forked from luck/tmp_suning_uos_patched
1da177e4c3
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!
80 lines
3.6 KiB
C
80 lines
3.6 KiB
C
|
|
/*
|
|
*
|
|
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
|