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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                        IIIII  N   N  FFFFF   OOO                            %
   7 %                          I    NN  N  F      O   O                           %
   8 %                          I    N N N  FFF    O   O                           %
   9 %                          I    N  NN  F      O   O                           %
  10 %                        IIIII  N   N  F       OOO                            %
  11 %                                                                             %
  12 %                                                                             %
  13 %                         Write Info About the Image.                         %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                   Cristy                                    %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2014 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/artifact.h"
  44 #include "MagickCore/blob.h"
  45 #include "MagickCore/blob-private.h"
  46 #include "MagickCore/colorspace.h"
  47 #include "MagickCore/exception.h"
  48 #include "MagickCore/exception-private.h"
  49 #include "MagickCore/identify.h"
  50 #include "MagickCore/image.h"
  51 #include "MagickCore/image-private.h"
  52 #include "MagickCore/list.h"
  53 #include "MagickCore/magick.h"
  54 #include "MagickCore/memory_.h"
  55 #include "MagickCore/monitor.h"
  56 #include "MagickCore/monitor-private.h"
  57 #include "MagickCore/option.h"
  58 #include "MagickCore/property.h"
  59 #include "MagickCore/quantum-private.h"
  60 #include "MagickCore/static.h"
  61 #include "MagickCore/string_.h"
  62 #include "MagickCore/module.h"
  63 #include "MagickCore/utility.h"
  64 \f
  65 /*
  66   Forward declarations.
  67 */
  68 static MagickBooleanType
  69   WriteINFOImage(const ImageInfo *,Image *,ExceptionInfo *);
  70 \f
  71 /*
  72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  73 %                                                                             %
  74 %                                                                             %
  75 %                                                                             %
  76 %   R e g i s t e r I N F O I m a g e                                         %
  77 %                                                                             %
  78 %                                                                             %
  79 %                                                                             %
  80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  81 %
  82 %  RegisterINFOImage() adds attributes for the INFO image format to
  83 %  the list of supported formats.  The attributes include the image format
  84 %  tag, a method to read and/or write the format, whether the format
  85 %  supports the saving of more than one frame to the same file or blob,
  86 %  whether the format supports native in-memory I/O, and a brief
  87 %  description of the format.
  88 %
  89 %  The format of the RegisterINFOImage method is:
  90 %
  91 %      size_t RegisterINFOImage(void)
  92 %
  93 */
  94 ModuleExport size_t RegisterINFOImage(void)
  95 {
  96   MagickInfo
  97     *entry;
  98
  99   entry=SetMagickInfo("INFO");
 100   entry->encoder=(EncodeImageHandler *) WriteINFOImage;
 101   entry->blob_support=MagickFalse;
 102   entry->description=ConstantString("The image format and characteristics");
 103   entry->module=ConstantString("INFO");
 104   (void) RegisterMagickInfo(entry);
 105   return(MagickImageCoderSignature);
 106 }
 107 \f
 108 /*
 109 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 110 %                                                                             %
 111 %                                                                             %
 112 %                                                                             %
 113 %   U n r e g i s t e r I N F O I m a g e                                     %
 114 %                                                                             %
 115 %                                                                             %
 116 %                                                                             %
 117 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 118 %
 119 %  UnregisterINFOImage() removes format registrations made by the
 120 %  INFO module from the list of supported formats.
 121 %
 122 %  The format of the UnregisterINFOImage method is:
 123 %
 124 %      UnregisterINFOImage(void)
 125 %
 126 */
 127 ModuleExport void UnregisterINFOImage(void)
 128 {
 129   (void) UnregisterMagickInfo("INFO");
 130 }
 131 \f
 132 /*
 133 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 134 %                                                                             %
 135 %                                                                             %
 136 %                                                                             %
 137 %   W r i t e I N F O I m a g e                                               %
 138 %                                                                             %
 139 %                                                                             %
 140 %                                                                             %
 141 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 142 %
 143 %  WriteINFOImage writes the pixel values as text numbers.
 144 %
 145 %  The format of the WriteINFOImage method is:
 146 %
 147 %      MagickBooleanType WriteINFOImage(const ImageInfo *image_info,
 148 %        Image *image,ExceptionInfo *exception)
 149 %
 150 %  A description of each parameter follows.
 151 %
 152 %    o image_info: the image info.
 153 %
 154 %    o image:  The image.
 155 %
 156 %    o exception: return any errors or warnings in this structure.
 157 %
 158 */
 159 static MagickBooleanType WriteINFOImage(const ImageInfo *image_info,
 160   Image *image,ExceptionInfo *exception)
 161 {
 162   const char
 163     *format;
 164
 165   MagickBooleanType
 166     status;
 167
 168   MagickOffsetType
 169     scene;
 170
 171   /*
 172     Open output image file.
 173   */
 174   assert(image_info != (const ImageInfo *) NULL);
 175   assert(image_info->signature == MagickSignature);
 176   assert(image != (Image *) NULL);
 177   assert(image->signature == MagickSignature);
 178   if (image->debug != MagickFalse)
 179     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 180   status=OpenBlob(image_info,image,WriteBlobMode,exception);
 181   if (status == MagickFalse)
 182     return(status);
 183   scene=0;
 184   do
 185   {
 186     format=GetImageOption(image_info,"format");
 187     if (format == (char *) NULL)
 188       {
 189         (void) CopyMagickString(image->filename,image->magick_filename,
 190           MaxTextExtent);
 191         image->magick_columns=image->columns;
 192         image->magick_rows=image->rows;
 193         (void) IdentifyImage(image,GetBlobFileHandle(image),
 194           image_info->verbose,exception);
 195       }
 196     else
 197       {
 198         char
 199           *text;
 200
 201         text=InterpretImageProperties((ImageInfo *) image_info,image,format,
 202           exception);
 203         if (text != (char *) NULL)
 204           {
 205             (void) WriteBlobString(image,text);
 206             text=DestroyString(text);
 207           }
 208       }
 209     if (GetNextImageInList(image) == (Image *) NULL)
 210       break;
 211     image=SyncNextImageInList(image);
 212     status=SetImageProgress(image,SaveImagesTag,scene++,
 213       GetImageListLength(image));
 214     if (status == MagickFalse)
 215       break;
 216   } while (image_info->adjoin != MagickFalse);
 217   (void) CloseBlob(image);
 218   return(MagickTrue);
 219 }