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 1999-2019 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 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",
330 image->resolution.x,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
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 */
RegisterPCLImage(void)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 (void) RegisterMagickInfo(entry);
426 return(MagickImageCoderSignature);
427 }
428
429 /*
430 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
431 % %
432 % %
433 % %
434 % U n r e g i s t e r P C L I m a g e %
435 % %
436 % %
437 % %
438 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
439 %
440 % UnregisterPCLImage() removes format registrations made by the PCL module
441 % from the list of supported formats.
442 %
443 % The format of the UnregisterPCLImage method is:
444 %
445 % UnregisterPCLImage(void)
446 %
447 */
UnregisterPCLImage(void)448 ModuleExport void UnregisterPCLImage(void)
449 {
450 (void) UnregisterMagickInfo("PCL");
451 }
452
453 /*
454 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
455 % %
456 % %
457 % %
458 % W r i t e P C L I m a g e %
459 % %
460 % %
461 % %
462 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
463 %
464 % WritePCLImage() writes an image in the Page Control Language encoded
465 % image format.
466 %
467 % The format of the WritePCLImage method is:
468 %
469 % MagickBooleanType WritePCLImage(const ImageInfo *image_info,
470 % Image *image,ExceptionInfo *exception)
471 %
472 % A description of each parameter follows.
473 %
474 % o image_info: the image info.
475 %
476 % o image: The image.
477 %
478 % o exception: return any errors or warnings in this structure.
479 %
480 */
481
PCLDeltaCompressImage(const size_t length,const unsigned char * previous_pixels,const unsigned char * pixels,unsigned char * compress_pixels)482 static size_t PCLDeltaCompressImage(const size_t length,
483 const unsigned char *previous_pixels,const unsigned char *pixels,
484 unsigned char *compress_pixels)
485 {
486 int
487 delta,
488 j,
489 replacement;
490
491 register ssize_t
492 i,
493 x;
494
495 register unsigned char
496 *q;
497
498 q=compress_pixels;
499 for (x=0; x < (ssize_t) length; )
500 {
501 j=0;
502 for (i=0; x < (ssize_t) length; x++)
503 {
504 if (*pixels++ != *previous_pixels++)
505 {
506 i=1;
507 break;
508 }
509 j++;
510 }
511 while (x < (ssize_t) length)
512 {
513 x++;
514 if (*pixels == *previous_pixels)
515 break;
516 i++;
517 previous_pixels++;
518 pixels++;
519 }
520 if (i == 0)
521 break;
522 replacement=j >= 31 ? 31 : j;
523 j-=replacement;
524 delta=i >= 8 ? 8 : i;
525 *q++=(unsigned char) (((delta-1) << 5) | replacement);
526 if (replacement == 31)
527 {
528 for (replacement=255; j != 0; )
529 {
530 if (replacement > j)
531 replacement=j;
532 *q++=(unsigned char) replacement;
533 j-=replacement;
534 }
535 if (replacement == 255)
536 *q++='\0';
537 }
538 for (pixels-=i; i != 0; )
539 {
540 for (i-=delta; delta != 0; delta--)
541 *q++=(*pixels++);
542 if (i == 0)
543 break;
544 delta=i;
545 if (i >= 8)
546 delta=8;
547 *q++=(unsigned char) ((delta-1) << 5);
548 }
549 }
550 return((size_t) (q-compress_pixels));
551 }
552
PCLPackbitsCompressImage(const size_t length,const unsigned char * pixels,unsigned char * compress_pixels)553 static size_t PCLPackbitsCompressImage(const size_t length,
554 const unsigned char *pixels,unsigned char *compress_pixels)
555 {
556 int
557 count;
558
559 register ssize_t
560 x;
561
562 register unsigned char
563 *q;
564
565 ssize_t
566 j;
567
568 unsigned char
569 packbits[128];
570
571 /*
572 Compress pixels with Packbits encoding.
573 */
574 q=compress_pixels;
575 for (x=(ssize_t) length; x != 0; )
576 {
577 switch (x)
578 {
579 case 1:
580 {
581 x--;
582 *q++=0;
583 *q++=(*pixels);
584 break;
585 }
586 case 2:
587 {
588 x-=2;
589 *q++=1;
590 *q++=(*pixels);
591 *q++=pixels[1];
592 break;
593 }
594 case 3:
595 {
596 x-=3;
597 if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
598 {
599 *q++=(unsigned char) ((256-3)+1);
600 *q++=(*pixels);
601 break;
602 }
603 *q++=2;
604 *q++=(*pixels);
605 *q++=pixels[1];
606 *q++=pixels[2];
607 break;
608 }
609 default:
610 {
611 if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2)))
612 {
613 /*
614 Packed run.
615 */
616 count=3;
617 while (((ssize_t) count < x) && (*pixels == *(pixels+count)))
618 {
619 count++;
620 if (count >= 127)
621 break;
622 }
623 x-=count;
624 *q++=(unsigned char) ((256-count)+1);
625 *q++=(*pixels);
626 pixels+=count;
627 break;
628 }
629 /*
630 Literal run.
631 */
632 count=0;
633 while ((*(pixels+count) != *(pixels+count+1)) ||
634 (*(pixels+count+1) != *(pixels+count+2)))
635 {
636 packbits[count+1]=pixels[count];
637 count++;
638 if (((ssize_t) count >= (x-3)) || (count >= 127))
639 break;
640 }
641 x-=count;
642 *packbits=(unsigned char) (count-1);
643 for (j=0; j <= (ssize_t) count; j++)
644 *q++=packbits[j];
645 pixels+=count;
646 break;
647 }
648 }
649 }
650 *q++=128; /* EOD marker */
651 return((size_t) (q-compress_pixels));
652 }
653
WritePCLImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)654 static MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image,
655 ExceptionInfo *exception)
656 {
657 char
658 buffer[MagickPathExtent];
659
660 CompressionType
661 compression;
662
663 const char
664 *option;
665
666 MagickBooleanType
667 status;
668
669 MagickOffsetType
670 scene;
671
672 register const Quantum *p;
673
674 register ssize_t i, x;
675
676 register unsigned char *q;
677
678 size_t
679 density,
680 imageListLength,
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 imageListLength=GetImageListLength(image);
720 do
721 {
722 /*
723 Initialize the printer.
724 */
725 (void) TransformImageColorspace(image,sRGBColorspace,exception);
726 (void) WriteBlobString(image,"\033E"); /* printer reset */
727 (void) WriteBlobString(image,"\033*r3F"); /* set presentation mode */
728 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*r%.20gs%.20gT",
729 (double) image->columns,(double) image->rows);
730 (void) WriteBlobString(image,buffer);
731 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*t%.20gR",(double)
732 density);
733 (void) WriteBlobString(image,buffer);
734 (void) WriteBlobString(image,"\033&l0E"); /* top margin 0 */
735 if (SetImageMonochrome(image,exception) != MagickFalse)
736 {
737 /*
738 Monochrome image: use default printer monochrome setup.
739 */
740 bits_per_pixel=1;
741 }
742 else
743 if (image->storage_class == DirectClass)
744 {
745 /*
746 DirectClass image.
747 */
748 bits_per_pixel=24;
749 (void) WriteBlobString(image,"\033*v6W"); /* set color mode */
750 (void) WriteBlobByte(image,0); /* RGB */
751 (void) WriteBlobByte(image,3); /* direct by pixel */
752 (void) WriteBlobByte(image,0); /* bits per index (ignored) */
753 (void) WriteBlobByte(image,8); /* bits per red component */
754 (void) WriteBlobByte(image,8); /* bits per green component */
755 (void) WriteBlobByte(image,8); /* bits per blue component */
756 }
757 else
758 {
759 /*
760 Colormapped image.
761 */
762 bits_per_pixel=8;
763 (void) WriteBlobString(image,"\033*v6W"); /* set color mode... */
764 (void) WriteBlobByte(image,0); /* RGB */
765 (void) WriteBlobByte(image,1); /* indexed by pixel */
766 (void) WriteBlobByte(image,bits_per_pixel); /* bits per index */
767 (void) WriteBlobByte(image,8); /* bits per red component */
768 (void) WriteBlobByte(image,8); /* bits per green component */
769 (void) WriteBlobByte(image,8); /* bits per blue component */
770 for (i=0; i < (ssize_t) image->colors; i++)
771 {
772 (void) FormatLocaleString(buffer,MagickPathExtent,
773 "\033*v%da%db%dc%.20gI",
774 ScaleQuantumToChar(image->colormap[i].red),
775 ScaleQuantumToChar(image->colormap[i].green),
776 ScaleQuantumToChar(image->colormap[i].blue),(double) i);
777 (void) WriteBlobString(image,buffer);
778 }
779 for (one=1; i < (ssize_t) (one << bits_per_pixel); i++)
780 {
781 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*v%.20gI",
782 (double) i);
783 (void) WriteBlobString(image,buffer);
784 }
785 }
786 option=GetImageOption(image_info,"pcl:fit-to-page");
787 if (IsStringTrue(option) != MagickFalse)
788 (void) WriteBlobString(image,"\033*r3A");
789 else
790 (void) WriteBlobString(image,"\033*r1A"); /* start raster graphics */
791 (void) WriteBlobString(image,"\033*b0Y"); /* set y offset */
792 length=(image->columns*bits_per_pixel+7)/8;
793 pixels=(unsigned char *) AcquireQuantumMemory(length+1,sizeof(*pixels));
794 if (pixels == (unsigned char *) NULL)
795 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
796 (void) memset(pixels,0,(length+1)*sizeof(*pixels));
797 compress_pixels=(unsigned char *) NULL;
798 previous_pixels=(unsigned char *) NULL;
799
800 compression=UndefinedCompression;
801 if (image_info->compression != UndefinedCompression)
802 compression=image_info->compression;
803 switch (compression)
804 {
805 case NoCompression:
806 {
807 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b0M");
808 (void) WriteBlobString(image,buffer);
809 break;
810 }
811 case RLECompression:
812 {
813 compress_pixels=(unsigned char *) AcquireQuantumMemory(length+256,
814 sizeof(*compress_pixels));
815 if (compress_pixels == (unsigned char *) NULL)
816 {
817 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
818 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
819 }
820 (void) memset(compress_pixels,0,(length+256)*
821 sizeof(*compress_pixels));
822 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b2M");
823 (void) WriteBlobString(image,buffer);
824 break;
825 }
826 default:
827 {
828 compress_pixels=(unsigned char *) AcquireQuantumMemory(3*length+256,
829 sizeof(*compress_pixels));
830 if (compress_pixels == (unsigned char *) NULL)
831 {
832 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
833 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
834 }
835 (void) memset(compress_pixels,0,(3*length+256)*
836 sizeof(*compress_pixels));
837 previous_pixels=(unsigned char *) AcquireQuantumMemory(length+1,
838 sizeof(*previous_pixels));
839 if (previous_pixels == (unsigned char *) NULL)
840 {
841 compress_pixels=(unsigned char *) RelinquishMagickMemory(
842 compress_pixels);
843 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
844 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
845 }
846 (void) memset(previous_pixels,0,(length+1)*
847 sizeof(*previous_pixels));
848 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b3M");
849 (void) WriteBlobString(image,buffer);
850 break;
851 }
852 }
853 for (y=0; y < (ssize_t) image->rows; y++)
854 {
855 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
856 if (p == (const Quantum *) NULL)
857 break;
858 q=pixels;
859 switch (bits_per_pixel)
860 {
861 case 1:
862 {
863 register unsigned char
864 bit,
865 byte;
866
867 /*
868 Monochrome image.
869 */
870 bit=0;
871 byte=0;
872 for (x=0; x < (ssize_t) image->columns; x++)
873 {
874 byte<<=1;
875 if (GetPixelLuma(image,p) < (QuantumRange/2.0))
876 byte|=0x01;
877 bit++;
878 if (bit == 8)
879 {
880 *q++=byte;
881 bit=0;
882 byte=0;
883 }
884 p+=GetPixelChannels(image);
885 }
886 if (bit != 0)
887 *q++=byte << (8-bit);
888 break;
889 }
890 case 8:
891 {
892 /*
893 Colormapped image.
894 */
895 for (x=0; x < (ssize_t) image->columns; x++)
896 {
897 *q++=(unsigned char) GetPixelIndex(image,p);
898 p+=GetPixelChannels(image);
899 }
900 break;
901 }
902 case 24:
903 case 32:
904 {
905 /*
906 Truecolor image.
907 */
908 for (x=0; x < (ssize_t) image->columns; x++)
909 {
910 *q++=ScaleQuantumToChar(GetPixelRed(image,p));
911 *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
912 *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
913 p+=GetPixelChannels(image);
914 }
915 break;
916 }
917 }
918 switch (compression)
919 {
920 case NoCompression:
921 {
922 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
923 (double) length);
924 (void) WriteBlobString(image,buffer);
925 (void) WriteBlob(image,length,pixels);
926 break;
927 }
928 case RLECompression:
929 {
930 packets=PCLPackbitsCompressImage(length,pixels,compress_pixels);
931 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
932 (double) packets);
933 (void) WriteBlobString(image,buffer);
934 (void) WriteBlob(image,packets,compress_pixels);
935 break;
936 }
937 default:
938 {
939 if (y == 0)
940 for (i=0; i < (ssize_t) length; i++)
941 previous_pixels[i]=(~pixels[i]);
942 packets=PCLDeltaCompressImage(length,previous_pixels,pixels,
943 compress_pixels);
944 (void) FormatLocaleString(buffer,MagickPathExtent,"\033*b%.20gW",
945 (double) packets);
946 (void) WriteBlobString(image,buffer);
947 (void) WriteBlob(image,packets,compress_pixels);
948 (void) memcpy(previous_pixels,pixels,length*
949 sizeof(*pixels));
950 break;
951 }
952 }
953 }
954 (void) WriteBlobString(image,"\033*rB"); /* end graphics */
955 switch (compression)
956 {
957 case NoCompression:
958 break;
959 case RLECompression:
960 {
961 compress_pixels=(unsigned char *) RelinquishMagickMemory(
962 compress_pixels);
963 break;
964 }
965 default:
966 {
967 previous_pixels=(unsigned char *) RelinquishMagickMemory(
968 previous_pixels);
969 compress_pixels=(unsigned char *) RelinquishMagickMemory(
970 compress_pixels);
971 break;
972 }
973 }
974 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
975 if (GetNextImageInList(image) == (Image *) NULL)
976 break;
977 image=SyncNextImageInList(image);
978 status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
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 }
986