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[grpapi.git] / grpapi / grpapi.cpp
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14362b19 1#include "grpapi.h"\r
ecca31ff 2#include "../LoadStorm/storm.h"\r
14362b19 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
10struct GRPLIBMODULE {\r
11 GRPLIBMODULE();\r
12 ~GRPLIBMODULE();\r
13} GrpLib;\r
14\r
15BOOL APIENTRY DllMain(HINSTANCE hInstDLL, DWORD ul_reason_for_call, LPVOID lpReserved);\r
16\r
17GRPLIBMODULE::GRPLIBMODULE()\r
18{\r
19 GrpMain(0,DLL_PROCESS_ATTACH,0);\r
20}\r
21\r
22GRPLIBMODULE::~GRPLIBMODULE()\r
23{\r
24 GrpMain(0,DLL_PROCESS_DETACH,0);\r
25}\r
26\r
27#endif\r
28\r
29typedef 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
c483a082 37typedef struct {\r
38 WORD *lpRowOffsets;\r
39 WORD *lpRowSizes;\r
40 LPBYTE *lpRowData;\r
41} FRAMEDATA;\r
42\r
ecca31ff 43GETPIXELPROC MyGetPixel = GetPixel;\r
44SETPIXELPROC MySetPixel = (SETPIXELPROC)SetPixelV;\r
45\r
ff024783 46void __inline SetPix(HDC hDC, int X, int Y, COLORREF clrColor, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha);\r
c483a082 47void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHeader, FRAMEHEADER *lpFrameHeader, FRAMEDATA *lpFrameData);\r
0df81049 48BOOL VerifyRow(signed short *lpRawRow, int nWidth, LPBYTE lpEncRow, int nSize);\r
14362b19 49\r
50extern HINSTANCE hStorm;\r
51\r
52BOOL 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
72BOOL GRPAPI WINAPI LoadGrpApi()\r
73{\r
ecca31ff 74 if (!hStorm) return FALSE;\r
14362b19 75 else return TRUE;\r
76}\r
77\r
78void GRPAPI WINAPI FreeGrpApi()\r
79{\r
80}\r
81\r
d8c90836 82/*\r
83HANDLE hProcessHeap = NULL;\r
84\r
85void * 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
92void 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
ecca31ff 99BOOL 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
14362b19 105BOOL GRPAPI WINAPI LoadPalette(LPCSTR lpFileName, DWORD *dwPaletteBuffer)\r
106{\r
ecca31ff 107 if (!lpFileName || !dwPaletteBuffer) return FALSE;\r
14362b19 108 HANDLE hFile;\r
ecca31ff 109 if (SFileOpenFileEx && SFileGetFileSize\r
110 && SFileSetFilePointer && SFileReadFile\r
111 && SFileCloseFile) {\r
112 if (!SFileOpenFileEx(0,lpFileName,1,&hFile)) return FALSE;\r
14362b19 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
161HANDLE GRPAPI WINAPI LoadGrp(LPCSTR lpFileName)\r
162{\r
ecca31ff 163 if (!lpFileName) return (HANDLE)-1;\r
14362b19 164 HANDLE hFile;\r
165 char *GrpFile;\r
ecca31ff 166 if (SFileOpenFileEx && SFileGetFileSize\r
167 && SFileSetFilePointer && SFileReadFile\r
168 && SFileCloseFile) {\r
169 if (!SFileOpenFileEx(0,lpFileName,1,&hFile)) return (HANDLE)-1;\r
14362b19 170 DWORD fsz = SFileGetFileSize(hFile,0);\r
171 if (fsz<6) {\r
172 SFileCloseFile(hFile);\r
173 return (HANDLE)-1;\r
174 }\r
afcd1861 175 GrpFile = (char *)malloc(fsz);\r
ecca31ff 176 if (GrpFile) {\r
14362b19 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
afcd1861 191 GrpFile = (char *)malloc(fsz);\r
ecca31ff 192 if (GrpFile) {\r
14362b19 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
202BOOL GRPAPI WINAPI DestroyGrp(HANDLE hGrp)\r
203{\r
ecca31ff 204 if (!hGrp || hGrp==INVALID_HANDLE_VALUE) return FALSE;\r
afcd1861 205 free(hGrp);\r
14362b19 206 return TRUE;\r
207}\r
208\r
209BOOL GRPAPI WINAPI DrawGrp(HANDLE hGrp, HDC hdcDest, int nXDest, int nYDest, WORD nFrame, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha)\r
210{\r
c483a082 211 if (!hGrp || hGrp==INVALID_HANDLE_VALUE || hdcDest==0 || (!dwPalette && !(dwFlags&USE_INDEX))) return FALSE;\r
14362b19 212 GRPHEADER *GrpFile = (GRPHEADER *)hGrp;\r
213 nFrame %= GrpFile->nFrames;\r
214 FRAMEHEADER *GrpFrame = &((FRAMEHEADER *)(((char *)GrpFile)+6))[nFrame];\r
2975ca34 215 FRAMEHEADER *GrpFrames = &((FRAMEHEADER *)(((char *)GrpFile)+6))[0];\r
216 int FrameSize = 0xFFFFFF;\r
14362b19 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
2975ca34 223 BYTE *GrpRaw = (BYTE *)GrpOffsets;\r
ecca31ff 224 BYTE *RowData;\r
225 WORD x,ofs;\r
226 DWORD y;\r
227 WORD i;\r
2975ca34 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
ecca31ff 245 if (!(dwFlags&HORIZONTAL_FLIP) && !(dwFlags&VERTICAL_FLIP)) {\r
2975ca34 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
ff024783 254 SetPix(hdcDest,nXDest+x,nYDest+y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
2975ca34 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
ff024783 261 SetPix(hdcDest,nXDest+x,nYDest+y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
2975ca34 262 x++;\r
263 }\r
264 ofs+=2;\r
ecca31ff 265 }\r
14362b19 266 }\r
ecca31ff 267 else {\r
2975ca34 268 x+=RowData[ofs]-128;\r
269 ofs++;\r
14362b19 270 }\r
271 }\r
2975ca34 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
ff024783 277 SetPix(hdcDest,nXDest+x,nYDest+y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
ecca31ff 278 }\r
279 }\r
280 }\r
281 }\r
282 else if (dwFlags&HORIZONTAL_FLIP && !(dwFlags&VERTICAL_FLIP)) {\r
2975ca34 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
ff024783 291 SetPix(hdcDest,Right-x,nYDest+y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
2975ca34 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
ff024783 298 SetPix(hdcDest,Right-x,nYDest+y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
2975ca34 299 x++;\r
300 }\r
301 ofs+=2;\r
ecca31ff 302 }\r
ecca31ff 303 }\r
304 else {\r
2975ca34 305 x+=RowData[ofs]-128;\r
306 ofs++;\r
14362b19 307 }\r
308 }\r
2975ca34 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
ff024783 314 SetPix(hdcDest,Right-x,nYDest+y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
14362b19 315 }\r
14362b19 316 }\r
ecca31ff 317 }\r
318 }\r
319 else if (!(dwFlags&HORIZONTAL_FLIP) && dwFlags&VERTICAL_FLIP) {\r
2975ca34 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
ff024783 328 SetPix(hdcDest,nXDest+x,Bottom-y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
2975ca34 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
ff024783 335 SetPix(hdcDest,nXDest+x,Bottom-y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
2975ca34 336 x++;\r
337 }\r
338 ofs+=2;\r
ecca31ff 339 }\r
14362b19 340 }\r
ecca31ff 341 else {\r
2975ca34 342 x+=RowData[ofs]-128;\r
343 ofs++;\r
14362b19 344 }\r
345 }\r
2975ca34 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
ff024783 351 SetPix(hdcDest,nXDest+x,Bottom-y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
ecca31ff 352 }\r
353 }\r
354 }\r
355 }\r
356 else {\r
2975ca34 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
ff024783 365 SetPix(hdcDest,Right-x,Bottom-y,RowData[ofs+i],dwPalette,dwFlags,dwAlpha);\r
2975ca34 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
ff024783 372 SetPix(hdcDest,Right-x,Bottom-y,RowData[ofs+1],dwPalette,dwFlags,dwAlpha);\r
2975ca34 373 x++;\r
374 }\r
375 ofs+=2;\r
ecca31ff 376 }\r
ecca31ff 377 }\r
378 else {\r
2975ca34 379 x+=RowData[ofs]-128;\r
380 ofs++;\r
14362b19 381 }\r
382 }\r
2975ca34 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
ff024783 388 SetPix(hdcDest,Right-x,Bottom-y,GrpRaw[y * GrpFrame->Width + x],dwPalette,dwFlags,dwAlpha);\r
14362b19 389 }\r
14362b19 390 }\r
391 }\r
392 }\r
393 return TRUE;\r
394}\r
395\r
396BOOL GRPAPI WINAPI GetGrpInfo(HANDLE hGrp, GRPHEADER *GrpInfo)\r
397{\r
ecca31ff 398 if (!hGrp || hGrp==INVALID_HANDLE_VALUE || !GrpInfo) return FALSE;\r
14362b19 399 memcpy(GrpInfo,hGrp,6);\r
400 return TRUE;\r
401}\r
402\r
ecca31ff 403void GRPAPI WINAPI SetFunctionGetPixel(GETPIXELPROC lpGetPixelProc)\r
404{\r
afcd1861 405 if (!lpGetPixelProc)\r
406 MyGetPixel = GetPixel;\r
407 else\r
408 MyGetPixel = lpGetPixelProc;\r
ecca31ff 409}\r
410\r
411void GRPAPI WINAPI SetFunctionSetPixel(SETPIXELPROC lpSetPixelProc)\r
412{\r
afcd1861 413 if (!lpSetPixelProc)\r
414 MySetPixel = (SETPIXELPROC)SetPixelV;\r
415 else\r
416 MySetPixel = lpSetPixelProc;\r
ecca31ff 417}\r
418\r
ff024783 419void __inline SetPix(HDC hDC, int X, int Y, COLORREF clrColor, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha)\r
14362b19 420{\r
ff024783 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
14362b19 430\r
ff024783 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
14362b19 441\r
ff024783 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
14362b19 455 }\r
ecca31ff 456 MySetPixel(hDC,X,Y,clrColor);\r
14362b19 457}\r
c483a082 458\r
03269fee 459HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMaxWidth, WORD wMaxHeight, BOOL bNoCompress, DWORD *nGrpSize)\r
c483a082 460{\r
461 GRPHEADER GrpHeader;\r
462 FRAMEHEADER *lpFrameHeaders;\r
463 FRAMEDATA *lpFrameData;\r
464 LPBYTE lpGrpData;\r
0df81049 465 int i, j, x, y, x1, x2, y1, y2;\r
466 DWORD nLastOffset;\r
c483a082 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
0df81049 473 lpFrameHeaders = (FRAMEHEADER *)malloc(nFrames * sizeof(FRAMEHEADER));\r
c483a082 474 lpFrameData = (FRAMEDATA *)malloc(nFrames * sizeof(FRAMEDATA));\r
475\r
0df81049 476 for (i = 0; i < nFrames; i++) {\r
477 // Search for duplicate frames\r
478 for (j = 0; j < i; j++) {\r
479 if (memcmp(&lpImageData[i * wMaxWidth * wMaxHeight],\r
480 &lpImageData[j * wMaxWidth * wMaxHeight],\r
481 wMaxWidth * wMaxHeight * sizeof(short)) == 0)\r
482 break;\r
483 }\r
484\r
485 if (j < i) {\r
486 memcpy(&lpFrameHeaders[i], &lpFrameHeaders[j], sizeof(FRAMEHEADER));\r
ec637542 487 lpFrameData[i].lpRowOffsets = 0;\r
0df81049 488 continue;\r
489 }\r
490\r
c483a082 491 if (i == 0) {\r
492 lpFrameHeaders[i].Offset = sizeof(GRPHEADER) + nFrames * sizeof(FRAMEHEADER);\r
493 }\r
494 else {\r
0df81049 495 lpFrameHeaders[i].Offset = nLastOffset;\r
c483a082 496 }\r
c483a082 497\r
498 // Scan frame to find dimensions of used part\r
499 x1 = y1 = 0x10000;\r
500 x2 = y2 = -1;\r
501 for (y = 0; y < wMaxHeight; y++) {\r
502 for (x = 0; x < wMaxWidth; x++) {\r
503 if (lpImageData[i * wMaxWidth * wMaxHeight + y * wMaxWidth + x] >= 0) {\r
504 if (x < x1) x1 = x;\r
505 if (x > x2) x2 = x;\r
506 if (y < y1) y1 = y;\r
507 if (y > y2) y2 = y;\r
508 }\r
509 }\r
510 }\r
9492b9e6 511 x2 = x2 - x1 + 1;\r
512 y2 = y2 - y1 + 1;\r
513 if ((WORD)x1 > 255) x1 = 255;\r
514 if ((WORD)y1 > 255) y1 = 255;\r
515 if ((WORD)x2 > 255) x2 = 255;\r
516 if ((WORD)y2 > 255) y2 = 255;\r
c483a082 517 lpFrameHeaders[i].Left = x1;\r
518 lpFrameHeaders[i].Top = y1;\r
9492b9e6 519 lpFrameHeaders[i].Width = x2;\r
520 lpFrameHeaders[i].Height = y2;\r
c483a082 521\r
03269fee 522 if (!bNoCompress) {\r
523 EncodeFrameData(lpImageData, i, &GrpHeader, &lpFrameHeaders[i], &lpFrameData[i]);\r
0df81049 524\r
03269fee 525 y = lpFrameHeaders[i].Height;\r
526 if (y > 0) {\r
527 y--;\r
528 nLastOffset = lpFrameHeaders[i].Offset + lpFrameData[i].lpRowOffsets[y] + lpFrameData[i].lpRowSizes[y];\r
529 }\r
530 else {\r
531 nLastOffset = lpFrameHeaders[i].Offset;\r
532 }\r
0df81049 533 }\r
534 else {\r
03269fee 535 nLastOffset = lpFrameHeaders[i].Offset + lpFrameHeaders[i].Width * lpFrameHeaders[i].Height;\r
0df81049 536 }\r
c483a082 537 }\r
538\r
0df81049 539 lpGrpData = (LPBYTE)malloc(nLastOffset);\r
c483a082 540\r
541 // Write completed GRP to buffer\r
542 memcpy(lpGrpData, &GrpHeader, sizeof(GRPHEADER));\r
543 memcpy(lpGrpData + sizeof(GRPHEADER), lpFrameHeaders, nFrames * sizeof(FRAMEHEADER));\r
544\r
545 for (i = 0; i < nFrames; i++) {\r
ec637542 546 if (lpFrameData[i].lpRowOffsets) {\r
03269fee 547 if (!bNoCompress) {\r
548 memcpy(lpGrpData + lpFrameHeaders[i].Offset, lpFrameData[i].lpRowOffsets, lpFrameHeaders[i].Height * sizeof(WORD));\r
c483a082 549\r
03269fee 550 for (y = 0; y < lpFrameHeaders[i].Height; y++) {\r
551 if (lpFrameData[i].lpRowData[y]) {\r
552 memcpy(lpGrpData + lpFrameHeaders[i].Offset + lpFrameData[i].lpRowOffsets[y], lpFrameData[i].lpRowData[y], lpFrameData[i].lpRowSizes[y]);\r
553 free(lpFrameData[i].lpRowData[y]);\r
554 }\r
ec637542 555 }\r
0df81049 556\r
03269fee 557 free(lpFrameData[i].lpRowOffsets);\r
558 free(lpFrameData[i].lpRowSizes);\r
559 free(lpFrameData[i].lpRowData);\r
560 }\r
561 else {\r
562 for (y = 0; y < lpFrameHeaders[i].Height; y++) {\r
563 for (x = 0; x < lpFrameHeaders[i].Width; x++) {\r
564 lpGrpData[lpFrameHeaders[i].Offset + y * lpFrameHeaders[i].Width + x] =\r
f7234247 565 (BYTE)lpImageData[i * wMaxWidth * wMaxHeight + (lpFrameHeaders[i].Top + y) * wMaxWidth + lpFrameHeaders[i].Left + x];\r
03269fee 566 }\r
567 }\r
568 }\r
0df81049 569 }\r
c483a082 570 }\r
571\r
c483a082 572 free(lpFrameHeaders);\r
573 free(lpFrameData);\r
574\r
0df81049 575 *nGrpSize = nLastOffset;\r
c483a082 576 return (HANDLE)lpGrpData;\r
577}\r
578\r
579void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHeader, FRAMEHEADER *lpFrameHeader, FRAMEDATA *lpFrameData)\r
580{\r
f7234247 581 int x, y, i, nBufPos, nRepeat;\r
c483a082 582 LPBYTE lpRowBuf;\r
ec637542 583 WORD nLastOffset;\r
c483a082 584\r
585 lpFrameData->lpRowOffsets = (WORD *)malloc(lpFrameHeader->Height * sizeof(WORD));\r
586 lpFrameData->lpRowSizes = (WORD *)malloc(lpFrameHeader->Height * sizeof(WORD));\r
587 lpFrameData->lpRowData = (LPBYTE *)malloc(lpFrameHeader->Height * sizeof(LPBYTE));\r
588 lpRowBuf = (LPBYTE)malloc(lpFrameHeader->Width * 2);\r
d8c90836 589 nLastOffset = lpFrameHeader->Height * sizeof(WORD);\r
c483a082 590\r
591 for (y = 0; y < lpFrameHeader->Height; y++) {\r
592 i = nFrame * lpGrpHeader->wMaxWidth * lpGrpHeader->wMaxHeight + (lpFrameHeader->Top + y) * lpGrpHeader->wMaxWidth;\r
ec637542 593\r
594 /* Fails verification when using this. Bug in encoder or decoder? Doesn't provide much benefit.\r
03269fee 595 // Search for duplicate rows (experimental)\r
ec637542 596 for (x = 0; x < y; x++) {\r
597 j = nFrame * lpGrpHeader->wMaxWidth * lpGrpHeader->wMaxHeight + (lpFrameHeader->Top + x) * lpGrpHeader->wMaxWidth;\r
598 if (memcmp(&lpImageData[i+lpFrameHeader->Left],\r
599 &lpImageData[j+lpFrameHeader->Left],\r
600 lpGrpHeader->wMaxWidth * sizeof(short)) == 0)\r
601 break;\r
602 }\r
603\r
604 if (x < y) {\r
605 lpFrameData->lpRowOffsets[y] = lpFrameData->lpRowOffsets[x];\r
606 lpFrameData->lpRowSizes[y] = 0;\r
607 lpFrameData->lpRowData[y] = 0;\r
608\r
609#ifdef _DEBUG\r
610 if (!VerifyRow(&lpImageData[i+lpFrameHeader->Left], lpFrameHeader->Width, lpFrameData->lpRowData[x], lpFrameData->lpRowSizes[x])) {\r
611 nBufPos = nBufPos;\r
612 }\r
613#endif\r
614\r
615 continue;\r
616 }\r
617 */\r
618\r
c483a082 619 nBufPos = 0;\r
0df81049 620 if (lpFrameHeader->Width > 0) {\r
621 for (x = lpFrameHeader->Left; x < lpFrameHeader->Left + lpFrameHeader->Width; x++) {\r
622 if (x < lpFrameHeader->Left + lpFrameHeader->Width - 1) {\r
623 if (lpImageData[i+x] < 0) {\r
624 lpRowBuf[nBufPos] = 0x80;\r
625 for (; lpImageData[i+x] < 0 && x < lpFrameHeader->Left + lpFrameHeader->Width && lpRowBuf[nBufPos] < 0xFF; x++) {\r
626 lpRowBuf[nBufPos]++;\r
627 }\r
628 x--;\r
d8c90836 629 if (nLastOffset + nBufPos + 1 <= 0xFFFF)\r
630 nBufPos++;\r
0df81049 631 continue;\r
c483a082 632 }\r
0df81049 633\r
634 // Count repeating pixels, nRepeat = number of pixels - 1, ignore if there are less than 4 duplicates\r
58a8b78c 635 for (nRepeat = 0; lpImageData[i+x+nRepeat] == lpImageData[i+x+nRepeat+1] && x+nRepeat < lpFrameHeader->Left + lpFrameHeader->Width - 1 && nRepeat < 0x3E; nRepeat++) {}\r
0df81049 636\r
637 if (nRepeat > 2) {\r
638 lpRowBuf[nBufPos] = 0x41 + nRepeat;\r
639 lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];\r
640 x += nRepeat;\r
d8c90836 641 if (nLastOffset + nBufPos + 2 <= 0xFFFF)\r
642 nBufPos += 2;\r
0df81049 643 }\r
644 else {\r
645 lpRowBuf[nBufPos] = 0;\r
646 for (; lpImageData[i+x] >= 0 && x < lpFrameHeader->Left + lpFrameHeader->Width && lpRowBuf[nBufPos] < 0x3F; x++) {\r
647 // Count repeating pixels, ignore if there are less than 4 duplicates\r
648 for (nRepeat = 0; lpImageData[i+x+nRepeat] == lpImageData[i+x+nRepeat+1] && x+nRepeat < lpFrameHeader->Left + lpFrameHeader->Width - 1 && nRepeat < 3; nRepeat++) {}\r
649 if (nRepeat > 2) break;\r
650\r
651 lpRowBuf[nBufPos]++;\r
652 lpRowBuf[nBufPos+lpRowBuf[nBufPos]] = (BYTE)lpImageData[i+x];\r
653 }\r
654 if (lpImageData[i+x] >= 0 && x == lpFrameHeader->Left + lpFrameHeader->Width - 1 && lpRowBuf[nBufPos] < 0x3F) {\r
655 lpRowBuf[nBufPos]++;\r
656 lpRowBuf[nBufPos+lpRowBuf[nBufPos]] = (BYTE)lpImageData[i+x];\r
657 }\r
658 x--;\r
d8c90836 659 if (nLastOffset + nBufPos + 1 + lpRowBuf[nBufPos] <= 0xFFFF)\r
660 nBufPos += 1 + lpRowBuf[nBufPos];\r
c483a082 661 }\r
c483a082 662 }\r
663 else {\r
0df81049 664 if (lpImageData[i+x] < 0) {\r
665 lpRowBuf[nBufPos] = 0x81;\r
d8c90836 666 if (nLastOffset + nBufPos + 1 <= 0xFFFF)\r
667 nBufPos++;\r
0df81049 668 }\r
669 else {\r
670 lpRowBuf[nBufPos] = 1;\r
671 lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];\r
d8c90836 672 if (nLastOffset + nBufPos + 2 <= 0xFFFF)\r
673 nBufPos += 2;\r
c483a082 674 }\r
c483a082 675 }\r
676 }\r
677 }\r
0df81049 678\r
679#ifdef _DEBUG\r
680 if (!VerifyRow(&lpImageData[i+lpFrameHeader->Left], lpFrameHeader->Width, lpRowBuf, nBufPos)) {\r
681 nBufPos = nBufPos;\r
c483a082 682 }\r
0df81049 683#endif\r
c483a082 684\r
685 if (y == 0) {\r
686 lpFrameData->lpRowOffsets[y] = lpFrameHeader->Height * sizeof(WORD);\r
687 }\r
688 else {\r
ec637542 689 lpFrameData->lpRowOffsets[y] = nLastOffset;\r
c483a082 690 }\r
691\r
ec637542 692 nLastOffset = lpFrameData->lpRowOffsets[y] + nBufPos;\r
693\r
c483a082 694 lpFrameData->lpRowSizes[y] = nBufPos;\r
695 lpFrameData->lpRowData[y] = (LPBYTE)malloc(nBufPos);\r
696 memcpy(lpFrameData->lpRowData[y], lpRowBuf, nBufPos);\r
697 }\r
698\r
699 free(lpRowBuf);\r
700}\r
0df81049 701\r
702#ifdef _DEBUG\r
703BOOL VerifyRow(signed short *lpRawRow, int nWidth, LPBYTE lpEncRow, int nSize)\r
704{\r
705 int i,x=0,ofs=0;\r
706 while (x < nWidth && ofs < nSize) {\r
707 if (!(lpEncRow[ofs] & 0x80)) {\r
708 if (!(lpEncRow[ofs] & 0x40)) {\r
709 for (i=1;i<=lpEncRow[ofs] && x<nWidth;i++) {\r
710 if (lpEncRow[ofs+i] != (BYTE)lpRawRow[x]) return FALSE;\r
711 x++;\r
712 }\r
713 ofs+=lpEncRow[ofs]+1;\r
714 }\r
715 else {\r
716 for (i=0;i<lpEncRow[ofs]-64 && x<nWidth;i++) {\r
717 if (lpEncRow[ofs+1] != (BYTE)lpRawRow[x]) return FALSE;\r
718 x++;\r
719 }\r
720 ofs+=2;\r
721 }\r
722 }\r
723 else {\r
724 for (i=0;i<lpEncRow[ofs]-128 && x<nWidth;i++) {\r
725 if (lpRawRow[x] >= 0) return FALSE;\r
726 }\r
727 x+=lpEncRow[ofs]-128;\r
728 ofs++;\r
729 }\r
730 }\r
731\r
732 if (x != nWidth || ofs != nSize) return FALSE;\r
733\r
734 return TRUE;\r
735}\r
736#endif\r
GRP encoding/decoding library