granicus.if.org Git - imagemagick/blob - coders/wpg.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                            W   W  PPPP    GGGG                              %
   6 %                            W   W  P   P  G                                  %
   7 %                            W W W  PPPP   G GGG                              %
   8 %                            WW WW  P      G   G                              %
   9 %                            W   W  P       GGG                               %
  10 %                                                                             %
  11 %                                                                             %
  12 %                       Read WordPerfect Image Format                         %
  13 %                                                                             %
  14 %                              Software Design                                %
  15 %                              Jaroslav Fojtik                                %
  16 %                                 June 2000                                   %
  17 %                                                                             %
  18 %                                                                             %
  19 %  Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization      %
  20 %  dedicated to making software imaging solutions freely available.           %
  21 %                                                                             %
  22 %  You may not use this file except in compliance with the License.  You may  %
  23 %  obtain a copy of the License at                                            %
  24 %                                                                             %
  25 %    http://www.imagemagick.org/script/license.php                            %
  26 %                                                                             %
  27 %  Unless required by applicable law or agreed to in writing, software        %
  28 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  29 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  30 %  See the License for the specific language governing permissions and        %
  31 %  limitations under the License.                                             %
  32 %                                                                             %
  33 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  34 %
  35 %
  36 */
  37 \f
  38 /*
  39   Include declarations.
  40 */
  41 #include "MagickCore/studio.h"
  42 #include "MagickCore/blob.h"
  43 #include "MagickCore/blob-private.h"
  44 #include "MagickCore/color-private.h"
  45 #include "MagickCore/colormap.h"
  46 #include "MagickCore/colormap-private.h"
  47 #include "MagickCore/constitute.h"
  48 #include "MagickCore/exception.h"
  49 #include "MagickCore/exception-private.h"
  50 #include "MagickCore/cache.h"
  51 #include "MagickCore/distort.h"
  52 #include "MagickCore/image.h"
  53 #include "MagickCore/image-private.h"
  54 #include "MagickCore/list.h"
  55 #include "MagickCore/magic.h"
  56 #include "MagickCore/magick.h"
  57 #include "MagickCore/memory_.h"
  58 #include "MagickCore/resource_.h"
  59 #include "MagickCore/pixel-accessor.h"
  60 #include "MagickCore/quantum-private.h"
  61 #include "MagickCore/static.h"
  62 #include "MagickCore/string_.h"
  63 #include "MagickCore/module.h"
  64 #include "MagickCore/transform.h"
  65 #include "MagickCore/utility.h"
  66 #include "MagickCore/utility-private.h"
  67 \f
  68 typedef struct
  69    {
  70    unsigned char Red;
  71    unsigned char Blue;
  72    unsigned char Green;
  73    } RGB_Record;
  74
  75 /* Default palette for WPG level 1 */
  76 static const RGB_Record WPG1_Palette[256]={
  77 {  0,  0,  0},    {  0,  0,168},
  78 {  0,168,  0},    {  0,168,168},
  79 {168,  0,  0},    {168,  0,168},
  80 {168, 84,  0},    {168,168,168},
  81 { 84, 84, 84},    { 84, 84,252},
  82 { 84,252, 84},    { 84,252,252},
  83 {252, 84, 84},    {252, 84,252},
  84 {252,252, 84},    {252,252,252},  /*16*/
  85 {  0,  0,  0},    { 20, 20, 20},
  86 { 32, 32, 32},    { 44, 44, 44},
  87 { 56, 56, 56},    { 68, 68, 68},
  88 { 80, 80, 80},    { 96, 96, 96},
  89 {112,112,112},    {128,128,128},
  90 {144,144,144},    {160,160,160},
  91 {180,180,180},    {200,200,200},
  92 {224,224,224},    {252,252,252},  /*32*/
  93 {  0,  0,252},    { 64,  0,252},
  94 {124,  0,252},    {188,  0,252},
  95 {252,  0,252},    {252,  0,188},
  96 {252,  0,124},    {252,  0, 64},
  97 {252,  0,  0},    {252, 64,  0},
  98 {252,124,  0},    {252,188,  0},
  99 {252,252,  0},    {188,252,  0},
 100 {124,252,  0},    { 64,252,  0},  /*48*/
 101 {  0,252,  0},    {  0,252, 64},
 102 {  0,252,124},    {  0,252,188},
 103 {  0,252,252},    {  0,188,252},
 104 {  0,124,252},    {  0, 64,252},
 105 {124,124,252},    {156,124,252},
 106 {188,124,252},    {220,124,252},
 107 {252,124,252},    {252,124,220},
 108 {252,124,188},    {252,124,156},  /*64*/
 109 {252,124,124},    {252,156,124},
 110 {252,188,124},    {252,220,124},
 111 {252,252,124},    {220,252,124},
 112 {188,252,124},    {156,252,124},
 113 {124,252,124},    {124,252,156},
 114 {124,252,188},    {124,252,220},
 115 {124,252,252},    {124,220,252},
 116 {124,188,252},    {124,156,252},  /*80*/
 117 {180,180,252},    {196,180,252},
 118 {216,180,252},    {232,180,252},
 119 {252,180,252},    {252,180,232},
 120 {252,180,216},    {252,180,196},
 121 {252,180,180},    {252,196,180},
 122 {252,216,180},    {252,232,180},
 123 {252,252,180},    {232,252,180},
 124 {216,252,180},    {196,252,180},  /*96*/
 125 {180,220,180},    {180,252,196},
 126 {180,252,216},    {180,252,232},
 127 {180,252,252},    {180,232,252},
 128 {180,216,252},    {180,196,252},
 129 {0,0,112},    {28,0,112},
 130 {56,0,112},    {84,0,112},
 131 {112,0,112},    {112,0,84},
 132 {112,0,56},    {112,0,28},  /*112*/
 133 {112,0,0},    {112,28,0},
 134 {112,56,0},    {112,84,0},
 135 {112,112,0},    {84,112,0},
 136 {56,112,0},    {28,112,0},
 137 {0,112,0},    {0,112,28},
 138 {0,112,56},    {0,112,84},
 139 {0,112,112},    {0,84,112},
 140 {0,56,112},    {0,28,112},   /*128*/
 141 {56,56,112},    {68,56,112},
 142 {84,56,112},    {96,56,112},
 143 {112,56,112},    {112,56,96},
 144 {112,56,84},    {112,56,68},
 145 {112,56,56},    {112,68,56},
 146 {112,84,56},    {112,96,56},
 147 {112,112,56},    {96,112,56},
 148 {84,112,56},    {68,112,56},  /*144*/
 149 {56,112,56},    {56,112,69},
 150 {56,112,84},    {56,112,96},
 151 {56,112,112},    {56,96,112},
 152 {56,84,112},    {56,68,112},
 153 {80,80,112},    {88,80,112},
 154 {96,80,112},    {104,80,112},
 155 {112,80,112},    {112,80,104},
 156 {112,80,96},    {112,80,88},  /*160*/
 157 {112,80,80},    {112,88,80},
 158 {112,96,80},    {112,104,80},
 159 {112,112,80},    {104,112,80},
 160 {96,112,80},    {88,112,80},
 161 {80,112,80},    {80,112,88},
 162 {80,112,96},    {80,112,104},
 163 {80,112,112},    {80,114,112},
 164 {80,96,112},    {80,88,112},  /*176*/
 165 {0,0,64},    {16,0,64},
 166 {32,0,64},    {48,0,64},
 167 {64,0,64},    {64,0,48},
 168 {64,0,32},    {64,0,16},
 169 {64,0,0},    {64,16,0},
 170 {64,32,0},    {64,48,0},
 171 {64,64,0},    {48,64,0},
 172 {32,64,0},    {16,64,0},  /*192*/
 173 {0,64,0},    {0,64,16},
 174 {0,64,32},    {0,64,48},
 175 {0,64,64},    {0,48,64},
 176 {0,32,64},    {0,16,64},
 177 {32,32,64},    {40,32,64},
 178 {48,32,64},    {56,32,64},
 179 {64,32,64},    {64,32,56},
 180 {64,32,48},    {64,32,40},  /*208*/
 181 {64,32,32},    {64,40,32},
 182 {64,48,32},    {64,56,32},
 183 {64,64,32},    {56,64,32},
 184 {48,64,32},    {40,64,32},
 185 {32,64,32},    {32,64,40},
 186 {32,64,48},    {32,64,56},
 187 {32,64,64},    {32,56,64},
 188 {32,48,64},    {32,40,64},  /*224*/
 189 {44,44,64},    {48,44,64},
 190 {52,44,64},    {60,44,64},
 191 {64,44,64},    {64,44,60},
 192 {64,44,52},    {64,44,48},
 193 {64,44,44},    {64,48,44},
 194 {64,52,44},    {64,60,44},
 195 {64,64,44},    {60,64,44},
 196 {52,64,44},    {48,64,44},  /*240*/
 197 {44,64,44},    {44,64,48},
 198 {44,64,52},    {44,64,60},
 199 {44,64,64},    {44,60,64},
 200 {44,55,64},    {44,48,64},
 201 {0,0,0},    {0,0,0},
 202 {0,0,0},    {0,0,0},
 203 {0,0,0},    {0,0,0},
 204 {0,0,0},    {0,0,0}    /*256*/
 205 };
 206 \f
 207 /*
 208 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 209 %                                                                             %
 210 %                                                                             %
 211 %                                                                             %
 212 %   I s W P G                                                                 %
 213 %                                                                             %
 214 %                                                                             %
 215 %                                                                             %
 216 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 217 %
 218 %  IsWPG() returns True if the image format type, identified by the magick
 219 %  string, is WPG.
 220 %
 221 %  The format of the IsWPG method is:
 222 %
 223 %      unsigned int IsWPG(const unsigned char *magick,const size_t length)
 224 %
 225 %  A description of each parameter follows:
 226 %
 227 %    o status:  Method IsWPG returns True if the image format type is WPG.
 228 %
 229 %    o magick: compare image format pattern against these bytes.
 230 %
 231 %    o length: Specifies the length of the magick string.
 232 %
 233 */
 234 static unsigned int IsWPG(const unsigned char *magick,const size_t length)
 235 {
 236   if (length < 4)
 237     return(MagickFalse);
 238   if (memcmp(magick,"\377WPC",4) == 0)
 239     return(MagickTrue);
 240   return(MagickFalse);
 241 }
 242 \f
 243
 244 static void Rd_WP_DWORD(Image *image,size_t *d)
 245 {
 246   unsigned char
 247     b;
 248
 249   b=ReadBlobByte(image);
 250   *d=b;
 251   if (b < 0xFFU)
 252     return;
 253   b=ReadBlobByte(image);
 254   *d=(size_t) b;
 255   b=ReadBlobByte(image);
 256   *d+=(size_t) b*256l;
 257   if (*d < 0x8000)
 258     return;
 259   *d=(*d & 0x7FFF) << 16;
 260   b=ReadBlobByte(image);
 261   *d+=(size_t) b;
 262   b=ReadBlobByte(image);
 263   *d+=(size_t) b*256l;
 264   return;
 265 }
 266
 267 static void InsertRow(Image *image,unsigned char *p,ssize_t y,int bpp,
 268   ExceptionInfo *exception)
 269 {
 270   int
 271     bit;
 272
 273   Quantum
 274     index;
 275
 276   register Quantum
 277     *q;
 278
 279   ssize_t
 280     x;
 281
 282   switch (bpp)
 283     {
 284     case 1:  /* Convert bitmap scanline. */
 285       {
 286         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 287         if (q == (Quantum *) NULL)
 288           break;
 289         for (x=0; x < ((ssize_t) image->columns-7); x+=8)
 290         {
 291           for (bit=0; bit < 8; bit++)
 292           {
 293             index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
 294             SetPixelIndex(image,index,q);
 295             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 296             q+=GetPixelChannels(image);
 297           }
 298           p++;
 299         }
 300         if ((image->columns % 8) != 0)
 301           {
 302             for (bit=0; bit < (ssize_t) (image->columns % 8); bit++)
 303             {
 304               index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
 305               SetPixelIndex(image,index,q);
 306               SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 307               q+=GetPixelChannels(image);
 308             }
 309             p++;
 310           }
 311         if (!SyncAuthenticPixels(image,exception))
 312           break;
 313         break;
 314       }
 315     case 2:  /* Convert PseudoColor scanline. */
 316       {
 317         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 318         if (q == (Quantum *) NULL)
 319           break;
 320         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 321         {
 322             index=ConstrainColormapIndex(image,(*p >> 6) & 0x3,exception);
 323             SetPixelIndex(image,index,q);
 324             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 325             q+=GetPixelChannels(image);
 326             index=ConstrainColormapIndex(image,(*p >> 4) & 0x3,exception);
 327             SetPixelIndex(image,index,q);
 328             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 329             q+=GetPixelChannels(image);
 330             index=ConstrainColormapIndex(image,(*p >> 2) & 0x3,exception);
 331             SetPixelIndex(image,index,q);
 332             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 333             q+=GetPixelChannels(image);
 334             index=ConstrainColormapIndex(image,(*p) & 0x3,exception);
 335             SetPixelIndex(image,index,q);
 336             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 337             p++;
 338             q+=GetPixelChannels(image);
 339         }
 340        if ((image->columns % 4) != 0)
 341           {
 342             index=ConstrainColormapIndex(image,(*p >> 6) & 0x3,exception);
 343             SetPixelIndex(image,index,q);
 344             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 345             q+=GetPixelChannels(image);
 346             if ((image->columns % 4) >= 1)
 347
 348               {
 349                 index=ConstrainColormapIndex(image,(*p >> 4) & 0x3,exception);
 350                 SetPixelIndex(image,index,q);
 351                 SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 352                 q+=GetPixelChannels(image);
 353                 if ((image->columns % 4) >= 2)
 354
 355                   {
 356                     index=ConstrainColormapIndex(image,(*p >> 2) & 0x3,
 357                       exception);
 358                     SetPixelIndex(image,index,q);
 359                     SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 360                     q+=GetPixelChannels(image);
 361                   }
 362               }
 363             p++;
 364           }
 365         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 366           break;
 367         break;
 368       }
 369
 370     case 4:  /* Convert PseudoColor scanline. */
 371       {
 372         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 373         if (q == (Quantum *) NULL)
 374           break;
 375         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 376           {
 377             index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f,exception);
 378             SetPixelIndex(image,index,q);
 379             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 380             q+=GetPixelChannels(image);
 381             index=ConstrainColormapIndex(image,(*p) & 0x0f,exception);
 382             SetPixelIndex(image,index,q);
 383             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 384             p++;
 385             q+=GetPixelChannels(image);
 386           }
 387         if ((image->columns % 2) != 0)
 388           {
 389             index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f,exception);
 390             SetPixelIndex(image,index,q);
 391             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 392             p++;
 393             q+=GetPixelChannels(image);
 394           }
 395         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 396           break;
 397         break;
 398       }
 399     case 8: /* Convert PseudoColor scanline. */
 400       {
 401         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 402         if (q == (Quantum *) NULL) break;
 403
 404         for (x=0; x < (ssize_t) image->columns; x++)
 405           {
 406             index=ConstrainColormapIndex(image,*p,exception);
 407             SetPixelIndex(image,index,q);
 408             SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 409             p++;
 410             q+=GetPixelChannels(image);
 411           }
 412         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 413           break;
 414       }
 415       break;
 416
 417     case 24:     /*  Convert DirectColor scanline.  */
 418       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 419       if (q == (Quantum *) NULL)
 420         break;
 421       for (x=0; x < (ssize_t) image->columns; x++)
 422         {
 423           SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 424           SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 425           SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 426           q+=GetPixelChannels(image);
 427         }
 428       if (!SyncAuthenticPixels(image,exception))
 429         break;
 430       break;
 431     }
 432 }
 433
 434
 435 /* Helper for WPG1 raster reader. */
 436 #define InsertByte(b) \
 437 { \
 438   BImgBuff[x]=b; \
 439   x++; \
 440   if((ssize_t) x>=ldblk) \
 441   { \
 442     InsertRow(image,BImgBuff,(ssize_t) y,bpp,exception); \
 443     x=0; \
 444     y++; \
 445     } \
 446 }
 447 /* WPG1 raster reader. */
 448 static int UnpackWPGRaster(Image *image,int bpp,ExceptionInfo *exception)
 449 {
 450   int
 451     x,
 452     y,
 453     i;
 454
 455   unsigned char
 456     bbuf,
 457     *BImgBuff,
 458     RunCount;
 459
 460   ssize_t
 461     ldblk;
 462
 463   x=0;
 464   y=0;
 465
 466   ldblk=(ssize_t) ((bpp*image->columns+7)/8);
 467   BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t) ldblk,
 468     sizeof(*BImgBuff));
 469   if(BImgBuff==NULL) return(-2);
 470
 471   while(y<(ssize_t) image->rows)
 472     {
 473       bbuf=ReadBlobByte(image);
 474
 475       RunCount=bbuf & 0x7F;
 476       if(bbuf & 0x80)
 477         {
 478           if(RunCount)  /* repeat next byte runcount * */
 479             {
 480               bbuf=ReadBlobByte(image);
 481               for(i=0;i<(int) RunCount;i++) InsertByte(bbuf);
 482             }
 483           else {  /* read next byte as RunCount; repeat 0xFF runcount* */
 484             RunCount=ReadBlobByte(image);
 485             for(i=0;i<(int) RunCount;i++) InsertByte(0xFF);
 486           }
 487         }
 488       else {
 489         if(RunCount)   /* next runcount byte are readed directly */
 490           {
 491             for(i=0;i < (int) RunCount;i++)
 492               {
 493                 bbuf=ReadBlobByte(image);
 494                 InsertByte(bbuf);
 495               }
 496           }
 497         else {  /* repeat previous line runcount* */
 498           RunCount=ReadBlobByte(image);
 499           if(x) {    /* attempt to duplicate row from x position: */
 500             /* I do not know what to do here */
 501             BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 502             return(-3);
 503           }
 504           for(i=0;i < (int) RunCount;i++)
 505             {
 506               x=0;
 507               y++;    /* Here I need to duplicate previous row RUNCOUNT* */
 508               if(y<2) continue;
 509               if(y>(ssize_t) image->rows)
 510                 {
 511                   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 512                   return(-4);
 513                 }
 514               InsertRow(image,BImgBuff,y-1,bpp,exception);
 515             }
 516         }
 517       }
 518     }
 519   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 520   return(0);
 521 }
 522
 523
 524 /* Helper for WPG2 reader. */
 525 #define InsertByte6(b) \
 526 { \
 527 DisableMSCWarning(4310) \
 528   if(XorMe)\
 529     BImgBuff[x] = (unsigned char)~b;\
 530   else\
 531     BImgBuff[x] = b;\
 532 RestoreMSCWarning \
 533   x++; \
 534   if((ssize_t) x >= ldblk) \
 535   { \
 536     InsertRow(image,BImgBuff,(ssize_t) y,bpp,exception); \
 537     x=0; \
 538     y++; \
 539    } \
 540 }
 541 /* WPG2 raster reader. */
 542 static int UnpackWPG2Raster(Image *image,int bpp,ExceptionInfo *exception)
 543 {
 544   int
 545     RunCount,
 546     XorMe = 0;
 547
 548   size_t
 549     x,
 550     y;
 551
 552   ssize_t
 553     i,
 554     ldblk;
 555
 556   unsigned int
 557     SampleSize=1;
 558
 559   unsigned char
 560     bbuf,
 561     *BImgBuff,
 562     SampleBuffer[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
 563
 564   x=0;
 565   y=0;
 566   ldblk=(ssize_t) ((bpp*image->columns+7)/8);
 567   BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t) ldblk,
 568     sizeof(*BImgBuff));
 569   if(BImgBuff==NULL)
 570     return(-2);
 571
 572   while( y< image->rows)
 573     {
 574       bbuf=ReadBlobByte(image);
 575
 576       switch(bbuf)
 577         {
 578         case 0x7D:
 579           SampleSize=ReadBlobByte(image);  /* DSZ */
 580           if(SampleSize>8)
 581             return(-2);
 582           if(SampleSize<1)
 583             return(-2);
 584           break;
 585         case 0x7E:
 586           (void) FormatLocaleFile(stderr,
 587             "\nUnsupported WPG token XOR, please report!");
 588           XorMe=!XorMe;
 589           break;
 590         case 0x7F:
 591           RunCount=ReadBlobByte(image);   /* BLK */
 592           for(i=0; i < SampleSize*(RunCount+1); i++)
 593             {
 594               InsertByte6(0);
 595             }
 596           break;
 597         case 0xFD:
 598           RunCount=ReadBlobByte(image);   /* EXT */
 599           for(i=0; i<= RunCount;i++)
 600             for(bbuf=0; bbuf < SampleSize; bbuf++)
 601               InsertByte6(SampleBuffer[bbuf]);
 602           break;
 603         case 0xFE:
 604           RunCount=ReadBlobByte(image);  /* RST */
 605           if(x!=0)
 606             {
 607               (void) FormatLocaleFile(stderr,
 608                 "\nUnsupported WPG2 unaligned token RST x=%.20g, please report!\n"
 609                 ,(double) x);
 610               return(-3);
 611             }
 612           {
 613             /* duplicate the previous row RunCount x */
 614             for(i=0;i<=RunCount;i++)
 615               {
 616                 InsertRow(image,BImgBuff,(ssize_t) (image->rows >= y ? y : image->rows-1),
 617                           bpp,exception);
 618                 y++;
 619               }
 620           }
 621           break;
 622         case 0xFF:
 623           RunCount=ReadBlobByte(image);   /* WHT */
 624           for(i=0; i < SampleSize*(RunCount+1); i++)
 625             {
 626               InsertByte6(0xFF);
 627             }
 628           break;
 629         default:
 630           RunCount=bbuf & 0x7F;
 631
 632           if(bbuf & 0x80)     /* REP */
 633             {
 634               for(i=0; i < SampleSize; i++)
 635                 SampleBuffer[i]=ReadBlobByte(image);
 636               for(i=0;i<=RunCount;i++)
 637                 for(bbuf=0;bbuf<SampleSize;bbuf++)
 638                   InsertByte6(SampleBuffer[bbuf]);
 639             }
 640           else {      /* NRP */
 641             for(i=0; i< SampleSize*(RunCount+1);i++)
 642               {
 643                 bbuf=ReadBlobByte(image);
 644                 InsertByte6(bbuf);
 645               }
 646           }
 647         }
 648     }
 649   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 650   return(0);
 651 }
 652
 653
 654 typedef float tCTM[3][3];
 655
 656 static unsigned LoadWPG2Flags(Image *image,char Precision,float *Angle,tCTM *CTM)
 657 {
 658 const unsigned char TPR=1,TRN=2,SKW=4,SCL=8,ROT=0x10,OID=0x20,LCK=0x80;
 659 ssize_t x;
 660 unsigned DenX;
 661 unsigned Flags;
 662
 663  (void) memset(*CTM,0,sizeof(*CTM));     /*CTM.erase();CTM.resize(3,3);*/
 664  (*CTM)[0][0]=1;
 665  (*CTM)[1][1]=1;
 666  (*CTM)[2][2]=1;
 667
 668  Flags=ReadBlobLSBShort(image);
 669  if(Flags & LCK) x=ReadBlobLSBLong(image);  /*Edit lock*/
 670  if(Flags & OID)
 671   {
 672   if(Precision==0)
 673     {x=ReadBlobLSBShort(image);}  /*ObjectID*/
 674   else
 675     {x=ReadBlobLSBLong(image);}  /*ObjectID (Double precision)*/
 676   }
 677  if(Flags & ROT)
 678   {
 679   x=ReadBlobLSBLong(image);  /*Rot Angle*/
 680   if(Angle) *Angle=x/65536.0;
 681   }
 682  if(Flags & (ROT|SCL))
 683   {
 684   x=ReadBlobLSBLong(image);  /*Sx*cos()*/
 685   (*CTM)[0][0] = (float)x/0x10000;
 686   x=ReadBlobLSBLong(image);  /*Sy*cos()*/
 687   (*CTM)[1][1] = (float)x/0x10000;
 688   }
 689  if(Flags & (ROT|SKW))
 690   {
 691   x=ReadBlobLSBLong(image);       /*Kx*sin()*/
 692   (*CTM)[1][0] = (float)x/0x10000;
 693   x=ReadBlobLSBLong(image);       /*Ky*sin()*/
 694   (*CTM)[0][1] = (float)x/0x10000;
 695   }
 696  if(Flags & TRN)
 697   {
 698   x=ReadBlobLSBLong(image); DenX=ReadBlobLSBShort(image);  /*Tx*/
 699         if(x>=0) (*CTM)[0][2] = (float)x+(float)DenX/0x10000;
 700             else (*CTM)[0][2] = (float)x-(float)DenX/0x10000;
 701   x=ReadBlobLSBLong(image); DenX=ReadBlobLSBShort(image);  /*Ty*/
 702   (*CTM)[1][2]=(float)x + ((x>=0)?1:-1)*(float)DenX/0x10000;
 703         if(x>=0) (*CTM)[1][2] = (float)x+(float)DenX/0x10000;
 704             else (*CTM)[1][2] = (float)x-(float)DenX/0x10000;
 705   }
 706  if(Flags & TPR)
 707   {
 708   x=ReadBlobLSBShort(image); DenX=ReadBlobLSBShort(image);  /*Px*/
 709   (*CTM)[2][0] = x + (float)DenX/0x10000;;
 710   x=ReadBlobLSBShort(image);  DenX=ReadBlobLSBShort(image); /*Py*/
 711   (*CTM)[2][1] = x + (float)DenX/0x10000;
 712   }
 713  return(Flags);
 714 }
 715
 716
 717 static Image *ExtractPostscript(Image *image,const ImageInfo *image_info,
 718   MagickOffsetType PS_Offset,ssize_t PS_Size,ExceptionInfo *exception)
 719 {
 720   char
 721     postscript_file[MaxTextExtent];
 722
 723   const MagicInfo
 724     *magic_info;
 725
 726   FILE
 727     *ps_file;
 728
 729   ImageInfo
 730     *clone_info;
 731
 732   Image
 733     *image2;
 734
 735   unsigned char
 736     magick[2*MaxTextExtent];
 737
 738
 739   if ((clone_info=CloneImageInfo(image_info)) == NULL)
 740     return(image);
 741   clone_info->blob=(void *) NULL;
 742   clone_info->length=0;
 743
 744   /* Obtain temporary file */
 745   (void) AcquireUniqueFilename(postscript_file);
 746   ps_file=fopen_utf8(postscript_file,"wb");
 747   if (ps_file == (FILE *) NULL)
 748     goto FINISH;
 749
 750   /* Copy postscript to temporary file */
 751   (void) SeekBlob(image,PS_Offset,SEEK_SET);
 752   (void) ReadBlob(image, 2*MaxTextExtent, magick);
 753
 754   (void) SeekBlob(image,PS_Offset,SEEK_SET);
 755   while(PS_Size-- > 0)
 756     {
 757       (void) fputc(ReadBlobByte(image),ps_file);
 758     }
 759   (void) fclose(ps_file);
 760
 761     /* Detect file format - Check magic.mgk configuration file. */
 762   magic_info=GetMagicInfo(magick,2*MaxTextExtent,exception);
 763   if(magic_info == (const MagicInfo *) NULL) goto FINISH_UNL;
 764   /*     printf("Detected:%s  \n",magic_info->name); */
 765   if(exception->severity != UndefinedException) goto FINISH_UNL;
 766   if(magic_info->name == (char *) NULL) goto FINISH_UNL;
 767
 768   (void) CopyMagickMemory(clone_info->magick,magic_info->name,MaxTextExtent);
 769
 770     /* Read nested image */
 771   /*FormatString(clone_info->filename,"%s:%s",magic_info->name,postscript_file);*/
 772   FormatLocaleString(clone_info->filename,MaxTextExtent,"%s",postscript_file);
 773   image2=ReadImage(clone_info,exception);
 774
 775   if (!image2)
 776     goto FINISH_UNL;
 777
 778   /*
 779     Replace current image with new image while copying base image
 780     attributes.
 781   */
 782   (void) CopyMagickMemory(image2->filename,image->filename,MaxTextExtent);
 783   (void) CopyMagickMemory(image2->magick_filename,image->magick_filename,MaxTextExtent);
 784   (void) CopyMagickMemory(image2->magick,image->magick,MaxTextExtent);
 785   image2->depth=image->depth;
 786   DestroyBlob(image2);
 787   image2->blob=ReferenceBlob(image->blob);
 788
 789   if ((image->rows == 0) || (image->columns == 0))
 790     DeleteImageFromList(&image);
 791
 792   AppendImageToList(&image,image2);
 793
 794  FINISH_UNL:
 795   (void) RelinquishUniqueFileResource(postscript_file);
 796  FINISH:
 797   DestroyImageInfo(clone_info);
 798   return(image);
 799 }
 800 \f
 801 /*
 802 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 803 %                                                                             %
 804 %                                                                             %
 805 %                                                                             %
 806 %   R e a d W P G I m a g e                                                   %
 807 %                                                                             %
 808 %                                                                             %
 809 %                                                                             %
 810 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 811 %
 812 %  Method ReadWPGImage reads an WPG X image file and returns it.  It
 813 %  allocates the memory necessary for the new Image structure and returns a
 814 %  pointer to the new image.
 815 %
 816 %  The format of the ReadWPGImage method is:
 817 %
 818 %    Image *ReadWPGImage(const ImageInfo *image_info,ExceptionInfo *exception)
 819 %
 820 %  A description of each parameter follows:
 821 %
 822 %    o image:  Method ReadWPGImage returns a pointer to the image after
 823 %      reading. A null image is returned if there is a memory shortage or if
 824 %      the image cannot be read.
 825 %
 826 %    o image_info: Specifies a pointer to a ImageInfo structure.
 827 %
 828 %    o exception: return any errors or warnings in this structure.
 829 %
 830 */
 831 static Image *ReadWPGImage(const ImageInfo *image_info,
 832   ExceptionInfo *exception)
 833 {
 834   typedef struct
 835   {
 836     size_t FileId;
 837     MagickOffsetType DataOffset;
 838     unsigned int ProductType;
 839     unsigned int FileType;
 840     unsigned char MajorVersion;
 841     unsigned char MinorVersion;
 842     unsigned int EncryptKey;
 843     unsigned int Reserved;
 844   } WPGHeader;
 845
 846   typedef struct
 847   {
 848     unsigned char RecType;
 849     size_t RecordLength;
 850   } WPGRecord;
 851
 852   typedef struct
 853   {
 854     unsigned char Class;
 855     unsigned char RecType;
 856     size_t Extension;
 857     size_t RecordLength;
 858   } WPG2Record;
 859
 860   typedef struct
 861   {
 862     unsigned  HorizontalUnits;
 863     unsigned  VerticalUnits;
 864     unsigned char PosSizePrecision;
 865   } WPG2Start;
 866
 867   typedef struct
 868   {
 869     unsigned int Width;
 870     unsigned int Heigth;
 871     unsigned int Depth;
 872     unsigned int HorzRes;
 873     unsigned int VertRes;
 874   } WPGBitmapType1;
 875
 876   typedef struct
 877   {
 878     unsigned int Width;
 879     unsigned int Heigth;
 880     unsigned char Depth;
 881     unsigned char Compression;
 882   } WPG2BitmapType1;
 883
 884   typedef struct
 885   {
 886     unsigned int RotAngle;
 887     unsigned int LowLeftX;
 888     unsigned int LowLeftY;
 889     unsigned int UpRightX;
 890     unsigned int UpRightY;
 891     unsigned int Width;
 892     unsigned int Heigth;
 893     unsigned int Depth;
 894     unsigned int HorzRes;
 895     unsigned int VertRes;
 896   } WPGBitmapType2;
 897
 898   typedef struct
 899   {
 900     unsigned int StartIndex;
 901     unsigned int NumOfEntries;
 902   } WPGColorMapRec;
 903
 904   /*
 905   typedef struct {
 906     size_t PS_unknown1;
 907     unsigned int PS_unknown2;
 908     unsigned int PS_unknown3;
 909   } WPGPSl1Record;
 910   */
 911
 912   Image
 913     *image,
 914     *rotated_image;
 915
 916   unsigned int
 917     status;
 918
 919   WPGHeader
 920     Header;
 921
 922   WPGRecord
 923     Rec;
 924
 925   WPG2Record
 926     Rec2;
 927
 928   WPG2Start StartWPG;
 929
 930   WPGBitmapType1
 931     BitmapHeader1;
 932
 933   WPG2BitmapType1
 934     Bitmap2Header1;
 935
 936   WPGBitmapType2
 937     BitmapHeader2;
 938
 939   WPGColorMapRec
 940     WPG_Palette;
 941
 942   int
 943     i,
 944     bpp,
 945     WPG2Flags;
 946
 947   ssize_t
 948     ldblk;
 949
 950   size_t
 951     one;
 952
 953   unsigned char
 954     *BImgBuff;
 955
 956   tCTM CTM;         /*current transform matrix*/
 957
 958   /*
 959     Open image file.
 960   */
 961   assert(image_info != (const ImageInfo *) NULL);
 962   assert(image_info->signature == MagickSignature);
 963   assert(exception != (ExceptionInfo *) NULL);
 964   assert(exception->signature == MagickSignature);
 965   one=1;
 966   image=AcquireImage(image_info,exception);
 967   image->depth=8;
 968   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 969   if (status == MagickFalse)
 970     {
 971       image=DestroyImageList(image);
 972       return((Image *) NULL);
 973     }
 974   /*
 975     Read WPG image.
 976   */
 977   Header.FileId=ReadBlobLSBLong(image);
 978   Header.DataOffset=(MagickOffsetType) ReadBlobLSBLong(image);
 979   Header.ProductType=ReadBlobLSBShort(image);
 980   Header.FileType=ReadBlobLSBShort(image);
 981   Header.MajorVersion=ReadBlobByte(image);
 982   Header.MinorVersion=ReadBlobByte(image);
 983   Header.EncryptKey=ReadBlobLSBShort(image);
 984   Header.Reserved=ReadBlobLSBShort(image);
 985
 986   if (Header.FileId!=0x435057FF || (Header.ProductType>>8)!=0x16)
 987     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 988   if (Header.EncryptKey!=0)
 989     ThrowReaderException(CoderError,"EncryptedWPGImageFileNotSupported");
 990
 991   image->columns = 1;
 992   image->rows = 1;
 993   image->colors = 0;
 994   bpp=0;
 995   BitmapHeader2.RotAngle=0;
 996
 997   switch(Header.FileType)
 998     {
 999     case 1:     /* WPG level 1 */
1000       while(!EOFBlob(image)) /* object parser loop */
1001         {
1002           (void) SeekBlob(image,Header.DataOffset,SEEK_SET);
1003           if(EOFBlob(image))
1004             break;
1005
1006           Rec.RecType=(i=ReadBlobByte(image));
1007           if(i==EOF)
1008             break;
1009           Rd_WP_DWORD(image,&Rec.RecordLength);
1010           if(EOFBlob(image))
1011             break;
1012
1013           Header.DataOffset=TellBlob(image)+Rec.RecordLength;
1014
1015           switch(Rec.RecType)
1016             {
1017             case 0x0B: /* bitmap type 1 */
1018               BitmapHeader1.Width=ReadBlobLSBShort(image);
1019               BitmapHeader1.Heigth=ReadBlobLSBShort(image);
1020               BitmapHeader1.Depth=ReadBlobLSBShort(image);
1021               BitmapHeader1.HorzRes=ReadBlobLSBShort(image);
1022               BitmapHeader1.VertRes=ReadBlobLSBShort(image);
1023
1024               if(BitmapHeader1.HorzRes && BitmapHeader1.VertRes)
1025                 {
1026                   image->units=PixelsPerCentimeterResolution;
1027                   image->resolution.x=BitmapHeader1.HorzRes/470.0;
1028                   image->resolution.y=BitmapHeader1.VertRes/470.0;
1029                 }
1030               image->columns=BitmapHeader1.Width;
1031               image->rows=BitmapHeader1.Heigth;
1032               bpp=BitmapHeader1.Depth;
1033
1034               goto UnpackRaster;
1035
1036             case 0x0E:  /*Color palette */
1037               WPG_Palette.StartIndex=ReadBlobLSBShort(image);
1038               WPG_Palette.NumOfEntries=ReadBlobLSBShort(image);
1039
1040               image->colors=WPG_Palette.NumOfEntries;
1041               if (!AcquireImageColormap(image,image->colors,exception))
1042                 goto NoMemory;
1043               for (i=WPG_Palette.StartIndex;
1044                    i < (int)WPG_Palette.NumOfEntries; i++)
1045                 {
1046                   image->colormap[i].red=ScaleCharToQuantum((unsigned char)
1047                     ReadBlobByte(image));
1048                   image->colormap[i].green=ScaleCharToQuantum((unsigned char)
1049                     ReadBlobByte(image));
1050                   image->colormap[i].blue=ScaleCharToQuantum((unsigned char)
1051                     ReadBlobByte(image));
1052                 }
1053               break;
1054
1055             case 0x11:  /* Start PS l1 */
1056               if(Rec.RecordLength > 8)
1057                 image=ExtractPostscript(image,image_info,
1058                   TellBlob(image)+8,   /* skip PS header in the wpg */
1059                   (ssize_t) Rec.RecordLength-8,exception);
1060               break;
1061
1062             case 0x14:  /* bitmap type 2 */
1063               BitmapHeader2.RotAngle=ReadBlobLSBShort(image);
1064               BitmapHeader2.LowLeftX=ReadBlobLSBShort(image);
1065               BitmapHeader2.LowLeftY=ReadBlobLSBShort(image);
1066               BitmapHeader2.UpRightX=ReadBlobLSBShort(image);
1067               BitmapHeader2.UpRightY=ReadBlobLSBShort(image);
1068               BitmapHeader2.Width=ReadBlobLSBShort(image);
1069               BitmapHeader2.Heigth=ReadBlobLSBShort(image);
1070               BitmapHeader2.Depth=ReadBlobLSBShort(image);
1071               BitmapHeader2.HorzRes=ReadBlobLSBShort(image);
1072               BitmapHeader2.VertRes=ReadBlobLSBShort(image);
1073
1074               image->units=PixelsPerCentimeterResolution;
1075               image->page.width=(unsigned int)
1076                 ((BitmapHeader2.LowLeftX-BitmapHeader2.UpRightX)/470.0);
1077               image->page.height=(unsigned int)
1078                 ((BitmapHeader2.LowLeftX-BitmapHeader2.UpRightY)/470.0);
1079               image->page.x=(int) (BitmapHeader2.LowLeftX/470.0);
1080               image->page.y=(int) (BitmapHeader2.LowLeftX/470.0);
1081               if(BitmapHeader2.HorzRes && BitmapHeader2.VertRes)
1082                 {
1083                   image->resolution.x=BitmapHeader2.HorzRes/470.0;
1084                   image->resolution.y=BitmapHeader2.VertRes/470.0;
1085                 }
1086               image->columns=BitmapHeader2.Width;
1087               image->rows=BitmapHeader2.Heigth;
1088               bpp=BitmapHeader2.Depth;
1089
1090             UnpackRaster:
1091               if ((image->colors == 0) && (bpp != 24))
1092                 {
1093                   image->colors=one << bpp;
1094                   if (!AcquireImageColormap(image,image->colors,exception))
1095                     {
1096                     NoMemory:
1097                       ThrowReaderException(ResourceLimitError,
1098                         "MemoryAllocationFailed");
1099                     }
1100                   /* printf("Load default colormap \n"); */
1101                   for (i=0; (i < (int) image->colors) && (i < 256); i++)
1102                     {
1103                       image->colormap[i].red=ScaleCharToQuantum(WPG1_Palette[i].Red);
1104                       image->colormap[i].green=ScaleCharToQuantum(WPG1_Palette[i].Green);
1105                       image->colormap[i].blue=ScaleCharToQuantum(WPG1_Palette[i].Blue);
1106                     }
1107                 }
1108               else
1109                 {
1110                   if (bpp < 24)
1111                     if ( (image->colors < (one << bpp)) && (bpp != 24) )
1112                       image->colormap=(PixelInfo *) ResizeQuantumMemory(
1113                         image->colormap,(size_t) (one << bpp),
1114                         sizeof(*image->colormap));
1115                 }
1116
1117               if (bpp == 1)
1118                 {
1119                   if(image->colormap[0].red==0 &&
1120                      image->colormap[0].green==0 &&
1121                      image->colormap[0].blue==0 &&
1122                      image->colormap[1].red==0 &&
1123                      image->colormap[1].green==0 &&
1124                      image->colormap[1].blue==0)
1125                     {  /* fix crippled monochrome palette */
1126                       image->colormap[1].red =
1127                         image->colormap[1].green =
1128                         image->colormap[1].blue = QuantumRange;
1129                     }
1130                 }
1131
1132               if(UnpackWPGRaster(image,bpp,exception) < 0)
1133                 /* The raster cannot be unpacked */
1134                 {
1135                 DecompressionFailed:
1136                   ThrowReaderException(CoderError,"UnableToDecompressImage");
1137                     }
1138
1139               if(Rec.RecType==0x14 && BitmapHeader2.RotAngle!=0 && !image_info->ping)
1140                 {
1141                   /* flop command */
1142                   if(BitmapHeader2.RotAngle & 0x8000)
1143                     {
1144                       rotated_image = FlopImage(image, exception);
1145                       rotated_image->blob = image->blob;
1146                       DuplicateBlob(rotated_image,image);
1147                       (void) RemoveLastImageFromList(&image);
1148                       AppendImageToList(&image,rotated_image);
1149                     }
1150                   /* flip command */
1151                   if(BitmapHeader2.RotAngle & 0x2000)
1152                     {
1153                       rotated_image = FlipImage(image, exception);
1154                       rotated_image->blob = image->blob;
1155                       DuplicateBlob(rotated_image,image);
1156                       (void) RemoveLastImageFromList(&image);
1157                       AppendImageToList(&image,rotated_image);
1158                     }
1159
1160       /* rotate command */
1161                   if(BitmapHeader2.RotAngle & 0x0FFF)
1162                     {
1163                       rotated_image = RotateImage(image, (BitmapHeader2.RotAngle & 0x0FFF), exception);
1164                       rotated_image->blob = image->blob;
1165                       DuplicateBlob(rotated_image,image);
1166                       (void) RemoveLastImageFromList(&image);
1167                       AppendImageToList(&image,rotated_image);
1168                     }
1169                 }
1170
1171               /* Allocate next image structure. */
1172               AcquireNextImage(image_info,image,exception);
1173               image->depth=8;
1174               if (image->next == (Image *) NULL)
1175                 goto Finish;
1176               image=SyncNextImageInList(image);
1177               image->columns=image->rows=0;
1178               image->colors=0;
1179               break;
1180
1181             case 0x1B:  /* Postscript l2 */
1182               if(Rec.RecordLength>0x3C)
1183                 image=ExtractPostscript(image,image_info,
1184                   TellBlob(image)+0x3C,   /* skip PS l2 header in the wpg */
1185                   (ssize_t) Rec.RecordLength-0x3C,exception);
1186               break;
1187             }
1188         }
1189       break;
1190
1191     case 2:  /* WPG level 2 */
1192       (void) memset(CTM,0,sizeof(CTM));
1193       StartWPG.PosSizePrecision = 0;
1194       while(!EOFBlob(image)) /* object parser loop */
1195         {
1196           (void) SeekBlob(image,Header.DataOffset,SEEK_SET);
1197           if(EOFBlob(image))
1198             break;
1199
1200           Rec2.Class=(i=ReadBlobByte(image));
1201           if(i==EOF)
1202             break;
1203           Rec2.RecType=(i=ReadBlobByte(image));
1204           if(i==EOF)
1205             break;
1206           Rd_WP_DWORD(image,&Rec2.Extension);
1207           Rd_WP_DWORD(image,&Rec2.RecordLength);
1208           if(EOFBlob(image))
1209             break;
1210
1211           Header.DataOffset=TellBlob(image)+Rec2.RecordLength;
1212
1213           switch(Rec2.RecType)
1214             {
1215       case 1:
1216               StartWPG.HorizontalUnits=ReadBlobLSBShort(image);
1217               StartWPG.VerticalUnits=ReadBlobLSBShort(image);
1218               StartWPG.PosSizePrecision=ReadBlobByte(image);
1219               break;
1220             case 0x0C:    /* Color palette */
1221               WPG_Palette.StartIndex=ReadBlobLSBShort(image);
1222               WPG_Palette.NumOfEntries=ReadBlobLSBShort(image);
1223
1224               image->colors=WPG_Palette.NumOfEntries;
1225               if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
1226                 ThrowReaderException(ResourceLimitError,
1227                   "MemoryAllocationFailed");
1228               for (i=WPG_Palette.StartIndex;
1229                    i < (int)WPG_Palette.NumOfEntries; i++)
1230                 {
1231                   image->colormap[i].red=ScaleCharToQuantum((char)
1232                     ReadBlobByte(image));
1233                   image->colormap[i].green=ScaleCharToQuantum((char)
1234                     ReadBlobByte(image));
1235                   image->colormap[i].blue=ScaleCharToQuantum((char)
1236                     ReadBlobByte(image));
1237                   (void) ReadBlobByte(image);   /*Opacity??*/
1238                 }
1239               break;
1240             case 0x0E:
1241               Bitmap2Header1.Width=ReadBlobLSBShort(image);
1242               Bitmap2Header1.Heigth=ReadBlobLSBShort(image);
1243               Bitmap2Header1.Depth=ReadBlobByte(image);
1244               Bitmap2Header1.Compression=ReadBlobByte(image);
1245
1246               if(Bitmap2Header1.Compression > 1)
1247                 continue; /*Unknown compression method */
1248               switch(Bitmap2Header1.Depth)
1249                 {
1250                 case 1:
1251                   bpp=1;
1252                   break;
1253                 case 2:
1254                   bpp=2;
1255                   break;
1256                 case 3:
1257                   bpp=4;
1258                   break;
1259                 case 4:
1260                   bpp=8;
1261                   break;
1262                 case 8:
1263                   bpp=24;
1264                   break;
1265                 default:
1266                   continue;  /*Ignore raster with unknown depth*/
1267                 }
1268               image->columns=Bitmap2Header1.Width;
1269               image->rows=Bitmap2Header1.Heigth;
1270
1271               if ((image->colors == 0) && (bpp != 24))
1272                 {
1273                   size_t
1274                     one;
1275
1276                   one=1;
1277                   image->colors=one << bpp;
1278                   if (!AcquireImageColormap(image,image->colors,exception))
1279                     goto NoMemory;
1280                 }
1281               else
1282                 {
1283                   if(bpp < 24)
1284                     if( image->colors<(one << bpp) && bpp!=24 )
1285                       image->colormap=(PixelInfo *) ResizeQuantumMemory(
1286                        image->colormap,(size_t) (one << bpp),
1287                        sizeof(*image->colormap));
1288                 }
1289
1290
1291               switch(Bitmap2Header1.Compression)
1292                 {
1293                 case 0:    /*Uncompressed raster*/
1294                   {
1295                     ldblk=(ssize_t) ((bpp*image->columns+7)/8);
1296                     BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t)
1297                       ldblk,sizeof(*BImgBuff));
1298                     if (BImgBuff == (unsigned char *) NULL)
1299                       goto NoMemory;
1300
1301                     for(i=0; i< (ssize_t) image->rows; i++)
1302                       {
1303                         (void) ReadBlob(image,ldblk,BImgBuff);
1304                         InsertRow(image,BImgBuff,i,bpp,exception);
1305                       }
1306
1307                     if(BImgBuff)
1308                       BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);;
1309                     break;
1310                   }
1311                 case 1:    /*RLE for WPG2 */
1312                   {
1313                     if( UnpackWPG2Raster(image,bpp,exception) < 0)
1314                       goto DecompressionFailed;
1315                     break;
1316                   }
1317                 }
1318
1319               if(CTM[0][0]<0 && !image_info->ping)
1320     {    /*?? RotAngle=360-RotAngle;*/
1321       rotated_image = FlopImage(image, exception);
1322       rotated_image->blob = image->blob;
1323       DuplicateBlob(rotated_image,image);
1324       (void) RemoveLastImageFromList(&image);
1325       AppendImageToList(&image,rotated_image);
1326                   /* Try to change CTM according to Flip - I am not sure, must be checked.
1327                      Tx(0,0)=-1;      Tx(1,0)=0;   Tx(2,0)=0;
1328                      Tx(0,1)= 0;      Tx(1,1)=1;   Tx(2,1)=0;
1329                      Tx(0,2)=(WPG._2Rect.X_ur+WPG._2Rect.X_ll);
1330                      Tx(1,2)=0;   Tx(2,2)=1; */
1331                 }
1332               if(CTM[1][1]<0 && !image_info->ping)
1333     {    /*?? RotAngle=360-RotAngle;*/
1334       rotated_image = FlipImage(image, exception);
1335       rotated_image->blob = image->blob;
1336       DuplicateBlob(rotated_image,image);
1337       (void) RemoveLastImageFromList(&image);
1338       AppendImageToList(&image,rotated_image);
1339                   /* Try to change CTM according to Flip - I am not sure, must be checked.
1340                      float_matrix Tx(3,3);
1341                      Tx(0,0)= 1;   Tx(1,0)= 0;   Tx(2,0)=0;
1342                      Tx(0,1)= 0;   Tx(1,1)=-1;   Tx(2,1)=0;
1343                      Tx(0,2)= 0;   Tx(1,2)=(WPG._2Rect.Y_ur+WPG._2Rect.Y_ll);
1344                      Tx(2,2)=1; */
1345     }
1346
1347
1348               /* Allocate next image structure. */
1349               AcquireNextImage(image_info,image,exception);
1350               image->depth=8;
1351               if (image->next == (Image *) NULL)
1352                 goto Finish;
1353               image=SyncNextImageInList(image);
1354               image->columns=image->rows=1;
1355               image->colors=0;
1356               break;
1357
1358             case 0x12:  /* Postscript WPG2*/
1359         i=ReadBlobLSBShort(image);
1360               if(Rec2.RecordLength > (unsigned int) i)
1361                 image=ExtractPostscript(image,image_info,
1362                   TellBlob(image)+i,    /*skip PS header in the wpg2*/
1363                   (ssize_t) (Rec2.RecordLength-i-2),exception);
1364               break;
1365
1366       case 0x1B:          /*bitmap rectangle*/
1367               WPG2Flags = LoadWPG2Flags(image,StartWPG.PosSizePrecision,NULL,&CTM);
1368               (void) WPG2Flags;
1369               break;
1370             }
1371         }
1372
1373       break;
1374
1375     default:
1376       {
1377          ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported");
1378       }
1379    }
1380
1381  Finish:
1382   (void) CloseBlob(image);
1383
1384   {
1385     Image
1386       *p;
1387
1388     ssize_t
1389       scene=0;
1390
1391     /*
1392       Rewind list, removing any empty images while rewinding.
1393     */
1394     p=image;
1395     image=NULL;
1396     while (p != (Image *) NULL)
1397       {
1398         Image *tmp=p;
1399         if ((p->rows == 0) || (p->columns == 0)) {
1400           p=p->previous;
1401           DeleteImageFromList(&tmp);
1402         } else {
1403           image=p;
1404           p=p->previous;
1405         }
1406       }
1407     /*
1408       Fix scene numbers.
1409     */
1410     for (p=image; p != (Image *) NULL; p=p->next)
1411       p->scene=(size_t) scene++;
1412   }
1413   if (image == (Image *) NULL)
1414     ThrowReaderException(CorruptImageError,
1415       "ImageFileDoesNotContainAnyImageData");
1416   return(image);
1417 }
1418 \f
1419 /*
1420 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1421 %                                                                             %
1422 %                                                                             %
1423 %                                                                             %
1424 %   R e g i s t e r W P G I m a g e                                           %
1425 %                                                                             %
1426 %                                                                             %
1427 %                                                                             %
1428 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1429 %
1430 %  Method RegisterWPGImage adds attributes for the WPG image format to
1431 %  the list of supported formats.  The attributes include the image format
1432 %  tag, a method to read and/or write the format, whether the format
1433 %  supports the saving of more than one frame to the same file or blob,
1434 %  whether the format supports native in-memory I/O, and a brief
1435 %  description of the format.
1436 %
1437 %  The format of the RegisterWPGImage method is:
1438 %
1439 %      size_t RegisterWPGImage(void)
1440 %
1441 */
1442 ModuleExport size_t RegisterWPGImage(void)
1443 {
1444   MagickInfo
1445     *entry;
1446
1447   entry=SetMagickInfo("WPG");
1448   entry->decoder=(DecodeImageHandler *) ReadWPGImage;
1449   entry->magick=(IsImageFormatHandler *) IsWPG;
1450   entry->description=AcquireString("Word Perfect Graphics");
1451   entry->module=ConstantString("WPG");
1452   entry->seekable_stream=MagickTrue;
1453   (void) RegisterMagickInfo(entry);
1454   return(MagickImageCoderSignature);
1455 }
1456 \f
1457 /*
1458 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1459 %                                                                             %
1460 %                                                                             %
1461 %                                                                             %
1462 %   U n r e g i s t e r W P G I m a g e                                       %
1463 %                                                                             %
1464 %                                                                             %
1465 %                                                                             %
1466 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1467 %
1468 %  Method UnregisterWPGImage removes format registrations made by the
1469 %  WPG module from the list of supported formats.
1470 %
1471 %  The format of the UnregisterWPGImage method is:
1472 %
1473 %      UnregisterWPGImage(void)
1474 %
1475 */
1476 ModuleExport void UnregisterWPGImage(void)
1477 {
1478   (void) UnregisterMagickInfo("WPG");
1479 }