ComponentResult AUInstrumentBase::Render( AudioUnitRenderActionFlags & ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 inNumberFrames)
{
PerformEvents(inTimeStamp);
UInt32 numOutputs = Outputs().GetNumberOfElements();
for (UInt32 j = 0; j < numOutputs; ++j)
{
AudioBufferList& bufferList = GetOutput(j)->GetBufferList();
for (UInt32 k = 0; k < bufferList.mNumberBuffers; ++k)
{
memset(bufferList.mBuffers[k].mData, 0, bufferList.mBuffers[k].mDataByteSize);
}
}
UInt32 numGroups = Groups().GetNumberOfElements();
for (UInt32 j = 0; j < numGroups; ++j)
{
SynthGroupElement *group = (SynthGroupElement*)Groups().GetElement(j);
OSStatus err = group->Render(inNumberFrames);
if (err) return err;
}
mAbsoluteSampleFrame += inNumberFrames;
return noErr;
}
OSStatus AUInstrumentBase::Render( AudioUnitRenderActionFlags & ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 inNumberFrames)
{
PerformEvents(inTimeStamp);
AUScope &outputs = Outputs();
UInt32 numOutputs = outputs.GetNumberOfElements();
for (UInt32 j = 0; j < numOutputs; ++j)
{
GetOutput(j)->PrepareBuffer(inNumberFrames); // AUBase::DoRenderBus() only does this for the first output element
AudioBufferList& bufferList = GetOutput(j)->GetBufferList();
for (UInt32 k = 0; k < bufferList.mNumberBuffers; ++k)
{
memset(bufferList.mBuffers[k].mData, 0, bufferList.mBuffers[k].mDataByteSize);
}
}
UInt32 numGroups = Groups().GetNumberOfElements();
for (UInt32 j = 0; j < numGroups; ++j)
{
SynthGroupElement *group = (SynthGroupElement*)Groups().GetElement(j);
OSStatus err = group->Render((SInt64)inTimeStamp.mSampleTime, inNumberFrames, outputs);
if (err) return err;
}
mAbsoluteSampleFrame += inNumberFrames;
return noErr;
}