cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % BBBB M M PPPP % |
| 7 | % B B MM MM P P % |
| 8 | % BBBB M M M PPPP % |
| 9 | % B B M M P % |
| 10 | % BBBB M M P % |
| 11 | % % |
| 12 | % % |
| 13 | % Read/Write Microsoft Windows Bitmap Image Format % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % Glenn Randers-Pehrson % |
| 18 | % December 2001 % |
| 19 | % % |
| 20 | % % |
cristy | 1454be7 | 2011-12-19 01:52:48 +0000 | [diff] [blame] | 21 | % Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 22 | % dedicated to making software imaging solutions freely available. % |
| 23 | % % |
| 24 | % You may not use this file except in compliance with the License. You may % |
| 25 | % obtain a copy of the License at % |
| 26 | % % |
| 27 | % http://www.imagemagick.org/script/license.php % |
| 28 | % % |
| 29 | % Unless required by applicable law or agreed to in writing, software % |
| 30 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 31 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 32 | % See the License for the specific language governing permissions and % |
| 33 | % limitations under the License. % |
| 34 | % % |
| 35 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 36 | % |
| 37 | % |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | Include declarations. |
| 42 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 43 | #include "MagickCore/studio.h" |
| 44 | #include "MagickCore/blob.h" |
| 45 | #include "MagickCore/blob-private.h" |
| 46 | #include "MagickCore/cache.h" |
| 47 | #include "MagickCore/colormap-private.h" |
| 48 | #include "MagickCore/color-private.h" |
| 49 | #include "MagickCore/colormap.h" |
| 50 | #include "MagickCore/colorspace.h" |
cristy | 510d06a | 2011-07-06 23:43:54 +0000 | [diff] [blame] | 51 | #include "MagickCore/colorspace-private.h" |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 52 | #include "MagickCore/exception.h" |
| 53 | #include "MagickCore/exception-private.h" |
| 54 | #include "MagickCore/image.h" |
| 55 | #include "MagickCore/image-private.h" |
| 56 | #include "MagickCore/list.h" |
| 57 | #include "MagickCore/log.h" |
| 58 | #include "MagickCore/magick.h" |
| 59 | #include "MagickCore/memory_.h" |
| 60 | #include "MagickCore/monitor.h" |
| 61 | #include "MagickCore/monitor-private.h" |
| 62 | #include "MagickCore/pixel-accessor.h" |
| 63 | #include "MagickCore/profile.h" |
| 64 | #include "MagickCore/quantum-private.h" |
| 65 | #include "MagickCore/static.h" |
| 66 | #include "MagickCore/string_.h" |
| 67 | #include "MagickCore/module.h" |
| 68 | #include "MagickCore/transform.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 69 | |
| 70 | /* |
| 71 | Macro definitions (from Windows wingdi.h). |
| 72 | */ |
| 73 | #undef BI_JPEG |
| 74 | #define BI_JPEG 4 |
| 75 | #undef BI_PNG |
| 76 | #define BI_PNG 5 |
cristy | 0157aea | 2010-04-24 21:12:18 +0000 | [diff] [blame] | 77 | #if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__) |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 78 | #undef BI_RGB |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 79 | #define BI_RGB 0 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 80 | #undef BI_RLE8 |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 81 | #define BI_RLE8 1 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 82 | #undef BI_RLE4 |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 83 | #define BI_RLE4 2 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 84 | #undef BI_BITFIELDS |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 85 | #define BI_BITFIELDS 3 |
| 86 | |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 87 | #undef LCS_CALIBRATED_RBG |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 88 | #define LCS_CALIBRATED_RBG 0 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 89 | #undef LCS_sRGB |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 90 | #define LCS_sRGB 1 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 91 | #undef LCS_WINDOWS_COLOR_SPACE |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 92 | #define LCS_WINDOWS_COLOR_SPACE 2 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 93 | #undef PROFILE_LINKED |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 94 | #define PROFILE_LINKED 3 |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 95 | #undef PROFILE_EMBEDDED |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 96 | #define PROFILE_EMBEDDED 4 |
| 97 | |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 98 | #undef LCS_GM_BUSINESS |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 99 | #define LCS_GM_BUSINESS 1 /* Saturation */ |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 100 | #undef LCS_GM_GRAPHICS |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 101 | #define LCS_GM_GRAPHICS 2 /* Relative */ |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 102 | #undef LCS_GM_IMAGES |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 103 | #define LCS_GM_IMAGES 4 /* Perceptual */ |
cristy | 3a99dcf | 2011-12-17 01:29:40 +0000 | [diff] [blame] | 104 | #undef LCS_GM_ABS_COLORIMETRIC |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 105 | #define LCS_GM_ABS_COLORIMETRIC 8 /* Absolute */ |
| 106 | #endif |
| 107 | |
| 108 | /* |
| 109 | Typedef declarations. |
| 110 | */ |
| 111 | typedef struct _BMPInfo |
| 112 | { |
| 113 | unsigned int |
| 114 | file_size, |
| 115 | ba_offset, |
| 116 | offset_bits, |
| 117 | size; |
| 118 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 119 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 120 | width, |
| 121 | height; |
| 122 | |
| 123 | unsigned short |
| 124 | planes, |
| 125 | bits_per_pixel; |
| 126 | |
| 127 | unsigned int |
| 128 | compression, |
| 129 | image_size, |
| 130 | x_pixels, |
| 131 | y_pixels, |
| 132 | number_colors, |
| 133 | red_mask, |
| 134 | green_mask, |
| 135 | blue_mask, |
| 136 | alpha_mask, |
| 137 | colors_important; |
| 138 | |
| 139 | int |
| 140 | colorspace; |
| 141 | |
| 142 | PrimaryInfo |
| 143 | red_primary, |
| 144 | green_primary, |
| 145 | blue_primary, |
| 146 | gamma_scale; |
| 147 | } BMPInfo; |
| 148 | |
| 149 | /* |
| 150 | Forward declarations. |
| 151 | */ |
| 152 | static MagickBooleanType |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 153 | WriteBMPImage(const ImageInfo *,Image *,ExceptionInfo *); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 154 | |
| 155 | /* |
| 156 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 157 | % % |
| 158 | % % |
| 159 | % % |
| 160 | % D e c o d e I m a g e % |
| 161 | % % |
| 162 | % % |
| 163 | % % |
| 164 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 165 | % |
| 166 | % DecodeImage unpacks the packed image pixels into runlength-encoded |
| 167 | % pixel packets. |
| 168 | % |
| 169 | % The format of the DecodeImage method is: |
| 170 | % |
| 171 | % MagickBooleanType DecodeImage(Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 172 | % const size_t compression,unsigned char *pixels) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 173 | % |
| 174 | % A description of each parameter follows: |
| 175 | % |
| 176 | % o image: the address of a structure of type Image. |
| 177 | % |
| 178 | % o compression: Zero means uncompressed. A value of 1 means the |
| 179 | % compressed pixels are runlength encoded for a 256-color bitmap. |
| 180 | % A value of 2 means a 16-color bitmap. A value of 3 means bitfields |
| 181 | % encoding. |
| 182 | % |
| 183 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 184 | % the decoding process. |
| 185 | % |
| 186 | */ |
| 187 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 188 | static inline ssize_t MagickAbsoluteValue(const ssize_t x) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 189 | { |
| 190 | if (x < 0) |
| 191 | return(-x); |
| 192 | return(x); |
| 193 | } |
| 194 | |
| 195 | static inline size_t MagickMax(const size_t x,const size_t y) |
| 196 | { |
| 197 | if (x > y) |
| 198 | return(x); |
| 199 | return(y); |
| 200 | } |
| 201 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 202 | static inline ssize_t MagickMin(const ssize_t x,const ssize_t y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 203 | { |
| 204 | if (x < y) |
| 205 | return(x); |
| 206 | return(y); |
| 207 | } |
| 208 | |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 209 | static MagickBooleanType DecodeImage(Image *image,const size_t compression, |
| 210 | unsigned char *pixels) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 211 | { |
| 212 | int |
| 213 | count; |
| 214 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 215 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 216 | i, |
| 217 | x; |
| 218 | |
| 219 | register unsigned char |
| 220 | *p, |
| 221 | *q; |
| 222 | |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 223 | ssize_t |
| 224 | y; |
| 225 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 226 | unsigned char |
| 227 | byte; |
| 228 | |
| 229 | assert(image != (Image *) NULL); |
| 230 | assert(image->signature == MagickSignature); |
| 231 | if (image->debug != MagickFalse) |
| 232 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 233 | assert(pixels != (unsigned char *) NULL); |
| 234 | (void) ResetMagickMemory(pixels,0,(size_t) image->columns*image->rows* |
| 235 | sizeof(*pixels)); |
| 236 | byte=0; |
| 237 | x=0; |
| 238 | p=pixels; |
| 239 | q=pixels+(size_t) image->columns*image->rows; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 240 | for (y=0; y < (ssize_t) image->rows; ) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 241 | { |
| 242 | if ((p < pixels) || (p >= q)) |
| 243 | break; |
| 244 | count=ReadBlobByte(image); |
| 245 | if (count == EOF) |
| 246 | break; |
| 247 | if (count != 0) |
| 248 | { |
| 249 | /* |
| 250 | Encoded mode. |
| 251 | */ |
| 252 | count=MagickMin(count,(int) (q-p)); |
| 253 | byte=(unsigned char) ReadBlobByte(image); |
| 254 | if (compression == BI_RLE8) |
| 255 | { |
| 256 | for (i=0; i < count; i++) |
| 257 | *p++=(unsigned char) byte; |
| 258 | } |
| 259 | else |
| 260 | { |
| 261 | for (i=0; i < count; i++) |
| 262 | *p++=(unsigned char) |
| 263 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 264 | } |
| 265 | x+=count; |
| 266 | } |
| 267 | else |
| 268 | { |
| 269 | /* |
| 270 | Escape mode. |
| 271 | */ |
| 272 | count=ReadBlobByte(image); |
| 273 | if (count == 0x01) |
| 274 | return(MagickTrue); |
| 275 | switch (count) |
| 276 | { |
| 277 | case 0x00: |
| 278 | { |
| 279 | /* |
| 280 | End of line. |
| 281 | */ |
| 282 | x=0; |
| 283 | y++; |
| 284 | p=pixels+y*image->columns; |
| 285 | break; |
| 286 | } |
| 287 | case 0x02: |
| 288 | { |
| 289 | /* |
| 290 | Delta mode. |
| 291 | */ |
| 292 | x+=ReadBlobByte(image); |
| 293 | y+=ReadBlobByte(image); |
| 294 | p=pixels+y*image->columns+x; |
| 295 | break; |
| 296 | } |
| 297 | default: |
| 298 | { |
| 299 | /* |
| 300 | Absolute mode. |
| 301 | */ |
| 302 | count=MagickMin(count,(int) (q-p)); |
| 303 | if (compression == BI_RLE8) |
| 304 | for (i=0; i < count; i++) |
| 305 | *p++=(unsigned char) ReadBlobByte(image); |
| 306 | else |
| 307 | for (i=0; i < count; i++) |
| 308 | { |
| 309 | if ((i & 0x01) == 0) |
| 310 | byte=(unsigned char) ReadBlobByte(image); |
| 311 | *p++=(unsigned char) |
| 312 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 313 | } |
| 314 | x+=count; |
| 315 | /* |
| 316 | Read pad byte. |
| 317 | */ |
| 318 | if (compression == BI_RLE8) |
| 319 | { |
| 320 | if ((count & 0x01) != 0) |
| 321 | (void) ReadBlobByte(image); |
| 322 | } |
| 323 | else |
| 324 | if (((count & 0x03) == 1) || ((count & 0x03) == 2)) |
| 325 | (void) ReadBlobByte(image); |
| 326 | break; |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) |
| 331 | break; |
| 332 | } |
| 333 | (void) ReadBlobByte(image); /* end of line */ |
| 334 | (void) ReadBlobByte(image); |
| 335 | return(MagickTrue); |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 340 | % % |
| 341 | % % |
| 342 | % % |
| 343 | % E n c o d e I m a g e % |
| 344 | % % |
| 345 | % % |
| 346 | % % |
| 347 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 348 | % |
| 349 | % EncodeImage compresses pixels using a runlength encoded format. |
| 350 | % |
| 351 | % The format of the EncodeImage method is: |
| 352 | % |
| 353 | % static MagickBooleanType EncodeImage(Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 354 | % const size_t bytes_per_line,const unsigned char *pixels, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 355 | % unsigned char *compressed_pixels) |
| 356 | % |
| 357 | % A description of each parameter follows: |
| 358 | % |
| 359 | % o image: The image. |
| 360 | % |
| 361 | % o bytes_per_line: the number of bytes in a scanline of compressed pixels |
| 362 | % |
| 363 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 364 | % the compression process. |
| 365 | % |
| 366 | % o compressed_pixels: The address of a byte (8 bits) array of compressed |
| 367 | % pixel data. |
| 368 | % |
| 369 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 370 | static size_t EncodeImage(Image *image,const size_t bytes_per_line, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 371 | const unsigned char *pixels,unsigned char *compressed_pixels) |
| 372 | { |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 373 | MagickBooleanType |
| 374 | status; |
| 375 | |
| 376 | register const unsigned char |
| 377 | *p; |
| 378 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 379 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 380 | i, |
| 381 | x; |
| 382 | |
| 383 | register unsigned char |
| 384 | *q; |
| 385 | |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 386 | ssize_t |
| 387 | y; |
| 388 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 389 | /* |
| 390 | Runlength encode pixels. |
| 391 | */ |
| 392 | assert(image != (Image *) NULL); |
| 393 | assert(image->signature == MagickSignature); |
| 394 | if (image->debug != MagickFalse) |
| 395 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 396 | assert(pixels != (const unsigned char *) NULL); |
| 397 | assert(compressed_pixels != (unsigned char *) NULL); |
| 398 | p=pixels; |
| 399 | q=compressed_pixels; |
| 400 | i=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 401 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 402 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 403 | for (x=0; x < (ssize_t) bytes_per_line; x+=i) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 404 | { |
| 405 | /* |
| 406 | Determine runlength. |
| 407 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 408 | for (i=1; ((x+i) < (ssize_t) bytes_per_line); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 409 | if ((i == 255) || (*(p+i) != *p)) |
| 410 | break; |
| 411 | *q++=(unsigned char) i; |
| 412 | *q++=(*p); |
| 413 | p+=i; |
| 414 | } |
| 415 | /* |
| 416 | End of line. |
| 417 | */ |
| 418 | *q++=(unsigned char) 0x00; |
| 419 | *q++=(unsigned char) 0x00; |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 420 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 421 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 422 | if (status == MagickFalse) |
| 423 | break; |
| 424 | } |
| 425 | /* |
| 426 | End of bitmap. |
| 427 | */ |
| 428 | *q++=(unsigned char) 0x00; |
| 429 | *q++=(unsigned char) 0x01; |
| 430 | return((size_t) (q-compressed_pixels)); |
| 431 | } |
| 432 | |
| 433 | /* |
| 434 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 435 | % % |
| 436 | % % |
| 437 | % % |
| 438 | % I s B M P % |
| 439 | % % |
| 440 | % % |
| 441 | % % |
| 442 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 443 | % |
| 444 | % IsBMP() returns MagickTrue if the image format type, identified by the |
| 445 | % magick string, is BMP. |
| 446 | % |
| 447 | % The format of the IsBMP method is: |
| 448 | % |
| 449 | % MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 450 | % |
| 451 | % A description of each parameter follows: |
| 452 | % |
| 453 | % o magick: compare image format pattern against these bytes. |
| 454 | % |
| 455 | % o length: Specifies the length of the magick string. |
| 456 | % |
| 457 | */ |
| 458 | static MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 459 | { |
| 460 | if (length < 2) |
| 461 | return(MagickFalse); |
| 462 | if ((LocaleNCompare((char *) magick,"BA",2) == 0) || |
| 463 | (LocaleNCompare((char *) magick,"BM",2) == 0) || |
| 464 | (LocaleNCompare((char *) magick,"IC",2) == 0) || |
| 465 | (LocaleNCompare((char *) magick,"PI",2) == 0) || |
| 466 | (LocaleNCompare((char *) magick,"CI",2) == 0) || |
| 467 | (LocaleNCompare((char *) magick,"CP",2) == 0)) |
| 468 | return(MagickTrue); |
| 469 | return(MagickFalse); |
| 470 | } |
| 471 | |
| 472 | /* |
| 473 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 474 | % % |
| 475 | % % |
| 476 | % % |
| 477 | % R e a d B M P I m a g e % |
| 478 | % % |
| 479 | % % |
| 480 | % % |
| 481 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 482 | % |
| 483 | % ReadBMPImage() reads a Microsoft Windows bitmap image file, Version |
| 484 | % 2, 3 (for Windows or NT), or 4, and returns it. It allocates the memory |
| 485 | % necessary for the new Image structure and returns a pointer to the new |
| 486 | % image. |
| 487 | % |
| 488 | % The format of the ReadBMPImage method is: |
| 489 | % |
| 490 | % image=ReadBMPImage(image_info) |
| 491 | % |
| 492 | % A description of each parameter follows: |
| 493 | % |
| 494 | % o image_info: the image info. |
| 495 | % |
| 496 | % o exception: return any errors or warnings in this structure. |
| 497 | % |
| 498 | */ |
| 499 | |
| 500 | static Image *ReadBMPImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 501 | { |
| 502 | BMPInfo |
| 503 | bmp_info; |
| 504 | |
| 505 | Image |
| 506 | *image; |
| 507 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 508 | MagickBooleanType |
| 509 | status; |
| 510 | |
| 511 | MagickOffsetType |
| 512 | offset, |
| 513 | start_position; |
| 514 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 515 | Quantum |
| 516 | index; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 517 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 518 | register Quantum |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 519 | *q; |
| 520 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 521 | register ssize_t |
cristy | 0da0356 | 2011-04-23 23:23:21 +0000 | [diff] [blame] | 522 | i, |
| 523 | x; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 524 | |
| 525 | register unsigned char |
| 526 | *p; |
| 527 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 528 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 529 | bit, |
| 530 | blue, |
| 531 | bytes_per_line, |
| 532 | green, |
cristy | 0da0356 | 2011-04-23 23:23:21 +0000 | [diff] [blame] | 533 | length, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 534 | opacity, |
| 535 | red; |
| 536 | |
cristy | 0da0356 | 2011-04-23 23:23:21 +0000 | [diff] [blame] | 537 | ssize_t |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 538 | count, |
| 539 | y; |
cristy | 0da0356 | 2011-04-23 23:23:21 +0000 | [diff] [blame] | 540 | |
| 541 | unsigned char |
| 542 | magick[12], |
| 543 | *pixels; |
| 544 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 545 | /* |
| 546 | Open image file. |
| 547 | */ |
| 548 | assert(image_info != (const ImageInfo *) NULL); |
| 549 | assert(image_info->signature == MagickSignature); |
| 550 | if (image_info->debug != MagickFalse) |
| 551 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 552 | image_info->filename); |
| 553 | assert(exception != (ExceptionInfo *) NULL); |
| 554 | assert(exception->signature == MagickSignature); |
cristy | 9950d57 | 2011-10-01 18:22:35 +0000 | [diff] [blame] | 555 | image=AcquireImage(image_info,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 556 | status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| 557 | if (status == MagickFalse) |
| 558 | { |
| 559 | image=DestroyImageList(image); |
| 560 | return((Image *) NULL); |
| 561 | } |
| 562 | /* |
| 563 | Determine if this a BMP file. |
| 564 | */ |
| 565 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 566 | bmp_info.ba_offset=0; |
| 567 | start_position=0; |
| 568 | count=ReadBlob(image,2,magick); |
| 569 | do |
| 570 | { |
cristy | 101ab70 | 2011-10-13 13:06:32 +0000 | [diff] [blame] | 571 | PixelInfo |
| 572 | quantum_bits; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 573 | |
| 574 | PixelPacket |
cristy | 101ab70 | 2011-10-13 13:06:32 +0000 | [diff] [blame] | 575 | shift; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 576 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 577 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 578 | profile_data, |
| 579 | profile_size; |
| 580 | |
| 581 | /* |
| 582 | Verify BMP identifier. |
| 583 | */ |
| 584 | if (bmp_info.ba_offset == 0) |
| 585 | start_position=TellBlob(image)-2; |
| 586 | bmp_info.ba_offset=0; |
| 587 | while (LocaleNCompare((char *) magick,"BA",2) == 0) |
| 588 | { |
| 589 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 590 | bmp_info.ba_offset=ReadBlobLSBLong(image); |
| 591 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 592 | count=ReadBlob(image,2,magick); |
| 593 | if (count != 2) |
| 594 | break; |
| 595 | } |
| 596 | if (image->debug != MagickFalse) |
| 597 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," Magick: %c%c", |
| 598 | magick[0],magick[1]); |
| 599 | if ((count == 0) || ((LocaleNCompare((char *) magick,"BM",2) != 0) && |
| 600 | (LocaleNCompare((char *) magick,"CI",2) != 0))) |
| 601 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 602 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 603 | (void) ReadBlobLSBLong(image); |
| 604 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 605 | bmp_info.size=ReadBlobLSBLong(image); |
| 606 | if (image->debug != MagickFalse) |
| 607 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," BMP size: %u", |
| 608 | bmp_info.size); |
| 609 | if (bmp_info.size == 12) |
| 610 | { |
| 611 | /* |
| 612 | OS/2 BMP image file. |
| 613 | */ |
| 614 | bmp_info.width=(short) ReadBlobLSBShort(image); |
| 615 | bmp_info.height=(short) ReadBlobLSBShort(image); |
| 616 | bmp_info.planes=ReadBlobLSBShort(image); |
| 617 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 618 | bmp_info.x_pixels=0; |
| 619 | bmp_info.y_pixels=0; |
| 620 | bmp_info.number_colors=0; |
| 621 | bmp_info.compression=BI_RGB; |
| 622 | bmp_info.image_size=0; |
| 623 | bmp_info.alpha_mask=0; |
| 624 | if (image->debug != MagickFalse) |
| 625 | { |
| 626 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 627 | " Format: OS/2 Bitmap"); |
| 628 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 629 | " Geometry: %.20gx%.20g",(double) bmp_info.width,(double) |
| 630 | bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 631 | } |
| 632 | } |
| 633 | else |
| 634 | { |
| 635 | /* |
| 636 | Microsoft Windows BMP image file. |
| 637 | */ |
| 638 | if (bmp_info.size < 40) |
| 639 | ThrowReaderException(CorruptImageError,"NonOS2HeaderSizeError"); |
| 640 | bmp_info.width=(int) ReadBlobLSBLong(image); |
| 641 | bmp_info.height=(int) ReadBlobLSBLong(image); |
| 642 | bmp_info.planes=ReadBlobLSBShort(image); |
| 643 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 644 | bmp_info.compression=ReadBlobLSBLong(image); |
| 645 | bmp_info.image_size=ReadBlobLSBLong(image); |
| 646 | bmp_info.x_pixels=ReadBlobLSBLong(image); |
| 647 | bmp_info.y_pixels=ReadBlobLSBLong(image); |
| 648 | bmp_info.number_colors=ReadBlobLSBLong(image); |
| 649 | bmp_info.colors_important=ReadBlobLSBLong(image); |
| 650 | profile_data=0; |
| 651 | profile_size=0; |
| 652 | if (image->debug != MagickFalse) |
| 653 | { |
| 654 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 655 | " Format: MS Windows bitmap"); |
| 656 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 657 | " Geometry: %.20gx%.20g",(double) bmp_info.width,(double) |
| 658 | bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 659 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 660 | " Bits per pixel: %.20g",(double) bmp_info.bits_per_pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 661 | switch ((int) bmp_info.compression) |
| 662 | { |
| 663 | case BI_RGB: |
| 664 | { |
| 665 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 666 | " Compression: BI_RGB"); |
| 667 | break; |
| 668 | } |
| 669 | case BI_RLE4: |
| 670 | { |
| 671 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 672 | " Compression: BI_RLE4"); |
| 673 | break; |
| 674 | } |
| 675 | case BI_RLE8: |
| 676 | { |
| 677 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 678 | " Compression: BI_RLE8"); |
| 679 | break; |
| 680 | } |
| 681 | case BI_BITFIELDS: |
| 682 | { |
| 683 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 684 | " Compression: BI_BITFIELDS"); |
| 685 | break; |
| 686 | } |
| 687 | case BI_PNG: |
| 688 | { |
| 689 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 690 | " Compression: BI_PNG"); |
| 691 | break; |
| 692 | } |
| 693 | case BI_JPEG: |
| 694 | { |
| 695 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 696 | " Compression: BI_JPEG"); |
| 697 | break; |
| 698 | } |
| 699 | default: |
| 700 | { |
| 701 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 702 | " Compression: UNKNOWN (%u)",bmp_info.compression); |
| 703 | } |
| 704 | } |
| 705 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 706 | " Number of colors: %u",bmp_info.number_colors); |
| 707 | } |
| 708 | bmp_info.red_mask=ReadBlobLSBLong(image); |
| 709 | bmp_info.green_mask=ReadBlobLSBLong(image); |
| 710 | bmp_info.blue_mask=ReadBlobLSBLong(image); |
| 711 | if (bmp_info.size > 40) |
| 712 | { |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 713 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 714 | double |
| 715 | sum; |
| 716 | |
| 717 | /* |
| 718 | Read color management information. |
| 719 | */ |
| 720 | bmp_info.alpha_mask=ReadBlobLSBLong(image); |
cristy | 6cff05d | 2010-09-02 11:22:46 +0000 | [diff] [blame] | 721 | bmp_info.colorspace=(int) ReadBlobLSBLong(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 722 | /* |
| 723 | Decode 2^30 fixed point formatted CIE primaries. |
| 724 | */ |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 725 | # define BMP_DENOM ((double) 0x40000000) |
| 726 | bmp_info.red_primary.x=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 727 | bmp_info.red_primary.y=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 728 | bmp_info.red_primary.z=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 729 | bmp_info.green_primary.x=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 730 | bmp_info.green_primary.y=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 731 | bmp_info.green_primary.z=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 732 | bmp_info.blue_primary.x=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 733 | bmp_info.blue_primary.y=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 734 | bmp_info.blue_primary.z=(double) ReadBlobLSBLong(image)/BMP_DENOM; |
| 735 | |
glennrp | 44d4efc | 2012-11-22 03:50:51 +0000 | [diff] [blame] | 736 | sum=bmp_info.red_primary.x+bmp_info.red_primary.y+ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 737 | bmp_info.red_primary.z; |
cristy | 4629d11 | 2012-11-22 02:25:54 +0000 | [diff] [blame] | 738 | bmp_info.red_primary.x/=sum; |
| 739 | bmp_info.red_primary.y/=sum; |
| 740 | image->chromaticity.red_primary.x=bmp_info.red_primary.x; |
| 741 | image->chromaticity.red_primary.y=bmp_info.red_primary.y; |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 742 | |
glennrp | 44d4efc | 2012-11-22 03:50:51 +0000 | [diff] [blame] | 743 | sum=bmp_info.green_primary.x+bmp_info.green_primary.y+ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 744 | bmp_info.green_primary.z; |
cristy | 4629d11 | 2012-11-22 02:25:54 +0000 | [diff] [blame] | 745 | bmp_info.green_primary.x/=sum; |
| 746 | bmp_info.green_primary.y/=sum; |
| 747 | image->chromaticity.green_primary.x=bmp_info.green_primary.x; |
| 748 | image->chromaticity.green_primary.y=bmp_info.green_primary.y; |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 749 | |
glennrp | 44d4efc | 2012-11-22 03:50:51 +0000 | [diff] [blame] | 750 | sum=bmp_info.blue_primary.x+bmp_info.blue_primary.y+ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 751 | bmp_info.blue_primary.z; |
cristy | 4629d11 | 2012-11-22 02:25:54 +0000 | [diff] [blame] | 752 | bmp_info.blue_primary.x/=sum; |
| 753 | bmp_info.blue_primary.y/=sum; |
| 754 | image->chromaticity.blue_primary.x=bmp_info.blue_primary.x; |
| 755 | image->chromaticity.blue_primary.y=bmp_info.blue_primary.y; |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 756 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 757 | /* |
| 758 | Decode 16^16 fixed point formatted gamma_scales. |
| 759 | */ |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 760 | bmp_info.gamma_scale.x=(double) ReadBlobLSBLong(image)/0x10000; |
| 761 | bmp_info.gamma_scale.y=(double) ReadBlobLSBLong(image)/0x10000; |
| 762 | bmp_info.gamma_scale.z=(double) ReadBlobLSBLong(image)/0x10000; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 763 | /* |
| 764 | Compute a single gamma from the BMP 3-channel gamma. |
| 765 | */ |
| 766 | image->gamma=(bmp_info.gamma_scale.x+bmp_info.gamma_scale.y+ |
| 767 | bmp_info.gamma_scale.z)/3.0; |
| 768 | } |
glennrp | 34ea3d3 | 2012-11-22 03:57:24 +0000 | [diff] [blame^] | 769 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 770 | if (bmp_info.size > 108) |
| 771 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 772 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 773 | intent; |
| 774 | |
| 775 | /* |
| 776 | Read BMP Version 5 color management information. |
| 777 | */ |
| 778 | intent=ReadBlobLSBLong(image); |
| 779 | switch ((int) intent) |
| 780 | { |
| 781 | case LCS_GM_BUSINESS: |
| 782 | { |
| 783 | image->rendering_intent=SaturationIntent; |
| 784 | break; |
| 785 | } |
| 786 | case LCS_GM_GRAPHICS: |
| 787 | { |
| 788 | image->rendering_intent=RelativeIntent; |
| 789 | break; |
| 790 | } |
| 791 | case LCS_GM_IMAGES: |
| 792 | { |
| 793 | image->rendering_intent=PerceptualIntent; |
| 794 | break; |
| 795 | } |
| 796 | case LCS_GM_ABS_COLORIMETRIC: |
| 797 | { |
| 798 | image->rendering_intent=AbsoluteIntent; |
| 799 | break; |
| 800 | } |
| 801 | } |
| 802 | profile_data=ReadBlobLSBLong(image); |
| 803 | profile_size=ReadBlobLSBLong(image); |
cristy | da16f16 | 2011-02-19 23:52:17 +0000 | [diff] [blame] | 804 | (void) profile_data; |
| 805 | (void) profile_size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 806 | (void) ReadBlobLSBLong(image); /* Reserved byte */ |
| 807 | } |
| 808 | } |
cristy | 59eefcf | 2011-02-01 15:54:38 +0000 | [diff] [blame] | 809 | if ((MagickSizeType) bmp_info.file_size > GetBlobSize(image)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 810 | (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError, |
| 811 | "LengthAndFilesizeDoNotMatch","`%s'",image->filename); |
cristy | 59eefcf | 2011-02-01 15:54:38 +0000 | [diff] [blame] | 812 | else |
| 813 | if ((MagickSizeType) bmp_info.file_size < GetBlobSize(image)) |
| 814 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 815 | CorruptImageWarning,"LengthAndFilesizeDoNotMatch","`%s'", |
| 816 | image->filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 817 | if (bmp_info.width <= 0) |
| 818 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 819 | if (bmp_info.height == 0) |
| 820 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 821 | if (bmp_info.planes != 1) |
| 822 | ThrowReaderException(CorruptImageError,"StaticPlanesValueNotEqualToOne"); |
| 823 | if ((bmp_info.bits_per_pixel != 1) && (bmp_info.bits_per_pixel != 4) && |
| 824 | (bmp_info.bits_per_pixel != 8) && (bmp_info.bits_per_pixel != 16) && |
| 825 | (bmp_info.bits_per_pixel != 24) && (bmp_info.bits_per_pixel != 32)) |
| 826 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 827 | if (bmp_info.number_colors > (1U << bmp_info.bits_per_pixel)) |
| 828 | { |
| 829 | if (bmp_info.bits_per_pixel < 24) |
| 830 | ThrowReaderException(CorruptImageError,"UnrecognizedNumberOfColors"); |
| 831 | bmp_info.number_colors=0; |
| 832 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 833 | if ((bmp_info.compression == 1) && (bmp_info.bits_per_pixel != 8)) |
| 834 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 835 | if ((bmp_info.compression == 2) && (bmp_info.bits_per_pixel != 4)) |
| 836 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 837 | if ((bmp_info.compression == 3) && (bmp_info.bits_per_pixel < 16)) |
| 838 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 839 | switch (bmp_info.compression) |
| 840 | { |
| 841 | case BI_RGB: |
| 842 | case BI_RLE8: |
| 843 | case BI_RLE4: |
| 844 | case BI_BITFIELDS: |
| 845 | break; |
| 846 | case BI_JPEG: |
| 847 | ThrowReaderException(CoderError,"JPEGCompressNotSupported"); |
| 848 | case BI_PNG: |
| 849 | ThrowReaderException(CoderError,"PNGCompressNotSupported"); |
| 850 | default: |
| 851 | ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); |
| 852 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 853 | image->columns=(size_t) MagickAbsoluteValue(bmp_info.width); |
| 854 | image->rows=(size_t) MagickAbsoluteValue(bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 855 | image->depth=bmp_info.bits_per_pixel <= 8 ? bmp_info.bits_per_pixel : 8; |
cristy | 252f317 | 2012-11-15 12:37:50 +0000 | [diff] [blame] | 856 | image->alpha_trait=(bmp_info.alpha_mask != 0) && |
cristy | 9ed281e | 2012-11-21 17:42:58 +0000 | [diff] [blame] | 857 | (bmp_info.compression == BI_BITFIELDS) ? BlendPixelTrait : |
| 858 | UndefinedPixelTrait; |
cristy | 6a4e100 | 2010-05-26 12:48:31 +0000 | [diff] [blame] | 859 | if ((bmp_info.number_colors != 0) || (bmp_info.bits_per_pixel < 16)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 860 | { |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 861 | size_t |
| 862 | one; |
| 863 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 864 | image->storage_class=PseudoClass; |
| 865 | image->colors=bmp_info.number_colors; |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 866 | one=1; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 867 | if (image->colors == 0) |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 868 | image->colors=one << bmp_info.bits_per_pixel; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 869 | } |
| 870 | if (image->storage_class == PseudoClass) |
| 871 | { |
| 872 | unsigned char |
| 873 | *bmp_colormap; |
| 874 | |
| 875 | size_t |
| 876 | packet_size; |
| 877 | |
| 878 | /* |
| 879 | Read BMP raster colormap. |
| 880 | */ |
| 881 | if (image->debug != MagickFalse) |
| 882 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 883 | " Reading colormap of %.20g colors",(double) image->colors); |
cristy | 018f07f | 2011-09-04 21:15:19 +0000 | [diff] [blame] | 884 | if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 885 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 886 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) |
| 887 | image->colors,4*sizeof(*bmp_colormap)); |
| 888 | if (bmp_colormap == (unsigned char *) NULL) |
| 889 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 890 | if ((bmp_info.size == 12) || (bmp_info.size == 64)) |
| 891 | packet_size=3; |
| 892 | else |
| 893 | packet_size=4; |
| 894 | offset=SeekBlob(image,start_position+14+bmp_info.size,SEEK_SET); |
| 895 | if (offset < 0) |
| 896 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 897 | count=ReadBlob(image,packet_size*image->colors,bmp_colormap); |
| 898 | if (count != (ssize_t) (packet_size*image->colors)) |
| 899 | ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| 900 | p=bmp_colormap; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 901 | for (i=0; i < (ssize_t) image->colors; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 902 | { |
| 903 | image->colormap[i].blue=ScaleCharToQuantum(*p++); |
| 904 | image->colormap[i].green=ScaleCharToQuantum(*p++); |
| 905 | image->colormap[i].red=ScaleCharToQuantum(*p++); |
| 906 | if (packet_size == 4) |
| 907 | p++; |
| 908 | } |
| 909 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 910 | } |
cristy | 47b81c2 | 2012-03-29 14:19:09 +0000 | [diff] [blame] | 911 | image->resolution.x=(double) bmp_info.x_pixels/100.0; |
| 912 | image->resolution.y=(double) bmp_info.y_pixels/100.0; |
| 913 | image->units=PixelsPerCentimeterResolution; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 914 | if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| 915 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 916 | break; |
| 917 | /* |
| 918 | Read image data. |
| 919 | */ |
cristy | cd20c15 | 2012-04-09 18:57:54 +0000 | [diff] [blame] | 920 | offset=SeekBlob(image,start_position+bmp_info.offset_bits,SEEK_SET); |
| 921 | if (offset < 0) |
| 922 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 923 | if (bmp_info.compression == BI_RLE4) |
| 924 | bmp_info.bits_per_pixel<<=1; |
| 925 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 926 | length=(size_t) bytes_per_line*image->rows; |
| 927 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->rows, |
| 928 | MagickMax(bytes_per_line,image->columns+256UL)*sizeof(*pixels)); |
| 929 | if (pixels == (unsigned char *) NULL) |
| 930 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 931 | if ((bmp_info.compression == BI_RGB) || |
| 932 | (bmp_info.compression == BI_BITFIELDS)) |
| 933 | { |
| 934 | if (image->debug != MagickFalse) |
| 935 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 936 | " Reading pixels (%.20g bytes)",(double) length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 937 | count=ReadBlob(image,length,pixels); |
| 938 | if (count != (ssize_t) length) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 939 | { |
| 940 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 941 | ThrowReaderException(CorruptImageError, |
| 942 | "InsufficientImageDataInFile"); |
| 943 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 944 | } |
| 945 | else |
| 946 | { |
| 947 | /* |
| 948 | Convert run-length encoded raster pixels. |
| 949 | */ |
| 950 | status=DecodeImage(image,bmp_info.compression,pixels); |
| 951 | if (status == MagickFalse) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 952 | { |
| 953 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 954 | ThrowReaderException(CorruptImageError, |
| 955 | "UnableToRunlengthDecodeImage"); |
| 956 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 957 | } |
| 958 | /* |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 959 | Convert BMP raster image to pixel packets. |
| 960 | */ |
| 961 | if (bmp_info.compression == BI_RGB) |
| 962 | { |
cristy | c1817d5 | 2012-10-09 11:28:20 +0000 | [diff] [blame] | 963 | bmp_info.alpha_mask=image->alpha_trait == BlendPixelTrait ? |
| 964 | 0xff000000L : 0L; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 965 | bmp_info.red_mask=0x00ff0000U; |
| 966 | bmp_info.green_mask=0x0000ff00U; |
| 967 | bmp_info.blue_mask=0x000000ffU; |
| 968 | if (bmp_info.bits_per_pixel == 16) |
| 969 | { |
| 970 | /* |
| 971 | RGB555. |
| 972 | */ |
| 973 | bmp_info.red_mask=0x00007c00U; |
| 974 | bmp_info.green_mask=0x000003e0U; |
| 975 | bmp_info.blue_mask=0x0000001fU; |
| 976 | } |
| 977 | } |
| 978 | if ((bmp_info.bits_per_pixel == 16) || (bmp_info.bits_per_pixel == 32)) |
| 979 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 980 | register size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 981 | sample; |
| 982 | |
| 983 | /* |
| 984 | Get shift and quantum bits info from bitfield masks. |
| 985 | */ |
| 986 | (void) ResetMagickMemory(&shift,0,sizeof(shift)); |
| 987 | (void) ResetMagickMemory(&quantum_bits,0,sizeof(quantum_bits)); |
| 988 | if (bmp_info.red_mask != 0) |
| 989 | while (((bmp_info.red_mask << shift.red) & 0x80000000UL) == 0) |
| 990 | shift.red++; |
| 991 | if (bmp_info.green_mask != 0) |
| 992 | while (((bmp_info.green_mask << shift.green) & 0x80000000UL) == 0) |
| 993 | shift.green++; |
| 994 | if (bmp_info.blue_mask != 0) |
| 995 | while (((bmp_info.blue_mask << shift.blue) & 0x80000000UL) == 0) |
| 996 | shift.blue++; |
| 997 | if (bmp_info.alpha_mask != 0) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 998 | while (((bmp_info.alpha_mask << shift.alpha) & 0x80000000UL) == 0) |
| 999 | shift.alpha++; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1000 | sample=shift.red; |
| 1001 | while (((bmp_info.red_mask << sample) & 0x80000000UL) != 0) |
| 1002 | sample++; |
| 1003 | quantum_bits.red=(Quantum) (sample-shift.red); |
| 1004 | sample=shift.green; |
| 1005 | while (((bmp_info.green_mask << sample) & 0x80000000UL) != 0) |
| 1006 | sample++; |
| 1007 | quantum_bits.green=(Quantum) (sample-shift.green); |
| 1008 | sample=shift.blue; |
| 1009 | while (((bmp_info.blue_mask << sample) & 0x80000000UL) != 0) |
| 1010 | sample++; |
| 1011 | quantum_bits.blue=(Quantum) (sample-shift.blue); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1012 | sample=shift.alpha; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1013 | while (((bmp_info.alpha_mask << sample) & 0x80000000UL) != 0) |
| 1014 | sample++; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1015 | quantum_bits.alpha=(Quantum) (sample-shift.alpha); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1016 | } |
| 1017 | switch (bmp_info.bits_per_pixel) |
| 1018 | { |
| 1019 | case 1: |
| 1020 | { |
| 1021 | /* |
| 1022 | Convert bitmap scanline. |
| 1023 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1024 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1025 | { |
| 1026 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1027 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1028 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1029 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1030 | for (x=0; x < ((ssize_t) image->columns-7); x+=8) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1031 | { |
| 1032 | for (bit=0; bit < 8; bit++) |
| 1033 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1034 | index=(Quantum) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 1035 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1036 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1037 | } |
| 1038 | p++; |
| 1039 | } |
| 1040 | if ((image->columns % 8) != 0) |
| 1041 | { |
| 1042 | for (bit=0; bit < (image->columns % 8); bit++) |
| 1043 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1044 | index=(Quantum) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 1045 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1046 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1047 | } |
| 1048 | p++; |
| 1049 | } |
| 1050 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1051 | break; |
| 1052 | if (image->previous == (Image *) NULL) |
| 1053 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1054 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1055 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1056 | if (status == MagickFalse) |
| 1057 | break; |
| 1058 | } |
| 1059 | } |
cristy | ea1a8aa | 2011-10-20 13:24:06 +0000 | [diff] [blame] | 1060 | (void) SyncImage(image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1061 | break; |
| 1062 | } |
| 1063 | case 4: |
| 1064 | { |
| 1065 | /* |
| 1066 | Convert PseudoColor scanline. |
| 1067 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1068 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1069 | { |
| 1070 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1071 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1072 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1073 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1074 | for (x=0; x < ((ssize_t) image->columns-1); x+=2) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1075 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1076 | index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1077 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1078 | q+=GetPixelChannels(image); |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1079 | index=ConstrainColormapIndex(image,*p & 0x0f,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1080 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1081 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1082 | p++; |
| 1083 | } |
| 1084 | if ((image->columns % 2) != 0) |
| 1085 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1086 | index=ConstrainColormapIndex(image,(*p >> 4) & 0xf,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1087 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1088 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1089 | p++; |
| 1090 | } |
| 1091 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1092 | break; |
| 1093 | if (image->previous == (Image *) NULL) |
| 1094 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1095 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1096 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1097 | if (status == MagickFalse) |
| 1098 | break; |
| 1099 | } |
| 1100 | } |
cristy | ea1a8aa | 2011-10-20 13:24:06 +0000 | [diff] [blame] | 1101 | (void) SyncImage(image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1102 | break; |
| 1103 | } |
| 1104 | case 8: |
| 1105 | { |
| 1106 | /* |
| 1107 | Convert PseudoColor scanline. |
| 1108 | */ |
| 1109 | if ((bmp_info.compression == BI_RLE8) || |
| 1110 | (bmp_info.compression == BI_RLE4)) |
| 1111 | bytes_per_line=image->columns; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1112 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1113 | { |
| 1114 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1115 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1116 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1117 | break; |
cristy | caf4580 | 2012-06-16 18:28:54 +0000 | [diff] [blame] | 1118 | for (x=(ssize_t) image->columns; x != 0; --x) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1119 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1120 | index=ConstrainColormapIndex(image,*p++,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1121 | SetPixelIndex(image,index,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1122 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1123 | } |
| 1124 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1125 | break; |
| 1126 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1127 | if (image->previous == (Image *) NULL) |
| 1128 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1129 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1130 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1131 | if (status == MagickFalse) |
| 1132 | break; |
| 1133 | } |
| 1134 | } |
cristy | ea1a8aa | 2011-10-20 13:24:06 +0000 | [diff] [blame] | 1135 | (void) SyncImage(image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1136 | break; |
| 1137 | } |
| 1138 | case 16: |
| 1139 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1140 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1141 | pixel; |
| 1142 | |
| 1143 | /* |
| 1144 | Convert bitfield encoded 16-bit PseudoColor scanline. |
| 1145 | */ |
| 1146 | if (bmp_info.compression != BI_RGB && |
| 1147 | bmp_info.compression != BI_BITFIELDS) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 1148 | { |
| 1149 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1150 | ThrowReaderException(CorruptImageError, |
| 1151 | "UnrecognizedImageCompression"); |
| 1152 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1153 | bytes_per_line=2*(image->columns+image->columns % 2); |
| 1154 | image->storage_class=DirectClass; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1155 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1156 | { |
| 1157 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1158 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1159 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1160 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1161 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1162 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1163 | pixel=(size_t) (*p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1164 | pixel|=(*p++) << 8; |
| 1165 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1166 | if (quantum_bits.red == 5) |
| 1167 | red|=((red & 0xe000) >> 5); |
| 1168 | if (quantum_bits.red <= 8) |
| 1169 | red|=((red & 0xff00) >> 8); |
| 1170 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1171 | if (quantum_bits.green == 5) |
| 1172 | green|=((green & 0xe000) >> 5); |
| 1173 | if (quantum_bits.green == 6) |
| 1174 | green|=((green & 0xc000) >> 6); |
| 1175 | if (quantum_bits.green <= 8) |
| 1176 | green|=((green & 0xff00) >> 8); |
| 1177 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1178 | if (quantum_bits.blue == 5) |
| 1179 | blue|=((blue & 0xe000) >> 5); |
| 1180 | if (quantum_bits.blue <= 8) |
| 1181 | blue|=((blue & 0xff00) >> 8); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1182 | opacity=((pixel & bmp_info.alpha_mask) << shift.alpha) >> 16; |
| 1183 | if (quantum_bits.alpha <= 8) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1184 | opacity|=((opacity & 0xff00) >> 8); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1185 | SetPixelRed(image,ScaleShortToQuantum((unsigned short) red),q); |
| 1186 | SetPixelGreen(image,ScaleShortToQuantum((unsigned short) green),q); |
| 1187 | SetPixelBlue(image,ScaleShortToQuantum((unsigned short) blue),q); |
| 1188 | SetPixelAlpha(image,OpaqueAlpha,q); |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1189 | if (image->alpha_trait == BlendPixelTrait) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1190 | SetPixelAlpha(image, |
| 1191 | ScaleShortToQuantum((unsigned short) opacity),q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1192 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1193 | } |
| 1194 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1195 | break; |
| 1196 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1197 | if (image->previous == (Image *) NULL) |
| 1198 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1199 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1200 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1201 | if (status == MagickFalse) |
| 1202 | break; |
| 1203 | } |
| 1204 | } |
| 1205 | break; |
| 1206 | } |
| 1207 | case 24: |
| 1208 | { |
| 1209 | /* |
| 1210 | Convert DirectColor scanline. |
| 1211 | */ |
| 1212 | bytes_per_line=4*((image->columns*24+31)/32); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1213 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1214 | { |
| 1215 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1216 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1217 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1218 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1219 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1220 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1221 | SetPixelBlue(image,ScaleCharToQuantum(*p++),q); |
| 1222 | SetPixelGreen(image,ScaleCharToQuantum(*p++),q); |
| 1223 | SetPixelRed(image,ScaleCharToQuantum(*p++),q); |
| 1224 | SetPixelAlpha(image,OpaqueAlpha,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1225 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1226 | } |
| 1227 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1228 | break; |
| 1229 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1230 | if (image->previous == (Image *) NULL) |
| 1231 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1232 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1233 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1234 | if (status == MagickFalse) |
| 1235 | break; |
| 1236 | } |
| 1237 | } |
| 1238 | break; |
| 1239 | } |
| 1240 | case 32: |
| 1241 | { |
| 1242 | /* |
| 1243 | Convert bitfield encoded DirectColor scanline. |
| 1244 | */ |
| 1245 | if ((bmp_info.compression != BI_RGB) && |
| 1246 | (bmp_info.compression != BI_BITFIELDS)) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 1247 | { |
| 1248 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1249 | ThrowReaderException(CorruptImageError, |
| 1250 | "UnrecognizedImageCompression"); |
| 1251 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1252 | bytes_per_line=4*(image->columns); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1253 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1254 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1255 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1256 | pixel; |
| 1257 | |
| 1258 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1259 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1260 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1261 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1262 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1263 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1264 | pixel=(size_t) (*p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1265 | pixel|=(*p++ << 8); |
| 1266 | pixel|=(*p++ << 16); |
| 1267 | pixel|=(*p++ << 24); |
| 1268 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1269 | if (quantum_bits.red == 8) |
| 1270 | red|=(red >> 8); |
| 1271 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1272 | if (quantum_bits.green == 8) |
| 1273 | green|=(green >> 8); |
| 1274 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1275 | if (quantum_bits.blue == 8) |
| 1276 | blue|=(blue >> 8); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1277 | opacity=((pixel & bmp_info.alpha_mask) << shift.alpha) >> 16; |
| 1278 | if (quantum_bits.alpha == 8) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1279 | opacity|=(opacity >> 8); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1280 | SetPixelRed(image,ScaleShortToQuantum((unsigned short) red),q); |
| 1281 | SetPixelGreen(image,ScaleShortToQuantum((unsigned short) green),q); |
| 1282 | SetPixelBlue(image,ScaleShortToQuantum((unsigned short) blue),q); |
| 1283 | SetPixelAlpha(image,OpaqueAlpha,q); |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1284 | if (image->alpha_trait == BlendPixelTrait) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1285 | SetPixelAlpha(image, |
| 1286 | ScaleShortToQuantum((unsigned short) opacity),q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1287 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1288 | } |
| 1289 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1290 | break; |
| 1291 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1292 | if (image->previous == (Image *) NULL) |
| 1293 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1294 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1295 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1296 | if (status == MagickFalse) |
| 1297 | break; |
| 1298 | } |
| 1299 | } |
| 1300 | break; |
| 1301 | } |
| 1302 | default: |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 1303 | { |
| 1304 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1305 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame] | 1306 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1307 | } |
| 1308 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1309 | if (EOFBlob(image) != MagickFalse) |
| 1310 | { |
| 1311 | ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| 1312 | image->filename); |
| 1313 | break; |
| 1314 | } |
| 1315 | if (bmp_info.height < 0) |
| 1316 | { |
| 1317 | Image |
| 1318 | *flipped_image; |
| 1319 | |
| 1320 | /* |
| 1321 | Correct image orientation. |
| 1322 | */ |
| 1323 | flipped_image=FlipImage(image,exception); |
cristy | 65e3b00 | 2010-04-13 21:20:56 +0000 | [diff] [blame] | 1324 | if (flipped_image != (Image *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1325 | { |
cristy | 65e3b00 | 2010-04-13 21:20:56 +0000 | [diff] [blame] | 1326 | DuplicateBlob(flipped_image,image); |
| 1327 | image=DestroyImage(image); |
| 1328 | image=flipped_image; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1329 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1330 | } |
| 1331 | /* |
| 1332 | Proceed to next image. |
| 1333 | */ |
| 1334 | if (image_info->number_scenes != 0) |
| 1335 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 1336 | break; |
| 1337 | *magick='\0'; |
| 1338 | if (bmp_info.ba_offset != 0) |
| 1339 | { |
| 1340 | offset=SeekBlob(image,(MagickOffsetType) bmp_info.ba_offset,SEEK_SET); |
| 1341 | if (offset < 0) |
| 1342 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 1343 | } |
| 1344 | count=ReadBlob(image,2,magick); |
| 1345 | if ((count == 2) && (IsBMP(magick,2) != MagickFalse)) |
| 1346 | { |
| 1347 | /* |
| 1348 | Acquire next image structure. |
| 1349 | */ |
cristy | 9950d57 | 2011-10-01 18:22:35 +0000 | [diff] [blame] | 1350 | AcquireNextImage(image_info,image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1351 | if (GetNextImageInList(image) == (Image *) NULL) |
| 1352 | { |
| 1353 | image=DestroyImageList(image); |
| 1354 | return((Image *) NULL); |
| 1355 | } |
| 1356 | image=SyncNextImageInList(image); |
| 1357 | status=SetImageProgress(image,LoadImagesTag,TellBlob(image), |
| 1358 | GetBlobSize(image)); |
| 1359 | if (status == MagickFalse) |
| 1360 | break; |
| 1361 | } |
| 1362 | } while (IsBMP(magick,2) != MagickFalse); |
| 1363 | (void) CloseBlob(image); |
| 1364 | return(GetFirstImageInList(image)); |
| 1365 | } |
| 1366 | |
| 1367 | /* |
| 1368 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1369 | % % |
| 1370 | % % |
| 1371 | % % |
| 1372 | % R e g i s t e r B M P I m a g e % |
| 1373 | % % |
| 1374 | % % |
| 1375 | % % |
| 1376 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1377 | % |
| 1378 | % RegisterBMPImage() adds attributes for the BMP image format to |
| 1379 | % the list of supported formats. The attributes include the image format |
| 1380 | % tag, a method to read and/or write the format, whether the format |
| 1381 | % supports the saving of more than one frame to the same file or blob, |
| 1382 | % whether the format supports native in-memory I/O, and a brief |
| 1383 | % description of the format. |
| 1384 | % |
| 1385 | % The format of the RegisterBMPImage method is: |
| 1386 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1387 | % size_t RegisterBMPImage(void) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1388 | % |
| 1389 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1390 | ModuleExport size_t RegisterBMPImage(void) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1391 | { |
| 1392 | MagickInfo |
| 1393 | *entry; |
| 1394 | |
| 1395 | entry=SetMagickInfo("BMP"); |
| 1396 | entry->decoder=(DecodeImageHandler *) ReadBMPImage; |
| 1397 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1398 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2e3d524 | 2010-04-16 23:44:55 +0000 | [diff] [blame] | 1399 | entry->description=ConstantString("Microsoft Windows bitmap image"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1400 | entry->module=ConstantString("BMP"); |
| 1401 | entry->adjoin=MagickFalse; |
| 1402 | entry->seekable_stream=MagickTrue; |
| 1403 | (void) RegisterMagickInfo(entry); |
| 1404 | entry=SetMagickInfo("BMP2"); |
| 1405 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1406 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2dd92ae | 2010-04-04 16:10:59 +0000 | [diff] [blame] | 1407 | entry->description=ConstantString("Microsoft Windows bitmap image (V2)"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1408 | entry->module=ConstantString("BMP"); |
| 1409 | entry->adjoin=MagickFalse; |
| 1410 | entry->seekable_stream=MagickTrue; |
| 1411 | (void) RegisterMagickInfo(entry); |
| 1412 | entry=SetMagickInfo("BMP3"); |
| 1413 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1414 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2dd92ae | 2010-04-04 16:10:59 +0000 | [diff] [blame] | 1415 | entry->description=ConstantString("Microsoft Windows bitmap image (V3)"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1416 | entry->module=ConstantString("BMP"); |
| 1417 | entry->adjoin=MagickFalse; |
| 1418 | entry->seekable_stream=MagickTrue; |
| 1419 | (void) RegisterMagickInfo(entry); |
| 1420 | return(MagickImageCoderSignature); |
| 1421 | } |
| 1422 | |
| 1423 | /* |
| 1424 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1425 | % % |
| 1426 | % % |
| 1427 | % % |
| 1428 | % U n r e g i s t e r B M P I m a g e % |
| 1429 | % % |
| 1430 | % % |
| 1431 | % % |
| 1432 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1433 | % |
| 1434 | % UnregisterBMPImage() removes format registrations made by the |
| 1435 | % BMP module from the list of supported formats. |
| 1436 | % |
| 1437 | % The format of the UnregisterBMPImage method is: |
| 1438 | % |
| 1439 | % UnregisterBMPImage(void) |
| 1440 | % |
| 1441 | */ |
| 1442 | ModuleExport void UnregisterBMPImage(void) |
| 1443 | { |
| 1444 | (void) UnregisterMagickInfo("BMP"); |
| 1445 | (void) UnregisterMagickInfo("BMP2"); |
| 1446 | (void) UnregisterMagickInfo("BMP3"); |
| 1447 | } |
| 1448 | |
| 1449 | /* |
| 1450 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1451 | % % |
| 1452 | % % |
| 1453 | % % |
| 1454 | % W r i t e B M P I m a g e % |
| 1455 | % % |
| 1456 | % % |
| 1457 | % % |
| 1458 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1459 | % |
| 1460 | % WriteBMPImage() writes an image in Microsoft Windows bitmap encoded |
| 1461 | % image format, version 3 for Windows or (if the image has a matte channel) |
| 1462 | % version 4. |
| 1463 | % |
| 1464 | % The format of the WriteBMPImage method is: |
| 1465 | % |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1466 | % MagickBooleanType WriteBMPImage(const ImageInfo *image_info, |
| 1467 | % Image *image,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1468 | % |
| 1469 | % A description of each parameter follows. |
| 1470 | % |
| 1471 | % o image_info: the image info. |
| 1472 | % |
| 1473 | % o image: The image. |
| 1474 | % |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1475 | % o exception: return any errors or warnings in this structure. |
| 1476 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1477 | */ |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1478 | static MagickBooleanType WriteBMPImage(const ImageInfo *image_info,Image *image, |
| 1479 | ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1480 | { |
| 1481 | BMPInfo |
| 1482 | bmp_info; |
| 1483 | |
| 1484 | const StringInfo |
| 1485 | *profile; |
| 1486 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1487 | MagickBooleanType |
| 1488 | have_color_info, |
| 1489 | status; |
| 1490 | |
| 1491 | MagickOffsetType |
| 1492 | scene; |
| 1493 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1494 | register const Quantum |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1495 | *p; |
| 1496 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1497 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1498 | i, |
| 1499 | x; |
| 1500 | |
| 1501 | register unsigned char |
| 1502 | *q; |
| 1503 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1504 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1505 | bytes_per_line, |
| 1506 | type; |
| 1507 | |
cristy | 4e82e51 | 2011-04-24 01:33:42 +0000 | [diff] [blame] | 1508 | ssize_t |
| 1509 | y; |
| 1510 | |
| 1511 | unsigned char |
| 1512 | *bmp_data, |
| 1513 | *pixels; |
| 1514 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1515 | /* |
| 1516 | Open output image file. |
| 1517 | */ |
| 1518 | assert(image_info != (const ImageInfo *) NULL); |
| 1519 | assert(image_info->signature == MagickSignature); |
| 1520 | assert(image != (Image *) NULL); |
| 1521 | assert(image->signature == MagickSignature); |
| 1522 | if (image->debug != MagickFalse) |
| 1523 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
cristy | 3a37efd | 2011-08-28 20:31:03 +0000 | [diff] [blame] | 1524 | assert(exception != (ExceptionInfo *) NULL); |
| 1525 | assert(exception->signature == MagickSignature); |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1526 | status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1527 | if (status == MagickFalse) |
| 1528 | return(status); |
| 1529 | type=4; |
| 1530 | if (LocaleCompare(image_info->magick,"BMP2") == 0) |
| 1531 | type=2; |
| 1532 | else |
| 1533 | if (LocaleCompare(image_info->magick,"BMP3") == 0) |
| 1534 | type=3; |
| 1535 | scene=0; |
| 1536 | do |
| 1537 | { |
| 1538 | /* |
| 1539 | Initialize BMP raster file header. |
| 1540 | */ |
cristy | 3d9f5ba | 2012-06-26 13:37:31 +0000 | [diff] [blame] | 1541 | if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse) |
cristy | 8d95109 | 2012-02-08 18:54:56 +0000 | [diff] [blame] | 1542 | (void) TransformImageColorspace(image,sRGBColorspace,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1543 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 1544 | bmp_info.file_size=14+12; |
| 1545 | if (type > 2) |
| 1546 | bmp_info.file_size+=28; |
| 1547 | bmp_info.offset_bits=bmp_info.file_size; |
| 1548 | bmp_info.compression=BI_RGB; |
| 1549 | if ((image->storage_class == PseudoClass) && (image->colors > 256)) |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1550 | (void) SetImageStorageClass(image,DirectClass,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1551 | if (image->storage_class != DirectClass) |
| 1552 | { |
| 1553 | /* |
| 1554 | Colormapped BMP raster. |
| 1555 | */ |
| 1556 | bmp_info.bits_per_pixel=8; |
| 1557 | if (image->colors <= 2) |
| 1558 | bmp_info.bits_per_pixel=1; |
| 1559 | else |
| 1560 | if (image->colors <= 16) |
| 1561 | bmp_info.bits_per_pixel=4; |
| 1562 | else |
| 1563 | if (image->colors <= 256) |
| 1564 | bmp_info.bits_per_pixel=8; |
| 1565 | if (image_info->compression == RLECompression) |
| 1566 | bmp_info.bits_per_pixel=8; |
| 1567 | bmp_info.number_colors=1U << bmp_info.bits_per_pixel; |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1568 | if (image->alpha_trait == BlendPixelTrait) |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1569 | (void) SetImageStorageClass(image,DirectClass,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1570 | else |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1571 | if ((size_t) bmp_info.number_colors < image->colors) |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1572 | (void) SetImageStorageClass(image,DirectClass,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1573 | else |
| 1574 | { |
| 1575 | bmp_info.file_size+=3*(1UL << bmp_info.bits_per_pixel); |
| 1576 | bmp_info.offset_bits+=3*(1UL << bmp_info.bits_per_pixel); |
| 1577 | if (type > 2) |
| 1578 | { |
| 1579 | bmp_info.file_size+=(1UL << bmp_info.bits_per_pixel); |
| 1580 | bmp_info.offset_bits+=(1UL << bmp_info.bits_per_pixel); |
| 1581 | } |
| 1582 | } |
| 1583 | } |
| 1584 | if (image->storage_class == DirectClass) |
| 1585 | { |
| 1586 | /* |
| 1587 | Full color BMP raster. |
| 1588 | */ |
| 1589 | bmp_info.number_colors=0; |
| 1590 | bmp_info.bits_per_pixel=(unsigned short) |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1591 | ((type > 3) && (image->alpha_trait == BlendPixelTrait) ? 32 : 24); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1592 | bmp_info.compression=(unsigned int) ((type > 3) && |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1593 | (image->alpha_trait == BlendPixelTrait) ? BI_BITFIELDS : BI_RGB); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1594 | } |
| 1595 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 1596 | bmp_info.ba_offset=0; |
| 1597 | profile=GetImageProfile(image,"icc"); |
| 1598 | have_color_info=(image->rendering_intent != UndefinedIntent) || |
| 1599 | (profile != (StringInfo *) NULL) || (image->gamma != 0.0) ? MagickTrue : |
| 1600 | MagickFalse; |
| 1601 | if (type == 2) |
| 1602 | bmp_info.size=12; |
| 1603 | else |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1604 | if ((type == 3) || ((image->alpha_trait != BlendPixelTrait) && |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1605 | (have_color_info == MagickFalse))) |
| 1606 | { |
| 1607 | type=3; |
| 1608 | bmp_info.size=40; |
| 1609 | } |
| 1610 | else |
| 1611 | { |
| 1612 | int |
| 1613 | extra_size; |
| 1614 | |
| 1615 | bmp_info.size=108; |
| 1616 | extra_size=68; |
| 1617 | if ((image->rendering_intent != UndefinedIntent) || |
| 1618 | (profile != (StringInfo *) NULL)) |
| 1619 | { |
| 1620 | bmp_info.size=124; |
| 1621 | extra_size+=16; |
| 1622 | } |
| 1623 | bmp_info.file_size+=extra_size; |
| 1624 | bmp_info.offset_bits+=extra_size; |
| 1625 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1626 | bmp_info.width=(ssize_t) image->columns; |
| 1627 | bmp_info.height=(ssize_t) image->rows; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1628 | bmp_info.planes=1; |
| 1629 | bmp_info.image_size=(unsigned int) (bytes_per_line*image->rows); |
| 1630 | bmp_info.file_size+=bmp_info.image_size; |
| 1631 | bmp_info.x_pixels=75*39; |
| 1632 | bmp_info.y_pixels=75*39; |
| 1633 | switch (image->units) |
| 1634 | { |
| 1635 | case UndefinedResolution: |
| 1636 | case PixelsPerInchResolution: |
| 1637 | { |
cristy | 2a11bef | 2011-10-28 18:33:11 +0000 | [diff] [blame] | 1638 | bmp_info.x_pixels=(unsigned int) (100.0*image->resolution.x/2.54); |
| 1639 | bmp_info.y_pixels=(unsigned int) (100.0*image->resolution.y/2.54); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1640 | break; |
| 1641 | } |
| 1642 | case PixelsPerCentimeterResolution: |
| 1643 | { |
cristy | 2a11bef | 2011-10-28 18:33:11 +0000 | [diff] [blame] | 1644 | bmp_info.x_pixels=(unsigned int) (100.0*image->resolution.x); |
| 1645 | bmp_info.y_pixels=(unsigned int) (100.0*image->resolution.y); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1646 | break; |
| 1647 | } |
| 1648 | } |
| 1649 | bmp_info.colors_important=bmp_info.number_colors; |
| 1650 | /* |
| 1651 | Convert MIFF to BMP raster pixels. |
| 1652 | */ |
| 1653 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) bmp_info.image_size, |
| 1654 | sizeof(*pixels)); |
| 1655 | if (pixels == (unsigned char *) NULL) |
| 1656 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1657 | (void) ResetMagickMemory(pixels,0,(size_t) bmp_info.image_size); |
| 1658 | switch (bmp_info.bits_per_pixel) |
| 1659 | { |
| 1660 | case 1: |
| 1661 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1662 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1663 | bit, |
| 1664 | byte; |
| 1665 | |
| 1666 | /* |
| 1667 | Convert PseudoClass image to a BMP monochrome image. |
| 1668 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1669 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1670 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1671 | ssize_t |
| 1672 | offset; |
| 1673 | |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1674 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1675 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1676 | break; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1677 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1678 | bit=0; |
| 1679 | byte=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1680 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1681 | { |
| 1682 | byte<<=1; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1683 | byte|=GetPixelIndex(image,p) != 0 ? 0x01 : 0x00; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1684 | bit++; |
| 1685 | if (bit == 8) |
| 1686 | { |
| 1687 | *q++=(unsigned char) byte; |
| 1688 | bit=0; |
| 1689 | byte=0; |
| 1690 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1691 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1692 | } |
| 1693 | if (bit != 0) |
| 1694 | { |
| 1695 | *q++=(unsigned char) (byte << (8-bit)); |
| 1696 | x++; |
| 1697 | } |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1698 | offset=(ssize_t) (image->columns+7)/8; |
| 1699 | for (x=offset; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1700 | *q++=0x00; |
| 1701 | if (image->previous == (Image *) NULL) |
| 1702 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1703 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1704 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1705 | if (status == MagickFalse) |
| 1706 | break; |
| 1707 | } |
| 1708 | } |
| 1709 | break; |
| 1710 | } |
| 1711 | case 4: |
| 1712 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1713 | size_t |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1714 | byte, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1715 | nibble, |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1716 | offset; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1717 | |
| 1718 | /* |
| 1719 | Convert PseudoClass image to a BMP monochrome image. |
| 1720 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1721 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1722 | { |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1723 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1724 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1725 | break; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1726 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1727 | nibble=0; |
| 1728 | byte=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1729 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1730 | { |
| 1731 | byte<<=4; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1732 | byte|=((size_t) GetPixelIndex(image,p) & 0x0f); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1733 | nibble++; |
| 1734 | if (nibble == 2) |
| 1735 | { |
| 1736 | *q++=(unsigned char) byte; |
| 1737 | nibble=0; |
| 1738 | byte=0; |
| 1739 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1740 | p+=GetPixelChannels(image); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1741 | } |
| 1742 | if (nibble != 0) |
| 1743 | { |
| 1744 | *q++=(unsigned char) (byte << 4); |
| 1745 | x++; |
| 1746 | } |
| 1747 | offset=(ssize_t) (image->columns+1)/2; |
| 1748 | for (x=offset; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1749 | *q++=0x00; |
| 1750 | if (image->previous == (Image *) NULL) |
| 1751 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1752 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1753 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1754 | if (status == MagickFalse) |
| 1755 | break; |
| 1756 | } |
| 1757 | } |
| 1758 | break; |
| 1759 | } |
| 1760 | case 8: |
| 1761 | { |
| 1762 | /* |
| 1763 | Convert PseudoClass packet to BMP pixel. |
| 1764 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1765 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1766 | { |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1767 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1768 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1769 | break; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1770 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1771 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1772 | { |
| 1773 | *q++=(unsigned char) GetPixelIndex(image,p); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1774 | p+=GetPixelChannels(image); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1775 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1776 | for ( ; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1777 | *q++=0x00; |
| 1778 | if (image->previous == (Image *) NULL) |
| 1779 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1780 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1781 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1782 | if (status == MagickFalse) |
| 1783 | break; |
| 1784 | } |
| 1785 | } |
| 1786 | break; |
| 1787 | } |
| 1788 | case 24: |
| 1789 | { |
| 1790 | /* |
| 1791 | Convert DirectClass packet to BMP BGR888. |
| 1792 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1793 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1794 | { |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1795 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1796 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1797 | break; |
| 1798 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1799 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1800 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1801 | *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| 1802 | *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| 1803 | *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1804 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1805 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1806 | for (x=3L*(ssize_t) image->columns; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1807 | *q++=0x00; |
| 1808 | if (image->previous == (Image *) NULL) |
| 1809 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1810 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1811 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1812 | if (status == MagickFalse) |
| 1813 | break; |
| 1814 | } |
| 1815 | } |
| 1816 | break; |
| 1817 | } |
| 1818 | case 32: |
| 1819 | { |
| 1820 | /* |
| 1821 | Convert DirectClass packet to ARGB8888 pixel. |
| 1822 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1823 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1824 | { |
cristy | 1e178e7 | 2011-08-28 19:44:34 +0000 | [diff] [blame] | 1825 | p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1826 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1827 | break; |
| 1828 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1829 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1830 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1831 | *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| 1832 | *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| 1833 | *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| 1834 | *q++=ScaleQuantumToChar(GetPixelAlpha(image,p)); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1835 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1836 | } |
| 1837 | if (image->previous == (Image *) NULL) |
| 1838 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1839 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1840 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1841 | if (status == MagickFalse) |
| 1842 | break; |
| 1843 | } |
| 1844 | } |
| 1845 | break; |
| 1846 | } |
| 1847 | } |
| 1848 | if ((type > 2) && (bmp_info.bits_per_pixel == 8)) |
| 1849 | if (image_info->compression != NoCompression) |
| 1850 | { |
| 1851 | size_t |
| 1852 | length; |
| 1853 | |
| 1854 | /* |
| 1855 | Convert run-length encoded raster pixels. |
| 1856 | */ |
| 1857 | length=(size_t) (2*(bytes_per_line+2)*(image->rows+2)+2); |
| 1858 | bmp_data=(unsigned char *) NULL; |
| 1859 | if (~length >= bytes_per_line) |
| 1860 | bmp_data=(unsigned char *) AcquireQuantumMemory(length+ |
| 1861 | bytes_per_line,sizeof(*bmp_data)); |
| 1862 | if (bmp_data == (unsigned char *) NULL) |
| 1863 | { |
| 1864 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1865 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1866 | } |
| 1867 | bmp_info.file_size-=bmp_info.image_size; |
| 1868 | bmp_info.image_size=(unsigned int) EncodeImage(image,bytes_per_line, |
| 1869 | pixels,bmp_data); |
| 1870 | bmp_info.file_size+=bmp_info.image_size; |
| 1871 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1872 | pixels=bmp_data; |
| 1873 | bmp_info.compression=BI_RLE8; |
| 1874 | } |
| 1875 | /* |
| 1876 | Write BMP for Windows, all versions, 14-byte header. |
| 1877 | */ |
| 1878 | if (image->debug != MagickFalse) |
| 1879 | { |
| 1880 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1881 | " Writing BMP version %.20g datastream",(double) type); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1882 | if (image->storage_class == DirectClass) |
| 1883 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1884 | " Storage class=DirectClass"); |
| 1885 | else |
| 1886 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1887 | " Storage class=PseudoClass"); |
| 1888 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1889 | " Image depth=%.20g",(double) image->depth); |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1890 | if (image->alpha_trait == BlendPixelTrait) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1891 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1892 | " Matte=True"); |
| 1893 | else |
| 1894 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1895 | " Matte=MagickFalse"); |
| 1896 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1897 | " BMP bits_per_pixel=%.20g",(double) bmp_info.bits_per_pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1898 | switch ((int) bmp_info.compression) |
| 1899 | { |
| 1900 | case BI_RGB: |
| 1901 | { |
| 1902 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1903 | " Compression=BI_RGB"); |
| 1904 | break; |
| 1905 | } |
| 1906 | case BI_RLE8: |
| 1907 | { |
| 1908 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1909 | " Compression=BI_RLE8"); |
| 1910 | break; |
| 1911 | } |
| 1912 | case BI_BITFIELDS: |
| 1913 | { |
| 1914 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1915 | " Compression=BI_BITFIELDS"); |
| 1916 | break; |
| 1917 | } |
| 1918 | default: |
| 1919 | { |
| 1920 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1921 | " Compression=UNKNOWN (%u)",bmp_info.compression); |
| 1922 | break; |
| 1923 | } |
| 1924 | } |
| 1925 | if (bmp_info.number_colors == 0) |
| 1926 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1927 | " Number_colors=unspecified"); |
| 1928 | else |
| 1929 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1930 | " Number_colors=%u",bmp_info.number_colors); |
| 1931 | } |
| 1932 | (void) WriteBlob(image,2,(unsigned char *) "BM"); |
| 1933 | (void) WriteBlobLSBLong(image,bmp_info.file_size); |
| 1934 | (void) WriteBlobLSBLong(image,bmp_info.ba_offset); /* always 0 */ |
| 1935 | (void) WriteBlobLSBLong(image,bmp_info.offset_bits); |
| 1936 | if (type == 2) |
| 1937 | { |
| 1938 | /* |
| 1939 | Write 12-byte version 2 bitmap header. |
| 1940 | */ |
| 1941 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1942 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.width); |
| 1943 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.height); |
| 1944 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1945 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1946 | } |
| 1947 | else |
| 1948 | { |
| 1949 | /* |
| 1950 | Write 40-byte version 3+ bitmap header. |
| 1951 | */ |
| 1952 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1953 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.width); |
| 1954 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.height); |
| 1955 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1956 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1957 | (void) WriteBlobLSBLong(image,bmp_info.compression); |
| 1958 | (void) WriteBlobLSBLong(image,bmp_info.image_size); |
| 1959 | (void) WriteBlobLSBLong(image,bmp_info.x_pixels); |
| 1960 | (void) WriteBlobLSBLong(image,bmp_info.y_pixels); |
| 1961 | (void) WriteBlobLSBLong(image,bmp_info.number_colors); |
| 1962 | (void) WriteBlobLSBLong(image,bmp_info.colors_important); |
| 1963 | } |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1964 | if ((type > 3) && ((image->alpha_trait == BlendPixelTrait) || |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1965 | (have_color_info != MagickFalse))) |
| 1966 | { |
| 1967 | /* |
| 1968 | Write the rest of the 108-byte BMP Version 4 header. |
| 1969 | */ |
| 1970 | (void) WriteBlobLSBLong(image,0x00ff0000U); /* Red mask */ |
| 1971 | (void) WriteBlobLSBLong(image,0x0000ff00U); /* Green mask */ |
| 1972 | (void) WriteBlobLSBLong(image,0x000000ffU); /* Blue mask */ |
| 1973 | (void) WriteBlobLSBLong(image,0xff000000U); /* Alpha mask */ |
cristy | 55388ab | 2012-05-01 00:01:47 +0000 | [diff] [blame] | 1974 | (void) WriteBlobLSBLong(image,0x73524742U); /* sRGB */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1975 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1976 | (image->chromaticity.red_primary.x*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1977 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1978 | (image->chromaticity.red_primary.y*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1979 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1980 | ((1.000f-(image->chromaticity.red_primary.x+ |
| 1981 | image->chromaticity.red_primary.y))*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1982 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1983 | (image->chromaticity.green_primary.x*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1984 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1985 | (image->chromaticity.green_primary.y*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1986 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1987 | ((1.000f-(image->chromaticity.green_primary.x+ |
| 1988 | image->chromaticity.green_primary.y))*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1989 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1990 | (image->chromaticity.blue_primary.x*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1991 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1992 | (image->chromaticity.blue_primary.y*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1993 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1994 | ((1.000f-(image->chromaticity.blue_primary.x+ |
| 1995 | image->chromaticity.blue_primary.y))*0x40000000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1996 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1997 | (bmp_info.gamma_scale.x*0x10000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1998 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 1999 | (bmp_info.gamma_scale.y*0x10000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2000 | (void) WriteBlobLSBLong(image,(unsigned int) |
cristy | c554cc8 | 2012-08-12 19:55:34 +0000 | [diff] [blame] | 2001 | (bmp_info.gamma_scale.z*0x10000)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2002 | if ((image->rendering_intent != UndefinedIntent) || |
| 2003 | (profile != (StringInfo *) NULL)) |
| 2004 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2005 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2006 | intent; |
| 2007 | |
| 2008 | switch ((int) image->rendering_intent) |
| 2009 | { |
| 2010 | case SaturationIntent: |
| 2011 | { |
| 2012 | intent=LCS_GM_BUSINESS; |
| 2013 | break; |
| 2014 | } |
| 2015 | case RelativeIntent: |
| 2016 | { |
| 2017 | intent=LCS_GM_GRAPHICS; |
| 2018 | break; |
| 2019 | } |
| 2020 | case PerceptualIntent: |
| 2021 | { |
| 2022 | intent=LCS_GM_IMAGES; |
| 2023 | break; |
| 2024 | } |
| 2025 | case AbsoluteIntent: |
| 2026 | { |
| 2027 | intent=LCS_GM_ABS_COLORIMETRIC; |
| 2028 | break; |
| 2029 | } |
| 2030 | default: |
| 2031 | { |
| 2032 | intent=0; |
| 2033 | break; |
| 2034 | } |
| 2035 | } |
| 2036 | (void) WriteBlobLSBLong(image,(unsigned int) intent); |
| 2037 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile data */ |
| 2038 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile length */ |
| 2039 | (void) WriteBlobLSBLong(image,0x00); /* reserved */ |
| 2040 | } |
| 2041 | } |
| 2042 | if (image->storage_class == PseudoClass) |
| 2043 | { |
| 2044 | unsigned char |
| 2045 | *bmp_colormap; |
| 2046 | |
| 2047 | /* |
| 2048 | Dump colormap to file. |
| 2049 | */ |
| 2050 | if (image->debug != MagickFalse) |
| 2051 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 2052 | " Colormap: %.20g entries",(double) image->colors); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2053 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) (1UL << |
| 2054 | bmp_info.bits_per_pixel),4*sizeof(*bmp_colormap)); |
| 2055 | if (bmp_colormap == (unsigned char *) NULL) |
| 2056 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2057 | q=bmp_colormap; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2058 | for (i=0; i < (ssize_t) MagickMin((ssize_t) image->colors,(ssize_t) bmp_info.number_colors); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2059 | { |
| 2060 | *q++=ScaleQuantumToChar(image->colormap[i].blue); |
| 2061 | *q++=ScaleQuantumToChar(image->colormap[i].green); |
| 2062 | *q++=ScaleQuantumToChar(image->colormap[i].red); |
| 2063 | if (type > 2) |
| 2064 | *q++=(unsigned char) 0x0; |
| 2065 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2066 | for ( ; i < (ssize_t) (1UL << bmp_info.bits_per_pixel); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2067 | { |
| 2068 | *q++=(unsigned char) 0x00; |
| 2069 | *q++=(unsigned char) 0x00; |
| 2070 | *q++=(unsigned char) 0x00; |
| 2071 | if (type > 2) |
| 2072 | *q++=(unsigned char) 0x00; |
| 2073 | } |
| 2074 | if (type <= 2) |
| 2075 | (void) WriteBlob(image,(size_t) (3*(1L << bmp_info.bits_per_pixel)), |
| 2076 | bmp_colormap); |
| 2077 | else |
| 2078 | (void) WriteBlob(image,(size_t) (4*(1L << bmp_info.bits_per_pixel)), |
| 2079 | bmp_colormap); |
| 2080 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 2081 | } |
| 2082 | if (image->debug != MagickFalse) |
| 2083 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 2084 | " Pixels: %u bytes",bmp_info.image_size); |
| 2085 | (void) WriteBlob(image,(size_t) bmp_info.image_size,pixels); |
| 2086 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 2087 | if (GetNextImageInList(image) == (Image *) NULL) |
| 2088 | break; |
| 2089 | image=SyncNextImageInList(image); |
| 2090 | status=SetImageProgress(image,SaveImagesTag,scene++, |
| 2091 | GetImageListLength(image)); |
| 2092 | if (status == MagickFalse) |
| 2093 | break; |
| 2094 | } while (image_info->adjoin != MagickFalse); |
| 2095 | (void) CloseBlob(image); |
| 2096 | return(MagickTrue); |
| 2097 | } |