MagickCore 6.9.13-6
Convert, Edit, Or Compose Bitmap Images
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attribute.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% AAA TTTTT TTTTT RRRR IIIII BBBB U U TTTTT EEEEE %
7% A A T T R R I B B U U T E %
8% AAAAA T T RRRR I BBBB U U T EEE %
9% A A T T R R I B B U U T E %
10% A A T T R R IIIII BBBB UUU T EEEEE %
11% %
12% %
13% MagickCore Get / Set Image Attributes %
14% %
15% Software Design %
16% Cristy %
17% October 2002 %
18% %
19% %
20% Copyright 1999 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/*
41 Include declarations.
42*/
43#include "magick/studio.h"
44#include "magick/artifact.h"
45#include "magick/attribute.h"
46#include "magick/blob.h"
47#include "magick/blob-private.h"
48#include "magick/cache.h"
49#include "magick/cache-private.h"
50#include "magick/cache-view.h"
51#include "magick/client.h"
52#include "magick/channel.h"
53#include "magick/color.h"
54#include "magick/color-private.h"
55#include "magick/colormap.h"
56#include "magick/colormap-private.h"
57#include "magick/colorspace.h"
58#include "magick/colorspace-private.h"
59#include "magick/composite.h"
60#include "magick/composite-private.h"
61#include "magick/constitute.h"
62#include "magick/deprecate.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/effect.h"
66#include "magick/enhance.h"
67#include "magick/exception.h"
68#include "magick/exception-private.h"
69#include "magick/geometry.h"
70#include "magick/histogram.h"
71#include "magick/identify.h"
72#include "magick/image.h"
73#include "magick/image-private.h"
74#include "magick/list.h"
75#include "magick/log.h"
76#include "magick/memory_.h"
77#include "magick/magick.h"
78#include "magick/monitor.h"
79#include "magick/monitor-private.h"
80#include "magick/option.h"
81#include "magick/paint.h"
82#include "magick/pixel.h"
83#include "magick/pixel-private.h"
84#include "magick/property.h"
85#include "magick/quantize.h"
86#include "magick/random_.h"
87#include "magick/resource_.h"
88#include "magick/semaphore.h"
89#include "magick/segment.h"
90#include "magick/splay-tree.h"
91#include "magick/string_.h"
92#include "magick/string-private.h"
93#include "magick/thread-private.h"
94#include "magick/threshold.h"
95#include "magick/transform.h"
96#include "magick/utility.h"
97
98/*
99%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
100% %
101% %
102% %
103+ G e t I m a g e B o u n d i n g B o x %
104% %
105% %
106% %
107%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
108%
109% GetImageBoundingBox() returns the bounding box of an image canvas.
110%
111% The format of the GetImageBoundingBox method is:
112%
113% RectangleInfo GetImageBoundingBox(const Image *image,
114% ExceptionInfo *exception)
115%
116% A description of each parameter follows:
117%
118% o bounds: Method GetImageBoundingBox returns the bounding box of an
119% image canvas.
120%
121% o image: the image.
122%
123% o exception: return any errors or warnings in this structure.
124%
125*/
126
127typedef struct _CensusInfo
128{
129 double
130 left,
131 right,
132 top,
133 bottom;
134} CensusInfo;
135
136static double GetEdgeBackgroundCensus(const Image *image,
137 const CacheView *image_view,const GravityType gravity,const size_t width,
138 const size_t height,const ssize_t x_offset,const ssize_t y_offset,
139 ExceptionInfo *exception)
140{
142 *edge_view;
143
144 const char
145 *artifact;
146
147 const PixelPacket
148 *p;
149
150 double
151 census;
152
153 Image
154 *edge_image;
155
157 background,
158 pixel;
159
161 edge_geometry;
162
163 ssize_t
164 y;
165
166 /*
167 Determine the percent of image background for this edge.
168 */
169 switch (gravity)
170 {
171 case NorthWestGravity:
172 case NorthGravity:
173 default:
174 {
175 p=GetCacheViewVirtualPixels(image_view,0,0,1,1,exception);
176 break;
177 }
178 case NorthEastGravity:
179 case EastGravity:
180 {
181 p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,0,1,1,
182 exception);
183 break;
184 }
185 case SouthEastGravity:
186 case SouthGravity:
187 {
188 p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,
189 (ssize_t) image->rows-1,1,1,exception);
190 break;
191 }
192 case SouthWestGravity:
193 case WestGravity:
194 {
195 p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-1,1,1,
196 exception);
197 break;
198 }
199 }
200 if (p == (const PixelPacket *) NULL)
201 return(0.0);
202 GetMagickPixelPacket(image,&background);
203 SetMagickPixelPacket(image,p,(IndexPacket *) NULL,&background);
204 artifact=GetImageArtifact(image,"background");
205 if (artifact != (const char *) NULL)
206 (void) QueryMagickColor(artifact,&background,exception);
207 artifact=GetImageArtifact(image,"trim:background-color");
208 if (artifact != (const char *) NULL)
209 (void) QueryMagickColor(artifact,&background,exception);
210 edge_geometry.width=width;
211 edge_geometry.height=height;
212 edge_geometry.x=x_offset;
213 edge_geometry.y=y_offset;
214 GravityAdjustGeometry(image->columns,image->rows,gravity,&edge_geometry);
215 edge_image=CropImage(image,&edge_geometry,exception);
216 if (edge_image == (Image *) NULL)
217 return(0.0);
218 census=0.0;
219 GetMagickPixelPacket(edge_image,&pixel);
220 edge_view=AcquireVirtualCacheView(edge_image,exception);
221 for (y=0; y < (ssize_t) edge_image->rows; y++)
222 {
223 ssize_t
224 x;
225
226 p=GetCacheViewVirtualPixels(edge_view,0,y,edge_image->columns,1,exception);
227 if (p == (const PixelPacket *) NULL)
228 break;
229 for (x=0; x < (ssize_t) edge_image->columns; x++)
230 {
231 SetMagickPixelPacket(edge_image,p,(IndexPacket *) NULL,&pixel);
232 if (IsMagickColorSimilar(&pixel,&background) == MagickFalse)
233 census++;
234 p++;
235 }
236 }
237 census/=((double) edge_image->columns*edge_image->rows);
238 edge_view=DestroyCacheView(edge_view);
239 edge_image=DestroyImage(edge_image);
240 return(census);
241}
242
243static inline double GetMinEdgeBackgroundCensus(const CensusInfo *edge)
244{
245 double
246 census;
247
248 census=MagickMin(MagickMin(MagickMin(edge->left,edge->right),edge->top),
249 edge->bottom);
250 return(census);
251}
252
253static RectangleInfo GetEdgeBoundingBox(const Image *image,
254 ExceptionInfo *exception)
255{
257 *edge_view;
258
260 edge,
261 vertex;
262
263 const char
264 *artifact;
265
266 double
267 background_census,
268 percent_background;
269
270 Image
271 *edge_image;
272
274 bounds;
275
276 /*
277 Get the image bounding box.
278 */
279 assert(image != (Image *) NULL);
280 assert(image->signature == MagickCoreSignature);
281 if (IsEventLogging() != MagickFalse)
282 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
283 SetGeometry(image,&bounds);
284 edge_image=CloneImage(image,0,0,MagickTrue,exception);
285 if (edge_image == (Image *) NULL)
286 return(bounds);
287 (void) ParseAbsoluteGeometry("0x0+0+0",&edge_image->page);
288 (void) memset(&vertex,0,sizeof(vertex));
289 edge_view=AcquireVirtualCacheView(edge_image,exception);
290 edge.left=GetEdgeBackgroundCensus(edge_image,edge_view,WestGravity,
291 1,0,0,0,exception);
292 edge.right=GetEdgeBackgroundCensus(edge_image,edge_view,EastGravity,
293 1,0,0,0,exception);
294 edge.top=GetEdgeBackgroundCensus(edge_image,edge_view,NorthGravity,
295 0,1,0,0,exception);
296 edge.bottom=GetEdgeBackgroundCensus(edge_image,edge_view,SouthGravity,
297 0,1,0,0,exception);
298 percent_background=1.0;
299 artifact=GetImageArtifact(edge_image,"trim:percent-background");
300 if (artifact != (const char *) NULL)
301 percent_background=StringToDouble(artifact,(char **) NULL)/100.0;
302 percent_background=MagickMin(MagickMax(1.0-percent_background,MagickEpsilon),
303 1.0);
304 background_census=GetMinEdgeBackgroundCensus(&edge);
305 for ( ; background_census < percent_background;
306 background_census=GetMinEdgeBackgroundCensus(&edge))
307 {
308 if ((bounds.width == 0) || (bounds.height == 0))
309 break;
310 if (fabs(edge.left-background_census) < MagickEpsilon)
311 {
312 /*
313 Trim left edge.
314 */
315 vertex.left++;
316 bounds.width--;
317 edge.left=GetEdgeBackgroundCensus(edge_image,edge_view,
318 NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
319 vertex.top,exception);
320 edge.top=GetEdgeBackgroundCensus(edge_image,edge_view,
321 NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
322 vertex.top,exception);
323 edge.bottom=GetEdgeBackgroundCensus(edge_image,edge_view,
324 SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
325 vertex.bottom,exception);
326 continue;
327 }
328 if (fabs(edge.right-background_census) < MagickEpsilon)
329 {
330 /*
331 Trim right edge.
332 */
333 vertex.right++;
334 bounds.width--;
335 edge.right=GetEdgeBackgroundCensus(edge_image,edge_view,
336 NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
337 vertex.top,exception);
338 edge.top=GetEdgeBackgroundCensus(edge_image,edge_view,
339 NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
340 vertex.top,exception);
341 edge.bottom=GetEdgeBackgroundCensus(edge_image,edge_view,
342 SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
343 vertex.bottom,exception);
344 continue;
345 }
346 if (fabs(edge.top-background_census) < MagickEpsilon)
347 {
348 /*
349 Trim top edge.
350 */
351 vertex.top++;
352 bounds.height--;
353 edge.left=GetEdgeBackgroundCensus(edge_image,edge_view,
354 NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
355 vertex.top,exception);
356 edge.right=GetEdgeBackgroundCensus(edge_image,edge_view,
357 NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
358 vertex.top,exception);
359 edge.top=GetEdgeBackgroundCensus(edge_image,edge_view,
360 NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
361 vertex.top,exception);
362 continue;
363 }
364 if (fabs(edge.bottom-background_census) < MagickEpsilon)
365 {
366 /*
367 Trim bottom edge.
368 */
369 vertex.bottom++;
370 bounds.height--;
371 edge.left=GetEdgeBackgroundCensus(edge_image,edge_view,
372 NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
373 vertex.top,exception);
374 edge.right=GetEdgeBackgroundCensus(edge_image,edge_view,
375 NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
376 vertex.top,exception);
377 edge.bottom=GetEdgeBackgroundCensus(edge_image,edge_view,
378 SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
379 vertex.bottom,exception);
380 continue;
381 }
382 }
383 edge_view=DestroyCacheView(edge_view);
384 edge_image=DestroyImage(edge_image);
385 bounds.x=(ssize_t) vertex.left;
386 bounds.y=(ssize_t) vertex.top;
387 if ((bounds.width == 0) || (bounds.height == 0))
388 (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
389 "GeometryDoesNotContainImage","`%s'",image->filename);
390 return(bounds);
391}
392
393MagickExport RectangleInfo GetImageBoundingBox(const Image *image,
394 ExceptionInfo *exception)
395{
397 *image_view;
398
399 const char
400 *artifact;
401
402 MagickBooleanType
403 status;
404
406 target[4],
407 zero;
408
410 bounds;
411
412 const PixelPacket
413 *p;
414
415 ssize_t
416 y;
417
418 assert(image != (Image *) NULL);
419 assert(image->signature == MagickCoreSignature);
420 if (IsEventLogging() != MagickFalse)
421 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
422 artifact=GetImageArtifact(image,"trim:percent-background");
423 if (artifact != (const char *) NULL)
424 return(GetEdgeBoundingBox(image,exception));
425 bounds.width=image->columns == 1 ? 1 : 0;
426 bounds.height=image->rows == 1 ? 1 : 0;
427 bounds.x=(ssize_t) image->columns;
428 bounds.y=(ssize_t) image->rows;
429 GetMagickPixelPacket(image,&target[0]);
430 image_view=AcquireVirtualCacheView(image,exception);
431 p=GetCacheViewVirtualPixels(image_view,0,0,1,1,exception);
432 if (p == (const PixelPacket *) NULL)
433 {
434 image_view=DestroyCacheView(image_view);
435 return(bounds);
436 }
437 SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
438 &target[0]);
439 GetMagickPixelPacket(image,&target[1]);
440 p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,0,1,1,
441 exception);
442 if (p != (const PixelPacket *) NULL)
443 SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
444 &target[1]);
445 GetMagickPixelPacket(image,&target[2]);
446 p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-1,1,1,
447 exception);
448 if (p != (const PixelPacket *) NULL)
449 SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
450 &target[2]);
451 GetMagickPixelPacket(image,&target[3]);
452 p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,
453 (ssize_t) image->rows-1,1,1,exception);
454 if (p != (const PixelPacket *) NULL)
455 SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
456 &target[3]);
457 status=MagickTrue;
458 GetMagickPixelPacket(image,&zero);
459#if defined(MAGICKCORE_OPENMP_SUPPORT)
460 #pragma omp parallel for schedule(static) shared(status) \
461 magick_number_threads(image,image,image->rows,2)
462#endif
463 for (y=0; y < (ssize_t) image->rows; y++)
464 {
466 pixel;
467
469 bounding_box;
470
471 const IndexPacket
472 *magick_restrict indexes;
473
474 const PixelPacket
475 *magick_restrict p;
476
477 ssize_t
478 x;
479
480 if (status == MagickFalse)
481 continue;
482#if defined(MAGICKCORE_OPENMP_SUPPORT)
483# pragma omp critical (MagickCore_GetImageBoundingBox)
484#endif
485 bounding_box=bounds;
486 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
487 if (p == (const PixelPacket *) NULL)
488 {
489 status=MagickFalse;
490 continue;
491 }
492 indexes=GetCacheViewVirtualIndexQueue(image_view);
493 pixel=zero;
494 for (x=0; x < (ssize_t) image->columns; x++)
495 {
496 SetMagickPixelPacket(image,p,indexes+x,&pixel);
497 if ((x < bounding_box.x) &&
498 (IsMagickColorSimilar(&pixel,&target[0]) == MagickFalse))
499 bounding_box.x=x;
500 if ((x > (ssize_t) bounding_box.width) &&
501 (IsMagickColorSimilar(&pixel,&target[1]) == MagickFalse))
502 bounding_box.width=(size_t) x;
503 if ((y < bounding_box.y) &&
504 (IsMagickColorSimilar(&pixel,&target[0]) == MagickFalse))
505 bounding_box.y=y;
506 if ((y > (ssize_t) bounding_box.height) &&
507 (IsMagickColorSimilar(&pixel,&target[2]) == MagickFalse))
508 bounding_box.height=(size_t) y;
509 if ((x < (ssize_t) bounding_box.width) &&
510 (y > (ssize_t) bounding_box.height) &&
511 (IsMagickColorSimilar(&pixel,&target[3]) == MagickFalse))
512 {
513 bounding_box.width=(size_t) x;
514 bounding_box.height=(size_t) y;
515 }
516 p++;
517 }
518#if defined(MAGICKCORE_OPENMP_SUPPORT)
519# pragma omp critical (MagickCore_GetImageBoundingBox)
520#endif
521 {
522 if (bounding_box.x < bounds.x)
523 bounds.x=bounding_box.x;
524 if (bounding_box.y < bounds.y)
525 bounds.y=bounding_box.y;
526 if (bounding_box.width > bounds.width)
527 bounds.width=bounding_box.width;
528 if (bounding_box.height > bounds.height)
529 bounds.height=bounding_box.height;
530 }
531 }
532 image_view=DestroyCacheView(image_view);
533 if ((bounds.width == 0) || (bounds.height == 0))
534 (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
535 "GeometryDoesNotContainImage","`%s'",image->filename);
536 else
537 {
538 bounds.width-=(size_t) (bounds.x-1);
539 bounds.height-=(size_t) (bounds.y-1);
540 }
541 return(bounds);
542}
543
544/*
545%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
546% %
547% %
548% %
549% G e t I m a g e C h a n n e l D e p t h %
550% %
551% %
552% %
553%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
554%
555% GetImageChannelDepth() returns the depth of a particular image channel.
556%
557% The format of the GetImageChannelDepth method is:
558%
559% size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
560% size_t GetImageChannelDepth(const Image *image,
561% const ChannelType channel,ExceptionInfo *exception)
562%
563% A description of each parameter follows:
564%
565% o image: the image.
566%
567% o channel: the channel.
568%
569% o exception: return any errors or warnings in this structure.
570%
571*/
572MagickExport size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
573{
574 return(GetImageChannelDepth(image,CompositeChannels,exception));
575}
576
577MagickExport size_t GetImageChannelDepth(const Image *image,
578 const ChannelType channel,ExceptionInfo *exception)
579{
581 *image_view;
582
583 MagickBooleanType
584 status;
585
586 ssize_t
587 i;
588
589 size_t
590 *current_depth,
591 depth,
592 number_threads;
593
594 ssize_t
595 y;
596
597 /*
598 Compute image depth.
599 */
600 assert(image != (Image *) NULL);
601
602 assert(image->signature == MagickCoreSignature);
603 if (IsEventLogging() != MagickFalse)
604 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
605 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
606 current_depth=(size_t *) AcquireQuantumMemory(number_threads,
607 sizeof(*current_depth));
608 if (current_depth == (size_t *) NULL)
609 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
610 status=MagickTrue;
611 for (i=0; i < (ssize_t) number_threads; i++)
612 current_depth[i]=1;
613 if ((image->storage_class == PseudoClass) && (image->matte == MagickFalse))
614 {
615#if defined(MAGICKCORE_OPENMP_SUPPORT)
616 #pragma omp parallel for schedule(static) shared(status) \
617 magick_number_threads(image,image,image->colors,1)
618#endif
619 for (i=0; i < (ssize_t) image->colors; i++)
620 {
621 const int
622 id = GetOpenMPThreadId();
623
624 while (current_depth[id] < MAGICKCORE_QUANTUM_DEPTH)
625 {
626 MagickBooleanType
627 atDepth;
628
629 QuantumAny
630 range;
631
632 atDepth=MagickTrue;
633 range=GetQuantumRange(current_depth[id]);
634 if ((channel & RedChannel) != 0)
635 if (IsPixelAtDepth(image->colormap[i].red,range) == MagickFalse)
636 atDepth=MagickFalse;
637 if ((atDepth != MagickFalse) && ((channel & GreenChannel) != 0))
638 if (IsPixelAtDepth(image->colormap[i].green,range) == MagickFalse)
639 atDepth=MagickFalse;
640 if ((atDepth != MagickFalse) && ((channel & BlueChannel) != 0))
641 if (IsPixelAtDepth(image->colormap[i].blue,range) == MagickFalse)
642 atDepth=MagickFalse;
643 if ((atDepth != MagickFalse))
644 break;
645 current_depth[id]++;
646 }
647 }
648 depth=current_depth[0];
649 for (i=1; i < (ssize_t) number_threads; i++)
650 if (depth < current_depth[i])
651 depth=current_depth[i];
652 current_depth=(size_t *) RelinquishMagickMemory(current_depth);
653 return(depth);
654 }
655 image_view=AcquireVirtualCacheView(image,exception);
656#if !defined(MAGICKCORE_HDRI_SUPPORT)
657DisableMSCWarning(4127)
658 if (1UL*QuantumRange <= MaxMap)
659RestoreMSCWarning
660 {
661 size_t
662 *depth_map;
663
664 /*
665 Scale pixels to desired (optimized with depth map).
666 */
667 depth_map=(size_t *) AcquireQuantumMemory(MaxMap+1,sizeof(*depth_map));
668 if (depth_map == (size_t *) NULL)
669 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
670 for (i=0; i <= (ssize_t) MaxMap; i++)
671 {
672 unsigned int
673 depth;
674
675 for (depth=1; depth < MAGICKCORE_QUANTUM_DEPTH; depth++)
676 {
677 Quantum
678 pixel;
679
680 QuantumAny
681 range;
682
683 range=GetQuantumRange(depth);
684 pixel=(Quantum) i;
685 if (pixel == ScaleAnyToQuantum(ScaleQuantumToAny(pixel,range),range))
686 break;
687 }
688 depth_map[i]=depth;
689 }
690#if defined(MAGICKCORE_OPENMP_SUPPORT)
691 #pragma omp parallel for schedule(static) shared(status) \
692 magick_number_threads(image,image,image->rows,1)
693#endif
694 for (y=0; y < (ssize_t) image->rows; y++)
695 {
696 const int
697 id = GetOpenMPThreadId();
698
699 const IndexPacket
700 *magick_restrict indexes;
701
702 const PixelPacket
703 *magick_restrict p;
704
705 ssize_t
706 x;
707
708 if (status == MagickFalse)
709 continue;
710 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
711 if (p == (const PixelPacket *) NULL)
712 continue;
713 indexes=GetCacheViewVirtualIndexQueue(image_view);
714 for (x=0; x < (ssize_t) image->columns; x++)
715 {
716 Quantum
717 pixel;
718
719 if ((channel & RedChannel) != 0)
720 {
721 pixel=GetPixelRed(p);
722 if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
723 current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
724 }
725 if ((channel & GreenChannel) != 0)
726 {
727 pixel=GetPixelGreen(p);
728 if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
729 current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
730 }
731 if ((channel & BlueChannel) != 0)
732 {
733 pixel=GetPixelBlue(p);
734 if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
735 current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
736 }
737 if (((channel & OpacityChannel) != 0) &&
738 (image->matte != MagickFalse))
739 {
740 pixel=GetPixelOpacity(p);
741 if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
742 current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
743 }
744 if (((channel & IndexChannel) != 0) &&
745 (image->colorspace == CMYKColorspace))
746 {
747 pixel=GetPixelIndex(indexes+x);
748 if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
749 current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
750 }
751 p++;
752 }
753 if (current_depth[id] == MAGICKCORE_QUANTUM_DEPTH)
754 status=MagickFalse;
755 }
756 image_view=DestroyCacheView(image_view);
757 depth=current_depth[0];
758 for (i=1; i < (ssize_t) number_threads; i++)
759 if (depth < current_depth[i])
760 depth=current_depth[i];
761 depth_map=(size_t *) RelinquishMagickMemory(depth_map);
762 current_depth=(size_t *) RelinquishMagickMemory(current_depth);
763 return(depth);
764 }
765#endif
766#if defined(MAGICKCORE_OPENMP_SUPPORT)
767 #pragma omp parallel for schedule(static) shared(status) \
768 magick_number_threads(image,image,image->rows,1)
769#endif
770 for (y=0; y < (ssize_t) image->rows; y++)
771 {
772 const int
773 id = GetOpenMPThreadId();
774
775 const IndexPacket
776 *magick_restrict indexes;
777
778 const PixelPacket
779 *magick_restrict p;
780
781 ssize_t
782 x;
783
784 if (status == MagickFalse)
785 continue;
786 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
787 if (p == (const PixelPacket *) NULL)
788 continue;
789 indexes=GetCacheViewVirtualIndexQueue(image_view);
790 for (x=0; x < (ssize_t) image->columns; x++)
791 {
792 while (current_depth[id] < MAGICKCORE_QUANTUM_DEPTH)
793 {
794 MagickBooleanType
795 atDepth;
796
797 QuantumAny
798 range;
799
800 atDepth=MagickTrue;
801 range=GetQuantumRange(current_depth[id]);
802 if ((atDepth != MagickFalse) && ((channel & RedChannel) != 0))
803 if (IsPixelAtDepth(GetPixelRed(p),range) == MagickFalse)
804 atDepth=MagickFalse;
805 if ((atDepth != MagickFalse) && ((channel & GreenChannel) != 0))
806 if (IsPixelAtDepth(GetPixelGreen(p),range) == MagickFalse)
807 atDepth=MagickFalse;
808 if ((atDepth != MagickFalse) && ((channel & BlueChannel) != 0))
809 if (IsPixelAtDepth(GetPixelBlue(p),range) == MagickFalse)
810 atDepth=MagickFalse;
811 if ((atDepth != MagickFalse) && ((channel & OpacityChannel) != 0) &&
812 (image->matte != MagickFalse))
813 if (IsPixelAtDepth(GetPixelOpacity(p),range) == MagickFalse)
814 atDepth=MagickTrue;
815 if ((atDepth != MagickFalse) && ((channel & IndexChannel) != 0) &&
816 (image->colorspace == CMYKColorspace))
817 if (IsPixelAtDepth(GetPixelIndex(indexes+x),range) == MagickFalse)
818 atDepth=MagickFalse;
819 if ((atDepth != MagickFalse))
820 break;
821 current_depth[id]++;
822 }
823 p++;
824 }
825 if (current_depth[id] == MAGICKCORE_QUANTUM_DEPTH)
826 status=MagickFalse;
827 }
828 image_view=DestroyCacheView(image_view);
829 depth=current_depth[0];
830 for (i=1; i < (ssize_t) number_threads; i++)
831 if (depth < current_depth[i])
832 depth=current_depth[i];
833 current_depth=(size_t *) RelinquishMagickMemory(current_depth);
834 return(depth);
835}
836
837/*
838%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
839% %
840% %
841% %
842% G e t I m a g e Q u a n t u m D e p t h %
843% %
844% %
845% %
846%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
847%
848% GetImageQuantumDepth() returns the depth of the image rounded to a legal
849% quantum depth: 8, 16, or 32.
850%
851% The format of the GetImageQuantumDepth method is:
852%
853% size_t GetImageQuantumDepth(const Image *image,
854% const MagickBooleanType constrain)
855%
856% A description of each parameter follows:
857%
858% o image: the image.
859%
860% o constrain: A value other than MagickFalse, constrains the depth to
861% a maximum of MAGICKCORE_QUANTUM_DEPTH.
862%
863*/
864MagickExport size_t GetImageQuantumDepth(const Image *image,
865 const MagickBooleanType constrain)
866{
867 size_t
868 depth;
869
870 depth=image->depth;
871 if (depth <= 8)
872 depth=8;
873 else
874 if (depth <= 16)
875 depth=16;
876 else
877 if (depth <= 32)
878 depth=32;
879 else
880 if (depth <= 64)
881 depth=64;
882 if (constrain != MagickFalse)
883 depth=(size_t) MagickMin((double) depth,(double) MAGICKCORE_QUANTUM_DEPTH);
884 return(depth);
885}
886
887/*
888%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
889% %
890% %
891% %
892% G e t I m a g e T y p e %
893% %
894% %
895% %
896%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
897%
898% GetImageType() returns the potential type of image:
899%
900% Bilevel Grayscale GrayscaleMatte
901% Palette PaletteMatte TrueColor
902% TrueColorMatte ColorSeparation ColorSeparationMatte
903%
904% To ensure the image type matches its potential, use SetImageType():
905%
906% (void) SetImageType(image,GetImageType(image));
907%
908% The format of the GetImageType method is:
909%
910% ImageType GetImageType(const Image *image,ExceptionInfo *exception)
911%
912% A description of each parameter follows:
913%
914% o image: the image.
915%
916% o exception: return any errors or warnings in this structure.
917%
918*/
919MagickExport ImageType GetImageType(const Image *image,ExceptionInfo *exception)
920{
921 assert(image != (Image *) NULL);
922 assert(image->signature == MagickCoreSignature);
923 if (IsEventLogging() != MagickFalse)
924 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
925 if (image->colorspace == CMYKColorspace)
926 {
927 if (image->matte == MagickFalse)
928 return(ColorSeparationType);
929 return(ColorSeparationMatteType);
930 }
931 if (IsMonochromeImage(image,exception) != MagickFalse)
932 return(BilevelType);
933 if (IsGrayImage(image,exception) != MagickFalse)
934 {
935 if (image->matte != MagickFalse)
936 return(GrayscaleMatteType);
937 return(GrayscaleType);
938 }
939 if (IsPaletteImage(image,exception) != MagickFalse)
940 {
941 if (image->matte != MagickFalse)
942 return(PaletteMatteType);
943 return(PaletteType);
944 }
945 if (image->matte != MagickFalse)
946 return(TrueColorMatteType);
947 return(TrueColorType);
948}
949
950/*
951%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
952% %
953% %
954% %
955% I d e n t i f y I m a g e G r a y %
956% %
957% %
958% %
959%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
960%
961% either 0 or QuantumRange. Otherwise undefined is returned.
962%
963% The format of the IdentifyImageGray method is:
964%
965% ImageType IdentifyImageGray(const Image *image,ExceptionInfo *exception)
966%
967% A description of each parameter follows:
968%
969% o image: the image.
970%
971% o exception: return any errors or warnings in this structure.
972%
973*/
974MagickExport ImageType IdentifyImageGray(const Image *image,
975 ExceptionInfo *exception)
976{
978 *image_view;
979
980 ImageType
981 type = BilevelType;
982
983 ssize_t
984 y;
985
986 assert(image != (Image *) NULL);
987 assert(image->signature == MagickCoreSignature);
988 if (IsEventLogging() != MagickFalse)
989 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
990 if ((image->type == BilevelType) || (image->type == GrayscaleType) ||
991 (image->type == GrayscaleMatteType))
992 return(image->type);
993 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
994 return(UndefinedType);
995 image_view=AcquireVirtualCacheView(image,exception);
996#if defined(MAGICKCORE_OPENMP_SUPPORT)
997 #pragma omp parallel for schedule(static) shared(type) \
998 magick_number_threads(image,image,image->rows,2)
999#endif
1000 for (y=0; y < (ssize_t) image->rows; y++)
1001 {
1002 const PixelPacket
1003 *p;
1004
1005 ssize_t
1006 x;
1007
1008 if (type == UndefinedType)
1009 continue;
1010 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1011 if (p == (const PixelPacket *) NULL)
1012 {
1013 type=UndefinedType;
1014 continue;
1015 }
1016 for (x=0; x < (ssize_t) image->columns; x++)
1017 {
1018 if (IsPixelGray(p) == MagickFalse)
1019 {
1020 type=UndefinedType;
1021 break;
1022 }
1023 if ((type == BilevelType) && (IsPixelMonochrome(p) == MagickFalse))
1024 type=GrayscaleType;
1025 p++;
1026 }
1027 }
1028 image_view=DestroyCacheView(image_view);
1029 if ((type == GrayscaleType) && (image->matte != MagickFalse))
1030 type=GrayscaleMatteType;
1031 return(type);
1032}
1033
1034/*
1035%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1036% %
1037% %
1038% %
1039% I d e n t i f y I m a g e M o n o c h r o m e %
1040% %
1041% %
1042% %
1043%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1044%
1045% IdentifyImageMonochrome() returns MagickTrue if all the pixels in the image
1046% have the same red, green, and blue intensities and the intensity is either
1047% 0 or QuantumRange.
1048%
1049% The format of the IdentifyImageMonochrome method is:
1050%
1051% MagickBooleanType IdentifyImageMonochrome(const Image *image,
1052% ExceptionInfo *exception)
1053%
1054% A description of each parameter follows:
1055%
1056% o image: the image.
1057%
1058% o exception: return any errors or warnings in this structure.
1059%
1060*/
1061MagickExport MagickBooleanType IdentifyImageMonochrome(const Image *image,
1062 ExceptionInfo *exception)
1063{
1064 CacheView
1065 *image_view;
1066
1067 ImageType
1068 type = BilevelType;
1069
1070 ssize_t
1071 y;
1072
1073 assert(image != (Image *) NULL);
1074 assert(image->signature == MagickCoreSignature);
1075 if (IsEventLogging() != MagickFalse)
1076 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1077 if (image->type == BilevelType)
1078 return(MagickTrue);
1079 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1080 return(MagickFalse);
1081 image_view=AcquireVirtualCacheView(image,exception);
1082#if defined(MAGICKCORE_OPENMP_SUPPORT)
1083 #pragma omp parallel for schedule(static) shared(type) \
1084 magick_number_threads(image,image,image->rows,2)
1085#endif
1086 for (y=0; y < (ssize_t) image->rows; y++)
1087 {
1088 const PixelPacket
1089 *p;
1090
1091 ssize_t
1092 x;
1093
1094 if (type == UndefinedType)
1095 continue;
1096 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1097 if (p == (const PixelPacket *) NULL)
1098 {
1099 type=UndefinedType;
1100 continue;
1101 }
1102 for (x=0; x < (ssize_t) image->columns; x++)
1103 {
1104 if (IsPixelMonochrome(p) == MagickFalse)
1105 {
1106 type=UndefinedType;
1107 break;
1108 }
1109 p++;
1110 }
1111 }
1112 image_view=DestroyCacheView(image_view);
1113 return(type == BilevelType ? MagickTrue : MagickFalse);
1114}
1115
1116/*
1117%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1118% %
1119% %
1120% %
1121% I d e n t i f y I m a g e T y p e %
1122% %
1123% %
1124% %
1125%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1126%
1127% IdentifyImageType() returns the potential type of image:
1128%
1129% Bilevel Grayscale GrayscaleMatte
1130% Palette PaletteMatte TrueColor
1131% TrueColorMatte ColorSeparation ColorSeparationMatte
1132%
1133% To ensure the image type matches its potential, use SetImageType():
1134%
1135% (void) SetImageType(image,IdentifyImageType(image,exception),exception);
1136%
1137% The format of the IdentifyImageType method is:
1138%
1139% ImageType IdentifyImageType(const Image *image,ExceptionInfo *exception)
1140%
1141% A description of each parameter follows:
1142%
1143% o image: the image.
1144%
1145% o exception: return any errors or warnings in this structure.
1146%
1147*/
1148MagickExport ImageType IdentifyImageType(const Image *image,
1149 ExceptionInfo *exception)
1150{
1151 assert(image != (Image *) NULL);
1152 assert(image->signature == MagickCoreSignature);
1153 if (IsEventLogging() != MagickFalse)
1154 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1155 if (image->colorspace == CMYKColorspace)
1156 {
1157 if (image->matte == MagickFalse)
1158 return(ColorSeparationType);
1159 return(ColorSeparationMatteType);
1160 }
1161 if (IdentifyImageMonochrome(image,exception) != MagickFalse)
1162 return(BilevelType);
1163 if (IdentifyImageGray(image,exception) != UndefinedType)
1164 {
1165 if (image->matte != MagickFalse)
1166 return(GrayscaleMatteType);
1167 return(GrayscaleType);
1168 }
1169 if (IdentifyPaletteImage(image,exception) != MagickFalse)
1170 {
1171 if (image->matte != MagickFalse)
1172 return(PaletteMatteType);
1173 return(PaletteType);
1174 }
1175 if (image->matte != MagickFalse)
1176 return(TrueColorMatteType);
1177 return(TrueColorType);
1178}
1179
1180/*
1181%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1182% %
1183% %
1184% %
1185% I s G r a y I m a g e %
1186% %
1187% %
1188% %
1189%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1190%
1191% IsGrayImage() returns MagickTrue if the type of the image is grayscale or
1192% bi-level.
1193%
1194% The format of the IsGrayImage method is:
1195%
1196% MagickBooleanType IsGrayImage(const Image *image,
1197% ExceptionInfo *exception)
1198%
1199% A description of each parameter follows:
1200%
1201% o image: the image.
1202%
1203% o exception: return any errors or warnings in this structure.
1204%
1205*/
1206MagickExport MagickBooleanType IsGrayImage(const Image *image,
1207 ExceptionInfo *magick_unused(exception))
1208{
1209 assert(image != (Image *) NULL);
1210 assert(image->signature == MagickCoreSignature);
1211 magick_unreferenced(exception);
1212 if ((image->type == BilevelType) || (image->type == GrayscaleType) ||
1213 (image->type == GrayscaleMatteType))
1214 return(MagickTrue);
1215 return(MagickFalse);
1216}
1217
1218/*
1219%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1220% %
1221% %
1222% %
1223% I s M o n o c h r o m e I m a g e %
1224% %
1225% %
1226% %
1227%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1228%
1229% IsMonochromeImage() returns MagickTrue if type of the image is bi-level.
1230%
1231% The format of the IsMonochromeImage method is:
1232%
1233% MagickBooleanType IsMonochromeImage(const Image *image,
1234% ExceptionInfo *exception)
1235%
1236% A description of each parameter follows:
1237%
1238% o image: the image.
1239%
1240% o exception: return any errors or warnings in this structure.
1241%
1242*/
1243MagickExport MagickBooleanType IsMonochromeImage(const Image *image,
1244 ExceptionInfo *magick_unused(exception))
1245{
1246 assert(image != (Image *) NULL);
1247 assert(image->signature == MagickCoreSignature);
1248 magick_unreferenced(exception);
1249 if (image->type == BilevelType)
1250 return(MagickTrue);
1251 return(MagickFalse);
1252}
1253
1254/*
1255%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1256% %
1257% %
1258% %
1259% I s O p a q u e I m a g e %
1260% %
1261% %
1262% %
1263%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1264%
1265% IsOpaqueImage() returns MagickTrue if none of the pixels in the image have
1266% an opacity value other than opaque (0).
1267%
1268% The format of the IsOpaqueImage method is:
1269%
1270% MagickBooleanType IsOpaqueImage(const Image *image,
1271% ExceptionInfo *exception)
1272%
1273% A description of each parameter follows:
1274%
1275% o image: the image.
1276%
1277% o exception: return any errors or warnings in this structure.
1278%
1279*/
1280MagickExport MagickBooleanType IsOpaqueImage(const Image *image,
1281 ExceptionInfo *exception)
1282{
1283 CacheView
1284 *image_view;
1285
1286 MagickBooleanType
1287 opaque = MagickTrue;
1288
1289 ssize_t
1290 y;
1291
1292 /*
1293 Determine if image is opaque.
1294 */
1295 assert(image != (Image *) NULL);
1296 assert(image->signature == MagickCoreSignature);
1297 if (IsEventLogging() != MagickFalse)
1298 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1299 if (image->matte == MagickFalse)
1300 return(MagickTrue);
1301 image_view=AcquireVirtualCacheView(image,exception);
1302#if defined(MAGICKCORE_OPENMP_SUPPORT)
1303 #pragma omp parallel for schedule(static) shared(opaque) \
1304 magick_number_threads(image,image,image->rows,2)
1305#endif
1306 for (y=0; y < (ssize_t) image->rows; y++)
1307 {
1308 const PixelPacket
1309 *p;
1310
1311 ssize_t
1312 x;
1313
1314 if (opaque == MagickFalse)
1315 continue;
1316 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1317 if (p == (const PixelPacket *) NULL)
1318 {
1319 opaque=MagickFalse;
1320 continue;
1321 }
1322 for (x=0; x < (ssize_t) image->columns; x++)
1323 {
1324 if (GetPixelOpacity(p) != OpaqueOpacity)
1325 {
1326 opaque=MagickFalse;
1327 break;
1328 }
1329 p++;
1330 }
1331 }
1332 image_view=DestroyCacheView(image_view);
1333 return(opaque);
1334}
1335
1336/*
1337%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1338% %
1339% %
1340% %
1341% S e t I m a g e C h a n n e l D e p t h %
1342% %
1343% %
1344% %
1345%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1346%
1347% SetImageChannelDepth() sets the depth of the image.
1348%
1349% The format of the SetImageChannelDepth method is:
1350%
1351% MagickBooleanType SetImageDepth(Image *image,const size_t depth)
1352% MagickBooleanType SetImageChannelDepth(Image *image,
1353% const ChannelType channel,const size_t depth)
1354%
1355% A description of each parameter follows:
1356%
1357% o image: the image.
1358%
1359% o channel: the channel.
1360%
1361% o depth: the image depth.
1362%
1363*/
1364
1365MagickExport MagickBooleanType SetImageDepth(Image *image,
1366 const size_t depth)
1367{
1368 return(SetImageChannelDepth(image,CompositeChannels,depth));
1369}
1370
1371MagickExport MagickBooleanType SetImageChannelDepth(Image *image,
1372 const ChannelType channel,const size_t depth)
1373{
1374 CacheView
1375 *image_view;
1376
1378 *exception;
1379
1380 MagickBooleanType
1381 status;
1382
1383 QuantumAny
1384 range;
1385
1386 ssize_t
1387 y;
1388
1389 assert(image != (Image *) NULL);
1390 if (IsEventLogging() != MagickFalse)
1391 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1392 assert(image->signature == MagickCoreSignature);
1393 if (depth >= MAGICKCORE_QUANTUM_DEPTH)
1394 {
1395 image->depth=depth;
1396 return(MagickTrue);
1397 }
1398 range=GetQuantumRange(depth);
1399 if (image->storage_class == PseudoClass)
1400 {
1401 ssize_t
1402 i;
1403
1404#if defined(MAGICKCORE_OPENMP_SUPPORT)
1405 #pragma omp parallel for schedule(static) shared(status) \
1406 magick_number_threads(image,image,image->rows,1)
1407#endif
1408 for (i=0; i < (ssize_t) image->colors; i++)
1409 {
1410 if ((channel & RedChannel) != 0)
1411 image->colormap[i].red=ScaleAnyToQuantum(ScaleQuantumToAny(
1412 ClampPixel((MagickRealType) image->colormap[i].red),range),range);
1413 if ((channel & GreenChannel) != 0)
1414 image->colormap[i].green=ScaleAnyToQuantum(ScaleQuantumToAny(
1415 ClampPixel((MagickRealType) image->colormap[i].green),range),range);
1416 if ((channel & BlueChannel) != 0)
1417 image->colormap[i].blue=ScaleAnyToQuantum(ScaleQuantumToAny(
1418 ClampPixel((MagickRealType) image->colormap[i].blue),range),range);
1419 if ((channel & OpacityChannel) != 0)
1420 image->colormap[i].opacity=ScaleAnyToQuantum(ScaleQuantumToAny(
1421 ClampPixel((MagickRealType) image->colormap[i].opacity),range),
1422 range);
1423 }
1424 }
1425 status=MagickTrue;
1426 exception=(&image->exception);
1427 image_view=AcquireAuthenticCacheView(image,exception);
1428#if !defined(MAGICKCORE_HDRI_SUPPORT)
1429DisableMSCWarning(4127)
1430 if (1UL*QuantumRange <= MaxMap)
1431RestoreMSCWarning
1432 {
1433 Quantum
1434 *depth_map;
1435
1436 ssize_t
1437 i;
1438
1439 /*
1440 Scale pixels to desired (optimized with depth map).
1441 */
1442 depth_map=(Quantum *) AcquireQuantumMemory(MaxMap+1,sizeof(*depth_map));
1443 if (depth_map == (Quantum *) NULL)
1444 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
1445 for (i=0; i <= (ssize_t) MaxMap; i++)
1446 depth_map[i]=ScaleAnyToQuantum(ScaleQuantumToAny((Quantum) i,range),
1447 range);
1448#if defined(MAGICKCORE_OPENMP_SUPPORT)
1449 #pragma omp parallel for schedule(static) shared(status) \
1450 magick_number_threads(image,image,image->rows,2)
1451#endif
1452 for (y=0; y < (ssize_t) image->rows; y++)
1453 {
1455 *magick_restrict q;
1456
1457 ssize_t
1458 x;
1459
1460 if (status == MagickFalse)
1461 continue;
1462 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
1463 exception);
1464 if (q == (PixelPacket *) NULL)
1465 {
1466 status=MagickFalse;
1467 continue;
1468 }
1469 for (x=0; x < (ssize_t) image->columns; x++)
1470 {
1471 if ((channel & RedChannel) != 0)
1472 SetPixelRed(q,depth_map[ScaleQuantumToMap(GetPixelRed(q))]);
1473 if ((channel & GreenChannel) != 0)
1474 SetPixelGreen(q,depth_map[ScaleQuantumToMap(GetPixelGreen(q))]);
1475 if ((channel & BlueChannel) != 0)
1476 SetPixelBlue(q,depth_map[ScaleQuantumToMap(GetPixelBlue(q))]);
1477 if (((channel & OpacityChannel) != 0) &&
1478 (image->matte != MagickFalse))
1479 SetPixelOpacity(q,depth_map[ScaleQuantumToMap(GetPixelOpacity(q))]);
1480 q++;
1481 }
1482 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1483 {
1484 status=MagickFalse;
1485 continue;
1486 }
1487 }
1488 image_view=DestroyCacheView(image_view);
1489 depth_map=(Quantum *) RelinquishMagickMemory(depth_map);
1490 if (status != MagickFalse)
1491 image->depth=depth;
1492 return(status);
1493 }
1494#endif
1495 /*
1496 Scale pixels to desired depth.
1497 */
1498#if defined(MAGICKCORE_OPENMP_SUPPORT)
1499 #pragma omp parallel for schedule(static) shared(status) \
1500 magick_number_threads(image,image,image->rows,2)
1501#endif
1502 for (y=0; y < (ssize_t) image->rows; y++)
1503 {
1505 *magick_restrict q;
1506
1507 ssize_t
1508 x;
1509
1510 if (status == MagickFalse)
1511 continue;
1512 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
1513 if (q == (PixelPacket *) NULL)
1514 {
1515 status=MagickFalse;
1516 continue;
1517 }
1518 for (x=0; x < (ssize_t) image->columns; x++)
1519 {
1520 if ((channel & RedChannel) != 0)
1521 SetPixelRed(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
1522 (MagickRealType) GetPixelRed(q)),range),range));
1523 if ((channel & GreenChannel) != 0)
1524 SetPixelGreen(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
1525 (MagickRealType) GetPixelGreen(q)),range),range));
1526 if ((channel & BlueChannel) != 0)
1527 SetPixelBlue(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
1528 (MagickRealType) GetPixelBlue(q)),range),range));
1529 if (((channel & OpacityChannel) != 0) && (image->matte != MagickFalse))
1530 SetPixelOpacity(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
1531 (MagickRealType) GetPixelOpacity(q)),range),range));
1532 q++;
1533 }
1534 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1535 {
1536 status=MagickFalse;
1537 continue;
1538 }
1539 }
1540 image_view=DestroyCacheView(image_view);
1541 if (status != MagickFalse)
1542 image->depth=depth;
1543 return(status);
1544}
1545
1546/*
1547%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1548% %
1549% %
1550% %
1551% S e t I m a g e T y p e %
1552% %
1553% %
1554% %
1555%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1556%
1557% SetImageType() sets the type of image. Choose from these types:
1558%
1559% BilevelType, GrayscaleType, GrayscaleMatteType, PaletteType,
1560% PaletteMatteType, TrueColorType, TrueColorMatteType,
1561% ColorSeparationType, ColorSeparationMatteType, OptimizeType
1562%
1563% The format of the SetImageType method is:
1564%
1565% MagickBooleanType SetImageType(Image *image,const ImageType type)
1566%
1567% A description of each parameter follows:
1568%
1569% o image: the image.
1570%
1571% o type: Image type.
1572%
1573*/
1574MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type)
1575{
1576 const char
1577 *artifact;
1578
1579 ImageInfo
1580 *image_info;
1581
1582 MagickBooleanType
1583 status;
1584
1586 *quantize_info;
1587
1588 assert(image != (Image *) NULL);
1589 if (IsEventLogging() != MagickFalse)
1590 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1591 assert(image->signature == MagickCoreSignature);
1592 status=MagickTrue;
1593 image_info=AcquireImageInfo();
1594 image_info->dither=image->dither;
1595 artifact=GetImageArtifact(image,"dither");
1596 if (artifact != (const char *) NULL)
1597 (void) SetImageOption(image_info,"dither",artifact);
1598 switch (type)
1599 {
1600 case BilevelType:
1601 {
1602 if (IsGrayColorspace(image->colorspace) == MagickFalse)
1603 status=TransformImageColorspace(image,GRAYColorspace);
1604 (void) NormalizeImage(image);
1605 (void) BilevelImage(image,(double) QuantumRange/2.0);
1606 quantize_info=AcquireQuantizeInfo(image_info);
1607 quantize_info->number_colors=2;
1608 quantize_info->colorspace=GRAYColorspace;
1609 status=QuantizeImage(quantize_info,image);
1610 quantize_info=DestroyQuantizeInfo(quantize_info);
1611 image->matte=MagickFalse;
1612 break;
1613 }
1614 case GrayscaleType:
1615 {
1616 if (IsGrayColorspace(image->colorspace) == MagickFalse)
1617 status=TransformImageColorspace(image,GRAYColorspace);
1618 image->matte=MagickFalse;
1619 break;
1620 }
1621 case GrayscaleMatteType:
1622 {
1623 if (IsGrayColorspace(image->colorspace) == MagickFalse)
1624 status=TransformImageColorspace(image,GRAYColorspace);
1625 if (image->matte == MagickFalse)
1626 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1627 break;
1628 }
1629 case PaletteType:
1630 {
1631 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1632 status=TransformImageColorspace(image,sRGBColorspace);
1633 if ((image->storage_class == DirectClass) || (image->colors > 256))
1634 {
1635 quantize_info=AcquireQuantizeInfo(image_info);
1636 quantize_info->number_colors=256;
1637 status=QuantizeImage(quantize_info,image);
1638 quantize_info=DestroyQuantizeInfo(quantize_info);
1639 }
1640 image->matte=MagickFalse;
1641 break;
1642 }
1643 case PaletteBilevelMatteType:
1644 {
1645 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1646 status=TransformImageColorspace(image,sRGBColorspace);
1647 if (image->matte == MagickFalse)
1648 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1649 (void) BilevelImageChannel(image,AlphaChannel,(double) QuantumRange/2.0);
1650 quantize_info=AcquireQuantizeInfo(image_info);
1651 status=QuantizeImage(quantize_info,image);
1652 quantize_info=DestroyQuantizeInfo(quantize_info);
1653 break;
1654 }
1655 case PaletteMatteType:
1656 {
1657 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1658 status=TransformImageColorspace(image,sRGBColorspace);
1659 if (image->matte == MagickFalse)
1660 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1661 quantize_info=AcquireQuantizeInfo(image_info);
1662 quantize_info->colorspace=TransparentColorspace;
1663 status=QuantizeImage(quantize_info,image);
1664 quantize_info=DestroyQuantizeInfo(quantize_info);
1665 break;
1666 }
1667 case TrueColorType:
1668 {
1669 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1670 status=TransformImageColorspace(image,sRGBColorspace);
1671 if (image->storage_class != DirectClass)
1672 status=SetImageStorageClass(image,DirectClass);
1673 image->matte=MagickFalse;
1674 break;
1675 }
1676 case TrueColorMatteType:
1677 {
1678 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
1679 status=TransformImageColorspace(image,sRGBColorspace);
1680 if (image->storage_class != DirectClass)
1681 status=SetImageStorageClass(image,DirectClass);
1682 if (image->matte == MagickFalse)
1683 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1684 break;
1685 }
1686 case ColorSeparationType:
1687 {
1688 if (image->colorspace != CMYKColorspace)
1689 status=TransformImageColorspace(image,CMYKColorspace);
1690 if (image->storage_class != DirectClass)
1691 status=SetImageStorageClass(image,DirectClass);
1692 image->matte=MagickFalse;
1693 break;
1694 }
1695 case ColorSeparationMatteType:
1696 {
1697 if (image->colorspace != CMYKColorspace)
1698 status=TransformImageColorspace(image,CMYKColorspace);
1699 if (image->storage_class != DirectClass)
1700 status=SetImageStorageClass(image,DirectClass);
1701 if (image->matte == MagickFalse)
1702 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1703 break;
1704 }
1705 case OptimizeType:
1706 case UndefinedType:
1707 break;
1708 }
1709 image_info=DestroyImageInfo(image_info);
1710 if (status == MagickFalse)
1711 return(MagickFalse);
1712 image->type=type;
1713 return(MagickTrue);
1714}
Definition: image.h:134