granicus.if.org Git - imagemagick/blob - magick/constitute.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %     CCCC   OOO   N   N  SSSSS  TTTTT  IIIII  TTTTT  U   U  TTTTT  EEEEE     %
   7 %    C      O   O  NN  N  SS       T      I      T    U   U    T    E         %
   8 %    C      O   O  N N N  ESSS     T      I      T    U   U    T    EEE       %
   9 %    C      O   O  N  NN     SS    T      I      T    U   U    T    E         %
  10 %     CCCC   OOO   N   N  SSSSS    T    IIIII    T     UUU     T    EEEEE     %
  11 %                                                                             %
  12 %                                                                             %
  13 %                  MagickCore Methods to Consitute an Image                   %
  14 %                                                                             %
  15 %                             Software Design                                 %
  16 %                               John Cristy                                   %
  17 %                               October 1998                                  %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2010 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 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "magick/studio.h"
  43 #include "magick/blob.h"
  44 #include "magick/blob-private.h"
  45 #include "magick/exception.h"
  46 #include "magick/exception-private.h"
  47 #include "magick/cache.h"
  48 #include "magick/client.h"
  49 #include "magick/constitute.h"
  50 #include "magick/delegate.h"
  51 #include "magick/geometry.h"
  52 #include "magick/identify.h"
  53 #include "magick/image-private.h"
  54 #include "magick/list.h"
  55 #include "magick/magick.h"
  56 #include "magick/memory_.h"
  57 #include "magick/monitor.h"
  58 #include "magick/monitor-private.h"
  59 #include "magick/option.h"
  60 #include "magick/pixel.h"
  61 #include "magick/policy.h"
  62 #include "magick/profile.h"
  63 #include "magick/property.h"
  64 #include "magick/quantum.h"
  65 #include "magick/resize.h"
  66 #include "magick/resource_.h"
  67 #include "magick/semaphore.h"
  68 #include "magick/statistic.h"
  69 #include "magick/stream.h"
  70 #include "magick/string_.h"
  71 #include "magick/string-private.h"
  72 #include "magick/timer.h"
  73 #include "magick/transform.h"
  74 #include "magick/utility.h"
  75 \f
  76 static SemaphoreInfo
  77   *constitute_semaphore = (SemaphoreInfo *) NULL;
  78 \f
  79 /*
  80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  81 %                                                                             %
  82 %                                                                             %
  83 %                                                                             %
  84 +   C o n s t i t u t e C o m p o n e n t G e n e s i s                       %
  85 %                                                                             %
  86 %                                                                             %
  87 %                                                                             %
  88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  89 %
  90 %  ConstituteComponentGenesis() instantiates the constitute component.
  91 %
  92 %  The format of the ConstituteComponentGenesis method is:
  93 %
  94 %      MagickBooleanType ConstituteComponentGenesis(void)
  95 %
  96 */
  97 MagickExport MagickBooleanType ConstituteComponentGenesis(void)
  98 {
  99   AcquireSemaphoreInfo(&constitute_semaphore);
 100   return(MagickTrue);
 101 }
 102 \f
 103 /*
 104 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 105 %                                                                             %
 106 %                                                                             %
 107 %                                                                             %
 108 +   C o n s t i t u t e C o m p o n e n t T e r m i n u s                     %
 109 %                                                                             %
 110 %                                                                             %
 111 %                                                                             %
 112 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 113 %
 114 %  ConstituteComponentTerminus() destroys the constitute component.
 115 %
 116 %  The format of the ConstituteComponentTerminus method is:
 117 %
 118 %      ConstituteComponentTerminus(void)
 119 %
 120 */
 121 MagickExport void ConstituteComponentTerminus(void)
 122 {
 123   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 124     AcquireSemaphoreInfo(&constitute_semaphore);
 125   DestroySemaphoreInfo(&constitute_semaphore);
 126 }
 127 \f
 128 /*
 129 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 130 %                                                                             %
 131 %                                                                             %
 132 %                                                                             %
 133 %   C o n s t i t u t e I m a g e                                             %
 134 %                                                                             %
 135 %                                                                             %
 136 %                                                                             %
 137 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 138 %
 139 %  ConstituteImage() returns an image from the pixel data you supply.
 140 %  The pixel data must be in scanline order top-to-bottom.  The data can be
 141 %  char, short int, int, float, or double.  Float and double require the
 142 %  pixels to be normalized [0..1], otherwise [0..QuantumRange].  For example, to
 143 %  create a 640x480 image from unsigned red-green-blue character data, use:
 144 %
 145 %      image = ConstituteImage(640,480,"RGB",CharPixel,pixels,&exception);
 146 %
 147 %  The format of the ConstituteImage method is:
 148 %
 149 %      Image *ConstituteImage(const unsigned long columns,
 150 %        const unsigned long rows,const char *map,const StorageType storage,
 151 %        const void *pixels,ExceptionInfo *exception)
 152 %
 153 %  A description of each parameter follows:
 154 %
 155 %    o columns: width in pixels of the image.
 156 %
 157 %    o rows: height in pixels of the image.
 158 %
 159 %    o map:  This string reflects the expected ordering of the pixel array.
 160 %      It can be any combination or order of R = red, G = green, B = blue,
 161 %      A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan,
 162 %      Y = yellow, M = magenta, K = black, I = intensity (for grayscale),
 163 %      P = pad.
 164 %
 165 %    o storage: Define the data type of the pixels.  Float and double types are
 166 %      expected to be normalized [0..1] otherwise [0..QuantumRange].  Choose
 167 %      from these types: CharPixel, DoublePixel, FloatPixel, IntegerPixel,
 168 %      LongPixel, QuantumPixel, or ShortPixel.
 169 %
 170 %    o pixels: This array of values contain the pixel components as defined by
 171 %      map and type.  You must preallocate this array where the expected
 172 %      length varies depending on the values of width, height, map, and type.
 173 %
 174 %    o exception: return any errors or warnings in this structure.
 175 %
 176 */
 177 MagickExport Image *ConstituteImage(const unsigned long columns,
 178   const unsigned long rows,const char *map,const StorageType storage,
 179   const void *pixels,ExceptionInfo *exception)
 180 {
 181   Image
 182     *image;
 183
 184   MagickBooleanType
 185     status;
 186
 187   /*
 188     Allocate image structure.
 189   */
 190   assert(map != (const char *) NULL);
 191   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",map);
 192   assert(pixels != (void *) NULL);
 193   assert(exception != (ExceptionInfo *) NULL);
 194   assert(exception->signature == MagickSignature);
 195   image=AcquireImage((ImageInfo *) NULL);
 196   if (image == (Image *) NULL)
 197     return((Image *) NULL);
 198   if ((columns == 0) || (rows == 0))
 199     ThrowImageException(OptionError,"NonZeroWidthAndHeightRequired");
 200   image->columns=columns;
 201   image->rows=rows;
 202   (void) SetImageBackgroundColor(image);
 203   status=ImportImagePixels(image,0,0,columns,rows,map,storage,pixels);
 204   if (status == MagickFalse)
 205     {
 206       InheritException(exception,&image->exception);
 207       image=DestroyImage(image);
 208     }
 209   return(image);
 210 }
 211 \f
 212 /*
 213 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 214 %                                                                             %
 215 %                                                                             %
 216 %                                                                             %
 217 %   P i n g I m a g e                                                         %
 218 %                                                                             %
 219 %                                                                             %
 220 %                                                                             %
 221 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 222 %
 223 %  PingImage() returns all the properties of an image or image sequence
 224 %  except for the pixels.  It is much faster and consumes far less memory
 225 %  than ReadImage().  On failure, a NULL image is returned and exception
 226 %  describes the reason for the failure.
 227 %
 228 %  The format of the PingImage method is:
 229 %
 230 %      Image *PingImage(const ImageInfo *image_info,ExceptionInfo *exception)
 231 %
 232 %  A description of each parameter follows:
 233 %
 234 %    o image_info: Ping the image defined by the file or filename members of
 235 %      this structure.
 236 %
 237 %    o exception: return any errors or warnings in this structure.
 238 %
 239 */
 240
 241 #if defined(__cplusplus) || defined(c_plusplus)
 242 extern "C" {
 243 #endif
 244
 245 static size_t PingStream(const Image *magick_unused(image),
 246   const void *magick_unused(pixels),const size_t columns)
 247 {
 248   return(columns);
 249 }
 250
 251 #if defined(__cplusplus) || defined(c_plusplus)
 252 }
 253 #endif
 254
 255 MagickExport Image *PingImage(const ImageInfo *image_info,
 256   ExceptionInfo *exception)
 257 {
 258   Image
 259     *image;
 260
 261   ImageInfo
 262     *ping_info;
 263
 264   assert(image_info != (ImageInfo *) NULL);
 265   assert(image_info->signature == MagickSignature);
 266   if (image_info->debug != MagickFalse)
 267     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 268       image_info->filename);
 269   assert(exception != (ExceptionInfo *) NULL);
 270   ping_info=CloneImageInfo(image_info);
 271   ping_info->ping=MagickTrue;
 272   image=ReadStream(ping_info,&PingStream,exception);
 273   if (image != (Image *) NULL)
 274     {
 275       ResetTimer(&image->timer);
 276       if (ping_info->verbose != MagickFalse)
 277         (void) IdentifyImage(image,stdout,MagickFalse);
 278     }
 279   ping_info=DestroyImageInfo(ping_info);
 280   return(image);
 281 }
 282 \f
 283 /*
 284 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 285 %                                                                             %
 286 %                                                                             %
 287 %                                                                             %
 288 %   P i n g I m a g e s                                                       %
 289 %                                                                             %
 290 %                                                                             %
 291 %                                                                             %
 292 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 293 %
 294 %  PingImages() pings one or more images and returns them as an image list.
 295 %
 296 %  The format of the PingImage method is:
 297 %
 298 %      Image *PingImages(const ImageInfo *image_info,ExceptionInfo *exception)
 299 %
 300 %  A description of each parameter follows:
 301 %
 302 %    o image_info: the image info.
 303 %
 304 %    o exception: return any errors or warnings in this structure.
 305 %
 306 */
 307 MagickExport Image *PingImages(const ImageInfo *image_info,
 308   ExceptionInfo *exception)
 309 {
 310   char
 311     filename[MaxTextExtent];
 312
 313   Image
 314     *image,
 315     *images;
 316
 317   ImageInfo
 318     *read_info;
 319
 320   /*
 321     Ping image list from a file.
 322   */
 323   assert(image_info != (ImageInfo *) NULL);
 324   assert(image_info->signature == MagickSignature);
 325   if (image_info->debug != MagickFalse)
 326     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 327       image_info->filename);
 328   assert(exception != (ExceptionInfo *) NULL);
 329   (void) InterpretImageFilename(image_info,(Image *) NULL,image_info->filename,
 330     (int) image_info->scene,filename);
 331   if (LocaleCompare(filename,image_info->filename) != 0)
 332     {
 333       ExceptionInfo
 334         *sans;
 335
 336       long
 337         extent,
 338         scene;
 339
 340       /*
 341         Images of the form image-%d.png[1-5].
 342       */
 343       read_info=CloneImageInfo(image_info);
 344       sans=AcquireExceptionInfo();
 345       (void) SetImageInfo(read_info,0,sans);
 346       sans=DestroyExceptionInfo(sans);
 347       (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
 348       images=NewImageList();
 349       extent=(long) (read_info->scene+read_info->number_scenes);
 350       for (scene=(long) read_info->scene; scene < (long) extent; scene++)
 351       {
 352         (void) InterpretImageFilename(image_info,(Image *) NULL,filename,(int)
 353           scene,read_info->filename);
 354         image=PingImage(read_info,exception);
 355         if (image == (Image *) NULL)
 356           continue;
 357         AppendImageToList(&images,image);
 358       }
 359       read_info=DestroyImageInfo(read_info);
 360       return(images);
 361     }
 362   return(PingImage(image_info,exception));
 363 }
 364 \f
 365 /*
 366 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 367 %                                                                             %
 368 %                                                                             %
 369 %                                                                             %
 370 %   R e a d I m a g e                                                         %
 371 %                                                                             %
 372 %                                                                             %
 373 %                                                                             %
 374 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 375 %
 376 %  ReadImage() reads an image or image sequence from a file or file handle.
 377 %  The method returns a NULL if there is a memory shortage or if the image
 378 %  cannot be read.  On failure, a NULL image is returned and exception
 379 %  describes the reason for the failure.
 380 %
 381 %  The format of the ReadImage method is:
 382 %
 383 %      Image *ReadImage(const ImageInfo *image_info,ExceptionInfo *exception)
 384 %
 385 %  A description of each parameter follows:
 386 %
 387 %    o image_info: Read the image defined by the file or filename members of
 388 %      this structure.
 389 %
 390 %    o exception: return any errors or warnings in this structure.
 391 %
 392 */
 393 MagickExport Image *ReadImage(const ImageInfo *image_info,
 394   ExceptionInfo *exception)
 395 {
 396   char
 397     filename[MaxTextExtent],
 398     magick[MaxTextExtent],
 399     magick_filename[MaxTextExtent];
 400
 401   const char
 402     *value;
 403
 404   const DelegateInfo
 405     *delegate_info;
 406
 407   const MagickInfo
 408     *magick_info;
 409
 410   ExceptionInfo
 411     *sans_exception;
 412
 413   GeometryInfo
 414     geometry_info;
 415
 416   Image
 417     *image,
 418     *next;
 419
 420   ImageInfo
 421     *read_info;
 422
 423   MagickStatusType
 424     flags,
 425     thread_support;
 426
 427   PolicyDomain
 428     domain;
 429
 430   PolicyRights
 431     rights;
 432
 433   /*
 434     Determine image type from filename prefix or suffix (e.g. image.jpg).
 435   */
 436   assert(image_info != (ImageInfo *) NULL);
 437   assert(image_info->signature == MagickSignature);
 438   assert(image_info->filename != (char *) NULL);
 439   if (image_info->debug != MagickFalse)
 440     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 441       image_info->filename);
 442   assert(exception != (ExceptionInfo *) NULL);
 443   read_info=CloneImageInfo(image_info);
 444   (void) CopyMagickString(magick_filename,read_info->filename,MaxTextExtent);
 445   (void) SetImageInfo(read_info,0,exception);
 446   (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
 447   (void) CopyMagickString(magick,read_info->magick,MaxTextExtent);
 448   domain=CoderPolicyDomain;
 449   rights=ReadPolicyRights;
 450   if (IsRightsAuthorized(domain,rights,read_info->magick) == MagickFalse)
 451     {
 452       errno=EPERM;
 453       (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
 454         "NotAuthorized","`%s'",read_info->filename);
 455       return((Image *) NULL);
 456     }
 457   /*
 458     Call appropriate image reader based on image type.
 459   */
 460   sans_exception=AcquireExceptionInfo();
 461   magick_info=GetMagickInfo(read_info->magick,sans_exception);
 462   sans_exception=DestroyExceptionInfo(sans_exception);
 463   if (magick_info != (const MagickInfo *) NULL)
 464     {
 465       if (GetMagickEndianSupport(magick_info) == MagickFalse)
 466         read_info->endian=UndefinedEndian;
 467       else
 468         if ((image_info->endian == UndefinedEndian) &&
 469             (GetMagickRawSupport(magick_info) != MagickFalse))
 470           {
 471             unsigned long
 472               lsb_first;
 473
 474             lsb_first=1;
 475             read_info->endian=(*(char *) &lsb_first) == 1 ? LSBEndian :
 476               MSBEndian;
 477          }
 478     }
 479   if ((magick_info != (const MagickInfo *) NULL) &&
 480       (GetMagickSeekableStream(magick_info) != MagickFalse))
 481     {
 482       MagickBooleanType
 483         status;
 484
 485       image=AcquireImage(read_info);
 486       (void) CopyMagickString(image->filename,read_info->filename,
 487         MaxTextExtent);
 488       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 489       if (status == MagickFalse)
 490         {
 491           read_info=DestroyImageInfo(read_info);
 492           image=DestroyImage(image);
 493           return((Image *) NULL);
 494         }
 495       if (IsBlobSeekable(image) == MagickFalse)
 496         {
 497           /*
 498             Coder requires a seekable stream.
 499           */
 500           *read_info->filename='\0';
 501           status=ImageToFile(image,read_info->filename,exception);
 502           if (status == MagickFalse)
 503             {
 504               (void) CloseBlob(image);
 505               read_info=DestroyImageInfo(read_info);
 506               image=DestroyImage(image);
 507               return((Image *) NULL);
 508             }
 509           read_info->temporary=MagickTrue;
 510         }
 511       (void) CloseBlob(image);
 512       image=DestroyImage(image);
 513     }
 514   image=NewImageList();
 515   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 516     AcquireSemaphoreInfo(&constitute_semaphore);
 517   if ((magick_info != (const MagickInfo *) NULL) &&
 518       (GetImageDecoder(magick_info) != (DecodeImageHandler *) NULL))
 519     {
 520       thread_support=GetMagickThreadSupport(magick_info);
 521       if ((thread_support & DecoderThreadSupport) == 0)
 522         LockSemaphoreInfo(constitute_semaphore);
 523       image=GetImageDecoder(magick_info)(read_info,exception);
 524       if ((thread_support & DecoderThreadSupport) == 0)
 525         UnlockSemaphoreInfo(constitute_semaphore);
 526     }
 527   else
 528     {
 529       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 530       if (delegate_info == (const DelegateInfo *) NULL)
 531         {
 532           (void) ThrowMagickException(exception,GetMagickModule(),
 533             MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 534             read_info->filename);
 535           if (read_info->temporary != MagickFalse)
 536             (void) RelinquishUniqueFileResource(read_info->filename);
 537           read_info=DestroyImageInfo(read_info);
 538           return((Image *) NULL);
 539         }
 540       /*
 541         Let our decoding delegate process the image.
 542       */
 543       image=AcquireImage(read_info);
 544       if (image == (Image *) NULL)
 545         {
 546           read_info=DestroyImageInfo(read_info);
 547           return((Image *) NULL);
 548         }
 549       (void) CopyMagickString(image->filename,read_info->filename,
 550         MaxTextExtent);
 551       *read_info->filename='\0';
 552       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 553         LockSemaphoreInfo(constitute_semaphore);
 554       (void) InvokeDelegate(read_info,image,read_info->magick,(char *) NULL,
 555         exception);
 556       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 557         UnlockSemaphoreInfo(constitute_semaphore);
 558       image=DestroyImageList(image);
 559       read_info->temporary=MagickTrue;
 560       (void) SetImageInfo(read_info,0,exception);
 561       magick_info=GetMagickInfo(read_info->magick,exception);
 562       if ((magick_info == (const MagickInfo *) NULL) ||
 563           (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
 564         {
 565           if (IsPathAccessible(read_info->filename) != MagickFalse)
 566             (void) ThrowMagickException(exception,GetMagickModule(),
 567               MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 568               read_info->filename);
 569           else
 570             ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 571               read_info->filename);
 572           read_info=DestroyImageInfo(read_info);
 573           return((Image *) NULL);
 574         }
 575       thread_support=GetMagickThreadSupport(magick_info);
 576       if ((thread_support & DecoderThreadSupport) == 0)
 577         LockSemaphoreInfo(constitute_semaphore);
 578       image=(Image *) (GetImageDecoder(magick_info))(read_info,exception);
 579       if ((thread_support & DecoderThreadSupport) == 0)
 580         UnlockSemaphoreInfo(constitute_semaphore);
 581     }
 582   if (read_info->temporary != MagickFalse)
 583     {
 584       (void) RelinquishUniqueFileResource(read_info->filename);
 585       read_info->temporary=MagickFalse;
 586       if (image != (Image *) NULL)
 587         (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 588     }
 589   if (image == (Image *) NULL)
 590     {
 591       read_info=DestroyImageInfo(read_info);
 592       return(image);
 593     }
 594   if (exception->severity >= ErrorException)
 595     (void) LogMagickEvent(ExceptionEvent,GetMagickModule(),
 596       "Coder (%s) generated an image despite an error (%d), "
 597       "notify the developers",image->magick,exception->severity);
 598   if (IsBlobTemporary(image) != MagickFalse)
 599     (void) RelinquishUniqueFileResource(read_info->filename);
 600   if ((GetNextImageInList(image) != (Image *) NULL) &&
 601       (IsSceneGeometry(read_info->scenes,MagickFalse) != MagickFalse))
 602     {
 603       Image
 604         *clones;
 605
 606       clones=CloneImages(image,read_info->scenes,exception);
 607       if (clones == (Image *) NULL)
 608         (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 609           "SubimageSpecificationReturnsNoImages","`%s'",read_info->filename);
 610       else
 611         {
 612           image=DestroyImageList(image);
 613           image=GetFirstImageInList(clones);
 614         }
 615     }
 616   if (GetBlobError(image) != MagickFalse)
 617     {
 618       ThrowFileException(exception,FileOpenError,
 619         "AnErrorHasOccurredReadingFromFile",read_info->filename);
 620       image=DestroyImageList(image);
 621       read_info=DestroyImageInfo(read_info);
 622       return((Image *) NULL);
 623     }
 624   for (next=image; next != (Image *) NULL; next=GetNextImageInList(next))
 625   {
 626     char
 627       timestamp[MaxTextExtent];
 628
 629     const StringInfo
 630       *profile;
 631
 632     next->taint=MagickFalse;
 633     if (next->magick_columns == 0)
 634       next->magick_columns=next->columns;
 635     if (next->magick_rows == 0)
 636       next->magick_rows=next->rows;
 637     if ((LocaleCompare(magick,"HTTP") != 0) &&
 638         (LocaleCompare(magick,"FTP") != 0))
 639       (void) CopyMagickString(next->magick,magick,MaxTextExtent);
 640     (void) CopyMagickString(next->magick_filename,magick_filename,
 641       MaxTextExtent);
 642     if (IsBlobTemporary(image) != MagickFalse)
 643       (void) CopyMagickString(next->filename,filename,MaxTextExtent);
 644     value=GetImageProperty(next,"tiff:Orientation");
 645     if (value == (char *) NULL)
 646       value=GetImageProperty(next,"exif:Orientation");
 647     if (value != (char *) NULL)
 648       {
 649         next->orientation=(OrientationType) StringToLong(value);
 650         (void) DeleteImageProperty(next,"tiff:Orientation");
 651         (void) DeleteImageProperty(next,"exif:Orientation");
 652       }
 653     value=GetImageProperty(next,"tiff:XResolution");
 654     if (value == (char *) NULL)
 655       value=GetImageProperty(next,"exif:XResolution");
 656     if (value != (char *) NULL)
 657       {
 658         geometry_info.rho=next->x_resolution;
 659         geometry_info.sigma=1.0;
 660         flags=ParseGeometry(value,&geometry_info);
 661         if (geometry_info.sigma != 0)
 662           next->x_resolution=geometry_info.rho/geometry_info.sigma;
 663         (void) DeleteImageProperty(next,"exif:XResolution");
 664         (void) DeleteImageProperty(next,"tiff:XResolution");
 665       }
 666     value=GetImageProperty(next,"tiff:YResolution");
 667     if (value == (char *) NULL)
 668       value=GetImageProperty(next,"exif:YResolution");
 669     if (value != (char *) NULL)
 670       {
 671         geometry_info.rho=next->y_resolution;
 672         geometry_info.sigma=1.0;
 673         flags=ParseGeometry(value,&geometry_info);
 674         if (geometry_info.sigma != 0)
 675           next->y_resolution=geometry_info.rho/geometry_info.sigma;
 676         (void) DeleteImageProperty(next,"exif:YResolution");
 677         (void) DeleteImageProperty(next,"tiff:YResolution");
 678       }
 679     value=GetImageProperty(next,"tiff:ResolutionUnit");
 680     if (value == (char *) NULL)
 681       value=GetImageProperty(next,"exif:ResolutionUnit");
 682     if (value != (char *) NULL)
 683       {
 684         next->units=(ResolutionType) (StringToLong(value)-1);
 685         (void) DeleteImageProperty(next,"exif:ResolutionUnit");
 686         (void) DeleteImageProperty(next,"tiff:ResolutionUnit");
 687       }
 688     if (next->page.width == 0)
 689       next->page.width=next->columns;
 690     if (next->page.height == 0)
 691       next->page.height=next->rows;
 692     if (*read_info->filename != '\0')
 693       {
 694         char
 695           *property;
 696
 697         const char
 698           *option;
 699
 700         option=GetImageOption(read_info,"caption");
 701         if (option != (const char *) NULL)
 702           {
 703             property=InterpretImageProperties(read_info,next,option);
 704             (void) SetImageProperty(next,"caption",property);
 705             property=DestroyString(property);
 706           }
 707         option=GetImageOption(read_info,"comment");
 708         if (option != (const char *) NULL)
 709           {
 710             property=InterpretImageProperties(read_info,next,option);
 711             (void) SetImageProperty(next,"comment",property);
 712             property=DestroyString(property);
 713           }
 714         option=GetImageOption(read_info,"label");
 715         if (option != (const char *) NULL)
 716           {
 717             property=InterpretImageProperties(read_info,next,option);
 718             (void) SetImageProperty(next,"label",property);
 719             property=DestroyString(property);
 720           }
 721       }
 722     if (LocaleCompare(next->magick,"TEXT") == 0)
 723       (void) ParseAbsoluteGeometry("0x0+0+0",&next->page);
 724     if ((read_info->extract != (char *) NULL) &&
 725         (read_info->stream == (StreamHandler) NULL))
 726       {
 727         RectangleInfo
 728           geometry;
 729
 730         flags=ParseAbsoluteGeometry(read_info->extract,&geometry);
 731         if ((next->columns != geometry.width) ||
 732             (next->rows != geometry.height))
 733           {
 734             if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 735               {
 736                 Image
 737                   *crop_image;
 738
 739                 crop_image=CropImage(next,&geometry,exception);
 740                 if (crop_image != (Image *) NULL)
 741                   ReplaceImageInList(&next,crop_image);
 742               }
 743             else
 744               if (((flags & WidthValue) != 0) || ((flags & HeightValue) != 0))
 745                 {
 746                   Image
 747                     *size_image;
 748
 749                   flags=ParseRegionGeometry(next,read_info->extract,&geometry,
 750                     exception);
 751                   size_image=ResizeImage(next,geometry.width,geometry.height,
 752                     next->filter,next->blur,exception);
 753                   if (size_image != (Image *) NULL)
 754                     ReplaceImageInList(&next,size_image);
 755                 }
 756           }
 757       }
 758     profile=GetImageProfile(next,"icc");
 759     if (profile == (const StringInfo *) NULL)
 760       profile=GetImageProfile(next,"icm");
 761     if (profile != (const StringInfo *) NULL)
 762       {
 763         next->color_profile.length=GetStringInfoLength(profile);
 764         next->color_profile.info=GetStringInfoDatum(profile);
 765       }
 766     profile=GetImageProfile(next,"iptc");
 767     if (profile == (const StringInfo *) NULL)
 768       profile=GetImageProfile(next,"8bim");
 769     if (profile != (const StringInfo *) NULL)
 770       {
 771         next->iptc_profile.length=GetStringInfoLength(profile);
 772         next->iptc_profile.info=GetStringInfoDatum(profile);
 773       }
 774     (void) FormatMagickTime(GetBlobProperties(next)->st_mtime,MaxTextExtent,
 775       timestamp);
 776     (void) SetImageProperty(next,"date:modify",timestamp);
 777     (void) FormatMagickTime(GetBlobProperties(next)->st_ctime,MaxTextExtent,
 778       timestamp);
 779     (void) SetImageProperty(next,"date:create",timestamp);
 780     if (read_info->verbose != MagickFalse)
 781       (void) IdentifyImage(next,stdout,MagickFalse);
 782     image=next;
 783   }
 784   read_info=DestroyImageInfo(read_info);
 785   return(GetFirstImageInList(image));
 786 }
 787 \f
 788 /*
 789 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 790 %                                                                             %
 791 %                                                                             %
 792 %                                                                             %
 793 %   R e a d I m a g e s                                                       %
 794 %                                                                             %
 795 %                                                                             %
 796 %                                                                             %
 797 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 798 %
 799 %  ReadImages() reads one or more images and returns them as an image list.
 800 %
 801 %  The format of the ReadImage method is:
 802 %
 803 %      Image *ReadImages(const ImageInfo *image_info,ExceptionInfo *exception)
 804 %
 805 %  A description of each parameter follows:
 806 %
 807 %    o image_info: the image info.
 808 %
 809 %    o exception: return any errors or warnings in this structure.
 810 %
 811 */
 812 MagickExport Image *ReadImages(const ImageInfo *image_info,
 813   ExceptionInfo *exception)
 814 {
 815   char
 816     filename[MaxTextExtent];
 817
 818   Image
 819     *image,
 820     *images;
 821
 822   ImageInfo
 823     *read_info;
 824
 825   /*
 826     Read image list from a file.
 827   */
 828   assert(image_info != (ImageInfo *) NULL);
 829   assert(image_info->signature == MagickSignature);
 830   if (image_info->debug != MagickFalse)
 831     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 832       image_info->filename);
 833   assert(exception != (ExceptionInfo *) NULL);
 834   (void) InterpretImageFilename(image_info,(Image *) NULL,image_info->filename,
 835     (int) image_info->scene,filename);
 836   if (LocaleCompare(filename,image_info->filename) != 0)
 837     {
 838       ExceptionInfo
 839         *sans;
 840
 841       long
 842         extent,
 843         scene;
 844
 845       /*
 846         Images of the form image-%d.png[1-5].
 847       */
 848       read_info=CloneImageInfo(image_info);
 849       sans=AcquireExceptionInfo();
 850       (void) SetImageInfo(read_info,0,sans);
 851       sans=DestroyExceptionInfo(sans);
 852       (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
 853       images=NewImageList();
 854       extent=(long) (read_info->scene+read_info->number_scenes);
 855       for (scene=(long) read_info->scene; scene < (long) extent; scene++)
 856       {
 857         (void) InterpretImageFilename(image_info,(Image *) NULL,filename,(int)
 858           scene,read_info->filename);
 859         image=ReadImage(read_info,exception);
 860         if (image == (Image *) NULL)
 861           continue;
 862         AppendImageToList(&images,image);
 863       }
 864       read_info=DestroyImageInfo(read_info);
 865       return(images);
 866     }
 867   return(ReadImage(image_info,exception));
 868 }
 869 \f
 870 /*
 871 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 872 %                                                                             %
 873 %                                                                             %
 874 %                                                                             %
 875 +   R e a d I n l i n e I m a g e                                             %
 876 %                                                                             %
 877 %                                                                             %
 878 %                                                                             %
 879 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 880 %
 881 %  ReadInlineImage() reads a Base64-encoded inline image or image sequence.
 882 %  The method returns a NULL if there is a memory shortage or if the image
 883 %  cannot be read.  On failure, a NULL image is returned and exception
 884 %  describes the reason for the failure.
 885 %
 886 %  The format of the ReadInlineImage method is:
 887 %
 888 %      Image *ReadInlineImage(const ImageInfo *image_info,const char *content,
 889 %        ExceptionInfo *exception)
 890 %
 891 %  A description of each parameter follows:
 892 %
 893 %    o image_info: the image info.
 894 %
 895 %    o content: the image encoded in Base64.
 896 %
 897 %    o exception: return any errors or warnings in this structure.
 898 %
 899 */
 900 MagickExport Image *ReadInlineImage(const ImageInfo *image_info,
 901   const char *content,ExceptionInfo *exception)
 902 {
 903   Image
 904     *image;
 905
 906   ImageInfo
 907     *read_info;
 908
 909   unsigned char
 910     *blob;
 911
 912   size_t
 913     length;
 914
 915   register const char
 916     *p;
 917
 918   image=NewImageList();
 919   for (p=content; (*p != ',') && (*p != '\0'); p++) ;
 920   if (*p == '\0')
 921     ThrowReaderException(CorruptImageError,"CorruptImage");
 922   p++;
 923   length=0;
 924   blob=Base64Decode(p,&length);
 925   if (length == 0)
 926     ThrowReaderException(CorruptImageError,"CorruptImage");
 927   read_info=CloneImageInfo(image_info);
 928   (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
 929     (void *) NULL);
 930   image=BlobToImage(read_info,blob,length,exception);
 931   blob=(unsigned char *) RelinquishMagickMemory(blob);
 932   read_info=DestroyImageInfo(read_info);
 933   return(image);
 934 }
 935 \f
 936 /*
 937 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 938 %                                                                             %
 939 %                                                                             %
 940 %                                                                             %
 941 %   W r i t e I m a g e                                                       %
 942 %                                                                             %
 943 %                                                                             %
 944 %                                                                             %
 945 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 946 %
 947 %  WriteImage() writes an image or an image sequence to a file or filehandle.
 948 %  If writing to a file on disk, the name is defined by the filename member of
 949 %  the image structure.  Write() returns MagickFalse is these is a memory
 950 %  shortage or if the image cannot be written.  Check the exception member of
 951 %  image to determine the cause for any failure.
 952 %
 953 %  The format of the WriteImage method is:
 954 %
 955 %      MagickBooleanType WriteImage(const ImageInfo *image_info,Image *image)
 956 %
 957 %  A description of each parameter follows:
 958 %
 959 %    o image_info: the image info.
 960 %
 961 %    o image: the image.
 962 %
 963 */
 964 MagickExport MagickBooleanType WriteImage(const ImageInfo *image_info,
 965   Image *image)
 966 {
 967   char
 968     filename[MaxTextExtent];
 969
 970   const char
 971     *option;
 972
 973   const DelegateInfo
 974     *delegate_info;
 975
 976   const MagickInfo
 977     *magick_info;
 978
 979   ExceptionInfo
 980     *sans_exception;
 981
 982   ImageInfo
 983     *write_info;
 984
 985   MagickBooleanType
 986     status,
 987     temporary;
 988
 989   MagickStatusType
 990     thread_support;
 991
 992   PolicyDomain
 993     domain;
 994
 995   PolicyRights
 996     rights;
 997
 998   /*
 999     Determine image type from filename prefix or suffix (e.g. image.jpg).
1000   */
1001   assert(image_info != (ImageInfo *) NULL);
1002   assert(image_info->signature == MagickSignature);
1003   if (image->debug != MagickFalse)
1004     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1005       image_info->filename);
1006   assert(image != (Image *) NULL);
1007   assert(image->signature == MagickSignature);
1008   sans_exception=AcquireExceptionInfo();
1009   write_info=CloneImageInfo(image_info);
1010   (void) CopyMagickString(write_info->filename,image->filename,MaxTextExtent);
1011   if (*write_info->magick == '\0')
1012     (void) CopyMagickString(write_info->magick,image->magick,MaxTextExtent);
1013   (void) SetImageInfo(write_info,1,sans_exception);
1014   if (LocaleCompare(write_info->magick,"clipmask") == 0)
1015     {
1016       if (image->clip_mask == (Image *) NULL)
1017         {
1018           (void) ThrowMagickException(&image->exception,GetMagickModule(),
1019             OptionError,"NoClipPathDefined","`%s'",image->filename);
1020           return(MagickFalse);
1021         }
1022       image=image->clip_mask;
1023       (void) SetImageInfo(write_info,1,sans_exception);
1024     }
1025   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1026   (void) CopyMagickString(image->filename,write_info->filename,MaxTextExtent);
1027   domain=CoderPolicyDomain;
1028   rights=WritePolicyRights;
1029   if (IsRightsAuthorized(domain,rights,write_info->magick) == MagickFalse)
1030     {
1031       sans_exception=DestroyExceptionInfo(sans_exception);
1032       errno=EPERM;
1033       ThrowBinaryException(PolicyError,"NotAuthorized",filename);
1034     }
1035   magick_info=GetMagickInfo(write_info->magick,sans_exception);
1036   sans_exception=DestroyExceptionInfo(sans_exception);
1037   if (magick_info != (const MagickInfo *) NULL)
1038     {
1039       if (GetMagickEndianSupport(magick_info) == MagickFalse)
1040         image->endian=UndefinedEndian;
1041       else
1042         if ((image_info->endian == UndefinedEndian) &&
1043             (GetMagickRawSupport(magick_info) != MagickFalse))
1044           {
1045             unsigned long
1046               lsb_first;
1047
1048             lsb_first=1;
1049             image->endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
1050          }
1051     }
1052   (void) SyncImageProfiles(image);
1053   option=GetImageOption(image_info,"delegate:bimodal");
1054   if ((option != (const char *) NULL) &&
1055       (IsMagickTrue(option) != MagickFalse) &&
1056       (write_info->page == (char *) NULL) &&
1057       (GetPreviousImageInList(image) == (Image *) NULL) &&
1058       (GetNextImageInList(image) == (Image *) NULL) &&
1059       (IsTaintImage(image) == MagickFalse))
1060     {
1061       delegate_info=GetDelegateInfo(image->magick,write_info->magick,
1062         &image->exception);
1063       if ((delegate_info != (const DelegateInfo *) NULL) &&
1064           (GetDelegateMode(delegate_info) == 0) &&
1065           (IsPathAccessible(image->magick_filename) != MagickFalse))
1066         {
1067           /*
1068             Process image with bi-modal delegate.
1069           */
1070           (void) CopyMagickString(image->filename,image->magick_filename,
1071             MaxTextExtent);
1072           status=InvokeDelegate(write_info,image,image->magick,
1073             write_info->magick,&image->exception);
1074           write_info=DestroyImageInfo(write_info);
1075           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1076           return(status);
1077         }
1078     }
1079   status=MagickFalse;
1080   temporary=MagickFalse;
1081   if ((magick_info != (const MagickInfo *) NULL) &&
1082       (GetMagickSeekableStream(magick_info) != MagickFalse))
1083     {
1084       char
1085         filename[MaxTextExtent];
1086
1087       (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1088       status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
1089       (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1090       if (status != MagickFalse)
1091         {
1092           if (IsBlobSeekable(image) == MagickFalse)
1093             {
1094               /*
1095                 A seekable stream is required by the encoder.
1096               */
1097               (void) CopyMagickString(write_info->filename,image->filename,
1098                 MaxTextExtent);
1099               (void) AcquireUniqueFilename(image->filename);
1100               temporary=MagickTrue;
1101             }
1102           (void) CloseBlob(image);
1103         }
1104     }
1105   if (constitute_semaphore == (SemaphoreInfo *) NULL)
1106     AcquireSemaphoreInfo(&constitute_semaphore);
1107   if ((magick_info != (const MagickInfo *) NULL) &&
1108       (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1109     {
1110       /*
1111         Call appropriate image writer based on image type.
1112       */
1113       thread_support=GetMagickThreadSupport(magick_info);
1114       if ((thread_support & EncoderThreadSupport) == 0)
1115         LockSemaphoreInfo(constitute_semaphore);
1116       status=GetImageEncoder(magick_info)(write_info,image);
1117       if ((thread_support & EncoderThreadSupport) == 0)
1118         UnlockSemaphoreInfo(constitute_semaphore);
1119     }
1120   else
1121     {
1122       delegate_info=GetDelegateInfo((char *) NULL,write_info->magick,
1123         &image->exception);
1124       if (delegate_info != (DelegateInfo *) NULL)
1125         {
1126           /*
1127             Process the image with delegate.
1128           */
1129           *write_info->filename='\0';
1130           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1131             LockSemaphoreInfo(constitute_semaphore);
1132           status=InvokeDelegate(write_info,image,(char *) NULL,
1133             write_info->magick,&image->exception);
1134           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1135             UnlockSemaphoreInfo(constitute_semaphore);
1136           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1137         }
1138       else
1139         {
1140           sans_exception=AcquireExceptionInfo();
1141           magick_info=GetMagickInfo(write_info->magick,sans_exception);
1142           sans_exception=DestroyExceptionInfo(sans_exception);
1143           if ((write_info->affirm == MagickFalse) &&
1144               (magick_info == (const MagickInfo *) NULL))
1145             {
1146               (void) CopyMagickString(write_info->magick,image->magick,
1147                 MaxTextExtent);
1148               magick_info=GetMagickInfo(write_info->magick,&image->exception);
1149             }
1150           if ((magick_info == (const MagickInfo *) NULL) ||
1151               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1152             {
1153               magick_info=GetMagickInfo(image->magick,&image->exception);
1154               (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1155             }
1156           if ((magick_info == (const MagickInfo *) NULL) ||
1157               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1158             (void) ThrowMagickException(&image->exception,GetMagickModule(),
1159               MissingDelegateError,"NoEncodeDelegateForThisImageFormat","`%s'",
1160               image->filename);
1161           else
1162             {
1163               /*
1164                 Call appropriate image writer based on image type.
1165               */
1166               thread_support=GetMagickThreadSupport(magick_info);
1167               if ((thread_support & EncoderThreadSupport) == 0)
1168                 LockSemaphoreInfo(constitute_semaphore);
1169               status=GetImageEncoder(magick_info)(write_info,image);
1170               if ((thread_support & EncoderThreadSupport) == 0)
1171                 UnlockSemaphoreInfo(constitute_semaphore);
1172             }
1173         }
1174     }
1175   if (GetBlobError(image) != MagickFalse)
1176     ThrowFileException(&image->exception,FileOpenError,
1177       "AnErrorHasOccurredWritingToFile",image->filename);
1178   if (temporary == MagickTrue)
1179     {
1180       /*
1181         Copy temporary image file to permanent.
1182       */
1183       status=OpenBlob(write_info,image,ReadBinaryBlobMode,&image->exception);
1184       if (status != MagickFalse)
1185         status=ImageToFile(image,write_info->filename,&image->exception);
1186       (void) RelinquishUniqueFileResource(image->filename);
1187       (void) CopyMagickString(image->filename,write_info->filename,
1188         MaxTextExtent);
1189       (void) CloseBlob(image);
1190     }
1191   if ((LocaleCompare(write_info->magick,"info") != 0) &&
1192       (write_info->verbose != MagickFalse))
1193     (void) IdentifyImage(image,stdout,MagickFalse);
1194   write_info=DestroyImageInfo(write_info);
1195   return(status);
1196 }
1197 \f
1198 /*
1199 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1200 %                                                                             %
1201 %                                                                             %
1202 %                                                                             %
1203 %   W r i t e I m a g e s                                                     %
1204 %                                                                             %
1205 %                                                                             %
1206 %                                                                             %
1207 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1208 %
1209 %  WriteImages() writes an image sequence.
1210 %
1211 %  The format of the WriteImages method is:
1212 %
1213 %      MagickBooleanType WriteImages(const ImageInfo *image_info,Image *images,
1214 %        const char *filename,ExceptionInfo *exception)
1215 %
1216 %  A description of each parameter follows:
1217 %
1218 %    o image_info: the image info.
1219 %
1220 %    o images: the image list.
1221 %
1222 %    o filename: the image filename.
1223 %
1224 %    o exception: return any errors or warnings in this structure.
1225 %
1226 */
1227 MagickExport MagickBooleanType WriteImages(const ImageInfo *image_info,
1228   Image *images,const char *filename,ExceptionInfo *exception)
1229 {
1230 #define WriteImageTag  "Write/Image"
1231
1232   BlobInfo
1233     *blob;
1234
1235   ExceptionInfo
1236     *sans_exception;
1237
1238   ImageInfo
1239     *write_info;
1240
1241   MagickBooleanType
1242     proceed;
1243
1244   MagickOffsetType
1245     i;
1246
1247   MagickProgressMonitor
1248     progress_monitor;
1249
1250   MagickSizeType
1251     number_images;
1252
1253   MagickStatusType
1254     status;
1255
1256   register Image
1257     *p;
1258
1259   assert(image_info != (const ImageInfo *) NULL);
1260   assert(image_info->signature == MagickSignature);
1261   assert(images != (Image *) NULL);
1262   assert(images->signature == MagickSignature);
1263   if (images->debug != MagickFalse)
1264     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
1265   assert(exception != (ExceptionInfo *) NULL);
1266   write_info=CloneImageInfo(image_info);
1267   images=GetFirstImageInList(images);
1268   blob=CloneBlobInfo(images->blob);  /* thread specific I/O handler */
1269   DestroyBlob(images);
1270   images->blob=blob;
1271   if (filename != (const char *) NULL)
1272     for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1273       (void) CopyMagickString(p->filename,filename,MaxTextExtent);
1274   (void) CopyMagickString(write_info->filename,images->filename,MaxTextExtent);
1275   if (*write_info->magick == '\0')
1276     (void) CopyMagickString(write_info->magick,images->magick,MaxTextExtent);
1277   sans_exception=AcquireExceptionInfo();
1278   (void) SetImageInfo(write_info,(unsigned int) GetImageListLength(images),
1279     sans_exception);
1280   sans_exception=DestroyExceptionInfo(sans_exception);
1281   p=images;
1282   for ( ; GetNextImageInList(p) != (Image *) NULL; p=GetNextImageInList(p))
1283     if (p->scene >= GetNextImageInList(p)->scene)
1284       {
1285         register long
1286           i;
1287
1288         /*
1289           Generate consistent scene numbers.
1290         */
1291         i=(long) images->scene;
1292         for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1293           p->scene=(unsigned long) i++;
1294         break;
1295       }
1296   /*
1297     Write images.
1298   */
1299   status=MagickTrue;
1300   progress_monitor=(MagickProgressMonitor) NULL;
1301   i=0;
1302   number_images=GetImageListLength(images);
1303   for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1304   {
1305     if (number_images != 1)
1306       progress_monitor=SetImageProgressMonitor(p,(MagickProgressMonitor) NULL,
1307         p->client_data);
1308     status&=WriteImage(write_info,p);
1309     GetImageException(p,exception);
1310     if (number_images != 1)
1311       (void) SetImageProgressMonitor(p,progress_monitor,p->client_data);
1312     if (write_info->adjoin != MagickFalse)
1313       break;
1314     if (number_images != 1)
1315       {
1316         proceed=SetImageProgress(p,WriteImageTag,i++,number_images);
1317         if (proceed == MagickFalse)
1318           break;
1319       }
1320   }
1321   write_info=DestroyImageInfo(write_info);
1322   return(status != 0 ? MagickTrue : MagickFalse);
1323 }