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 | 16af1cb | 2009-12-11 21:38:29 +0000 | [diff] [blame] | 21 | % Copyright 1999-2010 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 | */ |
| 43 | #include "magick/studio.h" |
| 44 | #include "magick/blob.h" |
| 45 | #include "magick/blob-private.h" |
| 46 | #include "magick/cache.h" |
cristy | 316d517 | 2009-09-17 19:31:25 +0000 | [diff] [blame] | 47 | #include "magick/colormap-private.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 48 | #include "magick/color-private.h" |
cristy | e7e4055 | 2010-04-24 21:34:22 +0000 | [diff] [blame] | 49 | #include "magick/colormap.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 50 | #include "magick/colorspace.h" |
| 51 | #include "magick/exception.h" |
| 52 | #include "magick/exception-private.h" |
| 53 | #include "magick/image.h" |
| 54 | #include "magick/image-private.h" |
| 55 | #include "magick/list.h" |
| 56 | #include "magick/log.h" |
| 57 | #include "magick/magick.h" |
| 58 | #include "magick/memory_.h" |
| 59 | #include "magick/monitor.h" |
| 60 | #include "magick/monitor-private.h" |
| 61 | #include "magick/profile.h" |
| 62 | #include "magick/quantum-private.h" |
| 63 | #include "magick/static.h" |
| 64 | #include "magick/string_.h" |
| 65 | #include "magick/module.h" |
| 66 | #include "magick/transform.h" |
| 67 | |
| 68 | /* |
| 69 | Macro definitions (from Windows wingdi.h). |
| 70 | */ |
| 71 | #undef BI_JPEG |
| 72 | #define BI_JPEG 4 |
| 73 | #undef BI_PNG |
| 74 | #define BI_PNG 5 |
cristy | 0157aea | 2010-04-24 21:12:18 +0000 | [diff] [blame] | 75 | #if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 76 | #define BI_RGB 0 |
| 77 | #define BI_RLE8 1 |
| 78 | #define BI_RLE4 2 |
| 79 | #define BI_BITFIELDS 3 |
| 80 | |
| 81 | #define LCS_CALIBRATED_RBG 0 |
| 82 | #define LCS_sRGB 1 |
| 83 | #define LCS_WINDOWS_COLOR_SPACE 2 |
| 84 | #define PROFILE_LINKED 3 |
| 85 | #define PROFILE_EMBEDDED 4 |
| 86 | |
| 87 | #define LCS_GM_BUSINESS 1 /* Saturation */ |
| 88 | #define LCS_GM_GRAPHICS 2 /* Relative */ |
| 89 | #define LCS_GM_IMAGES 4 /* Perceptual */ |
| 90 | #define LCS_GM_ABS_COLORIMETRIC 8 /* Absolute */ |
| 91 | #endif |
| 92 | |
| 93 | /* |
| 94 | Typedef declarations. |
| 95 | */ |
| 96 | typedef struct _BMPInfo |
| 97 | { |
| 98 | unsigned int |
| 99 | file_size, |
| 100 | ba_offset, |
| 101 | offset_bits, |
| 102 | size; |
| 103 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 104 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 105 | width, |
| 106 | height; |
| 107 | |
| 108 | unsigned short |
| 109 | planes, |
| 110 | bits_per_pixel; |
| 111 | |
| 112 | unsigned int |
| 113 | compression, |
| 114 | image_size, |
| 115 | x_pixels, |
| 116 | y_pixels, |
| 117 | number_colors, |
| 118 | red_mask, |
| 119 | green_mask, |
| 120 | blue_mask, |
| 121 | alpha_mask, |
| 122 | colors_important; |
| 123 | |
| 124 | int |
| 125 | colorspace; |
| 126 | |
| 127 | PrimaryInfo |
| 128 | red_primary, |
| 129 | green_primary, |
| 130 | blue_primary, |
| 131 | gamma_scale; |
| 132 | } BMPInfo; |
| 133 | |
| 134 | /* |
| 135 | Forward declarations. |
| 136 | */ |
| 137 | static MagickBooleanType |
| 138 | WriteBMPImage(const ImageInfo *,Image *); |
| 139 | |
| 140 | /* |
| 141 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 142 | % % |
| 143 | % % |
| 144 | % % |
| 145 | % D e c o d e I m a g e % |
| 146 | % % |
| 147 | % % |
| 148 | % % |
| 149 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 150 | % |
| 151 | % DecodeImage unpacks the packed image pixels into runlength-encoded |
| 152 | % pixel packets. |
| 153 | % |
| 154 | % The format of the DecodeImage method is: |
| 155 | % |
| 156 | % MagickBooleanType DecodeImage(Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 157 | % const size_t compression,unsigned char *pixels) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 158 | % |
| 159 | % A description of each parameter follows: |
| 160 | % |
| 161 | % o image: the address of a structure of type Image. |
| 162 | % |
| 163 | % o compression: Zero means uncompressed. A value of 1 means the |
| 164 | % compressed pixels are runlength encoded for a 256-color bitmap. |
| 165 | % A value of 2 means a 16-color bitmap. A value of 3 means bitfields |
| 166 | % encoding. |
| 167 | % |
| 168 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 169 | % the decoding process. |
| 170 | % |
| 171 | */ |
| 172 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 173 | static inline ssize_t MagickAbsoluteValue(const ssize_t x) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 174 | { |
| 175 | if (x < 0) |
| 176 | return(-x); |
| 177 | return(x); |
| 178 | } |
| 179 | |
| 180 | static inline size_t MagickMax(const size_t x,const size_t y) |
| 181 | { |
| 182 | if (x > y) |
| 183 | return(x); |
| 184 | return(y); |
| 185 | } |
| 186 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 187 | static inline ssize_t MagickMin(const ssize_t x,const ssize_t y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 188 | { |
| 189 | if (x < y) |
| 190 | return(x); |
| 191 | return(y); |
| 192 | } |
| 193 | |
| 194 | static MagickBooleanType DecodeImage(Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 195 | const size_t compression,unsigned char *pixels) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 196 | { |
| 197 | int |
| 198 | count; |
| 199 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 200 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 201 | y; |
| 202 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 203 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 204 | i, |
| 205 | x; |
| 206 | |
| 207 | register unsigned char |
| 208 | *p, |
| 209 | *q; |
| 210 | |
| 211 | unsigned char |
| 212 | byte; |
| 213 | |
| 214 | assert(image != (Image *) NULL); |
| 215 | assert(image->signature == MagickSignature); |
| 216 | if (image->debug != MagickFalse) |
| 217 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 218 | assert(pixels != (unsigned char *) NULL); |
| 219 | (void) ResetMagickMemory(pixels,0,(size_t) image->columns*image->rows* |
| 220 | sizeof(*pixels)); |
| 221 | byte=0; |
| 222 | x=0; |
| 223 | p=pixels; |
| 224 | q=pixels+(size_t) image->columns*image->rows; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 225 | for (y=0; y < (ssize_t) image->rows; ) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 226 | { |
| 227 | if ((p < pixels) || (p >= q)) |
| 228 | break; |
| 229 | count=ReadBlobByte(image); |
| 230 | if (count == EOF) |
| 231 | break; |
| 232 | if (count != 0) |
| 233 | { |
| 234 | /* |
| 235 | Encoded mode. |
| 236 | */ |
| 237 | count=MagickMin(count,(int) (q-p)); |
| 238 | byte=(unsigned char) ReadBlobByte(image); |
| 239 | if (compression == BI_RLE8) |
| 240 | { |
| 241 | for (i=0; i < count; i++) |
| 242 | *p++=(unsigned char) byte; |
| 243 | } |
| 244 | else |
| 245 | { |
| 246 | for (i=0; i < count; i++) |
| 247 | *p++=(unsigned char) |
| 248 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 249 | } |
| 250 | x+=count; |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | /* |
| 255 | Escape mode. |
| 256 | */ |
| 257 | count=ReadBlobByte(image); |
| 258 | if (count == 0x01) |
| 259 | return(MagickTrue); |
| 260 | switch (count) |
| 261 | { |
| 262 | case 0x00: |
| 263 | { |
| 264 | /* |
| 265 | End of line. |
| 266 | */ |
| 267 | x=0; |
| 268 | y++; |
| 269 | p=pixels+y*image->columns; |
| 270 | break; |
| 271 | } |
| 272 | case 0x02: |
| 273 | { |
| 274 | /* |
| 275 | Delta mode. |
| 276 | */ |
| 277 | x+=ReadBlobByte(image); |
| 278 | y+=ReadBlobByte(image); |
| 279 | p=pixels+y*image->columns+x; |
| 280 | break; |
| 281 | } |
| 282 | default: |
| 283 | { |
| 284 | /* |
| 285 | Absolute mode. |
| 286 | */ |
| 287 | count=MagickMin(count,(int) (q-p)); |
| 288 | if (compression == BI_RLE8) |
| 289 | for (i=0; i < count; i++) |
| 290 | *p++=(unsigned char) ReadBlobByte(image); |
| 291 | else |
| 292 | for (i=0; i < count; i++) |
| 293 | { |
| 294 | if ((i & 0x01) == 0) |
| 295 | byte=(unsigned char) ReadBlobByte(image); |
| 296 | *p++=(unsigned char) |
| 297 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 298 | } |
| 299 | x+=count; |
| 300 | /* |
| 301 | Read pad byte. |
| 302 | */ |
| 303 | if (compression == BI_RLE8) |
| 304 | { |
| 305 | if ((count & 0x01) != 0) |
| 306 | (void) ReadBlobByte(image); |
| 307 | } |
| 308 | else |
| 309 | if (((count & 0x03) == 1) || ((count & 0x03) == 2)) |
| 310 | (void) ReadBlobByte(image); |
| 311 | break; |
| 312 | } |
| 313 | } |
| 314 | } |
| 315 | if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) |
| 316 | break; |
| 317 | } |
| 318 | (void) ReadBlobByte(image); /* end of line */ |
| 319 | (void) ReadBlobByte(image); |
| 320 | return(MagickTrue); |
| 321 | } |
| 322 | |
| 323 | /* |
| 324 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 325 | % % |
| 326 | % % |
| 327 | % % |
| 328 | % E n c o d e I m a g e % |
| 329 | % % |
| 330 | % % |
| 331 | % % |
| 332 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 333 | % |
| 334 | % EncodeImage compresses pixels using a runlength encoded format. |
| 335 | % |
| 336 | % The format of the EncodeImage method is: |
| 337 | % |
| 338 | % static MagickBooleanType EncodeImage(Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 339 | % const size_t bytes_per_line,const unsigned char *pixels, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 340 | % unsigned char *compressed_pixels) |
| 341 | % |
| 342 | % A description of each parameter follows: |
| 343 | % |
| 344 | % o image: The image. |
| 345 | % |
| 346 | % o bytes_per_line: the number of bytes in a scanline of compressed pixels |
| 347 | % |
| 348 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 349 | % the compression process. |
| 350 | % |
| 351 | % o compressed_pixels: The address of a byte (8 bits) array of compressed |
| 352 | % pixel data. |
| 353 | % |
| 354 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 355 | static size_t EncodeImage(Image *image,const size_t bytes_per_line, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 356 | const unsigned char *pixels,unsigned char *compressed_pixels) |
| 357 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 358 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 359 | y; |
| 360 | |
| 361 | MagickBooleanType |
| 362 | status; |
| 363 | |
| 364 | register const unsigned char |
| 365 | *p; |
| 366 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 367 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 368 | i, |
| 369 | x; |
| 370 | |
| 371 | register unsigned char |
| 372 | *q; |
| 373 | |
| 374 | /* |
| 375 | Runlength encode pixels. |
| 376 | */ |
| 377 | assert(image != (Image *) NULL); |
| 378 | assert(image->signature == MagickSignature); |
| 379 | if (image->debug != MagickFalse) |
| 380 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 381 | assert(pixels != (const unsigned char *) NULL); |
| 382 | assert(compressed_pixels != (unsigned char *) NULL); |
| 383 | p=pixels; |
| 384 | q=compressed_pixels; |
| 385 | i=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 386 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 387 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 388 | for (x=0; x < (ssize_t) bytes_per_line; x+=i) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 389 | { |
| 390 | /* |
| 391 | Determine runlength. |
| 392 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 393 | for (i=1; ((x+i) < (ssize_t) bytes_per_line); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 394 | if ((i == 255) || (*(p+i) != *p)) |
| 395 | break; |
| 396 | *q++=(unsigned char) i; |
| 397 | *q++=(*p); |
| 398 | p+=i; |
| 399 | } |
| 400 | /* |
| 401 | End of line. |
| 402 | */ |
| 403 | *q++=(unsigned char) 0x00; |
| 404 | *q++=(unsigned char) 0x00; |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 405 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 406 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 407 | if (status == MagickFalse) |
| 408 | break; |
| 409 | } |
| 410 | /* |
| 411 | End of bitmap. |
| 412 | */ |
| 413 | *q++=(unsigned char) 0x00; |
| 414 | *q++=(unsigned char) 0x01; |
| 415 | return((size_t) (q-compressed_pixels)); |
| 416 | } |
| 417 | |
| 418 | /* |
| 419 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 420 | % % |
| 421 | % % |
| 422 | % % |
| 423 | % I s B M P % |
| 424 | % % |
| 425 | % % |
| 426 | % % |
| 427 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 428 | % |
| 429 | % IsBMP() returns MagickTrue if the image format type, identified by the |
| 430 | % magick string, is BMP. |
| 431 | % |
| 432 | % The format of the IsBMP method is: |
| 433 | % |
| 434 | % MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 435 | % |
| 436 | % A description of each parameter follows: |
| 437 | % |
| 438 | % o magick: compare image format pattern against these bytes. |
| 439 | % |
| 440 | % o length: Specifies the length of the magick string. |
| 441 | % |
| 442 | */ |
| 443 | static MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 444 | { |
| 445 | if (length < 2) |
| 446 | return(MagickFalse); |
| 447 | if ((LocaleNCompare((char *) magick,"BA",2) == 0) || |
| 448 | (LocaleNCompare((char *) magick,"BM",2) == 0) || |
| 449 | (LocaleNCompare((char *) magick,"IC",2) == 0) || |
| 450 | (LocaleNCompare((char *) magick,"PI",2) == 0) || |
| 451 | (LocaleNCompare((char *) magick,"CI",2) == 0) || |
| 452 | (LocaleNCompare((char *) magick,"CP",2) == 0)) |
| 453 | return(MagickTrue); |
| 454 | return(MagickFalse); |
| 455 | } |
| 456 | |
| 457 | /* |
| 458 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 459 | % % |
| 460 | % % |
| 461 | % % |
| 462 | % R e a d B M P I m a g e % |
| 463 | % % |
| 464 | % % |
| 465 | % % |
| 466 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 467 | % |
| 468 | % ReadBMPImage() reads a Microsoft Windows bitmap image file, Version |
| 469 | % 2, 3 (for Windows or NT), or 4, and returns it. It allocates the memory |
| 470 | % necessary for the new Image structure and returns a pointer to the new |
| 471 | % image. |
| 472 | % |
| 473 | % The format of the ReadBMPImage method is: |
| 474 | % |
| 475 | % image=ReadBMPImage(image_info) |
| 476 | % |
| 477 | % A description of each parameter follows: |
| 478 | % |
| 479 | % o image_info: the image info. |
| 480 | % |
| 481 | % o exception: return any errors or warnings in this structure. |
| 482 | % |
| 483 | */ |
| 484 | |
| 485 | static Image *ReadBMPImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 486 | { |
| 487 | BMPInfo |
| 488 | bmp_info; |
| 489 | |
| 490 | Image |
| 491 | *image; |
| 492 | |
| 493 | IndexPacket |
| 494 | index; |
| 495 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 496 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 497 | y; |
| 498 | |
| 499 | MagickBooleanType |
| 500 | status; |
| 501 | |
| 502 | MagickOffsetType |
| 503 | offset, |
| 504 | start_position; |
| 505 | |
| 506 | register IndexPacket |
| 507 | *indexes; |
| 508 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 509 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 510 | x; |
| 511 | |
| 512 | register PixelPacket |
| 513 | *q; |
| 514 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 515 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 516 | i; |
| 517 | |
| 518 | register unsigned char |
| 519 | *p; |
| 520 | |
| 521 | ssize_t |
| 522 | count; |
| 523 | |
| 524 | size_t |
| 525 | length; |
| 526 | |
| 527 | unsigned char |
| 528 | magick[12], |
| 529 | *pixels; |
| 530 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 531 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 532 | bit, |
| 533 | blue, |
| 534 | bytes_per_line, |
| 535 | green, |
| 536 | opacity, |
| 537 | red; |
| 538 | |
| 539 | /* |
| 540 | Open image file. |
| 541 | */ |
| 542 | assert(image_info != (const ImageInfo *) NULL); |
| 543 | assert(image_info->signature == MagickSignature); |
| 544 | if (image_info->debug != MagickFalse) |
| 545 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 546 | image_info->filename); |
| 547 | assert(exception != (ExceptionInfo *) NULL); |
| 548 | assert(exception->signature == MagickSignature); |
| 549 | image=AcquireImage(image_info); |
| 550 | status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| 551 | if (status == MagickFalse) |
| 552 | { |
| 553 | image=DestroyImageList(image); |
| 554 | return((Image *) NULL); |
| 555 | } |
| 556 | /* |
| 557 | Determine if this a BMP file. |
| 558 | */ |
| 559 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 560 | bmp_info.ba_offset=0; |
| 561 | start_position=0; |
| 562 | count=ReadBlob(image,2,magick); |
| 563 | do |
| 564 | { |
| 565 | LongPixelPacket |
| 566 | shift; |
| 567 | |
| 568 | PixelPacket |
| 569 | quantum_bits; |
| 570 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 571 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 572 | profile_data, |
| 573 | profile_size; |
| 574 | |
| 575 | /* |
| 576 | Verify BMP identifier. |
| 577 | */ |
| 578 | if (bmp_info.ba_offset == 0) |
| 579 | start_position=TellBlob(image)-2; |
| 580 | bmp_info.ba_offset=0; |
| 581 | while (LocaleNCompare((char *) magick,"BA",2) == 0) |
| 582 | { |
| 583 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 584 | bmp_info.ba_offset=ReadBlobLSBLong(image); |
| 585 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 586 | count=ReadBlob(image,2,magick); |
| 587 | if (count != 2) |
| 588 | break; |
| 589 | } |
| 590 | if (image->debug != MagickFalse) |
| 591 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," Magick: %c%c", |
| 592 | magick[0],magick[1]); |
| 593 | if ((count == 0) || ((LocaleNCompare((char *) magick,"BM",2) != 0) && |
| 594 | (LocaleNCompare((char *) magick,"CI",2) != 0))) |
| 595 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 596 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 597 | (void) ReadBlobLSBLong(image); |
| 598 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 599 | bmp_info.size=ReadBlobLSBLong(image); |
| 600 | if (image->debug != MagickFalse) |
| 601 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," BMP size: %u", |
| 602 | bmp_info.size); |
| 603 | if (bmp_info.size == 12) |
| 604 | { |
| 605 | /* |
| 606 | OS/2 BMP image file. |
| 607 | */ |
| 608 | bmp_info.width=(short) ReadBlobLSBShort(image); |
| 609 | bmp_info.height=(short) ReadBlobLSBShort(image); |
| 610 | bmp_info.planes=ReadBlobLSBShort(image); |
| 611 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 612 | bmp_info.x_pixels=0; |
| 613 | bmp_info.y_pixels=0; |
| 614 | bmp_info.number_colors=0; |
| 615 | bmp_info.compression=BI_RGB; |
| 616 | bmp_info.image_size=0; |
| 617 | bmp_info.alpha_mask=0; |
| 618 | if (image->debug != MagickFalse) |
| 619 | { |
| 620 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 621 | " Format: OS/2 Bitmap"); |
| 622 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 623 | " Geometry: %.20gx%.20g",(double) bmp_info.width,(double) |
| 624 | bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 625 | } |
| 626 | } |
| 627 | else |
| 628 | { |
| 629 | /* |
| 630 | Microsoft Windows BMP image file. |
| 631 | */ |
| 632 | if (bmp_info.size < 40) |
| 633 | ThrowReaderException(CorruptImageError,"NonOS2HeaderSizeError"); |
| 634 | bmp_info.width=(int) ReadBlobLSBLong(image); |
| 635 | bmp_info.height=(int) ReadBlobLSBLong(image); |
| 636 | bmp_info.planes=ReadBlobLSBShort(image); |
| 637 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 638 | bmp_info.compression=ReadBlobLSBLong(image); |
| 639 | bmp_info.image_size=ReadBlobLSBLong(image); |
| 640 | bmp_info.x_pixels=ReadBlobLSBLong(image); |
| 641 | bmp_info.y_pixels=ReadBlobLSBLong(image); |
| 642 | bmp_info.number_colors=ReadBlobLSBLong(image); |
| 643 | bmp_info.colors_important=ReadBlobLSBLong(image); |
| 644 | profile_data=0; |
| 645 | profile_size=0; |
| 646 | if (image->debug != MagickFalse) |
| 647 | { |
| 648 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 649 | " Format: MS Windows bitmap"); |
| 650 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 651 | " Geometry: %.20gx%.20g",(double) bmp_info.width,(double) |
| 652 | bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 653 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 654 | " Bits per pixel: %.20g",(double) bmp_info.bits_per_pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 655 | switch ((int) bmp_info.compression) |
| 656 | { |
| 657 | case BI_RGB: |
| 658 | { |
| 659 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 660 | " Compression: BI_RGB"); |
| 661 | break; |
| 662 | } |
| 663 | case BI_RLE4: |
| 664 | { |
| 665 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 666 | " Compression: BI_RLE4"); |
| 667 | break; |
| 668 | } |
| 669 | case BI_RLE8: |
| 670 | { |
| 671 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 672 | " Compression: BI_RLE8"); |
| 673 | break; |
| 674 | } |
| 675 | case BI_BITFIELDS: |
| 676 | { |
| 677 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 678 | " Compression: BI_BITFIELDS"); |
| 679 | break; |
| 680 | } |
| 681 | case BI_PNG: |
| 682 | { |
| 683 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 684 | " Compression: BI_PNG"); |
| 685 | break; |
| 686 | } |
| 687 | case BI_JPEG: |
| 688 | { |
| 689 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 690 | " Compression: BI_JPEG"); |
| 691 | break; |
| 692 | } |
| 693 | default: |
| 694 | { |
| 695 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 696 | " Compression: UNKNOWN (%u)",bmp_info.compression); |
| 697 | } |
| 698 | } |
| 699 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 700 | " Number of colors: %u",bmp_info.number_colors); |
| 701 | } |
| 702 | bmp_info.red_mask=ReadBlobLSBLong(image); |
| 703 | bmp_info.green_mask=ReadBlobLSBLong(image); |
| 704 | bmp_info.blue_mask=ReadBlobLSBLong(image); |
| 705 | if (bmp_info.size > 40) |
| 706 | { |
| 707 | double |
| 708 | sum; |
| 709 | |
| 710 | /* |
| 711 | Read color management information. |
| 712 | */ |
| 713 | bmp_info.alpha_mask=ReadBlobLSBLong(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 714 | bmp_info.colorspace=(ssize_t) ReadBlobLSBLong(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 715 | /* |
| 716 | Decode 2^30 fixed point formatted CIE primaries. |
| 717 | */ |
| 718 | bmp_info.red_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 719 | bmp_info.red_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 720 | bmp_info.red_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 721 | bmp_info.green_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 722 | bmp_info.green_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 723 | bmp_info.green_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 724 | bmp_info.blue_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 725 | bmp_info.blue_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 726 | bmp_info.blue_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 727 | sum=bmp_info.red_primary.x+bmp_info.red_primary.x+ |
| 728 | bmp_info.red_primary.z; |
| 729 | image->chromaticity.red_primary.x/=sum; |
| 730 | image->chromaticity.red_primary.y/=sum; |
| 731 | sum=bmp_info.green_primary.x+bmp_info.green_primary.x+ |
| 732 | bmp_info.green_primary.z; |
| 733 | image->chromaticity.green_primary.x/=sum; |
| 734 | image->chromaticity.green_primary.y/=sum; |
| 735 | sum=bmp_info.blue_primary.x+bmp_info.blue_primary.x+ |
| 736 | bmp_info.blue_primary.z; |
| 737 | image->chromaticity.blue_primary.x/=sum; |
| 738 | image->chromaticity.blue_primary.y/=sum; |
| 739 | /* |
| 740 | Decode 16^16 fixed point formatted gamma_scales. |
| 741 | */ |
| 742 | bmp_info.gamma_scale.x=(double) ReadBlobLSBLong(image)/0xffff; |
| 743 | bmp_info.gamma_scale.y=(double) ReadBlobLSBLong(image)/0xffff; |
| 744 | bmp_info.gamma_scale.z=(double) ReadBlobLSBLong(image)/0xffff; |
| 745 | /* |
| 746 | Compute a single gamma from the BMP 3-channel gamma. |
| 747 | */ |
| 748 | image->gamma=(bmp_info.gamma_scale.x+bmp_info.gamma_scale.y+ |
| 749 | bmp_info.gamma_scale.z)/3.0; |
| 750 | } |
| 751 | if (bmp_info.size > 108) |
| 752 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 753 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 754 | intent; |
| 755 | |
| 756 | /* |
| 757 | Read BMP Version 5 color management information. |
| 758 | */ |
| 759 | intent=ReadBlobLSBLong(image); |
| 760 | switch ((int) intent) |
| 761 | { |
| 762 | case LCS_GM_BUSINESS: |
| 763 | { |
| 764 | image->rendering_intent=SaturationIntent; |
| 765 | break; |
| 766 | } |
| 767 | case LCS_GM_GRAPHICS: |
| 768 | { |
| 769 | image->rendering_intent=RelativeIntent; |
| 770 | break; |
| 771 | } |
| 772 | case LCS_GM_IMAGES: |
| 773 | { |
| 774 | image->rendering_intent=PerceptualIntent; |
| 775 | break; |
| 776 | } |
| 777 | case LCS_GM_ABS_COLORIMETRIC: |
| 778 | { |
| 779 | image->rendering_intent=AbsoluteIntent; |
| 780 | break; |
| 781 | } |
| 782 | } |
| 783 | profile_data=ReadBlobLSBLong(image); |
| 784 | profile_size=ReadBlobLSBLong(image); |
| 785 | (void) ReadBlobLSBLong(image); /* Reserved byte */ |
| 786 | } |
| 787 | } |
| 788 | if ((bmp_info.compression != BI_RGB) && |
| 789 | ((MagickSizeType) bmp_info.file_size != GetBlobSize(image))) |
| 790 | (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError, |
| 791 | "LengthAndFilesizeDoNotMatch","`%s'",image->filename); |
| 792 | if (bmp_info.width <= 0) |
| 793 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 794 | if (bmp_info.height == 0) |
| 795 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 796 | if (bmp_info.planes != 1) |
| 797 | ThrowReaderException(CorruptImageError,"StaticPlanesValueNotEqualToOne"); |
| 798 | if ((bmp_info.bits_per_pixel != 1) && (bmp_info.bits_per_pixel != 4) && |
| 799 | (bmp_info.bits_per_pixel != 8) && (bmp_info.bits_per_pixel != 16) && |
| 800 | (bmp_info.bits_per_pixel != 24) && (bmp_info.bits_per_pixel != 32)) |
| 801 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 802 | if (bmp_info.number_colors > (1U << bmp_info.bits_per_pixel)) |
| 803 | { |
| 804 | if (bmp_info.bits_per_pixel < 24) |
| 805 | ThrowReaderException(CorruptImageError,"UnrecognizedNumberOfColors"); |
| 806 | bmp_info.number_colors=0; |
| 807 | } |
| 808 | if (bmp_info.compression > 3) |
| 809 | ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); |
| 810 | if ((bmp_info.compression == 1) && (bmp_info.bits_per_pixel != 8)) |
| 811 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 812 | if ((bmp_info.compression == 2) && (bmp_info.bits_per_pixel != 4)) |
| 813 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 814 | if ((bmp_info.compression == 3) && (bmp_info.bits_per_pixel < 16)) |
| 815 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 816 | switch (bmp_info.compression) |
| 817 | { |
| 818 | case BI_RGB: |
| 819 | case BI_RLE8: |
| 820 | case BI_RLE4: |
| 821 | case BI_BITFIELDS: |
| 822 | break; |
| 823 | case BI_JPEG: |
| 824 | ThrowReaderException(CoderError,"JPEGCompressNotSupported"); |
| 825 | case BI_PNG: |
| 826 | ThrowReaderException(CoderError,"PNGCompressNotSupported"); |
| 827 | default: |
| 828 | ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); |
| 829 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 830 | image->columns=(size_t) MagickAbsoluteValue(bmp_info.width); |
| 831 | image->rows=(size_t) MagickAbsoluteValue(bmp_info.height); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 832 | image->depth=bmp_info.bits_per_pixel <= 8 ? bmp_info.bits_per_pixel : 8; |
cristy | aeb2cbc | 2010-05-07 13:28:58 +0000 | [diff] [blame] | 833 | if ((bmp_info.bits_per_pixel == 16) || |
| 834 | (bmp_info.bits_per_pixel == 32)) |
| 835 | image->matte=bmp_info.alpha_mask != 0 ? MagickTrue : MagickFalse; |
cristy | 6a4e100 | 2010-05-26 12:48:31 +0000 | [diff] [blame] | 836 | if ((bmp_info.number_colors != 0) || (bmp_info.bits_per_pixel < 16)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 837 | { |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 838 | size_t |
| 839 | one; |
| 840 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 841 | image->storage_class=PseudoClass; |
| 842 | image->colors=bmp_info.number_colors; |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 843 | one=1; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 844 | if (image->colors == 0) |
cristy | 0b29b25 | 2010-05-30 01:59:46 +0000 | [diff] [blame] | 845 | image->colors=one << bmp_info.bits_per_pixel; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 846 | } |
| 847 | if (image->storage_class == PseudoClass) |
| 848 | { |
| 849 | unsigned char |
| 850 | *bmp_colormap; |
| 851 | |
| 852 | size_t |
| 853 | packet_size; |
| 854 | |
| 855 | /* |
| 856 | Read BMP raster colormap. |
| 857 | */ |
| 858 | if (image->debug != MagickFalse) |
| 859 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 860 | " Reading colormap of %.20g colors",(double) image->colors); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 861 | if (AcquireImageColormap(image,image->colors) == MagickFalse) |
| 862 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 863 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) |
| 864 | image->colors,4*sizeof(*bmp_colormap)); |
| 865 | if (bmp_colormap == (unsigned char *) NULL) |
| 866 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 867 | if ((bmp_info.size == 12) || (bmp_info.size == 64)) |
| 868 | packet_size=3; |
| 869 | else |
| 870 | packet_size=4; |
| 871 | offset=SeekBlob(image,start_position+14+bmp_info.size,SEEK_SET); |
| 872 | if (offset < 0) |
| 873 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 874 | count=ReadBlob(image,packet_size*image->colors,bmp_colormap); |
| 875 | if (count != (ssize_t) (packet_size*image->colors)) |
| 876 | ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| 877 | p=bmp_colormap; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 878 | for (i=0; i < (ssize_t) image->colors; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 879 | { |
| 880 | image->colormap[i].blue=ScaleCharToQuantum(*p++); |
| 881 | image->colormap[i].green=ScaleCharToQuantum(*p++); |
| 882 | image->colormap[i].red=ScaleCharToQuantum(*p++); |
| 883 | if (packet_size == 4) |
| 884 | p++; |
| 885 | } |
| 886 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 887 | } |
| 888 | if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| 889 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 890 | break; |
| 891 | /* |
| 892 | Read image data. |
| 893 | */ |
| 894 | offset=SeekBlob(image,start_position+bmp_info.offset_bits,SEEK_SET); |
| 895 | if (offset < 0) |
| 896 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 897 | if (bmp_info.compression == BI_RLE4) |
| 898 | bmp_info.bits_per_pixel<<=1; |
| 899 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 900 | length=(size_t) bytes_per_line*image->rows; |
| 901 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->rows, |
| 902 | MagickMax(bytes_per_line,image->columns+256UL)*sizeof(*pixels)); |
| 903 | if (pixels == (unsigned char *) NULL) |
| 904 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 905 | if ((bmp_info.compression == BI_RGB) || |
| 906 | (bmp_info.compression == BI_BITFIELDS)) |
| 907 | { |
| 908 | if (image->debug != MagickFalse) |
| 909 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 910 | " Reading pixels (%.20g bytes)",(double) length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 911 | count=ReadBlob(image,length,pixels); |
| 912 | if (count != (ssize_t) length) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 913 | { |
| 914 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 915 | ThrowReaderException(CorruptImageError, |
| 916 | "InsufficientImageDataInFile"); |
| 917 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 918 | } |
| 919 | else |
| 920 | { |
| 921 | /* |
| 922 | Convert run-length encoded raster pixels. |
| 923 | */ |
| 924 | status=DecodeImage(image,bmp_info.compression,pixels); |
| 925 | if (status == MagickFalse) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 926 | { |
| 927 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 928 | ThrowReaderException(CorruptImageError, |
| 929 | "UnableToRunlengthDecodeImage"); |
| 930 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 931 | } |
| 932 | /* |
| 933 | Initialize image structure. |
| 934 | */ |
| 935 | image->x_resolution=(double) bmp_info.x_pixels/100.0; |
| 936 | image->y_resolution=(double) bmp_info.y_pixels/100.0; |
| 937 | image->units=PixelsPerCentimeterResolution; |
| 938 | /* |
| 939 | Convert BMP raster image to pixel packets. |
| 940 | */ |
| 941 | if (bmp_info.compression == BI_RGB) |
| 942 | { |
| 943 | bmp_info.alpha_mask=0; |
| 944 | bmp_info.red_mask=0x00ff0000U; |
| 945 | bmp_info.green_mask=0x0000ff00U; |
| 946 | bmp_info.blue_mask=0x000000ffU; |
| 947 | if (bmp_info.bits_per_pixel == 16) |
| 948 | { |
| 949 | /* |
| 950 | RGB555. |
| 951 | */ |
| 952 | bmp_info.red_mask=0x00007c00U; |
| 953 | bmp_info.green_mask=0x000003e0U; |
| 954 | bmp_info.blue_mask=0x0000001fU; |
| 955 | } |
| 956 | } |
| 957 | if ((bmp_info.bits_per_pixel == 16) || (bmp_info.bits_per_pixel == 32)) |
| 958 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 959 | register size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 960 | sample; |
| 961 | |
| 962 | /* |
| 963 | Get shift and quantum bits info from bitfield masks. |
| 964 | */ |
| 965 | (void) ResetMagickMemory(&shift,0,sizeof(shift)); |
| 966 | (void) ResetMagickMemory(&quantum_bits,0,sizeof(quantum_bits)); |
| 967 | if (bmp_info.red_mask != 0) |
| 968 | while (((bmp_info.red_mask << shift.red) & 0x80000000UL) == 0) |
| 969 | shift.red++; |
| 970 | if (bmp_info.green_mask != 0) |
| 971 | while (((bmp_info.green_mask << shift.green) & 0x80000000UL) == 0) |
| 972 | shift.green++; |
| 973 | if (bmp_info.blue_mask != 0) |
| 974 | while (((bmp_info.blue_mask << shift.blue) & 0x80000000UL) == 0) |
| 975 | shift.blue++; |
| 976 | if (bmp_info.alpha_mask != 0) |
| 977 | while (((bmp_info.alpha_mask << shift.opacity) & 0x80000000UL) == 0) |
| 978 | shift.opacity++; |
| 979 | sample=shift.red; |
| 980 | while (((bmp_info.red_mask << sample) & 0x80000000UL) != 0) |
| 981 | sample++; |
| 982 | quantum_bits.red=(Quantum) (sample-shift.red); |
| 983 | sample=shift.green; |
| 984 | while (((bmp_info.green_mask << sample) & 0x80000000UL) != 0) |
| 985 | sample++; |
| 986 | quantum_bits.green=(Quantum) (sample-shift.green); |
| 987 | sample=shift.blue; |
| 988 | while (((bmp_info.blue_mask << sample) & 0x80000000UL) != 0) |
| 989 | sample++; |
| 990 | quantum_bits.blue=(Quantum) (sample-shift.blue); |
| 991 | sample=shift.opacity; |
| 992 | while (((bmp_info.alpha_mask << sample) & 0x80000000UL) != 0) |
| 993 | sample++; |
| 994 | quantum_bits.opacity=(Quantum) (sample-shift.opacity); |
| 995 | } |
| 996 | switch (bmp_info.bits_per_pixel) |
| 997 | { |
| 998 | case 1: |
| 999 | { |
| 1000 | /* |
| 1001 | Convert bitmap scanline. |
| 1002 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1003 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1004 | { |
| 1005 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1006 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1007 | if (q == (PixelPacket *) NULL) |
| 1008 | break; |
| 1009 | indexes=GetAuthenticIndexQueue(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1010 | for (x=0; x < ((ssize_t) image->columns-7); x+=8) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1011 | { |
| 1012 | for (bit=0; bit < 8; bit++) |
| 1013 | { |
| 1014 | index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 1015 | indexes[x+bit]=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1016 | *q++=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1017 | } |
| 1018 | p++; |
| 1019 | } |
| 1020 | if ((image->columns % 8) != 0) |
| 1021 | { |
| 1022 | for (bit=0; bit < (image->columns % 8); bit++) |
| 1023 | { |
| 1024 | index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 1025 | indexes[x+bit]=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1026 | *q++=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1027 | } |
| 1028 | p++; |
| 1029 | } |
| 1030 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1031 | break; |
| 1032 | if (image->previous == (Image *) NULL) |
| 1033 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1034 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1035 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1036 | if (status == MagickFalse) |
| 1037 | break; |
| 1038 | } |
| 1039 | } |
| 1040 | break; |
| 1041 | } |
| 1042 | case 4: |
| 1043 | { |
| 1044 | /* |
| 1045 | Convert PseudoColor scanline. |
| 1046 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1047 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1048 | { |
| 1049 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1050 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1051 | if (q == (PixelPacket *) NULL) |
| 1052 | break; |
| 1053 | indexes=GetAuthenticIndexQueue(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1054 | for (x=0; x < ((ssize_t) image->columns-1); x+=2) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1055 | { |
| 1056 | index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f); |
| 1057 | indexes[x]=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1058 | *q++=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1059 | index=ConstrainColormapIndex(image,*p & 0x0f); |
| 1060 | indexes[x+1]=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1061 | *q++=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1062 | p++; |
| 1063 | } |
| 1064 | if ((image->columns % 2) != 0) |
| 1065 | { |
| 1066 | index=ConstrainColormapIndex(image,(*p >> 4) & 0xf); |
| 1067 | indexes[x]=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1068 | *q++=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1069 | p++; |
| 1070 | } |
| 1071 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1072 | break; |
| 1073 | if (image->previous == (Image *) NULL) |
| 1074 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1075 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1076 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1077 | if (status == MagickFalse) |
| 1078 | break; |
| 1079 | } |
| 1080 | } |
| 1081 | break; |
| 1082 | } |
| 1083 | case 8: |
| 1084 | { |
| 1085 | /* |
| 1086 | Convert PseudoColor scanline. |
| 1087 | */ |
| 1088 | if ((bmp_info.compression == BI_RLE8) || |
| 1089 | (bmp_info.compression == BI_RLE4)) |
| 1090 | bytes_per_line=image->columns; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1091 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1092 | { |
| 1093 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1094 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1095 | if (q == (PixelPacket *) NULL) |
| 1096 | break; |
| 1097 | indexes=GetAuthenticIndexQueue(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1098 | for (x = (ssize_t)image->columns; x != 0; --x) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1099 | { |
| 1100 | index=ConstrainColormapIndex(image,*p); |
| 1101 | *indexes++=index; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1102 | *q=image->colormap[(ssize_t) index]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1103 | p++; |
| 1104 | q++; |
| 1105 | } |
| 1106 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1107 | break; |
| 1108 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1109 | if (image->previous == (Image *) NULL) |
| 1110 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1111 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1112 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1113 | if (status == MagickFalse) |
| 1114 | break; |
| 1115 | } |
| 1116 | } |
| 1117 | break; |
| 1118 | } |
| 1119 | case 16: |
| 1120 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1121 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1122 | pixel; |
| 1123 | |
| 1124 | /* |
| 1125 | Convert bitfield encoded 16-bit PseudoColor scanline. |
| 1126 | */ |
| 1127 | if (bmp_info.compression != BI_RGB && |
| 1128 | bmp_info.compression != BI_BITFIELDS) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 1129 | { |
| 1130 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1131 | ThrowReaderException(CorruptImageError, |
| 1132 | "UnrecognizedImageCompression"); |
| 1133 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1134 | bytes_per_line=2*(image->columns+image->columns % 2); |
| 1135 | image->storage_class=DirectClass; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1136 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1137 | { |
| 1138 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1139 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1140 | if (q == (PixelPacket *) NULL) |
| 1141 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1142 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1143 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1144 | pixel=(size_t) (*p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1145 | pixel|=(*p++) << 8; |
| 1146 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1147 | if (quantum_bits.red == 5) |
| 1148 | red|=((red & 0xe000) >> 5); |
| 1149 | if (quantum_bits.red <= 8) |
| 1150 | red|=((red & 0xff00) >> 8); |
| 1151 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1152 | if (quantum_bits.green == 5) |
| 1153 | green|=((green & 0xe000) >> 5); |
| 1154 | if (quantum_bits.green == 6) |
| 1155 | green|=((green & 0xc000) >> 6); |
| 1156 | if (quantum_bits.green <= 8) |
| 1157 | green|=((green & 0xff00) >> 8); |
| 1158 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1159 | if (quantum_bits.blue == 5) |
| 1160 | blue|=((blue & 0xe000) >> 5); |
| 1161 | if (quantum_bits.blue <= 8) |
| 1162 | blue|=((blue & 0xff00) >> 8); |
| 1163 | opacity=((pixel & bmp_info.alpha_mask) << shift.opacity) >> 16; |
| 1164 | if (quantum_bits.opacity <= 8) |
| 1165 | opacity|=((opacity & 0xff00) >> 8); |
| 1166 | q->red=ScaleShortToQuantum((unsigned short) red); |
| 1167 | q->green=ScaleShortToQuantum((unsigned short) green); |
| 1168 | q->blue=ScaleShortToQuantum((unsigned short) blue); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1169 | SetOpacityPixelComponent(q,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1170 | if (image->matte != MagickFalse) |
cristy | ce8c277 | 2010-02-26 23:43:26 +0000 | [diff] [blame] | 1171 | q->opacity=ScaleShortToQuantum((unsigned short) (65535-opacity)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1172 | q++; |
| 1173 | } |
| 1174 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1175 | break; |
| 1176 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1177 | if (image->previous == (Image *) NULL) |
| 1178 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1179 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1180 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1181 | if (status == MagickFalse) |
| 1182 | break; |
| 1183 | } |
| 1184 | } |
| 1185 | break; |
| 1186 | } |
| 1187 | case 24: |
| 1188 | { |
| 1189 | /* |
| 1190 | Convert DirectColor scanline. |
| 1191 | */ |
| 1192 | bytes_per_line=4*((image->columns*24+31)/32); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1193 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1194 | { |
| 1195 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1196 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1197 | if (q == (PixelPacket *) NULL) |
| 1198 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1199 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1200 | { |
| 1201 | q->blue=ScaleCharToQuantum(*p++); |
| 1202 | q->green=ScaleCharToQuantum(*p++); |
| 1203 | q->red=ScaleCharToQuantum(*p++); |
cristy | fe12d6c | 2010-05-07 01:38:41 +0000 | [diff] [blame] | 1204 | SetOpacityPixelComponent(q,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1205 | q++; |
| 1206 | } |
| 1207 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1208 | break; |
| 1209 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1210 | if (image->previous == (Image *) NULL) |
| 1211 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1212 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1213 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1214 | if (status == MagickFalse) |
| 1215 | break; |
| 1216 | } |
| 1217 | } |
| 1218 | break; |
| 1219 | } |
| 1220 | case 32: |
| 1221 | { |
| 1222 | /* |
| 1223 | Convert bitfield encoded DirectColor scanline. |
| 1224 | */ |
| 1225 | if ((bmp_info.compression != BI_RGB) && |
| 1226 | (bmp_info.compression != BI_BITFIELDS)) |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 1227 | { |
| 1228 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1229 | ThrowReaderException(CorruptImageError, |
| 1230 | "UnrecognizedImageCompression"); |
| 1231 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1232 | bytes_per_line=4*(image->columns); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1233 | for (y=(ssize_t) image->rows-1; y >= 0; y--) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1234 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1235 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1236 | pixel; |
| 1237 | |
| 1238 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1239 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1240 | if (q == (PixelPacket *) NULL) |
| 1241 | break; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1242 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1243 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1244 | pixel=(size_t) (*p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1245 | pixel|=(*p++ << 8); |
| 1246 | pixel|=(*p++ << 16); |
| 1247 | pixel|=(*p++ << 24); |
| 1248 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1249 | if (quantum_bits.red == 8) |
| 1250 | red|=(red >> 8); |
| 1251 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1252 | if (quantum_bits.green == 8) |
| 1253 | green|=(green >> 8); |
| 1254 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1255 | if (quantum_bits.blue == 8) |
| 1256 | blue|=(blue >> 8); |
| 1257 | opacity=((pixel & bmp_info.alpha_mask) << shift.opacity) >> 16; |
| 1258 | if (quantum_bits.opacity == 8) |
| 1259 | opacity|=(opacity >> 8); |
| 1260 | q->red=ScaleShortToQuantum((unsigned short) red); |
| 1261 | q->green=ScaleShortToQuantum((unsigned short) green); |
| 1262 | q->blue=ScaleShortToQuantum((unsigned short) blue); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1263 | SetOpacityPixelComponent(q,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1264 | if (image->matte != MagickFalse) |
cristy | 228ab74 | 2010-02-24 13:49:34 +0000 | [diff] [blame] | 1265 | q->opacity=ScaleShortToQuantum((unsigned short) (65535-opacity)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1266 | q++; |
| 1267 | } |
| 1268 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1269 | break; |
| 1270 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1271 | if (image->previous == (Image *) NULL) |
| 1272 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1273 | status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| 1274 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1275 | if (status == MagickFalse) |
| 1276 | break; |
| 1277 | } |
| 1278 | } |
| 1279 | break; |
| 1280 | } |
| 1281 | default: |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 1282 | { |
| 1283 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1284 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
cristy | de60ea7 | 2010-07-09 23:12:09 +0000 | [diff] [blame^] | 1285 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1286 | } |
| 1287 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1288 | if (EOFBlob(image) != MagickFalse) |
| 1289 | { |
| 1290 | ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| 1291 | image->filename); |
| 1292 | break; |
| 1293 | } |
| 1294 | if (bmp_info.height < 0) |
| 1295 | { |
| 1296 | Image |
| 1297 | *flipped_image; |
| 1298 | |
| 1299 | /* |
| 1300 | Correct image orientation. |
| 1301 | */ |
| 1302 | flipped_image=FlipImage(image,exception); |
cristy | 65e3b00 | 2010-04-13 21:20:56 +0000 | [diff] [blame] | 1303 | if (flipped_image != (Image *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1304 | { |
cristy | 65e3b00 | 2010-04-13 21:20:56 +0000 | [diff] [blame] | 1305 | DuplicateBlob(flipped_image,image); |
| 1306 | image=DestroyImage(image); |
| 1307 | image=flipped_image; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1308 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1309 | } |
| 1310 | /* |
| 1311 | Proceed to next image. |
| 1312 | */ |
| 1313 | if (image_info->number_scenes != 0) |
| 1314 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 1315 | break; |
| 1316 | *magick='\0'; |
| 1317 | if (bmp_info.ba_offset != 0) |
| 1318 | { |
| 1319 | offset=SeekBlob(image,(MagickOffsetType) bmp_info.ba_offset,SEEK_SET); |
| 1320 | if (offset < 0) |
| 1321 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 1322 | } |
| 1323 | count=ReadBlob(image,2,magick); |
| 1324 | if ((count == 2) && (IsBMP(magick,2) != MagickFalse)) |
| 1325 | { |
| 1326 | /* |
| 1327 | Acquire next image structure. |
| 1328 | */ |
| 1329 | AcquireNextImage(image_info,image); |
| 1330 | if (GetNextImageInList(image) == (Image *) NULL) |
| 1331 | { |
| 1332 | image=DestroyImageList(image); |
| 1333 | return((Image *) NULL); |
| 1334 | } |
| 1335 | image=SyncNextImageInList(image); |
| 1336 | status=SetImageProgress(image,LoadImagesTag,TellBlob(image), |
| 1337 | GetBlobSize(image)); |
| 1338 | if (status == MagickFalse) |
| 1339 | break; |
| 1340 | } |
| 1341 | } while (IsBMP(magick,2) != MagickFalse); |
| 1342 | (void) CloseBlob(image); |
| 1343 | return(GetFirstImageInList(image)); |
| 1344 | } |
| 1345 | |
| 1346 | /* |
| 1347 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1348 | % % |
| 1349 | % % |
| 1350 | % % |
| 1351 | % R e g i s t e r B M P I m a g e % |
| 1352 | % % |
| 1353 | % % |
| 1354 | % % |
| 1355 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1356 | % |
| 1357 | % RegisterBMPImage() adds attributes for the BMP image format to |
| 1358 | % the list of supported formats. The attributes include the image format |
| 1359 | % tag, a method to read and/or write the format, whether the format |
| 1360 | % supports the saving of more than one frame to the same file or blob, |
| 1361 | % whether the format supports native in-memory I/O, and a brief |
| 1362 | % description of the format. |
| 1363 | % |
| 1364 | % The format of the RegisterBMPImage method is: |
| 1365 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1366 | % size_t RegisterBMPImage(void) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1367 | % |
| 1368 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1369 | ModuleExport size_t RegisterBMPImage(void) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1370 | { |
| 1371 | MagickInfo |
| 1372 | *entry; |
| 1373 | |
| 1374 | entry=SetMagickInfo("BMP"); |
| 1375 | entry->decoder=(DecodeImageHandler *) ReadBMPImage; |
| 1376 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1377 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2e3d524 | 2010-04-16 23:44:55 +0000 | [diff] [blame] | 1378 | entry->description=ConstantString("Microsoft Windows bitmap image"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1379 | entry->module=ConstantString("BMP"); |
| 1380 | entry->adjoin=MagickFalse; |
| 1381 | entry->seekable_stream=MagickTrue; |
| 1382 | (void) RegisterMagickInfo(entry); |
| 1383 | entry=SetMagickInfo("BMP2"); |
| 1384 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1385 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2dd92ae | 2010-04-04 16:10:59 +0000 | [diff] [blame] | 1386 | entry->description=ConstantString("Microsoft Windows bitmap image (V2)"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1387 | entry->module=ConstantString("BMP"); |
| 1388 | entry->adjoin=MagickFalse; |
| 1389 | entry->seekable_stream=MagickTrue; |
| 1390 | (void) RegisterMagickInfo(entry); |
| 1391 | entry=SetMagickInfo("BMP3"); |
| 1392 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1393 | entry->magick=(IsImageFormatHandler *) IsBMP; |
cristy | 2dd92ae | 2010-04-04 16:10:59 +0000 | [diff] [blame] | 1394 | entry->description=ConstantString("Microsoft Windows bitmap image (V3)"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1395 | entry->module=ConstantString("BMP"); |
| 1396 | entry->adjoin=MagickFalse; |
| 1397 | entry->seekable_stream=MagickTrue; |
| 1398 | (void) RegisterMagickInfo(entry); |
| 1399 | return(MagickImageCoderSignature); |
| 1400 | } |
| 1401 | |
| 1402 | /* |
| 1403 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1404 | % % |
| 1405 | % % |
| 1406 | % % |
| 1407 | % U n r e g i s t e r B M P I m a g e % |
| 1408 | % % |
| 1409 | % % |
| 1410 | % % |
| 1411 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1412 | % |
| 1413 | % UnregisterBMPImage() removes format registrations made by the |
| 1414 | % BMP module from the list of supported formats. |
| 1415 | % |
| 1416 | % The format of the UnregisterBMPImage method is: |
| 1417 | % |
| 1418 | % UnregisterBMPImage(void) |
| 1419 | % |
| 1420 | */ |
| 1421 | ModuleExport void UnregisterBMPImage(void) |
| 1422 | { |
| 1423 | (void) UnregisterMagickInfo("BMP"); |
| 1424 | (void) UnregisterMagickInfo("BMP2"); |
| 1425 | (void) UnregisterMagickInfo("BMP3"); |
| 1426 | } |
| 1427 | |
| 1428 | /* |
| 1429 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1430 | % % |
| 1431 | % % |
| 1432 | % % |
| 1433 | % W r i t e B M P I m a g e % |
| 1434 | % % |
| 1435 | % % |
| 1436 | % % |
| 1437 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1438 | % |
| 1439 | % WriteBMPImage() writes an image in Microsoft Windows bitmap encoded |
| 1440 | % image format, version 3 for Windows or (if the image has a matte channel) |
| 1441 | % version 4. |
| 1442 | % |
| 1443 | % The format of the WriteBMPImage method is: |
| 1444 | % |
| 1445 | % MagickBooleanType WriteBMPImage(const ImageInfo *image_info,Image *image) |
| 1446 | % |
| 1447 | % A description of each parameter follows. |
| 1448 | % |
| 1449 | % o image_info: the image info. |
| 1450 | % |
| 1451 | % o image: The image. |
| 1452 | % |
| 1453 | */ |
| 1454 | static MagickBooleanType WriteBMPImage(const ImageInfo *image_info,Image *image) |
| 1455 | { |
| 1456 | BMPInfo |
| 1457 | bmp_info; |
| 1458 | |
| 1459 | const StringInfo |
| 1460 | *profile; |
| 1461 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1462 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1463 | y; |
| 1464 | |
| 1465 | MagickBooleanType |
| 1466 | have_color_info, |
| 1467 | status; |
| 1468 | |
| 1469 | MagickOffsetType |
| 1470 | scene; |
| 1471 | |
| 1472 | register const IndexPacket |
| 1473 | *indexes; |
| 1474 | |
| 1475 | register const PixelPacket |
| 1476 | *p; |
| 1477 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1478 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1479 | i, |
| 1480 | x; |
| 1481 | |
| 1482 | register unsigned char |
| 1483 | *q; |
| 1484 | |
| 1485 | unsigned char |
| 1486 | *bmp_data, |
| 1487 | *pixels; |
| 1488 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1489 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1490 | bytes_per_line, |
| 1491 | type; |
| 1492 | |
| 1493 | /* |
| 1494 | Open output image file. |
| 1495 | */ |
| 1496 | assert(image_info != (const ImageInfo *) NULL); |
| 1497 | assert(image_info->signature == MagickSignature); |
| 1498 | assert(image != (Image *) NULL); |
| 1499 | assert(image->signature == MagickSignature); |
| 1500 | if (image->debug != MagickFalse) |
| 1501 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1502 | status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); |
| 1503 | if (status == MagickFalse) |
| 1504 | return(status); |
| 1505 | type=4; |
| 1506 | if (LocaleCompare(image_info->magick,"BMP2") == 0) |
| 1507 | type=2; |
| 1508 | else |
| 1509 | if (LocaleCompare(image_info->magick,"BMP3") == 0) |
| 1510 | type=3; |
| 1511 | scene=0; |
| 1512 | do |
| 1513 | { |
| 1514 | /* |
| 1515 | Initialize BMP raster file header. |
| 1516 | */ |
| 1517 | if (image->colorspace != RGBColorspace) |
| 1518 | (void) TransformImageColorspace(image,RGBColorspace); |
| 1519 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 1520 | bmp_info.file_size=14+12; |
| 1521 | if (type > 2) |
| 1522 | bmp_info.file_size+=28; |
| 1523 | bmp_info.offset_bits=bmp_info.file_size; |
| 1524 | bmp_info.compression=BI_RGB; |
| 1525 | if ((image->storage_class == PseudoClass) && (image->colors > 256)) |
| 1526 | (void) SetImageStorageClass(image,DirectClass); |
| 1527 | if (image->storage_class != DirectClass) |
| 1528 | { |
| 1529 | /* |
| 1530 | Colormapped BMP raster. |
| 1531 | */ |
| 1532 | bmp_info.bits_per_pixel=8; |
| 1533 | if (image->colors <= 2) |
| 1534 | bmp_info.bits_per_pixel=1; |
| 1535 | else |
| 1536 | if (image->colors <= 16) |
| 1537 | bmp_info.bits_per_pixel=4; |
| 1538 | else |
| 1539 | if (image->colors <= 256) |
| 1540 | bmp_info.bits_per_pixel=8; |
| 1541 | if (image_info->compression == RLECompression) |
| 1542 | bmp_info.bits_per_pixel=8; |
| 1543 | bmp_info.number_colors=1U << bmp_info.bits_per_pixel; |
| 1544 | if (image->matte != MagickFalse) |
| 1545 | (void) SetImageStorageClass(image,DirectClass); |
| 1546 | else |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1547 | if ((size_t) bmp_info.number_colors < image->colors) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1548 | (void) SetImageStorageClass(image,DirectClass); |
| 1549 | else |
| 1550 | { |
| 1551 | bmp_info.file_size+=3*(1UL << bmp_info.bits_per_pixel); |
| 1552 | bmp_info.offset_bits+=3*(1UL << bmp_info.bits_per_pixel); |
| 1553 | if (type > 2) |
| 1554 | { |
| 1555 | bmp_info.file_size+=(1UL << bmp_info.bits_per_pixel); |
| 1556 | bmp_info.offset_bits+=(1UL << bmp_info.bits_per_pixel); |
| 1557 | } |
| 1558 | } |
| 1559 | } |
| 1560 | if (image->storage_class == DirectClass) |
| 1561 | { |
| 1562 | /* |
| 1563 | Full color BMP raster. |
| 1564 | */ |
| 1565 | bmp_info.number_colors=0; |
| 1566 | bmp_info.bits_per_pixel=(unsigned short) |
| 1567 | ((type > 3) && (image->matte != MagickFalse) ? 32 : 24); |
| 1568 | bmp_info.compression=(unsigned int) ((type > 3) && |
| 1569 | (image->matte != MagickFalse) ? BI_BITFIELDS : BI_RGB); |
| 1570 | } |
| 1571 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 1572 | bmp_info.ba_offset=0; |
| 1573 | profile=GetImageProfile(image,"icc"); |
| 1574 | have_color_info=(image->rendering_intent != UndefinedIntent) || |
| 1575 | (profile != (StringInfo *) NULL) || (image->gamma != 0.0) ? MagickTrue : |
| 1576 | MagickFalse; |
| 1577 | if (type == 2) |
| 1578 | bmp_info.size=12; |
| 1579 | else |
| 1580 | if ((type == 3) || ((image->matte == MagickFalse) && |
| 1581 | (have_color_info == MagickFalse))) |
| 1582 | { |
| 1583 | type=3; |
| 1584 | bmp_info.size=40; |
| 1585 | } |
| 1586 | else |
| 1587 | { |
| 1588 | int |
| 1589 | extra_size; |
| 1590 | |
| 1591 | bmp_info.size=108; |
| 1592 | extra_size=68; |
| 1593 | if ((image->rendering_intent != UndefinedIntent) || |
| 1594 | (profile != (StringInfo *) NULL)) |
| 1595 | { |
| 1596 | bmp_info.size=124; |
| 1597 | extra_size+=16; |
| 1598 | } |
| 1599 | bmp_info.file_size+=extra_size; |
| 1600 | bmp_info.offset_bits+=extra_size; |
| 1601 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1602 | bmp_info.width=(ssize_t) image->columns; |
| 1603 | bmp_info.height=(ssize_t) image->rows; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1604 | bmp_info.planes=1; |
| 1605 | bmp_info.image_size=(unsigned int) (bytes_per_line*image->rows); |
| 1606 | bmp_info.file_size+=bmp_info.image_size; |
| 1607 | bmp_info.x_pixels=75*39; |
| 1608 | bmp_info.y_pixels=75*39; |
| 1609 | switch (image->units) |
| 1610 | { |
| 1611 | case UndefinedResolution: |
| 1612 | case PixelsPerInchResolution: |
| 1613 | { |
| 1614 | bmp_info.x_pixels=(unsigned int) (100.0*image->x_resolution/2.54); |
| 1615 | bmp_info.y_pixels=(unsigned int) (100.0*image->y_resolution/2.54); |
| 1616 | break; |
| 1617 | } |
| 1618 | case PixelsPerCentimeterResolution: |
| 1619 | { |
| 1620 | bmp_info.x_pixels=(unsigned int) (100.0*image->x_resolution); |
| 1621 | bmp_info.y_pixels=(unsigned int) (100.0*image->y_resolution); |
| 1622 | break; |
| 1623 | } |
| 1624 | } |
| 1625 | bmp_info.colors_important=bmp_info.number_colors; |
| 1626 | /* |
| 1627 | Convert MIFF to BMP raster pixels. |
| 1628 | */ |
| 1629 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) bmp_info.image_size, |
| 1630 | sizeof(*pixels)); |
| 1631 | if (pixels == (unsigned char *) NULL) |
| 1632 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1633 | (void) ResetMagickMemory(pixels,0,(size_t) bmp_info.image_size); |
| 1634 | switch (bmp_info.bits_per_pixel) |
| 1635 | { |
| 1636 | case 1: |
| 1637 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1638 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1639 | bit, |
| 1640 | byte; |
| 1641 | |
| 1642 | /* |
| 1643 | Convert PseudoClass image to a BMP monochrome image. |
| 1644 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1645 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1646 | { |
| 1647 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1648 | if (p == (const PixelPacket *) NULL) |
| 1649 | break; |
| 1650 | indexes=GetVirtualIndexQueue(image); |
| 1651 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1652 | bit=0; |
| 1653 | byte=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1654 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1655 | { |
| 1656 | byte<<=1; |
| 1657 | byte|=indexes[x] != 0 ? 0x01 : 0x00; |
| 1658 | bit++; |
| 1659 | if (bit == 8) |
| 1660 | { |
| 1661 | *q++=(unsigned char) byte; |
| 1662 | bit=0; |
| 1663 | byte=0; |
| 1664 | } |
| 1665 | } |
| 1666 | if (bit != 0) |
| 1667 | { |
| 1668 | *q++=(unsigned char) (byte << (8-bit)); |
| 1669 | x++; |
| 1670 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1671 | for (x=(ssize_t) (image->columns+7)/8; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1672 | *q++=0x00; |
| 1673 | if (image->previous == (Image *) NULL) |
| 1674 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1675 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1676 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1677 | if (status == MagickFalse) |
| 1678 | break; |
| 1679 | } |
| 1680 | } |
| 1681 | break; |
| 1682 | } |
| 1683 | case 4: |
| 1684 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1685 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1686 | nibble, |
| 1687 | byte; |
| 1688 | |
| 1689 | /* |
| 1690 | Convert PseudoClass image to a BMP monochrome image. |
| 1691 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1692 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1693 | { |
| 1694 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1695 | if (p == (const PixelPacket *) NULL) |
| 1696 | break; |
| 1697 | indexes=GetVirtualIndexQueue(image); |
| 1698 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1699 | nibble=0; |
| 1700 | byte=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1701 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1702 | { |
| 1703 | byte<<=4; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1704 | byte|=((size_t) indexes[x] & 0x0f); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1705 | nibble++; |
| 1706 | if (nibble == 2) |
| 1707 | { |
| 1708 | *q++=(unsigned char) byte; |
| 1709 | nibble=0; |
| 1710 | byte=0; |
| 1711 | } |
| 1712 | } |
| 1713 | if (nibble != 0) |
| 1714 | { |
| 1715 | *q++=(unsigned char) (byte << 4); |
| 1716 | x++; |
| 1717 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1718 | for (x=(ssize_t) (image->columns+1)/2; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1719 | *q++=0x00; |
| 1720 | if (image->previous == (Image *) NULL) |
| 1721 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1722 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1723 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1724 | if (status == MagickFalse) |
| 1725 | break; |
| 1726 | } |
| 1727 | } |
| 1728 | break; |
| 1729 | } |
| 1730 | case 8: |
| 1731 | { |
| 1732 | /* |
| 1733 | Convert PseudoClass packet to BMP pixel. |
| 1734 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1735 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1736 | { |
| 1737 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1738 | if (p == (const PixelPacket *) NULL) |
| 1739 | break; |
| 1740 | indexes=GetVirtualIndexQueue(image); |
| 1741 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1742 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1743 | *q++=(unsigned char) indexes[x]; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1744 | for ( ; x < (ssize_t) bytes_per_line; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1745 | *q++=0x00; |
| 1746 | if (image->previous == (Image *) NULL) |
| 1747 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1748 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1749 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1750 | if (status == MagickFalse) |
| 1751 | break; |
| 1752 | } |
| 1753 | } |
| 1754 | break; |
| 1755 | } |
| 1756 | case 24: |
| 1757 | { |
| 1758 | /* |
| 1759 | Convert DirectClass packet to BMP BGR888. |
| 1760 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1761 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1762 | { |
| 1763 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1764 | if (p == (const PixelPacket *) NULL) |
| 1765 | break; |
| 1766 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1767 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1768 | { |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1769 | *q++=ScaleQuantumToChar(GetBluePixelComponent(p)); |
| 1770 | *q++=ScaleQuantumToChar(GetGreenPixelComponent(p)); |
| 1771 | *q++=ScaleQuantumToChar(GetRedPixelComponent(p)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1772 | p++; |
| 1773 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1774 | 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] | 1775 | *q++=0x00; |
| 1776 | if (image->previous == (Image *) NULL) |
| 1777 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1778 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1779 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1780 | if (status == MagickFalse) |
| 1781 | break; |
| 1782 | } |
| 1783 | } |
| 1784 | break; |
| 1785 | } |
| 1786 | case 32: |
| 1787 | { |
| 1788 | /* |
| 1789 | Convert DirectClass packet to ARGB8888 pixel. |
| 1790 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1791 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1792 | { |
| 1793 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1794 | if (p == (const PixelPacket *) NULL) |
| 1795 | break; |
| 1796 | q=pixels+(image->rows-y-1)*bytes_per_line; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1797 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1798 | { |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1799 | *q++=ScaleQuantumToChar(GetBluePixelComponent(p)); |
| 1800 | *q++=ScaleQuantumToChar(GetGreenPixelComponent(p)); |
| 1801 | *q++=ScaleQuantumToChar(GetRedPixelComponent(p)); |
cristy | 228ab74 | 2010-02-24 13:49:34 +0000 | [diff] [blame] | 1802 | *q++=ScaleQuantumToChar(QuantumRange-GetOpacityPixelComponent(p)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1803 | p++; |
| 1804 | } |
| 1805 | if (image->previous == (Image *) NULL) |
| 1806 | { |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1807 | status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| 1808 | image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1809 | if (status == MagickFalse) |
| 1810 | break; |
| 1811 | } |
| 1812 | } |
| 1813 | break; |
| 1814 | } |
| 1815 | } |
| 1816 | if ((type > 2) && (bmp_info.bits_per_pixel == 8)) |
| 1817 | if (image_info->compression != NoCompression) |
| 1818 | { |
| 1819 | size_t |
| 1820 | length; |
| 1821 | |
| 1822 | /* |
| 1823 | Convert run-length encoded raster pixels. |
| 1824 | */ |
| 1825 | length=(size_t) (2*(bytes_per_line+2)*(image->rows+2)+2); |
| 1826 | bmp_data=(unsigned char *) NULL; |
| 1827 | if (~length >= bytes_per_line) |
| 1828 | bmp_data=(unsigned char *) AcquireQuantumMemory(length+ |
| 1829 | bytes_per_line,sizeof(*bmp_data)); |
| 1830 | if (bmp_data == (unsigned char *) NULL) |
| 1831 | { |
| 1832 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1833 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1834 | } |
| 1835 | bmp_info.file_size-=bmp_info.image_size; |
| 1836 | bmp_info.image_size=(unsigned int) EncodeImage(image,bytes_per_line, |
| 1837 | pixels,bmp_data); |
| 1838 | bmp_info.file_size+=bmp_info.image_size; |
| 1839 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1840 | pixels=bmp_data; |
| 1841 | bmp_info.compression=BI_RLE8; |
| 1842 | } |
| 1843 | /* |
| 1844 | Write BMP for Windows, all versions, 14-byte header. |
| 1845 | */ |
| 1846 | if (image->debug != MagickFalse) |
| 1847 | { |
| 1848 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1849 | " Writing BMP version %.20g datastream",(double) type); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1850 | if (image->storage_class == DirectClass) |
| 1851 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1852 | " Storage class=DirectClass"); |
| 1853 | else |
| 1854 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1855 | " Storage class=PseudoClass"); |
| 1856 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1857 | " Image depth=%.20g",(double) image->depth); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1858 | if (image->matte != MagickFalse) |
| 1859 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1860 | " Matte=True"); |
| 1861 | else |
| 1862 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1863 | " Matte=MagickFalse"); |
| 1864 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 1865 | " BMP bits_per_pixel=%.20g",(double) bmp_info.bits_per_pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1866 | switch ((int) bmp_info.compression) |
| 1867 | { |
| 1868 | case BI_RGB: |
| 1869 | { |
| 1870 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1871 | " Compression=BI_RGB"); |
| 1872 | break; |
| 1873 | } |
| 1874 | case BI_RLE8: |
| 1875 | { |
| 1876 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1877 | " Compression=BI_RLE8"); |
| 1878 | break; |
| 1879 | } |
| 1880 | case BI_BITFIELDS: |
| 1881 | { |
| 1882 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1883 | " Compression=BI_BITFIELDS"); |
| 1884 | break; |
| 1885 | } |
| 1886 | default: |
| 1887 | { |
| 1888 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1889 | " Compression=UNKNOWN (%u)",bmp_info.compression); |
| 1890 | break; |
| 1891 | } |
| 1892 | } |
| 1893 | if (bmp_info.number_colors == 0) |
| 1894 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1895 | " Number_colors=unspecified"); |
| 1896 | else |
| 1897 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1898 | " Number_colors=%u",bmp_info.number_colors); |
| 1899 | } |
| 1900 | (void) WriteBlob(image,2,(unsigned char *) "BM"); |
| 1901 | (void) WriteBlobLSBLong(image,bmp_info.file_size); |
| 1902 | (void) WriteBlobLSBLong(image,bmp_info.ba_offset); /* always 0 */ |
| 1903 | (void) WriteBlobLSBLong(image,bmp_info.offset_bits); |
| 1904 | if (type == 2) |
| 1905 | { |
| 1906 | /* |
| 1907 | Write 12-byte version 2 bitmap header. |
| 1908 | */ |
| 1909 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1910 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.width); |
| 1911 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.height); |
| 1912 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1913 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1914 | } |
| 1915 | else |
| 1916 | { |
| 1917 | /* |
| 1918 | Write 40-byte version 3+ bitmap header. |
| 1919 | */ |
| 1920 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1921 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.width); |
| 1922 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.height); |
| 1923 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1924 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1925 | (void) WriteBlobLSBLong(image,bmp_info.compression); |
| 1926 | (void) WriteBlobLSBLong(image,bmp_info.image_size); |
| 1927 | (void) WriteBlobLSBLong(image,bmp_info.x_pixels); |
| 1928 | (void) WriteBlobLSBLong(image,bmp_info.y_pixels); |
| 1929 | (void) WriteBlobLSBLong(image,bmp_info.number_colors); |
| 1930 | (void) WriteBlobLSBLong(image,bmp_info.colors_important); |
| 1931 | } |
| 1932 | if ((type > 3) && ((image->matte != MagickFalse) || |
| 1933 | (have_color_info != MagickFalse))) |
| 1934 | { |
| 1935 | /* |
| 1936 | Write the rest of the 108-byte BMP Version 4 header. |
| 1937 | */ |
| 1938 | (void) WriteBlobLSBLong(image,0x00ff0000U); /* Red mask */ |
| 1939 | (void) WriteBlobLSBLong(image,0x0000ff00U); /* Green mask */ |
| 1940 | (void) WriteBlobLSBLong(image,0x000000ffU); /* Blue mask */ |
| 1941 | (void) WriteBlobLSBLong(image,0xff000000U); /* Alpha mask */ |
| 1942 | (void) WriteBlobLSBLong(image,0x00000001U); /* CSType==Calib. RGB */ |
| 1943 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1944 | image->chromaticity.red_primary.x*0x3ffffff); |
| 1945 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1946 | image->chromaticity.red_primary.y*0x3ffffff); |
| 1947 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1948 | (1.000f-(image->chromaticity.red_primary.x+ |
| 1949 | image->chromaticity.red_primary.y)*0x3ffffff)); |
| 1950 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1951 | image->chromaticity.green_primary.x*0x3ffffff); |
| 1952 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1953 | image->chromaticity.green_primary.y*0x3ffffff); |
| 1954 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1955 | (1.000f-(image->chromaticity.green_primary.x+ |
| 1956 | image->chromaticity.green_primary.y)*0x3ffffff)); |
| 1957 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1958 | image->chromaticity.blue_primary.x*0x3ffffff); |
| 1959 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1960 | image->chromaticity.blue_primary.y*0x3ffffff); |
| 1961 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1962 | (1.000f-(image->chromaticity.blue_primary.x+ |
| 1963 | image->chromaticity.blue_primary.y)*0x3ffffff)); |
| 1964 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1965 | bmp_info.gamma_scale.x*0xffff); |
| 1966 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1967 | bmp_info.gamma_scale.y*0xffff); |
| 1968 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1969 | bmp_info.gamma_scale.z*0xffff); |
| 1970 | if ((image->rendering_intent != UndefinedIntent) || |
| 1971 | (profile != (StringInfo *) NULL)) |
| 1972 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1973 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1974 | intent; |
| 1975 | |
| 1976 | switch ((int) image->rendering_intent) |
| 1977 | { |
| 1978 | case SaturationIntent: |
| 1979 | { |
| 1980 | intent=LCS_GM_BUSINESS; |
| 1981 | break; |
| 1982 | } |
| 1983 | case RelativeIntent: |
| 1984 | { |
| 1985 | intent=LCS_GM_GRAPHICS; |
| 1986 | break; |
| 1987 | } |
| 1988 | case PerceptualIntent: |
| 1989 | { |
| 1990 | intent=LCS_GM_IMAGES; |
| 1991 | break; |
| 1992 | } |
| 1993 | case AbsoluteIntent: |
| 1994 | { |
| 1995 | intent=LCS_GM_ABS_COLORIMETRIC; |
| 1996 | break; |
| 1997 | } |
| 1998 | default: |
| 1999 | { |
| 2000 | intent=0; |
| 2001 | break; |
| 2002 | } |
| 2003 | } |
| 2004 | (void) WriteBlobLSBLong(image,(unsigned int) intent); |
| 2005 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile data */ |
| 2006 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile length */ |
| 2007 | (void) WriteBlobLSBLong(image,0x00); /* reserved */ |
| 2008 | } |
| 2009 | } |
| 2010 | if (image->storage_class == PseudoClass) |
| 2011 | { |
| 2012 | unsigned char |
| 2013 | *bmp_colormap; |
| 2014 | |
| 2015 | /* |
| 2016 | Dump colormap to file. |
| 2017 | */ |
| 2018 | if (image->debug != MagickFalse) |
| 2019 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 2020 | " Colormap: %.20g entries",(double) image->colors); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2021 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) (1UL << |
| 2022 | bmp_info.bits_per_pixel),4*sizeof(*bmp_colormap)); |
| 2023 | if (bmp_colormap == (unsigned char *) NULL) |
| 2024 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2025 | q=bmp_colormap; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2026 | 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] | 2027 | { |
| 2028 | *q++=ScaleQuantumToChar(image->colormap[i].blue); |
| 2029 | *q++=ScaleQuantumToChar(image->colormap[i].green); |
| 2030 | *q++=ScaleQuantumToChar(image->colormap[i].red); |
| 2031 | if (type > 2) |
| 2032 | *q++=(unsigned char) 0x0; |
| 2033 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2034 | for ( ; i < (ssize_t) (1UL << bmp_info.bits_per_pixel); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2035 | { |
| 2036 | *q++=(unsigned char) 0x00; |
| 2037 | *q++=(unsigned char) 0x00; |
| 2038 | *q++=(unsigned char) 0x00; |
| 2039 | if (type > 2) |
| 2040 | *q++=(unsigned char) 0x00; |
| 2041 | } |
| 2042 | if (type <= 2) |
| 2043 | (void) WriteBlob(image,(size_t) (3*(1L << bmp_info.bits_per_pixel)), |
| 2044 | bmp_colormap); |
| 2045 | else |
| 2046 | (void) WriteBlob(image,(size_t) (4*(1L << bmp_info.bits_per_pixel)), |
| 2047 | bmp_colormap); |
| 2048 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 2049 | } |
| 2050 | if (image->debug != MagickFalse) |
| 2051 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 2052 | " Pixels: %u bytes",bmp_info.image_size); |
| 2053 | (void) WriteBlob(image,(size_t) bmp_info.image_size,pixels); |
| 2054 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 2055 | if (GetNextImageInList(image) == (Image *) NULL) |
| 2056 | break; |
| 2057 | image=SyncNextImageInList(image); |
| 2058 | status=SetImageProgress(image,SaveImagesTag,scene++, |
| 2059 | GetImageListLength(image)); |
| 2060 | if (status == MagickFalse) |
| 2061 | break; |
| 2062 | } while (image_info->adjoin != MagickFalse); |
| 2063 | (void) CloseBlob(image); |
| 2064 | return(MagickTrue); |
| 2065 | } |