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gzdoom-gles/libraries/lzma/C/Ppmd.h
Christoph Oelckers 040cb17370 - moved third party library projects to a subfolder to reduce size of the root. 
# Conflicts:
#	CMakeLists.txt
#	libraries/glslang/OGLCompilersDLL/CMakeLists.txt
#	libraries/glslang/OGLCompilersDLL/InitializeDll.cpp
#	libraries/glslang/OGLCompilersDLL/InitializeDll.h
#	libraries/glslang/glslang/CMakeLists.txt
#	libraries/glslang/glslang/GenericCodeGen/CodeGen.cpp
#	libraries/glslang/glslang/GenericCodeGen/Link.cpp
#	libraries/glslang/glslang/Include/BaseTypes.h
#	libraries/glslang/glslang/Include/Common.h
#	libraries/glslang/glslang/Include/ConstantUnion.h
#	libraries/glslang/glslang/Include/InfoSink.h
#	libraries/glslang/glslang/Include/InitializeGlobals.h
#	libraries/glslang/glslang/Include/PoolAlloc.h
#	libraries/glslang/glslang/Include/ResourceLimits.h
#	libraries/glslang/glslang/Include/ShHandle.h
#	libraries/glslang/glslang/Include/Types.h
#	libraries/glslang/glslang/Include/arrays.h
#	libraries/glslang/glslang/Include/intermediate.h
#	libraries/glslang/glslang/Include/revision.h
#	libraries/glslang/glslang/Include/revision.template
#	libraries/glslang/glslang/MachineIndependent/Constant.cpp
#	libraries/glslang/glslang/MachineIndependent/InfoSink.cpp
#	libraries/glslang/glslang/MachineIndependent/Initialize.cpp
#	libraries/glslang/glslang/MachineIndependent/Initialize.h
#	libraries/glslang/glslang/MachineIndependent/IntermTraverse.cpp
#	libraries/glslang/glslang/MachineIndependent/Intermediate.cpp
#	libraries/glslang/glslang/MachineIndependent/LiveTraverser.h
#	libraries/glslang/glslang/MachineIndependent/ParseContextBase.cpp
#	libraries/glslang/glslang/MachineIndependent/ParseHelper.cpp
#	libraries/glslang/glslang/MachineIndependent/ParseHelper.h
#	libraries/glslang/glslang/MachineIndependent/PoolAlloc.cpp
#	libraries/glslang/glslang/MachineIndependent/RemoveTree.cpp
#	libraries/glslang/glslang/MachineIndependent/RemoveTree.h
#	libraries/glslang/glslang/MachineIndependent/Scan.cpp
#	libraries/glslang/glslang/MachineIndependent/Scan.h
#	libraries/glslang/glslang/MachineIndependent/ScanContext.h
#	libraries/glslang/glslang/MachineIndependent/ShaderLang.cpp
#	libraries/glslang/glslang/MachineIndependent/SymbolTable.cpp
#	libraries/glslang/glslang/MachineIndependent/SymbolTable.h
#	libraries/glslang/glslang/MachineIndependent/Versions.cpp
#	libraries/glslang/glslang/MachineIndependent/Versions.h
#	libraries/glslang/glslang/MachineIndependent/attribute.cpp
#	libraries/glslang/glslang/MachineIndependent/attribute.h
#	libraries/glslang/glslang/MachineIndependent/gl_types.h
#	libraries/glslang/glslang/MachineIndependent/glslang.y
#	libraries/glslang/glslang/MachineIndependent/glslang_tab.cpp
#	libraries/glslang/glslang/MachineIndependent/glslang_tab.cpp.h
#	libraries/glslang/glslang/MachineIndependent/intermOut.cpp
#	libraries/glslang/glslang/MachineIndependent/iomapper.cpp
#	libraries/glslang/glslang/MachineIndependent/iomapper.h
#	libraries/glslang/glslang/MachineIndependent/limits.cpp
#	libraries/glslang/glslang/MachineIndependent/linkValidate.cpp
#	libraries/glslang/glslang/MachineIndependent/localintermediate.h
#	libraries/glslang/glslang/MachineIndependent/parseConst.cpp
#	libraries/glslang/glslang/MachineIndependent/parseVersions.h
#	libraries/glslang/glslang/MachineIndependent/pch.cpp
#	libraries/glslang/glslang/MachineIndependent/pch.h
#	libraries/glslang/glslang/MachineIndependent/preprocessor/Pp.cpp
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpAtom.cpp
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpContext.cpp
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpContext.h
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpScanner.cpp
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpTokens.cpp
#	libraries/glslang/glslang/MachineIndependent/preprocessor/PpTokens.h
#	libraries/glslang/glslang/MachineIndependent/propagateNoContraction.cpp
#	libraries/glslang/glslang/MachineIndependent/propagateNoContraction.h
#	libraries/glslang/glslang/MachineIndependent/reflection.cpp
#	libraries/glslang/glslang/MachineIndependent/reflection.h
#	libraries/glslang/glslang/OSDependent/Unix/CMakeLists.txt
#	libraries/glslang/glslang/OSDependent/Unix/ossource.cpp
#	libraries/glslang/glslang/OSDependent/Windows/CMakeLists.txt
#	libraries/glslang/glslang/OSDependent/Windows/main.cpp
#	libraries/glslang/glslang/OSDependent/Windows/ossource.cpp
#	libraries/glslang/glslang/OSDependent/osinclude.h
#	libraries/glslang/glslang/Public/ShaderLang.h
#	libraries/glslang/glslang/updateGrammar
#	libraries/glslang/spirv/CMakeLists.txt
#	libraries/glslang/spirv/GLSL.ext.AMD.h
#	libraries/glslang/spirv/GLSL.ext.EXT.h
#	libraries/glslang/spirv/GLSL.ext.KHR.h
#	libraries/glslang/spirv/GLSL.ext.NV.h
#	libraries/glslang/spirv/GLSL.std.450.h
#	libraries/glslang/spirv/GlslangToSpv.cpp
#	libraries/glslang/spirv/GlslangToSpv.h
#	libraries/glslang/spirv/InReadableOrder.cpp
#	libraries/glslang/spirv/Logger.cpp
#	libraries/glslang/spirv/Logger.h
#	libraries/glslang/spirv/SPVRemapper.cpp
#	libraries/glslang/spirv/SPVRemapper.h
#	libraries/glslang/spirv/SpvBuilder.cpp
#	libraries/glslang/spirv/SpvBuilder.h
#	libraries/glslang/spirv/SpvPostProcess.cpp
#	libraries/glslang/spirv/SpvTools.cpp
#	libraries/glslang/spirv/SpvTools.h
#	libraries/glslang/spirv/bitutils.h
#	libraries/glslang/spirv/disassemble.cpp
#	libraries/glslang/spirv/disassemble.h
#	libraries/glslang/spirv/doc.cpp
#	libraries/glslang/spirv/doc.h
#	libraries/glslang/spirv/hex_float.h
#	libraries/glslang/spirv/spirv.hpp
#	libraries/glslang/spirv/spvIR.h
#	src/CMakeLists.txt
2020-01-04 21:30:08 +01:00

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/* Ppmd.h -- PPMD codec common code
2017-04-03 : Igor Pavlov : Public domain
This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */
#ifndef __PPMD_H
#define __PPMD_H
#include "CpuArch.h"
EXTERN_C_BEGIN
#ifdef MY_CPU_32BIT
#define PPMD_32BIT
#endif
#define PPMD_INT_BITS 7
#define PPMD_PERIOD_BITS 7
#define PPMD_BIN_SCALE (1 << (PPMD_INT_BITS + PPMD_PERIOD_BITS))
#define PPMD_GET_MEAN_SPEC(summ, shift, round) (((summ) + (1 << ((shift) - (round)))) >> (shift))
#define PPMD_GET_MEAN(summ) PPMD_GET_MEAN_SPEC((summ), PPMD_PERIOD_BITS, 2)
#define PPMD_UPDATE_PROB_0(prob) ((prob) + (1 << PPMD_INT_BITS) - PPMD_GET_MEAN(prob))
#define PPMD_UPDATE_PROB_1(prob) ((prob) - PPMD_GET_MEAN(prob))
#define PPMD_N1 4
#define PPMD_N2 4
#define PPMD_N3 4
#define PPMD_N4 ((128 + 3 - 1 * PPMD_N1 - 2 * PPMD_N2 - 3 * PPMD_N3) / 4)
#define PPMD_NUM_INDEXES (PPMD_N1 + PPMD_N2 + PPMD_N3 + PPMD_N4)
#pragma pack(push, 1)
/* Most compilers works OK here even without #pragma pack(push, 1), but some GCC compilers need it. */
/* SEE-contexts for PPM-contexts with masked symbols */
typedef struct
{
UInt16 Summ; /* Freq */
Byte Shift; /* Speed of Freq change; low Shift is for fast change */
Byte Count; /* Count to next change of Shift */
} CPpmd_See;
#define Ppmd_See_Update(p) if ((p)->Shift < PPMD_PERIOD_BITS && --(p)->Count == 0) \
{ (p)->Summ <<= 1; (p)->Count = (Byte)(3 << (p)->Shift++); }
typedef struct
{
Byte Symbol;
Byte Freq;
UInt16 SuccessorLow;
UInt16 SuccessorHigh;
} CPpmd_State;
#pragma pack(pop)
typedef
#ifdef PPMD_32BIT
CPpmd_State *
#else
UInt32
#endif
CPpmd_State_Ref;
typedef
#ifdef PPMD_32BIT
void *
#else
UInt32
#endif
CPpmd_Void_Ref;
typedef
#ifdef PPMD_32BIT
Byte *
#else
UInt32
#endif
CPpmd_Byte_Ref;
#define PPMD_SetAllBitsIn256Bytes(p) \
{ size_t z; for (z = 0; z < 256 / sizeof(p[0]); z += 8) { \
p[z+7] = p[z+6] = p[z+5] = p[z+4] = p[z+3] = p[z+2] = p[z+1] = p[z+0] = ~(size_t)0; }}
EXTERN_C_END
#endif
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