Merge changes I14498bf3,I719fc648,Iaea9338a am: 19abd4d485 am: f61b11b6b5
Change-Id: I519ff82c03f4dafbe2908e20aecba6f43b65697f
diff --git a/media/codec2/components/g711/Android.bp b/media/codec2/components/g711/Android.bp
index 3ede68c..0101b1a 100644
--- a/media/codec2/components/g711/Android.bp
+++ b/media/codec2/components/g711/Android.bp
@@ -7,6 +7,8 @@
srcs: ["C2SoftG711Dec.cpp"],
+ static_libs: ["codecs_g711dec"],
+
cflags: [
"-DALAW",
],
@@ -20,4 +22,6 @@
],
srcs: ["C2SoftG711Dec.cpp"],
+
+ static_libs: ["codecs_g711dec"],
}
diff --git a/media/codec2/components/g711/C2SoftG711Dec.cpp b/media/codec2/components/g711/C2SoftG711Dec.cpp
index 4ff0793..7f9c34e 100644
--- a/media/codec2/components/g711/C2SoftG711Dec.cpp
+++ b/media/codec2/components/g711/C2SoftG711Dec.cpp
@@ -22,7 +22,7 @@
#include <C2PlatformSupport.h>
#include <SimpleC2Interface.h>
-
+#include <g711Dec.h>
#include "C2SoftG711Dec.h"
namespace android {
@@ -224,53 +224,6 @@
return C2_OK;
}
-#ifdef ALAW
-void C2SoftG711Dec::DecodeALaw(
- int16_t *out, const uint8_t *in, size_t inSize) {
- while (inSize > 0) {
- inSize--;
- int32_t x = *in++;
-
- int32_t ix = x ^ 0x55;
- ix &= 0x7f;
-
- int32_t iexp = ix >> 4;
- int32_t mant = ix & 0x0f;
-
- if (iexp > 0) {
- mant += 16;
- }
-
- mant = (mant << 4) + 8;
-
- if (iexp > 1) {
- mant = mant << (iexp - 1);
- }
-
- *out++ = (x > 127) ? mant : -mant;
- }
-}
-#else
-void C2SoftG711Dec::DecodeMLaw(
- int16_t *out, const uint8_t *in, size_t inSize) {
- while (inSize > 0) {
- inSize--;
- int32_t x = *in++;
-
- int32_t mantissa = ~x;
- int32_t exponent = (mantissa >> 4) & 7;
- int32_t segment = exponent + 1;
- mantissa &= 0x0f;
-
- int32_t step = 4 << segment;
-
- int32_t abs = (0x80l << exponent) + step * mantissa + step / 2 - 4 * 33;
-
- *out++ = (x < 0x80) ? -abs : abs;
- }
-}
-#endif
-
class C2SoftG711DecFactory : public C2ComponentFactory {
public:
C2SoftG711DecFactory() : mHelper(std::static_pointer_cast<C2ReflectorHelper>(
diff --git a/media/codec2/components/g711/C2SoftG711Dec.h b/media/codec2/components/g711/C2SoftG711Dec.h
index 23e8ffc..f93840b 100644
--- a/media/codec2/components/g711/C2SoftG711Dec.h
+++ b/media/codec2/components/g711/C2SoftG711Dec.h
@@ -45,12 +45,6 @@
std::shared_ptr<IntfImpl> mIntf;
bool mSignalledOutputEos;
-#ifdef ALAW
- void DecodeALaw(int16_t *out, const uint8_t *in, size_t inSize);
-#else
- void DecodeMLaw(int16_t *out, const uint8_t *in, size_t inSize);
-#endif
-
C2_DO_NOT_COPY(C2SoftG711Dec);
};
diff --git a/media/codecs/g711/decoder/Android.bp b/media/codecs/g711/decoder/Android.bp
new file mode 100644
index 0000000..377833f
--- /dev/null
+++ b/media/codecs/g711/decoder/Android.bp
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+cc_library_static {
+ name: "codecs_g711dec",
+ vendor_available: true,
+ host_supported: true,
+
+ srcs: [
+ "g711DecAlaw.cpp",
+ "g711DecMlaw.cpp",
+ ],
+
+ export_include_dirs: ["."],
+
+ cflags: ["-Werror"],
+
+ sanitize: {
+ misc_undefined: [
+ "signed-integer-overflow",
+ "unsigned-integer-overflow",
+ ],
+ cfi: true,
+ },
+ apex_available: ["com.android.media.swcodec"],
+
+ target: {
+ darwin: {
+ enabled: false,
+ },
+ },
+}
diff --git a/media/codecs/g711/decoder/g711Dec.h b/media/codecs/g711/decoder/g711Dec.h
new file mode 100644
index 0000000..ca357a5
--- /dev/null
+++ b/media/codecs/g711/decoder/g711Dec.h
@@ -0,0 +1,41 @@
+/*
+ * 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.
+ */
+
+#ifndef G711_DEC_H_
+#define G711_DEC_H_
+
+/**
+ * @file g711Dec.h
+ * @brief g711 Decoder API: DecodeALaw and DecodeMLaw
+ */
+
+/** Decodes input bytes of size inSize according to ALAW
+ *
+ * @param [in] out <tt>int16_t*</tt>: output buffer to be filled with decoded bytes.
+ * @param [in] in <tt>const uint8_t*</tt>: input buffer containing bytes to be decoded.
+ * @param [in] inSize <tt>size_t</tt>: size of the input buffer.
+ */
+void DecodeALaw(int16_t *out, const uint8_t *in, size_t inSize);
+
+/** Decodes input bytes of size inSize according to MLAW
+ *
+ * @param [in] out <tt>int16_t*</tt>: output buffer to be filled with decoded bytes.
+ * @param [in] in <tt>const uint8_t*</tt>: input buffer containing bytes to be decoded.
+ * @param [in] inSize <tt>size_t</tt>: size of the input buffer.
+ */
+void DecodeMLaw(int16_t *out, const uint8_t *in, size_t inSize);
+
+#endif // G711_DECODER_H_
diff --git a/media/codecs/g711/decoder/g711DecAlaw.cpp b/media/codecs/g711/decoder/g711DecAlaw.cpp
new file mode 100644
index 0000000..e41a7b4
--- /dev/null
+++ b/media/codecs/g711/decoder/g711DecAlaw.cpp
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+void DecodeALaw(int16_t *out, const uint8_t *in, size_t inSize) {
+ if (out != nullptr && in != nullptr) {
+ while (inSize > 0) {
+ inSize--;
+ int32_t x = *in++;
+
+ int32_t ix = x ^ 0x55;
+ ix &= 0x7f;
+
+ int32_t iexp = ix >> 4;
+ int32_t mant = ix & 0x0f;
+
+ if (iexp > 0) {
+ mant += 16;
+ }
+
+ mant = (mant << 4) + 8;
+
+ if (iexp > 1) {
+ mant = mant << (iexp - 1);
+ }
+
+ *out++ = (x > 127) ? mant : -mant;
+ }
+ }
+}
diff --git a/media/codecs/g711/decoder/g711DecMlaw.cpp b/media/codecs/g711/decoder/g711DecMlaw.cpp
new file mode 100644
index 0000000..bb2caea
--- /dev/null
+++ b/media/codecs/g711/decoder/g711DecMlaw.cpp
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+void DecodeMLaw(int16_t *out, const uint8_t *in, size_t inSize) {
+ if (out != nullptr && in != nullptr) {
+ while (inSize > 0) {
+ inSize--;
+ int32_t x = *in++;
+
+ int32_t mantissa = ~x;
+ int32_t exponent = (mantissa >> 4) & 7;
+ int32_t segment = exponent + 1;
+ mantissa &= 0x0f;
+
+ int32_t step = 4 << segment;
+
+ int32_t abs = (0x80l << exponent) + step * mantissa + step / 2 - 4 * 33;
+
+ *out++ = (x < 0x80) ? -abs : abs;
+ }
+ }
+}
diff --git a/media/codecs/g711/fuzzer/Android.bp b/media/codecs/g711/fuzzer/Android.bp
new file mode 100644
index 0000000..1aee7f5
--- /dev/null
+++ b/media/codecs/g711/fuzzer/Android.bp
@@ -0,0 +1,44 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+ */
+
+cc_fuzz {
+ name: "g711alaw_dec_fuzzer",
+ host_supported: true,
+ srcs: [
+ "g711_dec_fuzzer.cpp",
+ ],
+ static_libs: [
+ "codecs_g711dec",
+ ],
+ cflags: [
+ "-DALAW",
+ ],
+}
+
+cc_fuzz {
+ name: "g711mlaw_dec_fuzzer",
+ host_supported: true,
+ srcs: [
+ "g711_dec_fuzzer.cpp",
+ ],
+ static_libs: [
+ "codecs_g711dec",
+ ],
+}
diff --git a/media/codecs/g711/fuzzer/README.md b/media/codecs/g711/fuzzer/README.md
new file mode 100644
index 0000000..0c1c36b
--- /dev/null
+++ b/media/codecs/g711/fuzzer/README.md
@@ -0,0 +1,49 @@
+# Fuzzer for libstagefright_g711dec decoder
+
+## Plugin Design Considerations
+The fuzzer plugin for G711 is designed based on the understanding of the
+codec and tries to achieve the following:
+
+##### Maximize code coverage
+G711 supports two types of decoding:
+1. DecodeALaw
+2. DecodeMLaw
+
+These two decoder API's are fuzzed separately using g711alaw_dec_fuzzer and
+g711mlaw_dec_fuzzer respectively.
+
+##### Maximize utilization of input data
+The plugin feeds the entire input data to the codec as expected by decoder API.
+
+## Build
+
+This describes steps to build g711alaw_dec_fuzzer and g711mlaw_dec_fuzzer binary.
+
+### Android
+
+#### Steps to build
+Build the fuzzer
+```
+ $ mm -j$(nproc) g711alaw_dec_fuzzer
+ $ mm -j$(nproc) g711mlaw_dec_fuzzer
+```
+
+#### Steps to run
+Create a directory CORPUS_DIR and copy some g711 files to that folder
+Push this directory to device.
+
+To run on device
+```
+ $ adb sync data
+ $ adb shell /data/fuzz/arm64/g711alaw_dec_fuzzer/g711alaw_dec_fuzzer CORPUS_DIR
+ $ adb shell /data/fuzz/arm64/g711mlaw_dec_fuzzer/g711mlaw_dec_fuzzer CORPUS_DIR
+```
+To run on host
+```
+ $ $ANDROID_HOST_OUT/fuzz/x86_64/g711alaw_dec_fuzzer/g711alaw_dec_fuzzer CORPUS_DIR
+ $ $ANDROID_HOST_OUT/fuzz/x86_64/g711mlaw_dec_fuzzer/g711mlaw_dec_fuzzer CORPUS_DIR
+```
+
+## References:
+ * http://llvm.org/docs/LibFuzzer.html
+ * https://github.com/google/oss-fuzz
diff --git a/media/codecs/g711/fuzzer/g711_dec_fuzzer.cpp b/media/codecs/g711/fuzzer/g711_dec_fuzzer.cpp
new file mode 100644
index 0000000..adfbcf5
--- /dev/null
+++ b/media/codecs/g711/fuzzer/g711_dec_fuzzer.cpp
@@ -0,0 +1,58 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include "g711Dec.h"
+
+class Codec {
+ public:
+ Codec() = default;
+ ~Codec() = default;
+ void decodeFrames(const uint8_t *data, size_t size);
+};
+
+void Codec::decodeFrames(const uint8_t *data, size_t size) {
+ size_t outputBufferSize = sizeof(int16_t) * size;
+ int16_t *out = new int16_t[outputBufferSize];
+ if (!out) {
+ return;
+ }
+#ifdef ALAW
+ DecodeALaw(out, data, size);
+#else
+ DecodeMLaw(out, data, size);
+#endif
+ delete[] out;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+ if (size < 1) {
+ return 0;
+ }
+ Codec *codec = new Codec();
+ if (!codec) {
+ return 0;
+ }
+ codec->decodeFrames(data, size);
+ delete codec;
+ return 0;
+}