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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                            PPPP    CCCC  L                                  %
   7 %                            P   P  C      L                                  %
   8 %                            PPPP   C      L                                  %
   9 %                            P      C      L                                  %
  10 %                            P       CCCC  LLLLL                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                      Read/Write HP PCL Printer Format                       %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                   Cristy                                    %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/artifact.h"
  44 #include "MagickCore/attribute.h"
  45 #include "MagickCore/blob.h"
  46 #include "MagickCore/blob-private.h"
  47 #include "MagickCore/cache.h"
  48 #include "MagickCore/color.h"
  49 #include "MagickCore/color-private.h"
  50 #include "MagickCore/colorspace.h"
  51 #include "MagickCore/colorspace-private.h"
  52 #include "MagickCore/constitute.h"
  53 #include "MagickCore/delegate.h"
  54 #include "MagickCore/draw.h"
  55 #include "MagickCore/exception.h"
  56 #include "MagickCore/exception-private.h"
  57 #include "MagickCore/geometry.h"
  58 #include "MagickCore/image.h"
  59 #include "MagickCore/image-private.h"
  60 #include "MagickCore/list.h"
  61 #include "MagickCore/magick.h"
  62 #include "MagickCore/memory_.h"
  63 #include "MagickCore/monitor.h"
  64 #include "MagickCore/monitor-private.h"
  65 #include "MagickCore/option.h"
  66 #include "MagickCore/pixel-accessor.h"
  67 #include "MagickCore/profile.h"
  68 #include "MagickCore/property.h"
  69 #include "MagickCore/resource_.h"
  70 #include "MagickCore/quantum-private.h"
  71 #include "MagickCore/static.h"
  72 #include "MagickCore/string_.h"
  73 #include "MagickCore/module.h"
  74 #include "MagickCore/token.h"
  75 #include "MagickCore/transform.h"
  76 #include "MagickCore/utility.h"
  77 \f
  78 /*
  79   Forward declarations.
  80 */
  81 static MagickBooleanType
  82   WritePCLImage(const ImageInfo *,Image *,ExceptionInfo *);
  83 \f
  84 /*
  85 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  86 %                                                                             %
  87 %                                                                             %
  88 %                                                                             %
  89 %   I s P C L                                                                 %
  90 %                                                                             %
  91 %                                                                             %
  92 %                                                                             %
  93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  94 %
  95 %  IsPCL() returns MagickTrue if the image format type, identified by the
  96 %  magick string, is PCL.
  97 %
  98 %  The format of the IsPCL method is:
  99 %
 100 %      MagickBooleanType IsPCL(const unsigned char *magick,const size_t length)
 101 %
 102 %  A description of each parameter follows:
 103 %
 104 %    o magick: compare image format pattern against these bytes.
 105 %
 106 %    o length: Specifies the length of the magick string.
 107 %
 108 */
 109 static MagickBooleanType IsPCL(const unsigned char *magick,const size_t length)
 110 {
 111   if (length < 4)
 112     return(MagickFalse);
 113   if (memcmp(magick,"\033E\033&",4) == 0)
 114     return(MagickFalse);
 115   if (memcmp(magick,"\033E\033",3) == 0)
 116     return(MagickTrue);
 117   return(MagickFalse);
 118 }
 119 \f
 120 /*
 121 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 122 %                                                                             %
 123 %                                                                             %
 124 %                                                                             %
 125 %   R e a d P C L I m a g e                                                   %
 126 %                                                                             %
 127 %                                                                             %
 128 %                                                                             %
 129 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 130 %
 131 %  ReadPCLImage() reads a Printer Control Language image file and returns it.
 132 %  It allocates the memory necessary for the new Image structure and returns a
 133 %  pointer to the new image.
 134 %
 135 %  The format of the ReadPCLImage method is:
 136 %
 137 %      Image *ReadPCLImage(const ImageInfo *image_info,ExceptionInfo *exception)
 138 %
 139 %  A description of each parameter follows:
 140 %
 141 %    o image_info: the image info.
 142 %
 143 %    o exception: return any errors or warnings in this structure.
 144 %
 145 */
 146 static Image *ReadPCLImage(const ImageInfo *image_info,ExceptionInfo *exception)
 147 {
 148 #define CropBox  "CropBox"
 149 #define DeviceCMYK  "DeviceCMYK"
 150 #define MediaBox  "MediaBox"
 151 #define RenderPCLText  "  Rendering PCL...  "
 152
 153   char
 154     command[MagickPathExtent],
 155     *density,
 156     filename[MagickPathExtent],
 157     geometry[MagickPathExtent],
 158     *options,
 159     input_filename[MagickPathExtent];
 160
 161   const DelegateInfo
 162     *delegate_info;
 163
 164   Image
 165     *image,
 166     *next_image;
 167
 168   ImageInfo
 169     *read_info;
 170
 171   MagickBooleanType
 172     cmyk,
 173     status;
 174
 175   PointInfo
 176     delta;
 177
 178   RectangleInfo
 179     bounding_box,
 180     page;
 181
 182   register char
 183     *p;
 184
 185   register ssize_t
 186     c;
 187
 188   SegmentInfo
 189     bounds;
 190
 191   size_t
 192     height,
 193     width;
 194
 195   ssize_t
 196     count;
 197
 198   assert(image_info != (const ImageInfo *) NULL);
 199   assert(image_info->signature == MagickCoreSignature);
 200   if (image_info->debug != MagickFalse)
 201     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 202       image_info->filename);
 203   assert(exception != (ExceptionInfo *) NULL);
 204   assert(exception->signature == MagickCoreSignature);
 205   /*
 206     Open image file.
 207   */
 208   image=AcquireImage(image_info,exception);
 209   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 210   if (status == MagickFalse)
 211     {
 212       image=DestroyImageList(image);
 213       return((Image *) NULL);
 214     }
 215   status=AcquireUniqueSymbolicLink(image_info->filename,input_filename);
 216   if (status == MagickFalse)
 217     {
 218       ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile",
 219         image_info->filename);
 220       image=DestroyImageList(image);
 221       return((Image *) NULL);
 222     }
 223   /*
 224     Set the page density.
 225   */
 226   delta.x=DefaultResolution;
 227   delta.y=DefaultResolution;
 228   if ((image->resolution.x == 0.0) || (image->resolution.y == 0.0))
 229     {
 230       GeometryInfo
 231         geometry_info;
 232
 233       MagickStatusType
 234         flags;
 235
 236       flags=ParseGeometry(PSDensityGeometry,&geometry_info);
 237       image->resolution.x=geometry_info.rho;
 238       image->resolution.y=geometry_info.sigma;
 239       if ((flags & SigmaValue) == 0)
 240         image->resolution.y=image->resolution.x;
 241     }
 242   /*
 243     Determine page geometry from the PCL media box.
 244   */
 245   cmyk=image->colorspace == CMYKColorspace ? MagickTrue : MagickFalse;
 246   count=0;
 247   (void) ResetMagickMemory(&bounding_box,0,sizeof(bounding_box));
 248   (void) ResetMagickMemory(&bounds,0,sizeof(bounds));
 249   (void) ResetMagickMemory(&page,0,sizeof(page));
 250   (void) ResetMagickMemory(command,0,sizeof(command));
 251   p=command;
 252   for (c=ReadBlobByte(image); c != EOF; c=ReadBlobByte(image))
 253   {
 254     if (image_info->page != (char *) NULL)
 255       continue;
 256     /*
 257       Note PCL elements.
 258     */
 259     *p++=(char) c;
 260     if ((c != (int) '/') && (c != '\n') &&
 261         ((size_t) (p-command) < (MagickPathExtent-1)))
 262       continue;
 263     *p='\0';
 264     p=command;
 265     /*
 266       Is this a CMYK document?
 267     */
 268     if (LocaleNCompare(DeviceCMYK,command,strlen(DeviceCMYK)) == 0)
 269       cmyk=MagickTrue;
 270     if (LocaleNCompare(CropBox,command,strlen(CropBox)) == 0)
 271       {
 272         /*
 273           Note region defined by crop box.
 274         */
 275         count=(ssize_t) sscanf(command,"CropBox [%lf %lf %lf %lf",
 276           &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
 277         if (count != 4)
 278           count=(ssize_t) sscanf(command,"CropBox[%lf %lf %lf %lf",
 279             &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
 280       }
 281     if (LocaleNCompare(MediaBox,command,strlen(MediaBox)) == 0)
 282       {
 283         /*
 284           Note region defined by media box.
 285         */
 286         count=(ssize_t) sscanf(command,"MediaBox [%lf %lf %lf %lf",
 287           &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
 288         if (count != 4)
 289           count=(ssize_t) sscanf(command,"MediaBox[%lf %lf %lf %lf",
 290             &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
 291       }
 292     if (count != 4)
 293       continue;
 294     /*
 295       Set PCL render geometry.
 296     */
 297     width=(size_t) floor(bounds.x2-bounds.x1+0.5);
 298     height=(size_t) floor(bounds.y2-bounds.y1+0.5);
 299     if (width > page.width)
 300       page.width=width;
 301     if (height > page.height)
 302       page.height=height;
 303   }
 304   (void) CloseBlob(image);
 305   /*
 306     Render PCL with the GhostPCL delegate.
 307   */
 308   if ((page.width == 0) || (page.height == 0))
 309     (void) ParseAbsoluteGeometry(PSPageGeometry,&page);
 310   if (image_info->page != (char *) NULL)
 311     (void) ParseAbsoluteGeometry(image_info->page,&page);
 312   (void) FormatLocaleString(geometry,MagickPathExtent,"%.20gx%.20g",(double)
 313     page.width,(double) page.height);
 314   if (image_info->monochrome != MagickFalse)
 315     delegate_info=GetDelegateInfo("pcl:mono",(char *) NULL,exception);
 316   else
 317      if (cmyk != MagickFalse)
 318        delegate_info=GetDelegateInfo("pcl:cmyk",(char *) NULL,exception);
 319      else
 320        delegate_info=GetDelegateInfo("pcl:color",(char *) NULL,exception);
 321   if (delegate_info == (const DelegateInfo *) NULL)
 322     return((Image *) NULL);
 323   if ((page.width == 0) || (page.height == 0))
 324     (void) ParseAbsoluteGeometry(PSPageGeometry,&page);
 325   if (image_info->page != (char *) NULL)
 326     (void) ParseAbsoluteGeometry(image_info->page,&page);
 327   density=AcquireString("");
 328   options=AcquireString("");
 329   (void) FormatLocaleString(density,MagickPathExtent,"%gx%g",image->resolution.x,
 330     image->resolution.y);
 331   page.width=(size_t) floor(page.width*image->resolution.x/delta.x+0.5);
 332   page.height=(size_t) floor(page.height*image->resolution.y/delta.y+0.5);
 333   (void) FormatLocaleString(options,MagickPathExtent,"-g%.20gx%.20g ",(double)
 334      page.width,(double) page.height);
 335   image=DestroyImage(image);
 336   read_info=CloneImageInfo(image_info);
 337   *read_info->magick='\0';
 338   if (read_info->number_scenes != 0)
 339     {
 340       if (read_info->number_scenes != 1)
 341         (void) FormatLocaleString(options,MagickPathExtent,"-dLastPage=%.20g",
 342           (double) (read_info->scene+read_info->number_scenes));
 343       else
 344         (void) FormatLocaleString(options,MagickPathExtent,
 345           "-dFirstPage=%.20g -dLastPage=%.20g",(double) read_info->scene+1,
 346           (double) (read_info->scene+read_info->number_scenes));
 347       read_info->number_scenes=0;
 348       if (read_info->scenes != (char *) NULL)
 349         *read_info->scenes='\0';
 350     }
 351   (void) CopyMagickString(filename,read_info->filename,MagickPathExtent);
 352   (void) AcquireUniqueFilename(read_info->filename);
 353   (void) FormatLocaleString(command,MagickPathExtent,
 354     GetDelegateCommands(delegate_info),
 355     read_info->antialias != MagickFalse ? 4 : 1,
 356     read_info->antialias != MagickFalse ? 4 : 1,density,options,
 357     read_info->filename,input_filename);
 358   options=DestroyString(options);
 359   density=DestroyString(density);
 360   status=ExternalDelegateCommand(MagickFalse,read_info->verbose,command,
 361     (char *) NULL,exception) != 0 ? MagickTrue : MagickFalse;
 362   image=ReadImage(read_info,exception);
 363   (void) RelinquishUniqueFileResource(read_info->filename);
 364   (void) RelinquishUniqueFileResource(input_filename);
 365   read_info=DestroyImageInfo(read_info);
 366   if (image == (Image *) NULL)
 367     ThrowReaderException(DelegateError,"PCLDelegateFailed");
 368   if (LocaleCompare(image->magick,"BMP") == 0)
 369     {
 370       Image
 371         *cmyk_image;
 372
 373       cmyk_image=ConsolidateCMYKImages(image,exception);
 374       if (cmyk_image != (Image *) NULL)
 375         {
 376           image=DestroyImageList(image);
 377           image=cmyk_image;
 378         }
 379     }
 380   do
 381   {
 382     (void) CopyMagickString(image->filename,filename,MagickPathExtent);
 383     image->page=page;
 384     next_image=SyncNextImageInList(image);
 385     if (next_image != (Image *) NULL)
 386       image=next_image;
 387   } while (next_image != (Image *) NULL);
 388   return(GetFirstImageInList(image));
 389 }
 390 \f
 391 /*
 392 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 393 %                                                                             %
 394 %                                                                             %
 395 %                                                                             %
 396 %   R e g i s t e r P C L I m a g e                                           %
 397 %                                                                             %
 398 %                                                                             %
 399 %                                                                             %
 400 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 401 %
 402 %  RegisterPCLImage() adds attributes for the PCL image format to
 403 %  the list of supported formats.  The attributes include the image format
 404 %  tag, a method to read and/or write the format, whether the format
 405 %  supports the saving of more than one frame to the i file or blob,
 406 %  whether the format supports native in-memory I/O, and a brief
 407 %  description of the format.
 408 %
 409 %  The format of the RegisterPCLImage method is:
 410 %
 411 %      size_t RegisterPCLImage(void)
 412 %
 413 */
 414 ModuleExport size_t RegisterPCLImage(void)
 415 {
 416   MagickInfo
 417     *entry;
 418
 419   entry=AcquireMagickInfo("PCL","PCL","Printer Control Language");
 420   entry->decoder=(DecodeImageHandler *) ReadPCLImage;
 421   entry->encoder=(EncodeImageHandler *) WritePCLImage;
 422   entry->magick=(IsImageFormatHandler *) IsPCL;
 423   entry->flags^=CoderBlobSupportFlag;
 424   entry->flags^=CoderDecoderThreadSupportFlag;
 425   entry->flags|=CoderSeekableStreamFlag;
 426   (void) RegisterMagickInfo(entry);
 427   return(MagickImageCoderSignature);
 428 }
 429 \f
 430 /*
 431 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 432 %                                                                             %
 433 %                                                                             %
 434 %                                                                             %
 435 %   U n r e g i s t e r P C L I m a g e                                       %
 436 %                                                                             %
 437 %                                                                             %
 438 %                                                                             %
 439 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 440 %
 441 %  UnregisterPCLImage() removes format registrations made by the PCL module
 442 %  from the list of supported formats.
 443 %
 444 %  The format of the UnregisterPCLImage method is:
 445 %
 446 %      UnregisterPCLImage(void)
 447 %
 448 */
 449 ModuleExport void UnregisterPCLImage(void)
 450 {
 451   (void) UnregisterMagickInfo("PCL");
 452 }
 453 \f
 454 /*
 455 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 456 %                                                                             %
 457 %                                                                             %
 458 %                                                                             %
 459 %   W r i t e P C L I m a g e                                                 %
 460 %                                                                             %
 461 %                                                                             %
 462 %                                                                             %
 463 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 464 %
 465 %  WritePCLImage() writes an image in the Page Control Language encoded
 466 %  image format.
 467 %
 468 %  The format of the WritePCLImage method is:
 469 %
 470 %      MagickBooleanType WritePCLImage(const ImageInfo *image_info,
 471 %        Image *image,ExceptionInfo *exception)
 472 %
 473 %  A description of each parameter follows.
 474 %
 475 %    o image_info: the image info.
 476 %
 477 %    o image:  The image.
 478 %
 479 %    o exception: return any errors or warnings in this structure.
 480 %
 481 */
 482
 483 static size_t PCLDeltaCompressImage(const size_t length,
 484   const unsigned char *previous_pixels,const unsigned char *pixels,
 485   unsigned char *compress_pixels)
 486 {
 487   int
 488     delta,
 489     j,
 490     replacement;
 491
 492   register ssize_t
 493     i,
 494     x;
 495
 496   register unsigned char
 497     *q;
 498
 499   q=compress_pixels;
 500   for (x=0; x < (ssize_t) length; )
 501   {
 502     j=0;
 503     for (i=0; x < (ssize_t) length; x++)
 504     {
 505       if (*pixels++ != *previous_pixels++)
 506         {
 507           i=1;
 508           break;
 509         }
 510       j++;
 511     }
 512     while (x < (ssize_t) length)
 513     {
 514       x++;
 515       if (*pixels == *previous_pixels)
 516         break;
 517       i++;
 518       previous_pixels++;
 519       pixels++;
 520     }
 521     if (i == 0)
 522       break;
 523     replacement=j >= 31 ? 31 : j;
 524     j-=replacement;
 525     delta=i >= 8 ? 8 : i;
 526     *q++=(unsigned char) (((delta-1) << 5) | replacement);
 527     if (replacement == 31)
 528       {
 529         for (replacement=255; j != 0; )
 530         {
 531           if (replacement > j)
 532             replacement=j;
 533           *q++=(unsigned char) replacement;
 534           j-=replacement;
 535         }
 536         if (replacement == 255)
 537           *q++='\0';
 538       }
 539     for (pixels-=i; i != 0; )
 540     {
 541       for (i-=delta; delta != 0; delta--)
 542         *q++=(*pixels++);
 543       if (i == 0)
 544         break;
 545       delta=i;
 546       if (i >= 8)
 547         delta=8;
 548       *q++=(unsigned char) ((delta-1) << 5);
 549     }
 550   }
 551   return((size_t) (q-compress_pixels));
 552 }
 553
 554 static size_t PCLPackbitsCompressImage(const size_t length,
 555   const unsigned char *pixels,unsigned char *compress_pixels)
 556 {
 557   int
 558     count;
 559
 560   register ssize_t
 561     x;
 562
 563   register unsigned char
 564     *q;
 565
 566   ssize_t
 567     j;
 568
 569   unsigned char
 570     packbits[128];
 571
 572   /*
 573     Compress pixels with Packbits encoding.
 574   */
 575   q=compress_pixels;
 576   for (x=(ssize_t) length; x != 0; )
 577   {
 578     switch (x)
 579     {
 580       case 1:
 581       {
 582         x--;
 583         *q++=0;
 584         *q++=(*pixels);
 585         break;
 586       }
 587       case 2:
 588       {
 589         x-=2;
 590         *q++=1;
 591         *q++=(*pixels);
 592         *q++=pixels[1];
 593         break;
 594       }
 595       case 3:
 596       {
 597         x-=3;
 598         if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
 599           {
 600             *q++=(unsigned char) ((256-3)+1);
 601             *q++=(*pixels);
 602             break;
 603           }
 604         *q++=2;
 605         *q++=(*pixels);
 606         *q++=pixels[1];
 607         *q++=pixels[2];
 608         break;
 609       }
 610       default:
 611       {
 612         if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
 613           {
 614             /*
 615               Packed run.
 616             */
 617             count=3;
 618             while (((ssize_t) count < x) && (*pixels == *(pixels+count)))
 619             {
 620               count++;
 621               if (count >= 127)
 622                 break;
 623             }
 624             x-=count;
 625             *q++=(unsigned char) ((256-count)+1);
 626             *q++=(*pixels);
 627             pixels+=count;
 628             break;
 629           }
 630         /*
 631           Literal run.
 632         */
 633         count=0;
 634         while ((*(pixels+count) != *(pixels+count+1)) ||
 635                (*(pixels+count+1) != *(pixels+count+2)))
 636         {
 637           packbits[count+1]=pixels[count];
 638           count++;
 639           if (((ssize_t) count >= (x-3)) || (count >= 127))
 640             break;
 641         }
 642         x-=count;
 643         *packbits=(unsigned char) (count-1);
 644         for (j=0; j <= (ssize_t) count; j++)
 645           *q++=packbits[j];
 646         pixels+=count;
 647         break;
 648       }
 649     }
 650   }
 651   *q++=128; /* EOD marker */
 652   return((size_t) (q-compress_pixels));
 653 }
 654
 655 static MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image,
 656   ExceptionInfo *exception)
 657 {
 658   char
 659     buffer[MagickPathExtent];
 660
 661   CompressionType
 662     compression;
 663
 664   const char
 665     *option;
 666
 667   MagickBooleanType
 668     status;
 669
 670   MagickOffsetType
 671     scene;
 672
 673   register const Quantum *p;
 674
 675   register ssize_t i, x;
 676
 677   register unsigned char *q;
 678
 679   size_t
 680     density,
 681     length,
 682     one,
 683     packets;
 684
 685   ssize_t
 686     y;
 687
 688   unsigned char
 689     bits_per_pixel,
 690     *compress_pixels,
 691     *pixels,
 692     *previous_pixels;
 693
 694   /*
 695     Open output image file.
 696   */
 697   assert(image_info != (const ImageInfo *) NULL);
 698   assert(image_info->signature == MagickCoreSignature);
 699   assert(image != (Image *) NULL);
 700   assert(image->signature == MagickCoreSignature);
 701   if (image->debug != MagickFalse)
 702     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 703   assert(exception != (ExceptionInfo *) NULL);
 704   assert(exception->signature == MagickCoreSignature);
 705   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 706   if (status == MagickFalse)
 707     return(status);
 708   density=75;
 709   if (image_info->density != (char *) NULL)
 710     {
 711       GeometryInfo
 712         geometry;
 713
 714       (void) ParseGeometry(image_info->density,&geometry);
 715       density=(size_t) geometry.rho;
 716     }
 717   scene=0;
 718   one=1;
 719   do
 720   {
 721     /*
 722       Initialize the printer.
 723     */
 724     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 725     (void) WriteBlobString(image,"\033E");  /* printer reset */
 726     (void) WriteBlobString(image,"\033*r3F");  /* set presentation mode */
 727     (void) FormatLocaleString(buffer,MagickPathExtent,"\033*r%.20gs%.20gT",
 728       (double) image->columns,(double) image->rows);
 729     (void) WriteBlobString(image,buffer);
 730     (void) FormatLocaleString(buffer,MagickPathExtent,"\033*t%.20gR",(double)
 731       density);
 732     (void) WriteBlobString(image,buffer);
 733     (void) WriteBlobString(image,"\033&l0E");  /* top margin 0 */
 734     if (SetImageMonochrome(image,exception) != MagickFalse)
 735       {
 736         /*
 737           Monochrome image: use default printer monochrome setup.
 738         */
 739         bits_per_pixel=1;
 740       }
 741     else
 742       if (image->storage_class == DirectClass)
 743         {
 744           /*
 745             DirectClass image.
 746           */
 747           bits_per_pixel=24;
 748           (void) WriteBlobString(image,"\033*v6W"); /* set color mode */
 749           (void) WriteBlobByte(image,0); /* RGB */
 750           (void) WriteBlobByte(image,3); /* direct by pixel */
 751           (void) WriteBlobByte(image,0); /* bits per index (ignored) */
 752           (void) WriteBlobByte(image,8); /* bits per red component */
 753           (void) WriteBlobByte(image,8); /* bits per green component */
 754           (void) WriteBlobByte(image,8); /* bits per blue component */
 755         }
 756       else
 757         {
 758           /*
 759             Colormapped image.
 760           */
 761           bits_per_pixel=8;
 762           (void) WriteBlobString(image,"\033*v6W"); /* set color mode... */
 763           (void) WriteBlobByte(image,0); /* RGB */
 764           (void) WriteBlobByte(image,1); /* indexed by pixel */
 765           (void) WriteBlobByte(image,bits_per_pixel); /* bits per index */
 766           (void) WriteBlobByte(image,8); /* bits per red component */
 767           (void) WriteBlobByte(image,8); /* bits per green component */
 768           (void) WriteBlobByte(image,8); /* bits per blue component */
 769           for (i=0; i < (ssize_t) image->colors; i++)
 770           {
 771             (void) FormatLocaleString(buffer,MagickPathExtent,
 772               "\033*v%da%db%dc%.20gI",
 773               ScaleQuantumToChar(image->colormap[i].red),
 774               ScaleQuantumToChar(image->colormap[i].green),
 775               ScaleQuantumToChar(image->colormap[i].blue),(double) i);
 776             (void) WriteBlobString(image,buffer);
 777           }
 778           for (one=1; i < (ssize_t) (one << bits_per_pixel); i++)
 779           {
 780             (void) FormatLocaleString(buffer,MagickPathExtent,"\033*v%.20gI",
 781               (double) i);
 782             (void) WriteBlobString(image,buffer);
 783           }
 784         }
 785     option=GetImageOption(image_info,"pcl:fit-to-page");
 786     if (IsStringTrue(option) != MagickFalse)
 787       (void) WriteBlobString(image,"\033*r3A");
 788     else
 789       (void) WriteBlobString(image,"\033*r1A");  /* start raster graphics */
 790     (void) WriteBlobString(image,"\033*b0Y");  /* set y offset */
 791     length=(image->columns*bits_per_pixel+7)/8;
 792     pixels=(unsigned char *) AcquireQuantumMemory(length+1,sizeof(*pixels));
 793     if (pixels == (unsigned char *) NULL)
 794       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 795     (void) ResetMagickMemory(pixels,0,(length+1)*sizeof(*pixels));
 796     compress_pixels=(unsigned char *) NULL;
 797     previous_pixels=(unsigned char *) NULL;
 798
 799     compression=UndefinedCompression;
 800     if (image_info->compression != UndefinedCompression)
 801       compression=image_info->compression;
 802     switch (compression)
 803     {
 804       case NoCompression:
 805       {
 806         (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b0M");
 807         (void) WriteBlobString(image,buffer);
 808         break;
 809       }
 810       case RLECompression:
 811       {
 812         compress_pixels=(unsigned char *) AcquireQuantumMemory(length+256,
 813           sizeof(*compress_pixels));
 814         if (compress_pixels == (unsigned char *) NULL)
 815           {
 816             pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 817             ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 818           }
 819         (void) ResetMagickMemory(compress_pixels,0,(length+256)*
 820           sizeof(*compress_pixels));
 821         (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b2M");
 822         (void) WriteBlobString(image,buffer);
 823         break;
 824       }
 825       default:
 826       {
 827         compress_pixels=(unsigned char *) AcquireQuantumMemory(3*length+256,
 828           sizeof(*compress_pixels));
 829         if (compress_pixels == (unsigned char *) NULL)
 830           {
 831             pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 832             ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 833           }
 834         (void) ResetMagickMemory(compress_pixels,0,(3*length+256)*
 835           sizeof(*compress_pixels));
 836         previous_pixels=(unsigned char *) AcquireQuantumMemory(length+1,
 837           sizeof(*previous_pixels));
 838         if (previous_pixels == (unsigned char *) NULL)
 839           {
 840             compress_pixels=(unsigned char *) RelinquishMagickMemory(
 841               compress_pixels);
 842             pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 843             ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 844           }
 845         (void) ResetMagickMemory(previous_pixels,0,(length+1)*
 846           sizeof(*previous_pixels));
 847         (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b3M");
 848         (void) WriteBlobString(image,buffer);
 849         break;
 850       }
 851     }
 852     for (y=0; y < (ssize_t) image->rows; y++)
 853     {
 854       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 855       if (p == (const Quantum *) NULL)
 856         break;
 857       q=pixels;
 858       switch (bits_per_pixel)
 859       {
 860         case 1:
 861         {
 862           register unsigned char
 863             bit,
 864             byte;
 865
 866           /*
 867             Monochrome image.
 868           */
 869           bit=0;
 870           byte=0;
 871           for (x=0; x < (ssize_t) image->columns; x++)
 872           {
 873             byte<<=1;
 874             if (GetPixelLuma(image,p) < (QuantumRange/2.0))
 875               byte|=0x01;
 876             bit++;
 877             if (bit == 8)
 878               {
 879                 *q++=byte;
 880                 bit=0;
 881                 byte=0;
 882               }
 883             p+=GetPixelChannels(image);
 884           }
 885           if (bit != 0)
 886             *q++=byte << (8-bit);
 887           break;
 888         }
 889         case 8:
 890         {
 891           /*
 892             Colormapped image.
 893           */
 894           for (x=0; x < (ssize_t) image->columns; x++)
 895           {
 896             *q++=(unsigned char) GetPixelIndex(image,p);
 897             p+=GetPixelChannels(image);
 898           }
 899           break;
 900         }
 901         case 24:
 902         case 32:
 903         {
 904           /*
 905             Truecolor image.
 906           */
 907           for (x=0; x < (ssize_t) image->columns; x++)
 908           {
 909             *q++=ScaleQuantumToChar(GetPixelRed(image,p));
 910             *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
 911             *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
 912             p+=GetPixelChannels(image);
 913           }
 914           break;
 915         }
 916       }
 917       switch (compression)
 918       {
 919         case NoCompression:
 920         {
 921           (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
 922             (double) length);
 923           (void) WriteBlobString(image,buffer);
 924           (void) WriteBlob(image,length,pixels);
 925           break;
 926         }
 927         case RLECompression:
 928         {
 929           packets=PCLPackbitsCompressImage(length,pixels,compress_pixels);
 930           (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
 931             (double) packets);
 932           (void) WriteBlobString(image,buffer);
 933           (void) WriteBlob(image,packets,compress_pixels);
 934           break;
 935         }
 936         default:
 937         {
 938           if (y == 0)
 939             for (i=0; i < (ssize_t) length; i++)
 940               previous_pixels[i]=(~pixels[i]);
 941           packets=PCLDeltaCompressImage(length,previous_pixels,pixels,
 942             compress_pixels);
 943           (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
 944             (double) packets);
 945           (void) WriteBlobString(image,buffer);
 946           (void) WriteBlob(image,packets,compress_pixels);
 947           (void) CopyMagickMemory(previous_pixels,pixels,length*
 948             sizeof(*pixels));
 949           break;
 950         }
 951       }
 952     }
 953     (void) WriteBlobString(image,"\033*rB");  /* end graphics */
 954     switch (compression)
 955     {
 956       case NoCompression:
 957         break;
 958       case RLECompression:
 959       {
 960         compress_pixels=(unsigned char *) RelinquishMagickMemory(
 961           compress_pixels);
 962         break;
 963       }
 964       default:
 965       {
 966         previous_pixels=(unsigned char *) RelinquishMagickMemory(
 967           previous_pixels);
 968         compress_pixels=(unsigned char *) RelinquishMagickMemory(
 969           compress_pixels);
 970         break;
 971       }
 972     }
 973     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 974     if (GetNextImageInList(image) == (Image *) NULL)
 975       break;
 976     image=SyncNextImageInList(image);
 977     status=SetImageProgress(image,SaveImagesTag,scene++,
 978       GetImageListLength(image));
 979     if (status == MagickFalse)
 980       break;
 981   } while (image_info->adjoin != MagickFalse);
 982   (void) WriteBlobString(image,"\033E");
 983   (void) CloseBlob(image);
 984   return(MagickTrue);
 985 }