SMACsdec.cpp

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1	/* Copyright: © Copyright 2004 Apple Computer, Inc. All rights reserved.
2
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37	*/
38	/*=============================================================================
39	SMACsdec.cpp
40
41	=============================================================================*/
42
43	#if USE_DIRECT_DRMZ
44	// this works because all our sound component calls are to our source
45	#define SoundComponentSetSource drmzDecomp_SetSource
46	#define SoundComponentSetOutput drmzDecomp_SetOutput
47	#define SoundComponentGetInfo drmzDecomp_GetInfo
48	#define SoundComponentSetInfo drmzDecomp_SetInfo
49	#define SoundComponentPlaySourceBuffer drmzDecomp_PlaySourceBuffer
50	#define SoundComponentStopSource drmzDecomp_StopSource
51	#define SoundComponentGetSourceData drmzDecomp_GetSourceData
52	#endif
53
54	#if USE_DIRECT_ADEC
55	// remap calls to AudioCodec interface thru our protected class interface
56	#define AudioCodecVersion DirectAudioCodecVersion
57	#define AudioCodecGetPropertyInfo DirectAudioCodecGetPropertyInfo
58	#define AudioCodecGetProperty DirectAudioCodecGetProperty
59	#define AudioCodecSetProperty DirectAudioCodecSetProperty
60	#define AudioCodecInitialize DirectAudioCodecInitialize
61	#define AudioCodecUninitialize DirectAudioCodecUninitialize
62	#define AudioCodecAppendInputData DirectAudioCodecAppendInputData
63	#define AudioCodecProduceOutputPackets DirectAudioCodecProduceOutputPackets
64	#define AudioCodecReset DirectAudioCodecReset
65	#endif
66
67	//=============================================================================
68	// Includes
69	//=============================================================================
70	#include <CAConditionalMacros.h>
71
72	#if !TARGET_API_MAC_OSX \|\| USE_QTML_HEADERS
73	#include <SndEnv.h>
74	#else
75	#include <CoreServices/CoreServices.h>
76	#endif
77
78	#include <string.h>
79
80	#include "SMACsdec.h"
81	#include "CADebugMacros.h"
82	#include "CAException.h"
83	#include "SMACSCDUtility.h"
84
85	#if defined( __GNUC__ )
86	#if( __GNUC__ < 3 )
87	#define IS_COMPILER_WORKING 0
88	#else
89	#define IS_COMPILER_WORKING 1
90	#endif
91	#else
92	#define IS_COMPILER_WORKING 1
93	#endif
94
95	#if TARGET_MAC_OS && IS_COMPILER_WORKING
96	#include "PCMBlitterLibDispatch.h"
97	#endif
98
99	// from transform.h
100	#define CAST( type, expression) ( (type)(expression) )
101	#define ROUND(e) CAST(short, e);
102	#define ROUND_TO_DESK(Src, Dest) \
103	{ \
104	if(Src>32767) \
105	Dest = 32767; \
106	else if (Src < -32768) \
107	Dest = -32768; \
108	else \
109	Dest = ROUND(Src); \
110	}
111
112
113	//=============================================================================
114	// SMACsdec
115	//=============================================================================
116
117	SMACsdec::SMACsdec(ComponentInstance inSelf)
118	:
119	mSelf(inSelf),
120	mSourceComponent(NULL),
121	mDecoder(NULL),
122	mSourceID(0),
123	mSourceData(NULL),
124	mPacketFrameSize(0),
125	mFloatBuffer(NULL),
126	mOutputBuffer(NULL)
127	#if CaptureDataToFile
128	,mOutputFileRefNum(-1)
129	#endif
130	{
131	memset(&mOutputData, 0, sizeof(SoundComponentData));
132	mOutputData.format = k16BitNativeEndianFormat;
133	mOutputData.sampleSize = 16;
134
135	#if TARGET_API_MAC_OSX && TARGET_CPU_PPC
136	mHasAltiVec = SMACSCDUtility::HasAltiVec();
137	#else
138	mHasAltiVec = false;
139	#endif
140
141	#if TARGET_API_MAC_OSX
142	mThreadStateMutex = new CAMutex("SMACsdec::mThreadStateMutex");
143	#endif
144
145	#if CaptureDataToFile
146	FSRef theFSRef;
147	FSRef theParentRef;
148	UniChar theFileName[] = { 'o', 'u', 't', 'p', 'u', 't', '.', 's', 'd', '2' };
149	OSStatus theError = FSPathMakeRef((const UInt8*)"/Volumes/Annex/Users/moorf/output.sd2", &theFSRef, NULL);
150	if(theError != fnfErr)
151	{
152	FSDeleteObject(&theFSRef);
153	}
154	theError = FSPathMakeRef((const UInt8*)"/Volumes/Annex/Users/moorf", &theParentRef, NULL);
155	theError = FSCreateFileUnicode(&theParentRef, 10, theFileName, kFSCatInfoNone, NULL, &theFSRef, NULL);
156	theError = FSOpenFork(&theFSRef, 0, NULL, fsRdWrPerm, &mOutputFileRefNum);
157	if(theError != 0)
158	{
159	mOutputFileRefNum = -1;
160	}
161	#endif
162	}
163
164	SMACsdec::~SMACsdec()
165	{
166	if(mDecoder != NULL)
167	{
168	#if USE_DIRECT_ADEC
169	DirectAudioCodecClose(mDecoder);
170	#else
171	CloseComponent(mDecoder);
172	#endif
173	}
174
175	delete[] mOutputBuffer;
176	delete[] mFloatBuffer;
177
178	#if TARGET_API_MAC_OSX
179	delete mThreadStateMutex;
180	mThreadStateMutex = NULL;
181	#endif
182
183	#if CaptureDataToFile
184	if(mOutputFileRefNum != -1)
185	{
186	FSCloseFork(mOutputFileRefNum);
187	}
188	#endif
189	}
190
191	void SMACsdec::SetSource(SoundSource inSourceID, ComponentInstance inSourceComponent)
192	{
193	mSourceID = inSourceID;
194	mSourceComponent = inSourceComponent;
195	mSourceData = NULL;
196
197	SoundComponentData* theSourceData;
198	ComponentResult theError = SoundComponentSetOutput(mSourceComponent, &mOutputData, &theSourceData);
199	ThrowIfError(theError, (CAException)theError, "SMACsdec::SetSource: got an error from SoundComponentSetOutput");
200	}
201
202	void SMACsdec::SetOutput(SoundComponentData* inRequested, SoundComponentData** outActual)
203	{
204	if((inRequested->format == mOutputData.format) && (inRequested->sampleSize == mOutputData.sampleSize))
205	{
206	mOutputData = *inRequested;
207	}
208	else
209	{
210	*outActual = &mOutputData;
211	throw static_cast<ComponentResult>(paramErr);
212	}
213	}
214
215	void SMACsdec::PlaySourceBuffer(SoundSource inSourceID, SoundParamBlock* inPB, SInt32 inActions)
216	{
217	// get rid of the input data
218	mSourceData = NULL;
219	mOutputData.sampleCount = 0;
220
221	ComponentResult theError = SoundComponentPlaySourceBuffer(mSourceComponent, inSourceID, inPB, inActions);
222	ThrowIfError(theError, (CAException)theError, "SMACsdec::PlaySourceBuffer: got an error from SoundComponentPlaySourceBuffer");
223	}
224
225	void SMACsdec::StopSource(SInt16 inNumberSources, SoundSource* inSources)
226	{
227	// get rid of the input data
228	mSourceData = NULL;
229	mOutputData.sampleCount = 0;
230
231	// reset the decoder
232	if(mDecoder != NULL)
233	{
234	AudioCodecReset(mDecoder);
235	}
236
237	ComponentResult theError = SoundComponentStopSource(mSourceComponent, inNumberSources, inSources);
238	ThrowIfError(theError, (CAException)theError, "SMACsdec::StopSource: got an error from SoundComponentStopSource");
239	}
240
241	void SMACsdec::GetInfo(SoundSource inSourceID, OSType inSelector, void* outData)
242	{
243	switch(inSelector)
244	{
245	case siCompressionFactor:
246	GetCompressionInfo(static_cast<CompressionInfo>(outData));
247	break;
248
249	case siDecompressionParams:
250	GetDecompressionParams(outData);
251	break;
252
253	default:
254	ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACsdec::GetInfo: no source to pass request to")
255	ComponentResult theError = SoundComponentGetInfo(mSourceComponent, inSourceID, inSelector, outData);
256	ThrowIfError(theError, (CAException)theError, "SMACsdec::GetInfo: got an error from SoundComponentGetInfo");
257	break;
258	};
259	}
260
261	void SMACsdec::SetInfo(SoundSource inSourceID, OSType inSelector, void* inData)
262	{
263	switch(inSelector)
264	{
265	case siDecompressionParams:
266	{
267	#if TARGET_API_MAC_OSX
268	// Lock the thread if we can as we are going to completely replace the decoder
269	bool threadLocked;
270
271	threadLocked = mThreadStateMutex->Lock();
272	#endif
273
274	// process the the new params and produce an initialized
275	// AudioCodec instance
276	ComponentInstance theDecoder = SetDecompressionParams(inData);
277	ThrowIf(theDecoder == NULL, badFormat, "SMACsdec::SetInfo: siDecompressionParams didn't generate a decoder");
278
279	// get rid of the input data
280	mSourceData = NULL;
281	mOutputData.sampleCount = 0;
282
283	// close the old decoder if necessary
284	if((mDecoder != NULL) && (theDecoder != mDecoder))
285	{
286	#if USE_DIRECT_ADEC
287	DirectAudioCodecClose(mDecoder);
288	#else
289	CloseComponent(mDecoder);
290	#endif
291	}
292
293	// use the new one
294	mDecoder = theDecoder;
295
296	// get the number of frames in 1 packet of data
297	UInt32 theSize = sizeof(UInt32);
298	ComponentResult theError = AudioCodecGetProperty(mDecoder, kAudioCodecPropertyPacketFrameSize, &theSize, &mPacketFrameSize);
299	ThrowIfError(theError, (CAException)theError, "SMACsdec::SetInfo: siDecompressionParams got an error from AudioCodecGetProperty");
300
301	// toss the old output buffer
302	delete[] mOutputBuffer;
303	delete[] mFloatBuffer;
304
305	// allocate enough space for 1 packet of data, since that's
306	// that's all this component will produce per call to GetSourceData
307	// note that this is going to be 16 bit integer
308	mOutputBuffer = new Byte[mPacketFrameSize * 2 * mOutputData.numChannels];
309	mFloatBuffer = new float[mPacketFrameSize * mOutputData.numChannels];
310
311	#if TARGET_API_MAC_OSX
312	// If we need to, unlock the thread
313	if(threadLocked)
314	{
315	mThreadStateMutex->Unlock();
316	}
317	#endif
318	}
319	break;
320
321	default:
322	ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACsdec::SetInfo: no source to pass request to")
323	ComponentResult theError = SoundComponentSetInfo(mSourceComponent, inSourceID, inSelector, inData);
324	throw theError;
325	break;
326	};
327	}
328
329	void SMACsdec::GetSourceData(SoundComponentData** outData)
330	{
331	// initialize the return value
332	*outData = NULL;
333
334	// stuff as many packets as we can into the decoder
335	UInt32 theError = 0;
336	void* theInputData = NULL;
337	UInt32 theInputDataByteSize = 0;
338	UInt32 theInputDataFrameSize = 0;
339	#if TARGET_API_MAC_OSX
340	bool threadLocked;
341	#endif
342
343	#if !(TARGET_MAC_OS && IS_COMPILER_WORKING)
344	UInt32 totalFloats;
345	#endif
346
347	#if TARGET_API_MAC_OSX
348	// Lock the thread. The last thing we want is to have our state change in the middle of
349	// a decode -- it will typically cause a crash
350	threadLocked = mThreadStateMutex->Lock();
351	#endif
352	// prime things with the current packet
353	GetCurrentInputPacket(theInputData, theInputDataByteSize, theInputDataFrameSize);
354	// Trying to mimic Decompressor.c in this case
355	if((theInputData == NULL) \|\| (theInputDataFrameSize == 0 && theInputDataByteSize == 0) )
356	{
357	// silence with non-zero duration.
358	mOutputData.buffer = NULL;
359	*outData = mSourceData;
360	}
361	else
362	{
363	// loop and stuff the decoder with packets
364	bool isDone = false;
365	while((theInputData != NULL) && (theInputDataByteSize != 0) && (!isDone))
366	{
367	// give the current packet to the decoder
368	UInt32 theNumberInputPackets = 1;
369	UInt32 theNumberInputBytesConsumed = theInputDataByteSize;
370	AudioStreamPacketDescription theInputPacketDescription = { 0, 0, theInputDataByteSize };
371	theError = AudioCodecAppendInputData(mDecoder, theInputData, &theNumberInputBytesConsumed, &theNumberInputPackets, &theInputPacketDescription);
372	//printf("mDecoder == %lu, Appended %ld bytes in %ld packets\n", (UInt32)(&mDecoder), theNumberInputBytesConsumed, theNumberInputPackets);
373	ThrowIfError(theError, (CAException)theError, "SMACsdec::GetSourceData: got an error from AudioCodecAppendInputData");
374
375	// we know that the decoder is full if it ever says that it didn't take any data from the input buffer
376	if( (theNumberInputBytesConsumed > 0) && (theNumberInputBytesConsumed == theInputDataByteSize) )
377	{
378	// consume the data the decoder used
379	ConsumeCurrentInputPacket(theInputDataByteSize, 0);
380
381	// get the next packet
382	GetCurrentInputPacket(theInputData, theInputDataByteSize, theInputDataFrameSize);
383	}
384	else if (theNumberInputBytesConsumed > 0)
385	{
386	ConsumeCurrentInputPacket(theNumberInputBytesConsumed, 0);
387	isDone = true;
388	}
389	else
390	{
391	isDone = true;
392	}
393	}
394	// the decoder is as full of data as we can make it at this time,
395	// so pull out 1 packet of output data
396	UInt32 theOutputDataByteSize = mPacketFrameSize * sizeof(float) * mOutputData.numChannels;
397	UInt32 theNumberOutputFrames = mPacketFrameSize;
398	UInt32 theDecoderStatus = kAudioCodecProduceOutputPacketFailure;
399	theError = AudioCodecProduceOutputPackets(mDecoder, mFloatBuffer, &theOutputDataByteSize, &theNumberOutputFrames, NULL, &theDecoderStatus);
400	//printf (" theNumberOutputFrames == %ld\n",theNumberOutputFrames);
401	ThrowIfError(theError, (CAException)theError, "SMACsdec::GetSourceData: got an error from AudioCodecProduceOutputPackets");
402
403	// set up the return values if we got a packet back from the decoder
404	if(theNumberOutputFrames)
405	{
406	//theNumberOutputFrames = theOutputDataByteSize / mOutputData.numChannels / sizeof(float);
407	// ThrowIfError(theNumberOutputFrames != theOutputDataByteSize / mOutputData.numChannels / sizeof(float), "SMACsdec::GetSourceData: got an error from AudioCodecProduceOutputPackets");
408
409	#if TARGET_MAC_OS && IS_COMPILER_WORKING
410	Float32ToNativeInt16(mHasAltiVec, mFloatBuffer, ((short *)mOutputBuffer), theOutputDataByteSize >> 2);
411	#else
412	totalFloats = theOutputDataByteSize >> 2;
413	for (unsigned int i = 0; i < totalFloats; i++)
414	{
415	((short )mOutputBuffer)[i] = (SInt16)(32768.0 mFloatBuffer[i]);
416	}
417	#endif
418	mOutputData.buffer = mOutputBuffer;
419	if (mOutputData.numChannels == 2) // It's either 1 or 2 here in SMAC land
420	{
421	mOutputData.sampleCount = (theOutputDataByteSize >> 3); // These really are frames. It's a QuickTime/SoundManager ism
422	}
423	else
424	{
425	mOutputData.sampleCount = (theOutputDataByteSize >> 2);
426	}
427	*outData = &mOutputData;
428
429	#if CaptureDataToFile
430	if(mOutputFileRefNum != -1)
431	{
432	UInt32 theActualBytesWritten = 0;
433	FSWriteFork(mOutputFileRefNum, fsAtMark, 0, theOutputDataByteSize, mOutputBuffer, &theActualBytesWritten);
434	}
435	#endif
436	}
437	else
438	{
439	mOutputData.buffer = NULL;
440	mOutputData.sampleCount = 0;
441	*outData = &mOutputData;
442	}
443	}
444	#if TARGET_API_MAC_OSX
445	if(threadLocked)
446	{
447	mThreadStateMutex->Unlock();
448	}
449	#endif
450	}
451
452	void SMACsdec::GetCurrentInputPacket(void*& outPacketData, UInt32& outPacketDataByteSize, UInt32& outPacketDataFrameSize)
453	{
454	// This method is called to get a pointer to the next packet of input data.
455	// The only failure cases for the returned values are as follows:
456	// - outPacketData is NULL
457	// - outPacketData is not NULL, but outPacketDataByteSize and outPacketDataFrameSize
458	// are both equal to zero
459	// Note that this method does not consume the data, it merely returns points to it. Use
460	// ConsumeCurrentInputPacket to mark input data as consumed.
461
462	// set up the return values
463	outPacketData = NULL;
464	outPacketDataByteSize = 0;
465	outPacketDataFrameSize = 0;
466
467	// check to see if we need to get more data from the source component
468	if(SMACSCDUtility::NeedMoreSourceData(mSourceData))
469	{
470	if(mSourceData != NULL)
471	{
472	mSourceData->sampleCount = 0;
473	}
474	// we do, so get it from the source component
475	UInt32 theError = SoundComponentGetSourceData(mSourceComponent, &mSourceData);
476	ThrowIfError(theError, (CAException)theError, "SMACsdec::GetCurrentInputPacket: got an error from SoundComponentGetSourceData");
477	// We pass this on as QuickTime will not be happy if we don't.
478	// Note that this is not necessarily what the sample rate is in the original file.
479	mOutputData.sampleRate = mSourceData->sampleRate;
480	}
481
482	// if we have some data from the source component, dole out the first packet
483	if(!SMACSCDUtility::NeedMoreSourceData(mSourceData))
484	{
485	if(SMACSCDUtility::IsSoundComponentData(mSourceData))
486	{
487	// this is a normal SoundComponentData with no packetization info,
488	// so return the whole buffer
489	outPacketData = mSourceData->buffer;
490	outPacketDataByteSize = mSourceData->numChannels * (mSourceData->sampleSize >> 3) * mSourceData->sampleCount;
491	outPacketDataFrameSize = mSourceData->sampleCount;
492	}
493	else
494	{
495	// this is an ExtendedSoundComponentData
496	ExtendedSoundComponentData* theExtendedSourceData = reinterpret_cast<ExtendedSoundComponentData*>(mSourceData);
497
498	// it may or may not have packetization info in it
499	if(static_cast<UInt32>(theExtendedSourceData->recordSize) < sizeof(ExtendedSoundComponentData))
500	{
501	// it's an old ExtendedSoundComponentData which doesn't have the packetization
502	// info, so return the whole buffer
503	outPacketData = theExtendedSourceData->desc.buffer;
504	if(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid)
505	{
506	outPacketDataByteSize = theExtendedSourceData->bufferSize;
507	}
508	if(!(theExtendedSourceData->extendedFlags & kExtendedSoundSampleCountNotValid))
509	{
510	outPacketDataFrameSize = theExtendedSourceData->desc.sampleCount;
511	}
512	}
513	else
514	{
515	// it's a new ExtendedSoundComponentData which may have the packetization info
516	if(theExtendedSourceData->extendedFlags & kExtendedSoundCommonFrameSizeValid)
517	{
518	// all the packets are the same size, so return the current one
519	// note that we don't know how many frames are in this buffer
520	// also note that the buffer size field has to be valid
521	ThrowIf(!(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid), -50, "SMACsdec::GetCurrentInputPacket: need kExtendedSoundBufferSizeValid set for common packet sizes to work");
522	outPacketData = theExtendedSourceData->desc.buffer;
523	outPacketDataByteSize = theExtendedSourceData->commonFrameSize;
524	}
525	else if(theExtendedSourceData->extendedFlags & kExtendedSoundFrameSizesValid)
526	{
527	// the packets are sized according to theExtendedSourceData->frameSizesArray
528	// note that we don't know how many frames are in this buffer
529	ThrowIf(!(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid), -50, "SMACsdec::GetCurrentInputPacket: need kExtendedSoundBufferSizeValid set for arbitrary packet sizes to work");
530	outPacketData = theExtendedSourceData->desc.buffer;
531	outPacketDataByteSize = *(theExtendedSourceData->frameSizesArray);
532	}
533	else
534	{
535	// there isn't any packetization info, so return the whole buffer
536	outPacketData = theExtendedSourceData->desc.buffer;
537	if(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid)
538	{
539	outPacketDataByteSize = theExtendedSourceData->bufferSize;
540	}
541	if(!(theExtendedSourceData->extendedFlags & kExtendedSoundSampleCountNotValid))
542	{
543	outPacketDataFrameSize = theExtendedSourceData->desc.sampleCount;
544	}
545	}
546	}
547	}
548	}
549	}
550
551	void SMACsdec::ConsumeCurrentInputPacket(UInt32 inPacketDataByteSize, UInt32 inPacketDataFrameSize)
552	{
553	// This method is called in order to consume the current packet of input data.
554	// Note that this routine enforces all the expectations as far as packetization
555	// is concerned. This routine will throw exceptions if things are even slightly
556	// amiss.
557
558	// can only consume data if we have it
559	if(mSourceData != NULL)
560	{
561	if(SMACSCDUtility::IsSoundComponentData(mSourceData))
562	{
563	// this is a normal SoundComponentData with no packetization info,
564	// so consume the amount indicated, making sure that the two notions
565	// of the amount to consume are the same
566	ThrowIf(inPacketDataByteSize != (inPacketDataFrameSize * mSourceData->numChannels * (mSourceData->sampleSize >> 3)), -50, "SMACsdec::ConsumeCurrentInputPacket: concept of how much data to consume doesn't match for the normal case");
567	mSourceData->buffer += inPacketDataByteSize;
568	mSourceData->sampleCount -= inPacketDataFrameSize;
569	}
570	else
571	{
572	// this is an ExtendedSoundComponentData
573	ExtendedSoundComponentData* theExtendedSourceData = reinterpret_cast<ExtendedSoundComponentData*>(mSourceData);
574
575	// it may or may not have packetization info in it
576	if(static_cast<UInt32>(theExtendedSourceData->recordSize) < sizeof(ExtendedSoundComponentData))
577	{
578	// it's an old ExtendedSoundComponentData which doesn't have the packetization
579	// so consume the amount indicated
580	theExtendedSourceData->desc.buffer += inPacketDataByteSize;
581	if(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid)
582	{
583	theExtendedSourceData->bufferSize -= inPacketDataByteSize;
584	}
585	if(!(theExtendedSourceData->extendedFlags & kExtendedSoundSampleCountNotValid))
586	{
587	theExtendedSourceData->desc.sampleCount -= inPacketDataFrameSize;
588	}
589	}
590	else
591	{
592	// it's a new ExtendedSoundComponentData which may have the packetization info
593	if(theExtendedSourceData->extendedFlags & kExtendedSoundCommonFrameSizeValid)
594	{
595	// all the packets are the same size, so check to be sure that we are
596	// consuming the correct amount, noting that we have no clue how many
597	// frames of data this is
598	ThrowIf(inPacketDataByteSize != static_cast<UInt32>(theExtendedSourceData->commonFrameSize), -50, "SMACsdec::ConsumeCurrentInputPacket: asked to consume something different from the common packet size");
599	ThrowIf(!(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid), -50, "SMACsdec::ConsumeCurrentInputPacket: need kExtendedSoundBufferSizeValid set for common packet sizes to work");
600	theExtendedSourceData->desc.buffer += inPacketDataByteSize;
601	theExtendedSourceData->bufferSize -= inPacketDataByteSize;
602	}
603	else if(theExtendedSourceData->extendedFlags & kExtendedSoundFrameSizesValid)
604	{
605	// the packets are sized according to theExtendedSourceData->frameSizesArray,
606	// so check to be sure we are consuming the correct amount of data, noting that
607	// we have no clue how many frames of data this is
608	ThrowIf(inPacketDataByteSize != static_cast<UInt32>(*(theExtendedSourceData->frameSizesArray)), -50, "SMACsdec::ConsumeCurrentInputPacket: asked to consume something different from the first packet size in theExtendedSourceData->frameSizesArray");
609	ThrowIf(!(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid), -50, "SMACsdec::ConsumeCurrentInputPacket: need kExtendedSoundBufferSizeValid set for arbitrary packet sizes to work");
610	theExtendedSourceData->desc.buffer += inPacketDataByteSize;
611	theExtendedSourceData->frameSizesArray += 1;
612	theExtendedSourceData->bufferSize -= inPacketDataByteSize;
613	}
614	else
615	{
616	// there isn't any packetization info, so consume the amount indicated
617	theExtendedSourceData->desc.buffer += inPacketDataByteSize;
618	if(theExtendedSourceData->extendedFlags & kExtendedSoundBufferSizeValid)
619	{
620	theExtendedSourceData->bufferSize -= inPacketDataByteSize;
621	}
622	if(!(theExtendedSourceData->extendedFlags & kExtendedSoundSampleCountNotValid))
623	{
624	theExtendedSourceData->desc.sampleCount -= inPacketDataFrameSize;
625	}
626	}
627	}
628	}
629	}
630	}

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root/trunk/SMAC/SMACsdec.cpp

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