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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                             W   W   M   M  FFFFF                            %
   7 %                             W   W   MM MM  F                                %
   8 %                             W W W   M M M  FFF                              %
   9 %                             WW WW   M   M  F                                %
  10 %                             W   W   M   M  F                                %
  11 %                                                                             %
  12 %                                                                             %
  13 %                        Read Windows Metafile Format                         %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                               December 2000                                 %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2010 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 \f
  37 /*
  38   Include declarations.
  39 */
  40 #include "magick/studio.h"
  41 #include "magick/property.h"
  42 #include "magick/blob.h"
  43 #include "magick/blob-private.h"
  44 #include "magick/color.h"
  45 #include "magick/color-private.h"
  46 #include "magick/constitute.h"
  47 #include "magick/exception.h"
  48 #include "magick/exception-private.h"
  49 #include "magick/image.h"
  50 #include "magick/image-private.h"
  51 #include "magick/list.h"
  52 #include "magick/log.h"
  53 #include "magick/magick.h"
  54 #include "magick/memory_.h"
  55 #include "magick/monitor.h"
  56 #include "magick/monitor-private.h"
  57 #include "magick/paint.h"
  58 #include "magick/quantum-private.h"
  59 #include "magick/static.h"
  60 #include "magick/string_.h"
  61 #include "magick/module.h"
  62 #include "magick/type.h"
  63 #include "magick/module.h"
  64 #include "wand/MagickWand.h"
  65
  66 #if defined(MAGICKCORE_WMF_DELEGATE)
  67 #include "libwmf/api.h"
  68 #include "libwmf/gd.h"
  69 \f
  70 /*
  71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  72 %                                                                             %
  73 %                                                                             %
  74 %                                                                             %
  75 %   R e a d W M F I m a g e                                                   %
  76 %                                                                             %
  77 %                                                                             %
  78 %                                                                             %
  79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  80 %
  81 %  ReadWMFImage() reads an Windows Metafile image file and returns it.  It
  82 %  allocates the memory necessary for the new Image structure and returns a
  83 %  pointer to the new image.
  84 %
  85 %  The format of the ReadWMFImage method is:
  86 %
  87 %      Image *ReadWMFImage(const ImageInfo *image_info,ExceptionInfo *exception)
  88 %
  89 %  A description of each parameter follows:
  90 %
  91 %    o image_info: the image info.
  92 %
  93 %    o exception: return any errors or warnings in this structure.
  94 %
  95 */
  96
  97 static int WMFReadBlob(void *image)
  98 {
  99   return(ReadBlobByte((Image *) image));
 100 }
 101
 102 static int WMFSeekBlob(void *image,long offset)
 103 {
 104   return((int) SeekBlob((Image *) image,(MagickOffsetType) offset,SEEK_SET));
 105 }
 106
 107 static long WMFTellBlob(void *image)
 108 {
 109   return((long) TellBlob((Image*) image));
 110 }
 111
 112 static Image *ReadWMFImage(const ImageInfo *image_info,ExceptionInfo *exception)
 113 {
 114   char
 115     filename[MaxTextExtent];
 116
 117   int
 118     unique_file;
 119
 120   FILE
 121     *file;
 122
 123   Image
 124     *image;
 125
 126   ImageInfo
 127     *read_info;
 128
 129   unsigned long
 130     flags;
 131
 132   wmfAPI
 133     *wmf_info;
 134
 135   wmfAPI_Options
 136     options;
 137
 138   wmfD_Rect
 139     bounding_box;
 140
 141   wmf_gd_t
 142    *gd_info;
 143
 144   wmf_error_t
 145     status;
 146
 147   /*
 148     Read WMF image.
 149   */
 150   image=AcquireImage(image_info);
 151   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 152   if (status == MagickFalse)
 153     {
 154       image=DestroyImageList(image);
 155       return((Image *) NULL);
 156     }
 157   wmf_info=(wmfAPI *) NULL;
 158   flags=0;
 159   flags|=WMF_OPT_IGNORE_NONFATAL;
 160   flags|=WMF_OPT_FUNCTION;
 161   options.function=wmf_gd_function;
 162   status=wmf_api_create(&wmf_info,flags,&options);
 163   if (status != wmf_E_None)
 164     {
 165       if (wmf_info != (wmfAPI *) NULL)
 166         wmf_api_destroy(wmf_info);
 167       ThrowReaderException(DelegateError,"UnableToInitializeWMFLibrary");
 168     }
 169   status=wmf_bbuf_input(wmf_info,WMFReadBlob,WMFSeekBlob,WMFTellBlob,
 170     (void *) image);
 171   if (status != wmf_E_None)
 172     {
 173       wmf_api_destroy(wmf_info);
 174       ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 175         image->filename);
 176       image=DestroyImageList(image);
 177       return((Image *) NULL);
 178     }
 179   status=wmf_scan(wmf_info,0,&bounding_box);
 180   if (status != wmf_E_None)
 181     {
 182       wmf_api_destroy(wmf_info);
 183       ThrowReaderException(DelegateError,"FailedToScanFile");
 184     }
 185   gd_info=WMF_GD_GetData(wmf_info);
 186   file=(FILE *) NULL;
 187   unique_file=AcquireUniqueFileResource(filename);
 188   if (unique_file != -1)
 189     file=fdopen(unique_file,"wb");
 190   if ((unique_file == -1) || (file == (FILE *) NULL))
 191     {
 192       wmf_api_destroy(wmf_info);
 193       ThrowReaderException(FileOpenError,"UnableToCreateTemporaryFile");
 194     }
 195   gd_info->flags|=WMF_GD_OUTPUT_FILE;
 196   gd_info->file=file;
 197   gd_info->bbox=bounding_box;
 198   wmf_display_size(wmf_info,&gd_info->width,&gd_info->height,
 199     ceil(image->x_resolution-0.5),ceil(image->y_resolution-0.5));
 200   status=wmf_play(wmf_info,0,&bounding_box);
 201   if (status != wmf_E_None)
 202     {
 203       wmf_api_destroy(wmf_info);
 204       ThrowReaderException(DelegateError,"FailedToRenderFile");
 205     }
 206   (void) fclose(file);
 207   wmf_api_destroy(wmf_info);
 208   (void) CloseBlob(image);
 209   image=DestroyImage(image);
 210   /*
 211     Read GD image.
 212   */
 213   read_info=CloneImageInfo(image_info);
 214   (void) FormatMagickString(read_info->filename,MaxTextExtent,"png:%.1024s",
 215     filename);
 216   image=ReadImage(read_info,exception);
 217   read_info=DestroyImageInfo(read_info);
 218   if (image != (Image *) NULL)
 219     {
 220       (void) CopyMagickString(image->filename,image_info->filename,
 221         MaxTextExtent);
 222       (void) CopyMagickString(image->magick_filename,image_info->filename,
 223         MaxTextExtent);
 224       (void) CopyMagickString(image->magick,"WMF",MaxTextExtent);
 225     }
 226   (void) RelinquishUniqueFileResource(filename);
 227   return(GetFirstImageInList(image));
 228 }
 229 #endif
 230 \f
 231 /*
 232 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 233 %                                                                             %
 234 %                                                                             %
 235 %                                                                             %
 236 %   R e g i s t e r W M F I m a g e                                           %
 237 %                                                                             %
 238 %                                                                             %
 239 %                                                                             %
 240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 241 %
 242 %  RegisterWMFImage() adds attributes for the WMF image format to
 243 %  the list of supported formats.  The attributes include the image format
 244 %  tag, a method to read and/or write the format, whether the format
 245 %  supports the saving of more than one frame to the same file or blob,
 246 %  whether the format supports native in-memory I/O, and a brief
 247 %  description of the format.
 248 %
 249 %  The format of the RegisterWMFImage method is:
 250 %
 251 %      unsigned long RegisterWMFImage(void)
 252 %
 253 */
 254 ModuleExport unsigned long RegisterWMFImage(void)
 255 {
 256   MagickInfo
 257     *entry;
 258
 259   entry = SetMagickInfo("WMZ");
 260 #if defined(MAGICKCORE_WMF_DELEGATE)
 261   entry->decoder=ReadWMFImage;
 262 #endif
 263   entry->description=ConstantString("Compressed Windows Meta File");
 264   entry->module=ConstantString("WMZ");
 265   (void) RegisterMagickInfo(entry);
 266   entry=SetMagickInfo("WMF");
 267 #if defined(MAGICKCORE_WMF_DELEGATE)
 268   entry->decoder=ReadWMFImage;
 269 #endif
 270   entry->description=ConstantString("Windows Meta File");
 271   entry->module=ConstantString("WMF");
 272   (void) RegisterMagickInfo(entry);
 273   return(MagickImageCoderSignature);
 274 }
 275 \f
 276 /*
 277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 278 %                                                                             %
 279 %                                                                             %
 280 %                                                                             %
 281 %   U n r e g i s t e r W M F I m a g e                                       %
 282 %                                                                             %
 283 %                                                                             %
 284 %                                                                             %
 285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 286 %
 287 %  UnregisterWMFImage() removes format registrations made by the
 288 %  WMF module from the list of supported formats.
 289 %
 290 %  The format of the UnregisterWMFImage method is:
 291 %
 292 %      UnregisterWMFImage(void)
 293 %
 294 */
 295 ModuleExport void UnregisterWMFImage(void)
 296 {
 297   (void) UnregisterMagickInfo("WMZ");
 298   (void) UnregisterMagickInfo("WMF");
 299 }