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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_tests.c - Tests for the T.38 FoIP gateway module.
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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_tests.c,v 1.38 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_tests_page T.38 gateway tests tests
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31 \section t38_gateway_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 gateway <-> FAX machine
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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.wav"
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73 #define OUTPUT_FILE_NAME_T30A "t38_gateway_t30a.wav"
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74 #define OUTPUT_FILE_NAME_T38A "t38_gateway_t38a.wav"
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75 #define OUTPUT_FILE_NAME_T30B "t38_gateway_t30b.wav"
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76 #define OUTPUT_FILE_NAME_T38B "t38_gateway_t38b.wav"
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77
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78 fax_state_t fax_state_a;
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79 t38_gateway_state_t t38_state_a;
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80 t38_gateway_state_t t38_state_b;
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81 fax_state_t fax_state_b;
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82
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83 ip_network_model_state_t *path_a_to_b;
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84 ip_network_model_state_t *path_b_to_a;
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85
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86 int done[2] = {FALSE, FALSE};
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87 int succeeded[2] = {FALSE, FALSE};
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88
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89 static void phase_b_handler(t30_state_t *s, void *user_data, int result)
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90 {
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91 int i;
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92
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93 i = (int) (intptr_t) user_data;
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94 printf("%c: Phase B handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
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95 }
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96 /*- End of function --------------------------------------------------------*/
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97
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98 static void phase_d_handler(t30_state_t *s, void *user_data, int result)
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99 {
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100 int i;
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101 t30_stats_t t;
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102 char ident[21];
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103
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104 i = (int) (intptr_t) user_data;
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105 printf("%c: Phase D handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
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106 t30_get_transfer_statistics(s, &t);
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107 printf("%c: Phase D: bit rate %d\n", i, t.bit_rate);
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108 printf("%c: Phase D: ECM %s\n", i, (t.error_correcting_mode) ? "on" : "off");
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109 printf("%c: Phase D: pages transferred %d\n", i, t.pages_transferred);
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110 printf("%c: Phase D: image size %d x %d\n", i, t.width, t.length);
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111 printf("%c: Phase D: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
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112 printf("%c: Phase D: bad rows %d\n", i, t.bad_rows);
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113 printf("%c: Phase D: longest bad row run %d\n", i, t.longest_bad_row_run);
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114 printf("%c: Phase D: coding method %s\n", i, t4_encoding_to_str(t.encoding));
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115 printf("%c: Phase D: image size %d\n", i, t.image_size);
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116 t30_get_local_ident(s, ident);
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117 printf("%c: Phase D: local ident '%s'\n", i, ident);
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118 t30_get_far_ident(s, ident);
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119 printf("%c: Phase D: remote ident '%s'\n", i, ident);
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120 }
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121 /*- End of function --------------------------------------------------------*/
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122
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123 static void phase_e_handler(t30_state_t *s, void *user_data, int result)
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124 {
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125 int i;
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126 t30_stats_t t;
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127 char ident[21];
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128
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129 i = (int) (intptr_t) user_data;
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130 printf("%c: Phase E handler on channel %c - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));
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131 t30_get_transfer_statistics(s, &t);
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132 printf("%c: Phase E: bit rate %d\n", i, t.bit_rate);
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133 printf("%c: Phase E: ECM %s\n", i, (t.error_correcting_mode) ? "on" : "off");
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134 printf("%c: Phase E: pages transferred %d\n", i, t.pages_transferred);
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135 printf("%c: Phase E: image size %d x %d\n", i, t.width, t.length);
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136 printf("%c: Phase E: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
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137 printf("%c: Phase E: bad rows %d\n", i, t.bad_rows);
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138 printf("%c: Phase E: longest bad row run %d\n", i, t.longest_bad_row_run);
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139 printf("%c: Phase E: coding method %s\n", i, t4_encoding_to_str(t.encoding));
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140 printf("%c: Phase E: image size %d bytes\n", i, t.image_size);
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141 t30_get_local_ident(s, ident);
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142 printf("%c: Phase E: local ident '%s'\n", i, ident);
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143 t30_get_far_ident(s, ident);
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144 printf("%c: Phase E: remote ident '%s'\n", i, ident);
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145 succeeded[i - 'A'] = (result == T30_ERR_OK) && (t.pages_transferred == 12);
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146 done[i - 'A'] = TRUE;
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147 }
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148 /*- End of function --------------------------------------------------------*/
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149
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150 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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151 {
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152 t38_gateway_state_t *t;
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153
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154 /* This routine queues messages between two instances of T.38 processing */
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155 t = (t38_gateway_state_t *) user_data;
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156 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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157
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158 ip_network_model_send(path_a_to_b, s->tx_seq_no, count, buf, len);
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159 return 0;
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160 }
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161 /*- End of function --------------------------------------------------------*/
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162
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163 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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164 {
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165 t38_gateway_state_t *t;
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166
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167 /* This routine queues messages between two instances of T.38 processing */
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168 t = (t38_gateway_state_t *) user_data;
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169 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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170
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171 ip_network_model_send(path_b_to_a, s->tx_seq_no, count, buf, len);
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172 return 0;
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173 }
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174 /*- End of function --------------------------------------------------------*/
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175
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176 int main(int argc, char *argv[])
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177 {
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178 int16_t silence[SAMPLES_PER_CHUNK];
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179 int16_t t30_amp_a[SAMPLES_PER_CHUNK];
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180 int16_t t38_amp_a[SAMPLES_PER_CHUNK];
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181 int16_t t38_amp_b[SAMPLES_PER_CHUNK];
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182 int16_t t30_amp_b[SAMPLES_PER_CHUNK];
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183 int16_t out_amp[SAMPLES_PER_CHUNK*4];
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184 int t30_len_a;
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185 int t38_len_a;
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186 int t38_len_b;
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187 int t30_len_b;
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188 int log_audio;
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189 int msg_len;
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190 uint8_t msg[1024];
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191 int outframes;
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192 AFfilesetup filesetup;
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193 AFfilehandle wave_handle;
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194 int use_ecm;
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195 int t38_version;
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196 const char *input_file_name;
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197 int i;
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198 int seq_no;
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199
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200 log_audio = FALSE;
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201 use_ecm = FALSE;
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202 t38_version = 1;
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203 input_file_name = INPUT_FILE_NAME;
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204 for (i = 1; i < argc; i++)
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205 {
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206 if (strcmp(argv[i], "-e") == 0)
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207 {
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208 use_ecm = TRUE;
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209 continue;
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210 }
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211 if (strcmp(argv[i], "-i") == 0)
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212 {
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213 i++;
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214 input_file_name = argv[i];
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215 continue;
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216 }
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217 if (strcmp(argv[i], "-l") == 0)
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218 {
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219 log_audio = TRUE;
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220 continue;
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221 }
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222 if (strcmp(argv[i], "-v") == 0)
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223 {
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224 i++;
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225 t38_version = atoi(argv[i]);
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226 continue;
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227 }
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228 }
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229
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230 printf("Using T.38 version %d\n", t38_version);
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231 if (use_ecm)
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232 printf("Using ECM\n");
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233
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234 filesetup = AF_NULL_FILESETUP;
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235 wave_handle = AF_NULL_FILEHANDLE;
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236 if (log_audio)
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237 {
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238 if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
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239 {
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240 fprintf(stderr, " Failed to create file setup\n");
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241 exit(2);
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242 }
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243 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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244 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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245 afInitFileFormat(filesetup, AF_FILE_WAVE);
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246 afInitChannels(filesetup, AF_DEFAULT_TRACK, 4);
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247 if ((wave_handle = afOpenFile(OUTPUT_FILE_NAME_WAVE, "w", filesetup)) == AF_NULL_FILEHANDLE)
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248 {
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249 fprintf(stderr, " Cannot create wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
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250 exit(2);
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251 }
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252 }
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253 memset(silence, 0, sizeof(silence));
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254
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255 if ((path_a_to_b = ip_network_model_init(800, 2000, 0)) == NULL)
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256 {
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257 fprintf(stderr, "Failed to start IP network path model\n");
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258 exit(2);
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259 }
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260 if ((path_b_to_a = ip_network_model_init(800, 2000, 0)) == NULL)
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261 {
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262 fprintf(stderr, "Failed to start IP network path model\n");
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263 exit(2);
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264 }
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265
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266 fax_init(&fax_state_a, TRUE);
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267 t30_set_local_ident(&fax_state_a.t30_state, "11111111");
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268 t30_set_tx_file(&fax_state_a.t30_state, input_file_name, -1, -1);
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269 t30_set_phase_b_handler(&fax_state_a.t30_state, phase_b_handler, (void *) (intptr_t) 'A');
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270 t30_set_phase_d_handler(&fax_state_a.t30_state, phase_d_handler, (void *) (intptr_t) 'A');
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271 t30_set_phase_e_handler(&fax_state_a.t30_state, phase_e_handler, (void *) (intptr_t) 'A');
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272 t30_set_ecm_capability(&fax_state_a.t30_state, use_ecm);
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273 if (use_ecm)
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274 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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275 span_log_set_level(&fax_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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276 span_log_set_tag(&fax_state_a.logging, "FAX-A ");
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277 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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278 span_log_set_tag(&fax_state_a.t30_state.logging, "FAX-A ");
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279 memset(t30_amp_a, 0, sizeof(t30_amp_a));
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280
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281 if (t38_gateway_init(&t38_state_a, tx_packet_handler_a, &t38_state_b) == NULL)
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282 {
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283 fprintf(stderr, "Cannot start the T.38 channel\n");
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284 exit(2);
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285 }
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286 t38_set_t38_version(&t38_state_a.t38, t38_version);
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287 t38_gateway_ecm_control(&t38_state_a, use_ecm);
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288 span_log_set_level(&t38_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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289 span_log_set_tag(&t38_state_a.logging, "T.38-A");
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290 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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291 span_log_set_tag(&t38_state_a.t38.logging, "T.38-A");
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292 memset(t38_amp_a, 0, sizeof(t38_amp_a));
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293
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294 if (t38_gateway_init(&t38_state_b, tx_packet_handler_b, &t38_state_a) == NULL)
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295 {
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296 fprintf(stderr, "Cannot start the T.38 channel\n");
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297 exit(2);
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298 }
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299 t38_set_t38_version(&t38_state_b.t38, t38_version);
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300 t38_gateway_ecm_control(&t38_state_b, use_ecm);
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301 span_log_set_level(&t38_state_b.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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302 span_log_set_tag(&t38_state_b.logging, "T.38-B");
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303 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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304 span_log_set_tag(&t38_state_b.t38.logging, "T.38-B");
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305 memset(t38_amp_b, 0, sizeof(t38_amp_b));
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306
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307 fax_init(&fax_state_b, FALSE);
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308 t30_set_local_ident(&fax_state_b.t30_state, "22222222");
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309 t30_set_rx_file(&fax_state_b.t30_state, OUTPUT_FILE_NAME, -1);
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310 t30_set_phase_b_handler(&fax_state_b.t30_state, phase_b_handler, (void *) (intptr_t) 'B');
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311 t30_set_phase_d_handler(&fax_state_b.t30_state, phase_d_handler, (void *) (intptr_t) 'B');
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312 t30_set_phase_e_handler(&fax_state_b.t30_state, phase_e_handler, (void *) (intptr_t) 'B');
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313 t30_set_ecm_capability(&fax_state_b.t30_state, use_ecm);
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314 if (use_ecm)
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315 t30_set_supported_compressions(&fax_state_b.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
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316 span_log_set_level(&fax_state_b.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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317 span_log_set_tag(&fax_state_b.logging, "FAX-B ");
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318 span_log_set_level(&fax_state_b.t30_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
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319 span_log_set_tag(&fax_state_b.t30_state.logging, "FAX-B ");
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320 memset(t30_amp_b, 0, sizeof(t30_amp_b));
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321
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322 for (;;)
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323 {
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324 span_log_bump_samples(&fax_state_a.logging, SAMPLES_PER_CHUNK);
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325 span_log_bump_samples(&fax_state_a.t30_state.logging, SAMPLES_PER_CHUNK);
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326 span_log_bump_samples(&t38_state_a.logging, SAMPLES_PER_CHUNK);
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327 span_log_bump_samples(&t38_state_a.t38.logging, SAMPLES_PER_CHUNK);
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328 span_log_bump_samples(&t38_state_b.logging, SAMPLES_PER_CHUNK);
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329 span_log_bump_samples(&t38_state_b.t38.logging, SAMPLES_PER_CHUNK);
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330 span_log_bump_samples(&fax_state_b.logging, SAMPLES_PER_CHUNK);
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331 span_log_bump_samples(&fax_state_b.t30_state.logging, SAMPLES_PER_CHUNK);
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332 memset(out_amp, 0, sizeof(out_amp));
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333
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334 t30_len_a = fax_tx(&fax_state_a, t30_amp_a, SAMPLES_PER_CHUNK);
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335 /* The receive side always expects a full block of samples, but the
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336 transmit side may not be sending any when it doesn't need to. We
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337 may need to pad with some silence. */
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338 if (t30_len_a < SAMPLES_PER_CHUNK)
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339 {
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340 memset(t30_amp_a + t30_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_a));
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341 t30_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 < t30_len_a; i++)
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346 out_amp[i*4] = t30_amp_a[i];
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347 }
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348 if (t38_gateway_rx(&t38_state_a, t30_amp_a, t30_len_a))
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349 break;
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350
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351 t38_len_a = t38_gateway_tx(&t38_state_a, t38_amp_a, SAMPLES_PER_CHUNK);
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352 if (t38_len_a < SAMPLES_PER_CHUNK)
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353 {
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354 memset(t38_amp_a + t38_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_a));
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355 t38_len_a = SAMPLES_PER_CHUNK;
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356 }
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357 if (log_audio)
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358 {
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359 for (i = 0; i < t38_len_a; i++)
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360 out_amp[i*4 + 1] = t38_amp_a[i];
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361 }
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362 if (fax_rx(&fax_state_a, t38_amp_a, SAMPLES_PER_CHUNK))
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363 break;
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364
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365 t30_len_b = fax_tx(&fax_state_b, t30_amp_b, SAMPLES_PER_CHUNK);
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366 /* The receive side always expects a full block of samples, but the
|
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367 transmit side may not be sending any when it doesn't need to. We
|
|
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368 may need to pad with some silence. */
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369 if (t30_len_b < SAMPLES_PER_CHUNK)
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370 {
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371 memset(t30_amp_b + t30_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_b));
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372 t30_len_b = SAMPLES_PER_CHUNK;
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|
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373 }
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374 if (log_audio)
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|
|
375 {
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|
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376 for (i = 0; i < t30_len_b; i++)
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|
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377 out_amp[i*4 + 3] = t30_amp_b[i];
|
|
|
378 }
|
|
|
379 if (t38_gateway_rx(&t38_state_b, t30_amp_b, t30_len_b))
|
|
|
380 break;
|
|
|
381
|
|
|
382 t38_len_b = t38_gateway_tx(&t38_state_b, t38_amp_b, SAMPLES_PER_CHUNK);
|
|
|
383 if (t38_len_b < SAMPLES_PER_CHUNK)
|
|
|
384 {
|
|
|
385 memset(t38_amp_b + t38_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_b));
|
|
|
386 t38_len_b = SAMPLES_PER_CHUNK;
|
|
|
387 }
|
|
|
388 if (log_audio)
|
|
|
389 {
|
|
|
390 for (i = 0; i < t38_len_b; i++)
|
|
|
391 out_amp[i*4 + 2] = t38_amp_b[i];
|
|
|
392 }
|
|
|
393 if (fax_rx(&fax_state_b, t38_amp_b, SAMPLES_PER_CHUNK))
|
|
|
394 break;
|
|
|
395
|
|
|
396 while ((msg_len = ip_network_model_get(path_a_to_b, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
|
|
|
397 t38_core_rx_ifp_packet(&t38_state_b.t38, seq_no, msg, msg_len);
|
|
|
398 while ((msg_len = ip_network_model_get(path_b_to_a, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
|
|
|
399 t38_core_rx_ifp_packet(&t38_state_a.t38, seq_no, msg, msg_len);
|
|
|
400
|
|
|
401 if (log_audio)
|
|
|
402 {
|
|
|
403 outframes = afWriteFrames(wave_handle, AF_DEFAULT_TRACK, out_amp, SAMPLES_PER_CHUNK);
|
|
|
404 if (outframes != SAMPLES_PER_CHUNK)
|
|
|
405 break;
|
|
|
406 }
|
|
|
407
|
|
|
408 if (done[0] && done[1])
|
|
|
409 break;
|
|
|
410 }
|
|
|
411 if (log_audio)
|
|
|
412 {
|
|
|
413 if (afCloseFile(wave_handle) != 0)
|
|
|
414 {
|
|
|
415 fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
|
|
|
416 exit(2);
|
|
|
417 }
|
|
|
418 afFreeFileSetup(filesetup);
|
|
|
419 }
|
|
|
420 if (!succeeded[0] || !succeeded[1])
|
|
|
421 {
|
|
|
422 printf("Tests failed\n");
|
|
|
423 exit(2);
|
|
|
424 }
|
|
|
425 printf("Tests passed\n");
|
|
|
426 return 0;
|
|
|
427 }
|
|
|
428 /*- End of function --------------------------------------------------------*/
|
|
|
429 /*- End of file ------------------------------------------------------------*/
|
