1baa3858d3f5d128a5c8466b700098109edcad5f2repo sync/* LzFind.c -- Match finder for LZ algorithms 2baa3858d3f5d128a5c8466b700098109edcad5f2repo sync2009-04-22 : Igor Pavlov : Public domain */ 3baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 4cd66d540cead3f8200b0c73bad9c276d67896c3dDavid Srbecky#include "Precomp.h" 5cd66d540cead3f8200b0c73bad9c276d67896c3dDavid Srbecky 6baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#include <string.h> 7baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 8baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#include "LzFind.h" 9baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#include "LzHash.h" 10baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 11baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kEmptyHashValue 0 12baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kMaxValForNormalize ((UInt32)0xFFFFFFFF) 13baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kNormalizeStepMin (1 << 10) /* it must be power of 2 */ 14baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kNormalizeMask (~(kNormalizeStepMin - 1)) 15baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kMaxHistorySize ((UInt32)3 << 30) 16baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 17baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kStartMaxLen 3 18baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 19baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void LzInWindow_Free(CMatchFinder *p, ISzAlloc *alloc) 20baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 21baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (!p->directInput) 22baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 23baa3858d3f5d128a5c8466b700098109edcad5f2repo sync alloc->Free(alloc, p->bufferBase); 24baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->bufferBase = 0; 25baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 26baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 27baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 28baa3858d3f5d128a5c8466b700098109edcad5f2repo sync/* keepSizeBefore + keepSizeAfter + keepSizeReserv must be < 4G) */ 29baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 30baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic int LzInWindow_Create(CMatchFinder *p, UInt32 keepSizeReserv, ISzAlloc *alloc) 31baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 32baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 blockSize = p->keepSizeBefore + p->keepSizeAfter + keepSizeReserv; 33baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->directInput) 34baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 35baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->blockSize = blockSize; 36baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 1; 37baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 38baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->bufferBase == 0 || p->blockSize != blockSize) 39baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 40baa3858d3f5d128a5c8466b700098109edcad5f2repo sync LzInWindow_Free(p, alloc); 41baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->blockSize = blockSize; 42baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->bufferBase = (Byte *)alloc->Alloc(alloc, (size_t)blockSize); 43baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 44baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return (p->bufferBase != 0); 45baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 46baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 47baa3858d3f5d128a5c8466b700098109edcad5f2repo syncByte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p) { return p->buffer; } 48baa3858d3f5d128a5c8466b700098109edcad5f2repo syncByte MatchFinder_GetIndexByte(CMatchFinder *p, Int32 index) { return p->buffer[index]; } 49baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 50baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 MatchFinder_GetNumAvailableBytes(CMatchFinder *p) { return p->streamPos - p->pos; } 51baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 52baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue) 53baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 54baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->posLimit -= subValue; 55baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->pos -= subValue; 56baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamPos -= subValue; 57baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 58baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 59baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_ReadBlock(CMatchFinder *p) 60baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 61baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->streamEndWasReached || p->result != SZ_OK) 62baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 63baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->directInput) 64baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 65baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 curSize = 0xFFFFFFFF - p->streamPos; 66baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (curSize > p->directInputRem) 67baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curSize = (UInt32)p->directInputRem; 68baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->directInputRem -= curSize; 69baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamPos += curSize; 70baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->directInputRem == 0) 71baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamEndWasReached = 1; 72baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 73baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 74baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (;;) 75baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 76baa3858d3f5d128a5c8466b700098109edcad5f2repo sync Byte *dest = p->buffer + (p->streamPos - p->pos); 77baa3858d3f5d128a5c8466b700098109edcad5f2repo sync size_t size = (p->bufferBase + p->blockSize - dest); 78baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (size == 0) 79baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 80baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->result = p->stream->Read(p->stream, dest, &size); 81baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->result != SZ_OK) 82baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 83baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (size == 0) 84baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 85baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamEndWasReached = 1; 86baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 87baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 88baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamPos += (UInt32)size; 89baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->streamPos - p->pos > p->keepSizeAfter) 90baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 91baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 92baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 93baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 94baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_MoveBlock(CMatchFinder *p) 95baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 96baa3858d3f5d128a5c8466b700098109edcad5f2repo sync memmove(p->bufferBase, 97baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->buffer - p->keepSizeBefore, 98baa3858d3f5d128a5c8466b700098109edcad5f2repo sync (size_t)(p->streamPos - p->pos + p->keepSizeBefore)); 99baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->buffer = p->bufferBase + p->keepSizeBefore; 100baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 101baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 102baa3858d3f5d128a5c8466b700098109edcad5f2repo syncint MatchFinder_NeedMove(CMatchFinder *p) 103baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 104baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->directInput) 105baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 0; 106baa3858d3f5d128a5c8466b700098109edcad5f2repo sync /* if (p->streamEndWasReached) return 0; */ 107baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return ((size_t)(p->bufferBase + p->blockSize - p->buffer) <= p->keepSizeAfter); 108baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 109baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 110baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_ReadIfRequired(CMatchFinder *p) 111baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 112baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->streamEndWasReached) 113baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 114baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->keepSizeAfter >= p->streamPos - p->pos) 115baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_ReadBlock(p); 116baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 117baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 118baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_CheckAndMoveAndRead(CMatchFinder *p) 119baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 120baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (MatchFinder_NeedMove(p)) 121baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_MoveBlock(p); 122baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_ReadBlock(p); 123baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 124baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 125baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_SetDefaultSettings(CMatchFinder *p) 126baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 127baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->cutValue = 32; 128baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->btMode = 1; 129baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->numHashBytes = 4; 130baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->bigHash = 0; 131baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 132baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 133baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define kCrcPoly 0xEDB88320 134baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 135baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_Construct(CMatchFinder *p) 136baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 137baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 i; 138baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->bufferBase = 0; 139baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->directInput = 0; 140baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash = 0; 141baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_SetDefaultSettings(p); 142baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 143baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (i = 0; i < 256; i++) 144baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 145baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 r = i; 146baa3858d3f5d128a5c8466b700098109edcad5f2repo sync int j; 147baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (j = 0; j < 8; j++) 148baa3858d3f5d128a5c8466b700098109edcad5f2repo sync r = (r >> 1) ^ (kCrcPoly & ~((r & 1) - 1)); 149baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->crc[i] = r; 150baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 151baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 152baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 153baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_FreeThisClassMemory(CMatchFinder *p, ISzAlloc *alloc) 154baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 155baa3858d3f5d128a5c8466b700098109edcad5f2repo sync alloc->Free(alloc, p->hash); 156baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash = 0; 157baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 158baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 159baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc) 160baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 161baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_FreeThisClassMemory(p, alloc); 162baa3858d3f5d128a5c8466b700098109edcad5f2repo sync LzInWindow_Free(p, alloc); 163baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 164baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 165baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic CLzRef* AllocRefs(UInt32 num, ISzAlloc *alloc) 166baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 167baa3858d3f5d128a5c8466b700098109edcad5f2repo sync size_t sizeInBytes = (size_t)num * sizeof(CLzRef); 168baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (sizeInBytes / sizeof(CLzRef) != num) 169baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 0; 170baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return (CLzRef *)alloc->Alloc(alloc, sizeInBytes); 171baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 172baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 173baa3858d3f5d128a5c8466b700098109edcad5f2repo syncint MatchFinder_Create(CMatchFinder *p, UInt32 historySize, 174baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter, 175baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ISzAlloc *alloc) 176baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 177baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 sizeReserv; 178baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (historySize > kMaxHistorySize) 179baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 180baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_Free(p, alloc); 181baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 0; 182baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 183baa3858d3f5d128a5c8466b700098109edcad5f2repo sync sizeReserv = historySize >> 1; 184baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (historySize > ((UInt32)2 << 30)) 185baa3858d3f5d128a5c8466b700098109edcad5f2repo sync sizeReserv = historySize >> 2; 186baa3858d3f5d128a5c8466b700098109edcad5f2repo sync sizeReserv += (keepAddBufferBefore + matchMaxLen + keepAddBufferAfter) / 2 + (1 << 19); 187baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 188baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->keepSizeBefore = historySize + keepAddBufferBefore + 1; 189baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->keepSizeAfter = matchMaxLen + keepAddBufferAfter; 190baa3858d3f5d128a5c8466b700098109edcad5f2repo sync /* we need one additional byte, since we use MoveBlock after pos++ and before dictionary using */ 191baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (LzInWindow_Create(p, sizeReserv, alloc)) 192baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 193baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 newCyclicBufferSize = historySize + 1; 194baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hs; 195baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->matchMaxLen = matchMaxLen; 196baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 197baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->fixedHashSize = 0; 198baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->numHashBytes == 2) 199baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs = (1 << 16) - 1; 200baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 201baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 202baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs = historySize - 1; 203baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs |= (hs >> 1); 204baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs |= (hs >> 2); 205baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs |= (hs >> 4); 206baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs |= (hs >> 8); 207baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs >>= 1; 208baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs |= 0xFFFF; /* don't change it! It's required for Deflate */ 209baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (hs > (1 << 24)) 210baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 211baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->numHashBytes == 3) 212baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs = (1 << 24) - 1; 213baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 214baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs >>= 1; 215baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 216baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 217baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hashMask = hs; 218baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs++; 219baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->numHashBytes > 2) p->fixedHashSize += kHash2Size; 220baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->numHashBytes > 3) p->fixedHashSize += kHash3Size; 221baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->numHashBytes > 4) p->fixedHashSize += kHash4Size; 222baa3858d3f5d128a5c8466b700098109edcad5f2repo sync hs += p->fixedHashSize; 223baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 224baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 225baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 226baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 prevSize = p->hashSizeSum + p->numSons; 227baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 newSize; 228baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->historySize = historySize; 229baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hashSizeSum = hs; 230baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->cyclicBufferSize = newCyclicBufferSize; 231baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->numSons = (p->btMode ? newCyclicBufferSize * 2 : newCyclicBufferSize); 232baa3858d3f5d128a5c8466b700098109edcad5f2repo sync newSize = p->hashSizeSum + p->numSons; 233baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->hash != 0 && prevSize == newSize) 234baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 1; 235baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_FreeThisClassMemory(p, alloc); 236baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash = AllocRefs(newSize, alloc); 237baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->hash != 0) 238baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 239baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->son = p->hash + p->hashSizeSum; 240baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 1; 241baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 242baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 243baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 244baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_Free(p, alloc); 245baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return 0; 246baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 247baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 248baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_SetLimits(CMatchFinder *p) 249baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 250baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 limit = kMaxValForNormalize - p->pos; 251baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 limit2 = p->cyclicBufferSize - p->cyclicBufferPos; 252baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (limit2 < limit) 253baa3858d3f5d128a5c8466b700098109edcad5f2repo sync limit = limit2; 254baa3858d3f5d128a5c8466b700098109edcad5f2repo sync limit2 = p->streamPos - p->pos; 255baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (limit2 <= p->keepSizeAfter) 256baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 257baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (limit2 > 0) 258baa3858d3f5d128a5c8466b700098109edcad5f2repo sync limit2 = 1; 259baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 260baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 261baa3858d3f5d128a5c8466b700098109edcad5f2repo sync limit2 -= p->keepSizeAfter; 262baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (limit2 < limit) 263baa3858d3f5d128a5c8466b700098109edcad5f2repo sync limit = limit2; 264baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 265baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 lenLimit = p->streamPos - p->pos; 266baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (lenLimit > p->matchMaxLen) 267baa3858d3f5d128a5c8466b700098109edcad5f2repo sync lenLimit = p->matchMaxLen; 268baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->lenLimit = lenLimit; 269baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 270baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->posLimit = p->pos + limit; 271baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 272baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 273baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_Init(CMatchFinder *p) 274baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 275baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 i; 276baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (i = 0; i < p->hashSizeSum; i++) 277baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[i] = kEmptyHashValue; 278baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->cyclicBufferPos = 0; 279baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->buffer = p->bufferBase; 280baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->pos = p->streamPos = p->cyclicBufferSize; 281baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->result = SZ_OK; 282baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->streamEndWasReached = 0; 283baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_ReadBlock(p); 284baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_SetLimits(p); 285baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 286baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 287baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 MatchFinder_GetSubValue(CMatchFinder *p) 288baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 289baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return (p->pos - p->historySize - 1) & kNormalizeMask; 290baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 291baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 292baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems) 293baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 294baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 i; 295baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (i = 0; i < numItems; i++) 296baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 297baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 value = items[i]; 298baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (value <= subValue) 299baa3858d3f5d128a5c8466b700098109edcad5f2repo sync value = kEmptyHashValue; 300baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 301baa3858d3f5d128a5c8466b700098109edcad5f2repo sync value -= subValue; 302baa3858d3f5d128a5c8466b700098109edcad5f2repo sync items[i] = value; 303baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 304baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 305baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 306baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_Normalize(CMatchFinder *p) 307baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 308baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 subValue = MatchFinder_GetSubValue(p); 309baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_Normalize3(subValue, p->hash, p->hashSizeSum + p->numSons); 310baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_ReduceOffsets(p, subValue); 311baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 312baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 313baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_CheckLimits(CMatchFinder *p) 314baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 315baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->pos == kMaxValForNormalize) 316baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_Normalize(p); 317baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (!p->streamEndWasReached && p->keepSizeAfter == p->streamPos - p->pos) 318baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_CheckAndMoveAndRead(p); 319baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (p->cyclicBufferPos == p->cyclicBufferSize) 320baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->cyclicBufferPos = 0; 321baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MatchFinder_SetLimits(p); 322baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 323baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 324baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 * Hc_GetMatchesSpec(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son, 325baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue, 326baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 *distances, UInt32 maxLen) 327baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 328baa3858d3f5d128a5c8466b700098109edcad5f2repo sync son[_cyclicBufferPos] = curMatch; 329baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (;;) 330baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 331baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 delta = pos - curMatch; 332baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cutValue-- == 0 || delta >= _cyclicBufferSize) 333baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return distances; 334baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 335baa3858d3f5d128a5c8466b700098109edcad5f2repo sync const Byte *pb = cur - delta; 336baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = son[_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)]; 337baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[maxLen] == cur[maxLen] && *pb == *cur) 338baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 339baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 len = 0; 340baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (++len != lenLimit) 341baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] != cur[len]) 342baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 343baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen < len) 344baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 345baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *distances++ = maxLen = len; 346baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *distances++ = delta - 1; 347baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (len == lenLimit) 348baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return distances; 349baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 350baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 351baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 352baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 353baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 354baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 355baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son, 356baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue, 357baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 *distances, UInt32 maxLen) 358baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 359baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *ptr0 = son + (_cyclicBufferPos << 1) + 1; 360baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *ptr1 = son + (_cyclicBufferPos << 1); 361baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 len0 = 0, len1 = 0; 362baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (;;) 363baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 364baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 delta = pos - curMatch; 365baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cutValue-- == 0 || delta >= _cyclicBufferSize) 366baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 367baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = *ptr1 = kEmptyHashValue; 368baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return distances; 369baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 370baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 371baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *pair = son + ((_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)) << 1); 372baa3858d3f5d128a5c8466b700098109edcad5f2repo sync const Byte *pb = cur - delta; 373baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 len = (len0 < len1 ? len0 : len1); 374baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] == cur[len]) 375baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 376baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (++len != lenLimit && pb[len] == cur[len]) 377baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (++len != lenLimit) 378baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] != cur[len]) 379baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 380baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen < len) 381baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 382baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *distances++ = maxLen = len; 383baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *distances++ = delta - 1; 384baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (len == lenLimit) 385baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 386baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr1 = pair[0]; 387baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = pair[1]; 388baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return distances; 389baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 390baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 391baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 392baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] < cur[len]) 393baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 394baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr1 = curMatch; 395baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ptr1 = pair + 1; 396baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = *ptr1; 397baa3858d3f5d128a5c8466b700098109edcad5f2repo sync len1 = len; 398baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 399baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 400baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 401baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = curMatch; 402baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ptr0 = pair; 403baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = *ptr0; 404baa3858d3f5d128a5c8466b700098109edcad5f2repo sync len0 = len; 405baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 406baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 407baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 408baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 409baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 410baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void SkipMatchesSpec(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son, 411baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue) 412baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 413baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *ptr0 = son + (_cyclicBufferPos << 1) + 1; 414baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *ptr1 = son + (_cyclicBufferPos << 1); 415baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 len0 = 0, len1 = 0; 416baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (;;) 417baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 418baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 delta = pos - curMatch; 419baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cutValue-- == 0 || delta >= _cyclicBufferSize) 420baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 421baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = *ptr1 = kEmptyHashValue; 422baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 423baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 424baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 425baa3858d3f5d128a5c8466b700098109edcad5f2repo sync CLzRef *pair = son + ((_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)) << 1); 426baa3858d3f5d128a5c8466b700098109edcad5f2repo sync const Byte *pb = cur - delta; 427baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 len = (len0 < len1 ? len0 : len1); 428baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] == cur[len]) 429baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 430baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (++len != lenLimit) 431baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] != cur[len]) 432baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 433baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 434baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (len == lenLimit) 435baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 436baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr1 = pair[0]; 437baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = pair[1]; 438baa3858d3f5d128a5c8466b700098109edcad5f2repo sync return; 439baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 440baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 441baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 442baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (pb[len] < cur[len]) 443baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 444baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr1 = curMatch; 445baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ptr1 = pair + 1; 446baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = *ptr1; 447baa3858d3f5d128a5c8466b700098109edcad5f2repo sync len1 = len; 448baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 449baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 450baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 451baa3858d3f5d128a5c8466b700098109edcad5f2repo sync *ptr0 = curMatch; 452baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ptr0 = pair; 453baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = *ptr0; 454baa3858d3f5d128a5c8466b700098109edcad5f2repo sync len0 = len; 455baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 456baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 457baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 458baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 459baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 460baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define MOVE_POS \ 461baa3858d3f5d128a5c8466b700098109edcad5f2repo sync ++p->cyclicBufferPos; \ 462baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->buffer++; \ 463baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (++p->pos == p->posLimit) MatchFinder_CheckLimits(p); 464baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 465baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define MOVE_POS_RET MOVE_POS return offset; 466baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 467baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void MatchFinder_MovePos(CMatchFinder *p) { MOVE_POS; } 468baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 469baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define GET_MATCHES_HEADER2(minLen, ret_op) \ 470baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 lenLimit; UInt32 hashValue; const Byte *cur; UInt32 curMatch; \ 471baa3858d3f5d128a5c8466b700098109edcad5f2repo sync lenLimit = p->lenLimit; { if (lenLimit < minLen) { MatchFinder_MovePos(p); ret_op; }} \ 472baa3858d3f5d128a5c8466b700098109edcad5f2repo sync cur = p->buffer; 473baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 474baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define GET_MATCHES_HEADER(minLen) GET_MATCHES_HEADER2(minLen, return 0) 475baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define SKIP_HEADER(minLen) GET_MATCHES_HEADER2(minLen, continue) 476baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 477baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define MF_PARAMS(p) p->pos, p->buffer, p->son, p->cyclicBufferPos, p->cyclicBufferSize, p->cutValue 478baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 479baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define GET_MATCHES_FOOTER(offset, maxLen) \ 480baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = (UInt32)(GetMatchesSpec1(lenLimit, curMatch, MF_PARAMS(p), \ 481baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances + offset, maxLen) - distances); MOVE_POS_RET; 482baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 483baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define SKIP_FOOTER \ 484baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p)); MOVE_POS; 485baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 486baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 Bt2_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 487baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 488baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 offset; 489baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(2) 490baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH2_CALC; 491baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 492baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 493baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 0; 494baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_FOOTER(offset, 1) 495baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 496baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 497baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 498baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 499baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 offset; 500baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(3) 501baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH_ZIP_CALC; 502baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 503baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 504baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 0; 505baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_FOOTER(offset, 2) 506baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 507baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 508baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 Bt3_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 509baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 510baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value, delta2, maxLen, offset; 511baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(3) 512baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 513baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH3_CALC; 514baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 515baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta2 = p->pos - p->hash[hash2Value]; 516baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix3HashSize + hashValue]; 517baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 518baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hash2Value] = 519baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hashValue] = p->pos; 520baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 521baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 522baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 2; 523baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 0; 524baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur) 525baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 526baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (; maxLen != lenLimit; maxLen++) 527baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen]) 528baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 529baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[0] = maxLen; 530baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[1] = delta2 - 1; 531baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 2; 532baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen == lenLimit) 533baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 534baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p)); 535baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS_RET; 536baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 537baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 538baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_FOOTER(offset, maxLen) 539baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 540baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 541baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 Bt4_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 542baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 543baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value, hash3Value, delta2, delta3, maxLen, offset; 544baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(4) 545baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 546baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH4_CALC; 547baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 548baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta2 = p->pos - p->hash[ hash2Value]; 549baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta3 = p->pos - p->hash[kFix3HashSize + hash3Value]; 550baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix4HashSize + hashValue]; 551baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 552baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[ hash2Value] = 553baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hash3Value] = 554baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix4HashSize + hashValue] = p->pos; 555baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 556baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 1; 557baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 0; 558baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur) 559baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 560baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[0] = maxLen = 2; 561baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[1] = delta2 - 1; 562baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 2; 563baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 564baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (delta2 != delta3 && delta3 < p->cyclicBufferSize && *(cur - delta3) == *cur) 565baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 566baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 3; 567baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[offset + 1] = delta3 - 1; 568baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset += 2; 569baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta2 = delta3; 570baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 571baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (offset != 0) 572baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 573baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (; maxLen != lenLimit; maxLen++) 574baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen]) 575baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 576baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[offset - 2] = maxLen; 577baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen == lenLimit) 578baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 579baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p)); 580baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS_RET; 581baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 582baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 583baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen < 3) 584baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 3; 585baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_FOOTER(offset, maxLen) 586baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 587baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 588baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic UInt32 Hc4_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 589baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 590baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value, hash3Value, delta2, delta3, maxLen, offset; 591baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(4) 592baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 593baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH4_CALC; 594baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 595baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta2 = p->pos - p->hash[ hash2Value]; 596baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta3 = p->pos - p->hash[kFix3HashSize + hash3Value]; 597baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix4HashSize + hashValue]; 598baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 599baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[ hash2Value] = 600baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hash3Value] = 601baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix4HashSize + hashValue] = p->pos; 602baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 603baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 1; 604baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 0; 605baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur) 606baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 607baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[0] = maxLen = 2; 608baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[1] = delta2 - 1; 609baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = 2; 610baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 611baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (delta2 != delta3 && delta3 < p->cyclicBufferSize && *(cur - delta3) == *cur) 612baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 613baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 3; 614baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[offset + 1] = delta3 - 1; 615baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset += 2; 616baa3858d3f5d128a5c8466b700098109edcad5f2repo sync delta2 = delta3; 617baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 618baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (offset != 0) 619baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 620baa3858d3f5d128a5c8466b700098109edcad5f2repo sync for (; maxLen != lenLimit; maxLen++) 621baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen]) 622baa3858d3f5d128a5c8466b700098109edcad5f2repo sync break; 623baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances[offset - 2] = maxLen; 624baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen == lenLimit) 625baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 626baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->son[p->cyclicBufferPos] = curMatch; 627baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS_RET; 628baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 629baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 630baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (maxLen < 3) 631baa3858d3f5d128a5c8466b700098109edcad5f2repo sync maxLen = 3; 632baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = (UInt32)(Hc_GetMatchesSpec(lenLimit, curMatch, MF_PARAMS(p), 633baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances + offset, maxLen) - (distances)); 634baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS_RET 635baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 636baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 637baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances) 638baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 639baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 offset; 640baa3858d3f5d128a5c8466b700098109edcad5f2repo sync GET_MATCHES_HEADER(3) 641baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH_ZIP_CALC; 642baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 643baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 644baa3858d3f5d128a5c8466b700098109edcad5f2repo sync offset = (UInt32)(Hc_GetMatchesSpec(lenLimit, curMatch, MF_PARAMS(p), 645baa3858d3f5d128a5c8466b700098109edcad5f2repo sync distances, 2) - (distances)); 646baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS_RET 647baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 648baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 649baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void Bt2_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 650baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 651baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 652baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 653baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(2) 654baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH2_CALC; 655baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 656baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 657baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_FOOTER 658baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 659baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 660baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 661baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 662baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 663baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 664baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 665baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 666baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(3) 667baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH_ZIP_CALC; 668baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 669baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 670baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_FOOTER 671baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 672baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 673baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 674baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 675baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void Bt3_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 676baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 677baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 678baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 679baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value; 680baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(3) 681baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH3_CALC; 682baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix3HashSize + hashValue]; 683baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hash2Value] = 684baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hashValue] = p->pos; 685baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_FOOTER 686baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 687baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 688baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 689baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 690baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void Bt4_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 691baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 692baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 693baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 694baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value, hash3Value; 695baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(4) 696baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH4_CALC; 697baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix4HashSize + hashValue]; 698baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[ hash2Value] = 699baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hash3Value] = p->pos; 700baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix4HashSize + hashValue] = p->pos; 701baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_FOOTER 702baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 703baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 704baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 705baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 706baa3858d3f5d128a5c8466b700098109edcad5f2repo syncstatic void Hc4_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 707baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 708baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 709baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 710baa3858d3f5d128a5c8466b700098109edcad5f2repo sync UInt32 hash2Value, hash3Value; 711baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(4) 712baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH4_CALC; 713baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[kFix4HashSize + hashValue]; 714baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[ hash2Value] = 715baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix3HashSize + hash3Value] = 716baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[kFix4HashSize + hashValue] = p->pos; 717baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->son[p->cyclicBufferPos] = curMatch; 718baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS 719baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 720baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 721baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 722baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 723baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num) 724baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 725baa3858d3f5d128a5c8466b700098109edcad5f2repo sync do 726baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 727baa3858d3f5d128a5c8466b700098109edcad5f2repo sync SKIP_HEADER(3) 728baa3858d3f5d128a5c8466b700098109edcad5f2repo sync HASH_ZIP_CALC; 729baa3858d3f5d128a5c8466b700098109edcad5f2repo sync curMatch = p->hash[hashValue]; 730baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->hash[hashValue] = p->pos; 731baa3858d3f5d128a5c8466b700098109edcad5f2repo sync p->son[p->cyclicBufferPos] = curMatch; 732baa3858d3f5d128a5c8466b700098109edcad5f2repo sync MOVE_POS 733baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 734baa3858d3f5d128a5c8466b700098109edcad5f2repo sync while (--num != 0); 735baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 736baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 737baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MatchFinder_CreateVTable(CMatchFinder *p, IMatchFinder *vTable) 738baa3858d3f5d128a5c8466b700098109edcad5f2repo sync{ 739baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->Init = (Mf_Init_Func)MatchFinder_Init; 740baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetIndexByte = (Mf_GetIndexByte_Func)MatchFinder_GetIndexByte; 741baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetNumAvailableBytes = (Mf_GetNumAvailableBytes_Func)MatchFinder_GetNumAvailableBytes; 742baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetPointerToCurrentPos = (Mf_GetPointerToCurrentPos_Func)MatchFinder_GetPointerToCurrentPos; 743baa3858d3f5d128a5c8466b700098109edcad5f2repo sync if (!p->btMode) 744baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 745baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetMatches = (Mf_GetMatches_Func)Hc4_MatchFinder_GetMatches; 746baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->Skip = (Mf_Skip_Func)Hc4_MatchFinder_Skip; 747baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 748baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else if (p->numHashBytes == 2) 749baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 750baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetMatches = (Mf_GetMatches_Func)Bt2_MatchFinder_GetMatches; 751baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->Skip = (Mf_Skip_Func)Bt2_MatchFinder_Skip; 752baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 753baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else if (p->numHashBytes == 3) 754baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 755baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetMatches = (Mf_GetMatches_Func)Bt3_MatchFinder_GetMatches; 756baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->Skip = (Mf_Skip_Func)Bt3_MatchFinder_Skip; 757baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 758baa3858d3f5d128a5c8466b700098109edcad5f2repo sync else 759baa3858d3f5d128a5c8466b700098109edcad5f2repo sync { 760baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->GetMatches = (Mf_GetMatches_Func)Bt4_MatchFinder_GetMatches; 761baa3858d3f5d128a5c8466b700098109edcad5f2repo sync vTable->Skip = (Mf_Skip_Func)Bt4_MatchFinder_Skip; 762baa3858d3f5d128a5c8466b700098109edcad5f2repo sync } 763baa3858d3f5d128a5c8466b700098109edcad5f2repo sync} 764