cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % PPPP CCCC L % |
| 7 | % P P C L % |
| 8 | % PPPP C L % |
| 9 | % P C L % |
| 10 | % P CCCC LLLLL % |
| 11 | % % |
| 12 | % % |
| 13 | % Read/Write HP PCL Printer Format % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % July 1992 % |
| 18 | % % |
| 19 | % % |
| 20 | % Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization % |
| 21 | % dedicated to making software imaging solutions freely available. % |
| 22 | % % |
| 23 | % You may not use this file except in compliance with the License. You may % |
| 24 | % obtain a copy of the License at % |
| 25 | % % |
| 26 | % http://www.imagemagick.org/script/license.php % |
| 27 | % % |
| 28 | % Unless required by applicable law or agreed to in writing, software % |
| 29 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 30 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 31 | % See the License for the specific language governing permissions and % |
| 32 | % limitations under the License. % |
| 33 | % % |
| 34 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 35 | % |
| 36 | % |
| 37 | */ |
| 38 | |
| 39 | /* |
| 40 | Include declarations. |
| 41 | */ |
| 42 | #include "magick/studio.h" |
| 43 | #include "magick/property.h" |
| 44 | #include "magick/blob.h" |
| 45 | #include "magick/blob-private.h" |
| 46 | #include "magick/cache.h" |
| 47 | #include "magick/color.h" |
| 48 | #include "magick/color-private.h" |
| 49 | #include "magick/colorspace.h" |
| 50 | #include "magick/constitute.h" |
| 51 | #include "magick/delegate.h" |
| 52 | #include "magick/draw.h" |
| 53 | #include "magick/exception.h" |
| 54 | #include "magick/exception-private.h" |
| 55 | #include "magick/geometry.h" |
| 56 | #include "magick/image.h" |
| 57 | #include "magick/image-private.h" |
| 58 | #include "magick/list.h" |
| 59 | #include "magick/magick.h" |
| 60 | #include "magick/memory_.h" |
| 61 | #include "magick/monitor.h" |
| 62 | #include "magick/monitor-private.h" |
| 63 | #include "magick/profile.h" |
| 64 | #include "magick/resource_.h" |
| 65 | #include "magick/quantum-private.h" |
| 66 | #include "magick/static.h" |
| 67 | #include "magick/string_.h" |
| 68 | #include "magick/module.h" |
| 69 | #include "magick/token.h" |
| 70 | #include "magick/transform.h" |
| 71 | #include "magick/utility.h" |
| 72 | |
| 73 | /* |
| 74 | Forward declarations. |
| 75 | */ |
| 76 | static MagickBooleanType |
| 77 | WritePCLImage(const ImageInfo *,Image *); |
| 78 | |
| 79 | /* |
| 80 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 81 | % % |
| 82 | % % |
| 83 | % % |
| 84 | % I s P C L % |
| 85 | % % |
| 86 | % % |
| 87 | % % |
| 88 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 89 | % |
| 90 | % IsPCL() returns MagickTrue if the image format type, identified by the |
| 91 | % magick string, is PCL. |
| 92 | % |
| 93 | % The format of the IsPCL method is: |
| 94 | % |
| 95 | % MagickBooleanType IsPCL(const unsigned char *magick,const size_t length) |
| 96 | % |
| 97 | % A description of each parameter follows: |
| 98 | % |
| 99 | % o magick: compare image format pattern against these bytes. |
| 100 | % |
| 101 | % o length: Specifies the length of the magick string. |
| 102 | % |
| 103 | */ |
| 104 | static MagickBooleanType IsPCL(const unsigned char *magick,const size_t length) |
| 105 | { |
| 106 | if (length < 4) |
| 107 | return(MagickFalse); |
| 108 | if (memcmp(magick,"\033E\033",3) == 0) |
| 109 | return(MagickTrue); |
| 110 | if (memcmp(magick,"\033E\033&",4) == 0) |
| 111 | return(MagickFalse); |
| 112 | return(MagickFalse); |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 117 | % % |
| 118 | % % |
| 119 | % % |
| 120 | % R e a d P C L I m a g e % |
| 121 | % % |
| 122 | % % |
| 123 | % % |
| 124 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 125 | % |
| 126 | % ReadPCLImage() reads a Printer Control Language image file and returns it. |
| 127 | % It allocates the memory necessary for the new Image structure and returns a |
| 128 | % pointer to the new image. |
| 129 | % |
| 130 | % The format of the ReadPCLImage method is: |
| 131 | % |
| 132 | % Image *ReadPCLImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 133 | % |
| 134 | % A description of each parameter follows: |
| 135 | % |
| 136 | % o image_info: the image info. |
| 137 | % |
| 138 | % o exception: return any errors or warnings in this structure. |
| 139 | % |
| 140 | */ |
| 141 | static Image *ReadPCLImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 142 | { |
| 143 | #define CropBox "CropBox" |
| 144 | #define DeviceCMYK "DeviceCMYK" |
| 145 | #define MediaBox "MediaBox" |
| 146 | #define RenderPCLText " Rendering PCL... " |
| 147 | |
| 148 | char |
| 149 | command[MaxTextExtent], |
| 150 | density[MaxTextExtent], |
| 151 | filename[MaxTextExtent], |
| 152 | geometry[MaxTextExtent], |
| 153 | options[MaxTextExtent], |
| 154 | input_filename[MaxTextExtent]; |
| 155 | |
| 156 | const DelegateInfo |
| 157 | *delegate_info; |
| 158 | |
| 159 | Image |
| 160 | *image, |
| 161 | *next_image; |
| 162 | |
| 163 | ImageInfo |
| 164 | *read_info; |
| 165 | |
| 166 | MagickBooleanType |
| 167 | cmyk, |
| 168 | status; |
| 169 | |
| 170 | PointInfo |
| 171 | delta; |
| 172 | |
| 173 | RectangleInfo |
| 174 | bounding_box, |
| 175 | page; |
| 176 | |
| 177 | register char |
| 178 | *p; |
| 179 | |
| 180 | register long |
| 181 | c; |
| 182 | |
| 183 | SegmentInfo |
| 184 | bounds; |
| 185 | |
| 186 | ssize_t |
| 187 | count; |
| 188 | |
| 189 | unsigned long |
| 190 | height, |
| 191 | width; |
| 192 | |
| 193 | assert(image_info != (const ImageInfo *) NULL); |
| 194 | assert(image_info->signature == MagickSignature); |
| 195 | if (image_info->debug != MagickFalse) |
| 196 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 197 | image_info->filename); |
| 198 | assert(exception != (ExceptionInfo *) NULL); |
| 199 | assert(exception->signature == MagickSignature); |
| 200 | /* |
| 201 | Open image file. |
| 202 | */ |
| 203 | image=AcquireImage(image_info); |
| 204 | status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| 205 | if (status == MagickFalse) |
| 206 | { |
| 207 | image=DestroyImageList(image); |
| 208 | return((Image *) NULL); |
| 209 | } |
| 210 | status=AcquireUniqueSymbolicLink(image_info->filename,input_filename); |
| 211 | if (status == MagickFalse) |
| 212 | { |
| 213 | ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile", |
| 214 | image_info->filename); |
| 215 | image=DestroyImageList(image); |
| 216 | return((Image *) NULL); |
| 217 | } |
| 218 | /* |
| 219 | Set the page density. |
| 220 | */ |
| 221 | delta.x=DefaultResolution; |
| 222 | delta.y=DefaultResolution; |
| 223 | if ((image->x_resolution == 0.0) || (image->y_resolution == 0.0)) |
| 224 | { |
| 225 | GeometryInfo |
| 226 | geometry_info; |
| 227 | |
| 228 | MagickStatusType |
| 229 | flags; |
| 230 | |
| 231 | flags=ParseGeometry(PSDensityGeometry,&geometry_info); |
| 232 | image->x_resolution=geometry_info.rho; |
| 233 | image->y_resolution=geometry_info.sigma; |
| 234 | if ((flags & SigmaValue) == 0) |
| 235 | image->y_resolution=image->x_resolution; |
| 236 | } |
| 237 | /* |
| 238 | Determine page geometry from the PCL media box. |
| 239 | */ |
| 240 | cmyk=image->colorspace == CMYKColorspace ? MagickTrue : MagickFalse; |
| 241 | count=0; |
| 242 | (void) ResetMagickMemory(&bounding_box,0,sizeof(bounding_box)); |
| 243 | (void) ResetMagickMemory(&bounds,0,sizeof(bounds)); |
| 244 | (void) ResetMagickMemory(&page,0,sizeof(page)); |
| 245 | (void) ResetMagickMemory(command,0,sizeof(command)); |
| 246 | p=command; |
| 247 | for (c=ReadBlobByte(image); c != EOF; c=ReadBlobByte(image)) |
| 248 | { |
| 249 | if (image_info->page != (char *) NULL) |
| 250 | continue; |
| 251 | /* |
| 252 | Note PCL elements. |
| 253 | */ |
| 254 | *p++=(char) c; |
| 255 | if ((c != (int) '/') && (c != '\n') && |
| 256 | ((size_t) (p-command) < (MaxTextExtent-1))) |
| 257 | continue; |
| 258 | *p='\0'; |
| 259 | p=command; |
| 260 | /* |
| 261 | Is this a CMYK document? |
| 262 | */ |
| 263 | if (LocaleNCompare(DeviceCMYK,command,strlen(DeviceCMYK)) == 0) |
| 264 | cmyk=MagickTrue; |
| 265 | if (LocaleNCompare(CropBox,command,strlen(CropBox)) == 0) |
| 266 | { |
| 267 | /* |
| 268 | Note region defined by crop box. |
| 269 | */ |
| 270 | count=(ssize_t) sscanf(command,"CropBox [%lf %lf %lf %lf", |
| 271 | &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2); |
| 272 | if (count != 4) |
| 273 | count=(ssize_t) sscanf(command,"CropBox[%lf %lf %lf %lf", |
| 274 | &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2); |
| 275 | } |
| 276 | if (LocaleNCompare(MediaBox,command,strlen(MediaBox)) == 0) |
| 277 | { |
| 278 | /* |
| 279 | Note region defined by media box. |
| 280 | */ |
| 281 | count=(ssize_t) sscanf(command,"MediaBox [%lf %lf %lf %lf", |
| 282 | &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2); |
| 283 | if (count != 4) |
| 284 | count=(ssize_t) sscanf(command,"MediaBox[%lf %lf %lf %lf", |
| 285 | &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2); |
| 286 | } |
| 287 | if (count != 4) |
| 288 | continue; |
| 289 | /* |
| 290 | Set PCL render geometry. |
| 291 | */ |
| 292 | width=(unsigned long) (bounds.x2-bounds.x1+0.5); |
| 293 | height=(unsigned long) (bounds.y2-bounds.y1+0.5); |
| 294 | if (width > page.width) |
| 295 | page.width=width; |
| 296 | if (height > page.height) |
| 297 | page.height=height; |
| 298 | } |
| 299 | (void) CloseBlob(image); |
| 300 | /* |
| 301 | Render PCL with the GhostPCL delegate. |
| 302 | */ |
| 303 | if ((page.width == 0) || (page.height == 0)) |
| 304 | (void) ParseAbsoluteGeometry(PSPageGeometry,&page); |
| 305 | if (image_info->page != (char *) NULL) |
| 306 | (void) ParseAbsoluteGeometry(image_info->page,&page); |
| 307 | (void) FormatMagickString(geometry,MaxTextExtent,"%lux%lu", |
| 308 | page.width,page.height); |
| 309 | if (image_info->monochrome != MagickFalse) |
| 310 | delegate_info=GetDelegateInfo("pcl:mono",(char *) NULL,exception); |
| 311 | else |
| 312 | if (cmyk != MagickFalse) |
| 313 | delegate_info=GetDelegateInfo("pcl:cmyk",(char *) NULL,exception); |
| 314 | else |
| 315 | delegate_info=GetDelegateInfo("pcl:color",(char *) NULL,exception); |
| 316 | if (delegate_info == (const DelegateInfo *) NULL) |
| 317 | return((Image *) NULL); |
| 318 | *options='\0'; |
| 319 | if ((page.width == 0) || (page.height == 0)) |
| 320 | (void) ParseAbsoluteGeometry(PSPageGeometry,&page); |
| 321 | if (image_info->page != (char *) NULL) |
| 322 | (void) ParseAbsoluteGeometry(image_info->page,&page); |
| 323 | (void) FormatMagickString(density,MaxTextExtent,"%gx%g", |
| 324 | image->x_resolution,image->y_resolution); |
| 325 | page.width=(unsigned long) (page.width*image->x_resolution/delta.x+0.5); |
| 326 | page.height=(unsigned long) (page.height*image->y_resolution/delta.y+0.5); |
| 327 | (void) FormatMagickString(options,MaxTextExtent,"-g%lux%lu ", |
| 328 | page.width,page.height); |
| 329 | image=DestroyImage(image); |
| 330 | read_info=CloneImageInfo(image_info); |
| 331 | *read_info->magick='\0'; |
| 332 | if (read_info->number_scenes != 0) |
| 333 | { |
| 334 | if (read_info->number_scenes != 1) |
| 335 | (void) FormatMagickString(options,MaxTextExtent,"-dLastPage=%lu", |
| 336 | read_info->scene+read_info->number_scenes); |
| 337 | else |
| 338 | (void) FormatMagickString(options,MaxTextExtent, |
| 339 | "-dFirstPage=%lu -dLastPage=%lu",read_info->scene+1,read_info->scene+ |
| 340 | read_info->number_scenes); |
| 341 | read_info->number_scenes=0; |
| 342 | if (read_info->scenes != (char *) NULL) |
| 343 | *read_info->scenes='\0'; |
| 344 | } |
| 345 | if (read_info->authenticate != (char *) NULL) |
| 346 | (void) FormatMagickString(options+strlen(options),MaxTextExtent, |
| 347 | " -sPCLPassword=%s",read_info->authenticate); |
| 348 | (void) CopyMagickString(filename,read_info->filename,MaxTextExtent); |
| 349 | (void) AcquireUniqueFilename(read_info->filename); |
| 350 | (void) FormatMagickString(command,MaxTextExtent, |
| 351 | GetDelegateCommands(delegate_info), |
| 352 | read_info->antialias != MagickFalse ? 4 : 1, |
| 353 | read_info->antialias != MagickFalse ? 4 : 1,density,options, |
| 354 | read_info->filename,input_filename); |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 355 | status=SystemCommand(read_info->verbose,command,exception) != 0 ? MagickTrue : |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 356 | MagickFalse; |
| 357 | image=ReadImage(read_info,exception); |
| 358 | (void) RelinquishUniqueFileResource(read_info->filename); |
| 359 | (void) RelinquishUniqueFileResource(input_filename); |
| 360 | read_info=DestroyImageInfo(read_info); |
| 361 | if (image == (Image *) NULL) |
| 362 | ThrowReaderException(DelegateError,"PCLDelegateFailed"); |
| 363 | if (LocaleCompare(image->magick,"BMP") == 0) |
| 364 | { |
| 365 | Image |
| 366 | *cmyk_image; |
| 367 | |
| 368 | cmyk_image=ConsolidateCMYKImages(image,&image->exception); |
| 369 | if (cmyk_image != (Image *) NULL) |
| 370 | { |
| 371 | image=DestroyImageList(image); |
| 372 | image=cmyk_image; |
| 373 | } |
| 374 | } |
| 375 | do |
| 376 | { |
| 377 | (void) CopyMagickString(image->filename,filename,MaxTextExtent); |
| 378 | image->page=page; |
| 379 | next_image=SyncNextImageInList(image); |
| 380 | if (next_image != (Image *) NULL) |
| 381 | image=next_image; |
| 382 | } while (next_image != (Image *) NULL); |
| 383 | return(GetFirstImageInList(image)); |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 388 | % % |
| 389 | % % |
| 390 | % % |
| 391 | % R e g i s t e r P C L I m a g e % |
| 392 | % % |
| 393 | % % |
| 394 | % % |
| 395 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 396 | % |
| 397 | % RegisterPCLImage() adds attributes for the PCL image format to |
| 398 | % the list of supported formats. The attributes include the image format |
| 399 | % tag, a method to read and/or write the format, whether the format |
| 400 | % supports the saving of more than one frame to the i file or blob, |
| 401 | % whether the format supports native in-memory I/O, and a brief |
| 402 | % description of the format. |
| 403 | % |
| 404 | % The format of the RegisterPCLImage method is: |
| 405 | % |
| 406 | % unsigned long RegisterPCLImage(void) |
| 407 | % |
| 408 | */ |
| 409 | ModuleExport unsigned long RegisterPCLImage(void) |
| 410 | { |
| 411 | MagickInfo |
| 412 | *entry; |
| 413 | |
| 414 | entry=SetMagickInfo("PCL"); |
| 415 | entry->decoder=(DecodeImageHandler *) ReadPCLImage; |
| 416 | entry->encoder=(EncodeImageHandler *) WritePCLImage; |
| 417 | entry->magick=(IsImageFormatHandler *) IsPCL; |
| 418 | entry->blob_support=MagickFalse; |
| 419 | entry->seekable_stream=MagickTrue; |
| 420 | entry->thread_support=EncoderThreadSupport; |
| 421 | entry->description=ConstantString("Printer Control Language"); |
| 422 | entry->module=ConstantString("PCL"); |
| 423 | (void) RegisterMagickInfo(entry); |
| 424 | return(MagickImageCoderSignature); |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 429 | % % |
| 430 | % % |
| 431 | % % |
| 432 | % U n r e g i s t e r P C L I m a g e % |
| 433 | % % |
| 434 | % % |
| 435 | % % |
| 436 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 437 | % |
| 438 | % UnregisterPCLImage() removes format registrations made by the PCL module |
| 439 | % from the list of supported formats. |
| 440 | % |
| 441 | % The format of the UnregisterPCLImage method is: |
| 442 | % |
| 443 | % UnregisterPCLImage(void) |
| 444 | % |
| 445 | */ |
| 446 | ModuleExport void UnregisterPCLImage(void) |
| 447 | { |
| 448 | (void) UnregisterMagickInfo("PCL"); |
| 449 | } |
| 450 | |
| 451 | /* |
| 452 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 453 | % % |
| 454 | % % |
| 455 | % % |
| 456 | % W r i t e P C L I m a g e % |
| 457 | % % |
| 458 | % % |
| 459 | % % |
| 460 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 461 | % |
| 462 | % WritePCLImage() writes an image in the Page Control Language encoded |
| 463 | % image format. |
| 464 | % |
| 465 | % The format of the WritePCLImage method is: |
| 466 | % |
| 467 | % MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image) |
| 468 | % |
| 469 | % A description of each parameter follows. |
| 470 | % |
| 471 | % o image_info: the image info. |
| 472 | % |
| 473 | % o image: The image. |
| 474 | % |
| 475 | */ |
| 476 | |
| 477 | static size_t PCLDeltaCompressImage(const size_t length, |
| 478 | const unsigned char *previous_pixels,const unsigned char *pixels, |
| 479 | unsigned char *compress_pixels) |
| 480 | { |
| 481 | int |
| 482 | delta, |
| 483 | j, |
| 484 | replacement; |
| 485 | |
| 486 | register long |
| 487 | i, |
| 488 | x; |
| 489 | |
| 490 | register unsigned char |
| 491 | *q; |
| 492 | |
| 493 | q=compress_pixels; |
| 494 | for (x=0; x < (long) length; ) |
| 495 | { |
| 496 | j=0; |
| 497 | for (i=0; x < (long) length; x++) |
| 498 | { |
| 499 | if (*pixels++ != *previous_pixels++) |
| 500 | { |
| 501 | i=1; |
| 502 | break; |
| 503 | } |
| 504 | j++; |
| 505 | } |
| 506 | for ( ; x < (long) length; x++) |
| 507 | { |
| 508 | if (*pixels == *previous_pixels) |
| 509 | break; |
| 510 | i++; |
| 511 | previous_pixels++; |
| 512 | pixels++; |
| 513 | } |
| 514 | if (i == 0) |
| 515 | break; |
| 516 | replacement=j >= 31 ? 31 : j; |
| 517 | j-=replacement; |
| 518 | delta=i >= 8 ? 8 : i; |
| 519 | *q++=(unsigned char) (((delta-1) << 5) | replacement); |
| 520 | if (replacement == 31) |
| 521 | { |
| 522 | for (replacement=255; j != 0; ) |
| 523 | { |
| 524 | if (replacement > j) |
| 525 | replacement=j; |
| 526 | *q++=(unsigned char) replacement; |
| 527 | j-=replacement; |
| 528 | } |
| 529 | if (replacement == 255) |
| 530 | *q++='\0'; |
| 531 | } |
| 532 | for (pixels-=i; i != 0; ) |
| 533 | { |
| 534 | for (i-=delta; delta != 0; delta--) |
| 535 | *q++=(*pixels++); |
| 536 | if (i == 0) |
| 537 | break; |
| 538 | delta=i; |
| 539 | if (i >= 8) |
| 540 | delta=8; |
| 541 | *q++=(unsigned char) ((delta-1) << 5); |
| 542 | } |
| 543 | } |
| 544 | return((size_t) (q-compress_pixels)); |
| 545 | } |
| 546 | |
| 547 | static size_t PCLPackbitsCompressImage(const size_t length, |
| 548 | const unsigned char *pixels,unsigned char *compress_pixels) |
| 549 | { |
| 550 | int |
| 551 | count; |
| 552 | |
| 553 | long |
| 554 | j; |
| 555 | |
| 556 | register long |
| 557 | x; |
| 558 | |
| 559 | register unsigned char |
| 560 | *q; |
| 561 | |
| 562 | unsigned char |
| 563 | packbits[128]; |
| 564 | |
| 565 | /* |
| 566 | Compress pixels with Packbits encoding. |
| 567 | */ |
| 568 | q=compress_pixels; |
| 569 | for (x=(long) length; x != 0; ) |
| 570 | { |
| 571 | switch (x) |
| 572 | { |
| 573 | case 1: |
| 574 | { |
| 575 | x--; |
| 576 | *q++=0; |
| 577 | *q++=(*pixels); |
| 578 | break; |
| 579 | } |
| 580 | case 2: |
| 581 | { |
| 582 | x-=2; |
| 583 | *q++=1; |
| 584 | *q++=(*pixels); |
| 585 | *q++=pixels[1]; |
| 586 | break; |
| 587 | } |
| 588 | case 3: |
| 589 | { |
| 590 | x-=3; |
| 591 | if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2))) |
| 592 | { |
| 593 | *q++=(unsigned char) ((256-3)+1); |
| 594 | *q++=(*pixels); |
| 595 | break; |
| 596 | } |
| 597 | *q++=2; |
| 598 | *q++=(*pixels); |
| 599 | *q++=pixels[1]; |
| 600 | *q++=pixels[2]; |
| 601 | break; |
| 602 | } |
| 603 | default: |
| 604 | { |
| 605 | if ((*pixels == *(pixels+1)) && (*(pixels+1) == *(pixels+2))) |
| 606 | { |
| 607 | /* |
| 608 | Packed run. |
| 609 | */ |
| 610 | count=3; |
| 611 | while (((long) count < x) && (*pixels == *(pixels+count))) |
| 612 | { |
| 613 | count++; |
| 614 | if (count >= 127) |
| 615 | break; |
| 616 | } |
| 617 | x-=count; |
| 618 | *q++=(unsigned char) ((256-count)+1); |
| 619 | *q++=(*pixels); |
| 620 | pixels+=count; |
| 621 | break; |
| 622 | } |
| 623 | /* |
| 624 | Literal run. |
| 625 | */ |
| 626 | count=0; |
| 627 | while ((*(pixels+count) != *(pixels+count+1)) || |
| 628 | (*(pixels+count+1) != *(pixels+count+2))) |
| 629 | { |
| 630 | packbits[count+1]=pixels[count]; |
| 631 | count++; |
| 632 | if (((long) count >= (x-3)) || (count >= 127)) |
| 633 | break; |
| 634 | } |
| 635 | x-=count; |
| 636 | *packbits=(unsigned char) (count-1); |
| 637 | for (j=0; j <= (long) count; j++) |
| 638 | *q++=packbits[j]; |
| 639 | pixels+=count; |
| 640 | break; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | *q++=128; /* EOD marker */ |
| 645 | return((size_t) (q-compress_pixels)); |
| 646 | } |
| 647 | |
| 648 | static MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image) |
| 649 | { |
| 650 | char |
| 651 | buffer[MaxTextExtent]; |
| 652 | |
| 653 | long |
| 654 | y; |
| 655 | |
| 656 | MagickBooleanType |
| 657 | status; |
| 658 | |
| 659 | MagickOffsetType |
| 660 | scene; |
| 661 | |
| 662 | register const IndexPacket |
| 663 | *indexes; |
| 664 | |
| 665 | register const PixelPacket |
| 666 | *p; |
| 667 | |
| 668 | register long |
| 669 | i, |
| 670 | x; |
| 671 | |
| 672 | register unsigned char |
| 673 | *q; |
| 674 | |
| 675 | size_t |
| 676 | length, |
| 677 | packets; |
| 678 | |
| 679 | unsigned char |
| 680 | bits_per_pixel, |
| 681 | *compress_pixels, |
| 682 | *pixels, |
| 683 | *previous_pixels; |
| 684 | |
| 685 | unsigned long |
| 686 | density; |
| 687 | |
| 688 | /* |
| 689 | Open output image file. |
| 690 | */ |
| 691 | assert(image_info != (const ImageInfo *) NULL); |
| 692 | assert(image_info->signature == MagickSignature); |
| 693 | assert(image != (Image *) NULL); |
| 694 | assert(image->signature == MagickSignature); |
| 695 | if (image->debug != MagickFalse) |
| 696 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 697 | status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); |
| 698 | if (status == MagickFalse) |
| 699 | return(status); |
| 700 | density=75; |
| 701 | if (image_info->density != (char *) NULL) |
| 702 | { |
| 703 | GeometryInfo |
| 704 | geometry; |
| 705 | |
| 706 | (void) ParseGeometry(image_info->density,&geometry); |
| 707 | density=(unsigned long) geometry.rho; |
| 708 | } |
| 709 | scene=0; |
| 710 | do |
| 711 | { |
| 712 | if (image->colorspace != RGBColorspace) |
| 713 | (void) TransformImageColorspace(image,RGBColorspace); |
| 714 | /* |
| 715 | Initialize the printer. |
| 716 | */ |
| 717 | (void) WriteBlobString(image,"\033E"); /* printer reset */ |
| 718 | (void) WriteBlobString(image,"\033*r3F"); /* set presentation mode */ |
| 719 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*r%lus%luT", |
| 720 | image->columns,image->rows); |
| 721 | (void) WriteBlobString(image,buffer); |
| 722 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*t%ldR",density); |
| 723 | (void) WriteBlobString(image,buffer); |
| 724 | (void) WriteBlobString(image,"\033&l0E"); /* top margin 0 */ |
| 725 | if (IsMonochromeImage(image,&image->exception) != MagickFalse) |
| 726 | { |
| 727 | /* |
| 728 | Monochrome image. |
| 729 | */ |
| 730 | bits_per_pixel=1; |
| 731 | (void) WriteBlobString(image,"\033*v6W"); /* set color mode... */ |
| 732 | (void) WriteBlobByte(image,0); /* RGB */ |
| 733 | (void) WriteBlobByte(image,1); /* indexed by pixel */ |
| 734 | (void) WriteBlobByte(image,bits_per_pixel); /* bits per index */ |
| 735 | (void) WriteBlobByte(image,8); /* bits per red component */ |
| 736 | (void) WriteBlobByte(image,8); /* bits per green component */ |
| 737 | (void) WriteBlobByte(image,8); /* bits per blue component */ |
| 738 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*v0a0b0c0I"); |
| 739 | (void) WriteBlobString(image,buffer); |
| 740 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*v1a1b1c1I"); |
| 741 | (void) WriteBlobString(image,buffer); |
| 742 | } |
| 743 | else |
| 744 | if (image->storage_class == DirectClass) |
| 745 | { |
| 746 | /* |
| 747 | DirectClass image. |
| 748 | */ |
| 749 | bits_per_pixel=24; |
| 750 | (void) WriteBlobString(image,"\033*v6W"); /* set color mode */ |
| 751 | (void) WriteBlobByte(image,0); /* RGB */ |
| 752 | (void) WriteBlobByte(image,3); /* direct by pixel */ |
| 753 | (void) WriteBlobByte(image,0); /* bits per index (ignored) */ |
| 754 | (void) WriteBlobByte(image,8); /* bits per red component */ |
| 755 | (void) WriteBlobByte(image,8); /* bits per green component */ |
| 756 | (void) WriteBlobByte(image,8); /* bits per blue component */ |
| 757 | } |
| 758 | else |
| 759 | { |
| 760 | /* |
| 761 | Colormapped image. |
| 762 | */ |
| 763 | bits_per_pixel=8; |
| 764 | (void) WriteBlobString(image,"\033*v6W"); /* set color mode... */ |
| 765 | (void) WriteBlobByte(image,0); /* RGB */ |
| 766 | (void) WriteBlobByte(image,1); /* indexed by pixel */ |
| 767 | (void) WriteBlobByte(image,bits_per_pixel); /* bits per index */ |
| 768 | (void) WriteBlobByte(image,8); /* bits per red component */ |
| 769 | (void) WriteBlobByte(image,8); /* bits per green component */ |
| 770 | (void) WriteBlobByte(image,8); /* bits per blue component */ |
| 771 | for (i=0; i < (long) image->colors; i++) |
| 772 | { |
| 773 | (void) FormatMagickString(buffer,MaxTextExtent, |
| 774 | "\033*v%da%db%dc%ldI",ScaleQuantumToChar(image->colormap[i].red), |
| 775 | ScaleQuantumToChar(image->colormap[i].green), |
| 776 | ScaleQuantumToChar(image->colormap[i].blue),i); |
| 777 | (void) WriteBlobString(image,buffer); |
| 778 | } |
| 779 | for ( ; i < (1L << bits_per_pixel); i++) |
| 780 | { |
| 781 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*v%luI",i); |
| 782 | (void) WriteBlobString(image,buffer); |
| 783 | } |
| 784 | } |
| 785 | (void) WriteBlobString(image,"\033*r1A"); /* start raster graphics */ |
| 786 | (void) WriteBlobString(image,"\033*b0Y"); /* set y offset */ |
| 787 | length=(image->columns*bits_per_pixel+7)/8; |
| 788 | pixels=(unsigned char *) AcquireQuantumMemory(length,sizeof(*pixels)); |
| 789 | if (pixels == (unsigned char *) NULL) |
| 790 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 791 | compress_pixels=(unsigned char *) NULL; |
| 792 | previous_pixels=(unsigned char *) NULL; |
| 793 | switch (image->compression) |
| 794 | { |
| 795 | case NoCompression: |
| 796 | { |
| 797 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b0M"); |
| 798 | (void) WriteBlobString(image,buffer); |
| 799 | break; |
| 800 | } |
| 801 | case RLECompression: |
| 802 | { |
| 803 | compress_pixels=(unsigned char *) AcquireQuantumMemory(length+256, |
| 804 | sizeof(*compress_pixels)); |
| 805 | if (compress_pixels == (unsigned char *) NULL) |
| 806 | { |
| 807 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 808 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 809 | } |
| 810 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b2M"); |
| 811 | (void) WriteBlobString(image,buffer); |
| 812 | break; |
| 813 | } |
| 814 | default: |
| 815 | { |
| 816 | compress_pixels=(unsigned char *) AcquireQuantumMemory(length+ |
| 817 | (length >> 3),sizeof(*compress_pixels)); |
| 818 | if (compress_pixels == (unsigned char *) NULL) |
| 819 | { |
| 820 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 821 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 822 | } |
| 823 | previous_pixels=(unsigned char *) AcquireQuantumMemory(length, |
| 824 | sizeof(*previous_pixels)); |
| 825 | if (previous_pixels == (unsigned char *) NULL) |
| 826 | { |
| 827 | compress_pixels=(unsigned char *) RelinquishMagickMemory( |
| 828 | compress_pixels); |
| 829 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 830 | ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 831 | } |
| 832 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b3M"); |
| 833 | (void) WriteBlobString(image,buffer); |
| 834 | break; |
| 835 | } |
| 836 | } |
| 837 | for (y=0; y < (long) image->rows; y++) |
| 838 | { |
| 839 | p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| 840 | if (p == (const PixelPacket *) NULL) |
| 841 | break; |
| 842 | indexes=GetAuthenticIndexQueue(image); |
| 843 | q=pixels; |
| 844 | switch (bits_per_pixel) |
| 845 | { |
| 846 | case 1: |
| 847 | { |
| 848 | register unsigned char |
| 849 | bit, |
| 850 | byte; |
| 851 | |
| 852 | /* |
| 853 | Monochrome image. |
| 854 | */ |
| 855 | bit=0; |
| 856 | byte=0; |
| 857 | for (x=0; x < (long) image->columns; x++) |
| 858 | { |
| 859 | byte<<=1; |
| 860 | if (PixelIntensity(p) >= ((MagickRealType) QuantumRange/2.0)) |
| 861 | byte|=0x01; |
| 862 | bit++; |
| 863 | if (bit == 8) |
| 864 | { |
| 865 | *q++=byte; |
| 866 | bit=0; |
| 867 | byte=0; |
| 868 | } |
| 869 | p++; |
| 870 | } |
| 871 | if (bit != 0) |
| 872 | *q++=byte << (8-bit); |
| 873 | break; |
| 874 | } |
| 875 | case 8: |
| 876 | { |
| 877 | /* |
| 878 | Colormapped image. |
| 879 | */ |
| 880 | for (x=0; x < (long) image->columns; x++) |
| 881 | *q++=(unsigned char) indexes[x]; |
| 882 | break; |
| 883 | } |
| 884 | case 24: |
| 885 | case 32: |
| 886 | { |
| 887 | /* |
| 888 | Truecolor image. |
| 889 | */ |
| 890 | for (x=0; x < (long) image->columns; x++) |
| 891 | { |
| 892 | *q++=ScaleQuantumToChar(p->red); |
| 893 | *q++=ScaleQuantumToChar(p->green); |
| 894 | *q++=ScaleQuantumToChar(p->blue); |
| 895 | p++; |
| 896 | } |
| 897 | break; |
| 898 | } |
| 899 | } |
| 900 | switch (image->compression) |
| 901 | { |
| 902 | case NoCompression: |
| 903 | { |
| 904 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b%luW", |
| 905 | (unsigned long) length); |
| 906 | (void) WriteBlobString(image,buffer); |
| 907 | (void) WriteBlob(image,length,pixels); |
| 908 | break; |
| 909 | } |
| 910 | case RLECompression: |
| 911 | { |
| 912 | packets=PCLPackbitsCompressImage(length,pixels, |
| 913 | compress_pixels); |
| 914 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b%luW", |
| 915 | (unsigned long) packets); |
| 916 | (void) WriteBlobString(image,buffer); |
| 917 | (void) WriteBlob(image,packets,compress_pixels); |
| 918 | break; |
| 919 | } |
| 920 | default: |
| 921 | { |
| 922 | if (y == 0) |
| 923 | for (i=0; i < (long) length; i++) |
| 924 | previous_pixels[i]=(~pixels[i]); |
| 925 | packets=PCLDeltaCompressImage(length,previous_pixels,pixels, |
| 926 | compress_pixels); |
| 927 | (void) FormatMagickString(buffer,MaxTextExtent,"\033*b%luW", |
| 928 | (unsigned long) packets); |
| 929 | (void) WriteBlobString(image,buffer); |
| 930 | (void) WriteBlob(image,packets,compress_pixels); |
| 931 | (void) CopyMagickMemory(previous_pixels,pixels,length* |
| 932 | sizeof(*pixels)); |
| 933 | break; |
| 934 | } |
| 935 | } |
| 936 | } |
cristy | 8bc68ee | 2009-09-24 18:39:29 +0000 | [diff] [blame^] | 937 | (void) WriteBlobString(image,"\033*rB"); /* end graphics */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 938 | switch (image->compression) |
| 939 | { |
| 940 | case NoCompression: |
| 941 | break; |
| 942 | case RLECompression: |
| 943 | { |
| 944 | compress_pixels=(unsigned char *) RelinquishMagickMemory( |
| 945 | compress_pixels); |
| 946 | break; |
| 947 | } |
| 948 | default: |
| 949 | { |
| 950 | previous_pixels=(unsigned char *) RelinquishMagickMemory( |
| 951 | previous_pixels); |
| 952 | compress_pixels=(unsigned char *) RelinquishMagickMemory( |
| 953 | compress_pixels); |
| 954 | break; |
| 955 | } |
| 956 | } |
| 957 | pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| 958 | if (GetNextImageInList(image) == (Image *) NULL) |
| 959 | break; |
| 960 | image=SyncNextImageInList(image); |
| 961 | status=SetImageProgress(image,SaveImagesTag,scene++, |
| 962 | GetImageListLength(image)); |
| 963 | if (status == MagickFalse) |
| 964 | break; |
| 965 | } while (image_info->adjoin != MagickFalse); |
| 966 | (void) WriteBlobString(image,"\033E"); |
| 967 | (void) CloseBlob(image); |
| 968 | return(MagickTrue); |
| 969 | } |