Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/isdn/hardware/eicon/capidtmf.h b/drivers/isdn/hardware/eicon/capidtmf.h
new file mode 100644
index 0000000..242048f
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/capidtmf.h
@@ -0,0 +1,79 @@
+
+/*
+ *
+ Copyright (c) Eicon Networks, 2002.
+ *
+ This source file is supplied for the use with
+ Eicon Networks range of DIVA Server Adapters.
+ *
+ Eicon File Revision : 2.1
+ *
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+ *
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
+ implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+ *
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#ifndef CAPIDTMF_H_
+#define CAPIDTMF_H_
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+#define CAPIDTMF_TONE_GROUP_COUNT 2
+#define CAPIDTMF_LOW_GROUP_FREQUENCIES 4
+#define CAPIDTMF_HIGH_GROUP_FREQUENCIES 4
+#define DSPDTMF_RX_SENSITIVITY_LOW_DEFAULT 50 /* -52 dBm */
+#define DSPDTMF_RX_SENSITIVITY_HIGH_DEFAULT 50 /* -52 dBm */
+#define DSPDTMF_RX_HIGH_EXCEEDING_LOW_DEFAULT 10 /* dB */
+#define DSPDTMF_RX_LOW_EXCEEDING_HIGH_DEFAULT 10 /* dB */
+#define DSPDTMF_RX_HARMONICS_SEL_DEFAULT 12 /* dB */
+#define CAPIDTMF_RECV_BASE_FREQUENCY_COUNT (CAPIDTMF_LOW_GROUP_FREQUENCIES + CAPIDTMF_HIGH_GROUP_FREQUENCIES)
+#define CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT 8
+#define CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT (CAPIDTMF_RECV_BASE_FREQUENCY_COUNT + CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT)
+#define CAPIDTMF_RECV_POSITIVE_COEFF_COUNT 16
+#define CAPIDTMF_RECV_NEGATIVE_COEFF_COUNT (CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT - CAPIDTMF_RECV_POSITIVE_COEFF_COUNT)
+#define CAPIDTMF_RECV_ACCUMULATE_CYCLES 205
+#define CAPIDTMF_RECV_FUNDAMENTAL_OFFSET (0xff35L * 2)
+#define CAPIDTMF_RECV_FUNDAMENTAL_DECREMENT (0x0028L * 2)
+#define CAPIDTMF_RECV_DIGIT_BUFFER_SIZE 32
+#define CAPIDTMF_RECV_STATE_IDLE 0x00
+#define CAPIDTMF_RECV_STATE_DTMF_ACTIVE 0x01
+typedef struct tag_capidtmf_recv_state
+{
+ byte digit_buffer[CAPIDTMF_RECV_DIGIT_BUFFER_SIZE];
+ word digit_write_pos;
+ word digit_read_pos;
+ word indication_state;
+ word indication_state_ack;
+ long goertzel_buffer[2][CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT];
+ word min_gap_duration;
+ word min_digit_duration;
+ word cycle_counter;
+ word current_digit_on_time;
+ word current_digit_off_time;
+ byte current_digit_value;
+ byte state;
+} t_capidtmf_recv_state;
+typedef struct tag_capidtmf_state
+{
+ byte ulaw;
+ t_capidtmf_recv_state recv;
+} t_capidtmf_state;
+word capidtmf_recv_indication (t_capidtmf_state *p_state, byte *buffer);
+void capidtmf_recv_block (t_capidtmf_state *p_state, byte *buffer, word length);
+void capidtmf_init (t_capidtmf_state *p_state, byte ulaw);
+void capidtmf_recv_enable (t_capidtmf_state *p_state, word min_digit_duration, word min_gap_duration);
+void capidtmf_recv_disable (t_capidtmf_state *p_state);
+#define capidtmf_indication(p_state,buffer) (((p_state)->recv.indication_state != (p_state)->recv.indication_state_ack) ? capidtmf_recv_indication (p_state, buffer) : 0)
+#define capidtmf_recv_process_block(p_state,buffer,length) { if ((p_state)->recv.state != CAPIDTMF_RECV_STATE_IDLE) capidtmf_recv_block (p_state, buffer, length); }
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+#endif