Mercurial > SDL_sound_CoreAudio
annotate decoders/quicktime.c @ 355:5dbf2f9cde00
Added docs stuff.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Fri, 07 Jun 2002 13:26:13 +0000 |
| parents | 069ce624d6cf |
| children | cbb15ecf423a |
| rev | line source |
|---|---|
| 318 | 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 * QuickTime decoder for sound formats that QuickTime supports. | |
| 22 * April 28, 2002 | |
| 23 * | |
| 24 * This driver handles .mov files with a sound track. In | |
| 25 * theory, it could handle any format that QuickTime supports. | |
| 26 * In practice, it may only handle a select few of these formats. | |
| 27 * | |
| 28 * It seems able to play back AIFF and other standard Mac formats. | |
| 29 * Rewinding is not supported yet. | |
| 30 * | |
| 31 * The routine QT_create_data_ref() needs to be | |
| 32 * tweaked to support different media types. | |
| 33 * This code was originally written to get MP3 support, | |
| 34 * as it turns out, this isn't possible using this method. | |
| 35 * | |
| 36 * The only way to get streaming MP3 support through QuickTime, | |
| 37 * and hence support for SDL_RWops, is to write | |
| 38 * a DataHandler component, which suddenly gets much more difficult :-( | |
| 39 * | |
| 40 * This file was written by Darrell Walisser (walisser@mac.com) | |
| 41 * Portions have been borrowed from the "MP3Player" sample code, | |
| 42 * courtesy of Apple. | |
| 43 */ | |
| 44 | |
| 45 #if HAVE_CONFIG_H | |
| 46 # include <config.h> | |
| 47 #endif | |
| 48 | |
| 49 #ifdef SOUND_SUPPORTS_QUICKTIME | |
| 50 #ifdef macintosh | |
| 51 typedef long int32_t; | |
| 52 # define OPAQUE_UPP_TYPES 0 | |
| 53 # include <QuickTime.h> | |
| 54 #else | |
| 55 # include <QuickTime/QuickTime.h> | |
| 56 # include <Carbon/Carbon.h> | |
| 57 #endif | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include <stdlib.h> | |
| 61 #include <stdint.h> | |
| 62 #include <string.h> | |
| 63 #include <assert.h> | |
| 64 | |
| 65 #include "SDL_sound.h" | |
| 66 | |
| 67 #define __SDL_SOUND_INTERNAL__ | |
| 68 #include "SDL_sound_internal.h" | |
| 69 | |
| 70 static int QT_init(void); | |
| 71 static void QT_quit(void); | |
| 72 static int QT_open(Sound_Sample *sample, const char *ext); | |
| 73 static void QT_close(Sound_Sample *sample); | |
| 74 static Uint32 QT_read(Sound_Sample *sample); | |
| 75 static int QT_rewind(Sound_Sample *sample); | |
|
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76 static int QT_seek(Sound_Sample *sample, Uint32 ms); |
| 318 | 77 |
| 78 #define QT_MAX_INPUT_BUFFER (32*1024) /* Maximum size of internal buffer (internal->buffer_size) */ | |
| 79 | |
| 80 static const char *extensions_quicktime[] = { "mov", NULL }; | |
| 81 const Sound_DecoderFunctions __Sound_DecoderFunctions_QuickTime = | |
| 82 { | |
| 83 { | |
| 84 extensions_quicktime, | |
| 85 "QuickTime format", | |
| 86 "Darrell Walisser <dwaliss1@purdue.edu>", | |
| 87 "http://www.icculus.org/SDL_sound/" | |
| 88 }, | |
| 89 | |
|
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90 QT_init, /* init() method */ |
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91 QT_quit, /* quit() method */ |
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92 QT_open, /* open() method */ |
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93 QT_close, /* close() method */ |
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94 QT_read, /* read() method */ |
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parents:
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95 QT_rewind, /* rewind() method */ |
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96 QT_seek /* seek() method */ |
| 318 | 97 }; |
| 98 | |
| 99 typedef struct { | |
| 100 | |
| 101 ExtendedSoundComponentData compData; | |
| 102 Handle hSource; /* source media buffer */ | |
| 103 Media sourceMedia; /* sound media identifier */ | |
| 104 TimeValue getMediaAtThisTime; | |
| 105 TimeValue sourceDuration; | |
| 106 Boolean isThereMoreSource; | |
| 107 UInt32 maxBufferSize; | |
| 108 | |
| 109 } SCFillBufferData, *SCFillBufferDataPtr; | |
| 110 | |
| 111 typedef struct { | |
| 112 | |
| 113 Movie movie; | |
| 114 Track track; | |
| 115 Media media; | |
| 116 AudioFormatAtomPtr atom; | |
| 117 SoundComponentData source_format; | |
| 118 SoundComponentData dest_format; | |
| 119 SoundConverter converter; | |
| 120 SCFillBufferData buffer_data; | |
| 121 SoundConverterFillBufferDataUPP fill_buffer_proc; | |
| 122 | |
| 123 } qt_t; | |
| 124 | |
| 125 | |
| 126 | |
| 127 | |
| 128 /* | |
| 129 * This procedure creates a description of the raw data | |
| 130 * read from SDL_RWops so that QuickTime can identify | |
| 131 * the codec it needs to use to decompress it. | |
| 132 */ | |
| 133 static Handle QT_create_data_ref (const char *file_extension) { | |
| 134 | |
| 135 Handle tmp_handle, data_ref; | |
| 136 StringPtr file_name = "\p"; /* empty since we don't know the file name! */ | |
| 137 OSType file_type; | |
| 138 StringPtr mime_type; | |
| 139 long atoms[3]; | |
| 140 | |
| 141 /* | |
| 142 if (__Sound_strcasecmp (file_extension, "mp3")==0) { | |
| 143 file_type = 'MPEG'; | |
| 144 mime_type = "\pvideo/mpeg"; | |
| 145 } | |
| 146 else { | |
| 147 | |
| 148 return NULL; | |
| 149 } | |
| 150 */ | |
| 151 | |
| 152 if (__Sound_strcasecmp (file_extension, "mov") == 0) { | |
| 153 | |
| 154 file_type = 'MooV'; | |
| 155 mime_type = "\pvideo/quicktime"; | |
| 156 } | |
| 157 else { | |
| 158 | |
| 159 return NULL; | |
| 160 } | |
| 161 | |
| 162 tmp_handle = NewHandle(0); | |
| 163 assert (tmp_handle != NULL); | |
| 164 assert (noErr == PtrToHand (&tmp_handle, &data_ref, sizeof(Handle))); | |
| 165 assert (noErr == PtrAndHand (file_name, data_ref, file_name[0]+1)); | |
| 166 | |
| 167 atoms[0] = EndianU32_NtoB (sizeof(long) * 3); | |
| 168 atoms[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType); | |
| 169 atoms[2] = EndianU32_NtoB (file_type); | |
| 170 | |
| 171 assert (noErr == PtrAndHand (atoms, data_ref, sizeof(long)*3)); | |
| 172 | |
| 173 atoms[0] = EndianU32_NtoB (sizeof(long)*2 + mime_type[0]+1); | |
| 174 atoms[1] = EndianU32_NtoB (kDataRefExtensionMIMEType); | |
| 175 | |
| 176 assert (noErr == PtrAndHand (atoms, data_ref, sizeof(long)*2)); | |
| 177 assert (noErr == PtrAndHand (mime_type, data_ref, mime_type[0]+1)); | |
| 178 | |
| 179 return data_ref; | |
| 180 } | |
| 181 | |
| 182 /* | |
| 183 * This procedure is a hook for QuickTime to grab data from the | |
| 184 * SDL_RWOps data structure when it needs it | |
| 185 */ | |
| 186 static pascal OSErr QT_get_movie_data_proc (long offset, long size, | |
| 187 void *data, void *user_data) | |
| 188 { | |
| 189 SDL_RWops* rw = (SDL_RWops*)user_data; | |
| 190 OSErr error; | |
| 191 | |
| 192 if (offset == SDL_RWseek (rw, offset, SEEK_SET)) { | |
| 193 | |
| 194 if (size == SDL_RWread (rw, data, 1, size)) { | |
| 195 error = noErr; | |
| 196 } | |
| 197 else { | |
| 198 error = notEnoughDataErr; | |
| 199 } | |
| 200 } | |
| 201 else { | |
| 202 error = fileOffsetTooBigErr; | |
| 203 } | |
| 204 | |
| 205 return (error); | |
| 206 } | |
| 207 | |
| 208 /* * ---------------------------- | |
| 209 * SoundConverterFillBufferDataProc | |
| 210 * | |
| 211 * the callback routine that provides the source data for conversion - | |
| 212 * it provides data by setting outData to a pointer to a properly | |
| 213 * filled out ExtendedSoundComponentData structure | |
| 214 */ | |
| 215 static pascal Boolean QT_sound_converter_fill_buffer_data_proc (SoundComponentDataPtr *outData, void *inRefCon) | |
| 216 { | |
| 217 SCFillBufferDataPtr pFillData = (SCFillBufferDataPtr)inRefCon; | |
| 218 | |
| 219 OSErr err = noErr; | |
| 220 | |
| 221 /* if after getting the last chunk of data the total time is over | |
| 222 * the duration, we're done | |
| 223 */ | |
| 224 if (pFillData->getMediaAtThisTime >= pFillData->sourceDuration) { | |
| 225 pFillData->isThereMoreSource = false; | |
| 226 pFillData->compData.desc.buffer = NULL; | |
| 227 pFillData->compData.desc.sampleCount = 0; | |
| 228 pFillData->compData.bufferSize = 0; | |
| 229 } | |
| 230 | |
| 231 if (pFillData->isThereMoreSource) { | |
| 232 | |
| 233 long sourceBytesReturned; | |
| 234 long numberOfSamples; | |
| 235 TimeValue sourceReturnedTime, durationPerSample; | |
| 236 | |
| 237 HUnlock(pFillData->hSource); | |
| 238 | |
| 239 err = GetMediaSample | |
| 240 (pFillData->sourceMedia,/* specifies the media for this operation */ | |
| 241 pFillData->hSource, /* function returns the sample data into this handle */ | |
| 242 pFillData->maxBufferSize, /* maximum number of bytes of sample data to be returned */ | |
| 243 &sourceBytesReturned, /* the number of bytes of sample data returned */ | |
| 244 pFillData->getMediaAtThisTime,/* starting time of the sample to | |
| 245 be retrieved (must be in | |
| 246 Media's TimeScale) */ | |
| 247 &sourceReturnedTime,/* indicates the actual time of the returned sample data */ | |
| 248 &durationPerSample, /* duration of each sample in the media */ | |
| 249 NULL, /* sample description corresponding to the returned sample data (NULL to ignore) */ | |
| 250 NULL, /* index value to the sample description that corresponds | |
| 251 to the returned sample data (NULL to ignore) */ | |
| 252 0, /* maximum number of samples to be returned (0 to use a | |
| 253 value that is appropriate for the media) */ | |
| 254 &numberOfSamples, /* number of samples it actually returned */ | |
| 255 NULL); /* flags that describe the sample (NULL to ignore) */ | |
| 256 | |
| 257 HLock(pFillData->hSource); | |
| 258 | |
| 259 if ((noErr != err) || (sourceBytesReturned == 0)) { | |
| 260 pFillData->isThereMoreSource = false; | |
| 261 pFillData->compData.desc.buffer = NULL; | |
| 262 pFillData->compData.desc.sampleCount = 0; | |
| 263 | |
| 264 if ((err != noErr) && (sourceBytesReturned > 0)) | |
| 265 DebugStr("\pGetMediaSample - Failed in FillBufferDataProc"); | |
| 266 } | |
| 267 | |
| 268 pFillData->getMediaAtThisTime = sourceReturnedTime + (durationPerSample * numberOfSamples); | |
| 269 pFillData->compData.bufferSize = sourceBytesReturned; | |
| 270 } | |
| 271 | |
| 272 /* set outData to a properly filled out ExtendedSoundComponentData struct */ | |
| 273 *outData = (SoundComponentDataPtr)&pFillData->compData; | |
| 274 | |
| 275 return (pFillData->isThereMoreSource); | |
| 276 } | |
| 277 | |
| 278 | |
| 279 static int QT_init_internal () { | |
| 280 | |
| 281 OSErr error; | |
| 282 | |
| 283 error = EnterMovies(); /* initialize the movie toolbox */ | |
| 284 | |
| 285 return (error == noErr); | |
| 286 } | |
| 287 | |
| 288 static void QT_quit_internal () { | |
| 289 | |
| 290 ExitMovies(); | |
| 291 } | |
| 292 | |
| 293 static qt_t* QT_open_internal (Sound_Sample *sample, const char *extension) | |
| 294 { | |
| 295 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 296 | |
| 297 qt_t *instance; | |
| 298 OSErr error; | |
| 299 Movie movie; | |
| 300 Track sound_track; | |
| 301 Media sound_track_media; | |
| 302 AudioFormatAtomPtr source_sound_decomp_atom; | |
| 303 | |
| 304 SoundDescriptionV1Handle source_sound_description; | |
| 305 Handle source_sound_description_extension; | |
| 306 Size source_sound_description_extension_size; | |
| 307 Handle data_ref; | |
| 308 | |
| 309 data_ref = QT_create_data_ref (extension); | |
| 310 | |
| 311 /* create a movie that will read data using SDL_RWops */ | |
| 312 error = NewMovieFromUserProc | |
| 313 (&movie, | |
| 314 0, | |
| 315 NULL, | |
| 316 NewGetMovieUPP(QT_get_movie_data_proc), | |
| 317 (void*) internal->rw, | |
| 318 data_ref, | |
| 319 'hndl'); | |
| 320 | |
| 321 if (error != noErr) { | |
| 322 | |
| 323 return NULL; | |
| 324 } | |
| 325 | |
| 326 /* get the first sound track of the movie; other tracks will be ignored */ | |
| 327 sound_track = GetMovieIndTrackType (movie, 1, SoundMediaType, movieTrackMediaType); | |
| 328 if (sound_track == NULL) { | |
| 329 | |
| 330 /* movie needs a sound track! */ | |
| 331 | |
| 332 return NULL; | |
| 333 } | |
| 334 | |
| 335 /* get and return the sound track media */ | |
| 336 sound_track_media = GetTrackMedia (sound_track); | |
| 337 if (sound_track_media == NULL) { | |
| 338 | |
| 339 return NULL; | |
| 340 } | |
| 341 | |
| 342 /* create a description of the source sound so we can convert it later */ | |
| 343 source_sound_description = (SoundDescriptionV1Handle)NewHandle(0); | |
| 344 assert (source_sound_description != NULL); /* out of memory */ | |
| 345 | |
| 346 GetMediaSampleDescription (sound_track_media, 1, | |
| 347 (SampleDescriptionHandle)source_sound_description); | |
| 348 error = GetMoviesError(); | |
| 349 if (error != noErr) { | |
| 350 | |
| 351 return NULL; | |
| 352 } | |
| 353 | |
| 354 source_sound_description_extension = NewHandle(0); | |
| 355 assert (source_sound_description_extension != NULL); /* out of memory */ | |
| 356 | |
| 357 error = GetSoundDescriptionExtension ((SoundDescriptionHandle) source_sound_description, | |
| 358 &source_sound_description_extension, | |
| 359 siDecompressionParams); | |
| 360 | |
| 361 if (error == noErr) { | |
| 362 | |
| 363 /* copy extension to atom format description if we have an extension */ | |
| 364 | |
| 365 source_sound_description_extension_size = | |
| 366 GetHandleSize (source_sound_description_extension); | |
| 367 HLock (source_sound_description_extension); | |
| 368 | |
| 369 source_sound_decomp_atom = (AudioFormatAtom*) | |
| 370 NewPtr (source_sound_description_extension_size); | |
| 371 assert (source_sound_decomp_atom != NULL); /* out of memory */ | |
| 372 | |
| 373 BlockMoveData (*source_sound_description_extension, | |
| 374 source_sound_decomp_atom, | |
| 375 source_sound_description_extension_size); | |
| 376 | |
| 377 HUnlock (source_sound_description_extension); | |
| 378 } | |
| 379 | |
| 380 else { | |
| 381 | |
| 382 source_sound_decomp_atom = NULL; | |
| 383 } | |
| 384 | |
| 385 instance = (qt_t*) malloc (sizeof(*instance)); | |
| 386 assert (instance != NULL); /* out of memory */ | |
| 387 | |
| 388 instance->movie = movie; | |
| 389 instance->track = sound_track; | |
| 390 instance->media = sound_track_media; | |
| 391 instance->atom = source_sound_decomp_atom; | |
| 392 | |
| 393 instance->source_format.flags = 0; | |
| 394 instance->source_format.format = (*source_sound_description)->desc.dataFormat; | |
| 395 instance->source_format.numChannels = (*source_sound_description)->desc.numChannels; | |
| 396 instance->source_format.sampleSize = (*source_sound_description)->desc.sampleSize; | |
| 397 instance->source_format.sampleRate = (*source_sound_description)->desc.sampleRate; | |
| 398 instance->source_format.sampleCount = 0; | |
| 399 instance->source_format.buffer = NULL; | |
| 400 instance->source_format.reserved = 0; | |
| 401 | |
| 402 instance->dest_format.flags = 0; | |
| 403 instance->dest_format.format = kSoundNotCompressed; | |
| 404 instance->dest_format.numChannels = (*source_sound_description)->desc.numChannels; | |
| 405 instance->dest_format.sampleSize = (*source_sound_description)->desc.sampleSize; | |
| 406 instance->dest_format.sampleRate = (*source_sound_description)->desc.sampleRate; | |
| 407 instance->dest_format.sampleCount = 0; | |
| 408 instance->dest_format.buffer = NULL; | |
| 409 instance->dest_format.reserved = 0; | |
| 410 | |
| 411 sample->actual.channels = (*source_sound_description)->desc.numChannels; | |
| 412 sample->actual.rate = (*source_sound_description)->desc.sampleRate >> 16; | |
| 413 | |
| 414 if ((*source_sound_description)->desc.sampleSize == 16) { | |
| 415 | |
| 416 sample->actual.format = AUDIO_S16SYS; | |
| 417 } | |
| 418 else if ((*source_sound_description)->desc.sampleSize == 8) { | |
| 419 | |
| 420 sample->actual.format = AUDIO_U8; | |
| 421 } | |
| 422 else { | |
| 423 | |
| 424 /* 24-bit or others... (which SDL can't handle) */ | |
| 425 return NULL; | |
| 426 } | |
| 427 | |
| 428 DisposeHandle (source_sound_description_extension); | |
| 429 DisposeHandle ((Handle)source_sound_description); | |
| 430 | |
| 431 /* This next code sets up the SoundConverter component */ | |
| 432 error = SoundConverterOpen (&instance->source_format, &instance->dest_format, | |
| 433 &instance->converter); | |
| 434 | |
| 435 if (error != noErr) { | |
| 436 | |
| 437 return NULL; | |
| 438 } | |
| 439 | |
| 440 error = SoundConverterSetInfo (instance->converter, siDecompressionParams, | |
| 441 instance->atom); | |
| 442 if (error == siUnknownInfoType) { | |
| 443 | |
| 444 /* ignore */ | |
| 445 } | |
| 446 else if (error != noErr) { | |
| 447 | |
| 448 /* reall error */ | |
| 449 return NULL; | |
| 450 } | |
| 451 | |
| 452 error = SoundConverterBeginConversion (instance->converter); | |
| 453 if (error != noErr) { | |
| 454 | |
| 455 return NULL; | |
| 456 } | |
| 457 | |
| 458 instance->buffer_data.sourceMedia = instance->media; | |
| 459 instance->buffer_data.getMediaAtThisTime = 0; | |
| 460 instance->buffer_data.sourceDuration = GetMediaDuration(instance->media); | |
| 461 instance->buffer_data.isThereMoreSource = true; | |
| 462 instance->buffer_data.maxBufferSize = QT_MAX_INPUT_BUFFER; | |
| 463 /* allocate source media buffer */ | |
| 464 instance->buffer_data.hSource = NewHandle((long)instance->buffer_data.maxBufferSize); | |
| 465 assert (instance->buffer_data.hSource != NULL); /* out of memory */ | |
| 466 | |
| 467 instance->buffer_data.compData.desc = instance->source_format; | |
| 468 instance->buffer_data.compData.desc.buffer = (Byte *)*instance->buffer_data.hSource; | |
| 469 instance->buffer_data.compData.desc.flags = kExtendedSoundData; | |
| 470 instance->buffer_data.compData.recordSize = sizeof(ExtendedSoundComponentData); | |
| 471 instance->buffer_data.compData.extendedFlags = | |
| 472 kExtendedSoundSampleCountNotValid | kExtendedSoundBufferSizeValid; | |
| 473 instance->buffer_data.compData.bufferSize = 0; | |
| 474 | |
| 475 instance->fill_buffer_proc = | |
| 476 NewSoundConverterFillBufferDataUPP (QT_sound_converter_fill_buffer_data_proc); | |
| 477 | |
| 478 return (instance); | |
| 479 | |
| 480 } /* QT_open_internal */ | |
| 481 | |
| 482 static void QT_close_internal (qt_t *instance) | |
| 483 { | |
| 484 | |
| 485 } /* QT_close_internal */ | |
| 486 | |
| 487 static Uint32 QT_read_internal(Sound_Sample *sample) | |
| 488 { | |
| 489 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 490 qt_t *instance = (qt_t*) internal->decoder_private; | |
| 491 long output_bytes, output_frames, output_flags; | |
| 492 OSErr error; | |
| 493 | |
| 494 error = SoundConverterFillBuffer | |
| 495 (instance->converter, /* a sound converter */ | |
| 496 instance->fill_buffer_proc, /* the callback UPP */ | |
| 497 &instance->buffer_data, /* refCon passed to FillDataProc */ | |
| 498 internal->buffer, /* the decompressed data 'play' buffer */ | |
| 499 internal->buffer_size, /* size of the 'play' buffer */ | |
| 500 &output_bytes, /* number of output bytes */ | |
| 501 &output_frames, /* number of output frames */ | |
| 502 &output_flags); /* fillbuffer retured advisor flags */ | |
| 503 | |
| 504 if (output_flags & kSoundConverterHasLeftOverData) { | |
| 505 | |
| 506 sample->flags |= SOUND_SAMPLEFLAG_EAGAIN; | |
| 507 } | |
| 508 else { | |
| 509 | |
| 510 sample->flags |= SOUND_SAMPLEFLAG_EOF; | |
| 511 } | |
| 512 | |
| 513 if (error != noErr) { | |
| 514 | |
| 515 sample->flags |= SOUND_SAMPLEFLAG_ERROR; | |
| 516 } | |
| 517 | |
| 518 return (output_bytes); | |
| 519 | |
| 520 } /* QT_read_internal */ | |
| 521 | |
| 522 static int QT_rewind_internal (Sound_Sample *sample) | |
| 523 { | |
| 524 | |
| 525 return 0; | |
| 526 | |
| 527 } /* QT_rewind_internal */ | |
| 528 | |
| 529 | |
| 530 | |
| 531 static int QT_init(void) | |
| 532 { | |
| 533 return (QT_init_internal()); | |
| 534 | |
| 535 } /* QT_init */ | |
| 536 | |
| 537 static void QT_quit(void) | |
| 538 { | |
| 539 QT_quit_internal(); | |
| 540 | |
| 541 } /* QT_quit */ | |
| 542 | |
| 543 static int QT_open(Sound_Sample *sample, const char *ext) | |
| 544 { | |
| 545 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 546 qt_t *instance; | |
| 547 | |
| 548 instance = QT_open_internal(sample, ext); | |
| 549 internal->decoder_private = (void*)instance; | |
| 550 | |
| 551 return(instance != NULL); | |
| 552 | |
| 553 } /* QT_open */ | |
| 554 | |
| 555 | |
| 556 static void QT_close(Sound_Sample *sample) | |
| 557 { | |
| 558 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 559 qt_t *instance = (qt_t *) internal->decoder_private; | |
| 560 | |
| 561 QT_close_internal (instance); | |
| 562 | |
| 563 free (instance); | |
| 564 | |
| 565 } /* QT_close */ | |
| 566 | |
| 567 | |
| 568 static Uint32 QT_read(Sound_Sample *sample) | |
| 569 { | |
| 570 return(QT_read_internal(sample)); | |
| 571 | |
| 572 } /* QT_read */ | |
| 573 | |
| 574 | |
| 575 static int QT_rewind(Sound_Sample *sample) | |
| 576 { | |
| 577 | |
| 578 return(QT_rewind_internal(sample)); | |
| 579 | |
| 580 } /* QT_rewind */ | |
| 581 | |
|
328
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582 |
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583 static int QT_seek(Sound_Sample *sample, Uint32 ms) |
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584 { |
| 351 | 585 BAIL_MACRO("QUICKTIME: Seeking not implemented", 0); |
|
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586 } /* QT_seek */ |
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587 |
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588 |
| 318 | 589 #endif /* SOUND_SUPPORTS_QUICKTIME */ |
| 590 | |
| 591 /* end of quicktime.c ... */ | |
| 592 |