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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 * playout_tests.c
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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 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: playout_tests.c,v 1.16 2006/11/24 12:34:55 steveu Exp $
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26 */
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27
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28 /*! \page playout_tests_page Playout (jitter buffering) tests
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29 \section playout_tests_page_sec_1 What does it do?
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30 These tests simulate timing jitter and packet loss in an audio stream, and see
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31 how well the playout module copes.
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32 */
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33
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34 #ifdef HAVE_CONFIG_H
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35 #include "config.h"
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36 #endif
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37
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38 #include <stdio.h>
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39 #include <inttypes.h>
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40 #include <stdlib.h>
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41 #include <string.h>
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42 #if defined(HAVE_TGMATH_H)
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43 #include <tgmath.h>
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44 #endif
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45 #if defined(HAVE_MATH_H)
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46 #include <math.h>
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47 #endif
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48 #include <tiffio.h>
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49
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50 #include <audiofile.h>
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51
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52 #include "spandsp.h"
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53
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54 #define INPUT_FILE_NAME "playout_in.wav"
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55 #define OUTPUT_FILE_NAME "playout_out.wav"
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56
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57 #define BLOCK_LEN 160
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58
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59 static void dynamic_buffer_tests(void)
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60 {
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61 playout_state_t *s;
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62 playout_frame_t frame;
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63 playout_frame_t *p;
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64 plc_state_t plc;
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65 time_scale_t ts;
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66 int16_t *amp;
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67 int16_t fill[BLOCK_LEN];
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68 int16_t buf[20*BLOCK_LEN];
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69 int16_t out[10*BLOCK_LEN];
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70 timestamp_t time_stamp;
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71 timestamp_t next_actual_receive;
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72 timestamp_t next_scheduled_receive;
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73 int near_far_time_offset;
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74 int rng;
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75 int i;
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76 int j;
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77 int ret;
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78 int len;
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79 int inframes;
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80 int outframes;
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81 AFfilehandle inhandle;
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82 AFfilehandle outhandle;
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83 AFfilesetup filesetup;
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84
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85 filesetup = afNewFileSetup();
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86 if (filesetup == AF_NULL_FILESETUP)
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87 {
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88 fprintf(stderr, " Failed to create file setup\n");
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89 exit(2);
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90 }
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91 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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92 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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93 afInitFileFormat(filesetup, AF_FILE_WAVE);
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94 afInitChannels(filesetup, AF_DEFAULT_TRACK, 2);
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95
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96 inhandle = afOpenFile(INPUT_FILE_NAME, "r", NULL);
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97 if (inhandle == AF_NULL_FILEHANDLE)
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98 {
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99 fprintf(stderr, " Failed to open wave file '%s'\n", INPUT_FILE_NAME);
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100 exit(2);
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101 }
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102 outhandle = afOpenFile(OUTPUT_FILE_NAME, "w", filesetup);
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103 if (outhandle == AF_NULL_FILEHANDLE)
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104 {
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105 fprintf(stderr, " Failed to create wave file '%s'\n", OUTPUT_FILE_NAME);
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106 exit(2);
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107 }
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108
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109 near_far_time_offset = 54321;
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110 time_stamp = 12345;
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111 next_actual_receive = time_stamp + near_far_time_offset;
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112 next_scheduled_receive = 0;
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113 for (i = 0; i < BLOCK_LEN; i++)
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114 fill[i] = 32767;
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115
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116 if ((s = playout_new(2*BLOCK_LEN, 15*BLOCK_LEN)) == NULL)
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117 return;
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118 plc_init(&plc);
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119 time_scale_init(&ts, 1.0);
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120 for (i = 0; i < 1000000; i++)
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121 {
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122 if (i >= next_actual_receive)
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123 {
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124 amp = malloc(BLOCK_LEN*sizeof(int16_t));
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125 inframes = afReadFrames(inhandle,
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126 AF_DEFAULT_TRACK,
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127 amp,
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128 BLOCK_LEN);
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129 if (inframes < BLOCK_LEN)
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130 break;
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131 ret = playout_put(s,
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132 amp,
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133 PLAYOUT_TYPE_SPEECH,
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134 inframes,
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135 time_stamp,
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136 next_actual_receive);
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137 #if 0
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138 switch (ret)
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139 {
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140 case PLAYOUT_OK:
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141 printf("<< Record\n");
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142 break;
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143 case PLAYOUT_ERROR:
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144 printf("<< Error\n");
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145 break;
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146 default:
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147 printf("<< Eh?\n");
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148 break;
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149 }
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150 #endif
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151 rng = rand() & 0xFF;
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152 if (i < 100000)
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153 rng = (rng*rng) >> 7;
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154 else if (i < 200000)
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155 rng = (rng*rng) >> 6;
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156 else if (i < 300000)
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157 rng = (rng*rng) >> 5;
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158 else if (i < 400000)
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159 rng = (rng*rng) >> 7;
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160 time_stamp += BLOCK_LEN;
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161 next_actual_receive = time_stamp + near_far_time_offset + rng;
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162 }
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163 if (i >= next_scheduled_receive)
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164 {
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165 do
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166 {
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167 ret = playout_get(s, &frame, next_scheduled_receive);
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168 if (ret == PLAYOUT_DROP)
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169 printf(">> Drop %d\n", next_scheduled_receive);
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170 }
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171 while (ret == PLAYOUT_DROP);
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172 switch (ret)
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173 {
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174 case PLAYOUT_OK:
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175 printf(">> Play %d\n", next_scheduled_receive);
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176 plc_rx(&plc, frame.data, frame.sender_len);
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177 len = time_scale(&ts, out, ((int16_t *) frame.data), frame.sender_len);
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178 printf("len = %d\n", len);
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179 for (j = 0; j < len; j++)
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180 {
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181 buf[2*j] = out[j];
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182 buf[2*j + 1] = 10*playout_current_length(s);
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183 }
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184 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, buf, len);
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185 if (outframes != len)
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186 {
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187 fprintf(stderr, " Error writing out sound\n");
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188 exit(2);
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189 }
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190 free(frame.data);
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191 next_scheduled_receive += BLOCK_LEN;
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192 break;
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193 case PLAYOUT_FILLIN:
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194 printf(">> Fill %d\n", next_scheduled_receive);
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195 plc_fillin(&plc, fill, BLOCK_LEN);
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196 time_scale_rate(&ts, 0.5);
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197 len = time_scale(&ts, out, fill, BLOCK_LEN);
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198 time_scale_rate(&ts, 1.0);
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199 printf("len = %d\n", len);
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200 for (j = 0; j < len; j++)
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201 {
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202 buf[2*j] = out[j];
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203 buf[2*j + 1] = 10*playout_current_length(s);
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204 }
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205 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, buf, len);
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206 if (outframes != len)
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207 {
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208 fprintf(stderr, " Error writing out sound\n");
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209 exit(2);
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210 }
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211 next_scheduled_receive += BLOCK_LEN;
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212 break;
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213 case PLAYOUT_DROP:
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214 printf(">> Drop %d\n", next_scheduled_receive);
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215 break;
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216 case PLAYOUT_NOFRAME:
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217 printf(">> No frame %d %d %d %d\n", next_scheduled_receive, playout_next_due(s), s->last_speech_sender_stamp, s->last_speech_sender_len);
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218 next_scheduled_receive += BLOCK_LEN;
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219 break;
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220 case PLAYOUT_EMPTY:
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221 printf(">> Empty %d\n", next_scheduled_receive);
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222 next_scheduled_receive += BLOCK_LEN;
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223 break;
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224 case PLAYOUT_ERROR:
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225 printf(">> Error %d\n", next_scheduled_receive);
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226 next_scheduled_receive += BLOCK_LEN;
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227 break;
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228 default:
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229 printf(">> Eh? %d\n", next_scheduled_receive);
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230 break;
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231 }
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232 }
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233 }
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234 if (afCloseFile(inhandle) != 0)
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235 {
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236 fprintf(stderr, " Cannot close wave file '%s'\n", INPUT_FILE_NAME);
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237 exit(2);
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238 }
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239 if (afCloseFile(outhandle) != 0)
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240 {
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241 fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME);
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242 exit(2);
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243 }
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244 afFreeFileSetup(filesetup);
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245
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246 printf("%10" PRId32 " %10" PRId32 " %10d\n", s->state_just_in_time, s->state_late, playout_current_length(s));
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247
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248 /* Clear everything from the queue */
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249 while ((p = playout_get_unconditional(s)))
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250 /*free(p->data)*/;
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251 /* Now free the context itself */
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252 playout_free(s);
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253 }
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254 /*- End of function --------------------------------------------------------*/
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255
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256 static void static_buffer_tests(void)
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257 {
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258 playout_state_t *s;
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259 playout_frame_t frame;
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260 playout_frame_t *p;
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261 int type;
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262 uint8_t fr[BLOCK_LEN];
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263 timestamp_t next_scheduled_send;
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264 int transit_time;
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265 timestamp_t next_actual_receive;
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266 timestamp_t next_scheduled_receive;
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267 int len;
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268 int i;
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269 int ret;
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270
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271 next_scheduled_send = 0;
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272 transit_time = 320;
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273 next_actual_receive = next_scheduled_send + transit_time;
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274 next_scheduled_receive = 960;
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275
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276 memset(fr, 0, sizeof(fr));
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277 type = PLAYOUT_TYPE_SPEECH;
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278 len = BLOCK_LEN;
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279
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280 if ((s = playout_new(2*BLOCK_LEN, 2*BLOCK_LEN)) == NULL)
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281 return;
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282 for (i = 0; i < 1000000; i++)
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283 {
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284 if (i >= next_actual_receive)
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285 {
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286 ret = playout_put(s,
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287 fr,
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288 type,
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289 len,
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290 next_scheduled_send,
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291 next_actual_receive);
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292 switch (ret)
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293 {
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294 case PLAYOUT_OK:
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295 printf("<< Record\n");
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296 break;
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297 case PLAYOUT_ERROR:
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298 printf("<< Error\n");
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299 break;
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300 default:
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301 printf("<< Eh?\n");
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302 break;
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303 }
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304 next_scheduled_send += BLOCK_LEN;
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305 ret = rand() & 0xFF;
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306 ret = (ret*ret) >> 7;
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307 transit_time = 320 + ret;
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308 next_actual_receive = next_scheduled_send + transit_time;
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309 }
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310 if (i >= next_scheduled_receive)
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311 {
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312 do
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313 {
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314 ret = playout_get(s, &frame, next_scheduled_receive);
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315 }
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316 while (ret == PLAYOUT_DROP);
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317 switch (ret)
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318 {
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319 case PLAYOUT_OK:
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320 printf(">> Play\n");
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321 next_scheduled_receive += BLOCK_LEN;
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322 break;
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323 case PLAYOUT_FILLIN:
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324 printf(">> Fill\n");
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325 next_scheduled_receive += BLOCK_LEN;
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326 break;
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327 case PLAYOUT_DROP:
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328 printf(">> Drop\n");
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329 break;
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330 case PLAYOUT_NOFRAME:
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331 printf(">> No frame\n");
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332 next_scheduled_receive += BLOCK_LEN;
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333 break;
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334 case PLAYOUT_EMPTY:
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335 printf(">> Empty\n");
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336 next_scheduled_receive += BLOCK_LEN;
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337 break;
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338 case PLAYOUT_ERROR:
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339 printf(">> Error\n");
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340 next_scheduled_receive += BLOCK_LEN;
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341 break;
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342 default:
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343 printf(">> Eh?\n");
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344 break;
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345 }
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346 }
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347 }
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348 /* Clear everything from the queue */
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349 while ((p = playout_get_unconditional(s)))
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350 /*free(p->data)*/;
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351 /* Now free the context itself */
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352 playout_free(s);
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353 }
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354 /*- End of function --------------------------------------------------------*/
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355
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356 int main(int argc, char *argv[])
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357 {
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358 printf("Dynamic buffering tests\n");
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359 dynamic_buffer_tests();
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360 printf("Static buffering tests\n");
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361 static_buffer_tests();
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362 }
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363 /*- End of function --------------------------------------------------------*/
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364 /*- End of file ------------------------------------------------------------*/
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