misc/libphysfs/lzma/CPP/7zip/Compress/RangeCoder/RangeCoderOpt.h
author Wuzzy <Wuzzy2@mail.ru>
Thu, 15 Mar 2018 21:15:16 +0100
changeset 13221 02bf6902eeb0
parent 12213 bb5522e88ab2
permissions -rw-r--r--
Remove Qt SVG and Qt OpenGL as hard dependencies Qt SVG is not used in the frontend (no SVGs are rendered). Neither is Qt OpenGL used. Qt OpenGL is discouraged anyway.

// 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