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->resolution.x=DefaultResolution;
 189   image->resolution.y=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->resolution.x=geometry_info.rho;
 246       image->resolution.y=geometry_info.sigma;
 247       if ((flags & SigmaValue) == 0)
 248         image->resolution.y=image->resolution.x;
 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     for (x=0; x < (ssize_t) image->columns; x++)
1826     {
1827       PixelTrait
1828         traits;
1829
1830       register ssize_t
1831         i;
1832
1833       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1834       {
1835         MagickRealType
1836           pixel;
1837
1838         traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
1839         if (traits == UndefinedPixelTrait)
1840           continue;
1841         pixel=(MagickRealType) p[i];
1842         if ((pixel < 0.0) || (pixel > QuantumRange) ||
1843             (pixel != (QuantumAny) pixel))
1844           break;
1845       }
1846       p+=GetPixelChannels(image);
1847       if (i < (ssize_t) GetPixelChannels(image))
1848         status=MagickFalse;
1849     }
1850     if (x < (ssize_t) image->columns)
1851       status=MagickFalse;
1852   }
1853   image_view=DestroyCacheView(image_view);
1854   return(status != MagickFalse ? MagickFalse : MagickTrue);
1855 #endif
1856 }
1857 \f
1858 /*
1859 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1860 %                                                                             %
1861 %                                                                             %
1862 %                                                                             %
1863 %     I s I m a g e O b j e c t                                               %
1864 %                                                                             %
1865 %                                                                             %
1866 %                                                                             %
1867 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1868 %
1869 %  IsImageObject() returns MagickTrue if the image sequence contains a valid
1870 %  set of image objects.
1871 %
1872 %  The format of the IsImageObject method is:
1873 %
1874 %      MagickBooleanType IsImageObject(const Image *image)
1875 %
1876 %  A description of each parameter follows:
1877 %
1878 %    o image: the image.
1879 %
1880 */
1881 MagickExport MagickBooleanType IsImageObject(const Image *image)
1882 {
1883   register const Image
1884     *p;
1885
1886   assert(image != (Image *) NULL);
1887   if (image->debug != MagickFalse)
1888     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1889   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1890     if (p->signature != MagickSignature)
1891       return(MagickFalse);
1892   return(MagickTrue);
1893 }
1894 \f
1895 /*
1896 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1897 %                                                                             %
1898 %                                                                             %
1899 %                                                                             %
1900 %     I s T a i n t I m a g e                                                 %
1901 %                                                                             %
1902 %                                                                             %
1903 %                                                                             %
1904 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1905 %
1906 %  IsTaintImage() returns MagickTrue any pixel in the image has been altered
1907 %  since it was first constituted.
1908 %
1909 %  The format of the IsTaintImage method is:
1910 %
1911 %      MagickBooleanType IsTaintImage(const Image *image)
1912 %
1913 %  A description of each parameter follows:
1914 %
1915 %    o image: the image.
1916 %
1917 */
1918 MagickExport MagickBooleanType IsTaintImage(const Image *image)
1919 {
1920   char
1921     magick[MaxTextExtent],
1922     filename[MaxTextExtent];
1923
1924   register const Image
1925     *p;
1926
1927   assert(image != (Image *) NULL);
1928   if (image->debug != MagickFalse)
1929     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1930   assert(image->signature == MagickSignature);
1931   (void) CopyMagickString(magick,image->magick,MaxTextExtent);
1932   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1933   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1934   {
1935     if (p->taint != MagickFalse)
1936       return(MagickTrue);
1937     if (LocaleCompare(p->magick,magick) != 0)
1938       return(MagickTrue);
1939     if (LocaleCompare(p->filename,filename) != 0)
1940       return(MagickTrue);
1941   }
1942   return(MagickFalse);
1943 }
1944 \f
1945 /*
1946 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1947 %                                                                             %
1948 %                                                                             %
1949 %                                                                             %
1950 %   M o d i f y I m a g e                                                     %
1951 %                                                                             %
1952 %                                                                             %
1953 %                                                                             %
1954 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1955 %
1956 %  ModifyImage() ensures that there is only a single reference to the image
1957 %  to be modified, updating the provided image pointer to point to a clone of
1958 %  the original image if necessary.
1959 %
1960 %  The format of the ModifyImage method is:
1961 %
1962 %      MagickBooleanType ModifyImage(Image *image,ExceptionInfo *exception)
1963 %
1964 %  A description of each parameter follows:
1965 %
1966 %    o image: the image.
1967 %
1968 %    o exception: return any errors or warnings in this structure.
1969 %
1970 */
1971 MagickExport MagickBooleanType ModifyImage(Image **image,
1972   ExceptionInfo *exception)
1973 {
1974   Image
1975     *clone_image;
1976
1977   assert(image != (Image **) NULL);
1978   assert(*image != (Image *) NULL);
1979   assert((*image)->signature == MagickSignature);
1980   if ((*image)->debug != MagickFalse)
1981     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1982   if (GetImageReferenceCount(*image) <= 1)
1983     return(MagickTrue);
1984   clone_image=CloneImage(*image,0,0,MagickTrue,exception);
1985   LockSemaphoreInfo((*image)->semaphore);
1986   (*image)->reference_count--;
1987   UnlockSemaphoreInfo((*image)->semaphore);
1988   *image=clone_image;
1989   return(MagickTrue);
1990 }
1991 \f
1992 /*
1993 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1994 %                                                                             %
1995 %                                                                             %
1996 %                                                                             %
1997 %   N e w M a g i c k I m a g e                                               %
1998 %                                                                             %
1999 %                                                                             %
2000 %                                                                             %
2001 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2002 %
2003 %  NewMagickImage() creates a blank image canvas of the specified size and
2004 %  background color.
2005 %
2006 %  The format of the NewMagickImage method is:
2007 %
2008 %      Image *NewMagickImage(const ImageInfo *image_info,
2009 %        const size_t width,const size_t height,const PixelInfo *background,
2010 %        ExceptionInfo *exception)
2011 %
2012 %  A description of each parameter follows:
2013 %
2014 %    o image: the image.
2015 %
2016 %    o width: the image width.
2017 %
2018 %    o height: the image height.
2019 %
2020 %    o background: the image color.
2021 %
2022 %    o exception: return any errors or warnings in this structure.
2023 %
2024 */
2025 MagickExport Image *NewMagickImage(const ImageInfo *image_info,
2026   const size_t width,const size_t height,const PixelInfo *background,
2027   ExceptionInfo *exception)
2028 {
2029   CacheView
2030     *image_view;
2031
2032   Image
2033     *image;
2034
2035   MagickBooleanType
2036     status;
2037
2038   ssize_t
2039     y;
2040
2041   assert(image_info != (const ImageInfo *) NULL);
2042   if (image_info->debug != MagickFalse)
2043     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2044   assert(image_info->signature == MagickSignature);
2045   assert(background != (const PixelInfo *) NULL);
2046   image=AcquireImage(image_info,exception);
2047   image->columns=width;
2048   image->rows=height;
2049   image->colorspace=background->colorspace;
2050   image->matte=background->matte;
2051   image->fuzz=background->fuzz;
2052   image->depth=background->depth;
2053   status=MagickTrue;
2054   image_view=AcquireCacheView(image);
2055 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2056   #pragma omp parallel for schedule(dynamic,4) shared(status)
2057 #endif
2058   for (y=0; y < (ssize_t) image->rows; y++)
2059   {
2060     register Quantum
2061       *restrict q;
2062
2063     register ssize_t
2064       x;
2065
2066     if (status == MagickFalse)
2067       continue;
2068     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2069     if (q == (Quantum *) NULL)
2070       {
2071         status=MagickFalse;
2072         continue;
2073       }
2074     for (x=0; x < (ssize_t) image->columns; x++)
2075     {
2076       SetPixelInfoPixel(image,background,q);
2077       q+=GetPixelChannels(image);
2078     }
2079     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2080       status=MagickFalse;
2081   }
2082   image_view=DestroyCacheView(image_view);
2083   if (status == MagickFalse)
2084     image=DestroyImage(image);
2085   return(image);
2086 }
2087 \f
2088 /*
2089 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2090 %                                                                             %
2091 %                                                                             %
2092 %                                                                             %
2093 %   R e f e r e n c e I m a g e                                               %
2094 %                                                                             %
2095 %                                                                             %
2096 %                                                                             %
2097 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2098 %
2099 %  ReferenceImage() increments the reference count associated with an image
2100 %  returning a pointer to the image.
2101 %
2102 %  The format of the ReferenceImage method is:
2103 %
2104 %      Image *ReferenceImage(Image *image)
2105 %
2106 %  A description of each parameter follows:
2107 %
2108 %    o image: the image.
2109 %
2110 */
2111 MagickExport Image *ReferenceImage(Image *image)
2112 {
2113   assert(image != (Image *) NULL);
2114   if (image->debug != MagickFalse)
2115     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2116   assert(image->signature == MagickSignature);
2117   LockSemaphoreInfo(image->semaphore);
2118   image->reference_count++;
2119   UnlockSemaphoreInfo(image->semaphore);
2120   return(image);
2121 }
2122 \f
2123 /*
2124 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2125 %                                                                             %
2126 %                                                                             %
2127 %                                                                             %
2128 %   R e s e t I m a g e P a g e                                               %
2129 %                                                                             %
2130 %                                                                             %
2131 %                                                                             %
2132 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2133 %
2134 %  ResetImagePage() resets the image page canvas and position.
2135 %
2136 %  The format of the ResetImagePage method is:
2137 %
2138 %      MagickBooleanType ResetImagePage(Image *image,const char *page)
2139 %
2140 %  A description of each parameter follows:
2141 %
2142 %    o image: the image.
2143 %
2144 %    o page: the relative page specification.
2145 %
2146 */
2147 MagickExport MagickBooleanType ResetImagePage(Image *image,const char *page)
2148 {
2149   MagickStatusType
2150     flags;
2151
2152   RectangleInfo
2153     geometry;
2154
2155   assert(image != (Image *) NULL);
2156   assert(image->signature == MagickSignature);
2157   if (image->debug != MagickFalse)
2158     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2159   flags=ParseAbsoluteGeometry(page,&geometry);
2160   if ((flags & WidthValue) != 0)
2161     {
2162       if ((flags & HeightValue) == 0)
2163         geometry.height=geometry.width;
2164       image->page.width=geometry.width;
2165       image->page.height=geometry.height;
2166     }
2167   if ((flags & AspectValue) != 0)
2168     {
2169       if ((flags & XValue) != 0)
2170         image->page.x+=geometry.x;
2171       if ((flags & YValue) != 0)
2172         image->page.y+=geometry.y;
2173     }
2174   else
2175     {
2176       if ((flags & XValue) != 0)
2177         {
2178           image->page.x=geometry.x;
2179           if ((image->page.width == 0) && (geometry.x > 0))
2180             image->page.width=image->columns+geometry.x;
2181         }
2182       if ((flags & YValue) != 0)
2183         {
2184           image->page.y=geometry.y;
2185           if ((image->page.height == 0) && (geometry.y > 0))
2186             image->page.height=image->rows+geometry.y;
2187         }
2188     }
2189   return(MagickTrue);
2190 }
2191 \f
2192 /*
2193 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2194 %                                                                             %
2195 %                                                                             %
2196 %                                                                             %
2197 %     S e p a r a t e I m a g e C h a n n e l                                 %
2198 %                                                                             %
2199 %                                                                             %
2200 %                                                                             %
2201 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2202 %
2203 %  SeparateImage() separates a channel from the image and returns it as
2204 %  a grayscale image.  A channel is a particular color component of each pixel
2205 %  in the image.
2206 %
2207 %  The format of the SeparateImage method is:
2208 %
2209 %      MagickBooleanType SeparateImage(Image *image,ExceptionInfo *exception)
2210 %
2211 %  A description of each parameter follows:
2212 %
2213 %    o image: the image.
2214 %
2215 %    o exception: return any errors or warnings in this structure.
2216 %
2217 */
2218 MagickExport MagickBooleanType SeparateImage(Image *image,
2219   ExceptionInfo *exception)
2220 {
2221 #define SeparateImageTag  "Separate/Image"
2222
2223   CacheView
2224     *image_view;
2225
2226   MagickBooleanType
2227     status;
2228
2229   MagickOffsetType
2230     progress;
2231
2232   ssize_t
2233     y;
2234
2235   assert(image != (Image *) NULL);
2236   assert(image->signature == MagickSignature);
2237   if (image->debug != MagickFalse)
2238     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2239   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2240     return(MagickFalse);
2241   /*
2242     Separate image channels.
2243   */
2244   status=MagickTrue;
2245   progress=0;
2246   image_view=AcquireCacheView(image);
2247 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2248   #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
2249 #endif
2250   for (y=0; y < (ssize_t) image->rows; y++)
2251   {
2252     register Quantum
2253       *restrict q;
2254
2255     register ssize_t
2256       x;
2257
2258     if (status == MagickFalse)
2259       continue;
2260     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2261     if (q == (Quantum *) NULL)
2262       {
2263         status=MagickFalse;
2264         continue;
2265       }
2266     for (x=0; x < (ssize_t) image->columns; x++)
2267     {
2268       register ssize_t
2269         i;
2270
2271       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2272       {
2273         PixelTrait
2274           traits;
2275
2276         register ssize_t
2277           j;
2278
2279         traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
2280         if (traits == UndefinedPixelTrait)
2281           continue;
2282         if ((traits & UpdatePixelTrait) != 0)
2283           for (j=0; j < (ssize_t) GetPixelChannels(image); j++)
2284             q[j]=q[i];
2285       }
2286       q+=GetPixelChannels(image);
2287     }
2288     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2289       status=MagickFalse;
2290     if (image->progress_monitor != (MagickProgressMonitor) NULL)
2291       {
2292         MagickBooleanType
2293           proceed;
2294
2295 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2296         #pragma omp critical (MagickCore_SeparateImage)
2297 #endif
2298         proceed=SetImageProgress(image,SeparateImageTag,progress++,image->rows);
2299         if (proceed == MagickFalse)
2300           status=MagickFalse;
2301       }
2302   }
2303   image_view=DestroyCacheView(image_view);
2304   (void) SetImageColorspace(image,RGBColorspace,exception);
2305   return(status);
2306 }
2307 \f
2308 /*
2309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2310 %                                                                             %
2311 %                                                                             %
2312 %                                                                             %
2313 %     S e p a r a t e I m a g e s                                             %
2314 %                                                                             %
2315 %                                                                             %
2316 %                                                                             %
2317 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2318 %
2319 %  SeparateImages() returns a separate grayscale image for each channel
2320 %  specified.
2321 %
2322 %  The format of the SeparateImages method is:
2323 %
2324 %      MagickBooleanType SeparateImages(const Image *image,
2325 %        ExceptionInfo *exception)
2326 %
2327 %  A description of each parameter follows:
2328 %
2329 %    o image: the image.
2330 %
2331 %    o exception: return any errors or warnings in this structure.
2332 %
2333 */
2334 MagickExport Image *SeparateImages(const Image *image,ExceptionInfo *exception)
2335 {
2336   ChannelType
2337     channel_mask;
2338
2339   Image
2340     *images,
2341     *separate_image;
2342
2343   register ssize_t
2344     i;
2345
2346   assert(image != (Image *) NULL);
2347   assert(image->signature == MagickSignature);
2348   if (image->debug != MagickFalse)
2349     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2350   images=NewImageList();
2351   for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2352   {
2353     PixelTrait
2354       traits;
2355
2356     traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
2357     if (traits == UndefinedPixelTrait)
2358       continue;
2359     if ((traits & UpdatePixelTrait) != 0)
2360       {
2361         separate_image=CloneImage(image,0,0,MagickTrue,exception);
2362         if (separate_image != (Image *) NULL)
2363           {
2364             channel_mask=SetPixelChannelMask(separate_image,
2365               (ChannelType) (1 << i));
2366             (void) SeparateImage(separate_image,exception);
2367             (void) SetPixelChannelMap(separate_image,channel_mask);
2368             AppendImageToList(&images,separate_image);
2369           }
2370       }
2371   }
2372   return(images);
2373 }
2374 \f
2375 /*
2376 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2377 %                                                                             %
2378 %                                                                             %
2379 %                                                                             %
2380 %   S e t I m a g e A l p h a C h a n n e l                                   %
2381 %                                                                             %
2382 %                                                                             %
2383 %                                                                             %
2384 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2385 %
2386 %  SetImageAlphaChannel() activates, deactivates, resets, or sets the alpha
2387 %  channel.
2388 %
2389 %  The format of the SetImageAlphaChannel method is:
2390 %
2391 %      MagickBooleanType SetImageAlphaChannel(Image *image,
2392 %        const AlphaChannelType alpha_type,ExceptionInfo *exception)
2393 %
2394 %  A description of each parameter follows:
2395 %
2396 %    o image: the image.
2397 %
2398 %    o alpha_type:  The alpha channel type: ActivateAlphaChannel,
2399 %      CopyAlphaChannel, DeactivateAlphaChannel, ExtractAlphaChannel,
2400 %      OpaqueAlphaChannel, SetAlphaChannel, ShapeAlphaChannel, and
2401 %      TransparentAlphaChannel.
2402 %
2403 %    o exception: return any errors or warnings in this structure.
2404 %
2405 */
2406 MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
2407   const AlphaChannelType alpha_type,ExceptionInfo *exception)
2408 {
2409   ChannelType
2410     channel_mask;
2411
2412   MagickBooleanType
2413     status;
2414
2415   assert(image != (Image *) NULL);
2416   if (image->debug != MagickFalse)
2417     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2418   assert(image->signature == MagickSignature);
2419   status=MagickTrue;
2420   switch (alpha_type)
2421   {
2422     case ActivateAlphaChannel:
2423     {
2424       image->matte=MagickTrue;
2425       break;
2426     }
2427     case BackgroundAlphaChannel:
2428     {
2429       CacheView
2430         *image_view;
2431
2432       PixelInfo
2433         background;
2434
2435       ssize_t
2436         y;
2437
2438       /*
2439         Set transparent pixels to background color.
2440       */
2441       if (image->matte == MagickFalse)
2442         break;
2443       if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2444         break;
2445       background=image->background_color;
2446       image_view=AcquireCacheView(image);
2447 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2448       #pragma omp parallel for schedule(dynamic,4) shared(status)
2449 #endif
2450       for (y=0; y < (ssize_t) image->rows; y++)
2451       {
2452         register Quantum
2453           *restrict q;
2454
2455         register ssize_t
2456           x;
2457
2458         if (status == MagickFalse)
2459           continue;
2460         q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
2461           exception);
2462         if (q == (Quantum *) NULL)
2463           {
2464             status=MagickFalse;
2465             continue;
2466           }
2467         for (x=0; x < (ssize_t) image->columns; x++)
2468         {
2469           if (GetPixelAlpha(image,q) == TransparentAlpha)
2470             SetPixelInfoPixel(image,&background,q);
2471           q+=GetPixelChannels(image);
2472         }
2473         if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2474           status=MagickFalse;
2475       }
2476       image_view=DestroyCacheView(image_view);
2477       return(status);
2478     }
2479     case DeactivateAlphaChannel:
2480     {
2481       image->matte=MagickFalse;
2482       break;
2483     }
2484     case ShapeAlphaChannel:
2485     case CopyAlphaChannel:
2486     {
2487       /*
2488         Special usage case for SeparateImage(): copy grayscale color to
2489         the alpha channel.
2490       */
2491       channel_mask=SetPixelChannelMask(image,GrayChannel);
2492       status=SeparateImage(image,exception);
2493       (void) SetPixelChannelMask(image,channel_mask);
2494       image->matte=MagickTrue; /* make sure transparency is now on! */
2495       if (alpha_type == ShapeAlphaChannel)
2496         {
2497           PixelInfo
2498             background;
2499
2500           /*
2501             Reset all color channels to background color.
2502           */
2503           background=image->background_color;
2504           (void) LevelImageColors(image,&background,&background,MagickTrue,
2505             exception);
2506         }
2507       break;
2508     }
2509     case ExtractAlphaChannel:
2510     {
2511       channel_mask=SetPixelChannelMask(image,AlphaChannel);
2512       status=SeparateImage(image,exception);
2513       (void) SetPixelChannelMask(image,channel_mask);
2514       image->matte=MagickFalse;
2515       break;
2516     }
2517     case OpaqueAlphaChannel:
2518     {
2519       status=SetImageAlpha(image,OpaqueAlpha,exception);
2520       image->matte=MagickTrue;
2521       break;
2522     }
2523     case TransparentAlphaChannel:
2524     {
2525       status=SetImageAlpha(image,TransparentAlpha,exception);
2526       image->matte=MagickTrue;
2527       break;
2528     }
2529     case SetAlphaChannel:
2530     {
2531       if (image->matte == MagickFalse)
2532         {
2533           status=SetImageAlpha(image,OpaqueAlpha,exception);
2534           image->matte=MagickTrue;
2535         }
2536       break;
2537     }
2538     case UndefinedAlphaChannel:
2539       break;
2540   }
2541   if (status == MagickFalse)
2542     return(status);
2543   return(SyncImagePixelCache(image,exception));
2544 }
2545 \f
2546 /*
2547 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2548 %                                                                             %
2549 %                                                                             %
2550 %                                                                             %
2551 %   S e t I m a g e B a c k g r o u n d C o l o r                             %
2552 %                                                                             %
2553 %                                                                             %
2554 %                                                                             %
2555 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2556 %
2557 %  SetImageBackgroundColor() initializes the image pixels to the image
2558 %  background color.  The background color is defined by the background_color
2559 %  member of the image structure.
2560 %
2561 %  The format of the SetImage method is:
2562 %
2563 %      MagickBooleanType SetImageBackgroundColor(Image *image,
2564 %        ExceptionInfo *exception)
2565 %
2566 %  A description of each parameter follows:
2567 %
2568 %    o image: the image.
2569 %
2570 %    o exception: return any errors or warnings in this structure.
2571 %
2572 */
2573 MagickExport MagickBooleanType SetImageBackgroundColor(Image *image,
2574   ExceptionInfo *exception)
2575 {
2576   CacheView
2577     *image_view;
2578
2579   MagickBooleanType
2580     status;
2581
2582   PixelInfo
2583     background;
2584
2585   PixelInfo
2586     pixel;
2587
2588   ssize_t
2589     y;
2590
2591   assert(image != (Image *) NULL);
2592   if (image->debug != MagickFalse)
2593     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2594   assert(image->signature == MagickSignature);
2595   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2596     return(MagickFalse);
2597   if (image->background_color.alpha != OpaqueAlpha)
2598     image->matte=MagickTrue;
2599   background=image->background_color;
2600   SetPixelInfo(image,&background,&pixel);
2601   /*
2602     Set image background color.
2603   */
2604   status=MagickTrue;
2605   pixel.black=0;
2606   image_view=AcquireCacheView(image);
2607   for (y=0; y < (ssize_t) image->rows; y++)
2608   {
2609     register Quantum
2610       *restrict q;
2611
2612     register ssize_t
2613       x;
2614
2615     if (status == MagickFalse)
2616       continue;
2617     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2618     if (q == (Quantum *) NULL)
2619       {
2620         status=MagickFalse;
2621         continue;
2622       }
2623     for (x=0; x < (ssize_t) image->columns; x++)
2624     {
2625       SetPixelInfoPixel(image,&background,q);
2626       q+=GetPixelChannels(image);
2627     }
2628     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2629       status=MagickFalse;
2630   }
2631   image_view=DestroyCacheView(image_view);
2632   return(status);
2633 }
2634 \f
2635 /*
2636 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2637 %                                                                             %
2638 %                                                                             %
2639 %                                                                             %
2640 %   S e t I m a g e C o l o r                                                 %
2641 %                                                                             %
2642 %                                                                             %
2643 %                                                                             %
2644 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2645 %
2646 %  SetImageColor() set the entire image canvas to the specified color.
2647 %
2648 %  The format of the SetImageColor method is:
2649 %
2650 %      MagickBooleanType SetImageColor(Image *image,const PixelInfo *color,
2651 %        ExeptionInfo *exception)
2652 %
2653 %  A description of each parameter follows:
2654 %
2655 %    o image: the image.
2656 %
2657 %    o background: the image color.
2658 %
2659 %    o exception: return any errors or warnings in this structure.
2660 %
2661 */
2662 MagickExport MagickBooleanType SetImageColor(Image *image,
2663   const PixelInfo *color,ExceptionInfo *exception)
2664 {
2665   CacheView
2666     *image_view;
2667
2668   MagickBooleanType
2669     status;
2670
2671   ssize_t
2672     y;
2673
2674   assert(image != (Image *) NULL);
2675   if (image->debug != MagickFalse)
2676     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2677   assert(image->signature == MagickSignature);
2678   assert(color != (const PixelInfo *) NULL);
2679   image->colorspace=color->colorspace;
2680   image->matte=color->matte;
2681   image->fuzz=color->fuzz;
2682   image->depth=color->depth;
2683   status=MagickTrue;
2684   image_view=AcquireCacheView(image);
2685 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2686   #pragma omp parallel for schedule(dynamic,4) shared(status)
2687 #endif
2688   for (y=0; y < (ssize_t) image->rows; y++)
2689   {
2690     register Quantum
2691       *restrict q;
2692
2693     register ssize_t
2694       x;
2695
2696     if (status == MagickFalse)
2697       continue;
2698     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2699     if (q == (Quantum *) NULL)
2700       {
2701         status=MagickFalse;
2702         continue;
2703       }
2704     for (x=0; x < (ssize_t) image->columns; x++)
2705     {
2706       SetPixelInfoPixel(image,color,q);
2707       q+=GetPixelChannels(image);
2708     }
2709     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2710       status=MagickFalse;
2711   }
2712   image_view=DestroyCacheView(image_view);
2713   return(status);
2714 }
2715 \f
2716 /*
2717 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2718 %                                                                             %
2719 %                                                                             %
2720 %                                                                             %
2721 %   S e t I m a g e S t o r a g e C l a s s                                   %
2722 %                                                                             %
2723 %                                                                             %
2724 %                                                                             %
2725 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2726 %
2727 %  SetImageStorageClass() sets the image class: DirectClass for true color
2728 %  images or PseudoClass for colormapped images.
2729 %
2730 %  The format of the SetImageStorageClass method is:
2731 %
2732 %      MagickBooleanType SetImageStorageClass(Image *image,
2733 %        const ClassType storage_class,ExceptionInfo *exception)
2734 %
2735 %  A description of each parameter follows:
2736 %
2737 %    o image: the image.
2738 %
2739 %    o storage_class:  The image class.
2740 %
2741 %    o exception: return any errors or warnings in this structure.
2742 %
2743 */
2744 MagickExport MagickBooleanType SetImageStorageClass(Image *image,
2745   const ClassType storage_class,ExceptionInfo *exception)
2746 {
2747   image->storage_class=storage_class;
2748   return(SyncImagePixelCache(image,exception));
2749 }
2750 \f
2751 /*
2752 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2753 %                                                                             %
2754 %                                                                             %
2755 %                                                                             %
2756 %   S e t I m a g e C l i p M a s k                                           %
2757 %                                                                             %
2758 %                                                                             %
2759 %                                                                             %
2760 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2761 %
2762 %  SetImageClipMask() associates a clip path with the image.  The clip path
2763 %  must be the same dimensions as the image.  Set any pixel component of
2764 %  the clip path to TransparentAlpha to prevent that corresponding image
2765 %  pixel component from being updated when SyncAuthenticPixels() is applied.
2766 %
2767 %  The format of the SetImageClipMask method is:
2768 %
2769 %      MagickBooleanType SetImageClipMask(Image *image,const Image *clip_mask,
2770 %        ExceptionInfo *exception)
2771 %
2772 %  A description of each parameter follows:
2773 %
2774 %    o image: the image.
2775 %
2776 %    o clip_mask: the image clip path.
2777 %
2778 %    o exception: return any errors or warnings in this structure.
2779 %
2780 */
2781 MagickExport MagickBooleanType SetImageClipMask(Image *image,
2782   const Image *clip_mask,ExceptionInfo *exception)
2783 {
2784   assert(image != (Image *) NULL);
2785   if (image->debug != MagickFalse)
2786     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2787   assert(image->signature == MagickSignature);
2788   if (clip_mask != (const Image *) NULL)
2789     if ((clip_mask->columns != image->columns) ||
2790         (clip_mask->rows != image->rows))
2791       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
2792   if (image->clip_mask != (Image *) NULL)
2793     image->clip_mask=DestroyImage(image->clip_mask);
2794   image->clip_mask=NewImageList();
2795   if (clip_mask == (Image *) NULL)
2796     return(MagickTrue);
2797   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2798     return(MagickFalse);
2799   image->clip_mask=CloneImage(clip_mask,0,0,MagickTrue,exception);
2800   if (image->clip_mask == (Image *) NULL)
2801     return(MagickFalse);
2802   return(MagickTrue);
2803 }
2804 \f
2805 /*
2806 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2807 %                                                                             %
2808 %                                                                             %
2809 %                                                                             %
2810 %   S e t I m a g e E x t e n t                                               %
2811 %                                                                             %
2812 %                                                                             %
2813 %                                                                             %
2814 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2815 %
2816 %  SetImageExtent() sets the image size (i.e. columns & rows).
2817 %
2818 %  The format of the SetImageExtent method is:
2819 %
2820 %      MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2821 %        const size_t rows,ExceptionInfo *exception)
2822 %
2823 %  A description of each parameter follows:
2824 %
2825 %    o image: the image.
2826 %
2827 %    o columns:  The image width in pixels.
2828 %
2829 %    o rows:  The image height in pixels.
2830 %
2831 %    o exception: return any errors or warnings in this structure.
2832 %
2833 */
2834 MagickExport MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2835   const size_t rows,ExceptionInfo *exception)
2836 {
2837   if ((columns == 0) || (rows == 0))
2838     return(MagickFalse);
2839   image->columns=columns;
2840   image->rows=rows;
2841   return(SyncImagePixelCache(image,exception));
2842 }
2843 \f
2844 /*
2845 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2846 %                                                                             %
2847 %                                                                             %
2848 %                                                                             %
2849 +   S e t I m a g e I n f o                                                   %
2850 %                                                                             %
2851 %                                                                             %
2852 %                                                                             %
2853 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2854 %
2855 %  SetImageInfo() initializes the `magick' field of the ImageInfo structure.
2856 %  It is set to a type of image format based on the prefix or suffix of the
2857 %  filename.  For example, `ps:image' returns PS indicating a Postscript image.
2858 %  JPEG is returned for this filename: `image.jpg'.  The filename prefix has
2859 %  precendence over the suffix.  Use an optional index enclosed in brackets
2860 %  after a file name to specify a desired scene of a multi-resolution image
2861 %  format like Photo CD (e.g. img0001.pcd[4]).  A True (non-zero) return value
2862 %  indicates success.
2863 %
2864 %  The format of the SetImageInfo method is:
2865 %
2866 %      MagickBooleanType SetImageInfo(ImageInfo *image_info,
2867 %        const unsigned int frames,ExceptionInfo *exception)
2868 %
2869 %  A description of each parameter follows:
2870 %
2871 %    o image_info: the image info.
2872 %
2873 %    o frames: the number of images you intend to write.
2874 %
2875 %    o exception: return any errors or warnings in this structure.
2876 %
2877 */
2878 MagickExport MagickBooleanType SetImageInfo(ImageInfo *image_info,
2879   const unsigned int frames,ExceptionInfo *exception)
2880 {
2881   char
2882     extension[MaxTextExtent],
2883     filename[MaxTextExtent],
2884     magic[MaxTextExtent],
2885     *q,
2886     subimage[MaxTextExtent];
2887
2888   const MagicInfo
2889     *magic_info;
2890
2891   const MagickInfo
2892     *magick_info;
2893
2894   ExceptionInfo
2895     *sans_exception;
2896
2897   Image
2898     *image;
2899
2900   MagickBooleanType
2901     status;
2902
2903   register const char
2904     *p;
2905
2906   ssize_t
2907     count;
2908
2909   unsigned char
2910     magick[2*MaxTextExtent];
2911
2912   /*
2913     Look for 'image.format' in filename.
2914   */
2915   assert(image_info != (ImageInfo *) NULL);
2916   assert(image_info->signature == MagickSignature);
2917   if (image_info->debug != MagickFalse)
2918     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2919       image_info->filename);
2920   *subimage='\0';
2921   if (frames == 0)
2922     {
2923       GetPathComponent(image_info->filename,SubimagePath,subimage);
2924       if (*subimage != '\0')
2925         {
2926           /*
2927             Look for scene specification (e.g. img0001.pcd[4]).
2928           */
2929           if (IsSceneGeometry(subimage,MagickFalse) == MagickFalse)
2930             {
2931               if (IsGeometry(subimage) != MagickFalse)
2932                 (void) CloneString(&image_info->extract,subimage);
2933             }
2934           else
2935             {
2936               size_t
2937                 first,
2938                 last;
2939
2940               (void) CloneString(&image_info->scenes,subimage);
2941               image_info->scene=StringToUnsignedLong(image_info->scenes);
2942               image_info->number_scenes=image_info->scene;
2943               p=image_info->scenes;
2944               for (q=(char *) image_info->scenes; *q != '\0'; p++)
2945               {
2946                 while ((isspace((int) ((unsigned char) *p)) != 0) ||
2947                        (*p == ','))
2948                   p++;
2949                 first=(size_t) strtol(p,&q,10);
2950                 last=first;
2951                 while (isspace((int) ((unsigned char) *q)) != 0)
2952                   q++;
2953                 if (*q == '-')
2954                   last=(size_t) strtol(q+1,&q,10);
2955                 if (first > last)
2956                   Swap(first,last);
2957                 if (first < image_info->scene)
2958                   image_info->scene=first;
2959                 if (last > image_info->number_scenes)
2960                   image_info->number_scenes=last;
2961                 p=q;
2962               }
2963               image_info->number_scenes-=image_info->scene-1;
2964             }
2965         }
2966     }
2967   *extension='\0';
2968   GetPathComponent(image_info->filename,ExtensionPath,extension);
2969 #if defined(MAGICKCORE_ZLIB_DELEGATE)
2970   if (*extension != '\0')
2971     if ((LocaleCompare(extension,"gz") == 0) ||
2972         (LocaleCompare(extension,"Z") == 0) ||
2973         (LocaleCompare(extension,"wmz") == 0))
2974       {
2975         char
2976           path[MaxTextExtent];
2977
2978         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2979         path[strlen(path)-strlen(extension)-1]='\0';
2980         GetPathComponent(path,ExtensionPath,extension);
2981       }
2982 #endif
2983 #if defined(MAGICKCORE_BZLIB_DELEGATE)
2984   if (*extension != '\0')
2985     if (LocaleCompare(extension,"bz2") == 0)
2986       {
2987         char
2988           path[MaxTextExtent];
2989
2990         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2991         path[strlen(path)-strlen(extension)-1]='\0';
2992         GetPathComponent(path,ExtensionPath,extension);
2993       }
2994 #endif
2995   image_info->affirm=MagickFalse;
2996   sans_exception=AcquireExceptionInfo();
2997   if (*extension != '\0')
2998     {
2999       MagickFormatType
3000         format_type;
3001
3002       register ssize_t
3003         i;
3004
3005       static const char
3006         *format_type_formats[] =
3007         {
3008           "AUTOTRACE",
3009           "BROWSE",
3010           "DCRAW",
3011           "EDIT",
3012           "EPHEMERAL",
3013           "LAUNCH",
3014           "MPEG:DECODE",
3015           "MPEG:ENCODE",
3016           "PRINT",
3017           "PS:ALPHA",
3018           "PS:CMYK",
3019           "PS:COLOR",
3020           "PS:GRAY",
3021           "PS:MONO",
3022           "SCAN",
3023           "SHOW",
3024           "WIN",
3025           (char *) NULL
3026         };
3027
3028       /*
3029         User specified image format.
3030       */
3031       (void) CopyMagickString(magic,extension,MaxTextExtent);
3032       LocaleUpper(magic);
3033       /*
3034         Look for explicit image formats.
3035       */
3036       format_type=UndefinedFormatType;
3037       i=0;
3038       while ((format_type == UndefinedFormatType) &&
3039              (format_type_formats[i] != (char *) NULL))
3040       {
3041         if ((*magic == *format_type_formats[i]) &&
3042             (LocaleCompare(magic,format_type_formats[i]) == 0))
3043           format_type=ExplicitFormatType;
3044         i++;
3045       }
3046       magick_info=GetMagickInfo(magic,sans_exception);
3047       if ((magick_info != (const MagickInfo *) NULL) &&
3048           (magick_info->format_type != UndefinedFormatType))
3049         format_type=magick_info->format_type;
3050       if (format_type == UndefinedFormatType)
3051         (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3052       else
3053         if (format_type == ExplicitFormatType)
3054           {
3055             image_info->affirm=MagickTrue;
3056             (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3057           }
3058       if (LocaleCompare(magic,"RGB") == 0)
3059         image_info->affirm=MagickFalse;  /* maybe SGI disguised as RGB */
3060     }
3061   /*
3062     Look for explicit 'format:image' in filename.
3063   */
3064   *magic='\0';
3065   GetPathComponent(image_info->filename,MagickPath,magic);
3066   if (*magic == '\0')
3067     (void) CopyMagickString(magic,image_info->magick,MaxTextExtent);
3068   else
3069     {
3070       /*
3071         User specified image format.
3072       */
3073       LocaleUpper(magic);
3074       if (IsMagickConflict(magic) == MagickFalse)
3075         {
3076           (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3077           if (LocaleCompare(magic,"EPHEMERAL") != 0)
3078             image_info->affirm=MagickTrue;
3079           else
3080             image_info->temporary=MagickTrue;
3081         }
3082     }
3083   magick_info=GetMagickInfo(magic,sans_exception);
3084   sans_exception=DestroyExceptionInfo(sans_exception);
3085   if ((magick_info == (const MagickInfo *) NULL) ||
3086       (GetMagickEndianSupport(magick_info) == MagickFalse))
3087     image_info->endian=UndefinedEndian;
3088   GetPathComponent(image_info->filename,CanonicalPath,filename);
3089   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3090   if ((image_info->adjoin != MagickFalse) && (frames > 1))
3091     {
3092       /*
3093         Test for multiple image support (e.g. image%02d.png).
3094       */
3095       (void) InterpretImageFilename(image_info,(Image *) NULL,
3096         image_info->filename,(int) image_info->scene,filename,exception);
3097       if ((LocaleCompare(filename,image_info->filename) != 0) &&
3098           (strchr(filename,'%') == (char *) NULL))
3099         image_info->adjoin=MagickFalse;
3100     }
3101   if ((image_info->adjoin != MagickFalse) && (frames > 0))
3102     {
3103       /*
3104         Some image formats do not support multiple frames per file.
3105       */
3106       magick_info=GetMagickInfo(magic,exception);
3107       if (magick_info != (const MagickInfo *) NULL)
3108         if (GetMagickAdjoin(magick_info) == MagickFalse)
3109           image_info->adjoin=MagickFalse;
3110     }
3111   if (image_info->affirm != MagickFalse)
3112     return(MagickTrue);
3113   if (frames == 0)
3114     {
3115       /*
3116         Determine the image format from the first few bytes of the file.
3117       */
3118       image=AcquireImage(image_info,exception);
3119       (void) CopyMagickString(image->filename,image_info->filename,
3120         MaxTextExtent);
3121       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3122       if (status == MagickFalse)
3123         {
3124           image=DestroyImage(image);
3125           return(MagickFalse);
3126         }
3127       if ((IsBlobSeekable(image) == MagickFalse) ||
3128           (IsBlobExempt(image) != MagickFalse))
3129         {
3130           /*
3131             Copy standard input or pipe to temporary file.
3132           */
3133           *filename='\0';
3134           status=ImageToFile(image,filename,exception);
3135           (void) CloseBlob(image);
3136           if (status == MagickFalse)
3137             {
3138               image=DestroyImage(image);
3139               return(MagickFalse);
3140             }
3141           SetImageInfoFile(image_info,(FILE *) NULL);
3142           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
3143           status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3144           if (status == MagickFalse)
3145             {
3146               image=DestroyImage(image);
3147               return(MagickFalse);
3148             }
3149           (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3150           image_info->temporary=MagickTrue;
3151         }
3152       (void) ResetMagickMemory(magick,0,sizeof(magick));
3153       count=ReadBlob(image,2*MaxTextExtent,magick);
3154       (void) CloseBlob(image);
3155       image=DestroyImage(image);
3156       /*
3157         Check magic.xml configuration file.
3158       */
3159       sans_exception=AcquireExceptionInfo();
3160       magic_info=GetMagicInfo(magick,(size_t) count,sans_exception);
3161       if ((magic_info != (const MagicInfo *) NULL) &&
3162           (GetMagicName(magic_info) != (char *) NULL))
3163         {
3164           (void) CopyMagickString(image_info->magick,GetMagicName(magic_info),
3165             MaxTextExtent);
3166           magick_info=GetMagickInfo(image_info->magick,sans_exception);
3167           if ((magick_info == (const MagickInfo *) NULL) ||
3168               (GetMagickEndianSupport(magick_info) == MagickFalse))
3169             image_info->endian=UndefinedEndian;
3170           sans_exception=DestroyExceptionInfo(sans_exception);
3171           return(MagickTrue);
3172         }
3173       magick_info=GetMagickInfo(image_info->magick,sans_exception);
3174       if ((magick_info == (const MagickInfo *) NULL) ||
3175           (GetMagickEndianSupport(magick_info) == MagickFalse))
3176         image_info->endian=UndefinedEndian;
3177       sans_exception=DestroyExceptionInfo(sans_exception);
3178     }
3179   return(MagickTrue);
3180 }
3181 \f
3182 /*
3183 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3184 %                                                                             %
3185 %                                                                             %
3186 %                                                                             %
3187 %   S e t I m a g e I n f o B l o b                                           %
3188 %                                                                             %
3189 %                                                                             %
3190 %                                                                             %
3191 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3192 %
3193 %  SetImageInfoBlob() sets the image info blob member.
3194 %
3195 %  The format of the SetImageInfoBlob method is:
3196 %
3197 %      void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3198 %        const size_t length)
3199 %
3200 %  A description of each parameter follows:
3201 %
3202 %    o image_info: the image info.
3203 %
3204 %    o blob: the blob.
3205 %
3206 %    o length: the blob length.
3207 %
3208 */
3209 MagickExport void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3210   const size_t length)
3211 {
3212   assert(image_info != (ImageInfo *) NULL);
3213   assert(image_info->signature == MagickSignature);
3214   if (image_info->debug != MagickFalse)
3215     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3216       image_info->filename);
3217   image_info->blob=(void *) blob;
3218   image_info->length=length;
3219 }
3220 \f
3221 /*
3222 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3223 %                                                                             %
3224 %                                                                             %
3225 %                                                                             %
3226 %   S e t I m a g e I n f o F i l e                                           %
3227 %                                                                             %
3228 %                                                                             %
3229 %                                                                             %
3230 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3231 %
3232 %  SetImageInfoFile() sets the image info file member.
3233 %
3234 %  The format of the SetImageInfoFile method is:
3235 %
3236 %      void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3237 %
3238 %  A description of each parameter follows:
3239 %
3240 %    o image_info: the image info.
3241 %
3242 %    o file: the file.
3243 %
3244 */
3245 MagickExport void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3246 {
3247   assert(image_info != (ImageInfo *) NULL);
3248   assert(image_info->signature == MagickSignature);
3249   if (image_info->debug != MagickFalse)
3250     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3251       image_info->filename);
3252   image_info->file=file;
3253 }
3254 \f
3255 /*
3256 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3257 %                                                                             %
3258 %                                                                             %
3259 %                                                                             %
3260 %   S e t I m a g e M a s k                                                   %
3261 %                                                                             %
3262 %                                                                             %
3263 %                                                                             %
3264 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3265 %
3266 %  SetImageMask() associates a mask with the image.  The mask must be the same
3267 %  dimensions as the image.
3268 %
3269 %  The format of the SetImageMask method is:
3270 %
3271 %      MagickBooleanType SetImageMask(Image *image,const Image *mask,
3272 %        ExceptionInfo *exception)
3273 %
3274 %  A description of each parameter follows:
3275 %
3276 %    o image: the image.
3277 %
3278 %    o mask: the image mask.
3279 %
3280 %    o exception: return any errors or warnings in this structure.
3281 %
3282 */
3283 MagickExport MagickBooleanType SetImageMask(Image *image,
3284   const Image *mask,ExceptionInfo *exception)
3285 {
3286   assert(image != (Image *) NULL);
3287   if (image->debug != MagickFalse)
3288     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3289   assert(image->signature == MagickSignature);
3290   if (mask != (const Image *) NULL)
3291     if ((mask->columns != image->columns) || (mask->rows != image->rows))
3292       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
3293   if (image->mask != (Image *) NULL)
3294     image->mask=DestroyImage(image->mask);
3295   image->mask=NewImageList();
3296   if (mask == (Image *) NULL)
3297     return(MagickTrue);
3298   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
3299     return(MagickFalse);
3300   image->mask=CloneImage(mask,0,0,MagickTrue,exception);
3301   if (image->mask == (Image *) NULL)
3302     return(MagickFalse);
3303   return(MagickTrue);
3304 }
3305 \f
3306 /*
3307 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3308 %                                                                             %
3309 %                                                                             %
3310 %                                                                             %
3311 %     S e t I m a g e A l p h a                                               %
3312 %                                                                             %
3313 %                                                                             %
3314 %                                                                             %
3315 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3316 %
3317 %  SetImageAlpha() sets the alpha levels of the image.
3318 %
3319 %  The format of the SetImageAlpha method is:
3320 %
3321 %      MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3322 %        ExceptionInfo *exception)
3323 %
3324 %  A description of each parameter follows:
3325 %
3326 %    o image: the image.
3327 %
3328 %    o Alpha: the level of transparency: 0 is fully opaque and QuantumRange is
3329 %      fully transparent.
3330 %
3331 */
3332 MagickExport MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3333   ExceptionInfo *exception)
3334 {
3335   CacheView
3336     *image_view;
3337
3338   MagickBooleanType
3339     status;
3340
3341   ssize_t
3342     y;
3343
3344   assert(image != (Image *) NULL);
3345   if (image->debug != MagickFalse)
3346     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3347   assert(image->signature == MagickSignature);
3348   image->matte=alpha != OpaqueAlpha ? MagickTrue : MagickFalse;
3349   status=MagickTrue;
3350   image_view=AcquireCacheView(image);
3351 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3352   #pragma omp parallel for schedule(dynamic,4) shared(status)
3353 #endif
3354   for (y=0; y < (ssize_t) image->rows; y++)
3355   {
3356     register Quantum
3357       *restrict q;
3358
3359     register ssize_t
3360       x;
3361
3362     if (status == MagickFalse)
3363       continue;
3364     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3365     if (q == (Quantum *) NULL)
3366       {
3367         status=MagickFalse;
3368         continue;
3369       }
3370     for (x=0; x < (ssize_t) image->columns; x++)
3371     {
3372       SetPixelAlpha(image,alpha,q);
3373       q+=GetPixelChannels(image);
3374     }
3375     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3376       status=MagickFalse;
3377   }
3378   image_view=DestroyCacheView(image_view);
3379   return(status);
3380 }
3381 \f
3382 /*
3383 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3384 %                                                                             %
3385 %                                                                             %
3386 %                                                                             %
3387 %   S e t I m a g e T y p e                                                   %
3388 %                                                                             %
3389 %                                                                             %
3390 %                                                                             %
3391 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3392 %
3393 %  SetImageType() sets the type of image.  Choose from these types:
3394 %
3395 %        Bilevel        Grayscale       GrayscaleMatte
3396 %        Palette        PaletteMatte    TrueColor
3397 %        TrueColorMatte ColorSeparation ColorSeparationMatte
3398 %        OptimizeType
3399 %
3400 %  The format of the SetImageType method is:
3401 %
3402 %      MagickBooleanType SetImageType(Image *image,const ImageType type,
3403 %        ExceptionInfo *exception)
3404 %
3405 %  A description of each parameter follows:
3406 %
3407 %    o image: the image.
3408 %
3409 %    o type: Image type.
3410 %
3411 %    o exception: return any errors or warnings in this structure.
3412 %
3413 */
3414 MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type,
3415   ExceptionInfo *exception)
3416 {
3417   const char
3418     *artifact;
3419
3420   ImageInfo
3421     *image_info;
3422
3423   MagickBooleanType
3424     status;
3425
3426   QuantizeInfo
3427     *quantize_info;
3428
3429   assert(image != (Image *) NULL);
3430   if (image->debug != MagickFalse)
3431     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3432   assert(image->signature == MagickSignature);
3433   status=MagickTrue;
3434   image_info=AcquireImageInfo();
3435   image_info->dither=image->dither;
3436   artifact=GetImageArtifact(image,"dither");
3437   if (artifact != (const char *) NULL)
3438     (void) SetImageOption(image_info,"dither",artifact);
3439   switch (type)
3440   {
3441     case BilevelType:
3442     {
3443       if (IsImageGray(image,exception) == MagickFalse)
3444         status=TransformImageColorspace(image,GRAYColorspace,exception);
3445       if (IsImageMonochrome(image,exception) == MagickFalse)
3446         {
3447           quantize_info=AcquireQuantizeInfo(image_info);
3448           quantize_info->number_colors=2;
3449           quantize_info->colorspace=GRAYColorspace;
3450           status=QuantizeImage(quantize_info,image,exception);
3451           quantize_info=DestroyQuantizeInfo(quantize_info);
3452         }
3453       image->matte=MagickFalse;
3454       break;
3455     }
3456     case GrayscaleType:
3457     {
3458       if (IsImageGray(image,exception) == MagickFalse)
3459         status=TransformImageColorspace(image,GRAYColorspace,exception);
3460       image->matte=MagickFalse;
3461       break;
3462     }
3463     case GrayscaleMatteType:
3464     {
3465       if (IsImageGray(image,exception) == MagickFalse)
3466         status=TransformImageColorspace(image,GRAYColorspace,exception);
3467       if (image->matte == MagickFalse)
3468         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3469       break;
3470     }
3471     case PaletteType:
3472     {
3473       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3474         status=TransformImageColorspace(image,RGBColorspace,exception);
3475       if ((image->storage_class == DirectClass) || (image->colors > 256))
3476         {
3477           quantize_info=AcquireQuantizeInfo(image_info);
3478           quantize_info->number_colors=256;
3479           status=QuantizeImage(quantize_info,image,exception);
3480           quantize_info=DestroyQuantizeInfo(quantize_info);
3481         }
3482       image->matte=MagickFalse;
3483       break;
3484     }
3485     case PaletteBilevelMatteType:
3486     {
3487       ChannelType
3488         channel_mask;
3489
3490       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3491         status=TransformImageColorspace(image,RGBColorspace,exception);
3492       if (image->matte == MagickFalse)
3493         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3494       channel_mask=SetPixelChannelMask(image,AlphaChannel);
3495       (void) BilevelImage(image,(double) QuantumRange/2.0,exception);
3496       (void) SetPixelChannelMask(image,channel_mask);
3497       quantize_info=AcquireQuantizeInfo(image_info);
3498       status=QuantizeImage(quantize_info,image,exception);
3499       quantize_info=DestroyQuantizeInfo(quantize_info);
3500       break;
3501     }
3502     case PaletteMatteType:
3503     {
3504       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3505         status=TransformImageColorspace(image,RGBColorspace,exception);
3506       if (image->matte == MagickFalse)
3507         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3508       quantize_info=AcquireQuantizeInfo(image_info);
3509       quantize_info->colorspace=TransparentColorspace;
3510       status=QuantizeImage(quantize_info,image,exception);
3511       quantize_info=DestroyQuantizeInfo(quantize_info);
3512       break;
3513     }
3514     case TrueColorType:
3515     {
3516       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3517         status=TransformImageColorspace(image,RGBColorspace,exception);
3518       if (image->storage_class != DirectClass)
3519         status=SetImageStorageClass(image,DirectClass,exception);
3520       image->matte=MagickFalse;
3521       break;
3522     }
3523     case TrueColorMatteType:
3524     {
3525       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3526         status=TransformImageColorspace(image,RGBColorspace,exception);
3527       if (image->storage_class != DirectClass)
3528         status=SetImageStorageClass(image,DirectClass,exception);
3529       if (image->matte == MagickFalse)
3530         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3531       break;
3532     }
3533     case ColorSeparationType:
3534     {
3535       if (image->colorspace != CMYKColorspace)
3536         {
3537           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3538             status=TransformImageColorspace(image,RGBColorspace,exception);
3539           status=TransformImageColorspace(image,CMYKColorspace,exception);
3540         }
3541       if (image->storage_class != DirectClass)
3542         status=SetImageStorageClass(image,DirectClass,exception);
3543       image->matte=MagickFalse;
3544       break;
3545     }
3546     case ColorSeparationMatteType:
3547     {
3548       if (image->colorspace != CMYKColorspace)
3549         {
3550           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3551             status=TransformImageColorspace(image,RGBColorspace,exception);
3552           status=TransformImageColorspace(image,CMYKColorspace,exception);
3553         }
3554       if (image->storage_class != DirectClass)
3555         status=SetImageStorageClass(image,DirectClass,exception);
3556       if (image->matte == MagickFalse)
3557         status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3558       break;
3559     }
3560     case OptimizeType:
3561     case UndefinedType:
3562       break;
3563   }
3564   image->type=type;
3565   image_info=DestroyImageInfo(image_info);
3566   return(status);
3567 }
3568 \f
3569 /*
3570 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3571 %                                                                             %
3572 %                                                                             %
3573 %                                                                             %
3574 %   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                       %
3575 %                                                                             %
3576 %                                                                             %
3577 %                                                                             %
3578 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3579 %
3580 %  SetImageVirtualPixelMethod() sets the "virtual pixels" method for the
3581 %  image and returns the previous setting.  A virtual pixel is any pixel access
3582 %  that is outside the boundaries of the image cache.
3583 %
3584 %  The format of the SetImageVirtualPixelMethod() method is:
3585 %
3586 %      VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3587 %        const VirtualPixelMethod virtual_pixel_method)
3588 %
3589 %  A description of each parameter follows:
3590 %
3591 %    o image: the image.
3592 %
3593 %    o virtual_pixel_method: choose the type of virtual pixel.
3594 %
3595 */
3596 MagickExport VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3597   const VirtualPixelMethod virtual_pixel_method)
3598 {
3599   assert(image != (const Image *) NULL);
3600   assert(image->signature == MagickSignature);
3601   if (image->debug != MagickFalse)
3602     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3603   return(SetPixelCacheVirtualMethod(image,virtual_pixel_method));
3604 }
3605 \f
3606 /*
3607 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3608 %                                                                             %
3609 %                                                                             %
3610 %                                                                             %
3611 %     S m u s h I m a g e s                                                   %
3612 %                                                                             %
3613 %                                                                             %
3614 %                                                                             %
3615 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3616 %
3617 %  SmushImages() takes all images from the current image pointer to the end
3618 %  of the image list and smushes them to each other top-to-bottom if the
3619 %  stack parameter is true, otherwise left-to-right.
3620 %
3621 %  The current gravity setting now effects how the image is justified in the
3622 %  final image.
3623 %
3624 %  The format of the SmushImages method is:
3625 %
3626 %      Image *SmushImages(const Image *images,const MagickBooleanType stack,
3627 %        ExceptionInfo *exception)
3628 %
3629 %  A description of each parameter follows:
3630 %
3631 %    o images: the image sequence.
3632 %
3633 %    o stack: A value other than 0 stacks the images top-to-bottom.
3634 %
3635 %    o offset: minimum distance in pixels between images.
3636 %
3637 %    o exception: return any errors or warnings in this structure.
3638 %
3639 */
3640
3641 static ssize_t SmushXGap(const Image *smush_image,const Image *images,
3642   const ssize_t offset,ExceptionInfo *exception)
3643 {
3644   CacheView
3645     *left_view,
3646     *right_view;
3647
3648   const Image
3649     *left_image,
3650     *right_image;
3651
3652   RectangleInfo
3653     left_geometry,
3654     right_geometry;
3655
3656   register const Quantum
3657     *p;
3658
3659   register ssize_t
3660     i,
3661     y;
3662
3663   size_t
3664     gap;
3665
3666   ssize_t
3667     x;
3668
3669   if (images->previous == (Image *) NULL)
3670     return(0);
3671   right_image=images;
3672   SetGeometry(smush_image,&right_geometry);
3673   GravityAdjustGeometry(right_image->columns,right_image->rows,
3674     right_image->gravity,&right_geometry);
3675   left_image=images->previous;
3676   SetGeometry(smush_image,&left_geometry);
3677   GravityAdjustGeometry(left_image->columns,left_image->rows,
3678     left_image->gravity,&left_geometry);
3679   gap=right_image->columns;
3680   left_view=AcquireCacheView(left_image);
3681   right_view=AcquireCacheView(right_image);
3682   for (y=0; y < (ssize_t) smush_image->rows; y++)
3683   {
3684     for (x=(ssize_t) left_image->columns-1; x > 0; x--)
3685     {
3686       p=GetCacheViewVirtualPixels(left_view,x,left_geometry.y+y,1,1,exception);
3687       if ((p == (const Quantum *) NULL) ||
3688           (GetPixelAlpha(left_image,p) != TransparentAlpha) ||
3689           ((left_image->columns-x-1) >= gap))
3690         break;
3691     }
3692     i=(ssize_t) left_image->columns-x-1;
3693     for (x=0; x < (ssize_t) right_image->columns; x++)
3694     {
3695       p=GetCacheViewVirtualPixels(right_view,x,right_geometry.y+y,1,1,
3696         exception);
3697       if ((p == (const Quantum *) NULL) ||
3698           (GetPixelAlpha(right_image,p) != TransparentAlpha) ||
3699           ((x+i) >= (ssize_t) gap))
3700         break;
3701     }
3702     if ((x+i) < (ssize_t) gap)
3703       gap=(size_t) (x+i);
3704   }
3705   right_view=DestroyCacheView(right_view);
3706   left_view=DestroyCacheView(left_view);
3707   if (y < (ssize_t) smush_image->rows)
3708     return(offset);
3709   return((ssize_t) gap-offset);
3710 }
3711
3712 static ssize_t SmushYGap(const Image *smush_image,const Image *images,
3713   const ssize_t offset,ExceptionInfo *exception)
3714 {
3715   CacheView
3716     *bottom_view,
3717     *top_view;
3718
3719   const Image
3720     *bottom_image,
3721     *top_image;
3722
3723   RectangleInfo
3724     bottom_geometry,
3725     top_geometry;
3726
3727   register const Quantum
3728     *p;
3729
3730   register ssize_t
3731     i,
3732     x;
3733
3734   size_t
3735     gap;
3736
3737   ssize_t
3738     y;
3739
3740   if (images->previous == (Image *) NULL)
3741     return(0);
3742   bottom_image=images;
3743   SetGeometry(smush_image,&bottom_geometry);
3744   GravityAdjustGeometry(bottom_image->columns,bottom_image->rows,
3745     bottom_image->gravity,&bottom_geometry);
3746   top_image=images->previous;
3747   SetGeometry(smush_image,&top_geometry);
3748   GravityAdjustGeometry(top_image->columns,top_image->rows,top_image->gravity,
3749     &top_geometry);
3750   gap=bottom_image->rows;
3751   top_view=AcquireCacheView(top_image);
3752   bottom_view=AcquireCacheView(bottom_image);
3753   for (x=0; x < (ssize_t) smush_image->columns; x++)
3754   {
3755     for (y=(ssize_t) top_image->rows-1; y > 0; y--)
3756     {
3757       p=GetCacheViewVirtualPixels(top_view,top_geometry.x+x,y,1,1,exception);
3758       if ((p == (const Quantum *) NULL) ||
3759           (GetPixelAlpha(top_image,p) != TransparentAlpha) ||
3760           ((top_image->rows-y-1) >= gap))
3761         break;
3762     }
3763     i=(ssize_t) top_image->rows-y-1;
3764     for (y=0; y < (ssize_t) bottom_image->rows; y++)
3765     {
3766       p=GetCacheViewVirtualPixels(bottom_view,bottom_geometry.x+x,y,1,1,
3767         exception);
3768       if ((p == (const Quantum *) NULL) ||
3769           (GetPixelAlpha(bottom_image,p) != TransparentAlpha) ||
3770           ((y+i) >= (ssize_t) gap))
3771         break;
3772     }
3773     if ((y+i) < (ssize_t) gap)
3774       gap=(size_t) (y+i);
3775   }
3776   bottom_view=DestroyCacheView(bottom_view);
3777   top_view=DestroyCacheView(top_view);
3778   if (x < (ssize_t) smush_image->columns)
3779     return(offset);
3780   return((ssize_t) gap-offset);
3781 }
3782
3783 MagickExport Image *SmushImages(const Image *images,
3784   const MagickBooleanType stack,const ssize_t offset,ExceptionInfo *exception)
3785 {
3786 #define SmushImageTag  "Smush/Image"
3787
3788   CacheView
3789     *smush_view;
3790
3791   const Image
3792     *image;
3793
3794   Image
3795     *smush_image;
3796
3797   MagickBooleanType
3798     matte,
3799     proceed,
3800     status;
3801
3802   MagickOffsetType
3803     n;
3804
3805   RectangleInfo
3806     geometry;
3807
3808   register const Image
3809     *next;
3810
3811   size_t
3812     height,
3813     number_images,
3814     width;
3815
3816   ssize_t
3817     x_offset,
3818     y_offset;
3819
3820   /*
3821     Compute maximum area of smushed area.
3822   */
3823   assert(images != (Image *) NULL);
3824   assert(images->signature == MagickSignature);
3825   if (images->debug != MagickFalse)
3826     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
3827   assert(exception != (ExceptionInfo *) NULL);
3828   assert(exception->signature == MagickSignature);
3829   image=images;
3830   matte=image->matte;
3831   number_images=1;
3832   width=image->columns;
3833   height=image->rows;
3834   next=GetNextImageInList(image);
3835   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
3836   {
3837     if (next->matte != MagickFalse)
3838       matte=MagickTrue;
3839     number_images++;
3840     if (stack != MagickFalse)
3841       {
3842         if (next->columns > width)
3843           width=next->columns;
3844         height+=next->rows;
3845         if (next->previous != (Image *) NULL)
3846           height+=offset;
3847         continue;
3848       }
3849     width+=next->columns;
3850     if (next->previous != (Image *) NULL)
3851       width+=offset;
3852     if (next->rows > height)
3853       height=next->rows;
3854   }
3855   /*
3856     Smush images.
3857   */
3858   smush_image=CloneImage(image,width,height,MagickTrue,exception);
3859   if (smush_image == (Image *) NULL)
3860     return((Image *) NULL);
3861   if (SetImageStorageClass(smush_image,DirectClass,exception) == MagickFalse)
3862     {
3863       smush_image=DestroyImage(smush_image);
3864       return((Image *) NULL);
3865     }
3866   smush_image->matte=matte;
3867   (void) SetImageBackgroundColor(smush_image,exception);
3868   status=MagickTrue;
3869   x_offset=0;
3870   y_offset=0;
3871   smush_view=AcquireCacheView(smush_image);
3872   for (n=0; n < (MagickOffsetType) number_images; n++)
3873   {
3874     SetGeometry(smush_image,&geometry);
3875     GravityAdjustGeometry(image->columns,image->rows,image->gravity,&geometry);
3876     if (stack != MagickFalse)
3877       {
3878         x_offset-=geometry.x;
3879         y_offset-=SmushYGap(smush_image,image,offset,exception);
3880       }
3881     else
3882       {
3883         x_offset-=SmushXGap(smush_image,image,offset,exception);
3884         y_offset-=geometry.y;
3885       }
3886     status=CompositeImage(smush_image,OverCompositeOp,image,x_offset,y_offset,
3887       exception);
3888     proceed=SetImageProgress(image,SmushImageTag,n,number_images);
3889     if (proceed == MagickFalse)
3890       break;
3891     if (stack == MagickFalse)
3892       {
3893         x_offset+=(ssize_t) image->columns;
3894         y_offset=0;
3895       }
3896     else
3897       {
3898         x_offset=0;
3899         y_offset+=(ssize_t) image->rows;
3900       }
3901     image=GetNextImageInList(image);
3902   }
3903   if (stack == MagickFalse)
3904     smush_image->columns=(size_t) x_offset;
3905   else
3906     smush_image->rows=(size_t) y_offset;
3907   smush_view=DestroyCacheView(smush_view);
3908   if (status == MagickFalse)
3909     smush_image=DestroyImage(smush_image);
3910   return(smush_image);
3911 }
3912 \f
3913 /*
3914 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3915 %                                                                             %
3916 %                                                                             %
3917 %                                                                             %
3918 %   S t r i p I m a g e                                                       %
3919 %                                                                             %
3920 %                                                                             %
3921 %                                                                             %
3922 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3923 %
3924 %  StripImage() strips an image of all profiles and comments.
3925 %
3926 %  The format of the StripImage method is:
3927 %
3928 %      MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3929 %
3930 %  A description of each parameter follows:
3931 %
3932 %    o image: the image.
3933 %
3934 %    o exception: return any errors or warnings in this structure.
3935 %
3936 */
3937 MagickExport MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3938 {
3939   MagickBooleanType
3940     status;
3941
3942   assert(image != (Image *) NULL);
3943   if (image->debug != MagickFalse)
3944     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3945   (void) exception;
3946   DestroyImageProfiles(image);
3947   (void) DeleteImageProperty(image,"comment");
3948   (void) DeleteImageProperty(image,"date:create");
3949   (void) DeleteImageProperty(image,"date:modify");
3950   status=SetImageArtifact(image,"png:include-chunk","none,trns,gama");
3951   return(status);
3952 }
3953 \f
3954 /*
3955 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3956 %                                                                             %
3957 %                                                                             %
3958 %                                                                             %
3959 +   S y n c I m a g e                                                         %
3960 %                                                                             %
3961 %                                                                             %
3962 %                                                                             %
3963 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3964 %
3965 %  SyncImage() initializes the red, green, and blue intensities of each pixel
3966 %  as defined by the colormap index.
3967 %
3968 %  The format of the SyncImage method is:
3969 %
3970 %      MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3971 %
3972 %  A description of each parameter follows:
3973 %
3974 %    o image: the image.
3975 %
3976 %    o exception: return any errors or warnings in this structure.
3977 %
3978 */
3979
3980 static inline Quantum PushColormapIndex(Image *image,
3981   const size_t index,MagickBooleanType *range_exception)
3982 {
3983   if (index < image->colors)
3984     return((Quantum) index);
3985   *range_exception=MagickTrue;
3986   return((Quantum) 0);
3987 }
3988
3989 MagickExport MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3990 {
3991   CacheView
3992     *image_view;
3993
3994   MagickBooleanType
3995     range_exception,
3996     status;
3997
3998   ssize_t
3999     y;
4000
4001   assert(image != (Image *) NULL);
4002   if (image->debug != MagickFalse)
4003     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
4004   assert(image->signature == MagickSignature);
4005   if (image->storage_class == DirectClass)
4006     return(MagickFalse);
4007   range_exception=MagickFalse;
4008   status=MagickTrue;
4009   image_view=AcquireCacheView(image);
4010 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4011   #pragma omp parallel for schedule(dynamic,4) shared(status)
4012 #endif
4013   for (y=0; y < (ssize_t) image->rows; y++)
4014   {
4015     Quantum
4016       index;
4017
4018     register Quantum
4019       *restrict q;
4020
4021     register ssize_t
4022       x;
4023
4024     if (status == MagickFalse)
4025       continue;
4026     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
4027     if (q == (Quantum *) NULL)
4028       {
4029         status=MagickFalse;
4030         continue;
4031       }
4032     for (x=0; x < (ssize_t) image->columns; x++)
4033     {
4034       index=PushColormapIndex(image,(size_t) GetPixelIndex(image,q),
4035         &range_exception);
4036       SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
4037       q+=GetPixelChannels(image);
4038     }
4039     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4040       status=MagickFalse;
4041   }
4042   image_view=DestroyCacheView(image_view);
4043   if (range_exception != MagickFalse)
4044     (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
4045       "InvalidColormapIndex","`%s'",image->filename);
4046   return(status);
4047 }
4048 \f
4049 /*
4050 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4051 %                                                                             %
4052 %                                                                             %
4053 %                                                                             %
4054 %   S y n c I m a g e S e t t i n g s                                         %
4055 %                                                                             %
4056 %                                                                             %
4057 %                                                                             %
4058 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4059 %
4060 %  SyncImageSettings() sync the image info options to the image.
4061 %
4062 %  The format of the SyncImageSettings method is:
4063 %
4064 %      MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4065 %        Image *image,ExceptionInfo *exception)
4066 %      MagickBooleanType SyncImagesSettings(const ImageInfo *image_info,
4067 %        Image *image,ExceptionInfo *exception)
4068 %
4069 %  A description of each parameter follows:
4070 %
4071 %    o image_info: the image info.
4072 %
4073 %    o image: the image.
4074 %
4075 %    o exception: return any errors or warnings in this structure.
4076 %
4077 */
4078
4079 MagickExport MagickBooleanType SyncImagesSettings(ImageInfo *image_info,
4080   Image *images,ExceptionInfo *exception)
4081 {
4082   Image
4083     *image;
4084
4085   assert(image_info != (const ImageInfo *) NULL);
4086   assert(image_info->signature == MagickSignature);
4087   assert(images != (Image *) NULL);
4088   assert(images->signature == MagickSignature);
4089   if (images->debug != MagickFalse)
4090     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
4091   image=images;
4092   for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
4093     (void) SyncImageSettings(image_info,image,exception);
4094   (void) DeleteImageOption(image_info,"page");
4095   return(MagickTrue);
4096 }
4097
4098 MagickExport MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4099   Image *image,ExceptionInfo *exception)
4100 {
4101   char
4102     property[MaxTextExtent];
4103
4104   const char
4105     *option,
4106     *value;
4107
4108   GeometryInfo
4109     geometry_info;
4110
4111   MagickStatusType
4112     flags;
4113
4114   ResolutionType
4115     units;
4116
4117   /*
4118     Sync image options.
4119   */
4120   assert(image_info != (const ImageInfo *) NULL);
4121   assert(image_info->signature == MagickSignature);
4122   assert(image != (Image *) NULL);
4123   assert(image->signature == MagickSignature);
4124   if (image->debug != MagickFalse)
4125     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4126   option=GetImageOption(image_info,"background");
4127   if (option != (const char *) NULL)
4128     (void) QueryColorCompliance(option,AllCompliance,&image->background_color,
4129       exception);
4130   option=GetImageOption(image_info,"bias");
4131   if (option != (const char *) NULL)
4132     image->bias=StringToDoubleInterval(option,(double) QuantumRange+1.0);
4133   option=GetImageOption(image_info,"black-point-compensation");
4134   if (option != (const char *) NULL)
4135     image->black_point_compensation=(MagickBooleanType) ParseCommandOption(
4136       MagickBooleanOptions,MagickFalse,option);
4137   option=GetImageOption(image_info,"blue-primary");
4138   if (option != (const char *) NULL)
4139     {
4140       flags=ParseGeometry(option,&geometry_info);
4141       image->chromaticity.blue_primary.x=geometry_info.rho;
4142       image->chromaticity.blue_primary.y=geometry_info.sigma;
4143       if ((flags & SigmaValue) == 0)
4144         image->chromaticity.blue_primary.y=image->chromaticity.blue_primary.x;
4145     }
4146   option=GetImageOption(image_info,"bordercolor");
4147   if (option != (const char *) NULL)
4148     (void) QueryColorCompliance(option,AllCompliance,&image->border_color,
4149       exception);
4150   option=GetImageOption(image_info,"compose");
4151   if (option != (const char *) NULL)
4152     image->compose=(CompositeOperator) ParseCommandOption(MagickComposeOptions,
4153       MagickFalse,option);
4154   option=GetImageOption(image_info,"compress");
4155   if (option != (const char *) NULL)
4156     image->compression=(CompressionType) ParseCommandOption(
4157       MagickCompressOptions,MagickFalse,option);
4158   option=GetImageOption(image_info,"debug");
4159   if (option != (const char *) NULL)
4160     image->debug=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4161       MagickFalse,option);
4162   option=GetImageOption(image_info,"density");
4163   if (option != (const char *) NULL)
4164     {
4165       GeometryInfo
4166         geometry_info;
4167
4168       flags=ParseGeometry(option,&geometry_info);
4169       image->resolution.x=geometry_info.rho;
4170       image->resolution.y=geometry_info.sigma;
4171       if ((flags & SigmaValue) == 0)
4172         image->resolution.y=image->resolution.x;
4173     }
4174   option=GetImageOption(image_info,"depth");
4175   if (option != (const char *) NULL)
4176     image->depth=StringToUnsignedLong(option);
4177   option=GetImageOption(image_info,"endian");
4178   if (option != (const char *) NULL)
4179     image->endian=(EndianType) ParseCommandOption(MagickEndianOptions,
4180       MagickFalse,option);
4181   option=GetImageOption(image_info,"filter");
4182   if (option != (const char *) NULL)
4183     image->filter=(FilterTypes) ParseCommandOption(MagickFilterOptions,
4184       MagickFalse,option);
4185   option=GetImageOption(image_info,"fuzz");
4186   if (option != (const char *) NULL)
4187     image->fuzz=StringToDoubleInterval(option,(double) QuantumRange+1.0);
4188   option=GetImageOption(image_info,"gravity");
4189   if (option != (const char *) NULL)
4190     image->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
4191       MagickFalse,option);
4192   option=GetImageOption(image_info,"green-primary");
4193   if (option != (const char *) NULL)
4194     {
4195       flags=ParseGeometry(option,&geometry_info);
4196       image->chromaticity.green_primary.x=geometry_info.rho;
4197       image->chromaticity.green_primary.y=geometry_info.sigma;
4198       if ((flags & SigmaValue) == 0)
4199         image->chromaticity.green_primary.y=image->chromaticity.green_primary.x;
4200     }
4201   option=GetImageOption(image_info,"intent");
4202   if (option != (const char *) NULL)
4203     image->rendering_intent=(RenderingIntent) ParseCommandOption(
4204       MagickIntentOptions,MagickFalse,option);
4205   option=GetImageOption(image_info,"interlace");
4206   if (option != (const char *) NULL)
4207     image->interlace=(InterlaceType) ParseCommandOption(MagickInterlaceOptions,
4208       MagickFalse,option);
4209   option=GetImageOption(image_info,"interpolate");
4210   if (option != (const char *) NULL)
4211     image->interpolate=(PixelInterpolateMethod) ParseCommandOption(
4212       MagickInterpolateOptions,MagickFalse,option);
4213   option=GetImageOption(image_info,"loop");
4214   if (option != (const char *) NULL)
4215     image->iterations=StringToUnsignedLong(option);
4216   option=GetImageOption(image_info,"mattecolor");
4217   if (option != (const char *) NULL)
4218     (void) QueryColorCompliance(option,AllCompliance,&image->matte_color,
4219       exception);
4220   option=GetImageOption(image_info,"orient");
4221   if (option != (const char *) NULL)
4222     image->orientation=(OrientationType) ParseCommandOption(
4223       MagickOrientationOptions,MagickFalse,option);
4224   option=GetImageOption(image_info,"page");
4225   if (option != (const char *) NULL)
4226     {
4227       char
4228         *geometry;
4229
4230       geometry=GetPageGeometry(option);
4231       flags=ParseAbsoluteGeometry(geometry,&image->page);
4232       geometry=DestroyString(geometry);
4233     }
4234   option=GetImageOption(image_info,"quality");
4235   if (option != (const char *) NULL)
4236     image->quality=StringToUnsignedLong(option);
4237   option=GetImageOption(image_info,"red-primary");
4238   if (option != (const char *) NULL)
4239     {
4240       flags=ParseGeometry(option,&geometry_info);
4241       image->chromaticity.red_primary.x=geometry_info.rho;
4242       image->chromaticity.red_primary.y=geometry_info.sigma;
4243       if ((flags & SigmaValue) == 0)
4244         image->chromaticity.red_primary.y=image->chromaticity.red_primary.x;
4245     }
4246   if (image_info->quality != UndefinedCompressionQuality)
4247     image->quality=image_info->quality;
4248   option=GetImageOption(image_info,"scene");
4249   if (option != (const char *) NULL)
4250     image->scene=StringToUnsignedLong(option);
4251   option=GetImageOption(image_info,"taint");
4252   if (option != (const char *) NULL)
4253     image->taint=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4254       MagickFalse,option);
4255   option=GetImageOption(image_info,"tile-offset");
4256   if (option != (const char *) NULL)
4257     {
4258       char
4259         *geometry;
4260
4261       geometry=GetPageGeometry(option);
4262       flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
4263       geometry=DestroyString(geometry);
4264     }
4265   option=GetImageOption(image_info,"transparent-color");
4266   if (option != (const char *) NULL)
4267     (void) QueryColorCompliance(option,AllCompliance,&image->transparent_color,
4268       exception);
4269   option=GetImageOption(image_info,"type");
4270   if (option != (const char *) NULL)
4271     image->type=(ImageType) ParseCommandOption(MagickTypeOptions,MagickFalse,
4272       option);
4273   option=GetImageOption(image_info,"units");
4274   if (option != (const char *) NULL)
4275     units=(ResolutionType) ParseCommandOption(MagickResolutionOptions,
4276       MagickFalse,option);
4277   else
4278     units = image_info->units;
4279   if (units != UndefinedResolution)
4280     {
4281       if (image->units != units)
4282         switch (image->units)
4283         {
4284           case PixelsPerInchResolution:
4285           {
4286             if (units == PixelsPerCentimeterResolution)
4287               {
4288                 image->resolution.x/=2.54;
4289                 image->resolution.y/=2.54;
4290               }
4291             break;
4292           }
4293           case PixelsPerCentimeterResolution:
4294           {
4295             if (units == PixelsPerInchResolution)
4296               {
4297                 image->resolution.x=(double) ((size_t) (100.0*2.54*
4298                   image->resolution.x+0.5))/100.0;
4299                 image->resolution.y=(double) ((size_t) (100.0*2.54*
4300                   image->resolution.y+0.5))/100.0;
4301               }
4302             break;
4303           }
4304           default:
4305             break;
4306         }
4307       image->units=units;
4308     }
4309   option=GetImageOption(image_info,"white-point");
4310   if (option != (const char *) NULL)
4311     {
4312       flags=ParseGeometry(option,&geometry_info);
4313       image->chromaticity.white_point.x=geometry_info.rho;
4314       image->chromaticity.white_point.y=geometry_info.sigma;
4315       if ((flags & SigmaValue) == 0)
4316         image->chromaticity.white_point.y=image->chromaticity.white_point.x;
4317     }
4318   ResetImageOptionIterator(image_info);
4319   for (option=GetNextImageOption(image_info); option != (const char *) NULL; )
4320   {
4321     value=GetImageOption(image_info,option);
4322     if (value != (const char *) NULL)
4323       {
4324         (void) FormatLocaleString(property,MaxTextExtent,"%s",option);
4325         (void) SetImageArtifact(image,property,value);
4326       }
4327     option=GetNextImageOption(image_info);
4328   }
4329   return(MagickTrue);
4330 }