mirror of
https://github.com/hashcat/hashcat.git
synced 2024-12-23 15:18:16 +00:00
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
|
|
||
|
|
|
||
|
|
inline unsigned int RangeCoder::GetChar()
|
||
|
|
{
|
||
|
|
return(UnpackRead->GetChar());
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void RangeCoder::InitDecoder(Unpack *UnpackRead)
|
||
|
|
{
|
||
|
|
RangeCoder::UnpackRead=UnpackRead;
|
||
|
|
|
||
|
|
low=code=0;
|
||
|
|
range=uint(-1);
|
||
|
|
for (int i=0;i < 4;i++)
|
||
|
|
code=(code << 8) | GetChar();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// (int) cast before "low" added only to suppress compiler warnings.
|
||
|
|
#define ARI_DEC_NORMALIZE(code,low,range,read) \
|
||
|
|
{ \
|
||
|
|
while ((low^(low+range))<TOP || range<BOT && ((range=-(int)low&(BOT-1)),1)) \
|
||
|
|
{ \
|
||
|
|
code=(code << 8) | read->GetChar(); \
|
||
|
|
range <<= 8; \
|
||
|
|
low <<= 8; \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline int RangeCoder::GetCurrentCount()
|
||
|
|
{
|
||
|
|
return (code-low)/(range /= SubRange.scale);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline uint RangeCoder::GetCurrentShiftCount(uint SHIFT)
|
||
|
|
{
|
||
|
|
return (code-low)/(range >>= SHIFT);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline void RangeCoder::Decode()
|
||
|
|
{
|
||
|
|
low += range*SubRange.LowCount;
|
||
|
|
range *= SubRange.HighCount-SubRange.LowCount;
|
||
|
|
}
|