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 1999-2012 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(static,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           channel=GetPixelChannelMapChannel(image,i);
 560           traits=GetPixelChannelMapTraits(image,channel);
 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   (void) CloneImageOptions(clone_info,image_info);
 988   clone_info->debug=IsEventLogging();
 989   clone_info->signature=image_info->signature;
 990   return(clone_info);
 991 }
 992 \f
 993 /*
 994 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 995 %                                                                             %
 996 %                                                                             %
 997 %                                                                             %
 998 %     C o m b i n e I m a g e s                                               %
 999 %                                                                             %
1000 %                                                                             %
1001 %                                                                             %
1002 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1003 %
1004 %  CombineImages() combines one or more images into a single image.  The
1005 %  grayscale value of the pixels of each image in the sequence is assigned in
1006 %  order to the specified channels of the combined image.   The typical
1007 %  ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.
1008 %
1009 %  The format of the CombineImages method is:
1010 %
1011 %      Image *CombineImages(const Image *image,ExceptionInfo *exception)
1012 %
1013 %  A description of each parameter follows:
1014 %
1015 %    o image: the image.
1016 %
1017 %    o exception: return any errors or warnings in this structure.
1018 %
1019 */
1020
1021 static inline size_t MagickMin(const size_t x,const size_t y)
1022 {
1023   if (x < y)
1024     return(x);
1025   return(y);
1026 }
1027
1028 MagickExport Image *CombineImages(const Image *image,ExceptionInfo *exception)
1029 {
1030 #define CombineImageTag  "Combine/Image"
1031
1032   CacheView
1033     *combine_view;
1034
1035   Image
1036     *combine_image;
1037
1038   MagickBooleanType
1039     status;
1040
1041   MagickOffsetType
1042     progress;
1043
1044   ssize_t
1045     y;
1046
1047   /*
1048     Ensure the image are the same size.
1049   */
1050   assert(image != (const Image *) NULL);
1051   assert(image->signature == MagickSignature);
1052   if (image->debug != MagickFalse)
1053     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1054   assert(exception != (ExceptionInfo *) NULL);
1055   assert(exception->signature == MagickSignature);
1056   combine_image=CloneImage(image,0,0,MagickTrue,exception);
1057   if (combine_image == (Image *) NULL)
1058     return((Image *) NULL);
1059   if (SetImageStorageClass(combine_image,DirectClass,exception) == MagickFalse)
1060     {
1061       combine_image=DestroyImage(combine_image);
1062       return((Image *) NULL);
1063     }
1064   if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
1065     combine_image->matte=MagickTrue;
1066   /*
1067     Combine images.
1068   */
1069   status=MagickTrue;
1070   progress=0;
1071   combine_view=AcquireCacheView(combine_image);
1072   for (y=0; y < (ssize_t) combine_image->rows; y++)
1073   {
1074     CacheView
1075       *image_view;
1076
1077     const Image
1078       *next;
1079
1080     Quantum
1081       *pixels;
1082
1083     register const Quantum
1084       *restrict p;
1085
1086     register Quantum
1087       *restrict q;
1088
1089     register ssize_t
1090       i;
1091
1092     if (status == MagickFalse)
1093       continue;
1094     pixels=GetCacheViewAuthenticPixels(combine_view,0,y,combine_image->columns,
1095       1,exception);
1096     if (pixels == (Quantum *) NULL)
1097       {
1098         status=MagickFalse;
1099         continue;
1100       }
1101     next=image;
1102     for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1103     {
1104       PixelChannel
1105         channel;
1106
1107       PixelTrait
1108         combine_traits,
1109         traits;
1110
1111       register ssize_t
1112         x;
1113
1114       if (next == (Image *) NULL)
1115         continue;
1116       channel=GetPixelChannelMapChannel(image,i);
1117       traits=GetPixelChannelMapTraits(image,channel);
1118       combine_traits=GetPixelChannelMapTraits(combine_image,channel);
1119       if ((traits == UndefinedPixelTrait) ||
1120           (combine_traits == UndefinedPixelTrait))
1121         continue;
1122       image_view=AcquireCacheView(next);
1123       p=GetCacheViewVirtualPixels(image_view,0,y,next->columns,1,exception);
1124       if (p == (const Quantum *) NULL)
1125         continue;
1126       q=pixels;
1127       for (x=0; x < (ssize_t) combine_image->columns; x++)
1128       {
1129         if (x < (ssize_t) image->columns)
1130           {
1131             q[i]=p[i];
1132             p+=GetPixelChannels(image);
1133           }
1134         q+=GetPixelChannels(combine_image);
1135       }
1136       image_view=DestroyCacheView(image_view);
1137       next=GetNextImageInList(next);
1138       if (SyncCacheViewAuthenticPixels(combine_view,exception) == MagickFalse)
1139         status=MagickFalse;
1140       if (image->progress_monitor != (MagickProgressMonitor) NULL)
1141         {
1142           MagickBooleanType
1143             proceed;
1144
1145           proceed=SetImageProgress(image,CombineImageTag,progress++,
1146             combine_image->rows);
1147           if (proceed == MagickFalse)
1148             status=MagickFalse;
1149         }
1150     }
1151   }
1152   combine_view=DestroyCacheView(combine_view);
1153   if (status == MagickFalse)
1154     combine_image=DestroyImage(combine_image);
1155   return(combine_image);
1156 }
1157 \f
1158 /*
1159 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1160 %                                                                             %
1161 %                                                                             %
1162 %                                                                             %
1163 %   D e s t r o y I m a g e                                                   %
1164 %                                                                             %
1165 %                                                                             %
1166 %                                                                             %
1167 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1168 %
1169 %  DestroyImage() dereferences an image, deallocating memory associated with
1170 %  the image if the reference count becomes zero.
1171 %
1172 %  The format of the DestroyImage method is:
1173 %
1174 %      Image *DestroyImage(Image *image)
1175 %
1176 %  A description of each parameter follows:
1177 %
1178 %    o image: the image.
1179 %
1180 */
1181 MagickExport Image *DestroyImage(Image *image)
1182 {
1183   MagickBooleanType
1184     destroy;
1185
1186   /*
1187     Dereference image.
1188   */
1189   assert(image != (Image *) NULL);
1190   assert(image->signature == MagickSignature);
1191   if (image->debug != MagickFalse)
1192     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1193   destroy=MagickFalse;
1194   LockSemaphoreInfo(image->semaphore);
1195   image->reference_count--;
1196   if (image->reference_count == 0)
1197     destroy=MagickTrue;
1198   UnlockSemaphoreInfo(image->semaphore);
1199   if (destroy == MagickFalse)
1200     return((Image *) NULL);
1201   /*
1202     Destroy image.
1203   */
1204   DestroyImagePixels(image);
1205   image->channel_map=DestroyPixelChannelMap(image->channel_map);
1206   if (image->clip_mask != (Image *) NULL)
1207     image->clip_mask=DestroyImage(image->clip_mask);
1208   if (image->mask != (Image *) NULL)
1209     image->mask=DestroyImage(image->mask);
1210   if (image->montage != (char *) NULL)
1211     image->montage=DestroyString(image->montage);
1212   if (image->directory != (char *) NULL)
1213     image->directory=DestroyString(image->directory);
1214   if (image->colormap != (PixelInfo *) NULL)
1215     image->colormap=(PixelInfo *) RelinquishMagickMemory(image->colormap);
1216   if (image->geometry != (char *) NULL)
1217     image->geometry=DestroyString(image->geometry);
1218   DestroyImageProfiles(image);
1219   DestroyImageProperties(image);
1220   DestroyImageArtifacts(image);
1221   if (image->ascii85 != (Ascii85Info*) NULL)
1222     image->ascii85=(Ascii85Info *) RelinquishMagickMemory(image->ascii85);
1223   DestroyBlob(image);
1224   if (image->semaphore != (SemaphoreInfo *) NULL)
1225     DestroySemaphoreInfo(&image->semaphore);
1226   image->signature=(~MagickSignature);
1227   image=(Image *) RelinquishMagickMemory(image);
1228   return(image);
1229 }
1230 \f
1231 /*
1232 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1233 %                                                                             %
1234 %                                                                             %
1235 %                                                                             %
1236 %   D e s t r o y I m a g e I n f o                                           %
1237 %                                                                             %
1238 %                                                                             %
1239 %                                                                             %
1240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1241 %
1242 %  DestroyImageInfo() deallocates memory associated with an ImageInfo
1243 %  structure.
1244 %
1245 %  The format of the DestroyImageInfo method is:
1246 %
1247 %      ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1248 %
1249 %  A description of each parameter follows:
1250 %
1251 %    o image_info: the image info.
1252 %
1253 */
1254 MagickExport ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1255 {
1256   assert(image_info != (ImageInfo *) NULL);
1257   assert(image_info->signature == MagickSignature);
1258   if (image_info->debug != MagickFalse)
1259     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1260       image_info->filename);
1261   if (image_info->size != (char *) NULL)
1262     image_info->size=DestroyString(image_info->size);
1263   if (image_info->extract != (char *) NULL)
1264     image_info->extract=DestroyString(image_info->extract);
1265   if (image_info->scenes != (char *) NULL)
1266     image_info->scenes=DestroyString(image_info->scenes);
1267   if (image_info->page != (char *) NULL)
1268     image_info->page=DestroyString(image_info->page);
1269   if (image_info->sampling_factor != (char *) NULL)
1270     image_info->sampling_factor=DestroyString(
1271       image_info->sampling_factor);
1272   if (image_info->server_name != (char *) NULL)
1273     image_info->server_name=DestroyString(
1274       image_info->server_name);
1275   if (image_info->font != (char *) NULL)
1276     image_info->font=DestroyString(image_info->font);
1277   if (image_info->texture != (char *) NULL)
1278     image_info->texture=DestroyString(image_info->texture);
1279   if (image_info->density != (char *) NULL)
1280     image_info->density=DestroyString(image_info->density);
1281   if (image_info->view != (char *) NULL)
1282     image_info->view=DestroyString(image_info->view);
1283   if (image_info->cache != (void *) NULL)
1284     image_info->cache=DestroyPixelCache(image_info->cache);
1285   if (image_info->profile != (StringInfo *) NULL)
1286     image_info->profile=(void *) DestroyStringInfo((StringInfo *)
1287       image_info->profile);
1288   DestroyImageOptions(image_info);
1289   image_info->signature=(~MagickSignature);
1290   image_info=(ImageInfo *) RelinquishMagickMemory(image_info);
1291   return(image_info);
1292 }
1293 \f
1294 /*
1295 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1296 %                                                                             %
1297 %                                                                             %
1298 %                                                                             %
1299 +   D i s a s s o c i a t e I m a g e S t r e a m                             %
1300 %                                                                             %
1301 %                                                                             %
1302 %                                                                             %
1303 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1304 %
1305 %  DisassociateImageStream() disassociates the image stream.
1306 %
1307 %  The format of the DisassociateImageStream method is:
1308 %
1309 %      MagickBooleanType DisassociateImageStream(const Image *image)
1310 %
1311 %  A description of each parameter follows:
1312 %
1313 %    o image: the image.
1314 %
1315 */
1316 MagickExport void DisassociateImageStream(Image *image)
1317 {
1318   assert(image != (const Image *) NULL);
1319   assert(image->signature == MagickSignature);
1320   if (image->debug != MagickFalse)
1321     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1322   (void) DetachBlob(image->blob);
1323 }
1324 \f
1325 /*
1326 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1327 %                                                                             %
1328 %                                                                             %
1329 %                                                                             %
1330 %   G e t I m a g e A l p h a C h a n n e l                                   %
1331 %                                                                             %
1332 %                                                                             %
1333 %                                                                             %
1334 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1335 %
1336 %  GetImageAlphaChannel() returns MagickFalse if the image alpha channel is
1337 %  not activated.  That is, the image is RGB rather than RGBA or CMYK rather
1338 %  than CMYKA.
1339 %
1340 %  The format of the GetImageAlphaChannel method is:
1341 %
1342 %      MagickBooleanType GetImageAlphaChannel(const Image *image)
1343 %
1344 %  A description of each parameter follows:
1345 %
1346 %    o image: the image.
1347 %
1348 */
1349 MagickExport MagickBooleanType GetImageAlphaChannel(const Image *image)
1350 {
1351   assert(image != (const Image *) NULL);
1352   if (image->debug != MagickFalse)
1353     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1354   assert(image->signature == MagickSignature);
1355   return(image->matte);
1356 }
1357 \f
1358 /*
1359 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1360 %                                                                             %
1361 %                                                                             %
1362 %                                                                             %
1363 %   G e t I m a g e C l i p M a s k                                           %
1364 %                                                                             %
1365 %                                                                             %
1366 %                                                                             %
1367 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1368 %
1369 %  GetImageClipMask() returns the clip path associated with the image.
1370 %
1371 %  The format of the GetImageClipMask method is:
1372 %
1373 %      Image *GetImageClipMask(const Image *image,ExceptionInfo *exception)
1374 %
1375 %  A description of each parameter follows:
1376 %
1377 %    o image: the image.
1378 %
1379 */
1380 MagickExport Image *GetImageClipMask(const Image *image,
1381   ExceptionInfo *exception)
1382 {
1383   assert(image != (const Image *) NULL);
1384   if (image->debug != MagickFalse)
1385     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1386   assert(image->signature == MagickSignature);
1387   if (image->clip_mask == (Image *) NULL)
1388     return((Image *) NULL);
1389   return(CloneImage(image->clip_mask,0,0,MagickTrue,exception));
1390 }
1391 \f
1392 /*
1393 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1394 %                                                                             %
1395 %                                                                             %
1396 %                                                                             %
1397 %   G e t I m a g e I n f o                                                   %
1398 %                                                                             %
1399 %                                                                             %
1400 %                                                                             %
1401 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1402 %
1403 %  GetImageInfo() initializes image_info to default values.
1404 %
1405 %  The format of the GetImageInfo method is:
1406 %
1407 %      void GetImageInfo(ImageInfo *image_info)
1408 %
1409 %  A description of each parameter follows:
1410 %
1411 %    o image_info: the image info.
1412 %
1413 */
1414 MagickExport void GetImageInfo(ImageInfo *image_info)
1415 {
1416   const char
1417     *synchronize;
1418
1419   ExceptionInfo
1420     *exception;
1421
1422   /*
1423     File and image dimension members.
1424   */
1425   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1426   assert(image_info != (ImageInfo *) NULL);
1427   (void) ResetMagickMemory(image_info,0,sizeof(*image_info));
1428   image_info->adjoin=MagickTrue;
1429   image_info->interlace=NoInterlace;
1430   image_info->channel=DefaultChannels;
1431   image_info->quality=UndefinedCompressionQuality;
1432   image_info->antialias=MagickTrue;
1433   image_info->dither=MagickTrue;
1434   synchronize=GetEnvironmentValue("MAGICK_SYNCHRONIZE");
1435   if (synchronize != (const char *) NULL)
1436     image_info->synchronize=IsMagickTrue(synchronize);
1437   exception=AcquireExceptionInfo();
1438   (void) QueryColorCompliance(BackgroundColor,AllCompliance,
1439     &image_info->background_color,exception);
1440   (void) QueryColorCompliance(BorderColor,AllCompliance,
1441     &image_info->border_color,exception);
1442   (void) QueryColorCompliance(MatteColor,AllCompliance,&image_info->matte_color,
1443     exception);
1444   (void) QueryColorCompliance(TransparentColor,AllCompliance,
1445     &image_info->transparent_color,exception);
1446   exception=DestroyExceptionInfo(exception);
1447   image_info->debug=IsEventLogging();
1448   image_info->signature=MagickSignature;
1449 }
1450 \f
1451 /*
1452 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1453 %                                                                             %
1454 %                                                                             %
1455 %                                                                             %
1456 %   G e t I m a g e I n f o F i l e                                           %
1457 %                                                                             %
1458 %                                                                             %
1459 %                                                                             %
1460 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1461 %
1462 %  GetImageInfoFile() returns the image info file member.
1463 %
1464 %  The format of the GetImageInfoFile method is:
1465 %
1466 %      FILE *GetImageInfoFile(const ImageInfo *image_info)
1467 %
1468 %  A description of each parameter follows:
1469 %
1470 %    o image_info: the image info.
1471 %
1472 */
1473 MagickExport FILE *GetImageInfoFile(const ImageInfo *image_info)
1474 {
1475   return(image_info->file);
1476 }
1477 \f
1478 /*
1479 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1480 %                                                                             %
1481 %                                                                             %
1482 %                                                                             %
1483 %   G e t I m a g e M a s k                                                   %
1484 %                                                                             %
1485 %                                                                             %
1486 %                                                                             %
1487 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1488 %
1489 %  GetImageMask() returns the mask associated with the image.
1490 %
1491 %  The format of the GetImageMask method is:
1492 %
1493 %      Image *GetImageMask(const Image *image,ExceptionInfo *exception)
1494 %
1495 %  A description of each parameter follows:
1496 %
1497 %    o image: the image.
1498 %
1499 */
1500 MagickExport Image *GetImageMask(const Image *image,ExceptionInfo *exception)
1501 {
1502   assert(image != (const Image *) NULL);
1503   if (image->debug != MagickFalse)
1504     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1505   assert(image->signature == MagickSignature);
1506   if (image->mask == (Image *) NULL)
1507     return((Image *) NULL);
1508   return(CloneImage(image->mask,0,0,MagickTrue,exception));
1509 }
1510 \f
1511 /*
1512 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1513 %                                                                             %
1514 %                                                                             %
1515 %                                                                             %
1516 +   G e t I m a g e R e f e r e n c e C o u n t                               %
1517 %                                                                             %
1518 %                                                                             %
1519 %                                                                             %
1520 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1521 %
1522 %  GetImageReferenceCount() returns the image reference count.
1523 %
1524 %  The format of the GetReferenceCount method is:
1525 %
1526 %      ssize_t GetImageReferenceCount(Image *image)
1527 %
1528 %  A description of each parameter follows:
1529 %
1530 %    o image: the image.
1531 %
1532 */
1533 MagickExport ssize_t GetImageReferenceCount(Image *image)
1534 {
1535   ssize_t
1536     reference_count;
1537
1538   assert(image != (Image *) NULL);
1539   assert(image->signature == MagickSignature);
1540   if (image->debug != MagickFalse)
1541     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1542   LockSemaphoreInfo(image->semaphore);
1543   reference_count=image->reference_count;
1544   UnlockSemaphoreInfo(image->semaphore);
1545   return(reference_count);
1546 }
1547 \f
1548 /*
1549 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1550 %                                                                             %
1551 %                                                                             %
1552 %                                                                             %
1553 %   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                       %
1554 %                                                                             %
1555 %                                                                             %
1556 %                                                                             %
1557 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1558 %
1559 %  GetImageVirtualPixelMethod() gets the "virtual pixels" method for the
1560 %  image.  A virtual pixel is any pixel access that is outside the boundaries
1561 %  of the image cache.
1562 %
1563 %  The format of the GetImageVirtualPixelMethod() method is:
1564 %
1565 %      VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1566 %
1567 %  A description of each parameter follows:
1568 %
1569 %    o image: the image.
1570 %
1571 */
1572 MagickExport VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1573 {
1574   assert(image != (Image *) NULL);
1575   assert(image->signature == MagickSignature);
1576   if (image->debug != MagickFalse)
1577     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1578   return(GetPixelCacheVirtualMethod(image));
1579 }
1580 \f
1581 /*
1582 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1583 %                                                                             %
1584 %                                                                             %
1585 %                                                                             %
1586 %  I n t e r p r e t I m a g e F i l e n a m e                                %
1587 %                                                                             %
1588 %                                                                             %
1589 %                                                                             %
1590 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1591 %
1592 %  InterpretImageFilename() interprets embedded characters in an image filename.
1593 %  The filename length is returned.
1594 %
1595 %  The format of the InterpretImageFilename method is:
1596 %
1597 %      size_t InterpretImageFilename(const ImageInfo *image_info,
1598 %        Image *image,const char *format,int value,char *filename,
1599 %        ExceptionInfo *exception)
1600 %
1601 %  A description of each parameter follows.
1602 %
1603 %    o image_info: the image info..
1604 %
1605 %    o image: the image.
1606 %
1607 %    o format:  A filename describing the format to use to write the numeric
1608 %      argument. Only the first numeric format identifier is replaced.
1609 %
1610 %    o value:  Numeric value to substitute into format filename.
1611 %
1612 %    o filename:  return the formatted filename in this character buffer.
1613 %
1614 %    o exception: return any errors or warnings in this structure.
1615 %
1616 */
1617 MagickExport size_t InterpretImageFilename(const ImageInfo *image_info,
1618   Image *image,const char *format,int value,char *filename,
1619   ExceptionInfo *exception)
1620 {
1621   char
1622     *q;
1623
1624   int
1625     c;
1626
1627   MagickBooleanType
1628     canonical;
1629
1630   register const char
1631     *p;
1632
1633   size_t
1634     length;
1635
1636   canonical=MagickFalse;
1637   length=0;
1638   (void) CopyMagickString(filename,format,MaxTextExtent);
1639   for (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%'))
1640   {
1641     q=(char *) p+1;
1642     if (*q == '%')
1643       {
1644         p=q+1;
1645         continue;
1646       }
1647     if (*q == '0')
1648       {
1649         ssize_t
1650           value;
1651
1652         value=(ssize_t) strtol(q,&q,10);
1653         (void) value;
1654       }
1655     switch (*q)
1656     {
1657       case 'd':
1658       case 'o':
1659       case 'x':
1660       {
1661         q++;
1662         c=(*q);
1663         *q='\0';
1664         (void) FormatLocaleString(filename+(p-format),(size_t) (MaxTextExtent-
1665           (p-format)),p,value);
1666         *q=c;
1667         (void) ConcatenateMagickString(filename,q,MaxTextExtent);
1668         canonical=MagickTrue;
1669         if (*(q-1) != '%')
1670           break;
1671         p++;
1672         break;
1673       }
1674       case '[':
1675       {
1676         char
1677           pattern[MaxTextExtent];
1678
1679         const char
1680           *value;
1681
1682         register char
1683           *r;
1684
1685         register ssize_t
1686           i;
1687
1688         ssize_t
1689           depth;
1690
1691         /*
1692           Image option.
1693         */
1694         if (strchr(p,']') == (char *) NULL)
1695           break;
1696         depth=1;
1697         r=q+1;
1698         for (i=0; (i < (MaxTextExtent-1L)) && (*r != '\0'); i++)
1699         {
1700           if (*r == '[')
1701             depth++;
1702           if (*r == ']')
1703             depth--;
1704           if (depth <= 0)
1705             break;
1706           pattern[i]=(*r++);
1707         }
1708         pattern[i]='\0';
1709         if (LocaleNCompare(pattern,"filename:",9) != 0)
1710           break;
1711         value=(const char *) NULL;
1712         if ((image_info != (const ImageInfo *) NULL) &&
1713             (image != (const Image *) NULL))
1714           value=GetMagickProperty(image_info,image,pattern,exception);
1715         else
1716           if (image != (Image *) NULL)
1717             value=GetImageProperty(image,pattern,exception);
1718           else
1719             if (image_info != (ImageInfo *) NULL)
1720               value=GetImageOption(image_info,pattern);
1721         if (value == (const char *) NULL)
1722           break;
1723         q--;
1724         c=(*q);
1725         *q='\0';
1726         (void) CopyMagickString(filename+(p-format-length),value,(size_t)
1727           (MaxTextExtent-(p-format-length)));
1728         length+=strlen(pattern)-1;
1729         *q=c;
1730         (void) ConcatenateMagickString(filename,r+1,MaxTextExtent);
1731         canonical=MagickTrue;
1732         if (*(q-1) != '%')
1733           break;
1734         p++;
1735         break;
1736       }
1737       default:
1738         break;
1739     }
1740   }
1741   for (q=filename; *q != '\0'; q++)
1742     if ((*q == '%') && (*(q+1) == '%'))
1743       {
1744         (void) CopyMagickString(q,q+1,(size_t) (MaxTextExtent-(q-filename)));
1745         canonical=MagickTrue;
1746       }
1747   if (canonical == MagickFalse)
1748     (void) CopyMagickString(filename,format,MaxTextExtent);
1749   return(strlen(filename));
1750 }
1751 \f
1752 /*
1753 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1754 %                                                                             %
1755 %                                                                             %
1756 %                                                                             %
1757 %   I s H i g h D y n a m i c R a n g e I m a g e                             %
1758 %                                                                             %
1759 %                                                                             %
1760 %                                                                             %
1761 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1762 %
1763 %  IsHighDynamicRangeImage() returns MagickTrue if any pixel component is
1764 %  non-integer or exceeds the bounds of the quantum depth (e.g. for Q16
1765 %  0..65535.
1766 %
1767 %  The format of the IsHighDynamicRangeImage method is:
1768 %
1769 %      MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1770 %        ExceptionInfo *exception)
1771 %
1772 %  A description of each parameter follows:
1773 %
1774 %    o image: the image.
1775 %
1776 %    o exception: return any errors or warnings in this structure.
1777 %
1778 */
1779 MagickExport MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1780   ExceptionInfo *exception)
1781 {
1782 #if !defined(MAGICKCORE_HDRI_SUPPORT)
1783   (void) image;
1784   (void) exception;
1785   return(MagickFalse);
1786 #else
1787   CacheView
1788     *image_view;
1789
1790   MagickBooleanType
1791     status;
1792
1793   ssize_t
1794     y;
1795
1796   assert(image != (Image *) NULL);
1797   assert(image->signature == MagickSignature);
1798   if (image->debug != MagickFalse)
1799     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1800   status=MagickTrue;
1801   image_view=AcquireCacheView(image);
1802 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1803   #pragma omp parallel for schedule(static,4) shared(status)
1804 #endif
1805   for (y=0; y < (ssize_t) image->rows; y++)
1806   {
1807     PixelInfo
1808       pixel;
1809
1810     register const Quantum
1811       *p;
1812
1813     register ssize_t
1814       x;
1815
1816     if (status == MagickFalse)
1817       continue;
1818     p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1819     if (p == (const Quantum *) NULL)
1820       {
1821         status=MagickFalse;
1822         continue;
1823       }
1824     for (x=0; x < (ssize_t) image->columns; x++)
1825     {
1826       PixelTrait
1827         traits;
1828
1829       register ssize_t
1830         i;
1831
1832       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1833       {
1834         MagickRealType
1835           pixel;
1836
1837         traits=GetPixelChannelMapTraits(image,i);
1838         if (traits == UndefinedPixelTrait)
1839           continue;
1840         pixel=(MagickRealType) p[i];
1841         if ((pixel < 0.0) || (pixel > QuantumRange) ||
1842             (pixel != (QuantumAny) pixel))
1843           break;
1844       }
1845       p+=GetPixelChannels(image);
1846       if (i < (ssize_t) GetPixelChannels(image))
1847         status=MagickFalse;
1848     }
1849     if (x < (ssize_t) image->columns)
1850       status=MagickFalse;
1851   }
1852   image_view=DestroyCacheView(image_view);
1853   return(status != MagickFalse ? MagickFalse : MagickTrue);
1854 #endif
1855 }
1856 \f
1857 /*
1858 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1859 %                                                                             %
1860 %                                                                             %
1861 %                                                                             %
1862 %     I s I m a g e O b j e c t                                               %
1863 %                                                                             %
1864 %                                                                             %
1865 %                                                                             %
1866 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1867 %
1868 %  IsImageObject() returns MagickTrue if the image sequence contains a valid
1869 %  set of image objects.
1870 %
1871 %  The format of the IsImageObject method is:
1872 %
1873 %      MagickBooleanType IsImageObject(const Image *image)
1874 %
1875 %  A description of each parameter follows:
1876 %
1877 %    o image: the image.
1878 %
1879 */
1880 MagickExport MagickBooleanType IsImageObject(const Image *image)
1881 {
1882   register const Image
1883     *p;
1884
1885   assert(image != (Image *) NULL);
1886   if (image->debug != MagickFalse)
1887     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1888   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1889     if (p->signature != MagickSignature)
1890       return(MagickFalse);
1891   return(MagickTrue);
1892 }
1893 \f
1894 /*
1895 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1896 %                                                                             %
1897 %                                                                             %
1898 %                                                                             %
1899 %     I s T a i n t I m a g e                                                 %
1900 %                                                                             %
1901 %                                                                             %
1902 %                                                                             %
1903 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1904 %
1905 %  IsTaintImage() returns MagickTrue any pixel in the image has been altered
1906 %  since it was first constituted.
1907 %
1908 %  The format of the IsTaintImage method is:
1909 %
1910 %      MagickBooleanType IsTaintImage(const Image *image)
1911 %
1912 %  A description of each parameter follows:
1913 %
1914 %    o image: the image.
1915 %
1916 */
1917 MagickExport MagickBooleanType IsTaintImage(const Image *image)
1918 {
1919   char
1920     magick[MaxTextExtent],
1921     filename[MaxTextExtent];
1922
1923   register const Image
1924     *p;
1925
1926   assert(image != (Image *) NULL);
1927   if (image->debug != MagickFalse)
1928     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1929   assert(image->signature == MagickSignature);
1930   (void) CopyMagickString(magick,image->magick,MaxTextExtent);
1931   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1932   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1933   {
1934     if (p->taint != MagickFalse)
1935       return(MagickTrue);
1936     if (LocaleCompare(p->magick,magick) != 0)
1937       return(MagickTrue);
1938     if (LocaleCompare(p->filename,filename) != 0)
1939       return(MagickTrue);
1940   }
1941   return(MagickFalse);
1942 }
1943 \f
1944 /*
1945 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1946 %                                                                             %
1947 %                                                                             %
1948 %                                                                             %
1949 %   M o d i f y I m a g e                                                     %
1950 %                                                                             %
1951 %                                                                             %
1952 %                                                                             %
1953 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1954 %
1955 %  ModifyImage() ensures that there is only a single reference to the image
1956 %  to be modified, updating the provided image pointer to point to a clone of
1957 %  the original image if necessary.
1958 %
1959 %  The format of the ModifyImage method is:
1960 %
1961 %      MagickBooleanType ModifyImage(Image *image,ExceptionInfo *exception)
1962 %
1963 %  A description of each parameter follows:
1964 %
1965 %    o image: the image.
1966 %
1967 %    o exception: return any errors or warnings in this structure.
1968 %
1969 */
1970 MagickExport MagickBooleanType ModifyImage(Image **image,
1971   ExceptionInfo *exception)
1972 {
1973   Image
1974     *clone_image;
1975
1976   assert(image != (Image **) NULL);
1977   assert(*image != (Image *) NULL);
1978   assert((*image)->signature == MagickSignature);
1979   if ((*image)->debug != MagickFalse)
1980     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1981   if (GetImageReferenceCount(*image) <= 1)
1982     return(MagickTrue);
1983   clone_image=CloneImage(*image,0,0,MagickTrue,exception);
1984   LockSemaphoreInfo((*image)->semaphore);
1985   (*image)->reference_count--;
1986   UnlockSemaphoreInfo((*image)->semaphore);
1987   *image=clone_image;
1988   return(MagickTrue);
1989 }
1990 \f
1991 /*
1992 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1993 %                                                                             %
1994 %                                                                             %
1995 %                                                                             %
1996 %   N e w M a g i c k I m a g e                                               %
1997 %                                                                             %
1998 %                                                                             %
1999 %                                                                             %
2000 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2001 %
2002 %  NewMagickImage() creates a blank image canvas of the specified size and
2003 %  background color.
2004 %
2005 %  The format of the NewMagickImage method is:
2006 %
2007 %      Image *NewMagickImage(const ImageInfo *image_info,
2008 %        const size_t width,const size_t height,const PixelInfo *background,
2009 %        ExceptionInfo *exception)
2010 %
2011 %  A description of each parameter follows:
2012 %
2013 %    o image: the image.
2014 %
2015 %    o width: the image width.
2016 %
2017 %    o height: the image height.
2018 %
2019 %    o background: the image color.
2020 %
2021 %    o exception: return any errors or warnings in this structure.
2022 %
2023 */
2024 MagickExport Image *NewMagickImage(const ImageInfo *image_info,
2025   const size_t width,const size_t height,const PixelInfo *background,
2026   ExceptionInfo *exception)
2027 {
2028   CacheView
2029     *image_view;
2030
2031   Image
2032     *image;
2033
2034   MagickBooleanType
2035     status;
2036
2037   ssize_t
2038     y;
2039
2040   assert(image_info != (const ImageInfo *) NULL);
2041   if (image_info->debug != MagickFalse)
2042     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2043   assert(image_info->signature == MagickSignature);
2044   assert(background != (const PixelInfo *) NULL);
2045   image=AcquireImage(image_info,exception);
2046   image->columns=width;
2047   image->rows=height;
2048   image->colorspace=background->colorspace;
2049   image->matte=background->matte;
2050   image->fuzz=background->fuzz;
2051   image->depth=background->depth;
2052   status=MagickTrue;
2053   image_view=AcquireCacheView(image);
2054 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2055   #pragma omp parallel for schedule(static,4) shared(status)
2056 #endif
2057   for (y=0; y < (ssize_t) image->rows; y++)
2058   {
2059     register Quantum
2060       *restrict q;
2061
2062     register ssize_t
2063       x;
2064
2065     if (status == MagickFalse)
2066       continue;
2067     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2068     if (q == (Quantum *) NULL)
2069       {
2070         status=MagickFalse;
2071         continue;
2072       }
2073     for (x=0; x < (ssize_t) image->columns; x++)
2074     {
2075       SetPixelInfoPixel(image,background,q);
2076       q+=GetPixelChannels(image);
2077     }
2078     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2079       status=MagickFalse;
2080   }
2081   image_view=DestroyCacheView(image_view);
2082   if (status == MagickFalse)
2083     image=DestroyImage(image);
2084   return(image);
2085 }
2086 \f
2087 /*
2088 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2089 %                                                                             %
2090 %                                                                             %
2091 %                                                                             %
2092 %   R e f e r e n c e I m a g e                                               %
2093 %                                                                             %
2094 %                                                                             %
2095 %                                                                             %
2096 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2097 %
2098 %  ReferenceImage() increments the reference count associated with an image
2099 %  returning a pointer to the image.
2100 %
2101 %  The format of the ReferenceImage method is:
2102 %
2103 %      Image *ReferenceImage(Image *image)
2104 %
2105 %  A description of each parameter follows:
2106 %
2107 %    o image: the image.
2108 %
2109 */
2110 MagickExport Image *ReferenceImage(Image *image)
2111 {
2112   assert(image != (Image *) NULL);
2113   if (image->debug != MagickFalse)
2114     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2115   assert(image->signature == MagickSignature);
2116   LockSemaphoreInfo(image->semaphore);
2117   image->reference_count++;
2118   UnlockSemaphoreInfo(image->semaphore);
2119   return(image);
2120 }
2121 \f
2122 /*
2123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2124 %                                                                             %
2125 %                                                                             %
2126 %                                                                             %
2127 %   R e s e t I m a g e P a g e                                               %
2128 %                                                                             %
2129 %                                                                             %
2130 %                                                                             %
2131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2132 %
2133 %  ResetImagePage() resets the image page canvas and position.
2134 %
2135 %  The format of the ResetImagePage method is:
2136 %
2137 %      MagickBooleanType ResetImagePage(Image *image,const char *page)
2138 %
2139 %  A description of each parameter follows:
2140 %
2141 %    o image: the image.
2142 %
2143 %    o page: the relative page specification.
2144 %
2145 */
2146 MagickExport MagickBooleanType ResetImagePage(Image *image,const char *page)
2147 {
2148   MagickStatusType
2149     flags;
2150
2151   RectangleInfo
2152     geometry;
2153
2154   assert(image != (Image *) NULL);
2155   assert(image->signature == MagickSignature);
2156   if (image->debug != MagickFalse)
2157     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2158   flags=ParseAbsoluteGeometry(page,&geometry);
2159   if ((flags & WidthValue) != 0)
2160     {
2161       if ((flags & HeightValue) == 0)
2162         geometry.height=geometry.width;
2163       image->page.width=geometry.width;
2164       image->page.height=geometry.height;
2165     }
2166   if ((flags & AspectValue) != 0)
2167     {
2168       if ((flags & XValue) != 0)
2169         image->page.x+=geometry.x;
2170       if ((flags & YValue) != 0)
2171         image->page.y+=geometry.y;
2172     }
2173   else
2174     {
2175       if ((flags & XValue) != 0)
2176         {
2177           image->page.x=geometry.x;
2178           if ((image->page.width == 0) && (geometry.x > 0))
2179             image->page.width=image->columns+geometry.x;
2180         }
2181       if ((flags & YValue) != 0)
2182         {
2183           image->page.y=geometry.y;
2184           if ((image->page.height == 0) && (geometry.y > 0))
2185             image->page.height=image->rows+geometry.y;
2186         }
2187     }
2188   return(MagickTrue);
2189 }
2190 \f
2191 /*
2192 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2193 %                                                                             %
2194 %                                                                             %
2195 %                                                                             %
2196 %     S e p a r a t e I m a g e C h a n n e l                                 %
2197 %                                                                             %
2198 %                                                                             %
2199 %                                                                             %
2200 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2201 %
2202 %  SeparateImage() separates a channel from the image and returns it as
2203 %  a grayscale image.  A channel is a particular color component of each pixel
2204 %  in the image.
2205 %
2206 %  The format of the SeparateImage method is:
2207 %
2208 %      MagickBooleanType SeparateImage(Image *image,ExceptionInfo *exception)
2209 %
2210 %  A description of each parameter follows:
2211 %
2212 %    o image: the image.
2213 %
2214 %    o exception: return any errors or warnings in this structure.
2215 %
2216 */
2217 MagickExport MagickBooleanType SeparateImage(Image *image,
2218   ExceptionInfo *exception)
2219 {
2220 #define SeparateImageTag  "Separate/Image"
2221
2222   CacheView
2223     *image_view;
2224
2225   MagickBooleanType
2226     status;
2227
2228   MagickOffsetType
2229     progress;
2230
2231   ssize_t
2232     y;
2233
2234   assert(image != (Image *) NULL);
2235   assert(image->signature == MagickSignature);
2236   if (image->debug != MagickFalse)
2237     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2238   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2239     return(MagickFalse);
2240   /*
2241     Separate image channels.
2242   */
2243   status=MagickTrue;
2244   progress=0;
2245   image_view=AcquireCacheView(image);
2246 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2247   #pragma omp parallel for schedule(static,4) shared(progress,status)
2248 #endif
2249   for (y=0; y < (ssize_t) image->rows; y++)
2250   {
2251     register Quantum
2252       *restrict q;
2253
2254     register ssize_t
2255       x;
2256
2257     if (status == MagickFalse)
2258       continue;
2259     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2260     if (q == (Quantum *) NULL)
2261       {
2262         status=MagickFalse;
2263         continue;
2264       }
2265     for (x=0; x < (ssize_t) image->columns; x++)
2266     {
2267       register ssize_t
2268         i;
2269
2270       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2271       {
2272         PixelChannel
2273           channel;
2274
2275         PixelTrait
2276           traits;
2277
2278         register ssize_t
2279           j;
2280
2281         channel=GetPixelChannelMapChannel(image,i);
2282         traits=GetPixelChannelMapTraits(image,channel);
2283         if (traits == UndefinedPixelTrait)
2284           continue;
2285         if ((traits & UpdatePixelTrait) != 0)
2286           for (j=0; j < (ssize_t) GetPixelChannels(image); j++)
2287             q[j]=q[i];
2288       }
2289       q+=GetPixelChannels(image);
2290     }
2291     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2292       status=MagickFalse;
2293     if (image->progress_monitor != (MagickProgressMonitor) NULL)
2294       {
2295         MagickBooleanType
2296           proceed;
2297
2298 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2299         #pragma omp critical (MagickCore_SeparateImage)
2300 #endif
2301         proceed=SetImageProgress(image,SeparateImageTag,progress++,image->rows);
2302         if (proceed == MagickFalse)
2303           status=MagickFalse;
2304       }
2305   }
2306   image_view=DestroyCacheView(image_view);
2307   (void) SetImageColorspace(image,RGBColorspace,exception);
2308   return(status);
2309 }
2310 \f
2311 /*
2312 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2313 %                                                                             %
2314 %                                                                             %
2315 %                                                                             %
2316 %     S e p a r a t e I m a g e s                                             %
2317 %                                                                             %
2318 %                                                                             %
2319 %                                                                             %
2320 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2321 %
2322 %  SeparateImages() returns a separate grayscale image for each channel
2323 %  specified.
2324 %
2325 %  The format of the SeparateImages method is:
2326 %
2327 %      MagickBooleanType SeparateImages(const Image *image,
2328 %        ExceptionInfo *exception)
2329 %
2330 %  A description of each parameter follows:
2331 %
2332 %    o image: the image.
2333 %
2334 %    o exception: return any errors or warnings in this structure.
2335 %
2336 */
2337 MagickExport Image *SeparateImages(const Image *image,ExceptionInfo *exception)
2338 {
2339   ChannelType
2340     channel_mask;
2341
2342   Image
2343     *images,
2344     *separate_image;
2345
2346   register ssize_t
2347     i;
2348
2349   assert(image != (Image *) NULL);
2350   assert(image->signature == MagickSignature);
2351   if (image->debug != MagickFalse)
2352     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2353   images=NewImageList();
2354   for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2355   {
2356     PixelChannel
2357       channel;
2358
2359     PixelTrait
2360       traits;
2361
2362     channel=GetPixelChannelMapChannel(image,i);
2363     traits=GetPixelChannelMapTraits(image,channel);
2364     if (traits == UndefinedPixelTrait)
2365       continue;
2366     if ((traits & UpdatePixelTrait) != 0)
2367       {
2368         separate_image=CloneImage(image,0,0,MagickTrue,exception);
2369         if (separate_image != (Image *) NULL)
2370           {
2371             channel_mask=SetPixelChannelMask(separate_image,
2372               (ChannelType) (1 << i));
2373             (void) SeparateImage(separate_image,exception);
2374             (void) SetPixelChannelMapMask(separate_image,channel_mask);
2375             AppendImageToList(&images,separate_image);
2376           }
2377       }
2378   }
2379   return(images);
2380 }
2381 \f
2382 /*
2383 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2384 %                                                                             %
2385 %                                                                             %
2386 %                                                                             %
2387 %   S e t I m a g e A l p h a C h a n n e l                                   %
2388 %                                                                             %
2389 %                                                                             %
2390 %                                                                             %
2391 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2392 %
2393 %  SetImageAlphaChannel() activates, deactivates, resets, or sets the alpha
2394 %  channel.
2395 %
2396 %  The format of the SetImageAlphaChannel method is:
2397 %
2398 %      MagickBooleanType SetImageAlphaChannel(Image *image,
2399 %        const AlphaChannelType alpha_type,ExceptionInfo *exception)
2400 %
2401 %  A description of each parameter follows:
2402 %
2403 %    o image: the image.
2404 %
2405 %    o alpha_type:  The alpha channel type: ActivateAlphaChannel,
2406 %      CopyAlphaChannel, DeactivateAlphaChannel, ExtractAlphaChannel,
2407 %      OpaqueAlphaChannel, SetAlphaChannel, ShapeAlphaChannel, and
2408 %      TransparentAlphaChannel.
2409 %
2410 %    o exception: return any errors or warnings in this structure.
2411 %
2412 */
2413 MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
2414   const AlphaChannelType alpha_type,ExceptionInfo *exception)
2415 {
2416   ChannelType
2417     channel_mask;
2418
2419   MagickBooleanType
2420     status;
2421
2422   assert(image != (Image *) NULL);
2423   if (image->debug != MagickFalse)
2424     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2425   assert(image->signature == MagickSignature);
2426   status=MagickTrue;
2427   switch (alpha_type)
2428   {
2429     case ActivateAlphaChannel:
2430     {
2431       image->matte=MagickTrue;
2432       break;
2433     }
2434     case BackgroundAlphaChannel:
2435     {
2436       CacheView
2437         *image_view;
2438
2439       PixelInfo
2440         background;
2441
2442       ssize_t
2443         y;
2444
2445       /*
2446         Set transparent pixels to background color.
2447       */
2448       image->matte=MagickTrue;
2449       if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2450         break;
2451       background=image->background_color;
2452       image_view=AcquireCacheView(image);
2453 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2454       #pragma omp parallel for schedule(static,4) shared(status)
2455 #endif
2456       for (y=0; y < (ssize_t) image->rows; y++)
2457       {
2458         register Quantum
2459           *restrict q;
2460
2461         register ssize_t
2462           x;
2463
2464         if (status == MagickFalse)
2465           continue;
2466         q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
2467           exception);
2468         if (q == (Quantum *) NULL)
2469           {
2470             status=MagickFalse;
2471             continue;
2472           }
2473         for (x=0; x < (ssize_t) image->columns; x++)
2474         {
2475           if (GetPixelAlpha(image,q) == TransparentAlpha)
2476             SetPixelInfoPixel(image,&background,q);
2477           q+=GetPixelChannels(image);
2478         }
2479         if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2480           status=MagickFalse;
2481       }
2482       image_view=DestroyCacheView(image_view);
2483       return(status);
2484     }
2485     case DeactivateAlphaChannel:
2486     {
2487       image->matte=MagickFalse;
2488       break;
2489     }
2490     case ShapeAlphaChannel:
2491     case CopyAlphaChannel:
2492     {
2493       /*
2494         Special usage case for SeparateImage(): copy grayscale color to
2495         the alpha channel.
2496       */
2497       channel_mask=SetPixelChannelMask(image,GrayChannel);
2498       status=SeparateImage(image,exception);
2499       (void) SetPixelChannelMask(image,channel_mask);
2500       image->matte=MagickTrue; /* make sure transparency is now on! */
2501       if (alpha_type == ShapeAlphaChannel)
2502         {
2503           PixelInfo
2504             background;
2505
2506           /*
2507             Reset all color channels to background color.
2508           */
2509           background=image->background_color;
2510           (void) LevelImageColors(image,&background,&background,MagickTrue,
2511             exception);
2512         }
2513       break;
2514     }
2515     case ExtractAlphaChannel:
2516     {
2517       channel_mask=SetPixelChannelMask(image,AlphaChannel);
2518       status=SeparateImage(image,exception);
2519       (void) SetPixelChannelMask(image,channel_mask);
2520       image->matte=MagickFalse;
2521       break;
2522     }
2523     case OpaqueAlphaChannel:
2524     {
2525       status=SetImageAlpha(image,OpaqueAlpha,exception);
2526       break;
2527     }
2528     case TransparentAlphaChannel:
2529     {
2530       status=SetImageAlpha(image,TransparentAlpha,exception);
2531       break;
2532     }
2533     case SetAlphaChannel:
2534     {
2535       if (image->matte == MagickFalse)
2536         status=SetImageAlpha(image,OpaqueAlpha,exception);
2537       break;
2538     }
2539     case UndefinedAlphaChannel:
2540       break;
2541   }
2542   if (status == MagickFalse)
2543     return(status);
2544   return(SyncImagePixelCache(image,exception));
2545 }
2546 \f
2547 /*
2548 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2549 %                                                                             %
2550 %                                                                             %
2551 %                                                                             %
2552 %   S e t I m a g e B a c k g r o u n d C o l o r                             %
2553 %                                                                             %
2554 %                                                                             %
2555 %                                                                             %
2556 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2557 %
2558 %  SetImageBackgroundColor() initializes the image pixels to the image
2559 %  background color.  The background color is defined by the background_color
2560 %  member of the image structure.
2561 %
2562 %  The format of the SetImage method is:
2563 %
2564 %      MagickBooleanType SetImageBackgroundColor(Image *image,
2565 %        ExceptionInfo *exception)
2566 %
2567 %  A description of each parameter follows:
2568 %
2569 %    o image: the image.
2570 %
2571 %    o exception: return any errors or warnings in this structure.
2572 %
2573 */
2574 MagickExport MagickBooleanType SetImageBackgroundColor(Image *image,
2575   ExceptionInfo *exception)
2576 {
2577   CacheView
2578     *image_view;
2579
2580   MagickBooleanType
2581     status;
2582
2583   ssize_t
2584     y;
2585
2586   assert(image != (Image *) NULL);
2587   if (image->debug != MagickFalse)
2588     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2589   assert(image->signature == MagickSignature);
2590   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2591     return(MagickFalse);
2592   /*
2593     Set image background color.
2594   */
2595   status=MagickTrue;
2596   image_view=AcquireCacheView(image);
2597   for (y=0; y < (ssize_t) image->rows; y++)
2598   {
2599     register Quantum
2600       *restrict q;
2601
2602     register ssize_t
2603       x;
2604
2605     if (status == MagickFalse)
2606       continue;
2607     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2608     if (q == (Quantum *) NULL)
2609       {
2610         status=MagickFalse;
2611         continue;
2612       }
2613     for (x=0; x < (ssize_t) image->columns; x++)
2614     {
2615       SetPixelInfoPixel(image,&image->background_color,q);
2616       q+=GetPixelChannels(image);
2617     }
2618     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2619       status=MagickFalse;
2620   }
2621   image_view=DestroyCacheView(image_view);
2622   return(status);
2623 }
2624 \f
2625 /*
2626 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2627 %                                                                             %
2628 %                                                                             %
2629 %                                                                             %
2630 %   S e t I m a g e C o l o r                                                 %
2631 %                                                                             %
2632 %                                                                             %
2633 %                                                                             %
2634 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2635 %
2636 %  SetImageColor() set the entire image canvas to the specified color.
2637 %
2638 %  The format of the SetImageColor method is:
2639 %
2640 %      MagickBooleanType SetImageColor(Image *image,const PixelInfo *color,
2641 %        ExeptionInfo *exception)
2642 %
2643 %  A description of each parameter follows:
2644 %
2645 %    o image: the image.
2646 %
2647 %    o background: the image color.
2648 %
2649 %    o exception: return any errors or warnings in this structure.
2650 %
2651 */
2652 MagickExport MagickBooleanType SetImageColor(Image *image,
2653   const PixelInfo *color,ExceptionInfo *exception)
2654 {
2655   CacheView
2656     *image_view;
2657
2658   MagickBooleanType
2659     status;
2660
2661   ssize_t
2662     y;
2663
2664   assert(image != (Image *) NULL);
2665   if (image->debug != MagickFalse)
2666     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2667   assert(image->signature == MagickSignature);
2668   assert(color != (const PixelInfo *) NULL);
2669   image->colorspace=color->colorspace;
2670   image->matte=color->matte;
2671   image->fuzz=color->fuzz;
2672   image->depth=color->depth;
2673   status=MagickTrue;
2674   image_view=AcquireCacheView(image);
2675 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2676   #pragma omp parallel for schedule(static,4) shared(status)
2677 #endif
2678   for (y=0; y < (ssize_t) image->rows; y++)
2679   {
2680     register Quantum
2681       *restrict q;
2682
2683     register ssize_t
2684       x;
2685
2686     if (status == MagickFalse)
2687       continue;
2688     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2689     if (q == (Quantum *) NULL)
2690       {
2691         status=MagickFalse;
2692         continue;
2693       }
2694     for (x=0; x < (ssize_t) image->columns; x++)
2695     {
2696       SetPixelInfoPixel(image,color,q);
2697       q+=GetPixelChannels(image);
2698     }
2699     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2700       status=MagickFalse;
2701   }
2702   image_view=DestroyCacheView(image_view);
2703   return(status);
2704 }
2705 \f
2706 /*
2707 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2708 %                                                                             %
2709 %                                                                             %
2710 %                                                                             %
2711 %   S e t I m a g e S t o r a g e C l a s s                                   %
2712 %                                                                             %
2713 %                                                                             %
2714 %                                                                             %
2715 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2716 %
2717 %  SetImageStorageClass() sets the image class: DirectClass for true color
2718 %  images or PseudoClass for colormapped images.
2719 %
2720 %  The format of the SetImageStorageClass method is:
2721 %
2722 %      MagickBooleanType SetImageStorageClass(Image *image,
2723 %        const ClassType storage_class,ExceptionInfo *exception)
2724 %
2725 %  A description of each parameter follows:
2726 %
2727 %    o image: the image.
2728 %
2729 %    o storage_class:  The image class.
2730 %
2731 %    o exception: return any errors or warnings in this structure.
2732 %
2733 */
2734 MagickExport MagickBooleanType SetImageStorageClass(Image *image,
2735   const ClassType storage_class,ExceptionInfo *exception)
2736 {
2737   image->storage_class=storage_class;
2738   return(SyncImagePixelCache(image,exception));
2739 }
2740 \f
2741 /*
2742 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2743 %                                                                             %
2744 %                                                                             %
2745 %                                                                             %
2746 %   S e t I m a g e C l i p M a s k                                           %
2747 %                                                                             %
2748 %                                                                             %
2749 %                                                                             %
2750 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2751 %
2752 %  SetImageClipMask() associates a clip path with the image.  The clip path
2753 %  must be the same dimensions as the image.  Set any pixel component of
2754 %  the clip path to TransparentAlpha to prevent that corresponding image
2755 %  pixel component from being updated when SyncAuthenticPixels() is applied.
2756 %
2757 %  The format of the SetImageClipMask method is:
2758 %
2759 %      MagickBooleanType SetImageClipMask(Image *image,const Image *clip_mask,
2760 %        ExceptionInfo *exception)
2761 %
2762 %  A description of each parameter follows:
2763 %
2764 %    o image: the image.
2765 %
2766 %    o clip_mask: the image clip path.
2767 %
2768 %    o exception: return any errors or warnings in this structure.
2769 %
2770 */
2771 MagickExport MagickBooleanType SetImageClipMask(Image *image,
2772   const Image *clip_mask,ExceptionInfo *exception)
2773 {
2774   assert(image != (Image *) NULL);
2775   if (image->debug != MagickFalse)
2776     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2777   assert(image->signature == MagickSignature);
2778   if (clip_mask != (const Image *) NULL)
2779     if ((clip_mask->columns != image->columns) ||
2780         (clip_mask->rows != image->rows))
2781       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
2782   if (image->clip_mask != (Image *) NULL)
2783     image->clip_mask=DestroyImage(image->clip_mask);
2784   image->clip_mask=NewImageList();
2785   if (clip_mask == (Image *) NULL)
2786     return(MagickTrue);
2787   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2788     return(MagickFalse);
2789   image->clip_mask=CloneImage(clip_mask,0,0,MagickTrue,exception);
2790   if (image->clip_mask == (Image *) NULL)
2791     return(MagickFalse);
2792   return(MagickTrue);
2793 }
2794 \f
2795 /*
2796 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2797 %                                                                             %
2798 %                                                                             %
2799 %                                                                             %
2800 %   S e t I m a g e E x t e n t                                               %
2801 %                                                                             %
2802 %                                                                             %
2803 %                                                                             %
2804 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2805 %
2806 %  SetImageExtent() sets the image size (i.e. columns & rows).
2807 %
2808 %  The format of the SetImageExtent method is:
2809 %
2810 %      MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2811 %        const size_t rows,ExceptionInfo *exception)
2812 %
2813 %  A description of each parameter follows:
2814 %
2815 %    o image: the image.
2816 %
2817 %    o columns:  The image width in pixels.
2818 %
2819 %    o rows:  The image height in pixels.
2820 %
2821 %    o exception: return any errors or warnings in this structure.
2822 %
2823 */
2824 MagickExport MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2825   const size_t rows,ExceptionInfo *exception)
2826 {
2827   if ((columns == 0) || (rows == 0))
2828     return(MagickFalse);
2829   image->columns=columns;
2830   image->rows=rows;
2831   return(SyncImagePixelCache(image,exception));
2832 }
2833 \f
2834 /*
2835 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2836 %                                                                             %
2837 %                                                                             %
2838 %                                                                             %
2839 +   S e t I m a g e I n f o                                                   %
2840 %                                                                             %
2841 %                                                                             %
2842 %                                                                             %
2843 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2844 %
2845 %  SetImageInfo() initializes the `magick' field of the ImageInfo structure.
2846 %  It is set to a type of image format based on the prefix or suffix of the
2847 %  filename.  For example, `ps:image' returns PS indicating a Postscript image.
2848 %  JPEG is returned for this filename: `image.jpg'.  The filename prefix has
2849 %  precendence over the suffix.  Use an optional index enclosed in brackets
2850 %  after a file name to specify a desired scene of a multi-resolution image
2851 %  format like Photo CD (e.g. img0001.pcd[4]).  A True (non-zero) return value
2852 %  indicates success.
2853 %
2854 %  The format of the SetImageInfo method is:
2855 %
2856 %      MagickBooleanType SetImageInfo(ImageInfo *image_info,
2857 %        const unsigned int frames,ExceptionInfo *exception)
2858 %
2859 %  A description of each parameter follows:
2860 %
2861 %    o image_info: the image info.
2862 %
2863 %    o frames: the number of images you intend to write.
2864 %
2865 %    o exception: return any errors or warnings in this structure.
2866 %
2867 */
2868 MagickExport MagickBooleanType SetImageInfo(ImageInfo *image_info,
2869   const unsigned int frames,ExceptionInfo *exception)
2870 {
2871   char
2872     extension[MaxTextExtent],
2873     filename[MaxTextExtent],
2874     magic[MaxTextExtent],
2875     *q,
2876     subimage[MaxTextExtent];
2877
2878   const MagicInfo
2879     *magic_info;
2880
2881   const MagickInfo
2882     *magick_info;
2883
2884   ExceptionInfo
2885     *sans_exception;
2886
2887   Image
2888     *image;
2889
2890   MagickBooleanType
2891     status;
2892
2893   register const char
2894     *p;
2895
2896   ssize_t
2897     count;
2898
2899   unsigned char
2900     magick[2*MaxTextExtent];
2901
2902   /*
2903     Look for 'image.format' in filename.
2904   */
2905   assert(image_info != (ImageInfo *) NULL);
2906   assert(image_info->signature == MagickSignature);
2907   if (image_info->debug != MagickFalse)
2908     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2909       image_info->filename);
2910   *subimage='\0';
2911   if (frames == 0)
2912     {
2913       GetPathComponent(image_info->filename,SubimagePath,subimage);
2914       if (*subimage != '\0')
2915         {
2916           /*
2917             Look for scene specification (e.g. img0001.pcd[4]).
2918           */
2919           if (IsSceneGeometry(subimage,MagickFalse) == MagickFalse)
2920             {
2921               if (IsGeometry(subimage) != MagickFalse)
2922                 (void) CloneString(&image_info->extract,subimage);
2923             }
2924           else
2925             {
2926               size_t
2927                 first,
2928                 last;
2929
2930               (void) CloneString(&image_info->scenes,subimage);
2931               image_info->scene=StringToUnsignedLong(image_info->scenes);
2932               image_info->number_scenes=image_info->scene;
2933               p=image_info->scenes;
2934               for (q=(char *) image_info->scenes; *q != '\0'; p++)
2935               {
2936                 while ((isspace((int) ((unsigned char) *p)) != 0) ||
2937                        (*p == ','))
2938                   p++;
2939                 first=(size_t) strtol(p,&q,10);
2940                 last=first;
2941                 while (isspace((int) ((unsigned char) *q)) != 0)
2942                   q++;
2943                 if (*q == '-')
2944                   last=(size_t) strtol(q+1,&q,10);
2945                 if (first > last)
2946                   Swap(first,last);
2947                 if (first < image_info->scene)
2948                   image_info->scene=first;
2949                 if (last > image_info->number_scenes)
2950                   image_info->number_scenes=last;
2951                 p=q;
2952               }
2953               image_info->number_scenes-=image_info->scene-1;
2954             }
2955         }
2956     }
2957   *extension='\0';
2958   GetPathComponent(image_info->filename,ExtensionPath,extension);
2959 #if defined(MAGICKCORE_ZLIB_DELEGATE)
2960   if (*extension != '\0')
2961     if ((LocaleCompare(extension,"gz") == 0) ||
2962         (LocaleCompare(extension,"Z") == 0) ||
2963         (LocaleCompare(extension,"wmz") == 0))
2964       {
2965         char
2966           path[MaxTextExtent];
2967
2968         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2969         path[strlen(path)-strlen(extension)-1]='\0';
2970         GetPathComponent(path,ExtensionPath,extension);
2971       }
2972 #endif
2973 #if defined(MAGICKCORE_BZLIB_DELEGATE)
2974   if (*extension != '\0')
2975     if (LocaleCompare(extension,"bz2") == 0)
2976       {
2977         char
2978           path[MaxTextExtent];
2979
2980         (void) CopyMagickString(path,image_info->filename,MaxTextExtent);
2981         path[strlen(path)-strlen(extension)-1]='\0';
2982         GetPathComponent(path,ExtensionPath,extension);
2983       }
2984 #endif
2985   image_info->affirm=MagickFalse;
2986   sans_exception=AcquireExceptionInfo();
2987   if (*extension != '\0')
2988     {
2989       MagickFormatType
2990         format_type;
2991
2992       register ssize_t
2993         i;
2994
2995       static const char
2996         *format_type_formats[] =
2997         {
2998           "AUTOTRACE",
2999           "BROWSE",
3000           "DCRAW",
3001           "EDIT",
3002           "EPHEMERAL",
3003           "LAUNCH",
3004           "MPEG:DECODE",
3005           "MPEG:ENCODE",
3006           "PRINT",
3007           "PS:ALPHA",
3008           "PS:CMYK",
3009           "PS:COLOR",
3010           "PS:GRAY",
3011           "PS:MONO",
3012           "SCAN",
3013           "SHOW",
3014           "WIN",
3015           (char *) NULL
3016         };
3017
3018       /*
3019         User specified image format.
3020       */
3021       (void) CopyMagickString(magic,extension,MaxTextExtent);
3022       LocaleUpper(magic);
3023       /*
3024         Look for explicit image formats.
3025       */
3026       format_type=UndefinedFormatType;
3027       i=0;
3028       while ((format_type == UndefinedFormatType) &&
3029              (format_type_formats[i] != (char *) NULL))
3030       {
3031         if ((*magic == *format_type_formats[i]) &&
3032             (LocaleCompare(magic,format_type_formats[i]) == 0))
3033           format_type=ExplicitFormatType;
3034         i++;
3035       }
3036       magick_info=GetMagickInfo(magic,sans_exception);
3037       if ((magick_info != (const MagickInfo *) NULL) &&
3038           (magick_info->format_type != UndefinedFormatType))
3039         format_type=magick_info->format_type;
3040       if (format_type == UndefinedFormatType)
3041         (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3042       else
3043         if (format_type == ExplicitFormatType)
3044           {
3045             image_info->affirm=MagickTrue;
3046             (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3047           }
3048       if (LocaleCompare(magic,"RGB") == 0)
3049         image_info->affirm=MagickFalse;  /* maybe SGI disguised as RGB */
3050     }
3051   /*
3052     Look for explicit 'format:image' in filename.
3053   */
3054   *magic='\0';
3055   GetPathComponent(image_info->filename,MagickPath,magic);
3056   if (*magic == '\0')
3057     (void) CopyMagickString(magic,image_info->magick,MaxTextExtent);
3058   else
3059     {
3060       /*
3061         User specified image format.
3062       */
3063       LocaleUpper(magic);
3064       if (IsMagickConflict(magic) == MagickFalse)
3065         {
3066           (void) CopyMagickString(image_info->magick,magic,MaxTextExtent);
3067           if (LocaleCompare(magic,"EPHEMERAL") != 0)
3068             image_info->affirm=MagickTrue;
3069           else
3070             image_info->temporary=MagickTrue;
3071         }
3072     }
3073   magick_info=GetMagickInfo(magic,sans_exception);
3074   sans_exception=DestroyExceptionInfo(sans_exception);
3075   if ((magick_info == (const MagickInfo *) NULL) ||
3076       (GetMagickEndianSupport(magick_info) == MagickFalse))
3077     image_info->endian=UndefinedEndian;
3078   GetPathComponent(image_info->filename,CanonicalPath,filename);
3079   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3080   if ((image_info->adjoin != MagickFalse) && (frames > 1))
3081     {
3082       /*
3083         Test for multiple image support (e.g. image%02d.png).
3084       */
3085       (void) InterpretImageFilename(image_info,(Image *) NULL,
3086         image_info->filename,(int) image_info->scene,filename,exception);
3087       if ((LocaleCompare(filename,image_info->filename) != 0) &&
3088           (strchr(filename,'%') == (char *) NULL))
3089         image_info->adjoin=MagickFalse;
3090     }
3091   if ((image_info->adjoin != MagickFalse) && (frames > 0))
3092     {
3093       /*
3094         Some image formats do not support multiple frames per file.
3095       */
3096       magick_info=GetMagickInfo(magic,exception);
3097       if (magick_info != (const MagickInfo *) NULL)
3098         if (GetMagickAdjoin(magick_info) == MagickFalse)
3099           image_info->adjoin=MagickFalse;
3100     }
3101   if (image_info->affirm != MagickFalse)
3102     return(MagickTrue);
3103   if (frames == 0)
3104     {
3105       /*
3106         Determine the image format from the first few bytes of the file.
3107       */
3108       image=AcquireImage(image_info,exception);
3109       (void) CopyMagickString(image->filename,image_info->filename,
3110         MaxTextExtent);
3111       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3112       if (status == MagickFalse)
3113         {
3114           image=DestroyImage(image);
3115           return(MagickFalse);
3116         }
3117       if ((IsBlobSeekable(image) == MagickFalse) ||
3118           (IsBlobExempt(image) != MagickFalse))
3119         {
3120           /*
3121             Copy standard input or pipe to temporary file.
3122           */
3123           *filename='\0';
3124           status=ImageToFile(image,filename,exception);
3125           (void) CloseBlob(image);
3126           if (status == MagickFalse)
3127             {
3128               image=DestroyImage(image);
3129               return(MagickFalse);
3130             }
3131           SetImageInfoFile(image_info,(FILE *) NULL);
3132           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
3133           status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
3134           if (status == MagickFalse)
3135             {
3136               image=DestroyImage(image);
3137               return(MagickFalse);
3138             }
3139           (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
3140           image_info->temporary=MagickTrue;
3141         }
3142       (void) ResetMagickMemory(magick,0,sizeof(magick));
3143       count=ReadBlob(image,2*MaxTextExtent,magick);
3144       (void) CloseBlob(image);
3145       image=DestroyImage(image);
3146       /*
3147         Check magic.xml configuration file.
3148       */
3149       sans_exception=AcquireExceptionInfo();
3150       magic_info=GetMagicInfo(magick,(size_t) count,sans_exception);
3151       if ((magic_info != (const MagicInfo *) NULL) &&
3152           (GetMagicName(magic_info) != (char *) NULL))
3153         {
3154           (void) CopyMagickString(image_info->magick,GetMagicName(magic_info),
3155             MaxTextExtent);
3156           magick_info=GetMagickInfo(image_info->magick,sans_exception);
3157           if ((magick_info == (const MagickInfo *) NULL) ||
3158               (GetMagickEndianSupport(magick_info) == MagickFalse))
3159             image_info->endian=UndefinedEndian;
3160           sans_exception=DestroyExceptionInfo(sans_exception);
3161           return(MagickTrue);
3162         }
3163       magick_info=GetMagickInfo(image_info->magick,sans_exception);
3164       if ((magick_info == (const MagickInfo *) NULL) ||
3165           (GetMagickEndianSupport(magick_info) == MagickFalse))
3166         image_info->endian=UndefinedEndian;
3167       sans_exception=DestroyExceptionInfo(sans_exception);
3168     }
3169   return(MagickTrue);
3170 }
3171 \f
3172 /*
3173 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3174 %                                                                             %
3175 %                                                                             %
3176 %                                                                             %
3177 %   S e t I m a g e I n f o B l o b                                           %
3178 %                                                                             %
3179 %                                                                             %
3180 %                                                                             %
3181 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3182 %
3183 %  SetImageInfoBlob() sets the image info blob member.
3184 %
3185 %  The format of the SetImageInfoBlob method is:
3186 %
3187 %      void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3188 %        const size_t length)
3189 %
3190 %  A description of each parameter follows:
3191 %
3192 %    o image_info: the image info.
3193 %
3194 %    o blob: the blob.
3195 %
3196 %    o length: the blob length.
3197 %
3198 */
3199 MagickExport void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
3200   const size_t length)
3201 {
3202   assert(image_info != (ImageInfo *) NULL);
3203   assert(image_info->signature == MagickSignature);
3204   if (image_info->debug != MagickFalse)
3205     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3206       image_info->filename);
3207   image_info->blob=(void *) blob;
3208   image_info->length=length;
3209 }
3210 \f
3211 /*
3212 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3213 %                                                                             %
3214 %                                                                             %
3215 %                                                                             %
3216 %   S e t I m a g e I n f o F i l e                                           %
3217 %                                                                             %
3218 %                                                                             %
3219 %                                                                             %
3220 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3221 %
3222 %  SetImageInfoFile() sets the image info file member.
3223 %
3224 %  The format of the SetImageInfoFile method is:
3225 %
3226 %      void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3227 %
3228 %  A description of each parameter follows:
3229 %
3230 %    o image_info: the image info.
3231 %
3232 %    o file: the file.
3233 %
3234 */
3235 MagickExport void SetImageInfoFile(ImageInfo *image_info,FILE *file)
3236 {
3237   assert(image_info != (ImageInfo *) NULL);
3238   assert(image_info->signature == MagickSignature);
3239   if (image_info->debug != MagickFalse)
3240     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3241       image_info->filename);
3242   image_info->file=file;
3243 }
3244 \f
3245 /*
3246 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3247 %                                                                             %
3248 %                                                                             %
3249 %                                                                             %
3250 %   S e t I m a g e M a s k                                                   %
3251 %                                                                             %
3252 %                                                                             %
3253 %                                                                             %
3254 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3255 %
3256 %  SetImageMask() associates a mask with the image.  The mask must be the same
3257 %  dimensions as the image.
3258 %
3259 %  The format of the SetImageMask method is:
3260 %
3261 %      MagickBooleanType SetImageMask(Image *image,const Image *mask,
3262 %        ExceptionInfo *exception)
3263 %
3264 %  A description of each parameter follows:
3265 %
3266 %    o image: the image.
3267 %
3268 %    o mask: the image mask.
3269 %
3270 %    o exception: return any errors or warnings in this structure.
3271 %
3272 */
3273 MagickExport MagickBooleanType SetImageMask(Image *image,
3274   const Image *mask,ExceptionInfo *exception)
3275 {
3276   assert(image != (Image *) NULL);
3277   if (image->debug != MagickFalse)
3278     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3279   assert(image->signature == MagickSignature);
3280   if (mask != (const Image *) NULL)
3281     if ((mask->columns != image->columns) || (mask->rows != image->rows))
3282       ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
3283   if (image->mask != (Image *) NULL)
3284     image->mask=DestroyImage(image->mask);
3285   image->mask=NewImageList();
3286   if (mask == (Image *) NULL)
3287     return(MagickTrue);
3288   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
3289     return(MagickFalse);
3290   image->mask=CloneImage(mask,0,0,MagickTrue,exception);
3291   if (image->mask == (Image *) NULL)
3292     return(MagickFalse);
3293   return(MagickTrue);
3294 }
3295 \f
3296 /*
3297 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3298 %                                                                             %
3299 %                                                                             %
3300 %                                                                             %
3301 %     S e t I m a g e A l p h a                                               %
3302 %                                                                             %
3303 %                                                                             %
3304 %                                                                             %
3305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3306 %
3307 %  SetImageAlpha() sets the alpha levels of the image.
3308 %
3309 %  The format of the SetImageAlpha method is:
3310 %
3311 %      MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3312 %        ExceptionInfo *exception)
3313 %
3314 %  A description of each parameter follows:
3315 %
3316 %    o image: the image.
3317 %
3318 %    o Alpha: the level of transparency: 0 is fully opaque and QuantumRange is
3319 %      fully transparent.
3320 %
3321 */
3322 MagickExport MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
3323   ExceptionInfo *exception)
3324 {
3325   CacheView
3326     *image_view;
3327
3328   MagickBooleanType
3329     status;
3330
3331   ssize_t
3332     y;
3333
3334   assert(image != (Image *) NULL);
3335   if (image->debug != MagickFalse)
3336     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3337   assert(image->signature == MagickSignature);
3338   image->matte=MagickTrue;
3339   status=MagickTrue;
3340   image_view=AcquireCacheView(image);
3341 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3342   #pragma omp parallel for schedule(static,4) shared(status)
3343 #endif
3344   for (y=0; y < (ssize_t) image->rows; y++)
3345   {
3346     register Quantum
3347       *restrict q;
3348
3349     register ssize_t
3350       x;
3351
3352     if (status == MagickFalse)
3353       continue;
3354     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3355     if (q == (Quantum *) NULL)
3356       {
3357         status=MagickFalse;
3358         continue;
3359       }
3360     for (x=0; x < (ssize_t) image->columns; x++)
3361     {
3362       SetPixelAlpha(image,alpha,q);
3363       q+=GetPixelChannels(image);
3364     }
3365     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3366       status=MagickFalse;
3367   }
3368   image_view=DestroyCacheView(image_view);
3369   return(status);
3370 }
3371 \f
3372 /*
3373 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3374 %                                                                             %
3375 %                                                                             %
3376 %                                                                             %
3377 %   S e t I m a g e T y p e                                                   %
3378 %                                                                             %
3379 %                                                                             %
3380 %                                                                             %
3381 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3382 %
3383 %  SetImageType() sets the type of image.  Choose from these types:
3384 %
3385 %        Bilevel        Grayscale       GrayscaleMatte
3386 %        Palette        PaletteMatte    TrueColor
3387 %        TrueColorMatte ColorSeparation ColorSeparationMatte
3388 %        OptimizeType
3389 %
3390 %  The format of the SetImageType method is:
3391 %
3392 %      MagickBooleanType SetImageType(Image *image,const ImageType type,
3393 %        ExceptionInfo *exception)
3394 %
3395 %  A description of each parameter follows:
3396 %
3397 %    o image: the image.
3398 %
3399 %    o type: Image type.
3400 %
3401 %    o exception: return any errors or warnings in this structure.
3402 %
3403 */
3404 MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type,
3405   ExceptionInfo *exception)
3406 {
3407   const char
3408     *artifact;
3409
3410   ImageInfo
3411     *image_info;
3412
3413   MagickBooleanType
3414     status;
3415
3416   QuantizeInfo
3417     *quantize_info;
3418
3419   assert(image != (Image *) NULL);
3420   if (image->debug != MagickFalse)
3421     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3422   assert(image->signature == MagickSignature);
3423   status=MagickTrue;
3424   image_info=AcquireImageInfo();
3425   image_info->dither=image->dither;
3426   artifact=GetImageArtifact(image,"dither");
3427   if (artifact != (const char *) NULL)
3428     (void) SetImageOption(image_info,"dither",artifact);
3429   switch (type)
3430   {
3431     case BilevelType:
3432     {
3433       if (IsImageMonochrome(image,exception) == MagickFalse)
3434         {
3435           quantize_info=AcquireQuantizeInfo(image_info);
3436           quantize_info->number_colors=2;
3437           quantize_info->colorspace=GRAYColorspace;
3438           status=QuantizeImage(quantize_info,image,exception);
3439           quantize_info=DestroyQuantizeInfo(quantize_info);
3440         }
3441       image->matte=MagickFalse;
3442       break;
3443     }
3444     case GrayscaleType:
3445     {
3446       if (IsImageGray(image,exception) == MagickFalse)
3447         status=TransformImageColorspace(image,GRAYColorspace,exception);
3448       image->matte=MagickFalse;
3449       break;
3450     }
3451     case GrayscaleMatteType:
3452     {
3453       if (IsImageGray(image,exception) == MagickFalse)
3454         status=TransformImageColorspace(image,GRAYColorspace,exception);
3455       if (image->matte == MagickFalse)
3456         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3457       break;
3458     }
3459     case PaletteType:
3460     {
3461       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3462         status=TransformImageColorspace(image,RGBColorspace,exception);
3463       if ((image->storage_class == DirectClass) || (image->colors > 256))
3464         {
3465           quantize_info=AcquireQuantizeInfo(image_info);
3466           quantize_info->number_colors=256;
3467           status=QuantizeImage(quantize_info,image,exception);
3468           quantize_info=DestroyQuantizeInfo(quantize_info);
3469         }
3470       image->matte=MagickFalse;
3471       break;
3472     }
3473     case PaletteBilevelMatteType:
3474     {
3475       ChannelType
3476         channel_mask;
3477
3478       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3479         status=TransformImageColorspace(image,RGBColorspace,exception);
3480       if (image->matte == MagickFalse)
3481         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3482       channel_mask=SetPixelChannelMask(image,AlphaChannel);
3483       (void) BilevelImage(image,(double) QuantumRange/2.0,exception);
3484       (void) SetPixelChannelMask(image,channel_mask);
3485       quantize_info=AcquireQuantizeInfo(image_info);
3486       status=QuantizeImage(quantize_info,image,exception);
3487       quantize_info=DestroyQuantizeInfo(quantize_info);
3488       break;
3489     }
3490     case PaletteMatteType:
3491     {
3492       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3493         status=TransformImageColorspace(image,RGBColorspace,exception);
3494       if (image->matte == MagickFalse)
3495         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3496       quantize_info=AcquireQuantizeInfo(image_info);
3497       quantize_info->colorspace=TransparentColorspace;
3498       status=QuantizeImage(quantize_info,image,exception);
3499       quantize_info=DestroyQuantizeInfo(quantize_info);
3500       break;
3501     }
3502     case TrueColorType:
3503     {
3504       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3505         status=TransformImageColorspace(image,RGBColorspace,exception);
3506       if (image->storage_class != DirectClass)
3507         status=SetImageStorageClass(image,DirectClass,exception);
3508       image->matte=MagickFalse;
3509       break;
3510     }
3511     case TrueColorMatteType:
3512     {
3513       if (IsRGBColorspace(image->colorspace) == MagickFalse)
3514         status=TransformImageColorspace(image,RGBColorspace,exception);
3515       if (image->storage_class != DirectClass)
3516         status=SetImageStorageClass(image,DirectClass,exception);
3517       if (image->matte == MagickFalse)
3518         (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3519       break;
3520     }
3521     case ColorSeparationType:
3522     {
3523       if (image->colorspace != CMYKColorspace)
3524         {
3525           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3526             status=TransformImageColorspace(image,RGBColorspace,exception);
3527           status=TransformImageColorspace(image,CMYKColorspace,exception);
3528         }
3529       if (image->storage_class != DirectClass)
3530         status=SetImageStorageClass(image,DirectClass,exception);
3531       image->matte=MagickFalse;
3532       break;
3533     }
3534     case ColorSeparationMatteType:
3535     {
3536       if (image->colorspace != CMYKColorspace)
3537         {
3538           if (IsRGBColorspace(image->colorspace) == MagickFalse)
3539             status=TransformImageColorspace(image,RGBColorspace,exception);
3540           status=TransformImageColorspace(image,CMYKColorspace,exception);
3541         }
3542       if (image->storage_class != DirectClass)
3543         status=SetImageStorageClass(image,DirectClass,exception);
3544       if (image->matte == MagickFalse)
3545         status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
3546       break;
3547     }
3548     case OptimizeType:
3549     case UndefinedType:
3550       break;
3551   }
3552   image->type=type;
3553   image_info=DestroyImageInfo(image_info);
3554   return(status);
3555 }
3556 \f
3557 /*
3558 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3559 %                                                                             %
3560 %                                                                             %
3561 %                                                                             %
3562 %   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                       %
3563 %                                                                             %
3564 %                                                                             %
3565 %                                                                             %
3566 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3567 %
3568 %  SetImageVirtualPixelMethod() sets the "virtual pixels" method for the
3569 %  image and returns the previous setting.  A virtual pixel is any pixel access
3570 %  that is outside the boundaries of the image cache.
3571 %
3572 %  The format of the SetImageVirtualPixelMethod() method is:
3573 %
3574 %      VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3575 %        const VirtualPixelMethod virtual_pixel_method)
3576 %
3577 %  A description of each parameter follows:
3578 %
3579 %    o image: the image.
3580 %
3581 %    o virtual_pixel_method: choose the type of virtual pixel.
3582 %
3583 */
3584 MagickExport VirtualPixelMethod SetImageVirtualPixelMethod(const Image *image,
3585   const VirtualPixelMethod virtual_pixel_method)
3586 {
3587   assert(image != (const Image *) NULL);
3588   assert(image->signature == MagickSignature);
3589   if (image->debug != MagickFalse)
3590     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3591   return(SetPixelCacheVirtualMethod(image,virtual_pixel_method));
3592 }
3593 \f
3594 /*
3595 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3596 %                                                                             %
3597 %                                                                             %
3598 %                                                                             %
3599 %     S m u s h I m a g e s                                                   %
3600 %                                                                             %
3601 %                                                                             %
3602 %                                                                             %
3603 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3604 %
3605 %  SmushImages() takes all images from the current image pointer to the end
3606 %  of the image list and smushes them to each other top-to-bottom if the
3607 %  stack parameter is true, otherwise left-to-right.
3608 %
3609 %  The current gravity setting now effects how the image is justified in the
3610 %  final image.
3611 %
3612 %  The format of the SmushImages method is:
3613 %
3614 %      Image *SmushImages(const Image *images,const MagickBooleanType stack,
3615 %        ExceptionInfo *exception)
3616 %
3617 %  A description of each parameter follows:
3618 %
3619 %    o images: the image sequence.
3620 %
3621 %    o stack: A value other than 0 stacks the images top-to-bottom.
3622 %
3623 %    o offset: minimum distance in pixels between images.
3624 %
3625 %    o exception: return any errors or warnings in this structure.
3626 %
3627 */
3628
3629 static ssize_t SmushXGap(const Image *smush_image,const Image *images,
3630   const ssize_t offset,ExceptionInfo *exception)
3631 {
3632   CacheView
3633     *left_view,
3634     *right_view;
3635
3636   const Image
3637     *left_image,
3638     *right_image;
3639
3640   RectangleInfo
3641     left_geometry,
3642     right_geometry;
3643
3644   register const Quantum
3645     *p;
3646
3647   register ssize_t
3648     i,
3649     y;
3650
3651   size_t
3652     gap;
3653
3654   ssize_t
3655     x;
3656
3657   if (images->previous == (Image *) NULL)
3658     return(0);
3659   right_image=images;
3660   SetGeometry(smush_image,&right_geometry);
3661   GravityAdjustGeometry(right_image->columns,right_image->rows,
3662     right_image->gravity,&right_geometry);
3663   left_image=images->previous;
3664   SetGeometry(smush_image,&left_geometry);
3665   GravityAdjustGeometry(left_image->columns,left_image->rows,
3666     left_image->gravity,&left_geometry);
3667   gap=right_image->columns;
3668   left_view=AcquireCacheView(left_image);
3669   right_view=AcquireCacheView(right_image);
3670   for (y=0; y < (ssize_t) smush_image->rows; y++)
3671   {
3672     for (x=(ssize_t) left_image->columns-1; x > 0; x--)
3673     {
3674       p=GetCacheViewVirtualPixels(left_view,x,left_geometry.y+y,1,1,exception);
3675       if ((p == (const Quantum *) NULL) ||
3676           (GetPixelAlpha(left_image,p) != TransparentAlpha) ||
3677           ((left_image->columns-x-1) >= gap))
3678         break;
3679     }
3680     i=(ssize_t) left_image->columns-x-1;
3681     for (x=0; x < (ssize_t) right_image->columns; x++)
3682     {
3683       p=GetCacheViewVirtualPixels(right_view,x,right_geometry.y+y,1,1,
3684         exception);
3685       if ((p == (const Quantum *) NULL) ||
3686           (GetPixelAlpha(right_image,p) != TransparentAlpha) ||
3687           ((x+i) >= (ssize_t) gap))
3688         break;
3689     }
3690     if ((x+i) < (ssize_t) gap)
3691       gap=(size_t) (x+i);
3692   }
3693   right_view=DestroyCacheView(right_view);
3694   left_view=DestroyCacheView(left_view);
3695   if (y < (ssize_t) smush_image->rows)
3696     return(offset);
3697   return((ssize_t) gap-offset);
3698 }
3699
3700 static ssize_t SmushYGap(const Image *smush_image,const Image *images,
3701   const ssize_t offset,ExceptionInfo *exception)
3702 {
3703   CacheView
3704     *bottom_view,
3705     *top_view;
3706
3707   const Image
3708     *bottom_image,
3709     *top_image;
3710
3711   RectangleInfo
3712     bottom_geometry,
3713     top_geometry;
3714
3715   register const Quantum
3716     *p;
3717
3718   register ssize_t
3719     i,
3720     x;
3721
3722   size_t
3723     gap;
3724
3725   ssize_t
3726     y;
3727
3728   if (images->previous == (Image *) NULL)
3729     return(0);
3730   bottom_image=images;
3731   SetGeometry(smush_image,&bottom_geometry);
3732   GravityAdjustGeometry(bottom_image->columns,bottom_image->rows,
3733     bottom_image->gravity,&bottom_geometry);
3734   top_image=images->previous;
3735   SetGeometry(smush_image,&top_geometry);
3736   GravityAdjustGeometry(top_image->columns,top_image->rows,top_image->gravity,
3737     &top_geometry);
3738   gap=bottom_image->rows;
3739   top_view=AcquireCacheView(top_image);
3740   bottom_view=AcquireCacheView(bottom_image);
3741   for (x=0; x < (ssize_t) smush_image->columns; x++)
3742   {
3743     for (y=(ssize_t) top_image->rows-1; y > 0; y--)
3744     {
3745       p=GetCacheViewVirtualPixels(top_view,top_geometry.x+x,y,1,1,exception);
3746       if ((p == (const Quantum *) NULL) ||
3747           (GetPixelAlpha(top_image,p) != TransparentAlpha) ||
3748           ((top_image->rows-y-1) >= gap))
3749         break;
3750     }
3751     i=(ssize_t) top_image->rows-y-1;
3752     for (y=0; y < (ssize_t) bottom_image->rows; y++)
3753     {
3754       p=GetCacheViewVirtualPixels(bottom_view,bottom_geometry.x+x,y,1,1,
3755         exception);
3756       if ((p == (const Quantum *) NULL) ||
3757           (GetPixelAlpha(bottom_image,p) != TransparentAlpha) ||
3758           ((y+i) >= (ssize_t) gap))
3759         break;
3760     }
3761     if ((y+i) < (ssize_t) gap)
3762       gap=(size_t) (y+i);
3763   }
3764   bottom_view=DestroyCacheView(bottom_view);
3765   top_view=DestroyCacheView(top_view);
3766   if (x < (ssize_t) smush_image->columns)
3767     return(offset);
3768   return((ssize_t) gap-offset);
3769 }
3770
3771 MagickExport Image *SmushImages(const Image *images,
3772   const MagickBooleanType stack,const ssize_t offset,ExceptionInfo *exception)
3773 {
3774 #define SmushImageTag  "Smush/Image"
3775
3776   CacheView
3777     *smush_view;
3778
3779   const Image
3780     *image;
3781
3782   Image
3783     *smush_image;
3784
3785   MagickBooleanType
3786     matte,
3787     proceed,
3788     status;
3789
3790   MagickOffsetType
3791     n;
3792
3793   RectangleInfo
3794     geometry;
3795
3796   register const Image
3797     *next;
3798
3799   size_t
3800     height,
3801     number_images,
3802     width;
3803
3804   ssize_t
3805     x_offset,
3806     y_offset;
3807
3808   /*
3809     Compute maximum area of smushed area.
3810   */
3811   assert(images != (Image *) NULL);
3812   assert(images->signature == MagickSignature);
3813   if (images->debug != MagickFalse)
3814     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
3815   assert(exception != (ExceptionInfo *) NULL);
3816   assert(exception->signature == MagickSignature);
3817   image=images;
3818   matte=image->matte;
3819   number_images=1;
3820   width=image->columns;
3821   height=image->rows;
3822   next=GetNextImageInList(image);
3823   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
3824   {
3825     if (next->matte != MagickFalse)
3826       matte=MagickTrue;
3827     number_images++;
3828     if (stack != MagickFalse)
3829       {
3830         if (next->columns > width)
3831           width=next->columns;
3832         height+=next->rows;
3833         if (next->previous != (Image *) NULL)
3834           height+=offset;
3835         continue;
3836       }
3837     width+=next->columns;
3838     if (next->previous != (Image *) NULL)
3839       width+=offset;
3840     if (next->rows > height)
3841       height=next->rows;
3842   }
3843   /*
3844     Smush images.
3845   */
3846   smush_image=CloneImage(image,width,height,MagickTrue,exception);
3847   if (smush_image == (Image *) NULL)
3848     return((Image *) NULL);
3849   if (SetImageStorageClass(smush_image,DirectClass,exception) == MagickFalse)
3850     {
3851       smush_image=DestroyImage(smush_image);
3852       return((Image *) NULL);
3853     }
3854   smush_image->matte=matte;
3855   (void) SetImageBackgroundColor(smush_image,exception);
3856   status=MagickTrue;
3857   x_offset=0;
3858   y_offset=0;
3859   smush_view=AcquireCacheView(smush_image);
3860   for (n=0; n < (MagickOffsetType) number_images; n++)
3861   {
3862     SetGeometry(smush_image,&geometry);
3863     GravityAdjustGeometry(image->columns,image->rows,image->gravity,&geometry);
3864     if (stack != MagickFalse)
3865       {
3866         x_offset-=geometry.x;
3867         y_offset-=SmushYGap(smush_image,image,offset,exception);
3868       }
3869     else
3870       {
3871         x_offset-=SmushXGap(smush_image,image,offset,exception);
3872         y_offset-=geometry.y;
3873       }
3874     status=CompositeImage(smush_image,OverCompositeOp,image,x_offset,y_offset,
3875       exception);
3876     proceed=SetImageProgress(image,SmushImageTag,n,number_images);
3877     if (proceed == MagickFalse)
3878       break;
3879     if (stack == MagickFalse)
3880       {
3881         x_offset+=(ssize_t) image->columns;
3882         y_offset=0;
3883       }
3884     else
3885       {
3886         x_offset=0;
3887         y_offset+=(ssize_t) image->rows;
3888       }
3889     image=GetNextImageInList(image);
3890   }
3891   if (stack == MagickFalse)
3892     smush_image->columns=(size_t) x_offset;
3893   else
3894     smush_image->rows=(size_t) y_offset;
3895   smush_view=DestroyCacheView(smush_view);
3896   if (status == MagickFalse)
3897     smush_image=DestroyImage(smush_image);
3898   return(smush_image);
3899 }
3900 \f
3901 /*
3902 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3903 %                                                                             %
3904 %                                                                             %
3905 %                                                                             %
3906 %   S t r i p I m a g e                                                       %
3907 %                                                                             %
3908 %                                                                             %
3909 %                                                                             %
3910 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3911 %
3912 %  StripImage() strips an image of all profiles and comments.
3913 %
3914 %  The format of the StripImage method is:
3915 %
3916 %      MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3917 %
3918 %  A description of each parameter follows:
3919 %
3920 %    o image: the image.
3921 %
3922 %    o exception: return any errors or warnings in this structure.
3923 %
3924 */
3925 MagickExport MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3926 {
3927   MagickBooleanType
3928     status;
3929
3930   assert(image != (Image *) NULL);
3931   if (image->debug != MagickFalse)
3932     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3933   (void) exception;
3934   DestroyImageProfiles(image);
3935   (void) DeleteImageProperty(image,"comment");
3936   (void) DeleteImageProperty(image,"date:create");
3937   (void) DeleteImageProperty(image,"date:modify");
3938   status=SetImageArtifact(image,"png:include-chunk","none,trns,gama");
3939   return(status);
3940 }
3941 \f
3942 /*
3943 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3944 %                                                                             %
3945 %                                                                             %
3946 %                                                                             %
3947 +   S y n c I m a g e                                                         %
3948 %                                                                             %
3949 %                                                                             %
3950 %                                                                             %
3951 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3952 %
3953 %  SyncImage() initializes the red, green, and blue intensities of each pixel
3954 %  as defined by the colormap index.
3955 %
3956 %  The format of the SyncImage method is:
3957 %
3958 %      MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3959 %
3960 %  A description of each parameter follows:
3961 %
3962 %    o image: the image.
3963 %
3964 %    o exception: return any errors or warnings in this structure.
3965 %
3966 */
3967
3968 static inline Quantum PushColormapIndex(Image *image,
3969   const size_t index,MagickBooleanType *range_exception)
3970 {
3971   if (index < image->colors)
3972     return((Quantum) index);
3973   *range_exception=MagickTrue;
3974   return((Quantum) 0);
3975 }
3976
3977 MagickExport MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3978 {
3979   CacheView
3980     *image_view;
3981
3982   MagickBooleanType
3983     range_exception,
3984     status;
3985
3986   ssize_t
3987     y;
3988
3989   assert(image != (Image *) NULL);
3990   if (image->debug != MagickFalse)
3991     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3992   assert(image->signature == MagickSignature);
3993   if (image->storage_class == DirectClass)
3994     return(MagickFalse);
3995   range_exception=MagickFalse;
3996   status=MagickTrue;
3997   image_view=AcquireCacheView(image);
3998 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3999   #pragma omp parallel for schedule(static,4) shared(status)
4000 #endif
4001   for (y=0; y < (ssize_t) image->rows; y++)
4002   {
4003     Quantum
4004       index;
4005
4006     register Quantum
4007       *restrict q;
4008
4009     register ssize_t
4010       x;
4011
4012     if (status == MagickFalse)
4013       continue;
4014     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
4015     if (q == (Quantum *) NULL)
4016       {
4017         status=MagickFalse;
4018         continue;
4019       }
4020     for (x=0; x < (ssize_t) image->columns; x++)
4021     {
4022       index=PushColormapIndex(image,(size_t) GetPixelIndex(image,q),
4023         &range_exception);
4024       SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
4025       q+=GetPixelChannels(image);
4026     }
4027     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4028       status=MagickFalse;
4029   }
4030   image_view=DestroyCacheView(image_view);
4031   if (range_exception != MagickFalse)
4032     (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
4033       "InvalidColormapIndex","`%s'",image->filename);
4034   return(status);
4035 }
4036 \f
4037 /*
4038 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4039 %                                                                             %
4040 %                                                                             %
4041 %                                                                             %
4042 %   S y n c I m a g e S e t t i n g s                                         %
4043 %                                                                             %
4044 %                                                                             %
4045 %                                                                             %
4046 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4047 %
4048 %  SyncImageSettings() sync the image info options to the image.
4049 %
4050 %  The format of the SyncImageSettings method is:
4051 %
4052 %      MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4053 %        Image *image,ExceptionInfo *exception)
4054 %      MagickBooleanType SyncImagesSettings(const ImageInfo *image_info,
4055 %        Image *image,ExceptionInfo *exception)
4056 %
4057 %  A description of each parameter follows:
4058 %
4059 %    o image_info: the image info.
4060 %
4061 %    o image: the image.
4062 %
4063 %    o exception: return any errors or warnings in this structure.
4064 %
4065 */
4066
4067 MagickExport MagickBooleanType SyncImagesSettings(ImageInfo *image_info,
4068   Image *images,ExceptionInfo *exception)
4069 {
4070   Image
4071     *image;
4072
4073   assert(image_info != (const ImageInfo *) NULL);
4074   assert(image_info->signature == MagickSignature);
4075   assert(images != (Image *) NULL);
4076   assert(images->signature == MagickSignature);
4077   if (images->debug != MagickFalse)
4078     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
4079   image=images;
4080   for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
4081     (void) SyncImageSettings(image_info,image,exception);
4082   (void) DeleteImageOption(image_info,"page");
4083   return(MagickTrue);
4084 }
4085
4086 MagickExport MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
4087   Image *image,ExceptionInfo *exception)
4088 {
4089   char
4090     property[MaxTextExtent];
4091
4092   const char
4093     *option,
4094     *value;
4095
4096   GeometryInfo
4097     geometry_info;
4098
4099   MagickStatusType
4100     flags;
4101
4102   ResolutionType
4103     units;
4104
4105   /*
4106     Sync image options.
4107   */
4108   assert(image_info != (const ImageInfo *) NULL);
4109   assert(image_info->signature == MagickSignature);
4110   assert(image != (Image *) NULL);
4111   assert(image->signature == MagickSignature);
4112   if (image->debug != MagickFalse)
4113     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4114   option=GetImageOption(image_info,"background");
4115   if (option != (const char *) NULL)
4116     (void) QueryColorCompliance(option,AllCompliance,&image->background_color,
4117       exception);
4118   option=GetImageOption(image_info,"bias");
4119   if (option != (const char *) NULL)
4120     image->bias=StringToDoubleInterval(option,(double) QuantumRange+1.0);
4121   option=GetImageOption(image_info,"black-point-compensation");
4122   if (option != (const char *) NULL)
4123     image->black_point_compensation=(MagickBooleanType) ParseCommandOption(
4124       MagickBooleanOptions,MagickFalse,option);
4125   option=GetImageOption(image_info,"blue-primary");
4126   if (option != (const char *) NULL)
4127     {
4128       flags=ParseGeometry(option,&geometry_info);
4129       image->chromaticity.blue_primary.x=geometry_info.rho;
4130       image->chromaticity.blue_primary.y=geometry_info.sigma;
4131       if ((flags & SigmaValue) == 0)
4132         image->chromaticity.blue_primary.y=image->chromaticity.blue_primary.x;
4133     }
4134   option=GetImageOption(image_info,"bordercolor");
4135   if (option != (const char *) NULL)
4136     (void) QueryColorCompliance(option,AllCompliance,&image->border_color,
4137       exception);
4138   option=GetImageOption(image_info,"compose");
4139   if (option != (const char *) NULL)
4140     image->compose=(CompositeOperator) ParseCommandOption(MagickComposeOptions,
4141       MagickFalse,option);
4142   option=GetImageOption(image_info,"compress");
4143   if (option != (const char *) NULL)
4144     image->compression=(CompressionType) ParseCommandOption(
4145       MagickCompressOptions,MagickFalse,option);
4146   option=GetImageOption(image_info,"debug");
4147   if (option != (const char *) NULL)
4148     image->debug=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4149       MagickFalse,option);
4150   option=GetImageOption(image_info,"density");
4151   if (option != (const char *) NULL)
4152     {
4153       GeometryInfo
4154         geometry_info;
4155
4156       flags=ParseGeometry(option,&geometry_info);
4157       image->resolution.x=geometry_info.rho;
4158       image->resolution.y=geometry_info.sigma;
4159       if ((flags & SigmaValue) == 0)
4160         image->resolution.y=image->resolution.x;
4161     }
4162   option=GetImageOption(image_info,"depth");
4163   if (option != (const char *) NULL)
4164     image->depth=StringToUnsignedLong(option);
4165   option=GetImageOption(image_info,"endian");
4166   if (option != (const char *) NULL)
4167     image->endian=(EndianType) ParseCommandOption(MagickEndianOptions,
4168       MagickFalse,option);
4169   option=GetImageOption(image_info,"filter");
4170   if (option != (const char *) NULL)
4171     image->filter=(FilterTypes) ParseCommandOption(MagickFilterOptions,
4172       MagickFalse,option);
4173   option=GetImageOption(image_info,"fuzz");
4174   if (option != (const char *) NULL)
4175     image->fuzz=StringToDoubleInterval(option,(double) QuantumRange+1.0);
4176   option=GetImageOption(image_info,"gravity");
4177   if (option != (const char *) NULL)
4178     image->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
4179       MagickFalse,option);
4180   option=GetImageOption(image_info,"green-primary");
4181   if (option != (const char *) NULL)
4182     {
4183       flags=ParseGeometry(option,&geometry_info);
4184       image->chromaticity.green_primary.x=geometry_info.rho;
4185       image->chromaticity.green_primary.y=geometry_info.sigma;
4186       if ((flags & SigmaValue) == 0)
4187         image->chromaticity.green_primary.y=image->chromaticity.green_primary.x;
4188     }
4189   option=GetImageOption(image_info,"intent");
4190   if (option != (const char *) NULL)
4191     image->rendering_intent=(RenderingIntent) ParseCommandOption(
4192       MagickIntentOptions,MagickFalse,option);
4193   option=GetImageOption(image_info,"interlace");
4194   if (option != (const char *) NULL)
4195     image->interlace=(InterlaceType) ParseCommandOption(MagickInterlaceOptions,
4196       MagickFalse,option);
4197   option=GetImageOption(image_info,"interpolate");
4198   if (option != (const char *) NULL)
4199     image->interpolate=(PixelInterpolateMethod) ParseCommandOption(
4200       MagickInterpolateOptions,MagickFalse,option);
4201   option=GetImageOption(image_info,"loop");
4202   if (option != (const char *) NULL)
4203     image->iterations=StringToUnsignedLong(option);
4204   option=GetImageOption(image_info,"mattecolor");
4205   if (option != (const char *) NULL)
4206     (void) QueryColorCompliance(option,AllCompliance,&image->matte_color,
4207       exception);
4208   option=GetImageOption(image_info,"orient");
4209   if (option != (const char *) NULL)
4210     image->orientation=(OrientationType) ParseCommandOption(
4211       MagickOrientationOptions,MagickFalse,option);
4212   option=GetImageOption(image_info,"page");
4213   if (option != (const char *) NULL)
4214     {
4215       char
4216         *geometry;
4217
4218       geometry=GetPageGeometry(option);
4219       flags=ParseAbsoluteGeometry(geometry,&image->page);
4220       geometry=DestroyString(geometry);
4221     }
4222   option=GetImageOption(image_info,"quality");
4223   if (option != (const char *) NULL)
4224     image->quality=StringToUnsignedLong(option);
4225   option=GetImageOption(image_info,"red-primary");
4226   if (option != (const char *) NULL)
4227     {
4228       flags=ParseGeometry(option,&geometry_info);
4229       image->chromaticity.red_primary.x=geometry_info.rho;
4230       image->chromaticity.red_primary.y=geometry_info.sigma;
4231       if ((flags & SigmaValue) == 0)
4232         image->chromaticity.red_primary.y=image->chromaticity.red_primary.x;
4233     }
4234   if (image_info->quality != UndefinedCompressionQuality)
4235     image->quality=image_info->quality;
4236   option=GetImageOption(image_info,"scene");
4237   if (option != (const char *) NULL)
4238     image->scene=StringToUnsignedLong(option);
4239   option=GetImageOption(image_info,"taint");
4240   if (option != (const char *) NULL)
4241     image->taint=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
4242       MagickFalse,option);
4243   option=GetImageOption(image_info,"tile-offset");
4244   if (option != (const char *) NULL)
4245     {
4246       char
4247         *geometry;
4248
4249       geometry=GetPageGeometry(option);
4250       flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
4251       geometry=DestroyString(geometry);
4252     }
4253   option=GetImageOption(image_info,"transparent-color");
4254   if (option != (const char *) NULL)
4255     (void) QueryColorCompliance(option,AllCompliance,&image->transparent_color,
4256       exception);
4257   option=GetImageOption(image_info,"type");
4258   if (option != (const char *) NULL)
4259     image->type=(ImageType) ParseCommandOption(MagickTypeOptions,MagickFalse,
4260       option);
4261   option=GetImageOption(image_info,"units");
4262   if (option != (const char *) NULL)
4263     units=(ResolutionType) ParseCommandOption(MagickResolutionOptions,
4264       MagickFalse,option);
4265   else
4266     units = image_info->units;
4267   if (units != UndefinedResolution)
4268     {
4269       if (image->units != units)
4270         switch (image->units)
4271         {
4272           case PixelsPerInchResolution:
4273           {
4274             if (units == PixelsPerCentimeterResolution)
4275               {
4276                 image->resolution.x/=2.54;
4277                 image->resolution.y/=2.54;
4278               }
4279             break;
4280           }
4281           case PixelsPerCentimeterResolution:
4282           {
4283             if (units == PixelsPerInchResolution)
4284               {
4285                 image->resolution.x=(double) ((size_t) (100.0*2.54*
4286                   image->resolution.x+0.5))/100.0;
4287                 image->resolution.y=(double) ((size_t) (100.0*2.54*
4288                   image->resolution.y+0.5))/100.0;
4289               }
4290             break;
4291           }
4292           default:
4293             break;
4294         }
4295       image->units=units;
4296     }
4297   option=GetImageOption(image_info,"white-point");
4298   if (option != (const char *) NULL)
4299     {
4300       flags=ParseGeometry(option,&geometry_info);
4301       image->chromaticity.white_point.x=geometry_info.rho;
4302       image->chromaticity.white_point.y=geometry_info.sigma;
4303       if ((flags & SigmaValue) == 0)
4304         image->chromaticity.white_point.y=image->chromaticity.white_point.x;
4305     }
4306   ResetImageOptionIterator(image_info);
4307   for (option=GetNextImageOption(image_info); option != (const char *) NULL; )
4308   {
4309     value=GetImageOption(image_info,option);
4310     if (value != (const char *) NULL)
4311       {
4312         (void) FormatLocaleString(property,MaxTextExtent,"%s",option);
4313         (void) SetImageArtifact(image,property,value);
4314       }
4315     option=GetNextImageOption(image_info);
4316   }
4317   return(MagickTrue);
4318 }