word16 temp1, temp2;
+ Word32 L_tmp;
+ Word16 *syn_work = &st->synth_buf[M];
+
+
+ *-----------------------------------------------------*
+ * Post filtering *
+ *-----------------------------------------------------*
+
+ Copy (syn, syn_work , L_FRAME);
+
+ Az = Az_4;
+
+ for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
+ {
+ // Find weighted filter coefficients Ap3[] and ap[4]
+
+ if (sub(mode, MR122) == 0 || sub(mode, MR102) == 0)
+ {
+ Weight_Ai (Az, gamma3_MR122, Ap3);
+ Weight_Ai (Az, gamma4_MR122, Ap4);
+ }
+ else
+ {
+ Weight_Ai (Az, gamma3, Ap3);
+ Weight_Ai (Az, gamma4, Ap4);
+ }
+
+ // filtering of synthesis speech by A(z/0.7) to find res2[]
+
+ Residu (Ap3, &syn_work[i_subfr], st->res2, L_SUBFR);
+
+ // tilt compensation filter
+
+ // impulse response of A(z/0.7)/A(z/0.75)
+
+ Copy (Ap3, h, M + 1);
+ Set_zero (&h[M + 1], L_H - M - 1);
+ Syn_filt (Ap4, h, h, L_H, &h[M + 1], 0);
+
+ // 1st correlation of h[]
+
+ L_tmp = L_mult (h[0], h[0]);
+ for (i = 1; i < L_H; i++)
+ {
+ L_tmp = L_mac (L_tmp, h[i], h[i]);
+ }
+ temp1 = extract_h (L_tmp);
+
+ L_tmp = L_mult (h[0], h[1]);
+ for (i = 1; i < L_H - 1; i++)
+ {
+ L_tmp = L_mac (L_tmp, h[i], h[i + 1]);
+ }
+ temp2 = extract_h (L_tmp);
+
+ if (temp2 <= 0)
+ {
+ temp2 = 0;
+ }
+ else
+ {
+ temp2 = mult (temp2, MU);
+ temp2 = div_s (temp2, temp1);
+ }
+
+ preemphasis (st->preemph_state, st->res2, temp2, L_SUBFR);
+
+ // filtering through 1/A(z/0.75)
+
+ Syn_filt (Ap4, st->res2, &syn[i_subfr], L_SUBFR, st->mem_syn_pst, 1);
+
+ // scale output to input
+
+ agc (st->agc_state, &syn_work[i_subfr], &syn[i_subfr],
+ AGC_FAC, L_SUBFR);
+
+ Az += MP1;
+ }
+
+ // update syn_work[] buffer
+
+ Copy (&syn_work[L_FRAME - M], &syn_work[-M], M);
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void Post_Filter(
+ Post_FilterState *st, /* i/o : post filter states */
+ enum Mode mode, /* i : AMR mode */
+ Word16 *syn, /* i/o : synthesis speech (postfiltered is output) */
+ Word16 *Az_4, /* i : interpolated LPC parameters in all subfr. */
+ Flag *pOverflow
+)
+{
+ Word16 Ap3[MP1];
+ Word16 Ap4[MP1]; /* bandwidth expanded LP parameters */
+ Word16 *Az; /* pointer to Az_4: */
+ /* LPC parameters in each subframe */
+ Word16 i_subfr; /* index for beginning of subframe */
+ Word16 h[L_H];
+
+ Word16 i;
+ Word16 temp1;
+ Word16 temp2;
+ Word32 L_tmp;
+ Word32 L_tmp2;
+ Word16 *syn_work = &st->synth_buf[M];
+
+
+ /*-----------------------------------------------------*
+ * Post filtering *
+ *-----------------------------------------------------*/
+
+ Copy(syn, syn_work , L_FRAME);
+
+ Az = Az_4;
+
+ for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
+ {
+ /* Find weighted filter coefficients Ap3[] and ap[4] */
+
+ if (mode == MR122 || mode == MR102)
+ {
+ Weight_Ai(Az, gamma3_MR122, Ap3);
+ Weight_Ai(Az, gamma4_MR122, Ap4);
+ }
+ else
+ {
+ Weight_Ai(Az, gamma3, Ap3);
+ Weight_Ai(Az, gamma4, Ap4);
+ }
+
+ /* filtering of synthesis speech by A(z/0.7) to find res2[] */
+
+ Residu(Ap3, &syn_work[i_subfr], st->res2, L_SUBFR);
+
+ /* tilt compensation filter */
+
+ /* impulse response of A(z/0.7)/A(z/0.75) */
+
+ Copy(Ap3, h, M + 1);
+ memset(&h[M + 1], 0, sizeof(Word16)*(L_H - M - 1));
+ Syn_filt(Ap4, h, h, L_H, &h[M + 1], 0);
+
+ /* 1st correlation of h[] */
+
+ L_tmp = 0;
+
+ for (i = L_H - 1; i >= 0; i--)
+ {
+ L_tmp2 = ((Word32) h[i]) * h[i];
+
+ if (L_tmp2 != (Word32) 0x40000000L)
+ {
+ L_tmp2 = L_tmp2 << 1;
+ }
+ else
+ {
+ *pOverflow = 1;
+ L_tmp2 = MAX_32;
+ break;
+ }
+
+ L_tmp = L_add(L_tmp, L_tmp2, pOverflow);
+ }
+ temp1 = (Word16)(L_tmp >> 16);
+
+ L_tmp = 0;
+
+ for (i = L_H - 2; i >= 0; i--)
+ {
+ L_tmp2 = ((Word32) h[i]) * h[i + 1];
+
+ if (L_tmp2 != (Word32) 0x40000000L)
+ {
+ L_tmp2 = L_tmp2 << 1;
+ }
+ else
+ {
+ *pOverflow = 1;
+ L_tmp2 = MAX_32;
+ break;
+ }
+
+ L_tmp = L_add(L_tmp, L_tmp2, pOverflow);
+ }
+ temp2 = (Word16)(L_tmp >> 16);
+
+ if (temp2 <= 0)
+ {
+ temp2 = 0;
+ }
+ else
+ {
+ L_tmp = (((Word32) temp2) * MU) >> 15;
+
+ /* Sign-extend product */
+ if (L_tmp & (Word32) 0x00010000L)
+ {
+ L_tmp = L_tmp | (Word32) 0xffff0000L;
+ }
+ temp2 = (Word16) L_tmp;
+
+ temp2 = div_s(temp2, temp1);
+ }
+
+ preemphasis(&(st->preemph_state), st->res2, temp2, L_SUBFR, pOverflow);
+
+ /* filtering through 1/A(z/0.75) */
+
+ Syn_filt(Ap4, st->res2, &syn[i_subfr], L_SUBFR, st->mem_syn_pst, 1);
+
+ /* scale output to input */
+
+ agc(&(st->agc_state), &syn_work[i_subfr], &syn[i_subfr],
+ AGC_FAC, L_SUBFR, pOverflow);
+
+ Az += MP1;
+ }
+
+ /* update syn_work[] buffer */
+
+ Copy(&syn_work[L_FRAME - M], &syn_work[-M], M);
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/src/pstfilt.h b/media/codecs/amrnb/dec/src/pstfilt.h
new file mode 100644
index 0000000..29c0d84
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/pstfilt.h
@@ -0,0 +1,143 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/src/include/pstfilt.h
+
+ Date: 02/05/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ File : pstfilt.h
+ Purpose : Performs adaptive postfiltering on the synthesis
+ : speech
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _PSTFILT_H_
+#define _PSTFILT_H_
+#define pstfilt_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "mode.h"
+#include "cnst.h"
+#include "preemph.h"
+#include "agc.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; [Declare variables used in this module but defined elsewhere]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+ typedef struct
+ {
+ Word16 res2[L_SUBFR];
+ Word16 mem_syn_pst[M];
+ preemphasisState preemph_state;
+ agcState agc_state;
+ Word16 synth_buf[M + L_FRAME];
+ } Post_FilterState;
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+ Word16 Post_Filter_reset(Post_FilterState *st);
+ /* reset post filter (i.e. set state memory to zero)
+ returns 0 on success
+ */
+
+ void Post_Filter(
+ Post_FilterState *st, /* i/o : post filter states */
+ enum Mode mode, /* i : AMR mode */
+ Word16 *syn, /* i/o : synthesis speech (postfiltered is output) */
+ Word16 *Az_4, /* i : interpolated LPC parameters in all subfr. */
+ Flag *pOverflow
+ );
+ /* filters the signal syn using the parameters in Az_4 to calculate filter
+ coefficients.
+ The filter must be set up using Post_Filter_init prior to the first call
+ to Post_Filter. Post_FilterState is updated to mirror the current state
+ of the filter
+
+ return 0 on success
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PSTFILT_H_ */
+
+
+
diff --git a/media/codecs/amrnb/dec/src/qgain475_tab.cpp b/media/codecs/amrnb/dec/src/qgain475_tab.cpp
new file mode 100644
index 0000000..1a08efa
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/qgain475_tab.cpp
@@ -0,0 +1,435 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+
+
+
+ Filename: /audio/gsm_amr/c/src/qgain475_tab.c
+
+ Date: 12/09/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Created this file from the reference, qgain475.tab.
+
+ Description: Added #ifdef __cplusplus and removed "extern" from table
+ definition.
+
+ Description: Put "extern" back.
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "qgain475_tab.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; [Define module specific macros here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; [Include all pre-processor statements here. Include conditional
+ ; compile variables also.]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL FUNCTION DEFINITIONS
+ ; [List function prototypes here]
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; LOCAL VARIABLE DEFINITIONS
+ ; [Variable declaration - defined here and used outside this module]
+ ----------------------------------------------------------------------------*/
+
+ /* The table contains the following data:
+ *
+ * g_pitch(0) (Q14) // for sub-
+ * g_fac(0) (Q12) // frame 0 and 2
+ * g_pitch(1) (Q14) // for sub-
+ * g_fac(2) (Q12) // frame 1 and 3
+ *
+ */
+ const Word16 table_gain_MR475[MR475_VQ_SIZE*4] =
+ {
+ /*g_pit(0), g_fac(0), g_pit(1), g_fac(1) */
+ 812, 128, 542, 140,
+ 2873, 1135, 2266, 3402,
+ 2067, 563, 12677, 647,
+ 4132, 1798, 5601, 5285,
+ 7689, 374, 3735, 441,
+ 10912, 2638, 11807, 2494,
+ 20490, 797, 5218, 675,
+ 6724, 8354, 5282, 1696,
+ 1488, 428, 5882, 452,
+ 5332, 4072, 3583, 1268,
+ 2469, 901, 15894, 1005,
+ 14982, 3271, 10331, 4858,
+ 3635, 2021, 2596, 835,
+ 12360, 4892, 12206, 1704,
+ 13432, 1604, 9118, 2341,
+ 3968, 1538, 5479, 9936,
+ 3795, 417, 1359, 414,
+ 3640, 1569, 7995, 3541,
+ 11405, 645, 8552, 635,
+ 4056, 1377, 16608, 6124,
+ 11420, 700, 2007, 607,
+ 12415, 1578, 11119, 4654,
+ 13680, 1708, 11990, 1229,
+ 7996, 7297, 13231, 5715,
+ 2428, 1159, 2073, 1941,
+ 6218, 6121, 3546, 1804,
+ 8925, 1802, 8679, 1580,
+ 13935, 3576, 13313, 6237,
+ 6142, 1130, 5994, 1734,
+ 14141, 4662, 11271, 3321,
+ 12226, 1551, 13931, 3015,
+ 5081, 10464, 9444, 6706,
+ 1689, 683, 1436, 1306,
+ 7212, 3933, 4082, 2713,
+ 7793, 704, 15070, 802,
+ 6299, 5212, 4337, 5357,
+ 6676, 541, 6062, 626,
+ 13651, 3700, 11498, 2408,
+ 16156, 716, 12177, 751,
+ 8065, 11489, 6314, 2256,
+ 4466, 496, 7293, 523,
+ 10213, 3833, 8394, 3037,
+ 8403, 966, 14228, 1880,
+ 8703, 5409, 16395, 4863,
+ 7420, 1979, 6089, 1230,
+ 9371, 4398, 14558, 3363,
+ 13559, 2873, 13163, 1465,
+ 5534, 1678, 13138, 14771,
+ 7338, 600, 1318, 548,
+ 4252, 3539, 10044, 2364,
+ 10587, 622, 13088, 669,
+ 14126, 3526, 5039, 9784,
+ 15338, 619, 3115, 590,
+ 16442, 3013, 15542, 4168,
+ 15537, 1611, 15405, 1228,
+ 16023, 9299, 7534, 4976,
+ 1990, 1213, 11447, 1157,
+ 12512, 5519, 9475, 2644,
+ 7716, 2034, 13280, 2239,
+ 16011, 5093, 8066, 6761,
+ 10083, 1413, 5002, 2347,
+ 12523, 5975, 15126, 2899,
+ 18264, 2289, 15827, 2527,
+ 16265, 10254, 14651, 11319,
+ 1797, 337, 3115, 397,
+ 3510, 2928, 4592, 2670,
+ 7519, 628, 11415, 656,
+ 5946, 2435, 6544, 7367,
+ 8238, 829, 4000, 863,
+ 10032, 2492, 16057, 3551,
+ 18204, 1054, 6103, 1454,
+ 5884, 7900, 18752, 3468,
+ 1864, 544, 9198, 683,
+ 11623, 4160, 4594, 1644,
+ 3158, 1157, 15953, 2560,
+ 12349, 3733, 17420, 5260,
+ 6106, 2004, 2917, 1742,
+ 16467, 5257, 16787, 1680,
+ 17205, 1759, 4773, 3231,
+ 7386, 6035, 14342, 10012,
+ 4035, 442, 4194, 458,
+ 9214, 2242, 7427, 4217,
+ 12860, 801, 11186, 825,
+ 12648, 2084, 12956, 6554,
+ 9505, 996, 6629, 985,
+ 10537, 2502, 15289, 5006,
+ 12602, 2055, 15484, 1653,
+ 16194, 6921, 14231, 5790,
+ 2626, 828, 5615, 1686,
+ 13663, 5778, 3668, 1554,
+ 11313, 2633, 9770, 1459,
+ 14003, 4733, 15897, 6291,
+ 6278, 1870, 7910, 2285,
+ 16978, 4571, 16576, 3849,
+ 15248, 2311, 16023, 3244,
+ 14459, 17808, 11847, 2763,
+ 1981, 1407, 1400, 876,
+ 4335, 3547, 4391, 4210,
+ 5405, 680, 17461, 781,
+ 6501, 5118, 8091, 7677,
+ 7355, 794, 8333, 1182,
+ 15041, 3160, 14928, 3039,
+ 20421, 880, 14545, 852,
+ 12337, 14708, 6904, 1920,
+ 4225, 933, 8218, 1087,
+ 10659, 4084, 10082, 4533,
+ 2735, 840, 20657, 1081,
+ 16711, 5966, 15873, 4578,
+ 10871, 2574, 3773, 1166,
+ 14519, 4044, 20699, 2627,
+ 15219, 2734, 15274, 2186,
+ 6257, 3226, 13125, 19480,
+ 7196, 930, 2462, 1618,
+ 4515, 3092, 13852, 4277,
+ 10460, 833, 17339, 810,
+ 16891, 2289, 15546, 8217,
+ 13603, 1684, 3197, 1834,
+ 15948, 2820, 15812, 5327,
+ 17006, 2438, 16788, 1326,
+ 15671, 8156, 11726, 8556,
+ 3762, 2053, 9563, 1317,
+ 13561, 6790, 12227, 1936,
+ 8180, 3550, 13287, 1778,
+ 16299, 6599, 16291, 7758,
+ 8521, 2551, 7225, 2645,
+ 18269, 7489, 16885, 2248,
+ 17882, 2884, 17265, 3328,
+ 9417, 20162, 11042, 8320,
+ 1286, 620, 1431, 583,
+ 5993, 2289, 3978, 3626,
+ 5144, 752, 13409, 830,
+ 5553, 2860, 11764, 5908,
+ 10737, 560, 5446, 564,
+ 13321, 3008, 11946, 3683,
+ 19887, 798, 9825, 728,
+ 13663, 8748, 7391, 3053,
+ 2515, 778, 6050, 833,
+ 6469, 5074, 8305, 2463,
+ 6141, 1865, 15308, 1262,
+ 14408, 4547, 13663, 4515,
+ 3137, 2983, 2479, 1259,
+ 15088, 4647, 15382, 2607,
+ 14492, 2392, 12462, 2537,
+ 7539, 2949, 12909, 12060,
+ 5468, 684, 3141, 722,
+ 5081, 1274, 12732, 4200,
+ 15302, 681, 7819, 592,
+ 6534, 2021, 16478, 8737,
+ 13364, 882, 5397, 899,
+ 14656, 2178, 14741, 4227,
+ 14270, 1298, 13929, 2029,
+ 15477, 7482, 15815, 4572,
+ 2521, 2013, 5062, 1804,
+ 5159, 6582, 7130, 3597,
+ 10920, 1611, 11729, 1708,
+ 16903, 3455, 16268, 6640,
+ 9306, 1007, 9369, 2106,
+ 19182, 5037, 12441, 4269,
+ 15919, 1332, 15357, 3512,
+ 11898, 14141, 16101, 6854,
+ 2010, 737, 3779, 861,
+ 11454, 2880, 3564, 3540,
+ 9057, 1241, 12391, 896,
+ 8546, 4629, 11561, 5776,
+ 8129, 589, 8218, 588,
+ 18728, 3755, 12973, 3149,
+ 15729, 758, 16634, 754,
+ 15222, 11138, 15871, 2208,
+ 4673, 610, 10218, 678,
+ 15257, 4146, 5729, 3327,
+ 8377, 1670, 19862, 2321,
+ 15450, 5511, 14054, 5481,
+ 5728, 2888, 7580, 1346,
+ 14384, 5325, 16236, 3950,
+ 15118, 3744, 15306, 1435,
+ 14597, 4070, 12301, 15696,
+ 7617, 1699, 2170, 884,
+ 4459, 4567, 18094, 3306,
+ 12742, 815, 14926, 907,
+ 15016, 4281, 15518, 8368,
+ 17994, 1087, 2358, 865,
+ 16281, 3787, 15679, 4596,
+ 16356, 1534, 16584, 2210,
+ 16833, 9697, 15929, 4513,
+ 3277, 1085, 9643, 2187,
+ 11973, 6068, 9199, 4462,
+ 8955, 1629, 10289, 3062,
+ 16481, 5155, 15466, 7066,
+ 13678, 2543, 5273, 2277,
+ 16746, 6213, 16655, 3408,
+ 20304, 3363, 18688, 1985,
+ 14172, 12867, 15154, 15703,
+ 4473, 1020, 1681, 886,
+ 4311, 4301, 8952, 3657,
+ 5893, 1147, 11647, 1452,
+ 15886, 2227, 4582, 6644,
+ 6929, 1205, 6220, 799,
+ 12415, 3409, 15968, 3877,
+ 19859, 2109, 9689, 2141,
+ 14742, 8830, 14480, 2599,
+ 1817, 1238, 7771, 813,
+ 19079, 4410, 5554, 2064,
+ 3687, 2844, 17435, 2256,
+ 16697, 4486, 16199, 5388,
+ 8028, 2763, 3405, 2119,
+ 17426, 5477, 13698, 2786,
+ 19879, 2720, 9098, 3880,
+ 18172, 4833, 17336, 12207,
+ 5116, 996, 4935, 988,
+ 9888, 3081, 6014, 5371,
+ 15881, 1667, 8405, 1183,
+ 15087, 2366, 19777, 7002,
+ 11963, 1562, 7279, 1128,
+ 16859, 1532, 15762, 5381,
+ 14708, 2065, 20105, 2155,
+ 17158, 8245, 17911, 6318,
+ 5467, 1504, 4100, 2574,
+ 17421, 6810, 5673, 2888,
+ 16636, 3382, 8975, 1831,
+ 20159, 4737, 19550, 7294,
+ 6658, 2781, 11472, 3321,
+ 19397, 5054, 18878, 4722,
+ 16439, 2373, 20430, 4386,
+ 11353, 26526, 11593, 3068,
+ 2866, 1566, 5108, 1070,
+ 9614, 4915, 4939, 3536,
+ 7541, 878, 20717, 851,
+ 6938, 4395, 16799, 7733,
+ 10137, 1019, 9845, 964,
+ 15494, 3955, 15459, 3430,
+ 18863, 982, 20120, 963,
+ 16876, 12887, 14334, 4200,
+ 6599, 1220, 9222, 814,
+ 16942, 5134, 5661, 4898,
+ 5488, 1798, 20258, 3962,
+ 17005, 6178, 17929, 5929,
+ 9365, 3420, 7474, 1971,
+ 19537, 5177, 19003, 3006,
+ 16454, 3788, 16070, 2367,
+ 8664, 2743, 9445, 26358,
+ 10856, 1287, 3555, 1009,
+ 5606, 3622, 19453, 5512,
+ 12453, 797, 20634, 911,
+ 15427, 3066, 17037, 10275,
+ 18883, 2633, 3913, 1268,
+ 19519, 3371, 18052, 5230,
+ 19291, 1678, 19508, 3172,
+ 18072, 10754, 16625, 6845,
+ 3134, 2298, 10869, 2437,
+ 15580, 6913, 12597, 3381,
+ 11116, 3297, 16762, 2424,
+ 18853, 6715, 17171, 9887,
+ 12743, 2605, 8937, 3140,
+ 19033, 7764, 18347, 3880,
+ 20475, 3682, 19602, 3380,
+ 13044, 19373, 10526, 23124
+ };
+
+
+ /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME:
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ None
+
+ Outputs:
+ None
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ None
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ [1] qua_gain.tab, UMTS GSM AMR speech codec,
+ R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+
+
+
+
+
+
diff --git a/media/codecs/amrnb/dec/src/sp_dec.cpp b/media/codecs/amrnb/dec/src/sp_dec.cpp
new file mode 100644
index 0000000..49cafff
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/sp_dec.cpp
@@ -0,0 +1,693 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/sp_dec.c
+ Functions: GSMInitDecode
+ Speech_Decode_Frame_reset
+ GSMDecodeFrameExit
+ GSMFrameDecode
+
+ Date: 08/03/2001
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Add PV coding template. Filled out template sections and
+ reformatted code to follow C coding standard. Removed code that
+ handles SID in GSMFrameDecode.
+
+ Description: Made the following changes per comments from Phase 2/3 review:
+ 1. Updated to more recent PV C coding template.
+ 2. Took out all the tabs in the file and replaced with spaces.
+ 3. Deleted bit_offset from input list of GSMFrameDecode.
+
+ Description: Changing several variables passed into these functions of type
+ Speech_Decode_FrameState to type void.
+
+ Description: Cleaning up brackets and line spacing for statements with
+ brackets as per a review comments.
+
+ Description: Synchronized file with UMTS version 3.2.0. Removed unnecessary
+ include files.
+
+ Description: Removed all references to malloc/free, except for the top-level
+ malloc in GSMInitDecode, and corresponding free in GSMDecodeFrameExit.
+
+ Also, modified function calls throughout to reflect the fact that the members
+ of the structure Decoder_amrState are no longer pointers to be set via
+ malloc, but full-blown structures. (Changes of the type D_plsfState *lsfState
+ to D_plsfState lsfState)
+
+ Description: Created overflow and pass the variable into the decoder.
+
+ Description: Changed inititlaization of the pointer to overflow flag. Removed
+ code related to MOPS counter.
+
+ Description: Replaced OSCL mem type functions and eliminated include
+ files that now are chosen by OSCL definitions
+
+ Description: Replaced "int" and/or "char" with defined types.
+ Added proper casting (Word32) to some left shifting operations
+
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the functions that initialize, invoke, reset, and exit
+ the GSM AMR decoder.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include <stdlib.h>
+
+#include "sp_dec.h"
+#include "typedef.h"
+#include "cnst.h"
+#include "dec_amr.h"
+#include "pstfilt.h"
+#include "bits2prm.h"
+#include "mode.h"
+#include "post_pro.h"
+
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: GSMInitDecode
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to an array of pointers to structures of type
+ Speech_Decode_FrameState
+ no_hp_post_MR122 = flag to turn off high-pass post filter for 12.2 kbps
+ mode (Flag)
+ id = pointer to an array whose contents are of type char
+
+ Outputs:
+ decoder_amrState field of the structure pointed to by the pointer pointed
+ to by state is set to NULL
+ post_state field of the structure pointed to by the pointer pointed to
+ by state is set to NULL
+ postHP_state field of the structure pointed to by the pointer pointed to
+ by state is set to NULL
+ no_hp_post_MR122 field of the structure pointed to by the pointer pointed
+ to by state is set to the input no_hp_post_MR122
+
+ Returns:
+ return_value = set to zero, if initialization was successful; -1,
+ otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function allocates memory for filter structure and initializes state
+ memory used by the GSM AMR decoder.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ sp_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Note: Original function name of Speech_Decode_Frame_init was changed to
+ GSMInitDecode in the Code section.
+
+int Speech_Decode_Frame_init (Speech_Decode_FrameState **state,
+ char *id)
+{
+ Speech_Decode_FrameState* s;
+
+ if (state == (Speech_Decode_FrameState **) NULL){
+ fprintf(stderr, "Speech_Decode_Frame_init: invalid parameter\n");
+ return -1;
+ }
+ *state = NULL;
+
+ // allocate memory
+ if ((s= (Speech_Decode_FrameState *)
+ malloc(sizeof(Speech_Decode_FrameState))) == NULL) {
+ fprintf(stderr, "Speech_Decode_Frame_init: can not malloc state "
+ "structure\n");
+ return -1;
+ }
+ s->decoder_amrState = NULL;
+ s->post_state = NULL;
+ s->postHP_state = NULL;
+
+ if (Decoder_amr_init(&s->decoder_amrState) ||
+ Post_Filter_init(&s->post_state) ||
+ Post_Process_init(&s->postHP_state) ) {
+ Speech_Decode_Frame_exit(&s);
+ return -1;
+ }
+
+ s->complexityCounter = getCounterId(id);
+
+ Speech_Decode_Frame_reset(s);
+ *state = s;
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 GSMInitDecode(void **state_data,
+ Word8 * id)
+{
+ Speech_Decode_FrameState* s;
+ OSCL_UNUSED_ARG(id);
+
+ if (state_data == NULL)
+ {
+ /* fprintf(stderr, "Speech_Decode_Frame_init:
+ invalid parameter\n"); */
+ return (-1);
+ }
+ *state_data = NULL;
+
+ /* allocate memory */
+ if ((s = (Speech_Decode_FrameState *)
+ malloc(sizeof(Speech_Decode_FrameState))) == NULL)
+ {
+ /* fprintf(stderr, "Speech_Decode_Frame_init: can not malloc state "
+ "structure\n"); */
+ return (-1);
+ }
+
+ if (Decoder_amr_init(&s->decoder_amrState)
+ || Post_Process_reset(&s->postHP_state))
+ {
+ free(s);
+ return (-1);
+ }
+
+
+ Speech_Decode_Frame_reset(s);
+ *state_data = (void *)s;
+
+ return (0);
+}
+
+
+/****************************************************************************/
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: Speech_Decode_Frame_reset
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to structures of type Speech_Decode_FrameState
+
+ Outputs:
+ None
+
+ Returns:
+ return_value = set to zero if reset was successful; -1, otherwise (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function resets the state memory used by the GSM AMR decoder.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ sp_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+int Speech_Decode_Frame_reset (Speech_Decode_FrameState *state)
+{
+ if (state == (Speech_Decode_FrameState *) NULL){
+ fprintf(stderr, "Speech_Decode_Frame_reset: invalid parameter\n");
+ return -1;
+ }
+
+ Decoder_amr_reset(state->decoder_amrState, (enum Mode)0);
+ Post_Filter_reset(state->post_state);
+ Post_Process_reset(state->postHP_state);
+
+ state->prev_mode = (enum Mode)0;
+
+ setCounter(state->complexityCounter);
+ Init_WMOPS_counter();
+ setCounter(0); // set counter to global counter
+
+ return 0;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+Word16 Speech_Decode_Frame_reset(void *state_data)
+{
+
+ Speech_Decode_FrameState *state =
+ (Speech_Decode_FrameState *) state_data;
+
+ if (state_data == NULL)
+ {
+ /* fprintf(stderr, "Speech_Decode_Frame_reset:
+ invalid parameter\n"); */
+ return (-1);
+ }
+
+ Decoder_amr_reset(&(state->decoder_amrState), MR475);
+ Post_Filter_reset(&(state->post_state));
+ Post_Process_reset(&(state->postHP_state));
+
+ state->prev_mode = MR475;
+
+ return (0);
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: GSMDecodeFrameExit
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ state = pointer to an array of pointers to structures of type
+ Speech_Decode_FrameState
+
+ Outputs:
+ state contents is set to NULL
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function frees up the memory used for the state memory of the GSM AMR
+ decoder.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ sp_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Note: The original function name of Speech_Decode_Frame_exit was changed to
+ GSMDecodeFrameExit in the Code section.
+
+void Speech_Decode_Frame_exit (Speech_Decode_FrameState **state)
+{
+ if (state == NULL || *state == NULL)
+ return;
+
+ Decoder_amr_exit(&(*state)->decoder_amrState);
+ Post_Filter_exit(&(*state)->post_state);
+ Post_Process_exit(&(*state)->postHP_state);
+
+ setCounter((*state)->complexityCounter);
+ WMOPS_output(0);
+ setCounter(0); // set counter to global counter
+
+ // deallocate memory
+ free(*state);
+ *state = NULL;
+
+ return;
+}
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void GSMDecodeFrameExit(void **state_data)
+{
+
+ Speech_Decode_FrameState **state =
+ (Speech_Decode_FrameState **) state_data;
+
+ if (state == NULL || *state == NULL)
+ {
+ return;
+ }
+
+ /* deallocate memory */
+ free(*state);
+ *state = NULL;
+
+ return;
+}
+
+/****************************************************************************/
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: GSMFrameDecode
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ st = pointer to structures of type Speech_Decode_FrameState
+ mode = GSM AMR codec mode (enum Mode)
+ serial = pointer to the serial bit stream buffer (unsigned char)
+ frame_type = GSM AMR receive frame type (enum RXFrameType)
+ synth = pointer to the output synthesis speech buffer (Word16)
+
+ Outputs:
+ synth contents are truncated to 13 bits if NO13BIT is not defined,
+ otherwise, its contents are left at 16 bits
+
+ Returns:
+ return_value = set to zero (int)
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function is the entry point to the GSM AMR decoder. The following
+ operations are performed on one received frame: First, the codec
+ parameters are parsed from the buffer pointed to by serial according to
+ frame_type. Then the AMR decoder is invoked via a call to Decoder_amr. Post
+ filtering of the decoded data is done via a call to Post_Filter function.
+ Lastly, the decoded data is post-processed via a call to Post_Process
+ function. If NO13BIT is not defined, the contents of the buffer pointed to
+ by synth is truncated to 13 bits. It remains unchanged otherwise.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ sp_dec.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+ Note: The original function name of Speech_Decode_Frame_exit was changed to
+ GSMFrameDecode in the Code section.
+
+int Speech_Decode_Frame (
+ Speech_Decode_FrameState *st, // io: post filter states
+ enum Mode mode, // i : AMR mode
+ Word16 *serial, // i : serial bit stream
+ enum RXFrameType frame_type, // i : Frame type
+ Word16 *synth // o : synthesis speech (postfiltered
+ // output)
+)
+{
+ Word16 parm[MAX_PRM_SIZE + 1]; // Synthesis parameters
+ Word16 Az_dec[AZ_SIZE]; // Decoded Az for post-filter
+ // in 4 subframes
+
+#if !defined(NO13BIT)
+ Word16 i;
+#endif
+
+ setCounter(st->complexityCounter);
+ Reset_WMOPS_counter (); // reset WMOPS counter for the new frame
+
+ // Serial to parameters
+ if ((frame_type == RX_SID_BAD) ||
+ (frame_type == RX_SID_UPDATE)) {
+ // Override mode to MRDTX
+ Bits2prm (MRDTX, serial, parm);
+ } else {
+ Bits2prm (mode, serial, parm);
+ }
+
+ // Synthesis
+ Decoder_amr(st->decoder_amrState, mode, parm, frame_type,
+ synth, Az_dec);
+
+ Post_Filter(st->post_state, mode, synth, Az_dec); // Post-filter
+
+ // post HP filter, and 15->16 bits
+ Post_Process(st->postHP_state, synth, L_FRAME);
+
+#if !defined(NO13BIT)
+ // Truncate to 13 bits
+ for (i = 0; i < L_FRAME; i++)
+ {
+ synth[i] = synth[i] & 0xfff8;
+ }
+#endif
+
+ setCounter(0); // set counter to global counter
+
+ return 0;
+}
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void GSMFrameDecode(
+ Speech_Decode_FrameState *st, /* io: post filter states */
+ enum Mode mode, /* i : AMR mode */
+ Word16 *serial, /* i : serial bit stream */
+ enum RXFrameType frame_type, /* i : Frame type */
+ Word16 *synth) /* o : synthesis speech (postfiltered */
+/* output) */
+
+{
+ Word16 parm[MAX_PRM_SIZE + 1]; /* Synthesis parameters */
+ Word16 Az_dec[AZ_SIZE]; /* Decoded Az for post-filter */
+ /* in 4 subframes */
+ Flag *pOverflow = &(st->decoder_amrState.overflow); /* Overflow flag */
+
+#if !defined(NO13BIT)
+ Word16 i;
+#endif
+
+ /* Serial to parameters */
+ if ((frame_type == RX_SID_BAD) ||
+ (frame_type == RX_SID_UPDATE))
+ {
+ /* Override mode to MRDTX */
+ Bits2prm(MRDTX, serial, parm);
+ }
+ else
+ {
+ Bits2prm(mode, serial, parm);
+ }
+
+ /* Synthesis */
+ Decoder_amr(
+ &(st->decoder_amrState),
+ mode,
+ parm,
+ frame_type,
+ synth,
+ Az_dec);
+
+ /* Post-filter */
+ Post_Filter(
+ &(st->post_state),
+ mode,
+ synth,
+ Az_dec,
+ pOverflow);
+
+ /* post HP filter, and 15->16 bits */
+ Post_Process(
+ &(st->postHP_state),
+ synth,
+ L_FRAME,
+ pOverflow);
+
+#if !defined(NO13BIT)
+ /* Truncate to 13 bits */
+ for (i = 0; i < L_FRAME; i++)
+ {
+ synth[i] = synth[i] & 0xfff8;
+ }
+#endif
+
+ return;
+}
+
+
+
diff --git a/media/codecs/amrnb/dec/src/sp_dec.h b/media/codecs/amrnb/dec/src/sp_dec.h
new file mode 100644
index 0000000..3150feb
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/sp_dec.h
@@ -0,0 +1,113 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+*****************************************************************************
+*
+* GSM AMR speech codec Version 2.0.0 February 8, 1999
+*
+*****************************************************************************
+*
+* File : sp_dec.h
+* Purpose : Decoding and post filtering of one speech frame.
+*
+
+ Description: Replaced "int" and/or "char" with OSCL defined types.
+
+*****************************************************************************
+*/
+#ifndef sp_dec_h
+#define sp_dec_h "$Id $"
+
+/*
+*****************************************************************************
+* INCLUDE FILES
+*****************************************************************************
+*/
+#include "typedef.h"
+#include "cnst.h"
+#include "dec_amr.h"
+#include "pstfilt.h"
+#include "post_pro.h"
+#include "mode.h"
+
+/*
+*****************************************************************************
+* DEFINITION OF DATA TYPES
+*****************************************************************************
+*/
+typedef struct
+{
+ Decoder_amrState decoder_amrState;
+ Post_FilterState post_state;
+ Post_ProcessState postHP_state;
+ enum Mode prev_mode;
+} Speech_Decode_FrameState;
+
+/*
+*****************************************************************************
+* DECLARATION OF PROTOTYPES
+*****************************************************************************
+*/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+ Word16 GSMInitDecode(void **state_data,
+ Word8 *id);
+ /* initialize one instance of the speech decoder
+ Stores pointer to filter status struct in *st. This pointer has to
+ be passed to Speech_Decode_Frame in each call.
+ returns 0 on success
+ */
+
+ Word16 Speech_Decode_Frame_reset(void *state_data);
+ /* reset speech decoder (i.e. set state memory to zero)
+ returns 0 on success
+ */
+
+ void GSMDecodeFrameExit(void **state_data);
+ /* de-initialize speech decoder (i.e. free status struct)
+ stores NULL in *s
+ */
+
+ void GSMFrameDecode(
+ Speech_Decode_FrameState *st, /* io: post filter states */
+ enum Mode mode, /* i : AMR mode */
+ Word16 *serial, /* i : serial bit stream */
+ enum RXFrameType frame_type, /* i : Frame type */
+ Word16 *synth /* o : synthesis speech (postfiltered */
+ /* output) */
+ );
+ /* return 0 on success
+ */
+#if defined(__cplusplus)
+}
+#endif
+#endif
diff --git a/media/codecs/amrnb/dec/src/wmf_to_ets.cpp b/media/codecs/amrnb/dec/src/wmf_to_ets.cpp
new file mode 100644
index 0000000..4dfbb67
--- /dev/null
+++ b/media/codecs/amrnb/dec/src/wmf_to_ets.cpp
@@ -0,0 +1,190 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/wmf_to_ets.c
+ Funtions: wmf_to_ets
+
+ Date: 01/21/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changing mode to frame_type_3gpp for DTX support. Modifying for
+ loops for optimized code. Updating as per review comments.
+
+ Description: Changed MRDTX to AMR_SID in the code and added bitreorder_tab.h
+ in the Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "frame_type_3gpp.h"
+#include "wmf_to_ets.h"
+#include "typedef.h"
+#include "bitreorder_tab.h"
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: wmf_to_ets
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+ frame_type_3gpp = decoder speech bit rate (enum Frame_Type_3GPP)
+ wmf_input_ptr = pointer to input encoded speech bits in WMF (non-IF2) format
+ (Word8)
+ ets_output_ptr = pointer to output encoded speech bits in ETS format (Word16)
+
+ Outputs:
+ ets_output_ptr = pointer to encoded speech bits in the ETS format (Word16)
+
+ Returns:
+ None
+
+ Global Variables Used:
+ None
+
+ Local Variables Needed:
+ None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs a transformation on the data buffers. It converts the
+ data format from WMF (non-IF2) (Wireless Multi-media Forum) to ETS (European
+ Telecommunication Standard). WMF format has the encoded speech bits byte
+ aligned with MSB to LSB going left to right. ETS format has the encoded speech
+ bits each separate with only one bit stored in each word.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+AMR Speech Codec Frame Structure", 3GPP TS 26.101 version 4.1.0 Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+ used to represent cycle count for each subroutine
+ called)
+ where: (cycle count variable) = cycle count for [subroutine
+ name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void wmf_to_ets(
+ enum Frame_Type_3GPP frame_type_3gpp,
+ UWord8 *wmf_input_ptr,
+ Word16 *ets_output_ptr)
+{
+
+ Word16 i;
+
+ /*
+ * The following section of code accesses bits in the WMF method of
+ * bit ordering. Each bit is given its own location in the buffer pointed
+ * to by ets_output_ptr. If the frame_type_3gpp is less than MRDTX then
+ * the elements are reordered within the buffer pointed to by ets_output_ptr.
+ */
+
+ if (frame_type_3gpp < AMR_SID)
+ {
+ /* The table numOfBits[] can be found in bitreorder.c. */
+ for (i = numOfBits[frame_type_3gpp] - 1; i >= 0; i--)
+ {
+ /* The table reorderBits[][] can be found in bitreorder.c. */
+ ets_output_ptr[reorderBits[frame_type_3gpp][i]] =
+ (wmf_input_ptr[i>>3] >> ((~i) & 0x7)) & 0x01;
+ }
+ }
+ else
+ {
+ /* The table numOfBits[] can be found in bitreorder.c. */
+ for (i = numOfBits[frame_type_3gpp] - 1; i >= 0; i--)
+ {
+ ets_output_ptr[i] = (wmf_input_ptr[i>>3] >> ((~i) & 0x7)) & 0x01;
+ }
+ }
+
+ return;
+}
diff --git a/media/codecs/amrnb/dec/test/AmrnbDecTestEnvironment.h b/media/codecs/amrnb/dec/test/AmrnbDecTestEnvironment.h
new file mode 100644
index 0000000..0344ac5
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/AmrnbDecTestEnvironment.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __AMRNBDEC_TEST_ENVIRONMENT_H__
+#define __AMRNBDEC_TEST_ENVIRONMENT_H__
+
+#include <gtest/gtest.h>
+
+#include <getopt.h>
+
+using namespace std;
+
+class AmrnbDecTestEnvironment : public ::testing::Environment {
+ public:
+ AmrnbDecTestEnvironment() : res("/data/local/tmp/") {}
+
+ // Parses the command line arguments
+ int initFromOptions(int argc, char **argv);
+
+ void setRes(const char *_res) { res = _res; }
+
+ const string getRes() const { return res; }
+
+ private:
+ string res;
+};
+
+int AmrnbDecTestEnvironment::initFromOptions(int argc, char **argv) {
+ static struct option options[] = {{"res", required_argument, 0, 'P'}, {0, 0, 0, 0}};
+
+ while (true) {
+ int index = 0;
+ int c = getopt_long(argc, argv, "P:", options, &index);
+ if (c == -1) {
+ break;
+ }
+
+ switch (c) {
+ case 'P':
+ setRes(optarg);
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (optind < argc) {
+ fprintf(stderr,
+ "unrecognized option: %s\n\n"
+ "usage: %s <gtest options> <test options>\n\n"
+ "test options are:\n\n"
+ "-P, --path: Resource files directory location\n",
+ argv[optind ?: 1], argv[0]);
+ return 2;
+ }
+ return 0;
+}
+
+#endif // __AMRNBDEC_TEST_ENVIRONMENT_H__
diff --git a/media/codecs/amrnb/dec/test/AmrnbDecoderTest.cpp b/media/codecs/amrnb/dec/test/AmrnbDecoderTest.cpp
new file mode 100644
index 0000000..af62074
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/AmrnbDecoderTest.cpp
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "AmrnbDecoderTest"
+#define OUTPUT_FILE "/data/local/tmp/amrnbDecode.out"
+
+#include <utils/Log.h>
+
+#include <audio_utils/sndfile.h>
+#include <stdio.h>
+
+#include "gsmamr_dec.h"
+
+#include "AmrnbDecTestEnvironment.h"
+
+// Constants for AMR-NB
+constexpr int32_t kInputBufferSize = 64;
+constexpr int32_t kSamplesPerFrame = L_FRAME;
+constexpr int32_t kBitsPerSample = 16;
+constexpr int32_t kSampleRate = 8000;
+constexpr int32_t kChannels = 1;
+constexpr int32_t kOutputBufferSize = kSamplesPerFrame * kBitsPerSample / 8;
+const int32_t kFrameSizes[] = {12, 13, 15, 17, 19, 20, 26, 31, -1, -1, -1, -1, -1, -1, -1, -1};
+
+constexpr int32_t kNumFrameReset = 150;
+
+static AmrnbDecTestEnvironment *gEnv = nullptr;
+
+class AmrnbDecoderTest : public ::testing::TestWithParam<string> {
+ public:
+ AmrnbDecoderTest() : mFpInput(nullptr) {}
+
+ ~AmrnbDecoderTest() {
+ if (mFpInput) {
+ fclose(mFpInput);
+ mFpInput = nullptr;
+ }
+ }
+
+ FILE *mFpInput;
+ SNDFILE *openOutputFile(SF_INFO *sfInfo);
+ int32_t DecodeFrames(void *amrHandle, SNDFILE *outFileHandle, int32_t frameCount = INT32_MAX);
+};
+
+SNDFILE *AmrnbDecoderTest::openOutputFile(SF_INFO *sfInfo) {
+ memset(sfInfo, 0, sizeof(SF_INFO));
+ sfInfo->channels = kChannels;
+ sfInfo->format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
+ sfInfo->samplerate = kSampleRate;
+ SNDFILE *outFileHandle = sf_open(OUTPUT_FILE, SFM_WRITE, sfInfo);
+ return outFileHandle;
+}
+
+int32_t AmrnbDecoderTest::DecodeFrames(void *amrHandle, SNDFILE *outFileHandle,
+ int32_t frameCount) {
+ uint8_t inputBuf[kInputBufferSize];
+ int16_t outputBuf[kOutputBufferSize];
+
+ while (frameCount > 0) {
+ uint8_t mode;
+ int32_t bytesRead = fread(&mode, 1, 1, mFpInput);
+ if (bytesRead != 1) break;
+
+ // Find frame type
+ Frame_Type_3GPP frameType = (Frame_Type_3GPP)((mode >> 3) & 0x0f);
+ int32_t frameSize = kFrameSizes[frameType];
+ if (frameSize < 0) {
+ ALOGE("Illegal frame type");
+ return -1;
+ }
+ bytesRead = fread(inputBuf, 1, frameSize, mFpInput);
+ if (bytesRead != frameSize) break;
+
+ int32_t bytesDecoded = AMRDecode(amrHandle, frameType, inputBuf, outputBuf, MIME_IETF);
+ if (bytesDecoded == -1) {
+ ALOGE("Failed to decode the input file");
+ return -1;
+ }
+
+ sf_writef_short(outFileHandle, outputBuf, kSamplesPerFrame);
+ frameCount--;
+ }
+ return 0;
+}
+
+TEST_F(AmrnbDecoderTest, CreateAmrnbDecoderTest) {
+ void *amrHandle;
+ int32_t status = GSMInitDecode(&amrHandle, (Word8 *)"AMRNBDecoder");
+ ASSERT_EQ(status, 0) << "Error creating AMR-NB decoder";
+ GSMDecodeFrameExit(&amrHandle);
+ ASSERT_EQ(amrHandle, nullptr) << "Error deleting AMR-NB decoder";
+}
+
+TEST_P(AmrnbDecoderTest, DecodeTest) {
+ string inputFile = gEnv->getRes() + GetParam();
+ mFpInput = fopen(inputFile.c_str(), "rb");
+ ASSERT_NE(mFpInput, nullptr) << "Error opening input file " << inputFile;
+
+ // Open the output file.
+ SF_INFO sfInfo;
+ SNDFILE *outFileHandle = openOutputFile(&sfInfo);
+ ASSERT_NE(outFileHandle, nullptr) << "Error opening output file for writing decoded output";
+
+ void *amrHandle;
+ int32_t status = GSMInitDecode(&amrHandle, (Word8 *)"AMRNBDecoder");
+ ASSERT_EQ(status, 0) << "Error creating AMR-NB decoder";
+
+ // Decode
+ int32_t decoderErr = DecodeFrames(amrHandle, outFileHandle);
+ ASSERT_EQ(decoderErr, 0) << "DecodeFrames returned error";
+
+ sf_close(outFileHandle);
+ GSMDecodeFrameExit(&amrHandle);
+ ASSERT_EQ(amrHandle, nullptr) << "Error deleting AMR-NB decoder";
+}
+
+TEST_P(AmrnbDecoderTest, ResetDecodeTest) {
+ string inputFile = gEnv->getRes() + GetParam();
+ mFpInput = fopen(inputFile.c_str(), "rb");
+ ASSERT_NE(mFpInput, nullptr) << "Error opening input file " << inputFile;
+
+ // Open the output file.
+ SF_INFO sfInfo;
+ SNDFILE *outFileHandle = openOutputFile(&sfInfo);
+ ASSERT_NE(outFileHandle, nullptr) << "Error opening output file for writing decoded output";
+
+ void *amrHandle;
+ int32_t status = GSMInitDecode(&amrHandle, (Word8 *)"AMRNBDecoder");
+ ASSERT_EQ(status, 0) << "Error creating AMR-NB decoder";
+
+ // Decode kNumFrameReset first
+ int32_t decoderErr = DecodeFrames(amrHandle, outFileHandle, kNumFrameReset);
+ ASSERT_EQ(decoderErr, 0) << "DecodeFrames returned error";
+
+ status = Speech_Decode_Frame_reset(amrHandle);
+ ASSERT_EQ(status, 0) << "Error resting AMR-NB decoder";
+
+ // Start decoding again
+ decoderErr = DecodeFrames(amrHandle, outFileHandle);
+ ASSERT_EQ(decoderErr, 0) << "DecodeFrames returned error";
+
+ sf_close(outFileHandle);
+ GSMDecodeFrameExit(&amrHandle);
+ ASSERT_EQ(amrHandle, nullptr) << "Error deleting AMR-NB decoder";
+}
+
+INSTANTIATE_TEST_SUITE_P(AmrnbDecoderTestAll, AmrnbDecoderTest,
+ ::testing::Values(("bbb_8000hz_1ch_8kbps_amrnb_30sec.amrnb"),
+ ("sine_amrnb_1ch_12kbps_8000hz.amrnb")));
+
+int main(int argc, char **argv) {
+ gEnv = new AmrnbDecTestEnvironment();
+ ::testing::AddGlobalTestEnvironment(gEnv);
+ ::testing::InitGoogleTest(&argc, argv);
+ int status = gEnv->initFromOptions(argc, argv);
+ if (status == 0) {
+ status = RUN_ALL_TESTS();
+ ALOGV("Test result = %d\n", status);
+ }
+ return status;
+}
diff --git a/media/codecs/amrnb/dec/test/Android.bp b/media/codecs/amrnb/dec/test/Android.bp
new file mode 100644
index 0000000..7a95cfa
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/Android.bp
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_test {
+ name: "AmrnbDecoderTest",
+ gtest: true,
+
+ srcs: [
+ "AmrnbDecoderTest.cpp",
+ ],
+
+ static_libs: [
+ "libstagefright_amrnb_common",
+ "libstagefright_amrnbdec",
+ "libaudioutils",
+ "libsndfile",
+ ],
+
+ shared_libs: [
+ "liblog",
+ ],
+
+ cflags: [
+ "-Werror",
+ "-Wall",
+ ],
+
+ sanitize: {
+ cfi: true,
+ misc_undefined: [
+ "unsigned-integer-overflow",
+ "signed-integer-overflow",
+ ],
+ },
+}
diff --git a/media/codecs/amrnb/dec/test/AndroidTest.xml b/media/codecs/amrnb/dec/test/AndroidTest.xml
new file mode 100644
index 0000000..1a9e678
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/AndroidTest.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<configuration description="Test module config for Amr-nb Decoder unit test">
+ <option name="test-suite-tag" value="AmrnbDecoderTest" />
+ <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+ <option name="cleanup" value="true" />
+ <option name="push" value="AmrnbDecoderTest->/data/local/tmp/AmrnbDecoderTest" />
+ <option name="push-file"
+ key="https://storage.googleapis.com/android_media/frameworks/av/media/libstagefright/codecs/amrnb/dec/test/AmrnbDecoderTest.zip?unzip=true"
+ value="/data/local/tmp/AmrnbDecoderTestRes/" />
+ </target_preparer>
+
+ <test class="com.android.tradefed.testtype.GTest" >
+ <option name="native-test-device-path" value="/data/local/tmp" />
+ <option name="module-name" value="AmrnbDecoderTest" />
+ <option name="native-test-flag" value="-P /data/local/tmp/AmrnbDecoderTestRes/" />
+ </test>
+</configuration>
diff --git a/media/codecs/amrnb/dec/test/README.md b/media/codecs/amrnb/dec/test/README.md
new file mode 100644
index 0000000..e9073e4
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/README.md
@@ -0,0 +1,39 @@
+## Media Testing ##
+---
+#### AMR-NB Decoder :
+The Amr-Nb Decoder Test Suite validates the amrnb decoder available in libstagefright.
+
+Run the following steps to build the test suite:
+```
+m AmrnbDecoderTest
+```
+
+The 32-bit binaries will be created in the following path : ${OUT}/data/nativetest/
+
+The 64-bit binaries will be created in the following path : ${OUT}/data/nativetest64/
+
+To test 64-bit binary push binaries from nativetest64.
+```
+adb push ${OUT}/data/nativetest64/AmrnbDecoderTest/AmrnbDecoderTest /data/local/tmp/
+```
+
+To test 32-bit binary push binaries from nativetest.
+```
+adb push ${OUT}/data/nativetest/AmrnbDecoderTest/AmrnbDecoderTest /data/local/tmp/
+```
+
+The resource file for the tests is taken from [here](https://storage.googleapis.com/android_media/frameworks/av/media/libstagefright/codecs/amrnb/dec/test/AmrnbDecoderTest.zip). Download, unzip and push these files into device for testing.
+
+```
+adb push AmrnbDecoderTestRes/. /data/local/tmp/
+```
+
+usage: AmrnbDecoderTest -P \<path_to_folder\>
+```
+adb shell /data/local/tmp/AmrnbDecoderTest -P /data/local/tmp/AmrnbDecoderTestRes/
+```
+Alternatively, the test can also be run using atest command.
+
+```
+atest AmrnbDecoderTest -- --enable-module-dynamic-download=true
+```
diff --git a/media/codecs/amrnb/dec/test/amrnbdec_test.cpp b/media/codecs/amrnb/dec/test/amrnbdec_test.cpp
new file mode 100644
index 0000000..621fda8
--- /dev/null
+++ b/media/codecs/amrnb/dec/test/amrnbdec_test.cpp
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <malloc.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <assert.h>
+
+#include "gsmamr_dec.h"
+#include <audio_utils/sndfile.h>
+
+// Constants for AMR-NB
+enum {
+ kInputBufferSize = 64,
+ kSamplesPerFrame = 160,
+ kBitsPerSample = 16,
+ kOutputBufferSize = kSamplesPerFrame * kBitsPerSample/8,
+ kSampleRate = 8000,
+ kChannels = 1,
+ kFileHeaderSize = 6
+};
+const uint32_t kFrameSizes[] = {12, 13, 15, 17, 19, 20, 26, 31};
+
+
+int main(int argc, char *argv[]) {
+
+ if(argc != 3) {
+ fprintf(stderr, "Usage %s <input file> <output file>\n", argv[0]);
+ return 1;
+ }
+
+ // Open the input file
+ FILE* fpInput = fopen(argv[1], "rb");
+ if (!fpInput) {
+ fprintf(stderr, "Could not open %s\n", argv[1]);
+ return 1;
+ }
+
+ // Validate the input AMR file
+ char header[kFileHeaderSize];
+ int bytesRead = fread(header, 1, kFileHeaderSize, fpInput);
+ if (bytesRead != kFileHeaderSize || memcmp(header, "#!AMR\n", kFileHeaderSize)) {
+ fprintf(stderr, "Invalid AMR-NB file\n");
+ fclose(fpInput);
+ return 1;
+ }
+
+ // Open the output file
+ SF_INFO sfInfo;
+ memset(&sfInfo, 0, sizeof(SF_INFO));
+ sfInfo.channels = kChannels;
+ sfInfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
+ sfInfo.samplerate = kSampleRate;
+ SNDFILE *handle = sf_open(argv[2], SFM_WRITE, &sfInfo);
+ if(!handle){
+ fprintf(stderr, "Could not create %s\n", argv[2]);
+ fclose(fpInput);
+ return 1;
+ }
+
+ // Create AMR-NB decoder instance
+ void* amrHandle;
+ int err = GSMInitDecode(&amrHandle, (Word8*)"AMRNBDecoder");
+ if(err != 0){
+ fprintf(stderr, "Error creating AMR-NB decoder instance\n");
+ fclose(fpInput);
+ sf_close(handle);
+ return 1;
+ }
+
+ //Allocate input buffer
+ void *inputBuf = malloc(kInputBufferSize);
+ assert(inputBuf != NULL);
+
+ //Allocate output buffer
+ void *outputBuf = malloc(kOutputBufferSize);
+ assert(outputBuf != NULL);
+
+
+ // Decode loop
+ uint32_t retVal = 0;
+ while (1) {
+ // Read mode
+ uint8_t mode;
+ bytesRead = fread(&mode, 1, 1, fpInput);
+ if (bytesRead != 1) break;
+
+ // Find frame type
+ Frame_Type_3GPP frameType = (Frame_Type_3GPP)((mode >> 3) & 0x0f);
+ if (frameType >= AMR_SID){
+ fprintf(stderr, "Frame type %d not supported\n",frameType);
+ retVal = 1;
+ break;
+ }
+
+ // Find frame type
+ int32_t frameSize = kFrameSizes[frameType];
+ bytesRead = fread(inputBuf, 1, frameSize, fpInput);
+ if (bytesRead != frameSize) break;
+
+ //Decode frame
+ int32_t decodeStatus;
+ decodeStatus = AMRDecode(amrHandle, frameType, (uint8_t*)inputBuf,
+ (int16_t*)outputBuf, MIME_IETF);
+ if(decodeStatus == -1) {
+ fprintf(stderr, "Decoder encountered error\n");
+ retVal = 1;
+ break;
+ }
+
+ //Write output to wav
+ sf_writef_short(handle, (int16_t*)outputBuf, kSamplesPerFrame);
+
+ }
+
+ // Close input and output file
+ fclose(fpInput);
+ sf_close(handle);
+
+ //Free allocated memory
+ free(inputBuf);
+ free(outputBuf);
+
+ // Close decoder instance
+ GSMDecodeFrameExit(&amrHandle);
+
+ return retVal;
+}