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This commit is contained in:
Igor Pavlov
2005-05-30 00:00:00 +00:00
committed by Kornel Lesiński
parent 8c1b5c7b7e
commit 3c510ba80b
926 changed files with 40559 additions and 23519 deletions
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50
7zip/Compress/RangeCoder/RangeCoderOpt.h
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@@ -1,43 +1,31 @@
// Compress/RangeCoder/RangeCoderOpt.h
// #pragma once
#ifndef __COMPRESS_RANGECODER_OPT_H
#define __COMPRESS_RANGECODER_OPT_H
#define RC_INIT_VAR \
UINT32 range = rangeDecoder->Range; \
UINT32 code = rangeDecoder->Code;
#define RC_INIT_VAR \
UInt32 range = rangeDecoder->Range; \
UInt32 code = rangeDecoder->Code;
#define RC_FLUSH_VAR \
rangeDecoder->Range = range; \
#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_NORMALIZE \
if (range < NCompress::NRangeCoder::kTopValue) \
{ code = (code << 8) | rangeDecoder->Stream.ReadByte(); range <<= 8; }
#define RC_GETBIT2(numMoveBits, prob, modelIndex, Action0, Action1) \
{UINT32 newBound = (range >> NCompress::NRangeCoder::kNumBitModelTotalBits) * prob; \
if (code < newBound) \
{ \
Action0; \
range = newBound; \
prob += (NCompress::NRangeCoder::kBitModelTotal - prob) >> numMoveBits; \
modelIndex <<= 1; \
} \
else \
{ \
Action1; \
range -= newBound; \
code -= newBound; \
prob -= (prob) >> numMoveBits; \
modelIndex = (modelIndex << 1) + 1; \
}} \
RC_NORMALIZE
#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, modelIndex) RC_GETBIT2(numMoveBits, prob, modelIndex, ; , ;)
#define RC_GETBIT(numMoveBits, prob, mi) RC_GETBIT2(numMoveBits, prob, mi, ; , ;)
#endif