Mercurial > SDL_sound_CoreAudio
annotate SDL_sound.c @ 20:d4ac6ce1360e
Added WAV entries.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Wed, 19 Sep 2001 08:30:14 +0000 |
| parents | cc2c32349380 |
| children | ddc3614c9042 |
| 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 * | |
| 26 * Please see the file LICENSE in the source's root directory. | |
| 27 * | |
| 28 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org) | |
| 29 */ | |
| 30 | |
| 31 | |
| 32 #include <stdio.h> | |
| 33 #include <stdlib.h> | |
| 34 #include <string.h> | |
| 35 #include <assert.h> | |
| 36 #include <ctype.h> | |
| 37 | |
| 38 #include "SDL.h" | |
| 39 #include "SDL_sound.h" | |
| 40 | |
| 41 #define __SDL_SOUND_INTERNAL__ | |
| 42 #include "SDL_sound_internal.h" | |
| 43 | |
| 44 | |
| 45 /* The various decoder drivers... */ | |
| 46 | |
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47 #if (defined SOUND_SUPPORTS_MP3) |
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48 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_MP3; |
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49 #endif |
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50 |
| 20 | 51 #if (defined SOUND_SUPPORTS_WAV) |
| 52 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_WAV; | |
| 53 #endif | |
| 54 | |
| 4 | 55 #if (defined SOUND_SUPPORTS_VOC) |
| 56 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_VOC; | |
| 57 #endif | |
| 58 | |
| 59 #if (defined SOUND_SUPPORTS_RAW) | |
| 60 extern const Sound_DecoderFunctions __Sound_DecoderFunctions_RAW; | |
| 61 #endif | |
| 62 | |
| 63 static const Sound_DecoderFunctions *decoderFuncs[] = | |
| 64 { | |
|
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65 #if (defined SOUND_SUPPORTS_MP3) |
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66 &__Sound_DecoderFunctions_MP3, |
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67 #endif |
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68 |
| 20 | 69 #if (defined SOUND_SUPPORTS_WAV) |
| 70 &__Sound_DecoderFunctions_WAV, | |
| 71 #endif | |
| 72 | |
| 4 | 73 #if (defined SOUND_SUPPORTS_VOC) |
| 74 &__Sound_DecoderFunctions_VOC, | |
| 75 #endif | |
| 76 | |
| 77 #if (defined SOUND_SUPPORTS_RAW) | |
| 78 &__Sound_DecoderFunctions_RAW, | |
| 79 #endif | |
| 80 | |
| 81 NULL | |
| 82 }; | |
| 83 | |
| 84 | |
| 85 | |
| 86 /* General SDL_sound state ... */ | |
| 87 | |
| 88 static int initialized = 0; | |
| 89 static Sound_Sample *samplesList = NULL; /* this is a linked list. */ | |
| 90 static const Sound_DecoderInfo **available_decoders = NULL; | |
| 91 | |
| 92 | |
| 93 /* functions ... */ | |
| 94 | |
| 95 void Sound_GetLinkedVersion(Sound_Version *ver) | |
| 96 { | |
| 97 if (ver != NULL) | |
| 98 { | |
| 99 ver->major = SOUND_VER_MAJOR; | |
| 100 ver->minor = SOUND_VER_MINOR; | |
| 101 ver->patch = SOUND_VER_PATCH; | |
| 102 } /* if */ | |
| 103 } /* Sound_GetLinkedVersion */ | |
| 104 | |
| 105 | |
| 106 int Sound_Init(void) | |
| 107 { | |
| 108 size_t i; | |
| 109 BAIL_IF_MACRO(initialized, ERR_IS_INITIALIZED, 0); | |
| 110 samplesList = NULL; | |
| 111 | |
| 112 SDL_Init(SDL_INIT_AUDIO); | |
| 113 | |
| 114 for (i = 0; decoderFuncs[i] != NULL; i++) | |
| 115 ; /* do nothing. */ | |
| 116 | |
| 117 i++; | |
| 118 available_decoders = (const Sound_DecoderInfo **) | |
| 119 malloc(i * sizeof (Sound_DecoderInfo *)); | |
| 120 BAIL_IF_MACRO(available_decoders == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 121 | |
| 122 for (i = 0; decoderFuncs[i] != NULL; i++) | |
| 123 available_decoders[i] = &decoderFuncs[i]->info; | |
| 124 | |
| 125 initialized = 1; | |
| 126 return(1); | |
| 127 } /* Sound_Init */ | |
| 128 | |
| 129 | |
| 130 int Sound_Quit(void) | |
| 131 { | |
| 132 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 133 | |
| 134 while (((volatile Sound_Sample *) samplesList) != NULL) | |
| 135 Sound_FreeSample(samplesList); | |
| 136 | |
| 137 if (available_decoders != NULL) | |
| 138 free(available_decoders); | |
| 139 available_decoders = NULL; | |
| 140 | |
| 141 initialized = 0; | |
| 142 | |
| 143 return(1); | |
| 144 } /* Sound_Quit */ | |
| 145 | |
| 146 | |
| 147 const Sound_DecoderInfo **Sound_AvailableDecoders(void) | |
| 148 { | |
| 149 return(available_decoders); /* READ. ONLY. */ | |
| 150 } /* Sound_AvailableDecoders */ | |
| 151 | |
| 152 | |
| 153 const char *Sound_GetError(void) | |
| 154 { | |
| 155 return(SDL_GetError()); | |
| 156 } /* Sound_GetError */ | |
| 157 | |
| 158 | |
| 159 void Sound_ClearError(void) | |
| 160 { | |
| 161 SDL_ClearError(); | |
| 162 } /* Sound_ClearError */ | |
| 163 | |
| 164 | |
| 165 /* | |
| 166 * This is declared in the internal header. | |
| 167 */ | |
| 168 void Sound_SetError(const char *err) | |
| 169 { | |
| 170 if (err != NULL) | |
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171 { |
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172 _D(("Sound_SetError(\"%s\");\n", err)); |
| 4 | 173 SDL_SetError(err); |
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174 } /* if */ |
| 4 | 175 } /* Sound_SetError */ |
| 176 | |
| 177 | |
| 178 /* | |
| 179 * -ansi and -pedantic flags prevent use of strcasecmp() on Linux, and | |
| 180 * I honestly don't want to mess around with figuring out if a given | |
| 181 * platform has "strcasecmp", "stricmp", or | |
| 182 * "compare_two_damned_strings_case_insensitive", which I hear is in the | |
| 183 * next release of Carbon. :) This is exported so decoders may use it if | |
| 184 * they like. | |
| 185 */ | |
| 186 int __Sound_strcasecmp(const char *x, const char *y) | |
| 187 { | |
| 188 int ux, uy; | |
| 189 | |
| 190 do | |
| 191 { | |
| 192 ux = toupper((int) *x); | |
| 193 uy = toupper((int) *y); | |
| 194 if (ux > uy) | |
| 195 return(1); | |
| 196 else if (ux < uy) | |
| 197 return(-1); | |
| 198 x++; | |
| 199 y++; | |
| 200 } while ((ux) && (uy)); | |
| 201 | |
| 202 return(0); | |
| 203 } /* __Sound_strcasecmp */ | |
| 204 | |
| 205 | |
| 206 /* | |
| 207 * Allocate a Sound_Sample, and fill in most of its fields. Those that need | |
| 208 * to be filled in later, by a decoder, will be initialized to zero. | |
| 209 */ | |
| 210 static Sound_Sample *alloc_sample(SDL_RWops *rw, Sound_AudioInfo *desired, | |
| 211 Uint32 bufferSize) | |
| 212 { | |
| 213 Sound_Sample *retval = malloc(sizeof (Sound_Sample)); | |
| 214 Sound_SampleInternal *internal = malloc(sizeof (Sound_SampleInternal)); | |
| 215 if ((retval == NULL) || (internal == NULL)) | |
| 216 { | |
| 217 Sound_SetError(ERR_OUT_OF_MEMORY); | |
| 218 if (retval) | |
| 219 free(retval); | |
| 220 if (internal) | |
| 221 free(internal); | |
| 222 | |
| 223 return(NULL); | |
| 224 } /* if */ | |
| 225 | |
| 226 memset(retval, '\0', sizeof (Sound_Sample)); | |
| 227 memset(internal, '\0', sizeof (Sound_SampleInternal)); | |
| 228 | |
| 229 assert(bufferSize > 0); | |
| 230 retval->buffer = malloc(bufferSize); /* pure ugly. */ | |
| 231 if (!retval->buffer) | |
| 232 { | |
| 233 Sound_SetError(ERR_OUT_OF_MEMORY); | |
| 234 free(internal); | |
| 235 free(retval); | |
| 236 return(NULL); | |
| 237 } /* if */ | |
| 238 memset(retval->buffer, '\0', bufferSize); | |
| 239 retval->buffer_size = bufferSize; | |
| 240 | |
| 241 if (desired != NULL) | |
| 242 memcpy(&retval->desired, desired, sizeof (Sound_AudioInfo)); | |
| 243 | |
| 244 internal->rw = rw; | |
| 245 retval->opaque = internal; | |
| 246 return(retval); | |
| 247 } /* alloc_sample */ | |
| 248 | |
| 249 | |
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250 #if (defined DEBUG_CHATTER) |
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251 static __inline__ const char *fmt_to_str(Uint16 fmt) |
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252 { |
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253 switch(fmt) |
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254 { |
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255 case AUDIO_U8: |
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256 return("U8"); |
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257 case AUDIO_S8: |
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258 return("S8"); |
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259 case AUDIO_U16LSB: |
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260 return("U16LSB"); |
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261 case AUDIO_S16LSB: |
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262 return("S16LSB"); |
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263 case AUDIO_U16MSB: |
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264 return("U16MSB"); |
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265 case AUDIO_S16MSB: |
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266 return("S16MSB"); |
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267 } /* switch */ |
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268 |
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269 return("Unknown"); |
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270 } /* fmt_to_str */ |
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271 #endif |
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272 |
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273 |
| 4 | 274 /* |
| 275 * The bulk of the Sound_NewSample() work is done here... | |
| 276 * Ask the specified decoder to handle the data in (rw), and if | |
| 277 * so, construct the Sound_Sample. Otherwise, try to wind (rw)'s stream | |
| 278 * back to where it was, and return false. | |
| 279 * | |
| 280 * !!! FIXME: This is big, ugly, nasty, and smelly. | |
| 281 */ | |
| 282 static int init_sample(const Sound_DecoderFunctions *funcs, | |
| 283 Sound_Sample *sample, const char *ext, | |
| 284 Sound_AudioInfo *_desired) | |
| 285 { | |
| 286 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 287 int pos = SDL_RWtell(internal->rw); /* !!! FIXME: Int? Really? */ | |
| 288 Sound_AudioInfo desired; | |
| 289 | |
| 290 /* fill in the funcs for this decoder... */ | |
| 291 sample->decoder = &funcs->info; | |
| 292 internal->funcs = funcs; | |
| 293 if (!funcs->open(sample, ext)) | |
| 294 { | |
| 295 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 296 return(0); | |
| 297 } /* if */ | |
| 298 | |
| 299 /* success; we've got a decoder! */ | |
| 300 | |
| 301 /* Now we need to set up the conversion buffer... */ | |
| 302 | |
| 303 memcpy(&desired, (_desired != NULL) ? _desired : &sample->actual, | |
| 304 sizeof (Sound_AudioInfo)); | |
| 305 | |
| 306 if (SDL_BuildAudioCVT(&internal->sdlcvt, | |
| 307 sample->actual.format, | |
| 308 sample->actual.channels, | |
| 309 (int) sample->actual.rate, /* !!! FIXME: Int? Really? */ | |
| 310 desired.format, | |
| 311 desired.channels, | |
| 312 (int) desired.rate) == -1) /* !!! FIXME: Int? Really? */ | |
| 313 { | |
| 314 Sound_SetError(SDL_GetError()); | |
| 315 funcs->close(sample); | |
| 316 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 317 return(0); | |
| 318 } /* if */ | |
| 319 | |
| 320 if (internal->sdlcvt.len_mult > 1) | |
| 321 { | |
| 322 void *rc = realloc(sample->buffer, | |
| 323 sample->buffer_size * internal->sdlcvt.len_mult); | |
| 324 if (rc == NULL) | |
| 325 { | |
| 326 funcs->close(sample); | |
| 327 SDL_RWseek(internal->rw, pos, SEEK_SET); /* set for next try... */ | |
| 328 return(0); | |
| 329 } /* if */ | |
| 330 | |
| 331 sample->buffer = rc; | |
| 332 } /* if */ | |
| 333 | |
| 334 /* these pointers are all one and the same. */ | |
| 335 memcpy(&sample->desired, &desired, sizeof (Sound_AudioInfo)); | |
| 336 internal->sdlcvt.buf = internal->buffer = sample->buffer; | |
| 337 internal->buffer_size = sample->buffer_size / internal->sdlcvt.len_mult; | |
| 338 internal->sdlcvt.len = internal->buffer_size; | |
| 339 | |
| 340 /* Prepend our new Sound_Sample to the samplesList... */ | |
| 341 if (samplesList != NULL) | |
| 342 { | |
| 343 internal->next = samplesList; | |
| 344 if (samplesList != NULL) | |
| 345 internal->prev = sample; | |
| 346 } /* if */ | |
| 347 samplesList = sample; | |
| 348 | |
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349 _D(("New sample DESIRED format: %s format, %d rate, %d channels.\n", |
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350 fmt_to_str(sample->desired.format), |
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351 sample->desired.rate, |
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352 sample->desired.channels)); |
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353 |
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354 _D(("New sample ACTUAL format: %s format, %d rate, %d channels.\n", |
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355 fmt_to_str(sample->actual.format), |
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356 sample->actual.rate, |
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357 sample->actual.channels)); |
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358 |
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359 _D(("On-the-fly conversion: %s.\n", |
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360 internal->sdlcvt.needed ? "ENABLED" : "DISABLED")); |
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361 |
| 4 | 362 return(1); |
| 363 } /* init_sample */ | |
| 364 | |
| 365 | |
| 366 Sound_Sample *Sound_NewSample(SDL_RWops *rw, const char *ext, | |
| 367 Sound_AudioInfo *desired, Uint32 bSize) | |
| 368 { | |
| 369 size_t i; | |
| 370 Sound_Sample *retval; | |
| 371 | |
| 372 /* sanity checks. */ | |
| 373 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 374 BAIL_IF_MACRO(rw == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 375 | |
| 376 retval = alloc_sample(rw, desired, bSize); | |
| 377 if (!retval) | |
| 378 return(NULL); /* alloc_sample() sets error message... */ | |
| 379 | |
| 380 if (ext != NULL) | |
| 381 { | |
| 382 for (i = 0; decoderFuncs[i] != NULL; i++) | |
| 383 { | |
| 384 const char *decoderExt = decoderFuncs[i]->info.extension; | |
| 385 if (__Sound_strcasecmp(decoderExt, ext) == 0) | |
| 386 { | |
| 387 if (init_sample(decoderFuncs[i], retval, ext, desired)) | |
| 388 return(retval); | |
| 389 } /* if */ | |
| 390 } /* for */ | |
| 391 } /* if */ | |
| 392 | |
| 393 /* no direct extension match? Try everything we've got... */ | |
| 394 for (i = 0; decoderFuncs[i] != NULL; i++) | |
| 395 { | |
| 396 if (init_sample(decoderFuncs[i], retval, ext, desired)) | |
| 397 return(retval); | |
| 398 } /* for */ | |
| 399 | |
| 400 /* nothing could handle the sound data... */ | |
| 401 free(retval->opaque); | |
| 402 if (retval->buffer != NULL) | |
| 403 free(retval->buffer); | |
| 404 free(retval); | |
| 405 SDL_RWclose(rw); | |
| 406 Sound_SetError(ERR_UNSUPPORTED_FORMAT); | |
| 407 return(NULL); | |
| 408 } /* Sound_NewSample */ | |
| 409 | |
| 410 | |
| 411 Sound_Sample *Sound_NewSampleFromFile(const char *filename, | |
| 412 Sound_AudioInfo *desired, | |
| 413 Uint32 bufferSize) | |
| 414 { | |
| 415 const char *ext; | |
| 416 SDL_RWops *rw; | |
| 417 | |
| 418 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, NULL); | |
| 419 BAIL_IF_MACRO(filename == NULL, ERR_INVALID_ARGUMENT, NULL); | |
| 420 | |
| 421 ext = strrchr(filename, '.'); | |
| 422 rw = SDL_RWFromFile(filename, "rb"); | |
| 423 BAIL_IF_MACRO(rw == NULL, SDL_GetError(), NULL); | |
| 424 | |
| 425 if (ext != NULL) | |
| 426 ext++; | |
| 427 | |
| 428 return(Sound_NewSample(rw, ext, desired, bufferSize)); | |
| 429 } /* Sound_NewSampleFromFile */ | |
| 430 | |
| 431 | |
| 432 void Sound_FreeSample(Sound_Sample *sample) | |
| 433 { | |
| 434 Sound_SampleInternal *internal; | |
| 435 | |
| 436 if (!initialized) | |
| 437 { | |
| 438 Sound_SetError(ERR_NOT_INITIALIZED); | |
| 439 return; | |
| 440 } /* if */ | |
| 441 | |
| 442 if (sample == NULL) | |
| 443 { | |
| 444 Sound_SetError(ERR_INVALID_ARGUMENT); | |
| 445 return; | |
| 446 } /* if */ | |
| 447 | |
| 448 internal = (Sound_SampleInternal *) sample->opaque; | |
| 449 | |
| 450 internal->funcs->close(sample); | |
| 451 | |
| 452 /* update the samplesList... */ | |
| 453 if (internal->prev != NULL) | |
| 454 { | |
| 455 Sound_SampleInternal *prevInternal; | |
| 456 prevInternal = (Sound_SampleInternal *) internal->prev->opaque; | |
| 457 prevInternal->next = internal->next; | |
| 458 } /* if */ | |
| 459 else | |
| 460 { | |
| 461 assert(samplesList == sample); | |
| 462 samplesList = internal->next; | |
| 463 } /* else */ | |
| 464 | |
| 465 if (internal->next != NULL) | |
| 466 { | |
| 467 Sound_SampleInternal *nextInternal; | |
| 468 nextInternal = (Sound_SampleInternal *) internal->next->opaque; | |
| 469 nextInternal->prev = internal->prev; | |
| 470 } /* if */ | |
| 471 | |
| 472 /* nuke it... */ | |
| 473 if (internal->rw != NULL) /* this condition is a "just in case" thing. */ | |
| 474 SDL_RWclose(internal->rw); | |
| 475 assert(internal->buffer != NULL); | |
| 476 if (internal->buffer != sample->buffer) | |
| 477 free(internal->buffer); | |
| 478 free(internal); | |
| 479 if (sample->buffer != NULL) | |
| 480 free(sample->buffer); | |
| 481 free(sample); | |
| 482 } /* Sound_FreeSample */ | |
| 483 | |
| 484 | |
| 485 int Sound_SetBufferSize(Sound_Sample *sample, Uint32 newSize) | |
| 486 { | |
| 487 void *newBuf = NULL; | |
| 488 Sound_SampleInternal *internal = NULL; | |
| 489 | |
| 490 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 491 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 492 internal = ((Sound_SampleInternal *) sample->opaque); | |
| 493 newBuf = realloc(sample->buffer, newSize * internal->sdlcvt.len_mult); | |
| 494 BAIL_IF_MACRO(newBuf == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 495 | |
| 496 internal->sdlcvt.buf = internal->buffer = sample->buffer = newBuf; | |
| 497 sample->buffer_size = newSize; | |
| 498 internal->buffer_size = newSize / internal->sdlcvt.len_mult; | |
| 499 internal->sdlcvt.len = internal->buffer_size; | |
| 500 | |
| 501 return(1); | |
| 502 } /* Sound_SetBufferSize */ | |
| 503 | |
| 504 | |
| 505 Uint32 Sound_Decode(Sound_Sample *sample) | |
| 506 { | |
| 507 Sound_SampleInternal *internal = NULL; | |
| 508 Uint32 retval = 0; | |
| 509 | |
| 510 /* a boatload of sanity checks... */ | |
| 511 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 512 BAIL_IF_MACRO(sample == NULL, ERR_INVALID_ARGUMENT, 0); | |
| 513 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_ERROR, ERR_PREV_ERROR, 0); | |
| 514 BAIL_IF_MACRO(sample->flags & SOUND_SAMPLEFLAG_EOF, ERR_PREV_EOF, 0); | |
| 515 | |
| 516 internal = (Sound_SampleInternal *) sample->opaque; | |
| 517 | |
| 518 assert(sample->buffer != NULL); | |
| 519 assert(sample->buffer_size > 0); | |
| 520 assert(internal->buffer != NULL); | |
| 521 assert(internal->buffer_size > 0); | |
| 522 | |
| 523 /* reset EAGAIN. Decoder can flip it back on if it needs to. */ | |
| 524 sample->flags &= !SOUND_SAMPLEFLAG_EAGAIN; | |
| 525 | |
| 526 retval = internal->funcs->read(sample); | |
| 527 if (internal->sdlcvt.needed) | |
| 528 { | |
| 529 internal->sdlcvt.len = retval; | |
| 530 SDL_ConvertAudio(&internal->sdlcvt); | |
| 531 retval *= internal->sdlcvt.len_mult; | |
| 532 } /* if */ | |
| 533 | |
| 534 return(retval); | |
| 535 } /* Sound_Decode */ | |
| 536 | |
| 537 | |
| 538 Uint32 Sound_DecodeAll(Sound_Sample *sample) | |
| 539 { | |
| 540 Sound_SampleInternal *internal = NULL; | |
| 541 void *buf = NULL; | |
| 542 Uint32 newBufSize = 0; | |
| 543 | |
| 544 BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0); | |
| 545 | |
| 546 internal = (Sound_SampleInternal *) sample->opaque; | |
| 547 | |
| 548 while ( ((sample->flags & SOUND_SAMPLEFLAG_EOF) == 0) && | |
| 549 ((sample->flags & SOUND_SAMPLEFLAG_ERROR) == 0) ) | |
| 550 { | |
| 551 void *ptr = realloc(buf, newBufSize + sample->buffer_size); | |
| 552 if (ptr == NULL) | |
| 553 { | |
| 554 sample->flags |= SOUND_SAMPLEFLAG_ERROR; | |
| 555 Sound_SetError(ERR_OUT_OF_MEMORY); | |
| 556 } /* if */ | |
| 557 else | |
| 558 { | |
| 559 Uint32 br = Sound_Decode(sample); | |
| 560 memcpy( ((char *) buf) + newBufSize, sample->buffer, br ); | |
| 561 newBufSize += br; | |
| 562 } /* else */ | |
| 563 } /* while */ | |
| 564 | |
| 565 free(sample->buffer); | |
| 566 sample->buffer = internal->buffer = internal->sdlcvt.buf = buf; | |
| 567 sample->buffer_size = newBufSize; | |
| 568 internal->buffer_size = newBufSize / internal->sdlcvt.len_mult; | |
| 569 internal->sdlcvt.len_mult = internal->buffer_size; | |
| 570 | |
| 571 return(newBufSize); | |
| 572 } /* Sound_DecodeAll */ | |
| 573 | |
| 574 | |
| 575 /* end of SDL_sound.c ... */ | |
| 576 |