private static GcAdpcmFormat ToAdpcmStream(BxstmStructure structure)
{
StreamInfo streamInfo = structure.StreamInfo;
List <GcAdpcmChannelInfo> channelInfo = structure.ChannelInfo.Channels;
var channels = new GcAdpcmChannel[streamInfo.ChannelCount];
for (int c = 0; c < channels.Length; c++)
{
var channelBuilder = new GcAdpcmChannelBuilder(structure.AudioData[c], channelInfo[c].Coefs, streamInfo.SampleCount)
{
Gain = channelInfo[c].Gain,
StartContext = channelInfo[c].Start
};
channelBuilder.WithLoop(streamInfo.Looping, streamInfo.LoopStart, streamInfo.SampleCount)
.WithLoopContext(streamInfo.LoopStart, channelInfo[c].Loop.PredScale,
channelInfo[c].Loop.Hist1, channelInfo[c].Loop.Hist2);
if (structure.SeekTable != null)
{
channelBuilder.WithSeekTable(structure.SeekTable[c], streamInfo.SamplesPerSeekTableEntry);
}
channels[c] = channelBuilder.Build();
}
return(new GcAdpcmFormatBuilder(channels, streamInfo.SampleRate)
.WithTracks(structure.TrackInfo?.Tracks)
.WithLoop(streamInfo.Looping, streamInfo.LoopStart, streamInfo.SampleCount)
.Build());
}
public static GcAdpcmFormat GenerateAdpcmEmpty(int sampleCount, int channelCount, int sampleRate, int samplesPerSeekTableEntry = 0x3800)
{
var channels = new GcAdpcmChannel[channelCount];
for (int i = 0; i < channelCount; i++)
{
var builder = new GcAdpcmChannelBuilder(new byte[GcAdpcmMath.SampleCountToByteCount(sampleCount)], new short[16], sampleCount);
builder.WithSeekTable(new short[sampleCount.DivideByRoundUp(samplesPerSeekTableEntry) * 2], samplesPerSeekTableEntry, true);
channels[i] = builder.Build();
}
var adpcm = new GcAdpcmFormat(channels, sampleRate);
return(adpcm);
}