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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                            EEEEE  M   M  FFFFF                              %
   7 %                            E      MM MM  F                                  %
   8 %                            EEE    M M M  FFF                                %
   9 %                            E      M   M  F                                  %
  10 %                            EEEEE  M   M  F                                  %
  11 %                                                                             %
  12 %                                                                             %
  13 %                  Read Windows Enahanced Metafile Format                     %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                              Bill Radcliffe                                 %
  17 %                                   2001                                      %
  18 %                                                                             %
  19 %  Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization      %
  20 %  dedicated to making software imaging solutions freely available.           %
  21 %                                                                             %
  22 %  You may not use this file except in compliance with the License.  You may  %
  23 %  obtain a copy of the License at                                            %
  24 %                                                                             %
  25 %    http://www.imagemagick.org/script/license.php                            %
  26 %                                                                             %
  27 %  Unless required by applicable law or agreed to in writing, software        %
  28 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  29 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  30 %  See the License for the specific language governing permissions and        %
  31 %  limitations under the License.                                             %
  32 %                                                                             %
  33 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  34 */
  35 \f
  36 /*
  37  * Include declarations.
  38  */
  39
  40 #include "MagickCore/studio.h"
  41 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
  42 #  if defined(__CYGWIN__)
  43 #    include <windows.h>
  44 #  else
  45 #    include <wingdi.h>
  46 #  endif
  47 #endif
  48 \f
  49 #include "MagickCore/blob.h"
  50 #include "MagickCore/blob-private.h"
  51 #include "MagickCore/cache.h"
  52 #include "MagickCore/exception.h"
  53 #include "MagickCore/exception-private.h"
  54 #include "MagickCore/geometry.h"
  55 #include "MagickCore/image.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/pixel.h"
  61 #include "MagickCore/pixel-accessor.h"
  62 #include "MagickCore/quantum-private.h"
  63 #include "MagickCore/static.h"
  64 #include "MagickCore/string_.h"
  65 #include "MagickCore/module.h"
  66 \f
  67 /*
  68 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  69 %                                                                             %
  70 %                                                                             %
  71 %                                                                             %
  72 %   I s E F M                                                                 %
  73 %                                                                             %
  74 %                                                                             %
  75 %                                                                             %
  76 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  77 %
  78 %  IsEMF() returns MagickTrue if the image format type, identified by the
  79 %  magick string, is a Microsoft Windows Enhanced MetaFile (EMF) file.
  80 %
  81 %  The format of the ReadEMFImage method is:
  82 %
  83 %      MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
  84 %
  85 %  A description of each parameter follows:
  86 %
  87 %    o magick: compare image format pattern against these bytes.
  88 %
  89 %    o length: Specifies the length of the magick string.
  90 %
  91 */
  92 static MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
  93 {
  94   if (length < 48)
  95     return(MagickFalse);
  96   if (memcmp(magick+40,"\040\105\115\106\000\000\001\000",8) == 0)
  97     return(MagickTrue);
  98   return(MagickFalse);
  99 }
 100 \f
 101 /*
 102 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 103 %                                                                             %
 104 %                                                                             %
 105 %                                                                             %
 106 %   I s W M F                                                                 %
 107 %                                                                             %
 108 %                                                                             %
 109 %                                                                             %
 110 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 111 %
 112 %  IsWMF() returns MagickTrue if the image format type, identified by the
 113 %  magick string, is a Windows MetaFile (WMF) file.
 114 %
 115 %  The format of the ReadEMFImage method is:
 116 %
 117 %      MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
 118 %
 119 %  A description of each parameter follows:
 120 %
 121 %    o magick: compare image format pattern against these bytes.
 122 %
 123 %    o length: Specifies the length of the magick string.
 124 %
 125 */
 126 static MagickBooleanType IsWMF(const unsigned char *magick,const size_t length)
 127 {
 128   if (length < 4)
 129     return(MagickFalse);
 130   if (memcmp(magick,"\327\315\306\232",4) == 0)
 131     return(MagickTrue);
 132   if (memcmp(magick,"\001\000\011\000",4) == 0)
 133     return(MagickTrue);
 134   return(MagickFalse);
 135 }
 136 \f
 137 /*
 138 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 139 %                                                                             %
 140 %                                                                             %
 141 %                                                                             %
 142 %  R e a d E M F I m a g e                                                    %
 143 %                                                                             %
 144 %                                                                             %
 145 %                                                                             %
 146 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 147 %
 148 %  ReadEMFImage() reads an Microsoft Windows Enhanced MetaFile (EMF) or
 149 %  Windows MetaFile (WMF) file using the Windows API and returns it.  It
 150 %  allocates the memory necessary for the new Image structure and returns a
 151 %  pointer to the new image.
 152 %
 153 %  The format of the ReadEMFImage method is:
 154 %
 155 %      Image *ReadEMFImage(const ImageInfo *image_info,
 156 %        ExceptionInfo *exception)
 157 %
 158 %  A description of each parameter follows:
 159 %
 160 %    o image_info: the image info..
 161 %
 162 %    o exception: return any errors or warnings in this structure.
 163 %
 164 */
 165
 166
 167 #if defined(MAGICKCORE_HAVE__WFOPEN)
 168 static size_t UTF8ToUTF16(const unsigned char *utf8,wchar_t *utf16)
 169 {
 170   register const unsigned char
 171     *p;
 172
 173   if (utf16 != (wchar_t *) NULL)
 174     {
 175       register wchar_t
 176         *q;
 177
 178       wchar_t
 179         c;
 180
 181       /*
 182         Convert UTF-8 to UTF-16.
 183       */
 184       q=utf16;
 185       for (p=utf8; *p != '\0'; p++)
 186       {
 187         if ((*p & 0x80) == 0)
 188           *q=(*p);
 189         else
 190           if ((*p & 0xE0) == 0xC0)
 191             {
 192               c=(*p);
 193               *q=(c & 0x1F) << 6;
 194               p++;
 195               if ((*p & 0xC0) != 0x80)
 196                 return(0);
 197               *q|=(*p & 0x3F);
 198             }
 199           else
 200             if ((*p & 0xF0) == 0xE0)
 201               {
 202                 c=(*p);
 203                 *q=c << 12;
 204                 p++;
 205                 if ((*p & 0xC0) != 0x80)
 206                   return(0);
 207                 c=(*p);
 208                 *q|=(c & 0x3F) << 6;
 209                 p++;
 210                 if ((*p & 0xC0) != 0x80)
 211                   return(0);
 212                 *q|=(*p & 0x3F);
 213               }
 214             else
 215               return(0);
 216         q++;
 217       }
 218       *q++='\0';
 219       return(q-utf16);
 220     }
 221   /*
 222     Compute UTF-16 string length.
 223   */
 224   for (p=utf8; *p != '\0'; p++)
 225   {
 226     if ((*p & 0x80) == 0)
 227       ;
 228     else
 229       if ((*p & 0xE0) == 0xC0)
 230         {
 231           p++;
 232           if ((*p & 0xC0) != 0x80)
 233             return(0);
 234         }
 235       else
 236         if ((*p & 0xF0) == 0xE0)
 237           {
 238             p++;
 239             if ((*p & 0xC0) != 0x80)
 240               return(0);
 241             p++;
 242             if ((*p & 0xC0) != 0x80)
 243               return(0);
 244          }
 245        else
 246          return(0);
 247   }
 248   return(p-utf8);
 249 }
 250
 251 static wchar_t *ConvertUTF8ToUTF16(const unsigned char *source)
 252 {
 253   size_t
 254     length;
 255
 256   wchar_t
 257     *utf16;
 258
 259   length=UTF8ToUTF16(source,(wchar_t *) NULL);
 260   if (length == 0)
 261     {
 262       register ssize_t
 263         i;
 264
 265       /*
 266         Not UTF-8, just copy.
 267       */
 268       length=strlen((char *) source);
 269       utf16=(wchar_t *) AcquireQuantumMemory(length+1,sizeof(*utf16));
 270       if (utf16 == (wchar_t *) NULL)
 271         return((wchar_t *) NULL);
 272       for (i=0; i <= (ssize_t) length; i++)
 273         utf16[i]=source[i];
 274       return(utf16);
 275     }
 276   utf16=(wchar_t *) AcquireQuantumMemory(length+1,sizeof(*utf16));
 277   if (utf16 == (wchar_t *) NULL)
 278     return((wchar_t *) NULL);
 279   length=UTF8ToUTF16(source,utf16);
 280   return(utf16);
 281 }
 282 #endif
 283
 284 /*
 285   This method reads either an enhanced metafile, a regular 16bit Windows
 286   metafile, or an Aldus Placeable metafile and converts it into an enhanced
 287   metafile.  Width and height are returned in .01mm units.
 288 */
 289 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
 290 static HENHMETAFILE ReadEnhMetaFile(const char *path,ssize_t *width,
 291   ssize_t *height)
 292 {
 293 #pragma pack( push, 2 )
 294   typedef struct
 295   {
 296     DWORD dwKey;
 297     WORD hmf;
 298     SMALL_RECT bbox;
 299     WORD wInch;
 300     DWORD dwReserved;
 301     WORD wCheckSum;
 302   } APMHEADER, *PAPMHEADER;
 303 #pragma pack( pop )
 304
 305   DWORD
 306     dwSize;
 307
 308   ENHMETAHEADER
 309     emfh;
 310
 311   HANDLE
 312     hFile;
 313
 314   HDC
 315     hDC;
 316
 317   HENHMETAFILE
 318     hTemp;
 319
 320   LPBYTE
 321     pBits;
 322
 323   METAFILEPICT
 324     mp;
 325
 326   HMETAFILE
 327     hOld;
 328
 329   *width=512;
 330   *height=512;
 331   hTemp=GetEnhMetaFile(path);
 332 #if defined(MAGICKCORE_HAVE__WFOPEN)
 333   if (hTemp == (HENHMETAFILE) NULL)
 334     {
 335       wchar_t
 336         *unicode_path;
 337
 338       unicode_path=ConvertUTF8ToUTF16((const unsigned char *) path);
 339       if (unicode_path != (wchar_t *) NULL)
 340         {
 341           hTemp=GetEnhMetaFileW(unicode_path);
 342           unicode_path=(wchar_t *) RelinquishMagickMemory(unicode_path);
 343         }
 344     }
 345 #endif
 346   if (hTemp != (HENHMETAFILE) NULL)
 347     {
 348       /*
 349         Enhanced metafile.
 350       */
 351       GetEnhMetaFileHeader(hTemp,sizeof(ENHMETAHEADER),&emfh);
 352       *width=emfh.rclFrame.right-emfh.rclFrame.left;
 353       *height=emfh.rclFrame.bottom-emfh.rclFrame.top;
 354       return(hTemp);
 355     }
 356   hOld=GetMetaFile(path);
 357   if (hOld != (HMETAFILE) NULL)
 358     {
 359       /*
 360         16bit windows metafile.
 361       */
 362       dwSize=GetMetaFileBitsEx(hOld,0,NULL);
 363       if (dwSize == 0)
 364         {
 365           DeleteMetaFile(hOld);
 366           return((HENHMETAFILE) NULL);
 367         }
 368       pBits=(LPBYTE) AcquireQuantumMemory(dwSize,sizeof(*pBits));
 369       if (pBits == (LPBYTE) NULL)
 370         {
 371           DeleteMetaFile(hOld);
 372           return((HENHMETAFILE) NULL);
 373         }
 374       if (GetMetaFileBitsEx(hOld,dwSize,pBits) == 0)
 375         {
 376           pBits=(BYTE *) DestroyString((char *) pBits);
 377           DeleteMetaFile(hOld);
 378           return((HENHMETAFILE) NULL);
 379         }
 380       /*
 381         Make an enhanced metafile from the windows metafile.
 382       */
 383       mp.mm=MM_ANISOTROPIC;
 384       mp.xExt=1000;
 385       mp.yExt=1000;
 386       mp.hMF=NULL;
 387       hDC=GetDC(NULL);
 388       hTemp=SetWinMetaFileBits(dwSize,pBits,hDC,&mp);
 389       ReleaseDC(NULL,hDC);
 390       DeleteMetaFile(hOld);
 391       pBits=(BYTE *) DestroyString((char *) pBits);
 392       GetEnhMetaFileHeader(hTemp,sizeof(ENHMETAHEADER),&emfh);
 393       *width=emfh.rclFrame.right-emfh.rclFrame.left;
 394       *height=emfh.rclFrame.bottom-emfh.rclFrame.top;
 395       return(hTemp);
 396     }
 397   /*
 398     Aldus Placeable metafile.
 399   */
 400   hFile=CreateFile(path,GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,
 401     NULL);
 402   if (hFile == INVALID_HANDLE_VALUE)
 403     return(NULL);
 404   dwSize=GetFileSize(hFile,NULL);
 405   pBits=(LPBYTE) AcquireQuantumMemory(dwSize,sizeof(*pBits));
 406   ReadFile(hFile,pBits,dwSize,&dwSize,NULL);
 407   CloseHandle(hFile);
 408   if (((PAPMHEADER) pBits)->dwKey != 0x9ac6cdd7l)
 409     {
 410       pBits=(BYTE *) DestroyString((char *) pBits);
 411       return((HENHMETAFILE) NULL);
 412     }
 413   /*
 414     Make an enhanced metafile from the placable metafile.
 415   */
 416   mp.mm=MM_ANISOTROPIC;
 417   mp.xExt=((PAPMHEADER) pBits)->bbox.Right-((PAPMHEADER) pBits)->bbox.Left;
 418   *width=mp.xExt;
 419   mp.xExt=(mp.xExt*2540l)/(DWORD) (((PAPMHEADER) pBits)->wInch);
 420   mp.yExt=((PAPMHEADER)pBits)->bbox.Bottom-((PAPMHEADER) pBits)->bbox.Top;
 421   *height=mp.yExt;
 422   mp.yExt=(mp.yExt*2540l)/(DWORD) (((PAPMHEADER) pBits)->wInch);
 423   mp.hMF=NULL;
 424   hDC=GetDC(NULL);
 425   hTemp=SetWinMetaFileBits(dwSize,&(pBits[sizeof(APMHEADER)]),hDC,&mp);
 426   ReleaseDC(NULL,hDC);
 427   pBits=(BYTE *) DestroyString((char *) pBits);
 428   return(hTemp);
 429 }
 430
 431 #define CENTIMETERS_INCH 2.54
 432
 433 static Image *ReadEMFImage(const ImageInfo *image_info,
 434   ExceptionInfo *exception)
 435 {
 436   BITMAPINFO
 437     DIBinfo;
 438
 439   HBITMAP
 440     hBitmap,
 441     hOldBitmap;
 442
 443   HDC
 444     hDC;
 445
 446   HENHMETAFILE
 447     hemf;
 448
 449   Image
 450     *image;
 451
 452   RECT
 453     rect;
 454
 455   register ssize_t
 456     x;
 457
 458   register Quantum
 459     *q;
 460
 461   RGBQUAD
 462     *pBits,
 463     *ppBits;
 464
 465   ssize_t
 466     height,
 467     width,
 468     y;
 469
 470   image=AcquireImage(image_info,exception);
 471   hemf=ReadEnhMetaFile(image_info->filename,&width,&height);
 472   if (hemf == (HENHMETAFILE) NULL)
 473     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 474   if ((image->columns == 0) || (image->rows == 0))
 475     {
 476       double
 477         y_resolution,
 478         x_resolution;
 479
 480       y_resolution=DefaultResolution;
 481       x_resolution=DefaultResolution;
 482       if (image->resolution.y > 0)
 483         {
 484           y_resolution=image->resolution.y;
 485           if (image->units == PixelsPerCentimeterResolution)
 486             y_resolution*=CENTIMETERS_INCH;
 487         }
 488       if (image->resolution.x > 0)
 489         {
 490           x_resolution=image->resolution.x;
 491           if (image->units == PixelsPerCentimeterResolution)
 492             x_resolution*=CENTIMETERS_INCH;
 493         }
 494       image->rows=(size_t) ((height/1000.0/CENTIMETERS_INCH)*y_resolution+0.5);
 495       image->columns=(size_t) ((width/1000.0/CENTIMETERS_INCH)*
 496         x_resolution+0.5);
 497     }
 498   if (image_info->size != (char *) NULL)
 499     {
 500       ssize_t
 501         x;
 502
 503       image->columns=width;
 504       image->rows=height;
 505       x=0;
 506       y=0;
 507       (void) GetGeometry(image_info->size,&x,&y,&image->columns,&image->rows);
 508     }
 509   if (image_info->page != (char *) NULL)
 510     {
 511       char
 512         *geometry;
 513
 514       register char
 515         *p;
 516
 517       MagickStatusType
 518         flags;
 519
 520       ssize_t
 521         sans;
 522
 523       geometry=GetPageGeometry(image_info->page);
 524       p=strchr(geometry,'>');
 525       if (p == (char *) NULL)
 526         {
 527           flags=ParseMetaGeometry(geometry,&sans,&sans,&image->columns,
 528             &image->rows);
 529           if (image->resolution.x != 0.0)
 530             image->columns=(size_t) floor((image->columns*image->resolution.x)+
 531               0.5);
 532           if (image->resolution.y != 0.0)
 533             image->rows=(size_t) floor((image->rows*image->resolution.y)+0.5);
 534         }
 535       else
 536         {
 537           *p='\0';
 538           flags=ParseMetaGeometry(geometry,&sans,&sans,&image->columns,
 539             &image->rows);
 540           if (image->resolution.x != 0.0)
 541             image->columns=(size_t) floor(((image->columns*image->resolution.x)/
 542               DefaultResolution)+0.5);
 543           if (image->resolution.y != 0.0)
 544             image->rows=(size_t) floor(((image->rows*image->resolution.y)/
 545               DefaultResolution)+0.5);
 546         }
 547       geometry=DestroyString(geometry);
 548     }
 549   hDC=GetDC(NULL);
 550   if (hDC == (HDC) NULL)
 551     {
 552       DeleteEnhMetaFile(hemf);
 553       ThrowReaderException(ResourceLimitError,"UnableToCreateADC");
 554     }
 555   /*
 556     Initialize the bitmap header info.
 557   */
 558   (void) ResetMagickMemory(&DIBinfo,0,sizeof(BITMAPINFO));
 559   DIBinfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
 560   DIBinfo.bmiHeader.biWidth=(LONG) image->columns;
 561   DIBinfo.bmiHeader.biHeight=(-1)*(LONG) image->rows;
 562   DIBinfo.bmiHeader.biPlanes=1;
 563   DIBinfo.bmiHeader.biBitCount=32;
 564   DIBinfo.bmiHeader.biCompression=BI_RGB;
 565   hBitmap=CreateDIBSection(hDC,&DIBinfo,DIB_RGB_COLORS,(void **) &ppBits,NULL,
 566     0);
 567   ReleaseDC(NULL,hDC);
 568   if (hBitmap == (HBITMAP) NULL)
 569     {
 570       DeleteEnhMetaFile(hemf);
 571       ThrowReaderException(ResourceLimitError,"UnableToCreateBitmap");
 572     }
 573   hDC=CreateCompatibleDC(NULL);
 574   if (hDC == (HDC) NULL)
 575     {
 576       DeleteEnhMetaFile(hemf);
 577       DeleteObject(hBitmap);
 578       ThrowReaderException(ResourceLimitError,"UnableToCreateADC");
 579     }
 580   hOldBitmap=(HBITMAP) SelectObject(hDC,hBitmap);
 581   if (hOldBitmap == (HBITMAP) NULL)
 582     {
 583       DeleteEnhMetaFile(hemf);
 584       DeleteDC(hDC);
 585       DeleteObject(hBitmap);
 586       ThrowReaderException(ResourceLimitError,"UnableToCreateBitmap");
 587     }
 588   /*
 589     Initialize the bitmap to the image background color.
 590   */
 591   pBits=ppBits;
 592   for (y=0; y < (ssize_t) image->rows; y++)
 593   {
 594     for (x=0; x < (ssize_t) image->columns; x++)
 595     {
 596       pBits->rgbRed=ScaleQuantumToChar(image->background_color.red);
 597       pBits->rgbGreen=ScaleQuantumToChar(image->background_color.green);
 598       pBits->rgbBlue=ScaleQuantumToChar(image->background_color.blue);
 599       pBits++;
 600     }
 601   }
 602   rect.top=0;
 603   rect.left=0;
 604   rect.right=(LONG) image->columns;
 605   rect.bottom=(LONG) image->rows;
 606   /*
 607     Convert metafile pixels.
 608   */
 609   PlayEnhMetaFile(hDC,hemf,&rect);
 610   pBits=ppBits;
 611   for (y=0; y < (ssize_t) image->rows; y++)
 612   {
 613     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 614     if (q == (Quantum *) NULL)
 615       break;
 616     for (x=0; x < (ssize_t) image->columns; x++)
 617     {
 618       SetPixelRed(image,ScaleCharToQuantum(pBits->rgbRed),q);
 619       SetPixelGreen(image,ScaleCharToQuantum(pBits->rgbGreen),q);
 620       SetPixelBlue(image,ScaleCharToQuantum(pBits->rgbBlue),q);
 621       SetPixelAlpha(image,OpaqueAlpha,q);
 622       pBits++;
 623       q+=GetPixelChannels(image);
 624     }
 625     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 626       break;
 627   }
 628   DeleteEnhMetaFile(hemf);
 629   SelectObject(hDC,hOldBitmap);
 630   DeleteDC(hDC);
 631   DeleteObject(hBitmap);
 632   return(GetFirstImageInList(image));
 633 }
 634 #endif /* MAGICKCORE_WINGDI32_DELEGATE */
 635 \f
 636 /*
 637 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 638 %                                                                             %
 639 %                                                                             %
 640 %                                                                             %
 641 %   R e g i s t e r E M F I m a g e                                           %
 642 %                                                                             %
 643 %                                                                             %
 644 %                                                                             %
 645 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 646 %
 647 %  RegisterEMFImage() adds attributes for the EMF image format to
 648 %  the list of supported formats.  The attributes include the image format
 649 %  tag, a method to read and/or write the format, whether the format
 650 %  supports the saving of more than one frame to the same file or blob,
 651 %  whether the format supports native in-memory I/O, and a brief
 652 %  description of the format.
 653 %
 654 %  The format of the RegisterEMFImage method is:
 655 %
 656 %      size_t RegisterEMFImage(void)
 657 %
 658 */
 659 ModuleExport size_t RegisterEMFImage(void)
 660 {
 661   MagickInfo
 662     *entry;
 663
 664   entry=SetMagickInfo("EMF");
 665 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
 666   entry->decoder=ReadEMFImage;
 667 #endif
 668   entry->description=ConstantString(
 669     "Windows WIN32 API rendered Enhanced Meta File");
 670   entry->magick=(IsImageFormatHandler *) IsEMF;
 671   entry->blob_support=MagickFalse;
 672   entry->module=ConstantString("WMF");
 673   (void) RegisterMagickInfo(entry);
 674   entry=SetMagickInfo("WMFWIN32");
 675 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
 676   entry->decoder=ReadEMFImage;
 677 #endif
 678   entry->description=ConstantString("Windows WIN32 API rendered Meta File");
 679   entry->magick=(IsImageFormatHandler *) IsWMF;
 680   entry->blob_support=MagickFalse;
 681   entry->module=ConstantString("WMFWIN32");
 682   (void) RegisterMagickInfo(entry);
 683   return(MagickImageCoderSignature);
 684 }
 685 \f
 686 /*
 687 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 688 %                                                                             %
 689 %                                                                             %
 690 %                                                                             %
 691 %   U n r e g i s t e r E M F I m a g e                                       %
 692 %                                                                             %
 693 %                                                                             %
 694 %                                                                             %
 695 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 696 %
 697 %  UnregisterEMFImage() removes format registrations made by the
 698 %  EMF module from the list of supported formats.
 699 %
 700 %  The format of the UnregisterEMFImage method is:
 701 %
 702 %      UnregisterEMFImage(void)
 703 %
 704 */
 705 ModuleExport void UnregisterEMFImage(void)
 706 {
 707   (void) UnregisterMagickInfo("EMF");
 708   (void) UnregisterMagickInfo("WMFWIN32");
 709 }