public void Submit(SampleCollection samples)
{
if (!samples.IsLast)
{
if (_bytesPerSample == 1)
{
// 1-8 bit samples are unsigned:
for (var sample = 0; sample < samples.SampleCount; sample++)
{
for (var channel = 0; channel < _channels; channel++)
{
_writer.Write((byte)Math.Round(samples[channel][sample] * _multiplier + 128));
}
}
}
else
{
for (var sample = 0; sample < samples.SampleCount; sample++)
{
for (var channel = 0; channel < _channels; channel++)
{
// Optimization - BitConverter wastes memory because you can't reuse the array:
var int32Value = (int)Math.Round(samples[channel][sample] * _multiplier);
ConvertInt32ToBytes(int32Value, _buffer);
_writer.Write(_buffer, 0, _bytesPerSample);
}
}
}
}
else
{
// Finish the data and RIFF chunks:
_writer.FinishChunk();
_writer.FinishChunk();
}
}
static void WriteFmtChunk(RiffWriter writer, AudioInfo audioInfo, int bytesPerSample)
{
Contract.Requires(writer != null);
Contract.Requires(audioInfo != null);
Contract.Requires(bytesPerSample > 0);
writer.BeginChunk("fmt ", 16);
writer.Write((ushort)1);
writer.Write((ushort)audioInfo.Channels);
writer.Write((uint)audioInfo.SampleRate);
writer.Write((uint)(bytesPerSample * audioInfo.Channels * audioInfo.SampleRate));
writer.Write((ushort)(bytesPerSample * audioInfo.Channels));
writer.Write((ushort)audioInfo.BitsPerSample);
writer.FinishChunk();
}