96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* data_modems.h - definitions for the analogue modem set for data processing
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2011 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 2.1,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*! \file */
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#if !defined(_SPANDSP_DATA_MODEMS_H_)
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#define _SPANDSP_DATA_MODEMS_H_
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enum
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{
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DATA_MODEM_NONE = -1,
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DATA_MODEM_FLUSH = 0,
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DATA_MODEM_SILENCE,
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DATA_MODEM_CED_TONE,
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DATA_MODEM_CNG_TONE,
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DATA_MODEM_V8,
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DATA_MODEM_BELL103,
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DATA_MODEM_BELL202,
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DATA_MODEM_V21,
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DATA_MODEM_V23,
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DATA_MODEM_V22BIS,
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DATA_MODEM_V32BIS,
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DATA_MODEM_V34
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};
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/*!
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The set of modems needed for data, plus the auxilliary stuff, like tone generation.
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*/
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typedef struct data_modems_state_s data_modems_state_t;
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/* N.B. the following are currently a work in progress */
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SPAN_DECLARE(const char *) data_modems_modulation_to_str(int modulation_scheme);
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SPAN_DECLARE(void) data_modems_set_tep_mode(data_modems_state_t *s, int use_tep);
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SPAN_DECLARE(logging_state_t *) data_modems_get_logging_state(data_modems_state_t *s);
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SPAN_DECLARE(int) data_modems_restart(data_modems_state_t *s);
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SPAN_DECLARE(void) data_modems_set_async_mode(data_modems_state_t *s,
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int data_bits,
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int parity_bits,
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int stop_bits);
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SPAN_DECLARE(void) data_modems_set_modem_type(data_modems_state_t *s, int which, int baud_rate, int bit_rate);
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SPAN_DECLARE(int) data_modems_rx(data_modems_state_t *s, const int16_t amp[], int len);
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SPAN_DECLARE(int) data_modems_rx_fillin(data_modems_state_t *s, int len);
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SPAN_DECLARE(int) data_modems_tx(data_modems_state_t *s, int16_t amp[], int max_len);
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SPAN_DECLARE(data_modems_state_t *) data_modems_init(data_modems_state_t *s,
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bool calling_party,
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put_msg_func_t put_msg,
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get_msg_func_t get_msg,
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void *user_data);
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SPAN_DECLARE(int) data_modems_release(data_modems_state_t *s);
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SPAN_DECLARE(int) data_modems_free(data_modems_state_t *s);
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/*- End of file ------------------------------------------------------------*/
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