static void DecodeStreamAdpcm(aBinaryReader reader, aBinaryWriter writer, int sampleCount)
{
var left = new short[16];
int left_last = 0, left_penult = 0;
var right = new short[16];
int right_last = 0, right_penult = 0;
for (var i = 0; i < sampleCount; i += 16)
{
Waveform.Adpcm4toPcm16(reader.Read8s(9), left, ref left_last, ref left_penult);
Waveform.Adpcm4toPcm16(reader.Read8s(9), right, ref right_last, ref right_penult);
for (var j = 0; j < 16 && (i + j) < sampleCount; ++j)
{
writer.WriteS16(left[j]);
writer.WriteS16(right[j]);
}
if ((i % cMessageInterval) == 0 || (i + 16) >= sampleCount)
{
mareep.WriteMessage("\rSamples encoded: {0}/{1}", System.Math.Min((i + 16), sampleCount), sampleCount);
}
}
}