1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % X X CCCC % 7 % X X C % 8 % X C % 9 % X X C % 10 % X X CCCC % 11 % % 12 % % 13 % Read Constant Color Image. % 14 % % 15 % Software Design % 16 % Cristy % 17 % July 1992 % 18 % % 19 % % 20 % Copyright 1999-2016 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 39 /* 41 Include declarations. 42 */ 43 #include "MagickCore/studio.h" 44 #include "MagickCore/blob.h" 45 #include "MagickCore/blob-private.h" 46 #include "MagickCore/cache.h" 47 #include "MagickCore/color.h" 48 #include "MagickCore/color-private.h" 49 #include "MagickCore/colorspace-private.h" 50 #include "MagickCore/exception.h" 51 #include "MagickCore/exception-private.h" 52 #include "MagickCore/image.h" 53 #include "MagickCore/image-private.h" 54 #include "MagickCore/list.h" 55 #include "MagickCore/magick.h" 56 #include "MagickCore/memory_.h" 57 #include "MagickCore/pixel.h" 58 #include "MagickCore/pixel-accessor.h" 59 #include "MagickCore/quantum-private.h" 60 #include "MagickCore/static.h" 61 #include "MagickCore/string_.h" 62 #include "MagickCore/module.h" 63 64 /* 66 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 67 % % 68 % % 69 % % 70 % R e a d X C I m a g e % 71 % % 72 % % 73 % % 74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 75 % 76 % ReadXCImage creates a constant image and initializes it to the 77 % X server color as specified by the filename. It allocates the memory 78 % necessary for the new Image structure and returns a pointer to the new 79 % image. 80 % 81 % The format of the ReadXCImage method is: 82 % 83 % Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception) 84 % 85 % A description of each parameter follows: 86 % 87 % o image: The image. 88 % 89 % o image_info: the image info. 90 % 91 % o exception: return any errors or warnings in this structure. 92 % 93 */ 94 static Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception) 95 { 96 Image 97 *image; 98 99 MagickBooleanType 100 status; 101 102 PixelInfo 103 pixel; 104 105 register ssize_t 106 x; 107 108 register Quantum 109 *q; 110 111 ssize_t 112 y; 113 114 /* 115 Initialize Image structure. 116 */ 117 assert(image_info != (const ImageInfo *) NULL); 118 assert(image_info->signature == MagickCoreSignature); 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 == MagickCoreSignature); 124 image=AcquireImage(image_info,exception); 125 if (image->columns == 0) 126 image->columns=1; 127 if (image->rows == 0) 128 image->rows=1; 129 status=SetImageExtent(image,image->columns,image->rows,exception); 130 if (status == MagickFalse) 131 return(DestroyImageList(image)); 132 (void) CopyMagickString(image->filename,image_info->filename,MagickPathExtent); 133 if (*image_info->filename == '\0') 134 pixel=image->background_color; 135 else 136 { 137 status=QueryColorCompliance((char *) image_info->filename,AllCompliance, 138 &pixel,exception); 139 if (status == MagickFalse) 140 { 141 image=DestroyImage(image); 142 return((Image *) NULL); 143 } 144 } 145 (void) SetImageColorspace(image,pixel.colorspace,exception); 146 image->alpha_trait=pixel.alpha_trait; 147 for (y=0; y < (ssize_t) image->rows; y++) 148 { 149 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); 150 if (q == (Quantum *) NULL) 151 break; 152 for (x=0; x < (ssize_t) image->columns; x++) 153 { 154 SetPixelViaPixelInfo(image,&pixel,q); 155 q+=GetPixelChannels(image); 156 } 157 if (SyncAuthenticPixels(image,exception) == MagickFalse) 158 break; 159 } 160 return(GetFirstImageInList(image)); 161 } 162 163 /* 165 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 166 % % 167 % % 168 % % 169 % R e g i s t e r X C I m a g e % 170 % % 171 % % 172 % % 173 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 174 % 175 % RegisterXCImage() adds attributes for the XC image format to 176 % the list of supported formats. The attributes include the image format 177 % tag, a method to read and/or write the format, whether the format 178 % supports the saving of more than one frame to the same file or blob, 179 % whether the format supports native in-memory I/O, and a brief 180 % description of the format. 181 % 182 % The format of the RegisterXCImage method is: 183 % 184 % size_t RegisterXCImage(void) 185 % 186 */ 187 ModuleExport size_t RegisterXCImage(void) 188 { 189 MagickInfo 190 *entry; 191 192 entry=AcquireMagickInfo("XC","XC","Constant image uniform color"); 193 entry->decoder=(DecodeImageHandler *) ReadXCImage; 194 entry->flags^=CoderAdjoinFlag; 195 entry->format_type=ImplicitFormatType; 196 entry->flags|=CoderRawSupportFlag; 197 entry->flags|=CoderEndianSupportFlag; 198 (void) RegisterMagickInfo(entry); 199 entry=AcquireMagickInfo("XC","CANVAS","Constant image uniform color"); 200 entry->decoder=(DecodeImageHandler *) ReadXCImage; 201 entry->flags^=CoderAdjoinFlag; 202 entry->format_type=ImplicitFormatType; 203 entry->flags|=CoderRawSupportFlag; 204 entry->flags|=CoderEndianSupportFlag; 205 (void) RegisterMagickInfo(entry); 206 return(MagickImageCoderSignature); 207 } 208 209 /* 211 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 212 % % 213 % % 214 % % 215 % U n r e g i s t e r X C I m a g e % 216 % % 217 % % 218 % % 219 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 220 % 221 % UnregisterXCImage() removes format registrations made by the 222 % XC module from the list of supported formats. 223 % 224 % The format of the UnregisterXCImage method is: 225 % 226 % UnregisterXCImage(void) 227 % 228 */ 229 ModuleExport void UnregisterXCImage(void) 230 { 231 (void) UnregisterMagickInfo("CANVAS"); 232 (void) UnregisterMagickInfo("XC"); 233 } 234
