2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6 % TTTTT RRRR AAA N N SSSSS FFFFF OOO RRRR M M %
7 % T R R A A NN N SS F O O R R MM MM %
8 % T RRRR AAAAA N N N SSS FFF O O RRRR M M M %
9 % T R R A A N NN SS F O O R R M M %
10 % T R R A A N N SSSSS F OOO R R M M %
13 % MagickCore Image Transform Methods %
20 % Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
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. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "magick/studio.h"
43 #include "magick/attribute.h"
44 #include "magick/cache.h"
45 #include "magick/cache-view.h"
46 #include "magick/color.h"
47 #include "magick/color-private.h"
48 #include "magick/colorspace-private.h"
49 #include "magick/composite.h"
50 #include "magick/draw.h"
51 #include "magick/effect.h"
52 #include "magick/exception.h"
53 #include "magick/exception-private.h"
54 #include "magick/geometry.h"
55 #include "magick/image.h"
56 #include "magick/memory_.h"
57 #include "magick/layer.h"
58 #include "magick/list.h"
59 #include "magick/monitor.h"
60 #include "magick/monitor-private.h"
61 #include "magick/pixel-private.h"
62 #include "magick/resource_.h"
63 #include "magick/resize.h"
64 #include "magick/statistic.h"
65 #include "magick/string_.h"
66 #include "magick/thread-private.h"
67 #include "magick/transform.h"
70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
80 % ChopImage() removes a region of an image and collapses the image to occupy
81 % the removed portion.
83 % The format of the ChopImage method is:
85 % Image *ChopImage(const Image *image,const RectangleInfo *chop_info)
86 % ExceptionInfo *exception)
88 % A description of each parameter follows:
92 % o chop_info: Define the region of the image to chop.
94 % o exception: return any errors or warnings in this structure.
97 MagickExport Image *ChopImage(const Image *image,const RectangleInfo *chop_info,
98 ExceptionInfo *exception)
100 #define ChopImageTag "Chop/Image"
124 assert(image != (const Image *) NULL);
125 assert(image->signature == MagickSignature);
126 if (image->debug != MagickFalse)
127 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
128 assert(exception != (ExceptionInfo *) NULL);
129 assert(exception->signature == MagickSignature);
130 assert(chop_info != (RectangleInfo *) NULL);
131 if (((chop_info->x+(ssize_t) chop_info->width) < 0) ||
132 ((chop_info->y+(ssize_t) chop_info->height) < 0) ||
133 (chop_info->x > (ssize_t) image->columns) ||
134 (chop_info->y > (ssize_t) image->rows))
135 ThrowImageException(OptionWarning,"GeometryDoesNotContainImage");
137 if ((extent.x+(ssize_t) extent.width) > (ssize_t) image->columns)
138 extent.width=(size_t) ((ssize_t) image->columns-extent.x);
139 if ((extent.y+(ssize_t) extent.height) > (ssize_t) image->rows)
140 extent.height=(size_t) ((ssize_t) image->rows-extent.y);
143 extent.width-=(size_t) (-extent.x);
148 extent.height-=(size_t) (-extent.y);
151 chop_image=CloneImage(image,image->columns-extent.width,image->rows-
152 extent.height,MagickTrue,exception);
153 if (chop_image == (Image *) NULL)
154 return((Image *) NULL);
160 image_view=AcquireCacheView(image);
161 chop_view=AcquireCacheView(chop_image);
162 #if defined(MAGICKCORE_OPENMP_SUPPORT)
163 #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
165 for (y=0; y < (ssize_t) extent.y; y++)
167 register const PixelPacket
171 *restrict chop_indexes,
180 if (status == MagickFalse)
182 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
183 q=QueueCacheViewAuthenticPixels(chop_view,0,y,chop_image->columns,1,
185 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
190 indexes=GetCacheViewAuthenticIndexQueue(image_view);
191 chop_indexes=GetCacheViewAuthenticIndexQueue(chop_view);
192 for (x=0; x < (ssize_t) image->columns; x++)
194 if ((x < extent.x) || (x >= (ssize_t) (extent.x+extent.width)))
197 if (indexes != (IndexPacket *) NULL)
199 if (chop_indexes != (IndexPacket *) NULL)
200 *chop_indexes++=indexes[x];
206 if (SyncCacheViewAuthenticPixels(chop_view,exception) == MagickFalse)
208 if (image->progress_monitor != (MagickProgressMonitor) NULL)
213 #if defined(MAGICKCORE_OPENMP_SUPPORT)
214 #pragma omp critical (MagickCore_ChopImage)
216 proceed=SetImageProgress(image,ChopImageTag,progress++,image->rows);
217 if (proceed == MagickFalse)
224 #if defined(MAGICKCORE_OPENMP_SUPPORT)
225 #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
227 for (y=0; y < (ssize_t) (image->rows-(extent.y+extent.height)); y++)
229 register const PixelPacket
233 *restrict chop_indexes,
242 if (status == MagickFalse)
244 p=GetCacheViewVirtualPixels(image_view,0,extent.y+extent.height+y,
245 image->columns,1,exception);
246 q=QueueCacheViewAuthenticPixels(chop_view,0,extent.y+y,chop_image->columns,
248 if ((p == (PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
253 indexes=GetCacheViewAuthenticIndexQueue(image_view);
254 chop_indexes=GetCacheViewAuthenticIndexQueue(chop_view);
255 for (x=0; x < (ssize_t) image->columns; x++)
257 if ((x < extent.x) || (x >= (ssize_t) (extent.x+extent.width)))
260 if (indexes != (IndexPacket *) NULL)
262 if (chop_indexes != (IndexPacket *) NULL)
263 *chop_indexes++=indexes[x];
269 if (SyncCacheViewAuthenticPixels(chop_view,exception) == MagickFalse)
271 if (image->progress_monitor != (MagickProgressMonitor) NULL)
276 #if defined(MAGICKCORE_OPENMP_SUPPORT)
277 #pragma omp critical (MagickCore_ChopImage)
279 proceed=SetImageProgress(image,ChopImageTag,progress++,image->rows);
280 if (proceed == MagickFalse)
284 chop_view=DestroyCacheView(chop_view);
285 image_view=DestroyCacheView(image_view);
286 chop_image->type=image->type;
291 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
295 + C o n s o l i d a t e C M Y K I m a g e %
299 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
301 % ConsolidateCMYKImage() consolidates separate C, M, Y, and K planes into a
304 % The format of the ConsolidateCMYKImage method is:
306 % Image *ConsolidateCMYKImage(const Image *image,ExceptionInfo *exception)
308 % A description of each parameter follows:
310 % o image: the image sequence.
312 % o exception: return any errors or warnings in this structure.
315 MagickExport Image *ConsolidateCMYKImages(const Image *images,
316 ExceptionInfo *exception)
333 Consolidate separate C, M, Y, and K planes into a single image.
335 assert(images != (Image *) NULL);
336 assert(images->signature == MagickSignature);
337 if (images->debug != MagickFalse)
338 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
339 assert(exception != (ExceptionInfo *) NULL);
340 assert(exception->signature == MagickSignature);
341 cmyk_images=NewImageList();
342 for (i=0; i < (ssize_t) GetImageListLength(images); i+=4)
344 cmyk_image=CloneImage(images,images->columns,images->rows,MagickTrue,
346 if (cmyk_image == (Image *) NULL)
348 if (SetImageStorageClass(cmyk_image,DirectClass) == MagickFalse)
350 (void) SetImageColorspace(cmyk_image,CMYKColorspace);
351 image_view=AcquireCacheView(images);
352 cmyk_view=AcquireCacheView(cmyk_image);
353 for (y=0; y < (ssize_t) images->rows; y++)
355 register const PixelPacket
364 p=GetCacheViewVirtualPixels(image_view,0,y,images->columns,1,exception);
365 q=QueueCacheViewAuthenticPixels(cmyk_view,0,y,cmyk_image->columns,1,
367 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
369 for (x=0; x < (ssize_t) images->columns; x++)
371 q->red=(Quantum) (QuantumRange-PixelIntensityToQuantum(p));
375 if (SyncCacheViewAuthenticPixels(cmyk_view,exception) == MagickFalse)
378 cmyk_view=DestroyCacheView(cmyk_view);
379 image_view=DestroyCacheView(image_view);
380 images=GetNextImageInList(images);
381 if (images == (Image *) NULL)
383 image_view=AcquireCacheView(images);
384 cmyk_view=AcquireCacheView(cmyk_image);
385 for (y=0; y < (ssize_t) images->rows; y++)
387 register const PixelPacket
396 p=GetCacheViewVirtualPixels(image_view,0,y,images->columns,1,exception);
397 q=GetCacheViewAuthenticPixels(cmyk_view,0,y,cmyk_image->columns,1,
399 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
401 for (x=0; x < (ssize_t) images->columns; x++)
403 q->green=(Quantum) (QuantumRange-PixelIntensityToQuantum(p));
407 if (SyncCacheViewAuthenticPixels(cmyk_view,exception) == MagickFalse)
410 cmyk_view=DestroyCacheView(cmyk_view);
411 image_view=DestroyCacheView(image_view);
412 images=GetNextImageInList(images);
413 if (images == (Image *) NULL)
415 image_view=AcquireCacheView(images);
416 cmyk_view=AcquireCacheView(cmyk_image);
417 for (y=0; y < (ssize_t) images->rows; y++)
419 register const PixelPacket
428 p=GetCacheViewVirtualPixels(image_view,0,y,images->columns,1,exception);
429 q=GetCacheViewAuthenticPixels(cmyk_view,0,y,cmyk_image->columns,1,
431 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
433 for (x=0; x < (ssize_t) images->columns; x++)
435 q->blue=(Quantum) (QuantumRange-PixelIntensityToQuantum(p));
439 if (SyncCacheViewAuthenticPixels(cmyk_view,exception) == MagickFalse)
442 cmyk_view=DestroyCacheView(cmyk_view);
443 image_view=DestroyCacheView(image_view);
444 images=GetNextImageInList(images);
445 if (images == (Image *) NULL)
447 image_view=AcquireCacheView(images);
448 cmyk_view=AcquireCacheView(cmyk_image);
449 for (y=0; y < (ssize_t) images->rows; y++)
451 register const PixelPacket
463 p=GetCacheViewVirtualPixels(image_view,0,y,images->columns,1,exception);
464 q=GetCacheViewAuthenticPixels(cmyk_view,0,y,cmyk_image->columns,1,
466 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
468 indexes=GetCacheViewAuthenticIndexQueue(cmyk_view);
469 for (x=0; x < (ssize_t) images->columns; x++)
471 indexes[x]=(IndexPacket) (QuantumRange-PixelIntensityToQuantum(p));
474 if (SyncCacheViewAuthenticPixels(cmyk_view,exception) == MagickFalse)
477 cmyk_view=DestroyCacheView(cmyk_view);
478 image_view=DestroyCacheView(image_view);
479 AppendImageToList(&cmyk_images,cmyk_image);
480 images=GetNextImageInList(images);
481 if (images == (Image *) NULL)
488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
492 % C r o p I m a g e %
496 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
498 % CropImage() extracts a region of the image starting at the offset defined
501 % The format of the CropImage method is:
503 % Image *CropImage(const Image *image,const RectangleInfo *geometry,
504 % ExceptionInfo *exception)
506 % A description of each parameter follows:
508 % o image: the image.
510 % o geometry: Define the region of the image to crop with members
511 % x, y, width, and height.
513 % o exception: return any errors or warnings in this structure.
516 MagickExport Image *CropImage(const Image *image,const RectangleInfo *geometry,
517 ExceptionInfo *exception)
519 #define CropImageTag "Crop/Image"
544 assert(image != (const Image *) NULL);
545 assert(image->signature == MagickSignature);
546 if (image->debug != MagickFalse)
547 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
548 assert(geometry != (const RectangleInfo *) NULL);
549 assert(exception != (ExceptionInfo *) NULL);
550 assert(exception->signature == MagickSignature);
551 bounding_box=image->page;
552 if ((bounding_box.width == 0) || (bounding_box.height == 0))
554 bounding_box.width=image->columns;
555 bounding_box.height=image->rows;
559 page.width=bounding_box.width;
560 if (page.height == 0)
561 page.height=bounding_box.height;
562 if (((bounding_box.x-page.x) >= (ssize_t) page.width) ||
563 ((bounding_box.y-page.y) >= (ssize_t) page.height) ||
564 ((page.x-bounding_box.x) > (ssize_t) image->columns) ||
565 ((page.y-bounding_box.y) > (ssize_t) image->rows))
568 Crop is not within virtual canvas, return 1 pixel transparent image.
570 (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
571 "GeometryDoesNotContainImage","`%s'",image->filename);
572 crop_image=CloneImage(image,1,1,MagickTrue,exception);
573 if (crop_image == (Image *) NULL)
574 return((Image *) NULL);
575 crop_image->background_color.opacity=(Quantum) TransparentOpacity;
576 (void) SetImageBackgroundColor(crop_image);
577 crop_image->page=bounding_box;
578 crop_image->page.x=(-1);
579 crop_image->page.y=(-1);
580 if (crop_image->dispose == BackgroundDispose)
581 crop_image->dispose=NoneDispose;
584 if ((page.x < 0) && (bounding_box.x >= 0))
586 page.width+=page.x-bounding_box.x;
591 page.width-=bounding_box.x-page.x;
592 page.x-=bounding_box.x;
596 if ((page.y < 0) && (bounding_box.y >= 0))
598 page.height+=page.y-bounding_box.y;
603 page.height-=bounding_box.y-page.y;
604 page.y-=bounding_box.y;
608 if ((size_t) (page.x+page.width) > image->columns)
609 page.width=image->columns-page.x;
610 if ((geometry->width != 0) && (page.width > geometry->width))
611 page.width=geometry->width;
612 if ((size_t) (page.y+page.height) > image->rows)
613 page.height=image->rows-page.y;
614 if ((geometry->height != 0) && (page.height > geometry->height))
615 page.height=geometry->height;
616 bounding_box.x+=page.x;
617 bounding_box.y+=page.y;
618 if ((page.width == 0) || (page.height == 0))
620 (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
621 "GeometryDoesNotContainImage","`%s'",image->filename);
622 return((Image *) NULL);
625 Initialize crop image attributes.
627 crop_image=CloneImage(image,page.width,page.height,MagickTrue,exception);
628 if (crop_image == (Image *) NULL)
629 return((Image *) NULL);
630 crop_image->page.width=image->page.width;
631 crop_image->page.height=image->page.height;
632 if (((ssize_t) (bounding_box.x+bounding_box.width) > (ssize_t) image->page.width) ||
633 ((ssize_t) (bounding_box.y+bounding_box.height) > (ssize_t) image->page.height))
635 crop_image->page.width=bounding_box.width;
636 crop_image->page.height=bounding_box.height;
638 crop_image->page.x=bounding_box.x;
639 crop_image->page.y=bounding_box.y;
645 image_view=AcquireCacheView(image);
646 crop_view=AcquireCacheView(crop_image);
647 #if defined(MAGICKCORE_OPENMP_SUPPORT)
648 #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
650 for (y=0; y < (ssize_t) crop_image->rows; y++)
652 register const IndexPacket
655 register const PixelPacket
659 *restrict crop_indexes;
664 if (status == MagickFalse)
666 p=GetCacheViewVirtualPixels(image_view,page.x,page.y+y,crop_image->columns,
668 q=QueueCacheViewAuthenticPixels(crop_view,0,y,crop_image->columns,1,
670 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
675 indexes=GetCacheViewVirtualIndexQueue(image_view);
676 crop_indexes=GetCacheViewAuthenticIndexQueue(crop_view);
677 (void) CopyMagickMemory(q,p,(size_t) crop_image->columns*sizeof(*p));
678 if ((indexes != (IndexPacket *) NULL) &&
679 (crop_indexes != (IndexPacket *) NULL))
680 (void) CopyMagickMemory(crop_indexes,indexes,(size_t) crop_image->columns*
681 sizeof(*crop_indexes));
682 if (SyncCacheViewAuthenticPixels(crop_view,exception) == MagickFalse)
684 if (image->progress_monitor != (MagickProgressMonitor) NULL)
689 #if defined(MAGICKCORE_OPENMP_SUPPORT)
690 #pragma omp critical (MagickCore_CropImage)
692 proceed=SetImageProgress(image,CropImageTag,progress++,image->rows);
693 if (proceed == MagickFalse)
697 crop_view=DestroyCacheView(crop_view);
698 image_view=DestroyCacheView(image_view);
699 crop_image->type=image->type;
700 if (status == MagickFalse)
701 crop_image=DestroyImage(crop_image);
706 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
710 % E x c e r p t I m a g e %
714 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
716 % ExcerptImage() returns a excerpt of the image as defined by the geometry.
718 % The format of the ExcerptImage method is:
720 % Image *ExcerptImage(const Image *image,const RectangleInfo *geometry,
721 % ExceptionInfo *exception)
723 % A description of each parameter follows:
725 % o image: the image.
727 % o geometry: Define the region of the image to extend with members
728 % x, y, width, and height.
730 % o exception: return any errors or warnings in this structure.
733 MagickExport Image *ExcerptImage(const Image *image,
734 const RectangleInfo *geometry,ExceptionInfo *exception)
736 #define ExcerptImageTag "Excerpt/Image"
755 Allocate excerpt image.
757 assert(image != (const Image *) NULL);
758 assert(image->signature == MagickSignature);
759 if (image->debug != MagickFalse)
760 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
761 assert(geometry != (const RectangleInfo *) NULL);
762 assert(exception != (ExceptionInfo *) NULL);
763 assert(exception->signature == MagickSignature);
764 excerpt_image=CloneImage(image,geometry->width,geometry->height,MagickTrue,
766 if (excerpt_image == (Image *) NULL)
767 return((Image *) NULL);
773 image_view=AcquireCacheView(image);
774 excerpt_view=AcquireCacheView(excerpt_image);
775 #if defined(MAGICKCORE_OPENMP_SUPPORT)
776 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
778 for (y=0; y < (ssize_t) excerpt_image->rows; y++)
780 register const PixelPacket
784 *restrict excerpt_indexes,
790 if (status == MagickFalse)
792 p=GetCacheViewVirtualPixels(image_view,geometry->x,geometry->y+y,
793 geometry->width,1,exception);
794 q=GetCacheViewAuthenticPixels(excerpt_view,0,y,excerpt_image->columns,1,
796 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
801 (void) CopyMagickMemory(q,p,(size_t) excerpt_image->columns*sizeof(*q));
802 indexes=GetCacheViewAuthenticIndexQueue(image_view);
803 if (indexes != (IndexPacket *) NULL)
805 excerpt_indexes=GetCacheViewAuthenticIndexQueue(excerpt_view);
806 if (excerpt_indexes != (IndexPacket *) NULL)
807 (void) CopyMagickMemory(excerpt_indexes,indexes,(size_t)
808 excerpt_image->columns*sizeof(*excerpt_indexes));
810 if (SyncCacheViewAuthenticPixels(excerpt_view,exception) == MagickFalse)
812 if (image->progress_monitor != (MagickProgressMonitor) NULL)
817 #if defined(MAGICKCORE_OPENMP_SUPPORT)
818 #pragma omp critical (MagickCore_ExcerptImage)
820 proceed=SetImageProgress(image,ExcerptImageTag,progress++,image->rows);
821 if (proceed == MagickFalse)
825 excerpt_view=DestroyCacheView(excerpt_view);
826 image_view=DestroyCacheView(image_view);
827 excerpt_image->type=image->type;
828 if (status == MagickFalse)
829 excerpt_image=DestroyImage(excerpt_image);
830 return(excerpt_image);
834 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838 % E x t e n t I m a g e %
842 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
844 % ExtentImage() extends the image as defined by the geometry, gravity, and
845 % image background color. Set the (x,y) offset of the geometry to move the
846 % original image relative to the extended image.
848 % The format of the ExtentImage method is:
850 % Image *ExtentImage(const Image *image,const RectangleInfo *geometry,
851 % ExceptionInfo *exception)
853 % A description of each parameter follows:
855 % o image: the image.
857 % o geometry: Define the region of the image to extend with members
858 % x, y, width, and height.
860 % o exception: return any errors or warnings in this structure.
863 MagickExport Image *ExtentImage(const Image *image,
864 const RectangleInfo *geometry,ExceptionInfo *exception)
870 Allocate extent image.
872 assert(image != (const Image *) NULL);
873 assert(image->signature == MagickSignature);
874 if (image->debug != MagickFalse)
875 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
876 assert(geometry != (const RectangleInfo *) NULL);
877 assert(exception != (ExceptionInfo *) NULL);
878 assert(exception->signature == MagickSignature);
879 extent_image=CloneImage(image,geometry->width,geometry->height,MagickTrue,
881 if (extent_image == (Image *) NULL)
882 return((Image *) NULL);
883 if (SetImageStorageClass(extent_image,DirectClass) == MagickFalse)
885 InheritException(exception,&extent_image->exception);
886 extent_image=DestroyImage(extent_image);
887 return((Image *) NULL);
889 if (extent_image->background_color.opacity != OpaqueOpacity)
890 extent_image->matte=MagickTrue;
891 (void) SetImageBackgroundColor(extent_image);
892 (void) CompositeImage(extent_image,image->compose,image,-geometry->x,
894 return(extent_image);
898 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
902 % F l i p I m a g e %
906 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
908 % FlipImage() creates a vertical mirror image by reflecting the pixels
909 % around the central x-axis.
911 % The format of the FlipImage method is:
913 % Image *FlipImage(const Image *image,ExceptionInfo *exception)
915 % A description of each parameter follows:
917 % o image: the image.
919 % o exception: return any errors or warnings in this structure.
922 MagickExport Image *FlipImage(const Image *image,ExceptionInfo *exception)
924 #define FlipImageTag "Flip/Image"
942 assert(image != (const Image *) NULL);
943 assert(image->signature == MagickSignature);
944 if (image->debug != MagickFalse)
945 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
946 assert(exception != (ExceptionInfo *) NULL);
947 assert(exception->signature == MagickSignature);
948 flip_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
949 if (flip_image == (Image *) NULL)
950 return((Image *) NULL);
956 image_view=AcquireCacheView(image);
957 flip_view=AcquireCacheView(flip_image);
958 #if defined(MAGICKCORE_OPENMP_SUPPORT)
959 #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
961 for (y=0; y < (ssize_t) flip_image->rows; y++)
963 register const IndexPacket
966 register const PixelPacket
970 *restrict flip_indexes;
975 if (status == MagickFalse)
977 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
978 q=QueueCacheViewAuthenticPixels(flip_view,0,(ssize_t) (flip_image->rows-y-
979 1),flip_image->columns,1,exception);
980 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
985 (void) CopyMagickMemory(q,p,(size_t) image->columns*sizeof(*q));
986 indexes=GetCacheViewVirtualIndexQueue(image_view);
987 if (indexes != (const IndexPacket *) NULL)
989 flip_indexes=GetCacheViewAuthenticIndexQueue(flip_view);
990 if (flip_indexes != (IndexPacket *) NULL)
991 (void) CopyMagickMemory(flip_indexes,indexes,(size_t) image->columns*
992 sizeof(*flip_indexes));
994 if (SyncCacheViewAuthenticPixels(flip_view,exception) == MagickFalse)
996 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1001 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1002 #pragma omp critical (MagickCore_FlipImage)
1004 proceed=SetImageProgress(image,FlipImageTag,progress++,image->rows);
1005 if (proceed == MagickFalse)
1009 flip_view=DestroyCacheView(flip_view);
1010 image_view=DestroyCacheView(image_view);
1011 flip_image->type=image->type;
1012 if (status == MagickFalse)
1013 flip_image=DestroyImage(flip_image);
1018 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1022 % F l o p I m a g e %
1026 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1028 % FlopImage() creates a horizontal mirror image by reflecting the pixels
1029 % around the central y-axis.
1031 % The format of the FlopImage method is:
1033 % Image *FlopImage(const Image *image,ExceptionInfo *exception)
1035 % A description of each parameter follows:
1037 % o image: the image.
1039 % o exception: return any errors or warnings in this structure.
1042 MagickExport Image *FlopImage(const Image *image,ExceptionInfo *exception)
1044 #define FlopImageTag "Flop/Image"
1062 assert(image != (const Image *) NULL);
1063 assert(image->signature == MagickSignature);
1064 if (image->debug != MagickFalse)
1065 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1066 assert(exception != (ExceptionInfo *) NULL);
1067 assert(exception->signature == MagickSignature);
1068 flop_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
1069 if (flop_image == (Image *) NULL)
1070 return((Image *) NULL);
1076 image_view=AcquireCacheView(image);
1077 flop_view=AcquireCacheView(flop_image);
1078 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1079 #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
1081 for (y=0; y < (ssize_t) flop_image->rows; y++)
1083 register const IndexPacket
1086 register const PixelPacket
1089 register IndexPacket
1090 *restrict flop_indexes;
1095 register PixelPacket
1098 if (status == MagickFalse)
1100 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1101 q=QueueCacheViewAuthenticPixels(flop_view,0,y,flop_image->columns,1,
1103 if ((p == (PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
1108 q+=flop_image->columns;
1109 indexes=GetCacheViewVirtualIndexQueue(image_view);
1110 flop_indexes=GetCacheViewAuthenticIndexQueue(flop_view);
1111 for (x=0; x < (ssize_t) flop_image->columns; x++)
1114 if ((indexes != (const IndexPacket *) NULL) &&
1115 (flop_indexes != (IndexPacket *) NULL))
1116 flop_indexes[flop_image->columns-x-1]=indexes[x];
1118 if (SyncCacheViewAuthenticPixels(flop_view,exception) == MagickFalse)
1120 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1125 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1126 #pragma omp critical (MagickCore_FlopImage)
1128 proceed=SetImageProgress(image,FlopImageTag,progress++,image->rows);
1129 if (proceed == MagickFalse)
1133 flop_view=DestroyCacheView(flop_view);
1134 image_view=DestroyCacheView(image_view);
1135 flop_image->type=image->type;
1136 if (status == MagickFalse)
1137 flop_image=DestroyImage(flop_image);
1142 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1146 % R o l l I m a g e %
1150 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1152 % RollImage() offsets an image as defined by x_offset and y_offset.
1154 % The format of the RollImage method is:
1156 % Image *RollImage(const Image *image,const ssize_t x_offset,
1157 % const ssize_t y_offset,ExceptionInfo *exception)
1159 % A description of each parameter follows:
1161 % o image: the image.
1163 % o x_offset: the number of columns to roll in the horizontal direction.
1165 % o y_offset: the number of rows to roll in the vertical direction.
1167 % o exception: return any errors or warnings in this structure.
1171 static inline MagickBooleanType CopyImageRegion(Image *destination,
1172 const Image *source,const size_t columns,const size_t rows,
1173 const ssize_t sx,const ssize_t sy,const ssize_t dx,const ssize_t dy,
1174 ExceptionInfo *exception)
1187 source_view=AcquireCacheView(source);
1188 destination_view=AcquireCacheView(destination);
1189 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1190 #pragma omp parallel for schedule(dynamic,4) shared(status)
1192 for (y=0; y < (ssize_t) rows; y++)
1197 register const IndexPacket
1200 register const PixelPacket
1203 register IndexPacket
1204 *restrict destination_indexes;
1206 register PixelPacket
1212 if (status == MagickFalse)
1214 p=GetCacheViewVirtualPixels(source_view,sx,sy+y,columns,1,exception);
1215 q=GetCacheViewAuthenticPixels(destination_view,dx,dy+y,columns,1,exception);
1216 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
1221 indexes=GetCacheViewVirtualIndexQueue(source_view);
1222 (void) CopyMagickMemory(q,p,(size_t) columns*sizeof(*p));
1223 if (indexes != (IndexPacket *) NULL)
1225 destination_indexes=GetCacheViewAuthenticIndexQueue(destination_view);
1226 if (destination_indexes != (IndexPacket *) NULL)
1227 (void) CopyMagickMemory(destination_indexes,indexes,(size_t)
1228 columns*sizeof(*indexes));
1230 sync=SyncCacheViewAuthenticPixels(destination_view,exception);
1231 if (sync == MagickFalse)
1234 destination_view=DestroyCacheView(destination_view);
1235 source_view=DestroyCacheView(source_view);
1239 MagickExport Image *RollImage(const Image *image,const ssize_t x_offset,
1240 const ssize_t y_offset,ExceptionInfo *exception)
1242 #define RollImageTag "Roll/Image"
1254 Initialize roll image attributes.
1256 assert(image != (const Image *) NULL);
1257 assert(image->signature == MagickSignature);
1258 if (image->debug != MagickFalse)
1259 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1260 assert(exception != (ExceptionInfo *) NULL);
1261 assert(exception->signature == MagickSignature);
1262 roll_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
1263 if (roll_image == (Image *) NULL)
1264 return((Image *) NULL);
1267 while (offset.x < 0)
1268 offset.x+=(ssize_t) image->columns;
1269 while (offset.x >= (ssize_t) image->columns)
1270 offset.x-=(ssize_t) image->columns;
1271 while (offset.y < 0)
1272 offset.y+=(ssize_t) image->rows;
1273 while (offset.y >= (ssize_t) image->rows)
1274 offset.y-=(ssize_t) image->rows;
1278 status=CopyImageRegion(roll_image,image,(size_t) offset.x,
1279 (size_t) offset.y,(ssize_t) image->columns-offset.x,(ssize_t) image->rows-
1280 offset.y,0,0,exception);
1281 (void) SetImageProgress(image,RollImageTag,0,3);
1282 status|=CopyImageRegion(roll_image,image,image->columns-offset.x,
1283 (size_t) offset.y,0,(ssize_t) image->rows-offset.y,offset.x,0,
1285 (void) SetImageProgress(image,RollImageTag,1,3);
1286 status|=CopyImageRegion(roll_image,image,(size_t) offset.x,image->rows-
1287 offset.y,(ssize_t) image->columns-offset.x,0,0,offset.y,exception);
1288 (void) SetImageProgress(image,RollImageTag,2,3);
1289 status|=CopyImageRegion(roll_image,image,image->columns-offset.x,image->rows-
1290 offset.y,0,0,offset.x,offset.y,exception);
1291 (void) SetImageProgress(image,RollImageTag,3,3);
1292 roll_image->type=image->type;
1293 if (status == MagickFalse)
1294 roll_image=DestroyImage(roll_image);
1299 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1303 % S h a v e I m a g e %
1307 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1309 % ShaveImage() shaves pixels from the image edges. It allocates the memory
1310 % necessary for the new Image structure and returns a pointer to the new
1313 % The format of the ShaveImage method is:
1315 % Image *ShaveImage(const Image *image,const RectangleInfo *shave_info,
1316 % ExceptionInfo *exception)
1318 % A description of each parameter follows:
1320 % o shave_image: Method ShaveImage returns a pointer to the shaved
1321 % image. A null image is returned if there is a memory shortage or
1322 % if the image width or height is zero.
1324 % o image: the image.
1326 % o shave_info: Specifies a pointer to a RectangleInfo which defines the
1327 % region of the image to crop.
1329 % o exception: return any errors or warnings in this structure.
1332 MagickExport Image *ShaveImage(const Image *image,
1333 const RectangleInfo *shave_info,ExceptionInfo *exception)
1341 assert(image != (const Image *) NULL);
1342 assert(image->signature == MagickSignature);
1343 if (image->debug != MagickFalse)
1344 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1345 if (((2*shave_info->width) >= image->columns) ||
1346 ((2*shave_info->height) >= image->rows))
1347 ThrowImageException(OptionWarning,"GeometryDoesNotContainImage");
1348 SetGeometry(image,&geometry);
1349 geometry.width-=2*shave_info->width;
1350 geometry.height-=2*shave_info->height;
1351 geometry.x=(ssize_t) shave_info->width+image->page.x;
1352 geometry.y=(ssize_t) shave_info->height+image->page.y;
1353 shave_image=CropImage(image,&geometry,exception);
1354 if (shave_image == (Image *) NULL)
1355 return((Image *) NULL);
1356 shave_image->page.width-=2*shave_info->width;
1357 shave_image->page.height-=2*shave_info->height;
1358 shave_image->page.x-=(ssize_t) shave_info->width;
1359 shave_image->page.y-=(ssize_t) shave_info->height;
1360 return(shave_image);
1364 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1368 % S p l i c e I m a g e %
1372 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1374 % SpliceImage() splices a solid color into the image as defined by the
1377 % The format of the SpliceImage method is:
1379 % Image *SpliceImage(const Image *image,const RectangleInfo *geometry,
1380 % ExceptionInfo *exception)
1382 % A description of each parameter follows:
1384 % o image: the image.
1386 % o geometry: Define the region of the image to splice with members
1387 % x, y, width, and height.
1389 % o exception: return any errors or warnings in this structure.
1392 MagickExport Image *SpliceImage(const Image *image,
1393 const RectangleInfo *geometry,ExceptionInfo *exception)
1395 #define SpliceImageTag "Splice/Image"
1421 Allocate splice image.
1423 assert(image != (const Image *) NULL);
1424 assert(image->signature == MagickSignature);
1425 if (image->debug != MagickFalse)
1426 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1427 assert(geometry != (const RectangleInfo *) NULL);
1428 assert(exception != (ExceptionInfo *) NULL);
1429 assert(exception->signature == MagickSignature);
1430 splice_geometry=(*geometry);
1431 splice_image=CloneImage(image,image->columns+splice_geometry.width,
1432 image->rows+splice_geometry.height,MagickTrue,exception);
1433 if (splice_image == (Image *) NULL)
1434 return((Image *) NULL);
1435 if (SetImageStorageClass(splice_image,DirectClass) == MagickFalse)
1437 InheritException(exception,&splice_image->exception);
1438 splice_image=DestroyImage(splice_image);
1439 return((Image *) NULL);
1441 (void) SetImageBackgroundColor(splice_image);
1443 Respect image geometry.
1445 switch (image->gravity)
1448 case UndefinedGravity:
1449 case NorthWestGravity:
1453 splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1456 case NorthEastGravity:
1458 splice_geometry.x+=(ssize_t) splice_geometry.width;
1463 splice_geometry.y+=(ssize_t) splice_geometry.width/2;
1469 splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1470 splice_geometry.y+=(ssize_t) splice_geometry.height/2;
1475 splice_geometry.x+=(ssize_t) splice_geometry.width;
1476 splice_geometry.y+=(ssize_t) splice_geometry.height/2;
1479 case SouthWestGravity:
1481 splice_geometry.y+=(ssize_t) splice_geometry.height;
1486 splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1487 splice_geometry.y+=(ssize_t) splice_geometry.height;
1490 case SouthEastGravity:
1492 splice_geometry.x+=(ssize_t) splice_geometry.width;
1493 splice_geometry.y+=(ssize_t) splice_geometry.height;
1503 image_view=AcquireCacheView(image);
1504 splice_view=AcquireCacheView(splice_image);
1505 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1506 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
1508 for (y=0; y < (ssize_t) splice_geometry.y; y++)
1510 register const PixelPacket
1513 register IndexPacket
1515 *restrict splice_indexes;
1520 register PixelPacket
1523 if (status == MagickFalse)
1525 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1526 q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
1528 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
1533 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1534 splice_indexes=GetCacheViewAuthenticIndexQueue(splice_view);
1535 for (x=0; x < splice_geometry.x; x++)
1537 SetRedPixelComponent(q,GetRedPixelComponent(p));
1538 SetGreenPixelComponent(q,GetGreenPixelComponent(p));
1539 SetBluePixelComponent(q,GetBluePixelComponent(p));
1540 SetOpacityPixelComponent(q,OpaqueOpacity);
1541 if (image->matte != MagickFalse)
1542 SetOpacityPixelComponent(q,GetOpacityPixelComponent(p));
1543 if (image->colorspace == CMYKColorspace)
1544 splice_indexes[x]=(*indexes++);
1548 for ( ; x < (ssize_t) (splice_geometry.x+splice_geometry.width); x++)
1550 for ( ; x < (ssize_t) splice_image->columns; x++)
1552 SetRedPixelComponent(q,GetRedPixelComponent(p));
1553 SetGreenPixelComponent(q,GetGreenPixelComponent(p));
1554 SetBluePixelComponent(q,GetBluePixelComponent(p));
1555 SetOpacityPixelComponent(q,OpaqueOpacity);
1556 if (image->matte != MagickFalse)
1557 SetOpacityPixelComponent(q,GetOpacityPixelComponent(p));
1558 if (image->colorspace == CMYKColorspace)
1559 splice_indexes[x]=(*indexes++);
1563 if (SyncCacheViewAuthenticPixels(splice_view,exception) == MagickFalse)
1565 proceed=SetImageProgress(image,SpliceImageTag,(MagickOffsetType) y,
1566 splice_image->rows);
1567 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1572 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1573 #pragma omp critical (MagickCore_TransposeImage)
1575 proceed=SetImageProgress(image,SpliceImageTag,progress++,
1576 splice_image->rows);
1577 if (proceed == MagickFalse)
1581 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1582 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
1584 for (y=(ssize_t) (splice_geometry.y+splice_geometry.height);
1585 y < (ssize_t) splice_image->rows; y++)
1587 register const PixelPacket
1590 register IndexPacket
1592 *restrict splice_indexes;
1597 register PixelPacket
1600 if (status == MagickFalse)
1602 p=GetCacheViewVirtualPixels(image_view,0,y-(ssize_t) splice_geometry.height,
1603 image->columns,1,exception);
1604 q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
1606 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
1611 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1612 splice_indexes=GetCacheViewAuthenticIndexQueue(splice_view);
1613 for (x=0; x < splice_geometry.x; x++)
1615 SetRedPixelComponent(q,GetRedPixelComponent(p));
1616 SetGreenPixelComponent(q,GetGreenPixelComponent(p));
1617 SetBluePixelComponent(q,GetBluePixelComponent(p));
1618 SetOpacityPixelComponent(q,OpaqueOpacity);
1619 if (image->matte != MagickFalse)
1620 SetOpacityPixelComponent(q,GetOpacityPixelComponent(p));
1621 if (image->colorspace == CMYKColorspace)
1622 splice_indexes[x]=(*indexes++);
1626 for ( ; x < (ssize_t) (splice_geometry.x+splice_geometry.width); x++)
1628 for ( ; x < (ssize_t) splice_image->columns; x++)
1630 SetRedPixelComponent(q,GetRedPixelComponent(p));
1631 SetGreenPixelComponent(q,GetGreenPixelComponent(p));
1632 SetBluePixelComponent(q,GetBluePixelComponent(p));
1633 SetOpacityPixelComponent(q,OpaqueOpacity);
1634 if (image->matte != MagickFalse)
1635 SetOpacityPixelComponent(q,GetOpacityPixelComponent(p));
1636 if (image->colorspace == CMYKColorspace)
1637 splice_indexes[x]=(*indexes++);
1641 if (SyncCacheViewAuthenticPixels(splice_view,exception) == MagickFalse)
1643 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1648 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1649 #pragma omp critical (MagickCore_TransposeImage)
1651 proceed=SetImageProgress(image,SpliceImageTag,progress++,
1652 splice_image->rows);
1653 if (proceed == MagickFalse)
1657 splice_view=DestroyCacheView(splice_view);
1658 image_view=DestroyCacheView(image_view);
1659 if (status == MagickFalse)
1660 splice_image=DestroyImage(splice_image);
1661 return(splice_image);
1665 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1669 % T r a n s f o r m I m a g e %
1673 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1675 % TransformImage() is a convenience method that behaves like ResizeImage() or
1676 % CropImage() but accepts scaling and/or cropping information as a region
1677 % geometry specification. If the operation fails, the original image handle
1680 % The format of the TransformImage method is:
1682 % MagickBooleanType TransformImage(Image **image,const char *crop_geometry,
1683 % const char *image_geometry)
1685 % A description of each parameter follows:
1687 % o image: the image The transformed image is returned as this parameter.
1689 % o crop_geometry: A crop geometry string. This geometry defines a
1690 % subregion of the image to crop.
1692 % o image_geometry: An image geometry string. This geometry defines the
1693 % final size of the image.
1696 static inline ssize_t MagickRound(MagickRealType x)
1699 Round the fraction to nearest integer.
1702 return((ssize_t) (x+0.5));
1703 return((ssize_t) (x-0.5));
1706 MagickExport MagickBooleanType TransformImage(Image **image,
1707 const char *crop_geometry,const char *image_geometry)
1728 assert(image != (Image **) NULL);
1729 assert((*image)->signature == MagickSignature);
1730 if ((*image)->debug != MagickFalse)
1731 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1732 transform_image=(*image);
1733 if (crop_geometry != (const char *) NULL)
1742 Crop image to a user specified size.
1744 crop_image=NewImageList();
1745 flags=ParseGravityGeometry(transform_image,crop_geometry,&geometry,
1746 &(*image)->exception);
1747 if ((flags & AreaValue) != 0)
1757 Crop into NxM tiles (@ flag) - AT.
1759 if (geometry.width == 0)
1761 if (geometry.height == 0)
1763 width=transform_image->columns;
1764 height=transform_image->rows;
1765 if ((flags & AspectValue) == 0)
1767 width-=(geometry.x < 0 ? -1 : 1)*geometry.x;
1768 height-=(geometry.y < 0 ? -1 : 1)*geometry.y;
1772 width+=(geometry.x < 0 ? -1 : 1)*geometry.x;
1773 height+=(geometry.y < 0 ? -1 : 1)*geometry.y;
1775 delta.x=(double) width/geometry.width;
1776 delta.y=(double) height/geometry.height;
1777 next=NewImageList();
1778 for (offset.y=0; offset.y < (double) height; )
1780 if ((flags & AspectValue) == 0)
1782 crop.y=(ssize_t) MagickRound((MagickRealType) (offset.y-
1783 (geometry.y > 0 ? 0 : geometry.y)));
1785 crop.height=(size_t) MagickRound((MagickRealType)
1786 (offset.y+(geometry.y < 0 ? 0 : geometry.y)));
1790 crop.y=(ssize_t) MagickRound((MagickRealType) (offset.y-
1791 (geometry.y > 0 ? geometry.y : 0)));
1793 crop.height=(size_t) MagickRound((MagickRealType)
1794 (offset.y+(geometry.y < 0 ? geometry.y : 0)));
1796 crop.height-=crop.y;
1797 crop.y+=transform_image->page.y;
1798 for (offset.x=0; offset.x < (double) width; )
1800 if ((flags & AspectValue) == 0)
1802 crop.x=(ssize_t) MagickRound((MagickRealType) (offset.x-
1803 (geometry.x > 0 ? 0 : geometry.x)));
1805 crop.width=(size_t) MagickRound((MagickRealType)
1806 (offset.x+(geometry.x < 0 ? 0 : geometry.x)));
1810 crop.x=(ssize_t) MagickRound((MagickRealType) (offset.x-
1811 (geometry.x > 0 ? geometry.x : 0)));
1813 crop.width=(size_t) MagickRound((MagickRealType)
1814 (offset.x+(geometry.x < 0 ? geometry.x : 0)));
1817 crop.x+=transform_image->page.x;
1818 next=CropImage(transform_image,&crop,&(*image)->exception);
1819 if (next == (Image *) NULL)
1821 AppendImageToList(&crop_image,next);
1823 if (next == (Image *) NULL)
1828 if (((geometry.width == 0) && (geometry.height == 0)) ||
1829 ((flags & XValue) != 0) || ((flags & YValue) != 0))
1832 Crop a single region at +X+Y.
1834 crop_image=CropImage(transform_image,&geometry,
1835 &(*image)->exception);
1836 if ((crop_image != (Image *) NULL) && ((flags & AspectValue) != 0))
1838 crop_image->page.width=geometry.width;
1839 crop_image->page.height=geometry.height;
1840 crop_image->page.x-=geometry.x;
1841 crop_image->page.y-=geometry.y;
1845 if ((transform_image->columns > geometry.width) ||
1846 (transform_image->rows > geometry.height))
1851 MagickProgressMonitor
1864 Crop into tiles of fixed size WxH.
1866 if (transform_image->page.width == 0)
1867 transform_image->page.width=transform_image->columns;
1868 if (transform_image->page.height == 0)
1869 transform_image->page.height=transform_image->rows;
1870 width=geometry.width;
1872 width=transform_image->page.width;
1873 height=geometry.height;
1875 height=transform_image->page.height;
1876 next=NewImageList();
1880 page=transform_image->page;
1881 for (y=0; y < (ssize_t) page.height; y+=(ssize_t) height)
1882 for (x=0; x < (ssize_t) page.width; x+=(ssize_t) width)
1884 for (y=0; y < (ssize_t) page.height; y+=(ssize_t) height)
1886 for (x=0; x < (ssize_t) page.width; x+=(ssize_t) width)
1888 progress_monitor=SetImageProgressMonitor(transform_image,
1889 (MagickProgressMonitor) NULL,transform_image->client_data);
1890 geometry.width=width;
1891 geometry.height=height;
1894 next=CropImage(transform_image,&geometry,&(*image)->exception);
1895 (void) SetImageProgressMonitor(transform_image,
1896 progress_monitor,transform_image->client_data);
1897 proceed=SetImageProgress(transform_image,CropImageTag,i++,
1899 if (proceed == MagickFalse)
1901 if (next == (Image *) NULL)
1903 (void) SetImageProgressMonitor(next,progress_monitor,
1905 if (crop_image == (Image *) NULL)
1909 next->previous=crop_image;
1910 crop_image->next=next;
1911 crop_image=crop_image->next;
1914 if (next == (Image *) NULL)
1916 if (proceed == MagickFalse)
1920 if (crop_image == (Image *) NULL)
1921 transform_image=CloneImage(*image,0,0,MagickTrue,&(*image)->exception);
1924 transform_image=DestroyImage(transform_image);
1925 transform_image=GetFirstImageInList(crop_image);
1927 *image=transform_image;
1929 if (image_geometry == (const char *) NULL)
1932 Scale image to a user specified size.
1934 flags=ParseRegionGeometry(transform_image,image_geometry,&geometry,
1935 &(*image)->exception);
1936 if ((transform_image->columns == geometry.width) &&
1937 (transform_image->rows == geometry.height))
1939 resize_image=ResizeImage(transform_image,geometry.width,geometry.height,
1940 transform_image->filter,transform_image->blur,&(*image)->exception);
1941 if (resize_image == (Image *) NULL)
1942 return(MagickFalse);
1943 transform_image=DestroyImage(transform_image);
1944 transform_image=resize_image;
1945 *image=transform_image;
1950 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1954 % T r a n s f o r m I m a g e s %
1957 % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1959 % TransformImages() calls TransformImage() on each image of a sequence.
1961 % The format of the TransformImage method is:
1963 % MagickBooleanType TransformImages(Image **image,
1964 % const char *crop_geometry,const char *image_geometry)
1966 % A description of each parameter follows:
1968 % o image: the image The transformed image is returned as this parameter.
1970 % o crop_geometry: A crop geometry string. This geometry defines a
1971 % subregion of the image to crop.
1973 % o image_geometry: An image geometry string. This geometry defines the
1974 % final size of the image.
1977 MagickExport MagickBooleanType TransformImages(Image **images,
1978 const char *crop_geometry,const char *image_geometry)
1991 assert(images != (Image **) NULL);
1992 assert((*images)->signature == MagickSignature);
1993 if ((*images)->debug != MagickFalse)
1994 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1995 (*images)->filename);
1996 image_list=ImageListToArray(*images,&(*images)->exception);
1997 if (image_list == (Image **) NULL)
1998 return(MagickFalse);
2000 transform_images=NewImageList();
2001 for (i=0; image_list[i] != (Image *) NULL; i++)
2003 image=image_list[i];
2004 status|=TransformImage(&image,crop_geometry,image_geometry);
2005 AppendImageToList(&transform_images,image);
2007 *images=transform_images;
2008 image_list=(Image **) RelinquishMagickMemory(image_list);
2009 return(status != 0 ? MagickTrue : MagickFalse);
2013 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2017 % T r a n s p o s e I m a g e %
2021 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2023 % TransposeImage() creates a horizontal mirror image by reflecting the pixels
2024 % around the central y-axis while rotating them by 90 degrees.
2026 % The format of the TransposeImage method is:
2028 % Image *TransposeImage(const Image *image,ExceptionInfo *exception)
2030 % A description of each parameter follows:
2032 % o image: the image.
2034 % o exception: return any errors or warnings in this structure.
2037 MagickExport Image *TransposeImage(const Image *image,ExceptionInfo *exception)
2039 #define TransposeImageTag "Transpose/Image"
2060 assert(image != (const Image *) NULL);
2061 assert(image->signature == MagickSignature);
2062 if (image->debug != MagickFalse)
2063 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2064 assert(exception != (ExceptionInfo *) NULL);
2065 assert(exception->signature == MagickSignature);
2066 transpose_image=CloneImage(image,image->rows,image->columns,MagickTrue,
2068 if (transpose_image == (Image *) NULL)
2069 return((Image *) NULL);
2075 image_view=AcquireCacheView(image);
2076 transpose_view=AcquireCacheView(transpose_image);
2077 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2078 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
2080 for (y=0; y < (ssize_t) image->rows; y++)
2082 register const PixelPacket
2085 register IndexPacket
2086 *restrict transpose_indexes,
2089 register PixelPacket
2092 if (status == MagickFalse)
2094 p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-y-1,
2095 image->columns,1,exception);
2096 q=QueueCacheViewAuthenticPixels(transpose_view,(ssize_t) (image->rows-y-1),
2097 0,1,transpose_image->rows,exception);
2098 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
2103 (void) CopyMagickMemory(q,p,(size_t) image->columns*sizeof(*q));
2104 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2105 if (indexes != (IndexPacket *) NULL)
2107 transpose_indexes=GetCacheViewAuthenticIndexQueue(transpose_view);
2108 if (transpose_indexes != (IndexPacket *) NULL)
2109 (void) CopyMagickMemory(transpose_indexes,indexes,(size_t)
2110 image->columns*sizeof(*transpose_indexes));
2112 if (SyncCacheViewAuthenticPixels(transpose_view,exception) == MagickFalse)
2114 if (image->progress_monitor != (MagickProgressMonitor) NULL)
2119 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2120 #pragma omp critical (MagickCore_TransposeImage)
2122 proceed=SetImageProgress(image,TransposeImageTag,progress++,
2124 if (proceed == MagickFalse)
2128 transpose_view=DestroyCacheView(transpose_view);
2129 image_view=DestroyCacheView(image_view);
2130 transpose_image->type=image->type;
2131 page=transpose_image->page;
2132 Swap(page.width,page.height);
2133 Swap(page.x,page.y);
2134 if (page.width != 0)
2135 page.x=(ssize_t) (page.width-transpose_image->columns-page.x);
2136 transpose_image->page=page;
2137 if (status == MagickFalse)
2138 transpose_image=DestroyImage(transpose_image);
2139 return(transpose_image);
2143 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2147 % T r a n s v e r s e I m a g e %
2151 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2153 % TransverseImage() creates a vertical mirror image by reflecting the pixels
2154 % around the central x-axis while rotating them by 270 degrees.
2156 % The format of the TransverseImage method is:
2158 % Image *TransverseImage(const Image *image,ExceptionInfo *exception)
2160 % A description of each parameter follows:
2162 % o image: the image.
2164 % o exception: return any errors or warnings in this structure.
2167 MagickExport Image *TransverseImage(const Image *image,ExceptionInfo *exception)
2169 #define TransverseImageTag "Transverse/Image"
2190 assert(image != (const Image *) NULL);
2191 assert(image->signature == MagickSignature);
2192 if (image->debug != MagickFalse)
2193 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2194 assert(exception != (ExceptionInfo *) NULL);
2195 assert(exception->signature == MagickSignature);
2196 transverse_image=CloneImage(image,image->rows,image->columns,MagickTrue,
2198 if (transverse_image == (Image *) NULL)
2199 return((Image *) NULL);
2205 image_view=AcquireCacheView(image);
2206 transverse_view=AcquireCacheView(transverse_image);
2207 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2208 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
2210 for (y=0; y < (ssize_t) image->rows; y++)
2215 register const PixelPacket
2218 register IndexPacket
2219 *restrict transverse_indexes,
2225 register PixelPacket
2228 if (status == MagickFalse)
2230 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
2231 q=QueueCacheViewAuthenticPixels(transverse_view,(ssize_t) (image->rows-y-
2232 1),0,1,transverse_image->rows,exception);
2233 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
2239 for (x=0; x < (ssize_t) image->columns; x++)
2241 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2242 if (indexes != (IndexPacket *) NULL)
2244 transverse_indexes=GetCacheViewAuthenticIndexQueue(transverse_view);
2245 if (transverse_indexes != (IndexPacket *) NULL)
2246 for (x=0; x < (ssize_t) image->columns; x++)
2247 transverse_indexes[image->columns-x-1]=indexes[x];
2249 sync=SyncCacheViewAuthenticPixels(transverse_view,exception);
2250 if (sync == MagickFalse)
2252 if (image->progress_monitor != (MagickProgressMonitor) NULL)
2257 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2258 #pragma omp critical (MagickCore_TransverseImage)
2260 proceed=SetImageProgress(image,TransverseImageTag,progress++,
2262 if (proceed == MagickFalse)
2266 transverse_view=DestroyCacheView(transverse_view);
2267 image_view=DestroyCacheView(image_view);
2268 transverse_image->type=image->type;
2269 page=transverse_image->page;
2270 Swap(page.width,page.height);
2271 Swap(page.x,page.y);
2272 if (page.height != 0)
2273 page.y=(ssize_t) (page.height-transverse_image->rows-page.y);
2274 transverse_image->page=page;
2275 if (status == MagickFalse)
2276 transverse_image=DestroyImage(transverse_image);
2277 return(transverse_image);
2281 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2285 % T r i m I m a g e %
2289 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2291 % TrimImage() trims pixels from the image edges. It allocates the memory
2292 % necessary for the new Image structure and returns a pointer to the new
2295 % The format of the TrimImage method is:
2297 % Image *TrimImage(const Image *image,ExceptionInfo *exception)
2299 % A description of each parameter follows:
2301 % o image: the image.
2303 % o exception: return any errors or warnings in this structure.
2306 MagickExport Image *TrimImage(const Image *image,ExceptionInfo *exception)
2311 assert(image != (const Image *) NULL);
2312 assert(image->signature == MagickSignature);
2313 if (image->debug != MagickFalse)
2314 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2315 geometry=GetImageBoundingBox(image,exception);
2316 if ((geometry.width == 0) || (geometry.height == 0))
2321 crop_image=CloneImage(image,1,1,MagickTrue,exception);
2322 if (crop_image == (Image *) NULL)
2323 return((Image *) NULL);
2324 crop_image->background_color.opacity=(Quantum) TransparentOpacity;
2325 (void) SetImageBackgroundColor(crop_image);
2326 crop_image->page=image->page;
2327 crop_image->page.x=(-1);
2328 crop_image->page.y=(-1);
2331 geometry.x+=image->page.x;
2332 geometry.y+=image->page.y;
2333 return(CropImage(image,&geometry,exception));