Mercurial > SDL_sound_CoreAudio
annotate SDL_sound.c @ 591:8faf61a640f0 tip
Resynced fixes for unit conversion bugs in the Ogg Tremor decoder from SoundDecoder/ALmixer.
Ogg Vorbis uses seconds and we multiply by 1000 to convert to milliseconds. But Ogg Tremor already uses milliseconds but I was still multiplying by 1000.
| author | Eric Wing <ewing . public |-at-| gmail . com> |
|---|---|
| date | Thu, 25 Oct 2012 16:34:18 -0700 |
| parents | 8d62447b75f2 |
| children |
| rev | line source |
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| 4 | 1 /* |
| 2 * SDL_sound -- An abstract sound format decoding API. | |
| 3 * Copyright (C) 2001 Ryan C. Gordon. | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Lesser General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2.1 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Lesser General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Lesser General Public | |
| 16 * License along with this library; if not, write to the Free Software | |
| 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 */ | |
| 19 | |
| 20 /** | |
| 21 * This file implements the core API, which is relatively simple. | |
| 22 * The real meat of SDL_sound is in the decoders directory. | |
| 23 * | |
| 24 * Documentation is in SDL_sound.h ... It's verbose, honest. :) | |
| 25 * | |
|
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26 * Please see the file LICENSE.txt in the source's root directory. |
| 4 | 27 * |
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28 * This file written by Ryan C. Gordon. (icculus@icculus.org) |
| 4 | 29 */ |
| 30 | |
|
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31 #if HAVE_CONFIG_H |
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32 # include <config.h> |
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33 #endif |
| 4 | 34 |
| 35 #include <stdio.h> | |
| 36 #include <stdlib.h> | |
| 37 #include <string.h> | |
| 38 #include <ctype.h> | |
| 39 | |
| 40 #include "SDL.h" | |
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41 #include "SDL_thread.h" |
| 4 | 42 #include "SDL_sound.h" |
| 43 | |
| 44 #define __SDL_SOUND_INTERNAL__ | |
| 45 #include "SDL_sound_internal.h" | |
| 46 | |
| 47 | |
| 48 /* The various decoder drivers... */ | |
| 49 | |
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50 /* All these externs may be missing; we check SOUND_SUPPORTS_xxx before use. */ |
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51 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_MPG123; |
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52 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_MIKMOD; |
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53 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_MODPLUG; |
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54 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_WAV; |
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55 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_AIFF; |
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56 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_AU; |
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57 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_OGG; |
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58 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_VOC; |
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59 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_RAW; |
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60 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_SHN; |
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61 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_MIDI; |
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62 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_FLAC; |
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63 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_QuickTime; |
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64 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_SPEEX; |
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65 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_CoreAudio; |
| 450 | 66 |
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67 typedef struct |
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68 { |
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69 int available; |
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70 const Sound_DecoderFunctions *funcs; |
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71 } decoder_element; |
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72 |
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73 static decoder_element decoders[] = |
| 4 | 74 { |
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75 #if (defined SOUND_SUPPORTS_MPG123) |
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76 { 0, &__Sound_DecoderFunctions_MPG123 }, |
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77 #endif |
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78 |
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79 #if (defined SOUND_SUPPORTS_MODPLUG) |
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80 { 0, &__Sound_DecoderFunctions_MODPLUG }, |
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81 #endif |
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82 |
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83 #if (defined SOUND_SUPPORTS_MIKMOD) |
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84 { 0, &__Sound_DecoderFunctions_MIKMOD }, |
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85 #endif |
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86 |
| 20 | 87 #if (defined SOUND_SUPPORTS_WAV) |
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88 { 0, &__Sound_DecoderFunctions_WAV }, |
| 20 | 89 #endif |
| 90 | |
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91 #if (defined SOUND_SUPPORTS_AIFF) |
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92 { 0, &__Sound_DecoderFunctions_AIFF }, |
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93 #endif |
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94 |
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95 #if (defined SOUND_SUPPORTS_AU) |
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96 { 0, &__Sound_DecoderFunctions_AU }, |
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97 #endif |
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98 |
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99 #if (defined SOUND_SUPPORTS_OGG) |
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100 { 0, &__Sound_DecoderFunctions_OGG }, |
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101 #endif |
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102 |
| 4 | 103 #if (defined SOUND_SUPPORTS_VOC) |
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104 { 0, &__Sound_DecoderFunctions_VOC }, |
| 4 | 105 #endif |
| 106 | |
| 107 #if (defined SOUND_SUPPORTS_RAW) | |
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108 { 0, &__Sound_DecoderFunctions_RAW }, |
| 4 | 109 #endif |
| 102 | 110 |
| 111 #if (defined SOUND_SUPPORTS_SHN) | |
| 112 { 0, &__Sound_DecoderFunctions_SHN }, | |
| 113 #endif | |
| 110 | 114 |
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115 #if (defined SOUND_SUPPORTS_FLAC) |
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116 { 0, &__Sound_DecoderFunctions_FLAC }, |
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117 #endif |
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118 |
| 110 | 119 #if (defined SOUND_SUPPORTS_MIDI) |
| 120 { 0, &__Sound_DecoderFunctions_MIDI }, | |
| 121 #endif | |
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122 |
| 322 | 123 #if (defined SOUND_SUPPORTS_QUICKTIME) |
| 124 { 0, &__Sound_DecoderFunctions_QuickTime }, | |
| 125 #endif | |
| 126 | |
| 450 | 127 #if (defined SOUND_SUPPORTS_SPEEX) |
| 128 { 0, &__Sound_DecoderFunctions_SPEEX }, | |
| 129 #endif | |
| 130 | |
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131 #if (defined SOUND_SUPPORTS_COREAUDIO) |
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132 { 0, &__Sound_DecoderFunctions_CoreAudio }, |
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133 #endif |
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134 |
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135 { 0, NULL } |
| 4 | 136 }; |
| 137 | |
| 138 | |
| 139 | |
| 140 /* General SDL_sound state ... */ | |
| 141 | |
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142 typedef struct __SOUND_ERRMSGTYPE__ |
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143 { |
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144 Uint32 tid; |
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145 int error_available; |
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146 char error_string[128]; |
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147 struct __SOUND_ERRMSGTYPE__ *next; |
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148 } ErrMsg; |
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149 |
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150 static ErrMsg *error_msgs = NULL; |
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151 static SDL_mutex *errorlist_mutex = NULL; |
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152 |
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153 static Sound_Sample *sample_list = NULL; /* this is a linked list. */ |
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154 static SDL_mutex *samplelist_mutex = NULL; |
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155 |
| 4 | 156 static const Sound_DecoderInfo **available_decoders = NULL; |
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157 static int initialized = 0; |
| 4 | 158 |
| 159 | |
| 160 /* functions ... */ | |
| 161 | |
| 162 void Sound_GetLinkedVersion(Sound_Version *ver) | |
| 163 { | |
| 164 if (ver != NULL) | |
| 165 { | |
| 166 ver->major = SOUND_VER_MAJOR; | |
| 167 ver->minor = SOUND_VER_MINOR; | |
| 168 ver->patch = SOUND_VER_PATCH; | |
| 169 } /* if */ | |
| 170 } /* Sound_GetLinkedVersion */ | |
| 171 | |
| 172 | |
| 173 int Sound_Init(void) | |
| 174 { | |
| 175 size_t i; | |
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176 size_t pos = 0; |
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177 size_t total = sizeof (decoders) / sizeof (decoders[0]); |
| 4 | 178 BAIL_IF_MACRO(initialized, ERR_IS_INITIALIZED, 0); |
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179 |
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180 sample_list = NULL; |
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181 error_msgs = NULL; |
| 4 | 182 |
| 183 available_decoders = (const Sound_DecoderInfo **) | |
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184 malloc((total) * sizeof (Sound_DecoderInfo *)); |
| 4 | 185 BAIL_IF_MACRO(available_decoders == NULL, ERR_OUT_OF_MEMORY, 0); |
| 186 | |
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187 SDL_InitSubSystem(SDL_INIT_AUDIO); |
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188 |
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189 errorlist_mutex = SDL_CreateMutex(); |
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190 samplelist_mutex = SDL_CreateMutex(); |
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191 |
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192 for (i = 0; decoders[i].funcs != NULL; i++) |
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193 { |
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194 decoders[i].available = decoders[i].funcs->init(); |
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195 if (decoders[i].available) |
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196 { |
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197 available_decoders[pos] = &(decoders[i].funcs->info); |
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198 pos++; |
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199 } /* if */ |
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200 } /* for */ |
| 4 | 201 |
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202 available_decoders[pos] = NULL; |
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203 |
| 4 | 204 initialized = 1; |
| 205 return(1); | |
| 206 } /* Sound_Init */ | |
| 207 | |
| 208 | |
| 209 int Sound_Quit(void) | |
| 210 { | |
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211 ErrMsg *err; |
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212 ErrMsg *nexterr = NULL; |
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213 size_t i; |
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214 |
| 4 | 215 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
| 216 | |
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217 while (((volatile Sound_Sample *) sample_list) != NULL) |
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218 Sound_FreeSample(sample_list); |
| 4 | 219 |
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220 initialized = 0; |
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221 |
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222 SDL_DestroyMutex(samplelist_mutex); |
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223 samplelist_mutex = NULL; |
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224 sample_list = NULL; |
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225 |
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226 for (i = 0; decoders[i].funcs != NULL; i++) |
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227 { |
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228 if (decoders[i].available) |
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229 { |
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230 decoders[i].funcs->quit(); |
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231 decoders[i].available = 0; |
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232 } /* if */ |
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233 } /* for */ |
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234 |
| 4 | 235 if (available_decoders != NULL) |
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236 free((void *) available_decoders); |
| 4 | 237 available_decoders = NULL; |
| 238 | |
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239 /* clean up error state for each thread... */ |
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240 SDL_LockMutex(errorlist_mutex); |
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241 for (err = error_msgs; err != NULL; err = nexterr) |
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242 { |
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243 nexterr = err->next; |
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244 free(err); |
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245 } /* for */ |
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246 error_msgs = NULL; |
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247 SDL_UnlockMutex(errorlist_mutex); |
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248 SDL_DestroyMutex(errorlist_mutex); |
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249 errorlist_mutex = NULL; |
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250 |
| 4 | 251 return(1); |
| 252 } /* Sound_Quit */ | |
| 253 | |
| 254 | |
| 255 const Sound_DecoderInfo **Sound_AvailableDecoders(void) | |
| 256 { | |
| 257 return(available_decoders); /* READ. ONLY. */ | |
| 258 } /* Sound_AvailableDecoders */ | |
| 259 | |
| 260 | |
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261 static ErrMsg *findErrorForCurrentThread(void) |
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262 { |
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263 ErrMsg *i; |
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264 Uint32 tid; |
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265 |
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266 if (error_msgs != NULL) |
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267 { |
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268 tid = SDL_ThreadID(); |
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269 |
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270 SDL_LockMutex(errorlist_mutex); |
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271 for (i = error_msgs; i != NULL; i = i->next) |
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272 { |
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273 if (i->tid == tid) |
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274 { |
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275 SDL_UnlockMutex(errorlist_mutex); |
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276 return(i); |
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277 } /* if */ |
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278 } /* for */ |
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279 SDL_UnlockMutex(errorlist_mutex); |
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280 } /* if */ |
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281 |
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282 return(NULL); /* no error available. */ |
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283 } /* findErrorForCurrentThread */ |
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284 |
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285 |
| 4 | 286 const char *Sound_GetError(void) |
| 287 { | |
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288 const char *retval = NULL; |
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289 ErrMsg *err; |
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290 |
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291 if (!initialized) |
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292 return(ERR_NOT_INITIALIZED); |
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293 |
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294 err = findErrorForCurrentThread(); |
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295 if ((err != NULL) && (err->error_available)) |
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296 { |
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297 retval = err->error_string; |
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298 err->error_available = 0; |
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299 } /* if */ |
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300 |
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301 return(retval); |
| 4 | 302 } /* Sound_GetError */ |
| 303 | |
| 304 | |
| 305 void Sound_ClearError(void) | |
| 306 { | |
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307 ErrMsg *err; |
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308 |
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309 if (!initialized) |
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310 return; |
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311 |
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312 err = findErrorForCurrentThread(); |
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313 if (err != NULL) |
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314 err->error_available = 0; |
| 4 | 315 } /* Sound_ClearError */ |
| 316 | |
| 317 | |
| 318 /* | |
| 319 * This is declared in the internal header. | |
| 320 */ | |
|
306
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321 void __Sound_SetError(const char *str) |
| 4 | 322 { |
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323 ErrMsg *err; |
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324 |
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325 if (str == NULL) |
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326 return; |
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327 |
|
387
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328 SNDDBG(("__Sound_SetError(\"%s\");%s\n", str, |
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329 (initialized) ? "" : " [NOT INITIALIZED!]")); |
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330 |
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331 if (!initialized) |
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332 return; |
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333 |
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334 err = findErrorForCurrentThread(); |
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335 if (err == NULL) |
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165
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336 { |
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337 err = (ErrMsg *) malloc(sizeof (ErrMsg)); |
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338 if (err == NULL) |
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339 return; /* uhh...? */ |
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340 |
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341 memset((void *) err, '\0', sizeof (ErrMsg)); |
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342 err->tid = SDL_ThreadID(); |
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343 |
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344 SDL_LockMutex(errorlist_mutex); |
|
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345 err->next = error_msgs; |
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346 error_msgs = err; |
|
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347 SDL_UnlockMutex(errorlist_mutex); |
|
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348 } /* if */ |
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349 |
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350 err->error_available = 1; |
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351 strncpy(err->error_string, str, sizeof (err->error_string)); |
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352 err->error_string[sizeof (err->error_string) - 1] = '\0'; |
|
306
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353 } /* __Sound_SetError */ |
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354 |
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355 |
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356 Uint32 __Sound_convertMsToBytePos(Sound_AudioInfo *info, Uint32 ms) |
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357 { |
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358 /* "frames" == "sample frames" */ |
|
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359 float frames_per_ms = ((float) info->rate) / 1000.0f; |
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360 Uint32 frame_offset = (Uint32) (frames_per_ms * ((float) ms)); |
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361 Uint32 frame_size = (Uint32) ((info->format & 0xFF) / 8) * info->channels; |
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362 return(frame_offset * frame_size); |
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363 } /* __Sound_convertMsToBytePos */ |
| 4 | 364 |
| 365 | |
| 366 /* | |
| 367 * -ansi and -pedantic flags prevent use of strcasecmp() on Linux, and | |
| 368 * I honestly don't want to mess around with figuring out if a given | |
| 369 * platform has "strcasecmp", "stricmp", or | |
| 370 * "compare_two_damned_strings_case_insensitive", which I hear is in the | |
| 371 * next release of Carbon. :) This is exported so decoders may use it if | |
| 372 * they like. | |
| 373 */ | |
| 374 int __Sound_strcasecmp(const char *x, const char *y) | |
| 375 { | |
| 376 int ux, uy; | |
| 377 | |
|
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378 if (x == y) /* same pointer? Both NULL? */ |
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379 return(0); |
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380 |
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381 if (x == NULL) |
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382 return(-1); |
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383 |
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384 if (y == NULL) |
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385 return(1); |
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386 |
| 4 | 387 do |
| 388 { | |
| 389 ux = toupper((int) *x); | |
| 390 uy = toupper((int) *y); | |
| 391 if (ux > uy) | |
| 392 return(1); | |
| 393 else if (ux < uy) | |
| 394 return(-1); | |
| 395 x++; | |
| 396 y++; | |
| 397 } while ((ux) && (uy)); | |
| 398 | |
| 399 return(0); | |
| 400 } /* __Sound_strcasecmp */ | |
| 401 | |
| 402 | |
| 403 /* | |
| 404 * Allocate a Sound_Sample, and fill in most of its fields. Those that need | |
| 405 * to be filled in later, by a decoder, will be initialized to zero. | |
| 406 */ | |
| 407 static Sound_Sample *alloc_sample(SDL_RWops *rw, Sound_AudioInfo *desired, | |
| 408 Uint32 bufferSize) | |
| 409 { | |
|
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410 /* |
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411 * !!! FIXME: We're going to need to pool samples, since the mixer |
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412 * !!! FIXME: might be allocating tons of these on a regular basis. |
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413 */ |
| 4 | 414 Sound_Sample *retval = malloc(sizeof (Sound_Sample)); |
| 415 Sound_SampleInternal *internal = malloc(sizeof (Sound_SampleInternal)); | |
| 416 if ((retval == NULL) || (internal == NULL)) | |
| 417 { | |
|
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418 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 419 if (retval) |
| 420 free(retval); | |
| 421 if (internal) | |
| 422 free(internal); | |
| 423 | |
| 424 return(NULL); | |
| 425 } /* if */ | |
| 426 | |
| 427 memset(retval, '\0', sizeof (Sound_Sample)); | |
| 428 memset(internal, '\0', sizeof (Sound_SampleInternal)); | |
| 429 | |
| 430 assert(bufferSize > 0); | |
| 431 retval->buffer = malloc(bufferSize); /* pure ugly. */ | |
| 432 if (!retval->buffer) | |
| 433 { | |
|
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434 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 435 free(internal); |
| 436 free(retval); | |
| 437 return(NULL); | |
| 438 } /* if */ | |
| 439 memset(retval->buffer, '\0', bufferSize); | |
| 440 retval->buffer_size = bufferSize; | |
| 441 | |
| 442 if (desired != NULL) | |
| 443 memcpy(&retval->desired, desired, sizeof (Sound_AudioInfo)); | |
| 444 | |
| 445 internal->rw = rw; | |
| 446 retval->opaque = internal; | |
| 447 return(retval); | |
| 448 } /* alloc_sample */ | |
| 449 | |
| 450 | |
|
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451 #if (defined DEBUG_CHATTER) |
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452 static __inline__ const char *fmt_to_str(Uint16 fmt) |
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453 { |
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454 switch(fmt) |
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455 { |
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456 case AUDIO_U8: |
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457 return("U8"); |
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458 case AUDIO_S8: |
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459 return("S8"); |
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460 case AUDIO_U16LSB: |
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461 return("U16LSB"); |
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462 case AUDIO_S16LSB: |
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463 return("S16LSB"); |
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464 case AUDIO_U16MSB: |
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465 return("U16MSB"); |
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466 case AUDIO_S16MSB: |
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467 return("S16MSB"); |
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468 } /* switch */ |
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469 |
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470 return("Unknown"); |
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471 } /* fmt_to_str */ |
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472 #endif |
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473 |
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474 |
| 4 | 475 /* |
| 476 * The bulk of the Sound_NewSample() work is done here... | |
| 477 * Ask the specified decoder to handle the data in (rw), and if | |
| 478 * so, construct the Sound_Sample. Otherwise, try to wind (rw)'s stream | |
| 479 * back to where it was, and return false. | |
| 480 */ | |
| 481 static int init_sample(const Sound_DecoderFunctions *funcs, | |
| 482 Sound_Sample *sample, const char *ext, | |
| 483 Sound_AudioInfo *_desired) | |
| 484 { | |
| 485 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
|
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486 Sound_AudioInfo desired; |
| 400 | 487 int pos = SDL_RWtell(internal->rw); |
| 4 | 488 |
| 489 /* fill in the funcs for this decoder... */ | |
| 490 sample->decoder = &funcs->info; | |
| 491 internal->funcs = funcs; | |
| 492 if (!funcs->open(sample, ext)) | |
| 493 { | |
| 494 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 495 return(0); | |
| 496 } /* if */ | |
| 497 | |
| 498 /* success; we've got a decoder! */ | |
| 499 | |
| 500 /* Now we need to set up the conversion buffer... */ | |
| 501 | |
| 502 memcpy(&desired, (_desired != NULL) ? _desired : &sample->actual, | |
| 503 sizeof (Sound_AudioInfo)); | |
| 504 | |
|
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505 if (desired.format == 0) |
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506 desired.format = sample->actual.format; |
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507 if (desired.channels == 0) |
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508 desired.channels = sample->actual.channels; |
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509 if (desired.rate == 0) |
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510 desired.rate = sample->actual.rate; |
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511 |
|
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512 if (Sound_BuildAudioCVT(&internal->sdlcvt, |
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513 sample->actual.format, |
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514 sample->actual.channels, |
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515 sample->actual.rate, |
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516 desired.format, |
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517 desired.channels, |
|
382
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518 desired.rate, |
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519 sample->buffer_size) == -1) |
| 4 | 520 { |
|
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521 __Sound_SetError(SDL_GetError()); |
| 4 | 522 funcs->close(sample); |
| 523 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 524 return(0); | |
| 525 } /* if */ | |
| 526 | |
| 527 if (internal->sdlcvt.len_mult > 1) | |
| 528 { | |
| 529 void *rc = realloc(sample->buffer, | |
|
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530 sample->buffer_size * internal->sdlcvt.len_mult); |
| 4 | 531 if (rc == NULL) |
| 532 { | |
| 533 funcs->close(sample); | |
| 534 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 535 return(0); | |
| 536 } /* if */ | |
| 537 | |
| 538 sample->buffer = rc; | |
| 539 } /* if */ | |
| 540 | |
| 541 /* these pointers are all one and the same. */ | |
| 542 memcpy(&sample->desired, &desired, sizeof (Sound_AudioInfo)); | |
| 543 internal->sdlcvt.buf = internal->buffer = sample->buffer; | |
| 544 internal->buffer_size = sample->buffer_size / internal->sdlcvt.len_mult; | |
| 545 internal->sdlcvt.len = internal->buffer_size; | |
| 546 | |
|
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547 /* Prepend our new Sound_Sample to the sample_list... */ |
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548 SDL_LockMutex(samplelist_mutex); |
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549 internal->next = sample_list; |
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550 if (sample_list != NULL) |
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551 ((Sound_SampleInternal *) sample_list->opaque)->prev = sample; |
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552 sample_list = sample; |
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553 SDL_UnlockMutex(samplelist_mutex); |
| 4 | 554 |
|
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555 SNDDBG(("New sample DESIRED format: %s format, %d rate, %d channels.\n", |
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556 fmt_to_str(sample->desired.format), |
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557 sample->desired.rate, |
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558 sample->desired.channels)); |
|
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559 |
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560 SNDDBG(("New sample ACTUAL format: %s format, %d rate, %d channels.\n", |
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561 fmt_to_str(sample->actual.format), |
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562 sample->actual.rate, |
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563 sample->actual.channels)); |
|
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564 |
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565 SNDDBG(("On-the-fly conversion: %s.\n", |
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566 internal->sdlcvt.needed ? "ENABLED" : "DISABLED")); |
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567 |
| 4 | 568 return(1); |
| 569 } /* init_sample */ | |
| 570 | |
| 571 | |
| 572 Sound_Sample *Sound_NewSample(SDL_RWops *rw, const char *ext, | |
| 573 Sound_AudioInfo *desired, Uint32 bSize) | |
| 574 { | |
| 575 Sound_Sample *retval; | |
|
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576 decoder_element *decoder; |
| 4 | 577 |
| 578 /* sanity checks. */ | |
| 579 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 580 BAIL_IF_MACRO(rw == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 581 | |
| 582 retval = alloc_sample(rw, desired, bSize); | |
| 583 if (!retval) | |
| 584 return(NULL); /* alloc_sample() sets error message... */ | |
| 585 | |
| 586 if (ext != NULL) | |
| 587 { | |
|
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588 for (decoder = &decoders[0]; decoder->funcs != NULL; decoder++) |
| 4 | 589 { |
|
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590 if (decoder->available) |
| 4 | 591 { |
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592 const char **decoderExt = decoder->funcs->info.extensions; |
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593 while (*decoderExt) |
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594 { |
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595 if (__Sound_strcasecmp(*decoderExt, ext) == 0) |
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596 { |
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597 if (init_sample(decoder->funcs, retval, ext, desired)) |
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598 return(retval); |
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599 break; /* done with this decoder either way. */ |
|
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600 } /* if */ |
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601 decoderExt++; |
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602 } /* while */ |
| 4 | 603 } /* if */ |
| 604 } /* for */ | |
| 605 } /* if */ | |
| 606 | |
| 607 /* no direct extension match? Try everything we've got... */ | |
|
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608 for (decoder = &decoders[0]; decoder->funcs != NULL; decoder++) |
| 4 | 609 { |
|
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610 if (decoder->available) |
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611 { |
|
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612 int should_try = 1; |
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613 const char **decoderExt = decoder->funcs->info.extensions; |
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614 |
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615 /* skip if we would have tried decoder above... */ |
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616 while (*decoderExt) |
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617 { |
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618 if (__Sound_strcasecmp(*decoderExt, ext) == 0) |
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619 { |
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620 should_try = 0; |
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621 break; |
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622 } /* if */ |
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623 decoderExt++; |
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624 } /* while */ |
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625 |
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626 if (should_try) |
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627 { |
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628 if (init_sample(decoder->funcs, retval, ext, desired)) |
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629 return(retval); |
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630 } /* if */ |
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631 } /* if */ |
| 4 | 632 } /* for */ |
| 633 | |
| 634 /* nothing could handle the sound data... */ | |
| 635 free(retval->opaque); | |
| 636 if (retval->buffer != NULL) | |
| 637 free(retval->buffer); | |
| 638 free(retval); | |
| 639 SDL_RWclose(rw); | |
|
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640 __Sound_SetError(ERR_UNSUPPORTED_FORMAT); |
| 4 | 641 return(NULL); |
| 642 } /* Sound_NewSample */ | |
| 643 | |
| 644 | |
| 645 Sound_Sample *Sound_NewSampleFromFile(const char *filename, | |
| 646 Sound_AudioInfo *desired, | |
| 647 Uint32 bufferSize) | |
| 648 { | |
| 649 const char *ext; | |
| 650 SDL_RWops *rw; | |
| 651 | |
| 652 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 653 BAIL_IF_MACRO(filename == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 654 | |
| 655 ext = strrchr(filename, '.'); | |
| 656 rw = SDL_RWFromFile(filename, "rb"); | |
|
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657 /* !!! FIXME: rw = RWops_FromFile(filename, "rb");*/ |
| 4 | 658 BAIL_IF_MACRO(rw == NULL, SDL_GetError(), NULL); |
| 659 | |
| 660 if (ext != NULL) | |
| 661 ext++; | |
| 662 | |
| 663 return(Sound_NewSample(rw, ext, desired, bufferSize)); | |
| 664 } /* Sound_NewSampleFromFile */ | |
| 665 | |
| 666 | |
|
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667 Sound_Sample *Sound_NewSampleFromMem(const Uint8 *data, |
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668 Uint32 size, |
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669 const char *ext, |
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670 Sound_AudioInfo *desired, |
|
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671 Uint32 bufferSize) |
|
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672 { |
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673 SDL_RWops *rw; |
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674 |
|
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675 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); |
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676 BAIL_IF_MACRO(data == NULL, ERR_INVALID_ARGUMENT, NULL); |
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677 BAIL_IF_MACRO(size == 0, ERR_INVALID_ARGUMENT, NULL); |
|
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678 |
|
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679 rw = SDL_RWFromMem(data, size); |
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680 /* !!! FIXME: rw = RWops_FromMem(data, size);*/ |
|
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681 BAIL_IF_MACRO(rw == NULL, SDL_GetError(), NULL); |
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682 |
|
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683 return(Sound_NewSample(rw, ext, desired, bufferSize)); |
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684 } /* Sound_NewSampleFromMem */ |
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685 |
|
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686 |
| 4 | 687 void Sound_FreeSample(Sound_Sample *sample) |
| 688 { | |
| 689 Sound_SampleInternal *internal; | |
| 690 | |
| 691 if (!initialized) | |
| 692 { | |
|
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693 __Sound_SetError(ERR_NOT_INITIALIZED); |
| 4 | 694 return; |
| 695 } /* if */ | |
| 696 | |
| 697 if (sample == NULL) | |
| 698 { | |
|
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699 __Sound_SetError(ERR_INVALID_ARGUMENT); |
| 4 | 700 return; |
| 701 } /* if */ | |
| 702 | |
| 703 internal = (Sound_SampleInternal *) sample->opaque; | |
| 704 | |
|
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705 SDL_LockMutex(samplelist_mutex); |
| 4 | 706 |
|
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707 /* update the sample_list... */ |
| 4 | 708 if (internal->prev != NULL) |
| 709 { | |
| 710 Sound_SampleInternal *prevInternal; | |
| 711 prevInternal = (Sound_SampleInternal *) internal->prev->opaque; | |
| 712 prevInternal->next = internal->next; | |
| 713 } /* if */ | |
| 714 else | |
| 715 { | |
|
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716 assert(sample_list == sample); |
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717 sample_list = internal->next; |
| 4 | 718 } /* else */ |
| 719 | |
| 720 if (internal->next != NULL) | |
| 721 { | |
| 722 Sound_SampleInternal *nextInternal; | |
| 723 nextInternal = (Sound_SampleInternal *) internal->next->opaque; | |
| 724 nextInternal->prev = internal->prev; | |
| 725 } /* if */ | |
| 726 | |
|
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727 SDL_UnlockMutex(samplelist_mutex); |
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728 |
| 4 | 729 /* nuke it... */ |
|
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730 internal->funcs->close(sample); |
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731 |
| 4 | 732 if (internal->rw != NULL) /* this condition is a "just in case" thing. */ |
| 733 SDL_RWclose(internal->rw); | |
|
167
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734 |
|
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735 if ((internal->buffer != NULL) && (internal->buffer != sample->buffer)) |
| 4 | 736 free(internal->buffer); |
|
167
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737 |
| 4 | 738 free(internal); |
|
167
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739 |
| 4 | 740 if (sample->buffer != NULL) |
| 741 free(sample->buffer); | |
|
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742 |
| 4 | 743 free(sample); |
| 744 } /* Sound_FreeSample */ | |
| 745 | |
| 746 | |
| 747 int Sound_SetBufferSize(Sound_Sample *sample, Uint32 newSize) | |
| 748 { | |
| 749 void *newBuf = NULL; | |
| 750 Sound_SampleInternal *internal = NULL; | |
| 751 | |
| 752 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 753 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 754 internal = ((Sound_SampleInternal *) sample->opaque); | |
| 755 newBuf = realloc(sample->buffer, newSize * internal->sdlcvt.len_mult); | |
| 756 BAIL_IF_MACRO(newBuf == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 757 | |
| 758 internal->sdlcvt.buf = internal->buffer = sample->buffer = newBuf; | |
| 759 sample->buffer_size = newSize; | |
| 760 internal->buffer_size = newSize / internal->sdlcvt.len_mult; | |
| 761 internal->sdlcvt.len = internal->buffer_size; | |
| 762 | |
| 763 return(1); | |
| 764 } /* Sound_SetBufferSize */ | |
| 765 | |
| 766 | |
| 767 Uint32 Sound_Decode(Sound_Sample *sample) | |
| 768 { | |
| 769 Sound_SampleInternal *internal = NULL; | |
| 770 Uint32 retval = 0; | |
| 771 | |
| 772 /* a boatload of sanity checks... */ | |
| 773 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 774 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 775 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_ERROR, ERR_PREV_ERROR, 0); | |
| 776 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_EOF, ERR_PREV_EOF, 0); | |
| 777 | |
| 778 internal = (Sound_SampleInternal *) sample->opaque; | |
| 779 | |
| 780 assert(sample->buffer != NULL); | |
| 781 assert(sample->buffer_size > 0); | |
| 782 assert(internal->buffer != NULL); | |
| 783 assert(internal->buffer_size > 0); | |
| 784 | |
| 785 /* reset EAGAIN. Decoder can flip it back on if it needs to. */ | |
|
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786 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
| 4 | 787 retval = internal->funcs->read(sample); |
|
37
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Added AIFF entry, and (for now) some multiple-streams-in-one-rwops support.
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788 |
|
163
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Moved MIDI decoder to end of array. Fixed Sound_SetError() so that it
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789 if (retval > 0 && internal->sdlcvt.needed) |
| 4 | 790 { |
| 791 internal->sdlcvt.len = retval; | |
|
143
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Start of audio converter work.
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792 Sound_ConvertAudio(&internal->sdlcvt); |
|
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|
793 retval = internal->sdlcvt.len_cvt; |
| 4 | 794 } /* if */ |
| 795 | |
| 796 return(retval); | |
| 797 } /* Sound_Decode */ | |
| 798 | |
| 799 | |
| 800 Uint32 Sound_DecodeAll(Sound_Sample *sample) | |
| 801 { | |
| 802 Sound_SampleInternal *internal = NULL; | |
| 803 void *buf = NULL; | |
| 804 Uint32 newBufSize = 0; | |
| 805 | |
| 806 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
|
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807 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_EOF, ERR_PREV_EOF, 0); |
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808 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_ERROR, ERR_PREV_ERROR, 0); |
| 4 | 809 |
| 810 internal = (Sound_SampleInternal *) sample->opaque; | |
| 811 | |
| 812 while ( ((sample->flags & SOUND_SAMPLEFLAG_EOF) == 0) && | |
| 813 ((sample->flags & SOUND_SAMPLEFLAG_ERROR) == 0) ) | |
| 814 { | |
|
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815 Uint32 br = Sound_Decode(sample); |
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816 void *ptr = realloc(buf, newBufSize + br); |
| 4 | 817 if (ptr == NULL) |
| 818 { | |
| 819 sample->flags |= SOUND_SAMPLEFLAG_ERROR; | |
|
387
fb519e6028e3
Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
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820 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 821 } /* if */ |
| 822 else | |
| 823 { | |
|
167
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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824 buf = ptr; |
| 4 | 825 memcpy( ((char *) buf) + newBufSize, sample->buffer, br ); |
| 826 newBufSize += br; | |
| 827 } /* else */ | |
| 828 } /* while */ | |
| 829 | |
|
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830 if (buf == NULL) /* ...in case first call to realloc() fails... */ |
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831 return(sample->buffer_size); |
|
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832 |
|
167
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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833 if (internal->buffer != sample->buffer) |
|
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834 free(internal->buffer); |
|
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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835 |
| 4 | 836 free(sample->buffer); |
|
167
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837 |
|
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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838 internal->sdlcvt.buf = internal->buffer = sample->buffer = buf; |
| 4 | 839 sample->buffer_size = newBufSize; |
| 840 internal->buffer_size = newBufSize / internal->sdlcvt.len_mult; | |
|
167
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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841 internal->sdlcvt.len = internal->buffer_size; |
| 4 | 842 |
| 843 return(newBufSize); | |
| 844 } /* Sound_DecodeAll */ | |
| 845 | |
|
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846 |
|
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847 int Sound_Rewind(Sound_Sample *sample) |
|
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848 { |
|
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849 Sound_SampleInternal *internal; |
|
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850 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
|
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851 |
|
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852 internal = (Sound_SampleInternal *) sample->opaque; |
|
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853 if (!internal->funcs->rewind(sample)) |
|
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854 { |
|
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855 sample->flags |= SOUND_SAMPLEFLAG_ERROR; |
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856 return(0); |
|
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857 } /* if */ |
|
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|
858 |
|
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859 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
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860 sample->flags &= ~SOUND_SAMPLEFLAG_ERROR; |
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861 sample->flags &= ~SOUND_SAMPLEFLAG_EOF; |
|
306
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Added framework for Sound_Seek() support.
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862 |
|
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Added framework for Sound_Seek() support.
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863 return(1); |
|
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Added framework for Sound_Seek() support.
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864 } /* Sound_Rewind */ |
|
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865 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
866 |
|
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Added framework for Sound_Seek() support.
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867 int Sound_Seek(Sound_Sample *sample, Uint32 ms) |
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868 { |
|
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Added framework for Sound_Seek() support.
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869 Sound_SampleInternal *internal; |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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870 |
|
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Added framework for Sound_Seek() support.
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871 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
|
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Added framework for Sound_Seek() support.
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872 if (!(sample->flags & SOUND_SAMPLEFLAG_CANSEEK)) |
|
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Added framework for Sound_Seek() support.
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873 BAIL_MACRO(ERR_CANNOT_SEEK, 0); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
874 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
875 internal = (Sound_SampleInternal *) sample->opaque; |
|
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Added framework for Sound_Seek() support.
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|
876 BAIL_IF_MACRO(!internal->funcs->seek(sample, ms), NULL, 0); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
877 |
|
311
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Logic fixes from Torbj�rn.
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|
878 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
|
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Logic fixes from Torbj�rn.
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|
879 sample->flags &= ~SOUND_SAMPLEFLAG_ERROR; |
|
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Logic fixes from Torbj�rn.
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|
880 sample->flags &= ~SOUND_SAMPLEFLAG_EOF; |
|
306
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
881 |
|
223
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882 return(1); |
|
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|
883 } /* Sound_Rewind */ |
|
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|
884 |
|
249186e31431
Sound_Rewind() support code.
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|
885 |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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|
886 Sint32 Sound_GetDuration(Sound_Sample *sample) |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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|
887 { |
|
553
5ec7f4e5e20b
Fixed compilation on pre-C99 compilers (gcc2, msvc, etc).
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
888 Sound_SampleInternal *internal; |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
Ryan C. Gordon <icculus@icculus.org>
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450
diff
changeset
|
889 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, -1); |
|
553
5ec7f4e5e20b
Fixed compilation on pre-C99 compilers (gcc2, msvc, etc).
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parents:
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|
890 internal = (Sound_SampleInternal *) sample->opaque; |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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parents:
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|
891 return(internal->total_time); |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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|
892 } /* Sound_GetDuration */ |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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893 |
| 4 | 894 /* end of SDL_sound.c ... */ |
| 895 |