granicus.if.org Git - imagemagick/blob - coders/webp.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                         W   W  EEEEE  BBBB   PPPP                           %
   7 %                         W   W  E      B   B  P   P                          %
   8 %                         W W W  EEE    BBBB   PPPP                           %
   9 %                         WW WW  E      B   B  P                              %
  10 %                         W   W  EEEEE  BBBB   P                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                         Read/Write WebP Image Format                        %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 March 2011                                  %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2013 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/client.h"
  46 #include "MagickCore/display.h"
  47 #include "MagickCore/exception.h"
  48 #include "MagickCore/exception-private.h"
  49 #include "MagickCore/image.h"
  50 #include "MagickCore/image-private.h"
  51 #include "MagickCore/list.h"
  52 #include "MagickCore/magick.h"
  53 #include "MagickCore/monitor.h"
  54 #include "MagickCore/monitor-private.h"
  55 #include "MagickCore/memory_.h"
  56 #include "MagickCore/option.h"
  57 #include "MagickCore/pixel-accessor.h"
  58 #include "MagickCore/quantum-private.h"
  59 #include "MagickCore/static.h"
  60 #include "MagickCore/string_.h"
  61 #include "MagickCore/string-private.h"
  62 #include "MagickCore/module.h"
  63 #include "MagickCore/utility.h"
  64 #include "MagickCore/xwindow.h"
  65 #include "MagickCore/xwindow-private.h"
  66 #if defined(MAGICKCORE_WEBP_DELEGATE)
  67 #include <webp/decode.h>
  68 #include <webp/encode.h>
  69 #endif
  70 \f
  71 /*
  72   Forward declarations.
  73 */
  74 #if defined(MAGICKCORE_WEBP_DELEGATE)
  75 static MagickBooleanType
  76   WriteWEBPImage(const ImageInfo *,Image *,ExceptionInfo *);
  77 #endif
  78 \f
  79 /*
  80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  81 %                                                                             %
  82 %                                                                             %
  83 %                                                                             %
  84 %   I s W E B P                                                               %
  85 %                                                                             %
  86 %                                                                             %
  87 %                                                                             %
  88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  89 %
  90 %  IsWEBP() returns MagickTrue if the image format type, identified by the
  91 %  magick string, is WebP.
  92 %
  93 %  The format of the IsWEBP method is:
  94 %
  95 %      MagickBooleanType IsWEBP(const unsigned char *magick,const size_t length)
  96 %
  97 %  A description of each parameter follows:
  98 %
  99 %    o magick: compare image format pattern against these bytes.
 100 %
 101 %    o length: Specifies the length of the magick string.
 102 %
 103 */
 104 static MagickBooleanType IsWEBP(const unsigned char *magick,const size_t length)
 105 {
 106   if (length < 12)
 107     return(MagickFalse);
 108   if (LocaleNCompare((const char *) magick+8,"WEBP",4) == 0)
 109     return(MagickTrue);
 110   return(MagickFalse);
 111 }
 112 \f
 113 #if defined(MAGICKCORE_WEBP_DELEGATE)
 114 /*
 115 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 116 %                                                                             %
 117 %                                                                             %
 118 %                                                                             %
 119 %   R e a d W E B P I m a g e                                                 %
 120 %                                                                             %
 121 %                                                                             %
 122 %                                                                             %
 123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 124 %
 125 %  ReadWEBPImage() reads an image in the WebP image format.
 126 %
 127 %  The format of the ReadWEBPImage method is:
 128 %
 129 %      Image *ReadWEBPImage(const ImageInfo *image_info,
 130 %        ExceptionInfo *exception)
 131 %
 132 %  A description of each parameter follows:
 133 %
 134 %    o image_info: the image info.
 135 %
 136 %    o exception: return any errors or warnings in this structure.
 137 %
 138 */
 139
 140 static inline uint32_t ReadWebPLSBWord(const unsigned char *restrict data)
 141 {
 142   register const unsigned char
 143     *p;
 144
 145   register uint32_t
 146     value;
 147
 148   p=data;
 149   value=(uint32_t) (*p++);
 150   value|=((uint32_t) (*p++)) << 8;
 151   value|=((uint32_t) (*p++)) << 16;
 152   value|=((uint32_t) (*p++)) << 24;
 153   return(value);
 154 }
 155
 156 static MagickBooleanType IsWEBPImageLossless(const unsigned char *stream,
 157   const size_t length)
 158 {
 159 #define VP8_CHUNK_INDEX  15
 160 #define LOSSLESS_FLAG  'L'
 161 #define EXTENDED_HEADER  'X'
 162 #define VP8_CHUNK_HEADER  "VP8"
 163 #define VP8_CHUNK_HEADER_SIZE  3
 164 #define RIFF_HEADER_SIZE  12
 165 #define VP8X_CHUNK_SIZE  10
 166 #define TAG_SIZE  4
 167 #define CHUNK_SIZE_BYTES  4
 168 #define CHUNK_HEADER_SIZE  8
 169 #define MAX_CHUNK_PAYLOAD  (~0U-CHUNK_HEADER_SIZE-1)
 170
 171   ssize_t
 172     offset;
 173
 174   /*
 175     Read simple header.
 176   */
 177   if (stream[VP8_CHUNK_INDEX] != EXTENDED_HEADER)
 178    return(stream[VP8_CHUNK_INDEX] == LOSSLESS_FLAG ? MagickTrue : MagickFalse);
 179   /*
 180     Read extended header.
 181   */
 182   offset=RIFF_HEADER_SIZE+TAG_SIZE+CHUNK_SIZE_BYTES+VP8X_CHUNK_SIZE;
 183   while (offset <= length)
 184   {
 185     uint32_t
 186       chunk_size,
 187       chunk_size_pad;
 188
 189     chunk_size=ReadWebPLSBWord(stream+offset+TAG_SIZE);
 190     if (chunk_size > MAX_CHUNK_PAYLOAD)
 191       break;
 192     chunk_size_pad=(CHUNK_HEADER_SIZE+chunk_size+1) & ~1;
 193     if (memcmp( stream+offset,VP8_CHUNK_HEADER,VP8_CHUNK_HEADER_SIZE) == 0)
 194       return(*(stream+offset+VP8_CHUNK_HEADER_SIZE) == LOSSLESS_FLAG ?
 195         MagickTrue : MagickFalse);
 196     offset+=chunk_size_pad;
 197   }
 198   return(MagickFalse);
 199 }
 200
 201 static Image *ReadWEBPImage(const ImageInfo *image_info,
 202   ExceptionInfo *exception)
 203 {
 204   Image
 205     *image;
 206
 207   MagickBooleanType
 208     status;
 209
 210   register unsigned char
 211     *p;
 212
 213   size_t
 214     length;
 215
 216   ssize_t
 217     count,
 218     y;
 219
 220   unsigned char
 221     *stream;
 222
 223   WebPDecoderConfig
 224     configure;
 225
 226   WebPDecBuffer
 227     *restrict webp_image = &configure.output;
 228
 229   WebPBitstreamFeatures
 230     *restrict features = &configure.input;
 231
 232   /*
 233     Open image file.
 234   */
 235   assert(image_info != (const ImageInfo *) NULL);
 236   assert(image_info->signature == MagickSignature);
 237   if (image_info->debug != MagickFalse)
 238     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 239       image_info->filename);
 240   assert(exception != (ExceptionInfo *) NULL);
 241   assert(exception->signature == MagickSignature);
 242   image=AcquireImage(image_info,exception);
 243   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 244   if (status == MagickFalse)
 245     {
 246       image=DestroyImageList(image);
 247       return((Image *) NULL);
 248     }
 249   if (WebPInitDecoderConfig(&configure) == 0)
 250     ThrowReaderException(ResourceLimitError,"UnableToDecodeImageFile");
 251   length=(size_t) GetBlobSize(image);
 252   stream=(unsigned char *) AcquireQuantumMemory(length,sizeof(*stream));
 253   if (stream == (unsigned char *) NULL)
 254     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 255   count=ReadBlob(image,length,stream);
 256   if (count != (ssize_t) length)
 257     ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
 258   if (WebPGetFeatures(stream,length,features) != 0)
 259     {
 260       stream=(unsigned char*) RelinquishMagickMemory(stream);
 261       ThrowReaderException(ResourceLimitError,"UnableToDecodeImageFile");
 262     }
 263   webp_image->colorspace=MODE_RGBA;
 264   if (WebPDecode(stream,length,&configure) != 0)
 265     {
 266       stream=(unsigned char*) RelinquishMagickMemory(stream);
 267       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 268     }
 269   image->columns=(size_t) webp_image->width;
 270   image->rows=(size_t) webp_image->height;
 271   image->alpha_trait=features->has_alpha != 0 ? BlendPixelTrait :
 272     UndefinedPixelTrait;
 273   if (IsWEBPImageLossless(stream,length) != MagickFalse)
 274     image->quality=100;
 275   p=webp_image->u.RGBA.rgba;
 276   for (y=0; y < (ssize_t) image->rows; y++)
 277   {
 278     register Quantum
 279       *q;
 280
 281     register ssize_t
 282       x;
 283
 284     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 285     if (q == (Quantum *) NULL)
 286       break;
 287     for (x=0; x < (ssize_t) image->columns; x++)
 288     {
 289       SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 290       SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 291       SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 292       SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
 293       q+=GetPixelChannels(image);
 294     }
 295     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 296       break;
 297     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 298       image->rows);
 299     if (status == MagickFalse)
 300       break;
 301   }
 302   WebPFreeDecBuffer(webp_image);
 303   stream=(unsigned char*) RelinquishMagickMemory(stream);
 304   return(image);
 305 }
 306 #endif
 307 \f
 308 /*
 309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 310 %                                                                             %
 311 %                                                                             %
 312 %                                                                             %
 313 %   R e g i s t e r W E B P I m a g e                                         %
 314 %                                                                             %
 315 %                                                                             %
 316 %                                                                             %
 317 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 318 %
 319 %  RegisterWEBPImage() adds attributes for the WebP image format to
 320 %  the list of supported formats.  The attributes include the image format
 321 %  tag, a method to read and/or write the format, whether the format
 322 %  supports the saving of more than one frame to the same file or blob,
 323 %  whether the format supports native in-memory I/O, and a brief
 324 %  description of the format.
 325 %
 326 %  The format of the RegisterWEBPImage method is:
 327 %
 328 %      size_t RegisterWEBPImage(void)
 329 %
 330 */
 331 ModuleExport size_t RegisterWEBPImage(void)
 332 {
 333   char
 334     version[MaxTextExtent];
 335
 336   MagickInfo
 337     *entry;
 338
 339   *version='\0';
 340   entry=SetMagickInfo("WEBP");
 341 #if defined(MAGICKCORE_WEBP_DELEGATE)
 342   entry->decoder=(DecodeImageHandler *) ReadWEBPImage;
 343   entry->encoder=(EncodeImageHandler *) WriteWEBPImage;
 344   (void) FormatLocaleString(version,MaxTextExtent,"libwebp %d.%d.%d",
 345     (WebPGetDecoderVersion() >> 16) & 0xff,
 346     (WebPGetDecoderVersion() >> 8) & 0xff,
 347     (WebPGetDecoderVersion() >> 0) & 0xff);
 348 #endif
 349   entry->description=ConstantString("WebP Image Format");
 350   entry->adjoin=MagickFalse;
 351   entry->module=ConstantString("WEBP");
 352   entry->magick=(IsImageFormatHandler *) IsWEBP;
 353   if (*version != '\0')
 354     entry->version=ConstantString(version);
 355   (void) RegisterMagickInfo(entry);
 356   return(MagickImageCoderSignature);
 357 }
 358 \f
 359 /*
 360 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 361 %                                                                             %
 362 %                                                                             %
 363 %                                                                             %
 364 %   U n r e g i s t e r W E B P I m a g e                                     %
 365 %                                                                             %
 366 %                                                                             %
 367 %                                                                             %
 368 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 369 %
 370 %  UnregisterWEBPImage() removes format registrations made by the WebP module
 371 %  from the list of supported formats.
 372 %
 373 %  The format of the UnregisterWEBPImage method is:
 374 %
 375 %      UnregisterWEBPImage(void)
 376 %
 377 */
 378 ModuleExport void UnregisterWEBPImage(void)
 379 {
 380   (void) UnregisterMagickInfo("WEBP");
 381 }
 382 #if defined(MAGICKCORE_WEBP_DELEGATE)
 383 \f
 384 /*
 385 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 386 %                                                                             %
 387 %                                                                             %
 388 %                                                                             %
 389 %   W r i t e W E B P I m a g e                                               %
 390 %                                                                             %
 391 %                                                                             %
 392 %                                                                             %
 393 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 394 %
 395 %  WriteWEBPImage() writes an image in the WebP image format.
 396 %
 397 %  The format of the WriteWEBPImage method is:
 398 %
 399 %      MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
 400 %        Image *image)
 401 %
 402 %  A description of each parameter follows.
 403 %
 404 %    o image_info: the image info.
 405 %
 406 %    o image:  The image.
 407 %
 408 */
 409
 410 static int WebPWriter(const unsigned char *stream,size_t length,
 411   const WebPPicture *const picture)
 412 {
 413   Image
 414     *image;
 415
 416   image=(Image *) picture->custom_ptr;
 417   return(length != 0 ? (int) WriteBlob(image,length,stream) : 1);
 418 }
 419
 420 static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
 421   Image *image,ExceptionInfo *exception)
 422 {
 423   const char
 424     *value;
 425
 426   int
 427     webp_status;
 428
 429   MagickBooleanType
 430     status;
 431
 432   register uint32_t
 433     *restrict q;
 434
 435   ssize_t
 436     y;
 437
 438   WebPConfig
 439     configure;
 440
 441   WebPPicture
 442     picture;
 443
 444   WebPAuxStats
 445     statistics;
 446
 447   /*
 448     Open output image file.
 449   */
 450   assert(image_info != (const ImageInfo *) NULL);
 451   assert(image_info->signature == MagickSignature);
 452   assert(image != (Image *) NULL);
 453   assert(image->signature == MagickSignature);
 454   if (image->debug != MagickFalse)
 455     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 456   if ((image->columns > 16383UL) || (image->rows > 16383UL))
 457     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 458   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 459   if (status == MagickFalse)
 460     return(status);
 461   if ((WebPPictureInit(&picture) == 0) || (WebPConfigInit(&configure) == 0))
 462     ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
 463   picture.writer=WebPWriter;
 464   picture.custom_ptr=(void *) image;
 465   picture.stats=(&statistics);
 466   picture.width=(int) image->columns;
 467   picture.height=(int) image->rows;
 468   picture.argb_stride=(int) image->columns;
 469   picture.use_argb=1;
 470   if (image->quality != UndefinedCompressionQuality)
 471     configure.quality=(float) image->quality;
 472   else
 473     if (image->quality >= 100)
 474       configure.lossless=1;
 475   value=GetImageOption(image_info,"webp:lossless");
 476   if (value != (char *) NULL)
 477     configure.lossless=ParseCommandOption(MagickBooleanOptions,MagickFalse,
 478       value);
 479   value=GetImageOption(image_info,"webp:method");
 480   if (value != (char *) NULL)
 481     configure.method=StringToInteger(value);
 482   value=GetImageOption(image_info,"webp:image-hint");
 483   if (value != (char *) NULL)
 484     {
 485       if (LocaleCompare(value,"graph") == 0)
 486         configure.image_hint=WEBP_HINT_GRAPH;
 487       if (LocaleCompare(value,"photo") == 0)
 488         configure.image_hint=WEBP_HINT_PHOTO;
 489       if (LocaleCompare(value,"picture") == 0)
 490         configure.image_hint=WEBP_HINT_PICTURE;
 491     }
 492   value=GetImageOption(image_info,"webp:target-size");
 493   if (value != (char *) NULL)
 494     configure.target_size=StringToInteger(value);
 495   value=GetImageOption(image_info,"webp:target-psnr");
 496   if (value != (char *) NULL)
 497     configure.target_PSNR=(float) StringToDouble(value,(char **) NULL);
 498   value=GetImageOption(image_info,"webp:segments");
 499   if (value != (char *) NULL)
 500     configure.segments=StringToInteger(value);
 501   value=GetImageOption(image_info,"webp:sns-strength");
 502   if (value != (char *) NULL)
 503     configure.sns_strength=StringToInteger(value);
 504   value=GetImageOption(image_info,"webp:filter-strength");
 505   if (value != (char *) NULL)
 506     configure.filter_strength=StringToInteger(value);
 507   value=GetImageOption(image_info,"webp:filter-sharpness");
 508   if (value != (char *) NULL)
 509     configure.filter_sharpness=StringToInteger(value);
 510   value=GetImageOption(image_info,"webp:filter-type");
 511   if (value != (char *) NULL)
 512     configure.filter_type=StringToInteger(value);
 513   value=GetImageOption(image_info,"webp:auto-filter");
 514   if (value != (char *) NULL)
 515     configure.autofilter=ParseCommandOption(MagickBooleanOptions,MagickFalse,
 516       value);
 517   value=GetImageOption(image_info,"webp:alpha-compression");
 518   if (value != (char *) NULL)
 519     configure.alpha_compression=StringToInteger(value);
 520   value=GetImageOption(image_info,"webp:alpha-filtering");
 521   if (value != (char *) NULL)
 522     configure.alpha_filtering=StringToInteger(value);
 523   value=GetImageOption(image_info,"webp:alpha-quality");
 524   if (value != (char *) NULL)
 525     configure.alpha_quality=StringToInteger(value);
 526   value=GetImageOption(image_info,"webp:pass");
 527   if (value != (char *) NULL)
 528     configure.pass=StringToInteger(value);
 529   value=GetImageOption(image_info,"webp:show-compressed");
 530   if (value != (char *) NULL)
 531     configure.show_compressed=StringToInteger(value);
 532   value=GetImageOption(image_info,"webp:preprocessing");
 533   if (value != (char *) NULL)
 534     configure.preprocessing=StringToInteger(value);
 535   value=GetImageOption(image_info,"webp:partitions");
 536   if (value != (char *) NULL)
 537     configure.partitions=StringToInteger(value);
 538   value=GetImageOption(image_info,"webp:partition-limit");
 539   if (value != (char *) NULL)
 540     configure.partition_limit=StringToInteger(value);
 541   if (WebPValidateConfig(&configure) == 0)
 542     ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
 543   /*
 544     Allocate memory for pixels.
 545   */
 546   picture.argb=(uint32_t *) AcquireQuantumMemory(image->columns,image->rows*
 547     sizeof(*picture.argb));
 548   if (picture.argb == (uint32_t *) NULL)
 549     ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 550   /*
 551     Convert image to WebP raster pixels.
 552   */
 553   q=picture.argb;
 554   for (y=0; y < (ssize_t) image->rows; y++)
 555   {
 556     register const Quantum
 557       *restrict p;
 558
 559     register ssize_t
 560       x;
 561
 562     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 563     if (p == (const Quantum *) NULL)
 564       break;
 565     for (x=0; x < (ssize_t) image->columns; x++)
 566     {
 567       *q++=(uint32_t) (image->alpha_trait == BlendPixelTrait ?
 568         ScaleQuantumToChar(GetPixelAlpha(image,p)) << 24 : 0xff000000u) |
 569         (ScaleQuantumToChar(GetPixelRed(image,p)) << 16) |
 570         (ScaleQuantumToChar(GetPixelGreen(image,p)) << 8) |
 571         (ScaleQuantumToChar(GetPixelBlue(image,p)));
 572       p+=GetPixelChannels(image);
 573     }
 574     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 575       image->rows);
 576     if (status == MagickFalse)
 577       break;
 578   }
 579   webp_status=WebPEncode(&configure,&picture);
 580   WebPPictureFree(&picture);
 581   picture.argb=(uint32_t *) RelinquishMagickMemory(picture.argb);
 582   (void) CloseBlob(image);
 583   return(webp_status == 0 ? MagickFalse : MagickTrue);
 584 }
 585 #endif