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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                             CCCC  IIIII  PPPP                               %
   6 %                            C        I    P   P                              %
   7 %                            C        I    PPPP                               %
   8 %                            C        I    P                                  %
   9 %                             CCCC  IIIII  P                                  %
  10 %                                                                             %
  11 %                                                                             %
  12 %                  Read/Write Cisco IP Phone Image Format                     %
  13 %                                                                             %
  14 %                              Software Design                                %
  15 %                                John Cristy                                  %
  16 %                                April 2004                                   %
  17 %                                                                             %
  18 %                                                                             %
  19 %  Copyright 1999-2012 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 %
  36 */
  37 \f
  38 /*
  39   Include declarations.
  40 */
  41 #include "MagickCore/studio.h"
  42 #include "MagickCore/blob.h"
  43 #include "MagickCore/blob-private.h"
  44 #include "MagickCore/cache.h"
  45 #include "MagickCore/color-private.h"
  46 #include "MagickCore/colorspace.h"
  47 #include "MagickCore/colorspace-private.h"
  48 #include "MagickCore/constitute.h"
  49 #include "MagickCore/exception.h"
  50 #include "MagickCore/exception-private.h"
  51 #include "MagickCore/image.h"
  52 #include "MagickCore/image-private.h"
  53 #include "MagickCore/list.h"
  54 #include "MagickCore/magick.h"
  55 #include "MagickCore/memory_.h"
  56 #include "MagickCore/monitor.h"
  57 #include "MagickCore/monitor-private.h"
  58 #include "MagickCore/pixel-accessor.h"
  59 #include "MagickCore/property.h"
  60 #include "MagickCore/quantize.h"
  61 #include "MagickCore/quantum-private.h"
  62 #include "MagickCore/static.h"
  63 #include "MagickCore/string_.h"
  64 #include "MagickCore/module.h"
  65 #include "MagickCore/utility.h"
  66 \f
  67 /*
  68   Forward declarations.
  69 */
  70 static MagickBooleanType
  71   WriteCIPImage(const ImageInfo *,Image *,ExceptionInfo *);
  72 \f
  73 /*
  74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  75 %                                                                             %
  76 %                                                                             %
  77 %                                                                             %
  78 %   R e g i s t e r C I P I m a g e                                           %
  79 %                                                                             %
  80 %                                                                             %
  81 %                                                                             %
  82 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  83 %
  84 %  RegisterCIPImage() adds properties for the CIP IP phone image format to
  85 %  the list of supported formats.  The properties include the image format
  86 %  tag, a method to read and/or write the format, whether the format
  87 %  supports the saving of more than one frame to the same file or blob,
  88 %  whether the format supports native in-memory I/O, and a brief
  89 %  description of the format.
  90 %
  91 %  The format of the RegisterCIPImage method is:
  92 %
  93 %      size_t RegisterCIPImage(void)
  94 %
  95 */
  96 ModuleExport size_t RegisterCIPImage(void)
  97 {
  98   MagickInfo
  99     *entry;
 100
 101   entry=SetMagickInfo("CIP");
 102   entry->encoder=(EncodeImageHandler *) WriteCIPImage;
 103   entry->adjoin=MagickFalse;
 104   entry->description=ConstantString("Cisco IP phone image format");
 105   entry->module=ConstantString("CIP");
 106   (void) RegisterMagickInfo(entry);
 107   return(MagickImageCoderSignature);
 108 }
 109 \f
 110 /*
 111 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 112 %                                                                             %
 113 %                                                                             %
 114 %                                                                             %
 115 %   U n r e g i s t e r C I P I m a g e                                       %
 116 %                                                                             %
 117 %                                                                             %
 118 %                                                                             %
 119 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 120 %
 121 %  UnregisterCIPImage() removes format registrations made by the
 122 %  CIP module from the list of supported formats.
 123 %
 124 %  The format of the UnregisterCIPImage method is:
 125 %
 126 %      UnregisterCIPImage(void)
 127 %
 128 */
 129 ModuleExport void UnregisterCIPImage(void)
 130 {
 131   (void) UnregisterMagickInfo("CIP");
 132 }
 133 \f
 134 /*
 135 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 136 %                                                                             %
 137 %                                                                             %
 138 %                                                                             %
 139 %   W r i t e C I P I m a g e                                                 %
 140 %                                                                             %
 141 %                                                                             %
 142 %                                                                             %
 143 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 144 %
 145 %  Procedure WriteCIPImage() writes an image to a file in the Cisco IP phone
 146 %  image format.
 147 %
 148 %  The format of the WriteCIPImage method is:
 149 %
 150 %      MagickBooleanType WriteCIPImage(const ImageInfo *image_info,
 151 %        Image *image,ExceptionInfo *exception)
 152 %
 153 %  A description of each parameter follows.
 154 %
 155 %    o image_info: the image info.
 156 %
 157 %    o image:  The image.
 158 %
 159 %    o exception: return any errors or warnings in this structure.
 160 %
 161 */
 162
 163 static inline ssize_t MagickMin(const ssize_t x,const ssize_t y)
 164 {
 165   if (x < y)
 166     return(x);
 167   return(y);
 168 }
 169
 170 static MagickBooleanType WriteCIPImage(const ImageInfo *image_info,Image *image,
 171   ExceptionInfo *exception)
 172 {
 173   char
 174     buffer[MaxTextExtent];
 175
 176   const char
 177     *value;
 178
 179   MagickBooleanType
 180     status;
 181
 182   register const Quantum
 183     *p;
 184
 185   register ssize_t
 186     i,
 187     x;
 188
 189   ssize_t
 190     y;
 191
 192   unsigned char
 193     byte;
 194
 195   /*
 196     Open output image file.
 197   */
 198   assert(image_info != (const ImageInfo *) NULL);
 199   assert(image_info->signature == MagickSignature);
 200   assert(image != (Image *) NULL);
 201   assert(image->signature == MagickSignature);
 202   if (image->debug != MagickFalse)
 203     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 204   assert(exception != (ExceptionInfo *) NULL);
 205   assert(exception->signature == MagickSignature);
 206   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 207   if (status == MagickFalse)
 208     return(status);
 209   (void) WriteBlobString(image,"<CiscoIPPhoneImage>\n");
 210   value=GetImageProperty(image,"label",exception);
 211   if (value != (const char *) NULL)
 212     (void) FormatLocaleString(buffer,MaxTextExtent,"<Title>%s</Title>\n",value);
 213   else
 214     {
 215       char
 216         basename[MaxTextExtent];
 217
 218       GetPathComponent(image->filename,BasePath,basename);
 219       (void) FormatLocaleString(buffer,MaxTextExtent,"<Title>%s</Title>\n",
 220         basename);
 221     }
 222   (void) WriteBlobString(image,buffer);
 223   (void) FormatLocaleString(buffer,MaxTextExtent,
 224     "<LocationX>%.20g</LocationX>\n",(double) image->page.x);
 225   (void) WriteBlobString(image,buffer);
 226   (void) FormatLocaleString(buffer,MaxTextExtent,
 227     "<LocationY>%.20g</LocationY>\n",(double) image->page.y);
 228   (void) WriteBlobString(image,buffer);
 229   (void) FormatLocaleString(buffer,MaxTextExtent,"<Width>%.20g</Width>\n",
 230     (double) (image->columns+(image->columns % 2)));
 231   (void) WriteBlobString(image,buffer);
 232   (void) FormatLocaleString(buffer,MaxTextExtent,"<Height>%.20g</Height>\n",
 233     (double) image->rows);
 234   (void) WriteBlobString(image,buffer);
 235   (void) FormatLocaleString(buffer,MaxTextExtent,"<Depth>2</Depth>\n");
 236   (void) WriteBlobString(image,buffer);
 237   (void) WriteBlobString(image,"<Data>");
 238   if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
 239     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 240   for (y=0; y < (ssize_t) image->rows; y++)
 241   {
 242     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 243     if (p == (const Quantum *) NULL)
 244       break;
 245     for (x=0; x < ((ssize_t) image->columns-3); x+=4)
 246     {
 247       byte=(unsigned char)
 248         ((((size_t) (4*GetPixelIntensity(image,p+3)/QuantumRange) & 0x03) << 6) |
 249          (((size_t) (4*GetPixelIntensity(image,p+2)/QuantumRange) & 0x03) << 4) |
 250          (((size_t) (4*GetPixelIntensity(image,p+1)/QuantumRange) & 0x03) << 2) |
 251          (((size_t) (4*GetPixelIntensity(image,p+0)/QuantumRange) & 0x03) << 0));
 252       (void) FormatLocaleString(buffer,MaxTextExtent,"%02x",byte);
 253       (void) WriteBlobString(image,buffer);
 254       p+=4;
 255     }
 256     if ((image->columns % 4) != 0)
 257       {
 258         i=(ssize_t) image->columns % 4;
 259         byte=(unsigned char)
 260           ((((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,3))/QuantumRange) & 0x03) << 6) |
 261            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,2))/QuantumRange) & 0x03) << 4) |
 262            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,1))/QuantumRange) & 0x03) << 2) |
 263            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,0))/QuantumRange) & 0x03) << 0));
 264         (void) FormatLocaleString(buffer,MaxTextExtent,"%02x",~byte);
 265         (void) WriteBlobString(image,buffer);
 266       }
 267     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 268       image->rows);
 269     if (status == MagickFalse)
 270       break;
 271   }
 272   (void) WriteBlobString(image,"</Data>\n");
 273   (void) WriteBlobString(image,"</CiscoIPPhoneImage>\n");
 274   (void) CloseBlob(image);
 275   return(MagickTrue);
 276 }