Serialize Frostbite3 SoundWaveAsset chunks into per-channel WAVs

FrostySoundDataEditor.cs

// Call this instead of SoundExportMenuItem_Export
private void SoundExportMenuItem_ExportChannels(IList tracks, String baseFilename)
{
    // Assume common metadata, derive with first track
    SoundDataTrack firstTrack = (SoundDataTrack)tracks[0];
    int channelCount = firstTrack.ChannelCount;
    WAV.WAVFormatChunk fmt = new WAV.WAVFormatChunk(WAV.WAVFormatChunk.DataFormats.WAVE_FORMAT_PCM, 1, (uint)firstTrack.SampleRate, (uint)(2 * firstTrack.SampleRate), (ushort)2, 16);

    FrostyTaskWindow.Show("Exporting Sound", "", task =>
    {
        for (int channelIndex = 0; channelIndex < channelCount; channelIndex++)
        {
            String channelFilename = GetChannelFilename(baseFilename, channelIndex);
            List<WAV.WAVDataFrame> frames = new List<WAV.WAVDataFrame>();
            for (int trackIndex = 0; trackIndex < tracks.Count; trackIndex++)
            {
                SoundDataTrack thisTrack = (SoundDataTrack) tracks[trackIndex];
                int frameCount = thisTrack.Samples.Length / thisTrack.ChannelCount;
                for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
                {
                    // write frame
                    WAV.WAV16BitDataFrame frame = new WAV.WAV16BitDataFrame((ushort)1);
                    frame.Data[0] = thisTrack.Samples[frameIndex * thisTrack.ChannelCount + channelIndex];                            
                    frames.Add(frame);
                }
            }
            WAV.WAVDataChunk data = new WAV.WAVDataChunk(fmt, frames);
            WAV.RIFFMainChunk main = new WAV.RIFFMainChunk(new WAV.RIFFChunkHeader(0, new byte[] { 0x52, 0x49, 0x46, 0x46 }, 0), new byte[] { 0x57, 0x41, 0x56, 0x45 });

            using (FileStream stream = new FileStream(channelFilename, FileMode.Create))
            using (BinaryWriter writer = new BinaryWriter(stream))
            {
                main.Write(writer, new List<WAV.IRIFFChunk>(new WAV.IRIFFChunk[] { fmt, data }));
            }
        }
    });
}

// Give each WAV a name (assumes input has at most 4 channels)
private String GetChannelFilename(String baseFilename, int channelIndex) 
{
    String channelSuffix = null;
    if (channelIndex == 0)
    {
        channelSuffix = "front-left";
    } else if (channelIndex == 1)
    {
        channelSuffix = "front-right";
    } else if (channelIndex == 2)
    {
        channelSuffix = "back-left";
    } else if (channelIndex == 3)
    {
        channelSuffix = "back-right";
    }
            
    return baseFilename.Replace(".wav", "-" + channelSuffix + ".wav");
}