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 1999-2020 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 % https://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
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
78 /*
79 Forward declarations.
80 */
81 static MagickBooleanType
82 WritePCLImage(const ImageInfo *,Image *,ExceptionInfo *);
83
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 */
IsPCL(const unsigned char * magick,const size_t length)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
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 */
ReadPCLImage(const ImageInfo * image_info,ExceptionInfo * exception)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) memset(&bounding_box,0,sizeof(bounding_box));
248 (void) memset(&bounds,0,sizeof(bounds));
249 (void) memset(&page,0,sizeof(page));
250 (void) memset(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 {
323 image=DestroyImage(image);
324 return((Image *) NULL);
325 }
326 if ((page.width == 0) || (page.height == 0))
327 (void) ParseAbsoluteGeometry(PSPageGeometry,&page);
328 if (image_info->page != (char *) NULL)
329 (void) ParseAbsoluteGeometry(image_info->page,&page);
330 density=AcquireString("");
331 options=AcquireString("");
332 (void) FormatLocaleString(density,MagickPathExtent,"%gx%g",
333 image->resolution.x,image->resolution.y);
334 page.width=(size_t) floor(page.width*image->resolution.x/delta.x+0.5);
335 page.height=(size_t) floor(page.height*image->resolution.y/delta.y+0.5);
336 (void) FormatLocaleString(options,MagickPathExtent,"-g%.20gx%.20g ",(double)
337 page.width,(double) page.height);
338 image=DestroyImage(image);
339 read_info=CloneImageInfo(image_info);
340 *read_info->magick='\0';
341 if (read_info->number_scenes != 0)
342 {
343 if (read_info->number_scenes != 1)
344 (void) FormatLocaleString(options,MagickPathExtent,"-dLastPage=%.20g",
345 (double) (read_info->scene+read_info->number_scenes));
346 else
347 (void) FormatLocaleString(options,MagickPathExtent,
348 "-dFirstPage=%.20g -dLastPage=%.20g",(double) read_info->scene+1,
349 (double) (read_info->scene+read_info->number_scenes));
350 read_info->number_scenes=0;
351 if (read_info->scenes != (char *) NULL)
352 *read_info->scenes='\0';
353 }
354 (void) CopyMagickString(filename,read_info->filename,MagickPathExtent);
355 (void) AcquireUniqueFilename(read_info->filename);
356 (void) FormatLocaleString(command,MagickPathExtent,
357 GetDelegateCommands(delegate_info),
358 read_info->antialias != MagickFalse ? 4 : 1,
359 read_info->antialias != MagickFalse ? 4 : 1,density,options,
360 read_info->filename,input_filename);
361 options=DestroyString(options);
362 density=DestroyString(density);
363 status=ExternalDelegateCommand(MagickFalse,read_info->verbose,command,
364 (char *) NULL,exception) != 0 ? MagickTrue : MagickFalse;
365 image=ReadImage(read_info,exception);
366 (void) RelinquishUniqueFileResource(read_info->filename);
367 (void) RelinquishUniqueFileResource(input_filename);
368 read_info=DestroyImageInfo(read_info);
369 if (image == (Image *) NULL)
370 ThrowReaderException(DelegateError,"PCLDelegateFailed");
371 if (LocaleCompare(image->magick,"BMP") == 0)
372 {
373 Image
374 *cmyk_image;
375
376 cmyk_image=ConsolidateCMYKImages(image,exception);
377 if (cmyk_image != (Image *) NULL)
378 {
379 image=DestroyImageList(image);
380 image=cmyk_image;
381 }
382 }
383 do
384 {
385 (void) CopyMagickString(image->filename,filename,MagickPathExtent);
386 image->page=page;
387 next_image=SyncNextImageInList(image);
388 if (next_image != (Image *) NULL)
389 image=next_image;
390 } while (next_image != (Image *) NULL);
391 return(GetFirstImageInList(image));
392 }
393
394 /*
395 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
396 % %
397 % %
398 % %
399 % R e g i s t e r P C L I m a g e %
400 % %
401 % %
402 % %
403 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
404 %
405 % RegisterPCLImage() adds attributes for the PCL image format to
406 % the list of supported formats. The attributes include the image format
407 % tag, a method to read and/or write the format, whether the format
408 % supports the saving of more than one frame to the i file or blob,
409 % whether the format supports native in-memory I/O, and a brief
410 % description of the format.
411 %
412 % The format of the RegisterPCLImage method is:
413 %
414 % size_t RegisterPCLImage(void)
415 %
416 */
RegisterPCLImage(void)417 ModuleExport size_t RegisterPCLImage(void)
418 {
419 MagickInfo
420 *entry;
421
422 entry=AcquireMagickInfo("PCL","PCL","Printer Control Language");
423 entry->decoder=(DecodeImageHandler *) ReadPCLImage;
424 entry->encoder=(EncodeImageHandler *) WritePCLImage;
425 entry->magick=(IsImageFormatHandler *) IsPCL;
426 entry->flags^=CoderBlobSupportFlag;
427 entry->flags^=CoderDecoderThreadSupportFlag;
428 (void) RegisterMagickInfo(entry);
429 return(MagickImageCoderSignature);
430 }
431
432 /*
433 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
434 % %
435 % %
436 % %
437 % U n r e g i s t e r P C L I m a g e %
438 % %
439 % %
440 % %
441 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
442 %
443 % UnregisterPCLImage() removes format registrations made by the PCL module
444 % from the list of supported formats.
445 %
446 % The format of the UnregisterPCLImage method is:
447 %
448 % UnregisterPCLImage(void)
449 %
450 */
UnregisterPCLImage(void)451 ModuleExport void UnregisterPCLImage(void)
452 {
453 (void) UnregisterMagickInfo("PCL");
454 }
455
456 /*
457 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
458 % %
459 % %
460 % %
461 % W r i t e P C L I m a g e %
462 % %
463 % %
464 % %
465 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
466 %
467 % WritePCLImage() writes an image in the Page Control Language encoded
468 % image format.
469 %
470 % The format of the WritePCLImage method is:
471 %
472 % MagickBooleanType WritePCLImage(const ImageInfo *image_info,
473 % Image *image,ExceptionInfo *exception)
474 %
475 % A description of each parameter follows.
476 %
477 % o image_info: the image info.
478 %
479 % o image: The image.
480 %
481 % o exception: return any errors or warnings in this structure.
482 %
483 */
484
PCLDeltaCompressImage(const size_t length,const unsigned char * previous_pixels,const unsigned char * pixels,unsigned char * compress_pixels)485 static size_t PCLDeltaCompressImage(const size_t length,
486 const unsigned char *previous_pixels,const unsigned char *pixels,
487 unsigned char *compress_pixels)
488 {
489 int
490 delta,
491 j,
492 replacement;
493
494 register ssize_t
495 i,
496 x;
497
498 register unsigned char
499 *q;
500
501 q=compress_pixels;
502 for (x=0; x < (ssize_t) length; )
503 {
504 j=0;
505 for (i=0; x < (ssize_t) length; x++)
506 {
507 if (*pixels++ != *previous_pixels++)
508 {
509 i=1;
510 break;
511 }
512 j++;
513 }
514 while (x < (ssize_t) length)
515 {
516 x++;
517 if (*pixels == *previous_pixels)
518 break;
519 i++;
520 previous_pixels++;
521 pixels++;
522 }
523 if (i == 0)
524 break;
525 replacement=j >= 31 ? 31 : j;
526 j-=replacement;
527 delta=i >= 8 ? 8 : i;
528 *q++=(unsigned char) (((delta-1) << 5) | replacement);
529 if (replacement == 31)
530 {
531 for (replacement=255; j != 0; )
532 {
533 if (replacement > j)
534 replacement=j;
535 *q++=(unsigned char) replacement;
536 j-=replacement;
537 }
538 if (replacement == 255)
539 *q++='\0';
540 }
541 for (pixels-=i; i != 0; )
542 {
543 for (i-=delta; delta != 0; delta--)
544 *q++=(*pixels++);
545 if (i == 0)
546 break;
547 delta=i;
548 if (i >= 8)
549 delta=8;
550 *q++=(unsigned char) ((delta-1) << 5);
551 }
552 }
553 return((size_t) (q-compress_pixels));
554 }
555
PCLPackbitsCompressImage(const size_t length,const unsigned char * pixels,unsigned char * compress_pixels)556 static size_t PCLPackbitsCompressImage(const size_t length,
557 const unsigned char *pixels,unsigned char *compress_pixels)
558 {
559 int
560 count;
561
562 register ssize_t
563 x;
564
565 register unsigned char
566 *q;
567
568 ssize_t
569 j;
570
571 unsigned char
572 packbits[128];
573
574 /*
575 Compress pixels with Packbits encoding.
576 */
577 q=compress_pixels;
578 for (x=(ssize_t) length; x != 0; )
579 {
580 switch (x)
581 {
582 case 1:
583 {
584 x--;
585 *q++=0;
586 *q++=(*pixels);
587 break;
588 }
589 case 2:
590 {
591 x-=2;
592 *q++=1;
593 *q++=(*pixels);
594 *q++=pixels[1];
595 break;
596 }
597 case 3:
598 {
599 x-=3;
600 if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
601 {
602 *q++=(unsigned char) ((256-3)+1);
603 *q++=(*pixels);
604 break;
605 }
606 *q++=2;
607 *q++=(*pixels);
608 *q++=pixels[1];
609 *q++=pixels[2];
610 break;
611 }
612 default:
613 {
614 if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
615 {
616 /*
617 Packed run.
618 */
619 count=3;
620 while (((ssize_t) count < x) && (*pixels == *(pixels+count)))
621 {
622 count++;
623 if (count >= 127)
624 break;
625 }
626 x-=count;
627 *q++=(unsigned char) ((256-count)+1);
628 *q++=(*pixels);
629 pixels+=count;
630 break;
631 }
632 /*
633 Literal run.
634 */
635 count=0;
636 while ((*(pixels+count) != *(pixels+count+1)) ||
637 (*(pixels+count+1) != *(pixels+count+2)))
638 {
639 packbits[count+1]=pixels[count];
640 count++;
641 if (((ssize_t) count >= (x-3)) || (count >= 127))
642 break;
643 }
644 x-=count;
645 *packbits=(unsigned char) (count-1);
646 for (j=0; j <= (ssize_t) count; j++)
647 *q++=packbits[j];
648 pixels+=count;
649 break;
650 }
651 }
652 }
653 *q++=128; /* EOD marker */
654 return((size_t) (q-compress_pixels));
655 }
656
WritePCLImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)657 static MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image,
658 ExceptionInfo *exception)
659 {
660 char
661 buffer[MagickPathExtent];
662
663 CompressionType
664 compression;
665
666 const char
667 *option;
668
669 MagickBooleanType
670 status;
671
672 MagickOffsetType
673 scene;
674
675 register const Quantum *p;
676
677 register ssize_t i, x;
678
679 register unsigned char *q;
680
681 size_t
682 density,
683 imageListLength,
684 length,
685 one,
686 packets;
687
688 ssize_t
689 y;
690
691 unsigned char
692 bits_per_pixel,
693 *compress_pixels,
694 *pixels,
695 *previous_pixels;
696
697 /*
698 Open output image file.
699 */
700 assert(image_info != (const ImageInfo *) NULL);
701 assert(image_info->signature == MagickCoreSignature);
702 assert(image != (Image *) NULL);
703 assert(image->signature == MagickCoreSignature);
704 if (image->debug != MagickFalse)
705 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
706 assert(exception != (ExceptionInfo *) NULL);
707 assert(exception->signature == MagickCoreSignature);
708 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
709 if (status == MagickFalse)
710 return(status);
711 density=75;
712 if (image_info->density != (char *) NULL)
713 {
714 GeometryInfo
715 geometry;
716
717 (void) ParseGeometry(image_info->density,&geometry);
718 density=(size_t) geometry.rho;
719 }
720 scene=0;
721 one=1;
722 imageListLength=GetImageListLength(image);
723 do
724 {
725 /*
726 Initialize the printer.
727 */
728 (void) TransformImageColorspace(image,sRGBColorspace,exception);
729 (void) WriteBlobString(image,"\033E"); /* printer reset */
730 (void) WriteBlobString(image,"\033*r3F"); /* set presentation mode */
731 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*r%.20gs%.20gT",
732 (double) image->columns,(double) image->rows);
733 (void) WriteBlobString(image,buffer);
734 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*t%.20gR",(double)
735 density);
736 (void) WriteBlobString(image,buffer);
737 (void) WriteBlobString(image,"\033&l0E"); /* top margin 0 */
738 if (SetImageMonochrome(image,exception) != MagickFalse)
739 {
740 /*
741 Monochrome image: use default printer monochrome setup.
742 */
743 bits_per_pixel=1;
744 }
745 else
746 if (image->storage_class == DirectClass)
747 {
748 /*
749 DirectClass image.
750 */
751 bits_per_pixel=24;
752 (void) WriteBlobString(image,"\033*v6W"); /* set color mode */
753 (void) WriteBlobByte(image,0); /* RGB */
754 (void) WriteBlobByte(image,3); /* direct by pixel */
755 (void) WriteBlobByte(image,0); /* bits per index (ignored) */
756 (void) WriteBlobByte(image,8); /* bits per red component */
757 (void) WriteBlobByte(image,8); /* bits per green component */
758 (void) WriteBlobByte(image,8); /* bits per blue component */
759 }
760 else
761 {
762 /*
763 Colormapped image.
764 */
765 bits_per_pixel=8;
766 (void) WriteBlobString(image,"\033*v6W"); /* set color mode... */
767 (void) WriteBlobByte(image,0); /* RGB */
768 (void) WriteBlobByte(image,1); /* indexed by pixel */
769 (void) WriteBlobByte(image,bits_per_pixel); /* bits per index */
770 (void) WriteBlobByte(image,8); /* bits per red component */
771 (void) WriteBlobByte(image,8); /* bits per green component */
772 (void) WriteBlobByte(image,8); /* bits per blue component */
773 for (i=0; i < (ssize_t) image->colors; i++)
774 {
775 (void) FormatLocaleString(buffer,MagickPathExtent,
776 "\033*v%da%db%dc%.20gI",
777 ScaleQuantumToChar(image->colormap[i].red),
778 ScaleQuantumToChar(image->colormap[i].green),
779 ScaleQuantumToChar(image->colormap[i].blue),(double) i);
780 (void) WriteBlobString(image,buffer);
781 }
782 for (one=1; i < (ssize_t) (one << bits_per_pixel); i++)
783 {
784 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*v%.20gI",
785 (double) i);
786 (void) WriteBlobString(image,buffer);
787 }
788 }
789 option=GetImageOption(image_info,"pcl:fit-to-page");
790 if (IsStringTrue(option) != MagickFalse)
791 (void) WriteBlobString(image,"\033*r3A");
792 else
793 (void) WriteBlobString(image,"\033*r1A"); /* start raster graphics */
794 (void) WriteBlobString(image,"\033*b0Y"); /* set y offset */
795 length=(image->columns*bits_per_pixel+7)/8;
796 pixels=(unsigned char *) AcquireQuantumMemory(length+1,sizeof(*pixels));
797 if (pixels == (unsigned char *) NULL)
798 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
799 (void) memset(pixels,0,(length+1)*sizeof(*pixels));
800 compress_pixels=(unsigned char *) NULL;
801 previous_pixels=(unsigned char *) NULL;
802
803 compression=UndefinedCompression;
804 if (image_info->compression != UndefinedCompression)
805 compression=image_info->compression;
806 switch (compression)
807 {
808 case NoCompression:
809 {
810 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b0M");
811 (void) WriteBlobString(image,buffer);
812 break;
813 }
814 case RLECompression:
815 {
816 compress_pixels=(unsigned char *) AcquireQuantumMemory(length+256,
817 sizeof(*compress_pixels));
818 if (compress_pixels == (unsigned char *) NULL)
819 {
820 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
821 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
822 }
823 (void) memset(compress_pixels,0,(length+256)*
824 sizeof(*compress_pixels));
825 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b2M");
826 (void) WriteBlobString(image,buffer);
827 break;
828 }
829 default:
830 {
831 compress_pixels=(unsigned char *) AcquireQuantumMemory(3*length+256,
832 sizeof(*compress_pixels));
833 if (compress_pixels == (unsigned char *) NULL)
834 {
835 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
836 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
837 }
838 (void) memset(compress_pixels,0,(3*length+256)*
839 sizeof(*compress_pixels));
840 previous_pixels=(unsigned char *) AcquireQuantumMemory(length+1,
841 sizeof(*previous_pixels));
842 if (previous_pixels == (unsigned char *) NULL)
843 {
844 compress_pixels=(unsigned char *) RelinquishMagickMemory(
845 compress_pixels);
846 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
847 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
848 }
849 (void) memset(previous_pixels,0,(length+1)*
850 sizeof(*previous_pixels));
851 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b3M");
852 (void) WriteBlobString(image,buffer);
853 break;
854 }
855 }
856 for (y=0; y < (ssize_t) image->rows; y++)
857 {
858 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
859 if (p == (const Quantum *) NULL)
860 break;
861 q=pixels;
862 switch (bits_per_pixel)
863 {
864 case 1:
865 {
866 register unsigned char
867 bit,
868 byte;
869
870 /*
871 Monochrome image.
872 */
873 bit=0;
874 byte=0;
875 for (x=0; x < (ssize_t) image->columns; x++)
876 {
877 byte<<=1;
878 if (GetPixelLuma(image,p) < (QuantumRange/2.0))
879 byte|=0x01;
880 bit++;
881 if (bit == 8)
882 {
883 *q++=byte;
884 bit=0;
885 byte=0;
886 }
887 p+=GetPixelChannels(image);
888 }
889 if (bit != 0)
890 *q++=byte << (8-bit);
891 break;
892 }
893 case 8:
894 {
895 /*
896 Colormapped image.
897 */
898 for (x=0; x < (ssize_t) image->columns; x++)
899 {
900 *q++=(unsigned char) GetPixelIndex(image,p);
901 p+=GetPixelChannels(image);
902 }
903 break;
904 }
905 case 24:
906 case 32:
907 {
908 /*
909 Truecolor image.
910 */
911 for (x=0; x < (ssize_t) image->columns; x++)
912 {
913 *q++=ScaleQuantumToChar(GetPixelRed(image,p));
914 *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
915 *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
916 p+=GetPixelChannels(image);
917 }
918 break;
919 }
920 }
921 switch (compression)
922 {
923 case NoCompression:
924 {
925 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
926 (double) length);
927 (void) WriteBlobString(image,buffer);
928 (void) WriteBlob(image,length,pixels);
929 break;
930 }
931 case RLECompression:
932 {
933 packets=PCLPackbitsCompressImage(length,pixels,compress_pixels);
934 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
935 (double) packets);
936 (void) WriteBlobString(image,buffer);
937 (void) WriteBlob(image,packets,compress_pixels);
938 break;
939 }
940 default:
941 {
942 if (y == 0)
943 for (i=0; i < (ssize_t) length; i++)
944 previous_pixels[i]=(~pixels[i]);
945 packets=PCLDeltaCompressImage(length,previous_pixels,pixels,
946 compress_pixels);
947 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
948 (double) packets);
949 (void) WriteBlobString(image,buffer);
950 (void) WriteBlob(image,packets,compress_pixels);
951 (void) memcpy(previous_pixels,pixels,length*
952 sizeof(*pixels));
953 break;
954 }
955 }
956 }
957 (void) WriteBlobString(image,"\033*rB"); /* end graphics */
958 switch (compression)
959 {
960 case NoCompression:
961 break;
962 case RLECompression:
963 {
964 compress_pixels=(unsigned char *) RelinquishMagickMemory(
965 compress_pixels);
966 break;
967 }
968 default:
969 {
970 previous_pixels=(unsigned char *) RelinquishMagickMemory(
971 previous_pixels);
972 compress_pixels=(unsigned char *) RelinquishMagickMemory(
973 compress_pixels);
974 break;
975 }
976 }
977 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
978 if (GetNextImageInList(image) == (Image *) NULL)
979 break;
980 image=SyncNextImageInList(image);
981 status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
982 if (status == MagickFalse)
983 break;
984 } while (image_info->adjoin != MagickFalse);
985 (void) WriteBlobString(image,"\033E");
986 (void) CloseBlob(image);
987 return(MagickTrue);
988 }
989