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- // 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
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