1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % H H AAA L DDDD % 7 % H H A A L D D % 8 % HHHHH AAAAA L D D % 9 % H H A A L D D % 10 % H H A A LLLLL DDDD % 11 % % 12 % % 13 % Create Identity Hald CLUT Image Format % 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/colorspace.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/module.h" 56 #include "MagickCore/monitor.h" 57 #include "MagickCore/monitor-private.h" 58 #include "MagickCore/pixel-accessor.h" 59 #include "MagickCore/quantum-private.h" 60 #include "MagickCore/resource_.h" 61 #include "MagickCore/static.h" 62 #include "MagickCore/string_.h" 63 #include "MagickCore/string-private.h" 64 #include "MagickCore/thread-private.h" 65 66 /* 68 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 69 % % 70 % % 71 % % 72 % R e a d H A L D I m a g e % 73 % % 74 % % 75 % % 76 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 77 % 78 % ReadHALDImage() creates a Hald color lookup table image and returns it. It 79 % allocates the memory necessary for the new Image structure and returns a 80 % pointer to the new image. 81 % 82 % The format of the ReadHALDImage method is: 83 % 84 % Image *ReadHALDImage(const ImageInfo *image_info, 85 % ExceptionInfo *exception) 86 % 87 % A description of each parameter follows: 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 *ReadHALDImage(const ImageInfo *image_info, 95 ExceptionInfo *exception) 96 { 97 Image 98 *image; 99 100 MagickBooleanType 101 status; 102 103 size_t 104 cube_size, 105 level; 106 107 ssize_t 108 y; 109 110 /* 111 Create HALD color lookup table image. 112 */ 113 assert(image_info != (const ImageInfo *) NULL); 114 assert(image_info->signature == MagickCoreSignature); 115 if (image_info->debug != MagickFalse) 116 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", 117 image_info->filename); 118 assert(exception != (ExceptionInfo *) NULL); 119 assert(exception->signature == MagickCoreSignature); 120 image=AcquireImage(image_info,exception); 121 level=0; 122 if (*image_info->filename != '\0') 123 level=StringToUnsignedLong(image_info->filename); 124 if (level < 2) 125 level=8; 126 status=MagickTrue; 127 cube_size=level*level; 128 image->columns=(size_t) (level*cube_size); 129 image->rows=(size_t) (level*cube_size); 130 status=SetImageExtent(image,image->columns,image->rows,exception); 131 if (status == MagickFalse) 132 return(DestroyImageList(image)); 133 for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level) 134 { 135 ssize_t 136 blue, 137 green, 138 red; 139 140 register Quantum 141 *magick_restrict q; 142 143 if (status == MagickFalse) 144 continue; 145 q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,exception); 146 if (q == (Quantum *) NULL) 147 { 148 status=MagickFalse; 149 continue; 150 } 151 blue=y/(ssize_t) level; 152 for (green=0; green < (ssize_t) cube_size; green++) 153 { 154 for (red=0; red < (ssize_t) cube_size; red++) 155 { 156 SetPixelRed(image,ClampToQuantum(QuantumRange*red/(cube_size-1.0)),q); 157 SetPixelGreen(image,ClampToQuantum(QuantumRange*green/(cube_size-1.0)), 158 q); 159 SetPixelBlue(image,ClampToQuantum(QuantumRange*blue/(cube_size-1.0)),q); 160 SetPixelAlpha(image,OpaqueAlpha,q); 161 q+=GetPixelChannels(image); 162 } 163 } 164 if (SyncAuthenticPixels(image,exception) == MagickFalse) 165 status=MagickFalse; 166 } 167 return(GetFirstImageInList(image)); 168 } 169 170 /* 172 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 173 % % 174 % % 175 % % 176 % R e g i s t e r H A L D I m a g e % 177 % % 178 % % 179 % % 180 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 181 % 182 % RegisterHALDImage() adds attributes for the Hald color lookup table image 183 % format to the list of supported formats. The attributes include the image 184 % format tag, a method to read and/or write the format, whether the format 185 % supports the saving of more than one frame to the same file or blob, whether 186 % the format supports native in-memory I/O, and a brief description of the 187 % format. 188 % 189 % The format of the RegisterHALDImage method is: 190 % 191 % size_t RegisterHALDImage(void) 192 % 193 */ 194 ModuleExport size_t RegisterHALDImage(void) 195 { 196 MagickInfo 197 *entry; 198 199 entry=AcquireMagickInfo("HALD","HALD", 200 "Identity Hald color lookup table image"); 201 entry->decoder=(DecodeImageHandler *) ReadHALDImage; 202 entry->flags^=CoderAdjoinFlag; 203 entry->format_type=ImplicitFormatType; 204 entry->flags|=CoderRawSupportFlag; 205 entry->flags|=CoderEndianSupportFlag; 206 (void) RegisterMagickInfo(entry); 207 return(MagickImageCoderSignature); 208 } 209 210 /* 212 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 213 % % 214 % % 215 % % 216 % U n r e g i s t e r H A L D I m a g e % 217 % % 218 % % 219 % % 220 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 221 % 222 % UnregisterHALDImage() removes format registrations made by the 223 % HALD module from the list of supported formats. 224 % 225 % The format of the UnregisterHALDImage method is: 226 % 227 % UnregisterHALDImage(void) 228 % 229 */ 230 ModuleExport void UnregisterHALDImage(void) 231 { 232 (void) UnregisterMagickInfo("HALD"); 233 } 234
