Mercurial > SDL_sound_CoreAudio
annotate SDL_sound.c @ 567:83fff24e5f71
This file shouldn't be here.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Fri, 30 Jan 2009 19:55:21 -0500 |
| parents | 7e08477b0fc1 |
| children | 8d62447b75f2 |
| rev | line source |
|---|---|
| 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; |
| 450 | 65 |
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66 typedef struct |
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67 { |
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68 int available; |
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69 const Sound_DecoderFunctions *funcs; |
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70 } decoder_element; |
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71 |
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72 static decoder_element decoders[] = |
| 4 | 73 { |
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74 #if (defined SOUND_SUPPORTS_MPG123) |
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75 { 0, &__Sound_DecoderFunctions_MPG123 }, |
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76 #endif |
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77 |
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78 #if (defined SOUND_SUPPORTS_MODPLUG) |
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79 { 0, &__Sound_DecoderFunctions_MODPLUG }, |
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80 #endif |
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81 |
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82 #if (defined SOUND_SUPPORTS_MIKMOD) |
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83 { 0, &__Sound_DecoderFunctions_MIKMOD }, |
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84 #endif |
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85 |
| 20 | 86 #if (defined SOUND_SUPPORTS_WAV) |
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87 { 0, &__Sound_DecoderFunctions_WAV }, |
| 20 | 88 #endif |
| 89 | |
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90 #if (defined SOUND_SUPPORTS_AIFF) |
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91 { 0, &__Sound_DecoderFunctions_AIFF }, |
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92 #endif |
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93 |
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94 #if (defined SOUND_SUPPORTS_AU) |
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95 { 0, &__Sound_DecoderFunctions_AU }, |
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96 #endif |
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97 |
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98 #if (defined SOUND_SUPPORTS_OGG) |
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99 { 0, &__Sound_DecoderFunctions_OGG }, |
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100 #endif |
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101 |
| 4 | 102 #if (defined SOUND_SUPPORTS_VOC) |
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103 { 0, &__Sound_DecoderFunctions_VOC }, |
| 4 | 104 #endif |
| 105 | |
| 106 #if (defined SOUND_SUPPORTS_RAW) | |
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107 { 0, &__Sound_DecoderFunctions_RAW }, |
| 4 | 108 #endif |
| 102 | 109 |
| 110 #if (defined SOUND_SUPPORTS_SHN) | |
| 111 { 0, &__Sound_DecoderFunctions_SHN }, | |
| 112 #endif | |
| 110 | 113 |
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114 #if (defined SOUND_SUPPORTS_FLAC) |
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115 { 0, &__Sound_DecoderFunctions_FLAC }, |
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116 #endif |
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117 |
| 110 | 118 #if (defined SOUND_SUPPORTS_MIDI) |
| 119 { 0, &__Sound_DecoderFunctions_MIDI }, | |
| 120 #endif | |
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121 |
| 322 | 122 #if (defined SOUND_SUPPORTS_QUICKTIME) |
| 123 { 0, &__Sound_DecoderFunctions_QuickTime }, | |
| 124 #endif | |
| 125 | |
| 450 | 126 #if (defined SOUND_SUPPORTS_SPEEX) |
| 127 { 0, &__Sound_DecoderFunctions_SPEEX }, | |
| 128 #endif | |
| 129 | |
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130 { 0, NULL } |
| 4 | 131 }; |
| 132 | |
| 133 | |
| 134 | |
| 135 /* General SDL_sound state ... */ | |
| 136 | |
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137 typedef struct __SOUND_ERRMSGTYPE__ |
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138 { |
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139 Uint32 tid; |
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140 int error_available; |
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141 char error_string[128]; |
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142 struct __SOUND_ERRMSGTYPE__ *next; |
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143 } ErrMsg; |
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144 |
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145 static ErrMsg *error_msgs = NULL; |
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146 static SDL_mutex *errorlist_mutex = NULL; |
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147 |
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148 static Sound_Sample *sample_list = NULL; /* this is a linked list. */ |
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149 static SDL_mutex *samplelist_mutex = NULL; |
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150 |
| 4 | 151 static const Sound_DecoderInfo **available_decoders = NULL; |
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152 static int initialized = 0; |
| 4 | 153 |
| 154 | |
| 155 /* functions ... */ | |
| 156 | |
| 157 void Sound_GetLinkedVersion(Sound_Version *ver) | |
| 158 { | |
| 159 if (ver != NULL) | |
| 160 { | |
| 161 ver->major = SOUND_VER_MAJOR; | |
| 162 ver->minor = SOUND_VER_MINOR; | |
| 163 ver->patch = SOUND_VER_PATCH; | |
| 164 } /* if */ | |
| 165 } /* Sound_GetLinkedVersion */ | |
| 166 | |
| 167 | |
| 168 int Sound_Init(void) | |
| 169 { | |
| 170 size_t i; | |
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171 size_t pos = 0; |
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172 size_t total = sizeof (decoders) / sizeof (decoders[0]); |
| 4 | 173 BAIL_IF_MACRO(initialized, ERR_IS_INITIALIZED, 0); |
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174 |
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175 sample_list = NULL; |
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176 error_msgs = NULL; |
| 4 | 177 |
| 178 available_decoders = (const Sound_DecoderInfo **) | |
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179 malloc((total) * sizeof (Sound_DecoderInfo *)); |
| 4 | 180 BAIL_IF_MACRO(available_decoders == NULL, ERR_OUT_OF_MEMORY, 0); |
| 181 | |
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182 SDL_InitSubSystem(SDL_INIT_AUDIO); |
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183 |
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184 errorlist_mutex = SDL_CreateMutex(); |
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185 samplelist_mutex = SDL_CreateMutex(); |
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186 |
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187 for (i = 0; decoders[i].funcs != NULL; i++) |
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188 { |
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189 decoders[i].available = decoders[i].funcs->init(); |
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190 if (decoders[i].available) |
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191 { |
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192 available_decoders[pos] = &(decoders[i].funcs->info); |
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193 pos++; |
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194 } /* if */ |
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195 } /* for */ |
| 4 | 196 |
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197 available_decoders[pos] = NULL; |
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198 |
| 4 | 199 initialized = 1; |
| 200 return(1); | |
| 201 } /* Sound_Init */ | |
| 202 | |
| 203 | |
| 204 int Sound_Quit(void) | |
| 205 { | |
|
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206 ErrMsg *err; |
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207 ErrMsg *nexterr = NULL; |
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208 size_t i; |
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209 |
| 4 | 210 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
| 211 | |
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212 while (((volatile Sound_Sample *) sample_list) != NULL) |
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213 Sound_FreeSample(sample_list); |
| 4 | 214 |
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215 initialized = 0; |
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216 |
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217 SDL_DestroyMutex(samplelist_mutex); |
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218 samplelist_mutex = NULL; |
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219 sample_list = NULL; |
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220 |
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118
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221 for (i = 0; decoders[i].funcs != NULL; i++) |
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222 { |
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223 if (decoders[i].available) |
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224 { |
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225 decoders[i].funcs->quit(); |
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226 decoders[i].available = 0; |
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227 } /* if */ |
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228 } /* for */ |
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229 |
| 4 | 230 if (available_decoders != NULL) |
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231 free((void *) available_decoders); |
| 4 | 232 available_decoders = NULL; |
| 233 | |
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234 /* clean up error state for each thread... */ |
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235 SDL_LockMutex(errorlist_mutex); |
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236 for (err = error_msgs; err != NULL; err = nexterr) |
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237 { |
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238 nexterr = err->next; |
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239 free(err); |
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240 } /* for */ |
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241 error_msgs = NULL; |
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242 SDL_UnlockMutex(errorlist_mutex); |
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243 SDL_DestroyMutex(errorlist_mutex); |
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244 errorlist_mutex = NULL; |
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245 |
| 4 | 246 return(1); |
| 247 } /* Sound_Quit */ | |
| 248 | |
| 249 | |
| 250 const Sound_DecoderInfo **Sound_AvailableDecoders(void) | |
| 251 { | |
| 252 return(available_decoders); /* READ. ONLY. */ | |
| 253 } /* Sound_AvailableDecoders */ | |
| 254 | |
| 255 | |
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219
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256 static ErrMsg *findErrorForCurrentThread(void) |
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257 { |
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258 ErrMsg *i; |
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259 Uint32 tid; |
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260 |
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261 if (error_msgs != NULL) |
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262 { |
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263 tid = SDL_ThreadID(); |
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264 |
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265 SDL_LockMutex(errorlist_mutex); |
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266 for (i = error_msgs; i != NULL; i = i->next) |
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267 { |
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268 if (i->tid == tid) |
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269 { |
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270 SDL_UnlockMutex(errorlist_mutex); |
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271 return(i); |
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272 } /* if */ |
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273 } /* for */ |
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274 SDL_UnlockMutex(errorlist_mutex); |
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275 } /* if */ |
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276 |
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277 return(NULL); /* no error available. */ |
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278 } /* findErrorForCurrentThread */ |
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279 |
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280 |
| 4 | 281 const char *Sound_GetError(void) |
| 282 { | |
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283 const char *retval = NULL; |
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284 ErrMsg *err; |
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285 |
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286 if (!initialized) |
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287 return(ERR_NOT_INITIALIZED); |
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288 |
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289 err = findErrorForCurrentThread(); |
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290 if ((err != NULL) && (err->error_available)) |
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291 { |
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292 retval = err->error_string; |
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293 err->error_available = 0; |
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294 } /* if */ |
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295 |
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296 return(retval); |
| 4 | 297 } /* Sound_GetError */ |
| 298 | |
| 299 | |
| 300 void Sound_ClearError(void) | |
| 301 { | |
|
226
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302 ErrMsg *err; |
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303 |
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304 if (!initialized) |
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305 return; |
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306 |
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307 err = findErrorForCurrentThread(); |
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308 if (err != NULL) |
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309 err->error_available = 0; |
| 4 | 310 } /* Sound_ClearError */ |
| 311 | |
| 312 | |
| 313 /* | |
| 314 * This is declared in the internal header. | |
| 315 */ | |
|
306
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316 void __Sound_SetError(const char *str) |
| 4 | 317 { |
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318 ErrMsg *err; |
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319 |
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320 if (str == NULL) |
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321 return; |
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322 |
|
387
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323 SNDDBG(("__Sound_SetError(\"%s\");%s\n", str, |
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226
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324 (initialized) ? "" : " [NOT INITIALIZED!]")); |
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325 |
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326 if (!initialized) |
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327 return; |
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328 |
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329 err = findErrorForCurrentThread(); |
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330 if (err == NULL) |
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331 { |
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332 err = (ErrMsg *) malloc(sizeof (ErrMsg)); |
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333 if (err == NULL) |
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334 return; /* uhh...? */ |
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335 |
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336 memset((void *) err, '\0', sizeof (ErrMsg)); |
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337 err->tid = SDL_ThreadID(); |
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338 |
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339 SDL_LockMutex(errorlist_mutex); |
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340 err->next = error_msgs; |
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341 error_msgs = err; |
|
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342 SDL_UnlockMutex(errorlist_mutex); |
|
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343 } /* if */ |
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344 |
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345 err->error_available = 1; |
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346 strncpy(err->error_string, str, sizeof (err->error_string)); |
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347 err->error_string[sizeof (err->error_string) - 1] = '\0'; |
|
306
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348 } /* __Sound_SetError */ |
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349 |
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350 |
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351 Uint32 __Sound_convertMsToBytePos(Sound_AudioInfo *info, Uint32 ms) |
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352 { |
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353 /* "frames" == "sample frames" */ |
|
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354 float frames_per_ms = ((float) info->rate) / 1000.0f; |
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355 Uint32 frame_offset = (Uint32) (frames_per_ms * ((float) ms)); |
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356 Uint32 frame_size = (Uint32) ((info->format & 0xFF) / 8) * info->channels; |
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357 return(frame_offset * frame_size); |
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358 } /* __Sound_convertMsToBytePos */ |
| 4 | 359 |
| 360 | |
| 361 /* | |
| 362 * -ansi and -pedantic flags prevent use of strcasecmp() on Linux, and | |
| 363 * I honestly don't want to mess around with figuring out if a given | |
| 364 * platform has "strcasecmp", "stricmp", or | |
| 365 * "compare_two_damned_strings_case_insensitive", which I hear is in the | |
| 366 * next release of Carbon. :) This is exported so decoders may use it if | |
| 367 * they like. | |
| 368 */ | |
| 369 int __Sound_strcasecmp(const char *x, const char *y) | |
| 370 { | |
| 371 int ux, uy; | |
| 372 | |
|
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373 if (x == y) /* same pointer? Both NULL? */ |
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374 return(0); |
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375 |
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376 if (x == NULL) |
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377 return(-1); |
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378 |
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379 if (y == NULL) |
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380 return(1); |
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381 |
| 4 | 382 do |
| 383 { | |
| 384 ux = toupper((int) *x); | |
| 385 uy = toupper((int) *y); | |
| 386 if (ux > uy) | |
| 387 return(1); | |
| 388 else if (ux < uy) | |
| 389 return(-1); | |
| 390 x++; | |
| 391 y++; | |
| 392 } while ((ux) && (uy)); | |
| 393 | |
| 394 return(0); | |
| 395 } /* __Sound_strcasecmp */ | |
| 396 | |
| 397 | |
| 398 /* | |
| 399 * Allocate a Sound_Sample, and fill in most of its fields. Those that need | |
| 400 * to be filled in later, by a decoder, will be initialized to zero. | |
| 401 */ | |
| 402 static Sound_Sample *alloc_sample(SDL_RWops *rw, Sound_AudioInfo *desired, | |
| 403 Uint32 bufferSize) | |
| 404 { | |
|
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405 /* |
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406 * !!! FIXME: We're going to need to pool samples, since the mixer |
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407 * !!! FIXME: might be allocating tons of these on a regular basis. |
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408 */ |
| 4 | 409 Sound_Sample *retval = malloc(sizeof (Sound_Sample)); |
| 410 Sound_SampleInternal *internal = malloc(sizeof (Sound_SampleInternal)); | |
| 411 if ((retval == NULL) || (internal == NULL)) | |
| 412 { | |
|
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413 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 414 if (retval) |
| 415 free(retval); | |
| 416 if (internal) | |
| 417 free(internal); | |
| 418 | |
| 419 return(NULL); | |
| 420 } /* if */ | |
| 421 | |
| 422 memset(retval, '\0', sizeof (Sound_Sample)); | |
| 423 memset(internal, '\0', sizeof (Sound_SampleInternal)); | |
| 424 | |
| 425 assert(bufferSize > 0); | |
| 426 retval->buffer = malloc(bufferSize); /* pure ugly. */ | |
| 427 if (!retval->buffer) | |
| 428 { | |
|
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429 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 430 free(internal); |
| 431 free(retval); | |
| 432 return(NULL); | |
| 433 } /* if */ | |
| 434 memset(retval->buffer, '\0', bufferSize); | |
| 435 retval->buffer_size = bufferSize; | |
| 436 | |
| 437 if (desired != NULL) | |
| 438 memcpy(&retval->desired, desired, sizeof (Sound_AudioInfo)); | |
| 439 | |
| 440 internal->rw = rw; | |
| 441 retval->opaque = internal; | |
| 442 return(retval); | |
| 443 } /* alloc_sample */ | |
| 444 | |
| 445 | |
|
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446 #if (defined DEBUG_CHATTER) |
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447 static __inline__ const char *fmt_to_str(Uint16 fmt) |
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448 { |
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449 switch(fmt) |
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450 { |
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451 case AUDIO_U8: |
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452 return("U8"); |
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453 case AUDIO_S8: |
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454 return("S8"); |
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455 case AUDIO_U16LSB: |
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456 return("U16LSB"); |
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457 case AUDIO_S16LSB: |
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458 return("S16LSB"); |
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459 case AUDIO_U16MSB: |
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460 return("U16MSB"); |
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461 case AUDIO_S16MSB: |
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462 return("S16MSB"); |
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463 } /* switch */ |
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464 |
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465 return("Unknown"); |
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466 } /* fmt_to_str */ |
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467 #endif |
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468 |
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469 |
| 4 | 470 /* |
| 471 * The bulk of the Sound_NewSample() work is done here... | |
| 472 * Ask the specified decoder to handle the data in (rw), and if | |
| 473 * so, construct the Sound_Sample. Otherwise, try to wind (rw)'s stream | |
| 474 * back to where it was, and return false. | |
| 475 */ | |
| 476 static int init_sample(const Sound_DecoderFunctions *funcs, | |
| 477 Sound_Sample *sample, const char *ext, | |
| 478 Sound_AudioInfo *_desired) | |
| 479 { | |
| 480 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
|
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481 Sound_AudioInfo desired; |
| 400 | 482 int pos = SDL_RWtell(internal->rw); |
| 4 | 483 |
| 484 /* fill in the funcs for this decoder... */ | |
| 485 sample->decoder = &funcs->info; | |
| 486 internal->funcs = funcs; | |
| 487 if (!funcs->open(sample, ext)) | |
| 488 { | |
| 489 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 490 return(0); | |
| 491 } /* if */ | |
| 492 | |
| 493 /* success; we've got a decoder! */ | |
| 494 | |
| 495 /* Now we need to set up the conversion buffer... */ | |
| 496 | |
| 497 memcpy(&desired, (_desired != NULL) ? _desired : &sample->actual, | |
| 498 sizeof (Sound_AudioInfo)); | |
| 499 | |
|
340
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500 if (desired.format == 0) |
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501 desired.format = sample->actual.format; |
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502 if (desired.channels == 0) |
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503 desired.channels = sample->actual.channels; |
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504 if (desired.rate == 0) |
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505 desired.rate = sample->actual.rate; |
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506 |
|
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507 if (Sound_BuildAudioCVT(&internal->sdlcvt, |
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508 sample->actual.format, |
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509 sample->actual.channels, |
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510 sample->actual.rate, |
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511 desired.format, |
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512 desired.channels, |
|
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513 desired.rate, |
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514 sample->buffer_size) == -1) |
| 4 | 515 { |
|
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516 __Sound_SetError(SDL_GetError()); |
| 4 | 517 funcs->close(sample); |
| 518 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 519 return(0); | |
| 520 } /* if */ | |
| 521 | |
| 522 if (internal->sdlcvt.len_mult > 1) | |
| 523 { | |
| 524 void *rc = realloc(sample->buffer, | |
|
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525 sample->buffer_size * internal->sdlcvt.len_mult); |
| 4 | 526 if (rc == NULL) |
| 527 { | |
| 528 funcs->close(sample); | |
| 529 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 530 return(0); | |
| 531 } /* if */ | |
| 532 | |
| 533 sample->buffer = rc; | |
| 534 } /* if */ | |
| 535 | |
| 536 /* these pointers are all one and the same. */ | |
| 537 memcpy(&sample->desired, &desired, sizeof (Sound_AudioInfo)); | |
| 538 internal->sdlcvt.buf = internal->buffer = sample->buffer; | |
| 539 internal->buffer_size = sample->buffer_size / internal->sdlcvt.len_mult; | |
| 540 internal->sdlcvt.len = internal->buffer_size; | |
| 541 | |
|
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542 /* Prepend our new Sound_Sample to the sample_list... */ |
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543 SDL_LockMutex(samplelist_mutex); |
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544 internal->next = sample_list; |
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545 if (sample_list != NULL) |
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546 ((Sound_SampleInternal *) sample_list->opaque)->prev = sample; |
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547 sample_list = sample; |
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548 SDL_UnlockMutex(samplelist_mutex); |
| 4 | 549 |
|
62
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550 SNDDBG(("New sample DESIRED format: %s format, %d rate, %d channels.\n", |
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551 fmt_to_str(sample->desired.format), |
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552 sample->desired.rate, |
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553 sample->desired.channels)); |
|
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554 |
|
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555 SNDDBG(("New sample ACTUAL format: %s format, %d rate, %d channels.\n", |
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556 fmt_to_str(sample->actual.format), |
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557 sample->actual.rate, |
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558 sample->actual.channels)); |
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559 |
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560 SNDDBG(("On-the-fly conversion: %s.\n", |
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561 internal->sdlcvt.needed ? "ENABLED" : "DISABLED")); |
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562 |
| 4 | 563 return(1); |
| 564 } /* init_sample */ | |
| 565 | |
| 566 | |
| 567 Sound_Sample *Sound_NewSample(SDL_RWops *rw, const char *ext, | |
| 568 Sound_AudioInfo *desired, Uint32 bSize) | |
| 569 { | |
| 570 Sound_Sample *retval; | |
|
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571 decoder_element *decoder; |
| 4 | 572 |
| 573 /* sanity checks. */ | |
| 574 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 575 BAIL_IF_MACRO(rw == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 576 | |
| 577 retval = alloc_sample(rw, desired, bSize); | |
| 578 if (!retval) | |
| 579 return(NULL); /* alloc_sample() sets error message... */ | |
| 580 | |
| 581 if (ext != NULL) | |
| 582 { | |
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583 for (decoder = &decoders[0]; decoder->funcs != NULL; decoder++) |
| 4 | 584 { |
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585 if (decoder->available) |
| 4 | 586 { |
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587 const char **decoderExt = decoder->funcs->info.extensions; |
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588 while (*decoderExt) |
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589 { |
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590 if (__Sound_strcasecmp(*decoderExt, ext) == 0) |
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591 { |
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592 if (init_sample(decoder->funcs, retval, ext, desired)) |
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593 return(retval); |
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594 break; /* done with this decoder either way. */ |
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595 } /* if */ |
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596 decoderExt++; |
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597 } /* while */ |
| 4 | 598 } /* if */ |
| 599 } /* for */ | |
| 600 } /* if */ | |
| 601 | |
| 602 /* no direct extension match? Try everything we've got... */ | |
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603 for (decoder = &decoders[0]; decoder->funcs != NULL; decoder++) |
| 4 | 604 { |
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605 if (decoder->available) |
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606 { |
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607 int should_try = 1; |
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608 const char **decoderExt = decoder->funcs->info.extensions; |
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609 |
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610 /* skip if we would have tried decoder above... */ |
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611 while (*decoderExt) |
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612 { |
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613 if (__Sound_strcasecmp(*decoderExt, ext) == 0) |
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614 { |
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615 should_try = 0; |
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616 break; |
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617 } /* if */ |
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618 decoderExt++; |
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619 } /* while */ |
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620 |
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621 if (should_try) |
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622 { |
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623 if (init_sample(decoder->funcs, retval, ext, desired)) |
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624 return(retval); |
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625 } /* if */ |
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626 } /* if */ |
| 4 | 627 } /* for */ |
| 628 | |
| 629 /* nothing could handle the sound data... */ | |
| 630 free(retval->opaque); | |
| 631 if (retval->buffer != NULL) | |
| 632 free(retval->buffer); | |
| 633 free(retval); | |
| 634 SDL_RWclose(rw); | |
|
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635 __Sound_SetError(ERR_UNSUPPORTED_FORMAT); |
| 4 | 636 return(NULL); |
| 637 } /* Sound_NewSample */ | |
| 638 | |
| 639 | |
| 640 Sound_Sample *Sound_NewSampleFromFile(const char *filename, | |
| 641 Sound_AudioInfo *desired, | |
| 642 Uint32 bufferSize) | |
| 643 { | |
| 644 const char *ext; | |
| 645 SDL_RWops *rw; | |
| 646 | |
| 647 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 648 BAIL_IF_MACRO(filename == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 649 | |
| 650 ext = strrchr(filename, '.'); | |
| 651 rw = SDL_RWFromFile(filename, "rb"); | |
|
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652 /* !!! FIXME: rw = RWops_FromFile(filename, "rb");*/ |
| 4 | 653 BAIL_IF_MACRO(rw == NULL, SDL_GetError(), NULL); |
| 654 | |
| 655 if (ext != NULL) | |
| 656 ext++; | |
| 657 | |
| 658 return(Sound_NewSample(rw, ext, desired, bufferSize)); | |
| 659 } /* Sound_NewSampleFromFile */ | |
| 660 | |
| 661 | |
|
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662 Sound_Sample *Sound_NewSampleFromMem(const Uint8 *data, |
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663 Uint32 size, |
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664 const char *ext, |
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665 Sound_AudioInfo *desired, |
|
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666 Uint32 bufferSize) |
|
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667 { |
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668 SDL_RWops *rw; |
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669 |
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670 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); |
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671 BAIL_IF_MACRO(data == NULL, ERR_INVALID_ARGUMENT, NULL); |
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672 BAIL_IF_MACRO(size == 0, ERR_INVALID_ARGUMENT, NULL); |
|
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673 |
|
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674 rw = SDL_RWFromMem(data, size); |
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675 /* !!! FIXME: rw = RWops_FromMem(data, size);*/ |
|
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676 BAIL_IF_MACRO(rw == NULL, SDL_GetError(), NULL); |
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677 |
|
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678 return(Sound_NewSample(rw, ext, desired, bufferSize)); |
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679 } /* Sound_NewSampleFromMem */ |
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680 |
|
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681 |
| 4 | 682 void Sound_FreeSample(Sound_Sample *sample) |
| 683 { | |
| 684 Sound_SampleInternal *internal; | |
| 685 | |
| 686 if (!initialized) | |
| 687 { | |
|
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688 __Sound_SetError(ERR_NOT_INITIALIZED); |
| 4 | 689 return; |
| 690 } /* if */ | |
| 691 | |
| 692 if (sample == NULL) | |
| 693 { | |
|
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694 __Sound_SetError(ERR_INVALID_ARGUMENT); |
| 4 | 695 return; |
| 696 } /* if */ | |
| 697 | |
| 698 internal = (Sound_SampleInternal *) sample->opaque; | |
| 699 | |
|
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700 SDL_LockMutex(samplelist_mutex); |
| 4 | 701 |
|
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702 /* update the sample_list... */ |
| 4 | 703 if (internal->prev != NULL) |
| 704 { | |
| 705 Sound_SampleInternal *prevInternal; | |
| 706 prevInternal = (Sound_SampleInternal *) internal->prev->opaque; | |
| 707 prevInternal->next = internal->next; | |
| 708 } /* if */ | |
| 709 else | |
| 710 { | |
|
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711 assert(sample_list == sample); |
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712 sample_list = internal->next; |
| 4 | 713 } /* else */ |
| 714 | |
| 715 if (internal->next != NULL) | |
| 716 { | |
| 717 Sound_SampleInternal *nextInternal; | |
| 718 nextInternal = (Sound_SampleInternal *) internal->next->opaque; | |
| 719 nextInternal->prev = internal->prev; | |
| 720 } /* if */ | |
| 721 | |
|
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722 SDL_UnlockMutex(samplelist_mutex); |
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723 |
| 4 | 724 /* nuke it... */ |
|
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725 internal->funcs->close(sample); |
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726 |
| 4 | 727 if (internal->rw != NULL) /* this condition is a "just in case" thing. */ |
| 728 SDL_RWclose(internal->rw); | |
|
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729 |
|
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730 if ((internal->buffer != NULL) && (internal->buffer != sample->buffer)) |
| 4 | 731 free(internal->buffer); |
|
167
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732 |
| 4 | 733 free(internal); |
|
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734 |
| 4 | 735 if (sample->buffer != NULL) |
| 736 free(sample->buffer); | |
|
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737 |
| 4 | 738 free(sample); |
| 739 } /* Sound_FreeSample */ | |
| 740 | |
| 741 | |
| 742 int Sound_SetBufferSize(Sound_Sample *sample, Uint32 newSize) | |
| 743 { | |
| 744 void *newBuf = NULL; | |
| 745 Sound_SampleInternal *internal = NULL; | |
| 746 | |
| 747 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 748 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 749 internal = ((Sound_SampleInternal *) sample->opaque); | |
| 750 newBuf = realloc(sample->buffer, newSize * internal->sdlcvt.len_mult); | |
| 751 BAIL_IF_MACRO(newBuf == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 752 | |
| 753 internal->sdlcvt.buf = internal->buffer = sample->buffer = newBuf; | |
| 754 sample->buffer_size = newSize; | |
| 755 internal->buffer_size = newSize / internal->sdlcvt.len_mult; | |
| 756 internal->sdlcvt.len = internal->buffer_size; | |
| 757 | |
| 758 return(1); | |
| 759 } /* Sound_SetBufferSize */ | |
| 760 | |
| 761 | |
| 762 Uint32 Sound_Decode(Sound_Sample *sample) | |
| 763 { | |
| 764 Sound_SampleInternal *internal = NULL; | |
| 765 Uint32 retval = 0; | |
| 766 | |
| 767 /* a boatload of sanity checks... */ | |
| 768 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 769 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 770 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_ERROR, ERR_PREV_ERROR, 0); | |
| 771 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_EOF, ERR_PREV_EOF, 0); | |
| 772 | |
| 773 internal = (Sound_SampleInternal *) sample->opaque; | |
| 774 | |
| 775 assert(sample->buffer != NULL); | |
| 776 assert(sample->buffer_size > 0); | |
| 777 assert(internal->buffer != NULL); | |
| 778 assert(internal->buffer_size > 0); | |
| 779 | |
| 780 /* reset EAGAIN. Decoder can flip it back on if it needs to. */ | |
|
311
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Logic fixes from Torbj�rn.
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781 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
| 4 | 782 retval = internal->funcs->read(sample); |
|
37
f27bcbcaeab1
Added AIFF entry, and (for now) some multiple-streams-in-one-rwops support.
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783 |
|
163
b6d6f994e970
Moved MIDI decoder to end of array. Fixed Sound_SetError() so that it
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784 if (retval > 0 && internal->sdlcvt.needed) |
| 4 | 785 { |
| 786 internal->sdlcvt.len = retval; | |
|
143
3e60862fbd76
Start of audio converter work.
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787 Sound_ConvertAudio(&internal->sdlcvt); |
|
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Start of audio converter work.
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788 retval = internal->sdlcvt.len_cvt; |
| 4 | 789 } /* if */ |
| 790 | |
| 791 return(retval); | |
| 792 } /* Sound_Decode */ | |
| 793 | |
| 794 | |
| 795 Uint32 Sound_DecodeAll(Sound_Sample *sample) | |
| 796 { | |
| 797 Sound_SampleInternal *internal = NULL; | |
| 798 void *buf = NULL; | |
| 799 Uint32 newBufSize = 0; | |
| 800 | |
| 801 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
|
172
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Sound_DecodeAll() is now more robust.
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802 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_EOF, ERR_PREV_EOF, 0); |
|
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803 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_ERROR, ERR_PREV_ERROR, 0); |
| 4 | 804 |
| 805 internal = (Sound_SampleInternal *) sample->opaque; | |
| 806 | |
| 807 while ( ((sample->flags & SOUND_SAMPLEFLAG_EOF) == 0) && | |
| 808 ((sample->flags & SOUND_SAMPLEFLAG_ERROR) == 0) ) | |
| 809 { | |
|
172
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810 Uint32 br = Sound_Decode(sample); |
|
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Sound_DecodeAll() is now more robust.
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811 void *ptr = realloc(buf, newBufSize + br); |
| 4 | 812 if (ptr == NULL) |
| 813 { | |
| 814 sample->flags |= SOUND_SAMPLEFLAG_ERROR; | |
|
387
fb519e6028e3
Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
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815 __Sound_SetError(ERR_OUT_OF_MEMORY); |
| 4 | 816 } /* if */ |
| 817 else | |
| 818 { | |
|
167
82acaa7107c2
Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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819 buf = ptr; |
| 4 | 820 memcpy( ((char *) buf) + newBufSize, sample->buffer, br ); |
| 821 newBufSize += br; | |
| 822 } /* else */ | |
| 823 } /* while */ | |
| 824 | |
|
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825 if (buf == NULL) /* ...in case first call to realloc() fails... */ |
|
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826 return(sample->buffer_size); |
|
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Sound_DecodeAll() is now more robust.
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827 |
|
167
82acaa7107c2
Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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828 if (internal->buffer != sample->buffer) |
|
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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829 free(internal->buffer); |
|
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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830 |
| 4 | 831 free(sample->buffer); |
|
167
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Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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|
832 |
|
82acaa7107c2
Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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833 internal->sdlcvt.buf = internal->buffer = sample->buffer = buf; |
| 4 | 834 sample->buffer_size = newBufSize; |
| 835 internal->buffer_size = newBufSize / internal->sdlcvt.len_mult; | |
|
167
82acaa7107c2
Fixed Sound_DecodeAll(), and made Sound_FreeSample() a little more robust.
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836 internal->sdlcvt.len = internal->buffer_size; |
| 4 | 837 |
| 838 return(newBufSize); | |
| 839 } /* Sound_DecodeAll */ | |
| 840 | |
|
223
249186e31431
Sound_Rewind() support code.
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841 |
|
249186e31431
Sound_Rewind() support code.
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842 int Sound_Rewind(Sound_Sample *sample) |
|
249186e31431
Sound_Rewind() support code.
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843 { |
|
249186e31431
Sound_Rewind() support code.
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844 Sound_SampleInternal *internal; |
|
249186e31431
Sound_Rewind() support code.
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845 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
|
249186e31431
Sound_Rewind() support code.
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846 |
|
249186e31431
Sound_Rewind() support code.
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|
847 internal = (Sound_SampleInternal *) sample->opaque; |
|
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Sound_Rewind() support code.
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848 if (!internal->funcs->rewind(sample)) |
|
249186e31431
Sound_Rewind() support code.
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849 { |
|
249186e31431
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850 sample->flags |= SOUND_SAMPLEFLAG_ERROR; |
|
249186e31431
Sound_Rewind() support code.
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851 return(0); |
|
249186e31431
Sound_Rewind() support code.
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852 } /* if */ |
|
249186e31431
Sound_Rewind() support code.
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|
853 |
|
311
d62c05322a3e
Logic fixes from Torbj�rn.
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diff
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|
854 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
|
d62c05322a3e
Logic fixes from Torbj�rn.
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855 sample->flags &= ~SOUND_SAMPLEFLAG_ERROR; |
|
d62c05322a3e
Logic fixes from Torbj�rn.
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|
856 sample->flags &= ~SOUND_SAMPLEFLAG_EOF; |
|
306
c97be6e1bd27
Added framework for Sound_Seek() support.
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diff
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|
857 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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858 return(1); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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859 } /* Sound_Rewind */ |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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860 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
861 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
862 int Sound_Seek(Sound_Sample *sample, Uint32 ms) |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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863 { |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
864 Sound_SampleInternal *internal; |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
865 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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diff
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|
866 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
867 if (!(sample->flags & SOUND_SAMPLEFLAG_CANSEEK)) |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
868 BAIL_MACRO(ERR_CANNOT_SEEK, 0); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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parents:
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|
869 |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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diff
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|
870 internal = (Sound_SampleInternal *) sample->opaque; |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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|
871 BAIL_IF_MACRO(!internal->funcs->seek(sample, ms), NULL, 0); |
|
c97be6e1bd27
Added framework for Sound_Seek() support.
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diff
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|
872 |
|
311
d62c05322a3e
Logic fixes from Torbj�rn.
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diff
changeset
|
873 sample->flags &= ~SOUND_SAMPLEFLAG_EAGAIN; |
|
d62c05322a3e
Logic fixes from Torbj�rn.
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parents:
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|
874 sample->flags &= ~SOUND_SAMPLEFLAG_ERROR; |
|
d62c05322a3e
Logic fixes from Torbj�rn.
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changeset
|
875 sample->flags &= ~SOUND_SAMPLEFLAG_EOF; |
|
306
c97be6e1bd27
Added framework for Sound_Seek() support.
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diff
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|
876 |
|
223
249186e31431
Sound_Rewind() support code.
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diff
changeset
|
877 return(1); |
|
249186e31431
Sound_Rewind() support code.
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diff
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|
878 } /* Sound_Rewind */ |
|
249186e31431
Sound_Rewind() support code.
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diff
changeset
|
879 |
|
249186e31431
Sound_Rewind() support code.
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219
diff
changeset
|
880 |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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450
diff
changeset
|
881 Sint32 Sound_GetDuration(Sound_Sample *sample) |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
Ryan C. Gordon <icculus@icculus.org>
parents:
450
diff
changeset
|
882 { |
|
553
5ec7f4e5e20b
Fixed compilation on pre-C99 compilers (gcc2, msvc, etc).
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
|
883 Sound_SampleInternal *internal; |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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parents:
450
diff
changeset
|
884 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, -1); |
|
553
5ec7f4e5e20b
Fixed compilation on pre-C99 compilers (gcc2, msvc, etc).
Ryan C. Gordon <icculus@icculus.org>
parents:
552
diff
changeset
|
885 internal = (Sound_SampleInternal *) sample->opaque; |
|
477
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
|
886 return(internal->total_time); |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
Ryan C. Gordon <icculus@icculus.org>
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diff
changeset
|
887 } /* Sound_GetDuration */ |
|
3e705c9180e5
Fixed binary compatibility, added Sound_GetDuration().
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parents:
450
diff
changeset
|
888 |
| 4 | 889 /* end of SDL_sound.c ... */ |
| 890 |