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5
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1 /*
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2 * SpanDSP - a series of DSP components for telephony
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3 *
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4 * t38_gateway_to_terminal_tests.c - Joint tests for the T.38 FoIP terminal and gateway modules.
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5 *
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6 * Written by Steve Underwood <steveu@coppice.org>
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7 *
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8 * Copyright (C) 2005, 2006 Steve Underwood
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9 *
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10 * All rights reserved.
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11 *
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12 * This program is free software; you can redistribute it and/or modify
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13 * it under the terms of the GNU General Public License version 2, as
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14 * published by the Free Software Foundation.
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15 *
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16 * This program is distributed in the hope that it will be useful,
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17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 * GNU General Public License for more details.
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20 *
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21 * You should have received a copy of the GNU General Public License
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22 * along with this program; if not, write to the Free Software
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23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 *
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25 * $Id: t38_gateway_to_terminal_tests.c,v 1.31 2006/12/09 04:56:20 steveu Exp $
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26 */
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27
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28 /*! \file */
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29
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30 /*! \page t38_gateway_to_terminal_tests_page T.38 mixed gateway and termination tests
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31 \section t38_gateway_to_terminal_tests_page_sec_1 What does it do?
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32 These tests exercise the path
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33
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34 FAX machine -> T.38 gateway -> T.38 termination
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35 */
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36
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37 #ifdef HAVE_CONFIG_H
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38 #include <config.h>
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39 #endif
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40
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41 #include <inttypes.h>
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42 #include <stdlib.h>
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43 #include <stdio.h>
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44 #include <fcntl.h>
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45 #include <string.h>
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46 #if defined(HAVE_TGMATH_H)
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47 #include <tgmath.h>
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48 #endif
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49 #if defined(HAVE_MATH_H)
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50 #include <math.h>
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51 #endif
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52 #include <assert.h>
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53 #include <errno.h>
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54 #include <sys/socket.h>
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55 #include <netinet/in.h>
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56 #include <netinet/tcp.h>
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57 #define __USE_MISC
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58 #include <arpa/inet.h>
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59 #include <sys/select.h>
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60 #include <sys/time.h>
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61 #include <audiofile.h>
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62 #include <tiffio.h>
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63
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64 #include "spandsp.h"
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65
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66 #include "ip_network_model.h"
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67
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68 #define SAMPLES_PER_CHUNK 160
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69
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70 #define INPUT_FILE_NAME "../itutests/fax/itutests.tif"
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71 #define OUTPUT_FILE_NAME "t38.tif"
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72 #define OUTPUT_FILE_NAME_WAVE "t38_gateway_to_terminal.wav"
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73
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74 fax_state_t fax_state_a;
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75 t38_gateway_state_t t38_state_a;
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76 t38_terminal_state_t t38_state_b;
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77
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78 ip_network_model_state_t *path_a_to_b;
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79 ip_network_model_state_t *path_b_to_a;
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80
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81 int done[2] = {FALSE, FALSE};
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82 int succeeded[2] = {FALSE, FALSE};
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83
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84 static void phase_b_handler(t30_state_t *s, void *user_data, int result)
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85 {
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86 int i;
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87
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88 i = (int) (intptr_t) user_data;
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89 printf("%c: Phase B handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
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90 }
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91 /*- End of function --------------------------------------------------------*/
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92
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93 static void phase_d_handler(t30_state_t *s, void *user_data, int result)
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94 {
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95 int i;
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96 t30_stats_t t;
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97 char ident[21];
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98
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99 i = (int) (intptr_t) user_data;
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100 printf("%c: Phase D handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
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101 t30_get_transfer_statistics(s, &t);
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102 printf("%c: Phase D: bit rate %d\n", i, t.bit_rate);
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103 printf("%c: Phase D: ECM %s\n", i, (t.error_correcting_mode) ? "on" : "off");
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104 printf("%c: Phase D: pages transferred %d\n", i, t.pages_transferred);
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105 printf("%c: Phase D: image size %d x %d\n", i, t.width, t.length);
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106 printf("%c: Phase D: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
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107 printf("%c: Phase D: bad rows %d\n", i, t.bad_rows);
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108 printf("%c: Phase D: longest bad row run %d\n", i, t.longest_bad_row_run);
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109 printf("%c: Phase D: coding method %s\n", i, t4_encoding_to_str(t.encoding));
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110 printf("%c: Phase D: image size %d\n", i, t.image_size);
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111 t30_get_local_ident(s, ident);
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112 printf("%c: Phase D: local ident '%s'\n", i, ident);
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113 t30_get_far_ident(s, ident);
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114 printf("%c: Phase D: remote ident '%s'\n", i, ident);
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115 }
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116 /*- End of function --------------------------------------------------------*/
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117
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118 static void phase_e_handler(t30_state_t *s, void *user_data, int result)
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119 {
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120 int i;
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121 t30_stats_t t;
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122 char ident[21];
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123
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124 i = (int) (intptr_t) user_data;
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125 printf("%c: Phase E handler on channel %c - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));
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126 t30_get_transfer_statistics(s, &t);
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127 printf("%c: Phase E: bit rate %d\n", i, t.bit_rate);
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128 printf("%c: Phase E: ECM %s\n", i, (t.error_correcting_mode) ? "on" : "off");
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129 printf("%c: Phase E: pages transferred %d\n", i, t.pages_transferred);
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130 printf("%c: Phase E: image size %d x %d\n", i, t.width, t.length);
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131 printf("%c: Phase E: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
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132 printf("%c: Phase E: bad rows %d\n", i, t.bad_rows);
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133 printf("%c: Phase E: longest bad row run %d\n", i, t.longest_bad_row_run);
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134 printf("%c: Phase E: coding method %s\n", i, t4_encoding_to_str(t.encoding));
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135 printf("%c: Phase E: image size %d bytes\n", i, t.image_size);
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136 t30_get_local_ident(s, ident);
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137 printf("%c: Phase E: local ident '%s'\n", i, ident);
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138 t30_get_far_ident(s, ident);
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139 printf("%c: Phase E: remote ident '%s'\n", i, ident);
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140 succeeded[i - 'A'] = (result == T30_ERR_OK) && (t.pages_transferred == 12);
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141 done[i - 'A'] = TRUE;
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142 }
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143 /*- End of function --------------------------------------------------------*/
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144
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145 static int tx_packet_handler_a(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
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146 {
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147 t38_terminal_state_t *t;
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148
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149 /* This routine queues messages between two instances of T.38 processing */
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150 t = (t38_terminal_state_t *) user_data;
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151 span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
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152
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153 ip_network_model_send(path_a_to_b, s->tx_seq_no, count, buf, len);
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154 return 0;
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155 }
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156 /*- End of function --------------------------------------------------------*/
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157
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158 static int tx_packet_handler_b(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
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159 {
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160 t38_gateway_state_t *t;
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161
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162 /* This routine queues messages between two instances of T.38 processing */
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163 t = (t38_gateway_state_t *) user_data;
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164 span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
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165
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166 ip_network_model_send(path_b_to_a, s->tx_seq_no, count, buf, len);
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167 return 0;
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168 }
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169 /*- End of function --------------------------------------------------------*/
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170
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171 int main(int argc, char *argv[])
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172 {
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173 int16_t t38_amp_a[SAMPLES_PER_CHUNK];
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174 int16_t t30_amp_a[SAMPLES_PER_CHUNK];
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175 int16_t out_amp[2*SAMPLES_PER_CHUNK];
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176 int t38_len_a;
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177 int t30_len_a;
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178 int msg_len;
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179 uint8_t msg[1024];
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180 int log_audio;
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181 int outframes;
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182 int t38_version;
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183 int use_ecm;
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184 AFfilesetup filesetup;
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185 AFfilehandle wave_handle;
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186 const char *input_file_name;
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187 int i;
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188 int seq_no;
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189
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190 log_audio = FALSE;
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191 t38_version = 1;
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192 use_ecm = FALSE;
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193 input_file_name = INPUT_FILE_NAME;
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194 for (i = 1; i < argc; i++)
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195 {
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196 if (strcmp(argv[i], "-e") == 0)
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197 {
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198 use_ecm = TRUE;
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199 continue;
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200 }
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201 if (strcmp(argv[i], "-i") == 0)
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202 {
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203 i++;
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204 input_file_name = argv[i];
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205 continue;
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206 }
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207 if (strcmp(argv[i], "-l") == 0)
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208 {
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209 log_audio = TRUE;
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210 continue;
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211 }
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212 if (strcmp(argv[i], "-v") == 0)
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213 {
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214 i++;
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215 t38_version = atoi(argv[i]);
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216 continue;
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217 }
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218 }
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219
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220 printf("Using T.38 version %d\n", t38_version);
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221 if (use_ecm)
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222 printf("Using ECM\n");
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223
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224 filesetup = AF_NULL_FILESETUP;
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225 wave_handle = AF_NULL_FILEHANDLE;
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226 if (log_audio)
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227 {
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228 if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
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229 {
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230 fprintf(stderr, " Failed to create file setup\n");
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231 exit(2);
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232 }
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233 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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234 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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235 afInitFileFormat(filesetup, AF_FILE_WAVE);
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236 afInitChannels(filesetup, AF_DEFAULT_TRACK, 2);
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237
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238 wave_handle = afOpenFile(OUTPUT_FILE_NAME_WAVE, "w", filesetup);
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239 if (wave_handle == AF_NULL_FILEHANDLE)
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240 {
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241 fprintf(stderr, " Cannot create wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
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242 exit(2);
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243 }
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244 }
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245
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246 if ((path_a_to_b = ip_network_model_init(800, 2000, 0)) == NULL)
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247 {
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248 fprintf(stderr, "Failed to start IP network path model\n");
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249 exit(2);
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250 }
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251 if ((path_b_to_a = ip_network_model_init(800, 2000, 0)) == NULL)
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252 {
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253 fprintf(stderr, "Failed to start IP network path model\n");
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254 exit(2);
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255 }
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256
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257 fax_init(&fax_state_a, TRUE);
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258 t30_set_local_ident(&fax_state_a.t30_state, "11111111");
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259 t30_set_tx_file(&fax_state_a.t30_state, input_file_name, -1, -1);
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260 t30_set_phase_b_handler(&fax_state_a.t30_state, phase_b_handler, (void *) (intptr_t) 'A');
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261 t30_set_phase_d_handler(&fax_state_a.t30_state, phase_d_handler, (void *) (intptr_t) 'A');
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262 t30_set_phase_e_handler(&fax_state_a.t30_state, phase_e_handler, (void *) (intptr_t) 'A');
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263 t30_set_ecm_capability(&fax_state_a.t30_state, use_ecm);
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264 if (use_ecm)
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265 t30_set_supported_compressions(&fax_state_a.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
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266 span_log_set_level(&fax_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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267 span_log_set_tag(&fax_state_a.logging, "FAX-A ");
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268 span_log_set_level(&fax_state_a.t30_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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269 span_log_set_tag(&fax_state_a.t30_state.logging, "FAX-A ");
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270 memset(t30_amp_a, 0, sizeof(t30_amp_a));
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271
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272 if (t38_gateway_init(&t38_state_a, tx_packet_handler_a, &t38_state_b) == NULL)
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273 {
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274 fprintf(stderr, "Cannot start the T.38 channel\n");
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275 exit(2);
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276 }
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277 t38_set_t38_version(&t38_state_a.t38, t38_version);
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278 t38_gateway_ecm_control(&t38_state_a, use_ecm);
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279 span_log_set_level(&t38_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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280 span_log_set_tag(&t38_state_a.logging, "T.38-A");
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281 span_log_set_level(&t38_state_a.t38.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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282 span_log_set_tag(&t38_state_a.t38.logging, "T.38-A");
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283 memset(t38_amp_a, 0, sizeof(t38_amp_a));
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284
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285 if (t38_terminal_init(&t38_state_b, FALSE, tx_packet_handler_b, &t38_state_a) == NULL)
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286 {
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287 fprintf(stderr, "Cannot start the T.38 channel\n");
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288 exit(2);
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289 }
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290 t38_set_t38_version(&t38_state_b.t38, t38_version);
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291 span_log_set_level(&t38_state_b.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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292 span_log_set_tag(&t38_state_b.logging, "T.38-B");
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293 span_log_set_level(&t38_state_b.t38.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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294 span_log_set_tag(&t38_state_b.t38.logging, "T.38-B");
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295 span_log_set_level(&t38_state_b.t30_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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296 span_log_set_tag(&t38_state_b.t30_state.logging, "T.38-B");
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297
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298 t30_set_local_ident(&t38_state_b.t30_state, "22222222");
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299 t30_set_rx_file(&t38_state_b.t30_state, OUTPUT_FILE_NAME, -1);
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300 t30_set_phase_b_handler(&t38_state_b.t30_state, phase_b_handler, (void *) (intptr_t) 'B');
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301 t30_set_phase_d_handler(&t38_state_b.t30_state, phase_d_handler, (void *) (intptr_t) 'B');
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302 t30_set_phase_e_handler(&t38_state_b.t30_state, phase_e_handler, (void *) (intptr_t) 'B');
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303 t30_set_ecm_capability(&t38_state_b.t30_state, use_ecm);
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304 if (use_ecm)
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305 t30_set_supported_compressions(&t38_state_b.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
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306
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307 for (;;)
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308 {
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309 span_log_bump_samples(&fax_state_a.logging, SAMPLES_PER_CHUNK);
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310 span_log_bump_samples(&fax_state_a.t30_state.logging, SAMPLES_PER_CHUNK);
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311 span_log_bump_samples(&t38_state_a.logging, SAMPLES_PER_CHUNK);
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312 span_log_bump_samples(&t38_state_a.t38.logging, SAMPLES_PER_CHUNK);
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313 span_log_bump_samples(&t38_state_b.logging, SAMPLES_PER_CHUNK);
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314 span_log_bump_samples(&t38_state_b.t38.logging, SAMPLES_PER_CHUNK);
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315 span_log_bump_samples(&t38_state_b.t30_state.logging, SAMPLES_PER_CHUNK);
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316 memset(out_amp, 0, sizeof(out_amp));
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317
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318 t38_terminal_send_timeout(&t38_state_b, SAMPLES_PER_CHUNK);
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319
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320 t30_len_a = fax_tx(&fax_state_a, t30_amp_a, SAMPLES_PER_CHUNK);
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321 /* The receive side always expects a full block of samples, but the
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322 transmit side may not be sending any when it doesn't need to. We
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323 may need to pad with some silence. */
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324 if (t30_len_a < SAMPLES_PER_CHUNK)
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325 {
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326 memset(t30_amp_a + t30_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_a));
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327 t30_len_a = SAMPLES_PER_CHUNK;
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328 }
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329 if (log_audio)
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330 {
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331 for (i = 0; i < t30_len_a; i++)
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332 out_amp[2*i] = t30_amp_a[i];
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333 }
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334 if (t38_gateway_rx(&t38_state_a, t30_amp_a, t30_len_a))
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335 break;
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336
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337 t38_len_a = t38_gateway_tx(&t38_state_a, t38_amp_a, SAMPLES_PER_CHUNK);
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338 if (t38_len_a < SAMPLES_PER_CHUNK)
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339 {
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340 memset(t38_amp_a + t38_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_a));
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341 t38_len_a = SAMPLES_PER_CHUNK;
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342 }
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343 if (log_audio)
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344 {
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345 for (i = 0; i < t38_len_a; i++)
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346 out_amp[2*i + 1] = t38_amp_a[i];
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347 }
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348 if (fax_rx(&fax_state_a, t38_amp_a, SAMPLES_PER_CHUNK))
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349 break;
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350
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351 while ((msg_len = ip_network_model_get(path_a_to_b, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
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352 t38_core_rx_ifp_packet(&t38_state_b.t38, seq_no, msg, msg_len);
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353 while ((msg_len = ip_network_model_get(path_b_to_a, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
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354 t38_core_rx_ifp_packet(&t38_state_a.t38, seq_no, msg, msg_len);
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355
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356 if (log_audio)
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357 {
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358 outframes = afWriteFrames(wave_handle, AF_DEFAULT_TRACK, out_amp, SAMPLES_PER_CHUNK);
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359 if (outframes != SAMPLES_PER_CHUNK)
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360 break;
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361 }
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362
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363 if (done[0] && done[1])
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364 break;
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365 }
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366 if (log_audio)
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367 {
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368 if (afCloseFile(wave_handle) != 0)
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369 {
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370 fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
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371 exit(2);
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372 }
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373 afFreeFileSetup(filesetup);
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374 }
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375 if (!succeeded[0] || !succeeded[1])
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376 {
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377 printf("Tests failed\n");
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378 exit(2);
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379 }
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380 printf("Tests passed\n");
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381 return 0;
|
|
|
382 }
|
|
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383 /*- End of function --------------------------------------------------------*/
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384 /*- End of file ------------------------------------------------------------*/
|
