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 1999-2010 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 "magick/studio.h"
  42 #include "magick/blob.h"
  43 #include "magick/blob-private.h"
  44 #include "magick/cache.h"
  45 #include "magick/color-private.h"
  46 #include "magick/colorspace.h"
  47 #include "magick/constitute.h"
  48 #include "magick/exception.h"
  49 #include "magick/exception-private.h"
  50 #include "magick/image.h"
  51 #include "magick/image-private.h"
  52 #include "magick/list.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/property.h"
  58 #include "magick/quantize.h"
  59 #include "magick/quantum-private.h"
  60 #include "magick/static.h"
  61 #include "magick/string_.h"
  62 #include "magick/module.h"
  63 #include "magick/utility.h"
  64 \f
  65 /*
  66   Forward declarations.
  67 */
  68 static MagickBooleanType
  69   WriteCIPImage(const ImageInfo *,Image *);
  70 \f
  71 /*
  72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  73 %                                                                             %
  74 %                                                                             %
  75 %                                                                             %
  76 %   R e g i s t e r C I P I m a g e                                           %
  77 %                                                                             %
  78 %                                                                             %
  79 %                                                                             %
  80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  81 %
  82 %  RegisterCIPImage() adds properties for the CIP IP phone image format to
  83 %  the list of supported formats.  The properties 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 RegisterCIPImage method is:
  90 %
  91 %      size_t RegisterCIPImage(void)
  92 %
  93 */
  94 ModuleExport size_t RegisterCIPImage(void)
  95 {
  96   MagickInfo
  97     *entry;
  98
  99   entry=SetMagickInfo("CIP");
 100   entry->encoder=(EncodeImageHandler *) WriteCIPImage;
 101   entry->adjoin=MagickFalse;
 102   entry->description=ConstantString("Cisco IP phone image format");
 103   entry->module=ConstantString("CIP");
 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 C I P I m a g e                                       %
 114 %                                                                             %
 115 %                                                                             %
 116 %                                                                             %
 117 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 118 %
 119 %  UnregisterCIPImage() removes format registrations made by the
 120 %  CIP module from the list of supported formats.
 121 %
 122 %  The format of the UnregisterCIPImage method is:
 123 %
 124 %      UnregisterCIPImage(void)
 125 %
 126 */
 127 ModuleExport void UnregisterCIPImage(void)
 128 {
 129   (void) UnregisterMagickInfo("CIP");
 130 }
 131 \f
 132 /*
 133 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 134 %                                                                             %
 135 %                                                                             %
 136 %                                                                             %
 137 %   W r i t e C I P I m a g e                                                 %
 138 %                                                                             %
 139 %                                                                             %
 140 %                                                                             %
 141 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 142 %
 143 %  Procedure WriteCIPImage() writes an image to a file in the Cisco IP phone
 144 %  image format.
 145 %
 146 %  The format of the WriteCIPImage method is:
 147 %
 148 %      MagickBooleanType WriteCIPImage(const ImageInfo *image_info,Image *image)
 149 %
 150 %  A description of each parameter follows.
 151 %
 152 %    o image_info: the image info.
 153 %
 154 %    o image:  The image.
 155 %
 156 */
 157
 158 static inline ssize_t MagickMin(const ssize_t x,const ssize_t y)
 159 {
 160   if (x < y)
 161     return(x);
 162   return(y);
 163 }
 164
 165 static MagickBooleanType WriteCIPImage(const ImageInfo *image_info,Image *image)
 166 {
 167   char
 168     buffer[MaxTextExtent];
 169
 170   const char
 171     *value;
 172
 173   ssize_t
 174     y;
 175
 176   MagickBooleanType
 177     status;
 178
 179   register const PixelPacket
 180     *p;
 181
 182   register ssize_t
 183     i,
 184     x;
 185
 186   unsigned char
 187     byte;
 188
 189   /*
 190     Open output image file.
 191   */
 192   assert(image_info != (const ImageInfo *) NULL);
 193   assert(image_info->signature == MagickSignature);
 194   assert(image != (Image *) NULL);
 195   assert(image->signature == MagickSignature);
 196   if (image->debug != MagickFalse)
 197     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 198   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
 199   if (status == MagickFalse)
 200     return(status);
 201   (void) WriteBlobString(image,"<CiscoIPPhoneImage>\n");
 202   value=GetImageProperty(image,"label");
 203   if (value != (const char *) NULL)
 204     (void) FormatMagickString(buffer,MaxTextExtent,"<Title>%s</Title>\n",value);
 205   else
 206     {
 207       char
 208         basename[MaxTextExtent];
 209
 210       GetPathComponent(image->filename,BasePath,basename);
 211       (void) FormatMagickString(buffer,MaxTextExtent,"<Title>%s</Title>\n",
 212         basename);
 213     }
 214   (void) WriteBlobString(image,buffer);
 215   (void) FormatMagickString(buffer,MaxTextExtent,
 216     "<LocationX>%.20g</LocationX>\n",(double) image->page.x);
 217   (void) WriteBlobString(image,buffer);
 218   (void) FormatMagickString(buffer,MaxTextExtent,
 219     "<LocationY>%.20g</LocationY>\n",(double) image->page.y);
 220   (void) WriteBlobString(image,buffer);
 221   (void) FormatMagickString(buffer,MaxTextExtent,"<Width>%.20g</Width>\n",
 222     (double) (image->columns+(image->columns % 2)));
 223   (void) WriteBlobString(image,buffer);
 224   (void) FormatMagickString(buffer,MaxTextExtent,"<Height>%.20g</Height>\n",
 225     (double) image->rows);
 226   (void) WriteBlobString(image,buffer);
 227   (void) FormatMagickString(buffer,MaxTextExtent,"<Depth>2</Depth>\n");
 228   (void) WriteBlobString(image,buffer);
 229   (void) WriteBlobString(image,"<Data>");
 230   if (image->colorspace != RGBColorspace)
 231     (void) TransformImageColorspace(image,RGBColorspace);
 232   for (y=0; y < (ssize_t) image->rows; y++)
 233   {
 234     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 235     if (p == (const PixelPacket *) NULL)
 236       break;
 237     for (x=0; x < ((ssize_t) image->columns-3); x+=4)
 238     {
 239       byte=(unsigned char)
 240         ((((size_t) (4*PixelIntensityToQuantum(p+3)/QuantumRange) & 0x03) << 6) |
 241          (((size_t) (4*PixelIntensityToQuantum(p+2)/QuantumRange) & 0x03) << 4) |
 242          (((size_t) (4*PixelIntensityToQuantum(p+1)/QuantumRange) & 0x03) << 2) |
 243          (((size_t) (4*PixelIntensityToQuantum(p+0)/QuantumRange) & 0x03) << 0));
 244       (void) FormatMagickString(buffer,MaxTextExtent,"%02x",byte);
 245       (void) WriteBlobString(image,buffer);
 246       p+=4;
 247     }
 248     if ((image->columns % 4) != 0)
 249       {
 250         i=(ssize_t) image->columns % 4;
 251         byte=(unsigned char)
 252           ((((size_t) (4*PixelIntensityToQuantum(p+MagickMin(i,3))/QuantumRange) & 0x03) << 6) |
 253            (((size_t) (4*PixelIntensityToQuantum(p+MagickMin(i,2))/QuantumRange) & 0x03) << 4) |
 254            (((size_t) (4*PixelIntensityToQuantum(p+MagickMin(i,1))/QuantumRange) & 0x03) << 2) |
 255            (((size_t) (4*PixelIntensityToQuantum(p+MagickMin(i,0))/QuantumRange) & 0x03) << 0));
 256         (void) FormatMagickString(buffer,MaxTextExtent,"%02x",~byte);
 257         (void) WriteBlobString(image,buffer);
 258       }
 259     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 260                 image->rows);
 261     if (status == MagickFalse)
 262       break;
 263   }
 264   (void) WriteBlobString(image,"</Data>\n");
 265   (void) WriteBlobString(image,"</CiscoIPPhoneImage>\n");
 266   (void) CloseBlob(image);
 267   return(MagickTrue);
 268 }