grpapi/grpapi.cpp

   1 #include "grpapi.h"\r
   2 #include "../LoadStorm/storm.h"\r
   3 #include <malloc.h>\r
   4 \r
   5 #ifdef GRPAPI_STATIC\r
   6 #define DllMain GrpMain\r
   7 \r
   8 #include "grp_static.h"\r
   9 \r
  10 struct GRPLIBMODULE {\r
  11         GRPLIBMODULE();\r
  12         ~GRPLIBMODULE();\r
  13 } GrpLib;\r
  14 \r
  15 BOOL APIENTRY DllMain(HINSTANCE hInstDLL, DWORD  ul_reason_for_call, LPVOID lpReserved);\r
  16 \r
  17 GRPLIBMODULE::GRPLIBMODULE()\r
  18 {\r
  19         GrpMain(0,DLL_PROCESS_ATTACH,0);\r
  20 }\r
  21 \r
  22 GRPLIBMODULE::~GRPLIBMODULE()\r
  23 {\r
  24         GrpMain(0,DLL_PROCESS_DETACH,0);\r
  25 }\r
  26 \r
  27 #endif\r
  28 \r
  29 typedef struct {\r
  30         BYTE Left;\r
  31         BYTE Top;\r
  32         BYTE Width;\r
  33         BYTE Height;\r
  34         DWORD Offset;\r
  35 } FRAMEHEADER;\r
  36 \r
  37 typedef struct {\r
  38         WORD *lpRowOffsets;\r
  39         WORD *lpRowSizes;\r
  40         LPBYTE *lpRowData;\r
  41 } FRAMEDATA;\r
  42 \r
  43 GETPIXELPROC MyGetPixel = GetPixel;\r
  44 SETPIXELPROC MySetPixel = (SETPIXELPROC)SetPixelV;\r
  45 \r
  46 void __inline SetPix(HDC hDC, int X, int Y, COLORREF clrColor, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha);\r
  47 void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHeader, FRAMEHEADER *lpFrameHeader, FRAMEDATA *lpFrameData);\r
  48 BOOL VerifyRow(signed short *lpRawRow, int nWidth, LPBYTE lpEncRow, int nSize);\r
  49 \r
  50 extern HINSTANCE hStorm;\r
  51 \r
  52 BOOL APIENTRY DllMain( HINSTANCE hInstDLL, \r
  53                        DWORD  ul_reason_for_call, \r
  54                        LPVOID lpReserved\r
  55                                          )\r
  56 {\r
  57     switch (ul_reason_for_call)\r
  58         {\r
  59                 case DLL_PROCESS_ATTACH:\r
  60                         break;\r
  61                 case DLL_THREAD_ATTACH:\r
  62                         break;\r
  63                 case DLL_THREAD_DETACH:\r
  64                         break;\r
  65                 case DLL_PROCESS_DETACH:\r
  66                         break;\r
  67     }\r
  68 \r
  69     return TRUE;\r
  70 }\r
  71 \r
  72 BOOL GRPAPI WINAPI LoadGrpApi()\r
  73 {\r
  74         if (!hStorm) return FALSE;\r
  75         else return TRUE;\r
  76 }\r
  77 \r
  78 void GRPAPI WINAPI FreeGrpApi()\r
  79 {\r
  80 }\r
  81 \r
  82 /*\r
  83 HANDLE hProcessHeap = NULL;\r
  84 \r
  85 void * SFAlloc(size_t nSize)\r
  86 {\r
  87         if (!hProcessHeap) hProcessHeap = GetProcessHeap();\r
  88         if (hProcessHeap) return HeapAlloc(hProcessHeap, 0, nSize);\r
  89         else return NULL;\r
  90 }\r
  91 \r
  92 void SFFree(void *lpMem)\r
  93 {\r
  94         if (!hProcessHeap) hProcessHeap = GetProcessHeap();\r
  95         if (hProcessHeap) HeapFree(hProcessHeap, 0, lpMem);\r
  96 }\r
  97 */\r
  98 \r
  99 BOOL GRPAPI WINAPI SetMpqDll(LPCSTR lpDllFileName)\r
 100 {\r
 101         if (LoadStorm((char *)lpDllFileName)) return TRUE;\r
 102         else return FALSE;\r
 103 }\r
 104 \r
 105 BOOL GRPAPI WINAPI LoadPalette(LPCSTR lpFileName, DWORD *dwPaletteBuffer)\r
 106 {\r
 107         if (!lpFileName || !dwPaletteBuffer) return FALSE;\r
 108         HANDLE hFile;\r
 109         if (SFileOpenFileEx && SFileGetFileSize\r
 110          && SFileSetFilePointer && SFileReadFile\r
 111          && SFileCloseFile) {\r
 112                 if (!SFileOpenFileEx(0,lpFileName,1,&hFile)) return FALSE;\r
 113                 DWORD fsz = SFileGetFileSize(hFile,0);\r
 114                 SFileSetFilePointer(hFile,0,0,FILE_BEGIN);\r
 115                 if (fsz>=1024) {\r
 116                         memset(dwPaletteBuffer,0,1024);\r
 117                         SFileReadFile(hFile,dwPaletteBuffer,1024,0,0);\r
 118                 }\r
 119                 else if (fsz==768) {\r
 120                         char *buffer = (char *)_alloca(768);\r
 121                         memset(buffer,0,768);\r
 122                         SFileReadFile(hFile,buffer,768,0,0);\r
 123                         for (DWORD i=0;i<256;i++) {\r
 124                                 memcpy(&dwPaletteBuffer[i],buffer+i*3,3);\r
 125                                 *(((char *)&dwPaletteBuffer[i])+3) = 0;\r
 126                         }\r
 127                 }\r
 128                 else {\r
 129                         memset(dwPaletteBuffer,0,1024);\r
 130                         SFileReadFile(hFile,dwPaletteBuffer,fsz,0,0);\r
 131                 }\r
 132                 SFileCloseFile(hFile);\r
 133         }\r
 134         else {\r
 135                 hFile = CreateFile(lpFileName,GENERIC_READ,FILE_SHARE_READ,0,OPEN_EXISTING,0,0);\r
 136                 if (hFile==INVALID_HANDLE_VALUE) return FALSE;\r
 137                 DWORD fsz = GetFileSize(hFile,0),tsz;\r
 138                 SetFilePointer(hFile,0,0,FILE_BEGIN);\r
 139                 if (fsz>=1024) {\r
 140                         memset(dwPaletteBuffer,0,1024);\r
 141                         ReadFile(hFile,dwPaletteBuffer,1024,&tsz,0);\r
 142                 }\r
 143                 else if (fsz==768) {\r
 144                         char *buffer = (char *)_alloca(768);\r
 145                         memset(buffer,0,768);\r
 146                         ReadFile(hFile,buffer,768,&tsz,0);\r
 147                         for (DWORD i=0;i<256;i++) {\r
 148                                 memcpy(&dwPaletteBuffer[i],buffer+i*3,3);\r
 149                                 *(((char *)&dwPaletteBuffer[i])+3) = 0;\r
 150                         }\r
 151                 }\r
 152                 else {\r
 153                         memset(dwPaletteBuffer,0,1024);\r
 154                         ReadFile(hFile,dwPaletteBuffer,fsz,&tsz,0);\r
 155                 }\r
 156                 CloseHandle(hFile);\r
 157         }\r
 158         return TRUE;\r
 159 }\r
 160 \r
 161 HANDLE GRPAPI WINAPI LoadGrp(LPCSTR lpFileName)\r
 162 {\r
 163         if (!lpFileName) return (HANDLE)-1;\r
 164         HANDLE hFile;\r
 165         char *GrpFile;\r
 166         if (SFileOpenFileEx && SFileGetFileSize\r
 167          && SFileSetFilePointer && SFileReadFile\r
 168          && SFileCloseFile) {\r
 169                 if (!SFileOpenFileEx(0,lpFileName,1,&hFile)) return (HANDLE)-1;\r
 170                 DWORD fsz = SFileGetFileSize(hFile,0);\r
 171                 if (fsz<6) {\r
 172                         SFileCloseFile(hFile);\r
 173                         return (HANDLE)-1;\r
 174                 }\r
 175                 GrpFile = (char *)malloc(fsz);\r
 176                 if (GrpFile) {\r
 177                         SFileSetFilePointer(hFile,0,0,FILE_BEGIN);\r
 178                         SFileReadFile(hFile,GrpFile,fsz,0,0);\r
 179                 }\r
 180                 else GrpFile=(char *)-1;\r
 181                 SFileCloseFile(hFile);\r
 182         }\r
 183         else {\r
 184                 hFile = CreateFile(lpFileName,GENERIC_READ,FILE_SHARE_READ,0,OPEN_EXISTING,0,0);\r
 185                 if (hFile==INVALID_HANDLE_VALUE) return (HANDLE)-1;\r
 186                 DWORD fsz = GetFileSize(hFile,0),tsz;\r
 187                 if (fsz<6) {\r
 188                         CloseHandle(hFile);\r
 189                         return (HANDLE)-1;\r
 190                 }\r
 191                 GrpFile = (char *)malloc(fsz);\r
 192                 if (GrpFile) {\r
 193                         SetFilePointer(hFile,0,0,FILE_BEGIN);\r
 194                         ReadFile(hFile,GrpFile,fsz,&tsz,0);\r
 195                 }\r
 196                 else GrpFile=(char *)-1;\r
 197                 CloseHandle(hFile);\r
 198         }\r
 199         return (HANDLE)GrpFile;\r
 200 }\r
 201 \r
 202 BOOL GRPAPI WINAPI DestroyGrp(HANDLE hGrp)\r
 203 {\r
 204         if (!hGrp || hGrp==INVALID_HANDLE_VALUE) return FALSE;\r
 205         free(hGrp);\r
 206         return TRUE;\r
 207 }\r
 208 \r
 209 BOOL GRPAPI WINAPI DrawGrp(HANDLE hGrp, HDC hdcDest, int nXDest, int nYDest, WORD nFrame, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha)\r
 210 {\r
 211         if (!hGrp || hGrp==INVALID_HANDLE_VALUE || hdcDest==0 || (!dwPalette && !(dwFlags&USE_INDEX))) return FALSE;\r
 212         GRPHEADER *GrpFile = (GRPHEADER *)hGrp;\r
 213         nFrame %= GrpFile->nFrames;\r
 214         FRAMEHEADER *GrpFrame = &((FRAMEHEADER *)(((char *)GrpFile)+6))[nFrame];\r
 215         FRAMEHEADER *GrpFrames = &((FRAMEHEADER *)(((char *)GrpFile)+6))[0];\r
 216         int FrameSize = 0xFFFFFF;\r
 217         DWORD Right,Bottom;\r
 218         if (dwFlags&HORIZONTAL_FLIP) Right = nXDest+GrpFile->wMaxWidth-1-GrpFrame->Left;\r
 219         if (dwFlags&VERTICAL_FLIP) Bottom = nYDest+GrpFile->wMaxHeight-1-GrpFrame->Top;\r
 220         nXDest += GrpFrame->Left;\r
 221         nYDest += GrpFrame->Top;\r
 222         WORD *GrpOffsets = ((WORD *)(((char *)GrpFile)+GrpFrame->Offset));\r
 223         BYTE *GrpRaw = (BYTE *)GrpOffsets;\r
 224         BYTE *RowData;\r
 225         WORD x,ofs;\r
 226         DWORD y;\r
 227         WORD i;\r
 228         int j;\r
 229         if (nFrame + 1 < GrpFile->nFrames) {\r
 230                 for (i = 0; i + 1 < GrpFile->nFrames; i++) {\r
 231                         j = GrpFrames[i].Offset - GrpFrame->Offset;\r
 232                         if (j > 0 && j < FrameSize)\r
 233                                 FrameSize = j;\r
 234                 }\r
 235         }\r
 236         if (FrameSize == 0xFFFFFF) {\r
 237                 for (i = 0; i + 1 < GrpFile->nFrames; i++) {\r
 238                         j = GrpFrames[i].Offset - GrpFrames[0].Offset;\r
 239                         if (j > 0 && j < FrameSize)\r
 240                                 FrameSize = j;\r
 241                 }\r
 242                 if (FrameSize == GrpFrames[0].Width * GrpFrames[0].Height)\r
 243                         FrameSize = GrpFrame->Width * GrpFrame->Height;\r
 244         }\r
 245         if (!(dwFlags&HORIZONTAL_FLIP) && !(dwFlags&VERTICAL_FLIP)) {\r
 246                 if (FrameSize != GrpFrame->Width * GrpFrame->Height) {\r
 247                         for (y=0;y<GrpFrame->Height;y++) {\r
 248                                 RowData = ((BYTE *)(((char *)GrpOffsets)+GrpOffsets[y]));\r
 249                                 x=0; ofs=0;\r
 250                                 while (x<GrpFrame->Width) {\r
 251                                         if (!(RowData[ofs] & 0x80)) {\r
 252                                                 if (!(RowData[ofs] & 0x40)) {\r
 253                                                         for (i=1;i<=RowData[ofs] && x<GrpFrame->Width;i++) {\r
 254                                                                 SetPix(hdcDest,nXDest+x,nYDest+y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
 255                                                                 x++;\r
 256                                                         }\r
 257                                                         ofs+=RowData[ofs]+1;\r
 258                                                 }\r
 259                                                 else {\r
 260                                                         for (i=0;i<RowData[ofs]-64 && x<GrpFrame->Width;i++) {\r
 261                                                                 SetPix(hdcDest,nXDest+x,nYDest+y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
 262                                                                 x++;\r
 263                                                         }\r
 264                                                         ofs+=2;\r
 265                                                 }\r
 266                                         }\r
 267                                         else {\r
 268                                                 x+=RowData[ofs]-128;\r
 269                                                 ofs++;\r
 270                                         }\r
 271                                 }\r
 272                         }\r
 273                 }\r
 274                 else {\r
 275                         for (y=0;y<GrpFrame->Height;y++) {\r
 276                                 for (x=0;x<GrpFrame->Width;x++) {\r
 277                                         SetPix(hdcDest,nXDest+x,nYDest+y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
 278                                 }\r
 279                         }\r
 280                 }\r
 281         }\r
 282         else if (dwFlags&HORIZONTAL_FLIP && !(dwFlags&VERTICAL_FLIP)) {\r
 283                 if (FrameSize != GrpFrame->Width * GrpFrame->Height) {\r
 284                         for (y=0;y<GrpFrame->Height;y++) {\r
 285                                 RowData = ((BYTE *)(((char *)GrpOffsets)+GrpOffsets[y]));\r
 286                                 x=0; ofs=0;\r
 287                                 while (x<GrpFrame->Width) {\r
 288                                         if (!(RowData[ofs] & 0x80)) {\r
 289                                                 if (!(RowData[ofs] & 0x40)) {\r
 290                                                         for (i=1;i<=RowData[ofs] && x<GrpFrame->Width;i++) {\r
 291                                                                 SetPix(hdcDest,Right-x,nYDest+y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
 292                                                                 x++;\r
 293                                                         }\r
 294                                                         ofs+=RowData[ofs]+1;\r
 295                                                 }\r
 296                                                 else {\r
 297                                                         for (i=0;i<RowData[ofs]-64 && x<GrpFrame->Width;i++) {\r
 298                                                                 SetPix(hdcDest,Right-x,nYDest+y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
 299                                                                 x++;\r
 300                                                         }\r
 301                                                         ofs+=2;\r
 302                                                 }\r
 303                                         }\r
 304                                         else {\r
 305                                                 x+=RowData[ofs]-128;\r
 306                                                 ofs++;\r
 307                                         }\r
 308                                 }\r
 309                         }\r
 310                 }\r
 311                 else {\r
 312                         for (y=0;y<GrpFrame->Height;y++) {\r
 313                                 for (x=0;x<GrpFrame->Width;x++) {\r
 314                                         SetPix(hdcDest,Right-x,nYDest+y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
 315                                 }\r
 316                         }\r
 317                 }\r
 318         }\r
 319         else if (!(dwFlags&HORIZONTAL_FLIP) && dwFlags&VERTICAL_FLIP) {\r
 320                 if (FrameSize != GrpFrame->Width * GrpFrame->Height) {\r
 321                         for (y=0;y<GrpFrame->Height;y++) {\r
 322                                 RowData = ((BYTE *)(((char *)GrpOffsets)+GrpOffsets[y]));\r
 323                                 x=0; ofs=0;\r
 324                                 while (x<GrpFrame->Width) {\r
 325                                         if (!(RowData[ofs] & 0x80)) {\r
 326                                                 if (!(RowData[ofs] & 0x40)) {\r
 327                                                         for (i=1;i<=RowData[ofs] && x<GrpFrame->Width;i++) {\r
 328                                                                 SetPix(hdcDest,nXDest+x,Bottom-y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
 329                                                                 x++;\r
 330                                                         }\r
 331                                                         ofs+=RowData[ofs]+1;\r
 332                                                 }\r
 333                                                 else {\r
 334                                                         for (i=0;i<RowData[ofs]-64 && x<GrpFrame->Width;i++) {\r
 335                                                                 SetPix(hdcDest,nXDest+x,Bottom-y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
 336                                                                 x++;\r
 337                                                         }\r
 338                                                         ofs+=2;\r
 339                                                 }\r
 340                                         }\r
 341                                         else {\r
 342                                                 x+=RowData[ofs]-128;\r
 343                                                 ofs++;\r
 344                                         }\r
 345                                 }\r
 346                         }\r
 347                 }\r
 348                 else {\r
 349                         for (y=0;y<GrpFrame->Height;y++) {\r
 350                                 for (x=0;x<GrpFrame->Width;x++) {\r
 351                                         SetPix(hdcDest,nXDest+x,Bottom-y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
 352                                 }\r
 353                         }\r
 354                 }\r
 355         }\r
 356         else {\r
 357                 if (FrameSize != GrpFrame->Width * GrpFrame->Height) {\r
 358                         for (y=0;y<GrpFrame->Height;y++) {\r
 359                                 RowData = ((BYTE *)(((char *)GrpOffsets)+GrpOffsets[y]));\r
 360                                 x=0; ofs=0;\r
 361                                 while (x<GrpFrame->Width) {\r
 362                                         if (!(RowData[ofs] & 0x80)) {\r
 363                                                 if (!(RowData[ofs] & 0x40)) {\r
 364                                                         for (i=1;i<=RowData[ofs] && x<GrpFrame->Width;i++) {\r
 365                                                                 SetPix(hdcDest,Right-x,Bottom-y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
 366                                                                 x++;\r
 367                                                         }\r
 368                                                         ofs+=RowData[ofs]+1;\r
 369                                                 }\r
 370                                                 else {\r
 371                                                         for (i=0;i<RowData[ofs]-64 && x<GrpFrame->Width;i++) {\r
 372                                                                 SetPix(hdcDest,Right-x,Bottom-y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
 373                                                                 x++;\r
 374                                                         }\r
 375                                                         ofs+=2;\r
 376                                                 }\r
 377                                         }\r
 378                                         else {\r
 379                                                 x+=RowData[ofs]-128;\r
 380                                                 ofs++;\r
 381                                         }\r
 382                                 }\r
 383                         }\r
 384                 }\r
 385                 else {\r
 386                         for (y=0;y<GrpFrame->Height;y++) {\r
 387                                 for (x=0;x<GrpFrame->Width;x++) {\r
 388                                         SetPix(hdcDest,Right-x,Bottom-y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
 389                                 }\r
 390                         }\r
 391                 }\r
 392         }\r
 393         return TRUE;\r
 394 }\r
 395 \r
 396 BOOL GRPAPI WINAPI GetGrpInfo(HANDLE hGrp, GRPHEADER *GrpInfo)\r
 397 {\r
 398         if (!hGrp || hGrp==INVALID_HANDLE_VALUE || !GrpInfo) return FALSE;\r
 399         memcpy(GrpInfo,hGrp,6);\r
 400         return TRUE;\r
 401 }\r
 402 \r
 403 void GRPAPI WINAPI SetFunctionGetPixel(GETPIXELPROC lpGetPixelProc)\r
 404 {\r
 405         if (!lpGetPixelProc)\r
 406                 MyGetPixel = GetPixel;\r
 407         else\r
 408                 MyGetPixel = lpGetPixelProc;\r
 409 }\r
 410 \r
 411 void GRPAPI WINAPI SetFunctionSetPixel(SETPIXELPROC lpSetPixelProc)\r
 412 {\r
 413         if (!lpSetPixelProc)\r
 414                 MySetPixel = (SETPIXELPROC)SetPixelV;\r
 415         else\r
 416                 MySetPixel = lpSetPixelProc;\r
 417 }\r
 418 \r
 419 void __inline SetPix(HDC hDC, int X, int Y, COLORREF clrColor, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha)\r
 420 {\r
 421         if (!(dwFlags&USE_INDEX)) {\r
 422                 if (dwFlags&SHADOW_COLOR) {\r
 423                         clrColor = (dwFlags >> 8) & 0x00FFFFFF;\r
 424                 }\r
 425                 else {\r
 426                         clrColor = dwPalette[clrColor];\r
 427                 }\r
 428                 if (dwFlags&ALPHA_BLEND) {\r
 429                         DWORD dwColor = MyGetPixel(hDC,X,Y);\r
 430 \r
 431                         // Old alpha\r
 432                         /*((BYTE *)&dwColor)[0]*=1-((float)((BYTE *)&dwAlpha)[0]/256);\r
 433                         ((BYTE *)&dwColor)[1]*=1-((float)((BYTE *)&dwAlpha)[1]/256);\r
 434                         ((BYTE *)&dwColor)[2]*=1-((float)((BYTE *)&dwAlpha)[2]/256);\r
 435                         ((BYTE *)&clrColor)[0]*=(float)((BYTE *)&dwAlpha)[0]/256;\r
 436                         ((BYTE *)&clrColor)[1]*=(float)((BYTE *)&dwAlpha)[1]/256;\r
 437                         ((BYTE *)&clrColor)[2]*=(float)((BYTE *)&dwAlpha)[2]/256;\r
 438                         ((BYTE *)&clrColor)[0]+=((BYTE *)&dwColor)[0];\r
 439                         ((BYTE *)&clrColor)[1]+=((BYTE *)&dwColor)[1];\r
 440                         ((BYTE *)&clrColor)[2]+=((BYTE *)&dwColor)[2];*/\r
 441 \r
 442                         /* blendedcolor =\r
 443                                  ( ( forecolor * ( 1 - alpha ) ) >> 8 )\r
 444                            + ( ( backcolor * ( 256 - alpha ) ) >> 8 ) */\r
 445                         ((BYTE *)&clrColor)[0] =\r
 446                                 ( ( ((BYTE *)&clrColor)[0] * ( ((BYTE *)&dwAlpha)[0] + 1 ) ) >> 8 )\r
 447                                 + ( ( ((BYTE *)&dwColor)[0] * ( 256 - ((BYTE *)&dwAlpha)[0] ) ) >> 8 );\r
 448                         ((BYTE *)&clrColor)[1] =\r
 449                                 ( ( ((BYTE *)&clrColor)[1] * ( ((BYTE *)&dwAlpha)[1] + 1 ) ) >> 8 )\r
 450                                 + ( ( ((BYTE *)&dwColor)[1] * ( 256 - ((BYTE *)&dwAlpha)[1] ) ) >> 8 );\r
 451                         ((BYTE *)&clrColor)[2] =\r
 452                                 ( ( ((BYTE *)&clrColor)[2] * ( ((BYTE *)&dwAlpha)[2] + 1 ) ) >> 8 )\r
 453                                 + ( ( ((BYTE *)&dwColor)[2] * ( 256 - ((BYTE *)&dwAlpha)[2] ) ) >> 8 );\r
 454                 }\r
 455         }\r
 456         MySetPixel(hDC,X,Y,clrColor);\r
 457 }\r
 458 \r
 459 HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMaxWidth, WORD wMaxHeight, BOOL bNoCompress, DWORD *nGrpSize)\r
 460 {\r
 461         GRPHEADER GrpHeader;\r
 462         FRAMEHEADER *lpFrameHeaders;\r
 463         FRAMEDATA *lpFrameData;\r
 464         LPBYTE lpGrpData;\r
 465         int i, j, x, y, x1, x2, y1, y2;\r
 466         DWORD nLastOffset;\r
 467 \r
 468         if (!lpImageData || !nGrpSize) return (HANDLE)-1;\r
 469 \r
 470         GrpHeader.nFrames = nFrames;\r
 471         GrpHeader.wMaxWidth = wMaxWidth;\r
 472         GrpHeader.wMaxHeight = wMaxHeight;\r
 473         lpFrameHeaders = (FRAMEHEADER *)malloc(nFrames * sizeof(FRAMEHEADER));\r
 474         lpFrameData = (FRAMEDATA *)malloc(nFrames * sizeof(FRAMEDATA));\r
 475         nLastOffset = sizeof(GRPHEADER) + nFrames * sizeof(FRAMEHEADER);\r
 476 \r
 477         for (i = 0; i < nFrames; i++) {\r
 478                 // Search for duplicate frames\r
 479                 for (j = 0; j < i; j++) {\r
 480                         if (memcmp(&lpImageData[i * wMaxWidth * wMaxHeight],\r
 481                                    &lpImageData[j * wMaxWidth * wMaxHeight],\r
 482                                            wMaxWidth * wMaxHeight * sizeof(short)) == 0)\r
 483                                 break;\r
 484                 }\r
 485 \r
 486                 if (j < i) {\r
 487                         memcpy(&lpFrameHeaders[i], &lpFrameHeaders[j], sizeof(FRAMEHEADER));\r
 488                         lpFrameData[i].lpRowOffsets = 0;\r
 489                         continue;\r
 490                 }\r
 491 \r
 492                 if (i == 0) {\r
 493                         lpFrameHeaders[i].Offset = sizeof(GRPHEADER) + nFrames * sizeof(FRAMEHEADER);\r
 494                 }\r
 495                 else {\r
 496                         lpFrameHeaders[i].Offset = nLastOffset;\r
 497                 }\r
 498 \r
 499                 // Scan frame to find dimensions of used part\r
 500                 x1 = y1 = 0x10000;\r
 501                 x2 = y2 = -1;\r
 502                 for (y = 0; y < wMaxHeight; y++) {\r
 503                         for (x = 0; x < wMaxWidth; x++) {\r
 504                                 if (lpImageData[i * wMaxWidth * wMaxHeight + y * wMaxWidth + x] >= 0) {\r
 505                                         if (x < x1) x1 = x;\r
 506                                         if (x > x2) x2 = x;\r
 507                                         if (y < y1) y1 = y;\r
 508                                         if (y > y2) y2 = y;\r
 509                                 }\r
 510                         }\r
 511                 }\r
 512                 x2 = x2 - x1 + 1;\r
 513                 y2 = y2 - y1 + 1;\r
 514                 if ((WORD)x1 > 255) x1 = 255;\r
 515                 if ((WORD)y1 > 255) y1 = 255;\r
 516                 if ((WORD)x2 > 255) x2 = 255;\r
 517                 if ((WORD)y2 > 255) y2 = 255;\r
 518                 lpFrameHeaders[i].Left = x1;\r
 519                 lpFrameHeaders[i].Top = y1;\r
 520                 lpFrameHeaders[i].Width = x2;\r
 521                 lpFrameHeaders[i].Height = y2;\r
 522 \r
 523                 if (!bNoCompress) {\r
 524                         EncodeFrameData(lpImageData, i, &GrpHeader, &lpFrameHeaders[i], &lpFrameData[i]);\r
 525 \r
 526                         y = lpFrameHeaders[i].Height;\r
 527                         if (y > 0) {\r
 528                                 y--;\r
 529                                 nLastOffset = lpFrameHeaders[i].Offset + lpFrameData[i].lpRowOffsets[y] + lpFrameData[i].lpRowSizes[y];\r
 530                         }\r
 531                         else {\r
 532                                 nLastOffset = lpFrameHeaders[i].Offset;\r
 533                         }\r
 534                 }\r
 535                 else {\r
 536                         nLastOffset = lpFrameHeaders[i].Offset + lpFrameHeaders[i].Width * lpFrameHeaders[i].Height;\r
 537                 }\r
 538         }\r
 539 \r
 540         lpGrpData = (LPBYTE)malloc(nLastOffset);\r
 541 \r
 542         // Write completed GRP to buffer\r
 543         memcpy(lpGrpData, &GrpHeader, sizeof(GRPHEADER));\r
 544         memcpy(lpGrpData + sizeof(GRPHEADER), lpFrameHeaders, nFrames * sizeof(FRAMEHEADER));\r
 545 \r
 546         for (i = 0; i < nFrames; i++) {\r
 547                 if (lpFrameData[i].lpRowOffsets) {\r
 548                         if (!bNoCompress) {\r
 549                                 memcpy(lpGrpData + lpFrameHeaders[i].Offset, lpFrameData[i].lpRowOffsets, lpFrameHeaders[i].Height * sizeof(WORD));\r
 550 \r
 551                                 for (y = 0; y < lpFrameHeaders[i].Height; y++) {\r
 552                                         if (lpFrameData[i].lpRowData[y]) {\r
 553                                                 memcpy(lpGrpData + lpFrameHeaders[i].Offset + lpFrameData[i].lpRowOffsets[y], lpFrameData[i].lpRowData[y], lpFrameData[i].lpRowSizes[y]);\r
 554                                                 free(lpFrameData[i].lpRowData[y]);\r
 555                                         }\r
 556                                 }\r
 557 \r
 558                                 free(lpFrameData[i].lpRowOffsets);\r
 559                                 free(lpFrameData[i].lpRowSizes);\r
 560                                 free(lpFrameData[i].lpRowData);\r
 561                         }\r
 562                         else {\r
 563                                 for (y = 0; y < lpFrameHeaders[i].Height; y++) {\r
 564                                         for (x = 0; x < lpFrameHeaders[i].Width; x++) {\r
 565                                                 lpGrpData[lpFrameHeaders[i].Offset + y * lpFrameHeaders[i].Width + x] =\r
 566                                                         (BYTE)lpImageData[i * wMaxWidth * wMaxHeight + (lpFrameHeaders[i].Top + y) * wMaxWidth + lpFrameHeaders[i].Left + x];\r
 567                                         }\r
 568                                 }\r
 569                         }\r
 570                 }\r
 571         }\r
 572 \r
 573         free(lpFrameHeaders);\r
 574         free(lpFrameData);\r
 575 \r
 576         *nGrpSize = nLastOffset;\r
 577         return (HANDLE)lpGrpData;\r
 578 }\r
 579 \r
 580 void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHeader, FRAMEHEADER *lpFrameHeader, FRAMEDATA *lpFrameData)\r
 581 {\r
 582         int x, y, i, nBufPos, nRepeat;\r
 583         LPBYTE lpRowBuf;\r
 584         WORD nLastOffset;\r
 585 \r
 586         lpFrameData->lpRowOffsets = (WORD *)malloc(lpFrameHeader->Height * sizeof(WORD));\r
 587         lpFrameData->lpRowSizes = (WORD *)malloc(lpFrameHeader->Height * sizeof(WORD));\r
 588         lpFrameData->lpRowData = (LPBYTE *)malloc(lpFrameHeader->Height * sizeof(LPBYTE));\r
 589         lpRowBuf = (LPBYTE)malloc(lpFrameHeader->Width * 2);\r
 590         nLastOffset = lpFrameHeader->Height * sizeof(WORD);\r
 591 \r
 592         for (y = 0; y < lpFrameHeader->Height; y++) {\r
 593                 i = nFrame * lpGrpHeader->wMaxWidth * lpGrpHeader->wMaxHeight + (lpFrameHeader->Top + y) * lpGrpHeader->wMaxWidth;\r
 594 \r
 595                 /* Fails verification when using this.  Bug in encoder or decoder?  Doesn't provide much benefit.\r
 596                 // Search for duplicate rows (experimental)\r
 597                 for (x = 0; x < y; x++) {\r
 598                         j = nFrame * lpGrpHeader->wMaxWidth * lpGrpHeader->wMaxHeight + (lpFrameHeader->Top + x) * lpGrpHeader->wMaxWidth;\r
 599                         if (memcmp(&lpImageData[i+lpFrameHeader->Left],\r
 600                                    &lpImageData[j+lpFrameHeader->Left],\r
 601                                    lpGrpHeader->wMaxWidth * sizeof(short)) == 0)\r
 602                                 break;\r
 603                 }\r
 604 \r
 605                 if (x < y) {\r
 606                         lpFrameData->lpRowOffsets[y] = lpFrameData->lpRowOffsets[x];\r
 607                         lpFrameData->lpRowSizes[y] = 0;\r
 608                         lpFrameData->lpRowData[y] = 0;\r
 609 \r
 610 #ifdef _DEBUG\r
 611                         if (!VerifyRow(&lpImageData[i+lpFrameHeader->Left], lpFrameHeader->Width, lpFrameData->lpRowData[x], lpFrameData->lpRowSizes[x])) {\r
 612                                 nBufPos = nBufPos;\r
 613                         }\r
 614 #endif\r
 615 \r
 616                         continue;\r
 617                 }\r
 618                 */\r
 619 \r
 620                 nBufPos = 0;\r
 621                 if (lpFrameHeader->Width > 0) {\r
 622                         for (x = lpFrameHeader->Left; x < lpFrameHeader->Left + lpFrameHeader->Width; x++) {\r
 623                                 if (x < lpFrameHeader->Left + lpFrameHeader->Width - 1) {\r
 624                                         if (lpImageData[i+x] < 0) {\r
 625                                                 lpRowBuf[nBufPos] = 0x80;\r
 626                                                 for (; lpImageData[i+x] < 0 && x < lpFrameHeader->Left + lpFrameHeader->Width && lpRowBuf[nBufPos] < 0xFF; x++) {\r
 627                                                         lpRowBuf[nBufPos]++;\r
 628                                                 }\r
 629                                                 x--;\r
 630                                                 if (nLastOffset + nBufPos + 1 <= 0xFFFF)\r
 631                                                         nBufPos++;\r
 632                                                 continue;\r
 633                                         }\r
 634 \r
 635                                         // Count repeating pixels, nRepeat = number of pixels - 1, ignore if there are less than 4 duplicates\r
 636                                         for (nRepeat = 0; lpImageData[i+x+nRepeat] == lpImageData[i+x+nRepeat+1] && x+nRepeat < lpFrameHeader->Left + lpFrameHeader->Width - 1 && nRepeat < 0x3E; nRepeat++) {}\r
 637 \r
 638                                         if (nRepeat > 2) {\r
 639                                                 lpRowBuf[nBufPos] = 0x41 + nRepeat;\r
 640                                                 lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];\r
 641                                                 x += nRepeat;\r
 642                                                 if (nLastOffset + nBufPos + 2 <= 0xFFFF)\r
 643                                                         nBufPos += 2;\r
 644                                         }\r
 645                                         else {\r
 646                                                 lpRowBuf[nBufPos] = 0;\r
 647                                                 for (; lpImageData[i+x] >= 0 && x < lpFrameHeader->Left + lpFrameHeader->Width && lpRowBuf[nBufPos] < 0x3F; x++) {\r
 648                                                         // Count repeating pixels, ignore if there are less than 4 duplicates\r
 649                                                         for (nRepeat = 0; lpImageData[i+x+nRepeat] == lpImageData[i+x+nRepeat+1] && x+nRepeat < lpFrameHeader->Left + lpFrameHeader->Width - 1 && nRepeat < 3; nRepeat++) {}\r
 650                                                         if (nRepeat > 2) break;\r
 651 \r
 652                                                         lpRowBuf[nBufPos]++;\r
 653                                                         lpRowBuf[nBufPos+lpRowBuf[nBufPos]] = (BYTE)lpImageData[i+x];\r
 654                                                 }\r
 655                                                 if (lpImageData[i+x] >= 0 && x == lpFrameHeader->Left + lpFrameHeader->Width - 1 && lpRowBuf[nBufPos] < 0x3F) {\r
 656                                                         lpRowBuf[nBufPos]++;\r
 657                                                         lpRowBuf[nBufPos+lpRowBuf[nBufPos]] = (BYTE)lpImageData[i+x];\r
 658                                                 }\r
 659                                                 x--;\r
 660                                                 if (nLastOffset + nBufPos + 1 + lpRowBuf[nBufPos] <= 0xFFFF)\r
 661                                                         nBufPos += 1 + lpRowBuf[nBufPos];\r
 662                                         }\r
 663                                 }\r
 664                                 else {\r
 665                                         if (lpImageData[i+x] < 0) {\r
 666                                                 lpRowBuf[nBufPos] = 0x81;\r
 667                                                 if (nLastOffset + nBufPos + 1 <= 0xFFFF)\r
 668                                                         nBufPos++;\r
 669                                         }\r
 670                                         else {\r
 671                                                 lpRowBuf[nBufPos] = 1;\r
 672                                                 lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];\r
 673                                                 if (nLastOffset + nBufPos + 2 <= 0xFFFF)\r
 674                                                         nBufPos += 2;\r
 675                                         }\r
 676                                 }\r
 677                         }\r
 678                 }\r
 679 \r
 680 #ifdef _DEBUG\r
 681                 if (!VerifyRow(&lpImageData[i+lpFrameHeader->Left], lpFrameHeader->Width, lpRowBuf, nBufPos)) {\r
 682                         nBufPos = nBufPos;\r
 683                 }\r
 684 #endif\r
 685 \r
 686                 if (y == 0) {\r
 687                         lpFrameData->lpRowOffsets[y] = lpFrameHeader->Height * sizeof(WORD);\r
 688                 }\r
 689                 else {\r
 690                         lpFrameData->lpRowOffsets[y] = nLastOffset;\r
 691                 }\r
 692 \r
 693                 nLastOffset = lpFrameData->lpRowOffsets[y] + nBufPos;\r
 694 \r
 695                 lpFrameData->lpRowSizes[y] = nBufPos;\r
 696                 lpFrameData->lpRowData[y] = (LPBYTE)malloc(nBufPos);\r
 697                 memcpy(lpFrameData->lpRowData[y], lpRowBuf, nBufPos);\r
 698         }\r
 699 \r
 700         free(lpRowBuf);\r
 701 }\r
 702 \r
 703 #ifdef _DEBUG\r
 704 BOOL VerifyRow(signed short *lpRawRow, int nWidth, LPBYTE lpEncRow, int nSize)\r
 705 {\r
 706         int i,x=0,ofs=0;\r
 707         while (x < nWidth && ofs < nSize) {\r
 708                 if (!(lpEncRow[ofs] & 0x80)) {\r
 709                         if (!(lpEncRow[ofs] & 0x40)) {\r
 710                                 for (i=1;i<=lpEncRow[ofs] && x<nWidth;i++) {\r
 711                                         if (lpEncRow[ofs+i] != (BYTE)lpRawRow[x]) return FALSE;\r
 712                                         x++;\r
 713                                 }\r
 714                                 ofs+=lpEncRow[ofs]+1;\r
 715                         }\r
 716                         else {\r
 717                                 for (i=0;i<lpEncRow[ofs]-64 && x<nWidth;i++) {\r
 718                                         if (lpEncRow[ofs+1] != (BYTE)lpRawRow[x]) return FALSE;\r
 719                                         x++;\r
 720                                 }\r
 721                                 ofs+=2;\r
 722                         }\r
 723                 }\r
 724                 else {\r
 725                         for (i=0;i<lpEncRow[ofs]-128 && x<nWidth;i++) {\r
 726                                 if (lpRawRow[x] >= 0) return FALSE;\r
 727                         }\r
 728                         x+=lpEncRow[ofs]-128;\r
 729                         ofs++;\r
 730                 }\r
 731         }\r
 732 \r
 733         if (x != nWidth || ofs != nSize) return FALSE;\r
 734 \r
 735         return TRUE;\r
 736 }\r
 737 #endif\r