granicus.if.org Git - imagemagick/blob - coders/jbig.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                        JJJJJ  BBBB   IIIII   GGGG                           %
   7 %                          J    B   B    I    G                               %
   8 %                          J    BBBB     I    G  GG                           %
   9 %                        J J    B   B    I    G   G                           %
  10 %                        JJJ    BBBB   IIIII   GGG                            %
  11 %                                                                             %
  12 %                                                                             %
  13 %                       Read/Write JBIG Image Format                          %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2013 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 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/attribute.h"
  44 #include "MagickCore/blob.h"
  45 #include "MagickCore/blob-private.h"
  46 #include "MagickCore/cache.h"
  47 #include "MagickCore/color-private.h"
  48 #include "MagickCore/colormap.h"
  49 #include "MagickCore/colorspace.h"
  50 #include "MagickCore/colorspace-private.h"
  51 #include "MagickCore/constitute.h"
  52 #include "MagickCore/exception.h"
  53 #include "MagickCore/exception-private.h"
  54 #include "MagickCore/geometry.h"
  55 #include "MagickCore/image.h"
  56 #include "MagickCore/image-private.h"
  57 #include "MagickCore/list.h"
  58 #include "MagickCore/magick.h"
  59 #include "MagickCore/memory_.h"
  60 #include "MagickCore/monitor.h"
  61 #include "MagickCore/monitor-private.h"
  62 #include "MagickCore/nt-base-private.h"
  63 #include "MagickCore/pixel-accessor.h"
  64 #include "MagickCore/quantum-private.h"
  65 #include "MagickCore/static.h"
  66 #include "MagickCore/string_.h"
  67 #include "MagickCore/string-private.h"
  68 #include "MagickCore/module.h"
  69 #if defined(MAGICKCORE_JBIG_DELEGATE)
  70 #include "jbig.h"
  71 #endif
  72 \f
  73 /*
  74   Forward declarations.
  75 */
  76 #if defined(MAGICKCORE_JBIG_DELEGATE)
  77 static MagickBooleanType
  78   WriteJBIGImage(const ImageInfo *,Image *,ExceptionInfo *);
  79 #endif
  80 \f
  81 #if defined(MAGICKCORE_JBIG_DELEGATE)
  82 /*
  83 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  84 %                                                                             %
  85 %                                                                             %
  86 %                                                                             %
  87 %   R e a d J B I G I m a g e                                                 %
  88 %                                                                             %
  89 %                                                                             %
  90 %                                                                             %
  91 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  92 %
  93 %  ReadJBIGImage() reads a JBIG image file and returns it.  It
  94 %  allocates the memory necessary for the new Image structure and returns a
  95 %  pointer to the new image.
  96 %
  97 %  The format of the ReadJBIGImage method is:
  98 %
  99 %      Image *ReadJBIGImage(const ImageInfo *image_info,
 100 %        ExceptionInfo *exception)
 101 %
 102 %  A description of each parameter follows:
 103 %
 104 %    o image_info: the image info.
 105 %
 106 %    o exception: return any errors or warnings in this structure.
 107 %
 108 */
 109 static Image *ReadJBIGImage(const ImageInfo *image_info,
 110   ExceptionInfo *exception)
 111 {
 112   Image
 113     *image;
 114
 115   MagickStatusType
 116     status;
 117
 118   Quantum
 119     index;
 120
 121   register ssize_t
 122     x;
 123
 124   register Quantum
 125     *q;
 126
 127   register unsigned char
 128     *p;
 129
 130   ssize_t
 131     length,
 132     y;
 133
 134   struct jbg_dec_state
 135     jbig_info;
 136
 137   unsigned char
 138     bit,
 139     *buffer,
 140     byte;
 141
 142   /*
 143     Open image file.
 144   */
 145   assert(image_info != (const ImageInfo *) NULL);
 146   assert(image_info->signature == MagickSignature);
 147   if (image_info->debug != MagickFalse)
 148     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 149       image_info->filename);
 150   assert(exception != (ExceptionInfo *) NULL);
 151   assert(exception->signature == MagickSignature);
 152   image=AcquireImage(image_info,exception);
 153   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 154   if (status == MagickFalse)
 155     {
 156       image=DestroyImageList(image);
 157       return((Image *) NULL);
 158     }
 159   /*
 160     Initialize JBIG toolkit.
 161   */
 162   jbg_dec_init(&jbig_info);
 163   jbg_dec_maxsize(&jbig_info,(unsigned long) image->columns,(unsigned long)
 164     image->rows);
 165   image->columns=jbg_dec_getwidth(&jbig_info);
 166   image->rows=jbg_dec_getheight(&jbig_info);
 167   image->depth=8;
 168   image->storage_class=PseudoClass;
 169   image->colors=2;
 170   /*
 171     Read JBIG file.
 172   */
 173   buffer=(unsigned char *) AcquireQuantumMemory(MagickMaxBufferExtent,
 174     sizeof(*buffer));
 175   if (buffer == (unsigned char *) NULL)
 176     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 177   status=JBG_EAGAIN;
 178   do
 179   {
 180     length=(ssize_t) ReadBlob(image,MagickMaxBufferExtent,buffer);
 181     if (length == 0)
 182       break;
 183     p=buffer;
 184     while ((length > 0) && ((status == JBG_EAGAIN) || (status == JBG_EOK)))
 185     {
 186       size_t
 187         count;
 188
 189       status=jbg_dec_in(&jbig_info,p,length,&count);
 190       p+=count;
 191       length-=(ssize_t) count;
 192     }
 193   } while ((status == JBG_EAGAIN) || (status == JBG_EOK));
 194   /*
 195     Create colormap.
 196   */
 197   image->columns=jbg_dec_getwidth(&jbig_info);
 198   image->rows=jbg_dec_getheight(&jbig_info);
 199   image->compression=JBIG2Compression;
 200   if (AcquireImageColormap(image,2,exception) == MagickFalse)
 201     {
 202       buffer=(unsigned char *) RelinquishMagickMemory(buffer);
 203       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 204     }
 205   image->colormap[0].red=0;
 206   image->colormap[0].green=0;
 207   image->colormap[0].blue=0;
 208   image->colormap[1].red=QuantumRange;
 209   image->colormap[1].green=QuantumRange;
 210   image->colormap[1].blue=QuantumRange;
 211   image->resolution.x=300;
 212   image->resolution.y=300;
 213   if (image_info->ping != MagickFalse)
 214     {
 215       (void) CloseBlob(image);
 216       return(GetFirstImageInList(image));
 217     }
 218   /*
 219     Convert X bitmap image to pixel packets.
 220   */
 221   p=jbg_dec_getimage(&jbig_info,0);
 222   for (y=0; y < (ssize_t) image->rows; y++)
 223   {
 224     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 225     if (q == (Quantum *) NULL)
 226       break;
 227     bit=0;
 228     byte=0;
 229     for (x=0; x < (ssize_t) image->columns; x++)
 230     {
 231       if (bit == 0)
 232         byte=(*p++);
 233       index=(byte & 0x80) ? 0 : 1;
 234       bit++;
 235       byte<<=1;
 236       if (bit == 8)
 237         bit=0;
 238       SetPixelIndex(image,index,q);
 239       SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
 240       q+=GetPixelChannels(image);
 241     }
 242     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 243       break;
 244     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 245       image->rows);
 246     if (status == MagickFalse)
 247       break;
 248   }
 249   /*
 250     Free scale resource.
 251   */
 252   jbg_dec_free(&jbig_info);
 253   buffer=(unsigned char *) RelinquishMagickMemory(buffer);
 254   (void) CloseBlob(image);
 255   return(GetFirstImageInList(image));
 256 }
 257 #endif
 258 \f
 259 /*
 260 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 261 %                                                                             %
 262 %                                                                             %
 263 %                                                                             %
 264 %   R e g i s t e r J B I G I m a g e                                         %
 265 %                                                                             %
 266 %                                                                             %
 267 %                                                                             %
 268 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 269 %
 270 %  RegisterJBIGImage() adds attributes for the JBIG image format to
 271 %  the list of supported formats.  The attributes include the image format
 272 %  tag, a method to read and/or write the format, whether the format
 273 %  supports the saving of more than one frame to the same file or blob,
 274 %  whether the format supports native in-memory I/O, and a brief
 275 %  description of the format.
 276 %
 277 %  The format of the RegisterJBIGImage method is:
 278 %
 279 %      size_t RegisterJBIGImage(void)
 280 %
 281 */
 282 ModuleExport size_t RegisterJBIGImage(void)
 283 {
 284 #define JBIGDescription  "Joint Bi-level Image experts Group interchange format"
 285
 286   char
 287     version[MaxTextExtent];
 288
 289   MagickInfo
 290     *entry;
 291
 292   *version='\0';
 293 #if defined(JBG_VERSION)
 294   (void) CopyMagickString(version,JBG_VERSION,MaxTextExtent);
 295 #endif
 296   entry=SetMagickInfo("BIE");
 297 #if defined(MAGICKCORE_JBIG_DELEGATE)
 298   entry->decoder=(DecodeImageHandler *) ReadJBIGImage;
 299   entry->encoder=(EncodeImageHandler *) WriteJBIGImage;
 300 #endif
 301   entry->adjoin=MagickFalse;
 302   entry->description=ConstantString(JBIGDescription);
 303   if (*version != '\0')
 304     entry->version=ConstantString(version);
 305   entry->module=ConstantString("JBIG");
 306   (void) RegisterMagickInfo(entry);
 307   entry=SetMagickInfo("JBG");
 308 #if defined(MAGICKCORE_JBIG_DELEGATE)
 309   entry->decoder=(DecodeImageHandler *) ReadJBIGImage;
 310   entry->encoder=(EncodeImageHandler *) WriteJBIGImage;
 311 #endif
 312   entry->description=ConstantString(JBIGDescription);
 313   if (*version != '\0')
 314     entry->version=ConstantString(version);
 315   entry->module=ConstantString("JBIG");
 316   (void) RegisterMagickInfo(entry);
 317   entry=SetMagickInfo("JBIG");
 318 #if defined(MAGICKCORE_JBIG_DELEGATE)
 319   entry->decoder=(DecodeImageHandler *) ReadJBIGImage;
 320   entry->encoder=(EncodeImageHandler *) WriteJBIGImage;
 321 #endif
 322   entry->description=ConstantString(JBIGDescription);
 323   if (*version != '\0')
 324     entry->version=ConstantString(version);
 325   entry->module=ConstantString("JBIG");
 326   (void) RegisterMagickInfo(entry);
 327   return(MagickImageCoderSignature);
 328 }
 329 \f
 330 /*
 331 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 332 %                                                                             %
 333 %                                                                             %
 334 %                                                                             %
 335 %   U n r e g i s t e r J B I G I m a g e                                     %
 336 %                                                                             %
 337 %                                                                             %
 338 %                                                                             %
 339 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 340 %
 341 %  UnregisterJBIGImage() removes format registrations made by the
 342 %  JBIG module from the list of supported formats.
 343 %
 344 %  The format of the UnregisterJBIGImage method is:
 345 %
 346 %      UnregisterJBIGImage(void)
 347 %
 348 */
 349 ModuleExport void UnregisterJBIGImage(void)
 350 {
 351   (void) UnregisterMagickInfo("BIE");
 352   (void) UnregisterMagickInfo("JBG");
 353   (void) UnregisterMagickInfo("JBIG");
 354 }
 355 \f
 356 #if defined(MAGICKCORE_JBIG_DELEGATE)
 357 /*
 358 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 359 %                                                                             %
 360 %                                                                             %
 361 %                                                                             %
 362 %   W r i t e J B I G I m a g e                                               %
 363 %                                                                             %
 364 %                                                                             %
 365 %                                                                             %
 366 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 367 %
 368 %  WriteJBIGImage() writes an image in the JBIG encoded image format.
 369 %
 370 %  The format of the WriteJBIGImage method is:
 371 %
 372 %      MagickBooleanType WriteJBIGImage(const ImageInfo *image_info,
 373 %        Image *image,ExceptionInfo *exception)
 374 %
 375 %  A description of each parameter follows.
 376 %
 377 %    o image_info: the image info.
 378 %
 379 %    o image:  The image.
 380 %
 381 %    o exception: return any errors or warnings in this structure.
 382 %
 383 */
 384
 385 static void JBIGEncode(unsigned char *pixels,size_t length,void *data)
 386 {
 387   Image
 388     *image;
 389
 390   image=(Image *) data;
 391   (void) WriteBlob(image,length,pixels);
 392 }
 393
 394 static MagickBooleanType WriteJBIGImage(const ImageInfo *image_info,
 395   Image *image,ExceptionInfo *exception)
 396 {
 397   double
 398     version;
 399
 400   MagickBooleanType
 401     status;
 402
 403   MagickOffsetType
 404     scene;
 405
 406   register const Quantum
 407     *p;
 408
 409   register ssize_t
 410     x;
 411
 412   register unsigned char
 413     *q;
 414
 415   size_t
 416     number_packets;
 417
 418   ssize_t
 419     y;
 420
 421   struct jbg_enc_state
 422     jbig_info;
 423
 424   unsigned char
 425     bit,
 426     byte,
 427     *pixels;
 428
 429   /*
 430     Open image file.
 431   */
 432   assert(image_info != (const ImageInfo *) NULL);
 433   assert(image_info->signature == MagickSignature);
 434   assert(image != (Image *) NULL);
 435   assert(image->signature == MagickSignature);
 436   if (image->debug != MagickFalse)
 437     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 438   assert(exception != (ExceptionInfo *) NULL);
 439   assert(exception->signature == MagickSignature);
 440   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 441   if (status == MagickFalse)
 442     return(status);
 443   version=StringToDouble(JBG_VERSION,(char **) NULL);
 444   scene=0;
 445   do
 446   {
 447     /*
 448       Allocate pixel data.
 449     */
 450     if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
 451       (void) TransformImageColorspace(image,sRGBColorspace,exception);
 452     number_packets=(image->columns+7)/8;
 453     pixels=(unsigned char *) AcquireQuantumMemory(number_packets,
 454       image->rows*sizeof(*pixels));
 455     if (pixels == (unsigned char *) NULL)
 456       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 457     /*
 458       Convert pixels to a bitmap.
 459     */
 460     (void) SetImageType(image,BilevelType,exception);
 461     q=pixels;
 462     for (y=0; y < (ssize_t) image->rows; y++)
 463     {
 464       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 465       if (p == (const Quantum *) NULL)
 466         break;
 467       bit=0;
 468       byte=0;
 469       for (x=0; x < (ssize_t) image->columns; x++)
 470       {
 471         byte<<=1;
 472         if (GetPixelIntensity(image,p) < (QuantumRange/2.0))
 473           byte|=0x01;
 474         bit++;
 475         if (bit == 8)
 476           {
 477             *q++=byte;
 478             bit=0;
 479             byte=0;
 480           }
 481         p+=GetPixelChannels(image);
 482       }
 483       if (bit != 0)
 484         *q++=byte << (8-bit);
 485       if (image->previous == (Image *) NULL)
 486         {
 487           status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 488             image->rows);
 489           if (status == MagickFalse)
 490             break;
 491         }
 492     }
 493     /*
 494       Initialize JBIG info structure.
 495     */
 496     jbg_enc_init(&jbig_info,(unsigned long) image->columns,(unsigned long)
 497       image->rows,1,&pixels,(void (*)(unsigned char *,size_t,void *))
 498       JBIGEncode,image);
 499     if (image_info->scene != 0)
 500       jbg_enc_layers(&jbig_info,(int) image_info->scene);
 501     else
 502       {
 503         size_t
 504           x_resolution,
 505           y_resolution;
 506
 507         x_resolution=640;
 508         y_resolution=480;
 509         if (image_info->density != (char *) NULL)
 510           {
 511             GeometryInfo
 512               geometry_info;
 513
 514             MagickStatusType
 515               flags;
 516
 517             flags=ParseGeometry(image_info->density,&geometry_info);
 518             x_resolution=geometry_info.rho;
 519             y_resolution=geometry_info.sigma;
 520             if ((flags & SigmaValue) == 0)
 521               y_resolution=x_resolution;
 522           }
 523         if (image->units == PixelsPerCentimeterResolution)
 524           {
 525             x_resolution=(size_t) (100.0*2.54*x_resolution+0.5)/100.0;
 526             y_resolution=(size_t) (100.0*2.54*y_resolution+0.5)/100.0;
 527           }
 528         (void) jbg_enc_lrlmax(&jbig_info,(unsigned long) x_resolution,
 529           (unsigned long) y_resolution);
 530       }
 531     (void) jbg_enc_lrange(&jbig_info,-1,-1);
 532     jbg_enc_options(&jbig_info,JBG_ILEAVE | JBG_SMID,JBG_TPDON | JBG_TPBON |
 533       JBG_DPON,version < 1.6 ? -1 : 0,-1,-1);
 534     /*
 535       Write JBIG image.
 536     */
 537     jbg_enc_out(&jbig_info);
 538     jbg_enc_free(&jbig_info);
 539     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 540     if (GetNextImageInList(image) == (Image *) NULL)
 541       break;
 542     image=SyncNextImageInList(image);
 543     status=SetImageProgress(image,SaveImagesTag,scene++,
 544       GetImageListLength(image));
 545     if (status == MagickFalse)
 546       break;
 547   } while (image_info->adjoin != MagickFalse);
 548   (void) CloseBlob(image);
 549   return(MagickTrue);
 550 }
 551 #endif