void prepareToPlay()
{
if (juceFilter != 0)
{
#if ! JucePlugin_IsSynth
juceFilter->setPlayConfigDetails (GetInput(0)->GetStreamFormat().mChannelsPerFrame,
#else
juceFilter->setPlayConfigDetails (0,
#endif
GetOutput(0)->GetStreamFormat().mChannelsPerFrame,
GetSampleRate(),
GetMaxFramesPerSlice());
bufferSpace.setSize (juceFilter->getNumInputChannels() + juceFilter->getNumOutputChannels(),
GetMaxFramesPerSlice() + 32);
juceFilter->prepareToPlay (GetSampleRate(),
GetMaxFramesPerSlice());
midiEvents.clear();
juce_free (channels);
channels = (float**) juce_calloc (sizeof (float*) * jmax (juceFilter->getNumInputChannels(),
juceFilter->getNumOutputChannels()) + 4);
prepared = true;
}
//--------------------------------------------------------------------------------
OSStatus Tracker::Initialize()
{
OSStatus status = AUEffectBase::Initialize();
if (status == noErr)
{
summedInputBuffer = (float*) malloc(GetMaxFramesPerSlice() * sizeof(float));
if (summedInputBuffer != NULL)
{
for (UInt32 i=0; i < GetMaxFramesPerSlice(); i++)
summedInputBuffer[i] = 0.0f;
}
else
status = memFullErr;
}
return status;
}
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));
}
