/// <summary>
/// Fills the buffer with new data.
/// </summary>
/// <param name="index">The starting index from where to fill the buffer.</param>
/// <param name="data">The new content of the buffers.</param>
public void FillBuffer(int index, SoundBufferData data)
{
if (index < 0 || index >= this.handles.Length)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
if (data.Buffers.Count > this.handles.Length)
{
throw new ArgumentException("This data does not fit in the buffer.", nameof(data));
}
for (int i = 0; i < data.Buffers.Count; i++)
{
this.fillBufferRaw((index + i) % this.handles.Length, data.Buffers[i], data.Format, data.SampleRate);
}
}
/// <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>
/// 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>
/// Fills the buffer with new data.
/// </summary>
/// <param name="data">The new content of the buffers.</param>
public void FillBuffer(SoundBufferData data)
{
this.FillBuffer(0, data);
}
/// <summary>
/// Generates a news sound buffer and fills it.
/// </summary>
/// <param name="data">The data to load the buffers with.</param>
public SoundBuffer(SoundBufferData data)
: this(data.Buffers.Count)
{
this.FillBuffer(data);
}
