From: ShadowFlare Date: Fri, 4 Jul 2008 02:53:33 +0000 (-0600) Subject: Initial import X-Git-Url: https://sfsrealm.hopto.org/projects/gitweb.cgi?a=commitdiff_plain;h=3e09a0ee84d84b48b2796dec63946184d8bdc66a;p=SComp.git Initial import --- 3e09a0ee84d84b48b2796dec63946184d8bdc66a diff --git a/SComp.cpp b/SComp.cpp new file mode 100644 index 0000000..34b5ddd --- /dev/null +++ b/SComp.cpp @@ -0,0 +1,638 @@ +// SComp.cpp - Main compression/decompression and wrapper routines +// +// Requires Zlib for Warcraft III files (not included). +// Get it at http://www.gzip.org/zlib/ +// +// Converted from assembly to C++ by ShadowFlare. +// E-mail : blakflare@hotmail.com +// Webpage : http://sfsrealm.hopto.org/ +// License information for this code is in license.txt + + +// Define NO_WINDOWS_H globally if compiling for +// Windows to disable calling Windows functions. + +// Comment this out to disable Zlib compression support. +#define USE_ZLIB + +#include "SComp.h" +#include "SErr.h" +#include "SMem.h" +#include "wave.h" +#include "huffman.h" +#ifdef USE_ZLIB +#ifndef __SYS_ZLIB +#include "zlib.h" +#else +#include +#endif +#endif +#include "pklib.h" + +typedef void (__fastcall *FCOMPRESS)(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); +typedef void (__fastcall *FDECOMPRESS)(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); + +struct CompressFunc { + DWORD dwFlag; + FCOMPRESS fnCompress; +}; + +struct DecompressFunc { + DWORD dwFlag; + FDECOMPRESS fnDecompress; +}; + +void __fastcall CompressWaveMono(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); +void __fastcall CompressWaveStereo(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); +void __fastcall HuffmanCompress(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); +#ifdef USE_ZLIB +void __fastcall Deflate(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); +#endif +void __fastcall Implode(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel); + +void __fastcall DecompressWaveMono(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); +void __fastcall DecompressWaveStereo(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); +void __fastcall HuffmanDecompress(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); +#ifdef USE_ZLIB +void __fastcall Inflate(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); +#endif +void __fastcall Explode(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); + +void __fastcall InitWaveCompress(DWORD dwCompressLevel, LPDWORD *lplpdwCompressionSubType, LPDWORD lpdwCompressionSubType); + +typedef struct { + LPVOID lpvDestinationMem; + DWORD dwDestStart; + DWORD dwDestLen; + LPVOID lpvSourceMem; + DWORD dwSrcStart; + DWORD dwSrcLen; +} BUFFERINFO; + +unsigned int FillInput(char *lpvBuffer, unsigned int *lpdwSize, void *param); +void FillOutput(char *lpvBuffer, unsigned int *lpdwSize, void *param); + +CompressFunc CompressionFunctions[] = +{ + {0x40, CompressWaveMono}, + {0x80, CompressWaveStereo}, + {0x01, HuffmanCompress}, +#ifdef USE_ZLIB + {0x02, Deflate}, +#endif + {0x08, Implode} +}; + +DecompressFunc DecompressionFunctions[] = +{ + {0x40, DecompressWaveMono}, + {0x80, DecompressWaveStereo}, + {0x01, HuffmanDecompress}, +#ifdef USE_ZLIB + {0x02, Inflate}, +#endif + {0x08, Explode} +}; + +const DWORD nCompFunctions = sizeof(CompressionFunctions) / sizeof(CompressionFunctions[0]); +const DWORD nDecompFunctions = sizeof(DecompressionFunctions) / sizeof(DecompressionFunctions[0]); + +CompressFunc *lpLastCompressMethod = &CompressionFunctions[nCompFunctions-1]; +DecompressFunc *lpLastDecompressMethod = &DecompressionFunctions[nDecompFunctions-1]; + +BOOL WINAPI SCompCompress(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, DWORD dwCompressionType, DWORD dwCompressionSubType, DWORD dwCompressLevel) +{ + DWORD dwCompressCount,dwCurFlag,dwTempFlags,dwInSize,dwOutSize; + LPVOID lpvInBuffer,lpvOutBuffer,lpvWorkBuffer,lpvAllocBuffer; + CompressFunc *lpCFuncTable; + + if (!lpdwCompressedSize) { + SErrSetLastError(ERROR_INVALID_PARAMETER); + return FALSE; + } + if (*lpdwCompressedSize < dwDecompressedSize || !lpvDestinationMem || !lpvSourceMem) { + SErrSetLastError(ERROR_INVALID_PARAMETER); + return FALSE; + } + + dwCompressCount = 0; + dwTempFlags = dwCompressionType; + lpCFuncTable = CompressionFunctions; + + do { + dwCurFlag = lpCFuncTable->dwFlag; + + if (dwCompressionType & dwCurFlag) { + dwCompressCount++; + } + + lpCFuncTable++; + dwTempFlags &= ~dwCurFlag; + } while (lpCFuncTable <= lpLastCompressMethod); + + if (dwTempFlags) { + return FALSE; + } + + dwInSize = dwDecompressedSize; + lpvAllocBuffer = 0; + + if (dwCompressCount >= 2 + || !((LPBYTE)lpvDestinationMem+dwInSize <= (LPBYTE)lpvSourceMem + || (LPBYTE)lpvSourceMem+dwInSize <= (LPBYTE)lpvDestinationMem + || !dwCompressCount)) + { + lpvWorkBuffer = SMemAlloc(dwInSize); + + if (!lpvWorkBuffer) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return FALSE; + } + + lpvAllocBuffer = lpvWorkBuffer; + } + + lpvInBuffer = lpvSourceMem; + lpCFuncTable = CompressionFunctions; + + do { + dwTempFlags = dwCompressionType; + dwCurFlag = lpCFuncTable->dwFlag; + + if (dwTempFlags & dwCurFlag) { + dwCompressCount--; + + if (dwCompressCount & 1) { + lpvOutBuffer = lpvWorkBuffer; + } + else { + lpvOutBuffer = (LPVOID)((LPBYTE)lpvDestinationMem+1); + } + + if ((LPBYTE)lpvOutBuffer+dwInSize > (LPBYTE)lpvInBuffer + && (LPBYTE)lpvInBuffer+dwInSize > (LPBYTE)lpvOutBuffer) + { + if ((LPBYTE)lpvOutBuffer+dwInSize > (LPBYTE)lpvWorkBuffer + && (LPBYTE)lpvWorkBuffer+dwInSize > (LPBYTE)lpvOutBuffer) + { + lpvWorkBuffer = lpvDestinationMem; + lpvOutBuffer = (LPVOID)((LPBYTE)lpvWorkBuffer+1); + } + else { + lpvOutBuffer = lpvWorkBuffer; + } + } + + dwDecompressedSize = dwInSize-1; + lpCFuncTable->fnCompress(lpvOutBuffer,&dwDecompressedSize,lpvInBuffer,dwInSize,&dwCompressionSubType,dwCompressLevel); + dwOutSize = dwDecompressedSize+1; + + if (dwOutSize < dwInSize) { + lpvInBuffer = lpvOutBuffer; + dwInSize = dwDecompressedSize; + } + else { + dwCurFlag = lpCFuncTable->dwFlag; + dwCompressionType = dwCompressionType & (~dwCurFlag); + } + + lpvWorkBuffer = lpvAllocBuffer; + } + + lpCFuncTable++; + } while (lpCFuncTable <= lpLastCompressMethod); + + lpvOutBuffer = lpvDestinationMem; + + if (lpvInBuffer != lpvOutBuffer) { + if ((LPBYTE)lpvInBuffer == (LPBYTE)lpvOutBuffer+1) { + *(LPBYTE)lpvOutBuffer = (BYTE)dwCompressionType; + dwInSize++; + } + else { + if (dwCompressionType) { + SMemCopy((LPBYTE)lpvOutBuffer+1,lpvInBuffer,dwInSize); + dwInSize++; + *(LPBYTE)lpvOutBuffer = (BYTE)dwCompressionType; + } + else { + SMemCopy(lpvOutBuffer,lpvInBuffer,dwInSize); + } + + lpvWorkBuffer = lpvAllocBuffer; + } + } + + *lpdwCompressedSize = dwInSize; + + if (lpvWorkBuffer) { + SMemFree(lpvWorkBuffer); + } + + return TRUE; +} + +BOOL WINAPI SCompDecompress(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + DWORD dwDecompressedSize, dwOutSize, dwCompressTypes, dwCurFlag, dwTempFlags,dwCompressCount; + LPVOID lpvInBuffer,lpvOutBuffer,lpvWorkBuffer,lpvTempBuffer; + DecompressFunc *lpCFuncTable; + + if (!lpdwDecompressedSize) { + SErrSetLastError(ERROR_INVALID_PARAMETER); + return FALSE; + } + + dwDecompressedSize = *lpdwDecompressedSize; + + if (dwDecompressedSize < dwCompressedSize || !lpvDestinationMem || !lpvSourceMem || dwCompressedSize < 1) { + SErrSetLastError(ERROR_INVALID_PARAMETER); + return FALSE; + } + + if (dwCompressedSize == dwDecompressedSize) { + if (lpvDestinationMem == lpvSourceMem) + return TRUE; + + SMemCopy(lpvDestinationMem,lpvSourceMem,dwCompressedSize); + return TRUE; + } + + dwCompressCount = 0; + dwCompressTypes = *(LPBYTE)lpvSourceMem; + lpvInBuffer = (LPVOID)((LPBYTE)lpvSourceMem+1); + dwCompressedSize--; + dwTempFlags = dwCompressTypes; + lpCFuncTable = lpLastDecompressMethod; + + do { + dwCurFlag = lpCFuncTable->dwFlag; + + if (dwCompressTypes & dwCurFlag) { + dwCompressCount++; + } + + dwTempFlags &= ~dwCurFlag; + lpCFuncTable--;; + } while (lpCFuncTable >= DecompressionFunctions); + + if (dwTempFlags) { + return FALSE; + } + + lpvWorkBuffer = 0; + + if (dwCompressCount >= 2 + || !((LPBYTE)lpvDestinationMem+dwCompressedSize <= (LPBYTE)lpvInBuffer + || (LPBYTE)lpvInBuffer+dwCompressedSize <= (LPBYTE)lpvDestinationMem + || !dwCompressCount)) + { + lpvWorkBuffer = SMemAlloc(dwDecompressedSize); + + if (!lpvWorkBuffer) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return FALSE; + } + } + + lpCFuncTable = lpLastDecompressMethod; + + do { + if (dwCompressTypes & lpCFuncTable->dwFlag) { + lpvOutBuffer = lpvWorkBuffer; + dwCompressCount--; + + if (!(dwCompressCount & 1)) { + lpvOutBuffer = lpvDestinationMem; + } + + if ((LPBYTE)lpvOutBuffer+dwCompressedSize > (LPBYTE)lpvInBuffer + && (LPBYTE)lpvInBuffer+dwCompressedSize > (LPBYTE)lpvOutBuffer) + { + if ((LPBYTE)lpvOutBuffer+dwCompressedSize <= (LPBYTE)lpvWorkBuffer) { + lpvOutBuffer = lpvWorkBuffer; + } + else { + lpvTempBuffer = lpvOutBuffer; + lpvOutBuffer = lpvDestinationMem; + + if ((LPBYTE)lpvWorkBuffer+dwCompressedSize <= (LPBYTE)lpvTempBuffer) + lpvOutBuffer = lpvWorkBuffer; + } + } + + dwOutSize = dwDecompressedSize; + lpCFuncTable->fnDecompress(lpvOutBuffer,&dwOutSize,lpvInBuffer,dwCompressedSize); + dwCompressedSize = dwOutSize; + lpvInBuffer = lpvOutBuffer; + } + + lpCFuncTable--; + } while (lpCFuncTable >= DecompressionFunctions); + + if (lpvInBuffer != lpvDestinationMem) { + SMemCopy(lpvDestinationMem,lpvInBuffer,dwCompressedSize); + } + + *lpdwDecompressedSize = dwCompressedSize; + + if (lpvWorkBuffer) { + SMemFree(lpvWorkBuffer); + } + + return TRUE; +} + +void __fastcall InitWaveCompress(DWORD dwCompressLevel, LPDWORD *lplpdwCompressionSubType, LPDWORD lpdwCompressionSubType) +{ + if (dwCompressLevel) { + if (dwCompressLevel <= 2) { + *(LPBYTE)lplpdwCompressionSubType = 4; + *lpdwCompressionSubType = 6; + return; + } + else if (dwCompressLevel == 3) { + *(LPBYTE)lplpdwCompressionSubType = 6; + *lpdwCompressionSubType = 8; + return; + } + } + + *(LPBYTE)lplpdwCompressionSubType = 5; + *lpdwCompressionSubType = 7; +} + +void __fastcall CompressWaveMono(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel) +{ + InitWaveCompress(dwCompressLevel,&lpdwCompressionSubType,lpdwCompressionSubType); + *lpdwCompressedSize = CompressWave((LPBYTE)lpvDestinationMem,*lpdwCompressedSize,(short *)lpvSourceMem,dwDecompressedSize,1,(unsigned int)lpdwCompressionSubType & 0xFF); +} + +void __fastcall CompressWaveStereo(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel) +{ + InitWaveCompress(dwCompressLevel,&lpdwCompressionSubType,lpdwCompressionSubType); + *lpdwCompressedSize = CompressWave((LPBYTE)lpvDestinationMem,*lpdwCompressedSize,(short *)lpvSourceMem,dwDecompressedSize,2,(unsigned int)lpdwCompressionSubType & 0xFF); +} + +void __fastcall HuffmanCompress(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel) +{ + THuffmannTree *ht; // Huffmann tree for compression + TOutputStream os; // Output stream + THTreeItem * pItem; + int nCount; + + ht = (THuffmannTree *)SMemAlloc(sizeof(THuffmannTree)); + + if (!ht) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return; + } + + // Initialize output stream + os.pbOutBuffer = (unsigned char *)lpvDestinationMem; + os.dwOutSize = *lpdwCompressedSize; + os.pbOutPos = (unsigned char *)lpvDestinationMem; + os.dwBitBuff = 0; + os.nBits = 0; + + // Clear links for all the items in the tree + for(pItem = ht->items0008, nCount = 0x203; nCount != 0; nCount--, pItem++) + pItem->ClearItemLinks(); + + ht->pItem3054 = NULL; + ht->pItem3054 = PTR_PTR(&ht->pItem3054); + ht->pItem3058 = PTR_NOT(&ht->pItem3054); + + ht->pItem305C = NULL; + ht->pFirst = PTR_PTR(&ht->pFirst); + ht->pLast = PTR_NOT(&ht->pFirst); + + ht->offs0004 = 1; + ht->nItems = 0; + + *lpdwCompressedSize = ht->DoCompression(&os, (unsigned char *)lpvSourceMem, dwDecompressedSize, *lpdwCompressionSubType); +/* + // The following code is not necessary to run, because it has no + // effect on the output data. It only clears the huffmann tree, but when + // the tree is on the stack, who cares ? + while(PTR_INT(ht.pLast) > 0) + { + pItem = ht.pItem305C->Call1501DB70(ht.pLast); + pItem->RemoveItem(); + } + + for(pItem = ht.pFirst; PTR_INT(ht.pItem3058) > 0; pItem = ht.pItem3058) + pItem->RemoveItem(); + PTR_PTR(&ht.pItem3054)->RemoveItem(); + + for(pItem = ht.items0008 + 0x203, nCount = 0x203; nCount != 0; nCount--) + { + pItem--; + pItem->RemoveItem(); + pItem->RemoveItem(); + } +*/ +} + +#ifdef USE_ZLIB + +void __fastcall Deflate(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel) +{ + if (*lpdwCompressionSubType == 0) { + switch (dwCompressLevel) { + case 1: + dwCompressLevel = Z_BEST_COMPRESSION; + break; + case 2: + dwCompressLevel = Z_BEST_SPEED; + break; + default: + dwCompressLevel = (DWORD)Z_DEFAULT_COMPRESSION; + } + } + + compress2((LPBYTE)lpvDestinationMem,lpdwCompressedSize,(LPBYTE)lpvSourceMem,dwDecompressedSize,dwCompressLevel); + *lpdwCompressionSubType = 0; +} + +#endif + +void __fastcall Implode(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, LPDWORD lpdwCompressionSubType, DWORD dwCompressLevel) +{ + BUFFERINFO BufferInfo; + unsigned int dwCompType, dwDictSize; + LPVOID lpvWorkBuffer; + + lpvWorkBuffer = SMemAlloc(CMP_BUFFER_SIZE); + + if (!lpvWorkBuffer) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return; + } + + BufferInfo.lpvSourceMem = lpvSourceMem; + BufferInfo.dwSrcStart = 0; + BufferInfo.dwSrcLen = dwDecompressedSize; + BufferInfo.lpvDestinationMem = lpvDestinationMem; + BufferInfo.dwDestStart = 0; + BufferInfo.dwDestLen = *lpdwCompressedSize; + + dwCompType = (*lpdwCompressionSubType==2)?CMP_ASCII:CMP_BINARY; + + if (dwDecompressedSize >= 0xC00) { + dwDictSize = 0x1000; + } + else if (dwDecompressedSize < 0x600) { + dwDictSize = 0x400; + } + else { + dwDictSize = 0x800; + } + + implode(FillInput,FillOutput,(char *)lpvWorkBuffer,&BufferInfo,&dwCompType,&dwDictSize); + *lpdwCompressedSize = BufferInfo.dwDestStart; + *lpdwCompressionSubType = 0; + + SMemFree(lpvWorkBuffer); +} + +void __fastcall DecompressWaveMono(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + *lpdwDecompressedSize = DecompressWave((LPBYTE)lpvDestinationMem,*lpdwDecompressedSize,(LPBYTE)lpvSourceMem,dwCompressedSize,1); +} + +void __fastcall DecompressWaveStereo(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + *lpdwDecompressedSize = DecompressWave((LPBYTE)lpvDestinationMem,*lpdwDecompressedSize,(LPBYTE)lpvSourceMem,dwCompressedSize,2); +} + +void __fastcall HuffmanDecompress(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + THuffmannTree *ht; + TInputStream is; + THTreeItem * pItem; + unsigned int nCount; + + ht = (THuffmannTree *)SMemAlloc(sizeof(THuffmannTree)); + + if (!ht) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return; + } + + // Initialize input stream + is.pbInBuffer = (unsigned char *)lpvSourceMem; + is.dwBitBuff = *(unsigned long *)lpvSourceMem; + is.pbInBuffer += sizeof(unsigned long); + is.nBits = 32; + + // Initialize the Huffman tree + for(pItem = ht->items0008, nCount = 0x203; nCount != 0; pItem++, nCount--) + pItem->ClearItemLinks(); + + ht->pItem3050 = NULL; + ht->pItem3054 = PTR_PTR(&ht->pItem3054); + ht->pItem3058 = PTR_NOT(ht->pItem3054); + + ht->pItem305C = NULL; + ht->pFirst = PTR_PTR(&ht->pFirst); + ht->pLast = PTR_NOT(ht->pFirst); + + ht->offs0004 = 1; + ht->nItems = 0; + + // Clear all TQDecompress items + for(nCount = 0; nCount < sizeof(ht->qd3474) / sizeof(TQDecompress); nCount++) + ht->qd3474[nCount].offs00 = 0; + + *lpdwDecompressedSize = ht->DoDecompression((unsigned char *)lpvDestinationMem, *lpdwDecompressedSize, &is); +/* + // The following code is not necessary to run, because it has no + // effect on the output data. It only clears the huffmann tree, but when + // the tree is on the stack, who cares ? + while(PTR_INT(ht.pLast) > 0) + { + pItem = ht.pItem305C->Call1501DB70(ht.pLast); + pItem->RemoveItem(); + } + + for(pItem = ht.pFirst; PTR_INT(ht.pItem3058) > 0; pItem = ht.pItem3058) + pItem->RemoveItem(); + PTR_PTR(&ht.pItem3054)->RemoveItem(); + + for(pItem = ht.items0008 + 0x203, nCount = 0x203; nCount != 0; nCount--) + { + pItem--; + pItem->RemoveItem(); + pItem->RemoveItem(); + } +*/ + + SMemFree(ht); +} + +#ifdef USE_ZLIB + +void __fastcall Inflate(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + uncompress((LPBYTE)lpvDestinationMem,lpdwDecompressedSize,(LPBYTE)lpvSourceMem,dwCompressedSize); +} + +#endif + +void __fastcall Explode(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize) +{ + BUFFERINFO BufferInfo; + LPVOID lpvWorkBuffer; + + lpvWorkBuffer = SMemAlloc(EXP_BUFFER_SIZE); + + if (!lpvWorkBuffer) { + SErrSetLastError(ERROR_NOT_ENOUGH_MEMORY); + return; + } + + BufferInfo.lpvSourceMem = lpvSourceMem; + BufferInfo.dwSrcStart = 0; + BufferInfo.dwSrcLen = dwCompressedSize; + BufferInfo.lpvDestinationMem = lpvDestinationMem; + BufferInfo.dwDestStart = 0; + BufferInfo.dwDestLen = *lpdwDecompressedSize; + + explode(FillInput,FillOutput,(char *)lpvWorkBuffer,&BufferInfo); + *lpdwDecompressedSize = BufferInfo.dwDestStart; + + SMemFree(lpvWorkBuffer); +} + +unsigned int FillInput(char *lpvBuffer, unsigned int *lpdwSize, void *param) +{ + DWORD dwBufferSize; + BUFFERINFO *lpBufferInfo = (BUFFERINFO *)param; + + dwBufferSize = *lpdwSize; + + if (dwBufferSize >= lpBufferInfo->dwSrcLen - lpBufferInfo->dwSrcStart) { + dwBufferSize = lpBufferInfo->dwSrcLen - lpBufferInfo->dwSrcStart; + } + + SMemCopy(lpvBuffer,(LPBYTE)lpBufferInfo->lpvSourceMem+lpBufferInfo->dwSrcStart,dwBufferSize); + lpBufferInfo->dwSrcStart += dwBufferSize; + return dwBufferSize; +} + +void FillOutput(char *lpvBuffer, unsigned int *lpdwSize, void *param) +{ + DWORD dwBufferSize; + BUFFERINFO *lpBufferInfo = (BUFFERINFO *)param; + + dwBufferSize = *lpdwSize; + + if (dwBufferSize >= lpBufferInfo->dwDestLen - lpBufferInfo->dwDestStart) { + dwBufferSize = lpBufferInfo->dwDestLen - lpBufferInfo->dwDestStart; + } + + SMemCopy((LPBYTE)lpBufferInfo->lpvDestinationMem+lpBufferInfo->dwDestStart,lpvBuffer,dwBufferSize); + lpBufferInfo->dwDestStart += dwBufferSize; +} + diff --git a/SComp.h b/SComp.h new file mode 100644 index 0000000..37a8e93 --- /dev/null +++ b/SComp.h @@ -0,0 +1,25 @@ +// SComp.h - Header for main compression/decompression routines +// License information for this code is in license.txt + +#ifndef S_COMP_INCLUDED +#define S_COMP_INCLUDED + +#if (defined(_WIN32) || defined(WIN32)) && !defined(NO_WINDOWS_H) +#include +#else +#include "wintypes.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +BOOL WINAPI SCompCompress(LPVOID lpvDestinationMem, LPDWORD lpdwCompressedSize, LPVOID lpvSourceMem, DWORD dwDecompressedSize, DWORD dwCompressionType, DWORD dwCompressionSubType, DWORD dwCompressLevel); +BOOL WINAPI SCompDecompress(LPVOID lpvDestinationMem, LPDWORD lpdwDecompressedSize, LPVOID lpvSourceMem, DWORD dwCompressedSize); + +#ifdef __cplusplus +}; // extern "C" +#endif + +#endif + diff --git a/SErr.cpp b/SErr.cpp new file mode 100644 index 0000000..63c9c08 --- /dev/null +++ b/SErr.cpp @@ -0,0 +1,35 @@ +// SErr.cpp - SetLastError routine +// +// Converted from assembly to C++ by ShadowFlare. +// E-mail : blakflare@hotmail.com +// Webpage : http://sfsrealm.hopto.org/ +// License information for this code is in license.txt + + +#include "SErr.h" + +DWORD dwLastError; + +#if (defined(_WIN32) || defined(WIN32)) && !defined(NO_WINDOWS_H) + +DWORD WINAPI SErrSetLastError(DWORD dwErrorCode) +{ + dwLastError = dwErrorCode; + SetLastError(dwErrorCode); + return dwErrorCode; +} + +#else + +DWORD WINAPI SErrSetLastError(DWORD dwErrorCode) +{ + return (dwLastError = dwErrorCode); +} + +#endif + +DWORD WINAPI SErrGetLastError(VOID) +{ + return dwLastError; +} + diff --git a/SErr.h b/SErr.h new file mode 100644 index 0000000..25dae28 --- /dev/null +++ b/SErr.h @@ -0,0 +1,25 @@ +// SErr.h - Header for SetLastError routine +// License information for this code is in license.txt + +#ifndef S_ERR_INCLUDED +#define S_ERR_INCLUDED + +#if (defined(_WIN32) || defined(WIN32)) && !defined(NO_WINDOWS_H) +#include +#else +#include "wintypes.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +DWORD WINAPI SErrSetLastError(DWORD dwErrorCode); +DWORD WINAPI SErrGetLastError(VOID); + +#ifdef __cplusplus +}; // extern "C" +#endif + +#endif + diff --git a/SMem.cpp b/SMem.cpp new file mode 100644 index 0000000..aeea895 --- /dev/null +++ b/SMem.cpp @@ -0,0 +1,66 @@ +// SMem.cpp - Memory functions +// +// Converted from assembly to C++ by ShadowFlare. +// E-mail : blakflare@hotmail.com +// Webpage : http://sfsrealm.hopto.org/ +// License information for this code is in license.txt + + +#include "SMem.h" +#include + +LPVOID WINAPI SMemAlloc(DWORD dwSize) +{ + LPVOID lpMemory = malloc(dwSize); + if (lpMemory) SMemZero(lpMemory,dwSize); + return lpMemory; +} + +void WINAPI SMemFree(LPVOID lpvMemory) +{ + if (lpvMemory) free(lpvMemory); +} + +DWORD WINAPI SMemCopy(LPVOID lpDestination, LPCVOID lpSource, DWORD dwLength) +{ + DWORD dwPrevLen = dwLength; + LPDWORD lpdwDestination = (LPDWORD)lpDestination,lpdwSource = (LPDWORD)lpSource; + LPBYTE lpbyDestination,lpbySource; + + dwLength >>= 2; + + while (dwLength--) + *lpdwDestination++ = *lpdwSource++; + + lpbyDestination = (LPBYTE)lpdwDestination; + lpbySource = (LPBYTE)lpdwSource; + + dwLength = dwPrevLen; + dwLength &= 3; + + while (dwLength--) + *lpbyDestination++ = *lpbySource++; + + return dwPrevLen; +} + +void WINAPI SMemZero(LPVOID lpDestination, DWORD dwLength) +{ + DWORD dwPrevLen = dwLength; + LPDWORD lpdwDestination = (LPDWORD)lpDestination; + LPBYTE lpbyDestination; + + dwLength >>= 2; + + while (dwLength--) + *lpdwDestination++ = 0; + + lpbyDestination = (LPBYTE)lpdwDestination; + + dwLength = dwPrevLen; + dwLength &= 3; + + while (dwLength--) + *lpbyDestination++ = 0; +} + diff --git a/SMem.h b/SMem.h new file mode 100644 index 0000000..9238a4d --- /dev/null +++ b/SMem.h @@ -0,0 +1,27 @@ +// SMem.h - Header for memory functions +// License information for this code is in license.txt + +#ifndef S_MEM_INCLUDED +#define S_MEM_INCLUDED + +#if (defined(_WIN32) || defined(WIN32)) && !defined(NO_WINDOWS_H) +#include +#else +#include "wintypes.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +LPVOID WINAPI SMemAlloc(DWORD dwSize); +void WINAPI SMemFree(LPVOID lpvMemory); +DWORD WINAPI SMemCopy(LPVOID lpDestination, LPCVOID lpSource, DWORD dwLength); +void WINAPI SMemZero(LPVOID lpDestination, DWORD dwLength); + +#ifdef __cplusplus +}; // extern "C" +#endif + +#endif + diff --git a/ZLib_Static_min.lib b/ZLib_Static_min.lib new file mode 100644 index 0000000..dce1150 Binary files /dev/null and b/ZLib_Static_min.lib differ diff --git a/crc32.c b/crc32.c new file mode 100644 index 0000000..a7f5210 --- /dev/null +++ b/crc32.c @@ -0,0 +1,72 @@ +/*****************************************************************************/ +/* crc32.c Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Pkware Data Compression Library Version 1.11 */ +/* Dissassembled method crc32 - cdecl version */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 09.04.03 1.00 Lad The first version of crc32.c */ +/* 02.05.03 1.00 Lad Stress test done */ +/*****************************************************************************/ + +#include "pklib.h" + +static char CopyRight[] = "PKWARE Data Compression Library for Win32\r\n" + "Copyright 1989-1995 PKWARE Inc. All Rights Reserved\r\n" + "Patent No. 5,051,745\r\n" + "PKWARE Data Compression Library Reg. U.S. Pat. and Tm. Off.\r\n" + "Version 1.11\r\n"; + +static unsigned long crc_table[] = +{ + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, + 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, + 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, + 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, + 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, + 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, + 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, + 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, + 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, + 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, + 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, + 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, + 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, + 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, + 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, + 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, + 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, + 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, + 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, + 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, + 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, + 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D +}; + + +unsigned long PKEXPORT crc32pk(char * buffer, unsigned int * psize, unsigned long * old_crc) +{ + unsigned int size = *psize; + unsigned long ch; + unsigned long crc_value = *old_crc; + + while(size-- != 0) + { + ch = *buffer++ ^ (char)crc_value; + crc_value >>= 8; + + crc_value = crc_table[ch & 0x0FF] ^ crc_value; + } + return crc_value; +} diff --git a/explode.c b/explode.c new file mode 100644 index 0000000..50cde3a --- /dev/null +++ b/explode.c @@ -0,0 +1,503 @@ +/*****************************************************************************/ +/* explode.c Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Explode function of PKWARE Data Compression library */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 11.03.03 1.00 Lad Splitted from Pkware.cpp */ +/* 08.04.03 1.01 Lad Renamed to explode.c to be compatible with pklib */ +/* 02.05.03 1.01 Lad Stress test done */ +/*****************************************************************************/ + +#include "pklib.h" +#include "SMem.h" + +//----------------------------------------------------------------------------- +// Local structures + +// Compression structure (Size 12596 bytes) +typedef struct +{ + unsigned long offs0000; // 0000 + unsigned long ctype; // 0004 - Compression type (CMP_BINARY or CMP_ASCII) + unsigned long outputPos; // 0008 - Position in output buffer + unsigned long dsize_bits; // 000C - Dict size (4, 5, 6 for 0x400, 0x800, 0x1000) + unsigned long dsize_mask; // 0010 - Dict size bitmask (0x0F, 0x1F, 0x3F for 0x400, 0x800, 0x1000) + unsigned long bit_buff; // 0014 - 16-bit buffer for processing input data + unsigned long extra_bits; // 0018 - Number of extra (above 8) bits in bit buffer + unsigned int in_pos; // 001C - Position in in_buff + unsigned long in_bytes; // 0020 - Number of bytes in input buffer + void * param; // 0024 - Custom parameter + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param); // 0028 + void (*write_buf)(char *buf, unsigned int *size, void *param);// 002C + unsigned char out_buff[0x2000]; // 0030 - Output circle buffer. Starting position is 0x1000 + unsigned char offs2030[0x204]; // 2030 - ??? + unsigned char in_buff[0x800]; // 2234 - Buffer for data to be decompressed + unsigned char position1[0x100]; // 2A34 - Positions in buffers + unsigned char position2[0x100]; // 2B34 - Positions in buffers + unsigned char offs2C34[0x100]; // 2C34 - Buffer for + unsigned char offs2D34[0x100]; // 2D34 - Buffer for + unsigned char offs2E34[0x80]; // 2EB4 - Buffer for + unsigned char offs2EB4[0x100]; // 2EB4 - Buffer for + unsigned char ChBitsAsc[0x100]; // 2FB4 - Buffer for + unsigned char DistBits[0x40]; // 30B4 - Numbers of bytes to skip copied block length + unsigned char LenBits[0x10]; // 30F4 - Numbers of bits for skip copied block length + unsigned char ExLenBits[0x10]; // 3104 - Number of valid bits for copied block + unsigned short LenBase[0x10]; // 3114 - Buffer for +} TDcmpStruct; + +//----------------------------------------------------------------------------- +// Tables + +static unsigned char DistBits[] = +{ + 0x02, 0x04, 0x04, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, + 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, + 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 +}; + +static unsigned char DistCode[] = +{ + 0x03, 0x0D, 0x05, 0x19, 0x09, 0x11, 0x01, 0x3E, 0x1E, 0x2E, 0x0E, 0x36, 0x16, 0x26, 0x06, 0x3A, + 0x1A, 0x2A, 0x0A, 0x32, 0x12, 0x22, 0x42, 0x02, 0x7C, 0x3C, 0x5C, 0x1C, 0x6C, 0x2C, 0x4C, 0x0C, + 0x74, 0x34, 0x54, 0x14, 0x64, 0x24, 0x44, 0x04, 0x78, 0x38, 0x58, 0x18, 0x68, 0x28, 0x48, 0x08, + 0xF0, 0x70, 0xB0, 0x30, 0xD0, 0x50, 0x90, 0x10, 0xE0, 0x60, 0xA0, 0x20, 0xC0, 0x40, 0x80, 0x00 +}; + +static unsigned char ExLenBits[] = +{ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 +}; + +static unsigned short LenBase[] = +{ + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, + 0x0008, 0x000A, 0x000E, 0x0016, 0x0026, 0x0046, 0x0086, 0x0106 +}; + +static unsigned char LenBits[] = +{ + 0x03, 0x02, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x07, 0x07 +}; + +static unsigned char LenCode[] = +{ + 0x05, 0x03, 0x01, 0x06, 0x0A, 0x02, 0x0C, 0x14, 0x04, 0x18, 0x08, 0x30, 0x10, 0x20, 0x40, 0x00 +}; + +static unsigned char ChBitsAsc[] = +{ + 0x0B, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x08, 0x07, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0D, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x04, 0x0A, 0x08, 0x0C, 0x0A, 0x0C, 0x0A, 0x08, 0x07, 0x07, 0x08, 0x09, 0x07, 0x06, 0x07, 0x08, + 0x07, 0x06, 0x07, 0x07, 0x07, 0x07, 0x08, 0x07, 0x07, 0x08, 0x08, 0x0C, 0x0B, 0x07, 0x09, 0x0B, + 0x0C, 0x06, 0x07, 0x06, 0x06, 0x05, 0x07, 0x08, 0x08, 0x06, 0x0B, 0x09, 0x06, 0x07, 0x06, 0x06, + 0x07, 0x0B, 0x06, 0x06, 0x06, 0x07, 0x09, 0x08, 0x09, 0x09, 0x0B, 0x08, 0x0B, 0x09, 0x0C, 0x08, + 0x0C, 0x05, 0x06, 0x06, 0x06, 0x05, 0x06, 0x06, 0x06, 0x05, 0x0B, 0x07, 0x05, 0x06, 0x05, 0x05, + 0x06, 0x0A, 0x05, 0x05, 0x05, 0x05, 0x08, 0x07, 0x08, 0x08, 0x0A, 0x0B, 0x0B, 0x0C, 0x0C, 0x0C, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, + 0x0D, 0x0D, 0x0C, 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D +}; + +static unsigned short ChCodeAsc[] = +{ + 0x0490, 0x0FE0, 0x07E0, 0x0BE0, 0x03E0, 0x0DE0, 0x05E0, 0x09E0, + 0x01E0, 0x00B8, 0x0062, 0x0EE0, 0x06E0, 0x0022, 0x0AE0, 0x02E0, + 0x0CE0, 0x04E0, 0x08E0, 0x00E0, 0x0F60, 0x0760, 0x0B60, 0x0360, + 0x0D60, 0x0560, 0x1240, 0x0960, 0x0160, 0x0E60, 0x0660, 0x0A60, + 0x000F, 0x0250, 0x0038, 0x0260, 0x0050, 0x0C60, 0x0390, 0x00D8, + 0x0042, 0x0002, 0x0058, 0x01B0, 0x007C, 0x0029, 0x003C, 0x0098, + 0x005C, 0x0009, 0x001C, 0x006C, 0x002C, 0x004C, 0x0018, 0x000C, + 0x0074, 0x00E8, 0x0068, 0x0460, 0x0090, 0x0034, 0x00B0, 0x0710, + 0x0860, 0x0031, 0x0054, 0x0011, 0x0021, 0x0017, 0x0014, 0x00A8, + 0x0028, 0x0001, 0x0310, 0x0130, 0x003E, 0x0064, 0x001E, 0x002E, + 0x0024, 0x0510, 0x000E, 0x0036, 0x0016, 0x0044, 0x0030, 0x00C8, + 0x01D0, 0x00D0, 0x0110, 0x0048, 0x0610, 0x0150, 0x0060, 0x0088, + 0x0FA0, 0x0007, 0x0026, 0x0006, 0x003A, 0x001B, 0x001A, 0x002A, + 0x000A, 0x000B, 0x0210, 0x0004, 0x0013, 0x0032, 0x0003, 0x001D, + 0x0012, 0x0190, 0x000D, 0x0015, 0x0005, 0x0019, 0x0008, 0x0078, + 0x00F0, 0x0070, 0x0290, 0x0410, 0x0010, 0x07A0, 0x0BA0, 0x03A0, + 0x0240, 0x1C40, 0x0C40, 0x1440, 0x0440, 0x1840, 0x0840, 0x1040, + 0x0040, 0x1F80, 0x0F80, 0x1780, 0x0780, 0x1B80, 0x0B80, 0x1380, + 0x0380, 0x1D80, 0x0D80, 0x1580, 0x0580, 0x1980, 0x0980, 0x1180, + 0x0180, 0x1E80, 0x0E80, 0x1680, 0x0680, 0x1A80, 0x0A80, 0x1280, + 0x0280, 0x1C80, 0x0C80, 0x1480, 0x0480, 0x1880, 0x0880, 0x1080, + 0x0080, 0x1F00, 0x0F00, 0x1700, 0x0700, 0x1B00, 0x0B00, 0x1300, + 0x0DA0, 0x05A0, 0x09A0, 0x01A0, 0x0EA0, 0x06A0, 0x0AA0, 0x02A0, + 0x0CA0, 0x04A0, 0x08A0, 0x00A0, 0x0F20, 0x0720, 0x0B20, 0x0320, + 0x0D20, 0x0520, 0x0920, 0x0120, 0x0E20, 0x0620, 0x0A20, 0x0220, + 0x0C20, 0x0420, 0x0820, 0x0020, 0x0FC0, 0x07C0, 0x0BC0, 0x03C0, + 0x0DC0, 0x05C0, 0x09C0, 0x01C0, 0x0EC0, 0x06C0, 0x0AC0, 0x02C0, + 0x0CC0, 0x04C0, 0x08C0, 0x00C0, 0x0F40, 0x0740, 0x0B40, 0x0340, + 0x0300, 0x0D40, 0x1D00, 0x0D00, 0x1500, 0x0540, 0x0500, 0x1900, + 0x0900, 0x0940, 0x1100, 0x0100, 0x1E00, 0x0E00, 0x0140, 0x1600, + 0x0600, 0x1A00, 0x0E40, 0x0640, 0x0A40, 0x0A00, 0x1200, 0x0200, + 0x1C00, 0x0C00, 0x1400, 0x0400, 0x1800, 0x0800, 0x1000, 0x0000 +}; + +//----------------------------------------------------------------------------- +// Local variables + +static char Copyright[] = "PKWARE Data Compression Library for Win32\r\n" + "Copyright 1989-1995 PKWARE Inc. All Rights Reserved\r\n" + "Patent No. 5,051,745\r\n" + "PKWARE Data Compression Library Reg. U.S. Pat. and Tm. Off.\r\n" + "Version 1.11"; + +//----------------------------------------------------------------------------- +// Local functions + +static void GenDecodeTabs(long count, unsigned char * bits, unsigned char * pCode, unsigned char * buffer2) +{ + long i; + + for(i = count-1; i >= 0; i--) // EBX - count + { + unsigned long idx1 = pCode[i]; + unsigned long idx2 = 1 << bits[i]; + + do + { + buffer2[idx1] = (unsigned char)i; + idx1 += idx2; + } + while(idx1 < 0x100); + } +} + +static void GenAscTabs(TDcmpStruct * pWork) +{ + unsigned short * pChCodeAsc = &ChCodeAsc[0xFF]; + unsigned long acc, add; + unsigned short count; + + for(count = 0x00FF; pChCodeAsc >= ChCodeAsc; pChCodeAsc--, count--) + { + unsigned char * pChBitsAsc = pWork->ChBitsAsc + count; + unsigned char bits_asc = *pChBitsAsc; + + if(bits_asc <= 8) + { + add = (1 << bits_asc); + acc = *pChCodeAsc; + + do + { + pWork->offs2C34[acc] = (unsigned char)count; + acc += add; + } + while(acc < 0x100); + } + else if((acc = (*pChCodeAsc & 0xFF)) != 0) + { + pWork->offs2C34[acc] = 0xFF; + + if(*pChCodeAsc & 0x3F) + { + bits_asc -= 4; + *pChBitsAsc = bits_asc; + + add = (1 << bits_asc); + acc = *pChCodeAsc >> 4; + do + { + pWork->offs2D34[acc] = (unsigned char)count; + acc += add; + } + while(acc < 0x100); + } + else + { + bits_asc -= 6; + *pChBitsAsc = bits_asc; + + add = (1 << bits_asc); + acc = *pChCodeAsc >> 6; + do + { + pWork->offs2E34[acc] = (unsigned char)count; + acc += add; + } + while(acc < 0x80); + } + } + else + { + bits_asc -= 8; + *pChBitsAsc = bits_asc; + + add = (1 << bits_asc); + acc = *pChCodeAsc >> 8; + do + { + pWork->offs2EB4[acc] = (unsigned char)count; + acc += add; + } + while(acc < 0x100); + } + } +} + +//----------------------------------------------------------------------------- +// Skips given number of bits in bit buffer. Result is stored in pWork->bit_buff +// If no data in input buffer, returns true + +static int WasteBits(TDcmpStruct * pWork, unsigned long nBits) +{ + // If number of bits required is less than number of (bits in the buffer) ? + if(nBits <= pWork->extra_bits) + { + pWork->extra_bits -= nBits; + pWork->bit_buff >>= nBits; + return 0; + } + + // Load input buffer if necessary + pWork->bit_buff >>= pWork->extra_bits; + if(pWork->in_pos == pWork->in_bytes) + { + pWork->in_pos = sizeof(pWork->in_buff); + if((pWork->in_bytes = pWork->read_buf((char *)pWork->in_buff, &pWork->in_pos, pWork->param)) == 0) + return 1; + pWork->in_pos = 0; + } + + // Update bit buffer + pWork->bit_buff |= (pWork->in_buff[pWork->in_pos++] << 8); + pWork->bit_buff >>= (nBits - pWork->extra_bits); + pWork->extra_bits = (pWork->extra_bits - nBits) + 8; + return 0; +} + +//----------------------------------------------------------------------------- +// Returns : 0x000 - 0x0FF : One byte from compressed file. +// 0x100 - 0x305 : Copy previous block (0x100 = 1 byte) +// 0x306 : Out of buffer (?) + +static unsigned long DecodeLit(TDcmpStruct * pWork) +{ + unsigned long nBits; // Number of bits to skip + unsigned long value; // Position in buffers + + // Test the current bit in byte buffer. If is not set, simply return the next byte. + if(pWork->bit_buff & 1) + { + // Skip current bit in the buffer + if(WasteBits(pWork, 1)) + return 0x306; + + // The next bits are position in buffers + value = pWork->position2[(pWork->bit_buff & 0xFF)]; + + // Get number of bits to skip + if(WasteBits(pWork, pWork->LenBits[value])) + return 0x306; + + if((nBits = pWork->ExLenBits[value]) != 0) + { + unsigned long val2 = pWork->bit_buff & ((1 << nBits) - 1); + + if(WasteBits(pWork, nBits)) + { + if((value + val2) != 0x10E) + return 0x306; + } + value = pWork->LenBase[value] + val2; + } + return value + 0x100; // Return number of bytes to repeat + } + + // Waste one bit + if(WasteBits(pWork, 1)) + return 0x306; + + // If the binary compression type, read 8 bits and return them as one byte. + if(pWork->ctype == CMP_BINARY) + { + value = pWork->bit_buff & 0xFF; + if(WasteBits(pWork, 8)) + return 0x306; + return value; + } + + // When ASCII compression ... + if(pWork->bit_buff & 0xFF) + { + value = pWork->offs2C34[pWork->bit_buff & 0xFF]; + + if(value == 0xFF) + { + if(pWork->bit_buff & 0x3F) + { + if(WasteBits(pWork, 4)) + return 0x306; + + value = pWork->offs2D34[pWork->bit_buff & 0xFF]; + } + else + { + if(WasteBits(pWork, 6)) + return 0x306; + + value = pWork->offs2E34[pWork->bit_buff & 0x7F]; + } + } + } + else + { + if(WasteBits(pWork, 8)) + return 0x306; + + value = pWork->offs2EB4[pWork->bit_buff & 0xFF]; + } + + return WasteBits(pWork, pWork->ChBitsAsc[value]) ? 0x306 : value; +} + +//----------------------------------------------------------------------------- +// Retrieves the number of bytes to move back + +static unsigned long DecodeDist(TDcmpStruct * pWork, unsigned long dwLength) +{ + unsigned long pos = pWork->position1[(pWork->bit_buff & 0xFF)]; + unsigned long nSkip = pWork->DistBits[pos]; // Number of bits to skip + + // Skip the appropriate number of bits + if(WasteBits(pWork, nSkip) == 1) + return 0; + + if(dwLength == 2) + { + pos = (pos << 2) | (pWork->bit_buff & 0x03); + + if(WasteBits(pWork, 2) == 1) + return 0; + } + else + { + pos = (pos << pWork->dsize_bits) | (pWork->bit_buff & pWork->dsize_mask); + + // Skip the bits + if(WasteBits(pWork, pWork->dsize_bits) == 1) + return 0; + } + return pos+1; +} + +static unsigned long Expand(TDcmpStruct * pWork) +{ + unsigned int copyBytes; // Number of bytes to copy + unsigned long oneByte; // One byte from compressed file + unsigned long dwResult; + + pWork->outputPos = 0x1000; // Initialize output buffer position + + // If end of data or error, terminate decompress + while((dwResult = oneByte = DecodeLit(pWork)) < 0x305) + { + // If one byte is greater than 0x100, means "Repeat n - 0xFE bytes" + if(oneByte >= 0x100) + { + unsigned char * source; // ECX + unsigned char * target; // EDX + unsigned long copyLength = oneByte - 0xFE; + unsigned long moveBack; + + // Get length of data to copy + if((moveBack = DecodeDist(pWork, copyLength)) == 0) + { + dwResult = 0x306; + break; + } + + // Target and source pointer + target = &pWork->out_buff[pWork->outputPos]; + source = target - moveBack; + pWork->outputPos += copyLength; + + while(copyLength-- > 0) + *target++ = *source++; + } + else + pWork->out_buff[pWork->outputPos++] = (unsigned char)oneByte; + + // If number of extracted bytes has reached 1/2 of output buffer, + // flush output buffer. + if(pWork->outputPos >= 0x2000) + { + // Copy decompressed data into user buffer + copyBytes = 0x1000; + pWork->write_buf((char *)&pWork->out_buff[0x1000], ©Bytes, pWork->param); + + // If there are some data left, keep them alive + SMemCopy(pWork->out_buff, &pWork->out_buff[0x1000], pWork->outputPos - 0x1000); + pWork->outputPos -= 0x1000; + } + } + + copyBytes = pWork->outputPos - 0x1000; + pWork->write_buf((char *)&pWork->out_buff[0x1000], ©Bytes, pWork->param); + return dwResult; +} + + +//----------------------------------------------------------------------------- +// Main exploding function. + +unsigned int PKEXPORT explode( + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param), + void (*write_buf)(char *buf, unsigned int *size, void *param), + char *work_buf, + void *param) +{ + TDcmpStruct * pWork = (TDcmpStruct *)work_buf; + + // Initialize work struct and load compressed data + pWork->read_buf = read_buf; + pWork->write_buf = write_buf; + pWork->param = param; + pWork->in_pos = sizeof(pWork->in_buff); + pWork->in_bytes = pWork->read_buf((char *)pWork->in_buff, &pWork->in_pos, pWork->param); + if(pWork->in_bytes <= 4) + return CMP_BAD_DATA; + + pWork->ctype = pWork->in_buff[0]; // Get the compression type + pWork->dsize_bits = pWork->in_buff[1]; // Get the dictionary size + pWork->bit_buff = pWork->in_buff[2]; // Initialize 16-bit bit buffer + pWork->extra_bits = 0; // Extra (over 8) bits + pWork->in_pos = 3; // Position in input buffer + + // Test for the valid dictionary size + if(4 > pWork->dsize_bits || pWork->dsize_bits > 6) + return CMP_INVALID_DICTSIZE; + + pWork->dsize_mask = 0xFFFF >> (0x10 - pWork->dsize_bits); // Shifted by 'sar' instruction + + if(pWork->ctype != CMP_BINARY) + { + if(pWork->ctype != CMP_ASCII) + return CMP_INVALID_MODE; + + SMemCopy(pWork->ChBitsAsc, ChBitsAsc, sizeof(pWork->ChBitsAsc)); + GenAscTabs(pWork); + } + + SMemCopy(pWork->LenBits, LenBits, sizeof(pWork->LenBits)); + GenDecodeTabs(0x10, pWork->LenBits, LenCode, pWork->position2); + SMemCopy(pWork->ExLenBits, ExLenBits, sizeof(pWork->ExLenBits)); + SMemCopy(pWork->LenBase, LenBase, sizeof(pWork->LenBase)); + SMemCopy(pWork->DistBits, DistBits, sizeof(pWork->DistBits)); + GenDecodeTabs(0x40, pWork->DistBits, DistCode, pWork->position1); + if(Expand(pWork) != 0x306) + return CMP_NO_ERROR; + + return CMP_ABORT; +} diff --git a/huffman.cpp b/huffman.cpp new file mode 100644 index 0000000..1fd9ba3 --- /dev/null +++ b/huffman.cpp @@ -0,0 +1,1387 @@ +/*****************************************************************************/ +/* huffman.cpp Copyright (c) Ladislav Zezula 1998-2003 */ +/*---------------------------------------------------------------------------*/ +/* This module contains Huffmann (de)compression methods */ +/* */ +/* Authors : Ladislav Zezula (ladik.zezula.net) */ +/* ShadowFlare (BlakFlare@hotmail.com) */ +/* */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* xx.xx.xx 1.00 Lad The first version of dcmp.cpp */ +/* 03.05.03 1.00 Lad Added compression methods */ +/*****************************************************************************/ + +#include "huffman.h" +#include "SMem.h" + +//----------------------------------------------------------------------------- +// Methods of the THTreeItem struct + +// 1501DB70 +THTreeItem * THTreeItem::Call1501DB70(THTreeItem * pLast) +{ + if(pLast == NULL) + pLast = this + 1; + return pLast; +} + +// Gets previous Huffman tree item (?) +THTreeItem * THTreeItem::GetPrevItem(long value) +{ + if(PTR_INT(prev) < 0) + return PTR_NOT(prev); + + if(value < 0) + value = this - next->prev; + return prev + value; + +// OLD VERSION +// if(PTR_INT(value) < 0) +// value = PTR_INT((item - item->next->prev)); +// return (THTreeItem *)((char *)prev + value); +} + +// 1500F5E0 +void THTreeItem::ClearItemLinks() +{ + next = prev = NULL; +} + +// 1500BC90 +void THTreeItem::RemoveItem() +{ + THTreeItem * pTemp; // EDX + + if(next != NULL) + { + pTemp = prev; + + if(PTR_INT(pTemp) <= 0) + pTemp = PTR_NOT(pTemp); + else + pTemp += (this - next->prev); + + pTemp->next = next; + next->prev = prev; + next = prev = NULL; + } +} + +/* +// OLD VERSION : Removes item from the tree (?) +static void RemoveItem(THTreeItem * item) +{ + THTreeItem * next = item->next; // ESI + THTreeItem * prev = item->prev; // EDX + + if(next == NULL) + return; + + if(PTR_INT(prev) < 0) + prev = PTR_NOT(prev); + else + // ??? usually item == next->prev, so what is it ? + prev = (THTreeItem *)((unsigned char *)prev + (unsigned long)((unsigned char *)item - (unsigned char *)(next->prev))); + + // Remove HTree item from the chain + prev->next = next; // Sets the 'first' pointer + next->prev = item->prev; + + // Invalidate pointers + item->next = NULL; + item->prev = NULL; +} +*/ + +//----------------------------------------------------------------------------- +// TOutputStream functions + +void TOutputStream::PutBits(unsigned long dwBuff, unsigned int nPutBits) +{ + dwBitBuff |= (dwBuff << nBits); + nBits += nPutBits; + + // Flush completed bytes + while(nBits >= 8) + { + if(dwOutSize != 0) + { + *pbOutPos++ = (unsigned char)dwBitBuff; + dwOutSize--; + } + + dwBitBuff >>= 8; + nBits -= 8; + } +} + +//----------------------------------------------------------------------------- +// TInputStream functions + +// Gets one bit from input stream +unsigned long TInputStream::GetBit() +{ + unsigned long dwBit = (dwBitBuff & 1); + + dwBitBuff >>= 1; + if(--nBits == 0) + { + dwBitBuff = *(unsigned long *)pbInBuffer; + pbInBuffer += sizeof(unsigned long); + nBits = 32; + } + return dwBit; +} + +// Gets 7 bits from the stream +unsigned long TInputStream::Get7Bits() +{ + if(nBits <= 7) + { + dwBitBuff |= *(unsigned short *)pbInBuffer << nBits; + pbInBuffer += sizeof(unsigned short); + nBits += 16; + } + + // Get 7 bits from input stream + return (dwBitBuff & 0x7F); +} + +// Gets the whole byte from the input stream. +unsigned long TInputStream::Get8Bits() +{ + unsigned long dwOneByte; + + if(nBits <= 8) + { + dwBitBuff |= *(unsigned short *)pbInBuffer << nBits; + pbInBuffer += sizeof(unsigned short); + nBits += 16; + } + + dwOneByte = (dwBitBuff & 0xFF); + dwBitBuff >>= 8; + nBits -= 8; + return dwOneByte; +} + +//----------------------------------------------------------------------------- +// Functions for huffmann tree items + +// Inserts item into the tree (?) +static void InsertItem(THTreeItem ** itemPtr, THTreeItem * item, unsigned long where, THTreeItem * item2) +{ + THTreeItem * next = item->next; // EDI - next to the first item + THTreeItem * prev = item->prev; // ESI - prev to the first item + long next2; // Pointer to the next item + THTreeItem * prev2; // Pointer to previous item + + // The same code like in RemoveItem(item); + if(next != 0) // If the first item already has next one + { + if(PTR_INT(prev) < 0) + prev = PTR_NOT(prev); + else + prev += (item - next->prev); + + // 150083C1 + // Remove the item from the tree + prev->next = next; + next->prev = prev; + + // Invalidate 'prev' and 'next' pointer + item->next = 0; + item->prev = 0; + } + + if(item2 == NULL) // EDX - If the second item is not entered, + item2 = PTR_PTR(&itemPtr[1]); // take the first tree item + + switch(where) + { + case SWITCH_ITEMS : // Switch the two items + item->next = item2->next; // item2->next (Pointer to pointer to first) + item->prev = item2->next->prev; + item2->next->prev = item; + item2->next = item; // Set the first item + return; + + case INSERT_ITEM: // Insert as the last item + item->next = item2; // Set next item (or pointer to pointer to first item) + item->prev = item2->prev; // Set prev item (or last item in the tree) + + next2 = PTR_INT(itemPtr[0]);// Usually NULL + prev2 = item2->prev; // Prev item to the second (or last tree item) + + if(PTR_INT(prev2) < 0) + { + prev2 = PTR_NOT(prev); + + prev2->next = item; + item2->prev = item; // Next after last item + return; + } + + if(next2 < 0) + next2 = item2 - item2->next->prev; +// next2 = (THTreeItem *)(unsigned long)((unsigned char *)item2 - (unsigned char *)(item2->next->prev)); + +// prev2 = (THTreeItem *)((char *)prev2 + (unsigned long)next2);// ??? + prev2 += next2; + prev2->next = item; + item2->prev = item; // Set the next/last item + return; + + default: + return; + } +} + +//----------------------------------------------------------------------------- +// THuffmannTree class functions + +// Builds Huffman tree. Called with the first 8 bits loaded from input stream +void THuffmannTree::BuildTree(unsigned int nCmpType) +{ + unsigned long maxByte; // [ESP+10] - The greatest character found in table + THTreeItem ** itemPtr; // [ESP+14] - Pointer to Huffman tree item pointer array + unsigned char * byteArray; // [ESP+1C] - Pointer to unsigned char in Table1502A630 + THTreeItem * child1; + unsigned long i; // egcs in linux doesn't like multiple for loops without an explicit i + + // Loop while pointer has a negative value + while(PTR_INT(pLast) > 0) // ESI - Last entry + { + THTreeItem * temp; // EAX + + if(pLast->next != NULL) // ESI->next + pLast->RemoveItem(); + // EDI = &offs3054 + pItem3058 = PTR_PTR(&pItem3054);// [EDI+4] + pLast->prev = pItem3058; // EAX + + temp = PTR_PTR(&pItem3054)->GetPrevItem(PTR_INT(&pItem3050)); + + temp->next = pLast; + pItem3054 = pLast; + } + + // Clear all pointers in HTree item array + SMemZero(items306C, sizeof(items306C)); + + maxByte = 0; // Greatest character found init to zero. + itemPtr = (THTreeItem **)&items306C; // Pointer to current entry in HTree item pointer array + + // Ensure we have low 8 bits only + nCmpType &= 0xFF; + byteArray = Table1502A630 + nCmpType * 258; // EDI also + + for(i = 0; i < 0x100; i++, itemPtr++) + { + THTreeItem * item = pItem3058; // Item to be created + THTreeItem * pItem3 = pItem3058; + unsigned char oneByte = byteArray[i]; + + // Skip all the bytes which are zero. + if(byteArray[i] == 0) + continue; + + // If not valid pointer, take the first available item in the array + if(PTR_INT(item) <= 0) + item = &items0008[nItems++]; + + // Insert this item as the top of the tree + InsertItem(&pItem305C, item, SWITCH_ITEMS, NULL); + + item->parent = NULL; // Invalidate child and parent + item->child = NULL; + *itemPtr = item; // Store pointer into pointer array + + item->dcmpByte = i; // Store counter + item->byteValue = oneByte; // Store byte value + if(oneByte >= maxByte) + { + maxByte = oneByte; + continue; + } + + // Find the first item which has byte value greater than current one byte + if(PTR_INT((pItem3 = pLast)) > 0) // EDI - Pointer to the last item + { + // 15006AF7 + if(pItem3 != NULL) + { + do // 15006AFB + { + if(pItem3->byteValue >= oneByte) + goto _15006B09; + pItem3 = pItem3->prev; + } + while(PTR_INT(pItem3) > 0); + } + } + pItem3 = NULL; + + // 15006B09 + _15006B09: + if(item->next != NULL) + item->RemoveItem(); + + // 15006B15 + if(pItem3 == NULL) + pItem3 = PTR_PTR(&pFirst); + + // 15006B1F + item->next = pItem3->next; + item->prev = pItem3->next->prev; + pItem3->next->prev = item; + pItem3->next = item; + } + + // 15006B4A + for(; i < 0x102; i++) + { + THTreeItem ** itemPtr = &items306C[i]; // EDI + + // 15006B59 + THTreeItem * item = pItem3058; // ESI + if(PTR_INT(item) <= 0) + item = &items0008[nItems++]; + + InsertItem(&pItem305C, item, INSERT_ITEM, NULL); + + // 15006B89 + item->dcmpByte = i; + item->byteValue = 1; + item->parent = NULL; + item->child = NULL; + *itemPtr++ = item; + } + + // 15006BAA + if(PTR_INT((child1 = pLast)) > 0) // EDI - last item (first child to item + { + THTreeItem * child2; // EBP + THTreeItem * item; // ESI + + // 15006BB8 + while(PTR_INT((child2 = child1->prev)) > 0) + { + if(PTR_INT((item = pItem3058)) <= 0) + item = &items0008[nItems++]; + + // 15006BE3 + InsertItem(&pItem305C, item, SWITCH_ITEMS, NULL); + + // 15006BF3 + item->parent = NULL; + item->child = NULL; + + //EDX = child2->byteValue + child1->byteValue; + //EAX = child1->byteValue; + //ECX = maxByte; // The greatest character (0xFF usually) + + item->byteValue = child1->byteValue + child2->byteValue; // 0x02 + item->child = child1; // Prev item in the + child1->parent = item; + child2->parent = item; + + // EAX = item->byteValue; + if(item->byteValue >= maxByte) + maxByte = item->byteValue; + else + { + THTreeItem * pItem2 = child2->prev; // EDI + + if(PTR_INT(pItem2) > 0) + { + // 15006C2D + do + { + if(pItem2->byteValue >= item->byteValue) + goto _15006C3B; + pItem2 = pItem2->prev; + } + while(PTR_INT(pItem2) > 0); + } + pItem2 = NULL; + + _15006C3B: + if(item->next != 0) + { + THTreeItem * temp4 = item->GetPrevItem(-1); + + temp4->next = item->next; // The first item changed + item->next->prev = item->prev; // First->prev changed to negative value + item->next = NULL; + item->prev = NULL; + } + + // 15006C62 + if(pItem2 == NULL) + pItem2 = PTR_PTR(&pFirst); + + item->next = pItem2->next; // Set item with 0x100 byte value + item->prev = pItem2->next->prev; // Set item with 0x17 byte value + pItem2->next->prev = item; // Changed prev of item with + pItem2->next = item; + } + // 15006C7B + if(PTR_INT((child1 = child2->prev)) <= 0) + break; + } + } + // 15006C88 + offs0004 = 1; +} +/* +// Modifies Huffman tree. Adds new item and changes +void THuffmannTree::ModifyTree(unsigned long dwIndex) +{ + THTreeItem * pItem1 = pItem3058; // ESI + THTreeItem * pSaveLast = (PTR_INT(pLast) <= 0) ? NULL : pLast; // EBX + THTreeItem * temp; // EAX + + // Prepare the first item to insert to the tree + if(PTR_INT(pItem1) <= 0) + pItem1 = &items0008[nItems++]; + + // If item has any next item, remove it from the chain + if(pItem1->next != NULL) + { + THTreeItem * temp = pItem1->GetPrevItem(-1); // EAX + + temp->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + pItem1->next = PTR_PTR(&pFirst); + pItem1->prev = pLast; + temp = pItem1->next->GetPrevItem(PTR_INT(pItem305C)); + + // 150068E9 + temp->next = pItem1; + pLast = pItem1; + + pItem1->parent = NULL; + pItem1->child = NULL; + + // 150068F6 + pItem1->dcmpByte = pSaveLast->dcmpByte; // Copy item index + pItem1->byteValue = pSaveLast->byteValue; // Copy item byte value + pItem1->parent = pSaveLast; // Set parent to last item + items306C[pSaveLast->dcmpByte] = pItem1; // Insert item into item pointer array + + // Prepare the second item to insert into the tree + if(PTR_INT((pItem1 = pItem3058)) <= 0) + pItem1 = &items0008[nItems++]; + + // 1500692E + if(pItem1->next != NULL) + { + temp = pItem1->GetPrevItem(-1); // EAX + + temp->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + // 1500694C + pItem1->next = PTR_PTR(&pFirst); + pItem1->prev = pLast; + temp = pItem1->next->GetPrevItem(PTR_INT(pItem305C)); + + // 15006968 + temp->next = pItem1; + pLast = pItem1; + + // 1500696E + pItem1->child = NULL; + pItem1->dcmpByte = dwIndex; + pItem1->byteValue = 0; + pItem1->parent = pSaveLast; + pSaveLast->child = pItem1; + items306C[dwIndex] = pItem1; + + do + { + THTreeItem * pItem2 = pItem1; + THTreeItem * pItem3; + unsigned long byteValue; + + // 15006993 + byteValue = ++pItem1->byteValue; + + // Pass through all previous which have its value greater than byteValue + while(PTR_INT((pItem3 = pItem2->prev)) > 0) // EBX + { + if(pItem3->byteValue >= byteValue) + goto _150069AE; + + pItem2 = pItem2->prev; + } + // 150069AC + pItem3 = NULL; + + _150069AE: + if(pItem2 == pItem1) + continue; + + // 150069B2 + // Switch pItem2 with item + InsertItem(&pItem305C, pItem2, SWITCH_ITEMS, pItem1); + InsertItem(&pItem305C, pItem1, SWITCH_ITEMS, pItem3); + + // 150069D0 + // Switch parents of pItem1 and pItem2 + temp = pItem2->parent->child; + if(pItem1 == pItem1->parent->child) + pItem1->parent->child = pItem2; + + if(pItem2 == temp) + pItem2->parent->child = pItem1; + + // 150069ED + // Switch parents of pItem1 and pItem3 + temp = pItem1->parent; + pItem1 ->parent = pItem2->parent; + pItem2->parent = temp; + offs0004++; + } + while(PTR_INT((pItem1 = pItem1->parent)) > 0); +} +*/ + +THTreeItem * THuffmannTree::Call1500E740(unsigned int nValue) +{ + THTreeItem * pItem1 = pItem3058; // EDX + THTreeItem * pItem2; // EAX + THTreeItem * pNext; + THTreeItem * pPrev; + THTreeItem ** ppItem; + + if(PTR_INT(pItem1) <= 0 || (pItem2 = pItem1) == NULL) + { + if((pItem2 = &items0008[nItems++]) != NULL) + pItem1 = pItem2; + else + pItem1 = pFirst; + } + else + pItem1 = pItem2; + + pNext = pItem1->next; + if(pNext != NULL) + { + pPrev = pItem1->prev; + if(PTR_INT(pPrev) <= 0) + pPrev = PTR_NOT(pPrev); + else + pPrev += (pItem1 - pItem1->next->prev); + + pPrev->next = pNext; + pNext->prev = pPrev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + ppItem = &pFirst; // esi + if(nValue > 1) + { + // ecx = pFirst->next; + pItem1->next = *ppItem; + pItem1->prev = (*ppItem)->prev; + + (*ppItem)->prev = pItem2; + *ppItem = pItem1; + + pItem2->parent = NULL; + pItem2->child = NULL; + } + else + { + pItem1->next = (THTreeItem *)ppItem; + pItem1->prev = ppItem[1]; + // edi = pItem305C; + pPrev = ppItem[1]; // ecx + if(pPrev <= 0) + { + pPrev = PTR_NOT(pPrev); + pPrev->next = pItem1; + pPrev->prev = pItem2; + + pItem2->parent = NULL; + pItem2->child = NULL; + } + else + { + if(PTR_INT(pItem305C) < 0) + pPrev += (THTreeItem *)ppItem - (*ppItem)->prev; + else + pPrev += PTR_INT(pItem305C); + + pPrev->next = pItem1; + ppItem[1] = pItem2; + pItem2->parent = NULL; + pItem2->child = NULL; + } + } + return pItem2; +} + +void THuffmannTree::Call1500E820(THTreeItem * pItem) +{ + THTreeItem * pItem1; // edi + THTreeItem * pItem2 = NULL; // eax + THTreeItem * pItem3; // edx + THTreeItem * pPrev; // ebx + + for(; pItem != NULL; pItem = pItem->parent) + { + pItem->byteValue++; + + for(pItem1 = pItem; ; pItem1 = pPrev) + { + pPrev = pItem1->prev; + if(PTR_INT(pPrev) <= 0) + { + pPrev = NULL; + break; + } + + if(pPrev->byteValue >= pItem->byteValue) + break; + } + + if(pItem1 == pItem) + continue; + + if(pItem1->next != NULL) + { + pItem2 = pItem1->GetPrevItem(-1); + pItem2->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + pItem2 = pItem->next; + pItem1->next = pItem2; + pItem1->prev = pItem2->prev; + pItem2->prev = pItem1; + pItem->next = pItem1; + if((pItem2 = pItem1) != NULL) + { + pItem2 = pItem->GetPrevItem(-1); + pItem2->next = pItem->next; + pItem->next->prev = pItem->prev; + pItem->next = NULL; + pItem->prev = NULL; + } + + if(pPrev == NULL) + pPrev = PTR_PTR(&pFirst); + + pItem2 = pPrev->next; + pItem->next = pItem2; + pItem->prev = pItem2->prev; + pItem2->prev = pItem; + pPrev->next = pItem; + + pItem3 = pItem1->parent->child; + pItem2 = pItem->parent; + if(pItem2->child == pItem) + pItem2->child = pItem1; + if(pItem3 == pItem1) + pItem1->parent->child = pItem; + + pItem2 = pItem->parent; + pItem->parent = pItem1->parent; + pItem1->parent = pItem2; + offs0004++; + } +} + +// 1500E920 +unsigned int THuffmannTree::DoCompression(TOutputStream * os, unsigned char * pbInBuffer, int nInLength, int nCmpType) +{ + THTreeItem * pItem1; + THTreeItem * pItem2; + THTreeItem * pItem3; + THTreeItem * pTemp; + unsigned long dwBitBuff; + unsigned int nBits; + unsigned int nBit; + + BuildTree(nCmpType); + bIsCmp0 = (nCmpType == 0); + + // Store the compression type into output buffer + os->dwBitBuff |= (nCmpType << os->nBits); + os->nBits += 8; + + // Flush completed bytes + while(os->nBits >= 8) + { + if(os->dwOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->dwOutSize--; + } + + os->dwBitBuff >>= 8; + os->nBits -= 8; + } + + for(; nInLength != 0; nInLength--) + { + unsigned char bOneByte = *pbInBuffer++; + + if((pItem1 = items306C[bOneByte]) == NULL) + { + pItem2 = items306C[0x101]; // ecx + pItem3 = pItem2->parent; // eax + dwBitBuff = 0; + nBits = 0; + + for(; pItem3 != NULL; pItem3 = pItem3->parent) + { + nBit = (pItem3->child != pItem2) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem2 = pItem3; + } + os->PutBits(dwBitBuff, nBits); + + // Store the loaded byte into output stream + os->dwBitBuff |= (bOneByte << os->nBits); + os->nBits += 8; + + // Flush the whole byte(s) + while(os->nBits >= 8) + { + if(os->dwOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->dwOutSize--; + } + os->dwBitBuff >>= 8; + os->nBits -= 8; + } + + pItem1 = (PTR_INT(pLast) <= 0) ? NULL : pLast; + pItem2 = Call1500E740(1); + pItem2->dcmpByte = pItem1->dcmpByte; + pItem2->byteValue = pItem1->byteValue; + pItem2->parent = pItem1; + items306C[pItem2->dcmpByte] = pItem2; + + pItem2 = Call1500E740(1); + pItem2->dcmpByte = bOneByte; + pItem2->byteValue = 0; + pItem2->parent = pItem1; + items306C[pItem2->dcmpByte] = pItem2; + pItem1->child = pItem2; + + Call1500E820(pItem2); + + if(bIsCmp0 != 0) + { + Call1500E820(items306C[bOneByte]); + continue; + } + + for(pItem1 = items306C[bOneByte]; pItem1 != NULL; pItem1 = pItem1->parent) + { + pItem1->byteValue++; + pItem2 = pItem1; + + for(;;) + { + pItem3 = pItem2->prev; + if(PTR_INT(pItem3) <= 0) + { + pItem3 = NULL; + break; + } + if(pItem3->byteValue >= pItem1->byteValue) + break; + pItem2 = pItem3; + } + + if(pItem2 != pItem1) + { + InsertItem(&pItem305C, pItem2, SWITCH_ITEMS, pItem1); + InsertItem(&pItem305C, pItem1, SWITCH_ITEMS, pItem3); + + pItem3 = pItem2->parent->child; + if(pItem1->parent->child == pItem1) + pItem1->parent->child = pItem2; + + if(pItem3 == pItem2) + pItem2->parent->child = pItem1; + + pTemp = pItem1->parent; + pItem1->parent = pItem2->parent; + pItem2->parent = pTemp; + offs0004++; + } + } + } +// 1500EB62 + else + { + dwBitBuff = 0; + nBits = 0; + for(pItem2 = pItem1->parent; pItem2 != NULL; pItem2 = pItem2->parent) + { + nBit = (pItem2->child != pItem1) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem1 = pItem2; + } + os->PutBits(dwBitBuff, nBits); + } + +// 1500EB98 + if(bIsCmp0 != 0) + Call1500E820(items306C[bOneByte]); // 1500EB9D +// 1500EBAF + } // for(; nInLength != 0; nInLength--) + +// 1500EBB8 + pItem1 = items306C[0x100]; + dwBitBuff = 0; + nBits = 0; + for(pItem2 = pItem1->parent; pItem2 != NULL; pItem2 = pItem2->parent) + { + nBit = (pItem2->child != pItem1) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem1 = pItem2; + } + +// 1500EBE6 + os->PutBits(dwBitBuff, nBits); + +// 1500EBEF + // Flush the remaining bits + while(os->nBits != 0) + { + if(os->dwOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->dwOutSize--; + } + os->dwBitBuff >>= 8; + os->nBits -= ((os->nBits > 8) ? 8 : os->nBits); + } + + return (os->pbOutPos - os->pbOutBuffer); +} + +// Decompression using Huffman tree (1500E450) +unsigned int THuffmannTree::DoDecompression(unsigned char * pbOutBuffer, unsigned int dwOutLength, TInputStream * is) +{ + TQDecompress * qd; + THTreeItem * pItem1; + THTreeItem * pItem2; + unsigned char * pbOutPos = pbOutBuffer; + unsigned long nBitCount; + unsigned int nDcmpByte = 0; + unsigned int n8Bits; // 8 bits loaded from input stream + unsigned int n7Bits; // 7 bits loaded from input stream + bool bHasQdEntry; + + // Test the output length. Must not be NULL. + if(dwOutLength == 0) + return 0; + + // Get the compression type from the input stream + n8Bits = is->Get8Bits(); + + // Build the Huffman tree + BuildTree(n8Bits); + bIsCmp0 = (n8Bits == 0) ? 1 : 0; + + for(;;) + { + n7Bits = is->Get7Bits(); // Get 7 bits from input stream + + // Try to use quick decompression. Check TQDecompress array for corresponding item. + // If found, ise the result byte instead. + qd = &qd3474[n7Bits]; + + // If there is a quick-pass possible (ebx) + bHasQdEntry = (qd->offs00 >= offs0004) ? true : false; + + // If we can use quick decompress, use it. + if(bHasQdEntry) + { + if(qd->nBits > 7) + { + is->dwBitBuff >>= 7; + is->nBits -= 7; + pItem1 = qd->pItem; + goto _1500E549; + } + is->dwBitBuff >>= qd->nBits; + is->nBits -= qd->nBits; + nDcmpByte = qd->dcmpByte; + } + else + { + pItem1 = pFirst->next->prev; + if(PTR_INT(pItem1) <= 0) + pItem1 = NULL; +_1500E549: + nBitCount = 0; + pItem2 = NULL; + + do + { + pItem1 = pItem1->child; // Move down by one level + if(is->GetBit()) // If current bit is set, move to previous + pItem1 = pItem1->prev; + + if(++nBitCount == 7) // If we are at 7th bit, save current HTree item. + pItem2 = pItem1; + } + while(pItem1->child != NULL); // Walk until tree has no deeper level + + if(bHasQdEntry == false) + { + if(nBitCount > 7) + { + qd->offs00 = offs0004; + qd->nBits = nBitCount; + qd->pItem = pItem2; + } + else + { + unsigned long nIndex = n7Bits & (0xFFFFFFFF >> (32 - nBitCount)); + unsigned long nAdd = (1 << nBitCount); + + for(qd = &qd3474[nIndex]; nIndex <= 0x7F; nIndex += nAdd, qd += nAdd) + { + qd->offs00 = offs0004; + qd->nBits = nBitCount; + qd->dcmpByte = pItem1->dcmpByte; + } + } + } + nDcmpByte = pItem1->dcmpByte; + } + + if(nDcmpByte == 0x101) // Huffman tree needs to be modified + { + n8Bits = is->Get8Bits(); + pItem1 = (pLast <= 0) ? NULL : pLast; + + pItem2 = Call1500E740(1); + pItem2->parent = pItem1; + pItem2->dcmpByte = pItem1->dcmpByte; + pItem2->byteValue = pItem1->byteValue; + items306C[pItem2->dcmpByte] = pItem2; + + pItem2 = Call1500E740(1); + pItem2->parent = pItem1; + pItem2->dcmpByte = n8Bits; + pItem2->byteValue = 0; + items306C[pItem2->dcmpByte] = pItem2; + + pItem1->child = pItem2; + Call1500E820(pItem2); + if(bIsCmp0 == 0) + Call1500E820(items306C[n8Bits]); + + nDcmpByte = n8Bits; + } + + if(nDcmpByte == 0x100) + break; + + *pbOutPos++ = (unsigned char)nDcmpByte; + if(--dwOutLength == 0) + break; + + if(bIsCmp0) + Call1500E820(items306C[nDcmpByte]); + } + + return (pbOutPos - pbOutBuffer); +} + +/* OLD VERSION +unsigned int THuffmannTree::DoDecompression(unsigned char * pbOutBuffer, unsigned int dwOutLength, TInputStream * is) +{ + THTreeItem * pItem1; // Current item if walking HTree + unsigned long bitCount; // Bit counter if walking HTree + unsigned long oneByte; // 8 bits from bit stream/Pointer to target + unsigned char * outPtr; // Current pointer to output buffer + bool hasQDEntry; // true if entry for quick decompression if filled + THTreeItem * itemAt7 = NULL; // HTree item found at 7th bit + THTreeItem * temp; // For every use + unsigned long dcmpByte = 0; // Decompressed byte value + bool bFlag = 0; + + // Test the output length. Must not be NULL. + if(dwOutLength == 0) + return 0; + + // If too few bits in input bit buffer, we have to load next 16 bits + is->EnsureHasMoreThan8Bits(); + + // Get 8 bits from input stream + oneByte = is->Get8Bits(); + + // Build the Huffman tree + BuildTree(oneByte); + + bIsCmp0 = (oneByte == 0) ? 1 : 0; + outPtr = pbOutBuffer; // Copy pointer to output data + + for(;;) + { + TQDecompress * qd; // For quick decompress + unsigned long sevenBits = is->Get7Bits();// 7 bits from input stream + + // Try to use quick decompression. Check TQDecompress array for corresponding item. + // If found, ise the result byte instead. + qd = &qd3474[sevenBits]; + + // If there is a quick-pass possible + hasQDEntry = (qd->offs00 == offs0004) ? 1 : 0; + + // Start passing the Huffman tree. Set item to tree root item + pItem1 = pFirst; + + // If we can use quick decompress, use it. + bFlag = 1; + if(hasQDEntry == 1) + { + // Check the bit count is greater than 7, move item to 7 levels deeper + if((bitCount = qd->bitCount) > 7) + { + is->dwBitBuff >>= 7; + is->nBits -= 7; + pItem1 = qd->item; // Don't start with root item, but with some deeper-laying + } + else + { + // If OK, use their byte value + is->dwBitBuff >>= bitCount; + is->nBits -= bitCount; + dcmpByte = qd->dcmpByte; + bFlag = 0; + } + } + else + { + pItem1 = pFirst->next->prev; + if(PTR_INT(pItem1) <= 0) + pItem1 = NULL; + } + + if(bFlag == 1) + { + // Walk through Huffman Tree + bitCount = 0; // Clear bit counter + do + { + pItem1 = pItem1->child; + if(is->GetBit() != 0) // If current bit is set, move to previous + pItem1 = pItem1->prev; // item in current level + + if(++bitCount == 7) // If we are at 7th bit, store current HTree item. + itemAt7 = pItem1; // Store Huffman tree item + } + while(pItem1->child != NULL); // Walk until tree has no deeper level + + // If quick decompress entry is not filled yet, fill it. + if(hasQDEntry == 0) + { + if(bitCount > 7) // If we passed more than 7 bits, store bitCount and item + { + qd->offs00 = offs0004; // Value indicates that entry is resolved + qd->bitCount = bitCount; // Number of bits passed + qd->item = itemAt7; // Store item at 7th bit + } + // If we passed less than 7 bits, fill entry and bit count multipliers + else + { + unsigned long index = sevenBits & (0xFFFFFFFF >> (32 - bitCount)); // Index for quick-decompress entry + unsigned long addIndex = (1 << bitCount); // Add value for index + + qd = &qd3474[index]; + + do + { + qd->offs00 = offs0004; + qd->bitCount = bitCount; + qd->dcmpByte = pItem1->dcmpByte; + + index += addIndex; + qd += addIndex; + } + while(index <= 0x7F); + } + } + dcmpByte = pItem1->dcmpByte; + } + + if(dcmpByte == 0x101) // Huffman tree needs to be modified + { + // Check if there is enough bits in the buffer + is->EnsureHasMoreThan8Bits(); + + // Get 8 bits from the buffer + oneByte = is->Get8Bits(); + + // Modify Huffman tree + ModifyTree(oneByte); + + // Get lastly added tree item + pItem1 = items306C[oneByte]; + + if(bIsCmp0 == 0 && pItem1 != NULL) + { + // 15006F15 + do + { + THTreeItem * pItem2 = pItem1; + THTreeItem * pItem3; + unsigned long byteValue; + + byteValue = ++pItem1->byteValue; + + while(PTR_INT((pItem3 = pItem2->prev)) > 0) + { + if(pItem3->byteValue >= byteValue) + goto _15006F30; + + pItem2 = pItem2->prev; + } + pItem3 = NULL; + + _15006F30: + if(pItem2 == pItem1) + continue; + + InsertItem(&pItem305C, pItem2, SWITCH_ITEMS, pItem1); + InsertItem(&pItem305C, pItem1, SWITCH_ITEMS, pItem3); + + temp = pItem2->parent->child; + if(pItem1 == pItem1->parent->child) + pItem1->parent->child = pItem2; + + if(pItem2 == temp) + pItem2->parent->child = pItem1; + + // Switch parents of pItem1 and pItem3 + temp = pItem1->parent; + pItem1->parent = pItem2->parent; + pItem2->parent = temp; + offs0004++; + } + while(PTR_INT((pItem1 = pItem1->parent)) > 0); + } + dcmpByte = oneByte; + } + + if(dcmpByte != 0x100) // Not at the end of data ? + { + *outPtr++ = (unsigned char)dcmpByte; + if(--dwOutLength > 0) + { + if(bIsCmp0 != 0) + Call1500E820(items306C[pItem1->byteValue]); + } + else + break; + } + else + break; + } + return (unsigned long)(outPtr - pbOutBuffer); +} +*/ + +// Table for (de)compression. Every compression type has 258 entries +unsigned char THuffmannTree::Table1502A630[] = +{ + // Data for compression type 0x00 + 0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, + 0x00, 0x00, + + // Data for compression type 0x01 + 0x54, 0x16, 0x16, 0x0D, 0x0C, 0x08, 0x06, 0x05, 0x06, 0x05, 0x06, 0x03, 0x04, 0x04, 0x03, 0x05, + 0x0E, 0x0B, 0x14, 0x13, 0x13, 0x09, 0x0B, 0x06, 0x05, 0x04, 0x03, 0x02, 0x03, 0x02, 0x02, 0x02, + 0x0D, 0x07, 0x09, 0x06, 0x06, 0x04, 0x03, 0x02, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x02, 0x02, + 0x09, 0x06, 0x04, 0x04, 0x04, 0x04, 0x03, 0x02, 0x03, 0x02, 0x02, 0x02, 0x02, 0x03, 0x02, 0x04, + 0x08, 0x03, 0x04, 0x07, 0x09, 0x05, 0x03, 0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x03, 0x02, 0x02, + 0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x02, + 0x06, 0x0A, 0x08, 0x08, 0x06, 0x07, 0x04, 0x03, 0x04, 0x04, 0x02, 0x02, 0x04, 0x02, 0x03, 0x03, + 0x04, 0x03, 0x07, 0x07, 0x09, 0x06, 0x04, 0x03, 0x03, 0x02, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, + 0x0A, 0x02, 0x02, 0x03, 0x02, 0x02, 0x01, 0x01, 0x02, 0x02, 0x02, 0x06, 0x03, 0x05, 0x02, 0x03, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x03, 0x01, 0x01, 0x01, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x04, 0x04, 0x04, 0x07, 0x09, 0x08, 0x0C, 0x02, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x03, + 0x04, 0x01, 0x02, 0x04, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, + 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x02, 0x02, 0x02, 0x06, 0x4B, + 0x00, 0x00, + + // Data for compression type 0x02 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x27, 0x00, 0x00, 0x23, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0xFF, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x06, 0x0E, 0x10, 0x04, + 0x06, 0x08, 0x05, 0x04, 0x04, 0x03, 0x03, 0x02, 0x02, 0x03, 0x03, 0x01, 0x01, 0x02, 0x01, 0x01, + 0x01, 0x04, 0x02, 0x04, 0x02, 0x02, 0x02, 0x01, 0x01, 0x04, 0x01, 0x01, 0x02, 0x03, 0x03, 0x02, + 0x03, 0x01, 0x03, 0x06, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x01, 0x01, + 0x01, 0x29, 0x07, 0x16, 0x12, 0x40, 0x0A, 0x0A, 0x11, 0x25, 0x01, 0x03, 0x17, 0x10, 0x26, 0x2A, + 0x10, 0x01, 0x23, 0x23, 0x2F, 0x10, 0x06, 0x07, 0x02, 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + + // Data for compression type 0x03 + 0xFF, 0x0B, 0x07, 0x05, 0x0B, 0x02, 0x02, 0x02, 0x06, 0x02, 0x02, 0x01, 0x04, 0x02, 0x01, 0x03, + 0x09, 0x01, 0x01, 0x01, 0x03, 0x04, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, + 0x05, 0x01, 0x01, 0x01, 0x0D, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x02, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, + 0x0A, 0x04, 0x02, 0x01, 0x06, 0x03, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01, + 0x05, 0x02, 0x03, 0x04, 0x03, 0x03, 0x03, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x03, 0x03, + 0x01, 0x03, 0x01, 0x01, 0x02, 0x05, 0x01, 0x01, 0x04, 0x03, 0x05, 0x01, 0x03, 0x01, 0x03, 0x03, + 0x02, 0x01, 0x04, 0x03, 0x0A, 0x06, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x02, 0x02, 0x01, 0x0A, 0x02, 0x05, 0x01, 0x01, 0x02, 0x07, 0x02, 0x17, 0x01, 0x05, 0x01, 0x01, + 0x0E, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x06, 0x02, 0x01, 0x04, 0x05, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x07, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x11, + 0x00, 0x00, + + // Data for compression type 0x04 + 0xFF, 0xFB, 0x98, 0x9A, 0x84, 0x85, 0x63, 0x64, 0x3E, 0x3E, 0x22, 0x22, 0x13, 0x13, 0x18, 0x17, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + + // Data for compression type 0x05 + 0xFF, 0xF1, 0x9D, 0x9E, 0x9A, 0x9B, 0x9A, 0x97, 0x93, 0x93, 0x8C, 0x8E, 0x86, 0x88, 0x80, 0x82, + 0x7C, 0x7C, 0x72, 0x73, 0x69, 0x6B, 0x5F, 0x60, 0x55, 0x56, 0x4A, 0x4B, 0x40, 0x41, 0x37, 0x37, + 0x2F, 0x2F, 0x27, 0x27, 0x21, 0x21, 0x1B, 0x1C, 0x17, 0x17, 0x13, 0x13, 0x10, 0x10, 0x0D, 0x0D, + 0x0B, 0x0B, 0x09, 0x09, 0x08, 0x08, 0x07, 0x07, 0x06, 0x05, 0x05, 0x04, 0x04, 0x04, 0x19, 0x18, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + + // Data for compression type 0x06 + 0xC3, 0xCB, 0xF5, 0x41, 0xFF, 0x7B, 0xF7, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0xBF, 0xCC, 0xF2, 0x40, 0xFD, 0x7C, 0xF7, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x7A, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + + // Data for compression type 0x07 + 0xC3, 0xD9, 0xEF, 0x3D, 0xF9, 0x7C, 0xE9, 0x1E, 0xFD, 0xAB, 0xF1, 0x2C, 0xFC, 0x5B, 0xFE, 0x17, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0xBD, 0xD9, 0xEC, 0x3D, 0xF5, 0x7D, 0xE8, 0x1D, 0xFB, 0xAE, 0xF0, 0x2C, 0xFB, 0x5C, 0xFF, 0x18, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x70, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + + // Data for compression type 0x08 + 0xBA, 0xC5, 0xDA, 0x33, 0xE3, 0x6D, 0xD8, 0x18, 0xE5, 0x94, 0xDA, 0x23, 0xDF, 0x4A, 0xD1, 0x10, + 0xEE, 0xAF, 0xE4, 0x2C, 0xEA, 0x5A, 0xDE, 0x15, 0xF4, 0x87, 0xE9, 0x21, 0xF6, 0x43, 0xFC, 0x12, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0xB0, 0xC7, 0xD8, 0x33, 0xE3, 0x6B, 0xD6, 0x18, 0xE7, 0x95, 0xD8, 0x23, 0xDB, 0x49, 0xD0, 0x11, + 0xE9, 0xB2, 0xE2, 0x2B, 0xE8, 0x5C, 0xDD, 0x15, 0xF1, 0x87, 0xE7, 0x20, 0xF7, 0x44, 0xFF, 0x13, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x5F, 0x9E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00 +}; diff --git a/huffman.h b/huffman.h new file mode 100644 index 0000000..f13104c --- /dev/null +++ b/huffman.h @@ -0,0 +1,133 @@ +/*****************************************************************************/ +/* huffman.h Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Description : */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* xx.xx.xx 1.00 Lad The first version of huffman.h */ +/* 03.05.03 2.00 Lad Added compression */ +/*****************************************************************************/ + +#ifndef __HUFFMAN_H__ +#define __HUFFMAN_H__ + +//----------------------------------------------------------------------------- +// Defines + +#define INSERT_ITEM 1 +#define SWITCH_ITEMS 2 // Switch the item1 and item2 + +#define PTR_NOT(ptr) (THTreeItem *)(~(unsigned long)(ptr)) +#define PTR_PTR(ptr) ((THTreeItem *)(ptr)) +#define PTR_INT(ptr) (long)(ptr) + +#ifndef NULL +#define NULL 0 +#endif + +//----------------------------------------------------------------------------- +// Structures and classes + +// Input stream for Huffmann decompression +class TInputStream +{ + public: + + unsigned long GetBit(); + unsigned long Get7Bits(); + unsigned long Get8Bits(); + + unsigned char * pbInBuffer; // 00 - Input data + unsigned long dwBitBuff; // 04 - Input bit buffer + unsigned int nBits; // 08 - Number of bits remaining in 'dwValue' +}; + +// Output stream for Huffmann compression +class TOutputStream +{ + public: + + void PutBits(unsigned long dwBuff, unsigned int nPutBits); + + unsigned char * pbOutBuffer; // 00 : Output buffer + unsigned long dwOutSize; // 04 : Size of output buffer + unsigned char * pbOutPos; // 08 : Current output position + unsigned long dwBitBuff; // 0C : Bit buffer + unsigned long nBits; // 10 : Number of bits in the bit buffer +}; + +// Huffmann tree item (?) +struct THTreeItem +{ + public: + + THTreeItem * Call1501DB70(THTreeItem * pLast); + THTreeItem * GetPrevItem(long value); + void ClearItemLinks(); + void RemoveItem(); + + THTreeItem * next; // 00 - Pointer to next THTreeItem + THTreeItem * prev; // 04 - Pointer to prev THTreeItem (< 0 if none) + unsigned long dcmpByte; // 08 - Index of this item in item pointer array, decompressed byte value + unsigned long byteValue; // 0C - Some byte value + THTreeItem * parent; // 10 - Pointer to parent THTreeItem (NULL if none) + THTreeItem * child; // 14 - Pointer to child THTreeItem +}; + +// Structure used for quick decompress. The 'bitCount' contains number of bits +// and byte value contains result decompressed byte value. +// After each walk through Huffman tree are filled all entries which are +// multiplies of number of bits loaded from input stream. These entries +// contain number of bits and result value. At the next 7 bits is tested this +// structure first. If corresponding entry found, decompression routine will +// not walk through Huffman tree and directly stores output byte to output stream. +struct TQDecompress +{ + unsigned long offs00; // 00 - 1 if resolved + unsigned long nBits; // 04 - Bit count + union + { + unsigned long dcmpByte; // 08 - Byte value for decompress (if bitCount <= 7) + THTreeItem * pItem; // 08 - THTreeItem (if number of bits is greater than 7 + }; +}; + +// Structure for Huffman tree (Size 0x3674 bytes). Because I'm not expert +// for the decompression, I do not know actually if the class is really a Hufmann +// tree. If someone knows the decompression details, please let me know +class THuffmannTree +{ + public: + + void BuildTree(unsigned int nCmpType); +// void ModifyTree(unsigned long dwIndex); +// void Call15007010(Bit32 dwInLength, THTreeItem * item); + THTreeItem * Call1500E740(unsigned int nValue); + void Call1500E820(THTreeItem * pItem); + unsigned int DoCompression(TOutputStream * os, unsigned char * pbInBuffer, int nInLength, int nCmpType); + unsigned int DoDecompression(unsigned char * pbOutBuffer, unsigned int dwOutLength, TInputStream * is); + + unsigned long bIsCmp0; // 0000 - 1 if compression type 0 + unsigned long offs0004; // 0004 - Some flag + THTreeItem items0008[0x203]; // 0008 - HTree items + + //- Sometimes used as HTree item ----------- + THTreeItem * pItem3050; // 3050 - Always NULL (?) + THTreeItem * pItem3054; // 3054 - Pointer to Huffman tree item + THTreeItem * pItem3058; // 3058 - Pointer to Huffman tree item (< 0 if invalid) + + //- Sometimes used as HTree item ----------- + THTreeItem * pItem305C; // 305C - Usually NULL + THTreeItem * pFirst; // 3060 - Pointer to top (first) Huffman tree item + THTreeItem * pLast; // 3064 - Pointer to bottom (last) Huffman tree item (< 0 if invalid) + unsigned long nItems; // 3068 - Number of used HTree items + + //------------------------------------------- + THTreeItem * items306C[0x102]; // 306C - THTreeItem pointer array + TQDecompress qd3474[0x80]; // 3474 - Array for quick decompression + + static unsigned char Table1502A630[];// Some table +}; + +#endif // __HUFFMAN_H__ diff --git a/implode.c b/implode.c new file mode 100644 index 0000000..bfdea1e --- /dev/null +++ b/implode.c @@ -0,0 +1,660 @@ +/*****************************************************************************/ +/* implode.c Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Implode function of PKWARE Data Compression library */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 11.04.03 1.00 Ladislav Zezula First version of implode.c */ +/* 02.05.03 1.00 Ladislav Zezula Stress test done */ +/* 12.06.03 1.00 ShadowFlare Fixed error in WriteCmpData that caused */ +/* different output to be produced */ +/*****************************************************************************/ + +#include "pklib.h" +#include "SMem.h" + +//----------------------------------------------------------------------------- +// Defines + +#define DICT_OFFSET 0x204 +#define UNCMP_OFFSET (pWork->dsize_bytes + DICT_OFFSET) + +//----------------------------------------------------------------------------- +// Local structures + +// Compression structure (Size 36312 bytes) +typedef struct +{ + unsigned int offs0000; // 0000 : + unsigned int out_bytes; // 0004 : # bytes available in out_buff + unsigned int out_bits; // 0008 : # of bits available in the last out byte + unsigned int dsize_bits; // 000C : Dict size : 4=0x400, 5=0x800, 6=0x1000 + unsigned int dsize_mask; // 0010 : Dict size : 0x0F=0x400, 0x1F=0x800, 0x3F=0x1000 + unsigned int ctype; // 0014 : Compression type (Ascii or binary) + unsigned int dsize_bytes; // 0018 : Dictionary size in bytes + unsigned char dist_bits[0x40]; // 001C : Distance bits + unsigned char dist_codes[0x40]; // 005C : Distance codes + unsigned char nChBits[0x306]; // 009C : + unsigned short nChCodes[0x306]; // 03A2 : + unsigned short offs09AE; // 09AE : + + void * param; // 09B0 : User parameter + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param); // 9B4 + void (*write_buf)(char *buf, unsigned int *size, void *param); // 9B8 + + unsigned short offs09BC[0x204]; // 09BC : + unsigned long offs0DC4; // 0DC4 : + unsigned short offs0DC8[0x900]; // 0DC8 : + unsigned short offs1FC8; // 1FC8 : + char out_buff[0x802]; // 1FCA : Output (compressed) data + unsigned char work_buff[0x2204]; // 27CC : Work buffer + // + DICT_OFFSET => Dictionary + // + UNCMP_OFFSET => Uncompressed data + unsigned short offs49D0[0x2000]; // 49D0 : +} TCmpStruct; + +//----------------------------------------------------------------------------- +// Tables + +static unsigned char DistBits[] = +{ + 0x02, 0x04, 0x04, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, + 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, + 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 +}; + +static unsigned char DistCode[] = +{ + 0x03, 0x0D, 0x05, 0x19, 0x09, 0x11, 0x01, 0x3E, 0x1E, 0x2E, 0x0E, 0x36, 0x16, 0x26, 0x06, 0x3A, + 0x1A, 0x2A, 0x0A, 0x32, 0x12, 0x22, 0x42, 0x02, 0x7C, 0x3C, 0x5C, 0x1C, 0x6C, 0x2C, 0x4C, 0x0C, + 0x74, 0x34, 0x54, 0x14, 0x64, 0x24, 0x44, 0x04, 0x78, 0x38, 0x58, 0x18, 0x68, 0x28, 0x48, 0x08, + 0xF0, 0x70, 0xB0, 0x30, 0xD0, 0x50, 0x90, 0x10, 0xE0, 0x60, 0xA0, 0x20, 0xC0, 0x40, 0x80, 0x00 +}; + +static unsigned char ExLenBits[] = +{ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 +}; + +static unsigned char LenBits[] = +{ + 0x03, 0x02, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x07, 0x07 +}; + +static unsigned char LenCode[] = +{ + 0x05, 0x03, 0x01, 0x06, 0x0A, 0x02, 0x0C, 0x14, 0x04, 0x18, 0x08, 0x30, 0x10, 0x20, 0x40, 0x00 +}; + +static unsigned char ChBitsAsc[] = +{ + 0x0B, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x08, 0x07, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0D, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x04, 0x0A, 0x08, 0x0C, 0x0A, 0x0C, 0x0A, 0x08, 0x07, 0x07, 0x08, 0x09, 0x07, 0x06, 0x07, 0x08, + 0x07, 0x06, 0x07, 0x07, 0x07, 0x07, 0x08, 0x07, 0x07, 0x08, 0x08, 0x0C, 0x0B, 0x07, 0x09, 0x0B, + 0x0C, 0x06, 0x07, 0x06, 0x06, 0x05, 0x07, 0x08, 0x08, 0x06, 0x0B, 0x09, 0x06, 0x07, 0x06, 0x06, + 0x07, 0x0B, 0x06, 0x06, 0x06, 0x07, 0x09, 0x08, 0x09, 0x09, 0x0B, 0x08, 0x0B, 0x09, 0x0C, 0x08, + 0x0C, 0x05, 0x06, 0x06, 0x06, 0x05, 0x06, 0x06, 0x06, 0x05, 0x0B, 0x07, 0x05, 0x06, 0x05, 0x05, + 0x06, 0x0A, 0x05, 0x05, 0x05, 0x05, 0x08, 0x07, 0x08, 0x08, 0x0A, 0x0B, 0x0B, 0x0C, 0x0C, 0x0C, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, + 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, 0x0D, 0x0D, 0x0D, 0x0C, 0x0D, + 0x0D, 0x0D, 0x0C, 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D +}; + +static unsigned short ChCodeAsc[] = +{ + 0x0490, 0x0FE0, 0x07E0, 0x0BE0, 0x03E0, 0x0DE0, 0x05E0, 0x09E0, + 0x01E0, 0x00B8, 0x0062, 0x0EE0, 0x06E0, 0x0022, 0x0AE0, 0x02E0, + 0x0CE0, 0x04E0, 0x08E0, 0x00E0, 0x0F60, 0x0760, 0x0B60, 0x0360, + 0x0D60, 0x0560, 0x1240, 0x0960, 0x0160, 0x0E60, 0x0660, 0x0A60, + 0x000F, 0x0250, 0x0038, 0x0260, 0x0050, 0x0C60, 0x0390, 0x00D8, + 0x0042, 0x0002, 0x0058, 0x01B0, 0x007C, 0x0029, 0x003C, 0x0098, + 0x005C, 0x0009, 0x001C, 0x006C, 0x002C, 0x004C, 0x0018, 0x000C, + 0x0074, 0x00E8, 0x0068, 0x0460, 0x0090, 0x0034, 0x00B0, 0x0710, + 0x0860, 0x0031, 0x0054, 0x0011, 0x0021, 0x0017, 0x0014, 0x00A8, + 0x0028, 0x0001, 0x0310, 0x0130, 0x003E, 0x0064, 0x001E, 0x002E, + 0x0024, 0x0510, 0x000E, 0x0036, 0x0016, 0x0044, 0x0030, 0x00C8, + 0x01D0, 0x00D0, 0x0110, 0x0048, 0x0610, 0x0150, 0x0060, 0x0088, + 0x0FA0, 0x0007, 0x0026, 0x0006, 0x003A, 0x001B, 0x001A, 0x002A, + 0x000A, 0x000B, 0x0210, 0x0004, 0x0013, 0x0032, 0x0003, 0x001D, + 0x0012, 0x0190, 0x000D, 0x0015, 0x0005, 0x0019, 0x0008, 0x0078, + 0x00F0, 0x0070, 0x0290, 0x0410, 0x0010, 0x07A0, 0x0BA0, 0x03A0, + 0x0240, 0x1C40, 0x0C40, 0x1440, 0x0440, 0x1840, 0x0840, 0x1040, + 0x0040, 0x1F80, 0x0F80, 0x1780, 0x0780, 0x1B80, 0x0B80, 0x1380, + 0x0380, 0x1D80, 0x0D80, 0x1580, 0x0580, 0x1980, 0x0980, 0x1180, + 0x0180, 0x1E80, 0x0E80, 0x1680, 0x0680, 0x1A80, 0x0A80, 0x1280, + 0x0280, 0x1C80, 0x0C80, 0x1480, 0x0480, 0x1880, 0x0880, 0x1080, + 0x0080, 0x1F00, 0x0F00, 0x1700, 0x0700, 0x1B00, 0x0B00, 0x1300, + 0x0DA0, 0x05A0, 0x09A0, 0x01A0, 0x0EA0, 0x06A0, 0x0AA0, 0x02A0, + 0x0CA0, 0x04A0, 0x08A0, 0x00A0, 0x0F20, 0x0720, 0x0B20, 0x0320, + 0x0D20, 0x0520, 0x0920, 0x0120, 0x0E20, 0x0620, 0x0A20, 0x0220, + 0x0C20, 0x0420, 0x0820, 0x0020, 0x0FC0, 0x07C0, 0x0BC0, 0x03C0, + 0x0DC0, 0x05C0, 0x09C0, 0x01C0, 0x0EC0, 0x06C0, 0x0AC0, 0x02C0, + 0x0CC0, 0x04C0, 0x08C0, 0x00C0, 0x0F40, 0x0740, 0x0B40, 0x0340, + 0x0300, 0x0D40, 0x1D00, 0x0D00, 0x1500, 0x0540, 0x0500, 0x1900, + 0x0900, 0x0940, 0x1100, 0x0100, 0x1E00, 0x0E00, 0x0140, 0x1600, + 0x0600, 0x1A00, 0x0E40, 0x0640, 0x0A40, 0x0A00, 0x1200, 0x0200, + 0x1C00, 0x0C00, 0x1400, 0x0400, 0x1800, 0x0800, 0x1000, 0x0000 +}; + +//----------------------------------------------------------------------------- +// Local variables + +static char Copyright[] = "PKWARE Data Compression Library for Win32\r\n" + "Copyright 1989-1995 PKWARE Inc. All Rights Reserved\r\n" + "Patent No. 5,051,745\r\n" + "PKWARE Data Compression Library Reg. U.S. Pat. and Tm. Off.\r\n" + "Version 1.11"; + +//----------------------------------------------------------------------------- +// Local functions + +static void SortBuffer(TCmpStruct * pWork, unsigned char * uncmp_data, unsigned char * work_end) +{ + unsigned short * pin0DC8; + unsigned char * puncmp; + unsigned long offs1, offs2; + unsigned long ndwords; + unsigned int add; + + // Fill 0x480 dwords (0x1200 bytes) + ndwords = (pWork->out_buff - (char *)pWork->offs0DC8 + 1) >> 2; + if(ndwords <= 1) + ndwords = 1; + SMemZero(pWork->offs0DC8, ndwords << 2); + + for(puncmp = uncmp_data; work_end > puncmp; puncmp++) + pWork->offs0DC8[(puncmp[0] * 4) + (puncmp[1] * 5)]++; + + add = 0; + for(pin0DC8 = pWork->offs0DC8; pin0DC8 < &pWork->offs1FC8; pin0DC8++) + { + add += *pin0DC8; + *pin0DC8 = (unsigned short)add; + } + + for(work_end--; work_end >= uncmp_data; work_end--) + { + offs1 = (work_end[0] * 4) + (work_end[1] * 5); // EAX + offs2 = (work_end - pWork->work_buff); // EDI + + pWork->offs0DC8[offs1]--; + pWork->offs49D0[pWork->offs0DC8[offs1]] = (unsigned short)offs2; + } +} + +static void FlushBuf(TCmpStruct * pWork) +{ + unsigned char save_ch1; + unsigned char save_ch2; + unsigned int size = 0x800; + + pWork->write_buf(pWork->out_buff, &size, pWork->param); + + save_ch1 = pWork->out_buff[0x800]; + save_ch2 = pWork->out_buff[pWork->out_bytes]; + pWork->out_bytes -= 0x800; + + SMemZero(pWork->out_buff, 0x802); + + if(pWork->out_bytes != 0) + pWork->out_buff[0] = save_ch1; + if(pWork->out_bits != 0) + pWork->out_buff[pWork->out_bytes] = save_ch2; +} + +static void OutputBits(TCmpStruct * pWork, unsigned int nbits, unsigned long bit_buff) +{ + unsigned int out_bits; + + // If more than 8 bits to output, do recursion + if(nbits > 8) + { + OutputBits(pWork, 8, bit_buff); + bit_buff >>= 8; + nbits -= 8; + } + + // Add bits to the last out byte in out_buff; + out_bits = pWork->out_bits; + pWork->out_buff[pWork->out_bytes] |= (unsigned char)(bit_buff << out_bits); + pWork->out_bits += nbits; + + // If 8 or more bits, increment number of bytes + if(pWork->out_bits > 8) + { + pWork->out_bytes++; + bit_buff >>= (8 - out_bits); + + pWork->out_buff[pWork->out_bytes] = (unsigned char)bit_buff; + pWork->out_bits &= 7; + } + else + { + pWork->out_bits &= 7; + if(pWork->out_bits == 0) + pWork->out_bytes++; + } + + // If there is enough compressed bytes, flush them + if(pWork->out_bytes >= 0x800) + FlushBuf(pWork); +} + +static unsigned long FindRep(TCmpStruct * pWork, unsigned char * srcbuff) +{ + unsigned short esp12; + unsigned char * esp14; + unsigned short esp18; + unsigned char * srcbuff2; + unsigned char esp20; + + unsigned char * srcbuff3; + unsigned short * pin0DC8; + unsigned char * pin27CC; + unsigned short * pin49D0; + unsigned long nreps = 1; // EAX + unsigned long ebx, esi; + unsigned short di; + + pin0DC8 = pWork->offs0DC8 + (srcbuff[0] * 4) + (srcbuff[1] * 5); + esi = (srcbuff - pWork->dsize_bytes) - pWork->work_buff + 1; + esp18 = *pin0DC8; + pin49D0 = pWork->offs49D0 + esp18; + + if(*pin49D0 < esi) + { + while(*pin49D0 < esi) + { + pin49D0++; + esp18++; + } + *pin0DC8 = esp18; + } +//--------------------------------------------------------------------------- + srcbuff2 = srcbuff - 1; + pin49D0 = pWork->offs49D0 + esp18; + pin27CC = pWork->work_buff + *pin49D0; + if(srcbuff2 <= pin27CC) + return 0; +//--------------------------------------------------------------------------- + srcbuff3 = srcbuff; + for(;;) + { + if(srcbuff3[nreps-1] == pin27CC[nreps-1] && *srcbuff3 == *pin27CC) + { + pin27CC++; + srcbuff3++; + for(ebx = 2; ebx < DICT_OFFSET; ebx++) + { + pin27CC++; + srcbuff3++; + if(*pin27CC != *srcbuff3) + break; + } + + srcbuff3 = srcbuff; + if(ebx >= nreps) + { + pWork->offs0000 = srcbuff3 - pin27CC + ebx - 1; + if((nreps = ebx) > 10) + break; + } + } + + pin49D0++; + esp18++; + pin27CC = pWork->work_buff + *pin49D0; + + if(srcbuff2 > pin27CC) + continue; + + return (nreps >= 2) ? nreps : 0; + } +//--------------------------------------------------------------------------- + if(ebx == DICT_OFFSET) + { + pWork->offs0000--; + return ebx; + } +//--------------------------------------------------------------------------- + pin49D0 = pWork->offs49D0 + esp18; + if(pWork->work_buff + pin49D0[1] >= srcbuff2) + return nreps; +//--------------------------------------------------------------------------- + di = 0; + pWork->offs09BC[0] = 0xFFFF; + pWork->offs09BC[1] = di; + esp12 = 1; + + do + { + esi = di; + if(srcbuff[esp12] != srcbuff[esi]) + { + di = pWork->offs09BC[esi]; + if(di != 0xFFFF) + continue; + } + pWork->offs09BC[++esp12] = ++di; + } + while(esp12 < nreps); +//--------------------------------------------------------------------------- + esi = nreps; + pin27CC = pWork->work_buff + pin49D0[0] + nreps; + esp14 = pin27CC; + + for(;;) // 0040268B + { + esi = pWork->offs09BC[esi]; + if(esi == 0xFFFF) + esi = 0; + + pin49D0 = pWork->offs49D0 + esp18; + do + { + pin49D0++; + esp18++; + pin27CC = pWork->work_buff + pin49D0[0]; + if(pin27CC >= srcbuff2) + return nreps; + } + while(pin27CC + esi < esp14); +//--------------------------------------------------------------------------- + esp20 = srcbuff[nreps - 2]; + if(esp20 == pin27CC[nreps - 2]) + { + if(pin27CC + esi != esp14) + { + esp14 = pin27CC; + esi = 0; + } + } + else + { + pin49D0 = pWork->offs49D0 + esp18; + do + { + pin49D0++; + esp18++; + pin27CC = pWork->work_buff + pin49D0[0]; + if(pin27CC >= srcbuff2) + return nreps; + } + while(pin27CC[nreps - 2] != esp20 || pin27CC[0] != *srcbuff); + + esp14 = pin27CC + 2; + esi = 2; + } +//--------------------------------------------------------------------------- + for(; esp14[0] == srcbuff[esi]; esp14++) + { + if(++esi >= DICT_OFFSET) + break; + } + + if(esi < nreps) + continue; + pWork->offs0000 = srcbuff - pin27CC - 1; + if(esi <= nreps) + continue; + nreps = esi; + if(esi == DICT_OFFSET) + return nreps; + + do + { + if(srcbuff[esp12] != srcbuff[di]) + { + di = pWork->offs09BC[di]; + if(di != 0xFFFF) + continue; + } + pWork->offs09BC[++esp12] = ++di; + } + while(esp12 < esi); + } +} + +static void WriteCmpData(TCmpStruct * pWork) +{ + unsigned int nreps = 0; // ESP+10 : Number of repeats + unsigned char * uncmp_end; // ESP+14 : End of uncompressed data + unsigned int esp18 = 0; // ESP+18 : + unsigned int bytes_required; // ESP+1C : Number of bytes required to read + unsigned int esp20 = 0; // ESP+20 : + unsigned char * uncmp_begin = &pWork->work_buff[UNCMP_OFFSET]; // EDI + unsigned long nreps1; + unsigned long save_offs0000 = 0; + int total_loaded = 0; + + // Store the compression type and dictionary size + pWork->out_buff[0] = (char)pWork->ctype; + pWork->out_buff[1] = (char)pWork->dsize_bits; + pWork->out_bytes = 2; + + // Reset output buffer to zero + SMemZero(&pWork->out_buff[2], sizeof(pWork->out_buff) - 2); + pWork->out_bits = 0; + + do { + total_loaded = 0; + bytes_required = 0x1000; + + do { + int loaded = pWork->read_buf(&pWork->work_buff[UNCMP_OFFSET + total_loaded], &bytes_required, pWork->param); + + if (loaded == 0) { + if (total_loaded == 0 && esp20 == 0) { + OutputBits(pWork, pWork->nChBits[0x305], pWork->nChCodes[0x305]); + + if (pWork->out_bits != 0) + ++pWork->out_bytes; + + pWork->write_buf(pWork->out_buff, &pWork->out_bytes, pWork->param); + return; + } + + esp18 = 1; + break; + } + + total_loaded += loaded; + bytes_required -= loaded; + } while (bytes_required); + + uncmp_end = &pWork->work_buff[pWork->dsize_bytes + total_loaded]; + + if (esp18 != 0) + uncmp_end += DICT_OFFSET; + + if (esp20) { + if (esp20 == 1) { + SortBuffer(pWork, uncmp_begin - pWork->dsize_bytes + DICT_OFFSET, uncmp_end + 1); + ++esp20; + } + else { + SortBuffer(pWork, uncmp_begin - pWork->dsize_bytes, uncmp_end + 1); + } + } + else { + SortBuffer(pWork, uncmp_begin, uncmp_end + 1); + ++esp20; + + if (pWork->dsize_bytes != 0x1000) + ++esp20; + } + + while (uncmp_end > uncmp_begin) { + nreps1 = FindRep(pWork, uncmp_begin); + + while (nreps1) { + if (nreps1 == 2 && pWork->offs0000 >= 0x100) + break; + + if (esp18 != 0 && uncmp_begin + nreps1 > uncmp_end) { + if ((nreps1 = uncmp_end - uncmp_begin) < 2) + break; + + if (nreps1 != 2 || pWork->offs0000 < 0x100) + goto loc_15036C7F; + + break; + } + + if (nreps1 >= 8 || uncmp_begin + 1 >= uncmp_end) + goto loc_15036C7F; + + save_offs0000 = pWork->offs0000; // ebp + nreps = nreps1; + nreps1 = FindRep(pWork, uncmp_begin + 1); + + if (nreps >= nreps1) + goto loc_15036C79; + + if (nreps + 1 >= nreps1 && save_offs0000 <= 0x80) + goto loc_15036C79; + + OutputBits(pWork, pWork->nChBits[*uncmp_begin], pWork->nChCodes[*uncmp_begin]); + ++uncmp_begin; + } + + OutputBits(pWork, pWork->nChBits[*uncmp_begin], pWork->nChCodes[*uncmp_begin]); + ++uncmp_begin; + continue; + +loc_15036C79: + nreps1 = nreps; + pWork->offs0000 = save_offs0000; + +loc_15036C7F: + OutputBits(pWork, pWork->nChBits[nreps1 + 0xFE], pWork->nChCodes[nreps1 + 0xFE]); + + if (nreps1 == 2) { + OutputBits(pWork, pWork->dist_bits[pWork->offs0000 >> 2], pWork->dist_codes[pWork->offs0000 >> 2]); + OutputBits(pWork, 2, pWork->offs0000 & 3); + } + else { + OutputBits(pWork, pWork->dist_bits[pWork->offs0000 >> pWork->dsize_bits], pWork->dist_codes[pWork->offs0000 >> pWork->dsize_bits]); + OutputBits(pWork, pWork->dsize_bits, pWork->offs0000 & pWork->dsize_mask); + } + + uncmp_begin += nreps1; + } + + if (esp18 != 0) { + OutputBits(pWork, pWork->nChBits[0x305], pWork->nChCodes[0x305]); + + if (pWork->out_bits != 0) + ++pWork->out_bytes; + + pWork->write_buf(pWork->out_buff, &pWork->out_bytes, pWork->param); + return; + } + + uncmp_begin -= 0x1000; + SMemCopy(pWork->work_buff, &pWork->work_buff[0x1000], UNCMP_OFFSET); + } while (esp18 == 0); +} + +//----------------------------------------------------------------------------- +// Main imploding function + +unsigned int PKEXPORT implode( + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param), + void (*write_buf)(char *buf, unsigned int *size, void *param), + char *work_buf, + void *param, + unsigned int *type, + unsigned int *dsize) +{ + TCmpStruct * pWork = (TCmpStruct *)work_buf; + unsigned int nChCode; + unsigned int nCount; + unsigned int i; + + // Fill the work buffer information + pWork->read_buf = read_buf; + pWork->write_buf = write_buf; + pWork->dsize_bytes = *dsize; + pWork->ctype = *type; + pWork->param = param; + pWork->dsize_bits = 4; + pWork->dsize_mask = 0x0F; + + // Test dictionary size + switch(*dsize) + { + case 0x1000 : + pWork->dsize_bits++; + pWork->dsize_mask |= 0x20; + // No break here !!! + + case 0x0800 : + pWork->dsize_bits++; + pWork->dsize_mask |= 0x10; + // No break here !!! + + case 0x0400 : + break; + + default: + return CMP_INVALID_DICTSIZE; + } + + // Test the compression type + switch(*type) + { + case CMP_BINARY: // We will compress data with binary compression type + for(nChCode = 0, nCount = 0; nCount < 0x100; nCount++) + { + pWork->nChBits[nCount] = 9; + pWork->nChCodes[nCount] = (unsigned short)nChCode; + nChCode = (nChCode & 0x0000FFFF) + 2; + } + break; + + + case CMP_ASCII: // We will compress data with ASCII compression type + for(nCount = 0; nCount < 0x100; nCount++) + { + pWork->nChBits[nCount] = (unsigned char )(ChBitsAsc[nCount] + 1); + pWork->nChCodes[nCount] = (unsigned short)(ChCodeAsc[nCount] * 2); + } + break; + + default: + return CMP_INVALID_MODE; + } + + for(i = 0; i < 0x10; i++) + { + int nCount2 = 0; // EBX + + if((1 << ExLenBits[i]) == 0) + continue; + + do + { + pWork->nChBits[nCount] = (unsigned char)(ExLenBits[i] + LenBits[i] + 1); + pWork->nChCodes[nCount] = (unsigned short)((nCount2 << (LenBits[i] + 1)) | ((LenCode[i] & 0xFFFF00FF) * 2) | 1); + + nCount2++; + nCount++; + } + while((1 << ExLenBits[i]) > nCount2); + } + + // Copy the distance codes and distance bits and perform the compression + SMemCopy(&pWork->dist_codes, DistCode, sizeof(DistCode)); + SMemCopy(&pWork->dist_bits, DistBits, sizeof(DistBits)); + WriteCmpData(pWork); + return CMP_NO_ERROR; +} diff --git a/license.txt b/license.txt new file mode 100644 index 0000000..94d5ecb --- /dev/null +++ b/license.txt @@ -0,0 +1,24 @@ +Copyright (c) 2002-2008, ShadowFlare +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. \ No newline at end of file diff --git a/pklib.h b/pklib.h new file mode 100644 index 0000000..bbc345b --- /dev/null +++ b/pklib.h @@ -0,0 +1,67 @@ +/*****************************************************************************/ +/* pklib.h Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Header file for PKWARE Data Compression Library */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 31.03.03 1.00 Lad The first version of pkware.h */ +/*****************************************************************************/ + +#ifndef __PKLIB_H__ +#define __PKLIB_H__ + +//----------------------------------------------------------------------------- +// Defines + +#define CMP_BUFFER_SIZE 36312 // Size of compression buffer +#define EXP_BUFFER_SIZE 12596 // Size of decompress buffer + +#define CMP_BINARY 0 // Binary compression +#define CMP_ASCII 1 // Ascii compression + +#define CMP_NO_ERROR 0 +#define CMP_INVALID_DICTSIZE 1 +#define CMP_INVALID_MODE 2 +#define CMP_BAD_DATA 3 +#define CMP_ABORT 4 + +//----------------------------------------------------------------------------- +// Define calling convention + +#define PKEXPORT +//#define PKEXPORT __cdecl // Use for normal __cdecl calling +//#define PKEXPORT __stdcall +//#define PKEXPORT __fastcall + +//----------------------------------------------------------------------------- +// Public functions + +#ifdef __cplusplus + extern "C" { +#endif + +unsigned int PKEXPORT implode( + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param), + void (*write_buf)(char *buf, unsigned int *size, void *param), + char *work_buf, + void *param, + unsigned int *type, + unsigned int *dsize); + + +unsigned int PKEXPORT explode( + unsigned int (*read_buf)(char *buf, unsigned int *size, void *param), + void (*write_buf)(char *buf, unsigned int *size, void *param), + char *work_buf, + void *param); + +// The original name "crc32" was changed to "crc32pk" due +// to compatibility with zlib +unsigned long PKEXPORT crc32pk(char *buffer, unsigned int *size, unsigned long *old_crc); + +#ifdef __cplusplus + } // End of 'extern "C"' declaration +#endif + +#endif // __PKLIB_H__ diff --git a/wave.cpp b/wave.cpp new file mode 100644 index 0000000..374b07a --- /dev/null +++ b/wave.cpp @@ -0,0 +1,360 @@ +/*****************************************************************************/ +/* wave.cpp Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* This module contains decompression methods used by Storm.dll to decompress*/ +/* WAVe files. Thanks to Tom Amigo for releasing his sources. */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 11.03.03 1.00 Lad Splitted from Pkware.cpp */ +/* 20.05.03 2.00 Lad Added compression */ +/*****************************************************************************/ + +#include "wave.h" + +//------------------------------------------------------------------------------ +// Structures + +union TByteAndWordPtr +{ + unsigned short * pw; + unsigned char * pb; +}; + +//----------------------------------------------------------------------------- +// Tables necessary dor decompression + +static unsigned long Table1503F120[] = +{ + 0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000004, 0xFFFFFFFF, 0x00000002, 0xFFFFFFFF, 0x00000006, + 0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0x00000005, 0xFFFFFFFF, 0x00000003, 0xFFFFFFFF, 0x00000007, + 0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0x00000005, 0xFFFFFFFF, 0x00000003, 0xFFFFFFFF, 0x00000007, + 0xFFFFFFFF, 0x00000002, 0xFFFFFFFF, 0x00000004, 0xFFFFFFFF, 0x00000006, 0xFFFFFFFF, 0x00000008 +}; + +static unsigned long Table1503F1A0[] = +{ + 0x00000007, 0x00000008, 0x00000009, 0x0000000A, 0x0000000B, 0x0000000C, 0x0000000D, 0x0000000E, + 0x00000010, 0x00000011, 0x00000013, 0x00000015, 0x00000017, 0x00000019, 0x0000001C, 0x0000001F, + 0x00000022, 0x00000025, 0x00000029, 0x0000002D, 0x00000032, 0x00000037, 0x0000003C, 0x00000042, + 0x00000049, 0x00000050, 0x00000058, 0x00000061, 0x0000006B, 0x00000076, 0x00000082, 0x0000008F, + 0x0000009D, 0x000000AD, 0x000000BE, 0x000000D1, 0x000000E6, 0x000000FD, 0x00000117, 0x00000133, + 0x00000151, 0x00000173, 0x00000198, 0x000001C1, 0x000001EE, 0x00000220, 0x00000256, 0x00000292, + 0x000002D4, 0x0000031C, 0x0000036C, 0x000003C3, 0x00000424, 0x0000048E, 0x00000502, 0x00000583, + 0x00000610, 0x000006AB, 0x00000756, 0x00000812, 0x000008E0, 0x000009C3, 0x00000ABD, 0x00000BD0, + 0x00000CFF, 0x00000E4C, 0x00000FBA, 0x0000114C, 0x00001307, 0x000014EE, 0x00001706, 0x00001954, + 0x00001BDC, 0x00001EA5, 0x000021B6, 0x00002515, 0x000028CA, 0x00002CDF, 0x0000315B, 0x0000364B, + 0x00003BB9, 0x000041B2, 0x00004844, 0x00004F7E, 0x00005771, 0x0000602F, 0x000069CE, 0x00007462, + 0x00007FFF +}; + +//---------------------------------------------------------------------------- +// CompressWave + +int CompressWave(unsigned char * pbOutBuffer, int dwOutLength, short * pwInBuffer, int dwInLength, int nChannels, int nCmpLevel) +{ + TByteAndWordPtr out; // Output buffer + long nArray3[2]; // EBP-48 + long nArray2[2]; // EBP-40 + long nArray1[2]; // EBP-38 + long nWords; // EBP-30 + unsigned EBP2C; // EBP-2C + long nRemains = dwOutLength; // EBP-28 : Number of bytes remaining + long nCmpType2; // EBP-24 + unsigned dwStopBit; // EBP-20 + long EBP1C; // EBP-1C + unsigned dwBitBuff; // EBP-18 +// char * pbOutPos = pbOutBuffer; // EBP-14 : Saved pointer to the output buffer + long nLength; // EBP-10 : + long nIndex; // EBP-0C : +// short * pwOutPos = pwInBuffer; // EBP-08 : Current output pointer + // EBP-04 : + unsigned short wCmp; // EBP-02 : + unsigned dwBit; // EBP+08 : A Bit + long nTableValue; + long nOneWord; + long nValue; + + if(dwInLength < 2) + return 2; + + // ebx = nChannels; + wCmp = (unsigned char)(nCmpLevel - 1); + out.pb = pbOutBuffer; + *out.pb++ = 0; + *out.pb++ = (unsigned char)wCmp; + + if((out.pb - pbOutBuffer + nChannels * 2) > nRemains) + return out.pb - pbOutBuffer + nChannels * 2; + + nArray1[0] = nArray1[1] = 0x2C; + + if(nChannels > 0) + { + for(int i = 0; i < nChannels; i++) + { + nOneWord = *pwInBuffer++; + *out.pw++ = (unsigned short)nOneWord; + nArray2[i] = nOneWord; + } + } + + nLength = dwInLength; + if(nLength < 0) // mov eax, dwInLength; cdq; sub eax, edx; + nLength++; + nLength = (nLength / 2) - (out.pb - pbOutBuffer); + nLength = (nLength < 0) ? 0 : nLength; + nCmpType2 = nChannels; + + nIndex = nChannels - 1; // edi + nWords = dwInLength / 2; // eax + if(nWords <= nChannels) + return out.pb - pbOutBuffer; + + // ebx - nChannels + // ecx - pwOutPos + do // 1500F02D + { + if((out.pb - pbOutBuffer + 2) > nRemains) + return out.pb - pbOutBuffer + 2; + + if(nChannels == 2) + nIndex = (nIndex == 0) ? 1 : 0; + + nOneWord = *pwInBuffer++; // ecx - nOneWord + // esi - nArray2[nIndex] + nValue = nOneWord - nArray2[nIndex]; + if(nValue < 0) + nValue = ~nValue + 1; // eax + + unsigned ebx = (nOneWord >= nArray2[nIndex]) ? 1 : 0; + // esi - nArray1[nIndex] + // edx - Table1503F1A0[nArray1[nIndex]] + nArray3[nIndex] = nOneWord; + + // edi - Table1503F1A0[nArray1[nIndex]] >> nCmpLevel + ebx = (ebx - 1) & 0x40; + dwStopBit = nCmpLevel; + + // edi - nIndex; + nTableValue = Table1503F1A0[nArray1[nIndex]]; + if(nValue < (nTableValue >> nCmpLevel)) + { + if(nArray1[nIndex] != 0) + nArray1[nIndex]--; + *out.pb++ = 0x80; + } + else + { + while(nValue > nTableValue * 2) + { // 1500F0C0 + if(nArray1[nIndex] >= 0x58 || nLength == 0) + break; + + nArray1[nIndex] += 8; + if(nArray1[nIndex] > 0x58) + nArray1[nIndex] = 0x58; + + nTableValue = Table1503F1A0[nArray1[nIndex]]; + *out.pb++ = 0x81; + nLength--; + } + + dwBitBuff = 0; + EBP2C = nTableValue >> wCmp; + unsigned esi = 1 << (dwStopBit - 2); + EBP1C = 0; + dwBit = 1; + dwStopBit = 0x20; + + if(esi <= 0x20) + dwStopBit = esi; + for(;;) + { +// esi = EBP1C + nTableValue; + if((EBP1C + nTableValue) <= nValue) + { + EBP1C += nTableValue; + dwBitBuff |= dwBit; + } + if(dwBit == dwStopBit) + break; + + nTableValue >>= 1; + dwBit <<= 1; + } + + nValue = nArray2[nIndex]; + if(ebx != 0) + { + nValue -= (EBP1C + EBP2C); + if(nValue < (int)0xFFFF8000) + nValue = (int)0xFFFF8000; + } + else + { + nValue += (EBP1C + EBP2C); + if(nValue > 0x00007FFF) + nValue = 0x00007FFF; + } + + nArray2[nIndex] = nValue; + *out.pb++ = (unsigned char)(dwBitBuff | ebx); + nTableValue = Table1503F120[dwBitBuff & 0x1F]; + nArray1[nIndex] += nTableValue; + if(nArray1[nIndex] < 0) + nArray1[nIndex] = 0; + else if(nArray1[nIndex] > 0x58) + nArray1[nIndex] = 0x58; + } + // 1500F1D8 + } + while(++nCmpType2 < nWords); + + return out.pb - pbOutBuffer; +} + +//---------------------------------------------------------------------------- +// DecompressWave + +// 1500F230 +int DecompressWave(unsigned char * pbOutBuffer, int dwOutLength, unsigned char * pbInBuffer, int dwInLength, int nChannels) +{ + TByteAndWordPtr out; + TByteAndWordPtr in; + unsigned char * pbInEnd = pbInBuffer + dwInLength; // End on input buffer + unsigned long index; + long nArray1[2]; + long nArray2[2]; + + out.pb = pbOutBuffer; + in.pb = pbInBuffer; + nArray1[0] = 0x2C; + nArray1[1] = 0x2C; + in.pw++; + + // 15007AD7 + if(nChannels > 0) + { + for(int count = 0; count < nChannels; count++) + { + long temp; + + temp = *(short *)in.pw++; + nArray2[count] = temp; + + if(dwOutLength < 2) + return out.pb - pbOutBuffer; + + *out.pw++ = (unsigned short)temp; + dwOutLength -= 2; + } + } + + index = nChannels - 1; + while(in.pb < pbInEnd) + { + unsigned char oneByte = *in.pb++; + + if(nChannels == 2) + index = (index == 0) ? 1 : 0; + + // Get one byte from input buffer + // 15007B25 + if(oneByte & 0x80) + { + // 15007B32 + switch(oneByte & 0x7F) + { + case 0: // 15007B8E + if(nArray1[index] != 0) + nArray1[index]--; + + if(dwOutLength < 2) + break; + + *out.pw++ = (unsigned short)nArray2[index]; + dwOutLength -= 2; + continue; + + case 1: // 15007B72 + nArray1[index] += 8; // EBX also + if(nArray1[index] > 0x58) + nArray1[index] = 0x58; + if(nChannels == 2) + index = (index == 0) ? 1 : 0; + continue; + + case 2: + continue; + + default: + nArray1[index] -= 8; + if(nArray1[index] < 0) + nArray1[index] = 0; + + if(nChannels != 2) + continue; + + index = (index == 0) ? 1 : 0; + continue; + } + } + else + { + unsigned long temp1 = Table1503F1A0[nArray1[index]]; // EDI + unsigned long temp2 = temp1 >> pbInBuffer[1]; // ESI + long temp3 = nArray2[index]; // ECX + + if(oneByte & 0x01) // EBX = oneByte + temp2 += (temp1 >> 0); + + if(oneByte & 0x02) + temp2 += (temp1 >> 1); + + if(oneByte & 0x04) + temp2 += (temp1 >> 2); + + if(oneByte & 0x08) + temp2 += (temp1 >> 3); + + if(oneByte & 0x10) + temp2 += (temp1 >> 4); + + if(oneByte & 0x20) + temp2 += (temp1 >> 5); + + if(oneByte & 0x40) + { + temp3 -= temp2; + if(temp3 <= (long)0xFFFF8000) + temp3 = (long)0xFFFF8000; + } + else + { + temp3 += temp2; + if(temp3 >= 0x7FFF) + temp3 = 0x7FFF; + } + nArray2[index] = temp3; + if(dwOutLength < 2) + break; + + temp2 = nArray1[index]; + oneByte &= 0x1F; + + *out.pw++ = (unsigned short)temp3; + dwOutLength -= 2; + + temp2 += Table1503F120[oneByte]; + nArray1[index] = temp2; + + if(nArray1[index] < 0) + nArray1[index] = 0; + else if(nArray1[index] > 0x58) + nArray1[index] = 0x58; + } + } + return (out.pb - pbOutBuffer); +} + diff --git a/wave.h b/wave.h new file mode 100644 index 0000000..f4ae687 --- /dev/null +++ b/wave.h @@ -0,0 +1,20 @@ +/*****************************************************************************/ +/* Wave.h Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Header file for WAVe unplode functions */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 31.03.03 1.00 Lad The first version of Wave.h */ +/*****************************************************************************/ + +#ifndef __WAVE_H__ +#define __WAVE_H__ + +//----------------------------------------------------------------------------- +// Functions + +int CompressWave (unsigned char * pbOutBuffer, int dwOutLength, short * pwInBuffer, int dwInLength, int nChannels, int nCmpLevel); +int DecompressWave(unsigned char * pbOutBuffer, int dwOutLength, unsigned char * pbInBuffer, int dwInLength, int nChannels); + +#endif // __WAVE_H__ diff --git a/wintypes.h b/wintypes.h new file mode 100644 index 0000000..dd411d3 --- /dev/null +++ b/wintypes.h @@ -0,0 +1,38 @@ +// wintypes.h - Windows data types +// (when not compiling for Windows) +// License information for this code is in license.txt + +#ifndef WIN_TYPES_INCLUDED +#define WIN_TYPES_INCLUDED + +#define WINAPI +#define CDECL +#define __fastcall + +#define CONST const + +typedef void VOID; +typedef void *LPVOID; +typedef CONST void *LPCVOID; +typedef const char *LPCSTR; +typedef unsigned char BYTE; +typedef BYTE *LPBYTE; +typedef unsigned short WORD; +typedef WORD *LPWORD; +typedef short SHORT; +typedef unsigned long DWORD; +typedef DWORD *LPDWORD; +typedef long LONG; +typedef LONG *LPLONG; + +typedef int BOOL; +typedef int (WINAPI *FARPROC)(); + +#define FALSE 0 +#define TRUE 1 + +#define ERROR_NOT_ENOUGH_MEMORY 8L +#define ERROR_INVALID_PARAMETER 87L + +#endif + diff --git a/zconf.h b/zconf.h new file mode 100644 index 0000000..eb0ae2e --- /dev/null +++ b/zconf.h @@ -0,0 +1,279 @@ +/* zconf.h -- configuration of the zlib compression library + * Copyright (C) 1995-2002 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#ifndef _ZCONF_H +#define _ZCONF_H + +/* + * If you *really* need a unique prefix for all types and library functions, + * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. + */ +#ifdef Z_PREFIX +# define deflateInit_ z_deflateInit_ +# define deflate z_deflate +# define deflateEnd z_deflateEnd +# define inflateInit_ z_inflateInit_ +# define inflate z_inflate +# define inflateEnd z_inflateEnd +# define deflateInit2_ z_deflateInit2_ +# define deflateSetDictionary z_deflateSetDictionary +# define deflateCopy z_deflateCopy +# define deflateReset z_deflateReset +# define deflateParams z_deflateParams +# define inflateInit2_ z_inflateInit2_ +# define inflateSetDictionary z_inflateSetDictionary +# define inflateSync z_inflateSync +# define inflateSyncPoint z_inflateSyncPoint +# define inflateReset z_inflateReset +# define compress z_compress +# define compress2 z_compress2 +# define uncompress z_uncompress +# define adler32 z_adler32 +# define crc32 z_crc32 +# define get_crc_table z_get_crc_table + +# define Byte z_Byte +# define uInt z_uInt +# define uLong z_uLong +# define Bytef z_Bytef +# define charf z_charf +# define intf z_intf +# define uIntf z_uIntf +# define uLongf z_uLongf +# define voidpf z_voidpf +# define voidp z_voidp +#endif + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +# define WIN32 +#endif +#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386) +# ifndef __32BIT__ +# define __32BIT__ +# endif +#endif +#if defined(__MSDOS__) && !defined(MSDOS) +# define MSDOS +#endif + +/* + * Compile with -DMAXSEG_64K if the alloc function cannot allocate more + * than 64k bytes at a time (needed on systems with 16-bit int). + */ +#if defined(MSDOS) && !defined(__32BIT__) +# define MAXSEG_64K +#endif +#ifdef MSDOS +# define UNALIGNED_OK +#endif + +#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32)) && !defined(STDC) +# define STDC +#endif +#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__) +# ifndef STDC +# define STDC +# endif +#endif + +#ifndef STDC +# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ +# define const +# endif +#endif + +/* Some Mac compilers merge all .h files incorrectly: */ +#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__) +# define NO_DUMMY_DECL +#endif + +/* Old Borland C incorrectly complains about missing returns: */ +#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500) +# define NEED_DUMMY_RETURN +#endif + + +/* Maximum value for memLevel in deflateInit2 */ +#ifndef MAX_MEM_LEVEL +# ifdef MAXSEG_64K +# define MAX_MEM_LEVEL 8 +# else +# define MAX_MEM_LEVEL 9 +# endif +#endif + +/* Maximum value for windowBits in deflateInit2 and inflateInit2. + * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files + * created by gzip. (Files created by minigzip can still be extracted by + * gzip.) + */ +#ifndef MAX_WBITS +# define MAX_WBITS 15 /* 32K LZ77 window */ +#endif + +/* The memory requirements for deflate are (in bytes): + (1 << (windowBits+2)) + (1 << (memLevel+9)) + that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) + plus a few kilobytes for small objects. For example, if you want to reduce + the default memory requirements from 256K to 128K, compile with + make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" + Of course this will generally degrade compression (there's no free lunch). + + The memory requirements for inflate are (in bytes) 1 << windowBits + that is, 32K for windowBits=15 (default value) plus a few kilobytes + for small objects. +*/ + + /* Type declarations */ + +#ifndef OF /* function prototypes */ +# ifdef STDC +# define OF(args) args +# else +# define OF(args) () +# endif +#endif + +/* The following definitions for FAR are needed only for MSDOS mixed + * model programming (small or medium model with some far allocations). + * This was tested only with MSC; for other MSDOS compilers you may have + * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, + * just define FAR to be empty. + */ +#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__) + /* MSC small or medium model */ +# define SMALL_MEDIUM +# ifdef _MSC_VER +# define FAR _far +# else +# define FAR far +# endif +#endif +#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__)) +# ifndef __32BIT__ +# define SMALL_MEDIUM +# define FAR _far +# endif +#endif + +/* Compile with -DZLIB_DLL for Windows DLL support */ +#if defined(ZLIB_DLL) +# if defined(_WINDOWS) || defined(WINDOWS) +# ifdef FAR +# undef FAR +# endif +# include +# define ZEXPORT WINAPI +# ifdef WIN32 +# define ZEXPORTVA WINAPIV +# else +# define ZEXPORTVA FAR _cdecl _export +# endif +# endif +# if defined (__BORLANDC__) +# if (__BORLANDC__ >= 0x0500) && defined (WIN32) +# include +# define ZEXPORT __declspec(dllexport) WINAPI +# define ZEXPORTRVA __declspec(dllexport) WINAPIV +# else +# if defined (_Windows) && defined (__DLL__) +# define ZEXPORT _export +# define ZEXPORTVA _export +# endif +# endif +# endif +#endif + +#if defined (__BEOS__) +# if defined (ZLIB_DLL) +# define ZEXTERN extern __declspec(dllexport) +# else +# define ZEXTERN extern __declspec(dllimport) +# endif +#endif + +#ifndef ZEXPORT +# define ZEXPORT +#endif +#ifndef ZEXPORTVA +# define ZEXPORTVA +#endif +#ifndef ZEXTERN +# define ZEXTERN extern +#endif + +#ifndef FAR +# define FAR +#endif + +#if !defined(MACOS) && !defined(TARGET_OS_MAC) +typedef unsigned char Byte; /* 8 bits */ +#endif +typedef unsigned int uInt; /* 16 bits or more */ +typedef unsigned long uLong; /* 32 bits or more */ + +#ifdef SMALL_MEDIUM + /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ +# define Bytef Byte FAR +#else + typedef Byte FAR Bytef; +#endif +typedef char FAR charf; +typedef int FAR intf; +typedef uInt FAR uIntf; +typedef uLong FAR uLongf; + +#ifdef STDC + typedef void FAR *voidpf; + typedef void *voidp; +#else + typedef Byte FAR *voidpf; + typedef Byte *voidp; +#endif + +#ifdef HAVE_UNISTD_H +# include /* for off_t */ +# include /* for SEEK_* and off_t */ +# define z_off_t off_t +#endif +#ifndef SEEK_SET +# define SEEK_SET 0 /* Seek from beginning of file. */ +# define SEEK_CUR 1 /* Seek from current position. */ +# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ +#endif +#ifndef z_off_t +# define z_off_t long +#endif + +/* MVS linker does not support external names larger than 8 bytes */ +#if defined(__MVS__) +# pragma map(deflateInit_,"DEIN") +# pragma map(deflateInit2_,"DEIN2") +# pragma map(deflateEnd,"DEEND") +# pragma map(inflateInit_,"ININ") +# pragma map(inflateInit2_,"ININ2") +# pragma map(inflateEnd,"INEND") +# pragma map(inflateSync,"INSY") +# pragma map(inflateSetDictionary,"INSEDI") +# pragma map(inflate_blocks,"INBL") +# pragma map(inflate_blocks_new,"INBLNE") +# pragma map(inflate_blocks_free,"INBLFR") +# pragma map(inflate_blocks_reset,"INBLRE") +# pragma map(inflate_codes_free,"INCOFR") +# pragma map(inflate_codes,"INCO") +# pragma map(inflate_fast,"INFA") +# pragma map(inflate_flush,"INFLU") +# pragma map(inflate_mask,"INMA") +# pragma map(inflate_set_dictionary,"INSEDI2") +# pragma map(inflate_copyright,"INCOPY") +# pragma map(inflate_trees_bits,"INTRBI") +# pragma map(inflate_trees_dynamic,"INTRDY") +# pragma map(inflate_trees_fixed,"INTRFI") +# pragma map(inflate_trees_free,"INTRFR") +#endif + +#endif /* _ZCONF_H */ diff --git a/zlib.h b/zlib.h new file mode 100644 index 0000000..52cb529 --- /dev/null +++ b/zlib.h @@ -0,0 +1,893 @@ +/* zlib.h -- interface of the 'zlib' general purpose compression library + version 1.1.4, March 11th, 2002 + + Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + Jean-loup Gailly Mark Adler + jloup@gzip.org madler@alumni.caltech.edu + + + The data format used by the zlib library is described by RFCs (Request for + Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt + (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format). +*/ + +#ifndef _ZLIB_H +#define _ZLIB_H + +#include "zconf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ZLIB_VERSION "1.1.4" + +/* + The 'zlib' compression library provides in-memory compression and + decompression functions, including integrity checks of the uncompressed + data. This version of the library supports only one compression method + (deflation) but other algorithms will be added later and will have the same + stream interface. + + Compression can be done in a single step if the buffers are large + enough (for example if an input file is mmap'ed), or can be done by + repeated calls of the compression function. In the latter case, the + application must provide more input and/or consume the output + (providing more output space) before each call. + + The library also supports reading and writing files in gzip (.gz) format + with an interface similar to that of stdio. + + The library does not install any signal handler. The decoder checks + the consistency of the compressed data, so the library should never + crash even in case of corrupted input. +*/ + +typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size)); +typedef void (*free_func) OF((voidpf opaque, voidpf address)); + +struct internal_state; + +typedef struct z_stream_s { + Bytef *next_in; /* next input byte */ + uInt avail_in; /* number of bytes available at next_in */ + uLong total_in; /* total nb of input bytes read so far */ + + Bytef *next_out; /* next output byte should be put there */ + uInt avail_out; /* remaining free space at next_out */ + uLong total_out; /* total nb of bytes output so far */ + + char *msg; /* last error message, NULL if no error */ + struct internal_state FAR *state; /* not visible by applications */ + + alloc_func zalloc; /* used to allocate the internal state */ + free_func zfree; /* used to free the internal state */ + voidpf opaque; /* private data object passed to zalloc and zfree */ + + int data_type; /* best guess about the data type: ascii or binary */ + uLong adler; /* adler32 value of the uncompressed data */ + uLong reserved; /* reserved for future use */ +} z_stream; + +typedef z_stream FAR *z_streamp; + +/* + The application must update next_in and avail_in when avail_in has + dropped to zero. It must update next_out and avail_out when avail_out + has dropped to zero. The application must initialize zalloc, zfree and + opaque before calling the init function. All other fields are set by the + compression library and must not be updated by the application. + + The opaque value provided by the application will be passed as the first + parameter for calls of zalloc and zfree. This can be useful for custom + memory management. The compression library attaches no meaning to the + opaque value. + + zalloc must return Z_NULL if there is not enough memory for the object. + If zlib is used in a multi-threaded application, zalloc and zfree must be + thread safe. + + On 16-bit systems, the functions zalloc and zfree must be able to allocate + exactly 65536 bytes, but will not be required to allocate more than this + if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, + pointers returned by zalloc for objects of exactly 65536 bytes *must* + have their offset normalized to zero. The default allocation function + provided by this library ensures this (see zutil.c). To reduce memory + requirements and avoid any allocation of 64K objects, at the expense of + compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h). + + The fields total_in and total_out can be used for statistics or + progress reports. After compression, total_in holds the total size of + the uncompressed data and may be saved for use in the decompressor + (particularly if the decompressor wants to decompress everything in + a single step). +*/ + + /* constants */ + +#define Z_NO_FLUSH 0 +#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */ +#define Z_SYNC_FLUSH 2 +#define Z_FULL_FLUSH 3 +#define Z_FINISH 4 +/* Allowed flush values; see deflate() below for details */ + +#define Z_OK 0 +#define Z_STREAM_END 1 +#define Z_NEED_DICT 2 +#define Z_ERRNO (-1) +#define Z_STREAM_ERROR (-2) +#define Z_DATA_ERROR (-3) +#define Z_MEM_ERROR (-4) +#define Z_BUF_ERROR (-5) +#define Z_VERSION_ERROR (-6) +/* Return codes for the compression/decompression functions. Negative + * values are errors, positive values are used for special but normal events. + */ + +#define Z_NO_COMPRESSION 0 +#define Z_BEST_SPEED 1 +#define Z_BEST_COMPRESSION 9 +#define Z_DEFAULT_COMPRESSION (-1) +/* compression levels */ + +#define Z_FILTERED 1 +#define Z_HUFFMAN_ONLY 2 +#define Z_DEFAULT_STRATEGY 0 +/* compression strategy; see deflateInit2() below for details */ + +#define Z_BINARY 0 +#define Z_ASCII 1 +#define Z_UNKNOWN 2 +/* Possible values of the data_type field */ + +#define Z_DEFLATED 8 +/* The deflate compression method (the only one supported in this version) */ + +#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ + +#define zlib_version zlibVersion() +/* for compatibility with versions < 1.0.2 */ + + /* basic functions */ + +ZEXTERN const char * ZEXPORT zlibVersion OF((void)); +/* The application can compare zlibVersion and ZLIB_VERSION for consistency. + If the first character differs, the library code actually used is + not compatible with the zlib.h header file used by the application. + This check is automatically made by deflateInit and inflateInit. + */ + +/* +ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level)); + + Initializes the internal stream state for compression. The fields + zalloc, zfree and opaque must be initialized before by the caller. + If zalloc and zfree are set to Z_NULL, deflateInit updates them to + use default allocation functions. + + The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: + 1 gives best speed, 9 gives best compression, 0 gives no compression at + all (the input data is simply copied a block at a time). + Z_DEFAULT_COMPRESSION requests a default compromise between speed and + compression (currently equivalent to level 6). + + deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if level is not a valid compression level, + Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible + with the version assumed by the caller (ZLIB_VERSION). + msg is set to null if there is no error message. deflateInit does not + perform any compression: this will be done by deflate(). +*/ + + +ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush)); +/* + deflate compresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce some + output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. deflate performs one or both of the + following actions: + + - Compress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in and avail_in are updated and + processing will resume at this point for the next call of deflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. This action is forced if the parameter flush is non zero. + Forcing flush frequently degrades the compression ratio, so this parameter + should be set only when necessary (in interactive applications). + Some output may be provided even if flush is not set. + + Before the call of deflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming + more output, and updating avail_in or avail_out accordingly; avail_out + should never be zero before the call. The application can consume the + compressed output when it wants, for example when the output buffer is full + (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK + and with zero avail_out, it must be called again after making room in the + output buffer because there might be more output pending. + + If the parameter flush is set to Z_SYNC_FLUSH, all pending output is + flushed to the output buffer and the output is aligned on a byte boundary, so + that the decompressor can get all input data available so far. (In particular + avail_in is zero after the call if enough output space has been provided + before the call.) Flushing may degrade compression for some compression + algorithms and so it should be used only when necessary. + + If flush is set to Z_FULL_FLUSH, all output is flushed as with + Z_SYNC_FLUSH, and the compression state is reset so that decompression can + restart from this point if previous compressed data has been damaged or if + random access is desired. Using Z_FULL_FLUSH too often can seriously degrade + the compression. + + If deflate returns with avail_out == 0, this function must be called again + with the same value of the flush parameter and more output space (updated + avail_out), until the flush is complete (deflate returns with non-zero + avail_out). + + If the parameter flush is set to Z_FINISH, pending input is processed, + pending output is flushed and deflate returns with Z_STREAM_END if there + was enough output space; if deflate returns with Z_OK, this function must be + called again with Z_FINISH and more output space (updated avail_out) but no + more input data, until it returns with Z_STREAM_END or an error. After + deflate has returned Z_STREAM_END, the only possible operations on the + stream are deflateReset or deflateEnd. + + Z_FINISH can be used immediately after deflateInit if all the compression + is to be done in a single step. In this case, avail_out must be at least + 0.1% larger than avail_in plus 12 bytes. If deflate does not return + Z_STREAM_END, then it must be called again as described above. + + deflate() sets strm->adler to the adler32 checksum of all input read + so far (that is, total_in bytes). + + deflate() may update data_type if it can make a good guess about + the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered + binary. This field is only for information purposes and does not affect + the compression algorithm in any manner. + + deflate() returns Z_OK if some progress has been made (more input + processed or more output produced), Z_STREAM_END if all input has been + consumed and all output has been produced (only when flush is set to + Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example + if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible + (for example avail_in or avail_out was zero). +*/ + + +ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any + pending output. + + deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the + stream state was inconsistent, Z_DATA_ERROR if the stream was freed + prematurely (some input or output was discarded). In the error case, + msg may be set but then points to a static string (which must not be + deallocated). +*/ + + +/* +ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm)); + + Initializes the internal stream state for decompression. The fields + next_in, avail_in, zalloc, zfree and opaque must be initialized before by + the caller. If next_in is not Z_NULL and avail_in is large enough (the exact + value depends on the compression method), inflateInit determines the + compression method from the zlib header and allocates all data structures + accordingly; otherwise the allocation will be deferred to the first call of + inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to + use default allocation functions. + + inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller. msg is set to null if there is no error + message. inflateInit does not perform any decompression apart from reading + the zlib header if present: this will be done by inflate(). (So next_in and + avail_in may be modified, but next_out and avail_out are unchanged.) +*/ + + +ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush)); +/* + inflate decompresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may some + introduce some output latency (reading input without producing any output) + except when forced to flush. + + The detailed semantics are as follows. inflate performs one or both of the + following actions: + + - Decompress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in is updated and processing + will resume at this point for the next call of inflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. inflate() provides as much output as possible, until there + is no more input data or no more space in the output buffer (see below + about the flush parameter). + + Before the call of inflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming + more output, and updating the next_* and avail_* values accordingly. + The application can consume the uncompressed output when it wants, for + example when the output buffer is full (avail_out == 0), or after each + call of inflate(). If inflate returns Z_OK and with zero avail_out, it + must be called again after making room in the output buffer because there + might be more output pending. + + If the parameter flush is set to Z_SYNC_FLUSH, inflate flushes as much + output as possible to the output buffer. The flushing behavior of inflate is + not specified for values of the flush parameter other than Z_SYNC_FLUSH + and Z_FINISH, but the current implementation actually flushes as much output + as possible anyway. + + inflate() should normally be called until it returns Z_STREAM_END or an + error. However if all decompression is to be performed in a single step + (a single call of inflate), the parameter flush should be set to + Z_FINISH. In this case all pending input is processed and all pending + output is flushed; avail_out must be large enough to hold all the + uncompressed data. (The size of the uncompressed data may have been saved + by the compressor for this purpose.) The next operation on this stream must + be inflateEnd to deallocate the decompression state. The use of Z_FINISH + is never required, but can be used to inform inflate that a faster routine + may be used for the single inflate() call. + + If a preset dictionary is needed at this point (see inflateSetDictionary + below), inflate sets strm-adler to the adler32 checksum of the + dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise + it sets strm->adler to the adler32 checksum of all output produced + so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or + an error code as described below. At the end of the stream, inflate() + checks that its computed adler32 checksum is equal to that saved by the + compressor and returns Z_STREAM_END only if the checksum is correct. + + inflate() returns Z_OK if some progress has been made (more input processed + or more output produced), Z_STREAM_END if the end of the compressed data has + been reached and all uncompressed output has been produced, Z_NEED_DICT if a + preset dictionary is needed at this point, Z_DATA_ERROR if the input data was + corrupted (input stream not conforming to the zlib format or incorrect + adler32 checksum), Z_STREAM_ERROR if the stream structure was inconsistent + (for example if next_in or next_out was NULL), Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if no progress is possible or if there was not + enough room in the output buffer when Z_FINISH is used. In the Z_DATA_ERROR + case, the application may then call inflateSync to look for a good + compression block. +*/ + + +ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any + pending output. + + inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state + was inconsistent. In the error case, msg may be set but then points to a + static string (which must not be deallocated). +*/ + + /* Advanced functions */ + +/* + The following functions are needed only in some special applications. +*/ + +/* +ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm, + int level, + int method, + int windowBits, + int memLevel, + int strategy)); + + This is another version of deflateInit with more compression options. The + fields next_in, zalloc, zfree and opaque must be initialized before by + the caller. + + The method parameter is the compression method. It must be Z_DEFLATED in + this version of the library. + + The windowBits parameter is the base two logarithm of the window size + (the size of the history buffer). It should be in the range 8..15 for this + version of the library. Larger values of this parameter result in better + compression at the expense of memory usage. The default value is 15 if + deflateInit is used instead. + + The memLevel parameter specifies how much memory should be allocated + for the internal compression state. memLevel=1 uses minimum memory but + is slow and reduces compression ratio; memLevel=9 uses maximum memory + for optimal speed. The default value is 8. See zconf.h for total memory + usage as a function of windowBits and memLevel. + + The strategy parameter is used to tune the compression algorithm. Use the + value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a + filter (or predictor), or Z_HUFFMAN_ONLY to force Huffman encoding only (no + string match). Filtered data consists mostly of small values with a + somewhat random distribution. In this case, the compression algorithm is + tuned to compress them better. The effect of Z_FILTERED is to force more + Huffman coding and less string matching; it is somewhat intermediate + between Z_DEFAULT and Z_HUFFMAN_ONLY. The strategy parameter only affects + the compression ratio but not the correctness of the compressed output even + if it is not set appropriately. + + deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid + method). msg is set to null if there is no error message. deflateInit2 does + not perform any compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the compression dictionary from the given byte sequence + without producing any compressed output. This function must be called + immediately after deflateInit, deflateInit2 or deflateReset, before any + call of deflate. The compressor and decompressor must use exactly the same + dictionary (see inflateSetDictionary). + + The dictionary should consist of strings (byte sequences) that are likely + to be encountered later in the data to be compressed, with the most commonly + used strings preferably put towards the end of the dictionary. Using a + dictionary is most useful when the data to be compressed is short and can be + predicted with good accuracy; the data can then be compressed better than + with the default empty dictionary. + + Depending on the size of the compression data structures selected by + deflateInit or deflateInit2, a part of the dictionary may in effect be + discarded, for example if the dictionary is larger than the window size in + deflate or deflate2. Thus the strings most likely to be useful should be + put at the end of the dictionary, not at the front. + + Upon return of this function, strm->adler is set to the Adler32 value + of the dictionary; the decompressor may later use this value to determine + which dictionary has been used by the compressor. (The Adler32 value + applies to the whole dictionary even if only a subset of the dictionary is + actually used by the compressor.) + + deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a + parameter is invalid (such as NULL dictionary) or the stream state is + inconsistent (for example if deflate has already been called for this stream + or if the compression method is bsort). deflateSetDictionary does not + perform any compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest, + z_streamp source)); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when several compression strategies will be + tried, for example when there are several ways of pre-processing the input + data with a filter. The streams that will be discarded should then be freed + by calling deflateEnd. Note that deflateCopy duplicates the internal + compression state which can be quite large, so this strategy is slow and + can consume lots of memory. + + deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being NULL). msg is left unchanged in both source and + destination. +*/ + +ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm)); +/* + This function is equivalent to deflateEnd followed by deflateInit, + but does not free and reallocate all the internal compression state. + The stream will keep the same compression level and any other attributes + that may have been set by deflateInit2. + + deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being NULL). +*/ + +ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm, + int level, + int strategy)); +/* + Dynamically update the compression level and compression strategy. The + interpretation of level and strategy is as in deflateInit2. This can be + used to switch between compression and straight copy of the input data, or + to switch to a different kind of input data requiring a different + strategy. If the compression level is changed, the input available so far + is compressed with the old level (and may be flushed); the new level will + take effect only at the next call of deflate(). + + Before the call of deflateParams, the stream state must be set as for + a call of deflate(), since the currently available input may have to + be compressed and flushed. In particular, strm->avail_out must be non-zero. + + deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source + stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR + if strm->avail_out was zero. +*/ + +/* +ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm, + int windowBits)); + + This is another version of inflateInit with an extra parameter. The + fields next_in, avail_in, zalloc, zfree and opaque must be initialized + before by the caller. + + The windowBits parameter is the base two logarithm of the maximum window + size (the size of the history buffer). It should be in the range 8..15 for + this version of the library. The default value is 15 if inflateInit is used + instead. If a compressed stream with a larger window size is given as + input, inflate() will return with the error code Z_DATA_ERROR instead of + trying to allocate a larger window. + + inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative + memLevel). msg is set to null if there is no error message. inflateInit2 + does not perform any decompression apart from reading the zlib header if + present: this will be done by inflate(). (So next_in and avail_in may be + modified, but next_out and avail_out are unchanged.) +*/ + +ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the decompression dictionary from the given uncompressed byte + sequence. This function must be called immediately after a call of inflate + if this call returned Z_NEED_DICT. The dictionary chosen by the compressor + can be determined from the Adler32 value returned by this call of + inflate. The compressor and decompressor must use exactly the same + dictionary (see deflateSetDictionary). + + inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a + parameter is invalid (such as NULL dictionary) or the stream state is + inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the + expected one (incorrect Adler32 value). inflateSetDictionary does not + perform any decompression: this will be done by subsequent calls of + inflate(). +*/ + +ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm)); +/* + Skips invalid compressed data until a full flush point (see above the + description of deflate with Z_FULL_FLUSH) can be found, or until all + available input is skipped. No output is provided. + + inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR + if no more input was provided, Z_DATA_ERROR if no flush point has been found, + or Z_STREAM_ERROR if the stream structure was inconsistent. In the success + case, the application may save the current current value of total_in which + indicates where valid compressed data was found. In the error case, the + application may repeatedly call inflateSync, providing more input each time, + until success or end of the input data. +*/ + +ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm)); +/* + This function is equivalent to inflateEnd followed by inflateInit, + but does not free and reallocate all the internal decompression state. + The stream will keep attributes that may have been set by inflateInit2. + + inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being NULL). +*/ + + + /* utility functions */ + +/* + The following utility functions are implemented on top of the + basic stream-oriented functions. To simplify the interface, some + default options are assumed (compression level and memory usage, + standard memory allocation functions). The source code of these + utility functions can easily be modified if you need special options. +*/ + +ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Compresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be at least 0.1% larger than + sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the + compressed buffer. + This function can be used to compress a whole file at once if the + input file is mmap'ed. + compress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer. +*/ + +ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen, + int level)); +/* + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least 0.1% larger than sourceLen plus + 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ + +ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be large enough to hold the + entire uncompressed data. (The size of the uncompressed data must have + been saved previously by the compressor and transmitted to the decompressor + by some mechanism outside the scope of this compression library.) + Upon exit, destLen is the actual size of the compressed buffer. + This function can be used to decompress a whole file at once if the + input file is mmap'ed. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer, or Z_DATA_ERROR if the input data was corrupted. +*/ + + +typedef voidp gzFile; + +ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode)); +/* + Opens a gzip (.gz) file for reading or writing. The mode parameter + is as in fopen ("rb" or "wb") but can also include a compression level + ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for + Huffman only compression as in "wb1h". (See the description + of deflateInit2 for more information about the strategy parameter.) + + gzopen can be used to read a file which is not in gzip format; in this + case gzread will directly read from the file without decompression. + + gzopen returns NULL if the file could not be opened or if there was + insufficient memory to allocate the (de)compression state; errno + can be checked to distinguish the two cases (if errno is zero, the + zlib error is Z_MEM_ERROR). */ + +ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode)); +/* + gzdopen() associates a gzFile with the file descriptor fd. File + descriptors are obtained from calls like open, dup, creat, pipe or + fileno (in the file has been previously opened with fopen). + The mode parameter is as in gzopen. + The next call of gzclose on the returned gzFile will also close the + file descriptor fd, just like fclose(fdopen(fd), mode) closes the file + descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode). + gzdopen returns NULL if there was insufficient memory to allocate + the (de)compression state. +*/ + +ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy)); +/* + Dynamically update the compression level or strategy. See the description + of deflateInit2 for the meaning of these parameters. + gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not + opened for writing. +*/ + +ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len)); +/* + Reads the given number of uncompressed bytes from the compressed file. + If the input file was not in gzip format, gzread copies the given number + of bytes into the buffer. + gzread returns the number of uncompressed bytes actually read (0 for + end of file, -1 for error). */ + +ZEXTERN int ZEXPORT gzwrite OF((gzFile file, + const voidp buf, unsigned len)); +/* + Writes the given number of uncompressed bytes into the compressed file. + gzwrite returns the number of uncompressed bytes actually written + (0 in case of error). +*/ + +ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...)); +/* + Converts, formats, and writes the args to the compressed file under + control of the format string, as in fprintf. gzprintf returns the number of + uncompressed bytes actually written (0 in case of error). +*/ + +ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s)); +/* + Writes the given null-terminated string to the compressed file, excluding + the terminating null character. + gzputs returns the number of characters written, or -1 in case of error. +*/ + +ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len)); +/* + Reads bytes from the compressed file until len-1 characters are read, or + a newline character is read and transferred to buf, or an end-of-file + condition is encountered. The string is then terminated with a null + character. + gzgets returns buf, or Z_NULL in case of error. +*/ + +ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c)); +/* + Writes c, converted to an unsigned char, into the compressed file. + gzputc returns the value that was written, or -1 in case of error. +*/ + +ZEXTERN int ZEXPORT gzgetc OF((gzFile file)); +/* + Reads one byte from the compressed file. gzgetc returns this byte + or -1 in case of end of file or error. +*/ + +ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush)); +/* + Flushes all pending output into the compressed file. The parameter + flush is as in the deflate() function. The return value is the zlib + error number (see function gzerror below). gzflush returns Z_OK if + the flush parameter is Z_FINISH and all output could be flushed. + gzflush should be called only when strictly necessary because it can + degrade compression. +*/ + +ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file, + z_off_t offset, int whence)); +/* + Sets the starting position for the next gzread or gzwrite on the + given compressed file. The offset represents a number of bytes in the + uncompressed data stream. The whence parameter is defined as in lseek(2); + the value SEEK_END is not supported. + If the file is opened for reading, this function is emulated but can be + extremely slow. If the file is opened for writing, only forward seeks are + supported; gzseek then compresses a sequence of zeroes up to the new + starting position. + + gzseek returns the resulting offset location as measured in bytes from + the beginning of the uncompressed stream, or -1 in case of error, in + particular if the file is opened for writing and the new starting position + would be before the current position. +*/ + +ZEXTERN int ZEXPORT gzrewind OF((gzFile file)); +/* + Rewinds the given file. This function is supported only for reading. + + gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) +*/ + +ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file)); +/* + Returns the starting position for the next gzread or gzwrite on the + given compressed file. This position represents a number of bytes in the + uncompressed data stream. + + gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) +*/ + +ZEXTERN int ZEXPORT gzeof OF((gzFile file)); +/* + Returns 1 when EOF has previously been detected reading the given + input stream, otherwise zero. +*/ + +ZEXTERN int ZEXPORT gzclose OF((gzFile file)); +/* + Flushes all pending output if necessary, closes the compressed file + and deallocates all the (de)compression state. The return value is the zlib + error number (see function gzerror below). +*/ + +ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum)); +/* + Returns the error message for the last error which occurred on the + given compressed file. errnum is set to zlib error number. If an + error occurred in the file system and not in the compression library, + errnum is set to Z_ERRNO and the application may consult errno + to get the exact error code. +*/ + + /* checksum functions */ + +/* + These functions are not related to compression but are exported + anyway because they might be useful in applications using the + compression library. +*/ + +ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len)); + +/* + Update a running Adler-32 checksum with the bytes buf[0..len-1] and + return the updated checksum. If buf is NULL, this function returns + the required initial value for the checksum. + An Adler-32 checksum is almost as reliable as a CRC32 but can be computed + much faster. Usage example: + + uLong adler = adler32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + adler = adler32(adler, buffer, length); + } + if (adler != original_adler) error(); +*/ + +ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len)); +/* + Update a running crc with the bytes buf[0..len-1] and return the updated + crc. If buf is NULL, this function returns the required initial value + for the crc. Pre- and post-conditioning (one's complement) is performed + within this function so it shouldn't be done by the application. + Usage example: + + uLong crc = crc32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + crc = crc32(crc, buffer, length); + } + if (crc != original_crc) error(); +*/ + + + /* various hacks, don't look :) */ + +/* deflateInit and inflateInit are macros to allow checking the zlib version + * and the compiler's view of z_stream: + */ +ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method, + int windowBits, int memLevel, + int strategy, const char *version, + int stream_size)); +ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits, + const char *version, int stream_size)); +#define deflateInit(strm, level) \ + deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream)) +#define inflateInit(strm) \ + inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream)) +#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ + deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ + (strategy), ZLIB_VERSION, sizeof(z_stream)) +#define inflateInit2(strm, windowBits) \ + inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream)) + + +#if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL) + struct internal_state {int dummy;}; /* hack for buggy compilers */ +#endif + +ZEXTERN const char * ZEXPORT zError OF((int err)); +ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z)); +ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void)); + +#ifdef __cplusplus +} +#endif + +#endif /* _ZLIB_H */