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 1999-2011 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 %
  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/constitute.h"
  48 #include "MagickCore/exception.h"
  49 #include "MagickCore/exception-private.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/pixel-accessor.h"
  58 #include "MagickCore/property.h"
  59 #include "MagickCore/quantize.h"
  60 #include "MagickCore/quantum-private.h"
  61 #include "MagickCore/static.h"
  62 #include "MagickCore/string_.h"
  63 #include "MagickCore/module.h"
  64 #include "MagickCore/utility.h"
  65 \f
  66 /*
  67   Forward declarations.
  68 */
  69 static MagickBooleanType
  70   WriteCIPImage(const ImageInfo *,Image *);
  71 \f
  72 /*
  73 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  74 %                                                                             %
  75 %                                                                             %
  76 %                                                                             %
  77 %   R e g i s t e r C I P I m a g e                                           %
  78 %                                                                             %
  79 %                                                                             %
  80 %                                                                             %
  81 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  82 %
  83 %  RegisterCIPImage() adds properties for the CIP IP phone image format to
  84 %  the list of supported formats.  The properties include the image format
  85 %  tag, a method to read and/or write the format, whether the format
  86 %  supports the saving of more than one frame to the same file or blob,
  87 %  whether the format supports native in-memory I/O, and a brief
  88 %  description of the format.
  89 %
  90 %  The format of the RegisterCIPImage method is:
  91 %
  92 %      size_t RegisterCIPImage(void)
  93 %
  94 */
  95 ModuleExport size_t RegisterCIPImage(void)
  96 {
  97   MagickInfo
  98     *entry;
  99
 100   entry=SetMagickInfo("CIP");
 101   entry->encoder=(EncodeImageHandler *) WriteCIPImage;
 102   entry->adjoin=MagickFalse;
 103   entry->description=ConstantString("Cisco IP phone image format");
 104   entry->module=ConstantString("CIP");
 105   (void) RegisterMagickInfo(entry);
 106   return(MagickImageCoderSignature);
 107 }
 108 \f
 109 /*
 110 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 111 %                                                                             %
 112 %                                                                             %
 113 %                                                                             %
 114 %   U n r e g i s t e r C I P I m a g e                                       %
 115 %                                                                             %
 116 %                                                                             %
 117 %                                                                             %
 118 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 119 %
 120 %  UnregisterCIPImage() removes format registrations made by the
 121 %  CIP module from the list of supported formats.
 122 %
 123 %  The format of the UnregisterCIPImage method is:
 124 %
 125 %      UnregisterCIPImage(void)
 126 %
 127 */
 128 ModuleExport void UnregisterCIPImage(void)
 129 {
 130   (void) UnregisterMagickInfo("CIP");
 131 }
 132 \f
 133 /*
 134 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 135 %                                                                             %
 136 %                                                                             %
 137 %                                                                             %
 138 %   W r i t e C I P I m a g e                                                 %
 139 %                                                                             %
 140 %                                                                             %
 141 %                                                                             %
 142 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 143 %
 144 %  Procedure WriteCIPImage() writes an image to a file in the Cisco IP phone
 145 %  image format.
 146 %
 147 %  The format of the WriteCIPImage method is:
 148 %
 149 %      MagickBooleanType WriteCIPImage(const ImageInfo *image_info,Image *image)
 150 %
 151 %  A description of each parameter follows.
 152 %
 153 %    o image_info: the image info.
 154 %
 155 %    o image:  The image.
 156 %
 157 */
 158
 159 static inline ssize_t MagickMin(const ssize_t x,const ssize_t y)
 160 {
 161   if (x < y)
 162     return(x);
 163   return(y);
 164 }
 165
 166 static MagickBooleanType WriteCIPImage(const ImageInfo *image_info,Image *image)
 167 {
 168   char
 169     buffer[MaxTextExtent];
 170
 171   const char
 172     *value;
 173
 174   MagickBooleanType
 175     status;
 176
 177   register const Quantum
 178     *p;
 179
 180   register ssize_t
 181     i,
 182     x;
 183
 184   ssize_t
 185     y;
 186
 187   unsigned char
 188     byte;
 189
 190   /*
 191     Open output image file.
 192   */
 193   assert(image_info != (const ImageInfo *) NULL);
 194   assert(image_info->signature == MagickSignature);
 195   assert(image != (Image *) NULL);
 196   assert(image->signature == MagickSignature);
 197   if (image->debug != MagickFalse)
 198     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 199   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
 200   if (status == MagickFalse)
 201     return(status);
 202   (void) WriteBlobString(image,"<CiscoIPPhoneImage>\n");
 203   value=GetImageProperty(image,"label");
 204   if (value != (const char *) NULL)
 205     (void) FormatLocaleString(buffer,MaxTextExtent,"<Title>%s</Title>\n",value);
 206   else
 207     {
 208       char
 209         basename[MaxTextExtent];
 210
 211       GetPathComponent(image->filename,BasePath,basename);
 212       (void) FormatLocaleString(buffer,MaxTextExtent,"<Title>%s</Title>\n",
 213         basename);
 214     }
 215   (void) WriteBlobString(image,buffer);
 216   (void) FormatLocaleString(buffer,MaxTextExtent,
 217     "<LocationX>%.20g</LocationX>\n",(double) image->page.x);
 218   (void) WriteBlobString(image,buffer);
 219   (void) FormatLocaleString(buffer,MaxTextExtent,
 220     "<LocationY>%.20g</LocationY>\n",(double) image->page.y);
 221   (void) WriteBlobString(image,buffer);
 222   (void) FormatLocaleString(buffer,MaxTextExtent,"<Width>%.20g</Width>\n",
 223     (double) (image->columns+(image->columns % 2)));
 224   (void) WriteBlobString(image,buffer);
 225   (void) FormatLocaleString(buffer,MaxTextExtent,"<Height>%.20g</Height>\n",
 226     (double) image->rows);
 227   (void) WriteBlobString(image,buffer);
 228   (void) FormatLocaleString(buffer,MaxTextExtent,"<Depth>2</Depth>\n");
 229   (void) WriteBlobString(image,buffer);
 230   (void) WriteBlobString(image,"<Data>");
 231   if (image->colorspace != RGBColorspace)
 232     (void) TransformImageColorspace(image,RGBColorspace);
 233   for (y=0; y < (ssize_t) image->rows; y++)
 234   {
 235     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 236     if (p == (const Quantum *) NULL)
 237       break;
 238     for (x=0; x < ((ssize_t) image->columns-3); x+=4)
 239     {
 240       byte=(unsigned char)
 241         ((((size_t) (4*GetPixelIntensity(image,p+3)/QuantumRange) & 0x03) << 6) |
 242          (((size_t) (4*GetPixelIntensity(image,p+2)/QuantumRange) & 0x03) << 4) |
 243          (((size_t) (4*GetPixelIntensity(image,p+1)/QuantumRange) & 0x03) << 2) |
 244          (((size_t) (4*GetPixelIntensity(image,p+0)/QuantumRange) & 0x03) << 0));
 245       (void) FormatLocaleString(buffer,MaxTextExtent,"%02x",byte);
 246       (void) WriteBlobString(image,buffer);
 247       p+=4;
 248     }
 249     if ((image->columns % 4) != 0)
 250       {
 251         i=(ssize_t) image->columns % 4;
 252         byte=(unsigned char)
 253           ((((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,3))/QuantumRange) & 0x03) << 6) |
 254            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,2))/QuantumRange) & 0x03) << 4) |
 255            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,1))/QuantumRange) & 0x03) << 2) |
 256            (((size_t) (4*GetPixelIntensity(image,p+MagickMin(i,0))/QuantumRange) & 0x03) << 0));
 257         (void) FormatLocaleString(buffer,MaxTextExtent,"%02x",~byte);
 258         (void) WriteBlobString(image,buffer);
 259       }
 260     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 261       image->rows);
 262     if (status == MagickFalse)
 263       break;
 264   }
 265   (void) WriteBlobString(image,"</Data>\n");
 266   (void) WriteBlobString(image,"</CiscoIPPhoneImage>\n");
 267   (void) CloseBlob(image);
 268   return(MagickTrue);
 269 }