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       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 528       if (delegate_info == (const DelegateInfo *) NULL)
 529         {
 530           (void) SetImageInfo(read_info,0,exception);
 531           (void) CopyMagickString(read_info->filename,filename,MaxTextExtent);
 532           magick_info=GetMagickInfo(read_info->magick,exception);
 533         }
 534     }
 535   if ((magick_info != (const MagickInfo *) NULL) &&
 536       (GetImageDecoder(magick_info) != (DecodeImageHandler *) NULL))
 537     {
 538       thread_support=GetMagickThreadSupport(magick_info);
 539       if ((thread_support & DecoderThreadSupport) == 0)
 540         LockSemaphoreInfo(constitute_semaphore);
 541       image=GetImageDecoder(magick_info)(read_info,exception);
 542       if ((thread_support & DecoderThreadSupport) == 0)
 543         UnlockSemaphoreInfo(constitute_semaphore);
 544     }
 545   else
 546     {
 547       delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
 548       if (delegate_info == (const DelegateInfo *) NULL)
 549         {
 550           (void) ThrowMagickException(exception,GetMagickModule(),
 551             MissingDelegateError,"NoDecodeDelegateForThisImageFormat","'%s'",
 552             read_info->filename);
 553           if (read_info->temporary != MagickFalse)
 554             (void) RelinquishUniqueFileResource(read_info->filename);
 555           read_info=DestroyImageInfo(read_info);
 556           return((Image *) NULL);
 557         }
 558       /*
 559         Let our decoding delegate process the image.
 560       */
 561       image=AcquireImage(read_info,exception);
 562       if (image == (Image *) NULL)
 563         {
 564           read_info=DestroyImageInfo(read_info);
 565           return((Image *) NULL);
 566         }
 567       (void) CopyMagickString(image->filename,read_info->filename,
 568         MaxTextExtent);
 569       *read_info->filename='\0';
 570       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 571         LockSemaphoreInfo(constitute_semaphore);
 572       (void) InvokeDelegate(read_info,image,read_info->magick,(char *) NULL,
 573         exception);
 574       if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
 575         UnlockSemaphoreInfo(constitute_semaphore);
 576       image=DestroyImageList(image);
 577       read_info->temporary=MagickTrue;
 578       (void) SetImageInfo(read_info,0,exception);
 579       magick_info=GetMagickInfo(read_info->magick,exception);
 580       if ((magick_info == (const MagickInfo *) NULL) ||
 581           (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
 582         {
 583           if (IsPathAccessible(read_info->filename) != MagickFalse)
 584             (void) ThrowMagickException(exception,GetMagickModule(),
 585               MissingDelegateError,"NoDecodeDelegateForThisImageFormat","'%s'",
 586               read_info->filename);
 587           else
 588             ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 589               read_info->filename);
 590           read_info=DestroyImageInfo(read_info);
 591           return((Image *) NULL);
 592         }
 593       thread_support=GetMagickThreadSupport(magick_info);
 594       if ((thread_support & DecoderThreadSupport) == 0)
 595         LockSemaphoreInfo(constitute_semaphore);
 596       image=(Image *) (GetImageDecoder(magick_info))(read_info,exception);
 597       if ((thread_support & DecoderThreadSupport) == 0)
 598         UnlockSemaphoreInfo(constitute_semaphore);
 599     }
 600   if (read_info->temporary != MagickFalse)
 601     {
 602       (void) RelinquishUniqueFileResource(read_info->filename);
 603       read_info->temporary=MagickFalse;
 604       if (image != (Image *) NULL)
 605         (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 606     }
 607   if (image == (Image *) NULL)
 608     {
 609       read_info=DestroyImageInfo(read_info);
 610       return(image);
 611     }
 612   if (exception->severity >= ErrorException)
 613     (void) LogMagickEvent(ExceptionEvent,GetMagickModule(),
 614       "Coder (%s) generated an image despite an error (%d), "
 615       "notify the developers",image->magick,exception->severity);
 616   if (IsBlobTemporary(image) != MagickFalse)
 617     (void) RelinquishUniqueFileResource(read_info->filename);
 618   if ((GetNextImageInList(image) != (Image *) NULL) &&
 619       (IsSceneGeometry(read_info->scenes,MagickFalse) != MagickFalse))
 620     {
 621       Image
 622         *clones;
 623
 624       clones=CloneImages(image,read_info->scenes,exception);
 625       if (clones == (Image *) NULL)
 626         (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 627           "SubimageSpecificationReturnsNoImages","'%s'",read_info->filename);
 628       else
 629         {
 630           image=DestroyImageList(image);
 631           image=GetFirstImageInList(clones);
 632         }
 633     }
 634   if (GetBlobError(image) != MagickFalse)
 635     {
 636       ThrowFileException(exception,FileOpenError,
 637         "AnErrorHasOccurredReadingFromFile",read_info->filename);
 638       image=DestroyImageList(image);
 639       read_info=DestroyImageInfo(read_info);
 640       return((Image *) NULL);
 641     }
 642   for (next=image; next != (Image *) NULL; next=GetNextImageInList(next))
 643   {
 644     char
 645       magick_path[MaxTextExtent],
 646       *property,
 647       timestamp[MaxTextExtent];
 648
 649     const char
 650       *option;
 651
 652     const StringInfo
 653       *profile;
 654
 655     next->taint=MagickFalse;
 656     GetPathComponent(magick_filename,MagickPath,magick_path);
 657     if (*magick_path == '\0')
 658       (void) CopyMagickString(next->magick,magick,MaxTextExtent);
 659     (void) CopyMagickString(next->magick_filename,magick_filename,
 660       MaxTextExtent);
 661     if (IsBlobTemporary(image) != MagickFalse)
 662       (void) CopyMagickString(next->filename,filename,MaxTextExtent);
 663     if (next->magick_columns == 0)
 664       next->magick_columns=next->columns;
 665     if (next->magick_rows == 0)
 666       next->magick_rows=next->rows;
 667     value=GetImageProperty(next,"tiff:Orientation",exception);
 668     if (value == (char *) NULL)
 669       value=GetImageProperty(next,"exif:Orientation",exception);
 670     if (value != (char *) NULL)
 671       {
 672         next->orientation=(OrientationType) StringToLong(value);
 673         (void) DeleteImageProperty(next,"tiff:Orientation");
 674         (void) DeleteImageProperty(next,"exif:Orientation");
 675       }
 676     value=GetImageProperty(next,"exif:XResolution",exception);
 677     if (value != (char *) NULL)
 678       {
 679         geometry_info.rho=next->resolution.x;
 680         geometry_info.sigma=1.0;
 681         flags=ParseGeometry(value,&geometry_info);
 682         if (geometry_info.sigma != 0)
 683           next->resolution.x=geometry_info.rho/geometry_info.sigma;
 684         (void) DeleteImageProperty(next,"exif:XResolution");
 685       }
 686     value=GetImageProperty(next,"exif:YResolution",exception);
 687     if (value != (char *) NULL)
 688       {
 689         geometry_info.rho=next->resolution.y;
 690         geometry_info.sigma=1.0;
 691         flags=ParseGeometry(value,&geometry_info);
 692         if (geometry_info.sigma != 0)
 693           next->resolution.y=geometry_info.rho/geometry_info.sigma;
 694         (void) DeleteImageProperty(next,"exif:YResolution");
 695       }
 696     value=GetImageProperty(next,"tiff:ResolutionUnit",exception);
 697     if (value == (char *) NULL)
 698       value=GetImageProperty(next,"exif:ResolutionUnit",exception);
 699     if (value != (char *) NULL)
 700       {
 701         next->units=(ResolutionType) (StringToLong(value)-1);
 702         (void) DeleteImageProperty(next,"exif:ResolutionUnit");
 703         (void) DeleteImageProperty(next,"tiff:ResolutionUnit");
 704       }
 705     if (next->page.width == 0)
 706       next->page.width=next->columns;
 707     if (next->page.height == 0)
 708       next->page.height=next->rows;
 709     option=GetImageOption(read_info,"caption");
 710     if (option != (const char *) NULL)
 711       {
 712         property=InterpretImageProperties(read_info,next,option,exception);
 713         (void) SetImageProperty(next,"caption",property,exception);
 714         property=DestroyString(property);
 715       }
 716     option=GetImageOption(read_info,"comment");
 717     if (option != (const char *) NULL)
 718       {
 719         property=InterpretImageProperties(read_info,next,option,exception);
 720         (void) SetImageProperty(next,"comment",property,exception);
 721         property=DestroyString(property);
 722       }
 723     option=GetImageOption(read_info,"label");
 724     if (option != (const char *) NULL)
 725       {
 726         property=InterpretImageProperties(read_info,next,option,exception);
 727         (void) SetImageProperty(next,"label",property,exception);
 728         property=DestroyString(property);
 729       }
 730     if (LocaleCompare(next->magick,"TEXT") == 0)
 731       (void) ParseAbsoluteGeometry("0x0+0+0",&next->page);
 732     if ((read_info->extract != (char *) NULL) &&
 733         (read_info->stream == (StreamHandler) NULL))
 734       {
 735         RectangleInfo
 736           geometry;
 737
 738         flags=ParseAbsoluteGeometry(read_info->extract,&geometry);
 739         if ((next->columns != geometry.width) ||
 740             (next->rows != geometry.height))
 741           {
 742             if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 743               {
 744                 Image
 745                   *crop_image;
 746
 747                 crop_image=CropImage(next,&geometry,exception);
 748                 if (crop_image != (Image *) NULL)
 749                   ReplaceImageInList(&next,crop_image);
 750               }
 751             else
 752               if (((flags & WidthValue) != 0) || ((flags & HeightValue) != 0))
 753                 {
 754                   Image
 755                     *size_image;
 756
 757                   flags=ParseRegionGeometry(next,read_info->extract,&geometry,
 758                     exception);
 759                   size_image=ResizeImage(next,geometry.width,geometry.height,
 760                     next->filter,exception);
 761                   if (size_image != (Image *) NULL)
 762                     ReplaceImageInList(&next,size_image);
 763                 }
 764           }
 765       }
 766     profile=GetImageProfile(next,"icc");
 767     if (profile == (const StringInfo *) NULL)
 768       profile=GetImageProfile(next,"icm");
 769     profile=GetImageProfile(next,"iptc");
 770     if (profile == (const StringInfo *) NULL)
 771       profile=GetImageProfile(next,"8bim");
 772     (void) FormatMagickTime(GetBlobProperties(next)->st_mtime,MaxTextExtent,
 773       timestamp);
 774     (void) SetImageProperty(next,"date:modify",timestamp,exception);
 775     (void) FormatMagickTime(GetBlobProperties(next)->st_ctime,MaxTextExtent,
 776       timestamp);
 777     (void) SetImageProperty(next,"date:create",timestamp,exception);
 778     option=GetImageOption(image_info,"delay");
 779     if (option != (const char *) NULL)
 780       {
 781         GeometryInfo
 782           geometry_info;
 783
 784         flags=ParseGeometry(option,&geometry_info);
 785         if ((flags & GreaterValue) != 0)
 786           {
 787             if (next->delay > (size_t) floor(geometry_info.rho+0.5))
 788               next->delay=(size_t) floor(geometry_info.rho+0.5);
 789           }
 790         else
 791           if ((flags & LessValue) != 0)
 792             {
 793               if (next->delay < (size_t) floor(geometry_info.rho+0.5))
 794                 next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 795             }
 796           else
 797             next->delay=(size_t) floor(geometry_info.rho+0.5);
 798         if ((flags & SigmaValue) != 0)
 799           next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 800       }
 801     option=GetImageOption(image_info,"dispose");
 802     if (option != (const char *) NULL)
 803       next->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
 804         MagickFalse,option);
 805     if (read_info->verbose != MagickFalse)
 806       (void) IdentifyImage(next,stderr,MagickFalse,exception);
 807     image=next;
 808   }
 809   read_info=DestroyImageInfo(read_info);
 810   return(GetFirstImageInList(image));
 811 }
 812 \f
 813 /*
 814 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 815 %                                                                             %
 816 %                                                                             %
 817 %                                                                             %
 818 %   R e a d I m a g e s                                                       %
 819 %                                                                             %
 820 %                                                                             %
 821 %                                                                             %
 822 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 823 %
 824 %  ReadImages() reads one or more images and returns them as an image list.
 825 %
 826 %  The format of the ReadImage method is:
 827 %
 828 %      Image *ReadImages(ImageInfo *image_info,const char *filename,
 829 %        ExceptionInfo *exception)
 830 %
 831 %  A description of each parameter follows:
 832 %
 833 %    o image_info: the image info.
 834 %
 835 %    o filename: the image filename.
 836 %
 837 %    o exception: return any errors or warnings in this structure.
 838 %
 839 */
 840 MagickExport Image *ReadImages(ImageInfo *image_info,const char *filename,
 841   ExceptionInfo *exception)
 842 {
 843   char
 844     read_filename[MaxTextExtent];
 845
 846   Image
 847     *image,
 848     *images;
 849
 850   ImageInfo
 851     *read_info;
 852
 853   /*
 854     Read image list from a file.
 855   */
 856   assert(image_info != (ImageInfo *) NULL);
 857   assert(image_info->signature == MagickSignature);
 858   if (image_info->debug != MagickFalse)
 859     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 860       image_info->filename);
 861   assert(exception != (ExceptionInfo *) NULL);
 862   (void) SetImageOption(image_info,"filename",filename);
 863   (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 864   (void) InterpretImageFilename(image_info,(Image *) NULL,filename,
 865     (int) image_info->scene,read_filename,exception);
 866   if (LocaleCompare(read_filename,image_info->filename) != 0)
 867     {
 868       ExceptionInfo
 869         *sans;
 870
 871       ssize_t
 872         extent,
 873         scene;
 874
 875       /*
 876         Images of the form image-%d.png[1-5].
 877       */
 878       read_info=CloneImageInfo(image_info);
 879       sans=AcquireExceptionInfo();
 880       (void) SetImageInfo(read_info,0,sans);
 881       sans=DestroyExceptionInfo(sans);
 882       if (read_info->number_scenes == 0)
 883         {
 884           read_info=DestroyImageInfo(read_info);
 885           return(ReadImage(image_info,exception));
 886         }
 887       (void) CopyMagickString(read_filename,read_info->filename,MaxTextExtent);
 888       images=NewImageList();
 889       extent=(ssize_t) (read_info->scene+read_info->number_scenes);
 890       for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
 891       {
 892         (void) InterpretImageFilename(image_info,(Image *) NULL,read_filename,
 893           (int) scene,read_info->filename,exception);
 894         image=ReadImage(read_info,exception);
 895         if (image == (Image *) NULL)
 896           continue;
 897         AppendImageToList(&images,image);
 898       }
 899       read_info=DestroyImageInfo(read_info);
 900       return(images);
 901     }
 902   return(ReadImage(image_info,exception));
 903 }
 904 \f
 905 /*
 906 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 907 %                                                                             %
 908 %                                                                             %
 909 %                                                                             %
 910 +   R e a d I n l i n e I m a g e                                             %
 911 %                                                                             %
 912 %                                                                             %
 913 %                                                                             %
 914 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 915 %
 916 %  ReadInlineImage() reads a Base64-encoded inline image or image sequence.
 917 %  The method returns a NULL if there is a memory shortage or if the image
 918 %  cannot be read.  On failure, a NULL image is returned and exception
 919 %  describes the reason for the failure.
 920 %
 921 %  The format of the ReadInlineImage method is:
 922 %
 923 %      Image *ReadInlineImage(const ImageInfo *image_info,const char *content,
 924 %        ExceptionInfo *exception)
 925 %
 926 %  A description of each parameter follows:
 927 %
 928 %    o image_info: the image info.
 929 %
 930 %    o content: the image encoded in Base64.
 931 %
 932 %    o exception: return any errors or warnings in this structure.
 933 %
 934 */
 935 MagickExport Image *ReadInlineImage(const ImageInfo *image_info,
 936   const char *content,ExceptionInfo *exception)
 937 {
 938   Image
 939     *image;
 940
 941   ImageInfo
 942     *read_info;
 943
 944   unsigned char
 945     *blob;
 946
 947   size_t
 948     length;
 949
 950   register const char
 951     *p;
 952
 953   /*
 954     Skip over header (e.g. data:image/gif;base64,).
 955   */
 956   image=NewImageList();
 957   for (p=content; (*p != ',') && (*p != '\0'); p++) ;
 958   if (*p == '\0')
 959     ThrowReaderException(CorruptImageError,"CorruptImage");
 960   p++;
 961   length=0;
 962   blob=Base64Decode(p,&length);
 963   if (length == 0)
 964     ThrowReaderException(CorruptImageError,"CorruptImage");
 965   read_info=CloneImageInfo(image_info);
 966   (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
 967     (void *) NULL);
 968   *read_info->filename='\0';
 969   *read_info->magick='\0';
 970   image=BlobToImage(read_info,blob,length,exception);
 971   blob=(unsigned char *) RelinquishMagickMemory(blob);
 972   read_info=DestroyImageInfo(read_info);
 973   return(image);
 974 }
 975 \f
 976 /*
 977 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 978 %                                                                             %
 979 %                                                                             %
 980 %                                                                             %
 981 %   W r i t e I m a g e                                                       %
 982 %                                                                             %
 983 %                                                                             %
 984 %                                                                             %
 985 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 986 %
 987 %  WriteImage() writes an image or an image sequence to a file or file handle.
 988 %  If writing to a file is on disk, the name is defined by the filename member
 989 %  of the image structure.  WriteImage() returns MagickFalse is there is a
 990 %  memory shortage or if the image cannot be written.  Check the exception
 991 %  member of image to determine the cause for any failure.
 992 %
 993 %  The format of the WriteImage method is:
 994 %
 995 %      MagickBooleanType WriteImage(const ImageInfo *image_info,Image *image,
 996 %        ExceptionInfo *exception)
 997 %
 998 %  A description of each parameter follows:
 999 %
1000 %    o image_info: the image info.
1001 %
1002 %    o image: the image.
1003 %
1004 %    o exception: return any errors or warnings in this structure.
1005 %
1006 */
1007 MagickExport MagickBooleanType WriteImage(const ImageInfo *image_info,
1008   Image *image,ExceptionInfo *exception)
1009 {
1010   char
1011     filename[MaxTextExtent];
1012
1013   const char
1014     *option;
1015
1016   const DelegateInfo
1017     *delegate_info;
1018
1019   const MagickInfo
1020     *magick_info;
1021
1022   ExceptionInfo
1023     *sans_exception;
1024
1025   ImageInfo
1026     *write_info;
1027
1028   MagickBooleanType
1029     status,
1030     temporary;
1031
1032   MagickStatusType
1033     thread_support;
1034
1035   PolicyDomain
1036     domain;
1037
1038   PolicyRights
1039     rights;
1040
1041   /*
1042     Determine image type from filename prefix or suffix (e.g. image.jpg).
1043   */
1044   assert(image_info != (ImageInfo *) NULL);
1045   assert(image_info->signature == MagickSignature);
1046   if (image->debug != MagickFalse)
1047     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1048       image_info->filename);
1049   assert(image != (Image *) NULL);
1050   assert(image->signature == MagickSignature);
1051   assert(exception != (ExceptionInfo *) NULL);
1052   sans_exception=AcquireExceptionInfo();
1053   write_info=CloneImageInfo(image_info);
1054   (void) CopyMagickString(write_info->filename,image->filename,MaxTextExtent);
1055   if (*write_info->magick == '\0')
1056     (void) CopyMagickString(write_info->magick,image->magick,MaxTextExtent);
1057   (void) SetImageInfo(write_info,1,sans_exception);
1058   (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1059   (void) CopyMagickString(image->filename,write_info->filename,MaxTextExtent);
1060   domain=CoderPolicyDomain;
1061   rights=WritePolicyRights;
1062   if (IsRightsAuthorized(domain,rights,write_info->magick) == MagickFalse)
1063     {
1064       sans_exception=DestroyExceptionInfo(sans_exception);
1065       errno=EPERM;
1066       ThrowBinaryException(PolicyError,"NotAuthorized",filename);
1067     }
1068   magick_info=GetMagickInfo(write_info->magick,sans_exception);
1069   sans_exception=DestroyExceptionInfo(sans_exception);
1070   if (magick_info != (const MagickInfo *) NULL)
1071     {
1072       if (GetMagickEndianSupport(magick_info) == MagickFalse)
1073         image->endian=UndefinedEndian;
1074       else
1075         if ((image_info->endian == UndefinedEndian) &&
1076             (GetMagickRawSupport(magick_info) != MagickFalse))
1077           {
1078             size_t
1079               lsb_first;
1080
1081             lsb_first=1;
1082             image->endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
1083          }
1084     }
1085   (void) SyncImageProfiles(image);
1086   option=GetImageOption(image_info,"delegate:bimodal");
1087   if ((IfMagickTrue(IsStringTrue(option))) &&
1088       (write_info->page == (char *) NULL) &&
1089       (GetPreviousImageInList(image) == (Image *) NULL) &&
1090       (GetNextImageInList(image) == (Image *) NULL) &&
1091       (IfMagickFalse(IsTaintImage(image))) )
1092     {
1093       delegate_info=GetDelegateInfo(image->magick,write_info->magick,exception);
1094       if ((delegate_info != (const DelegateInfo *) NULL) &&
1095           (GetDelegateMode(delegate_info) == 0) &&
1096           (IsPathAccessible(image->magick_filename) != MagickFalse))
1097         {
1098           /*
1099             Process image with bi-modal delegate.
1100           */
1101           (void) CopyMagickString(image->filename,image->magick_filename,
1102             MaxTextExtent);
1103           status=InvokeDelegate(write_info,image,image->magick,
1104             write_info->magick,exception);
1105           write_info=DestroyImageInfo(write_info);
1106           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1107           return(status);
1108         }
1109     }
1110   status=MagickFalse;
1111   temporary=MagickFalse;
1112   if ((magick_info != (const MagickInfo *) NULL) &&
1113       (GetMagickSeekableStream(magick_info) != MagickFalse))
1114     {
1115       char
1116         filename[MaxTextExtent];
1117
1118       (void) CopyMagickString(filename,image->filename,MaxTextExtent);
1119       status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
1120       (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1121       if (status != MagickFalse)
1122         {
1123           if (IsBlobSeekable(image) == MagickFalse)
1124             {
1125               /*
1126                 A seekable stream is required by the encoder.
1127               */
1128               write_info->adjoin=MagickTrue;
1129               (void) CopyMagickString(write_info->filename,image->filename,
1130                 MaxTextExtent);
1131               (void) AcquireUniqueFilename(image->filename);
1132               temporary=MagickTrue;
1133             }
1134           (void) CloseBlob(image);
1135         }
1136     }
1137   if (constitute_semaphore == (SemaphoreInfo *) NULL)
1138     AcquireSemaphoreInfo(&constitute_semaphore);
1139   if ((magick_info != (const MagickInfo *) NULL) &&
1140       (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1141     {
1142       /*
1143         Call appropriate image writer based on image type.
1144       */
1145       thread_support=GetMagickThreadSupport(magick_info);
1146       if ((thread_support & EncoderThreadSupport) == 0)
1147         LockSemaphoreInfo(constitute_semaphore);
1148       status=GetImageEncoder(magick_info)(write_info,image,exception);
1149       if ((thread_support & EncoderThreadSupport) == 0)
1150         UnlockSemaphoreInfo(constitute_semaphore);
1151     }
1152   else
1153     {
1154       delegate_info=GetDelegateInfo((char *) NULL,write_info->magick,exception);
1155       if (delegate_info != (DelegateInfo *) NULL)
1156         {
1157           /*
1158             Process the image with delegate.
1159           */
1160           *write_info->filename='\0';
1161           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1162             LockSemaphoreInfo(constitute_semaphore);
1163           status=InvokeDelegate(write_info,image,(char *) NULL,
1164             write_info->magick,exception);
1165           if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
1166             UnlockSemaphoreInfo(constitute_semaphore);
1167           (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1168         }
1169       else
1170         {
1171           sans_exception=AcquireExceptionInfo();
1172           magick_info=GetMagickInfo(write_info->magick,sans_exception);
1173           sans_exception=DestroyExceptionInfo(sans_exception);
1174           if ((write_info->affirm == MagickFalse) &&
1175               (magick_info == (const MagickInfo *) NULL))
1176             {
1177               (void) CopyMagickString(write_info->magick,image->magick,
1178                 MaxTextExtent);
1179               magick_info=GetMagickInfo(write_info->magick,exception);
1180             }
1181           if ((magick_info == (const MagickInfo *) NULL) ||
1182               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1183             {
1184               char
1185                 extension[MaxTextExtent];
1186
1187               GetPathComponent(image->filename,ExtensionPath,extension);
1188               if (*extension != '\0')
1189                 magick_info=GetMagickInfo(extension,exception);
1190               else
1191                 magick_info=GetMagickInfo(image->magick,exception);
1192               (void) CopyMagickString(image->filename,filename,MaxTextExtent);
1193             }
1194           if ((magick_info == (const MagickInfo *) NULL) ||
1195               (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1196             {
1197               magick_info=GetMagickInfo(image->magick,exception);
1198               if ((magick_info == (const MagickInfo *) NULL) ||
1199                   (GetImageEncoder(magick_info) == (EncodeImageHandler *) NULL))
1200                 (void) ThrowMagickException(exception,GetMagickModule(),
1201                   MissingDelegateError,"NoEncodeDelegateForThisImageFormat",
1202                   "'%s'",image->filename);
1203               else
1204                 (void) ThrowMagickException(exception,GetMagickModule(),
1205                   MissingDelegateWarning,"NoEncodeDelegateForThisImageFormat",
1206                   "'%s'",image->filename);
1207             }
1208           if ((magick_info != (const MagickInfo *) NULL) &&
1209               (GetImageEncoder(magick_info) != (EncodeImageHandler *) NULL))
1210             {
1211               /*
1212                 Call appropriate image writer based on image type.
1213               */
1214               thread_support=GetMagickThreadSupport(magick_info);
1215               if ((thread_support & EncoderThreadSupport) == 0)
1216                 LockSemaphoreInfo(constitute_semaphore);
1217               status=GetImageEncoder(magick_info)(write_info,image,exception);
1218               if ((thread_support & EncoderThreadSupport) == 0)
1219                 UnlockSemaphoreInfo(constitute_semaphore);
1220             }
1221         }
1222     }
1223   if (GetBlobError(image) != MagickFalse)
1224     ThrowFileException(exception,FileOpenError,
1225       "AnErrorHasOccurredWritingToFile",image->filename);
1226   if (temporary == MagickTrue)
1227     {
1228       /*
1229         Copy temporary image file to permanent.
1230       */
1231       status=OpenBlob(write_info,image,ReadBinaryBlobMode,exception);
1232       if (status != MagickFalse)
1233         {
1234           (void) RelinquishUniqueFileResource(write_info->filename);
1235           status=ImageToFile(image,write_info->filename,exception);
1236         }
1237       (void) CloseBlob(image);
1238       (void) RelinquishUniqueFileResource(image->filename);
1239       (void) CopyMagickString(image->filename,write_info->filename,
1240         MaxTextExtent);
1241     }
1242   if ((LocaleCompare(write_info->magick,"info") != 0) &&
1243       (write_info->verbose != MagickFalse))
1244     (void) IdentifyImage(image,stdout,MagickFalse,exception);
1245   write_info=DestroyImageInfo(write_info);
1246   return(status);
1247 }
1248 \f
1249 /*
1250 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1251 %                                                                             %
1252 %                                                                             %
1253 %                                                                             %
1254 %   W r i t e I m a g e s                                                     %
1255 %                                                                             %
1256 %                                                                             %
1257 %                                                                             %
1258 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1259 %
1260 %  WriteImages() writes an image sequence into one or more files.  While
1261 %  WriteImage() can write an image sequence, it is limited to writing
1262 %  the sequence into a single file using a format which supports multiple
1263 %  frames.   WriteImages(), however, does not have this limitation, instead it
1264 %  generates multiple output files if necessary (or when requested).  When
1265 %  ImageInfo's adjoin flag is set to MagickFalse, the file name is expected
1266 %  to include a printf-style formatting string for the frame number (e.g.
1267 %  "image%02d.png").
1268 %
1269 %  The format of the WriteImages method is:
1270 %
1271 %      MagickBooleanType WriteImages(const ImageInfo *image_info,Image *images,
1272 %        const char *filename,ExceptionInfo *exception)
1273 %
1274 %  A description of each parameter follows:
1275 %
1276 %    o image_info: the image info.
1277 %
1278 %    o images: the image list.
1279 %
1280 %    o filename: the image filename.
1281 %
1282 %    o exception: return any errors or warnings in this structure.
1283 %
1284 */
1285 MagickExport MagickBooleanType WriteImages(const ImageInfo *image_info,
1286   Image *images,const char *filename,ExceptionInfo *exception)
1287 {
1288 #define WriteImageTag  "Write/Image"
1289
1290   BlobInfo
1291     *blob;
1292
1293   ExceptionInfo
1294     *sans_exception;
1295
1296   ImageInfo
1297     *write_info;
1298
1299   MagickBooleanType
1300     proceed;
1301
1302   MagickOffsetType
1303     i;
1304
1305   MagickProgressMonitor
1306     progress_monitor;
1307
1308   MagickSizeType
1309     number_images;
1310
1311   MagickStatusType
1312     status;
1313
1314   register Image
1315     *p;
1316
1317   assert(image_info != (const ImageInfo *) NULL);
1318   assert(image_info->signature == MagickSignature);
1319   assert(images != (Image *) NULL);
1320   assert(images->signature == MagickSignature);
1321   if (images->debug != MagickFalse)
1322     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
1323   assert(exception != (ExceptionInfo *) NULL);
1324   write_info=CloneImageInfo(image_info);
1325   images=GetFirstImageInList(images);
1326   blob=CloneBlobInfo(images->blob);  /* thread specific I/O handler */
1327   DestroyBlob(images);
1328   images->blob=blob;
1329   if (filename != (const char *) NULL)
1330     for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1331       (void) CopyMagickString(p->filename,filename,MaxTextExtent);
1332   (void) CopyMagickString(write_info->filename,images->filename,MaxTextExtent);
1333   if (*write_info->magick == '\0')
1334     (void) CopyMagickString(write_info->magick,images->magick,MaxTextExtent);
1335   sans_exception=AcquireExceptionInfo();
1336   (void) SetImageInfo(write_info,(unsigned int) GetImageListLength(images),
1337     sans_exception);
1338   sans_exception=DestroyExceptionInfo(sans_exception);
1339   p=images;
1340   for ( ; GetNextImageInList(p) != (Image *) NULL; p=GetNextImageInList(p))
1341     if (p->scene >= GetNextImageInList(p)->scene)
1342       {
1343         register ssize_t
1344           i;
1345
1346         /*
1347           Generate consistent scene numbers.
1348         */
1349         i=(ssize_t) images->scene;
1350         for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1351           p->scene=(size_t) i++;
1352         break;
1353       }
1354   /*
1355     Write images.
1356   */
1357   status=MagickTrue;
1358   progress_monitor=(MagickProgressMonitor) NULL;
1359   i=0;
1360   number_images=GetImageListLength(images);
1361   for (p=images; p != (Image *) NULL; p=GetNextImageInList(p))
1362   {
1363     if (number_images != 1)
1364       progress_monitor=SetImageProgressMonitor(p,(MagickProgressMonitor) NULL,
1365         p->client_data);
1366     status&=WriteImage(write_info,p,exception);
1367     if (number_images != 1)
1368       (void) SetImageProgressMonitor(p,progress_monitor,p->client_data);
1369     if (write_info->adjoin != MagickFalse)
1370       break;
1371     if (number_images != 1)
1372       {
1373         proceed=SetImageProgress(p,WriteImageTag,i++,number_images);
1374         if (proceed == MagickFalse)
1375           break;
1376       }
1377   }
1378   write_info=DestroyImageInfo(write_info);
1379   return(status != 0 ? MagickTrue : MagickFalse);
1380 }