// Compress/RangeCoder/RangeCoderOpt.h

#ifndef __COMPRESS_RANGECODER_OPT_H

#define __COMPRESS_RANGECODER_OPT_H

#define RC_INIT_VAR \

UInt32 range = rangeDecoder->Range; \

UInt32 code = rangeDecoder->Code;

#define RC_FLUSH_VAR \

rangeDecoder->Range = range; \

rangeDecoder->Code = code;

#define RC_NORMALIZE \

if (range < NCompress::NRangeCoder::kTopValue) \

{ code = (code << 8) | rangeDecoder->Stream.ReadByte(); range <<= 8; }

#define RC_GETBIT2(numMoveBits, prob, mi, A0, A1) \

{ UInt32 bound = (range >> NCompress::NRangeCoder::kNumBitModelTotalBits) * prob; \

if (code < bound) \

{ A0; range = bound; \

prob += (NCompress::NRangeCoder::kBitModelTotal - prob) >> numMoveBits; \

mi <<= 1; } \

else \

{ A1; range -= bound; code -= bound; prob -= (prob) >> numMoveBits; \

mi = (mi + mi) + 1; }} \

RC_NORMALIZE

#define RC_GETBIT(numMoveBits, prob, mi) RC_GETBIT2(numMoveBits, prob, mi, ; , ;)

#endif