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 1999-2011 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/image.h"
  52 #include "MagickCore/image-private.h"
  53 #include "MagickCore/list.h"
  54 #include "MagickCore/magic.h"
  55 #include "MagickCore/magick.h"
  56 #include "MagickCore/memory_.h"
  57 #include "MagickCore/resource_.h"
  58 #include "MagickCore/pixel-accessor.h"
  59 #include "MagickCore/quantum-private.h"
  60 #include "MagickCore/shear.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 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(unsigned char *p,ssize_t y,Image *image, int bpp)
 268 {
 269   ExceptionInfo
 270     *exception;
 271
 272   int
 273     bit;
 274
 275   Quantum
 276     index;
 277
 278   register Quantum
 279     *q;
 280
 281   ssize_t
 282     x;
 283
 284   exception=(&image->exception);
 285   switch (bpp)
 286     {
 287     case 1:  /* Convert bitmap scanline. */
 288       {
 289         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 290         if (q == (Quantum *) NULL)
 291           break;
 292         for (x=0; x < ((ssize_t) image->columns-7); x+=8)
 293         {
 294           for (bit=0; bit < 8; bit++)
 295           {
 296             index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
 297             SetPixelIndex(image,index,q);
 298             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 299             q+=GetPixelChannels(image);
 300           }
 301           p++;
 302         }
 303         if ((image->columns % 8) != 0)
 304           {
 305             for (bit=0; bit < (ssize_t) (image->columns % 8); bit++)
 306             {
 307               index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
 308               SetPixelIndex(image,index,q);
 309               SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 310               q+=GetPixelChannels(image);
 311             }
 312             p++;
 313           }
 314         if (!SyncAuthenticPixels(image,exception))
 315           break;
 316         break;
 317       }
 318     case 2:  /* Convert PseudoColor scanline. */
 319       {
 320         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 321         if (q == (Quantum *) NULL)
 322           break;
 323         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 324         {
 325             index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
 326             SetPixelIndex(image,index,q);
 327             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 328             q+=GetPixelChannels(image);
 329             index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
 330             SetPixelIndex(image,index,q);
 331             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 332             q+=GetPixelChannels(image);
 333             index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
 334             SetPixelIndex(image,index,q);
 335             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 336             q+=GetPixelChannels(image);
 337             index=ConstrainColormapIndex(image,(*p) & 0x3);
 338             SetPixelIndex(image,index,q);
 339             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 340             p++;
 341             q+=GetPixelChannels(image);
 342         }
 343        if ((image->columns % 4) != 0)
 344           {
 345             index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
 346             SetPixelIndex(image,index,q);
 347             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 348             q+=GetPixelChannels(image);
 349             if ((image->columns % 4) >= 1)
 350
 351               {
 352                 index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
 353                 SetPixelIndex(image,index,q);
 354                 SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 355                 q+=GetPixelChannels(image);
 356                 if ((image->columns % 4) >= 2)
 357
 358                   {
 359                     index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
 360                     SetPixelIndex(image,index,q);
 361                     SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 362                     q+=GetPixelChannels(image);
 363                   }
 364               }
 365             p++;
 366           }
 367         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 368           break;
 369         break;
 370       }
 371
 372     case 4:  /* Convert PseudoColor scanline. */
 373       {
 374         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 375         if (q == (Quantum *) NULL)
 376           break;
 377         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 378           {
 379             index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f);
 380             SetPixelIndex(image,index,q);
 381             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 382             q+=GetPixelChannels(image);
 383             index=ConstrainColormapIndex(image,(*p) & 0x0f);
 384             SetPixelIndex(image,index,q);
 385             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 386             p++;
 387             q+=GetPixelChannels(image);
 388           }
 389         if ((image->columns % 2) != 0)
 390           {
 391             index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f);
 392             SetPixelIndex(image,index,q);
 393             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 394             p++;
 395             q+=GetPixelChannels(image);
 396           }
 397         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 398           break;
 399         break;
 400       }
 401     case 8: /* Convert PseudoColor scanline. */
 402       {
 403         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 404         if (q == (Quantum *) NULL) break;
 405
 406         for (x=0; x < (ssize_t) image->columns; x++)
 407           {
 408             index=ConstrainColormapIndex(image,*p);
 409             SetPixelIndex(image,index,q);
 410             SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
 411             p++;
 412             q+=GetPixelChannels(image);
 413           }
 414         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 415           break;
 416       }
 417       break;
 418
 419     case 24:     /*  Convert DirectColor scanline.  */
 420       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 421       if (q == (Quantum *) NULL)
 422         break;
 423       for (x=0; x < (ssize_t) image->columns; x++)
 424         {
 425           SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 426           SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 427           SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 428           q+=GetPixelChannels(image);
 429         }
 430       if (!SyncAuthenticPixels(image,exception))
 431         break;
 432       break;
 433     }
 434 }
 435
 436
 437 /* Helper for WPG1 raster reader. */
 438 #define InsertByte(b) \
 439 { \
 440   BImgBuff[x]=b; \
 441   x++; \
 442   if((ssize_t) x>=ldblk) \
 443   { \
 444     InsertRow(BImgBuff,(ssize_t) y,image,bpp); \
 445     x=0; \
 446     y++; \
 447     } \
 448 }
 449 /* WPG1 raster reader. */
 450 static int UnpackWPGRaster(Image *image,int bpp)
 451 {
 452   int
 453     x,
 454     y,
 455     i;
 456
 457   unsigned char
 458     bbuf,
 459     *BImgBuff,
 460     RunCount;
 461
 462   ssize_t
 463     ldblk;
 464
 465   x=0;
 466   y=0;
 467
 468   ldblk=(ssize_t) ((bpp*image->columns+7)/8);
 469   BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t) ldblk,
 470     sizeof(*BImgBuff));
 471   if(BImgBuff==NULL) return(-2);
 472
 473   while(y<(ssize_t) image->rows)
 474     {
 475       bbuf=ReadBlobByte(image);
 476
 477       RunCount=bbuf & 0x7F;
 478       if(bbuf & 0x80)
 479         {
 480           if(RunCount)  /* repeat next byte runcount * */
 481             {
 482               bbuf=ReadBlobByte(image);
 483               for(i=0;i<(int) RunCount;i++) InsertByte(bbuf);
 484             }
 485           else {  /* read next byte as RunCount; repeat 0xFF runcount* */
 486             RunCount=ReadBlobByte(image);
 487             for(i=0;i<(int) RunCount;i++) InsertByte(0xFF);
 488           }
 489         }
 490       else {
 491         if(RunCount)   /* next runcount byte are readed directly */
 492           {
 493             for(i=0;i < (int) RunCount;i++)
 494               {
 495                 bbuf=ReadBlobByte(image);
 496                 InsertByte(bbuf);
 497               }
 498           }
 499         else {  /* repeat previous line runcount* */
 500           RunCount=ReadBlobByte(image);
 501           if(x) {    /* attempt to duplicate row from x position: */
 502             /* I do not know what to do here */
 503             BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 504             return(-3);
 505           }
 506           for(i=0;i < (int) RunCount;i++)
 507             {
 508               x=0;
 509               y++;    /* Here I need to duplicate previous row RUNCOUNT* */
 510               if(y<2) continue;
 511               if(y>(ssize_t) image->rows)
 512                 {
 513                   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 514                   return(-4);
 515                 }
 516               InsertRow(BImgBuff,y-1,image,bpp);
 517             }
 518         }
 519       }
 520     }
 521   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 522   return(0);
 523 }
 524
 525
 526 /* Helper for WPG2 reader. */
 527 #define InsertByte6(b) \
 528 { \
 529   if(XorMe)\
 530     BImgBuff[x] = (unsigned char)~b;\
 531   else\
 532     BImgBuff[x] = b;\
 533   x++; \
 534   if((ssize_t) x >= ldblk) \
 535   { \
 536     InsertRow(BImgBuff,(ssize_t) y,image,bpp); \
 537     x=0; \
 538     y++; \
 539    } \
 540 }
 541 /* WPG2 raster reader. */
 542 static int UnpackWPG2Raster(Image *image,int bpp)
 543 {
 544   size_t
 545     x,
 546     y;
 547
 548   ssize_t
 549     ldblk;
 550
 551   int XorMe = 0;
 552
 553   unsigned int
 554     SampleSize=1;
 555
 556   unsigned char
 557     bbuf,
 558     *BImgBuff,
 559     RunCount,
 560     SampleBuffer[8];
 561
 562   unsigned int
 563     i;
 564
 565   x=0;
 566   y=0;
 567   ldblk=(ssize_t) ((bpp*image->columns+7)/8);
 568   BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t) ldblk,
 569     sizeof(*BImgBuff));
 570   if(BImgBuff==NULL)
 571     return(-2);
 572
 573   while( y< image->rows)
 574     {
 575       bbuf=ReadBlobByte(image);
 576
 577       switch(bbuf)
 578         {
 579         case 0x7D:
 580           SampleSize=ReadBlobByte(image);  /* DSZ */
 581           if(SampleSize>8)
 582             return(-2);
 583           if(SampleSize<1)
 584             return(-2);
 585           break;
 586         case 0x7E:
 587           (void) FormatLocaleFile(stderr,
 588             "\nUnsupported WPG token XOR, please report!");
 589           XorMe=!XorMe;
 590           break;
 591         case 0x7F:
 592           RunCount=ReadBlobByte(image);   /* BLK */
 593           for(i=0; i < SampleSize*(RunCount+1); i++)
 594             {
 595               InsertByte6(0);
 596             }
 597           break;
 598         case 0xFD:
 599           RunCount=ReadBlobByte(image);   /* EXT */
 600           for(i=0; i<= RunCount;i++)
 601             for(bbuf=0; bbuf < SampleSize; bbuf++)
 602               InsertByte6(SampleBuffer[bbuf]);
 603           break;
 604         case 0xFE:
 605           RunCount=ReadBlobByte(image);  /* RST */
 606           if(x!=0)
 607             {
 608               (void) FormatLocaleFile(stderr,
 609                 "\nUnsupported WPG2 unaligned token RST x=%.20g, please report!\n"
 610                 ,(double) x);
 611               return(-3);
 612             }
 613           {
 614             /* duplicate the previous row RunCount x */
 615             for(i=0;i<=RunCount;i++)
 616               {
 617                 InsertRow(BImgBuff,(ssize_t) (image->rows >= y ? y : image->rows-1),
 618                           image,bpp);
 619                 y++;
 620               }
 621           }
 622           break;
 623         case 0xFF:
 624           RunCount=ReadBlobByte(image);   /* WHT */
 625           for(i=0; i < SampleSize*(RunCount+1); i++)
 626             {
 627               InsertByte6(0xFF);
 628             }
 629           break;
 630         default:
 631           RunCount=bbuf & 0x7F;
 632
 633           if(bbuf & 0x80)     /* REP */
 634             {
 635               for(i=0; i < SampleSize; i++)
 636                 SampleBuffer[i]=ReadBlobByte(image);
 637               for(i=0;i<=RunCount;i++)
 638                 for(bbuf=0;bbuf<SampleSize;bbuf++)
 639                   InsertByte6(SampleBuffer[bbuf]);
 640             }
 641           else {      /* NRP */
 642             for(i=0; i< SampleSize*(RunCount+1);i++)
 643               {
 644                 bbuf=ReadBlobByte(image);
 645                 InsertByte6(bbuf);
 646               }
 647           }
 648         }
 649     }
 650   BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 651   return(0);
 652 }
 653
 654
 655 typedef float tCTM[3][3];
 656
 657 static unsigned LoadWPG2Flags(Image *image,char Precision,float *Angle,tCTM *CTM)
 658 {
 659 const unsigned char TPR=1,TRN=2,SKW=4,SCL=8,ROT=0x10,OID=0x20,LCK=0x80;
 660 ssize_t x;
 661 unsigned DenX;
 662 unsigned Flags;
 663
 664  (void) memset(*CTM,0,sizeof(*CTM));     /*CTM.erase();CTM.resize(3,3);*/
 665  (*CTM)[0][0]=1;
 666  (*CTM)[1][1]=1;
 667  (*CTM)[2][2]=1;
 668
 669  Flags=ReadBlobLSBShort(image);
 670  if(Flags & LCK) x=ReadBlobLSBLong(image);  /*Edit lock*/
 671  if(Flags & OID)
 672   {
 673   if(Precision==0)
 674     {x=ReadBlobLSBShort(image);}  /*ObjectID*/
 675   else
 676     {x=ReadBlobLSBLong(image);}  /*ObjectID (Double precision)*/
 677   }
 678  if(Flags & ROT)
 679   {
 680   x=ReadBlobLSBLong(image);  /*Rot Angle*/
 681   if(Angle) *Angle=x/65536.0;
 682   }
 683  if(Flags & (ROT|SCL))
 684   {
 685   x=ReadBlobLSBLong(image);  /*Sx*cos()*/
 686   (*CTM)[0][0] = (float)x/0x10000;
 687   x=ReadBlobLSBLong(image);  /*Sy*cos()*/
 688   (*CTM)[1][1] = (float)x/0x10000;
 689   }
 690  if(Flags & (ROT|SKW))
 691   {
 692   x=ReadBlobLSBLong(image);       /*Kx*sin()*/
 693   (*CTM)[1][0] = (float)x/0x10000;
 694   x=ReadBlobLSBLong(image);       /*Ky*sin()*/
 695   (*CTM)[0][1] = (float)x/0x10000;
 696   }
 697  if(Flags & TRN)
 698   {
 699   x=ReadBlobLSBLong(image); DenX=ReadBlobLSBShort(image);  /*Tx*/
 700         if(x>=0) (*CTM)[0][2] = (float)x+(float)DenX/0x10000;
 701             else (*CTM)[0][2] = (float)x-(float)DenX/0x10000;
 702   x=ReadBlobLSBLong(image); DenX=ReadBlobLSBShort(image);  /*Ty*/
 703   (*CTM)[1][2]=(float)x + ((x>=0)?1:-1)*(float)DenX/0x10000;
 704         if(x>=0) (*CTM)[1][2] = (float)x+(float)DenX/0x10000;
 705             else (*CTM)[1][2] = (float)x-(float)DenX/0x10000;
 706   }
 707  if(Flags & TPR)
 708   {
 709   x=ReadBlobLSBShort(image); DenX=ReadBlobLSBShort(image);  /*Px*/
 710   (*CTM)[2][0] = x + (float)DenX/0x10000;;
 711   x=ReadBlobLSBShort(image);  DenX=ReadBlobLSBShort(image); /*Py*/
 712   (*CTM)[2][1] = x + (float)DenX/0x10000;
 713   }
 714  return(Flags);
 715 }
 716
 717
 718 static Image *ExtractPostscript(Image *image,const ImageInfo *image_info,
 719   MagickOffsetType PS_Offset,ssize_t PS_Size,ExceptionInfo *exception)
 720 {
 721   char
 722     postscript_file[MaxTextExtent];
 723
 724   const MagicInfo
 725     *magic_info;
 726
 727   FILE
 728     *ps_file;
 729
 730   ImageInfo
 731     *clone_info;
 732
 733   Image
 734     *image2;
 735
 736   unsigned char
 737     magick[2*MaxTextExtent];
 738
 739
 740   if ((clone_info=CloneImageInfo(image_info)) == NULL)
 741     return(image);
 742   clone_info->blob=(void *) NULL;
 743   clone_info->length=0;
 744
 745   /* Obtain temporary file */
 746   AcquireUniqueFilename(postscript_file);
 747   ps_file=fopen_utf8(postscript_file,"wb");
 748   if (ps_file == (FILE *) NULL)
 749     goto FINISH;
 750
 751   /* Copy postscript to temporary file */
 752   (void) SeekBlob(image,PS_Offset,SEEK_SET);
 753   (void) ReadBlob(image, 2*MaxTextExtent, magick);
 754
 755   (void) SeekBlob(image,PS_Offset,SEEK_SET);
 756   while(PS_Size-- > 0)
 757     {
 758       (void) fputc(ReadBlobByte(image),ps_file);
 759     }
 760   (void) fclose(ps_file);
 761
 762     /* Detect file format - Check magic.mgk configuration file. */
 763   magic_info=GetMagicInfo(magick,2*MaxTextExtent,exception);
 764   if(magic_info == (const MagicInfo *) NULL) goto FINISH_UNL;
 765   /*     printf("Detected:%s  \n",magic_info->name); */
 766   if(exception->severity != UndefinedException) goto FINISH_UNL;
 767   if(magic_info->name == (char *) NULL) goto FINISH_UNL;
 768
 769   (void) CopyMagickMemory(clone_info->magick,magic_info->name,MaxTextExtent);
 770
 771     /* Read nested image */
 772   /*FormatString(clone_info->filename,"%s:%s",magic_info->name,postscript_file);*/
 773   FormatLocaleString(clone_info->filename,MaxTextExtent,"%s",postscript_file);
 774   image2=ReadImage(clone_info,exception);
 775
 776   if (!image2)
 777     goto FINISH_UNL;
 778
 779   /*
 780     Replace current image with new image while copying base image
 781     attributes.
 782   */
 783   (void) CopyMagickMemory(image2->filename,image->filename,MaxTextExtent);
 784   (void) CopyMagickMemory(image2->magick_filename,image->magick_filename,MaxTextExtent);
 785   (void) CopyMagickMemory(image2->magick,image->magick,MaxTextExtent);
 786   image2->depth=image->depth;
 787   DestroyBlob(image2);
 788   image2->blob=ReferenceBlob(image->blob);
 789
 790   if ((image->rows == 0) || (image->columns == 0))
 791     DeleteImageFromList(&image);
 792
 793   AppendImageToList(&image,image2);
 794
 795  FINISH_UNL:
 796   (void) RelinquishUniqueFileResource(postscript_file);
 797  FINISH:
 798   DestroyImageInfo(clone_info);
 799   return(image);
 800 }
 801 \f
 802 /*
 803 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 804 %                                                                             %
 805 %                                                                             %
 806 %                                                                             %
 807 %   R e a d W P G I m a g e                                                   %
 808 %                                                                             %
 809 %                                                                             %
 810 %                                                                             %
 811 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 812 %
 813 %  Method ReadWPGImage reads an WPG X image file and returns it.  It
 814 %  allocates the memory necessary for the new Image structure and returns a
 815 %  pointer to the new image.
 816 %
 817 %  The format of the ReadWPGImage method is:
 818 %
 819 %    Image *ReadWPGImage(const ImageInfo *image_info,ExceptionInfo *exception)
 820 %
 821 %  A description of each parameter follows:
 822 %
 823 %    o image:  Method ReadWPGImage returns a pointer to the image after
 824 %      reading. A null image is returned if there is a memory shortage or if
 825 %      the image cannot be read.
 826 %
 827 %    o image_info: Specifies a pointer to a ImageInfo structure.
 828 %
 829 %    o exception: return any errors or warnings in this structure.
 830 %
 831 */
 832 static Image *ReadWPGImage(const ImageInfo *image_info,
 833   ExceptionInfo *exception)
 834 {
 835   typedef struct
 836   {
 837     size_t FileId;
 838     MagickOffsetType DataOffset;
 839     unsigned int ProductType;
 840     unsigned int FileType;
 841     unsigned char MajorVersion;
 842     unsigned char MinorVersion;
 843     unsigned int EncryptKey;
 844     unsigned int Reserved;
 845   } WPGHeader;
 846
 847   typedef struct
 848   {
 849     unsigned char RecType;
 850     size_t RecordLength;
 851   } WPGRecord;
 852
 853   typedef struct
 854   {
 855     unsigned char Class;
 856     unsigned char RecType;
 857     size_t Extension;
 858     size_t RecordLength;
 859   } WPG2Record;
 860
 861   typedef struct
 862   {
 863     unsigned  HorizontalUnits;
 864     unsigned  VerticalUnits;
 865     unsigned char PosSizePrecision;
 866   } WPG2Start;
 867
 868   typedef struct
 869   {
 870     unsigned int Width;
 871     unsigned int Heigth;
 872     unsigned int Depth;
 873     unsigned int HorzRes;
 874     unsigned int VertRes;
 875   } WPGBitmapType1;
 876
 877   typedef struct
 878   {
 879     unsigned int Width;
 880     unsigned int Heigth;
 881     unsigned char Depth;
 882     unsigned char Compression;
 883   } WPG2BitmapType1;
 884
 885   typedef struct
 886   {
 887     unsigned int RotAngle;
 888     unsigned int LowLeftX;
 889     unsigned int LowLeftY;
 890     unsigned int UpRightX;
 891     unsigned int UpRightY;
 892     unsigned int Width;
 893     unsigned int Heigth;
 894     unsigned int Depth;
 895     unsigned int HorzRes;
 896     unsigned int VertRes;
 897   } WPGBitmapType2;
 898
 899   typedef struct
 900   {
 901     unsigned int StartIndex;
 902     unsigned int NumOfEntries;
 903   } WPGColorMapRec;
 904
 905   typedef struct {
 906     size_t PS_unknown1;
 907     unsigned int PS_unknown2;
 908     unsigned int PS_unknown3;
 909   } WPGPSl1Record;
 910
 911   Image
 912     *image,
 913     *rotated_image;
 914
 915   unsigned int
 916     status;
 917
 918   WPGHeader
 919     Header;
 920
 921   WPGRecord
 922     Rec;
 923
 924   WPG2Record
 925     Rec2;
 926
 927   WPG2Start StartWPG;
 928
 929   WPGBitmapType1
 930     BitmapHeader1;
 931
 932   WPG2BitmapType1
 933     Bitmap2Header1;
 934
 935   WPGBitmapType2
 936     BitmapHeader2;
 937
 938   WPGColorMapRec
 939     WPG_Palette;
 940
 941   int
 942     i,
 943     bpp,
 944     WPG2Flags;
 945
 946   ssize_t
 947     ldblk;
 948
 949   size_t
 950     one;
 951
 952   unsigned char
 953     *BImgBuff;
 954
 955   tCTM CTM;         /*current transform matrix*/
 956
 957   /*
 958     Open image file.
 959   */
 960   assert(image_info != (const ImageInfo *) NULL);
 961   assert(image_info->signature == MagickSignature);
 962   assert(exception != (ExceptionInfo *) NULL);
 963   assert(exception->signature == MagickSignature);
 964   one=1;
 965   image=AcquireImage(image_info,exception);
 966   image->depth=8;
 967   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 968   if (status == MagickFalse)
 969     {
 970       image=DestroyImageList(image);
 971       return((Image *) NULL);
 972     }
 973   /*
 974     Read WPG image.
 975   */
 976   Header.FileId=ReadBlobLSBLong(image);
 977   Header.DataOffset=(MagickOffsetType) ReadBlobLSBLong(image);
 978   Header.ProductType=ReadBlobLSBShort(image);
 979   Header.FileType=ReadBlobLSBShort(image);
 980   Header.MajorVersion=ReadBlobByte(image);
 981   Header.MinorVersion=ReadBlobByte(image);
 982   Header.EncryptKey=ReadBlobLSBShort(image);
 983   Header.Reserved=ReadBlobLSBShort(image);
 984
 985   if (Header.FileId!=0x435057FF || (Header.ProductType>>8)!=0x16)
 986     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 987   if (Header.EncryptKey!=0)
 988     ThrowReaderException(CoderError,"EncryptedWPGImageFileNotSupported");
 989
 990   image->columns = 1;
 991   image->rows = 1;
 992   image->colors = 0;
 993   bpp=0;
 994   BitmapHeader2.RotAngle=0;
 995
 996   switch(Header.FileType)
 997     {
 998     case 1:     /* WPG level 1 */
 999       while(!EOFBlob(image)) /* object parser loop */
1000         {
1001           (void) SeekBlob(image,Header.DataOffset,SEEK_SET);
1002           if(EOFBlob(image))
1003             break;
1004
1005           Rec.RecType=(i=ReadBlobByte(image));
1006           if(i==EOF)
1007             break;
1008           Rd_WP_DWORD(image,&Rec.RecordLength);
1009           if(EOFBlob(image))
1010             break;
1011
1012           Header.DataOffset=TellBlob(image)+Rec.RecordLength;
1013
1014           switch(Rec.RecType)
1015             {
1016             case 0x0B: /* bitmap type 1 */
1017               BitmapHeader1.Width=ReadBlobLSBShort(image);
1018               BitmapHeader1.Heigth=ReadBlobLSBShort(image);
1019               BitmapHeader1.Depth=ReadBlobLSBShort(image);
1020               BitmapHeader1.HorzRes=ReadBlobLSBShort(image);
1021               BitmapHeader1.VertRes=ReadBlobLSBShort(image);
1022
1023               if(BitmapHeader1.HorzRes && BitmapHeader1.VertRes)
1024                 {
1025                   image->units=PixelsPerCentimeterResolution;
1026                   image->x_resolution=BitmapHeader1.HorzRes/470.0;
1027                   image->y_resolution=BitmapHeader1.VertRes/470.0;
1028                 }
1029               image->columns=BitmapHeader1.Width;
1030               image->rows=BitmapHeader1.Heigth;
1031               bpp=BitmapHeader1.Depth;
1032
1033               goto UnpackRaster;
1034
1035             case 0x0E:  /*Color palette */
1036               WPG_Palette.StartIndex=ReadBlobLSBShort(image);
1037               WPG_Palette.NumOfEntries=ReadBlobLSBShort(image);
1038
1039               image->colors=WPG_Palette.NumOfEntries;
1040               if (!AcquireImageColormap(image,image->colors,exception))
1041                 goto NoMemory;
1042               for (i=WPG_Palette.StartIndex;
1043                    i < (int)WPG_Palette.NumOfEntries; i++)
1044                 {
1045                   image->colormap[i].red=ScaleCharToQuantum((unsigned char)
1046                     ReadBlobByte(image));
1047                   image->colormap[i].green=ScaleCharToQuantum((unsigned char)
1048                     ReadBlobByte(image));
1049                   image->colormap[i].blue=ScaleCharToQuantum((unsigned char)
1050                     ReadBlobByte(image));
1051                 }
1052               break;
1053
1054             case 0x11:  /* Start PS l1 */
1055               if(Rec.RecordLength > 8)
1056                 image=ExtractPostscript(image,image_info,
1057                   TellBlob(image)+8,   /* skip PS header in the wpg */
1058                   (ssize_t) Rec.RecordLength-8,exception);
1059               break;
1060
1061             case 0x14:  /* bitmap type 2 */
1062               BitmapHeader2.RotAngle=ReadBlobLSBShort(image);
1063               BitmapHeader2.LowLeftX=ReadBlobLSBShort(image);
1064               BitmapHeader2.LowLeftY=ReadBlobLSBShort(image);
1065               BitmapHeader2.UpRightX=ReadBlobLSBShort(image);
1066               BitmapHeader2.UpRightY=ReadBlobLSBShort(image);
1067               BitmapHeader2.Width=ReadBlobLSBShort(image);
1068               BitmapHeader2.Heigth=ReadBlobLSBShort(image);
1069               BitmapHeader2.Depth=ReadBlobLSBShort(image);
1070               BitmapHeader2.HorzRes=ReadBlobLSBShort(image);
1071               BitmapHeader2.VertRes=ReadBlobLSBShort(image);
1072
1073               image->units=PixelsPerCentimeterResolution;
1074               image->page.width=(unsigned int)
1075                 ((BitmapHeader2.LowLeftX-BitmapHeader2.UpRightX)/470.0);
1076               image->page.height=(unsigned int)
1077                 ((BitmapHeader2.LowLeftX-BitmapHeader2.UpRightY)/470.0);
1078               image->page.x=(int) (BitmapHeader2.LowLeftX/470.0);
1079               image->page.y=(int) (BitmapHeader2.LowLeftX/470.0);
1080               if(BitmapHeader2.HorzRes && BitmapHeader2.VertRes)
1081                 {
1082                   image->x_resolution=BitmapHeader2.HorzRes/470.0;
1083                   image->y_resolution=BitmapHeader2.VertRes/470.0;
1084                 }
1085               image->columns=BitmapHeader2.Width;
1086               image->rows=BitmapHeader2.Heigth;
1087               bpp=BitmapHeader2.Depth;
1088
1089             UnpackRaster:
1090               if ((image->colors == 0) && (bpp != 24))
1091                 {
1092                   image->colors=one << bpp;
1093                   if (!AcquireImageColormap(image,image->colors,exception))
1094                     {
1095                     NoMemory:
1096                       ThrowReaderException(ResourceLimitError,
1097                         "MemoryAllocationFailed");
1098                     }
1099                   /* printf("Load default colormap \n"); */
1100                   for (i=0; (i < (int) image->colors) && (i < 256); i++)
1101                     {
1102                       image->colormap[i].red=ScaleCharToQuantum(WPG1_Palette[i].Red);
1103                       image->colormap[i].green=ScaleCharToQuantum(WPG1_Palette[i].Green);
1104                       image->colormap[i].blue=ScaleCharToQuantum(WPG1_Palette[i].Blue);
1105                     }
1106                 }
1107               else
1108                 {
1109                   if (bpp < 24)
1110                     if ( (image->colors < (one << bpp)) && (bpp != 24) )
1111                       image->colormap=(PixelInfo *) ResizeQuantumMemory(
1112                         image->colormap,(size_t) (one << bpp),
1113                         sizeof(*image->colormap));
1114                 }
1115
1116               if (bpp == 1)
1117                 {
1118                   if(image->colormap[0].red==0 &&
1119                      image->colormap[0].green==0 &&
1120                      image->colormap[0].blue==0 &&
1121                      image->colormap[1].red==0 &&
1122                      image->colormap[1].green==0 &&
1123                      image->colormap[1].blue==0)
1124                     {  /* fix crippled monochrome palette */
1125                       image->colormap[1].red =
1126                         image->colormap[1].green =
1127                         image->colormap[1].blue = QuantumRange;
1128                     }
1129                 }
1130
1131               if(UnpackWPGRaster(image,bpp) < 0)
1132                 /* The raster cannot be unpacked */
1133                 {
1134                 DecompressionFailed:
1135                   ThrowReaderException(CoderError,"UnableToDecompressImage");
1136                     }
1137
1138               if(Rec.RecType==0x14 && BitmapHeader2.RotAngle!=0 && !image_info->ping)
1139                 {
1140                   /* flop command */
1141                   if(BitmapHeader2.RotAngle & 0x8000)
1142                     {
1143                       rotated_image = FlopImage(image, exception);
1144                       rotated_image->blob = image->blob;
1145                       DuplicateBlob(rotated_image,image);
1146                       (void) RemoveLastImageFromList(&image);
1147                       AppendImageToList(&image,rotated_image);
1148                     }
1149                   /* flip command */
1150                   if(BitmapHeader2.RotAngle & 0x2000)
1151                     {
1152                       rotated_image = FlipImage(image, exception);
1153                       rotated_image->blob = image->blob;
1154                       DuplicateBlob(rotated_image,image);
1155                       (void) RemoveLastImageFromList(&image);
1156                       AppendImageToList(&image,rotated_image);
1157                     }
1158
1159       /* rotate command */
1160                   if(BitmapHeader2.RotAngle & 0x0FFF)
1161                     {
1162                       rotated_image = RotateImage(image, (BitmapHeader2.RotAngle & 0x0FFF), exception);
1163                       rotated_image->blob = image->blob;
1164                       DuplicateBlob(rotated_image,image);
1165                       (void) RemoveLastImageFromList(&image);
1166                       AppendImageToList(&image,rotated_image);
1167                     }
1168                 }
1169
1170               /* Allocate next image structure. */
1171               AcquireNextImage(image_info,image,exception);
1172               image->depth=8;
1173               if (image->next == (Image *) NULL)
1174                 goto Finish;
1175               image=SyncNextImageInList(image);
1176               image->columns=image->rows=0;
1177               image->colors=0;
1178               break;
1179
1180             case 0x1B:  /* Postscript l2 */
1181               if(Rec.RecordLength>0x3C)
1182                 image=ExtractPostscript(image,image_info,
1183                   TellBlob(image)+0x3C,   /* skip PS l2 header in the wpg */
1184                   (ssize_t) Rec.RecordLength-0x3C,exception);
1185               break;
1186             }
1187         }
1188       break;
1189
1190     case 2:  /* WPG level 2 */
1191       (void) memset(CTM,0,sizeof(CTM));
1192       StartWPG.PosSizePrecision = 0;
1193       while(!EOFBlob(image)) /* object parser loop */
1194         {
1195           (void) SeekBlob(image,Header.DataOffset,SEEK_SET);
1196           if(EOFBlob(image))
1197             break;
1198
1199           Rec2.Class=(i=ReadBlobByte(image));
1200           if(i==EOF)
1201             break;
1202           Rec2.RecType=(i=ReadBlobByte(image));
1203           if(i==EOF)
1204             break;
1205           Rd_WP_DWORD(image,&Rec2.Extension);
1206           Rd_WP_DWORD(image,&Rec2.RecordLength);
1207           if(EOFBlob(image))
1208             break;
1209
1210           Header.DataOffset=TellBlob(image)+Rec2.RecordLength;
1211
1212           switch(Rec2.RecType)
1213             {
1214       case 1:
1215               StartWPG.HorizontalUnits=ReadBlobLSBShort(image);
1216               StartWPG.VerticalUnits=ReadBlobLSBShort(image);
1217               StartWPG.PosSizePrecision=ReadBlobByte(image);
1218               break;
1219             case 0x0C:    /* Color palette */
1220               WPG_Palette.StartIndex=ReadBlobLSBShort(image);
1221               WPG_Palette.NumOfEntries=ReadBlobLSBShort(image);
1222
1223               image->colors=WPG_Palette.NumOfEntries;
1224               if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
1225                 ThrowReaderException(ResourceLimitError,
1226                   "MemoryAllocationFailed");
1227               for (i=WPG_Palette.StartIndex;
1228                    i < (int)WPG_Palette.NumOfEntries; i++)
1229                 {
1230                   image->colormap[i].red=ScaleCharToQuantum((char)
1231                     ReadBlobByte(image));
1232                   image->colormap[i].green=ScaleCharToQuantum((char)
1233                     ReadBlobByte(image));
1234                   image->colormap[i].blue=ScaleCharToQuantum((char)
1235                     ReadBlobByte(image));
1236                   (void) ReadBlobByte(image);   /*Opacity??*/
1237                 }
1238               break;
1239             case 0x0E:
1240               Bitmap2Header1.Width=ReadBlobLSBShort(image);
1241               Bitmap2Header1.Heigth=ReadBlobLSBShort(image);
1242               Bitmap2Header1.Depth=ReadBlobByte(image);
1243               Bitmap2Header1.Compression=ReadBlobByte(image);
1244
1245               if(Bitmap2Header1.Compression > 1)
1246                 continue; /*Unknown compression method */
1247               switch(Bitmap2Header1.Depth)
1248                 {
1249                 case 1:
1250                   bpp=1;
1251                   break;
1252                 case 2:
1253                   bpp=2;
1254                   break;
1255                 case 3:
1256                   bpp=4;
1257                   break;
1258                 case 4:
1259                   bpp=8;
1260                   break;
1261                 case 8:
1262                   bpp=24;
1263                   break;
1264                 default:
1265                   continue;  /*Ignore raster with unknown depth*/
1266                 }
1267               image->columns=Bitmap2Header1.Width;
1268               image->rows=Bitmap2Header1.Heigth;
1269
1270               if ((image->colors == 0) && (bpp != 24))
1271                 {
1272                   size_t
1273                     one;
1274
1275                   one=1;
1276                   image->colors=one << bpp;
1277                   if (!AcquireImageColormap(image,image->colors,exception))
1278                     goto NoMemory;
1279                 }
1280               else
1281                 {
1282                   if(bpp < 24)
1283                     if( image->colors<(one << bpp) && bpp!=24 )
1284                       image->colormap=(PixelInfo *) ResizeQuantumMemory(
1285                        image->colormap,(size_t) (one << bpp),
1286                        sizeof(*image->colormap));
1287                 }
1288
1289
1290               switch(Bitmap2Header1.Compression)
1291                 {
1292                 case 0:    /*Uncompressed raster*/
1293                   {
1294                     ldblk=(ssize_t) ((bpp*image->columns+7)/8);
1295                     BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t)
1296                       ldblk,sizeof(*BImgBuff));
1297                     if (BImgBuff == (unsigned char *) NULL)
1298                       goto NoMemory;
1299
1300                     for(i=0; i< (ssize_t) image->rows; i++)
1301                       {
1302                         (void) ReadBlob(image,ldblk,BImgBuff);
1303                         InsertRow(BImgBuff,i,image,bpp);
1304                       }
1305
1306                     if(BImgBuff)
1307                       BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);;
1308                     break;
1309                   }
1310                 case 1:    /*RLE for WPG2 */
1311                   {
1312                     if( UnpackWPG2Raster(image,bpp) < 0)
1313                       goto DecompressionFailed;
1314                     break;
1315                   }
1316                 }
1317
1318               if(CTM[0][0]<0 && !image_info->ping)
1319     {    /*?? RotAngle=360-RotAngle;*/
1320       rotated_image = FlopImage(image, exception);
1321       rotated_image->blob = image->blob;
1322       DuplicateBlob(rotated_image,image);
1323       (void) RemoveLastImageFromList(&image);
1324       AppendImageToList(&image,rotated_image);
1325                   /* Try to change CTM according to Flip - I am not sure, must be checked.
1326                      Tx(0,0)=-1;      Tx(1,0)=0;   Tx(2,0)=0;
1327                      Tx(0,1)= 0;      Tx(1,1)=1;   Tx(2,1)=0;
1328                      Tx(0,2)=(WPG._2Rect.X_ur+WPG._2Rect.X_ll);
1329                      Tx(1,2)=0;   Tx(2,2)=1; */
1330                 }
1331               if(CTM[1][1]<0 && !image_info->ping)
1332     {    /*?? RotAngle=360-RotAngle;*/
1333       rotated_image = FlipImage(image, exception);
1334       rotated_image->blob = image->blob;
1335       DuplicateBlob(rotated_image,image);
1336       (void) RemoveLastImageFromList(&image);
1337       AppendImageToList(&image,rotated_image);
1338                   /* Try to change CTM according to Flip - I am not sure, must be checked.
1339                      float_matrix Tx(3,3);
1340                      Tx(0,0)= 1;   Tx(1,0)= 0;   Tx(2,0)=0;
1341                      Tx(0,1)= 0;   Tx(1,1)=-1;   Tx(2,1)=0;
1342                      Tx(0,2)= 0;   Tx(1,2)=(WPG._2Rect.Y_ur+WPG._2Rect.Y_ll);
1343                      Tx(2,2)=1; */
1344     }
1345
1346
1347               /* Allocate next image structure. */
1348               AcquireNextImage(image_info,image,exception);
1349               image->depth=8;
1350               if (image->next == (Image *) NULL)
1351                 goto Finish;
1352               image=SyncNextImageInList(image);
1353               image->columns=image->rows=1;
1354               image->colors=0;
1355               break;
1356
1357             case 0x12:  /* Postscript WPG2*/
1358         i=ReadBlobLSBShort(image);
1359               if(Rec2.RecordLength > (unsigned int) i)
1360                 image=ExtractPostscript(image,image_info,
1361                   TellBlob(image)+i,    /*skip PS header in the wpg2*/
1362                   (ssize_t) (Rec2.RecordLength-i-2),exception);
1363               break;
1364
1365       case 0x1B:          /*bitmap rectangle*/
1366               WPG2Flags = LoadWPG2Flags(image,StartWPG.PosSizePrecision,NULL,&CTM);
1367               (void) WPG2Flags;
1368               break;
1369             }
1370         }
1371
1372       break;
1373
1374     default:
1375       {
1376          ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported");
1377       }
1378    }
1379
1380  Finish:
1381   (void) CloseBlob(image);
1382
1383   {
1384     Image
1385       *p;
1386
1387     ssize_t
1388       scene=0;
1389
1390     /*
1391       Rewind list, removing any empty images while rewinding.
1392     */
1393     p=image;
1394     image=NULL;
1395     while (p != (Image *) NULL)
1396       {
1397         Image *tmp=p;
1398         if ((p->rows == 0) || (p->columns == 0)) {
1399           p=p->previous;
1400           DeleteImageFromList(&tmp);
1401         } else {
1402           image=p;
1403           p=p->previous;
1404         }
1405       }
1406     /*
1407       Fix scene numbers.
1408     */
1409     for (p=image; p != (Image *) NULL; p=p->next)
1410       p->scene=(size_t) scene++;
1411   }
1412   if (image == (Image *) NULL)
1413     ThrowReaderException(CorruptImageError,
1414       "ImageFileDoesNotContainAnyImageData");
1415   return(image);
1416 }
1417 \f
1418 /*
1419 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1420 %                                                                             %
1421 %                                                                             %
1422 %                                                                             %
1423 %   R e g i s t e r W P G I m a g e                                           %
1424 %                                                                             %
1425 %                                                                             %
1426 %                                                                             %
1427 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1428 %
1429 %  Method RegisterWPGImage adds attributes for the WPG image format to
1430 %  the list of supported formats.  The attributes include the image format
1431 %  tag, a method to read and/or write the format, whether the format
1432 %  supports the saving of more than one frame to the same file or blob,
1433 %  whether the format supports native in-memory I/O, and a brief
1434 %  description of the format.
1435 %
1436 %  The format of the RegisterWPGImage method is:
1437 %
1438 %      size_t RegisterWPGImage(void)
1439 %
1440 */
1441 ModuleExport size_t RegisterWPGImage(void)
1442 {
1443   MagickInfo
1444     *entry;
1445
1446   entry=SetMagickInfo("WPG");
1447   entry->decoder=(DecodeImageHandler *) ReadWPGImage;
1448   entry->magick=(IsImageFormatHandler *) IsWPG;
1449   entry->description=AcquireString("Word Perfect Graphics");
1450   entry->module=ConstantString("WPG");
1451   entry->seekable_stream=MagickTrue;
1452   (void) RegisterMagickInfo(entry);
1453   return(MagickImageCoderSignature);
1454 }
1455 \f
1456 /*
1457 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1458 %                                                                             %
1459 %                                                                             %
1460 %                                                                             %
1461 %   U n r e g i s t e r W P G I m a g e                                       %
1462 %                                                                             %
1463 %                                                                             %
1464 %                                                                             %
1465 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1466 %
1467 %  Method UnregisterWPGImage removes format registrations made by the
1468 %  WPG module from the list of supported formats.
1469 %
1470 %  The format of the UnregisterWPGImage method is:
1471 %
1472 %      UnregisterWPGImage(void)
1473 %
1474 */
1475 ModuleExport void UnregisterWPGImage(void)
1476 {
1477   (void) UnregisterMagickInfo("WPG");
1478 }