cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 6 | % H H IIIII SSSSS TTTTT OOO GGGG RRRR AAA M M % |
| 7 | % H H I SS T O O G R R A A MM MM % |
| 8 | % HHHHH I SSS T O O G GG RRRR AAAAA M M M % |
| 9 | % H H I SS T O O G G R R A A M M % |
| 10 | % H H IIIII SSSSS T OOO GGG R R A A M M % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 11 | % % |
| 12 | % % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 13 | % Write A Histogram Image. % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 14 | % % |
| 15 | % Software Design % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 16 | % John Cristy % |
| 17 | % July 1992 % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 18 | % % |
| 19 | % % |
cristy | 7e41fe8 | 2010-12-04 23:12:08 +0000 | [diff] [blame] | 20 | % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 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 | /* |
| 40 | Include declarations. |
| 41 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 42 | #include "MagickCore/studio.h" |
| 43 | #include "MagickCore/property.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/constitute.h" |
| 50 | #include "MagickCore/exception.h" |
| 51 | #include "MagickCore/exception-private.h" |
| 52 | #include "MagickCore/geometry.h" |
| 53 | #include "MagickCore/histogram.h" |
| 54 | #include "MagickCore/image-private.h" |
| 55 | #include "MagickCore/magick.h" |
| 56 | #include "MagickCore/memory_.h" |
| 57 | #include "MagickCore/monitor.h" |
| 58 | #include "MagickCore/monitor-private.h" |
| 59 | #include "MagickCore/option.h" |
| 60 | #include "MagickCore/pixel-accessor.h" |
| 61 | #include "MagickCore/quantum-private.h" |
| 62 | #include "MagickCore/resource_.h" |
| 63 | #include "MagickCore/static.h" |
| 64 | #include "MagickCore/statistic.h" |
| 65 | #include "MagickCore/string_.h" |
| 66 | #include "MagickCore/module.h" |
| 67 | #include "MagickCore/utility.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 68 | |
| 69 | /* |
| 70 | Forward declarations. |
| 71 | */ |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 72 | static MagickBooleanType |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 73 | WriteHISTOGRAMImage(const ImageInfo *,Image *,ExceptionInfo *); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 74 | |
| 75 | /* |
| 76 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 77 | % % |
| 78 | % % |
| 79 | % % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 80 | % R e g i s t e r H I S T O G R A M I m a g e % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 81 | % % |
| 82 | % % |
| 83 | % % |
| 84 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 85 | % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 86 | % RegisterHISTOGRAMImage() adds attributes for the Histogram image format |
| 87 | % to the list of supported formats. The attributes include the image format |
| 88 | % tag, a method to read and/or write the format, whether the format |
| 89 | % supports the saving of more than one frame to the same file or blob, |
| 90 | % whether the format supports native in-memory I/O, and a brief |
| 91 | % description of the format. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 92 | % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 93 | % The format of the RegisterHISTOGRAMImage method is: |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 94 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 95 | % size_t RegisterHISTOGRAMImage(void) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 96 | % |
| 97 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 98 | ModuleExport size_t RegisterHISTOGRAMImage(void) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 99 | { |
| 100 | MagickInfo |
| 101 | *entry; |
| 102 | |
| 103 | entry=SetMagickInfo("HISTOGRAM"); |
| 104 | entry->encoder=(EncodeImageHandler *) WriteHISTOGRAMImage; |
| 105 | entry->adjoin=MagickFalse; |
cristy | 009d739 | 2010-07-25 22:08:41 +0000 | [diff] [blame] | 106 | entry->format_type=ImplicitFormatType; |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 107 | entry->description=ConstantString("Histogram of the image"); |
| 108 | entry->module=ConstantString("HISTOGRAM"); |
| 109 | (void) RegisterMagickInfo(entry); |
| 110 | return(MagickImageCoderSignature); |
| 111 | } |
| 112 | |
| 113 | /* |
| 114 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 115 | % % |
| 116 | % % |
| 117 | % % |
| 118 | % U n r e g i s t e r H I S T O G R A M I m a g e % |
| 119 | % % |
| 120 | % % |
| 121 | % % |
| 122 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 123 | % |
| 124 | % UnregisterHISTOGRAMImage() removes format registrations made by the |
| 125 | % HISTOGRAM module from the list of supported formats. |
| 126 | % |
| 127 | % The format of the UnregisterHISTOGRAMImage method is: |
| 128 | % |
| 129 | % UnregisterHISTOGRAMImage(void) |
| 130 | % |
| 131 | */ |
| 132 | ModuleExport void UnregisterHISTOGRAMImage(void) |
| 133 | { |
| 134 | (void) UnregisterMagickInfo("HISTOGRAM"); |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 139 | % % |
| 140 | % % |
| 141 | % % |
| 142 | % W r i t e H I S T O G R A M I m a g e % |
| 143 | % % |
| 144 | % % |
| 145 | % % |
| 146 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 147 | % |
| 148 | % WriteHISTOGRAMImage() writes an image to a file in Histogram format. |
| 149 | % The image shows a histogram of the color (or gray) values in the image. The |
| 150 | % image consists of three overlaid histograms: a red one for the red channel, |
| 151 | % a green one for the green channel, and a blue one for the blue channel. The |
| 152 | % image comment contains a list of unique pixel values and the number of times |
| 153 | % each occurs in the image. |
| 154 | % |
| 155 | % This method is strongly based on a similar one written by |
| 156 | % muquit@warm.semcor.com which in turn is based on ppmhistmap of netpbm. |
| 157 | % |
| 158 | % The format of the WriteHISTOGRAMImage method is: |
| 159 | % |
| 160 | % MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info, |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 161 | % Image *image,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 162 | % |
| 163 | % A description of each parameter follows. |
| 164 | % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 165 | % o image_info: the image info. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 166 | % |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 167 | % o image: The image. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 168 | % |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 169 | % o exception: return any errors or warnings in this structure. |
| 170 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 171 | */ |
| 172 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 173 | static inline size_t MagickMax(const size_t x,const size_t y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 174 | { |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 175 | if (x > y) |
| 176 | return(x); |
| 177 | return(y); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 178 | } |
| 179 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 180 | static MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info, |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 181 | Image *image,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 182 | { |
cristy | 31ac0f0 | 2011-03-12 02:04:47 +0000 | [diff] [blame] | 183 | #define HistogramDensity "256x200" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 184 | |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 185 | char |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 186 | filename[MaxTextExtent]; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 187 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 188 | const char |
| 189 | *option; |
| 190 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 191 | Image |
| 192 | *histogram_image; |
| 193 | |
| 194 | ImageInfo |
| 195 | *write_info; |
| 196 | |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 197 | MagickBooleanType |
| 198 | status; |
| 199 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 200 | PixelInfo |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 201 | *histogram; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 202 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 203 | MagickRealType |
| 204 | maximum, |
| 205 | scale; |
| 206 | |
| 207 | RectangleInfo |
| 208 | geometry; |
| 209 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 210 | register const Quantum |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 211 | *p; |
| 212 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 213 | register Quantum |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 214 | *q, |
| 215 | *r; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 216 | |
cristy | 31ac0f0 | 2011-03-12 02:04:47 +0000 | [diff] [blame] | 217 | register ssize_t |
| 218 | x; |
| 219 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 220 | size_t |
| 221 | length; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 222 | |
cristy | 31ac0f0 | 2011-03-12 02:04:47 +0000 | [diff] [blame] | 223 | ssize_t |
| 224 | y; |
| 225 | |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 226 | /* |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 227 | Allocate histogram image. |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 228 | */ |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 229 | assert(image_info != (const ImageInfo *) NULL); |
| 230 | assert(image_info->signature == MagickSignature); |
| 231 | assert(image != (Image *) NULL); |
| 232 | assert(image->signature == MagickSignature); |
| 233 | if (image->debug != MagickFalse) |
| 234 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 235 | image_info->filename); |
| 236 | SetGeometry(image,&geometry); |
| 237 | if (image_info->density == (char *) NULL) |
| 238 | (void) ParseAbsoluteGeometry(HistogramDensity,&geometry); |
| 239 | else |
| 240 | (void) ParseAbsoluteGeometry(image_info->density,&geometry); |
| 241 | histogram_image=CloneImage(image,geometry.width,geometry.height,MagickTrue, |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 242 | exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 243 | if (histogram_image == (Image *) NULL) |
| 244 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 245 | (void) SetImageStorageClass(histogram_image,DirectClass,exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 246 | /* |
| 247 | Allocate histogram count arrays. |
| 248 | */ |
| 249 | length=MagickMax((size_t) ScaleQuantumToChar((Quantum) QuantumRange)+1UL, |
| 250 | histogram_image->columns); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 251 | histogram=(PixelInfo *) AcquireQuantumMemory(length, |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 252 | sizeof(*histogram)); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 253 | if (histogram == (PixelInfo *) NULL) |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 254 | { |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 255 | histogram_image=DestroyImage(histogram_image); |
| 256 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 257 | } |
| 258 | /* |
| 259 | Initialize histogram count arrays. |
| 260 | */ |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 261 | (void) ResetMagickMemory(histogram,0,length*sizeof(*histogram)); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 262 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 263 | { |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 264 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 265 | if (p == (const Quantum *) NULL) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 266 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 267 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 268 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 269 | if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 270 | histogram[ScaleQuantumToChar(GetPixelRed(image,p))].red++; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 271 | if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 272 | histogram[ScaleQuantumToChar(GetPixelGreen(image,p))].green++; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 273 | if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 274 | histogram[ScaleQuantumToChar(GetPixelBlue(image,p))].blue++; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 275 | p+=GetPixelChannels(image); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 276 | } |
| 277 | } |
| 278 | maximum=histogram[0].red; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 279 | for (x=0; x < (ssize_t) histogram_image->columns; x++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 280 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 281 | if (((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) && |
cristy | 2b9582a | 2011-07-04 17:38:56 +0000 | [diff] [blame] | 282 | (maximum < histogram[x].red)) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 283 | maximum=histogram[x].red; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 284 | if (((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) && |
cristy | 2b9582a | 2011-07-04 17:38:56 +0000 | [diff] [blame] | 285 | (maximum < histogram[x].green)) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 286 | maximum=histogram[x].green; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 287 | if (((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) && |
cristy | 2b9582a | 2011-07-04 17:38:56 +0000 | [diff] [blame] | 288 | (maximum < histogram[x].blue)) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 289 | maximum=histogram[x].blue; |
| 290 | } |
| 291 | scale=(MagickRealType) histogram_image->rows/maximum; |
| 292 | /* |
| 293 | Initialize histogram image. |
| 294 | */ |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 295 | (void) QueryColorDatabase("#000000",&histogram_image->background_color, |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 296 | exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 297 | (void) SetImageBackgroundColor(histogram_image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 298 | for (x=0; x < (ssize_t) histogram_image->columns; x++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 299 | { |
| 300 | q=GetAuthenticPixels(histogram_image,x,0,1,histogram_image->rows,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 301 | if (q == (Quantum *) NULL) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 302 | break; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 303 | if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 304 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 305 | y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].red-0.5); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 306 | r=q+y; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 307 | for ( ; y < (ssize_t) histogram_image->rows; y++) |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 308 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 309 | SetPixelRed(histogram_image,QuantumRange,r); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 310 | r++; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 311 | } |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 312 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 313 | if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 314 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 315 | y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].green-0.5); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 316 | r=q+y; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 317 | for ( ; y < (ssize_t) histogram_image->rows; y++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 318 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 319 | SetPixelGreen(histogram_image,QuantumRange,r); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 320 | r++; |
| 321 | } |
| 322 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 323 | if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 324 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 325 | y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].blue-0.5); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 326 | r=q+y; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 327 | for ( ; y < (ssize_t) histogram_image->rows; y++) |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 328 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 329 | SetPixelBlue(histogram_image,QuantumRange,r); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 330 | r++; |
| 331 | } |
| 332 | } |
| 333 | if (SyncAuthenticPixels(histogram_image,exception) == MagickFalse) |
| 334 | break; |
| 335 | status=SetImageProgress(image,SaveImageTag,y,histogram_image->rows); |
| 336 | if (status == MagickFalse) |
| 337 | break; |
| 338 | } |
| 339 | /* |
| 340 | Relinquish resources. |
| 341 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 342 | histogram=(PixelInfo *) RelinquishMagickMemory(histogram); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 343 | option=GetImageOption(image_info,"histogram:unique-colors"); |
cristy | 62bd7a2 | 2010-04-22 01:27:07 +0000 | [diff] [blame] | 344 | if ((option == (const char *) NULL) || (IsMagickTrue(option) != MagickFalse)) |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 345 | { |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 346 | FILE |
| 347 | *file; |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 348 | |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 349 | int |
| 350 | unique_file; |
| 351 | |
| 352 | /* |
| 353 | Add a unique colors as an image comment. |
| 354 | */ |
| 355 | file=(FILE *) NULL; |
| 356 | unique_file=AcquireUniqueFileResource(filename); |
| 357 | if (unique_file != -1) |
| 358 | file=fdopen(unique_file,"wb"); |
| 359 | if ((unique_file != -1) && (file != (FILE *) NULL)) |
| 360 | { |
| 361 | char |
| 362 | *property; |
| 363 | |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 364 | (void) GetNumberColors(image,file,exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 365 | (void) fclose(file); |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 366 | property=FileToString(filename,~0UL,exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 367 | if (property != (char *) NULL) |
| 368 | { |
| 369 | (void) SetImageProperty(histogram_image,"comment",property); |
| 370 | property=DestroyString(property); |
| 371 | } |
| 372 | } |
| 373 | (void) RelinquishUniqueFileResource(filename); |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 374 | } |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 375 | /* |
| 376 | Write Histogram image. |
| 377 | */ |
| 378 | (void) CopyMagickString(histogram_image->filename,image_info->filename, |
| 379 | MaxTextExtent); |
| 380 | write_info=CloneImageInfo(image_info); |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 381 | (void) SetImageInfo(write_info,1,exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 382 | if (LocaleCompare(write_info->magick,"HISTOGRAM") == 0) |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 383 | (void) FormatLocaleString(histogram_image->filename,MaxTextExtent, |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 384 | "miff:%s",write_info->filename); |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 385 | status=WriteImage(write_info,histogram_image,exception); |
cristy | 787c09c | 2010-04-16 18:18:34 +0000 | [diff] [blame] | 386 | histogram_image=DestroyImage(histogram_image); |
| 387 | write_info=DestroyImageInfo(write_info); |
| 388 | return(status); |
cristy | 1bd4a3a | 2010-04-16 12:38:47 +0000 | [diff] [blame] | 389 | } |