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 | % % |
| 21 | % Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization % |
| 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" |
| 49 | #include "magick/colorspace.h" |
| 50 | #include "magick/exception.h" |
| 51 | #include "magick/exception-private.h" |
| 52 | #include "magick/image.h" |
| 53 | #include "magick/image-private.h" |
| 54 | #include "magick/list.h" |
| 55 | #include "magick/log.h" |
| 56 | #include "magick/magick.h" |
| 57 | #include "magick/memory_.h" |
| 58 | #include "magick/monitor.h" |
| 59 | #include "magick/monitor-private.h" |
| 60 | #include "magick/profile.h" |
| 61 | #include "magick/quantum-private.h" |
| 62 | #include "magick/static.h" |
| 63 | #include "magick/string_.h" |
| 64 | #include "magick/module.h" |
| 65 | #include "magick/transform.h" |
| 66 | |
| 67 | /* |
| 68 | Macro definitions (from Windows wingdi.h). |
| 69 | */ |
| 70 | #undef BI_JPEG |
| 71 | #define BI_JPEG 4 |
| 72 | #undef BI_PNG |
| 73 | #define BI_PNG 5 |
| 74 | #if !defined(__WINDOWS__) || defined(__MINGW32__) |
| 75 | #define BI_RGB 0 |
| 76 | #define BI_RLE8 1 |
| 77 | #define BI_RLE4 2 |
| 78 | #define BI_BITFIELDS 3 |
| 79 | |
| 80 | #define LCS_CALIBRATED_RBG 0 |
| 81 | #define LCS_sRGB 1 |
| 82 | #define LCS_WINDOWS_COLOR_SPACE 2 |
| 83 | #define PROFILE_LINKED 3 |
| 84 | #define PROFILE_EMBEDDED 4 |
| 85 | |
| 86 | #define LCS_GM_BUSINESS 1 /* Saturation */ |
| 87 | #define LCS_GM_GRAPHICS 2 /* Relative */ |
| 88 | #define LCS_GM_IMAGES 4 /* Perceptual */ |
| 89 | #define LCS_GM_ABS_COLORIMETRIC 8 /* Absolute */ |
| 90 | #endif |
| 91 | |
| 92 | /* |
| 93 | Typedef declarations. |
| 94 | */ |
| 95 | typedef struct _BMPInfo |
| 96 | { |
| 97 | unsigned int |
| 98 | file_size, |
| 99 | ba_offset, |
| 100 | offset_bits, |
| 101 | size; |
| 102 | |
| 103 | long |
| 104 | width, |
| 105 | height; |
| 106 | |
| 107 | unsigned short |
| 108 | planes, |
| 109 | bits_per_pixel; |
| 110 | |
| 111 | unsigned int |
| 112 | compression, |
| 113 | image_size, |
| 114 | x_pixels, |
| 115 | y_pixels, |
| 116 | number_colors, |
| 117 | red_mask, |
| 118 | green_mask, |
| 119 | blue_mask, |
| 120 | alpha_mask, |
| 121 | colors_important; |
| 122 | |
| 123 | int |
| 124 | colorspace; |
| 125 | |
| 126 | PrimaryInfo |
| 127 | red_primary, |
| 128 | green_primary, |
| 129 | blue_primary, |
| 130 | gamma_scale; |
| 131 | } BMPInfo; |
| 132 | |
| 133 | /* |
| 134 | Forward declarations. |
| 135 | */ |
| 136 | static MagickBooleanType |
| 137 | WriteBMPImage(const ImageInfo *,Image *); |
| 138 | |
| 139 | /* |
| 140 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 141 | % % |
| 142 | % % |
| 143 | % % |
| 144 | % D e c o d e I m a g e % |
| 145 | % % |
| 146 | % % |
| 147 | % % |
| 148 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 149 | % |
| 150 | % DecodeImage unpacks the packed image pixels into runlength-encoded |
| 151 | % pixel packets. |
| 152 | % |
| 153 | % The format of the DecodeImage method is: |
| 154 | % |
| 155 | % MagickBooleanType DecodeImage(Image *image, |
| 156 | % const unsigned long compression,unsigned char *pixels) |
| 157 | % |
| 158 | % A description of each parameter follows: |
| 159 | % |
| 160 | % o image: the address of a structure of type Image. |
| 161 | % |
| 162 | % o compression: Zero means uncompressed. A value of 1 means the |
| 163 | % compressed pixels are runlength encoded for a 256-color bitmap. |
| 164 | % A value of 2 means a 16-color bitmap. A value of 3 means bitfields |
| 165 | % encoding. |
| 166 | % |
| 167 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 168 | % the decoding process. |
| 169 | % |
| 170 | */ |
| 171 | |
| 172 | static inline long MagickAbsoluteValue(const long x) |
| 173 | { |
| 174 | if (x < 0) |
| 175 | return(-x); |
| 176 | return(x); |
| 177 | } |
| 178 | |
| 179 | static inline size_t MagickMax(const size_t x,const size_t y) |
| 180 | { |
| 181 | if (x > y) |
| 182 | return(x); |
| 183 | return(y); |
| 184 | } |
| 185 | |
| 186 | static inline long MagickMin(const long x,const long y) |
| 187 | { |
| 188 | if (x < y) |
| 189 | return(x); |
| 190 | return(y); |
| 191 | } |
| 192 | |
| 193 | static MagickBooleanType DecodeImage(Image *image, |
| 194 | const unsigned long compression,unsigned char *pixels) |
| 195 | { |
| 196 | int |
| 197 | count; |
| 198 | |
| 199 | long |
| 200 | y; |
| 201 | |
| 202 | register long |
| 203 | i, |
| 204 | x; |
| 205 | |
| 206 | register unsigned char |
| 207 | *p, |
| 208 | *q; |
| 209 | |
| 210 | unsigned char |
| 211 | byte; |
| 212 | |
| 213 | assert(image != (Image *) NULL); |
| 214 | assert(image->signature == MagickSignature); |
| 215 | if (image->debug != MagickFalse) |
| 216 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 217 | assert(pixels != (unsigned char *) NULL); |
| 218 | (void) ResetMagickMemory(pixels,0,(size_t) image->columns*image->rows* |
| 219 | sizeof(*pixels)); |
| 220 | byte=0; |
| 221 | x=0; |
| 222 | p=pixels; |
| 223 | q=pixels+(size_t) image->columns*image->rows; |
| 224 | for (y=0; y < (long) image->rows; ) |
| 225 | { |
| 226 | if ((p < pixels) || (p >= q)) |
| 227 | break; |
| 228 | count=ReadBlobByte(image); |
| 229 | if (count == EOF) |
| 230 | break; |
| 231 | if (count != 0) |
| 232 | { |
| 233 | /* |
| 234 | Encoded mode. |
| 235 | */ |
| 236 | count=MagickMin(count,(int) (q-p)); |
| 237 | byte=(unsigned char) ReadBlobByte(image); |
| 238 | if (compression == BI_RLE8) |
| 239 | { |
| 240 | for (i=0; i < count; i++) |
| 241 | *p++=(unsigned char) byte; |
| 242 | } |
| 243 | else |
| 244 | { |
| 245 | for (i=0; i < count; i++) |
| 246 | *p++=(unsigned char) |
| 247 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 248 | } |
| 249 | x+=count; |
| 250 | } |
| 251 | else |
| 252 | { |
| 253 | /* |
| 254 | Escape mode. |
| 255 | */ |
| 256 | count=ReadBlobByte(image); |
| 257 | if (count == 0x01) |
| 258 | return(MagickTrue); |
| 259 | switch (count) |
| 260 | { |
| 261 | case 0x00: |
| 262 | { |
| 263 | /* |
| 264 | End of line. |
| 265 | */ |
| 266 | x=0; |
| 267 | y++; |
| 268 | p=pixels+y*image->columns; |
| 269 | break; |
| 270 | } |
| 271 | case 0x02: |
| 272 | { |
| 273 | /* |
| 274 | Delta mode. |
| 275 | */ |
| 276 | x+=ReadBlobByte(image); |
| 277 | y+=ReadBlobByte(image); |
| 278 | p=pixels+y*image->columns+x; |
| 279 | break; |
| 280 | } |
| 281 | default: |
| 282 | { |
| 283 | /* |
| 284 | Absolute mode. |
| 285 | */ |
| 286 | count=MagickMin(count,(int) (q-p)); |
| 287 | if (compression == BI_RLE8) |
| 288 | for (i=0; i < count; i++) |
| 289 | *p++=(unsigned char) ReadBlobByte(image); |
| 290 | else |
| 291 | for (i=0; i < count; i++) |
| 292 | { |
| 293 | if ((i & 0x01) == 0) |
| 294 | byte=(unsigned char) ReadBlobByte(image); |
| 295 | *p++=(unsigned char) |
| 296 | ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); |
| 297 | } |
| 298 | x+=count; |
| 299 | /* |
| 300 | Read pad byte. |
| 301 | */ |
| 302 | if (compression == BI_RLE8) |
| 303 | { |
| 304 | if ((count & 0x01) != 0) |
| 305 | (void) ReadBlobByte(image); |
| 306 | } |
| 307 | else |
| 308 | if (((count & 0x03) == 1) || ((count & 0x03) == 2)) |
| 309 | (void) ReadBlobByte(image); |
| 310 | break; |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) |
| 315 | break; |
| 316 | } |
| 317 | (void) ReadBlobByte(image); /* end of line */ |
| 318 | (void) ReadBlobByte(image); |
| 319 | return(MagickTrue); |
| 320 | } |
| 321 | |
| 322 | /* |
| 323 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 324 | % % |
| 325 | % % |
| 326 | % % |
| 327 | % E n c o d e I m a g e % |
| 328 | % % |
| 329 | % % |
| 330 | % % |
| 331 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 332 | % |
| 333 | % EncodeImage compresses pixels using a runlength encoded format. |
| 334 | % |
| 335 | % The format of the EncodeImage method is: |
| 336 | % |
| 337 | % static MagickBooleanType EncodeImage(Image *image, |
| 338 | % const unsigned long bytes_per_line,const unsigned char *pixels, |
| 339 | % unsigned char *compressed_pixels) |
| 340 | % |
| 341 | % A description of each parameter follows: |
| 342 | % |
| 343 | % o image: The image. |
| 344 | % |
| 345 | % o bytes_per_line: the number of bytes in a scanline of compressed pixels |
| 346 | % |
| 347 | % o pixels: The address of a byte (8 bits) array of pixel data created by |
| 348 | % the compression process. |
| 349 | % |
| 350 | % o compressed_pixels: The address of a byte (8 bits) array of compressed |
| 351 | % pixel data. |
| 352 | % |
| 353 | */ |
| 354 | static size_t EncodeImage(Image *image,const unsigned long bytes_per_line, |
| 355 | const unsigned char *pixels,unsigned char *compressed_pixels) |
| 356 | { |
| 357 | long |
| 358 | y; |
| 359 | |
| 360 | MagickBooleanType |
| 361 | status; |
| 362 | |
| 363 | register const unsigned char |
| 364 | *p; |
| 365 | |
| 366 | register long |
| 367 | i, |
| 368 | x; |
| 369 | |
| 370 | register unsigned char |
| 371 | *q; |
| 372 | |
| 373 | /* |
| 374 | Runlength encode pixels. |
| 375 | */ |
| 376 | assert(image != (Image *) NULL); |
| 377 | assert(image->signature == MagickSignature); |
| 378 | if (image->debug != MagickFalse) |
| 379 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 380 | assert(pixels != (const unsigned char *) NULL); |
| 381 | assert(compressed_pixels != (unsigned char *) NULL); |
| 382 | p=pixels; |
| 383 | q=compressed_pixels; |
| 384 | i=0; |
| 385 | for (y=0; y < (long) image->rows; y++) |
| 386 | { |
| 387 | for (x=0; x < (long) bytes_per_line; x+=i) |
| 388 | { |
| 389 | /* |
| 390 | Determine runlength. |
| 391 | */ |
| 392 | for (i=1; ((x+i) < (long) bytes_per_line); i++) |
| 393 | if ((i == 255) || (*(p+i) != *p)) |
| 394 | break; |
| 395 | *q++=(unsigned char) i; |
| 396 | *q++=(*p); |
| 397 | p+=i; |
| 398 | } |
| 399 | /* |
| 400 | End of line. |
| 401 | */ |
| 402 | *q++=(unsigned char) 0x00; |
| 403 | *q++=(unsigned char) 0x00; |
| 404 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 405 | if (status == MagickFalse) |
| 406 | break; |
| 407 | } |
| 408 | /* |
| 409 | End of bitmap. |
| 410 | */ |
| 411 | *q++=(unsigned char) 0x00; |
| 412 | *q++=(unsigned char) 0x01; |
| 413 | return((size_t) (q-compressed_pixels)); |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 418 | % % |
| 419 | % % |
| 420 | % % |
| 421 | % I s B M P % |
| 422 | % % |
| 423 | % % |
| 424 | % % |
| 425 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 426 | % |
| 427 | % IsBMP() returns MagickTrue if the image format type, identified by the |
| 428 | % magick string, is BMP. |
| 429 | % |
| 430 | % The format of the IsBMP method is: |
| 431 | % |
| 432 | % MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 433 | % |
| 434 | % A description of each parameter follows: |
| 435 | % |
| 436 | % o magick: compare image format pattern against these bytes. |
| 437 | % |
| 438 | % o length: Specifies the length of the magick string. |
| 439 | % |
| 440 | */ |
| 441 | static MagickBooleanType IsBMP(const unsigned char *magick,const size_t length) |
| 442 | { |
| 443 | if (length < 2) |
| 444 | return(MagickFalse); |
| 445 | if ((LocaleNCompare((char *) magick,"BA",2) == 0) || |
| 446 | (LocaleNCompare((char *) magick,"BM",2) == 0) || |
| 447 | (LocaleNCompare((char *) magick,"IC",2) == 0) || |
| 448 | (LocaleNCompare((char *) magick,"PI",2) == 0) || |
| 449 | (LocaleNCompare((char *) magick,"CI",2) == 0) || |
| 450 | (LocaleNCompare((char *) magick,"CP",2) == 0)) |
| 451 | return(MagickTrue); |
| 452 | return(MagickFalse); |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 457 | % % |
| 458 | % % |
| 459 | % % |
| 460 | % R e a d B M P I m a g e % |
| 461 | % % |
| 462 | % % |
| 463 | % % |
| 464 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 465 | % |
| 466 | % ReadBMPImage() reads a Microsoft Windows bitmap image file, Version |
| 467 | % 2, 3 (for Windows or NT), or 4, and returns it. It allocates the memory |
| 468 | % necessary for the new Image structure and returns a pointer to the new |
| 469 | % image. |
| 470 | % |
| 471 | % The format of the ReadBMPImage method is: |
| 472 | % |
| 473 | % image=ReadBMPImage(image_info) |
| 474 | % |
| 475 | % A description of each parameter follows: |
| 476 | % |
| 477 | % o image_info: the image info. |
| 478 | % |
| 479 | % o exception: return any errors or warnings in this structure. |
| 480 | % |
| 481 | */ |
| 482 | |
| 483 | static Image *ReadBMPImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 484 | { |
| 485 | BMPInfo |
| 486 | bmp_info; |
| 487 | |
| 488 | Image |
| 489 | *image; |
| 490 | |
| 491 | IndexPacket |
| 492 | index; |
| 493 | |
| 494 | long |
| 495 | y; |
| 496 | |
| 497 | MagickBooleanType |
| 498 | status; |
| 499 | |
| 500 | MagickOffsetType |
| 501 | offset, |
| 502 | start_position; |
| 503 | |
| 504 | register IndexPacket |
| 505 | *indexes; |
| 506 | |
| 507 | register long |
| 508 | x; |
| 509 | |
| 510 | register PixelPacket |
| 511 | *q; |
| 512 | |
| 513 | register long |
| 514 | i; |
| 515 | |
| 516 | register unsigned char |
| 517 | *p; |
| 518 | |
| 519 | ssize_t |
| 520 | count; |
| 521 | |
| 522 | size_t |
| 523 | length; |
| 524 | |
| 525 | unsigned char |
| 526 | magick[12], |
| 527 | *pixels; |
| 528 | |
| 529 | unsigned long |
| 530 | bit, |
| 531 | blue, |
| 532 | bytes_per_line, |
| 533 | green, |
| 534 | opacity, |
| 535 | red; |
| 536 | |
| 537 | /* |
| 538 | Open image file. |
| 539 | */ |
| 540 | assert(image_info != (const ImageInfo *) NULL); |
| 541 | assert(image_info->signature == MagickSignature); |
| 542 | if (image_info->debug != MagickFalse) |
| 543 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 544 | image_info->filename); |
| 545 | assert(exception != (ExceptionInfo *) NULL); |
| 546 | assert(exception->signature == MagickSignature); |
| 547 | image=AcquireImage(image_info); |
| 548 | status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| 549 | if (status == MagickFalse) |
| 550 | { |
| 551 | image=DestroyImageList(image); |
| 552 | return((Image *) NULL); |
| 553 | } |
| 554 | /* |
| 555 | Determine if this a BMP file. |
| 556 | */ |
| 557 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 558 | bmp_info.ba_offset=0; |
| 559 | start_position=0; |
| 560 | count=ReadBlob(image,2,magick); |
| 561 | do |
| 562 | { |
| 563 | LongPixelPacket |
| 564 | shift; |
| 565 | |
| 566 | PixelPacket |
| 567 | quantum_bits; |
| 568 | |
| 569 | unsigned long |
| 570 | profile_data, |
| 571 | profile_size; |
| 572 | |
| 573 | /* |
| 574 | Verify BMP identifier. |
| 575 | */ |
| 576 | if (bmp_info.ba_offset == 0) |
| 577 | start_position=TellBlob(image)-2; |
| 578 | bmp_info.ba_offset=0; |
| 579 | while (LocaleNCompare((char *) magick,"BA",2) == 0) |
| 580 | { |
| 581 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 582 | bmp_info.ba_offset=ReadBlobLSBLong(image); |
| 583 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 584 | count=ReadBlob(image,2,magick); |
| 585 | if (count != 2) |
| 586 | break; |
| 587 | } |
| 588 | if (image->debug != MagickFalse) |
| 589 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," Magick: %c%c", |
| 590 | magick[0],magick[1]); |
| 591 | if ((count == 0) || ((LocaleNCompare((char *) magick,"BM",2) != 0) && |
| 592 | (LocaleNCompare((char *) magick,"CI",2) != 0))) |
| 593 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 594 | bmp_info.file_size=ReadBlobLSBLong(image); |
| 595 | (void) ReadBlobLSBLong(image); |
| 596 | bmp_info.offset_bits=ReadBlobLSBLong(image); |
| 597 | bmp_info.size=ReadBlobLSBLong(image); |
| 598 | if (image->debug != MagickFalse) |
| 599 | (void) LogMagickEvent(CoderEvent,GetMagickModule()," BMP size: %u", |
| 600 | bmp_info.size); |
| 601 | if (bmp_info.size == 12) |
| 602 | { |
| 603 | /* |
| 604 | OS/2 BMP image file. |
| 605 | */ |
| 606 | bmp_info.width=(short) ReadBlobLSBShort(image); |
| 607 | bmp_info.height=(short) ReadBlobLSBShort(image); |
| 608 | bmp_info.planes=ReadBlobLSBShort(image); |
| 609 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 610 | bmp_info.x_pixels=0; |
| 611 | bmp_info.y_pixels=0; |
| 612 | bmp_info.number_colors=0; |
| 613 | bmp_info.compression=BI_RGB; |
| 614 | bmp_info.image_size=0; |
| 615 | bmp_info.alpha_mask=0; |
| 616 | if (image->debug != MagickFalse) |
| 617 | { |
| 618 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 619 | " Format: OS/2 Bitmap"); |
| 620 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 621 | " Geometry: %ldx%ld",bmp_info.width,bmp_info.height); |
| 622 | } |
| 623 | } |
| 624 | else |
| 625 | { |
| 626 | /* |
| 627 | Microsoft Windows BMP image file. |
| 628 | */ |
| 629 | if (bmp_info.size < 40) |
| 630 | ThrowReaderException(CorruptImageError,"NonOS2HeaderSizeError"); |
| 631 | bmp_info.width=(int) ReadBlobLSBLong(image); |
| 632 | bmp_info.height=(int) ReadBlobLSBLong(image); |
| 633 | bmp_info.planes=ReadBlobLSBShort(image); |
| 634 | bmp_info.bits_per_pixel=ReadBlobLSBShort(image); |
| 635 | bmp_info.compression=ReadBlobLSBLong(image); |
| 636 | bmp_info.image_size=ReadBlobLSBLong(image); |
| 637 | bmp_info.x_pixels=ReadBlobLSBLong(image); |
| 638 | bmp_info.y_pixels=ReadBlobLSBLong(image); |
| 639 | bmp_info.number_colors=ReadBlobLSBLong(image); |
| 640 | bmp_info.colors_important=ReadBlobLSBLong(image); |
| 641 | profile_data=0; |
| 642 | profile_size=0; |
| 643 | if (image->debug != MagickFalse) |
| 644 | { |
| 645 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 646 | " Format: MS Windows bitmap"); |
| 647 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 648 | " Geometry: %ldx%ld",bmp_info.width,bmp_info.height); |
| 649 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 650 | " Bits per pixel: %d",bmp_info.bits_per_pixel); |
| 651 | switch ((int) bmp_info.compression) |
| 652 | { |
| 653 | case BI_RGB: |
| 654 | { |
| 655 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 656 | " Compression: BI_RGB"); |
| 657 | break; |
| 658 | } |
| 659 | case BI_RLE4: |
| 660 | { |
| 661 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 662 | " Compression: BI_RLE4"); |
| 663 | break; |
| 664 | } |
| 665 | case BI_RLE8: |
| 666 | { |
| 667 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 668 | " Compression: BI_RLE8"); |
| 669 | break; |
| 670 | } |
| 671 | case BI_BITFIELDS: |
| 672 | { |
| 673 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 674 | " Compression: BI_BITFIELDS"); |
| 675 | break; |
| 676 | } |
| 677 | case BI_PNG: |
| 678 | { |
| 679 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 680 | " Compression: BI_PNG"); |
| 681 | break; |
| 682 | } |
| 683 | case BI_JPEG: |
| 684 | { |
| 685 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 686 | " Compression: BI_JPEG"); |
| 687 | break; |
| 688 | } |
| 689 | default: |
| 690 | { |
| 691 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 692 | " Compression: UNKNOWN (%u)",bmp_info.compression); |
| 693 | } |
| 694 | } |
| 695 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 696 | " Number of colors: %u",bmp_info.number_colors); |
| 697 | } |
| 698 | bmp_info.red_mask=ReadBlobLSBLong(image); |
| 699 | bmp_info.green_mask=ReadBlobLSBLong(image); |
| 700 | bmp_info.blue_mask=ReadBlobLSBLong(image); |
| 701 | if (bmp_info.size > 40) |
| 702 | { |
| 703 | double |
| 704 | sum; |
| 705 | |
| 706 | /* |
| 707 | Read color management information. |
| 708 | */ |
| 709 | bmp_info.alpha_mask=ReadBlobLSBLong(image); |
| 710 | bmp_info.colorspace=(long) ReadBlobLSBLong(image); |
| 711 | /* |
| 712 | Decode 2^30 fixed point formatted CIE primaries. |
| 713 | */ |
| 714 | bmp_info.red_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 715 | bmp_info.red_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 716 | bmp_info.red_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 717 | bmp_info.green_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 718 | bmp_info.green_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 719 | bmp_info.green_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 720 | bmp_info.blue_primary.x=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 721 | bmp_info.blue_primary.y=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 722 | bmp_info.blue_primary.z=(double) ReadBlobLSBLong(image)/0x3ffffff; |
| 723 | sum=bmp_info.red_primary.x+bmp_info.red_primary.x+ |
| 724 | bmp_info.red_primary.z; |
| 725 | image->chromaticity.red_primary.x/=sum; |
| 726 | image->chromaticity.red_primary.y/=sum; |
| 727 | sum=bmp_info.green_primary.x+bmp_info.green_primary.x+ |
| 728 | bmp_info.green_primary.z; |
| 729 | image->chromaticity.green_primary.x/=sum; |
| 730 | image->chromaticity.green_primary.y/=sum; |
| 731 | sum=bmp_info.blue_primary.x+bmp_info.blue_primary.x+ |
| 732 | bmp_info.blue_primary.z; |
| 733 | image->chromaticity.blue_primary.x/=sum; |
| 734 | image->chromaticity.blue_primary.y/=sum; |
| 735 | /* |
| 736 | Decode 16^16 fixed point formatted gamma_scales. |
| 737 | */ |
| 738 | bmp_info.gamma_scale.x=(double) ReadBlobLSBLong(image)/0xffff; |
| 739 | bmp_info.gamma_scale.y=(double) ReadBlobLSBLong(image)/0xffff; |
| 740 | bmp_info.gamma_scale.z=(double) ReadBlobLSBLong(image)/0xffff; |
| 741 | /* |
| 742 | Compute a single gamma from the BMP 3-channel gamma. |
| 743 | */ |
| 744 | image->gamma=(bmp_info.gamma_scale.x+bmp_info.gamma_scale.y+ |
| 745 | bmp_info.gamma_scale.z)/3.0; |
| 746 | } |
| 747 | if (bmp_info.size > 108) |
| 748 | { |
| 749 | unsigned long |
| 750 | intent; |
| 751 | |
| 752 | /* |
| 753 | Read BMP Version 5 color management information. |
| 754 | */ |
| 755 | intent=ReadBlobLSBLong(image); |
| 756 | switch ((int) intent) |
| 757 | { |
| 758 | case LCS_GM_BUSINESS: |
| 759 | { |
| 760 | image->rendering_intent=SaturationIntent; |
| 761 | break; |
| 762 | } |
| 763 | case LCS_GM_GRAPHICS: |
| 764 | { |
| 765 | image->rendering_intent=RelativeIntent; |
| 766 | break; |
| 767 | } |
| 768 | case LCS_GM_IMAGES: |
| 769 | { |
| 770 | image->rendering_intent=PerceptualIntent; |
| 771 | break; |
| 772 | } |
| 773 | case LCS_GM_ABS_COLORIMETRIC: |
| 774 | { |
| 775 | image->rendering_intent=AbsoluteIntent; |
| 776 | break; |
| 777 | } |
| 778 | } |
| 779 | profile_data=ReadBlobLSBLong(image); |
| 780 | profile_size=ReadBlobLSBLong(image); |
| 781 | (void) ReadBlobLSBLong(image); /* Reserved byte */ |
| 782 | } |
| 783 | } |
| 784 | if ((bmp_info.compression != BI_RGB) && |
| 785 | ((MagickSizeType) bmp_info.file_size != GetBlobSize(image))) |
| 786 | (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError, |
| 787 | "LengthAndFilesizeDoNotMatch","`%s'",image->filename); |
| 788 | if (bmp_info.width <= 0) |
| 789 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 790 | if (bmp_info.height == 0) |
| 791 | ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| 792 | if (bmp_info.planes != 1) |
| 793 | ThrowReaderException(CorruptImageError,"StaticPlanesValueNotEqualToOne"); |
| 794 | if ((bmp_info.bits_per_pixel != 1) && (bmp_info.bits_per_pixel != 4) && |
| 795 | (bmp_info.bits_per_pixel != 8) && (bmp_info.bits_per_pixel != 16) && |
| 796 | (bmp_info.bits_per_pixel != 24) && (bmp_info.bits_per_pixel != 32)) |
| 797 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 798 | if (bmp_info.number_colors > (1U << bmp_info.bits_per_pixel)) |
| 799 | { |
| 800 | if (bmp_info.bits_per_pixel < 24) |
| 801 | ThrowReaderException(CorruptImageError,"UnrecognizedNumberOfColors"); |
| 802 | bmp_info.number_colors=0; |
| 803 | } |
| 804 | if (bmp_info.compression > 3) |
| 805 | ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); |
| 806 | if ((bmp_info.compression == 1) && (bmp_info.bits_per_pixel != 8)) |
| 807 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 808 | if ((bmp_info.compression == 2) && (bmp_info.bits_per_pixel != 4)) |
| 809 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 810 | if ((bmp_info.compression == 3) && (bmp_info.bits_per_pixel < 16)) |
| 811 | ThrowReaderException(CorruptImageError,"UnrecognizedBitsPerPixel"); |
| 812 | switch (bmp_info.compression) |
| 813 | { |
| 814 | case BI_RGB: |
| 815 | case BI_RLE8: |
| 816 | case BI_RLE4: |
| 817 | case BI_BITFIELDS: |
| 818 | break; |
| 819 | case BI_JPEG: |
| 820 | ThrowReaderException(CoderError,"JPEGCompressNotSupported"); |
| 821 | case BI_PNG: |
| 822 | ThrowReaderException(CoderError,"PNGCompressNotSupported"); |
| 823 | default: |
| 824 | ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); |
| 825 | } |
| 826 | image->columns=(unsigned long) MagickAbsoluteValue(bmp_info.width); |
| 827 | image->rows=(unsigned long) MagickAbsoluteValue(bmp_info.height); |
| 828 | image->depth=bmp_info.bits_per_pixel <= 8 ? bmp_info.bits_per_pixel : 8; |
| 829 | image->matte=bmp_info.alpha_mask != 0 ? MagickTrue : MagickFalse; |
| 830 | if ((bmp_info.number_colors != 0) || (bmp_info.bits_per_pixel < 16)) |
| 831 | { |
| 832 | image->storage_class=PseudoClass; |
| 833 | image->colors=bmp_info.number_colors; |
| 834 | if (image->colors == 0) |
| 835 | image->colors=1L << bmp_info.bits_per_pixel; |
| 836 | } |
| 837 | if (image->storage_class == PseudoClass) |
| 838 | { |
| 839 | unsigned char |
| 840 | *bmp_colormap; |
| 841 | |
| 842 | size_t |
| 843 | packet_size; |
| 844 | |
| 845 | /* |
| 846 | Read BMP raster colormap. |
| 847 | */ |
| 848 | if (image->debug != MagickFalse) |
| 849 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 850 | " Reading colormap of %ld colors",image->colors); |
| 851 | if (AcquireImageColormap(image,image->colors) == MagickFalse) |
| 852 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 853 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) |
| 854 | image->colors,4*sizeof(*bmp_colormap)); |
| 855 | if (bmp_colormap == (unsigned char *) NULL) |
| 856 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 857 | if ((bmp_info.size == 12) || (bmp_info.size == 64)) |
| 858 | packet_size=3; |
| 859 | else |
| 860 | packet_size=4; |
| 861 | offset=SeekBlob(image,start_position+14+bmp_info.size,SEEK_SET); |
| 862 | if (offset < 0) |
| 863 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 864 | count=ReadBlob(image,packet_size*image->colors,bmp_colormap); |
| 865 | if (count != (ssize_t) (packet_size*image->colors)) |
| 866 | ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| 867 | p=bmp_colormap; |
| 868 | for (i=0; i < (long) image->colors; i++) |
| 869 | { |
| 870 | image->colormap[i].blue=ScaleCharToQuantum(*p++); |
| 871 | image->colormap[i].green=ScaleCharToQuantum(*p++); |
| 872 | image->colormap[i].red=ScaleCharToQuantum(*p++); |
| 873 | if (packet_size == 4) |
| 874 | p++; |
| 875 | } |
| 876 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 877 | } |
| 878 | if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| 879 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 880 | break; |
| 881 | /* |
| 882 | Read image data. |
| 883 | */ |
| 884 | offset=SeekBlob(image,start_position+bmp_info.offset_bits,SEEK_SET); |
| 885 | if (offset < 0) |
| 886 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 887 | if (bmp_info.compression == BI_RLE4) |
| 888 | bmp_info.bits_per_pixel<<=1; |
| 889 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 890 | length=(size_t) bytes_per_line*image->rows; |
| 891 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->rows, |
| 892 | MagickMax(bytes_per_line,image->columns+256UL)*sizeof(*pixels)); |
| 893 | if (pixels == (unsigned char *) NULL) |
| 894 | ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| 895 | if ((bmp_info.compression == BI_RGB) || |
| 896 | (bmp_info.compression == BI_BITFIELDS)) |
| 897 | { |
| 898 | if (image->debug != MagickFalse) |
| 899 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 900 | " Reading pixels (%ld bytes)",(long) length); |
| 901 | count=ReadBlob(image,length,pixels); |
| 902 | if (count != (ssize_t) length) |
| 903 | ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| 904 | } |
| 905 | else |
| 906 | { |
| 907 | /* |
| 908 | Convert run-length encoded raster pixels. |
| 909 | */ |
| 910 | status=DecodeImage(image,bmp_info.compression,pixels); |
| 911 | if (status == MagickFalse) |
| 912 | ThrowReaderException(CorruptImageError, |
| 913 | "UnableToRunlengthDecodeImage"); |
| 914 | } |
| 915 | /* |
| 916 | Initialize image structure. |
| 917 | */ |
| 918 | image->x_resolution=(double) bmp_info.x_pixels/100.0; |
| 919 | image->y_resolution=(double) bmp_info.y_pixels/100.0; |
| 920 | image->units=PixelsPerCentimeterResolution; |
| 921 | /* |
| 922 | Convert BMP raster image to pixel packets. |
| 923 | */ |
| 924 | if (bmp_info.compression == BI_RGB) |
| 925 | { |
| 926 | bmp_info.alpha_mask=0; |
| 927 | bmp_info.red_mask=0x00ff0000U; |
| 928 | bmp_info.green_mask=0x0000ff00U; |
| 929 | bmp_info.blue_mask=0x000000ffU; |
| 930 | if (bmp_info.bits_per_pixel == 16) |
| 931 | { |
| 932 | /* |
| 933 | RGB555. |
| 934 | */ |
| 935 | bmp_info.red_mask=0x00007c00U; |
| 936 | bmp_info.green_mask=0x000003e0U; |
| 937 | bmp_info.blue_mask=0x0000001fU; |
| 938 | } |
| 939 | } |
| 940 | if ((bmp_info.bits_per_pixel == 16) || (bmp_info.bits_per_pixel == 32)) |
| 941 | { |
| 942 | register unsigned long |
| 943 | sample; |
| 944 | |
| 945 | /* |
| 946 | Get shift and quantum bits info from bitfield masks. |
| 947 | */ |
| 948 | (void) ResetMagickMemory(&shift,0,sizeof(shift)); |
| 949 | (void) ResetMagickMemory(&quantum_bits,0,sizeof(quantum_bits)); |
| 950 | if (bmp_info.red_mask != 0) |
| 951 | while (((bmp_info.red_mask << shift.red) & 0x80000000UL) == 0) |
| 952 | shift.red++; |
| 953 | if (bmp_info.green_mask != 0) |
| 954 | while (((bmp_info.green_mask << shift.green) & 0x80000000UL) == 0) |
| 955 | shift.green++; |
| 956 | if (bmp_info.blue_mask != 0) |
| 957 | while (((bmp_info.blue_mask << shift.blue) & 0x80000000UL) == 0) |
| 958 | shift.blue++; |
| 959 | if (bmp_info.alpha_mask != 0) |
| 960 | while (((bmp_info.alpha_mask << shift.opacity) & 0x80000000UL) == 0) |
| 961 | shift.opacity++; |
| 962 | sample=shift.red; |
| 963 | while (((bmp_info.red_mask << sample) & 0x80000000UL) != 0) |
| 964 | sample++; |
| 965 | quantum_bits.red=(Quantum) (sample-shift.red); |
| 966 | sample=shift.green; |
| 967 | while (((bmp_info.green_mask << sample) & 0x80000000UL) != 0) |
| 968 | sample++; |
| 969 | quantum_bits.green=(Quantum) (sample-shift.green); |
| 970 | sample=shift.blue; |
| 971 | while (((bmp_info.blue_mask << sample) & 0x80000000UL) != 0) |
| 972 | sample++; |
| 973 | quantum_bits.blue=(Quantum) (sample-shift.blue); |
| 974 | sample=shift.opacity; |
| 975 | while (((bmp_info.alpha_mask << sample) & 0x80000000UL) != 0) |
| 976 | sample++; |
| 977 | quantum_bits.opacity=(Quantum) (sample-shift.opacity); |
| 978 | } |
| 979 | switch (bmp_info.bits_per_pixel) |
| 980 | { |
| 981 | case 1: |
| 982 | { |
| 983 | /* |
| 984 | Convert bitmap scanline. |
| 985 | */ |
| 986 | for (y=(long) image->rows-1; y >= 0; y--) |
| 987 | { |
| 988 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 989 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 990 | if (q == (PixelPacket *) NULL) |
| 991 | break; |
| 992 | indexes=GetAuthenticIndexQueue(image); |
| 993 | for (x=0; x < ((long) image->columns-7); x+=8) |
| 994 | { |
| 995 | for (bit=0; bit < 8; bit++) |
| 996 | { |
| 997 | index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 998 | indexes[x+bit]=index; |
| 999 | *q++=image->colormap[(long) index]; |
| 1000 | } |
| 1001 | p++; |
| 1002 | } |
| 1003 | if ((image->columns % 8) != 0) |
| 1004 | { |
| 1005 | for (bit=0; bit < (image->columns % 8); bit++) |
| 1006 | { |
| 1007 | index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| 1008 | indexes[x+bit]=index; |
| 1009 | *q++=image->colormap[(long) index]; |
| 1010 | } |
| 1011 | p++; |
| 1012 | } |
| 1013 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1014 | break; |
| 1015 | if (image->previous == (Image *) NULL) |
| 1016 | { |
| 1017 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1018 | if (status == MagickFalse) |
| 1019 | break; |
| 1020 | } |
| 1021 | } |
| 1022 | break; |
| 1023 | } |
| 1024 | case 4: |
| 1025 | { |
| 1026 | /* |
| 1027 | Convert PseudoColor scanline. |
| 1028 | */ |
| 1029 | for (y=(long) image->rows-1; y >= 0; y--) |
| 1030 | { |
| 1031 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1032 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1033 | if (q == (PixelPacket *) NULL) |
| 1034 | break; |
| 1035 | indexes=GetAuthenticIndexQueue(image); |
| 1036 | for (x=0; x < ((long) image->columns-1); x+=2) |
| 1037 | { |
| 1038 | index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f); |
| 1039 | indexes[x]=index; |
| 1040 | *q++=image->colormap[(long) index]; |
| 1041 | index=ConstrainColormapIndex(image,*p & 0x0f); |
| 1042 | indexes[x+1]=index; |
| 1043 | *q++=image->colormap[(long) index]; |
| 1044 | p++; |
| 1045 | } |
| 1046 | if ((image->columns % 2) != 0) |
| 1047 | { |
| 1048 | index=ConstrainColormapIndex(image,(*p >> 4) & 0xf); |
| 1049 | indexes[x]=index; |
| 1050 | *q++=image->colormap[(long) index]; |
| 1051 | p++; |
| 1052 | } |
| 1053 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1054 | break; |
| 1055 | if (image->previous == (Image *) NULL) |
| 1056 | { |
| 1057 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1058 | if (status == MagickFalse) |
| 1059 | break; |
| 1060 | } |
| 1061 | } |
| 1062 | break; |
| 1063 | } |
| 1064 | case 8: |
| 1065 | { |
| 1066 | /* |
| 1067 | Convert PseudoColor scanline. |
| 1068 | */ |
| 1069 | if ((bmp_info.compression == BI_RLE8) || |
| 1070 | (bmp_info.compression == BI_RLE4)) |
| 1071 | bytes_per_line=image->columns; |
| 1072 | for (y=(long) image->rows-1; y >= 0; y--) |
| 1073 | { |
| 1074 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1075 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1076 | if (q == (PixelPacket *) NULL) |
| 1077 | break; |
| 1078 | indexes=GetAuthenticIndexQueue(image); |
| 1079 | for (x = (long)image->columns; x != 0; --x) |
| 1080 | { |
| 1081 | index=ConstrainColormapIndex(image,*p); |
| 1082 | *indexes++=index; |
| 1083 | *q=image->colormap[(long) index]; |
| 1084 | p++; |
| 1085 | q++; |
| 1086 | } |
| 1087 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1088 | break; |
| 1089 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1090 | if (image->previous == (Image *) NULL) |
| 1091 | { |
| 1092 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1093 | if (status == MagickFalse) |
| 1094 | break; |
| 1095 | } |
| 1096 | } |
| 1097 | break; |
| 1098 | } |
| 1099 | case 16: |
| 1100 | { |
| 1101 | unsigned long |
| 1102 | pixel; |
| 1103 | |
| 1104 | /* |
| 1105 | Convert bitfield encoded 16-bit PseudoColor scanline. |
| 1106 | */ |
| 1107 | if (bmp_info.compression != BI_RGB && |
| 1108 | bmp_info.compression != BI_BITFIELDS) |
| 1109 | ThrowReaderException(CorruptImageError, |
| 1110 | "UnrecognizedImageCompression"); |
| 1111 | bytes_per_line=2*(image->columns+image->columns % 2); |
| 1112 | image->storage_class=DirectClass; |
| 1113 | for (y=(long) image->rows-1; y >= 0; y--) |
| 1114 | { |
| 1115 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1116 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1117 | if (q == (PixelPacket *) NULL) |
| 1118 | break; |
| 1119 | for (x=0; x < (long) image->columns; x++) |
| 1120 | { |
| 1121 | pixel=(unsigned long) (*p++); |
| 1122 | pixel|=(*p++) << 8; |
| 1123 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1124 | if (quantum_bits.red == 5) |
| 1125 | red|=((red & 0xe000) >> 5); |
| 1126 | if (quantum_bits.red <= 8) |
| 1127 | red|=((red & 0xff00) >> 8); |
| 1128 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1129 | if (quantum_bits.green == 5) |
| 1130 | green|=((green & 0xe000) >> 5); |
| 1131 | if (quantum_bits.green == 6) |
| 1132 | green|=((green & 0xc000) >> 6); |
| 1133 | if (quantum_bits.green <= 8) |
| 1134 | green|=((green & 0xff00) >> 8); |
| 1135 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1136 | if (quantum_bits.blue == 5) |
| 1137 | blue|=((blue & 0xe000) >> 5); |
| 1138 | if (quantum_bits.blue <= 8) |
| 1139 | blue|=((blue & 0xff00) >> 8); |
| 1140 | opacity=((pixel & bmp_info.alpha_mask) << shift.opacity) >> 16; |
| 1141 | if (quantum_bits.opacity <= 8) |
| 1142 | opacity|=((opacity & 0xff00) >> 8); |
| 1143 | q->red=ScaleShortToQuantum((unsigned short) red); |
| 1144 | q->green=ScaleShortToQuantum((unsigned short) green); |
| 1145 | q->blue=ScaleShortToQuantum((unsigned short) blue); |
| 1146 | q->opacity=OpaqueOpacity; |
| 1147 | if (image->matte != MagickFalse) |
| 1148 | q->opacity=ScaleShortToQuantum((unsigned short) opacity); |
| 1149 | q++; |
| 1150 | } |
| 1151 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1152 | break; |
| 1153 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1154 | if (image->previous == (Image *) NULL) |
| 1155 | { |
| 1156 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1157 | if (status == MagickFalse) |
| 1158 | break; |
| 1159 | } |
| 1160 | } |
| 1161 | break; |
| 1162 | } |
| 1163 | case 24: |
| 1164 | { |
| 1165 | /* |
| 1166 | Convert DirectColor scanline. |
| 1167 | */ |
| 1168 | bytes_per_line=4*((image->columns*24+31)/32); |
| 1169 | for (y=(long) image->rows-1; y >= 0; y--) |
| 1170 | { |
| 1171 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1172 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1173 | if (q == (PixelPacket *) NULL) |
| 1174 | break; |
| 1175 | for (x=0; x < (long) image->columns; x++) |
| 1176 | { |
| 1177 | q->blue=ScaleCharToQuantum(*p++); |
| 1178 | q->green=ScaleCharToQuantum(*p++); |
| 1179 | q->red=ScaleCharToQuantum(*p++); |
| 1180 | q++; |
| 1181 | } |
| 1182 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1183 | break; |
| 1184 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1185 | if (image->previous == (Image *) NULL) |
| 1186 | { |
| 1187 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1188 | if (status == MagickFalse) |
| 1189 | break; |
| 1190 | } |
| 1191 | } |
| 1192 | break; |
| 1193 | } |
| 1194 | case 32: |
| 1195 | { |
| 1196 | /* |
| 1197 | Convert bitfield encoded DirectColor scanline. |
| 1198 | */ |
| 1199 | if ((bmp_info.compression != BI_RGB) && |
| 1200 | (bmp_info.compression != BI_BITFIELDS)) |
| 1201 | ThrowReaderException(CorruptImageError, |
| 1202 | "UnrecognizedImageCompression"); |
| 1203 | bytes_per_line=4*(image->columns); |
| 1204 | for (y=(long) image->rows-1; y >= 0; y--) |
| 1205 | { |
| 1206 | unsigned long |
| 1207 | pixel; |
| 1208 | |
| 1209 | p=pixels+(image->rows-y-1)*bytes_per_line; |
| 1210 | q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| 1211 | if (q == (PixelPacket *) NULL) |
| 1212 | break; |
| 1213 | for (x=0; x < (long) image->columns; x++) |
| 1214 | { |
| 1215 | pixel=(unsigned long) (*p++); |
| 1216 | pixel|=(*p++ << 8); |
| 1217 | pixel|=(*p++ << 16); |
| 1218 | pixel|=(*p++ << 24); |
| 1219 | red=((pixel & bmp_info.red_mask) << shift.red) >> 16; |
| 1220 | if (quantum_bits.red == 8) |
| 1221 | red|=(red >> 8); |
| 1222 | green=((pixel & bmp_info.green_mask) << shift.green) >> 16; |
| 1223 | if (quantum_bits.green == 8) |
| 1224 | green|=(green >> 8); |
| 1225 | blue=((pixel & bmp_info.blue_mask) << shift.blue) >> 16; |
| 1226 | if (quantum_bits.blue == 8) |
| 1227 | blue|=(blue >> 8); |
| 1228 | opacity=((pixel & bmp_info.alpha_mask) << shift.opacity) >> 16; |
| 1229 | if (quantum_bits.opacity == 8) |
| 1230 | opacity|=(opacity >> 8); |
| 1231 | q->red=ScaleShortToQuantum((unsigned short) red); |
| 1232 | q->green=ScaleShortToQuantum((unsigned short) green); |
| 1233 | q->blue=ScaleShortToQuantum((unsigned short) blue); |
| 1234 | q->opacity=OpaqueOpacity; |
| 1235 | if (image->matte != MagickFalse) |
| 1236 | q->opacity=ScaleShortToQuantum((unsigned short) opacity); |
| 1237 | q++; |
| 1238 | } |
| 1239 | if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| 1240 | break; |
| 1241 | offset=(MagickOffsetType) (image->rows-y-1); |
| 1242 | if (image->previous == (Image *) NULL) |
| 1243 | { |
| 1244 | status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| 1245 | if (status == MagickFalse) |
| 1246 | break; |
| 1247 | } |
| 1248 | } |
| 1249 | break; |
| 1250 | } |
| 1251 | default: |
| 1252 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 1253 | } |
| 1254 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1255 | if (EOFBlob(image) != MagickFalse) |
| 1256 | { |
| 1257 | ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| 1258 | image->filename); |
| 1259 | break; |
| 1260 | } |
| 1261 | if (bmp_info.height < 0) |
| 1262 | { |
| 1263 | Image |
| 1264 | *flipped_image; |
| 1265 | |
| 1266 | /* |
| 1267 | Correct image orientation. |
| 1268 | */ |
| 1269 | flipped_image=FlipImage(image,exception); |
| 1270 | if (flipped_image == (Image *) NULL) |
| 1271 | { |
| 1272 | image=DestroyImageList(image); |
| 1273 | return((Image *) NULL); |
| 1274 | } |
| 1275 | DuplicateBlob(flipped_image,image); |
| 1276 | image=DestroyImage(image); |
| 1277 | image=flipped_image; |
| 1278 | } |
| 1279 | /* |
| 1280 | Proceed to next image. |
| 1281 | */ |
| 1282 | if (image_info->number_scenes != 0) |
| 1283 | if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| 1284 | break; |
| 1285 | *magick='\0'; |
| 1286 | if (bmp_info.ba_offset != 0) |
| 1287 | { |
| 1288 | offset=SeekBlob(image,(MagickOffsetType) bmp_info.ba_offset,SEEK_SET); |
| 1289 | if (offset < 0) |
| 1290 | ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| 1291 | } |
| 1292 | count=ReadBlob(image,2,magick); |
| 1293 | if ((count == 2) && (IsBMP(magick,2) != MagickFalse)) |
| 1294 | { |
| 1295 | /* |
| 1296 | Acquire next image structure. |
| 1297 | */ |
| 1298 | AcquireNextImage(image_info,image); |
| 1299 | if (GetNextImageInList(image) == (Image *) NULL) |
| 1300 | { |
| 1301 | image=DestroyImageList(image); |
| 1302 | return((Image *) NULL); |
| 1303 | } |
| 1304 | image=SyncNextImageInList(image); |
| 1305 | status=SetImageProgress(image,LoadImagesTag,TellBlob(image), |
| 1306 | GetBlobSize(image)); |
| 1307 | if (status == MagickFalse) |
| 1308 | break; |
| 1309 | } |
| 1310 | } while (IsBMP(magick,2) != MagickFalse); |
| 1311 | (void) CloseBlob(image); |
| 1312 | return(GetFirstImageInList(image)); |
| 1313 | } |
| 1314 | |
| 1315 | /* |
| 1316 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1317 | % % |
| 1318 | % % |
| 1319 | % % |
| 1320 | % R e g i s t e r B M P I m a g e % |
| 1321 | % % |
| 1322 | % % |
| 1323 | % % |
| 1324 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1325 | % |
| 1326 | % RegisterBMPImage() adds attributes for the BMP image format to |
| 1327 | % the list of supported formats. The attributes include the image format |
| 1328 | % tag, a method to read and/or write the format, whether the format |
| 1329 | % supports the saving of more than one frame to the same file or blob, |
| 1330 | % whether the format supports native in-memory I/O, and a brief |
| 1331 | % description of the format. |
| 1332 | % |
| 1333 | % The format of the RegisterBMPImage method is: |
| 1334 | % |
| 1335 | % unsigned long RegisterBMPImage(void) |
| 1336 | % |
| 1337 | */ |
| 1338 | ModuleExport unsigned long RegisterBMPImage(void) |
| 1339 | { |
| 1340 | MagickInfo |
| 1341 | *entry; |
| 1342 | |
| 1343 | entry=SetMagickInfo("BMP"); |
| 1344 | entry->decoder=(DecodeImageHandler *) ReadBMPImage; |
| 1345 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1346 | entry->magick=(IsImageFormatHandler *) IsBMP; |
| 1347 | entry->description=ConstantString("Microsoft Windows bitmap image"); |
| 1348 | entry->module=ConstantString("BMP"); |
| 1349 | entry->adjoin=MagickFalse; |
| 1350 | entry->seekable_stream=MagickTrue; |
| 1351 | (void) RegisterMagickInfo(entry); |
| 1352 | entry=SetMagickInfo("BMP2"); |
| 1353 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1354 | entry->magick=(IsImageFormatHandler *) IsBMP; |
| 1355 | entry->description=ConstantString("Microsoft Windows bitmap image v2"); |
| 1356 | entry->module=ConstantString("BMP"); |
| 1357 | entry->adjoin=MagickFalse; |
| 1358 | entry->seekable_stream=MagickTrue; |
| 1359 | (void) RegisterMagickInfo(entry); |
| 1360 | entry=SetMagickInfo("BMP3"); |
| 1361 | entry->encoder=(EncodeImageHandler *) WriteBMPImage; |
| 1362 | entry->magick=(IsImageFormatHandler *) IsBMP; |
| 1363 | entry->description=ConstantString("Microsoft Windows bitmap image v3"); |
| 1364 | entry->module=ConstantString("BMP"); |
| 1365 | entry->adjoin=MagickFalse; |
| 1366 | entry->seekable_stream=MagickTrue; |
| 1367 | (void) RegisterMagickInfo(entry); |
| 1368 | return(MagickImageCoderSignature); |
| 1369 | } |
| 1370 | |
| 1371 | /* |
| 1372 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1373 | % % |
| 1374 | % % |
| 1375 | % % |
| 1376 | % U n r e g i s t e r B M P I m a g e % |
| 1377 | % % |
| 1378 | % % |
| 1379 | % % |
| 1380 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1381 | % |
| 1382 | % UnregisterBMPImage() removes format registrations made by the |
| 1383 | % BMP module from the list of supported formats. |
| 1384 | % |
| 1385 | % The format of the UnregisterBMPImage method is: |
| 1386 | % |
| 1387 | % UnregisterBMPImage(void) |
| 1388 | % |
| 1389 | */ |
| 1390 | ModuleExport void UnregisterBMPImage(void) |
| 1391 | { |
| 1392 | (void) UnregisterMagickInfo("BMP"); |
| 1393 | (void) UnregisterMagickInfo("BMP2"); |
| 1394 | (void) UnregisterMagickInfo("BMP3"); |
| 1395 | } |
| 1396 | |
| 1397 | /* |
| 1398 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1399 | % % |
| 1400 | % % |
| 1401 | % % |
| 1402 | % W r i t e B M P I m a g e % |
| 1403 | % % |
| 1404 | % % |
| 1405 | % % |
| 1406 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1407 | % |
| 1408 | % WriteBMPImage() writes an image in Microsoft Windows bitmap encoded |
| 1409 | % image format, version 3 for Windows or (if the image has a matte channel) |
| 1410 | % version 4. |
| 1411 | % |
| 1412 | % The format of the WriteBMPImage method is: |
| 1413 | % |
| 1414 | % MagickBooleanType WriteBMPImage(const ImageInfo *image_info,Image *image) |
| 1415 | % |
| 1416 | % A description of each parameter follows. |
| 1417 | % |
| 1418 | % o image_info: the image info. |
| 1419 | % |
| 1420 | % o image: The image. |
| 1421 | % |
| 1422 | */ |
| 1423 | static MagickBooleanType WriteBMPImage(const ImageInfo *image_info,Image *image) |
| 1424 | { |
| 1425 | BMPInfo |
| 1426 | bmp_info; |
| 1427 | |
| 1428 | const StringInfo |
| 1429 | *profile; |
| 1430 | |
| 1431 | long |
| 1432 | y; |
| 1433 | |
| 1434 | MagickBooleanType |
| 1435 | have_color_info, |
| 1436 | status; |
| 1437 | |
| 1438 | MagickOffsetType |
| 1439 | scene; |
| 1440 | |
| 1441 | register const IndexPacket |
| 1442 | *indexes; |
| 1443 | |
| 1444 | register const PixelPacket |
| 1445 | *p; |
| 1446 | |
| 1447 | register long |
| 1448 | i, |
| 1449 | x; |
| 1450 | |
| 1451 | register unsigned char |
| 1452 | *q; |
| 1453 | |
| 1454 | unsigned char |
| 1455 | *bmp_data, |
| 1456 | *pixels; |
| 1457 | |
| 1458 | unsigned long |
| 1459 | bytes_per_line, |
| 1460 | type; |
| 1461 | |
| 1462 | /* |
| 1463 | Open output image file. |
| 1464 | */ |
| 1465 | assert(image_info != (const ImageInfo *) NULL); |
| 1466 | assert(image_info->signature == MagickSignature); |
| 1467 | assert(image != (Image *) NULL); |
| 1468 | assert(image->signature == MagickSignature); |
| 1469 | if (image->debug != MagickFalse) |
| 1470 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1471 | status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); |
| 1472 | if (status == MagickFalse) |
| 1473 | return(status); |
| 1474 | type=4; |
| 1475 | if (LocaleCompare(image_info->magick,"BMP2") == 0) |
| 1476 | type=2; |
| 1477 | else |
| 1478 | if (LocaleCompare(image_info->magick,"BMP3") == 0) |
| 1479 | type=3; |
| 1480 | scene=0; |
| 1481 | do |
| 1482 | { |
| 1483 | /* |
| 1484 | Initialize BMP raster file header. |
| 1485 | */ |
| 1486 | if (image->colorspace != RGBColorspace) |
| 1487 | (void) TransformImageColorspace(image,RGBColorspace); |
| 1488 | (void) ResetMagickMemory(&bmp_info,0,sizeof(bmp_info)); |
| 1489 | bmp_info.file_size=14+12; |
| 1490 | if (type > 2) |
| 1491 | bmp_info.file_size+=28; |
| 1492 | bmp_info.offset_bits=bmp_info.file_size; |
| 1493 | bmp_info.compression=BI_RGB; |
| 1494 | if ((image->storage_class == PseudoClass) && (image->colors > 256)) |
| 1495 | (void) SetImageStorageClass(image,DirectClass); |
| 1496 | if (image->storage_class != DirectClass) |
| 1497 | { |
| 1498 | /* |
| 1499 | Colormapped BMP raster. |
| 1500 | */ |
| 1501 | bmp_info.bits_per_pixel=8; |
| 1502 | if (image->colors <= 2) |
| 1503 | bmp_info.bits_per_pixel=1; |
| 1504 | else |
| 1505 | if (image->colors <= 16) |
| 1506 | bmp_info.bits_per_pixel=4; |
| 1507 | else |
| 1508 | if (image->colors <= 256) |
| 1509 | bmp_info.bits_per_pixel=8; |
| 1510 | if (image_info->compression == RLECompression) |
| 1511 | bmp_info.bits_per_pixel=8; |
| 1512 | bmp_info.number_colors=1U << bmp_info.bits_per_pixel; |
| 1513 | if (image->matte != MagickFalse) |
| 1514 | (void) SetImageStorageClass(image,DirectClass); |
| 1515 | else |
| 1516 | if ((unsigned long) bmp_info.number_colors < image->colors) |
| 1517 | (void) SetImageStorageClass(image,DirectClass); |
| 1518 | else |
| 1519 | { |
| 1520 | bmp_info.file_size+=3*(1UL << bmp_info.bits_per_pixel); |
| 1521 | bmp_info.offset_bits+=3*(1UL << bmp_info.bits_per_pixel); |
| 1522 | if (type > 2) |
| 1523 | { |
| 1524 | bmp_info.file_size+=(1UL << bmp_info.bits_per_pixel); |
| 1525 | bmp_info.offset_bits+=(1UL << bmp_info.bits_per_pixel); |
| 1526 | } |
| 1527 | } |
| 1528 | } |
| 1529 | if (image->storage_class == DirectClass) |
| 1530 | { |
| 1531 | /* |
| 1532 | Full color BMP raster. |
| 1533 | */ |
| 1534 | bmp_info.number_colors=0; |
| 1535 | bmp_info.bits_per_pixel=(unsigned short) |
| 1536 | ((type > 3) && (image->matte != MagickFalse) ? 32 : 24); |
| 1537 | bmp_info.compression=(unsigned int) ((type > 3) && |
| 1538 | (image->matte != MagickFalse) ? BI_BITFIELDS : BI_RGB); |
| 1539 | } |
| 1540 | bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); |
| 1541 | bmp_info.ba_offset=0; |
| 1542 | profile=GetImageProfile(image,"icc"); |
| 1543 | have_color_info=(image->rendering_intent != UndefinedIntent) || |
| 1544 | (profile != (StringInfo *) NULL) || (image->gamma != 0.0) ? MagickTrue : |
| 1545 | MagickFalse; |
| 1546 | if (type == 2) |
| 1547 | bmp_info.size=12; |
| 1548 | else |
| 1549 | if ((type == 3) || ((image->matte == MagickFalse) && |
| 1550 | (have_color_info == MagickFalse))) |
| 1551 | { |
| 1552 | type=3; |
| 1553 | bmp_info.size=40; |
| 1554 | } |
| 1555 | else |
| 1556 | { |
| 1557 | int |
| 1558 | extra_size; |
| 1559 | |
| 1560 | bmp_info.size=108; |
| 1561 | extra_size=68; |
| 1562 | if ((image->rendering_intent != UndefinedIntent) || |
| 1563 | (profile != (StringInfo *) NULL)) |
| 1564 | { |
| 1565 | bmp_info.size=124; |
| 1566 | extra_size+=16; |
| 1567 | } |
| 1568 | bmp_info.file_size+=extra_size; |
| 1569 | bmp_info.offset_bits+=extra_size; |
| 1570 | } |
| 1571 | bmp_info.width=(long) image->columns; |
| 1572 | bmp_info.height=(long) image->rows; |
| 1573 | bmp_info.planes=1; |
| 1574 | bmp_info.image_size=(unsigned int) (bytes_per_line*image->rows); |
| 1575 | bmp_info.file_size+=bmp_info.image_size; |
| 1576 | bmp_info.x_pixels=75*39; |
| 1577 | bmp_info.y_pixels=75*39; |
| 1578 | switch (image->units) |
| 1579 | { |
| 1580 | case UndefinedResolution: |
| 1581 | case PixelsPerInchResolution: |
| 1582 | { |
| 1583 | bmp_info.x_pixels=(unsigned int) (100.0*image->x_resolution/2.54); |
| 1584 | bmp_info.y_pixels=(unsigned int) (100.0*image->y_resolution/2.54); |
| 1585 | break; |
| 1586 | } |
| 1587 | case PixelsPerCentimeterResolution: |
| 1588 | { |
| 1589 | bmp_info.x_pixels=(unsigned int) (100.0*image->x_resolution); |
| 1590 | bmp_info.y_pixels=(unsigned int) (100.0*image->y_resolution); |
| 1591 | break; |
| 1592 | } |
| 1593 | } |
| 1594 | bmp_info.colors_important=bmp_info.number_colors; |
| 1595 | /* |
| 1596 | Convert MIFF to BMP raster pixels. |
| 1597 | */ |
| 1598 | pixels=(unsigned char *) AcquireQuantumMemory((size_t) bmp_info.image_size, |
| 1599 | sizeof(*pixels)); |
| 1600 | if (pixels == (unsigned char *) NULL) |
| 1601 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1602 | (void) ResetMagickMemory(pixels,0,(size_t) bmp_info.image_size); |
| 1603 | switch (bmp_info.bits_per_pixel) |
| 1604 | { |
| 1605 | case 1: |
| 1606 | { |
| 1607 | unsigned long |
| 1608 | bit, |
| 1609 | byte; |
| 1610 | |
| 1611 | /* |
| 1612 | Convert PseudoClass image to a BMP monochrome image. |
| 1613 | */ |
| 1614 | for (y=0; y < (long) image->rows; y++) |
| 1615 | { |
| 1616 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1617 | if (p == (const PixelPacket *) NULL) |
| 1618 | break; |
| 1619 | indexes=GetVirtualIndexQueue(image); |
| 1620 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1621 | bit=0; |
| 1622 | byte=0; |
| 1623 | for (x=0; x < (long) image->columns; x++) |
| 1624 | { |
| 1625 | byte<<=1; |
| 1626 | byte|=indexes[x] != 0 ? 0x01 : 0x00; |
| 1627 | bit++; |
| 1628 | if (bit == 8) |
| 1629 | { |
| 1630 | *q++=(unsigned char) byte; |
| 1631 | bit=0; |
| 1632 | byte=0; |
| 1633 | } |
| 1634 | } |
| 1635 | if (bit != 0) |
| 1636 | { |
| 1637 | *q++=(unsigned char) (byte << (8-bit)); |
| 1638 | x++; |
| 1639 | } |
| 1640 | for (x=(long) (image->columns+7)/8; x < (long) bytes_per_line; x++) |
| 1641 | *q++=0x00; |
| 1642 | if (image->previous == (Image *) NULL) |
| 1643 | { |
| 1644 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 1645 | if (status == MagickFalse) |
| 1646 | break; |
| 1647 | } |
| 1648 | } |
| 1649 | break; |
| 1650 | } |
| 1651 | case 4: |
| 1652 | { |
| 1653 | unsigned long |
| 1654 | nibble, |
| 1655 | byte; |
| 1656 | |
| 1657 | /* |
| 1658 | Convert PseudoClass image to a BMP monochrome image. |
| 1659 | */ |
| 1660 | for (y=0; y < (long) image->rows; y++) |
| 1661 | { |
| 1662 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1663 | if (p == (const PixelPacket *) NULL) |
| 1664 | break; |
| 1665 | indexes=GetVirtualIndexQueue(image); |
| 1666 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1667 | nibble=0; |
| 1668 | byte=0; |
| 1669 | for (x=0; x < (long) image->columns; x++) |
| 1670 | { |
| 1671 | byte<<=4; |
| 1672 | byte|=((unsigned long) indexes[x] & 0x0f); |
| 1673 | nibble++; |
| 1674 | if (nibble == 2) |
| 1675 | { |
| 1676 | *q++=(unsigned char) byte; |
| 1677 | nibble=0; |
| 1678 | byte=0; |
| 1679 | } |
| 1680 | } |
| 1681 | if (nibble != 0) |
| 1682 | { |
| 1683 | *q++=(unsigned char) (byte << 4); |
| 1684 | x++; |
| 1685 | } |
| 1686 | for (x=(long) (image->columns+1)/2; x < (long) bytes_per_line; x++) |
| 1687 | *q++=0x00; |
| 1688 | if (image->previous == (Image *) NULL) |
| 1689 | { |
| 1690 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 1691 | if (status == MagickFalse) |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | break; |
| 1696 | } |
| 1697 | case 8: |
| 1698 | { |
| 1699 | /* |
| 1700 | Convert PseudoClass packet to BMP pixel. |
| 1701 | */ |
| 1702 | for (y=0; y < (long) image->rows; y++) |
| 1703 | { |
| 1704 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1705 | if (p == (const PixelPacket *) NULL) |
| 1706 | break; |
| 1707 | indexes=GetVirtualIndexQueue(image); |
| 1708 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1709 | for (x=0; x < (long) image->columns; x++) |
| 1710 | *q++=(unsigned char) indexes[x]; |
| 1711 | for ( ; x < (long) bytes_per_line; x++) |
| 1712 | *q++=0x00; |
| 1713 | if (image->previous == (Image *) NULL) |
| 1714 | { |
| 1715 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 1716 | if (status == MagickFalse) |
| 1717 | break; |
| 1718 | } |
| 1719 | } |
| 1720 | break; |
| 1721 | } |
| 1722 | case 24: |
| 1723 | { |
| 1724 | /* |
| 1725 | Convert DirectClass packet to BMP BGR888. |
| 1726 | */ |
| 1727 | for (y=0; y < (long) image->rows; y++) |
| 1728 | { |
| 1729 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1730 | if (p == (const PixelPacket *) NULL) |
| 1731 | break; |
| 1732 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1733 | for (x=0; x < (long) image->columns; x++) |
| 1734 | { |
| 1735 | *q++=ScaleQuantumToChar(p->blue); |
| 1736 | *q++=ScaleQuantumToChar(p->green); |
| 1737 | *q++=ScaleQuantumToChar(p->red); |
| 1738 | p++; |
| 1739 | } |
| 1740 | for (x=3L*(long) image->columns; x < (long) bytes_per_line; x++) |
| 1741 | *q++=0x00; |
| 1742 | if (image->previous == (Image *) NULL) |
| 1743 | { |
| 1744 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 1745 | if (status == MagickFalse) |
| 1746 | break; |
| 1747 | } |
| 1748 | } |
| 1749 | break; |
| 1750 | } |
| 1751 | case 32: |
| 1752 | { |
| 1753 | /* |
| 1754 | Convert DirectClass packet to ARGB8888 pixel. |
| 1755 | */ |
| 1756 | for (y=0; y < (long) image->rows; y++) |
| 1757 | { |
| 1758 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 1759 | if (p == (const PixelPacket *) NULL) |
| 1760 | break; |
| 1761 | q=pixels+(image->rows-y-1)*bytes_per_line; |
| 1762 | for (x=0; x < (long) image->columns; x++) |
| 1763 | { |
| 1764 | *q++=ScaleQuantumToChar(p->blue); |
| 1765 | *q++=ScaleQuantumToChar(p->green); |
| 1766 | *q++=ScaleQuantumToChar(p->red); |
| 1767 | *q++=ScaleQuantumToChar(p->opacity); |
| 1768 | p++; |
| 1769 | } |
| 1770 | if (image->previous == (Image *) NULL) |
| 1771 | { |
| 1772 | status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| 1773 | if (status == MagickFalse) |
| 1774 | break; |
| 1775 | } |
| 1776 | } |
| 1777 | break; |
| 1778 | } |
| 1779 | } |
| 1780 | if ((type > 2) && (bmp_info.bits_per_pixel == 8)) |
| 1781 | if (image_info->compression != NoCompression) |
| 1782 | { |
| 1783 | size_t |
| 1784 | length; |
| 1785 | |
| 1786 | /* |
| 1787 | Convert run-length encoded raster pixels. |
| 1788 | */ |
| 1789 | length=(size_t) (2*(bytes_per_line+2)*(image->rows+2)+2); |
| 1790 | bmp_data=(unsigned char *) NULL; |
| 1791 | if (~length >= bytes_per_line) |
| 1792 | bmp_data=(unsigned char *) AcquireQuantumMemory(length+ |
| 1793 | bytes_per_line,sizeof(*bmp_data)); |
| 1794 | if (bmp_data == (unsigned char *) NULL) |
| 1795 | { |
| 1796 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1797 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1798 | } |
| 1799 | bmp_info.file_size-=bmp_info.image_size; |
| 1800 | bmp_info.image_size=(unsigned int) EncodeImage(image,bytes_per_line, |
| 1801 | pixels,bmp_data); |
| 1802 | bmp_info.file_size+=bmp_info.image_size; |
| 1803 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 1804 | pixels=bmp_data; |
| 1805 | bmp_info.compression=BI_RLE8; |
| 1806 | } |
| 1807 | /* |
| 1808 | Write BMP for Windows, all versions, 14-byte header. |
| 1809 | */ |
| 1810 | if (image->debug != MagickFalse) |
| 1811 | { |
| 1812 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1813 | " Writing BMP version %ld datastream",type); |
| 1814 | if (image->storage_class == DirectClass) |
| 1815 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1816 | " Storage class=DirectClass"); |
| 1817 | else |
| 1818 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1819 | " Storage class=PseudoClass"); |
| 1820 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1821 | " Image depth=%lu",image->depth); |
| 1822 | if (image->matte != MagickFalse) |
| 1823 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1824 | " Matte=True"); |
| 1825 | else |
| 1826 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1827 | " Matte=MagickFalse"); |
| 1828 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1829 | " BMP bits_per_pixel=%d",bmp_info.bits_per_pixel); |
| 1830 | switch ((int) bmp_info.compression) |
| 1831 | { |
| 1832 | case BI_RGB: |
| 1833 | { |
| 1834 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1835 | " Compression=BI_RGB"); |
| 1836 | break; |
| 1837 | } |
| 1838 | case BI_RLE8: |
| 1839 | { |
| 1840 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1841 | " Compression=BI_RLE8"); |
| 1842 | break; |
| 1843 | } |
| 1844 | case BI_BITFIELDS: |
| 1845 | { |
| 1846 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1847 | " Compression=BI_BITFIELDS"); |
| 1848 | break; |
| 1849 | } |
| 1850 | default: |
| 1851 | { |
| 1852 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1853 | " Compression=UNKNOWN (%u)",bmp_info.compression); |
| 1854 | break; |
| 1855 | } |
| 1856 | } |
| 1857 | if (bmp_info.number_colors == 0) |
| 1858 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1859 | " Number_colors=unspecified"); |
| 1860 | else |
| 1861 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1862 | " Number_colors=%u",bmp_info.number_colors); |
| 1863 | } |
| 1864 | (void) WriteBlob(image,2,(unsigned char *) "BM"); |
| 1865 | (void) WriteBlobLSBLong(image,bmp_info.file_size); |
| 1866 | (void) WriteBlobLSBLong(image,bmp_info.ba_offset); /* always 0 */ |
| 1867 | (void) WriteBlobLSBLong(image,bmp_info.offset_bits); |
| 1868 | if (type == 2) |
| 1869 | { |
| 1870 | /* |
| 1871 | Write 12-byte version 2 bitmap header. |
| 1872 | */ |
| 1873 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1874 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.width); |
| 1875 | (void) WriteBlobLSBShort(image,(unsigned short) bmp_info.height); |
| 1876 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1877 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1878 | } |
| 1879 | else |
| 1880 | { |
| 1881 | /* |
| 1882 | Write 40-byte version 3+ bitmap header. |
| 1883 | */ |
| 1884 | (void) WriteBlobLSBLong(image,bmp_info.size); |
| 1885 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.width); |
| 1886 | (void) WriteBlobLSBLong(image,(unsigned int) bmp_info.height); |
| 1887 | (void) WriteBlobLSBShort(image,bmp_info.planes); |
| 1888 | (void) WriteBlobLSBShort(image,bmp_info.bits_per_pixel); |
| 1889 | (void) WriteBlobLSBLong(image,bmp_info.compression); |
| 1890 | (void) WriteBlobLSBLong(image,bmp_info.image_size); |
| 1891 | (void) WriteBlobLSBLong(image,bmp_info.x_pixels); |
| 1892 | (void) WriteBlobLSBLong(image,bmp_info.y_pixels); |
| 1893 | (void) WriteBlobLSBLong(image,bmp_info.number_colors); |
| 1894 | (void) WriteBlobLSBLong(image,bmp_info.colors_important); |
| 1895 | } |
| 1896 | if ((type > 3) && ((image->matte != MagickFalse) || |
| 1897 | (have_color_info != MagickFalse))) |
| 1898 | { |
| 1899 | /* |
| 1900 | Write the rest of the 108-byte BMP Version 4 header. |
| 1901 | */ |
| 1902 | (void) WriteBlobLSBLong(image,0x00ff0000U); /* Red mask */ |
| 1903 | (void) WriteBlobLSBLong(image,0x0000ff00U); /* Green mask */ |
| 1904 | (void) WriteBlobLSBLong(image,0x000000ffU); /* Blue mask */ |
| 1905 | (void) WriteBlobLSBLong(image,0xff000000U); /* Alpha mask */ |
| 1906 | (void) WriteBlobLSBLong(image,0x00000001U); /* CSType==Calib. RGB */ |
| 1907 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1908 | image->chromaticity.red_primary.x*0x3ffffff); |
| 1909 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1910 | image->chromaticity.red_primary.y*0x3ffffff); |
| 1911 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1912 | (1.000f-(image->chromaticity.red_primary.x+ |
| 1913 | image->chromaticity.red_primary.y)*0x3ffffff)); |
| 1914 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1915 | image->chromaticity.green_primary.x*0x3ffffff); |
| 1916 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1917 | image->chromaticity.green_primary.y*0x3ffffff); |
| 1918 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1919 | (1.000f-(image->chromaticity.green_primary.x+ |
| 1920 | image->chromaticity.green_primary.y)*0x3ffffff)); |
| 1921 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1922 | image->chromaticity.blue_primary.x*0x3ffffff); |
| 1923 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1924 | image->chromaticity.blue_primary.y*0x3ffffff); |
| 1925 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1926 | (1.000f-(image->chromaticity.blue_primary.x+ |
| 1927 | image->chromaticity.blue_primary.y)*0x3ffffff)); |
| 1928 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1929 | bmp_info.gamma_scale.x*0xffff); |
| 1930 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1931 | bmp_info.gamma_scale.y*0xffff); |
| 1932 | (void) WriteBlobLSBLong(image,(unsigned int) |
| 1933 | bmp_info.gamma_scale.z*0xffff); |
| 1934 | if ((image->rendering_intent != UndefinedIntent) || |
| 1935 | (profile != (StringInfo *) NULL)) |
| 1936 | { |
| 1937 | long |
| 1938 | intent; |
| 1939 | |
| 1940 | switch ((int) image->rendering_intent) |
| 1941 | { |
| 1942 | case SaturationIntent: |
| 1943 | { |
| 1944 | intent=LCS_GM_BUSINESS; |
| 1945 | break; |
| 1946 | } |
| 1947 | case RelativeIntent: |
| 1948 | { |
| 1949 | intent=LCS_GM_GRAPHICS; |
| 1950 | break; |
| 1951 | } |
| 1952 | case PerceptualIntent: |
| 1953 | { |
| 1954 | intent=LCS_GM_IMAGES; |
| 1955 | break; |
| 1956 | } |
| 1957 | case AbsoluteIntent: |
| 1958 | { |
| 1959 | intent=LCS_GM_ABS_COLORIMETRIC; |
| 1960 | break; |
| 1961 | } |
| 1962 | default: |
| 1963 | { |
| 1964 | intent=0; |
| 1965 | break; |
| 1966 | } |
| 1967 | } |
| 1968 | (void) WriteBlobLSBLong(image,(unsigned int) intent); |
| 1969 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile data */ |
| 1970 | (void) WriteBlobLSBLong(image,0x00); /* dummy profile length */ |
| 1971 | (void) WriteBlobLSBLong(image,0x00); /* reserved */ |
| 1972 | } |
| 1973 | } |
| 1974 | if (image->storage_class == PseudoClass) |
| 1975 | { |
| 1976 | unsigned char |
| 1977 | *bmp_colormap; |
| 1978 | |
| 1979 | /* |
| 1980 | Dump colormap to file. |
| 1981 | */ |
| 1982 | if (image->debug != MagickFalse) |
| 1983 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 1984 | " Colormap: %ld entries",image->colors); |
| 1985 | bmp_colormap=(unsigned char *) AcquireQuantumMemory((size_t) (1UL << |
| 1986 | bmp_info.bits_per_pixel),4*sizeof(*bmp_colormap)); |
| 1987 | if (bmp_colormap == (unsigned char *) NULL) |
| 1988 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1989 | q=bmp_colormap; |
| 1990 | for (i=0; i < (long) MagickMin((long) image->colors,(long) bmp_info.number_colors); i++) |
| 1991 | { |
| 1992 | *q++=ScaleQuantumToChar(image->colormap[i].blue); |
| 1993 | *q++=ScaleQuantumToChar(image->colormap[i].green); |
| 1994 | *q++=ScaleQuantumToChar(image->colormap[i].red); |
| 1995 | if (type > 2) |
| 1996 | *q++=(unsigned char) 0x0; |
| 1997 | } |
| 1998 | for ( ; i < (long) (1UL << bmp_info.bits_per_pixel); i++) |
| 1999 | { |
| 2000 | *q++=(unsigned char) 0x00; |
| 2001 | *q++=(unsigned char) 0x00; |
| 2002 | *q++=(unsigned char) 0x00; |
| 2003 | if (type > 2) |
| 2004 | *q++=(unsigned char) 0x00; |
| 2005 | } |
| 2006 | if (type <= 2) |
| 2007 | (void) WriteBlob(image,(size_t) (3*(1L << bmp_info.bits_per_pixel)), |
| 2008 | bmp_colormap); |
| 2009 | else |
| 2010 | (void) WriteBlob(image,(size_t) (4*(1L << bmp_info.bits_per_pixel)), |
| 2011 | bmp_colormap); |
| 2012 | bmp_colormap=(unsigned char *) RelinquishMagickMemory(bmp_colormap); |
| 2013 | } |
| 2014 | if (image->debug != MagickFalse) |
| 2015 | (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| 2016 | " Pixels: %u bytes",bmp_info.image_size); |
| 2017 | (void) WriteBlob(image,(size_t) bmp_info.image_size,pixels); |
| 2018 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 2019 | if (GetNextImageInList(image) == (Image *) NULL) |
| 2020 | break; |
| 2021 | image=SyncNextImageInList(image); |
| 2022 | status=SetImageProgress(image,SaveImagesTag,scene++, |
| 2023 | GetImageListLength(image)); |
| 2024 | if (status == MagickFalse) |
| 2025 | break; |
| 2026 | } while (image_info->adjoin != MagickFalse); |
| 2027 | (void) CloseBlob(image); |
| 2028 | return(MagickTrue); |
| 2029 | } |