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 %                                  Cristy                                     %
  17 %                               October 1998                                  %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2014 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/attribute.h"
  44 #include "MagickCore/blob.h"
  45 #include "MagickCore/blob-private.h"
  46 #include "MagickCore/exception.h"
  47 #include "MagickCore/exception-private.h"
  48 #include "MagickCore/cache.h"
  49 #include "MagickCore/client.h"
  50 #include "MagickCore/colorspace-private.h"
  51 #include "MagickCore/constitute.h"
  52 #include "MagickCore/constitute-private.h"
  53 #include "MagickCore/delegate.h"
  54 #include "MagickCore/geometry.h"
  55 #include "MagickCore/identify.h"
  56 #include "MagickCore/image-private.h"
  57 #include "MagickCore/list.h"
  58 #include "MagickCore/magick.h"
  59 #include "MagickCore/memory_.h"
  60 #include "MagickCore/monitor.h"
  61 #include "MagickCore/monitor-private.h"
  62 #include "MagickCore/option.h"
  63 #include "MagickCore/pixel.h"
  64 #include "MagickCore/pixel-accessor.h"
  65 #include "MagickCore/policy.h"
  66 #include "MagickCore/profile.h"
  67 #include "MagickCore/profile-private.h"
  68 #include "MagickCore/property.h"
  69 #include "MagickCore/quantum.h"
  70 #include "MagickCore/resize.h"
  71 #include "MagickCore/resource_.h"
  72 #include "MagickCore/semaphore.h"
  73 #include "MagickCore/statistic.h"
  74 #include "MagickCore/stream.h"
  75 #include "MagickCore/string_.h"
  76 #include "MagickCore/string-private.h"
  77 #include "MagickCore/timer.h"
  78 #include "MagickCore/token.h"
  79 #include "MagickCore/transform.h"
  80 #include "MagickCore/utility.h"
  81 #include "MagickCore/utility-private.h"
  82 \f
  83 static SemaphoreInfo
  84   *constitute_semaphore = (SemaphoreInfo *) NULL;
  85 \f
  86 /*
  87 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  88 %                                                                             %
  89 %                                                                             %
  90 %                                                                             %
  91 +   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                       %
  92 %                                                                             %
  93 %                                                                             %
  94 %                                                                             %
  95 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  96 %
  97 %  ConstituteComponentGenesis() instantiates the constitute component.
  98 %
  99 %  The format of the ConstituteComponentGenesis method is:
 100 %
 101 %      MagickBooleanType ConstituteComponentGenesis(void)
 102 %
 103 */
 104 MagickPrivate MagickBooleanType ConstituteComponentGenesis(void)
 105 {
 106   AcquireSemaphoreInfo(&constitute_semaphore);
 107   return(MagickTrue);
 108 }
 109 \f
 110 /*
 111 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 112 %                                                                             %
 113 %                                                                             %
 114 %                                                                             %
 115 +   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                     %
 116 %                                                                             %
 117 %                                                                             %
 118 %                                                                             %
 119 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 120 %
 121 %  ConstituteComponentTerminus() destroys the constitute component.
 122 %
 123 %  The format of the ConstituteComponentTerminus method is:
 124 %
 125 %      ConstituteComponentTerminus(void)
 126 %
 127 */
 128 MagickPrivate void ConstituteComponentTerminus(void)
 129 {
 130   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 131     AcquireSemaphoreInfo(&constitute_semaphore);
 132   DestroySemaphoreInfo(&constitute_semaphore);
 133 }
 134 \f
 135 /*
 136 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 137 %                                                                             %
 138 %                                                                             %
 139 %                                                                             %
 140 %   C o n s t i t u t e I m a g e                                             %
 141 %                                                                             %
 142 %                                                                             %
 143 %                                                                             %
 144 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 145 %
 146 %  ConstituteImage() returns an image from the pixel data you supply.
 147 %  The pixel data must be in scanline order top-to-bottom.  The data can be
 148 %  char, short int, int, float, or double.  Float and double require the
 149 %  pixels to be normalized [0..1], otherwise [0..QuantumRange].  For example, to
 150 %  create a 640x480 image from unsigned red-green-blue character data, use:
 151 %
 152 %      image = ConstituteImage(640,480,"RGB",CharPixel,pixels,&exception);
 153 %
 154 %  The format of the ConstituteImage method is:
 155 %
 156 %      Image *ConstituteImage(const size_t columns,const size_t rows,
 157 %        const char *map,const StorageType storage,const void *pixels,
 158 %        ExceptionInfo *exception)
 159 %
 160 %  A description of each parameter follows:
 161 %
 162 %    o columns: width in pixels of the image.
 163 %
 164 %    o rows: height in pixels of the image.
 165 %
 166 %    o map:  This string reflects the expected ordering of the pixel array.
 167 %      It can be any combination or order of R = red, G = green, B = blue,
 168 %      A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan,
 169 %      Y = yellow, M = magenta, K = black, I = intensity (for grayscale),
 170 %      P = pad.
 171 %
 172 %    o storage: Define the data type of the pixels.  Float and double types are
 173 %      expected to be normalized [0..1] otherwise [0..QuantumRange].  Choose
 174 %      from these types: CharPixel, DoublePixel, FloatPixel, IntegerPixel,
 175 %      LongPixel, QuantumPixel, or ShortPixel.
 176 %
 177 %    o pixels: This array of values contain the pixel components as defined by
 178 %      map and type.  You must preallocate this array where the expected
 179 %      length varies depending on the values of width, height, map, and type.
 180 %
 181 %    o exception: return any errors or warnings in this structure.
 182 %
 183 */
 184 MagickExport Image *ConstituteImage(const size_t columns,const size_t rows,
 185   const char *map,const StorageType storage,const void *pixels,
 186   ExceptionInfo *exception)
 187 {
 188   Image
 189     *image;
 190
 191   MagickBooleanType
 192     status;
 193
 194   /*
 195     Allocate image structure.
 196   */
 197   assert(map != (const char *) NULL);
 198   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",map);
 199   assert(pixels != (void *) NULL);
 200   assert(exception != (ExceptionInfo *) NULL);
 201   assert(exception->signature == MagickSignature);
 202   image=AcquireImage((ImageInfo *) NULL,exception);
 203   if (image == (Image *) NULL)
 204     return((Image *) NULL);
 205   if ((columns == 0) || (rows == 0))
 206     ThrowImageException(OptionError,"NonZeroWidthAndHeightRequired");
 207   image->columns=columns;
 208   image->rows=rows;
 209   (void) SetImageBackgroundColor(image,exception);
 210   status=ImportImagePixels(image,0,0,columns,rows,map,storage,pixels,exception);
 211   if (status == MagickFalse)
 212      image=DestroyImage(image);
 213   return(image);
 214 }
 215 \f
 216 /*
 217 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 218 %                                                                             %
 219 %                                                                             %
 220 %                                                                             %
 221 %   P i n g I m a g e                                                         %
 222 %                                                                             %
 223 %                                                                             %
 224 %                                                                             %
 225 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 226 %
 227 %  PingImage() returns all the properties of an image or image sequence
 228 %  except for the pixels.  It is much faster and consumes far less memory
 229 %  than ReadImage().  On failure, a NULL image is returned and exception
 230 %  describes the reason for the failure.
 231 %
 232 %  The format of the PingImage method is:
 233 %
 234 %      Image *PingImage(const ImageInfo *image_info,ExceptionInfo *exception)
 235 %
 236 %  A description of each parameter follows:
 237 %
 238 %    o image_info: Ping the image defined by the file or filename members of
 239 %      this structure.
 240 %
 241 %    o exception: return any errors or warnings in this structure.
 242 %
 243 */
 244
 245 #if defined(__cplusplus) || defined(c_plusplus)
 246 extern "C" {
 247 #endif
 248
 249 static size_t PingStream(const Image *magick_unused(image),
 250   const void *magick_unused(pixels),const size_t columns)
 251 {
 252   return(columns);
 253 }
 254
 255 #if defined(__cplusplus) || defined(c_plusplus)
 256 }
 257 #endif
 258
 259 MagickExport Image *PingImage(const ImageInfo *image_info,
 260   ExceptionInfo *exception)
 261 {
 262   Image
 263     *image;
 264
 265   ImageInfo
 266     *ping_info;
 267
 268   assert(image_info != (ImageInfo *) NULL);
 269   assert(image_info->signature == MagickSignature);
 270   if (image_info->debug != MagickFalse)
 271     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 272       image_info->filename);
 273   assert(exception != (ExceptionInfo *) NULL);
 274   ping_info=CloneImageInfo(image_info);
 275   ping_info->ping=MagickTrue;
 276   image=ReadStream(ping_info,&PingStream,exception);
 277   if (image != (Image *) NULL)
 278     {
 279       ResetTimer(&image->timer);
 280       if (ping_info->verbose != MagickFalse)
 281         (void) IdentifyImage(image,stdout,MagickFalse,exception);
 282     }
 283   ping_info=DestroyImageInfo(ping_info);
 284   return(image);
 285 }
 286 \f
 287 /*
 288 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 289 %                                                                             %
 290 %                                                                             %
 291 %                                                                             %
 292 %   P i n g I m a g e s                                                       %
 293 %                                                                             %
 294 %                                                                             %
 295 %                                                                             %
 296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 297 %
 298 %  PingImages() pings one or more images and returns them as an image list.
 299 %
 300 %  The format of the PingImage method is:
 301 %
 302 %      Image *PingImages(ImageInfo *image_info,const char *filename,
 303 %        ExceptionInfo *exception)
 304 %
 305 %  A description of each parameter follows:
 306 %
 307 %    o image_info: the image info.
 308 %
 309 %    o filename: the image filename.
 310 %
 311 %    o exception: return any errors or warnings in this structure.
 312 %
 313 */
 314 MagickExport Image *PingImages(ImageInfo *image_info,const char *filename,
 315   ExceptionInfo *exception)
 316 {
 317   char
 318     ping_filename[MaxTextExtent];
 319
 320   Image
 321     *image,
 322     *images;
 323
 324   ImageInfo
 325     *read_info;
 326
 327   /*
 328     Ping image list from a file.
 329   */
 330   assert(image_info != (ImageInfo *) NULL);
 331   assert(image_info->signature == MagickSignature);
 332   if (image_info->debug != MagickFalse)
 333     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 334       image_info->filename);
 335   assert(exception != (ExceptionInfo *) NULL);
 336   (void) SetImageOption(image_info,"filename",filename);
 337   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 338   (void) InterpretImageFilename(image_info,(Image *) NULL,image_info->filename,
 339     (int) image_info->scene,ping_filename,exception);
 340   if (LocaleCompare(ping_filename,image_info->filename) != 0)
 341     {
 342       ExceptionInfo
 343         *sans;
 344
 345       ssize_t
 346         extent,
 347         scene;
 348
 349       /*
 350         Images of the form image-%d.png[1-5].
 351       */
 352       read_info=CloneImageInfo(image_info);
 353       sans=AcquireExceptionInfo();
 354       (void) SetImageInfo(read_info,0,sans);
 355       sans=DestroyExceptionInfo(sans);
 356       if (read_info->number_scenes == 0)
 357         {
 358           read_info=DestroyImageInfo(read_info);
 359           return(PingImage(image_info,exception));
 360         }
 361       (void) CopyMagickString(ping_filename,read_info->filename,MaxTextExtent);
 362       images=NewImageList();
 363       extent=(ssize_t) (read_info->scene+read_info->number_scenes);
 364       for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
 365       {
 366         (void) InterpretImageFilename(image_info,(Image *) NULL,ping_filename,
 367           (int) scene,read_info->filename,exception);
 368         image=PingImage(read_info,exception);
 369         if (image == (Image *) NULL)
 370           continue;
 371         AppendImageToList(&images,image);
 372       }
 373       read_info=DestroyImageInfo(read_info);
 374       return(images);
 375     }
 376   return(PingImage(image_info,exception));
 377 }
 378 \f
 379 /*
 380 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 381 %                                                                             %
 382 %                                                                             %
 383 %                                                                             %
 384 %   R e a d I m a g e                                                         %
 385 %                                                                             %
 386 %                                                                             %
 387 %                                                                             %
 388 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 389 %
 390 %  ReadImage() reads an image or image sequence from a file or file handle.
 391 %  The method returns a NULL if there is a memory shortage or if the image
 392 %  cannot be read.  On failure, a NULL image is returned and exception
 393 %  describes the reason for the failure.
 394 %
 395 %  The format of the ReadImage method is:
 396 %
 397 %      Image *ReadImage(const ImageInfo *image_info,ExceptionInfo *exception)
 398 %
 399 %  A description of each parameter follows:
 400 %
 401 %    o image_info: Read the image defined by the file or filename members of
 402 %      this structure.
 403 %
 404 %    o exception: return any errors or warnings in this structure.
 405 %
 406 */
 407 MagickExport Image *ReadImage(const ImageInfo *image_info,
 408   ExceptionInfo *exception)
 409 {
 410   char
 411     filename[MaxTextExtent],
 412     magick[MaxTextExtent],
 413     magick_filename[MaxTextExtent];
 414
 415   const char
 416     *value;
 417
 418   const DelegateInfo
 419     *delegate_info;
 420
 421   const MagickInfo
 422     *magick_info;
 423
 424   ExceptionInfo
 425     *sans_exception;
 426
 427   GeometryInfo
 428     geometry_info;
 429
 430   Image
 431     *image,
 432     *next;
 433
 434   ImageInfo
 435     *read_info;
 436
 437   MagickStatusType
 438     flags,
 439     thread_support;
 440
 441   PolicyDomain
 442     domain;
 443
 444   PolicyRights
 445     rights;
 446
 447   /*
 448     Determine image type from filename prefix or suffix (e.g. image.jpg).
 449   */
 450   assert(image_info != (ImageInfo *) NULL);
 451   assert(image_info->signature == MagickSignature);
 452   assert(image_info->filename != (char *) NULL);
 453   if (image_info->debug != MagickFalse)
 454     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 455       image_info->filename);
 456   assert(exception != (ExceptionInfo *) NULL);
 457   read_info=CloneImageInfo(image_info);
 458   (void) CopyMagickString(magick_filename,read_info->filename,MaxTextExtent);
 459   (void) SetImageInfo(read_info,0,exception);
 460   (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
 461   (void) CopyMagickString(magick,read_info->magick,MaxTextExtent);
 462   domain=CoderPolicyDomain;
 463   rights=ReadPolicyRights;
 464   if (IsRightsAuthorized(domain,rights,read_info->magick) == MagickFalse)
 465     {
 466       errno=EPERM;
 467       (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
 468         "NotAuthorized","`%s'",read_info->filename);
 469       read_info=DestroyImageInfo(read_info);
 470       return((Image *) NULL);
 471     }
 472   /*
 473     Call appropriate image reader based on image type.
 474   */
 475   sans_exception=AcquireExceptionInfo();
 476   magick_info=GetMagickInfo(read_info->magick,sans_exception);
 477   sans_exception=DestroyExceptionInfo(sans_exception);
 478   if (magick_info != (const MagickInfo *) NULL)
 479     {
 480       if (GetMagickEndianSupport(magick_info) == MagickFalse)
 481         read_info->endian=UndefinedEndian;
 482       else
 483         if ((image_info->endian == UndefinedEndian) &&
 484             (GetMagickRawSupport(magick_info) != MagickFalse))
 485           {
 486             size_t
 487               lsb_first;
 488
 489             lsb_first=1;
 490             read_info->endian=(*(char *) &lsb_first) == 1 ? LSBEndian :
 491               MSBEndian;
 492          }
 493     }
 494   if ((magick_info != (const MagickInfo *) NULL) &&
 495       (GetMagickSeekableStream(magick_info) != MagickFalse))
 496     {
 497       MagickBooleanType
 498         status;
 499
 500       image=AcquireImage(read_info,exception);
 501       (void) CopyMagickString(image->filename,read_info->filename,
 502         MaxTextExtent);
 503       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 504       if (status == MagickFalse)
 505         {
 506           read_info=DestroyImageInfo(read_info);
 507           image=DestroyImage(image);
 508           return((Image *) NULL);
 509         }
 510       if (IsBlobSeekable(image) == MagickFalse)
 511         {
 512           /*
 513             Coder requires a seekable stream.
 514           */
 515           *read_info->filename='\0';
 516           status=ImageToFile(image,read_info->filename,exception);
 517           if (status == MagickFalse)
 518             {
 519               (void) CloseBlob(image);
 520               read_info=DestroyImageInfo(read_info);
 521               image=DestroyImage(image);
 522               return((Image *) NULL);
 523             }
 524           read_info->temporary=MagickTrue;
 525         }
 526       (void) CloseBlob(image);
 527       image=DestroyImage(image);
 528     }
 529   image=NewImageList();
 530   if (constitute_semaphore == (SemaphoreInfo *) NULL)
 531     AcquireSemaphoreInfo(&constitute_semaphore);
 532   if ((magick_info == (const MagickInfo *) NULL) ||
 533       (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
 534     {
 535       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 536       if (delegate_info == (const DelegateInfo *) NULL)
 537         {
 538           (void) SetImageInfo(read_info,0,exception);
 539           (void) CopyMagickString(read_info->filename,filename,MaxTextExtent);
 540           magick_info=GetMagickInfo(read_info->magick,exception);
 541         }
 542     }
 543   if ((magick_info != (const MagickInfo *) NULL) &&
 544       (GetImageDecoder(magick_info) != (DecodeImageHandler *) NULL))
 545     {
 546       thread_support=GetMagickThreadSupport(magick_info);
 547       if ((thread_support & DecoderThreadSupport) == 0)
 548         LockSemaphoreInfo(constitute_semaphore);
 549       image=GetImageDecoder(magick_info)(read_info,exception);
 550       if ((thread_support & DecoderThreadSupport) == 0)
 551         UnlockSemaphoreInfo(constitute_semaphore);
 552     }
 553   else
 554     {
 555       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 556       if (delegate_info == (const DelegateInfo *) NULL)
 557         {
 558           (void) ThrowMagickException(exception,GetMagickModule(),
 559             MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 560             read_info->filename);
 561           if (read_info->temporary != MagickFalse)
 562             (void) RelinquishUniqueFileResource(read_info->filename);
 563           read_info=DestroyImageInfo(read_info);
 564           return((Image *) NULL);
 565         }
 566       /*
 567         Let our decoding delegate process the image.
 568       */
 569       image=AcquireImage(read_info,exception);
 570       if (image == (Image *) NULL)
 571         {
 572           read_info=DestroyImageInfo(read_info);
 573           return((Image *) NULL);
 574         }
 575       (void) CopyMagickString(image->filename,read_info->filename,
 576         MaxTextExtent);
 577       *read_info->filename='\0';
 578       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 579         LockSemaphoreInfo(constitute_semaphore);
 580       (void) InvokeDelegate(read_info,image,read_info->magick,(char *) NULL,
 581         exception);
 582       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 583         UnlockSemaphoreInfo(constitute_semaphore);
 584       image=DestroyImageList(image);
 585       read_info->temporary=MagickTrue;
 586       (void) SetImageInfo(read_info,0,exception);
 587       magick_info=GetMagickInfo(read_info->magick,exception);
 588       if ((magick_info == (const MagickInfo *) NULL) ||
 589           (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
 590         {
 591           if (IsPathAccessible(read_info->filename) != MagickFalse)
 592             (void) ThrowMagickException(exception,GetMagickModule(),
 593               MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
 594               read_info->filename);
 595           else
 596             ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 597               read_info->filename);
 598           read_info=DestroyImageInfo(read_info);
 599           return((Image *) NULL);
 600         }
 601       thread_support=GetMagickThreadSupport(magick_info);
 602       if ((thread_support & DecoderThreadSupport) == 0)
 603         LockSemaphoreInfo(constitute_semaphore);
 604       image=(Image *) (GetImageDecoder(magick_info))(read_info,exception);
 605       if ((thread_support & DecoderThreadSupport) == 0)
 606         UnlockSemaphoreInfo(constitute_semaphore);
 607     }
 608   if (read_info->temporary != MagickFalse)
 609     {
 610       (void) RelinquishUniqueFileResource(read_info->filename);
 611       read_info->temporary=MagickFalse;
 612       if (image != (Image *) NULL)
 613         (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 614     }
 615   if (image == (Image *) NULL)
 616     {
 617       read_info=DestroyImageInfo(read_info);
 618       return(image);
 619     }
 620   if (exception->severity >= ErrorException)
 621     (void) LogMagickEvent(ExceptionEvent,GetMagickModule(),
 622       "Coder (%s) generated an image despite an error (%d), "
 623       "notify the developers",image->magick,exception->severity);
 624   if (IsBlobTemporary(image) != MagickFalse)
 625     (void) RelinquishUniqueFileResource(read_info->filename);
 626   if ((GetNextImageInList(image) != (Image *) NULL) &&
 627       (IsSceneGeometry(read_info->scenes,MagickFalse) != MagickFalse))
 628     {
 629       Image
 630         *clones;
 631
 632       clones=CloneImages(image,read_info->scenes,exception);
 633       if (clones == (Image *) NULL)
 634         (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 635           "SubimageSpecificationReturnsNoImages","`%s'",read_info->filename);
 636       else
 637         {
 638           image=DestroyImageList(image);
 639           image=GetFirstImageInList(clones);
 640         }
 641     }
 642   if (GetBlobError(image) != MagickFalse)
 643     ThrowFileException(exception,FileOpenError,
 644       "AnErrorHasOccurredReadingFromFile",read_info->filename);
 645   for (next=image; next != (Image *) NULL; next=GetNextImageInList(next))
 646   {
 647     char
 648       magick_path[MaxTextExtent],
 649       *property,
 650       timestamp[MaxTextExtent];
 651
 652     const char
 653       *option;
 654
 655     const StringInfo
 656       *profile;
 657
 658     next->taint=MagickFalse;
 659     GetPathComponent(magick_filename,MagickPath,magick_path);
 660     if (*magick_path == '\0')
 661       (void) CopyMagickString(next->magick,magick,MaxTextExtent);
 662     (void) CopyMagickString(next->magick_filename,magick_filename,
 663       MaxTextExtent);
 664     if (IsBlobTemporary(image) != MagickFalse)
 665       (void) CopyMagickString(next->filename,filename,MaxTextExtent);
 666     if (next->magick_columns == 0)
 667       next->magick_columns=next->columns;
 668     if (next->magick_rows == 0)
 669       next->magick_rows=next->rows;
 670     value=GetImageProperty(next,"tiff:Orientation",exception);
 671     if (value == (char *) NULL)
 672       value=GetImageProperty(next,"exif:Orientation",exception);
 673     if (value != (char *) NULL)
 674       {
 675         next->orientation=(OrientationType) StringToLong(value);
 676         (void) DeleteImageProperty(next,"tiff:Orientation");
 677         (void) DeleteImageProperty(next,"exif:Orientation");
 678       }
 679     value=GetImageProperty(next,"exif:XResolution",exception);
 680     if (value != (char *) NULL)
 681       {
 682         geometry_info.rho=next->resolution.x;
 683         geometry_info.sigma=1.0;
 684         flags=ParseGeometry(value,&geometry_info);
 685         if (geometry_info.sigma != 0)
 686           next->resolution.x=geometry_info.rho/geometry_info.sigma;
 687         (void) DeleteImageProperty(next,"exif:XResolution");
 688       }
 689     value=GetImageProperty(next,"exif:YResolution",exception);
 690     if (value != (char *) NULL)
 691       {
 692         geometry_info.rho=next->resolution.y;
 693         geometry_info.sigma=1.0;
 694         flags=ParseGeometry(value,&geometry_info);
 695         if (geometry_info.sigma != 0)
 696           next->resolution.y=geometry_info.rho/geometry_info.sigma;
 697         (void) DeleteImageProperty(next,"exif:YResolution");
 698       }
 699     value=GetImageProperty(next,"tiff:ResolutionUnit",exception);
 700     if (value == (char *) NULL)
 701       value=GetImageProperty(next,"exif:ResolutionUnit",exception);
 702     if (value != (char *) NULL)
 703       {
 704         next->units=(ResolutionType) (StringToLong(value)-1);
 705         (void) DeleteImageProperty(next,"exif:ResolutionUnit");
 706         (void) DeleteImageProperty(next,"tiff:ResolutionUnit");
 707       }
 708     if (next->page.width == 0)
 709       next->page.width=next->columns;
 710     if (next->page.height == 0)
 711       next->page.height=next->rows;
 712     option=GetImageOption(read_info,"caption");
 713     if (option != (const char *) NULL)
 714       {
 715         property=InterpretImageProperties(read_info,next,option,exception);
 716         (void) SetImageProperty(next,"caption",property,exception);
 717         property=DestroyString(property);
 718       }
 719     option=GetImageOption(read_info,"comment");
 720     if (option != (const char *) NULL)
 721       {
 722         property=InterpretImageProperties(read_info,next,option,exception);
 723         (void) SetImageProperty(next,"comment",property,exception);
 724         property=DestroyString(property);
 725       }
 726     option=GetImageOption(read_info,"label");
 727     if (option != (const char *) NULL)
 728       {
 729         property=InterpretImageProperties(read_info,next,option,exception);
 730         (void) SetImageProperty(next,"label",property,exception);
 731         property=DestroyString(property);
 732       }
 733     if (LocaleCompare(next->magick,"TEXT") == 0)
 734       (void) ParseAbsoluteGeometry("0x0+0+0",&next->page);
 735     if ((read_info->extract != (char *) NULL) &&
 736         (read_info->stream == (StreamHandler) NULL))
 737       {
 738         RectangleInfo
 739           geometry;
 740
 741         flags=ParseAbsoluteGeometry(read_info->extract,&geometry);
 742         if ((next->columns != geometry.width) ||
 743             (next->rows != geometry.height))
 744           {
 745             if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 746               {
 747                 Image
 748                   *crop_image;
 749
 750                 crop_image=CropImage(next,&geometry,exception);
 751                 if (crop_image != (Image *) NULL)
 752                   ReplaceImageInList(&next,crop_image);
 753               }
 754             else
 755               if (((flags & WidthValue) != 0) || ((flags & HeightValue) != 0))
 756                 {
 757                   Image
 758                     *size_image;
 759
 760                   flags=ParseRegionGeometry(next,read_info->extract,&geometry,
 761                     exception);
 762                   size_image=ResizeImage(next,geometry.width,geometry.height,
 763                     next->filter,exception);
 764                   if (size_image != (Image *) NULL)
 765                     ReplaceImageInList(&next,size_image);
 766                 }
 767           }
 768       }
 769     profile=GetImageProfile(next,"icc");
 770     if (profile == (const StringInfo *) NULL)
 771       profile=GetImageProfile(next,"icm");
 772     profile=GetImageProfile(next,"iptc");
 773     if (profile == (const StringInfo *) NULL)
 774       profile=GetImageProfile(next,"8bim");
 775     (void) FormatMagickTime(GetBlobProperties(next)->st_mtime,MaxTextExtent,
 776       timestamp);
 777     (void) SetImageProperty(next,"date:modify",timestamp,exception);
 778     (void) FormatMagickTime(GetBlobProperties(next)->st_ctime,MaxTextExtent,
 779       timestamp);
 780     (void) SetImageProperty(next,"date:create",timestamp,exception);
 781     option=GetImageOption(image_info,"delay");
 782     if (option != (const char *) NULL)
 783       {
 784         GeometryInfo
 785           geometry_info;
 786
 787         flags=ParseGeometry(option,&geometry_info);
 788         if ((flags & GreaterValue) != 0)
 789           {
 790             if (next->delay > (size_t) floor(geometry_info.rho+0.5))
 791               next->delay=(size_t) floor(geometry_info.rho+0.5);
 792           }
 793         else
 794           if ((flags & LessValue) != 0)
 795             {
 796               if (next->delay < (size_t) floor(geometry_info.rho+0.5))
 797                 next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 798             }
 799           else
 800             next->delay=(size_t) floor(geometry_info.rho+0.5);
 801         if ((flags & SigmaValue) != 0)
 802           next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 803       }
 804     option=GetImageOption(image_info,"dispose");
 805     if (option != (const char *) NULL)
 806       next->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
 807         MagickFalse,option);
 808     if (read_info->verbose != MagickFalse)
 809       (void) IdentifyImage(next,stderr,MagickFalse,exception);
 810     image=next;
 811   }
 812   read_info=DestroyImageInfo(read_info);
 813   return(GetFirstImageInList(image));
 814 }
 815 \f
 816 /*
 817 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 818 %                                                                             %
 819 %                                                                             %
 820 %                                                                             %
 821 %   R e a d I m a g e s                                                       %
 822 %                                                                             %
 823 %                                                                             %
 824 %                                                                             %
 825 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 826 %
 827 %  ReadImages() reads one or more images and returns them as an image list.
 828 %
 829 %  The format of the ReadImage method is:
 830 %
 831 %      Image *ReadImages(ImageInfo *image_info,const char *filename,
 832 %        ExceptionInfo *exception)
 833 %
 834 %  A description of each parameter follows:
 835 %
 836 %    o image_info: the image info.
 837 %
 838 %    o filename: the image filename.
 839 %
 840 %    o exception: return any errors or warnings in this structure.
 841 %
 842 */
 843 MagickExport Image *ReadImages(ImageInfo *image_info,const char *filename,
 844   ExceptionInfo *exception)
 845 {
 846   char
 847     read_filename[MaxTextExtent];
 848
 849   Image
 850     *image,
 851     *images;
 852
 853   ImageInfo
 854     *read_info;
 855
 856   /*
 857     Read image list from a file.
 858   */
 859   assert(image_info != (ImageInfo *) NULL);
 860   assert(image_info->signature == MagickSignature);
 861   if (image_info->debug != MagickFalse)
 862     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 863       image_info->filename);
 864   assert(exception != (ExceptionInfo *) NULL);
 865   (void) SetImageOption(image_info,"filename",filename);
 866   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 867   (void) InterpretImageFilename(image_info,(Image *) NULL,filename,
 868     (int) image_info->scene,read_filename,exception);
 869   if (LocaleCompare(read_filename,image_info->filename) != 0)
 870     {
 871       ExceptionInfo
 872         *sans;
 873
 874       ssize_t
 875         extent,
 876         scene;
 877
 878       /*
 879         Images of the form image-%d.png[1-5].
 880       */
 881       read_info=CloneImageInfo(image_info);
 882       sans=AcquireExceptionInfo();
 883       (void) SetImageInfo(read_info,0,sans);
 884       sans=DestroyExceptionInfo(sans);
 885       if (read_info->number_scenes == 0)
 886         {
 887           read_info=DestroyImageInfo(read_info);
 888           return(ReadImage(image_info,exception));
 889         }
 890       (void) CopyMagickString(read_filename,read_info->filename,MaxTextExtent);
 891       images=NewImageList();
 892       extent=(ssize_t) (read_info->scene+read_info->number_scenes);
 893       for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
 894       {
 895         (void) InterpretImageFilename(image_info,(Image *) NULL,read_filename,
 896           (int) scene,read_info->filename,exception);
 897         image=ReadImage(read_info,exception);
 898         if (image == (Image *) NULL)
 899           continue;
 900         AppendImageToList(&images,image);
 901       }
 902       read_info=DestroyImageInfo(read_info);
 903       return(images);
 904     }
 905   return(ReadImage(image_info,exception));
 906 }
 907 \f
 908 /*
 909 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 910 %                                                                             %
 911 %                                                                             %
 912 %                                                                             %
 913 +   R e a d I n l i n e I m a g e                                             %
 914 %                                                                             %
 915 %                                                                             %
 916 %                                                                             %
 917 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 918 %
 919 %  ReadInlineImage() reads a Base64-encoded inline image or image sequence.
 920 %  The method returns a NULL if there is a memory shortage or if the image
 921 %  cannot be read.  On failure, a NULL image is returned and exception
 922 %  describes the reason for the failure.
 923 %
 924 %  The format of the ReadInlineImage method is:
 925 %
 926 %      Image *ReadInlineImage(const ImageInfo *image_info,const char *content,
 927 %        ExceptionInfo *exception)
 928 %
 929 %  A description of each parameter follows:
 930 %
 931 %    o image_info: the image info.
 932 %
 933 %    o content: the image encoded in Base64.
 934 %
 935 %    o exception: return any errors or warnings in this structure.
 936 %
 937 */
 938 MagickExport Image *ReadInlineImage(const ImageInfo *image_info,
 939   const char *content,ExceptionInfo *exception)
 940 {
 941   Image
 942     *image;
 943
 944   ImageInfo
 945     *read_info;
 946
 947   unsigned char
 948     *blob;
 949
 950   size_t
 951     length;
 952
 953   register const char
 954     *p;
 955
 956   /*
 957     Skip over header (e.g. data:image/gif;base64,).
 958   */
 959   image=NewImageList();
 960   for (p=content; (*p != ',') && (*p != '\0'); p++) ;
 961   if (*p == '\0')
 962     ThrowReaderException(CorruptImageError,"CorruptImage");
 963   p++;
 964   length=0;
 965   blob=Base64Decode(p,&length);
 966   if (length == 0)
 967     ThrowReaderException(CorruptImageError,"CorruptImage");
 968   read_info=CloneImageInfo(image_info);
 969   (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
 970     (void *) NULL);
 971   *read_info->filename='\0';
 972   *read_info->magick='\0';
 973   image=BlobToImage(read_info,blob,length,exception);
 974   blob=(unsigned char *) RelinquishMagickMemory(blob);
 975   read_info=DestroyImageInfo(read_info);
 976   return(image);
 977 }
 978 \f
 979 /*
 980 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 981 %                                                                             %
 982 %                                                                             %
 983 %                                                                             %
 984 %   W r i t e I m a g e                                                       %
 985 %                                                                             %
 986 %                                                                             %
 987 %                                                                             %
 988 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 989 %
 990 %  WriteImage() writes an image or an image sequence to a file or file handle.
 991 %  If writing to a file is on disk, the name is defined by the filename member
 992 %  of the image structure.  WriteImage() returns MagickFalse is there is a
 993 %  memory shortage or if the image cannot be written.  Check the exception
 994 %  member of image to determine the cause for any failure.
 995 %
 996 %  The format of the WriteImage method is:
 997 %
 998 %      MagickBooleanType WriteImage(const ImageInfo *image_info,Image *image,
 999 %        ExceptionInfo *exception)
1000 %
1001 %  A description of each parameter follows:
1002 %
1003 %    o image_info: the image info.
1004 %
1005 %    o image: the image.
1006 %
1007 %    o exception: return any errors or warnings in this structure.
1008 %
1009 */
1010 MagickExport MagickBooleanType WriteImage(const ImageInfo *image_info,
1011   Image *image,ExceptionInfo *exception)
1012 {
1013   char
1014     filename[MaxTextExtent];
1015
1016   const char
1017     *option;
1018
1019   const DelegateInfo
1020     *delegate_info;
1021
1022   const MagickInfo
1023     *magick_info;
1024
1025   ExceptionInfo
1026     *sans_exception;
1027
1028   ImageInfo
1029     *write_info;
1030
1031   MagickBooleanType
1032     status,
1033     temporary;
1034
1035   MagickStatusType
1036     thread_support;
1037
1038   PolicyDomain
1039     domain;
1040
1041   PolicyRights
1042     rights;
1043
1044   /*
1045     Determine image type from filename prefix or suffix (e.g. image.jpg).
1046   */
1047   assert(image_info != (ImageInfo *) NULL);
1048   assert(image_info->signature == MagickSignature);
1049   if (image->debug != MagickFalse)
1050     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1051       image_info->filename);
1052   assert(image != (Image *) NULL);
1053   assert(image->signature == MagickSignature);
1054   assert(exception != (ExceptionInfo *) NULL);
1055   sans_exception=AcquireExceptionInfo();
1056   write_info=CloneImageInfo(image_info);
1057   (void) CopyMagickString(write_info->filename,image->filename,MaxTextExtent);
1058   if (*write_info->magick == '\0')
1059     (void) CopyMagickString(write_info->magick,image->magick,MaxTextExtent);
1060   (void) SetImageInfo(write_info,1,sans_exception);
1061   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1062   (void) CopyMagickString(image->filename,write_info->filename,MaxTextExtent);
1063   domain=CoderPolicyDomain;
1064   rights=WritePolicyRights;
1065   if (IsRightsAuthorized(domain,rights,write_info->magick) == MagickFalse)
1066     {
1067       sans_exception=DestroyExceptionInfo(sans_exception);
1068       write_info=DestroyImageInfo(write_info);
1069       errno=EPERM;
1070       ThrowBinaryException(PolicyError,"NotAuthorized",filename);
1071     }
1072   /*
1073     Call appropriate image reader based on image type.
1074   */
1075   magick_info=GetMagickInfo(write_info->magick,sans_exception);
1076   sans_exception=DestroyExceptionInfo(sans_exception);
1077   if (magick_info != (const MagickInfo *) NULL)
1078     {
1079       if (GetMagickEndianSupport(magick_info) == MagickFalse)
1080         image->endian=UndefinedEndian;
1081       else
1082         if ((image_info->endian == UndefinedEndian) &&
1083             (GetMagickRawSupport(magick_info) != MagickFalse))
1084           {
1085             size_t
1086               lsb_first;
1087
1088             lsb_first=1;
1089             image->endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
1090          }
1091     }
1092   (void) SyncImageProfiles(image);
1093   option=GetImageOption(image_info,"delegate:bimodal");
1094   if ((IfMagickTrue(IsStringTrue(option))) &&
1095       (write_info->page == (char *) NULL) &&
1096       (GetPreviousImageInList(image) == (Image *) NULL) &&
1097       (GetNextImageInList(image) == (Image *) NULL) &&
1098       (IfMagickFalse(IsTaintImage(image))) )
1099     {
1100       delegate_info=GetDelegateInfo(image->magick,write_info->magick,exception);
1101       if ((delegate_info != (const DelegateInfo *) NULL) &&
1102           (GetDelegateMode(delegate_info) == 0) &&
1103           (IsPathAccessible(image->magick_filename) != MagickFalse))
1104         {
1105           /*
1106             Process image with bi-modal delegate.
1107           */
1108           (void) CopyMagickString(image->filename,image->magick_filename,
1109             MaxTextExtent);
1110           status=InvokeDelegate(write_info,image,image->magick,
1111             write_info->magick,exception);
1112           write_info=DestroyImageInfo(write_info);
1113           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1114           return(status);
1115         }
1116     }
1117   status=MagickFalse;
1118   temporary=MagickFalse;
1119   if ((magick_info != (const MagickInfo *) NULL) &&
1120       (GetMagickSeekableStream(magick_info) != MagickFalse))
1121     {
1122       char
1123         filename[MaxTextExtent];
1124
1125       (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1126       status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
1127       (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1128       if (status != MagickFalse)
1129         {
1130           if (IsBlobSeekable(image) == MagickFalse)
1131             {
1132               /*
1133                 A seekable stream is required by the encoder.
1134               */
1135               write_info->adjoin=MagickTrue;
1136               (void) CopyMagickString(write_info->filename,image->filename,
1137                 MaxTextExtent);
1138               (void) AcquireUniqueFilename(image->filename);
1139               temporary=MagickTrue;
1140             }
1141           (void) CloseBlob(image);
1142         }
1143     }
1144   if (constitute_semaphore == (SemaphoreInfo *) NULL)
1145     AcquireSemaphoreInfo(&constitute_semaphore);
1146   if ((magick_info != (const MagickInfo *) NULL) &&
1147       (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1148     {
1149       /*
1150         Call appropriate image writer based on image type.
1151       */
1152       thread_support=GetMagickThreadSupport(magick_info);
1153       if ((thread_support & EncoderThreadSupport) == 0)
1154         LockSemaphoreInfo(constitute_semaphore);
1155       status=GetImageEncoder(magick_info)(write_info,image,exception);
1156       if ((thread_support & EncoderThreadSupport) == 0)
1157         UnlockSemaphoreInfo(constitute_semaphore);
1158     }
1159   else
1160     {
1161       delegate_info=GetDelegateInfo((char *) NULL,write_info->magick,exception);
1162       if (delegate_info != (DelegateInfo *) NULL)
1163         {
1164           /*
1165             Process the image with delegate.
1166           */
1167           *write_info->filename='\0';
1168           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1169             LockSemaphoreInfo(constitute_semaphore);
1170           status=InvokeDelegate(write_info,image,(char *) NULL,
1171             write_info->magick,exception);
1172           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1173             UnlockSemaphoreInfo(constitute_semaphore);
1174           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1175         }
1176       else
1177         {
1178           sans_exception=AcquireExceptionInfo();
1179           magick_info=GetMagickInfo(write_info->magick,sans_exception);
1180           sans_exception=DestroyExceptionInfo(sans_exception);
1181           if ((write_info->affirm == MagickFalse) &&
1182               (magick_info == (const MagickInfo *) NULL))
1183             {
1184               (void) CopyMagickString(write_info->magick,image->magick,
1185                 MaxTextExtent);
1186               magick_info=GetMagickInfo(write_info->magick,exception);
1187             }
1188           if ((magick_info == (const MagickInfo *) NULL) ||
1189               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1190             {
1191               char
1192                 extension[MaxTextExtent];
1193
1194               GetPathComponent(image->filename,ExtensionPath,extension);
1195               if (*extension != '\0')
1196                 magick_info=GetMagickInfo(extension,exception);
1197               else
1198                 magick_info=GetMagickInfo(image->magick,exception);
1199               (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1200             }
1201           if ((magick_info == (const MagickInfo *) NULL) ||
1202               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1203             {
1204               magick_info=GetMagickInfo(image->magick,exception);
1205               if ((magick_info == (const MagickInfo *) NULL) ||
1206                   (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1207                 (void) ThrowMagickException(exception,GetMagickModule(),
1208                   MissingDelegateError,"NoEncodeDelegateForThisImageFormat",
1209                   "`%s'",image->filename);
1210               else
1211                 (void) ThrowMagickException(exception,GetMagickModule(),
1212                   MissingDelegateWarning,"NoEncodeDelegateForThisImageFormat",
1213                   "`%s'",image->filename);
1214             }
1215           if ((magick_info != (const MagickInfo *) NULL) &&
1216               (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1217             {
1218               /*
1219                 Call appropriate image writer based on image type.
1220               */
1221               thread_support=GetMagickThreadSupport(magick_info);
1222               if ((thread_support & EncoderThreadSupport) == 0)
1223                 LockSemaphoreInfo(constitute_semaphore);
1224               status=GetImageEncoder(magick_info)(write_info,image,exception);
1225               if ((thread_support & EncoderThreadSupport) == 0)
1226                 UnlockSemaphoreInfo(constitute_semaphore);
1227             }
1228         }
1229     }
1230   if (GetBlobError(image) != MagickFalse)
1231     ThrowFileException(exception,FileOpenError,
1232       "AnErrorHasOccurredWritingToFile",image->filename);
1233   if (temporary != MagickFalse)
1234     {
1235       /*
1236         Copy temporary image file to permanent.
1237       */
1238       status=OpenBlob(write_info,image,ReadBinaryBlobMode,exception);
1239       if (status != MagickFalse)
1240         {
1241           (void) RelinquishUniqueFileResource(write_info->filename);
1242           status=ImageToFile(image,write_info->filename,exception);
1243         }
1244       (void) CloseBlob(image);
1245       (void) RelinquishUniqueFileResource(image->filename);
1246       (void) CopyMagickString(image->filename,write_info->filename,
1247         MaxTextExtent);
1248     }
1249   if ((LocaleCompare(write_info->magick,"info") != 0) &&
1250       (write_info->verbose != MagickFalse))
1251     (void) IdentifyImage(image,stdout,MagickFalse,exception);
1252   write_info=DestroyImageInfo(write_info);
1253   return(status);
1254 }
1255 \f
1256 /*
1257 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1258 %                                                                             %
1259 %                                                                             %
1260 %                                                                             %
1261 %   W r i t e I m a g e s                                                     %
1262 %                                                                             %
1263 %                                                                             %
1264 %                                                                             %
1265 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1266 %
1267 %  WriteImages() writes an image sequence into one or more files.  While
1268 %  WriteImage() can write an image sequence, it is limited to writing
1269 %  the sequence into a single file using a format which supports multiple
1270 %  frames.   WriteImages(), however, does not have this limitation, instead it
1271 %  generates multiple output files if necessary (or when requested).  When
1272 %  ImageInfo's adjoin flag is set to MagickFalse, the file name is expected
1273 %  to include a printf-style formatting string for the frame number (e.g.
1274 %  "image%02d.png").
1275 %
1276 %  The format of the WriteImages method is:
1277 %
1278 %      MagickBooleanType WriteImages(const ImageInfo *image_info,Image *images,
1279 %        const char *filename,ExceptionInfo *exception)
1280 %
1281 %  A description of each parameter follows:
1282 %
1283 %    o image_info: the image info.
1284 %
1285 %    o images: the image list.
1286 %
1287 %    o filename: the image filename.
1288 %
1289 %    o exception: return any errors or warnings in this structure.
1290 %
1291 */
1292 MagickExport MagickBooleanType WriteImages(const ImageInfo *image_info,
1293   Image *images,const char *filename,ExceptionInfo *exception)
1294 {
1295 #define WriteImageTag  "Write/Image"
1296
1297   BlobInfo
1298     *blob;
1299
1300   ExceptionInfo
1301     *sans_exception;
1302
1303   ImageInfo
1304     *write_info;
1305
1306   MagickBooleanType
1307     proceed;
1308
1309   MagickOffsetType
1310     i;
1311
1312   MagickProgressMonitor
1313     progress_monitor;
1314
1315   MagickSizeType
1316     number_images;
1317
1318   MagickStatusType
1319     status;
1320
1321   register Image
1322     *p;
1323
1324   assert(image_info != (const ImageInfo *) NULL);
1325   assert(image_info->signature == MagickSignature);
1326   assert(images != (Image *) NULL);
1327   assert(images->signature == MagickSignature);
1328   if (images->debug != MagickFalse)
1329     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
1330   assert(exception != (ExceptionInfo *) NULL);
1331   write_info=CloneImageInfo(image_info);
1332   images=GetFirstImageInList(images);
1333   blob=CloneBlobInfo(images->blob);  /* thread specific I/O handler */
1334   DestroyBlob(images);
1335   images->blob=blob;
1336   if (filename != (const char *) NULL)
1337     for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1338       (void) CopyMagickString(p->filename,filename,MaxTextExtent);
1339   (void) CopyMagickString(write_info->filename,images->filename,MaxTextExtent);
1340   if (*write_info->magick == '\0')
1341     (void) CopyMagickString(write_info->magick,images->magick,MaxTextExtent);
1342   sans_exception=AcquireExceptionInfo();
1343   (void) SetImageInfo(write_info,(unsigned int) GetImageListLength(images),
1344     sans_exception);
1345   sans_exception=DestroyExceptionInfo(sans_exception);
1346   p=images;
1347   for ( ; GetNextImageInList(p) != (Image *) NULL; p=GetNextImageInList(p))
1348     if (p->scene >= GetNextImageInList(p)->scene)
1349       {
1350         register ssize_t
1351           i;
1352
1353         /*
1354           Generate consistent scene numbers.
1355         */
1356         i=(ssize_t) images->scene;
1357         for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1358           p->scene=(size_t) i++;
1359         break;
1360       }
1361   /*
1362     Write images.
1363   */
1364   status=MagickTrue;
1365   progress_monitor=(MagickProgressMonitor) NULL;
1366   i=0;
1367   number_images=GetImageListLength(images);
1368   for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1369   {
1370     if (number_images != 1)
1371       progress_monitor=SetImageProgressMonitor(p,(MagickProgressMonitor) NULL,
1372         p->client_data);
1373     status&=WriteImage(write_info,p,exception);
1374     if (number_images != 1)
1375       (void) SetImageProgressMonitor(p,progress_monitor,p->client_data);
1376     if (write_info->adjoin != MagickFalse)
1377       break;
1378     if (number_images != 1)
1379       {
1380         proceed=SetImageProgress(p,WriteImageTag,i++,number_images);
1381         if (proceed == MagickFalse)
1382           break;
1383       }
1384   }
1385   write_info=DestroyImageInfo(write_info);
1386   return(status != 0 ? MagickTrue : MagickFalse);
1387 }