diff options
Diffstat (limited to 'other-licenses/7zstub/src/7zip/Compress/RangeCoder')
5 files changed, 0 insertions, 597 deletions
diff --git a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoder.h b/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoder.h deleted file mode 100644 index 9828bc4b9..000000000 --- a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoder.h +++ /dev/null @@ -1,205 +0,0 @@ -// Compress/RangeCoder/RangeCoder.h
-
-#ifndef __COMPRESS_RANGECODER_H
-#define __COMPRESS_RANGECODER_H
-
-#include "../../Common/InBuffer.h"
-#include "../../Common/OutBuffer.h"
-
-namespace NCompress {
-namespace NRangeCoder {
-
-const int kNumTopBits = 24;
-const UInt32 kTopValue = (1 << kNumTopBits);
-
-class CEncoder
-{
- UInt32 _cacheSize;
- Byte _cache;
-public:
- UInt64 Low;
- UInt32 Range;
- COutBuffer Stream;
- bool Create(UInt32 bufferSize) { return Stream.Create(bufferSize); }
-
- void SetStream(ISequentialOutStream *stream) { Stream.SetStream(stream); }
- void Init()
- {
- Stream.Init();
- Low = 0;
- Range = 0xFFFFFFFF;
- _cacheSize = 1;
- _cache = 0;
- }
-
- void FlushData()
- {
- // Low += 1;
- for(int i = 0; i < 5; i++)
- ShiftLow();
- }
-
- HRESULT FlushStream() { return Stream.Flush(); }
-
- void ReleaseStream() { Stream.ReleaseStream(); }
-
- void Encode(UInt32 start, UInt32 size, UInt32 total)
- {
- Low += start * (Range /= total);
- Range *= size;
- while (Range < kTopValue)
- {
- Range <<= 8;
- ShiftLow();
- }
- }
-
- void ShiftLow()
- {
- if ((UInt32)Low < (UInt32)0xFF000000 || (int)(Low >> 32) != 0)
- {
- Byte temp = _cache;
- do
- {
- Stream.WriteByte((Byte)(temp + (Byte)(Low >> 32)));
- temp = 0xFF;
- }
- while(--_cacheSize != 0);
- _cache = (Byte)((UInt32)Low >> 24);
- }
- _cacheSize++;
- Low = (UInt32)Low << 8;
- }
-
- void EncodeDirectBits(UInt32 value, int numTotalBits)
- {
- for (int i = numTotalBits - 1; i >= 0; i--)
- {
- Range >>= 1;
- if (((value >> i) & 1) == 1)
- Low += Range;
- if (Range < kTopValue)
- {
- Range <<= 8;
- ShiftLow();
- }
- }
- }
-
- void EncodeBit(UInt32 size0, UInt32 numTotalBits, UInt32 symbol)
- {
- UInt32 newBound = (Range >> numTotalBits) * size0;
- if (symbol == 0)
- Range = newBound;
- else
- {
- Low += newBound;
- Range -= newBound;
- }
- while (Range < kTopValue)
- {
- Range <<= 8;
- ShiftLow();
- }
- }
-
- UInt64 GetProcessedSize() { return Stream.GetProcessedSize() + _cacheSize + 4; }
-};
-
-class CDecoder
-{
-public:
- CInBuffer Stream;
- UInt32 Range;
- UInt32 Code;
- bool Create(UInt32 bufferSize) { return Stream.Create(bufferSize); }
-
- void Normalize()
- {
- while (Range < kTopValue)
- {
- Code = (Code << 8) | Stream.ReadByte();
- Range <<= 8;
- }
- }
-
- void SetStream(ISequentialInStream *stream) { Stream.SetStream(stream); }
- void Init()
- {
- Stream.Init();
- Code = 0;
- Range = 0xFFFFFFFF;
- for(int i = 0; i < 5; i++)
- Code = (Code << 8) | Stream.ReadByte();
- }
-
- void ReleaseStream() { Stream.ReleaseStream(); }
-
- UInt32 GetThreshold(UInt32 total)
- {
- return (Code) / ( Range /= total);
- }
-
- void Decode(UInt32 start, UInt32 size)
- {
- Code -= start * Range;
- Range *= size;
- Normalize();
- }
-
- UInt32 DecodeDirectBits(int numTotalBits)
- {
- UInt32 range = Range;
- UInt32 code = Code;
- UInt32 result = 0;
- for (int i = numTotalBits; i != 0; i--)
- {
- range >>= 1;
- /*
- result <<= 1;
- if (code >= range)
- {
- code -= range;
- result |= 1;
- }
- */
- UInt32 t = (code - range) >> 31;
- code -= range & (t - 1);
- result = (result << 1) | (1 - t);
-
- if (range < kTopValue)
- {
- code = (code << 8) | Stream.ReadByte();
- range <<= 8;
- }
- }
- Range = range;
- Code = code;
- return result;
- }
-
- UInt32 DecodeBit(UInt32 size0, UInt32 numTotalBits)
- {
- UInt32 newBound = (Range >> numTotalBits) * size0;
- UInt32 symbol;
- if (Code < newBound)
- {
- symbol = 0;
- Range = newBound;
- }
- else
- {
- symbol = 1;
- Code -= newBound;
- Range -= newBound;
- }
- Normalize();
- return symbol;
- }
-
- UInt64 GetProcessedSize() {return Stream.GetProcessedSize(); }
-};
-
-}}
-
-#endif
diff --git a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.cpp b/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.cpp deleted file mode 100644 index 8d273c8f9..000000000 --- a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.cpp +++ /dev/null @@ -1,80 +0,0 @@ -// Compress/RangeCoder/RangeCoderBit.cpp
-
-#include "StdAfx.h"
-
-#include "RangeCoderBit.h"
-
-namespace NCompress {
-namespace NRangeCoder {
-
-UInt32 CPriceTables::ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
-static CPriceTables g_PriceTables;
-
-CPriceTables::CPriceTables() { Init(); }
-
-void CPriceTables::Init()
-{
- const int kNumBits = (kNumBitModelTotalBits - kNumMoveReducingBits);
- for(int i = kNumBits - 1; i >= 0; i--)
- {
- UInt32 start = 1 << (kNumBits - i - 1);
- UInt32 end = 1 << (kNumBits - i);
- for (UInt32 j = start; j < end; j++)
- ProbPrices[j] = (i << kNumBitPriceShiftBits) +
- (((end - j) << kNumBitPriceShiftBits) >> (kNumBits - i - 1));
- }
-
- /*
- // simplest: bad solution
- for(UInt32 i = 1; i < (kBitModelTotal >> kNumMoveReducingBits) - 1; i++)
- ProbPrices[i] = kBitPrice;
- */
-
- /*
- const double kDummyMultMid = (1.0 / kBitPrice) / 2;
- const double kDummyMultMid = 0;
- // float solution
- double ln2 = log(double(2));
- double lnAll = log(double(kBitModelTotal >> kNumMoveReducingBits));
- for(UInt32 i = 1; i < (kBitModelTotal >> kNumMoveReducingBits) - 1; i++)
- ProbPrices[i] = UInt32((fabs(lnAll - log(double(i))) / ln2 + kDummyMultMid) * kBitPrice);
- */
-
- /*
- // experimental, slow, solution:
- for(UInt32 i = 1; i < (kBitModelTotal >> kNumMoveReducingBits) - 1; i++)
- {
- const int kCyclesBits = 5;
- const UInt32 kCycles = (1 << kCyclesBits);
-
- UInt32 range = UInt32(-1);
- UInt32 bitCount = 0;
- for (UInt32 j = 0; j < kCycles; j++)
- {
- range >>= (kNumBitModelTotalBits - kNumMoveReducingBits);
- range *= i;
- while(range < (1 << 31))
- {
- range <<= 1;
- bitCount++;
- }
- }
- bitCount <<= kNumBitPriceShiftBits;
- range -= (1 << 31);
- for (int k = kNumBitPriceShiftBits - 1; k >= 0; k--)
- {
- range <<= 1;
- if (range > (1 << 31))
- {
- bitCount += (1 << k);
- range -= (1 << 31);
- }
- }
- ProbPrices[i] = (bitCount
- // + (1 << (kCyclesBits - 1))
- ) >> kCyclesBits;
- }
- */
-}
-
-}}
diff --git a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.h b/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.h deleted file mode 100644 index 64538e687..000000000 --- a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBit.h +++ /dev/null @@ -1,120 +0,0 @@ -// Compress/RangeCoder/RangeCoderBit.h
-
-#ifndef __COMPRESS_RANGECODER_BIT_H
-#define __COMPRESS_RANGECODER_BIT_H
-
-#include "RangeCoder.h"
-
-namespace NCompress {
-namespace NRangeCoder {
-
-const int kNumBitModelTotalBits = 11;
-const UInt32 kBitModelTotal = (1 << kNumBitModelTotalBits);
-
-const int kNumMoveReducingBits = 2;
-
-const int kNumBitPriceShiftBits = 6;
-const UInt32 kBitPrice = 1 << kNumBitPriceShiftBits;
-
-class CPriceTables
-{
-public:
- static UInt32 ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
- static void Init();
- CPriceTables();
-};
-
-template <int numMoveBits>
-class CBitModel
-{
-public:
- UInt32 Prob;
- void UpdateModel(UInt32 symbol)
- {
- /*
- Prob -= (Prob + ((symbol - 1) & ((1 << numMoveBits) - 1))) >> numMoveBits;
- Prob += (1 - symbol) << (kNumBitModelTotalBits - numMoveBits);
- */
- if (symbol == 0)
- Prob += (kBitModelTotal - Prob) >> numMoveBits;
- else
- Prob -= (Prob) >> numMoveBits;
- }
-public:
- void Init() { Prob = kBitModelTotal / 2; }
-};
-
-template <int numMoveBits>
-class CBitEncoder: public CBitModel<numMoveBits>
-{
-public:
- void Encode(CEncoder *encoder, UInt32 symbol)
- {
- /*
- encoder->EncodeBit(this->Prob, kNumBitModelTotalBits, symbol);
- this->UpdateModel(symbol);
- */
- UInt32 newBound = (encoder->Range >> kNumBitModelTotalBits) * this->Prob;
- if (symbol == 0)
- {
- encoder->Range = newBound;
- this->Prob += (kBitModelTotal - this->Prob) >> numMoveBits;
- }
- else
- {
- encoder->Low += newBound;
- encoder->Range -= newBound;
- this->Prob -= (this->Prob) >> numMoveBits;
- }
- if (encoder->Range < kTopValue)
- {
- encoder->Range <<= 8;
- encoder->ShiftLow();
- }
- }
- UInt32 GetPrice(UInt32 symbol) const
- {
- return CPriceTables::ProbPrices[
- (((this->Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
- }
- UInt32 GetPrice0() const { return CPriceTables::ProbPrices[this->Prob >> kNumMoveReducingBits]; }
- UInt32 GetPrice1() const { return CPriceTables::ProbPrices[(kBitModelTotal - this->Prob) >> kNumMoveReducingBits]; }
-};
-
-
-template <int numMoveBits>
-class CBitDecoder: public CBitModel<numMoveBits>
-{
-public:
- UInt32 Decode(CDecoder *decoder)
- {
- UInt32 newBound = (decoder->Range >> kNumBitModelTotalBits) * this->Prob;
- if (decoder->Code < newBound)
- {
- decoder->Range = newBound;
- this->Prob += (kBitModelTotal - this->Prob) >> numMoveBits;
- if (decoder->Range < kTopValue)
- {
- decoder->Code = (decoder->Code << 8) | decoder->Stream.ReadByte();
- decoder->Range <<= 8;
- }
- return 0;
- }
- else
- {
- decoder->Range -= newBound;
- decoder->Code -= newBound;
- this->Prob -= (this->Prob) >> numMoveBits;
- if (decoder->Range < kTopValue)
- {
- decoder->Code = (decoder->Code << 8) | decoder->Stream.ReadByte();
- decoder->Range <<= 8;
- }
- return 1;
- }
- }
-};
-
-}}
-
-#endif
diff --git a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBitTree.h b/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBitTree.h deleted file mode 100644 index 1fa023f3b..000000000 --- a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderBitTree.h +++ /dev/null @@ -1,161 +0,0 @@ -// Compress/RangeCoder/RangeCoderBitTree.h
-
-#ifndef __COMPRESS_RANGECODER_BIT_TREE_H
-#define __COMPRESS_RANGECODER_BIT_TREE_H
-
-#include "RangeCoderBit.h"
-#include "RangeCoderOpt.h"
-
-namespace NCompress {
-namespace NRangeCoder {
-
-template <int numMoveBits, int NumBitLevels>
-class CBitTreeEncoder
-{
- CBitEncoder<numMoveBits> Models[1 << NumBitLevels];
-public:
- void Init()
- {
- for(UInt32 i = 1; i < (1 << NumBitLevels); i++)
- Models[i].Init();
- }
- void Encode(CEncoder *rangeEncoder, UInt32 symbol)
- {
- UInt32 modelIndex = 1;
- for (int bitIndex = NumBitLevels; bitIndex != 0 ;)
- {
- bitIndex--;
- UInt32 bit = (symbol >> bitIndex) & 1;
- Models[modelIndex].Encode(rangeEncoder, bit);
- modelIndex = (modelIndex << 1) | bit;
- }
- };
- void ReverseEncode(CEncoder *rangeEncoder, UInt32 symbol)
- {
- UInt32 modelIndex = 1;
- for (int i = 0; i < NumBitLevels; i++)
- {
- UInt32 bit = symbol & 1;
- Models[modelIndex].Encode(rangeEncoder, bit);
- modelIndex = (modelIndex << 1) | bit;
- symbol >>= 1;
- }
- }
- UInt32 GetPrice(UInt32 symbol) const
- {
- symbol |= (1 << NumBitLevels);
- UInt32 price = 0;
- while (symbol != 1)
- {
- price += Models[symbol >> 1].GetPrice(symbol & 1);
- symbol >>= 1;
- }
- return price;
- }
- UInt32 ReverseGetPrice(UInt32 symbol) const
- {
- UInt32 price = 0;
- UInt32 modelIndex = 1;
- for (int i = NumBitLevels; i != 0; i--)
- {
- UInt32 bit = symbol & 1;
- symbol >>= 1;
- price += Models[modelIndex].GetPrice(bit);
- modelIndex = (modelIndex << 1) | bit;
- }
- return price;
- }
-};
-
-template <int numMoveBits, int NumBitLevels>
-class CBitTreeDecoder
-{
- CBitDecoder<numMoveBits> Models[1 << NumBitLevels];
-public:
- void Init()
- {
- for(UInt32 i = 1; i < (1 << NumBitLevels); i++)
- Models[i].Init();
- }
- UInt32 Decode(CDecoder *rangeDecoder)
- {
- UInt32 modelIndex = 1;
- RC_INIT_VAR
- for(int bitIndex = NumBitLevels; bitIndex != 0; bitIndex--)
- {
- // modelIndex = (modelIndex << 1) + Models[modelIndex].Decode(rangeDecoder);
- RC_GETBIT(numMoveBits, Models[modelIndex].Prob, modelIndex)
- }
- RC_FLUSH_VAR
- return modelIndex - (1 << NumBitLevels);
- };
- UInt32 ReverseDecode(CDecoder *rangeDecoder)
- {
- UInt32 modelIndex = 1;
- UInt32 symbol = 0;
- RC_INIT_VAR
- for(int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
- {
- // UInt32 bit = Models[modelIndex].Decode(rangeDecoder);
- // modelIndex <<= 1;
- // modelIndex += bit;
- // symbol |= (bit << bitIndex);
- RC_GETBIT2(numMoveBits, Models[modelIndex].Prob, modelIndex, ; , symbol |= (1 << bitIndex))
- }
- RC_FLUSH_VAR
- return symbol;
- }
-};
-
-template <int numMoveBits>
-void ReverseBitTreeEncode(CBitEncoder<numMoveBits> *Models,
- CEncoder *rangeEncoder, int NumBitLevels, UInt32 symbol)
-{
- UInt32 modelIndex = 1;
- for (int i = 0; i < NumBitLevels; i++)
- {
- UInt32 bit = symbol & 1;
- Models[modelIndex].Encode(rangeEncoder, bit);
- modelIndex = (modelIndex << 1) | bit;
- symbol >>= 1;
- }
-}
-
-template <int numMoveBits>
-UInt32 ReverseBitTreeGetPrice(CBitEncoder<numMoveBits> *Models,
- UInt32 NumBitLevels, UInt32 symbol)
-{
- UInt32 price = 0;
- UInt32 modelIndex = 1;
- for (int i = NumBitLevels; i != 0; i--)
- {
- UInt32 bit = symbol & 1;
- symbol >>= 1;
- price += Models[modelIndex].GetPrice(bit);
- modelIndex = (modelIndex << 1) | bit;
- }
- return price;
-}
-
-template <int numMoveBits>
-UInt32 ReverseBitTreeDecode(CBitDecoder<numMoveBits> *Models,
- CDecoder *rangeDecoder, int NumBitLevels)
-{
- UInt32 modelIndex = 1;
- UInt32 symbol = 0;
- RC_INIT_VAR
- for(int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
- {
- // UInt32 bit = Models[modelIndex].Decode(rangeDecoder);
- // modelIndex <<= 1;
- // modelIndex += bit;
- // symbol |= (bit << bitIndex);
- RC_GETBIT2(numMoveBits, Models[modelIndex].Prob, modelIndex, ; , symbol |= (1 << bitIndex))
- }
- RC_FLUSH_VAR
- return symbol;
-}
-
-}}
-
-#endif
diff --git a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderOpt.h b/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderOpt.h deleted file mode 100644 index 829fc83d7..000000000 --- a/other-licenses/7zstub/src/7zip/Compress/RangeCoder/RangeCoderOpt.h +++ /dev/null @@ -1,31 +0,0 @@ -// 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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