archive_ppmd7_private.h [plain text]
#ifndef __LIBARCHIVE_BUILD
#error This header is only to be used internally to libarchive.
#endif
#ifndef ARCHIVE_PPMD7_PRIVATE_H_INCLUDED
#define ARCHIVE_PPMD7_PRIVATE_H_INCLUDED
#include "archive_ppmd_private.h"
#define PPMD7_MIN_ORDER 2
#define PPMD7_MAX_ORDER 64
#define PPMD7_MIN_MEM_SIZE (1 << 11)
#define PPMD7_MAX_MEM_SIZE (0xFFFFFFFFu - 12 * 3)
struct CPpmd7_Context_;
typedef
#ifdef PPMD_32BIT
struct CPpmd7_Context_ *
#else
UInt32
#endif
CPpmd7_Context_Ref;
typedef struct CPpmd7_Context_
{
UInt16 NumStats;
UInt16 SummFreq;
CPpmd_State_Ref Stats;
CPpmd7_Context_Ref Suffix;
} CPpmd7_Context;
#define Ppmd7Context_OneState(p) ((CPpmd_State *)&(p)->SummFreq)
typedef struct
{
CPpmd7_Context *MinContext, *MaxContext;
CPpmd_State *FoundState;
unsigned OrderFall, InitEsc, PrevSuccess, MaxOrder, HiBitsFlag;
Int32 RunLength, InitRL;
UInt32 Size;
UInt32 GlueCount;
Byte *Base, *LoUnit, *HiUnit, *Text, *UnitsStart;
UInt32 AlignOffset;
Byte Indx2Units[PPMD_NUM_INDEXES];
Byte Units2Indx[128];
CPpmd_Void_Ref FreeList[PPMD_NUM_INDEXES];
Byte NS2Indx[256], NS2BSIndx[256], HB2Flag[256];
CPpmd_See DummySee, See[25][16];
UInt16 BinSumm[128][64];
} CPpmd7;
typedef struct
{
UInt32 (*GetThreshold)(void *p, UInt32 total);
void (*Decode)(void *p, UInt32 start, UInt32 size);
UInt32 (*DecodeBit)(void *p, UInt32 size0);
} IPpmd7_RangeDec;
typedef struct
{
IPpmd7_RangeDec p;
UInt32 Range;
UInt32 Code;
UInt32 Low;
UInt32 Bottom;
IByteIn *Stream;
} CPpmd7z_RangeDec;
typedef struct
{
UInt64 Low;
UInt32 Range;
Byte Cache;
UInt64 CacheSize;
IByteOut *Stream;
} CPpmd7z_RangeEnc;
typedef struct
{
void (*Ppmd7_Construct)(CPpmd7 *p);
Bool (*Ppmd7_Alloc)(CPpmd7 *p, UInt32 size, ISzAlloc *alloc);
void (*Ppmd7_Free)(CPpmd7 *p, ISzAlloc *alloc);
void (*Ppmd7_Init)(CPpmd7 *p, unsigned maxOrder);
#define Ppmd7_WasAllocated(p) ((p)->Base != NULL)
void (*Ppmd7z_RangeDec_CreateVTable)(CPpmd7z_RangeDec *p);
void (*PpmdRAR_RangeDec_CreateVTable)(CPpmd7z_RangeDec *p);
Bool (*Ppmd7z_RangeDec_Init)(CPpmd7z_RangeDec *p);
Bool (*PpmdRAR_RangeDec_Init)(CPpmd7z_RangeDec *p);
#define Ppmd7z_RangeDec_IsFinishedOK(p) ((p)->Code == 0)
int (*Ppmd7_DecodeSymbol)(CPpmd7 *p, IPpmd7_RangeDec *rc);
void (*Ppmd7z_RangeEnc_Init)(CPpmd7z_RangeEnc *p);
void (*Ppmd7z_RangeEnc_FlushData)(CPpmd7z_RangeEnc *p);
void (*Ppmd7_EncodeSymbol)(CPpmd7 *p, CPpmd7z_RangeEnc *rc, int symbol);
} IPpmd7;
extern const IPpmd7 __archive_ppmd7_functions;
#endif