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());
}
private static Pcm8SignedFormat ToPcm8Stream(BxstmStructure structure)
{
StreamInfo info = structure.StreamInfo;
return(new Pcm8FormatBuilder(structure.AudioData, info.SampleRate, true)
.WithTracks(structure.TrackInfo?.Tracks)
.WithLoop(info.Looping, info.LoopStart, info.SampleCount)
.Build() as Pcm8SignedFormat);
}
private static Pcm16Format ToPcm16Stream(BxstmStructure structure)
{
StreamInfo info = structure.StreamInfo;
short[][] channels = structure.AudioData.Select(x => x.ToShortArray(structure.Endianness)).ToArray();
return(new Pcm16FormatBuilder(channels, info.SampleRate)
.WithTracks(structure.TrackInfo?.Tracks)
.WithLoop(info.Looping, info.LoopStart, info.SampleCount)
.Build());
}
public static IAudioFormat ToAudioStream(BxstmStructure structure)
{
if (structure.PrefetchData != null)
{
// Read only the first prefetch region for now
PrefetchData pdat = structure.PrefetchData[0];
structure.StreamInfo.Looping = false;
structure.StreamInfo.SampleCount = pdat.SampleCount;
}
switch (structure.StreamInfo.Codec)
{
case NwCodec.GcAdpcm:
return(ToAdpcmStream(structure));
case NwCodec.Pcm16Bit:
return(ToPcm16Stream(structure));
case NwCodec.Pcm8Bit:
return(ToPcm8Stream(structure));
default:
return(null);
}
}
