unsafe void Restore_samples_lpc(FlacFrame frame, int ch)
{
FlacSubframeInfo sub = frame.subframes[ch];
ulong csum = 0;
fixed(int *coefs = sub.best.coefs)
{
for (int i = sub.best.order; i > 0; i--)
{
csum += (ulong)Math.Abs(coefs[i - 1]);
}
if ((csum << sub.obits) >= 1UL << 32)
{
Lpc.Decode_residual_long(sub.best.residual, sub.samples, frame.blocksize, sub.best.order, coefs, sub.best.shift);
}
else
{
Lpc.Decode_residual(sub.best.residual, sub.samples, frame.blocksize, sub.best.order, coefs, sub.best.shift);
}
}
}
