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 * $Id: v8.h,v 1.1 2008/10/13 13:14:01 steveu Exp $ 00026 */ 00027 00028 #if !defined(_SPANDSP_PRIVATE_V8_H_) 00029 #define _SPANDSP_PRIVATE_V8_H_ 00030 00031 struct v8_state_s 00032 { 00033 /*! \brief TRUE if we are the calling modem */ 00034 int caller; 00035 /*! \brief The current state of the V8 protocol */ 00036 int state; 00037 int negotiation_timer; 00038 int ci_timer; 00039 int ci_count; 00040 fsk_tx_state_t v21tx; 00041 fsk_rx_state_t v21rx; 00042 queue_state_t *tx_queue; 00043 modem_connect_tones_tx_state_t ansam_tx; 00044 modem_connect_tones_rx_state_t ansam_rx; 00045 00046 v8_result_handler_t *result_handler; 00047 void *result_handler_user_data; 00048 00049 /*! \brief Modulation schemes available at this end. */ 00050 int available_modulations; 00051 int common_modulations; 00052 int negotiated_modulation; 00053 int far_end_modulations; 00054 00055 int call_function; 00056 int protocol; 00057 int pstn_access; 00058 int nsf_seen; 00059 int pcm_modem_availability; 00060 int t66_seen; 00061 00062 /* V8 data parsing */ 00063 unsigned int bit_stream; 00064 int bit_cnt; 00065 /* Indicates the type of message coming up */ 00066 int preamble_type; 00067 uint8_t rx_data[64]; 00068 int rx_data_ptr; 00069 00070 /*! \brief a reference copy of the last CM or JM message, used when 00071 testing for matches. */ 00072 uint8_t cm_jm_data[64]; 00073 int cm_jm_count; 00074 int got_cm_jm; 00075 int got_cj; 00076 int zero_byte_count; 00077 /*! \brief Error and flow logging control */ 00078 logging_state_t logging; 00079 }; 00080 00081 #endif 00082 /*- End of file ------------------------------------------------------------*/