/// <summary>
/// Releases all resources used by the <see cref="OggReader"/>.
/// </summary>
public override void Dispose()
{
_reader.Dispose();
}
public ISoundData Decode(Stream stream)
{
VorbisReader reader = null;
try
{
reader = new VorbisReader (stream, false);
int channels = reader.Channels;
const int BITS_PER_SAMPLE = 16;
int sampleRate = reader.SampleRate;
//Code from: https://github.com/AdamsLair/duality/blob/a911c46b6bc830c05d3bb1202f8e7060543eaefa/Duality/Audio/OggVorbis.cs
List<float[]> allBuffers = new List<float[]>();
bool eof = false;
int totalSamplesRead = 0;
int dataRead = 0;
while (!eof)
{
float[] buffer = new float[DEFAULT_BUFFER_SIZE];
int bufferSamplesRead = 0;
while(bufferSamplesRead < buffer.Length)
{
int samplesRead;
lock (_readMutex)
{
samplesRead = reader.ReadSamples(buffer, dataRead, buffer.Length - dataRead);
}
if (samplesRead > 0)
{
bufferSamplesRead += samplesRead;
}
else
{
eof = true;
break;
}
}
allBuffers.Add(buffer);
totalSamplesRead += bufferSamplesRead;
}
if (totalSamplesRead > 0)
{
short[] data = new short[totalSamplesRead];
int offset = 0;
for (int i = 0; i < allBuffers.Count; i++)
{
int len = Math.Min(totalSamplesRead - offset, allBuffers[i].Length);
castBuffer(allBuffers[i], data, offset, len);
offset += len;
}
return new SoundData(channels, BITS_PER_SAMPLE, sampleRate, data, Marshal.SizeOf(typeof(short)) * data.Length);
}
else
{
Debug.WriteLine("OggDecoder: No samples found in ogg file");
return null;
}
}
catch (InvalidDataException e)
{
Debug.WriteLine("OggDecoder: Failed to read ogg. " + e.ToString());
return null;
}
finally
{
if (reader != null) reader.Dispose();
}
}