spandsp 0.0.6
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00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * private/v8.h - V.8 modem negotiation processing. 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2004 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU Lesser General Public License version 2.1, 00014 * as published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Lesser General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU Lesser General Public 00022 * License along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 */ 00025 00026 #if !defined(_SPANDSP_PRIVATE_V8_H_) 00027 #define _SPANDSP_PRIVATE_V8_H_ 00028 00029 struct v8_state_s 00030 { 00031 /*! \brief TRUE if we are the calling party */ 00032 int calling_party; 00033 00034 /*! \brief A handler to process the V.8 signals */ 00035 v8_result_handler_t *result_handler; 00036 /*! \brief An opaque pointer passed to result_handler */ 00037 void *result_handler_user_data; 00038 00039 /*! \brief The current state of the V.8 protocol */ 00040 int state; 00041 int fsk_tx_on; 00042 int modem_connect_tone_tx_on; 00043 int negotiation_timer; 00044 int ci_timer; 00045 int ci_count; 00046 fsk_tx_state_t v21tx; 00047 fsk_rx_state_t v21rx; 00048 queue_state_t *tx_queue; 00049 modem_connect_tones_tx_state_t ansam_tx; 00050 modem_connect_tones_rx_state_t ansam_rx; 00051 00052 v8_parms_t parms; 00053 v8_parms_t result; 00054 00055 /*! \brief The number of modulation bytes to use when sending. */ 00056 int modulation_bytes; 00057 00058 /* V.8 data parsing */ 00059 uint32_t bit_stream; 00060 int bit_cnt; 00061 /* Indicates the type of message coming up */ 00062 int preamble_type; 00063 uint8_t rx_data[64]; 00064 int rx_data_ptr; 00065 00066 /*! \brief a reference copy of the last CM or JM message, used when 00067 testing for matches. */ 00068 uint8_t cm_jm_data[64]; 00069 int cm_jm_len; 00070 int got_cm_jm; 00071 int got_cj; 00072 int zero_byte_count; 00073 /*! \brief Error and flow logging control */ 00074 logging_state_t logging; 00075 }; 00076 00077 #endif 00078 /*- End of file ------------------------------------------------------------*/