2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % Read Constant Color Image. %
20 % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
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. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "MagickCore/studio.h"
43 #include "MagickCore/blob.h"
44 #include "MagickCore/blob-private.h"
45 #include "MagickCore/cache.h"
46 #include "MagickCore/color.h"
47 #include "MagickCore/color-private.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/pixel.h"
56 #include "MagickCore/pixel-accessor.h"
57 #include "MagickCore/quantum-private.h"
58 #include "MagickCore/static.h"
59 #include "MagickCore/string_.h"
60 #include "MagickCore/module.h"
63 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
67 % R e a d X C I m a g e %
71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
73 % ReadXCImage creates a constant image and initializes it to the
74 % X server color as specified by the filename. It allocates the memory
75 % necessary for the new Image structure and returns a pointer to the new
78 % The format of the ReadXCImage method is:
80 % Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)
82 % A description of each parameter follows:
86 % o image_info: the image info.
88 % o exception: return any errors or warnings in this structure.
91 static Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)
115 Initialize Image structure.
117 assert(image_info != (const ImageInfo *) NULL);
118 assert(image_info->signature == MagickSignature);
119 if (image_info->debug != MagickFalse)
120 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
121 image_info->filename);
122 assert(exception != (ExceptionInfo *) NULL);
123 assert(exception->signature == MagickSignature);
124 image=AcquireImage(image_info);
125 if (image->columns == 0)
127 if (image->rows == 0)
129 (void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
130 status=QueryMagickColor((char *) image_info->filename,&color,exception);
131 if (status == MagickFalse)
133 image=DestroyImage(image);
134 return((Image *) NULL);
136 image->colorspace=color.colorspace;
137 image->matte=color.matte;
139 SetPacketPixelInfo(image,&color,&pixel);
140 for (y=0; y < (ssize_t) image->rows; y++)
142 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
143 if (q == (const Quantum *) NULL)
145 for (x=0; x < (ssize_t) image->columns; x++)
147 SetPixelPacket(image,&pixel,q);
148 if (image->colorspace == CMYKColorspace)
149 SetPixelBlack(image,pixel.black,q);
150 q+=GetPixelChannels(image);
152 if (SyncAuthenticPixels(image,exception) == MagickFalse)
155 return(GetFirstImageInList(image));
159 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
163 % R e g i s t e r X C I m a g e %
167 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
169 % RegisterXCImage() adds attributes for the XC image format to
170 % the list of supported formats. The attributes include the image format
171 % tag, a method to read and/or write the format, whether the format
172 % supports the saving of more than one frame to the same file or blob,
173 % whether the format supports native in-memory I/O, and a brief
174 % description of the format.
176 % The format of the RegisterXCImage method is:
178 % size_t RegisterXCImage(void)
181 ModuleExport size_t RegisterXCImage(void)
186 entry=SetMagickInfo("XC");
187 entry->decoder=(DecodeImageHandler *) ReadXCImage;
188 entry->adjoin=MagickFalse;
189 entry->format_type=ImplicitFormatType;
190 entry->raw=MagickTrue;
191 entry->endian_support=MagickTrue;
192 entry->description=ConstantString("Constant image uniform color");
193 entry->module=ConstantString("XC");
194 (void) RegisterMagickInfo(entry);
195 entry=SetMagickInfo("CANVAS");
196 entry->decoder=(DecodeImageHandler *) ReadXCImage;
197 entry->adjoin=MagickFalse;
198 entry->format_type=ImplicitFormatType;
199 entry->raw=MagickTrue;
200 entry->endian_support=MagickTrue;
201 entry->description=ConstantString("Constant image uniform color");
202 entry->module=ConstantString("XC");
203 (void) RegisterMagickInfo(entry);
204 return(MagickImageCoderSignature);
208 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
212 % U n r e g i s t e r X C I m a g e %
216 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
218 % UnregisterXCImage() removes format registrations made by the
219 % XC module from the list of supported formats.
221 % The format of the UnregisterXCImage method is:
223 % UnregisterXCImage(void)
226 ModuleExport void UnregisterXCImage(void)
228 (void) UnregisterMagickInfo("CANVAS");
229 (void) UnregisterMagickInfo("XC");