granicus.if.org Git - imagemagick/blob - MagickCore/image.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                     IIIII  M   M   AAA    GGGG  EEEEE                       %
   7 %                       I    MM MM  A   A  G      E                           %
   8 %                       I    M M M  AAAAA  G  GG  EEE                         %
   9 %                       I    M   M  A   A  G   G  E                           %
  10 %                     IIIII  M   M  A   A   GGGG  EEEEE                       %
  11 %                                                                             %
  12 %                                                                             %
  13 %                           MagickCore Image Methods                          %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2011 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 %    http://www.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 \f
  40 /*
  41   Include declarations.
  42 */
  43 #include "MagickCore/studio.h"
  44 #include "MagickCore/animate.h"
  45 #include "MagickCore/artifact.h"
  46 #include "MagickCore/attribute.h"
  47 #include "MagickCore/blob.h"
  48 #include "MagickCore/blob-private.h"
  49 #include "MagickCore/cache.h"
  50 #include "MagickCore/cache-private.h"
  51 #include "MagickCore/cache-view.h"
  52 #include "MagickCore/client.h"
  53 #include "MagickCore/color.h"
  54 #include "MagickCore/color-private.h"
  55 #include "MagickCore/colormap.h"
  56 #include "MagickCore/colorspace.h"
  57 #include "MagickCore/colorspace-private.h"
  58 #include "MagickCore/composite.h"
  59 #include "MagickCore/composite-private.h"
  60 #include "MagickCore/compress.h"
  61 #include "MagickCore/constitute.h"
  62 #include "MagickCore/display.h"
  63 #include "MagickCore/draw.h"
  64 #include "MagickCore/enhance.h"
  65 #include "MagickCore/exception.h"
  66 #include "MagickCore/exception-private.h"
  67 #include "MagickCore/gem.h"
  68 #include "MagickCore/geometry.h"
  69 #include "MagickCore/histogram.h"
  70 #include "MagickCore/image-private.h"
  71 #include "MagickCore/list.h"
  72 #include "MagickCore/magic.h"
  73 #include "MagickCore/magick.h"
  74 #include "MagickCore/magick-private.h"
  75 #include "MagickCore/memory_.h"
  76 #include "MagickCore/module.h"
  77 #include "MagickCore/monitor.h"
  78 #include "MagickCore/monitor-private.h"
  79 #include "MagickCore/option.h"
  80 #include "MagickCore/paint.h"
  81 #include "MagickCore/pixel-accessor.h"
  82 #include "MagickCore/profile.h"
  83 #include "MagickCore/property.h"
  84 #include "MagickCore/quantize.h"
  85 #include "MagickCore/random_.h"
  86 #include "MagickCore/segment.h"
  87 #include "MagickCore/semaphore.h"
  88 #include "MagickCore/signature-private.h"
  89 #include "MagickCore/statistic.h"
  90 #include "MagickCore/string_.h"
  91 #include "MagickCore/string-private.h"
  92 #include "MagickCore/thread-private.h"
  93 #include "MagickCore/threshold.h"
  94 #include "MagickCore/timer.h"
  95 #include "MagickCore/utility.h"
  96 #include "MagickCore/utility-private.h"
  97 #include "MagickCore/version.h"
  98 #include "MagickCore/xwindow-private.h"
  99 \f
 100 /*
 101   Constant declaration.
 102 */
 103 const char
 104   BackgroundColor[] = "#ffffff",  /* white */
 105   BorderColor[] = "#dfdfdf",  /* gray */
 106   DefaultTileFrame[] = "15x15+3+3",
 107   DefaultTileGeometry[] = "120x120+4+3>",
 108   DefaultTileLabel[] = "%f\n%G\n%b",
 109   ForegroundColor[] = "#000",  /* black */
 110   LoadImageTag[] = "Load/Image",
 111   LoadImagesTag[] = "Load/Images",
 112   MatteColor[] = "#bdbdbd",  /* gray */
 113   PSDensityGeometry[] = "72.0x72.0",
 114   PSPageGeometry[] = "612x792",
 115   SaveImageTag[] = "Save/Image",
 116   SaveImagesTag[] = "Save/Images",
 117   TransparentColor[] = "#00000000";  /* transparent black */
 118
 119 const double
 120   DefaultResolution = 72.0;
 121 \f
 122 /*
 123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 124 %                                                                             %
 125 %                                                                             %
 126 %                                                                             %
 127 %   A c q u i r e I m a g e                                                   %
 128 %                                                                             %
 129 %                                                                             %
 130 %                                                                             %
 131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 132 %
 133 %  AcquireImage() returns a pointer to an image structure initialized to
 134 %  default values.
 135 %
 136 %  The format of the AcquireImage method is:
 137 %
 138 %      Image *AcquireImage(const ImageInfo *image_info,ExceptionInfo *exception)
 139 %
 140 %  A description of each parameter follows:
 141 %
 142 %    o image_info: Many of the image default values are set from this
 143 %      structure.  For example, filename, compression, depth, background color,
 144 %      and others.
 145 %
 146 %    o exception: return any errors or warnings in this structure.
 147 %
 148 */
 149 MagickExport Image *AcquireImage(const ImageInfo *image_info,
 150   ExceptionInfo *exception)
 151 {
 152   const char
 153     *option;
 154
 155   Image
 156     *image;
 157
 158   MagickStatusType
 159     flags;
 160
 161   /*
 162     Allocate image structure.
 163   */
 164   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
 165   image=(Image *) AcquireMagickMemory(sizeof(*image));
 166   if (image == (Image *) NULL)
 167     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 168   (void) ResetMagickMemory(image,0,sizeof(*image));
 169   /*
 170     Initialize Image structure.
 171   */
 172   (void) CopyMagickString(image->magick,"MIFF",MaxTextExtent);
 173   image->storage_class=DirectClass;
 174   image->depth=MAGICKCORE_QUANTUM_DEPTH;
 175   image->colorspace=RGBColorspace;
 176   image->interlace=NoInterlace;
 177   image->ticks_per_second=UndefinedTicksPerSecond;
 178   image->compose=OverCompositeOp;
 179   image->blur=1.0;
 180   (void) QueryColorCompliance(BackgroundColor,AllCompliance,
 181     &image->background_color,exception);
 182   (void) QueryColorCompliance(BorderColor,AllCompliance,&image->border_color,
 183     exception);
 184   (void) QueryColorCompliance(MatteColor,AllCompliance,&image->matte_color,
 185     exception);
 186   (void) QueryColorCompliance(TransparentColor,AllCompliance,
 187     &image->transparent_color,exception);
 188   image->x_resolution=DefaultResolution;
 189   image->y_resolution=DefaultResolution;
 190   image->units=PixelsPerInchResolution;
 191   GetTimerInfo(&image->timer);
 192   image->ping=MagickFalse;
 193   image->cache=AcquirePixelCache(0);
 194   image->channel_mask=DefaultChannels;
 195   image->channel_map=AcquirePixelChannelMap();
 196   image->blob=CloneBlobInfo((BlobInfo *) NULL);
 197   image->debug=IsEventLogging();
 198   image->reference_count=1;
 199   image->semaphore=AllocateSemaphoreInfo();
 200   image->signature=MagickSignature;
 201   if (image_info == (ImageInfo *) NULL)
 202     return(image);
 203   /*
 204     Transfer image info.
 205   */
 206   SetBlobExempt(image,image_info->file != (FILE *) NULL ? MagickTrue :
 207     MagickFalse);
 208   (void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
 209   (void) CopyMagickString(image->magick_filename,image_info->filename,
 210     MaxTextExtent);
 211   (void) CopyMagickString(image->magick,image_info->magick,MaxTextExtent);
 212   if (image_info->size != (char *) NULL)
 213     {
 214       (void) ParseAbsoluteGeometry(image_info->size,&image->extract_info);
 215       image->columns=image->extract_info.width;
 216       image->rows=image->extract_info.height;
 217       image->offset=image->extract_info.x;
 218       image->extract_info.x=0;
 219       image->extract_info.y=0;
 220     }
 221   if (image_info->extract != (char *) NULL)
 222     {
 223       RectangleInfo
 224         geometry;
 225
 226       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 227       if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 228         {
 229           image->extract_info=geometry;
 230           Swap(image->columns,image->extract_info.width);
 231           Swap(image->rows,image->extract_info.height);
 232         }
 233     }
 234   image->compression=image_info->compression;
 235   image->quality=image_info->quality;
 236   image->endian=image_info->endian;
 237   image->interlace=image_info->interlace;
 238   image->units=image_info->units;
 239   if (image_info->density != (char *) NULL)
 240     {
 241       GeometryInfo
 242         geometry_info;
 243
 244       flags=ParseGeometry(image_info->density,&geometry_info);
 245       image->x_resolution=geometry_info.rho;
 246       image->y_resolution=geometry_info.sigma;
 247       if ((flags & SigmaValue) == 0)
 248         image->y_resolution=image->x_resolution;
 249     }
 250   if (image_info->page != (char *) NULL)
 251     {
 252       char
 253         *geometry;
 254
 255       image->page=image->extract_info;
 256       geometry=GetPageGeometry(image_info->page);
 257       (void) ParseAbsoluteGeometry(geometry,&image->page);
 258       geometry=DestroyString(geometry);
 259     }
 260   if (image_info->depth != 0)
 261     image->depth=image_info->depth;
 262   image->dither=image_info->dither;
 263   image->background_color=image_info->background_color;
 264   image->border_color=image_info->border_color;
 265   image->matte_color=image_info->matte_color;
 266   image->transparent_color=image_info->transparent_color;
 267   image->ping=image_info->ping;
 268   image->progress_monitor=image_info->progress_monitor;
 269   image->client_data=image_info->client_data;
 270   if (image_info->cache != (void *) NULL)
 271     ClonePixelCacheMethods(image->cache,image_info->cache);
 272   (void) SetImageVirtualPixelMethod(image,image_info->virtual_pixel_method);
 273   (void) SyncImageSettings(image_info,image,exception);
 274   option=GetImageOption(image_info,"delay");
 275   if (option != (const char *) NULL)
 276     {
 277       GeometryInfo
 278         geometry_info;
 279
 280       flags=ParseGeometry(option,&geometry_info);
 281       if ((flags & GreaterValue) != 0)
 282         {
 283           if (image->delay > (size_t) floor(geometry_info.rho+0.5))
 284             image->delay=(size_t) floor(geometry_info.rho+0.5);
 285         }
 286       else
 287         if ((flags & LessValue) != 0)
 288           {
 289             if (image->delay < (size_t) floor(geometry_info.rho+0.5))
 290               image->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 291           }
 292         else
 293           image->delay=(size_t) floor(geometry_info.rho+0.5);
 294       if ((flags & SigmaValue) != 0)
 295         image->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 296     }
 297   option=GetImageOption(image_info,"dispose");
 298   if (option != (const char *) NULL)
 299     image->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
 300       MagickFalse,option);
 301   return(image);
 302 }
 303 \f
 304 /*
 305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 306 %                                                                             %
 307 %                                                                             %
 308 %                                                                             %
 309 %   A c q u i r e I m a g e I n f o                                           %
 310 %                                                                             %
 311 %                                                                             %
 312 %                                                                             %
 313 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 314 %
 315 %  AcquireImageInfo() allocates the ImageInfo structure.
 316 %
 317 %  The format of the AcquireImageInfo method is:
 318 %
 319 %      ImageInfo *AcquireImageInfo(void)
 320 %
 321 */
 322 MagickExport ImageInfo *AcquireImageInfo(void)
 323 {
 324   ImageInfo
 325     *image_info;
 326
 327   image_info=(ImageInfo *) AcquireMagickMemory(sizeof(*image_info));
 328   if (image_info == (ImageInfo *) NULL)
 329     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 330   GetImageInfo(image_info);
 331   return(image_info);
 332 }
 333 \f
 334 /*
 335 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 336 %                                                                             %
 337 %                                                                             %
 338 %                                                                             %
 339 %   A c q u i r e N e x t I m a g e                                           %
 340 %                                                                             %
 341 %                                                                             %
 342 %                                                                             %
 343 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 344 %
 345 %  AcquireNextImage() initializes the next image in a sequence to
 346 %  default values.  The next member of image points to the newly allocated
 347 %  image.  If there is a memory shortage, next is assigned NULL.
 348 %
 349 %  The format of the AcquireNextImage method is:
 350 %
 351 %      void AcquireNextImage(const ImageInfo *image_info,Image *image,
 352 %        ExceptionInfo *exception)
 353 %
 354 %  A description of each parameter follows:
 355 %
 356 %    o image_info: Many of the image default values are set from this
 357 %      structure.  For example, filename, compression, depth, background color,
 358 %      and others.
 359 %
 360 %    o image: the image.
 361 %
 362 %    o exception: return any errors or warnings in this structure.
 363 %
 364 */
 365 MagickExport void AcquireNextImage(const ImageInfo *image_info,Image *image,
 366   ExceptionInfo *exception)
 367 {
 368   /*
 369     Allocate image structure.
 370   */
 371   assert(image != (Image *) NULL);
 372   assert(image->signature == MagickSignature);
 373   if (image->debug != MagickFalse)
 374     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 375   image->next=AcquireImage(image_info,exception);
 376   if (GetNextImageInList(image) == (Image *) NULL)
 377     return;
 378   (void) CopyMagickString(GetNextImageInList(image)->filename,image->filename,
 379     MaxTextExtent);
 380   if (image_info != (ImageInfo *) NULL)
 381     (void) CopyMagickString(GetNextImageInList(image)->filename,
 382       image_info->filename,MaxTextExtent);
 383   DestroyBlob(GetNextImageInList(image));
 384   image->next->blob=ReferenceBlob(image->blob);
 385   image->next->endian=image->endian;
 386   image->next->scene=image->scene+1;
 387   image->next->previous=image;
 388 }
 389 \f
 390 /*
 391 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 392 %                                                                             %
 393 %                                                                             %
 394 %                                                                             %
 395 %     A p p e n d I m a g e s                                                 %
 396 %                                                                             %
 397 %                                                                             %
 398 %                                                                             %
 399 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 400 %
 401 %  AppendImages() takes all images from the current image pointer to the end
 402 %  of the image list and appends them to each other top-to-bottom if the
 403 %  stack parameter is true, otherwise left-to-right.
 404 %
 405 %  The current gravity setting now effects how the image is justified in the
 406 %  final image.
 407 %
 408 %  The format of the AppendImages method is:
 409 %
 410 %      Image *AppendImages(const Image *images,const MagickBooleanType stack,
 411 %        ExceptionInfo *exception)
 412 %
 413 %  A description of each parameter follows:
 414 %
 415 %    o images: the image sequence.
 416 %
 417 %    o stack: A value other than 0 stacks the images top-to-bottom.
 418 %
 419 %    o exception: return any errors or warnings in this structure.
 420 %
 421 */
 422 MagickExport Image *AppendImages(const Image *images,
 423   const MagickBooleanType stack,ExceptionInfo *exception)
 424 {
 425 #define AppendImageTag  "Append/Image"
 426
 427   CacheView
 428     *append_view,
 429     *image_view;
 430
 431   const Image
 432     *image;
 433
 434   Image
 435     *append_image;
 436
 437   MagickBooleanType
 438     matte,
 439     proceed,
 440     status;
 441
 442   MagickOffsetType
 443     n;
 444
 445   RectangleInfo
 446     geometry;
 447
 448   register const Image
 449     *next;
 450
 451   size_t
 452     height,
 453     number_images,
 454     width;
 455
 456   ssize_t
 457     x_offset,
 458     y,
 459     y_offset;
 460
 461   /*
 462     Compute maximum area of appended area.
 463   */
 464   assert(images != (Image *) NULL);
 465   assert(images->signature == MagickSignature);
 466   if (images->debug != MagickFalse)
 467     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
 468   assert(exception != (ExceptionInfo *) NULL);
 469   assert(exception->signature == MagickSignature);
 470   image=images;
 471   matte=image->matte;
 472   number_images=1;
 473   width=image->columns;
 474   height=image->rows;
 475   next=GetNextImageInList(image);
 476   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
 477   {
 478     if (next->matte != MagickFalse)
 479       matte=MagickTrue;
 480     number_images++;
 481     if (stack != MagickFalse)
 482       {
 483         if (next->columns > width)
 484           width=next->columns;
 485         height+=next->rows;
 486         continue;
 487       }
 488     width+=next->columns;
 489     if (next->rows > height)
 490       height=next->rows;
 491   }
 492   /*
 493     Append images.
 494   */
 495   append_image=CloneImage(image,width,height,MagickTrue,exception);
 496   if (append_image == (Image *) NULL)
 497     return((Image *) NULL);
 498   if (SetImageStorageClass(append_image,DirectClass,exception) == MagickFalse)
 499     {
 500       append_image=DestroyImage(append_image);
 501       return((Image *) NULL);
 502     }
 503   append_image->matte=matte;
 504   (void) SetImageBackgroundColor(append_image,exception);
 505   status=MagickTrue;
 506   x_offset=0;
 507   y_offset=0;
 508   append_view=AcquireCacheView(append_image);
 509   for (n=0; n < (MagickOffsetType) number_images; n++)
 510   {
 511     SetGeometry(append_image,&geometry);
 512     GravityAdjustGeometry(image->columns,image->rows,image->gravity,&geometry);
 513     if (stack != MagickFalse)
 514       x_offset-=geometry.x;
 515     else
 516       y_offset-=geometry.y;
 517     image_view=AcquireCacheView(image);
 518 #if defined(MAGICKCORE_OPENMP_SUPPORT)
 519     #pragma omp parallel for schedule(dynamic,4) shared(status) omp_throttle(1)
 520 #endif
 521     for (y=0; y < (ssize_t) image->rows; y++)
 522     {
 523       MagickBooleanType
 524         sync;
 525
 526       register const Quantum
 527         *restrict p;
 528
 529       register Quantum
 530         *restrict q;
 531
 532       register ssize_t
 533         x;
 534
 535       if (status == MagickFalse)
 536         continue;
 537       p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
 538       q=QueueCacheViewAuthenticPixels(append_view,x_offset,y+y_offset,
 539         image->columns,1,exception);
 540       if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
 541         {
 542           status=MagickFalse;
 543           continue;
 544         }
 545       for (x=0; x < (ssize_t) image->columns; x++)
 546       {
 547         register ssize_t
 548           i;
 549
 550         for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
 551         {
 552           PixelChannel
 553             channel;
 554
 555           PixelTrait
 556             append_traits,
 557             traits;
 558
 559           traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
 560           channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
 561           append_traits=GetPixelChannelMapTraits(append_image,channel);
 562           if ((traits == UndefinedPixelTrait) ||
 563               (append_traits == UndefinedPixelTrait))
 564             continue;
 565           SetPixelChannel(append_image,channel,p[i],q);
 566         }
 567         p+=GetPixelChannels(image);
 568         q+=GetPixelChannels(append_image);
 569       }
 570       sync=SyncCacheViewAuthenticPixels(append_view,exception);
 571       if (sync == MagickFalse)
 572         status=MagickFalse;
 573     }
 574     image_view=DestroyCacheView(image_view);
 575     proceed=SetImageProgress(image,AppendImageTag,n,number_images);
 576     if (proceed == MagickFalse)
 577       break;
 578     if (stack == MagickFalse)
 579       {
 580         x_offset+=(ssize_t) image->columns;
 581         y_offset=0;
 582       }
 583     else
 584       {
 585         x_offset=0;
 586         y_offset+=(ssize_t) image->rows;
 587       }
 588     image=GetNextImageInList(image);
 589   }
 590   append_view=DestroyCacheView(append_view);
 591   if (status == MagickFalse)
 592     append_image=DestroyImage(append_image);
 593   return(append_image);
 594 }
 595 \f
 596 /*
 597 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 598 %                                                                             %
 599 %                                                                             %
 600 %                                                                             %
 601 %   C a t c h I m a g e E x c e p t i o n                                     %
 602 %                                                                             %
 603 %                                                                             %
 604 %                                                                             %
 605 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 606 %
 607 %  CatchImageException() returns if no exceptions are found in the image
 608 %  sequence, otherwise it determines the most severe exception and reports
 609 %  it as a warning or error depending on the severity.
 610 %
 611 %  The format of the CatchImageException method is:
 612 %
 613 %      ExceptionType CatchImageException(Image *image)
 614 %
 615 %  A description of each parameter follows:
 616 %
 617 %    o image: An image sequence.
 618 %
 619 */
 620 MagickExport ExceptionType CatchImageException(Image *image)
 621 {
 622   ExceptionInfo
 623     *exception;
 624
 625   ExceptionType
 626     severity;
 627
 628   assert(image != (const Image *) NULL);
 629   assert(image->signature == MagickSignature);
 630   if (image->debug != MagickFalse)
 631     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 632   exception=AcquireExceptionInfo();
 633   CatchException(exception);
 634   severity=exception->severity;
 635   exception=DestroyExceptionInfo(exception);
 636   return(severity);
 637 }
 638 \f
 639 /*
 640 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 641 %                                                                             %
 642 %                                                                             %
 643 %                                                                             %
 644 %   C l i p I m a g e P a t h                                                 %
 645 %                                                                             %
 646 %                                                                             %
 647 %                                                                             %
 648 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 649 %
 650 %  ClipImagePath() sets the image clip mask based any clipping path information
 651 %  if it exists.
 652 %
 653 %  The format of the ClipImagePath method is:
 654 %
 655 %      MagickBooleanType ClipImagePath(Image *image,const char *pathname,
 656 %        const MagickBooleanType inside,ExceptionInfo *exception)
 657 %
 658 %  A description of each parameter follows:
 659 %
 660 %    o image: the image.
 661 %
 662 %    o pathname: name of clipping path resource. If name is preceded by #, use
 663 %      clipping path numbered by name.
 664 %
 665 %    o inside: if non-zero, later operations take effect inside clipping path.
 666 %      Otherwise later operations take effect outside clipping path.
 667 %
 668 %    o exception: return any errors or warnings in this structure.
 669 %
 670 */
 671
 672 MagickExport MagickBooleanType ClipImage(Image *image,ExceptionInfo *exception)
 673 {
 674   return(ClipImagePath(image,"#1",MagickTrue,exception));
 675 }
 676
 677 MagickExport MagickBooleanType ClipImagePath(Image *image,const char *pathname,
 678   const MagickBooleanType inside,ExceptionInfo *exception)
 679 {
 680 #define ClipImagePathTag  "ClipPath/Image"
 681
 682   char
 683     *property;
 684
 685   const char
 686     *value;
 687
 688   Image
 689     *clip_mask;
 690
 691   ImageInfo
 692     *image_info;
 693
 694   assert(image != (const Image *) NULL);
 695   assert(image->signature == MagickSignature);
 696   if (image->debug != MagickFalse)
 697     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 698   assert(pathname != NULL);
 699   property=AcquireString(pathname);
 700   (void) FormatLocaleString(property,MaxTextExtent,"8BIM:1999,2998:%s",
 701     pathname);
 702   value=GetImageProperty(image,property,exception);
 703   property=DestroyString(property);
 704   if (value == (const char *) NULL)
 705     {
 706       ThrowFileException(exception,OptionError,"NoClipPathDefined",
 707         image->filename);
 708       return(MagickFalse);
 709     }
 710   image_info=AcquireImageInfo();
 711   (void) CopyMagickString(image_info->filename,image->filename,MaxTextExtent);
 712   (void) ConcatenateMagickString(image_info->filename,pathname,MaxTextExtent);
 713   clip_mask=BlobToImage(image_info,value,strlen(value),exception);
 714   image_info=DestroyImageInfo(image_info);
 715   if (clip_mask == (Image *) NULL)
 716     return(MagickFalse);
 717   if (clip_mask->storage_class == PseudoClass)
 718     {
 719       (void) SyncImage(clip_mask,exception);
 720       if (SetImageStorageClass(clip_mask,DirectClass,exception) == MagickFalse)
 721         return(MagickFalse);
 722     }
 723   if (inside == MagickFalse)
 724     (void) NegateImage(clip_mask,MagickFalse,exception);
 725   (void) FormatLocaleString(clip_mask->magick_filename,MaxTextExtent,
 726     "8BIM:1999,2998:%s\nPS",pathname);
 727   (void) SetImageClipMask(image,clip_mask,exception);
 728   clip_mask=DestroyImage(clip_mask);
 729   return(MagickTrue);
 730 }
 731 \f
 732 /*
 733 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 734 %                                                                             %
 735 %                                                                             %
 736 %                                                                             %
 737 %   C l o n e I m a g e                                                       %
 738 %                                                                             %
 739 %                                                                             %
 740 %                                                                             %
 741 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 742 %
 743 %  CloneImage() copies an image and returns the copy as a new image object.
 744 %
 745 %  If the specified columns and rows is 0, an exact copy of the image is
 746 %  returned, otherwise the pixel data is undefined and must be initialized
 747 %  with the QueueAuthenticPixels() and SyncAuthenticPixels() methods.  On
 748 %  failure, a NULL image is returned and exception describes the reason for the
 749 %  failure.
 750 %
 751 %  The format of the CloneImage method is:
 752 %
 753 %      Image *CloneImage(const Image *image,const size_t columns,
 754 %        const size_t rows,const MagickBooleanType orphan,
 755 %        ExceptionInfo *exception)
 756 %
 757 %  A description of each parameter follows:
 758 %
 759 %    o image: the image.
 760 %
 761 %    o columns: the number of columns in the cloned image.
 762 %
 763 %    o rows: the number of rows in the cloned image.
 764 %
 765 %    o detach:  With a value other than 0, the cloned image is detached from
 766 %      its parent I/O stream.
 767 %
 768 %    o exception: return any errors or warnings in this structure.
 769 %
 770 */
 771 MagickExport Image *CloneImage(const Image *image,const size_t columns,
 772   const size_t rows,const MagickBooleanType detach,ExceptionInfo *exception)
 773 {
 774   Image
 775     *clone_image;
 776
 777   MagickRealType
 778     scale;
 779
 780   size_t
 781     length;
 782
 783   /*
 784     Clone the image.
 785   */
 786   assert(image != (const Image *) NULL);
 787   assert(image->signature == MagickSignature);
 788   if (image->debug != MagickFalse)
 789     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 790   assert(exception != (ExceptionInfo *) NULL);
 791   assert(exception->signature == MagickSignature);
 792   clone_image=(Image *) AcquireMagickMemory(sizeof(*clone_image));
 793   if (clone_image == (Image *) NULL)
 794     ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
 795   (void) ResetMagickMemory(clone_image,0,sizeof(*clone_image));
 796   clone_image->signature=MagickSignature;
 797   clone_image->storage_class=image->storage_class;
 798   clone_image->number_channels=image->number_channels;
 799   clone_image->number_meta_channels=image->number_meta_channels;
 800   clone_image->metacontent_extent=image->metacontent_extent;
 801   clone_image->colorspace=image->colorspace;
 802   clone_image->matte=image->matte;
 803   clone_image->columns=image->columns;
 804   clone_image->rows=image->rows;
 805   clone_image->dither=image->dither;
 806   if (image->colormap != (PixelInfo *) NULL)
 807     {
 808       /*
 809         Allocate and copy the image colormap.
 810       */
 811       clone_image->colors=image->colors;
 812       length=(size_t) image->colors;
 813       clone_image->colormap=(PixelInfo *) AcquireQuantumMemory(length,
 814         sizeof(*clone_image->colormap));
 815       if (clone_image->colormap == (PixelInfo *) NULL)
 816         ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
 817       (void) CopyMagickMemory(clone_image->colormap,image->colormap,length*
 818         sizeof(*clone_image->colormap));
 819     }
 820   (void) CloneImageProfiles(clone_image,image);
 821   (void) CloneImageProperties(clone_image,image);
 822   (void) CloneImageArtifacts(clone_image,image);
 823   GetTimerInfo(&clone_image->timer);
 824   if (image->ascii85 != (void *) NULL)
 825     Ascii85Initialize(clone_image);
 826   clone_image->magick_columns=image->magick_columns;
 827   clone_image->magick_rows=image->magick_rows;
 828   clone_image->type=image->type;
 829   clone_image->channel_mask=image->channel_mask;
 830   clone_image->channel_map=ClonePixelChannelMap(image->channel_map);
 831   (void) CopyMagickString(clone_image->magick_filename,image->magick_filename,
 832     MaxTextExtent);
 833   (void) CopyMagickString(clone_image->magick,image->magick,MaxTextExtent);
 834   (void) CopyMagickString(clone_image->filename,image->filename,MaxTextExtent);
 835   clone_image->progress_monitor=image->progress_monitor;
 836   clone_image->client_data=image->client_data;
 837   clone_image->reference_count=1;
 838   clone_image->next=image->next;
 839   clone_image->previous=image->previous;
 840   clone_image->list=NewImageList();
 841   clone_image->clip_mask=NewImageList();
 842   clone_image->mask=NewImageList();
 843   if (detach == MagickFalse)
 844     clone_image->blob=ReferenceBlob(image->blob);
 845   else
 846     {
 847       clone_image->next=NewImageList();
 848       clone_image->previous=NewImageList();
 849       clone_image->blob=CloneBlobInfo((BlobInfo *) NULL);
 850     }
 851   clone_image->ping=image->ping;
 852   clone_image->debug=IsEventLogging();
 853   clone_image->semaphore=AllocateSemaphoreInfo();
 854   if ((columns == 0) && (rows == 0))
 855     {
 856       if (image->montage != (char *) NULL)
 857         (void) CloneString(&clone_image->montage,image->montage);
 858       if (image->directory != (char *) NULL)
 859         (void) CloneString(&clone_image->directory,image->directory);
 860       if (image->clip_mask != (Image *) NULL)
 861         clone_image->clip_mask=CloneImage(image->clip_mask,0,0,MagickTrue,
 862           exception);
 863       if (image->mask != (Image *) NULL)
 864         clone_image->mask=CloneImage(image->mask,0,0,MagickTrue,exception);
 865       clone_image->cache=ReferencePixelCache(image->cache);
 866       return(clone_image);
 867     }
 868   if ((columns == image->columns) && (rows == image->rows))
 869     {
 870       if (image->clip_mask != (Image *) NULL)
 871         clone_image->clip_mask=CloneImage(image->clip_mask,0,0,MagickTrue,
 872           exception);
 873       if (image->mask != (Image *) NULL)
 874         clone_image->mask=CloneImage(image->mask,0,0,MagickTrue,exception);
 875     }
 876   scale=(MagickRealType) columns/(MagickRealType) image->columns;
 877   clone_image->page.width=(size_t) floor(scale*image->page.width+0.5);
 878   clone_image->page.x=(ssize_t) ceil(scale*image->page.x-0.5);
 879   clone_image->tile_offset.x=(ssize_t) ceil(scale*image->tile_offset.x-0.5);
 880   scale=(MagickRealType) rows/(MagickRealType) image->rows;
 881   clone_image->page.height=(size_t) floor(scale*image->page.height+0.5);
 882   clone_image->page.y=(ssize_t) ceil(scale*image->page.y-0.5);
 883   clone_image->tile_offset.y=(ssize_t) ceil(scale*image->tile_offset.y-0.5);
 884   clone_image->columns=columns;
 885   clone_image->rows=rows;
 886   clone_image->cache=ClonePixelCache(image->cache);
 887   return(clone_image);
 888 }
 889 \f
 890 /*
 891 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 892 %                                                                             %
 893 %                                                                             %
 894 %                                                                             %
 895 %   C l o n e I m a g e I n f o                                               %
 896 %                                                                             %
 897 %                                                                             %
 898 %                                                                             %
 899 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 900 %
 901 %  CloneImageInfo() makes a copy of the given image info structure.  If
 902 %  NULL is specified, a new image info structure is created initialized to
 903 %  default values.
 904 %
 905 %  The format of the CloneImageInfo method is:
 906 %
 907 %      ImageInfo *CloneImageInfo(const ImageInfo *image_info)
 908 %
 909 %  A description of each parameter follows:
 910 %
 911 %    o image_info: the image info.
 912 %
 913 */
 914 MagickExport ImageInfo *CloneImageInfo(const ImageInfo *image_info)
 915 {
 916   ImageInfo
 917     *clone_info;
 918
 919   clone_info=AcquireImageInfo();
 920   if (image_info == (ImageInfo *) NULL)
 921     return(clone_info);
 922   clone_info->compression=image_info->compression;
 923   clone_info->temporary=image_info->temporary;
 924   clone_info->adjoin=image_info->adjoin;
 925   clone_info->antialias=image_info->antialias;
 926   clone_info->scene=image_info->scene;
 927   clone_info->number_scenes=image_info->number_scenes;
 928   clone_info->depth=image_info->depth;
 929   if (image_info->size != (char *) NULL)
 930     (void) CloneString(&clone_info->size,image_info->size);
 931   if (image_info->extract != (char *) NULL)
 932     (void) CloneString(&clone_info->extract,image_info->extract);
 933   if (image_info->scenes != (char *) NULL)
 934     (void) CloneString(&clone_info->scenes,image_info->scenes);
 935   if (image_info->page != (char *) NULL)
 936     (void) CloneString(&clone_info->page,image_info->page);
 937   clone_info->interlace=image_info->interlace;
 938   clone_info->endian=image_info->endian;
 939   clone_info->units=image_info->units;
 940   clone_info->quality=image_info->quality;
 941   if (image_info->sampling_factor != (char *) NULL)
 942     (void) CloneString(&clone_info->sampling_factor,
 943       image_info->sampling_factor);
 944   if (image_info->server_name != (char *) NULL)
 945     (void) CloneString(&clone_info->server_name,image_info->server_name);
 946   if (image_info->font != (char *) NULL)
 947     (void) CloneString(&clone_info->font,image_info->font);
 948   if (image_info->texture != (char *) NULL)
 949     (void) CloneString(&clone_info->texture,image_info->texture);
 950   if (image_info->density != (char *) NULL)
 951     (void) CloneString(&clone_info->density,image_info->density);
 952   clone_info->pointsize=image_info->pointsize;
 953   clone_info->fuzz=image_info->fuzz;
 954   clone_info->background_color=image_info->background_color;
 955   clone_info->border_color=image_info->border_color;
 956   clone_info->matte_color=image_info->matte_color;
 957   clone_info->transparent_color=image_info->transparent_color;
 958   clone_info->dither=image_info->dither;
 959   clone_info->monochrome=image_info->monochrome;
 960   clone_info->colorspace=image_info->colorspace;
 961   clone_info->type=image_info->type;
 962   clone_info->orientation=image_info->orientation;
 963   clone_info->preview_type=image_info->preview_type;
 964   clone_info->group=image_info->group;
 965   clone_info->ping=image_info->ping;
 966   clone_info->verbose=image_info->verbose;
 967   if (image_info->view != (char *) NULL)
 968     (void) CloneString(&clone_info->view,image_info->view);
 969   clone_info->progress_monitor=image_info->progress_monitor;
 970   clone_info->client_data=image_info->client_data;
 971   clone_info->cache=image_info->cache;
 972   if (image_info->cache != (void *) NULL)
 973     clone_info->cache=ReferencePixelCache(image_info->cache);
 974   if (image_info->profile != (void *) NULL)
 975     clone_info->profile=(void *) CloneStringInfo((StringInfo *)
 976       image_info->profile);
 977   SetImageInfoFile(clone_info,image_info->file);
 978   SetImageInfoBlob(clone_info,image_info->blob,image_info->length);
 979   clone_info->stream=image_info->stream;
 980   clone_info->virtual_pixel_method=image_info->virtual_pixel_method;
 981   (void) CopyMagickString(clone_info->magick,image_info->magick,MaxTextExtent);
 982   (void) CopyMagickString(clone_info->unique,image_info->unique,MaxTextExtent);
 983   (void) CopyMagickString(clone_info->zero,image_info->zero,MaxTextExtent);
 984   (void) CopyMagickString(clone_info->filename,image_info->filename,
 985     MaxTextExtent);
 986   clone_info->channel=image_info->channel;
 987
 988   (void) CloneImageOptions(clone_info,image_info);
 989   clone_info->debug=IsEventLogging();
 990   clone_info->signature=image_info->signature;
 991   return(clone_info);
 992 }
 993 \f
 994 /*
 995 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 996 %                                                                             %
 997 %                                                                             %
 998 %                                                                             %
 999 %     C o m b i n e I m a g e s                                               %
1000 %                                                                             %
1001 %                                                                             %
1002 %                                                                             %
1003 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1004 %
1005 %  CombineImages() combines one or more images into a single image.  The
1006 %  grayscale value of the pixels of each image in the sequence is assigned in
1007 %  order to the specified channels of the combined image.   The typical
1008 %  ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.
1009 %
1010 %  The format of the CombineImages method is:
1011 %
1012 %      Image *CombineImages(const Image *image,ExceptionInfo *exception)
1013 %
1014 %  A description of each parameter follows:
1015 %
1016 %    o image: the image.
1017 %
1018 %    o exception: return any errors or warnings in this structure.
1019 %
1020 */
1021
1022 static inline size_t MagickMin(const size_t x,const size_t y)
1023 {
1024   if (x < y)
1025     return(x);
1026   return(y);
1027 }
1028
1029 MagickExport Image *CombineImages(const Image *image,ExceptionInfo *exception)
1030 {
1031 #define CombineImageTag  "Combine/Image"
1032
1033   CacheView
1034     *combine_view;
1035
1036   Image
1037     *combine_image;
1038
1039   MagickBooleanType
1040     status;
1041
1042   MagickOffsetType
1043     progress;
1044
1045   ssize_t
1046     y;
1047
1048   /*
1049     Ensure the image are the same size.
1050   */
1051   assert(image != (const Image *) NULL);
1052   assert(image->signature == MagickSignature);
1053   if (image->debug != MagickFalse)
1054     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1055   assert(exception != (ExceptionInfo *) NULL);
1056   assert(exception->signature == MagickSignature);
1057   combine_image=CloneImage(image,0,0,MagickTrue,exception);
1058   if (combine_image == (Image *) NULL)
1059     return((Image *) NULL);
1060   if (SetImageStorageClass(combine_image,DirectClass,exception) == MagickFalse)
1061     {
1062       combine_image=DestroyImage(combine_image);
1063       return((Image *) NULL);
1064     }
1065   if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
1066     combine_image->matte=MagickTrue;
1067   /*
1068     Combine images.
1069   */
1070   status=MagickTrue;
1071   progress=0;
1072   combine_view=AcquireCacheView(combine_image);
1073   for (y=0; y < (ssize_t) combine_image->rows; y++)
1074   {
1075     CacheView
1076       *image_view;
1077
1078     const Image
1079       *next;
1080
1081     Quantum
1082       *pixels;
1083
1084     register const Quantum
1085       *restrict p;
1086
1087     register Quantum
1088       *restrict q;
1089
1090     register ssize_t
1091       i;
1092
1093     if (status == MagickFalse)
1094       continue;
1095     pixels=GetCacheViewAuthenticPixels(combine_view,0,y,combine_image->columns,
1096       1,exception);
1097     if (pixels == (Quantum *) NULL)
1098       {
1099         status=MagickFalse;
1100         continue;
1101       }
1102     next=image;
1103     for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1104     {
1105       PixelChannel
1106         channel;
1107
1108       PixelTrait
1109         combine_traits,
1110         traits;
1111
1112       register ssize_t
1113         x;
1114
1115       if (next == (Image *) NULL)
1116         continue;
1117       traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
1118       channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
1119       combine_traits=GetPixelChannelMapTraits(combine_image,channel);
1120       if ((traits == UndefinedPixelTrait) ||
1121           (combine_traits == UndefinedPixelTrait))
1122         continue;
1123       image_view=AcquireCacheView(next);
1124       p=GetCacheViewVirtualPixels(image_view,0,y,next->columns,1,exception);
1125       if (p == (const Quantum *) NULL)
1126         continue;
1127       q=pixels;
1128       for (x=0; x < (ssize_t) combine_image->columns; x++)
1129       {
1130         if (x < (ssize_t) image->columns)
1131           {
1132             q[i]=p[i];
1133             p+=GetPixelChannels(image);
1134           }
1135         q+=GetPixelChannels(combine_image);
1136       }
1137       image_view=DestroyCacheView(image_view);
1138       next=GetNextImageInList(next);
1139       if (SyncCacheViewAuthenticPixels(combine_view,exception) == MagickFalse)
1140         status=MagickFalse;
1141       if (image->progress_monitor != (MagickProgressMonitor) NULL)
1142         {
1143           MagickBooleanType
1144             proceed;
1145
1146           proceed=SetImageProgress(image,CombineImageTag,progress++,
1147             combine_image->rows);
1148           if (proceed == MagickFalse)
1149             status=MagickFalse;
1150         }
1151     }
1152   }
1153   combine_view=DestroyCacheView(combine_view);
1154   if (status == MagickFalse)
1155     combine_image=DestroyImage(combine_image);
1156   return(combine_image);
1157 }
1158 \f
1159 /*
1160 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1161 %                                                                             %
1162 %                                                                             %
1163 %                                                                             %
1164 %   D e s t r o y I m a g e                                                   %
1165 %                                                                             %
1166 %                                                                             %
1167 %                                                                             %
1168 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1169 %
1170 %  DestroyImage() dereferences an image, deallocating memory associated with
1171 %  the image if the reference count becomes zero.
1172 %
1173 %  The format of the DestroyImage method is:
1174 %
1175 %      Image *DestroyImage(Image *image)
1176 %
1177 %  A description of each parameter follows:
1178 %
1179 %    o image: the image.
1180 %
1181 */
1182 MagickExport Image *DestroyImage(Image *image)
1183 {
1184   MagickBooleanType
1185     destroy;
1186
1187   /*
1188     Dereference image.
1189   */
1190   assert(image != (Image *) NULL);
1191   assert(image->signature == MagickSignature);
1192   if (image->debug != MagickFalse)
1193     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1194   destroy=MagickFalse;
1195   LockSemaphoreInfo(image->semaphore);
1196   image->reference_count--;
1197   if (image->reference_count == 0)
1198     destroy=MagickTrue;
1199   UnlockSemaphoreInfo(image->semaphore);
1200   if (destroy == MagickFalse)
1201     return((Image *) NULL);
1202   /*
1203     Destroy image.
1204   */
1205   DestroyImagePixels(image);
1206   image->channel_map=DestroyPixelChannelMap(image->channel_map);
1207   if (image->clip_mask != (Image *) NULL)
1208     image->clip_mask=DestroyImage(image->clip_mask);
1209   if (image->mask != (Image *) NULL)
1210     image->mask=DestroyImage(image->mask);
1211   if (image->montage != (char *) NULL)
1212     image->montage=DestroyString(image->montage);
1213   if (image->directory != (char *) NULL)
1214     image->directory=DestroyString(image->directory);
1215   if (image->colormap != (PixelInfo *) NULL)
1216     image->colormap=(PixelInfo *) RelinquishMagickMemory(image->colormap);
1217   if (image->geometry != (char *) NULL)
1218     image->geometry=DestroyString(image->geometry);
1219   DestroyImageProfiles(image);
1220   DestroyImageProperties(image);
1221   DestroyImageArtifacts(image);
1222   if (image->ascii85 != (Ascii85Info*) NULL)
1223     image->ascii85=(Ascii85Info *) RelinquishMagickMemory(image->ascii85);
1224   DestroyBlob(image);
1225   if (image->semaphore != (SemaphoreInfo *) NULL)
1226     DestroySemaphoreInfo(&image->semaphore);
1227   image->signature=(~MagickSignature);
1228   image=(Image *) RelinquishMagickMemory(image);
1229   return(image);
1230 }
1231 \f
1232 /*
1233 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1234 %                                                                             %
1235 %                                                                             %
1236 %                                                                             %
1237 %   D e s t r o y I m a g e I n f o                                           %
1238 %                                                                             %
1239 %                                                                             %
1240 %                                                                             %
1241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1242 %
1243 %  DestroyImageInfo() deallocates memory associated with an ImageInfo
1244 %  structure.
1245 %
1246 %  The format of the DestroyImageInfo method is:
1247 %
1248 %      ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1249 %
1250 %  A description of each parameter follows:
1251 %
1252 %    o image_info: the image info.
1253 %
1254 */
1255 MagickExport ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1256 {
1257   assert(image_info != (ImageInfo *) NULL);
1258   assert(image_info->signature == MagickSignature);
1259   if (image_info->debug != MagickFalse)
1260     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1261       image_info->filename);
1262   if (image_info->size != (char *) NULL)
1263     image_info->size=DestroyString(image_info->size);
1264   if (image_info->extract != (char *) NULL)
1265     image_info->extract=DestroyString(image_info->extract);
1266   if (image_info->scenes != (char *) NULL)
1267     image_info->scenes=DestroyString(image_info->scenes);
1268   if (image_info->page != (char *) NULL)
1269     image_info->page=DestroyString(image_info->page);
1270   if (image_info->sampling_factor != (char *) NULL)
1271     image_info->sampling_factor=DestroyString(
1272       image_info->sampling_factor);
1273   if (image_info->server_name != (char *) NULL)
1274     image_info->server_name=DestroyString(
1275       image_info->server_name);
1276   if (image_info->font != (char *) NULL)
1277     image_info->font=DestroyString(image_info->font);
1278   if (image_info->texture != (char *) NULL)
1279     image_info->texture=DestroyString(image_info->texture);
1280   if (image_info->density != (char *) NULL)
1281     image_info->density=DestroyString(image_info->density);
1282   if (image_info->view != (char *) NULL)
1283     image_info->view=DestroyString(image_info->view);
1284   if (image_info->cache != (void *) NULL)
1285     image_info->cache=DestroyPixelCache(image_info->cache);
1286   if (image_info->profile != (StringInfo *) NULL)
1287     image_info->profile=(void *) DestroyStringInfo((StringInfo *)
1288       image_info->profile);
1289   DestroyImageOptions(image_info);
1290   image_info->signature=(~MagickSignature);
1291   image_info=(ImageInfo *) RelinquishMagickMemory(image_info);
1292   return(image_info);
1293 }
1294 \f
1295 /*
1296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1297 %                                                                             %
1298 %                                                                             %
1299 %                                                                             %
1300 +   D i s a s s o c i a t e I m a g e S t r e a m                             %
1301 %                                                                             %
1302 %                                                                             %
1303 %                                                                             %
1304 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1305 %
1306 %  DisassociateImageStream() disassociates the image stream.
1307 %
1308 %  The format of the DisassociateImageStream method is:
1309 %
1310 %      MagickBooleanType DisassociateImageStream(const Image *image)
1311 %
1312 %  A description of each parameter follows:
1313 %
1314 %    o image: the image.
1315 %
1316 */
1317 MagickExport void DisassociateImageStream(Image *image)
1318 {
1319   assert(image != (const Image *) NULL);
1320   assert(image->signature == MagickSignature);
1321   if (image->debug != MagickFalse)
1322     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1323   (void) DetachBlob(image->blob);
1324 }
1325 \f
1326 /*
1327 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1328 %                                                                             %
1329 %                                                                             %
1330 %                                                                             %
1331 %   G e t I m a g e A l p h a C h a n n e l                                   %
1332 %                                                                             %
1333 %                                                                             %
1334 %                                                                             %
1335 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1336 %
1337 %  GetImageAlphaChannel() returns MagickFalse if the image alpha channel is
1338 %  not activated.  That is, the image is RGB rather than RGBA or CMYK rather
1339 %  than CMYKA.
1340 %
1341 %  The format of the GetImageAlphaChannel method is:
1342 %
1343 %      MagickBooleanType GetImageAlphaChannel(const Image *image)
1344 %
1345 %  A description of each parameter follows:
1346 %
1347 %    o image: the image.
1348 %
1349 */
1350 MagickExport MagickBooleanType GetImageAlphaChannel(const Image *image)
1351 {
1352   assert(image != (const Image *) NULL);
1353   if (image->debug != MagickFalse)
1354     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1355   assert(image->signature == MagickSignature);
1356   return(image->matte);
1357 }
1358 \f
1359 /*
1360 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1361 %                                                                             %
1362 %                                                                             %
1363 %                                                                             %
1364 %   G e t I m a g e C l i p M a s k                                           %
1365 %                                                                             %
1366 %                                                                             %
1367 %                                                                             %
1368 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1369 %
1370 %  GetImageClipMask() returns the clip path associated with the image.
1371 %
1372 %  The format of the GetImageClipMask method is:
1373 %
1374 %      Image *GetImageClipMask(const Image *image,ExceptionInfo *exception)
1375 %
1376 %  A description of each parameter follows:
1377 %
1378 %    o image: the image.
1379 %
1380 */
1381 MagickExport Image *GetImageClipMask(const Image *image,
1382   ExceptionInfo *exception)
1383 {
1384   assert(image != (const Image *) NULL);
1385   if (image->debug != MagickFalse)
1386     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1387   assert(image->signature == MagickSignature);
1388   if (image->clip_mask == (Image *) NULL)
1389     return((Image *) NULL);
1390   return(CloneImage(image->clip_mask,0,0,MagickTrue,exception));
1391 }
1392 \f
1393 /*
1394 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1395 %                                                                             %
1396 %                                                                             %
1397 %                                                                             %
1398 %   G e t I m a g e I n f o                                                   %
1399 %                                                                             %
1400 %                                                                             %
1401 %                                                                             %
1402 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1403 %
1404 %  GetImageInfo() initializes image_info to default values.
1405 %
1406 %  The format of the GetImageInfo method is:
1407 %
1408 %      void GetImageInfo(ImageInfo *image_info)
1409 %
1410 %  A description of each parameter follows:
1411 %
1412 %    o image_info: the image info.
1413 %
1414 */
1415 MagickExport void GetImageInfo(ImageInfo *image_info)
1416 {
1417   const char
1418     *synchronize;
1419
1420   ExceptionInfo
1421     *exception;
1422
1423   /*
1424     File and image dimension members.
1425   */
1426   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1427   assert(image_info != (ImageInfo *) NULL);
1428   (void) ResetMagickMemory(image_info,0,sizeof(*image_info));
1429   image_info->adjoin=MagickTrue;
1430   image_info->interlace=NoInterlace;
1431   image_info->channel=DefaultChannels;
1432   image_info->quality=UndefinedCompressionQuality;
1433   image_info->antialias=MagickTrue;
1434   image_info->dither=MagickTrue;
1435   synchronize=GetEnvironmentValue("MAGICK_SYNCHRONIZE");
1436   if (synchronize != (const char *) NULL)
1437     image_info->synchronize=IsMagickTrue(synchronize);
1438   exception=AcquireExceptionInfo();
1439   (void) QueryColorCompliance(BackgroundColor,AllCompliance,
1440     &image_info->background_color,exception);
1441   (void) QueryColorCompliance(BorderColor,AllCompliance,
1442     &image_info->border_color,exception);
1443   (void) QueryColorCompliance(MatteColor,AllCompliance,&image_info->matte_color,
1444     exception);
1445   (void) QueryColorCompliance(TransparentColor,AllCompliance,
1446     &image_info->transparent_color,exception);
1447   exception=DestroyExceptionInfo(exception);
1448   image_info->debug=IsEventLogging();
1449   image_info->signature=MagickSignature;
1450 }
1451 \f
1452 /*
1453 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1454 %                                                                             %
1455 %                                                                             %
1456 %                                                                             %
1457 %   G e t I m a g e I n f o F i l e                                           %
1458 %                                                                             %
1459 %                                                                             %
1460 %                                                                             %
1461 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1462 %
1463 %  GetImageInfoFile() returns the image info file member.
1464 %
1465 %  The format of the GetImageInfoFile method is:
1466 %
1467 %      FILE *GetImageInfoFile(const ImageInfo *image_info)
1468 %
1469 %  A description of each parameter follows:
1470 %
1471 %    o image_info: the image info.
1472 %
1473 */
1474 MagickExport FILE *GetImageInfoFile(const ImageInfo *image_info)
1475 {
1476   return(image_info->file);
1477 }
1478 \f
1479 /*
1480 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1481 %                                                                             %
1482 %                                                                             %
1483 %                                                                             %
1484 %   G e t I m a g e M a s k                                                   %
1485 %                                                                             %
1486 %                                                                             %
1487 %                                                                             %
1488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1489 %
1490 %  GetImageMask() returns the mask associated with the image.
1491 %
1492 %  The format of the GetImageMask method is:
1493 %
1494 %      Image *GetImageMask(const Image *image,ExceptionInfo *exception)
1495 %
1496 %  A description of each parameter follows:
1497 %
1498 %    o image: the image.
1499 %
1500 */
1501 MagickExport Image *GetImageMask(const Image *image,ExceptionInfo *exception)
1502 {
1503   assert(image != (const Image *) NULL);
1504   if (image->debug != MagickFalse)
1505     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1506   assert(image->signature == MagickSignature);
1507   if (image->mask == (Image *) NULL)
1508     return((Image *) NULL);
1509   return(CloneImage(image->mask,0,0,MagickTrue,exception));
1510 }
1511 \f
1512 /*
1513 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1514 %                                                                             %
1515 %                                                                             %
1516 %                                                                             %
1517 +   G e t I m a g e R e f e r e n c e C o u n t                               %
1518 %                                                                             %
1519 %                                                                             %
1520 %                                                                             %
1521 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1522 %
1523 %  GetImageReferenceCount() returns the image reference count.
1524 %
1525 %  The format of the GetReferenceCount method is:
1526 %
1527 %      ssize_t GetImageReferenceCount(Image *image)
1528 %
1529 %  A description of each parameter follows:
1530 %
1531 %    o image: the image.
1532 %
1533 */
1534 MagickExport ssize_t GetImageReferenceCount(Image *image)
1535 {
1536   ssize_t
1537     reference_count;
1538
1539   assert(image != (Image *) NULL);
1540   assert(image->signature == MagickSignature);
1541   if (image->debug != MagickFalse)
1542     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1543   LockSemaphoreInfo(image->semaphore);
1544   reference_count=image->reference_count;
1545   UnlockSemaphoreInfo(image->semaphore);
1546   return(reference_count);
1547 }
1548 \f
1549 /*
1550 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1551 %                                                                             %
1552 %                                                                             %
1553 %                                                                             %
1554 %   G e t I m a g e V i r t u a l P i x e l M e t h o d                       %
1555 %                                                                             %
1556 %                                                                             %
1557 %                                                                             %
1558 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1559 %
1560 %  GetImageVirtualPixelMethod() gets the "virtual pixels" method for the
1561 %  image.  A virtual pixel is any pixel access that is outside the boundaries
1562 %  of the image cache.
1563 %
1564 %  The format of the GetImageVirtualPixelMethod() method is:
1565 %
1566 %      VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1567 %
1568 %  A description of each parameter follows:
1569 %
1570 %    o image: the image.
1571 %
1572 */
1573 MagickExport VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1574 {
1575   assert(image != (Image *) NULL);
1576   assert(image->signature == MagickSignature);
1577   if (image->debug != MagickFalse)
1578     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1579   return(GetPixelCacheVirtualMethod(image));
1580 }
1581 \f
1582 /*
1583 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1584 %                                                                             %
1585 %                                                                             %
1586 %                                                                             %
1587 %  I n t e r p r e t I m a g e F i l e n a m e                                %
1588 %                                                                             %
1589 %                                                                             %
1590 %                                                                             %
1591 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1592 %
1593 %  InterpretImageFilename() interprets embedded characters in an image filename.
1594 %  The filename length is returned.
1595 %
1596 %  The format of the InterpretImageFilename method is:
1597 %
1598 %      size_t InterpretImageFilename(const ImageInfo *image_info,
1599 %        Image *image,const char *format,int value,char *filename,
1600 %        ExceptionInfo *exception)
1601 %
1602 %  A description of each parameter follows.
1603 %
1604 %    o image_info: the image info..
1605 %
1606 %    o image: the image.
1607 %
1608 %    o format:  A filename describing the format to use to write the numeric
1609 %      argument. Only the first numeric format identifier is replaced.
1610 %
1611 %    o value:  Numeric value to substitute into format filename.
1612 %
1613 %    o filename:  return the formatted filename in this character buffer.
1614 %
1615 %    o exception: return any errors or warnings in this structure.
1616 %
1617 */
1618 MagickExport size_t InterpretImageFilename(const ImageInfo *image_info,
1619   Image *image,const char *format,int value,char *filename,
1620   ExceptionInfo *exception)
1621 {
1622   char
1623     *q;
1624
1625   int
1626     c;
1627
1628   MagickBooleanType
1629     canonical;
1630
1631   register const char
1632     *p;
1633
1634   size_t
1635     length;
1636
1637   canonical=MagickFalse;
1638   length=0;
1639   (void) CopyMagickString(filename,format,MaxTextExtent);
1640   for (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%'))
1641   {
1642     q=(char *) p+1;
1643     if (*q == '%')
1644       {
1645         p=q+1;
1646         continue;
1647       }
1648     if (*q == '0')
1649       {
1650         ssize_t
1651           value;
1652
1653         value=(ssize_t) strtol(q,&q,10);
1654         (void) value;
1655       }
1656     switch (*q)
1657     {
1658       case 'd':
1659       case 'o':
1660       case 'x':
1661       {
1662         q++;
1663         c=(*q);
1664         *q='\0';
1665         (void) FormatLocaleString(filename+(p-format),(size_t) (MaxTextExtent-
1666           (p-format)),p,value);
1667         *q=c;
1668         (void) ConcatenateMagickString(filename,q,MaxTextExtent);
1669         canonical=MagickTrue;
1670         if (*(q-1) != '%')
1671           break;
1672         p++;
1673         break;
1674       }
1675       case '[':
1676       {
1677         char
1678           pattern[MaxTextExtent];
1679
1680         const char
1681           *value;
1682
1683         register char
1684           *r;
1685
1686         register ssize_t
1687           i;
1688
1689         ssize_t
1690           depth;
1691
1692         /*
1693           Image option.
1694         */
1695         if (strchr(p,']') == (char *) NULL)
1696           break;
1697         depth=1;
1698         r=q+1;
1699         for (i=0; (i < (MaxTextExtent-1L)) && (*r != '\0'); i++)
1700         {
1701           if (*r == '[')
1702             depth++;
1703           if (*r == ']')
1704             depth--;
1705           if (depth <= 0)
1706             break;
1707           pattern[i]=(*r++);
1708         }
1709         pattern[i]='\0';
1710         if (LocaleNCompare(pattern,"filename:",9) != 0)
1711           break;
1712         value=(const char *) NULL;
1713         if ((image_info != (const ImageInfo *) NULL) &&
1714             (image != (const Image *) NULL))
1715           value=GetMagickProperty(image_info,image,pattern,exception);
1716         else
1717           if (image != (Image *) NULL)
1718             value=GetImageProperty(image,pattern,exception);
1719           else
1720             if (image_info != (ImageInfo *) NULL)
1721               value=GetImageOption(image_info,pattern);
1722         if (value == (const char *) NULL)
1723           break;
1724         q--;
1725         c=(*q);
1726         *q='\0';
1727         (void) CopyMagickString(filename+(p-format-length),value,(size_t)
1728           (MaxTextExtent-(p-format-length)));
1729         length+=strlen(pattern)-1;
1730         *q=c;
1731         (void) ConcatenateMagickString(filename,r+1,MaxTextExtent);
1732         canonical=MagickTrue;
1733         if (*(q-1) != '%')
1734           break;
1735         p++;
1736         break;
1737       }
1738       default:
1739         break;
1740     }
1741   }
1742   for (q=filename; *q != '\0'; q++)
1743     if ((*q == '%') && (*(q+1) == '%'))
1744       {
1745         (void) CopyMagickString(q,q+1,(size_t) (MaxTextExtent-(q-filename)));
1746         canonical=MagickTrue;
1747       }
1748   if (canonical == MagickFalse)
1749     (void) CopyMagickString(filename,format,MaxTextExtent);
1750   return(strlen(filename));
1751 }
1752 \f
1753 /*
1754 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1755 %                                                                             %
1756 %                                                                             %
1757 %                                                                             %
1758 %   I s H i g h D y n a m i c R a n g e I m a g e                             %
1759 %                                                                             %
1760 %                                                                             %
1761 %                                                                             %
1762 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1763 %
1764 %  IsHighDynamicRangeImage() returns MagickTrue if any pixel component is
1765 %  non-integer or exceeds the bounds of the quantum depth (e.g. for Q16
1766 %  0..65535.
1767 %
1768 %  The format of the IsHighDynamicRangeImage method is:
1769 %
1770 %      MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1771 %        ExceptionInfo *exception)
1772 %
1773 %  A description of each parameter follows:
1774 %
1775 %    o image: the image.
1776 %
1777 %    o exception: return any errors or warnings in this structure.
1778 %
1779 */
1780 MagickExport MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1781   ExceptionInfo *exception)
1782 {
1783 #if !defined(MAGICKCORE_HDRI_SUPPORT)
1784   (void) image;
1785   (void) exception;
1786   return(MagickFalse);
1787 #else
1788   CacheView
1789     *image_view;
1790
1791   MagickBooleanType
1792     status;
1793
1794   ssize_t
1795     y;
1796
1797   assert(image != (Image *) NULL);
1798   assert(image->signature == MagickSignature);
1799   if (image->debug != MagickFalse)
1800     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1801   status=MagickTrue;
1802   image_view=AcquireCacheView(image);
1803 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1804   #pragma omp parallel for schedule(dynamic,4) shared(status)
1805 #endif
1806   for (y=0; y < (ssize_t) image->rows; y++)
1807   {
1808     PixelInfo
1809       pixel;
1810
1811     register const Quantum
1812       *p;
1813
1814     register ssize_t
1815       x;
1816
1817     if (status == MagickFalse)
1818       continue;
1819     p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1820     if (p == (const Quantum *) NULL)
1821       {
1822         status=MagickFalse;
1823         continue;
1824       }
1825     pixel=zero;
1826     for (x=0; x < (ssize_t) image->columns; x++)
1827     {
1828       PixelTrait
1829         traits;
1830
1831       register ssize_t
1832         i;
1833
1834       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1835       {
1836         MagickRealType
1837           pixel;
1838
1839         traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
1840         if (traits == UndefinedPixelTrait)
1841           continue;
1842         pixel=(MagickRealType) p[i];
1843         if ((pixel < 0.0) || (pixel > QuantumRange) ||
1844             (pixel != (QuantumAny) pixel))
1845           break;
1846       }
1847       p+=GetPixelChannels(image);
1848       if (i < (ssize_t) GetPixelChannels(image))
1849         status=MagickFalse;
1850     }
1851     if (x < (ssize_t) image->columns)
1852       status=MagickFalse;
1853   }
1854   image_view=DestroyCacheView(image_view);
1855   return(status != MagickFalse ? MagickFalse : MagickTrue);
1856 #endif
1857 }
1858 \f
1859 /*
1860 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1861 %                                                                             %
1862 %                                                                             %
1863 %                                                                             %
1864 %     I s I m a g e O b j e c t                                               %
1865 %                                                                             %
1866 %                                                                             %
1867 %                                                                             %
1868 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1869 %
1870 %  IsImageObject() returns MagickTrue if the image sequence contains a valid
1871 %  set of image objects.
1872 %
1873 %  The format of the IsImageObject method is:
1874 %
1875 %      MagickBooleanType IsImageObject(const Image *image)
1876 %
1877 %  A description of each parameter follows:
1878 %
1879 %    o image: the image.
1880 %
1881 */
1882 MagickExport MagickBooleanType IsImageObject(const Image *image)
1883 {
1884   register const Image
1885     *p;
1886
1887   assert(image != (Image *) NULL);
1888   if (image->debug != MagickFalse)
1889     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1890   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1891     if (p->signature != MagickSignature)
1892       return(MagickFalse);
1893   return(MagickTrue);
1894 }
1895 \f
1896 /*
1897 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1898 %                                                                             %
1899 %                                                                             %
1900 %                                                                             %
1901 %     I s T a i n t I m a g e                                                 %
1902 %                                                                             %
1903 %                                                                             %
1904 %                                                                             %
1905 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1906 %
1907 %  IsTaintImage() returns MagickTrue any pixel in the image has been altered
1908 %  since it was first constituted.
1909 %
1910 %  The format of the IsTaintImage method is:
1911 %
1912 %      MagickBooleanType IsTaintImage(const Image *image)
1913 %
1914 %  A description of each parameter follows:
1915 %
1916 %    o image: the image.
1917 %
1918 */
1919 MagickExport MagickBooleanType IsTaintImage(const Image *image)
1920 {
1921   char
1922     magick[MaxTextExtent],
1923     filename[MaxTextExtent];
1924
1925   register const Image
1926     *p;
1927
1928   assert(image != (Image *) NULL);
1929   if (image->debug != MagickFalse)
1930     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1931   assert(image->signature == MagickSignature);
1932   (void) CopyMagickString(magick,image->magick,MaxTextExtent);
1933   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1934   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1935   {
1936     if (p->taint != MagickFalse)
1937       return(MagickTrue);
1938     if (LocaleCompare(p->magick,magick) != 0)
1939       return(MagickTrue);
1940     if (LocaleCompare(p->filename,filename) != 0)
1941       return(MagickTrue);
1942   }
1943   return(MagickFalse);
1944 }
1945 \f
1946 /*
1947 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1948 %                                                                             %
1949 %                                                                             %
1950 %                                                                             %
1951 %   M o d i f y I m a g e                                                     %
1952 %                                                                             %
1953 %                                                                             %
1954 %                                                                             %
1955 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1956 %
1957 %  ModifyImage() ensures that there is only a single reference to the image
1958 %  to be modified, updating the provided image pointer to point to a clone of
1959 %  the original image if necessary.
1960 %
1961 %  The format of the ModifyImage method is:
1962 %
1963 %      MagickBooleanType ModifyImage(Image *image,ExceptionInfo *exception)
1964 %
1965 %  A description of each parameter follows:
1966 %
1967 %    o image: the image.
1968 %
1969 %    o exception: return any errors or warnings in this structure.
1970 %
1971 */
1972 MagickExport MagickBooleanType ModifyImage(Image **image,
1973   ExceptionInfo *exception)
1974 {
1975   Image
1976     *clone_image;
1977
1978   assert(image != (Image **) NULL);
1979   assert(*image != (Image *) NULL);
1980   assert((*image)->signature == MagickSignature);
1981   if ((*image)->debug != MagickFalse)
1982     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1983   if (GetImageReferenceCount(*image) <= 1)
1984     return(MagickTrue);
1985   clone_image=CloneImage(*image,0,0,MagickTrue,exception);
1986   LockSemaphoreInfo((*image)->semaphore);
1987   (*image)->reference_count--;
1988   UnlockSemaphoreInfo((*image)->semaphore);
1989   *image=clone_image;
1990   return(MagickTrue);
1991 }
1992 \f
1993 /*
1994 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1995 %                                                                             %
1996 %                                                                             %
1997 %                                                                             %
1998 %   N e w M a g i c k I m a g e                                               %
1999 %                                                                             %
2000 %                                                                             %
2001 %                                                                             %
2002 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2003 %
2004 %  NewMagickImage() creates a blank image canvas of the specified size and
2005 %  background color.
2006 %
2007 %  The format of the NewMagickImage method is:
2008 %
2009 %      Image *NewMagickImage(const ImageInfo *image_info,
2010 %        const size_t width,const size_t height,const PixelInfo *background,
2011 %        ExceptionInfo *exception)
2012 %
2013 %  A description of each parameter follows:
2014 %
2015 %    o image: the image.
2016 %
2017 %    o width: the image width.
2018 %
2019 %    o height: the image height.
2020 %
2021 %    o background: the image color.
2022 %
2023 %    o exception: return any errors or warnings in this structure.
2024 %
2025 */
2026 MagickExport Image *NewMagickImage(const ImageInfo *image_info,
2027   const size_t width,const size_t height,const PixelInfo *background,
2028   ExceptionInfo *exception)
2029 {
2030   CacheView
2031     *image_view;
2032
2033   Image
2034     *image;
2035
2036   MagickBooleanType
2037     status;
2038
2039   ssize_t
2040     y;
2041
2042   assert(image_info != (const ImageInfo *) NULL);
2043   if (image_info->debug != MagickFalse)
2044     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2045   assert(image_info->signature == MagickSignature);
2046   assert(background != (const PixelInfo *) NULL);
2047   image=AcquireImage(image_info,exception);
2048   image->columns=width;
2049   image->rows=height;
2050   image->colorspace=background->colorspace;
2051   image->matte=background->matte;
2052   image->fuzz=background->fuzz;
2053   image->depth=background->depth;
2054   status=MagickTrue;
2055   image_view=AcquireCacheView(image);
2056 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2057   #pragma omp parallel for schedule(dynamic,4) shared(status)
2058 #endif
2059   for (y=0; y < (ssize_t) image->rows; y++)
2060   {
2061     register Quantum
2062       *restrict q;
2063
2064     register ssize_t
2065       x;
2066
2067     if (status == MagickFalse)
2068       continue;
2069     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2070     if (q == (Quantum *) NULL)
2071       {
2072         status=MagickFalse;
2073         continue;
2074       }
2075     for (x=0; x < (ssize_t) image->columns; x++)
2076     {
2077       SetPixelPixelInfo(image,background,q);
2078       q+=GetPixelChannels(image);
2079     }
2080     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2081       status=MagickFalse;
2082   }
2083   image_view=DestroyCacheView(image_view);
2084   if (status == MagickFalse)
2085     image=DestroyImage(image);
2086   return(image);
2087 }
2088 \f
2089 /*
2090 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2091 %                                                                             %
2092 %                                                                             %
2093 %                                                                             %
2094 %   R e f e r e n c e I m a g e                                               %
2095 %                                                                             %
2096 %                                                                             %
2097 %                                                                             %
2098 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2099 %
2100 %  ReferenceImage() increments the reference count associated with an image
2101 %  returning a pointer to the image.
2102 %
2103 %  The format of the ReferenceImage method is:
2104 %
2105 %      Image *ReferenceImage(Image *image)
2106 %
2107 %  A description of each parameter follows:
2108 %
2109 %    o image: the image.
2110 %
2111 */
2112 MagickExport Image *ReferenceImage(Image *image)
2113 {
2114   assert(image != (Image *) NULL);
2115   if (image->debug != MagickFalse)
2116     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2117   assert(image->signature == MagickSignature);
2118   LockSemaphoreInfo(image->semaphore);
2119   image->reference_count++;
2120   UnlockSemaphoreInfo(image->semaphore);
2121   return(image);
2122 }
2123 \f
2124 /*
2125 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2126 %                                                                             %
2127 %                                                                             %
2128 %                                                                             %
2129 %   R e s e t I m a g e P a g e                                               %
2130 %                                                                             %
2131 %                                                                             %
2132 %                                                                             %
2133 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2134 %
2135 %  ResetImagePage() resets the image page canvas and position.
2136 %
2137 %  The format of the ResetImagePage method is:
2138 %
2139 %      MagickBooleanType ResetImagePage(Image *image,const char *page)
2140 %
2141 %  A description of each parameter follows:
2142 %
2143 %    o image: the image.
2144 %
2145 %    o page: the relative page specification.
2146 %
2147 */
2148 MagickExport MagickBooleanType ResetImagePage(Image *image,const char *page)
2149 {
2150   MagickStatusType
2151     flags;
2152
2153   RectangleInfo
2154     geometry;
2155
2156   assert(image != (Image *) NULL);
2157   assert(image->signature == MagickSignature);
2158   if (image->debug != MagickFalse)
2159     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2160   flags=ParseAbsoluteGeometry(page,&geometry);
2161   if ((flags & WidthValue) != 0)
2162     {
2163       if ((flags & HeightValue) == 0)
2164         geometry.height=geometry.width;
2165       image->page.width=geometry.width;
2166       image->page.height=geometry.height;
2167     }
2168   if ((flags & AspectValue) != 0)
2169     {
2170       if ((flags & XValue) != 0)
2171         image->page.x+=geometry.x;
2172       if ((flags & YValue) != 0)
2173         image->page.y+=geometry.y;
2174     }
2175   else
2176     {
2177       if ((flags & XValue) != 0)
2178         {
2179           image->page.x=geometry.x;
2180           if ((image->page.width == 0) && (geometry.x > 0))
2181             image->page.width=image->columns+geometry.x;
2182         }
2183       if ((flags & YValue) != 0)
2184         {
2185           image->page.y=geometry.y;
2186           if ((image->page.height == 0) && (geometry.y > 0))
2187             image->page.height=image->rows+geometry.y;
2188         }
2189     }
2190   return(MagickTrue);
2191 }
2192 \f
2193 /*
2194 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2195 %                                                                             %
2196 %                                                                             %
2197 %                                                                             %
2198 %     S e p a r a t e I m a g e C h a n n e l                                 %
2199 %                                                                             %
2200 %                                                                             %
2201 %                                                                             %
2202 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2203 %
2204 %  SeparateImage() separates a channel from the image and returns it as
2205 %  a grayscale image.  A channel is a particular color component of each pixel
2206 %  in the image.
2207 %
2208 %  The format of the SeparateImage method is:
2209 %
2210 %      MagickBooleanType SeparateImage(Image *image,ExceptionInfo *exception)
2211 %
2212 %  A description of each parameter follows:
2213 %
2214 %    o image: the image.
2215 %
2216 %    o exception: return any errors or warnings in this structure.
2217 %
2218 */
2219 MagickExport MagickBooleanType SeparateImage(Image *image,
2220   ExceptionInfo *exception)
2221 {
2222 #define SeparateImageTag  "Separate/Image"
2223
2224   CacheView
2225     *image_view;
2226
2227   MagickBooleanType
2228     status;
2229
2230   MagickOffsetType
2231     progress;
2232
2233   ssize_t
2234     y;
2235
2236   assert(image != (Image *) NULL);
2237   assert(image->signature == MagickSignature);
2238   if (image->debug != MagickFalse)
2239     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2240   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2241     return(MagickFalse);
2242   /*
2243     Separate image channels.
2244   */
2245   status=MagickTrue;
2246   progress=0;
2247   image_view=AcquireCacheView(image);
2248 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2249   #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
2250 #endif
2251   for (y=0; y < (ssize_t) image->rows; y++)
2252   {
2253     register Quantum
2254       *restrict q;
2255
2256     register ssize_t
2257       x;
2258
2259     if (status == MagickFalse)
2260       continue;
2261     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2262     if (q == (Quantum *) NULL)
2263       {
2264         status=MagickFalse;
2265         continue;
2266       }
2267     for (x=0; x < (ssize_t) image->columns; x++)
2268     {
2269       register ssize_t
2270         i;
2271
2272       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2273       {
2274         PixelTrait
2275           traits;
2276
2277         register ssize_t
2278           j;
2279
2280         traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
2281         if (traits == UndefinedPixelTrait)
2282           continue;
2283         if ((traits & UpdatePixelTrait) != 0)
2284           for (j=0; j < (ssize_t) GetPixelChannels(image); j++)
2285             q[j]=q[i];
2286       }
2287       q+=GetPixelChannels(image);
2288     }
2289     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2290       status=MagickFalse;
2291     if (image->progress_monitor != (MagickProgressMonitor) NULL)
2292       {
2293         MagickBooleanType
2294           proceed;
2295
2296 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2297         #pragma omp critical (MagickCore_SeparateImage)
2298 #endif
2299         proceed=SetImageProgress(image,SeparateImageTag,progress++,image->rows);
2300         if (proceed == MagickFalse)
2301           status=MagickFalse;
2302       }
2303   }
2304   image_view=DestroyCacheView(image_view);
2305   (void) SetImageColorspace(image,RGBColorspace,exception);
2306   return(status);
2307 }
2308 \f
2309 /*
2310 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2311 %                                                                             %
2312 %                                                                             %
2313 %                                                                             %
2314 %     S e p a r a t e I m a g e s                                             %
2315 %                                                                             %
2316 %                                                                             %
2317 %                                                                             %
2318 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2319 %
2320 %  SeparateImages() returns a separate grayscale image for each channel
2321 %  specified.
2322 %
2323 %  The format of the SeparateImages method is:
2324 %
2325 %      MagickBooleanType SeparateImages(const Image *image,
2326 %        ExceptionInfo *exception)
2327 %
2328 %  A description of each parameter follows:
2329 %
2330 %    o image: the image.
2331 %
2332 %    o exception: return any errors or warnings in this structure.
2333 %
2334 */
2335 MagickExport Image *SeparateImages(const Image *image,ExceptionInfo *exception)
2336 {
2337   ChannelType
2338     channel_mask;
2339
2340   Image
2341     *images,
2342     *separate_image;
2343
2344   register ssize_t
2345     i;
2346
2347   assert(image != (Image *) NULL);
2348   assert(image->signature == MagickSignature);
2349   if (image->debug != MagickFalse)
2350     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2351   images=NewImageList();
2352   for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2353   {
2354     PixelTrait
2355       traits;
2356
2357     traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
2358     if (traits == UndefinedPixelTrait)
2359       continue;
2360     if ((traits & UpdatePixelTrait) != 0)
2361       {
2362         separate_image=CloneImage(image,0,0,MagickTrue,exception);
2363         if (separate_image != (Image *) NULL)
2364           {
2365             channel_mask=SetPixelChannelMask(separate_image,
2366               (ChannelType) (1 << i));
2367             (void) SeparateImage(separate_image,exception);
2368             (void) SetPixelChannelMap(separate_image,channel_mask);
2369             AppendImageToList(&images,separate_image);
2370           }
2371       }
2372   }
2373   return(images);
2374 }
2375 \f
2376 /*
2377 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2378 %                                                                             %
2379 %                                                                             %
2380 %                                                                             %
2381 %   S e t I m a g e A l p h a C h a n n e l                                   %
2382 %                                                                             %
2383 %                                                                             %
2384 %                                                                             %
2385 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2386 %
2387 %  SetImageAlphaChannel() activates, deactivates, resets, or sets the alpha
2388 %  channel.
2389 %
2390 %  The format of the SetImageAlphaChannel method is:
2391 %
2392 %      MagickBooleanType SetImageAlphaChannel(Image *image,
2393 %        const AlphaChannelType alpha_type,ExceptionInfo *exception)
2394 %
2395 %  A description of each parameter follows:
2396 %
2397 %    o image: the image.
2398 %
2399 %    o alpha_type:  The alpha channel type: ActivateAlphaChannel,
2400 %      CopyAlphaChannel, DeactivateAlphaChannel, ExtractAlphaChannel,
2401 %      OpaqueAlphaChannel, SetAlphaChannel, ShapeAlphaChannel, and
2402 %      TransparentAlphaChannel.
2403 %
2404 %    o exception: return any errors or warnings in this structure.
2405 %
2406 */
2407 MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
2408   const AlphaChannelType alpha_type,ExceptionInfo *exception)
2409 {
2410   ChannelType
2411     channel_mask;
2412
2413   MagickBooleanType
2414     status;
2415
2416   assert(image != (Image *) NULL);
2417   if (image->debug != MagickFalse)
2418     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2419   assert(image->signature == MagickSignature);
2420   status=MagickTrue;
2421   switch (alpha_type)
2422   {
2423     case ActivateAlphaChannel:
2424     {
2425       image->matte=MagickTrue;
2426       break;
2427     }
2428     case BackgroundAlphaChannel:
2429     {
2430       CacheView
2431         *image_view;
2432
2433       PixelInfo
2434         background;
2435
2436       ssize_t
2437         y;
2438
2439       /*
2440         Set transparent pixels to background color.
2441       */
2442       if (image->matte == MagickFalse)
2443         break;
2444       if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2445         break;
2446       background=image->background_color;
2447       image_view=AcquireCacheView(image);
2448 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2449       #pragma omp parallel for schedule(dynamic,4) shared(status)
2450 #endif
2451       for (y=0; y < (ssize_t) image->rows; y++)
2452       {
2453         register Quantum
2454           *restrict q;
2455
2456         register ssize_t
2457           x;
2458
2459         if (status == MagickFalse)
2460           continue;
2461         q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
2462           exception);
2463         if (q == (Quantum *) NULL)
2464           {
2465             status=MagickFalse;
2466             continue;
2467           }
2468         for (x=0; x < (ssize_t) image->columns; x++)
2469         {
2470           if (GetPixelAlpha(image,q) == TransparentAlpha)
2471             SetPixelPixelInfo(image,&background,q);
2472           q+=GetPixelChannels(image);
2473         }
2474         if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2475           status=MagickFalse;
2476       }
2477       image_view=DestroyCacheView(image_view);
2478       return(status);
2479     }
2480     case DeactivateAlphaChannel:
2481     {
2482       image->matte=MagickFalse;
2483       break;
2484     }
2485     case ShapeAlphaChannel:
2486     case CopyAlphaChannel:
2487     {
2488       /*
2489         Special usage case for SeparateImage(): copy grayscale color to
2490         the alpha channel.
2491       */
2492       channel_mask=SetPixelChannelMask(image,GrayChannel);
2493       status=SeparateImage(image,exception);
2494       (void) SetPixelChannelMask(image,channel_mask);
2495       image->matte=MagickTrue; /* make sure transparency is now on! */
2496       if (alpha_type == ShapeAlphaChannel)
2497         {
2498           PixelInfo
2499             background;
2500
2501           /*
2502             Reset all color channels to background color.
2503           */
2504           background=image->background_color;
2505           (void) LevelImageColors(image,&background,&background,MagickTrue,
2506             exception);
2507         }
2508       break;
2509     }
2510     case ExtractAlphaChannel:
2511     {
2512       channel_mask=SetPixelChannelMask(image,AlphaChannel);
2513       status=SeparateImage(image,exception);
2514       (void) SetPixelChannelMask(image,channel_mask);
2515       image->matte=MagickFalse;
2516       break;
2517     }
2518     case OpaqueAlphaChannel:
2519     {
2520       status=SetImageAlpha(image,OpaqueAlpha,exception);
2521       image->matte=MagickTrue;
2522       break;
2523     }
2524     case TransparentAlphaChannel:
2525     {
2526       status=SetImageAlpha(image,TransparentAlpha,exception);
2527       image->matte=MagickTrue;
2528       break;
2529     }
2530     case SetAlphaChannel:
2531     {
2532       if (image->matte == MagickFalse)
2533         {
2534           status=SetImageAlpha(image,OpaqueAlpha,exception);
2535           image->matte=MagickTrue;
2536         }
2537       break;
2538     }
2539     case UndefinedAlphaChannel:
2540       break;
2541   }
2542   if (status == MagickFalse)
2543     return(status);
2544   return(SyncImagePixelCache(image,exception));
2545 }
2546 \f
2547 /*
2548 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2549 %                                                                             %
2550 %                                                                             %
2551 %                                                                             %
2552 %   S e t I m a g e B a c k g r o u n d C o l o r                             %
2553 %                                                                             %
2554 %                                                                             %
2555 %                                                                             %
2556 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2557 %
2558 %  SetImageBackgroundColor() initializes the image pixels to the image
2559 %  background color.  The background color is defined by the background_color
2560 %  member of the image structure.
2561 %
2562 %  The format of the SetImage method is:
2563 %
2564 %      MagickBooleanType SetImageBackgroundColor(Image *image,
2565 %        ExceptionInfo *exception)
2566 %
2567 %  A description of each parameter follows:
2568 %
2569 %    o image: the image.
2570 %
2571 %    o exception: return any errors or warnings in this structure.
2572 %
2573 */
2574 MagickExport MagickBooleanType SetImageBackgroundColor(Image *image,
2575   ExceptionInfo *exception)
2576 {
2577   CacheView
2578     *image_view;
2579
2580   MagickBooleanType
2581     status;
2582
2583   PixelInfo
2584     background;
2585
2586   ssize_t
2587     y;
2588
2589   assert(image != (Image *) NULL);
2590   if (image->debug != MagickFalse)
2591     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2592   assert(image->signature == MagickSignature);
2593   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2594     return(MagickFalse);
2595   if (image->background_color.alpha != OpaqueAlpha)
2596     image->matte=MagickTrue;
2597   GetPixelInfo(image,&background);
2598   background=image->background_color;
2599   /*
2600     Set image background color.
2601   */
2602   status=MagickTrue;
2603   image_view=AcquireCacheView(image);
2604   for (y=0; y < (ssize_t) image->rows; y++)
2605   {
2606     register Quantum
2607       *restrict q;
2608
2609     register ssize_t
2610       x;
2611
2612     if (status == MagickFalse)
2613       continue;
2614     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2615     if (q == (Quantum *) NULL)
2616       {
2617         status=MagickFalse;
2618         continue;
2619       }
2620     for (x=0; x < (ssize_t) image->columns; x++)
2621     {
2622       SetPixelPixelInfo(image,&background,q);
2623       q+=GetPixelChannels(image);
2624     }
2625     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2626       status=MagickFalse;
2627   }
2628   image_view=DestroyCacheView(image_view);
2629   return(status);
2630 }
2631 \f
2632 /*
2633 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2634 %                                                                             %
2635 %                                                                             %
2636 %                                                                             %
2637 %   S e t I m a g e C o l o r                                                 %
2638 %                                                                             %
2639 %                                                                             %
2640 %                                                                             %
2641 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2642 %
2643 %  SetImageColor() set the entire image canvas to the specified color.
2644 %
2645 %  The format of the SetImageColor method is:
2646 %
2647 %      MagickBooleanType SetImageColor(Image *image,const PixelInfo *color,
2648 %        ExeptionInfo *exception)
2649 %
2650 %  A description of each parameter follows:
2651 %
2652 %    o image: the image.
2653 %
2654 %    o background: the image color.
2655 %
2656 %    o exception: return any errors or warnings in this structure.
2657 %
2658 */
2659 MagickExport MagickBooleanType SetImageColor(Image *image,
2660   const PixelInfo *color,ExceptionInfo *exception)
2661 {
2662   CacheView
2663     *image_view;
2664
2665   MagickBooleanType
2666     status;
2667
2668   ssize_t
2669     y;
2670
2671   assert(image != (Image *) NULL);
2672   if (image->debug != MagickFalse)
2673     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2674   assert(image->signature == MagickSignature);
2675   assert(color != (const PixelInfo *) NULL);
2676   image->colorspace=color->colorspace;
2677   image->matte=color->matte;
2678   image->fuzz=color->fuzz;
2679   image->depth=color->depth;
2680   status=MagickTrue;
2681   image_view=AcquireCacheView(image);
2682 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2683   #pragma omp parallel for schedule(dynamic,4) shared(status)
2684 #endif
2685   for (y=0; y < (ssize_t) image->rows; y++)
2686   {
2687     register Quantum
2688       *restrict q;
2689
2690     register ssize_t
2691       x;
2692
2693     if (status == MagickFalse)
2694       continue;
2695     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2696     if (q == (Quantum *) NULL)
2697       {
2698         status=MagickFalse;
2699         continue;
2700       }
2701     for (x=0; x < (ssize_t) image->columns; x++)
2702     {
2703       SetPixelPixelInfo(image,color,q);
2704       q+=GetPixelChannels(image);
2705     }
2706     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2707       status=MagickFalse;
2708   }
2709   image_view=DestroyCacheView(image_view);
2710   return(status);
2711 }
2712 \f
2713 /*
2714 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2715 %                                                                             %
2716 %                                                                             %
2717 %                                                                             %
2718 %   S e t I m a g e S t o r a g e C l a s s                                   %
2719 %                                                                             %
2720 %                                                                             %
2721 %                                                                             %
2722 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2723 %
2724 %  SetImageStorageClass() sets the image class: DirectClass for true color
2725 %  images or PseudoClass for colormapped images.
2726 %
2727 %  The format of the SetImageStorageClass method is:
2728 %
2729 %      MagickBooleanType SetImageStorageClass(Image *image,
2730 %        const ClassType storage_class,ExceptionInfo *exception)
2731 %
2732 %  A description of each parameter follows:
2733 %
2734 %    o image: the image.
2735 %
2736 %    o storage_class:  The image class.
2737 %
2738 %    o exception: return any errors or warnings in this structure.
2739 %
2740 */
2741 MagickExport MagickBooleanType SetImageStorageClass(Image *image,
2742   const ClassType storage_class,ExceptionInfo *exception)
2743 {
2744   image->storage_class=storage_class;
2745   return(SyncImagePixelCache(image,exception));
2746 }
2747 \f
2748 /*
2749 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2750 %                                                                             %
2751 %                                                                             %
2752 %                                                                             %
2753 %   S e t I m a g e C l i p M a s k                                           %
2754 %                                                                             %
2755 %                                                                             %
2756 %                                                                             %
2757 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2758 %
2759 %  SetImageClipMask() associates a clip path with the image.  The clip path
2760 %  must be the same dimensions as the image.  Set any pixel component of
2761 %  the clip path to TransparentAlpha to prevent that corresponding image
2762 %  pixel component from being updated when SyncAuthenticPixels() is applied.
2763 %
2764 %  The format of the SetImageClipMask method is:
2765 %
2766 %      MagickBooleanType SetImageClipMask(Image *image,const Image *clip_mask,
2767 %        ExceptionInfo *exception)
2768 %
2769 %  A description of each parameter follows:
2770 %
2771 %    o image: the image.
2772 %
2773 %    o clip_mask: the image clip path.
2774 %
2775 %    o exception: return any errors or warnings in this structure.
2776 %
2777 */
2778 MagickExport MagickBooleanType SetImageClipMask(Image *image,
2779   const Image *clip_mask,ExceptionInfo *exception)
2780 {
2781   assert(image != (Image *) NULL);
2782   if (image->debug != MagickFalse)
2783     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2784   assert(image->signature == MagickSignature);
2785   if (clip_mask != (const Image *) NULL)
2786     if ((clip_mask->columns != image->columns) ||
2787         (clip_mask->rows != image->rows))
2788       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
2789   if (image->clip_mask != (Image *) NULL)
2790     image->clip_mask=DestroyImage(image->clip_mask);
2791   image->clip_mask=NewImageList();
2792   if (clip_mask == (Image *) NULL)
2793     return(MagickTrue);
2794   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2795     return(MagickFalse);
2796   image->clip_mask=CloneImage(clip_mask,0,0,MagickTrue,exception);
2797   if (image->clip_mask == (Image *) NULL)
2798     return(MagickFalse);
2799   return(MagickTrue);
2800 }
2801 \f
2802 /*
2803 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2804 %                                                                             %
2805 %                                                                             %
2806 %                                                                             %
2807 %   S e t I m a g e E x t e n t                                               %
2808 %                                                                             %
2809 %                                                                             %
2810 %                                                                             %
2811 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2812 %
2813 %  SetImageExtent() sets the image size (i.e. columns & rows).
2814 %
2815 %  The format of the SetImageExtent method is:
2816 %
2817 %      MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2818 %        const size_t rows,ExceptionInfo *exception)
2819 %
2820 %  A description of each parameter follows:
2821 %
2822 %    o image: the image.
2823 %
2824 %    o columns:  The image width in pixels.
2825 %
2826 %    o rows:  The image height in pixels.
2827 %
2828 %    o exception: return any errors or warnings in this structure.
2829 %
2830 */
2831 MagickExport MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2832   const size_t rows,ExceptionInfo *exception)
2833 {
2834   if ((columns == 0) || (rows == 0))
2835     return(MagickFalse);
2836   image->columns=columns;
2837   image->rows=rows;
2838   return(SyncImagePixelCache(image,exception));
2839 }
2840 \f
2841 /*
2842 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2843 %                                                                             %
2844 %                                                                             %
2845 %                                                                             %
2846 +   S e t I m a g e I n f o                                                   %
2847 %                                                                             %
2848 %                                                                             %
2849 %                                                                             %
2850 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2851 %
2852 %  SetImageInfo() initializes the `magick' field of the ImageInfo structure.
2853 %  It is set to a type of image format based on the prefix or suffix of the
2854 %  filename.  For example, `ps:image' returns PS indicating a Postscript image.
2855 %  JPEG is returned for this filename: `image.jpg'.  The filename prefix has
2856 %  precendence over the suffix.  Use an optional index enclosed in brackets
2857 %  after a file name to specify a desired scene of a multi-resolution image
2858 %  format like Photo CD (e.g. img0001.pcd[4]).  A True (non-zero) return value
2859 %  indicates success.
2860 %
2861 %  The format of the SetImageInfo method is:
2862 %
2863 %      MagickBooleanType SetImageInfo(ImageInfo *image_info,
2864 %        const unsigned int frames,ExceptionInfo *exception)
2865 %
2866 %  A description of each parameter follows:
2867 %
2868 %    o image_info: the image info.
2869 %
2870 %    o frames: the number of images you intend to write.
2871 %
2872 %    o exception: return any errors or warnings in this structure.
2873 %
2874 */
2875 MagickExport MagickBooleanType SetImageInfo(ImageInfo *image_info,
2876   const unsigned int frames,ExceptionInfo *exception)
2877 {
2878   char
2879     extension[MaxTextExtent],
2880     filename[MaxTextExtent],
2881     magic[MaxTextExtent],
2882     *q,
2883     subimage[MaxTextExtent];
2884
2885   const MagicInfo
2886     *magic_info;
2887
2888   const MagickInfo
2889     *magick_info;
2890
2891   ExceptionInfo
2892     *sans_exception;
2893
2894   Image
2895     *image;
2896
2897   MagickBooleanType
2898     status;
2899
2900   register const char
2901     *p;
2902
2903   ssize_t
2904     count;
2905
2906   unsigned char
2907     magick[2*MaxTextExtent];
2908
2909   /*
2910     Look for 'image.format' in filename.
2911   */
2912   assert(image_info != (ImageInfo *) NULL);
2913   assert(image_info->signature == MagickSignature);
2914   if (image_info->debug != MagickFalse)
2915     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2916       image_info->filename);
2917   *subimage='\0';
2918   if (frames == 0)
2919     {
2920       GetPathComponent(image_info->filename,SubimagePath,subimage);
2921       if (*subimage != '\0')
2922         {
2923           /*
2924             Look for scene specification (e.g. img0001.pcd[4]).
2925           */
2926           if (IsSceneGeometry(subimage,MagickFalse) == MagickFalse)
2927             {
2928               if (IsGeometry(subimage) != MagickFalse)
2929                 (void) CloneString(&image_info->extract,subimage);
2930             }
2931           else
2932             {
2933               size_t
2934                 first,
2935                 last;
2936
2937               (void) CloneString(&image_info->scenes,subimage);
2938               image_info->scene=StringToUnsignedLong(image_info->scenes);
2939               image_info->number_scenes=image_info->scene;
2940               p=image_info->scenes;
2941               for (q=(char *) image_info->scenes; *q != '\0'; p++)
2942               {
2943                 while ((isspace((int) ((unsigned char) *p)) != 0) ||
2944                        (*p == ','))
2945                   p++;
2946                 first=(size_t) strtol(p,&q,10);
2947                 last=first;
2948                 while (isspace((int) ((unsigned char) *q)) != 0)
2949                   q++;
2950                 if (*q == '-')
2951                   last=(size_t) strtol(q+1,&q,10);
2952                 if (first > last)
2953                   Swap(first,last);
2954                 if (first < image_info->scene)
2955                   image_info->scene=first;
2956                 if (last > image_info->number_scenes)
2957                   image_info->number_scenes=last;
2958                 p=q;
2959               }
2960               image_info->number_scenes-=image_info->scene-1;
2961             }
2962         }
2963     }
2964   *extension='\0';
2965   GetPathComponent(image_info->filename,ExtensionPath,extension);
2966 #if defined(MAGICKCORE_ZLIB_DELEGATE)
2967   if (*extension != '\0')
2968     if ((LocaleCompare(extension,"gz") == 0) ||
2969         (LocaleCompare(extension,"Z") == 0) ||
2970         (LocaleCompare(extension,"wmz") == 0))
2971       {
2972         char
2973           path[MaxTextExtent];
2974
2975         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2976         path[strlen(path)-strlen(extension)-1]='\0';
2977         GetPathComponent(path,ExtensionPath,extension);
2978       }
2979 #endif
2980 #if defined(MAGICKCORE_BZLIB_DELEGATE)
2981   if (*extension != '\0')
2982     if (LocaleCompare(extension,"bz2") == 0)
2983       {
2984         char
2985           path[MaxTextExtent];
2986
2987         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2988         path[strlen(path)-strlen(extension)-1]='\0';
2989         GetPathComponent(path,ExtensionPath,extension);
2990       }
2991 #endif
2992   image_info->affirm=MagickFalse;
2993   sans_exception=AcquireExceptionInfo();
2994   if (*extension != '\0')
2995     {
2996       MagickFormatType
2997         format_type;
2998
2999       register ssize_t
3000         i;
3001
3002       static const char
3003         *format_type_formats[] =
3004         {
3005           "AUTOTRACE",
3006           "BROWSE",
3007           "DCRAW",
3008           "EDIT",
3009           "EPHEMERAL",
3010           "LAUNCH",
3011           "MPEG:DECODE",
3012           "MPEG:ENCODE",
3013           "PRINT",
3014           "PS:ALPHA",
3015           "PS:CMYK",
3016           "PS:COLOR",
3017           "PS:GRAY",
3018           "PS:MONO",
3019           "SCAN",
3020           "SHOW",
3021           "WIN",
3022           (char *) NULL
3023         };
3024
3025       /*
3026         User specified image format.
3027       */
3028       (void) CopyMagickString(magic,extension,MaxTextExtent);
3029       LocaleUpper(magic);
3030       /*
3031         Look for explicit image formats.
3032       */
3033       format_type=UndefinedFormatType;
3034       i=0;
3035       while ((format_type == UndefinedFormatType) &&
3036              (format_type_formats[i] != (char *) NULL))
3037       {
3038         if ((*magic == *format_type_formats[i]) &&
3039             (LocaleCompare(magic,format_type_formats[i]) == 0))
3040           format_type=ExplicitFormatType;
3041         i++;
3042       }
3043       magick_info=GetMagickInfo(magic,sans_exception);
3044       if ((magick_info != (const MagickInfo *) NULL) &&
3045           (magick_info->format_type != UndefinedFormatType))
3046         format_type=magick_info->format_type;
3047       if (format_type == UndefinedFormatType)
3048         (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3049       else
3050         if (format_type == ExplicitFormatType)
3051           {
3052             image_info->affirm=MagickTrue;
3053             (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3054           }
3055       if (LocaleCompare(magic,"RGB") == 0)
3056         image_info->affirm=MagickFalse;  /* maybe SGI disguised as RGB */
3057     }
3058   /*
3059     Look for explicit 'format:image' in filename.
3060   */
3061   *magic='\0';
3062   GetPathComponent(image_info->filename,MagickPath,magic);
3063   if (*magic == '\0')
3064     (void) CopyMagickString(magic,image_info->magick,MaxTextExtent);
3065   else
3066     {
3067       /*
3068         User specified image format.
3069       */
3070       LocaleUpper(magic);
3071       if (IsMagickConflict(magic) == MagickFalse)
3072         {
3073           (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3074           if (LocaleCompare(magic,"EPHEMERAL") != 0)
3075             image_info->affirm=MagickTrue;
3076           else
3077             image_info->temporary=MagickTrue;
3078         }
3079     }
3080   magick_info=GetMagickInfo(magic,sans_exception);
3081   sans_exception=DestroyExceptionInfo(sans_exception);
3082   if ((magick_info == (const MagickInfo *) NULL) ||
3083       (GetMagickEndianSupport(magick_info) == MagickFalse))
3084     image_info->endian=UndefinedEndian;
3085   GetPathComponent(image_info->filename,CanonicalPath,filename);
3086   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3087   if ((image_info->adjoin != MagickFalse) && (frames > 1))
3088     {
3089       /*
3090         Test for multiple image support (e.g. image%02d.png).
3091       */
3092       (void) InterpretImageFilename(image_info,(Image *) NULL,
3093         image_info->filename,(int) image_info->scene,filename,exception);
3094       if ((LocaleCompare(filename,image_info->filename) != 0) &&
3095           (strchr(filename,'%') == (char *) NULL))
3096         image_info->adjoin=MagickFalse;
3097     }
3098   if ((image_info->adjoin != MagickFalse) && (frames > 0))
3099     {
3100       /*
3101         Some image formats do not support multiple frames per file.
3102       */
3103       magick_info=GetMagickInfo(magic,exception);
3104       if (magick_info != (const MagickInfo *) NULL)
3105         if (GetMagickAdjoin(magick_info) == MagickFalse)
3106           image_info->adjoin=MagickFalse;
3107     }
3108   if (image_info->affirm != MagickFalse)
3109     return(MagickTrue);
3110   if (frames == 0)
3111     {
3112       /*
3113         Determine the image format from the first few bytes of the file.
3114       */
3115       image=AcquireImage(image_info,exception);
3116       (void) CopyMagickString(image->filename,image_info->filename,
3117         MaxTextExtent);
3118       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3119       if (status == MagickFalse)
3120         {
3121           image=DestroyImage(image);
3122           return(MagickFalse);
3123         }
3124       if ((IsBlobSeekable(image) == MagickFalse) ||
3125           (IsBlobExempt(image) != MagickFalse))
3126         {
3127           /*
3128             Copy standard input or pipe to temporary file.
3129           */
3130           *filename='\0';
3131           status=ImageToFile(image,filename,exception);
3132           (void) CloseBlob(image);
3133           if (status == MagickFalse)
3134             {
3135               image=DestroyImage(image);
3136               return(MagickFalse);
3137             }
3138           SetImageInfoFile(image_info,(FILE *) NULL);
3139           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
3140           status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3141           if (status == MagickFalse)
3142             {
3143               image=DestroyImage(image);
3144               return(MagickFalse);
3145             }
3146           (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3147           image_info->temporary=MagickTrue;
3148         }
3149       (void) ResetMagickMemory(magick,0,sizeof(magick));
3150       count=ReadBlob(image,2*MaxTextExtent,magick);
3151       (void) CloseBlob(image);
3152       image=DestroyImage(image);
3153       /*
3154         Check magic.xml configuration file.
3155       */
3156       sans_exception=AcquireExceptionInfo();
3157       magic_info=GetMagicInfo(magick,(size_t) count,sans_exception);
3158       if ((magic_info != (const MagicInfo *) NULL) &&
3159           (GetMagicName(magic_info) != (char *) NULL))
3160         {
3161           (void) CopyMagickString(image_info->magick,GetMagicName(magic_info),
3162             MaxTextExtent);
3163           magick_info=GetMagickInfo(image_info->magick,sans_exception);
3164           if ((magick_info == (const MagickInfo *) NULL) ||
3165               (GetMagickEndianSupport(magick_info) == MagickFalse))
3166             image_info->endian=UndefinedEndian;
3167           sans_exception=DestroyExceptionInfo(sans_exception);
3168           return(MagickTrue);
3169         }
3170       magick_info=GetMagickInfo(image_info->magick,sans_exception);
3171       if ((magick_info == (const MagickInfo *) NULL) ||
3172           (GetMagickEndianSupport(magick_info) == MagickFalse))
3173         image_info->endian=UndefinedEndian;
3174       sans_exception=DestroyExceptionInfo(sans_exception);
3175     }
3176   return(MagickTrue);
3177 }
3178 \f
3179 /*
3180 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3181 %                                                                             %
3182 %                                                                             %
3183 %                                                                             %
3184 %   S e t I m a g e I n f o B l o b                                           %
3185 %                                                                             %
3186 %                                                                             %
3187 %                                                                             %
3188 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3189 %
3190 %  SetImageInfoBlob() sets the image info blob member.
3191 %
3192 %  The format of the SetImageInfoBlob method is:
3193 %
3194 %      void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3195 %        const size_t length)
3196 %
3197 %  A description of each parameter follows:
3198 %
3199 %    o image_info: the image info.
3200 %
3201 %    o blob: the blob.
3202 %
3203 %    o length: the blob length.
3204 %
3205 */
3206 MagickExport void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3207   const size_t length)
3208 {
3209   assert(image_info != (ImageInfo *) NULL);
3210   assert(image_info->signature == MagickSignature);
3211   if (image_info->debug != MagickFalse)
3212     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3213       image_info->filename);
3214   image_info->blob=(void *) blob;
3215   image_info->length=length;
3216 }
3217 \f
3218 /*
3219 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3220 %                                                                             %
3221 %                                                                             %
3222 %                                                                             %
3223 %   S e t I m a g e I n f o F i l e                                           %
3224 %                                                                             %
3225 %                                                                             %
3226 %                                                                             %
3227 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3228 %
3229 %  SetImageInfoFile() sets the image info file member.
3230 %
3231 %  The format of the SetImageInfoFile method is:
3232 %
3233 %      void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3234 %
3235 %  A description of each parameter follows:
3236 %
3237 %    o image_info: the image info.
3238 %
3239 %    o file: the file.
3240 %
3241 */
3242 MagickExport void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3243 {
3244   assert(image_info != (ImageInfo *) NULL);
3245   assert(image_info->signature == MagickSignature);
3246   if (image_info->debug != MagickFalse)
3247     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3248       image_info->filename);
3249   image_info->file=file;
3250 }
3251 \f
3252 /*
3253 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3254 %                                                                             %
3255 %                                                                             %
3256 %                                                                             %
3257 %   S e t I m a g e M a s k                                                   %
3258 %                                                                             %
3259 %                                                                             %
3260 %                                                                             %
3261 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3262 %
3263 %  SetImageMask() associates a mask with the image.  The mask must be the same
3264 %  dimensions as the image.
3265 %
3266 %  The format of the SetImageMask method is:
3267 %
3268 %      MagickBooleanType SetImageMask(Image *image,const Image *mask,
3269 %        ExceptionInfo *exception)
3270 %
3271 %  A description of each parameter follows:
3272 %
3273 %    o image: the image.
3274 %
3275 %    o mask: the image mask.
3276 %
3277 %    o exception: return any errors or warnings in this structure.
3278 %
3279 */
3280 MagickExport MagickBooleanType SetImageMask(Image *image,
3281   const Image *mask,ExceptionInfo *exception)
3282 {
3283   assert(image != (Image *) NULL);
3284   if (image->debug != MagickFalse)
3285     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3286   assert(image->signature == MagickSignature);
3287   if (mask != (const Image *) NULL)
3288     if ((mask->columns != image->columns) || (mask->rows != image->rows))
3289       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
3290   if (image->mask != (Image *) NULL)
3291     image->mask=DestroyImage(image->mask);
3292   image->mask=NewImageList();
3293   if (mask == (Image *) NULL)
3294     return(MagickTrue);
3295   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
3296     return(MagickFalse);
3297   image->mask=CloneImage(mask,0,0,MagickTrue,exception);
3298   if (image->mask == (Image *) NULL)
3299     return(MagickFalse);
3300   return(MagickTrue);
3301 }
3302 \f
3303 /*
3304 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3305 %                                                                             %
3306 %                                                                             %
3307 %                                                                             %
3308 %     S e t I m a g e A l p h a                                               %
3309 %                                                                             %
3310 %                                                                             %
3311 %                                                                             %
3312 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3313 %
3314 %  SetImageAlpha() sets the alpha levels of the image.
3315 %
3316 %  The format of the SetImageAlpha method is:
3317 %
3318 %      MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3319 %        ExceptionInfo *exception)
3320 %
3321 %  A description of each parameter follows:
3322 %
3323 %    o image: the image.
3324 %
3325 %    o Alpha: the level of transparency: 0 is fully opaque and QuantumRange is
3326 %      fully transparent.
3327 %
3328 */
3329 MagickExport MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3330   ExceptionInfo *exception)
3331 {
3332   CacheView
3333     *image_view;
3334
3335   MagickBooleanType
3336     status;
3337
3338   ssize_t
3339     y;
3340
3341   assert(image != (Image *) NULL);
3342   if (image->debug != MagickFalse)
3343     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3344   assert(image->signature == MagickSignature);
3345   image->matte=alpha != OpaqueAlpha ? MagickTrue : MagickFalse;
3346   status=MagickTrue;
3347   image_view=AcquireCacheView(image);
3348 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3349   #pragma omp parallel for schedule(dynamic,4) shared(status)
3350 #endif
3351   for (y=0; y < (ssize_t) image->rows; y++)
3352   {
3353     register Quantum
3354       *restrict q;
3355
3356     register ssize_t
3357       x;
3358
3359     if (status == MagickFalse)
3360       continue;
3361     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3362     if (q == (Quantum *) NULL)
3363       {
3364         status=MagickFalse;
3365         continue;
3366       }
3367     for (x=0; x < (ssize_t) image->columns; x++)
3368     {
3369       SetPixelAlpha(image,alpha,q);
3370       q+=GetPixelChannels(image);
3371     }
3372     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3373       status=MagickFalse;
3374   }
3375   image_view=DestroyCacheView(image_view);
3376   return(status);
3377 }
3378 \f
3379 /*
3380 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3381 %                                                                             %
3382 %                                                                             %
3383 %                                                                             %
3384 %   S e t I m a g e T y p e                                                   %
3385 %                                                                             %
3386 %                                                                             %
3387 %                                                                             %
3388 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3389 %
3390 %  SetImageType() sets the type of image.  Choose from these types:
3391 %
3392 %        Bilevel        Grayscale       GrayscaleMatte
3393 %        Palette        PaletteMatte    TrueColor
3394 %        TrueColorMatte ColorSeparation ColorSeparationMatte
3395 %        OptimizeType
3396 %
3397 %  The format of the SetImageType method is:
3398 %
3399 %      MagickBooleanType SetImageType(Image *image,const ImageType type,
3400 %        ExceptionInfo *exception)
3401 %
3402 %  A description of each parameter follows:
3403 %
3404 %    o image: the image.
3405 %
3406 %    o type: Image type.
3407 %
3408 %    o exception: return any errors or warnings in this structure.
3409 %
3410 */
3411 MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type,
3412   ExceptionInfo *exception)
3413 {
3414   const char
3415     *artifact;
3416
3417   ImageInfo
3418     *image_info;
3419
3420   MagickBooleanType
3421     status;
3422
3423   QuantizeInfo
3424     *quantize_info;
3425
3426   assert(image != (Image *) NULL);
3427   if (image->debug != MagickFalse)
3428     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3429   assert(image->signature == MagickSignature);
3430   status=MagickTrue;
3431   image_info=AcquireImageInfo();
3432   image_info->dither=image->dither;
3433   artifact=GetImageArtifact(image,"dither");
3434   if (artifact != (const char *) NULL)
3435     (void) SetImageOption(image_info,"dither",artifact);
3436   switch (type)
3437   {
3438     case BilevelType:
3439     {
3440       if (IsImageGray(image,exception) == MagickFalse)
3441         status=TransformImageColorspace(image,GRAYColorspace,exception);
3442       if (IsImageMonochrome(image,exception) == MagickFalse)
3443         {
3444           quantize_info=AcquireQuantizeInfo(image_info);
3445           quantize_info->number_colors=2;
3446           quantize_info->colorspace=GRAYColorspace;
3447           status=QuantizeImage(quantize_info,image,exception);
3448           quantize_info=DestroyQuantizeInfo(quantize_info);
3449         }
3450       image->matte=MagickFalse;
3451       break;
3452     }
3453     case GrayscaleType:
3454     {
3455       if (IsImageGray(image,exception) == MagickFalse)
3456         status=TransformImageColorspace(image,GRAYColorspace,exception);
3457       image->matte=MagickFalse;
3458       break;
3459     }
3460     case GrayscaleMatteType:
3461     {
3462       if (IsImageGray(image,exception) == MagickFalse)
3463         status=TransformImageColorspace(image,GRAYColorspace,exception);
3464       if (image->matte == MagickFalse)
3465         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3466       break;
3467     }
3468     case PaletteType:
3469     {
3470       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3471         status=TransformImageColorspace(image,RGBColorspace,exception);
3472       if ((image->storage_class == DirectClass) || (image->colors > 256))
3473         {
3474           quantize_info=AcquireQuantizeInfo(image_info);
3475           quantize_info->number_colors=256;
3476           status=QuantizeImage(quantize_info,image,exception);
3477           quantize_info=DestroyQuantizeInfo(quantize_info);
3478         }
3479       image->matte=MagickFalse;
3480       break;
3481     }
3482     case PaletteBilevelMatteType:
3483     {
3484       ChannelType
3485         channel_mask;
3486
3487       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3488         status=TransformImageColorspace(image,RGBColorspace,exception);
3489       if (image->matte == MagickFalse)
3490         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3491       channel_mask=SetPixelChannelMask(image,AlphaChannel);
3492       (void) BilevelImage(image,(double) QuantumRange/2.0,exception);
3493       (void) SetPixelChannelMask(image,channel_mask);
3494       quantize_info=AcquireQuantizeInfo(image_info);
3495       status=QuantizeImage(quantize_info,image,exception);
3496       quantize_info=DestroyQuantizeInfo(quantize_info);
3497       break;
3498     }
3499     case PaletteMatteType:
3500     {
3501       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3502         status=TransformImageColorspace(image,RGBColorspace,exception);
3503       if (image->matte == MagickFalse)
3504         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3505       quantize_info=AcquireQuantizeInfo(image_info);
3506       quantize_info->colorspace=TransparentColorspace;
3507       status=QuantizeImage(quantize_info,image,exception);
3508       quantize_info=DestroyQuantizeInfo(quantize_info);
3509       break;
3510     }
3511     case TrueColorType:
3512     {
3513       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3514         status=TransformImageColorspace(image,RGBColorspace,exception);
3515       if (image->storage_class != DirectClass)
3516         status=SetImageStorageClass(image,DirectClass,exception);
3517       image->matte=MagickFalse;
3518       break;
3519     }
3520     case TrueColorMatteType:
3521     {
3522       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3523         status=TransformImageColorspace(image,RGBColorspace,exception);
3524       if (image->storage_class != DirectClass)
3525         status=SetImageStorageClass(image,DirectClass,exception);
3526       if (image->matte == MagickFalse)
3527         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3528       break;
3529     }
3530     case ColorSeparationType:
3531     {
3532       if (image->colorspace != CMYKColorspace)
3533         {
3534           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3535             status=TransformImageColorspace(image,RGBColorspace,exception);
3536           status=TransformImageColorspace(image,CMYKColorspace,exception);
3537         }
3538       if (image->storage_class != DirectClass)
3539         status=SetImageStorageClass(image,DirectClass,exception);
3540       image->matte=MagickFalse;
3541       break;
3542     }
3543     case ColorSeparationMatteType:
3544     {
3545       if (image->colorspace != CMYKColorspace)
3546         {
3547           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3548             status=TransformImageColorspace(image,RGBColorspace,exception);
3549           status=TransformImageColorspace(image,CMYKColorspace,exception);
3550         }
3551       if (image->storage_class != DirectClass)
3552         status=SetImageStorageClass(image,DirectClass,exception);
3553       if (image->matte == MagickFalse)
3554         status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3555       break;
3556     }
3557     case OptimizeType:
3558     case UndefinedType:
3559       break;
3560   }
3561   image->type=type;
3562   image_info=DestroyImageInfo(image_info);
3563   return(status);
3564 }
3565 \f
3566 /*
3567 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3568 %                                                                             %
3569 %                                                                             %
3570 %                                                                             %
3571 %   S e t I m a g e V i r t u a l P i x e l M e t h o d                       %
3572 %                                                                             %
3573 %                                                                             %
3574 %                                                                             %
3575 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3576 %
3577 %  SetImageVirtualPixelMethod() sets the "virtual pixels" method for the
3578 %  image and returns the previous setting.  A virtual pixel is any pixel access
3579 %  that is outside the boundaries of the image cache.
3580 %
3581 %  The format of the SetImageVirtualPixelMethod() method is:
3582 %
3583 %      VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3584 %        const VirtualPixelMethod virtual_pixel_method)
3585 %
3586 %  A description of each parameter follows:
3587 %
3588 %    o image: the image.
3589 %
3590 %    o virtual_pixel_method: choose the type of virtual pixel.
3591 %
3592 */
3593 MagickExport VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3594   const VirtualPixelMethod virtual_pixel_method)
3595 {
3596   assert(image != (const Image *) NULL);
3597   assert(image->signature == MagickSignature);
3598   if (image->debug != MagickFalse)
3599     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3600   return(SetPixelCacheVirtualMethod(image,virtual_pixel_method));
3601 }
3602 \f
3603 /*
3604 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3605 %                                                                             %
3606 %                                                                             %
3607 %                                                                             %
3608 %     S m u s h I m a g e s                                                   %
3609 %                                                                             %
3610 %                                                                             %
3611 %                                                                             %
3612 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3613 %
3614 %  SmushImages() takes all images from the current image pointer to the end
3615 %  of the image list and smushes them to each other top-to-bottom if the
3616 %  stack parameter is true, otherwise left-to-right.
3617 %
3618 %  The current gravity setting now effects how the image is justified in the
3619 %  final image.
3620 %
3621 %  The format of the SmushImages method is:
3622 %
3623 %      Image *SmushImages(const Image *images,const MagickBooleanType stack,
3624 %        ExceptionInfo *exception)
3625 %
3626 %  A description of each parameter follows:
3627 %
3628 %    o images: the image sequence.
3629 %
3630 %    o stack: A value other than 0 stacks the images top-to-bottom.
3631 %
3632 %    o offset: minimum distance in pixels between images.
3633 %
3634 %    o exception: return any errors or warnings in this structure.
3635 %
3636 */
3637
3638 static ssize_t SmushXGap(const Image *smush_image,const Image *images,
3639   const ssize_t offset,ExceptionInfo *exception)
3640 {
3641   CacheView
3642     *left_view,
3643     *right_view;
3644
3645   const Image
3646     *left_image,
3647     *right_image;
3648
3649   RectangleInfo
3650     left_geometry,
3651     right_geometry;
3652
3653   register const Quantum
3654     *p;
3655
3656   register ssize_t
3657     i,
3658     y;
3659
3660   size_t
3661     gap;
3662
3663   ssize_t
3664     x;
3665
3666   if (images->previous == (Image *) NULL)
3667     return(0);
3668   right_image=images;
3669   SetGeometry(smush_image,&right_geometry);
3670   GravityAdjustGeometry(right_image->columns,right_image->rows,
3671     right_image->gravity,&right_geometry);
3672   left_image=images->previous;
3673   SetGeometry(smush_image,&left_geometry);
3674   GravityAdjustGeometry(left_image->columns,left_image->rows,
3675     left_image->gravity,&left_geometry);
3676   gap=right_image->columns;
3677   left_view=AcquireCacheView(left_image);
3678   right_view=AcquireCacheView(right_image);
3679   for (y=0; y < (ssize_t) smush_image->rows; y++)
3680   {
3681     for (x=(ssize_t) left_image->columns-1; x > 0; x--)
3682     {
3683       p=GetCacheViewVirtualPixels(left_view,x,left_geometry.y+y,1,1,exception);
3684       if ((p == (const Quantum *) NULL) ||
3685           (GetPixelAlpha(left_image,p) != TransparentAlpha) ||
3686           ((left_image->columns-x-1) >= gap))
3687         break;
3688     }
3689     i=(ssize_t) left_image->columns-x-1;
3690     for (x=0; x < (ssize_t) right_image->columns; x++)
3691     {
3692       p=GetCacheViewVirtualPixels(right_view,x,right_geometry.y+y,1,1,
3693         exception);
3694       if ((p == (const Quantum *) NULL) ||
3695           (GetPixelAlpha(right_image,p) != TransparentAlpha) ||
3696           ((x+i) >= (ssize_t) gap))
3697         break;
3698     }
3699     if ((x+i) < (ssize_t) gap)
3700       gap=(size_t) (x+i);
3701   }
3702   right_view=DestroyCacheView(right_view);
3703   left_view=DestroyCacheView(left_view);
3704   if (y < (ssize_t) smush_image->rows)
3705     return(offset);
3706   return((ssize_t) gap-offset);
3707 }
3708
3709 static ssize_t SmushYGap(const Image *smush_image,const Image *images,
3710   const ssize_t offset,ExceptionInfo *exception)
3711 {
3712   CacheView
3713     *bottom_view,
3714     *top_view;
3715
3716   const Image
3717     *bottom_image,
3718     *top_image;
3719
3720   RectangleInfo
3721     bottom_geometry,
3722     top_geometry;
3723
3724   register const Quantum
3725     *p;
3726
3727   register ssize_t
3728     i,
3729     x;
3730
3731   size_t
3732     gap;
3733
3734   ssize_t
3735     y;
3736
3737   if (images->previous == (Image *) NULL)
3738     return(0);
3739   bottom_image=images;
3740   SetGeometry(smush_image,&bottom_geometry);
3741   GravityAdjustGeometry(bottom_image->columns,bottom_image->rows,
3742     bottom_image->gravity,&bottom_geometry);
3743   top_image=images->previous;
3744   SetGeometry(smush_image,&top_geometry);
3745   GravityAdjustGeometry(top_image->columns,top_image->rows,top_image->gravity,
3746     &top_geometry);
3747   gap=bottom_image->rows;
3748   top_view=AcquireCacheView(top_image);
3749   bottom_view=AcquireCacheView(bottom_image);
3750   for (x=0; x < (ssize_t) smush_image->columns; x++)
3751   {
3752     for (y=(ssize_t) top_image->rows-1; y > 0; y--)
3753     {
3754       p=GetCacheViewVirtualPixels(top_view,top_geometry.x+x,y,1,1,exception);
3755       if ((p == (const Quantum *) NULL) ||
3756           (GetPixelAlpha(top_image,p) != TransparentAlpha) ||
3757           ((top_image->rows-y-1) >= gap))
3758         break;
3759     }
3760     i=(ssize_t) top_image->rows-y-1;
3761     for (y=0; y < (ssize_t) bottom_image->rows; y++)
3762     {
3763       p=GetCacheViewVirtualPixels(bottom_view,bottom_geometry.x+x,y,1,1,
3764         exception);
3765       if ((p == (const Quantum *) NULL) ||
3766           (GetPixelAlpha(bottom_image,p) != TransparentAlpha) ||
3767           ((y+i) >= (ssize_t) gap))
3768         break;
3769     }
3770     if ((y+i) < (ssize_t) gap)
3771       gap=(size_t) (y+i);
3772   }
3773   bottom_view=DestroyCacheView(bottom_view);
3774   top_view=DestroyCacheView(top_view);
3775   if (x < (ssize_t) smush_image->columns)
3776     return(offset);
3777   return((ssize_t) gap-offset);
3778 }
3779
3780 MagickExport Image *SmushImages(const Image *images,
3781   const MagickBooleanType stack,const ssize_t offset,ExceptionInfo *exception)
3782 {
3783 #define SmushImageTag  "Smush/Image"
3784
3785   CacheView
3786     *smush_view;
3787
3788   const Image
3789     *image;
3790
3791   Image
3792     *smush_image;
3793
3794   MagickBooleanType
3795     matte,
3796     proceed,
3797     status;
3798
3799   MagickOffsetType
3800     n;
3801
3802   RectangleInfo
3803     geometry;
3804
3805   register const Image
3806     *next;
3807
3808   size_t
3809     height,
3810     number_images,
3811     width;
3812
3813   ssize_t
3814     x_offset,
3815     y_offset;
3816
3817   /*
3818     Compute maximum area of smushed area.
3819   */
3820   assert(images != (Image *) NULL);
3821   assert(images->signature == MagickSignature);
3822   if (images->debug != MagickFalse)
3823     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
3824   assert(exception != (ExceptionInfo *) NULL);
3825   assert(exception->signature == MagickSignature);
3826   image=images;
3827   matte=image->matte;
3828   number_images=1;
3829   width=image->columns;
3830   height=image->rows;
3831   next=GetNextImageInList(image);
3832   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
3833   {
3834     if (next->matte != MagickFalse)
3835       matte=MagickTrue;
3836     number_images++;
3837     if (stack != MagickFalse)
3838       {
3839         if (next->columns > width)
3840           width=next->columns;
3841         height+=next->rows;
3842         if (next->previous != (Image *) NULL)
3843           height+=offset;
3844         continue;
3845       }
3846     width+=next->columns;
3847     if (next->previous != (Image *) NULL)
3848       width+=offset;
3849     if (next->rows > height)
3850       height=next->rows;
3851   }
3852   /*
3853     Smush images.
3854   */
3855   smush_image=CloneImage(image,width,height,MagickTrue,exception);
3856   if (smush_image == (Image *) NULL)
3857     return((Image *) NULL);
3858   if (SetImageStorageClass(smush_image,DirectClass,exception) == MagickFalse)
3859     {
3860       smush_image=DestroyImage(smush_image);
3861       return((Image *) NULL);
3862     }
3863   smush_image->matte=matte;
3864   (void) SetImageBackgroundColor(smush_image,exception);
3865   status=MagickTrue;
3866   x_offset=0;
3867   y_offset=0;
3868   smush_view=AcquireCacheView(smush_image);
3869   for (n=0; n < (MagickOffsetType) number_images; n++)
3870   {
3871     SetGeometry(smush_image,&geometry);
3872     GravityAdjustGeometry(image->columns,image->rows,image->gravity,&geometry);
3873     if (stack != MagickFalse)
3874       {
3875         x_offset-=geometry.x;
3876         y_offset-=SmushYGap(smush_image,image,offset,exception);
3877       }
3878     else
3879       {
3880         x_offset-=SmushXGap(smush_image,image,offset,exception);
3881         y_offset-=geometry.y;
3882       }
3883     status=CompositeImage(smush_image,OverCompositeOp,image,x_offset,y_offset,
3884       exception);
3885     proceed=SetImageProgress(image,SmushImageTag,n,number_images);
3886     if (proceed == MagickFalse)
3887       break;
3888     if (stack == MagickFalse)
3889       {
3890         x_offset+=(ssize_t) image->columns;
3891         y_offset=0;
3892       }
3893     else
3894       {
3895         x_offset=0;
3896         y_offset+=(ssize_t) image->rows;
3897       }
3898     image=GetNextImageInList(image);
3899   }
3900   if (stack == MagickFalse)
3901     smush_image->columns=(size_t) x_offset;
3902   else
3903     smush_image->rows=(size_t) y_offset;
3904   smush_view=DestroyCacheView(smush_view);
3905   if (status == MagickFalse)
3906     smush_image=DestroyImage(smush_image);
3907   return(smush_image);
3908 }
3909 \f
3910 /*
3911 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3912 %                                                                             %
3913 %                                                                             %
3914 %                                                                             %
3915 %   S t r i p I m a g e                                                       %
3916 %                                                                             %
3917 %                                                                             %
3918 %                                                                             %
3919 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3920 %
3921 %  StripImage() strips an image of all profiles and comments.
3922 %
3923 %  The format of the StripImage method is:
3924 %
3925 %      MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3926 %
3927 %  A description of each parameter follows:
3928 %
3929 %    o image: the image.
3930 %
3931 %    o exception: return any errors or warnings in this structure.
3932 %
3933 */
3934 MagickExport MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3935 {
3936   MagickBooleanType
3937     status;
3938
3939   assert(image != (Image *) NULL);
3940   if (image->debug != MagickFalse)
3941     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3942   (void) exception;
3943   DestroyImageProfiles(image);
3944   (void) DeleteImageProperty(image,"comment");
3945   (void) DeleteImageProperty(image,"date:create");
3946   (void) DeleteImageProperty(image,"date:modify");
3947   status=SetImageArtifact(image,"png:include-chunk","none,trns,gama");
3948   return(status);
3949 }
3950 \f
3951 /*
3952 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3953 %                                                                             %
3954 %                                                                             %
3955 %                                                                             %
3956 +   S y n c I m a g e                                                         %
3957 %                                                                             %
3958 %                                                                             %
3959 %                                                                             %
3960 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3961 %
3962 %  SyncImage() initializes the red, green, and blue intensities of each pixel
3963 %  as defined by the colormap index.
3964 %
3965 %  The format of the SyncImage method is:
3966 %
3967 %      MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3968 %
3969 %  A description of each parameter follows:
3970 %
3971 %    o image: the image.
3972 %
3973 %    o exception: return any errors or warnings in this structure.
3974 %
3975 */
3976
3977 static inline Quantum PushColormapIndex(Image *image,
3978   const size_t index,MagickBooleanType *range_exception)
3979 {
3980   if (index < image->colors)
3981     return((Quantum) index);
3982   *range_exception=MagickTrue;
3983   return((Quantum) 0);
3984 }
3985
3986 MagickExport MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3987 {
3988   CacheView
3989     *image_view;
3990
3991   MagickBooleanType
3992     range_exception,
3993     status;
3994
3995   ssize_t
3996     y;
3997
3998   assert(image != (Image *) NULL);
3999   if (image->debug != MagickFalse)
4000     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
4001   assert(image->signature == MagickSignature);
4002   if (image->storage_class == DirectClass)
4003     return(MagickFalse);
4004   range_exception=MagickFalse;
4005   status=MagickTrue;
4006   image_view=AcquireCacheView(image);
4007 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4008   #pragma omp parallel for schedule(dynamic,4) shared(status)
4009 #endif
4010   for (y=0; y < (ssize_t) image->rows; y++)
4011   {
4012     Quantum
4013       index;
4014
4015     register Quantum
4016       *restrict q;
4017
4018     register ssize_t
4019       x;
4020
4021     if (status == MagickFalse)
4022       continue;
4023     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
4024     if (q == (Quantum *) NULL)
4025       {
4026         status=MagickFalse;
4027         continue;
4028       }
4029     for (x=0; x < (ssize_t) image->columns; x++)
4030     {
4031       index=PushColormapIndex(image,(size_t) GetPixelIndex(image,q),
4032         &range_exception);
4033       SetPixelPixelInfo(image,image->colormap+(ssize_t) index,q);
4034       q+=GetPixelChannels(image);
4035     }
4036     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4037       status=MagickFalse;
4038   }
4039   image_view=DestroyCacheView(image_view);
4040   if (range_exception != MagickFalse)
4041     (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
4042       "InvalidColormapIndex","`%s'",image->filename);
4043   return(status);
4044 }
4045 \f
4046 /*
4047 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4048 %                                                                             %
4049 %                                                                             %
4050 %                                                                             %
4051 %   S y n c I m a g e S e t t i n g s                                         %
4052 %                                                                             %
4053 %                                                                             %
4054 %                                                                             %
4055 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4056 %
4057 %  SyncImageSettings() sync the image info options to the image.
4058 %
4059 %  The format of the SyncImageSettings method is:
4060 %
4061 %      MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4062 %        Image *image,ExceptionInfo *exception)
4063 %      MagickBooleanType SyncImagesSettings(const ImageInfo *image_info,
4064 %        Image *image,ExceptionInfo *exception)
4065 %
4066 %  A description of each parameter follows:
4067 %
4068 %    o image_info: the image info.
4069 %
4070 %    o image: the image.
4071 %
4072 %    o exception: return any errors or warnings in this structure.
4073 %
4074 */
4075
4076 MagickExport MagickBooleanType SyncImagesSettings(ImageInfo *image_info,
4077   Image *images,ExceptionInfo *exception)
4078 {
4079   Image
4080     *image;
4081
4082   assert(image_info != (const ImageInfo *) NULL);
4083   assert(image_info->signature == MagickSignature);
4084   assert(images != (Image *) NULL);
4085   assert(images->signature == MagickSignature);
4086   if (images->debug != MagickFalse)
4087     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
4088   image=images;
4089   for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
4090     (void) SyncImageSettings(image_info,image,exception);
4091   (void) DeleteImageOption(image_info,"page");
4092   return(MagickTrue);
4093 }
4094
4095 MagickExport MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4096   Image *image,ExceptionInfo *exception)
4097 {
4098   char
4099     property[MaxTextExtent];
4100
4101   const char
4102     *option,
4103     *value;
4104
4105   GeometryInfo
4106     geometry_info;
4107
4108   MagickStatusType
4109     flags;
4110
4111   ResolutionType
4112     units;
4113
4114   /*
4115     Sync image options.
4116   */
4117   assert(image_info != (const ImageInfo *) NULL);
4118   assert(image_info->signature == MagickSignature);
4119   assert(image != (Image *) NULL);
4120   assert(image->signature == MagickSignature);
4121   if (image->debug != MagickFalse)
4122     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4123   option=GetImageOption(image_info,"background");
4124   if (option != (const char *) NULL)
4125     (void) QueryColorCompliance(option,AllCompliance,&image->background_color,
4126       exception);
4127   option=GetImageOption(image_info,"bias");
4128   if (option != (const char *) NULL)
4129     image->bias=SiPrefixToDouble(option,QuantumRange);
4130   option=GetImageOption(image_info,"black-point-compensation");
4131   if (option != (const char *) NULL)
4132     image->black_point_compensation=(MagickBooleanType) ParseCommandOption(
4133       MagickBooleanOptions,MagickFalse,option);
4134   option=GetImageOption(image_info,"blue-primary");
4135   if (option != (const char *) NULL)
4136     {
4137       flags=ParseGeometry(option,&geometry_info);
4138       image->chromaticity.blue_primary.x=geometry_info.rho;
4139       image->chromaticity.blue_primary.y=geometry_info.sigma;
4140       if ((flags & SigmaValue) == 0)
4141         image->chromaticity.blue_primary.y=image->chromaticity.blue_primary.x;
4142     }
4143   option=GetImageOption(image_info,"bordercolor");
4144   if (option != (const char *) NULL)
4145     (void) QueryColorCompliance(option,AllCompliance,&image->border_color,
4146       exception);
4147   option=GetImageOption(image_info,"compose");
4148   if (option != (const char *) NULL)
4149     image->compose=(CompositeOperator) ParseCommandOption(MagickComposeOptions,
4150       MagickFalse,option);
4151   option=GetImageOption(image_info,"compress");
4152   if (option != (const char *) NULL)
4153     image->compression=(CompressionType) ParseCommandOption(
4154       MagickCompressOptions,MagickFalse,option);
4155   option=GetImageOption(image_info,"debug");
4156   if (option != (const char *) NULL)
4157     image->debug=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4158       MagickFalse,option);
4159   option=GetImageOption(image_info,"density");
4160   if (option != (const char *) NULL)
4161     {
4162       GeometryInfo
4163         geometry_info;
4164
4165       flags=ParseGeometry(option,&geometry_info);
4166       image->x_resolution=geometry_info.rho;
4167       image->y_resolution=geometry_info.sigma;
4168       if ((flags & SigmaValue) == 0)
4169         image->y_resolution=image->x_resolution;
4170     }
4171   option=GetImageOption(image_info,"depth");
4172   if (option != (const char *) NULL)
4173     image->depth=StringToUnsignedLong(option);
4174   option=GetImageOption(image_info,"endian");
4175   if (option != (const char *) NULL)
4176     image->endian=(EndianType) ParseCommandOption(MagickEndianOptions,
4177       MagickFalse,option);
4178   option=GetImageOption(image_info,"filter");
4179   if (option != (const char *) NULL)
4180     image->filter=(FilterTypes) ParseCommandOption(MagickFilterOptions,
4181       MagickFalse,option);
4182   option=GetImageOption(image_info,"fuzz");
4183   if (option != (const char *) NULL)
4184     image->fuzz=SiPrefixToDouble(option,(double) QuantumRange+1.0);
4185   option=GetImageOption(image_info,"gravity");
4186   if (option != (const char *) NULL)
4187     image->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
4188       MagickFalse,option);
4189   option=GetImageOption(image_info,"green-primary");
4190   if (option != (const char *) NULL)
4191     {
4192       flags=ParseGeometry(option,&geometry_info);
4193       image->chromaticity.green_primary.x=geometry_info.rho;
4194       image->chromaticity.green_primary.y=geometry_info.sigma;
4195       if ((flags & SigmaValue) == 0)
4196         image->chromaticity.green_primary.y=image->chromaticity.green_primary.x;
4197     }
4198   option=GetImageOption(image_info,"intent");
4199   if (option != (const char *) NULL)
4200     image->rendering_intent=(RenderingIntent) ParseCommandOption(
4201       MagickIntentOptions,MagickFalse,option);
4202   option=GetImageOption(image_info,"interlace");
4203   if (option != (const char *) NULL)
4204     image->interlace=(InterlaceType) ParseCommandOption(MagickInterlaceOptions,
4205       MagickFalse,option);
4206   option=GetImageOption(image_info,"interpolate");
4207   if (option != (const char *) NULL)
4208     image->interpolate=(PixelInterpolateMethod) ParseCommandOption(
4209       MagickInterpolateOptions,MagickFalse,option);
4210   option=GetImageOption(image_info,"loop");
4211   if (option != (const char *) NULL)
4212     image->iterations=StringToUnsignedLong(option);
4213   option=GetImageOption(image_info,"mattecolor");
4214   if (option != (const char *) NULL)
4215     (void) QueryColorCompliance(option,AllCompliance,&image->matte_color,
4216       exception);
4217   option=GetImageOption(image_info,"orient");
4218   if (option != (const char *) NULL)
4219     image->orientation=(OrientationType) ParseCommandOption(
4220       MagickOrientationOptions,MagickFalse,option);
4221   option=GetImageOption(image_info,"page");
4222   if (option != (const char *) NULL)
4223     {
4224       char
4225         *geometry;
4226
4227       geometry=GetPageGeometry(option);
4228       flags=ParseAbsoluteGeometry(geometry,&image->page);
4229       geometry=DestroyString(geometry);
4230     }
4231   option=GetImageOption(image_info,"quality");
4232   if (option != (const char *) NULL)
4233     image->quality=StringToUnsignedLong(option);
4234   option=GetImageOption(image_info,"red-primary");
4235   if (option != (const char *) NULL)
4236     {
4237       flags=ParseGeometry(option,&geometry_info);
4238       image->chromaticity.red_primary.x=geometry_info.rho;
4239       image->chromaticity.red_primary.y=geometry_info.sigma;
4240       if ((flags & SigmaValue) == 0)
4241         image->chromaticity.red_primary.y=image->chromaticity.red_primary.x;
4242     }
4243   if (image_info->quality != UndefinedCompressionQuality)
4244     image->quality=image_info->quality;
4245   option=GetImageOption(image_info,"scene");
4246   if (option != (const char *) NULL)
4247     image->scene=StringToUnsignedLong(option);
4248   option=GetImageOption(image_info,"taint");
4249   if (option != (const char *) NULL)
4250     image->taint=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4251       MagickFalse,option);
4252   option=GetImageOption(image_info,"tile-offset");
4253   if (option != (const char *) NULL)
4254     {
4255       char
4256         *geometry;
4257
4258       geometry=GetPageGeometry(option);
4259       flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
4260       geometry=DestroyString(geometry);
4261     }
4262   option=GetImageOption(image_info,"transparent-color");
4263   if (option != (const char *) NULL)
4264     (void) QueryColorCompliance(option,AllCompliance,&image->transparent_color,
4265       exception);
4266   option=GetImageOption(image_info,"type");
4267   if (option != (const char *) NULL)
4268     image->type=(ImageType) ParseCommandOption(MagickTypeOptions,MagickFalse,
4269       option);
4270   option=GetImageOption(image_info,"units");
4271   if (option != (const char *) NULL)
4272     units=(ResolutionType) ParseCommandOption(MagickResolutionOptions,
4273       MagickFalse,option);
4274   else
4275     units = image_info->units;
4276   if (units != UndefinedResolution)
4277     {
4278       if (image->units != units)
4279         switch (image->units)
4280         {
4281           case PixelsPerInchResolution:
4282           {
4283             if (units == PixelsPerCentimeterResolution)
4284               {
4285                 image->x_resolution/=2.54;
4286                 image->y_resolution/=2.54;
4287               }
4288             break;
4289           }
4290           case PixelsPerCentimeterResolution:
4291           {
4292             if (units == PixelsPerInchResolution)
4293               {
4294                 image->x_resolution=(double) ((size_t) (100.0*2.54*
4295                   image->x_resolution+0.5))/100.0;
4296                 image->y_resolution=(double) ((size_t) (100.0*2.54*
4297                   image->y_resolution+0.5))/100.0;
4298               }
4299             break;
4300           }
4301           default:
4302             break;
4303         }
4304       image->units=units;
4305     }
4306   option=GetImageOption(image_info,"white-point");
4307   if (option != (const char *) NULL)
4308     {
4309       flags=ParseGeometry(option,&geometry_info);
4310       image->chromaticity.white_point.x=geometry_info.rho;
4311       image->chromaticity.white_point.y=geometry_info.sigma;
4312       if ((flags & SigmaValue) == 0)
4313         image->chromaticity.white_point.y=image->chromaticity.white_point.x;
4314     }
4315   ResetImageOptionIterator(image_info);
4316   for (option=GetNextImageOption(image_info); option != (const char *) NULL; )
4317   {
4318     value=GetImageOption(image_info,option);
4319     if (value != (const char *) NULL)
4320       {
4321         (void) FormatLocaleString(property,MaxTextExtent,"%s",option);
4322         (void) SetImageArtifact(image,property,value);
4323       }
4324     option=GetNextImageOption(image_info);
4325   }
4326   return(MagickTrue);
4327 }