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/eps.h"
  69
  70 static Image *ReadWMFImage(const ImageInfo *image_info,ExceptionInfo *exception)
  71 {
  72   char
  73     filename[MaxTextExtent];
  74
  75   int
  76     unique_file;
  77
  78   FILE
  79     *file;
  80
  81   Image
  82     *image;
  83
  84   ImageInfo
  85     *read_info;
  86
  87   unsigned long
  88     flags;
  89
  90   wmfAPI
  91     *wmf_info;
  92
  93   wmfAPI_Options
  94     options;
  95
  96   wmfD_Rect
  97     bounding_box;
  98
  99   wmf_eps_t
 100    *eps_info;
 101
 102   wmf_error_t
 103     status;
 104
 105   image=AcquireImage(image_info);
 106   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 107   if (status == MagickFalse)
 108     {
 109       image=DestroyImageList(image);
 110       return((Image *) NULL);
 111     }
 112   wmf_info=(wmfAPI *) NULL;
 113   flags=0;
 114   flags|=WMF_OPT_IGNORE_NONFATAL;
 115   flags|=WMF_OPT_FUNCTION;
 116   options.function=wmf_eps_function;
 117   status=wmf_api_create(&wmf_info,flags,&options);
 118   if (status != wmf_E_None)
 119     {
 120       if (wmf_info != (wmfAPI *) NULL)
 121         wmf_api_destroy(wmf_info);
 122       ThrowReaderException(DelegateError,"UnableToInitializeWMFLibrary");
 123     }
 124   status=wmf_file_open(wmf_info,image->filename);
 125   if (status != wmf_E_None)
 126     {
 127       if (wmf_info != (wmfAPI *) NULL)
 128         wmf_api_destroy(wmf_info);
 129       ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
 130         image->filename);
 131       return(DestroyImageList(image));
 132     }
 133   status=wmf_scan(wmf_info,0,&bounding_box);
 134   if (status != wmf_E_None)
 135     {
 136       if (wmf_info != (wmfAPI *) NULL)
 137         wmf_api_destroy(wmf_info);
 138       ThrowReaderException(DelegateError,"FailedToScanFile");
 139     }
 140   eps_info=WMF_EPS_GetData(wmf_info);
 141   file=(FILE *) NULL;
 142   unique_file=AcquireUniqueFileResource(filename);
 143   if (unique_file != -1)
 144     file=fdopen(unique_file,"wb");
 145   if ((unique_file == -1) || (file == (FILE *) NULL))
 146     {
 147       if (wmf_info != (wmfAPI *) NULL)
 148         wmf_api_destroy(wmf_info);
 149       ThrowImageException(FileOpenError,"UnableToCreateTemporaryFile");
 150     }
 151   eps_info->out=wmf_stream_create(wmf_info,file);
 152   eps_info->bbox=bounding_box;
 153   status=wmf_play(wmf_info,0,&bounding_box);
 154   if (status != wmf_E_None)
 155     {
 156       if (wmf_info != (wmfAPI *) NULL)
 157         wmf_api_destroy(wmf_info);
 158       ThrowReaderException(DelegateError,"FailedToRenderFile");
 159     }
 160   wmf_api_destroy(wmf_info);
 161   (void) fclose(file);
 162   (void) CloseBlob(image);
 163   image=DestroyImage(image);
 164   /*
 165     Read EPS image.
 166   */
 167   read_info=CloneImageInfo(image_info);
 168   (void) FormatMagickString(read_info->filename,MaxTextExtent,"eps:%.1024s",
 169     filename);
 170   image=ReadImage(read_info,exception);
 171   read_info=DestroyImageInfo(read_info);
 172   if (image != (Image *) NULL)
 173     {
 174       (void) CopyMagickString(image->filename,image_info->filename,
 175         MaxTextExtent);
 176       (void) CopyMagickString(image->magick_filename,image_info->filename,
 177         MaxTextExtent);
 178       (void) CopyMagickString(image->magick,"WMF",MaxTextExtent);
 179     }
 180   (void) RelinquishUniqueFileResource(filename);
 181   return(GetFirstImageInList(image));
 182 }
 183 #endif
 184 \f
 185 /*
 186 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 187 %                                                                             %
 188 %                                                                             %
 189 %                                                                             %
 190 %   R e g i s t e r W M F I m a g e                                           %
 191 %                                                                             %
 192 %                                                                             %
 193 %                                                                             %
 194 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 195 %
 196 %  RegisterWMFImage() adds attributes for the WMF image format to
 197 %  the list of supported formats.  The attributes include the image format
 198 %  tag, a method to read and/or write the format, whether the format
 199 %  supports the saving of more than one frame to the same file or blob,
 200 %  whether the format supports native in-memory I/O, and a brief
 201 %  description of the format.
 202 %
 203 %  The format of the RegisterWMFImage method is:
 204 %
 205 %      unsigned long RegisterWMFImage(void)
 206 %
 207 */
 208 ModuleExport unsigned long RegisterWMFImage(void)
 209 {
 210   MagickInfo
 211     *entry;
 212
 213   entry = SetMagickInfo("WMZ");
 214 #if defined(MAGICKCORE_WMF_DELEGATE)
 215   entry->decoder=ReadWMFImage;
 216 #endif
 217   entry->description=ConstantString("Compressed Windows Meta File");
 218   entry->blob_support=MagickFalse;
 219   entry->module=ConstantString("WMZ");
 220   (void) RegisterMagickInfo(entry);
 221   entry=SetMagickInfo("WMF");
 222 #if defined(MAGICKCORE_WMF_DELEGATE)
 223   entry->decoder=ReadWMFImage;
 224 #endif
 225   entry->description=ConstantString("Windows Meta File");
 226   entry->blob_support=MagickFalse;
 227   entry->module=ConstantString("WMF");
 228   (void) RegisterMagickInfo(entry);
 229   return(MagickImageCoderSignature);
 230 }
 231 \f
 232 /*
 233 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 234 %                                                                             %
 235 %                                                                             %
 236 %                                                                             %
 237 %   U n r e g i s t e r W M F I m a g e                                       %
 238 %                                                                             %
 239 %                                                                             %
 240 %                                                                             %
 241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 242 %
 243 %  UnregisterWMFImage() removes format registrations made by the
 244 %  WMF module from the list of supported formats.
 245 %
 246 %  The format of the UnregisterWMFImage method is:
 247 %
 248 %      UnregisterWMFImage(void)
 249 %
 250 */
 251 ModuleExport void UnregisterWMFImage(void)
 252 {
 253   (void) UnregisterMagickInfo("WMZ");
 254   (void) UnregisterMagickInfo("WMF");
 255 }