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C++ CAStreamBasicDescription类代码示例

本文整理汇总了C++中CAStreamBasicDescription类的典型用法代码示例。如果您正苦于以下问题：C++ CAStreamBasicDescription类的具体用法？C++ CAStreamBasicDescription怎么用？C++ CAStreamBasicDescription使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了CAStreamBasicDescription类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: GetOALFormatFromASBD

// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UInt32	GetOALFormatFromASBD(CAStreamBasicDescription	&inASBD)
{
	switch (inASBD.mFormatID)
	{
		case kAudioFormatLinearPCM:
			// NOTE: if float: return 0;
			if (inASBD.mFormatFlags & kAudioFormatFlagIsFloat)  
			{
				return (0);		// float currently unsupported
			}
			else
			{
				if (inASBD.NumberChannels() == 1 && inASBD.mBitsPerChannel == 16)
					return AL_FORMAT_MONO16;
				else if (inASBD.NumberChannels() == 2 && inASBD.mBitsPerChannel == 16)
					return AL_FORMAT_STEREO16;
				else if (inASBD.NumberChannels() == 1 && inASBD.mBitsPerChannel == 8)
					return AL_FORMAT_MONO8;
				else if (inASBD.NumberChannels() == 2 && inASBD.mBitsPerChannel == 8)
					return AL_FORMAT_STEREO8;
			}
			break;
		
		default:
			return (0);
			break;
	}
	return (0);
}
开发者ID:Aye1，项目名称:RVProject，代码行数:30，代码来源:oalOSX.cpp

示例2: AUEffectBase

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	karoke::karoke
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
karoke::karoke(AudioUnit component)
	: AUEffectBase(component, false)
{
	CreateElements();
	CAStreamBasicDescription streamDescIn;
	streamDescIn.SetCanonical(NUM_INPUTS, false);	// number of input channels
	streamDescIn.mSampleRate = GetSampleRate();
	
	CAStreamBasicDescription streamDescOut;
	streamDescOut.SetCanonical(NUM_OUTPUTS, false);	// number of output channels
	streamDescOut.mSampleRate = GetSampleRate();
	
	Inputs().GetIOElement(0)->SetStreamFormat(streamDescIn);
	Outputs().GetIOElement(0)->SetStreamFormat(streamDescOut);
	
	Globals()->UseIndexedParameters(kNumberOfParameters);
	SetParameter(kParam_One, kDefaultValue_ParamOne );
        
#if AU_DEBUG_DISPATCHER
	mDebugDispatcher = new AUDebugDispatcher (this);
#endif
	
	mLeftFilter = new FirFilter(200);
	mLeftFilter->setCoeffecients(lp_200, 200);
	mRightFilter = new FirFilter(200);
	mRightFilter->setCoeffecients(lp_200, 200);
}
开发者ID:slagyr，项目名称:8LU-DSP，代码行数:30，代码来源:karoke.cpp

示例3: AUEffectBase

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	AUPulseDetector::AUPulseDetector
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUPulseDetector::AUPulseDetector(AudioUnit component)
	: AUEffectBase(component),
	  mChildObject(NULL)
{
	CreateElements();
	
	CAStreamBasicDescription monoDesc;
	monoDesc.SetAUCanonical (1, false);
	monoDesc.mSampleRate = 44100.;
	
	GetOutput(0)->SetStreamFormat(monoDesc);
	GetInput(0)->SetStreamFormat(monoDesc);

	Globals()->UseIndexedParameters (5);
	Globals()->SetParameter (kPulseThreshold, kPulseThresholdDefault);
	Globals()->SetParameter (kPulseLength, kPulseLengthDefault);
	Globals()->SetParameter (kPulseRestTime, kPulseRestTimeDefault);
	Globals()->SetParameter (kDoPulseDetection, kDoPulseDetectionDefault);
	Globals()->SetParameter (kWritePulseStats, 0);

	mPulseTimeStats = new PulseTS[kPulseTSSize];
	
#if AU_DEBUG_DISPATCHER
	mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
开发者ID:fruitsamples，项目名称:DiagnosticAUs，代码行数:30，代码来源:AUPulseDetector.cpp

示例4: HasDynamicScope

OSStatus	CAAudioUnit::ConfigureDynamicScope (AudioUnitScope 		inScope,
											UInt32 					inNumElements,
											UInt32 					*inChannelsPerElement,
											Float64 				inSampleRate)
{
	SInt32 numChannels = 0;
	bool isDyamic = HasDynamicScope (inScope, numChannels);
	if (isDyamic == false)
		return kAudioUnitErr_InvalidProperty;

	//lets to a sanity check...
	// if numChannels == -1, then it can do "any"...
	if (numChannels > 0) {
		SInt32 count = 0;
		for (unsigned int i = 0; i < inNumElements; ++i)
			count += inChannelsPerElement[i];
		if (count > numChannels)
			return kAudioUnitErr_InvalidPropertyValue;
	}

	OSStatus result = SetElementCount (inScope, inNumElements);
	if (result)
		return result;

	CAStreamBasicDescription desc;
	desc.mSampleRate = inSampleRate;
	for (unsigned int i = 0; i < inNumElements; ++i) {
		desc.SetCanonical (inChannelsPerElement[i], false);
		result = SetFormat (inScope, i, desc);
		if (result)
			return result;
	}
	return noErr;
}
开发者ID:63n，项目名称:ardour，代码行数:34，代码来源:CAAudioUnit.cpp

示例5: GetFormat

OSStatus	CAAudioUnit::SetNumberChannels (AudioUnitScope	inScope,
										AudioUnitElement	inEl,
										UInt32				inChans)
{
			// set this as the output of the AU
	CAStreamBasicDescription desc;
	OSStatus result = GetFormat (inScope, inEl, desc);
		if (result) return result;
	desc.SetCanonical (inChans, desc.IsInterleaved());
	result = SetFormat (inScope, inEl, desc);
	return result;
}
开发者ID:63n，项目名称:ardour，代码行数:12，代码来源:CAAudioUnit.cpp

示例6: 

Minim::AudioFormat::AudioFormat( float sampleRate, int numberOfChannels )
{
	CAStreamBasicDescription streamDesc;
	streamDesc.mSampleRate = 44100.0f;
	streamDesc.SetAUCanonical( numberOfChannels, true );
	mChannels = streamDesc.mChannelsPerFrame;
	mSampleRate = streamDesc.mSampleRate;
	mFrameRate = streamDesc.mSampleRate;
	mFrameSize = streamDesc.mBytesPerFrame;
	mSampleSizeInBits = streamDesc.mBitsPerChannel;
	mBigEndian = (streamDesc.mFormatFlags & kLinearPCMFormatFlagIsBigEndian);
}
开发者ID:EQ4，项目名称:minim-cpp，代码行数:12，代码来源:AudioFormat.cpp

示例7: sizeof

void				AUBufferList::Allocate(const CAStreamBasicDescription &format, UInt32 nFrames)
{
	UInt32 nStreams;
	if (format.IsInterleaved()) {
		nStreams = 1;
	} else {
		nStreams = format.mChannelsPerFrame;
	}

	// careful -- the I/O thread could be running!
	if (nStreams > mAllocatedStreams) {
		size_t theHeaderSize = sizeof(AudioBufferList) - sizeof(AudioBuffer);
		mPtrs = (AudioBufferList *)CA_realloc(mPtrs,
									SafeMultiplyAddUInt32(nStreams, sizeof(AudioBuffer), theHeaderSize));
		mAllocatedStreams = nStreams;
	}
	UInt32 bytesPerStream = SafeMultiplyAddUInt32(nFrames, format.mBytesPerFrame, 0xF) & ~0xF;
	UInt32 nBytes = SafeMultiplyAddUInt32(nStreams, bytesPerStream, 0);
	if (nBytes > mAllocatedBytes) {
		if (mExternalMemory) {
			mExternalMemory = false;
			mMemory = NULL;
		}
		mMemory = (Byte *)CA_realloc(mMemory, nBytes);
		mAllocatedBytes = nBytes;
	}
	mAllocatedFrames = nFrames;
	mPtrState = kPtrsInvalid;
}
开发者ID:63n，项目名称:ardour，代码行数:29，代码来源:AUBuffer.cpp

示例8: offsetof

void				AUBufferList::Allocate(const CAStreamBasicDescription &format, UInt32 nFrames)
{
	UInt32 nStreams;
	UInt32 channelsPerStream;
	if (format.IsInterleaved()) {
		nStreams = 1;
		channelsPerStream = format.mChannelsPerFrame;
	} else {
		nStreams = format.mChannelsPerFrame;
		channelsPerStream = 1;
	}

	// careful -- the I/O thread could be running!
	if (nStreams > mAllocatedStreams) {
		mPtrs = (AudioBufferList *)CA_realloc(mPtrs, offsetof(AudioBufferList, mBuffers) + nStreams * sizeof(AudioBuffer));
		mAllocatedStreams = nStreams;
	}
	UInt32 bytesPerStream = (nFrames * format.mBytesPerFrame + 0xF) & ~0xF;
	UInt32 nBytes = nStreams * bytesPerStream;	
	if (nBytes > mAllocatedBytes) {
		if (mExternalMemory) {
			mExternalMemory = false;
			mMemory = NULL;
		}
		mMemory = (Byte *)CA_realloc(mMemory, nBytes);
		mAllocatedBytes = nBytes;
	}
	mAllocatedFrames = nFrames;
	mPtrState = kPtrsInvalid;
}
开发者ID:EQ4，项目名称:JamomaMax，代码行数:30，代码来源:AUBuffer.cpp

示例9: delete

void	SonogramViewDemo::AllocateBuffers()
{
	mBlockSize = 1024;
	mNumBins = mBlockSize>>1;

	if (mSpectrumBuffer) {
		// delete calls deallocate
		delete (mSpectrumBuffer);
	}
	mSpectrumBuffer = new CARingBuffer();
	mSpectrumBuffer->Allocate(GetNumberOfChannels(), mNumBins*sizeof(Float32), kMaxSonogramLatency);

	CAStreamBasicDescription	bufClientDesc;		
	bufClientDesc.SetCanonical(GetNumberOfChannels(), false);
	bufClientDesc.mSampleRate = GetSampleRate();

	UInt32 frameLength = kDefaultValue_BufferSize*sizeof(Float32);
	
	if (mFetchingBufferList) {		
		mFetchingBufferList->DeallocateBuffers();
		delete(mFetchingBufferList);
	}
	mFetchingBufferList = CABufferList::New("fetch buffer", bufClientDesc );
	mFetchingBufferList->AllocateBuffers(frameLength);
	
	if (mSpectralDataBufferList) {
		mSpectralDataBufferList->DeallocateBuffers();
		delete(mSpectralDataBufferList);
	}
	mSpectralDataBufferList = CABufferList::New("temp buffer", bufClientDesc );
	mSpectralDataBufferList->AllocateBuffers(frameLength);

	memset (&mRenderStamp, 0, sizeof(AudioTimeStamp));
	mRenderStamp.mFlags = kAudioTimeStampSampleTimeValid;	
	
	
	mSpectralProcessor.free();
	mSpectralProcessor = new CASpectralProcessor(mBlockSize, mNumBins, GetNumberOfChannels(), GetMaxFramesPerSlice());
	
	if (mMinAmp) free(mMinAmp);
	mMinAmp = (Float32*) calloc(GetNumberOfChannels(), sizeof(Float32));
	
	if (mMaxAmp) free(mMaxAmp);
	mMaxAmp = (Float32*) calloc(GetNumberOfChannels(), sizeof(Float32));

		
}
开发者ID:fruitsamples，项目名称:SonogramViewDemo，代码行数:47，代码来源:SonogramViewDemo.cpp

示例10: ChangeStreamFormat

/*! @method ChangeStreamFormat */
OSStatus			AUPannerBase::ChangeStreamFormat (
									AudioUnitScope						inScope,
									AudioUnitElement					inElement,
									const CAStreamBasicDescription & 	inPrevFormat,
									const CAStreamBasicDescription &	inNewFormat)
{
	if (inScope == kAudioUnitScope_Input && !InputChannelConfigIsSupported(inNewFormat.NumberChannels())) 
		return kAudioUnitErr_FormatNotSupported;
		
	if (inScope == kAudioUnitScope_Output && !OutputChannelConfigIsSupported(inNewFormat.NumberChannels())) 
		return kAudioUnitErr_FormatNotSupported;
		
	if (inNewFormat.NumberChannels() != inPrevFormat.NumberChannels())
		RemoveAudioChannelLayout(inScope, inElement);
		
	return AUBase::ChangeStreamFormat(inScope, inElement, inPrevFormat, inNewFormat);
}
开发者ID:0xJoker，项目名称:apple-ios-samples，代码行数:18，代码来源:AUPannerBase.cpp

示例11: Stop

void	CAAudioFileWriter::SetFile(const FSRef &parentDir, CFStringRef filename, AudioFileTypeID filetype, const CAStreamBasicDescription &dataFormat, const CAAudioChannelLayout *layout)
{
	Stop();
	CancelAndDisposeBuffers();
	
	delete mFile;   mFile = NULL;
	mFile = new CAAudioFile;
	mFile->CreateNew(parentDir, filename, filetype, dataFormat, layout ? &layout->Layout() : NULL);
	
	const CAStreamBasicDescription &fileFmt = mFile->GetFileDataFormat();
	CAStreamBasicDescription iofmt;
	iofmt.SetCanonical(fileFmt.mChannelsPerFrame, false);	// deinterleaved
	iofmt.mSampleRate = fileFmt.mSampleRate;
	mFile->SetClientFormat(iofmt, NULL);
	
	SetFormat(iofmt);
}
开发者ID:fruitsamples，项目名称:PublicUtility，代码行数:17，代码来源:CAAudioFileStreamer.cpp

示例12: RemoveFromWorkerThread

void	ZKMORFileWriter::CreateFile(const FSRef &parentDir, CFStringRef filename, AudioFileTypeID filetype, const CAStreamBasicDescription &dataFormat, const CAAudioChannelLayout *layout)
{
	RemoveFromWorkerThread();
	
	FlushAndClose();
	DisposeBuffers();
	
	delete mFile;   mFile = NULL;
	mFile = new CAAudioFile;
	mFile->CreateNew(parentDir, filename, filetype, dataFormat, layout ? &layout->Layout() : NULL);
	
	const CAStreamBasicDescription &fileFmt = mFile->GetFileDataFormat();
	CAStreamBasicDescription iofmt;
	iofmt.SetCanonical(fileFmt.mChannelsPerFrame, false);	// deinterleaved
	iofmt.mSampleRate = fileFmt.mSampleRate;
	SetClientDataFormat(iofmt);
	AddToWorkerThread();
}
开发者ID:paulz，项目名称:zirkonium，代码行数:18，代码来源:ZKMORFileStreamer.cpp

示例13: if

ComponentResult	ElCAJAS::ChangeStreamFormat(AudioUnitScope inScope,
        AudioUnitElement inElement,
        const CAStreamBasicDescription& inPrevFormat,
        const CAStreamBasicDescription& inNewFormat)
{
    if (inScope == 1) {
        int reqChans = inNewFormat.NumberChannels();
        if (reqChans > 2 || reqChans < 1)
            return kAudioUnitErr_FormatNotSupported;
        else
            return noErr;
    } else if (inScope == 2) {
        int reqChans = inNewFormat.NumberChannels();
        if (reqChans != 2)
            return kAudioUnitErr_FormatNotSupported;
        else
            return noErr;
    }
    return kAudioUnitErr_FormatNotSupported;
}
开发者ID:briancline，项目名称:jackosx，代码行数:20，代码来源:JackAU.cpp

示例14: CARingBuffer

void			WaveformViewDemo::AllocateBuffers()
{
	if (mAudioBuffer) delete (mAudioBuffer);
	mAudioBuffer = new CARingBuffer();
	mAudioBuffer->Allocate(GetNumberOfChannels(), sizeof(Float32), kDefaultValue_BufferSize); 
	// unlike the spectral buffers we write one number at a time, the spectral ones do entire analysis at a time

	CAStreamBasicDescription	bufClientDesc;		
	bufClientDesc.SetCanonical(GetNumberOfChannels(), false);
	bufClientDesc.mSampleRate = GetSampleRate();

	if (mFetchingBufferList) {
		mFetchingBufferList->DeallocateBuffers();
		delete(mFetchingBufferList);
	}
	mFetchingBufferList = CABufferList::New("fetch buffer", bufClientDesc );
	mFetchingBufferList->AllocateBuffers(sizeof(Float32) * kDefaultValue_BufferSize);
	
	
	
	memset (&mRenderStamp, 0, sizeof(AudioTimeStamp));
	mRenderStamp.mFlags = kAudioTimeStampSampleTimeValid;
		
}
开发者ID:fruitsamples，项目名称:SimpleSDK，代码行数:24，代码来源:WaveformViewDemo.cpp

示例15: 

// this should NOT be called while I/O is in process
void		AUBufferList::UseExternalBuffer(const CAStreamBasicDescription &format, const AudioUnitExternalBuffer &buf)
{
	UInt32 alignedSize = buf.size & ~0xF;
	if (mMemory != NULL && alignedSize >= mAllocatedBytes) {
		// don't accept the buffer if we already have one and it's big enough
		// if we don't already have one, we don't need one
		Byte *oldMemory = mMemory;
		mMemory = buf.buffer;
		mAllocatedBytes = alignedSize;
		// from Allocate(): nBytes = nStreams * nFrames * format.mBytesPerFrame;	
		// thus: nFrames = nBytes / (nStreams * format.mBytesPerFrame)
		mAllocatedFrames = mAllocatedBytes / (format.NumberChannelStreams() * format.mBytesPerFrame);
		mExternalMemory = true;
		free(oldMemory);
	}
}
开发者ID:EQ4，项目名称:JamomaMax，代码行数:17，代码来源:AUBuffer.cpp


注：本文中的CAStreamBasicDescription类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。