private static int getNumber(int nBits, sbyte[] buf, int bufPtr, int inc, BoolObject flag, IntObject mask, IntObject buffer, sbyte[] @in, IntObject nextIn)
{
// Extract and return a number (consisting of n_bits bits) from in stream
IntObject number = new IntObject(1);
if (nBits >= 3)
{
nextBit(buf, bufPtr + 3 * inc, number, mask, mask, buffer, @in, nextIn);
if (nBits >= 4)
{
nextBit(buf, bufPtr + 3 * inc, number, mask, mask, buffer, @in, nextIn);
if (nBits >= 5)
{
fillBuffer(mask, mask, buffer, @in, nextIn);
for (; nBits >= 5; nBits--)
{
number.Value = number.Value << 1;
mask.Value = (int)((uint)mask.Value >> 1);
if (u32(buffer.Value) < u32(mask.Value))
{
number.incr();
}
else
{
buffer.sub(mask.Value);
}
}
}
}
}
flag.Value = nextBit(buf, bufPtr, number, mask, mask, buffer, @in, nextIn);
if (nBits >= 1)
{
nextBit(buf, bufPtr + inc, number, mask, mask, buffer, @in, nextIn);
if (nBits >= 2)
{
nextBit(buf, bufPtr + 2 * inc, number, mask, mask, buffer, @in, nextIn);
}
}
return(number.Value);
}
private static bool nextBit(sbyte[] buf, int bufPtr1, IntObject number, IntObject testMask, IntObject mask, IntObject buffer, sbyte[] @in, IntObject nextIn)
{
fillBuffer(testMask, mask, buffer, @in, nextIn);
int value = ((int)((uint)mask.Value >> 8)) * u8(buf[bufPtr1]);
if (testMask != mask)
{
testMask.Value = value;
}
buf[bufPtr1] -= (sbyte)(u8(buf[bufPtr1]) >> 3);
number.Value = number.Value << 1;
if (u32(buffer.Value) < u32(value))
{
mask.Value = value;
buf[bufPtr1] += 31;
number.incr();
return(true);
}
buffer.sub(value);
mask.sub(value);
return(false);
}