Method readImpl

src/cinder/audio/SamplePlayerNode.cpp:422–449

}

void FilePlayerNode::readImpl()
{
	size_t readPos = mReadPos;
	size_t availableWrite = mRingBuffers[0].getAvailableWrite();
	size_t readEnd = mLoop ? mLoopEnd.load() : mNumFrames;
	size_t numFramesToRead = readEnd < readPos ? 0 : min( availableWrite, readEnd - readPos );

	if( ! numFramesToRead ) {
		mLastOverrun = getContext()->getNumProcessedFrames();
		return;
	}

	// safety check that the SourceFile is on the correct read position, which could happen if two users are simultaneously reading from the same file.
	if( readPos != mSourceFile->getReadPosition() )
		mSourceFile->seek( readPos );

	mIoBuffer.setNumFrames( numFramesToRead );

	size_t numRead = mSourceFile->read( &mIoBuffer );
	mReadPos += numRead;

	for( size_t ch = 0; ch < getNumChannels(); ch++ ) {
		if( ! mRingBuffers[ch].write( mIoBuffer.getChannel( ch ), numRead ) ) {
			mLastOverrun = getContext()->getNumProcessedFrames();
			return;
		}
	}
}

void FilePlayerNode::seekImpl( size_t readPos )
{