/// <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);
}
/// <summary>
/// Extracts the bufferdata from an uncompressed wave-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 FromWav(string file)
{
return(SoundBufferData.FromWav(File.OpenRead(file)));
}
/// <summary>
/// Extracts the bufferdata from an uncompressed wave-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 FromWav(Stream file)
{
using (var reader = new BinaryReader(file))
{
// RIFF header
var signature = new string(reader.ReadChars(4));
if (signature != "RIFF")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
reader.ReadInt32(); // riffChunkSize
var format = new string(reader.ReadChars(4));
if (format != "WAVE")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
// WAVE header
var formatSignature = new string(reader.ReadChars(4));
if (formatSignature != "fmt ")
{
throw new NotSupportedException("Specified wave file is not supported.");
}
int formatChunkSize = reader.ReadInt32();
reader.ReadInt16(); // audioFormat
int numChannels = reader.ReadInt16();
int sampleRate = reader.ReadInt32();
reader.ReadInt32(); // byteRate
reader.ReadInt16(); // blockAlign
int bitsPerSample = reader.ReadInt16();
if (formatChunkSize > 16)
{
reader.ReadBytes(formatChunkSize - 16);
}
var dataSignature = new string(reader.ReadChars(4));
if (dataSignature != "data")
{
throw new NotSupportedException("Only uncompressed wave files are supported.");
}
reader.ReadInt32(); // dataChunkSize
var alFormat = SoundBufferData.getSoundFormat(numChannels, bitsPerSample);
var data = reader.ReadBytes((int)reader.BaseStream.Length);
var buffers = new List <short[]>();
int count;
int i = 0;
const int bufferSize = 16384;
while ((count = (Math.Min(data.Length, (i + 1) * bufferSize * 2) - i * bufferSize * 2) / 2) > 0)
{
var buffer = new short[bufferSize];
SoundBufferData.convertBuffer(data, buffer, count, i * bufferSize * 2);
buffers.Add(buffer);
i++;
}
return(new SoundBufferData(buffers, alFormat, sampleRate));
}
}
/// <summary>
/// Loads a new soundfile from an uncompressed wave-file.
/// </summary>
/// <param name="stream">The filestream containing the sound effect in wave-format.</param>
public static SoundFile FromWav(Stream stream)
{
return(new SoundFile(SoundBufferData.FromWav(stream)));
}
/// <summary>
/// Loads a new soundfile from an uncompressed wave-file.
/// </summary>
/// <param name="file">The filename of the uncompressed wave-file that contains the sound effect.</param>
public static SoundFile FromWav(string file)
{
return(new SoundFile(SoundBufferData.FromWav(file)));
}
private SoundFile(SoundBufferData bufferData)
{
this.buffer = SoundBuffer.FromData(bufferData);
}
public static void CastBuffer(float[] inBuffer, short[] outBuffer, int length)
{
SoundBufferData.CastBuffer(inBuffer, outBuffer, length);
}
/// <summary>
/// Creates a new soundbuffer from an uncompressed wave-file.
/// </summary>
/// <param name="file">The file to load the data from.</param>
/// <returns>A SoundBuffer object containing the data from the specified file.</returns>
public static SoundBuffer FromWav(Stream file)
{
return(SoundBuffer.FromData(SoundBufferData.FromWav(file)));
}
/// <summary>
/// Creates a new soundbuffer from preloaded sound data.
/// </summary>
/// <returns>A SoundBuffer object containing the specified sound data.</returns>
/// <param name="data">The preloaded sound data.</param>
public static SoundBuffer FromData(SoundBufferData data)
{
return(new SoundBuffer(data.Buffers, data.Format, data.SampleRate));
}
