// Returns how many sample frames were actually read.
public int ReadSampleFrames(byte[] buffer, int offsetInSampleFrames, int sampleFrameCount)
{
Debug.Assert(isOpen);
int offsetInBytes = AudioUtils.SampleFramesToBytes(offsetInSampleFrames, channelCount, bitDepth);
int requestedByteCount = AudioUtils.SampleFramesToBytes(sampleFrameCount, channelCount, bitDepth);
int bytesRead = 0;
int bytesReturned;
do
{
bytesReturned = audioStream.Read(buffer, offsetInBytes + bytesRead, requestedByteCount - bytesRead);
bytesRead += bytesReturned;
} while (bytesReturned > 0);
Debug.Assert((bytesRead % AudioUtils.SampleFramesToBytes(1, channelCount, bitDepth)) == 0);
// Stereoize audio and fix MP3Sharp's strange behavior.
if (audioStream.ChannelCount == 1)
{
int iEnd = offsetInBytes + bytesRead;
for (int i = offsetInBytes; i < iEnd; i += 4)
{
buffer[i + 2] = buffer[i];
buffer[i + 3] = buffer[i + 1];
}
}
int sampleFramesRead = AudioUtils.BytesToSampleFrames(bytesRead, channelCount, bitDepth);
return(sampleFramesRead);
}
