static byte[] EncodeNGCDSP(byte[] soundData, int numSamples, short[][] coefs)
{
//Create ADPCM Data by frame
var ms = new MemoryStream();
using (var bw = new BinaryWriterX(ms, true))
using (var br = new BinaryReaderX(new MemoryStream(soundData)))
{
List <short> pcmBlock = null;
while (br.BaseStream.Position < br.BaseStream.Length)
{
//Set history values
if (pcmBlock != null)
{
var y = pcmBlock[14];
var n = pcmBlock[15];
pcmBlock = new List <short>();
pcmBlock.Add(y);
pcmBlock.Add(n);
}
else
{
pcmBlock = new List <short>();
pcmBlock.Add(0);
pcmBlock.Add(0);
}
//Get PCMBlock for frame
if (br.BaseStream.Length - br.BaseStream.Position < 28)
{
for (int i = 0; i < br.BaseStream.Length - br.BaseStream.Position; i += 2)
{
pcmBlock.Add(br.ReadInt16());
}
while (pcmBlock.Count() < 16)
{
pcmBlock.Add(0);
}
}
else
{
for (int i = 0; i < 14; i++)
{
pcmBlock.Add(br.ReadInt16());
}
}
//Convert PCMBlock to ADPCM frame
var adpcm = NGCDSPEncoder.DSPEncodeFrame(pcmBlock.ToArray(), 14, coefs);
bw.Write(adpcm);
}
}
return(ms.ToArray());
}
static short[][] GetCoefs(byte[] soundData, int numSamples)
{
return(NGCDSPEncoder.DSPCorrelateCoefs(soundData, numSamples));
}