public bitField littleEndianValue()
{
int shift = 0;
int len = bytes.Length;
bitField retVal = new bitField(nbits, bytes);
if (nbits <= 8)
{
return(retVal);
}
if (nbits % 8 != 0)
{
shift = (8 - nbits % 8);
}
retVal <<= shift;
for (int i = 0; i < len / 2; i++)
{
byte tmp = retVal.bytes[i];
retVal.bytes[i] = retVal.bytes[len - i - 1];
retVal.bytes[len - i - 1] = tmp;
}
retVal.bytes[0] >>= shift;
return(retVal);
}
private object getNext(Field f)
{
int bytesToRead = (int)Math.Ceiling((f.bitwidth - 8 + lastBits) / 8.0);
byte[] newBytes;
uint locLastBits = lastBits;
newBytes = new byte[bytesToRead + 1];
newBytes[0] = lastByte;
fStream.Read(newBytes, 1, bytesToRead); // TODO: do something if bytes_read < bytesToRead
if (bytesToRead > 0)
{
lastByte = newBytes[newBytes.Length - 1];
}
lastBits = (uint)f.bitwidth + lastBits - 8 * (uint)bytesToRead;
bitField retVal = new bitField(f.bitwidth);
int bitsUsed = 0;
int bitCounter = 0;
while (bitsUsed < f.bitwidth)
{
byte curByte = newBytes[bitCounter / 8];
uint curBit;
if (bitCounter < locLastBits)
{
bitCounter++;
continue;
}
curByte <<= (bitCounter % 8);
curBit = (curByte & (0x80u)) >> 7;
retVal <<= 1;
retVal |= curBit;
bitsUsed++;
bitCounter++;
}
if (!f.endianness)
{
retVal = retVal.littleEndianValue();
}
switch (f.type)
{
case "uint":
if (f.bitwidth <= 64)
{
return((ulong)retVal);
}
else
{
return(retVal);
}
case "sint":
if (f.bitwidth <= 64)
{
return((long)retVal);
}
else
{
return(retVal);
}
}
return(0);
}
