SMACscom.cpp

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1	/* Copyright: © Copyright 2004 Apple Computer, Inc. All rights reserved.
2
3	Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
4	("Apple") in consideration of your agreement to the following terms, and your
5	use, installation, modification or redistribution of this Apple software
6	constitutes acceptance of these terms. If you do not agree with these terms,
7	please do not use, install, modify or redistribute this Apple software.
8
9	In consideration of your agreement to abide by the following terms, and subject
10	to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
11	copyrights in this original Apple software (the "Apple Software"), to use,
12	reproduce, modify and redistribute the Apple Software, with or without
13	modifications, in source and/or binary forms; provided that if you redistribute
14	the Apple Software in its entirety and without modifications, you must retain
15	this notice and the following text and disclaimers in all such redistributions of
16	the Apple Software. Neither the name, trademarks, service marks or logos of
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18	Apple Software without specific prior written permission from Apple. Except as
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20	are granted by Apple herein, including but not limited to any patent rights that
21	may be infringed by your derivative works or by other works in which the Apple
22	Software may be incorporated.
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24	The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
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26	WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27	PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
28	COMBINATION WITH YOUR PRODUCTS.
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30	IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
31	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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35	(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
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37	*/
38	/*=============================================================================
39	SMACscom.cpp
40
41	=============================================================================*/
42
43	//=============================================================================
44	// Includes
45	//=============================================================================
46	#include <CAConditionalMacros.h>
47
48	#include <string.h>
49
50	#include "SMACscom.h"
51	#include "CADebugMacros.h"
52	#include "CAException.h"
53	#include "SMACSCDUtility.h"
54
55	#if defined( __GNUC__ )
56	#if( __GNUC__ < 3 )
57	#define IS_COMPILER_WORKING 0
58	#else
59	#define IS_COMPILER_WORKING 1
60	#endif
61	#else
62	#define IS_COMPILER_WORKING 1
63	#endif
64
65	#if TARGET_MAC_OS && IS_COMPILER_WORKING
66	#include "PCMBlitterLibDispatch.h"
67	#endif
68
69	#ifndef min
70	#define min(a, b) ((a) < (b) ? (a) : (b))
71	#endif
72
73	//=============================================================================
74	// SMACscom
75	//=============================================================================
76
77	SMACscom::SMACscom(ComponentInstance inSelf, UInt32 inFormatID)
78	:
79	mSelf(inSelf),
80	mSourceComponent(NULL),
81	mEncoder(NULL),
82	mSourceID(0),
83	mSourceData(NULL),
84	mPacketFrameSize(0),
85	mMaxPacketByteSize(0),
86	mOutputBuffer(NULL)
87	{
88	// fill out the output ExtendedSoundComponentData
89	memset(&mOutputData, 0, sizeof(ExtendedSoundComponentData));
90	mOutputData.desc.flags = kExtendedSoundData;
91	mOutputData.desc.format = inFormatID;
92	mOutputData.desc.sampleSize = 16;
93	mOutputData.recordSize = sizeof(ExtendedSoundComponentData);
94	mOutputData.extendedFlags = kExtendedSoundBufferSizeValid;
95	mSourceIsExhausted = false;
96	#if TARGET_API_MAC_OSX && TARGET_CPU_PPC
97	mHasAltiVec = SMACSCDUtility::HasAltiVec();
98	#else
99	mHasAltiVec = false;
100	#endif
101	}
102
103	SMACscom::~SMACscom()
104	{
105	if(mEncoder != NULL)
106	{
107	CloseComponent(mEncoder);
108	}
109
110	delete[] mOutputBuffer;
111	}
112
113	void SMACscom::SetSource(SoundSource inSourceID, ComponentInstance inSourceComponent)
114	{
115	mSourceID = inSourceID;
116	mSourceComponent = inSourceComponent;
117	mSourceData = NULL;
118	}
119
120	void SMACscom::SetOutput(SoundComponentData* inRequested, SoundComponentData** outActual)
121	{
122	if(inRequested->format == mOutputData.desc.format)
123	{
124	memset(&mOutputData, 0, sizeof(ExtendedSoundComponentData));
125	mOutputData.desc = *inRequested;
126	mOutputData.recordSize = sizeof(ExtendedSoundComponentData);
127	mOutputData.extendedFlags = kExtendedSoundBufferSizeValid;
128	}
129	else
130	{
131	outActual = reinterpret_cast<SoundComponentData>(&mOutputData);
132	throw static_cast<ComponentResult>(paramErr);
133	}
134	}
135
136	void SMACscom::PlaySourceBuffer(SoundSource inSourceID, SoundParamBlock* inPB, SInt32 inActions)
137	{
138	// get rid of the input data
139	mSourceData = NULL;
140	mOutputData.desc.sampleCount = 0;
141	mOutputData.bufferSize = 0;
142	mOutputData.frameCount = 0;
143	mOutputData.commonFrameSize = 0;
144
145	ComponentResult theError = SoundComponentPlaySourceBuffer(mSourceComponent, inSourceID, inPB, inActions);
146	ThrowIfError(theError, (CAException)theError, "SMACscom::PlaySourceBuffer: got an error from SoundComponentPlaySourceBuffer");
147	}
148
149	void SMACscom::StopSource(SInt16 inNumberSources, SoundSource* inSources)
150	{
151	// get rid of the input data
152	mSourceData = NULL;
153	mOutputData.desc.sampleCount = 0;
154	mOutputData.bufferSize = 0;
155	mOutputData.frameCount = 0;
156	mOutputData.commonFrameSize = 0;
157
158	// reset the encoder
159	if(mEncoder != NULL)
160	{
161	AudioCodecReset(mEncoder);
162	}
163
164	ComponentResult theError = SoundComponentStopSource(mSourceComponent, inNumberSources, inSources);
165	ThrowIfError(theError, (CAException)theError, "SMACscom::StopSource: got an error from SoundComponentStopSource");
166	}
167
168	void SMACscom::GetInfo(SoundSource inSourceID, OSType inSelector, void* outData)
169	{
170	switch(inSelector)
171	{
172	case siCompressionFactor:
173	GetCompressionInfo(static_cast<CompressionInfo>(outData));
174	break;
175
176	case siCompressionParams:
177	GetCompressionParams(outData);
178	break;
179
180	default:
181	ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACscom::GetInfo: no source to pass request to")
182	ComponentResult theError = SoundComponentGetInfo(mSourceComponent, inSourceID, inSelector, outData);
183	ThrowIfError(theError, (CAException)theError, "SMACscom::GetInfo: got an error from SoundComponentGetInfo");
184	break;
185	};
186	}
187
188	void SMACscom::SetInfo(SoundSource inSourceID, OSType inSelector, void* inData)
189	{
190	switch(inSelector)
191	{
192	case siCompressionParams:
193	{
194	// process the the new params and produce an initialized
195	// AudioCodec instance
196	ComponentInstance theEncoder = SetCompressionParams(inData);
197	ThrowIf(theEncoder == NULL, badFormat, "SMACscom::SetInfo: siCompressionParams didn't generate an encoder");
198
199	// get rid of the input data
200	mSourceData = NULL;
201	mOutputData.desc.sampleCount = 0;
202	mOutputData.bufferSize = 0;
203	mOutputData.frameCount = 0;
204	mOutputData.commonFrameSize = 0;
205
206	// close the old encoder if necessary
207	if((mEncoder != NULL) && (theEncoder != mEncoder))
208	{
209	CloseComponent(mEncoder);
210	}
211
212	// use the new one
213	mEncoder = theEncoder;
214
215	// get the number of frames in 1 packet of data
216	UInt32 theSize = sizeof(UInt32);
217	ComponentResult theError = AudioCodecGetProperty(mEncoder, kAudioCodecPropertyPacketFrameSize, &theSize, &mPacketFrameSize);
218	ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: siCompressionParams got an error from AudioCodecGetProperty while getting the packet frame size");
219
220	// get the maximum number of bytes in 1 packet of data
221	theSize = sizeof(UInt32);
222	theError = AudioCodecGetProperty(mEncoder, kAudioCodecPropertyMaximumPacketByteSize, &theSize, &mMaxPacketByteSize);
223	ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: siCompressionParams got an error from AudioCodecGetProperty while getting the maximum packet byte size");
224
225	// toss the old output buffer
226	delete[] mOutputBuffer;
227
228	// allocate enough space for 1 packet of data, since that's
229	// that's all this component will produce per call to GetSourceData
230	mOutputBuffer = new Byte[mMaxPacketByteSize];
231	}
232	break;
233
234	case siSourceIsExhausted:
235	// in this case it seems to be passed by value -- ugh!
236	mSourceIsExhausted = (Boolean)((UInt32)inData);
237	// Now pass this on, so no break!
238	default:
239	ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACscom::SetInfo: no source to pass request to")
240	ComponentResult theError = SoundComponentSetInfo(mSourceComponent, inSourceID, inSelector, inData);
241	ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: got an error from SoundComponentSetInfo");
242	break;
243	};
244	}
245
246	void SMACscom::GetSourceData(SoundComponentData** outData)
247	{
248	ComponentResult theError = 0;
249	UInt32 theNumberOutputPackets = 0;
250	UInt32 theEncoderStatus = 0;
251	UInt32 theActualOutputDataByteSize = 0;
252	UInt32 maxPacketSize = 0;
253	#if !TARGET_MAC_OS \|\| !IS_COMPILER_WORKING
254	float * tempFloatPtr;
255	unsigned long tempULong = 0;
256	float tempFloat;
257	#endif
258	*outData = NULL;
259
260	// make sure we have some source data to start with
261	if(SMACSCDUtility::NeedMoreSourceData(mSourceData))
262	{
263	theError = SoundComponentGetSourceData(mSourceComponent, &mSourceData);
264	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from SoundComponentGetSourceData");
265	}
266
267	// spin until we produce a packet of data or we run completely out of source data
268	UInt32 theFramesProduced = 0;
269	UInt32 theOutputDataByteSize = 0;
270	while(SMACSCDUtility::HasData(mSourceData) && (theFramesProduced < mPacketFrameSize))
271	{
272	// stuff as much input data into the encoder as we can
273	UInt32 theInputDataByteSize = SMACSCDUtility::GetDataByteSize(mSourceData);
274	UInt32 theNumberOfPackets = 0;
275	maxPacketSize = min(kMaxInputSamples, theInputDataByteSize/sizeof(SInt16));
276	#if TARGET_MAC_OS && IS_COMPILER_WORKING
277	NativeInt16ToFloat32( mHasAltiVec, ((short *)(mSourceData->buffer)), mFloatBuffer, maxPacketSize, 16);
278	#else
279	for (UInt32 i = 0; i < maxPacketSize; i++)
280	{
281	tempFloat = (float)(((short *)(mSourceData->buffer))[i]);
282	tempFloatPtr = &tempFloat;
283	if (tempFloat != 0.0 && tempFloat != -0.0)
284	{
285	tempULong = ((unsigned long )tempFloatPtr);
286	tempULong -= 0x07800000;
287	tempFloatPtr = (float *)(&tempULong);
288	}
289	mFloatBuffer[i] = *tempFloatPtr;
290	}
291	#endif
292	theInputDataByteSize = maxPacketSize * 4; // this is all we have converted
293	//theInputDataByteSize *= 2;
294	theError = AudioCodecAppendInputData(mEncoder, mFloatBuffer, &theInputDataByteSize, &theNumberOfPackets, NULL);
295	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecAppendInputData");
296
297	// update the source data with the amount of data consumed
298	SMACSCDUtility::ConsumedData(mSourceData, theInputDataByteSize >> 1);
299
300	// see if we can get a packet of output data
301	theActualOutputDataByteSize = mMaxPacketByteSize;
302	theNumberOutputPackets = 1;
303	theEncoderStatus = kAudioCodecProduceOutputPacketFailure;
304	theError = AudioCodecProduceOutputPackets(mEncoder, mOutputBuffer, &theActualOutputDataByteSize, &theNumberOutputPackets, NULL, &theEncoderStatus);
305	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecProduceOutputPackets");
306
307	if(theNumberOutputPackets == 1)
308	{
309	// we produced a full packet of frames, so we're done
310	theFramesProduced = mPacketFrameSize;
311	theOutputDataByteSize += theActualOutputDataByteSize;
312
313	}
314	else
315	{
316	// we didn't get the data, so get more input data if we have to
317	if(SMACSCDUtility::NeedMoreSourceData(mSourceData))
318	{
319	theError = SoundComponentGetSourceData(mSourceComponent, &mSourceData);
320	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from SoundComponentGetSourceData");
321	}
322	}
323	}
324
325	if(theFramesProduced < mPacketFrameSize)
326	{
327	// Tell the encoder to pad with 0s -- this will change once the API is added
328	if (mSourceIsExhausted)
329	{
330	UInt32 theInputDataByteSize = SMACSCDUtility::GetDataByteSize(mSourceData); // better be 0
331	UInt32 theNumberOfPackets = 0;
332	maxPacketSize = min(kMaxInputSamples, theInputDataByteSize/sizeof(SInt16));
333	#if TARGET_MAC_OS && IS_COMPILER_WORKING
334	NativeInt16ToFloat32( mHasAltiVec, ((short *)(mSourceData->buffer)), mFloatBuffer, maxPacketSize, 16);
335	#else
336	for (UInt32 i = 0; i < maxPacketSize; i++)
337	{
338	tempFloat = (float)(((short *)(mSourceData->buffer))[i]);
339	tempFloatPtr = &tempFloat;
340	if (tempFloat != 0.0 && tempFloat != -0.0)
341	{
342	tempULong = ((unsigned long )tempFloatPtr);
343	tempULong -= 0x07800000;
344	tempFloatPtr = (float *)(&tempULong);
345	}
346	mFloatBuffer[i] = *tempFloatPtr;
347	}
348	#endif
349	theInputDataByteSize = maxPacketSize * 4; // this is all we have converted
350	//theInputDataByteSize *= 2;
351	theError = AudioCodecAppendInputData(mEncoder, mFloatBuffer, &theInputDataByteSize, &theNumberOfPackets, NULL);
352	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecAppendInputData");
353	}
354
355	// we ran out of input data, but we still haven't produced enough output data
356	// so we have to try one last time to pull on the encoder in case it has
357	// some left overs that it can give us
358	theActualOutputDataByteSize = mMaxPacketByteSize;
359	theNumberOutputPackets = 1;
360	theEncoderStatus = kAudioCodecProduceOutputPacketFailure;
361	theError = AudioCodecProduceOutputPackets(mEncoder, mOutputBuffer, &theActualOutputDataByteSize, &theNumberOutputPackets, NULL, &theEncoderStatus);
362	ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecProduceOutputPackets");
363
364	if(theNumberOutputPackets == 1)
365	{
366	// we produced a full packet of frames, so we're done
367	theFramesProduced = mPacketFrameSize;
368	theOutputDataByteSize += theActualOutputDataByteSize;
369	}
370	}
371
372	// set up the return values if any data was produced
373	if(theFramesProduced > 0)
374	{
375	mOutputData.desc.buffer = mOutputBuffer;
376	mOutputData.desc.sampleCount = theFramesProduced;
377	mOutputData.bufferSize = theOutputDataByteSize;
378	mOutputData.frameCount = 1;
379	mOutputData.commonFrameSize = theOutputDataByteSize;
380	mOutputData.desc.numChannels = mSourceData->numChannels;
381	outData = reinterpret_cast<SoundComponentData>(&mOutputData);
382	}
383	}

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