1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % SSSSS U U N N %
7 % SS U U NN N %
8 % SSS U U N N N %
9 % SS U U N NN %
10 % SSSSS UUU N N %
11 % %
12 % %
13 % Read/Write Sun Rasterfile Image 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/attribute.h"
44 #include "MagickCore/blob.h"
45 #include "MagickCore/blob-private.h"
46 #include "MagickCore/cache.h"
47 #include "MagickCore/color.h"
48 #include "MagickCore/color-private.h"
49 #include "MagickCore/colormap.h"
50 #include "MagickCore/colormap-private.h"
51 #include "MagickCore/colorspace.h"
52 #include "MagickCore/colorspace-private.h"
53 #include "MagickCore/exception.h"
54 #include "MagickCore/exception-private.h"
55 #include "MagickCore/image.h"
56 #include "MagickCore/image-private.h"
57 #include "MagickCore/list.h"
58 #include "MagickCore/magick.h"
59 #include "MagickCore/memory_.h"
60 #include "MagickCore/memory-private.h"
61 #include "MagickCore/monitor.h"
62 #include "MagickCore/monitor-private.h"
63 #include "MagickCore/pixel-accessor.h"
64 #include "MagickCore/quantum-private.h"
65 #include "MagickCore/static.h"
66 #include "MagickCore/string_.h"
67 #include "MagickCore/module.h"
68
69 /*
70 Forward declarations.
71 */
72 static MagickBooleanType
73 WriteSUNImage(const ImageInfo *,Image *,ExceptionInfo *);
74
75 /*
76 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
77 % %
78 % %
79 % %
80 % I s S U N %
81 % %
82 % %
83 % %
84 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
85 %
86 % IsSUN() returns MagickTrue if the image format type, identified by the
87 % magick string, is SUN.
88 %
89 % The format of the IsSUN method is:
90 %
91 % MagickBooleanType IsSUN(const unsigned char *magick,const size_t length)
92 %
93 % A description of each parameter follows:
94 %
95 % o magick: compare image format pattern against these bytes.
96 %
97 % o length: Specifies the length of the magick string.
98 %
99 */
IsSUN(const unsigned char * magick,const size_t length)100 static MagickBooleanType IsSUN(const unsigned char *magick,const size_t length)
101 {
102 if (length < 4)
103 return(MagickFalse);
104 if (memcmp(magick,"\131\246\152\225",4) == 0)
105 return(MagickTrue);
106 return(MagickFalse);
107 }
108
109 /*
110 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
111 % %
112 % %
113 % %
114 % D e c o d e I m a g e %
115 % %
116 % %
117 % %
118 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
119 %
120 % DecodeImage unpacks the packed image pixels into runlength-encoded pixel
121 % packets.
122 %
123 % The format of the DecodeImage method is:
124 %
125 % MagickBooleanType DecodeImage(const unsigned char *compressed_pixels,
126 % const size_t length,unsigned char *pixels)
127 %
128 % A description of each parameter follows:
129 %
130 % o compressed_pixels: The address of a byte (8 bits) array of compressed
131 % pixel data.
132 %
133 % o length: An integer value that is the total number of bytes of the
134 % source image (as just read by ReadBlob)
135 %
136 % o pixels: The address of a byte (8 bits) array of pixel data created by
137 % the uncompression process. The number of bytes in this array
138 % must be at least equal to the number columns times the number of rows
139 % of the source pixels.
140 %
141 */
DecodeImage(const unsigned char * compressed_pixels,const size_t length,unsigned char * pixels,size_t extent)142 static MagickBooleanType DecodeImage(const unsigned char *compressed_pixels,
143 const size_t length,unsigned char *pixels,size_t extent)
144 {
145 register const unsigned char
146 *p;
147
148 register unsigned char
149 *q;
150
151 ssize_t
152 count;
153
154 unsigned char
155 byte;
156
157 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
158 assert(compressed_pixels != (unsigned char *) NULL);
159 assert(pixels != (unsigned char *) NULL);
160 p=compressed_pixels;
161 q=pixels;
162 while (((size_t) (p-compressed_pixels) < length) &&
163 ((size_t) (q-pixels) < extent))
164 {
165 byte=(*p++);
166 if (byte != 128U)
167 *q++=byte;
168 else
169 {
170 /*
171 Runlength-encoded packet: <count><byte>.
172 */
173 if (((size_t) (p-compressed_pixels) >= length))
174 break;
175 count=(*p++);
176 if (count > 0)
177 {
178 if (((size_t) (p-compressed_pixels) >= length))
179 break;
180 byte=(*p++);
181 }
182 while ((count >= 0) && ((size_t) (q-pixels) < extent))
183 {
184 *q++=byte;
185 count--;
186 }
187 }
188 }
189 return(((size_t) (q-pixels) == extent) ? MagickTrue : MagickFalse);
190 }
191
192 /*
193 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
194 % %
195 % %
196 % %
197 % R e a d S U N I m a g e %
198 % %
199 % %
200 % %
201 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
202 %
203 % ReadSUNImage() reads a SUN image file and returns it. It allocates
204 % the memory necessary for the new Image structure and returns a pointer to
205 % the new image.
206 %
207 % The format of the ReadSUNImage method is:
208 %
209 % Image *ReadSUNImage(const ImageInfo *image_info,ExceptionInfo *exception)
210 %
211 % A description of each parameter follows:
212 %
213 % o image_info: the image info.
214 %
215 % o exception: return any errors or warnings in this structure.
216 %
217 */
ReadSUNImage(const ImageInfo * image_info,ExceptionInfo * exception)218 static Image *ReadSUNImage(const ImageInfo *image_info,ExceptionInfo *exception)
219 {
220 #define RMT_EQUAL_RGB 1
221 #define RMT_NONE 0
222 #define RMT_RAW 2
223 #define RT_STANDARD 1
224 #define RT_ENCODED 2
225 #define RT_FORMAT_RGB 3
226
227 typedef struct _SUNInfo
228 {
229 unsigned int
230 magic,
231 width,
232 height,
233 depth,
234 length,
235 type,
236 maptype,
237 maplength;
238 } SUNInfo;
239
240 Image
241 *image;
242
243 int
244 bit;
245
246 MagickBooleanType
247 status;
248
249 MagickSizeType
250 number_pixels;
251
252 register Quantum
253 *q;
254
255 register ssize_t
256 i,
257 x;
258
259 register unsigned char
260 *p;
261
262 size_t
263 bytes_per_line,
264 extent,
265 height,
266 pixels_length,
267 quantum;
268
269 ssize_t
270 count,
271 y;
272
273 SUNInfo
274 sun_info;
275
276 unsigned char
277 *sun_data,
278 *sun_pixels;
279
280 /*
281 Open image file.
282 */
283 assert(image_info != (const ImageInfo *) NULL);
284 assert(image_info->signature == MagickCoreSignature);
285 if (image_info->debug != MagickFalse)
286 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
287 image_info->filename);
288 assert(exception != (ExceptionInfo *) NULL);
289 assert(exception->signature == MagickCoreSignature);
290 image=AcquireImage(image_info,exception);
291 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
292 if (status == MagickFalse)
293 {
294 image=DestroyImageList(image);
295 return((Image *) NULL);
296 }
297 /*
298 Read SUN raster header.
299 */
300 (void) memset(&sun_info,0,sizeof(sun_info));
301 sun_info.magic=ReadBlobMSBLong(image);
302 do
303 {
304 /*
305 Verify SUN identifier.
306 */
307 if (sun_info.magic != 0x59a66a95)
308 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
309 sun_info.width=ReadBlobMSBLong(image);
310 sun_info.height=ReadBlobMSBLong(image);
311 sun_info.depth=ReadBlobMSBLong(image);
312 sun_info.length=ReadBlobMSBLong(image);
313 sun_info.type=ReadBlobMSBLong(image);
314 sun_info.maptype=ReadBlobMSBLong(image);
315 sun_info.maplength=ReadBlobMSBLong(image);
316 if (sun_info.maplength > GetBlobSize(image))
317 ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
318 extent=sun_info.height*sun_info.width;
319 if ((sun_info.height != 0) && (sun_info.width != extent/sun_info.height))
320 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
321 if ((sun_info.type != RT_STANDARD) && (sun_info.type != RT_ENCODED) &&
322 (sun_info.type != RT_FORMAT_RGB))
323 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
324 if ((sun_info.maptype == RMT_NONE) && (sun_info.maplength != 0))
325 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
326 if ((sun_info.depth != 1) && (sun_info.depth != 8) &&
327 (sun_info.depth != 24) && (sun_info.depth != 32))
328 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
329 if ((sun_info.maptype != RMT_NONE) && (sun_info.maptype != RMT_EQUAL_RGB) &&
330 (sun_info.maptype != RMT_RAW))
331 ThrowReaderException(CoderError,"ColormapTypeNotSupported");
332 image->columns=sun_info.width;
333 image->rows=sun_info.height;
334 image->depth=sun_info.depth <= 8 ? sun_info.depth :
335 MAGICKCORE_QUANTUM_DEPTH;
336 if (sun_info.depth < 24)
337 {
338 size_t
339 one;
340
341 image->colors=sun_info.maplength;
342 one=1;
343 if (sun_info.maptype == RMT_NONE)
344 image->colors=one << sun_info.depth;
345 if (sun_info.maptype == RMT_EQUAL_RGB)
346 image->colors=sun_info.maplength/3;
347 if (image->colors == 0)
348 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
349 if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
350 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
351 }
352 switch (sun_info.maptype)
353 {
354 case RMT_NONE:
355 break;
356 case RMT_EQUAL_RGB:
357 {
358 unsigned char
359 *sun_colormap;
360
361 /*
362 Read SUN raster colormap.
363 */
364 sun_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
365 sizeof(*sun_colormap));
366 if (sun_colormap == (unsigned char *) NULL)
367 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
368 count=ReadBlob(image,image->colors,sun_colormap);
369 if (count != (ssize_t) image->colors)
370 {
371 sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
372 ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
373 }
374 for (i=0; i < (ssize_t) image->colors; i++)
375 image->colormap[i].red=(MagickRealType) ScaleCharToQuantum(
376 sun_colormap[i]);
377 count=ReadBlob(image,image->colors,sun_colormap);
378 if (count != (ssize_t) image->colors)
379 {
380 sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
381 ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
382 }
383 for (i=0; i < (ssize_t) image->colors; i++)
384 image->colormap[i].green=(MagickRealType) ScaleCharToQuantum(
385 sun_colormap[i]);
386 count=ReadBlob(image,image->colors,sun_colormap);
387 if (count != (ssize_t) image->colors)
388 {
389 sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
390 ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
391 }
392 for (i=0; i < (ssize_t) image->colors; i++)
393 image->colormap[i].blue=(MagickRealType) ScaleCharToQuantum(
394 sun_colormap[i]);
395 sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
396 break;
397 }
398 case RMT_RAW:
399 {
400 unsigned char
401 *sun_colormap;
402
403 /*
404 Read SUN raster colormap.
405 */
406 sun_colormap=(unsigned char *) AcquireQuantumMemory(sun_info.maplength,
407 sizeof(*sun_colormap));
408 if (sun_colormap == (unsigned char *) NULL)
409 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
410 count=ReadBlob(image,sun_info.maplength,sun_colormap);
411 sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
412 if (count != (ssize_t) sun_info.maplength)
413 ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
414 break;
415 }
416 default:
417 ThrowReaderException(CoderError,"ColormapTypeNotSupported");
418 }
419 image->alpha_trait=sun_info.depth == 32 ? BlendPixelTrait :
420 UndefinedPixelTrait;
421 image->columns=sun_info.width;
422 image->rows=sun_info.height;
423 if (image_info->ping != MagickFalse)
424 {
425 (void) CloseBlob(image);
426 return(GetFirstImageInList(image));
427 }
428 status=SetImageExtent(image,image->columns,image->rows,exception);
429 if (status == MagickFalse)
430 return(DestroyImageList(image));
431 if (sun_info.length == 0)
432 ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
433 number_pixels=(MagickSizeType) (image->columns*image->rows);
434 if ((sun_info.type != RT_ENCODED) &&
435 ((number_pixels*sun_info.depth) > (8UL*sun_info.length)))
436 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
437 if (HeapOverflowSanityCheck(sun_info.width,sun_info.depth) != MagickFalse)
438 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
439 bytes_per_line=sun_info.width*sun_info.depth;
440 if (sun_info.length > GetBlobSize(image))
441 ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
442 sun_data=(unsigned char *) AcquireQuantumMemory(sun_info.length,
443 sizeof(*sun_data));
444 if (sun_data == (unsigned char *) NULL)
445 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
446 count=(ssize_t) ReadBlob(image,sun_info.length,sun_data);
447 if (count != (ssize_t) sun_info.length)
448 {
449 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
450 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
451 }
452 height=sun_info.height;
453 if ((height == 0) || (sun_info.width == 0) || (sun_info.depth == 0) ||
454 ((bytes_per_line/sun_info.depth) != sun_info.width))
455 {
456 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
457 ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
458 }
459 quantum=sun_info.depth == 1 ? 15 : 7;
460 bytes_per_line+=quantum;
461 bytes_per_line<<=1;
462 if ((bytes_per_line >> 1) != (sun_info.width*sun_info.depth+quantum))
463 {
464 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
465 ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
466 }
467 bytes_per_line>>=4;
468 if (HeapOverflowSanityCheck(height,bytes_per_line) != MagickFalse)
469 {
470 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
471 ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
472 }
473 pixels_length=height*bytes_per_line;
474 sun_pixels=(unsigned char *) AcquireQuantumMemory(pixels_length+image->rows,
475 sizeof(*sun_pixels));
476 if (sun_pixels == (unsigned char *) NULL)
477 {
478 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
479 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
480 }
481 (void) memset(sun_pixels,0,(pixels_length+image->rows)*
482 sizeof(*sun_pixels));
483 if (sun_info.type == RT_ENCODED)
484 {
485 status=DecodeImage(sun_data,sun_info.length,sun_pixels,pixels_length);
486 if (status == MagickFalse)
487 {
488 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
489 sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
490 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
491 }
492 }
493 else
494 {
495 if (sun_info.length > pixels_length)
496 {
497 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
498 sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
499 ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
500 }
501 (void) memcpy(sun_pixels,sun_data,sun_info.length);
502 }
503 sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
504 /*
505 Convert SUN raster image to pixel packets.
506 */
507 p=sun_pixels;
508 if (sun_info.depth == 1)
509 for (y=0; y < (ssize_t) image->rows; y++)
510 {
511 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
512 if (q == (Quantum *) NULL)
513 break;
514 for (x=0; x < ((ssize_t) image->columns-7); x+=8)
515 {
516 for (bit=7; bit >= 0; bit--)
517 {
518 SetPixelIndex(image,(Quantum) ((*p) & (0x01 << bit) ? 0x00 : 0x01),
519 q);
520 q+=GetPixelChannels(image);
521 }
522 p++;
523 }
524 if ((image->columns % 8) != 0)
525 {
526 for (bit=7; bit >= (int) (8-(image->columns % 8)); bit--)
527 {
528 SetPixelIndex(image,(Quantum) ((*p) & (0x01 << bit) ? 0x00 :
529 0x01),q);
530 q+=GetPixelChannels(image);
531 }
532 p++;
533 }
534 if ((((image->columns/8)+(image->columns % 8 ? 1 : 0)) % 2) != 0)
535 p++;
536 if (SyncAuthenticPixels(image,exception) == MagickFalse)
537 break;
538 if (image->previous == (Image *) NULL)
539 {
540 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
541 image->rows);
542 if (status == MagickFalse)
543 break;
544 }
545 }
546 else
547 if (image->storage_class == PseudoClass)
548 {
549 for (y=0; y < (ssize_t) image->rows; y++)
550 {
551 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
552 if (q == (Quantum *) NULL)
553 break;
554 for (x=0; x < (ssize_t) image->columns; x++)
555 {
556 SetPixelIndex(image,ConstrainColormapIndex(image,*p,exception),q);
557 p++;
558 q+=GetPixelChannels(image);
559 }
560 if ((image->columns % 2) != 0)
561 p++;
562 if (SyncAuthenticPixels(image,exception) == MagickFalse)
563 break;
564 if (image->previous == (Image *) NULL)
565 {
566 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
567 image->rows);
568 if (status == MagickFalse)
569 break;
570 }
571 }
572 }
573 else
574 {
575 size_t
576 bytes_per_pixel;
577
578 bytes_per_pixel=3;
579 if (image->alpha_trait != UndefinedPixelTrait)
580 bytes_per_pixel++;
581 if (bytes_per_line == 0)
582 bytes_per_line=bytes_per_pixel*image->columns;
583 for (y=0; y < (ssize_t) image->rows; y++)
584 {
585 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
586 if (q == (Quantum *) NULL)
587 break;
588 for (x=0; x < (ssize_t) image->columns; x++)
589 {
590 if (image->alpha_trait != UndefinedPixelTrait)
591 SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
592 if (sun_info.type == RT_STANDARD)
593 {
594 SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
595 SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
596 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
597 }
598 else
599 {
600 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
601 SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
602 SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
603 }
604 if (image->colors != 0)
605 {
606 SetPixelRed(image,ClampToQuantum(image->colormap[(ssize_t)
607 GetPixelRed(image,q)].red),q);
608 SetPixelGreen(image,ClampToQuantum(image->colormap[(ssize_t)
609 GetPixelGreen(image,q)].green),q);
610 SetPixelBlue(image,ClampToQuantum(image->colormap[(ssize_t)
611 GetPixelBlue(image,q)].blue),q);
612 }
613 q+=GetPixelChannels(image);
614 }
615 if (((bytes_per_pixel*image->columns) % 2) != 0)
616 p++;
617 if (SyncAuthenticPixels(image,exception) == MagickFalse)
618 break;
619 if (image->previous == (Image *) NULL)
620 {
621 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
622 image->rows);
623 if (status == MagickFalse)
624 break;
625 }
626 }
627 }
628 if (image->storage_class == PseudoClass)
629 (void) SyncImage(image,exception);
630 sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
631 if (EOFBlob(image) != MagickFalse)
632 {
633 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
634 image->filename);
635 break;
636 }
637 /*
638 Proceed to next image.
639 */
640 if (image_info->number_scenes != 0)
641 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
642 break;
643 sun_info.magic=ReadBlobMSBLong(image);
644 if (sun_info.magic == 0x59a66a95)
645 {
646 /*
647 Allocate next image structure.
648 */
649 AcquireNextImage(image_info,image,exception);
650 if (GetNextImageInList(image) == (Image *) NULL)
651 {
652 status=MagickFalse;
653 break;
654 }
655 image=SyncNextImageInList(image);
656 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
657 GetBlobSize(image));
658 if (status == MagickFalse)
659 break;
660 }
661 } while (sun_info.magic == 0x59a66a95);
662 (void) CloseBlob(image);
663 if (status == MagickFalse)
664 return(DestroyImageList(image));
665 return(GetFirstImageInList(image));
666 }
667
668 /*
669 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
670 % %
671 % %
672 % %
673 % R e g i s t e r S U N I m a g e %
674 % %
675 % %
676 % %
677 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
678 %
679 % RegisterSUNImage() adds attributes for the SUN image format to
680 % the list of supported formats. The attributes include the image format
681 % tag, a method to read and/or write the format, whether the format
682 % supports the saving of more than one frame to the same file or blob,
683 % whether the format supports native in-memory I/O, and a brief
684 % description of the format.
685 %
686 % The format of the RegisterSUNImage method is:
687 %
688 % size_t RegisterSUNImage(void)
689 %
690 */
RegisterSUNImage(void)691 ModuleExport size_t RegisterSUNImage(void)
692 {
693 MagickInfo
694 *entry;
695
696 entry=AcquireMagickInfo("SUN","RAS","SUN Rasterfile");
697 entry->decoder=(DecodeImageHandler *) ReadSUNImage;
698 entry->encoder=(EncodeImageHandler *) WriteSUNImage;
699 entry->magick=(IsImageFormatHandler *) IsSUN;
700 entry->flags|=CoderDecoderSeekableStreamFlag;
701 (void) RegisterMagickInfo(entry);
702 entry=AcquireMagickInfo("SUN","SUN","SUN Rasterfile");
703 entry->decoder=(DecodeImageHandler *) ReadSUNImage;
704 entry->encoder=(EncodeImageHandler *) WriteSUNImage;
705 entry->flags|=CoderDecoderSeekableStreamFlag;
706 (void) RegisterMagickInfo(entry);
707 return(MagickImageCoderSignature);
708 }
709
710 /*
711 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
712 % %
713 % %
714 % %
715 % U n r e g i s t e r S U N I m a g e %
716 % %
717 % %
718 % %
719 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
720 %
721 % UnregisterSUNImage() removes format registrations made by the
722 % SUN module from the list of supported formats.
723 %
724 % The format of the UnregisterSUNImage method is:
725 %
726 % UnregisterSUNImage(void)
727 %
728 */
UnregisterSUNImage(void)729 ModuleExport void UnregisterSUNImage(void)
730 {
731 (void) UnregisterMagickInfo("RAS");
732 (void) UnregisterMagickInfo("SUN");
733 }
734
735 /*
736 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
737 % %
738 % %
739 % %
740 % W r i t e S U N I m a g e %
741 % %
742 % %
743 % %
744 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
745 %
746 % WriteSUNImage() writes an image in the SUN rasterfile format.
747 %
748 % The format of the WriteSUNImage method is:
749 %
750 % MagickBooleanType WriteSUNImage(const ImageInfo *image_info,
751 % Image *image,ExceptionInfo *exception)
752 %
753 % A description of each parameter follows.
754 %
755 % o image_info: the image info.
756 %
757 % o image: The image.
758 %
759 % o exception: return any errors or warnings in this structure.
760 %
761 */
WriteSUNImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)762 static MagickBooleanType WriteSUNImage(const ImageInfo *image_info,Image *image,
763 ExceptionInfo *exception)
764 {
765 #define RMT_EQUAL_RGB 1
766 #define RMT_NONE 0
767 #define RMT_RAW 2
768 #define RT_STANDARD 1
769 #define RT_FORMAT_RGB 3
770
771 typedef struct _SUNInfo
772 {
773 unsigned int
774 magic,
775 width,
776 height,
777 depth,
778 length,
779 type,
780 maptype,
781 maplength;
782 } SUNInfo;
783
784 MagickBooleanType
785 status;
786
787 MagickOffsetType
788 scene;
789
790 MagickSizeType
791 number_pixels;
792
793 register const Quantum
794 *p;
795
796 register ssize_t
797 i,
798 x;
799
800 size_t
801 imageListLength;
802
803 ssize_t
804 y;
805
806 SUNInfo
807 sun_info;
808
809 /*
810 Open output image file.
811 */
812 assert(image_info != (const ImageInfo *) NULL);
813 assert(image_info->signature == MagickCoreSignature);
814 assert(image != (Image *) NULL);
815 assert(image->signature == MagickCoreSignature);
816 if (image->debug != MagickFalse)
817 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
818 assert(exception != (ExceptionInfo *) NULL);
819 assert(exception->signature == MagickCoreSignature);
820 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
821 if (status == MagickFalse)
822 return(status);
823 scene=0;
824 imageListLength=GetImageListLength(image);
825 do
826 {
827 /*
828 Initialize SUN raster file header.
829 */
830 (void) TransformImageColorspace(image,sRGBColorspace,exception);
831 sun_info.magic=0x59a66a95;
832 if ((image->columns != (unsigned int) image->columns) ||
833 (image->rows != (unsigned int) image->rows))
834 ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
835 sun_info.width=(unsigned int) image->columns;
836 sun_info.height=(unsigned int) image->rows;
837 sun_info.type=(unsigned int)
838 (image->storage_class == DirectClass ? RT_FORMAT_RGB : RT_STANDARD);
839 sun_info.maptype=RMT_NONE;
840 sun_info.maplength=0;
841 number_pixels=(MagickSizeType) image->columns*image->rows;
842 if ((4*number_pixels) != (size_t) (4*number_pixels))
843 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
844 if (image->storage_class == DirectClass)
845 {
846 /*
847 Full color SUN raster.
848 */
849 sun_info.depth=(unsigned int) image->alpha_trait !=
850 UndefinedPixelTrait ? 32U : 24U;
851 sun_info.length=(unsigned int) ((image->alpha_trait !=
852 UndefinedPixelTrait ? 4 : 3)*number_pixels);
853 sun_info.length+=sun_info.length & 0x01 ? (unsigned int) image->rows :
854 0;
855 }
856 else
857 if (SetImageMonochrome(image,exception) != MagickFalse)
858 {
859 /*
860 Monochrome SUN raster.
861 */
862 sun_info.depth=1;
863 sun_info.length=(unsigned int) (((image->columns+7) >> 3)*
864 image->rows);
865 sun_info.length+=(unsigned int) (((image->columns/8)+(image->columns %
866 8 ? 1 : 0)) % 2 ? image->rows : 0);
867 }
868 else
869 {
870 /*
871 Colormapped SUN raster.
872 */
873 sun_info.depth=8;
874 sun_info.length=(unsigned int) number_pixels;
875 sun_info.length+=(unsigned int) (image->columns & 0x01 ? image->rows :
876 0);
877 sun_info.maptype=RMT_EQUAL_RGB;
878 sun_info.maplength=(unsigned int) (3*image->colors);
879 }
880 /*
881 Write SUN header.
882 */
883 (void) WriteBlobMSBLong(image,sun_info.magic);
884 (void) WriteBlobMSBLong(image,sun_info.width);
885 (void) WriteBlobMSBLong(image,sun_info.height);
886 (void) WriteBlobMSBLong(image,sun_info.depth);
887 (void) WriteBlobMSBLong(image,sun_info.length);
888 (void) WriteBlobMSBLong(image,sun_info.type);
889 (void) WriteBlobMSBLong(image,sun_info.maptype);
890 (void) WriteBlobMSBLong(image,sun_info.maplength);
891 /*
892 Convert MIFF to SUN raster pixels.
893 */
894 x=0;
895 y=0;
896 if (image->storage_class == DirectClass)
897 {
898 register unsigned char
899 *q;
900
901 size_t
902 bytes_per_pixel,
903 length;
904
905 unsigned char
906 *pixels;
907
908 /*
909 Allocate memory for pixels.
910 */
911 bytes_per_pixel=3;
912 if (image->alpha_trait != UndefinedPixelTrait)
913 bytes_per_pixel++;
914 length=image->columns;
915 pixels=(unsigned char *) AcquireQuantumMemory(length,4*sizeof(*pixels));
916 if (pixels == (unsigned char *) NULL)
917 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
918 /*
919 Convert DirectClass packet to SUN RGB pixel.
920 */
921 for (y=0; y < (ssize_t) image->rows; y++)
922 {
923 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
924 if (p == (const Quantum *) NULL)
925 break;
926 q=pixels;
927 for (x=0; x < (ssize_t) image->columns; x++)
928 {
929 if (image->alpha_trait != UndefinedPixelTrait)
930 *q++=ScaleQuantumToChar(GetPixelAlpha(image,p));
931 *q++=ScaleQuantumToChar(GetPixelRed(image,p));
932 *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
933 *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
934 p+=GetPixelChannels(image);
935 }
936 if (((bytes_per_pixel*image->columns) & 0x01) != 0)
937 *q++='\0'; /* pad scanline */
938 (void) WriteBlob(image,(size_t) (q-pixels),pixels);
939 if (image->previous == (Image *) NULL)
940 {
941 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
942 image->rows);
943 if (status == MagickFalse)
944 break;
945 }
946 }
947 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
948 }
949 else
950 if (SetImageMonochrome(image,exception) != MagickFalse)
951 {
952 register unsigned char
953 bit,
954 byte;
955
956 /*
957 Convert PseudoClass image to a SUN monochrome image.
958 */
959 (void) SetImageType(image,BilevelType,exception);
960 for (y=0; y < (ssize_t) image->rows; y++)
961 {
962 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
963 if (p == (const Quantum *) NULL)
964 break;
965 bit=0;
966 byte=0;
967 for (x=0; x < (ssize_t) image->columns; x++)
968 {
969 byte<<=1;
970 if (GetPixelLuma(image,p) < (QuantumRange/2.0))
971 byte|=0x01;
972 bit++;
973 if (bit == 8)
974 {
975 (void) WriteBlobByte(image,byte);
976 bit=0;
977 byte=0;
978 }
979 p+=GetPixelChannels(image);
980 }
981 if (bit != 0)
982 (void) WriteBlobByte(image,(unsigned char) (byte << (8-bit)));
983 if ((((image->columns/8)+
984 (image->columns % 8 ? 1 : 0)) % 2) != 0)
985 (void) WriteBlobByte(image,0); /* pad scanline */
986 if (image->previous == (Image *) NULL)
987 {
988 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
989 image->rows);
990 if (status == MagickFalse)
991 break;
992 }
993 }
994 }
995 else
996 {
997 /*
998 Dump colormap to file.
999 */
1000 for (i=0; i < (ssize_t) image->colors; i++)
1001 (void) WriteBlobByte(image,ScaleQuantumToChar(
1002 ClampToQuantum(image->colormap[i].red)));
1003 for (i=0; i < (ssize_t) image->colors; i++)
1004 (void) WriteBlobByte(image,ScaleQuantumToChar(
1005 ClampToQuantum(image->colormap[i].green)));
1006 for (i=0; i < (ssize_t) image->colors; i++)
1007 (void) WriteBlobByte(image,ScaleQuantumToChar(
1008 ClampToQuantum(image->colormap[i].blue)));
1009 /*
1010 Convert PseudoClass packet to SUN colormapped pixel.
1011 */
1012 for (y=0; y < (ssize_t) image->rows; y++)
1013 {
1014 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
1015 if (p == (const Quantum *) NULL)
1016 break;
1017 for (x=0; x < (ssize_t) image->columns; x++)
1018 {
1019 (void) WriteBlobByte(image,(unsigned char)
1020 GetPixelIndex(image,p));
1021 p+=GetPixelChannels(image);
1022 }
1023 if (image->columns & 0x01)
1024 (void) WriteBlobByte(image,0); /* pad scanline */
1025 if (image->previous == (Image *) NULL)
1026 {
1027 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1028 image->rows);
1029 if (status == MagickFalse)
1030 break;
1031 }
1032 }
1033 }
1034 if (GetNextImageInList(image) == (Image *) NULL)
1035 break;
1036 image=SyncNextImageInList(image);
1037 status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
1038 if (status == MagickFalse)
1039 break;
1040 } while (image_info->adjoin != MagickFalse);
1041 (void) CloseBlob(image);
1042 return(MagickTrue);
1043 }
1044