private static void WriteSamplerChunk(BinaryWriter writer, WavWriterLoopPoint[] loopPoints)
{
const int samplerDataCount = 0;
if (loopPoints == null)
{
loopPoints = new WavWriterLoopPoint[0];
}
writer.Write(Encoding.ASCII.GetBytes("smpl"));
writer.Write(36 + loopPoints.Length * 24 + samplerDataCount); //0x04 size
writer.Write(0); //0x08 manufacturer
writer.Write(0); //0x0c product
writer.Write(0); //0x10 sample period
writer.Write(0); //0x14 midi unity note
writer.Write(0); //0x18 midi pitch fraction
writer.Write(0); //0x1c smpte format
writer.Write(0); //0x20 smpte offset
writer.Write(loopPoints.Length); //number of sample loops
writer.Write(samplerDataCount); //sampler data - byte count that will follow this chunk (including the entire sample loop list)
foreach (var loopPoint in loopPoints)
{
WriteSamplerChunk_WriteLoop(writer, loopPoint);
}
}
private static void WriteSamplerChunk_WriteLoop(BinaryWriter writer, WavWriterLoopPoint wavWriterLoopPoint)
{
writer.Write(0); //id
writer.Write(0); //type, 0 = forward(normal)
writer.Write(wavWriterLoopPoint.StartSample);
writer.Write(wavWriterLoopPoint.EndSample);
writer.Write(0); //fraction
writer.Write(0); //loop count, 0 = infinite
}
