Mercurial > SDL_sound_CoreAudio
annotate playsound/playsound.c @ 146:023c3e7f028b
Cleaned up the overflow buffer hack.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Tue, 23 Oct 2001 18:27:31 +0000 |
parents | 195c96fa355a |
children | d51546293fd1 |
rev | line source |
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1 /* |
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2 * SDL_sound -- An abstract sound format decoding API. |
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3 * Copyright (C) 2001 Ryan C. Gordon. |
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4 * |
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5 * This library is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU Lesser General Public |
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7 * License as published by the Free Software Foundation; either |
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8 * version 2.1 of the License, or (at your option) any later version. |
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9 * |
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10 * This library is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * Lesser General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Lesser General Public |
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16 * License along with this library; if not, write to the Free Software |
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17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 */ |
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19 |
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20 /** |
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21 * This is a quick and dirty test of SDL_sound. |
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22 * |
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23 * Please see the file LICENSE in the source's root directory. |
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24 * |
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25 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org) |
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26 */ |
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27 |
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28 #include <stdio.h> |
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29 #include <string.h> |
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30 #include <assert.h> |
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31 #include "SDL.h" |
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32 #include "SDL_sound.h" |
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33 |
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34 #define PLAYSOUND_VER_MAJOR 0 |
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35 #define PLAYSOUND_VER_MINOR 1 |
135
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36 #define PLAYSOUND_VER_PATCH 3 |
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37 |
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38 |
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39 static void output_versions(const char *argv0) |
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40 { |
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41 Sound_Version compiled; |
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42 Sound_Version linked; |
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43 SDL_version sdl_compiled; |
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44 const SDL_version *sdl_linked; |
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45 |
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46 SOUND_VERSION(&compiled); |
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47 Sound_GetLinkedVersion(&linked); |
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48 SDL_VERSION(&sdl_compiled); |
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49 sdl_linked = SDL_Linked_Version(); |
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50 |
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51 fprintf(stderr, |
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52 "%s version %d.%d.%d.\n" |
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53 " Compiled against SDL_sound version %d.%d.%d,\n" |
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54 " and linked against %d.%d.%d.\n" |
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55 " Compiled against SDL version %d.%d.%d,\n" |
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56 " and linked against %d.%d.%d.\n\n", |
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57 argv0, |
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58 PLAYSOUND_VER_MAJOR, PLAYSOUND_VER_MINOR, PLAYSOUND_VER_PATCH, |
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59 compiled.major, compiled.minor, compiled.patch, |
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60 linked.major, linked.minor, linked.patch, |
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61 sdl_compiled.major, sdl_compiled.minor, sdl_compiled.patch, |
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62 sdl_linked->major, sdl_linked->minor, sdl_linked->patch); |
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63 } /* output_versions */ |
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64 |
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65 |
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66 static void output_decoders(void) |
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67 { |
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68 const Sound_DecoderInfo **rc = Sound_AvailableDecoders(); |
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69 const Sound_DecoderInfo **i; |
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70 |
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71 fprintf(stderr, "Supported sound formats:\n"); |
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72 if (rc == NULL) |
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73 fprintf(stderr, " * Apparently, NONE!\n"); |
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74 else |
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75 { |
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76 for (i = rc; *i != NULL; i++) |
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77 { |
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78 fprintf(stderr, " * %s: %s\n Written by %s.\n %s\n", |
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79 (*i)->extension, (*i)->description, |
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80 (*i)->author, (*i)->url); |
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81 } /* for */ |
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82 } /* else */ |
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83 |
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84 fprintf(stderr, "\n"); |
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85 } /* output_decoders */ |
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86 |
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87 |
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88 static volatile int done_flag = 0; |
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89 |
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90 static Uint8 *decoded_ptr = NULL; |
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91 static Uint32 decoded_bytes = 0; |
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92 |
58
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93 static void audio_callback(void *userdata, Uint8 *stream, int len) |
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94 { |
112
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95 Sound_Sample *sample = (Sound_Sample *) userdata; |
82
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96 int bw = 0; /* bytes written to stream*/ |
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97 int cpysize; |
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98 |
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99 while (bw < len) |
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100 { |
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101 if (!decoded_bytes) |
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102 { |
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103 if (sample->flags & (SOUND_SAMPLEFLAG_ERROR|SOUND_SAMPLEFLAG_EOF)) |
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104 { |
146
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105 memset(stream + bw, '\0', len - bw); |
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106 done_flag = 1; |
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107 return; |
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108 } /* if */ |
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109 |
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110 decoded_bytes = Sound_Decode(sample); |
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111 decoded_ptr = sample->buffer; |
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112 } /* if */ |
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113 |
146
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114 cpysize = len - bw; |
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115 if (cpysize > decoded_bytes) |
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116 cpysize = decoded_bytes; |
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117 |
146
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118 if (cpysize > 0) |
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119 { |
146
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120 memcpy(stream + bw, decoded_ptr, cpysize); |
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121 bw += cpysize; |
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122 decoded_ptr += bw; |
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123 decoded_bytes -= bw; |
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124 } /* if */ |
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125 } /* while */ |
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126 } /* audio_callback */ |
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127 |
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128 |
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129 static void output_usage(const char *argv0) |
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130 { |
82
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131 fprintf(stderr, |
135
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132 "USAGE: %s [...options...] [soundFile1] ... [soundFileN]\n" |
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133 "\n" |
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134 " Options:\n" |
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135 " --rate x Playback at sample rate of x HZ.\n" |
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136 " --format fmt Playback in fmt format (see below).\n" |
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137 " --channels n Playback on n channels (1 or 2).\n" |
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138 " --version Display version information and exit.\n" |
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139 " --decoders List supported sound formats and exit.\n" |
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140 " --help Display this information and exit.\n" |
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141 "\n" |
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142 " Valid arguments to the --format option are:\n" |
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143 " U8 Unsigned 8-bit.\n" |
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144 " S8 Signed 8-bit.\n" |
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145 " U16LSB Unsigned 16-bit (least significant byte first).\n" |
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146 " U16MSB Unsigned 16-bit (most significant byte first).\n" |
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147 " S16LSB Signed 16-bit (least significant byte first).\n" |
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148 " S16MSB Signed 16-bit (most significant byte first).\n" |
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149 "\n", |
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150 argv0); |
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151 } /* output_usage */ |
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152 |
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153 |
135
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154 static int str_to_fmt(char *str) |
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155 { |
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156 if (strcmp(str, "U8") == 0) |
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157 return AUDIO_U8; |
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158 if (strcmp(str, "S8") == 0) |
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159 return AUDIO_S8; |
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160 if (strcmp(str, "U16LSB") == 0) |
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161 return AUDIO_U16LSB; |
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162 if (strcmp(str, "S16LSB") == 0) |
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163 return AUDIO_S16LSB; |
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164 if (strcmp(str, "U16MSB") == 0) |
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165 return AUDIO_U16MSB; |
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166 if (strcmp(str, "S16MSB") == 0) |
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167 return AUDIO_S16MSB; |
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168 return 0; |
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169 } /* str_to_fmt */ |
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170 |
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171 |
58
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172 int main(int argc, char **argv) |
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173 { |
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174 Sound_AudioInfo sound_desired; |
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175 SDL_AudioSpec sdl_desired; |
112
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176 SDL_AudioSpec sdl_actual; |
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177 Sound_Sample *sample; |
135
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178 int use_specific_audiofmt = 0; |
58
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179 int i; |
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180 |
112
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181 /* !!! FIXME: Move this to a parse_cmdline() function... */ |
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182 if (argc < 2) |
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183 { |
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184 output_usage(argv[0]); |
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185 return(42); |
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186 } /* if */ |
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187 |
135
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188 memset(&sound_desired, '\0', sizeof (sound_desired)); |
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189 |
58
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190 for (i = 0; i < argc; i++) |
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191 { |
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192 if (strncmp(argv[i], "--", 2) != 0) |
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193 continue; |
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194 |
135
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195 if (strcmp(argv[i], "--version") == 0) |
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196 { |
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197 output_versions(argv[0]); |
135
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198 return(42); |
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199 } /* if */ |
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200 |
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201 else if (strcmp(argv[i], "--help") == 0) |
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202 { |
58
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203 output_usage(argv[0]); |
135
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204 return(42); |
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205 } /* if */ |
135
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206 |
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207 else if (strcmp(argv[i], "--rate") == 0 && argc > i + 1) |
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208 { |
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209 use_specific_audiofmt = 1; |
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210 sound_desired.rate = atoi(argv[++i]); |
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211 if (sound_desired.rate <= 0) |
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212 { |
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213 fprintf(stderr, "Bad argument to --rate!\n"); |
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214 return(42); |
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215 } |
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216 } /* else if */ |
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217 |
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218 else if (strcmp(argv[i], "--format") == 0 && argc > i + 1) |
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219 { |
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220 use_specific_audiofmt = 1; |
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221 sound_desired.format = str_to_fmt(argv[++i]); |
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222 if (sound_desired.format == 0) |
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223 { |
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224 fprintf(stderr, "Bad argument to --format! Try one of:\n" |
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225 "U8, S8, U16LSB, S16LSB, U16MSB, S16MSB\n"); |
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226 return(42); |
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227 } |
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228 } /* else if */ |
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229 |
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230 else if (strcmp(argv[i], "--channels") == 0 && argc > i + 1) |
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231 { |
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232 use_specific_audiofmt = 1; |
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233 sound_desired.channels = atoi(argv[++i]); |
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234 if (sound_desired.channels < 1 || sound_desired.channels > 2) |
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235 { |
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236 fprintf(stderr, |
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237 "Bad argument to --channels! Try 1 (mono) or 2 " |
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238 "(stereo).\n"); |
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239 return(42); |
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240 } |
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241 } /* else if */ |
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242 |
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243 else if (strcmp(argv[i], "--decoders") == 0) |
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244 { |
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245 if (!Sound_Init()) |
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246 { |
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247 fprintf(stderr, "Sound_Init() failed!\n" |
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248 " reason: [%s].\n", Sound_GetError()); |
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249 SDL_Quit(); |
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250 return(42); |
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251 } /* if */ |
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252 |
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253 output_decoders(); |
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254 Sound_Quit(); |
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255 return(0); |
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256 } /* else if */ |
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257 |
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258 else |
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259 { |
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260 fprintf(stderr, "unknown option: \"%s\"\n", argv[i]); |
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261 return(42); |
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262 } /* else */ |
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263 } /* for */ |
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264 |
135
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265 /* Pick sensible defaults for any value not explicitly specified. */ |
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266 if (use_specific_audiofmt) |
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267 { |
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268 if (sound_desired.rate == 0) |
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269 sound_desired.rate = 44100; |
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270 if (sound_desired.format == 0) |
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271 sound_desired.format = AUDIO_S16SYS; |
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272 if (sound_desired.channels == 0) |
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273 sound_desired.channels = 2; |
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274 } /* if */ |
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275 |
58
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276 if (SDL_Init(SDL_INIT_AUDIO) == -1) |
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277 { |
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278 fprintf(stderr, "SDL_Init(SDL_INIT_AUDIO) failed!\n" |
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279 " reason: [%s].\n", SDL_GetError()); |
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280 return(42); |
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281 } /* if */ |
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282 |
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283 if (!Sound_Init()) |
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284 { |
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285 fprintf(stderr, "Sound_Init() failed!\n" |
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286 " reason: [%s].\n", Sound_GetError()); |
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287 SDL_Quit(); |
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288 return(42); |
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289 } /* if */ |
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290 |
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291 for (i = 1; i < argc; i++) |
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292 { |
135
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293 /* !!! FIXME: This is ugly! */ |
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294 if ( (strcmp(argv[i], "--rate") == 0) || |
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295 (strcmp(argv[i], "--format") == 0) || |
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296 (strcmp(argv[i], "--channels") == 0) ) |
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297 { |
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298 i++; |
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299 continue; |
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300 } /* if */ |
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301 |
58
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302 if (strncmp(argv[i], "--", 2) == 0) |
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303 continue; |
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304 |
135
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305 sample = Sound_NewSampleFromFile(argv[i], |
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306 use_specific_audiofmt ? &sound_desired : NULL, 4096 * 4); |
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307 |
58
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308 if (!sample) |
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309 { |
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310 fprintf(stderr, "Couldn't load \"%s\"!\n" |
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311 " reason: [%s].\n", argv[i], Sound_GetError()); |
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312 continue; |
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313 } /* if */ |
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314 |
135
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315 /* |
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316 * Unless explicitly specified, pick the format from the sound |
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317 * to be played. |
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318 */ |
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319 if (use_specific_audiofmt) |
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320 { |
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321 sdl_desired.freq = sound_desired.rate; |
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322 sdl_desired.format = sound_desired.format; |
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323 sdl_desired.channels = sound_desired.channels; |
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324 } /* if */ |
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325 else |
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326 { |
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327 sdl_desired.freq = sample->actual.rate; |
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328 sdl_desired.format = sample->actual.format; |
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329 sdl_desired.channels = sample->actual.channels; |
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330 } /* else */ |
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331 |
137
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332 sdl_desired.samples = 4096; |
112
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333 sdl_desired.callback = audio_callback; |
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334 sdl_desired.userdata = sample; |
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335 |
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336 if (SDL_OpenAudio(&sdl_desired, NULL) < 0) |
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337 { |
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338 fprintf(stderr, "Couldn't open audio device!\n" |
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339 " reason: [%s].\n", SDL_GetError()); |
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340 Sound_Quit(); |
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341 SDL_Quit(); |
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342 return(42); |
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343 } /* if */ |
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344 |
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345 printf("Now playing [%s]...\n", argv[i]); |
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346 |
58
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347 done_flag = 0; |
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348 SDL_PauseAudio(0); |
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349 while (!done_flag) |
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350 { |
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351 SDL_Delay(10); |
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352 } /* while */ |
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353 SDL_PauseAudio(1); |
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354 |
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355 if (sample->flags & SOUND_SAMPLEFLAG_ERROR) |
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356 { |
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357 fprintf(stderr, "Error in decoding sound file!\n" |
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358 " reason: [%s].\n", Sound_GetError()); |
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359 } /* if */ |
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360 |
112
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361 SDL_CloseAudio(); /* reopen with next sample's format if possible */ |
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362 Sound_FreeSample(sample); |
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363 } /* for */ |
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364 |
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365 Sound_Quit(); |
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366 SDL_Quit(); |
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367 return(0); |
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368 } /* main */ |
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369 |
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370 /* end of playsound.c ... */ |
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371 |