void CAAudioFileReader::ReadBuffer(FileReadBuffer *b)
{
b->SetEmpty();
CABufferList *ioMemory = b->GetBufferList();
CABufferList *fileBuffers = GetBufferList();
fileBuffers->SetFrom(ioMemory);
UInt32 nFrames = GetBufferSizeFrames();
SInt64 curFrame = mFile->Tell();
mFile->Read(nFrames, &fileBuffers->GetModifiableBufferList());
b->UpdateAfterRead(curFrame, nFrames);
}
void CAAudioFileRecorder::SetFile(const FSRef &parentFSRef, CFStringRef filename, AudioFileTypeID filetype, const CAStreamBasicDescription &dataFormat, const CAAudioChannelLayout *layout)
{
delete mAudioInputPtrs; mAudioInputPtrs = NULL;
CAStreamBasicDescription fileDataFormat = dataFormat;
if (fileDataFormat.mSampleRate == 0.)
fileDataFormat.mSampleRate = mInputDataFormat.mSampleRate;
CAAudioFileWriter::SetFile(parentFSRef, filename, filetype, fileDataFormat, layout);
const CAStreamBasicDescription &fmt = GetFile().GetClientDataFormat();
XThrowIfError(AudioUnitSetProperty(
mInputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Output,
1,
(void *)&fmt,
sizeof(AudioStreamBasicDescription)), "set audio input format");
GetFile().SetIOBufferSizeBytes(GetBufferSizeFrames() * fmt.mBytesPerFrame);
mAudioInputPtrs = CABufferList::New("audio input ptrs", fmt);
}
