private unsafe void ReadFlacRiceBlock(FlacBitReader reader, int nvals, int riceParameter, int *ptrDest)
{
fixed(byte *putable = FlacBitReader.UnaryTable)
{
uint mask = (1u << riceParameter) - 1;
if (riceParameter == 0)
{
for (int i = 0; i < nvals; i++)
{
*(ptrDest++) = reader.ReadUnarySigned();
}
}
else
{
for (int i = 0; i < nvals; i++)
{
uint bits = putable[reader.Cache >> 24];
uint msbs = bits;
while (bits == 8)
{
reader.SeekBits(8);
bits = putable[reader.Cache >> 24];
msbs += bits;
}
uint uval = 0;
if (riceParameter <= 16)
{
int btsk = riceParameter + (int)bits + 1;
uval = (msbs << riceParameter) | ((reader.Cache >> (32 - btsk)) & mask);
reader.SeekBits(btsk);
}
else
{
reader.SeekBits((int)(msbs & 7) + 1);
uval = (msbs << riceParameter) | ((reader.Cache >> (32 - riceParameter)));
reader.SeekBits(riceParameter);
}
*(ptrDest++) = (int)(uval >> 1 ^ -(int)(uval & 1));
}
}
}
}
private unsafe void ReadFlacRiceBlock(FlacBitReader reader, int nvals, int riceParameter, int* ptrDest)
{
fixed (byte* putable = FlacBitReader.UnaryTable)
{
uint mask = (1u << riceParameter) - 1;
if (riceParameter == 0)
{
for (int i = 0; i < nvals; i++)
{
*(ptrDest++) = reader.ReadUnarySigned();
}
}
else
{
for (int i = 0; i < nvals; i++)
{
uint bits = putable[reader.Cache >> 24];
uint msbs = bits;
while (bits == 8)
{
reader.SeekBits(8);
bits = putable[reader.Cache >> 24];
msbs += bits;
}
uint uval = 0;
if (riceParameter <= 16)
{
int btsk = riceParameter + (int)bits + 1;
uval = (msbs << riceParameter) | ((reader.Cache >> (32 - btsk)) & mask);
reader.SeekBits(btsk);
}
else
{
reader.SeekBits((int)(msbs & 7) + 1);
uval = (msbs << riceParameter) | ((reader.Cache >> (32 - riceParameter)));
reader.SeekBits(riceParameter);
}
*(ptrDest++) = (int)(uval >> 1 ^ -(int)(uval & 1));
}
}
}
}
