Method loadBuffer

src/cinder/audio/Source.cpp:150–185

}

BufferRef SourceFile::loadBuffer()
{
	seek( 0 );

	BufferRef result = make_shared<Buffer>( mNumFrames, getNumChannels() );

	if( mConverter ) {
		// TODO: need BufferView's in order to reduce number of copies
		Buffer converterDestBuffer( mConverter->getDestMaxFramesPerBlock(), getNumChannels() );
		size_t readCount = 0;
		while( true ) {
			size_t framesNeeded = std::min( getMaxFramesPerRead(), mFileNumFrames - readCount );
			if( framesNeeded == 0 )
				break;

			// make sourceBuffer num frames match outNumFrames so that Converter doesn't think it has more
			if( framesNeeded != mConverterReadBuffer.getNumFrames() )
				mConverterReadBuffer.setNumFrames( framesNeeded );

			size_t outNumFrames = performRead( &mConverterReadBuffer, 0, framesNeeded );
			CI_ASSERT( outNumFrames == framesNeeded );

			pair<size_t, size_t> count = mConverter->convert( &mConverterReadBuffer, &converterDestBuffer );
			result->copyOffset( converterDestBuffer, count.second, mReadPos, 0 );

			readCount += outNumFrames;
			mReadPos += count.second;
		}
	}
	else {
		size_t readCount = performRead( result.get(), 0, mNumFrames );
		mReadPos = readCount;
	}

	return result;
}

void SourceFile::seek( size_t readPositionFrames )
{