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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 * line_model_tests.c - Tests for the telephone line model.
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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) 2004 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: line_model_tests.c,v 1.15 2006/11/19 14:07:27 steveu Exp $
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26 */
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27
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28 /*! \page line_model_tests_page Telephony line model tests
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29 \section line_model_tests_page_sec_1 What does it do?
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30 ???.
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31
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32 \section line_model_tests_page_sec_2 How does it work?
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33 ???.
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34 */
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35
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36 #ifdef HAVE_CONFIG_H
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37 #include "config.h"
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38 #endif
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39
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40 #include <stdlib.h>
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41 #include <unistd.h>
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42 #include <inttypes.h>
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43 #include <string.h>
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44 #include <time.h>
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45 #include <stdio.h>
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46 #include <fcntl.h>
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47 #include <audiofile.h>
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48 #include <tiffio.h>
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49 #if defined(HAVE_TGMATH_H)
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50 #include <tgmath.h>
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51 #endif
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52 #if defined(HAVE_MATH_H)
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53 #define GEN_CONST
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54 #include <math.h>
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55 #endif
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56
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57 #include "spandsp.h"
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58 #include "test_utils.h"
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59 #include "line_model.h"
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60
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61 #if !defined(NULL)
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62 #define NULL (void *) 0
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63 #endif
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64
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65 #define BLOCK_LEN 160
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66
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67 #define IN_FILE_NAME1 "line_model_test_in1.wav"
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68 #define IN_FILE_NAME2 "line_model_test_in2.wav"
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69 #define OUT_FILE_NAME1 "line_model_one_way_test_out.wav"
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70 #define OUT_FILE_NAME "line_model_test_out.wav"
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71
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72 static void test_one_way_model(int line_model_no, int speech_test)
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73 {
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74 one_way_line_model_state_t *model;
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75 int16_t input1[BLOCK_LEN];
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76 int16_t output1[BLOCK_LEN];
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77 int16_t amp[2*BLOCK_LEN];
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78 AFfilehandle inhandle1;
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79 AFfilehandle outhandle;
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80 AFfilesetup filesetup;
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81 int outframes;
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82 int samples;
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83 int i;
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84 int j;
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85 awgn_state_t noise1;
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86
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87 if ((model = one_way_line_model_init(line_model_no, -50, MUNGE_CODEC_ALAW)) == NULL)
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88 {
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89 fprintf(stderr, " Failed to create line model\n");
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90 exit(2);
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91 }
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92
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93 awgn_init_dbm0(&noise1, 1234567, -10.0f);
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94
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95 if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
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96 {
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97 fprintf(stderr, " Failed to create file setup\n");
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98 exit(2);
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99 }
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100 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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101 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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102 afInitFileFormat(filesetup, AF_FILE_WAVE);
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103 afInitChannels(filesetup, AF_DEFAULT_TRACK, 1);
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104
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105 if ((inhandle1 = afOpenFile(IN_FILE_NAME1, "r", NULL)) == AF_NULL_FILEHANDLE)
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106 {
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107 fprintf(stderr, " Cannot open wave file '%s'\n", IN_FILE_NAME1);
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108 exit(2);
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109 }
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110 if ((outhandle = afOpenFile(OUT_FILE_NAME1, "w", filesetup)) == AF_NULL_FILEHANDLE)
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111 {
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112 fprintf(stderr, " Cannot create wave file '%s'\n", OUT_FILE_NAME1);
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113 exit(2);
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114 }
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115 for (i = 0; i < 10000; i++)
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116 {
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117 if (speech_test)
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118 {
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119 samples = afReadFrames(inhandle1,
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120 AF_DEFAULT_TRACK,
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121 input1,
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122 BLOCK_LEN);
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123 if (samples == 0)
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124 break;
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125 }
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126 else
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127 {
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128 for (j = 0; j < BLOCK_LEN; j++)
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129 input1[j] = awgn(&noise1);
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130 samples = BLOCK_LEN;
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131 }
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132 for (j = 0; j < samples; j++)
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133 {
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134 one_way_line_model(model,
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135 &output1[j],
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136 &input1[j],
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137 1);
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138 amp[j] = output1[j];
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139 }
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140 outframes = afWriteFrames(outhandle,
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141 AF_DEFAULT_TRACK,
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142 amp,
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143 samples);
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144 if (outframes != samples)
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145 {
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146 fprintf(stderr, " Error writing wave file\n");
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147 exit(2);
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148 }
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149 }
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150 if (afCloseFile(inhandle1))
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151 {
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152 fprintf(stderr, " Cannot close wave file '%s'\n", IN_FILE_NAME1);
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153 exit(2);
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154 }
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155 if (afCloseFile(outhandle))
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156 {
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157 fprintf(stderr, " Cannot close wave file '%s'\n", OUT_FILE_NAME1);
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158 exit(2);
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159 }
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160 afFreeFileSetup(filesetup);
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161 one_way_line_model_release(model);
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162 }
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163
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164 static void test_both_ways_model(int line_model_no, int speech_test)
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165 {
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166 both_ways_line_model_state_t *model;
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167 int16_t input1[BLOCK_LEN];
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168 int16_t input2[BLOCK_LEN];
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169 int16_t output1[BLOCK_LEN];
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170 int16_t output2[BLOCK_LEN];
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171 int16_t amp[2*BLOCK_LEN];
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172 AFfilehandle inhandle1;
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173 AFfilehandle inhandle2;
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174 AFfilehandle outhandle;
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175 AFfilesetup filesetup;
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176 int outframes;
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177 int samples;
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178 int i;
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179 int j;
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180 awgn_state_t noise1;
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181 awgn_state_t noise2;
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182
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183 if ((model = both_ways_line_model_init(line_model_no, -50, line_model_no + 1, -35, MUNGE_CODEC_ALAW)) == NULL)
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184 {
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185 fprintf(stderr, " Failed to create line model\n");
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186 exit(2);
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187 }
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188
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189 awgn_init_dbm0(&noise1, 1234567, -10.0f);
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190 awgn_init_dbm0(&noise2, 1234567, -10.0f);
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191
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192 filesetup = afNewFileSetup();
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193 if (filesetup == AF_NULL_FILESETUP)
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194 {
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195 fprintf(stderr, " Failed to create file setup\n");
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196 exit(2);
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197 }
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198 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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199 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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200 afInitFileFormat(filesetup, AF_FILE_WAVE);
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201 afInitChannels(filesetup, AF_DEFAULT_TRACK, 2);
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202
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203 inhandle1 = afOpenFile(IN_FILE_NAME1, "r", NULL);
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204 if (inhandle1 == AF_NULL_FILEHANDLE)
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205 {
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206 fprintf(stderr, " Cannot open wave file '%s'\n", IN_FILE_NAME1);
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207 exit(2);
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208 }
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209 inhandle2 = afOpenFile(IN_FILE_NAME2, "r", NULL);
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210 if (inhandle2 == AF_NULL_FILEHANDLE)
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211 {
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212 fprintf(stderr, " Cannot open wave file '%s'\n", IN_FILE_NAME2);
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213 exit(2);
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214 }
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215 outhandle = afOpenFile(OUT_FILE_NAME, "w", filesetup);
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216 if (outhandle == AF_NULL_FILEHANDLE)
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217 {
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218 fprintf(stderr, " Cannot create wave file '%s'\n", OUT_FILE_NAME);
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219 exit(2);
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220 }
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221 for (i = 0; i < 10000; i++)
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222 {
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223 if (speech_test)
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224 {
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225 samples = afReadFrames(inhandle1,
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226 AF_DEFAULT_TRACK,
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227 input1,
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228 BLOCK_LEN);
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229 if (samples == 0)
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230 break;
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231 samples = afReadFrames(inhandle2,
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232 AF_DEFAULT_TRACK,
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233 input2,
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234 samples);
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235 if (samples == 0)
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236 break;
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237 }
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238 else
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239 {
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240 for (j = 0; j < BLOCK_LEN; j++)
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241 {
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242 input1[j] = awgn(&noise1);
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243 input2[j] = awgn(&noise2);
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244 }
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245 samples = BLOCK_LEN;
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246 }
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247 for (j = 0; j < samples; j++)
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248 {
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249 both_ways_line_model(model,
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250 &output1[j],
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251 &input1[j],
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252 &output2[j],
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253 &input2[j],
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254 1);
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255 amp[2*j] = output1[j];
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256 amp[2*j + 1] = output2[j];
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257 }
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258 outframes = afWriteFrames(outhandle,
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259 AF_DEFAULT_TRACK,
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260 amp,
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261 samples);
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262 if (outframes != samples)
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263 {
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264 fprintf(stderr, " Error writing wave file\n");
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265 exit(2);
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266 }
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267 }
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268 if (afCloseFile(inhandle1))
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269 {
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270 fprintf(stderr, " Cannot close wave file '%s'\n", IN_FILE_NAME1);
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271 exit(2);
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272 }
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273 if (afCloseFile(inhandle2))
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274 {
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275 fprintf(stderr, " Cannot close wave file '%s'\n", IN_FILE_NAME2);
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276 exit(2);
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277 }
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278 if (afCloseFile(outhandle))
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279 {
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280 fprintf(stderr, " Cannot close wave file '%s'\n", OUT_FILE_NAME);
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281 exit(2);
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282 }
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283 afFreeFileSetup(filesetup);
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284 both_ways_line_model_release(model);
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285 }
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286 /*- End of function --------------------------------------------------------*/
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287
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288 int main(int argc, char *argv[])
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289 {
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290 int line_model_no;
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291 int speech_test;
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292
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293 line_model_no = 5;
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294 speech_test = TRUE;
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295 if (argc > 1)
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296 line_model_no = atoi(argv[1]);
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297 if (argc > 2)
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298 speech_test = FALSE;
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299 test_one_way_model(line_model_no, speech_test);
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300 test_both_ways_model(line_model_no, speech_test);
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301 }
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302 /*- End of function --------------------------------------------------------*/
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303 /*- End of file ------------------------------------------------------------*/
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