/// <summary>
/// Extract the bufferdata from an ogg-file.
/// </summary>
/// <param name="file">The file to load the data from.</param>
/// <returns>A SoundBufferData object containing the data from the specified file.</returns>
public static SoundBufferData FromOgg(Stream file)
{
var buffers = new List <short[]>();
ALFormat format;
int sampleRate;
using (var vorbis = new VorbisReader(file, true))
{
// Save format and samplerate for playback
format = vorbis.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16;
sampleRate = vorbis.SampleRate;
var buffer = new float[16384];
int count;
while ((count = vorbis.ReadSamples(buffer, 0, buffer.Length)) > 0)
{
// Sample value range is -0.99999994f to 0.99999994f
// Samples are interleaved (chan0, chan1, chan0, chan1, etc.)
// Use the OggStreamer method to cast to the right format
var castBuffer = new short[count];
SoundBufferData.CastBuffer(buffer, castBuffer, count);
buffers.Add(castBuffer);
}
}
return(new SoundBufferData(buffers, format, sampleRate));
}
/// <summary>
/// Fills the buffers of the specified stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="bufferId">The id of the buffer to be filled.</param>
/// <returns></returns>
public bool FillBuffer(OggStream stream, int bufferId)
{
int readSamples;
lock (this.readMutex)
{
readSamples = stream.Reader.ReadSamples(this.readSampleBuffer, 0, this.BufferSize);
SoundBufferData.CastBuffer(this.readSampleBuffer, this.castBuffer, readSamples);
}
if (readSamples > 0)
{
AL.BufferData(bufferId, stream.Reader.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16, this.castBuffer,
readSamples * sizeof(short), stream.Reader.SampleRate);
ALHelper.Check();
}
return(readSamples != this.BufferSize);
}
public static void CastBuffer(float[] inBuffer, short[] outBuffer, int length)
{
SoundBufferData.CastBuffer(inBuffer, outBuffer, length);
}