granicus.if.org Git - imagemagick/blob - MagickCore/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 1999-2012 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 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/blob.h"
  44 #include "MagickCore/blob-private.h"
  45 #include "MagickCore/exception.h"
  46 #include "MagickCore/exception-private.h"
  47 #include "MagickCore/cache.h"
  48 #include "MagickCore/client.h"
  49 #include "MagickCore/constitute.h"
  50 #include "MagickCore/constitute-private.h"
  51 #include "MagickCore/delegate.h"
  52 #include "MagickCore/geometry.h"
  53 #include "MagickCore/identify.h"
  54 #include "MagickCore/image-private.h"
  55 #include "MagickCore/list.h"
  56 #include "MagickCore/magick.h"
  57 #include "MagickCore/memory_.h"
  58 #include "MagickCore/monitor.h"
  59 #include "MagickCore/monitor-private.h"
  60 #include "MagickCore/option.h"
  61 #include "MagickCore/pixel.h"
  62 #include "MagickCore/pixel-accessor.h"
  63 #include "MagickCore/policy.h"
  64 #include "MagickCore/profile.h"
  65 #include "MagickCore/profile-private.h"
  66 #include "MagickCore/property.h"
  67 #include "MagickCore/quantum.h"
  68 #include "MagickCore/resize.h"
  69 #include "MagickCore/resource_.h"
  70 #include "MagickCore/semaphore.h"
  71 #include "MagickCore/statistic.h"
  72 #include "MagickCore/stream.h"
  73 #include "MagickCore/string_.h"
  74 #include "MagickCore/string-private.h"
  75 #include "MagickCore/timer.h"
  76 #include "MagickCore/token.h"
  77 #include "MagickCore/transform.h"
  78 #include "MagickCore/utility.h"
  79 #include "MagickCore/utility-private.h"
  80 \f
  81 static SemaphoreInfo
  82   *constitute_semaphore = (SemaphoreInfo *) NULL;
  83 \f
  84 /*
  85 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  86 %                                                                             %
  87 %                                                                             %
  88 %                                                                             %
  89 +   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                       %
  90 %                                                                             %
  91 %                                                                             %
  92 %                                                                             %
  93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  94 %
  95 %  ConstituteComponentGenesis() instantiates the constitute component.
  96 %
  97 %  The format of the ConstituteComponentGenesis method is:
  98 %
  99 %      MagickBooleanType ConstituteComponentGenesis(void)
 100 %
 101 */
 102 MagickPrivate MagickBooleanType ConstituteComponentGenesis(void)
 103 {
 104   AcquireSemaphoreInfo(&constitute_semaphore);
 105   return(MagickTrue);
 106 }
 107 \f
 108 /*
 109 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 110 %                                                                             %
 111 %                                                                             %
 112 %                                                                             %
 113 +   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                     %
 114 %                                                                             %
 115 %                                                                             %
 116 %                                                                             %
 117 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 118 %
 119 %  ConstituteComponentTerminus() destroys the constitute component.
 120 %
 121 %  The format of the ConstituteComponentTerminus method is:
 122 %
 123 %      ConstituteComponentTerminus(void)
 124 %
 125 */
 126 MagickPrivate void ConstituteComponentTerminus(void)
 127 {
 128   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 129     AcquireSemaphoreInfo(&constitute_semaphore);
 130   DestroySemaphoreInfo(&constitute_semaphore);
 131 }
 132 \f
 133 /*
 134 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 135 %                                                                             %
 136 %                                                                             %
 137 %                                                                             %
 138 %   C o n s t i t u t e I m a g e                                             %
 139 %                                                                             %
 140 %                                                                             %
 141 %                                                                             %
 142 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 143 %
 144 %  ConstituteImage() returns an image from the pixel data you supply.
 145 %  The pixel data must be in scanline order top-to-bottom.  The data can be
 146 %  char, short int, int, float, or double.  Float and double require the
 147 %  pixels to be normalized [0..1], otherwise [0..QuantumRange].  For example, to
 148 %  create a 640x480 image from unsigned red-green-blue character data, use:
 149 %
 150 %      image = ConstituteImage(640,480,"RGB",CharPixel,pixels,&exception);
 151 %
 152 %  The format of the ConstituteImage method is:
 153 %
 154 %      Image *ConstituteImage(const size_t columns,const size_t rows,
 155 %        const char *map,const StorageType storage,const void *pixels,
 156 %        ExceptionInfo *exception)
 157 %
 158 %  A description of each parameter follows:
 159 %
 160 %    o columns: width in pixels of the image.
 161 %
 162 %    o rows: height in pixels of the image.
 163 %
 164 %    o map:  This string reflects the expected ordering of the pixel array.
 165 %      It can be any combination or order of R = red, G = green, B = blue,
 166 %      A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan,
 167 %      Y = yellow, M = magenta, K = black, I = intensity (for grayscale),
 168 %      P = pad.
 169 %
 170 %    o storage: Define the data type of the pixels.  Float and double types are
 171 %      expected to be normalized [0..1] otherwise [0..QuantumRange].  Choose
 172 %      from these types: CharPixel, DoublePixel, FloatPixel, IntegerPixel,
 173 %      LongPixel, QuantumPixel, or ShortPixel.
 174 %
 175 %    o pixels: This array of values contain the pixel components as defined by
 176 %      map and type.  You must preallocate this array where the expected
 177 %      length varies depending on the values of width, height, map, and type.
 178 %
 179 %    o exception: return any errors or warnings in this structure.
 180 %
 181 */
 182 MagickExport Image *ConstituteImage(const size_t columns,
 183   const size_t rows,const char *map,const StorageType storage,
 184   const void *pixels,ExceptionInfo *exception)
 185 {
 186   Image
 187     *image;
 188
 189   MagickBooleanType
 190     status;
 191
 192   /*
 193     Allocate image structure.
 194   */
 195   assert(map != (const char *) NULL);
 196   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",map);
 197   assert(pixels != (void *) NULL);
 198   assert(exception != (ExceptionInfo *) NULL);
 199   assert(exception->signature == MagickSignature);
 200   image=AcquireImage((ImageInfo *) NULL,exception);
 201   if (image == (Image *) NULL)
 202     return((Image *) NULL);
 203   if ((columns == 0) || (rows == 0))
 204     ThrowImageException(OptionError,"NonZeroWidthAndHeightRequired");
 205   image->columns=columns;
 206   image->rows=rows;
 207   (void) SetImageBackgroundColor(image,exception);
 208   status=ImportImagePixels(image,0,0,columns,rows,map,storage,pixels,exception);
 209   if (status == MagickFalse)
 210      image=DestroyImage(image);
 211   return(image);
 212 }
 213 \f
 214 /*
 215 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 216 %                                                                             %
 217 %                                                                             %
 218 %                                                                             %
 219 %   P i n g I m a g e                                                         %
 220 %                                                                             %
 221 %                                                                             %
 222 %                                                                             %
 223 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 224 %
 225 %  PingImage() returns all the properties of an image or image sequence
 226 %  except for the pixels.  It is much faster and consumes far less memory
 227 %  than ReadImage().  On failure, a NULL image is returned and exception
 228 %  describes the reason for the failure.
 229 %
 230 %  The format of the PingImage method is:
 231 %
 232 %      Image *PingImage(const ImageInfo *image_info,ExceptionInfo *exception)
 233 %
 234 %  A description of each parameter follows:
 235 %
 236 %    o image_info: Ping the image defined by the file or filename members of
 237 %      this structure.
 238 %
 239 %    o exception: return any errors or warnings in this structure.
 240 %
 241 */
 242
 243 #if defined(__cplusplus) || defined(c_plusplus)
 244 extern "C" {
 245 #endif
 246
 247 static size_t PingStream(const Image *magick_unused(image),
 248   const void *magick_unused(pixels),const size_t columns)
 249 {
 250   return(columns);
 251 }
 252
 253 #if defined(__cplusplus) || defined(c_plusplus)
 254 }
 255 #endif
 256
 257 MagickExport Image *PingImage(const ImageInfo *image_info,
 258   ExceptionInfo *exception)
 259 {
 260   Image
 261     *image;
 262
 263   ImageInfo
 264     *ping_info;
 265
 266   assert(image_info != (ImageInfo *) NULL);
 267   assert(image_info->signature == MagickSignature);
 268   if (image_info->debug != MagickFalse)
 269     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 270       image_info->filename);
 271   assert(exception != (ExceptionInfo *) NULL);
 272   ping_info=CloneImageInfo(image_info);
 273   ping_info->ping=MagickTrue;
 274   image=ReadStream(ping_info,&PingStream,exception);
 275   if (image != (Image *) NULL)
 276     {
 277       ResetTimer(&image->timer);
 278       if (ping_info->verbose != MagickFalse)
 279         (void) IdentifyImage(image,stdout,MagickFalse,exception);
 280     }
 281   ping_info=DestroyImageInfo(ping_info);
 282   return(image);
 283 }
 284 \f
 285 /*
 286 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 287 %                                                                             %
 288 %                                                                             %
 289 %                                                                             %
 290 %   P i n g I m a g e s                                                       %
 291 %                                                                             %
 292 %                                                                             %
 293 %                                                                             %
 294 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 295 %
 296 %  PingImages() pings one or more images and returns them as an image list.
 297 %
 298 %  The format of the PingImage method is:
 299 %
 300 %      Image *PingImages(ImageInfo *image_info,const char *filename,
 301 %        ExceptionInfo *exception)
 302 %
 303 %  A description of each parameter follows:
 304 %
 305 %    o image_info: the image info.
 306 %
 307 %    o filename: the image filename.
 308 %
 309 %    o exception: return any errors or warnings in this structure.
 310 %
 311 */
 312 MagickExport Image *PingImages(ImageInfo *image_info,const char *filename,
 313   ExceptionInfo *exception)
 314 {
 315   char
 316     ping_filename[MaxTextExtent];
 317
 318   Image
 319     *image,
 320     *images;
 321
 322   ImageInfo
 323     *read_info;
 324
 325   /*
 326     Ping image list from a file.
 327   */
 328   assert(image_info != (ImageInfo *) NULL);
 329   assert(image_info->signature == MagickSignature);
 330   if (image_info->debug != MagickFalse)
 331     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 332       image_info->filename);
 333   assert(exception != (ExceptionInfo *) NULL);
 334   (void) SetImageOption(image_info,"filename",filename);
 335   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 336   (void) InterpretImageFilename(image_info,(Image *) NULL,image_info->filename,
 337     (int) image_info->scene,ping_filename,exception);
 338   if (LocaleCompare(ping_filename,image_info->filename) != 0)
 339     {
 340       ExceptionInfo
 341         *sans;
 342
 343       ssize_t
 344         extent,
 345         scene;
 346
 347       /*
 348         Images of the form image-%d.png[1-5].
 349       */
 350       read_info=CloneImageInfo(image_info);
 351       sans=AcquireExceptionInfo();
 352       (void) SetImageInfo(read_info,0,sans);
 353       sans=DestroyExceptionInfo(sans);
 354       (void) CopyMagickString(ping_filename,read_info->filename,MaxTextExtent);
 355       images=NewImageList();
 356       extent=(ssize_t) (read_info->scene+read_info->number_scenes);
 357       for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
 358       {
 359         (void) InterpretImageFilename(image_info,(Image *) NULL,ping_filename,
 360           (int) scene,read_info->filename,exception);
 361         image=PingImage(read_info,exception);
 362         if (image == (Image *) NULL)
 363           continue;
 364         AppendImageToList(&images,image);
 365       }
 366       read_info=DestroyImageInfo(read_info);
 367       return(images);
 368     }
 369   return(PingImage(image_info,exception));
 370 }
 371 \f
 372 /*
 373 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 374 %                                                                             %
 375 %                                                                             %
 376 %                                                                             %
 377 %   R e a d I m a g e                                                         %
 378 %                                                                             %
 379 %                                                                             %
 380 %                                                                             %
 381 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 382 %
 383 %  ReadImage() reads an image or image sequence from a file or file handle.
 384 %  The method returns a NULL if there is a memory shortage or if the image
 385 %  cannot be read.  On failure, a NULL image is returned and exception
 386 %  describes the reason for the failure.
 387 %
 388 %  The format of the ReadImage method is:
 389 %
 390 %      Image *ReadImage(const ImageInfo *image_info,ExceptionInfo *exception)
 391 %
 392 %  A description of each parameter follows:
 393 %
 394 %    o image_info: Read the image defined by the file or filename members of
 395 %      this structure.
 396 %
 397 %    o exception: return any errors or warnings in this structure.
 398 %
 399 */
 400 MagickExport Image *ReadImage(const ImageInfo *image_info,
 401   ExceptionInfo *exception)
 402 {
 403   char
 404     filename[MaxTextExtent],
 405     magick[MaxTextExtent],
 406     magick_filename[MaxTextExtent];
 407
 408   const char
 409     *value;
 410
 411   const DelegateInfo
 412     *delegate_info;
 413
 414   const MagickInfo
 415     *magick_info;
 416
 417   ExceptionInfo
 418     *sans_exception;
 419
 420   GeometryInfo
 421     geometry_info;
 422
 423   Image
 424     *image,
 425     *next;
 426
 427   ImageInfo
 428     *read_info;
 429
 430   MagickStatusType
 431     flags,
 432     thread_support;
 433
 434   PolicyDomain
 435     domain;
 436
 437   PolicyRights
 438     rights;
 439
 440   /*
 441     Determine image type from filename prefix or suffix (e.g. image.jpg).
 442   */
 443   assert(image_info != (ImageInfo *) NULL);
 444   assert(image_info->signature == MagickSignature);
 445   assert(image_info->filename != (char *) NULL);
 446   if (image_info->debug != MagickFalse)
 447     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 448       image_info->filename);
 449   assert(exception != (ExceptionInfo *) NULL);
 450   read_info=CloneImageInfo(image_info);
 451   (void) CopyMagickString(magick_filename,read_info->filename,MaxTextExtent);
 452   (void) SetImageInfo(read_info,0,exception);
 453   (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
 454   (void) CopyMagickString(magick,read_info->magick,MaxTextExtent);
 455   domain=CoderPolicyDomain;
 456   rights=ReadPolicyRights;
 457   if (IsRightsAuthorized(domain,rights,read_info->magick) == MagickFalse)
 458     {
 459       errno=EPERM;
 460       (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
 461         "NotAuthorized","`%s'",read_info->filename);
 462       return((Image *) NULL);
 463     }
 464   /*
 465     Call appropriate image reader based on image type.
 466   */
 467   sans_exception=AcquireExceptionInfo();
 468   magick_info=GetMagickInfo(read_info->magick,sans_exception);
 469   sans_exception=DestroyExceptionInfo(sans_exception);
 470   if (magick_info != (const MagickInfo *) NULL)
 471     {
 472       if (GetMagickEndianSupport(magick_info) == MagickFalse)
 473         read_info->endian=UndefinedEndian;
 474       else
 475         if ((image_info->endian == UndefinedEndian) &&
 476             (GetMagickRawSupport(magick_info) != MagickFalse))
 477           {
 478             size_t
 479               lsb_first;
 480
 481             lsb_first=1;
 482             read_info->endian=(*(char *) &lsb_first) == 1 ? LSBEndian :
 483               MSBEndian;
 484          }
 485     }
 486   if ((magick_info != (const MagickInfo *) NULL) &&
 487       (GetMagickSeekableStream(magick_info) != MagickFalse))
 488     {
 489       MagickBooleanType
 490         status;
 491
 492       image=AcquireImage(read_info,exception);
 493       (void) CopyMagickString(image->filename,read_info->filename,
 494         MaxTextExtent);
 495       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 496       if (status == MagickFalse)
 497         {
 498           read_info=DestroyImageInfo(read_info);
 499           image=DestroyImage(image);
 500           return((Image *) NULL);
 501         }
 502       if (IsBlobSeekable(image) == MagickFalse)
 503         {
 504           /*
 505             Coder requires a seekable stream.
 506           */
 507           *read_info->filename='\0';
 508           status=ImageToFile(image,read_info->filename,exception);
 509           if (status == MagickFalse)
 510             {
 511               (void) CloseBlob(image);
 512               read_info=DestroyImageInfo(read_info);
 513               image=DestroyImage(image);
 514               return((Image *) NULL);
 515             }
 516           read_info->temporary=MagickTrue;
 517         }
 518       (void) CloseBlob(image);
 519       image=DestroyImage(image);
 520     }
 521   image=NewImageList();
 522   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 523     AcquireSemaphoreInfo(&constitute_semaphore);
 524   if ((magick_info != (const MagickInfo *) NULL) &&
 525       (GetImageDecoder(magick_info) != (DecodeImageHandler *) NULL))
 526     {
 527       thread_support=GetMagickThreadSupport(magick_info);
 528       if ((thread_support & DecoderThreadSupport) == 0)
 529         LockSemaphoreInfo(constitute_semaphore);
 530       image=GetImageDecoder(magick_info)(read_info,exception);
 531       if ((thread_support & DecoderThreadSupport) == 0)
 532         UnlockSemaphoreInfo(constitute_semaphore);
 533     }
 534   else
 535     {
 536       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 537       if (delegate_info == (const DelegateInfo *) NULL)
 538         {
 539           (void) ThrowMagickException(exception,GetMagickModule(),
 540             MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 541             read_info->filename);
 542           if (read_info->temporary != MagickFalse)
 543             (void) RelinquishUniqueFileResource(read_info->filename);
 544           read_info=DestroyImageInfo(read_info);
 545           return((Image *) NULL);
 546         }
 547       /*
 548         Let our decoding delegate process the image.
 549       */
 550       image=AcquireImage(read_info,exception);
 551       if (image == (Image *) NULL)
 552         {
 553           read_info=DestroyImageInfo(read_info);
 554           return((Image *) NULL);
 555         }
 556       (void) CopyMagickString(image->filename,read_info->filename,
 557         MaxTextExtent);
 558       *read_info->filename='\0';
 559       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 560         LockSemaphoreInfo(constitute_semaphore);
 561       (void) InvokeDelegate(read_info,image,read_info->magick,(char *) NULL,
 562         exception);
 563       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 564         UnlockSemaphoreInfo(constitute_semaphore);
 565       image=DestroyImageList(image);
 566       read_info->temporary=MagickTrue;
 567       (void) SetImageInfo(read_info,0,exception);
 568       magick_info=GetMagickInfo(read_info->magick,exception);
 569       if ((magick_info == (const MagickInfo *) NULL) ||
 570           (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
 571         {
 572           if (IsPathAccessible(read_info->filename) != MagickFalse)
 573             (void) ThrowMagickException(exception,GetMagickModule(),
 574               MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 575               read_info->filename);
 576           else
 577             ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 578               read_info->filename);
 579           read_info=DestroyImageInfo(read_info);
 580           return((Image *) NULL);
 581         }
 582       thread_support=GetMagickThreadSupport(magick_info);
 583       if ((thread_support & DecoderThreadSupport) == 0)
 584         LockSemaphoreInfo(constitute_semaphore);
 585       image=(Image *) (GetImageDecoder(magick_info))(read_info,exception);
 586       if ((thread_support & DecoderThreadSupport) == 0)
 587         UnlockSemaphoreInfo(constitute_semaphore);
 588     }
 589   if (read_info->temporary != MagickFalse)
 590     {
 591       (void) RelinquishUniqueFileResource(read_info->filename);
 592       read_info->temporary=MagickFalse;
 593       if (image != (Image *) NULL)
 594         (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 595     }
 596   if (image == (Image *) NULL)
 597     {
 598       read_info=DestroyImageInfo(read_info);
 599       return(image);
 600     }
 601   if (exception->severity >= ErrorException)
 602     (void) LogMagickEvent(ExceptionEvent,GetMagickModule(),
 603       "Coder (%s) generated an image despite an error (%d), "
 604       "notify the developers",image->magick,exception->severity);
 605   if (IsBlobTemporary(image) != MagickFalse)
 606     (void) RelinquishUniqueFileResource(read_info->filename);
 607   if ((GetNextImageInList(image) != (Image *) NULL) &&
 608       (IsSceneGeometry(read_info->scenes,MagickFalse) != MagickFalse))
 609     {
 610       Image
 611         *clones;
 612
 613       clones=CloneImages(image,read_info->scenes,exception);
 614       if (clones == (Image *) NULL)
 615         (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 616           "SubimageSpecificationReturnsNoImages","`%s'",read_info->filename);
 617       else
 618         {
 619           image=DestroyImageList(image);
 620           image=GetFirstImageInList(clones);
 621         }
 622     }
 623   if (GetBlobError(image) != MagickFalse)
 624     {
 625       ThrowFileException(exception,FileOpenError,
 626         "AnErrorHasOccurredReadingFromFile",read_info->filename);
 627       image=DestroyImageList(image);
 628       read_info=DestroyImageInfo(read_info);
 629       return((Image *) NULL);
 630     }
 631   for (next=image; next != (Image *) NULL; next=GetNextImageInList(next))
 632   {
 633     char
 634       magick_path[MaxTextExtent],
 635       *property,
 636       timestamp[MaxTextExtent];
 637
 638     const char
 639       *option;
 640
 641     const StringInfo
 642       *profile;
 643
 644     next->taint=MagickFalse;
 645     GetPathComponent(magick_filename,MagickPath,magick_path);
 646     if (*magick_path == '\0')
 647       (void) CopyMagickString(next->magick,magick,MaxTextExtent);
 648     (void) CopyMagickString(next->magick_filename,magick_filename,
 649       MaxTextExtent);
 650     if (IsBlobTemporary(image) != MagickFalse)
 651       (void) CopyMagickString(next->filename,filename,MaxTextExtent);
 652     if (next->magick_columns == 0)
 653       next->magick_columns=next->columns;
 654     if (next->magick_rows == 0)
 655       next->magick_rows=next->rows;
 656     if ((next->colorspace == sRGBColorspace) && (next->gamma == 1.0))
 657       next->colorspace=RGBColorspace;
 658     value=GetImageProperty(next,"tiff:Orientation",exception);
 659     if (value == (char *) NULL)
 660       value=GetImageProperty(next,"exif:Orientation",exception);
 661     if (value != (char *) NULL)
 662       {
 663         next->orientation=(OrientationType) StringToLong(value);
 664         (void) DeleteImageProperty(next,"tiff:Orientation");
 665         (void) DeleteImageProperty(next,"exif:Orientation");
 666       }
 667     value=GetImageProperty(next,"exif:XResolution",exception);
 668     if (value != (char *) NULL)
 669       {
 670         geometry_info.rho=next->resolution.x;
 671         geometry_info.sigma=1.0;
 672         flags=ParseGeometry(value,&geometry_info);
 673         if (geometry_info.sigma != 0)
 674           next->resolution.x=geometry_info.rho/geometry_info.sigma;
 675         (void) DeleteImageProperty(next,"exif:XResolution");
 676       }
 677     value=GetImageProperty(next,"exif:YResolution",exception);
 678     if (value != (char *) NULL)
 679       {
 680         geometry_info.rho=next->resolution.y;
 681         geometry_info.sigma=1.0;
 682         flags=ParseGeometry(value,&geometry_info);
 683         if (geometry_info.sigma != 0)
 684           next->resolution.y=geometry_info.rho/geometry_info.sigma;
 685         (void) DeleteImageProperty(next,"exif:YResolution");
 686       }
 687     value=GetImageProperty(next,"tiff:ResolutionUnit",exception);
 688     if (value == (char *) NULL)
 689       value=GetImageProperty(next,"exif:ResolutionUnit",exception);
 690     if (value != (char *) NULL)
 691       {
 692         next->units=(ResolutionType) (StringToLong(value)-1);
 693         (void) DeleteImageProperty(next,"exif:ResolutionUnit");
 694         (void) DeleteImageProperty(next,"tiff:ResolutionUnit");
 695       }
 696     if (next->page.width == 0)
 697       next->page.width=next->columns;
 698     if (next->page.height == 0)
 699       next->page.height=next->rows;
 700     option=GetImageOption(read_info,"caption");
 701     if (option != (const char *) NULL)
 702       {
 703         property=InterpretImageProperties(read_info,next,option,exception);
 704         (void) SetImageProperty(next,"caption",property,exception);
 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,exception);
 711         (void) SetImageProperty(next,"comment",property,exception);
 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,exception);
 718         (void) SetImageProperty(next,"label",property,exception);
 719         property=DestroyString(property);
 720       }
 721     if (LocaleCompare(next->magick,"TEXT") == 0)
 722       (void) ParseAbsoluteGeometry("0x0+0+0",&next->page);
 723     if ((read_info->extract != (char *) NULL) &&
 724         (read_info->stream == (StreamHandler) NULL))
 725       {
 726         RectangleInfo
 727           geometry;
 728
 729         flags=ParseAbsoluteGeometry(read_info->extract,&geometry);
 730         if ((next->columns != geometry.width) ||
 731             (next->rows != geometry.height))
 732           {
 733             if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 734               {
 735                 Image
 736                   *crop_image;
 737
 738                 crop_image=CropImage(next,&geometry,exception);
 739                 if (crop_image != (Image *) NULL)
 740                   ReplaceImageInList(&next,crop_image);
 741               }
 742             else
 743               if (((flags & WidthValue) != 0) || ((flags & HeightValue) != 0))
 744                 {
 745                   Image
 746                     *size_image;
 747
 748                   flags=ParseRegionGeometry(next,read_info->extract,&geometry,
 749                     exception);
 750                   size_image=ResizeImage(next,geometry.width,geometry.height,
 751                     next->filter,exception);
 752                   if (size_image != (Image *) NULL)
 753                     ReplaceImageInList(&next,size_image);
 754                 }
 755           }
 756       }
 757     profile=GetImageProfile(next,"icc");
 758     if (profile == (const StringInfo *) NULL)
 759       profile=GetImageProfile(next,"icm");
 760     profile=GetImageProfile(next,"iptc");
 761     if (profile == (const StringInfo *) NULL)
 762       profile=GetImageProfile(next,"8bim");
 763     (void) FormatMagickTime(GetBlobProperties(next)->st_mtime,MaxTextExtent,
 764       timestamp);
 765     (void) SetImageProperty(next,"date:modify",timestamp,exception);
 766     (void) FormatMagickTime(GetBlobProperties(next)->st_ctime,MaxTextExtent,
 767       timestamp);
 768     (void) SetImageProperty(next,"date:create",timestamp,exception);
 769     option=GetImageOption(image_info,"delay");
 770     if (option != (const char *) NULL)
 771       {
 772         GeometryInfo
 773           geometry_info;
 774
 775         flags=ParseGeometry(option,&geometry_info);
 776         if ((flags & GreaterValue) != 0)
 777           {
 778             if (next->delay > (size_t) floor(geometry_info.rho+0.5))
 779               next->delay=(size_t) floor(geometry_info.rho+0.5);
 780           }
 781         else
 782           if ((flags & LessValue) != 0)
 783             {
 784               if (next->delay < (size_t) floor(geometry_info.rho+0.5))
 785                 next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 786             }
 787           else
 788             next->delay=(size_t) floor(geometry_info.rho+0.5);
 789         if ((flags & SigmaValue) != 0)
 790           next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 791       }
 792     option=GetImageOption(image_info,"dispose");
 793     if (option != (const char *) NULL)
 794       next->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
 795         MagickFalse,option);
 796     if (read_info->verbose != MagickFalse)
 797       (void) IdentifyImage(next,stderr,MagickFalse,exception);
 798     image=next;
 799   }
 800   read_info=DestroyImageInfo(read_info);
 801   return(GetFirstImageInList(image));
 802 }
 803 \f
 804 /*
 805 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 806 %                                                                             %
 807 %                                                                             %
 808 %                                                                             %
 809 %   R e a d I m a g e s                                                       %
 810 %                                                                             %
 811 %                                                                             %
 812 %                                                                             %
 813 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 814 %
 815 %  ReadImages() reads one or more images and returns them as an image list.
 816 %
 817 %  The format of the ReadImage method is:
 818 %
 819 %      Image *ReadImages(ImageInfo *image_info,const char *filename,
 820 %        ExceptionInfo *exception)
 821 %
 822 %  A description of each parameter follows:
 823 %
 824 %    o image_info: the image info.
 825 %
 826 %    o filename: the image filename.
 827 %
 828 %    o exception: return any errors or warnings in this structure.
 829 %
 830 */
 831 MagickExport Image *ReadImages(ImageInfo *image_info,const char *filename,
 832   ExceptionInfo *exception)
 833 {
 834   char
 835     read_filename[MaxTextExtent];
 836
 837   Image
 838     *image,
 839     *images;
 840
 841   ImageInfo
 842     *read_info;
 843
 844   /*
 845     Read image list from a file.
 846   */
 847   assert(image_info != (ImageInfo *) NULL);
 848   assert(image_info->signature == MagickSignature);
 849   if (image_info->debug != MagickFalse)
 850     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 851       image_info->filename);
 852   assert(exception != (ExceptionInfo *) NULL);
 853   (void) SetImageOption(image_info,"filename",filename);
 854   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 855   (void) InterpretImageFilename(image_info,(Image *) NULL,filename,
 856     (int) image_info->scene,read_filename,exception);
 857   if (LocaleCompare(read_filename,image_info->filename) != 0)
 858     {
 859       ExceptionInfo
 860         *sans;
 861
 862       ssize_t
 863         extent,
 864         scene;
 865
 866       /*
 867         Images of the form image-%d.png[1-5].
 868       */
 869       read_info=CloneImageInfo(image_info);
 870       sans=AcquireExceptionInfo();
 871       (void) SetImageInfo(read_info,0,sans);
 872       sans=DestroyExceptionInfo(sans);
 873       if (read_info->number_scenes == 0)
 874         {
 875           read_info=DestroyImageInfo(read_info);
 876           return(ReadImage(image_info,exception));
 877         }
 878       (void) CopyMagickString(read_filename,read_info->filename,MaxTextExtent);
 879       images=NewImageList();
 880       extent=(ssize_t) (read_info->scene+read_info->number_scenes);
 881       for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
 882       {
 883         (void) InterpretImageFilename(image_info,(Image *) NULL,read_filename,
 884           (int) scene,read_info->filename,exception);
 885         image=ReadImage(read_info,exception);
 886         if (image == (Image *) NULL)
 887           continue;
 888         AppendImageToList(&images,image);
 889       }
 890       read_info=DestroyImageInfo(read_info);
 891       return(images);
 892     }
 893   return(ReadImage(image_info,exception));
 894 }
 895 \f
 896 /*
 897 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 898 %                                                                             %
 899 %                                                                             %
 900 %                                                                             %
 901 +   R e a d I n l i n e I m a g e                                             %
 902 %                                                                             %
 903 %                                                                             %
 904 %                                                                             %
 905 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 906 %
 907 %  ReadInlineImage() reads a Base64-encoded inline image or image sequence.
 908 %  The method returns a NULL if there is a memory shortage or if the image
 909 %  cannot be read.  On failure, a NULL image is returned and exception
 910 %  describes the reason for the failure.
 911 %
 912 %  The format of the ReadInlineImage method is:
 913 %
 914 %      Image *ReadInlineImage(const ImageInfo *image_info,const char *content,
 915 %        ExceptionInfo *exception)
 916 %
 917 %  A description of each parameter follows:
 918 %
 919 %    o image_info: the image info.
 920 %
 921 %    o content: the image encoded in Base64.
 922 %
 923 %    o exception: return any errors or warnings in this structure.
 924 %
 925 */
 926 MagickExport Image *ReadInlineImage(const ImageInfo *image_info,
 927   const char *content,ExceptionInfo *exception)
 928 {
 929   Image
 930     *image;
 931
 932   ImageInfo
 933     *read_info;
 934
 935   unsigned char
 936     *blob;
 937
 938   size_t
 939     length;
 940
 941   register const char
 942     *p;
 943
 944   /*
 945     Skip over header (e.g. data:image/gif;base64,).
 946   */
 947   image=NewImageList();
 948   for (p=content; (*p != ',') && (*p != '\0'); p++) ;
 949   if (*p == '\0')
 950     ThrowReaderException(CorruptImageError,"CorruptImage");
 951   p++;
 952   length=0;
 953   blob=Base64Decode(p,&length);
 954   if (length == 0)
 955     ThrowReaderException(CorruptImageError,"CorruptImage");
 956   read_info=CloneImageInfo(image_info);
 957   (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
 958     (void *) NULL);
 959   *read_info->filename='\0';
 960   *read_info->magick='\0';
 961   image=BlobToImage(read_info,blob,length,exception);
 962   blob=(unsigned char *) RelinquishMagickMemory(blob);
 963   read_info=DestroyImageInfo(read_info);
 964   return(image);
 965 }
 966 \f
 967 /*
 968 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 969 %                                                                             %
 970 %                                                                             %
 971 %                                                                             %
 972 %   W r i t e I m a g e                                                       %
 973 %                                                                             %
 974 %                                                                             %
 975 %                                                                             %
 976 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 977 %
 978 %  WriteImage() writes an image or an image sequence to a file or file handle.
 979 %  If writing to a file is on disk, the name is defined by the filename member
 980 %  of the image structure.  WriteImage() returns MagickFalse is there is a
 981 %  memory shortage or if the image cannot be written.  Check the exception
 982 %  member of image to determine the cause for any failure.
 983 %
 984 %  The format of the WriteImage method is:
 985 %
 986 %      MagickBooleanType WriteImage(const ImageInfo *image_info,Image *image,
 987 %        ExceptionInfo *exception)
 988 %
 989 %  A description of each parameter follows:
 990 %
 991 %    o image_info: the image info.
 992 %
 993 %    o image: the image.
 994 %
 995 %    o exception: return any errors or warnings in this structure.
 996 %
 997 */
 998 MagickExport MagickBooleanType WriteImage(const ImageInfo *image_info,
 999   Image *image,ExceptionInfo *exception)
1000 {
1001   char
1002     filename[MaxTextExtent];
1003
1004   const char
1005     *option;
1006
1007   const DelegateInfo
1008     *delegate_info;
1009
1010   const MagickInfo
1011     *magick_info;
1012
1013   ExceptionInfo
1014     *sans_exception;
1015
1016   ImageInfo
1017     *write_info;
1018
1019   MagickBooleanType
1020     status,
1021     temporary;
1022
1023   MagickStatusType
1024     thread_support;
1025
1026   PolicyDomain
1027     domain;
1028
1029   PolicyRights
1030     rights;
1031
1032   /*
1033     Determine image type from filename prefix or suffix (e.g. image.jpg).
1034   */
1035   assert(image_info != (ImageInfo *) NULL);
1036   assert(image_info->signature == MagickSignature);
1037   if (image->debug != MagickFalse)
1038     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1039       image_info->filename);
1040   assert(image != (Image *) NULL);
1041   assert(image->signature == MagickSignature);
1042   assert(exception != (ExceptionInfo *) NULL);
1043   sans_exception=AcquireExceptionInfo();
1044   write_info=CloneImageInfo(image_info);
1045   (void) CopyMagickString(write_info->filename,image->filename,MaxTextExtent);
1046   if (*write_info->magick == '\0')
1047     (void) CopyMagickString(write_info->magick,image->magick,MaxTextExtent);
1048   (void) SetImageInfo(write_info,1,sans_exception);
1049   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1050   (void) CopyMagickString(image->filename,write_info->filename,MaxTextExtent);
1051   domain=CoderPolicyDomain;
1052   rights=WritePolicyRights;
1053   if (IsRightsAuthorized(domain,rights,write_info->magick) == MagickFalse)
1054     {
1055       sans_exception=DestroyExceptionInfo(sans_exception);
1056       errno=EPERM;
1057       ThrowBinaryException(PolicyError,"NotAuthorized",filename);
1058     }
1059   magick_info=GetMagickInfo(write_info->magick,sans_exception);
1060   sans_exception=DestroyExceptionInfo(sans_exception);
1061   if (magick_info != (const MagickInfo *) NULL)
1062     {
1063       if (GetMagickEndianSupport(magick_info) == MagickFalse)
1064         image->endian=UndefinedEndian;
1065       else
1066         if ((image_info->endian == UndefinedEndian) &&
1067             (GetMagickRawSupport(magick_info) != MagickFalse))
1068           {
1069             size_t
1070               lsb_first;
1071
1072             lsb_first=1;
1073             image->endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
1074          }
1075     }
1076   (void) SyncImageProfiles(image);
1077   option=GetImageOption(image_info,"delegate:bimodal");
1078   if ((IfMagickTrue(IsStringTrue(option))) &&
1079       (write_info->page == (char *) NULL) &&
1080       (GetPreviousImageInList(image) == (Image *) NULL) &&
1081       (GetNextImageInList(image) == (Image *) NULL) &&
1082       (IfMagickFalse(IsTaintImage(image))) )
1083     {
1084       delegate_info=GetDelegateInfo(image->magick,write_info->magick,exception);
1085       if ((delegate_info != (const DelegateInfo *) NULL) &&
1086           (GetDelegateMode(delegate_info) == 0) &&
1087           (IsPathAccessible(image->magick_filename) != MagickFalse))
1088         {
1089           /*
1090             Process image with bi-modal delegate.
1091           */
1092           (void) CopyMagickString(image->filename,image->magick_filename,
1093             MaxTextExtent);
1094           status=InvokeDelegate(write_info,image,image->magick,
1095             write_info->magick,exception);
1096           write_info=DestroyImageInfo(write_info);
1097           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1098           return(status);
1099         }
1100     }
1101   status=MagickFalse;
1102   temporary=MagickFalse;
1103   if ((magick_info != (const MagickInfo *) NULL) &&
1104       (GetMagickSeekableStream(magick_info) != MagickFalse))
1105     {
1106       char
1107         filename[MaxTextExtent];
1108
1109       (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1110       status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
1111       (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1112       if (status != MagickFalse)
1113         {
1114           if (IsBlobSeekable(image) == MagickFalse)
1115             {
1116               /*
1117                 A seekable stream is required by the encoder.
1118               */
1119               write_info->adjoin=MagickTrue;
1120               (void) CopyMagickString(write_info->filename,image->filename,
1121                 MaxTextExtent);
1122               (void) AcquireUniqueFilename(image->filename);
1123               temporary=MagickTrue;
1124             }
1125           (void) CloseBlob(image);
1126         }
1127     }
1128   if (constitute_semaphore == (SemaphoreInfo *) NULL)
1129     AcquireSemaphoreInfo(&constitute_semaphore);
1130   if ((magick_info != (const MagickInfo *) NULL) &&
1131       (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1132     {
1133       /*
1134         Call appropriate image writer based on image type.
1135       */
1136       thread_support=GetMagickThreadSupport(magick_info);
1137       if ((thread_support & EncoderThreadSupport) == 0)
1138         LockSemaphoreInfo(constitute_semaphore);
1139       status=GetImageEncoder(magick_info)(write_info,image,exception);
1140       if ((thread_support & EncoderThreadSupport) == 0)
1141         UnlockSemaphoreInfo(constitute_semaphore);
1142     }
1143   else
1144     {
1145       delegate_info=GetDelegateInfo((char *) NULL,write_info->magick,exception);
1146       if (delegate_info != (DelegateInfo *) NULL)
1147         {
1148           /*
1149             Process the image with delegate.
1150           */
1151           *write_info->filename='\0';
1152           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1153             LockSemaphoreInfo(constitute_semaphore);
1154           status=InvokeDelegate(write_info,image,(char *) NULL,
1155             write_info->magick,exception);
1156           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1157             UnlockSemaphoreInfo(constitute_semaphore);
1158           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1159         }
1160       else
1161         {
1162           sans_exception=AcquireExceptionInfo();
1163           magick_info=GetMagickInfo(write_info->magick,sans_exception);
1164           sans_exception=DestroyExceptionInfo(sans_exception);
1165           if ((write_info->affirm == MagickFalse) &&
1166               (magick_info == (const MagickInfo *) NULL))
1167             {
1168               (void) CopyMagickString(write_info->magick,image->magick,
1169                 MaxTextExtent);
1170               magick_info=GetMagickInfo(write_info->magick,exception);
1171             }
1172           if ((magick_info == (const MagickInfo *) NULL) ||
1173               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1174             {
1175               char
1176                 extension[MaxTextExtent];
1177
1178               GetPathComponent(image->filename,ExtensionPath,extension);
1179               if (*extension != '\0')
1180                 magick_info=GetMagickInfo(extension,exception);
1181               else
1182                 magick_info=GetMagickInfo(image->magick,exception);
1183               (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1184             }
1185           if ((magick_info == (const MagickInfo *) NULL) ||
1186               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1187             (void) ThrowMagickException(exception,GetMagickModule(),
1188               MissingDelegateError,"NoEncodeDelegateForThisImageFormat","`%s'",
1189               image->filename);
1190           else
1191             {
1192               /*
1193                 Call appropriate image writer based on image type.
1194               */
1195               thread_support=GetMagickThreadSupport(magick_info);
1196               if ((thread_support & EncoderThreadSupport) == 0)
1197                 LockSemaphoreInfo(constitute_semaphore);
1198               status=GetImageEncoder(magick_info)(write_info,image,exception);
1199               if ((thread_support & EncoderThreadSupport) == 0)
1200                 UnlockSemaphoreInfo(constitute_semaphore);
1201             }
1202         }
1203     }
1204   if (GetBlobError(image) != MagickFalse)
1205     ThrowFileException(exception,FileOpenError,
1206       "AnErrorHasOccurredWritingToFile",image->filename);
1207   if (temporary == MagickTrue)
1208     {
1209       /*
1210         Copy temporary image file to permanent.
1211       */
1212       status=OpenBlob(write_info,image,ReadBinaryBlobMode,exception);
1213       if (status != MagickFalse)
1214         {
1215           (void) RelinquishUniqueFileResource(write_info->filename);
1216           status=ImageToFile(image,write_info->filename,exception);
1217         }
1218       (void) CloseBlob(image);
1219       (void) RelinquishUniqueFileResource(image->filename);
1220       (void) CopyMagickString(image->filename,write_info->filename,
1221         MaxTextExtent);
1222     }
1223   if ((LocaleCompare(write_info->magick,"info") != 0) &&
1224       (write_info->verbose != MagickFalse))
1225     (void) IdentifyImage(image,stdout,MagickFalse,exception);
1226   write_info=DestroyImageInfo(write_info);
1227   return(status);
1228 }
1229 \f
1230 /*
1231 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1232 %                                                                             %
1233 %                                                                             %
1234 %                                                                             %
1235 %   W r i t e I m a g e s                                                     %
1236 %                                                                             %
1237 %                                                                             %
1238 %                                                                             %
1239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1240 %
1241 %  WriteImages() writes an image sequence into one or more files.  While
1242 %  WriteImage() can write an image sequence, it is limited to writing
1243 %  the sequence into a single file using a format which supports multiple
1244 %  frames.   WriteImages(), however, does not have this limitation, instead it
1245 %  generates multiple output files if necessary (or when requested).  When
1246 %  ImageInfo's adjoin flag is set to MagickFalse, the file name is expected
1247 %  to include a printf-style formatting string for the frame number (e.g.
1248 %  "image%02d.png").
1249 %
1250 %  The format of the WriteImages method is:
1251 %
1252 %      MagickBooleanType WriteImages(const ImageInfo *image_info,Image *images,
1253 %        const char *filename,ExceptionInfo *exception)
1254 %
1255 %  A description of each parameter follows:
1256 %
1257 %    o image_info: the image info.
1258 %
1259 %    o images: the image list.
1260 %
1261 %    o filename: the image filename.
1262 %
1263 %    o exception: return any errors or warnings in this structure.
1264 %
1265 */
1266 MagickExport MagickBooleanType WriteImages(const ImageInfo *image_info,
1267   Image *images,const char *filename,ExceptionInfo *exception)
1268 {
1269 #define WriteImageTag  "Write/Image"
1270
1271   BlobInfo
1272     *blob;
1273
1274   ExceptionInfo
1275     *sans_exception;
1276
1277   ImageInfo
1278     *write_info;
1279
1280   MagickBooleanType
1281     proceed;
1282
1283   MagickOffsetType
1284     i;
1285
1286   MagickProgressMonitor
1287     progress_monitor;
1288
1289   MagickSizeType
1290     number_images;
1291
1292   MagickStatusType
1293     status;
1294
1295   register Image
1296     *p;
1297
1298   assert(image_info != (const ImageInfo *) NULL);
1299   assert(image_info->signature == MagickSignature);
1300   assert(images != (Image *) NULL);
1301   assert(images->signature == MagickSignature);
1302   if (images->debug != MagickFalse)
1303     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
1304   assert(exception != (ExceptionInfo *) NULL);
1305   write_info=CloneImageInfo(image_info);
1306   images=GetFirstImageInList(images);
1307   blob=CloneBlobInfo(images->blob);  /* thread specific I/O handler */
1308   DestroyBlob(images);
1309   images->blob=blob;
1310   if (filename != (const char *) NULL)
1311     for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1312       (void) CopyMagickString(p->filename,filename,MaxTextExtent);
1313   (void) CopyMagickString(write_info->filename,images->filename,MaxTextExtent);
1314   if (*write_info->magick == '\0')
1315     (void) CopyMagickString(write_info->magick,images->magick,MaxTextExtent);
1316   sans_exception=AcquireExceptionInfo();
1317   (void) SetImageInfo(write_info,(unsigned int) GetImageListLength(images),
1318     sans_exception);
1319   sans_exception=DestroyExceptionInfo(sans_exception);
1320   p=images;
1321   for ( ; GetNextImageInList(p) != (Image *) NULL; p=GetNextImageInList(p))
1322     if (p->scene >= GetNextImageInList(p)->scene)
1323       {
1324         register ssize_t
1325           i;
1326
1327         /*
1328           Generate consistent scene numbers.
1329         */
1330         i=(ssize_t) images->scene;
1331         for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1332           p->scene=(size_t) i++;
1333         break;
1334       }
1335   /*
1336     Write images.
1337   */
1338   status=MagickTrue;
1339   progress_monitor=(MagickProgressMonitor) NULL;
1340   i=0;
1341   number_images=GetImageListLength(images);
1342   for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1343   {
1344     if (number_images != 1)
1345       progress_monitor=SetImageProgressMonitor(p,(MagickProgressMonitor) NULL,
1346         p->client_data);
1347     status&=WriteImage(write_info,p,exception);
1348     if (number_images != 1)
1349       (void) SetImageProgressMonitor(p,progress_monitor,p->client_data);
1350     if (write_info->adjoin != MagickFalse)
1351       break;
1352     if (number_images != 1)
1353       {
1354         proceed=SetImageProgress(p,WriteImageTag,i++,number_images);
1355         if (proceed == MagickFalse)
1356           break;
1357       }
1358   }
1359   write_info=DestroyImageInfo(write_info);
1360   return(status != 0 ? MagickTrue : MagickFalse);
1361 }