granicus.if.org Git - imagemagick/blob - coders/jp2.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                              JJJ  PPPP    222                               %
   7 %                               J   P   P  2   2                              %
   8 %                               J   PPPP     22                               %
   9 %                            J  J   P       2                                 %
  10 %                             JJ    P      22222                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                     Read/Write JPEG-2000 Image Format                       %
  14 %                                                                             %
  15 %                                   Cristy                                    %
  16 %                                Nathan Brown                                 %
  17 %                                 June 2001                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2014 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/artifact.h"
  44 #include "MagickCore/attribute.h"
  45 #include "MagickCore/blob.h"
  46 #include "MagickCore/blob-private.h"
  47 #include "MagickCore/cache.h"
  48 #include "MagickCore/colorspace.h"
  49 #include "MagickCore/colorspace-private.h"
  50 #include "MagickCore/color.h"
  51 #include "MagickCore/color-private.h"
  52 #include "MagickCore/exception.h"
  53 #include "MagickCore/exception-private.h"
  54 #include "MagickCore/image.h"
  55 #include "MagickCore/image-private.h"
  56 #include "MagickCore/list.h"
  57 #include "MagickCore/magick.h"
  58 #include "MagickCore/memory_.h"
  59 #include "MagickCore/monitor.h"
  60 #include "MagickCore/monitor-private.h"
  61 #include "MagickCore/option.h"
  62 #include "MagickCore/pixel-accessor.h"
  63 #include "MagickCore/profile.h"
  64 #include "MagickCore/property.h"
  65 #include "MagickCore/quantum-private.h"
  66 #include "MagickCore/semaphore.h"
  67 #include "MagickCore/static.h"
  68 #include "MagickCore/statistic.h"
  69 #include "MagickCore/string_.h"
  70 #include "MagickCore/string-private.h"
  71 #include "MagickCore/module.h"
  72 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  73 #include <openjpeg.h>
  74 #endif
  75 \f
  76 /*
  77   Forward declarations.
  78 */
  79 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  80 static MagickBooleanType
  81   WriteJP2Image(const ImageInfo *,Image *,ExceptionInfo *);
  82 #endif
  83 \f
  84 /*
  85 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  86 %                                                                             %
  87 %                                                                             %
  88 %                                                                             %
  89 %   I s J 2 K                                                                 %
  90 %                                                                             %
  91 %                                                                             %
  92 %                                                                             %
  93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  94 %
  95 %  IsJ2K() returns MagickTrue if the image format type, identified by the
  96 %  magick string, is J2K.
  97 %
  98 %  The format of the IsJ2K method is:
  99 %
 100 %      MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
 101 %
 102 %  A description of each parameter follows:
 103 %
 104 %    o magick: compare image format pattern against these bytes.
 105 %
 106 %    o length: Specifies the length of the magick string.
 107 %
 108 */
 109 static MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
 110 {
 111   if (length < 4)
 112     return(MagickFalse);
 113   if (memcmp(magick,"\xff\x4f\xff\x51",4) == 0)
 114     return(MagickTrue);
 115   return(MagickFalse);
 116 }
 117 \f
 118 /*
 119 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 120 %                                                                             %
 121 %                                                                             %
 122 %                                                                             %
 123 %   I s J P 2                                                                 %
 124 %                                                                             %
 125 %                                                                             %
 126 %                                                                             %
 127 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 128 %
 129 %  IsJP2() returns MagickTrue if the image format type, identified by the
 130 %  magick string, is JP2.
 131 %
 132 %  The format of the IsJP2 method is:
 133 %
 134 %      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 135 %
 136 %  A description of each parameter follows:
 137 %
 138 %    o magick: compare image format pattern against these bytes.
 139 %
 140 %    o length: Specifies the length of the magick string.
 141 %
 142 */
 143 static MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 144 {
 145   if (length < 4)
 146     return(MagickFalse);
 147   if (memcmp(magick,"\x0d\x0a\x87\x0a",4) == 0)
 148     return(MagickTrue);
 149   if (length < 12)
 150     return(MagickFalse);
 151   if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
 152     return(MagickTrue);
 153   return(MagickFalse);
 154 }
 155 \f
 156 /*
 157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 158 %                                                                             %
 159 %                                                                             %
 160 %                                                                             %
 161 %   R e a d J P 2 I m a g e                                                   %
 162 %                                                                             %
 163 %                                                                             %
 164 %                                                                             %
 165 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 166 %
 167 %  ReadJP2Image() reads a JPEG 2000 Image file (JP2) or JPEG 2000
 168 %  codestream (JPC) image file and returns it.  It allocates the memory
 169 %  necessary for the new Image structure and returns a pointer to the new
 170 %  image or set of images.
 171 %
 172 %  JP2 support is originally written by Nathan Brown, nathanbrown@letu.edu.
 173 %
 174 %  The format of the ReadJP2Image method is:
 175 %
 176 %      Image *ReadJP2Image(const ImageInfo *image_info,
 177 %        ExceptionInfo *exception)
 178 %
 179 %  A description of each parameter follows:
 180 %
 181 %    o image_info: the image info.
 182 %
 183 %    o exception: return any errors or warnings in this structure.
 184 %
 185 */
 186 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 187 static void JP2ErrorHandler(const char *message,void *client_data)
 188 {
 189   ExceptionInfo
 190     *exception;
 191
 192   exception=(ExceptionInfo *) client_data;
 193   (void) ThrowMagickException(exception,GetMagickModule(),CoderError,
 194     message,"`%s'","OpenJP2");
 195 }
 196
 197 static OPJ_SIZE_T JP2ReadHandler(void *buffer,OPJ_SIZE_T length,void *context)
 198 {
 199   Image
 200     *image;
 201
 202   ssize_t
 203     count;
 204
 205   image=(Image *) context;
 206   count=ReadBlob(image,(ssize_t) length,(unsigned char *) buffer);
 207   if (count == 0)
 208     return((OPJ_SIZE_T) -1);
 209   return((OPJ_SIZE_T) count);
 210 }
 211
 212 static OPJ_BOOL JP2SeekHandler(OPJ_OFF_T offset,void *context)
 213 {
 214   Image
 215     *image;
 216
 217   image=(Image *) context;
 218   return(SeekBlob(image,offset,SEEK_SET) < 0 ? OPJ_FALSE : OPJ_TRUE);
 219 }
 220
 221 static OPJ_OFF_T JP2SkipHandler(OPJ_OFF_T offset,void *context)
 222 {
 223   Image
 224     *image;
 225
 226   image=(Image *) context;
 227   return(SeekBlob(image,offset,SEEK_CUR) < 0 ? -1 : offset);
 228 }
 229
 230 static void JP2WarningHandler(const char *message,void *client_data)
 231 {
 232   ExceptionInfo
 233     *exception;
 234
 235   exception=(ExceptionInfo *) client_data;
 236   (void) ThrowMagickException(exception,GetMagickModule(),CoderWarning,
 237     message,"`%s'","OpenJP2");
 238 }
 239
 240 static OPJ_SIZE_T JP2WriteHandler(void *buffer,OPJ_SIZE_T length,void *context)
 241 {
 242   Image
 243     *image;
 244
 245   ssize_t
 246     count;
 247
 248   image=(Image *) context;
 249   count=WriteBlob(image,(ssize_t) length,(unsigned char *) buffer);
 250   return((OPJ_SIZE_T) count);
 251 }
 252
 253 static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
 254 {
 255   const char
 256     *option;
 257
 258   Image
 259     *image;
 260
 261   int
 262     jp2_status;
 263
 264   MagickBooleanType
 265     status;
 266
 267   opj_codec_t
 268     *jp2_codec;
 269
 270   opj_codestream_index_t
 271     *codestream_index = (opj_codestream_index_t *) NULL;
 272
 273   opj_dparameters_t
 274     parameters;
 275
 276   opj_image_t
 277     *jp2_image;
 278
 279   opj_stream_t
 280     *jp2_stream;
 281
 282   register ssize_t
 283     i;
 284
 285   ssize_t
 286     y;
 287
 288   unsigned char
 289     sans[4];
 290
 291   /*
 292     Open image file.
 293   */
 294   assert(image_info != (const ImageInfo *) NULL);
 295   assert(image_info->signature == MagickSignature);
 296   if (image_info->debug != MagickFalse)
 297     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 298       image_info->filename);
 299   assert(exception != (ExceptionInfo *) NULL);
 300   assert(exception->signature == MagickSignature);
 301   image=AcquireImage(image_info,exception);
 302   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 303   if (status == MagickFalse)
 304     {
 305       image=DestroyImageList(image);
 306       return((Image *) NULL);
 307     }
 308   /*
 309     Initialize JP2 codec.
 310   */
 311   if (ReadBlob(image,4,sans) != 4)
 312     {
 313       image=DestroyImageList(image);
 314       return((Image *) NULL);
 315     }
 316   (void) SeekBlob(image,SEEK_SET,0);
 317   if (LocaleCompare(image_info->magick,"JPT") == 0)
 318     jp2_codec=opj_create_decompress(OPJ_CODEC_JPT);
 319   else
 320     if (IsJ2K(sans,4) != MagickFalse)
 321       jp2_codec=opj_create_decompress(OPJ_CODEC_J2K);
 322     else
 323       jp2_codec=opj_create_decompress(OPJ_CODEC_JP2);
 324   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
 325   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
 326   opj_set_default_decoder_parameters(&parameters);
 327   option=GetImageOption(image_info,"jp2:reduce-factor");
 328   if (option != (const char *) NULL)
 329     parameters.cp_reduce=StringToInteger(option);
 330   option=GetImageOption(image_info,"jp2:quality-layers");
 331   if (option != (const char *) NULL)
 332     parameters.cp_layer=StringToInteger(option);
 333   if (opj_setup_decoder(jp2_codec,&parameters) == 0)
 334     {
 335       opj_destroy_codec(jp2_codec);
 336       ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
 337     }
 338   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,1);
 339   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
 340   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
 341   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
 342   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
 343   opj_stream_set_user_data(jp2_stream,image,NULL);
 344   opj_stream_set_user_data_length(jp2_stream,GetBlobSize(image));
 345   if (opj_read_header(jp2_stream,jp2_codec,&jp2_image) == 0)
 346     {
 347       opj_stream_destroy(jp2_stream);
 348       opj_destroy_codec(jp2_codec);
 349       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 350     }
 351   if ((image->columns != 0) && (image->rows != 0))
 352     {
 353       /*
 354         Extract an area from the image.
 355       */
 356       jp2_status=opj_set_decode_area(jp2_codec,jp2_image,image->extract_info.x,
 357         image->extract_info.y,image->extract_info.x+(ssize_t) image->columns,
 358         image->extract_info.y+(ssize_t) image->rows);
 359       if (jp2_status == 0)
 360         {
 361           opj_stream_destroy(jp2_stream);
 362           opj_destroy_codec(jp2_codec);
 363           opj_image_destroy(jp2_image);
 364           ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 365         }
 366     }
 367   if (image_info->number_scenes != 0)
 368     jp2_status=opj_get_decoded_tile(jp2_codec,jp2_stream,jp2_image,
 369       (unsigned int) image_info->scene);
 370   else
 371     {
 372       jp2_status=opj_decode(jp2_codec,jp2_stream,jp2_image);
 373       if (jp2_status != 0)
 374         jp2_status=opj_end_decompress(jp2_codec,jp2_stream);
 375     }
 376   if (jp2_status == 0)
 377     {
 378       opj_stream_destroy(jp2_stream);
 379       opj_destroy_codec(jp2_codec);
 380       opj_image_destroy(jp2_image);
 381       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 382     }
 383   opj_stream_destroy(jp2_stream);
 384   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 385   {
 386     if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
 387       {
 388         opj_destroy_codec(jp2_codec);
 389         opj_image_destroy(jp2_image);
 390         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
 391       }
 392   }
 393   /*
 394     Convert JP2 image.
 395   */
 396   image->columns=(size_t) jp2_image->comps[0].w;
 397   image->rows=(size_t) jp2_image->comps[0].h;
 398   image->depth=jp2_image->comps[0].prec;
 399   image->compression=JPEG2000Compression;
 400   if (jp2_image->numcomps <= 2)
 401     {
 402       SetImageColorspace(image,GRAYColorspace,exception);
 403       if (jp2_image->numcomps > 1)
 404         image->alpha_trait=BlendPixelTrait;
 405     }
 406   if (jp2_image->numcomps > 3)
 407     image->alpha_trait=BlendPixelTrait;
 408   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 409     if ((jp2_image->comps[i].dx > 1) || (jp2_image->comps[i].dy > 1))
 410       SetImageColorspace(image,YUVColorspace,exception);
 411   if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
 412     {
 413       StringInfo
 414         *profile;
 415
 416       profile=BlobToStringInfo(jp2_image->icc_profile_buf,
 417         jp2_image->icc_profile_len);
 418       if (profile != (StringInfo *) NULL)
 419         SetImageProfile(image,"icc",profile,exception);
 420     }
 421   for (y=0; y < (ssize_t) image->rows; y++)
 422   {
 423     register Quantum
 424       *restrict q;
 425
 426     register ssize_t
 427       x;
 428
 429     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 430     if (q == (Quantum *) NULL)
 431       break;
 432     for (x=0; x < (ssize_t) image->columns; x++)
 433     {
 434       register ssize_t
 435         i;
 436
 437       for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 438       {
 439         double
 440           pixel,
 441           scale;
 442
 443         scale=QuantumRange/(double) ((1UL << jp2_image->comps[i].prec)-1);
 444         pixel=scale*(jp2_image->comps[i].data[y/jp2_image->comps[i].dy*
 445           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx]+
 446           (jp2_image->comps[i].sgnd ? 1UL << (jp2_image->comps[i].prec-1) : 0));
 447         switch (i)
 448         {
 449            case 0:
 450            {
 451              SetPixelRed(image,ClampToQuantum(pixel),q);
 452              SetPixelGreen(image,ClampToQuantum(pixel),q);
 453              SetPixelBlue(image,ClampToQuantum(pixel),q);
 454              SetPixelAlpha(image,OpaqueAlpha,q);
 455              break;
 456            }
 457            case 1:
 458            {
 459              if (jp2_image->numcomps == 2)
 460                {
 461                  SetPixelAlpha(image,ClampToQuantum(pixel),q);
 462                  break;
 463                }
 464              SetPixelGreen(image,ClampToQuantum(pixel),q);
 465              break;
 466            }
 467            case 2:
 468            {
 469              SetPixelBlue(image,ClampToQuantum(pixel),q);
 470              break;
 471            }
 472            case 3:
 473            {
 474              SetPixelAlpha(image,ClampToQuantum(pixel),q);
 475              break;
 476            }
 477         }
 478       }
 479       q+=GetPixelChannels(image);
 480     }
 481     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 482       break;
 483     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 484       image->rows);
 485     if (status == MagickFalse)
 486       break;
 487   }
 488   /*
 489     Free resources.
 490   */
 491   opj_destroy_codec(jp2_codec);
 492   opj_image_destroy(jp2_image);
 493   opj_destroy_cstr_index(&codestream_index);
 494   return(GetFirstImageInList(image));
 495 }
 496 #endif
 497 \f
 498 /*
 499 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 500 %                                                                             %
 501 %                                                                             %
 502 %                                                                             %
 503 %   R e g i s t e r J P 2 I m a g e                                           %
 504 %                                                                             %
 505 %                                                                             %
 506 %                                                                             %
 507 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 508 %
 509 %  RegisterJP2Image() adds attributes for the JP2 image format to the list of
 510 %  supported formats.  The attributes include the image format tag, a method
 511 %  method to read and/or write the format, whether the format supports the
 512 %  saving of more than one frame to the same file or blob, whether the format
 513 %  supports native in-memory I/O, and a brief description of the format.
 514 %
 515 %  The format of the RegisterJP2Image method is:
 516 %
 517 %      size_t RegisterJP2Image(void)
 518 %
 519 */
 520 ModuleExport size_t RegisterJP2Image(void)
 521 {
 522   char
 523     version[MaxTextExtent];
 524
 525   MagickInfo
 526     *entry;
 527
 528   *version='\0';
 529 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 530   (void) FormatLocaleString(version,MaxTextExtent,"%s",opj_version());
 531 #endif
 532   entry=SetMagickInfo("JP2");
 533   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 534   if (*version != '\0')
 535     entry->version=ConstantString(version);
 536   entry->mime_type=ConstantString("image/jp2");
 537   entry->module=ConstantString("JP2");
 538   entry->magick=(IsImageFormatHandler *) IsJP2;
 539   entry->adjoin=MagickFalse;
 540   entry->seekable_stream=MagickTrue;
 541   entry->thread_support=NoThreadSupport;
 542 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 543   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 544   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 545 #endif
 546   (void) RegisterMagickInfo(entry);
 547   entry=SetMagickInfo("J2C");
 548   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 549   if (*version != '\0')
 550     entry->version=ConstantString(version);
 551   entry->mime_type=ConstantString("image/jp2");
 552   entry->module=ConstantString("JP2");
 553   entry->magick=(IsImageFormatHandler *) IsJ2K;
 554   entry->adjoin=MagickFalse;
 555   entry->seekable_stream=MagickTrue;
 556   entry->thread_support=NoThreadSupport;
 557 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 558   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 559   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 560 #endif
 561   (void) RegisterMagickInfo(entry);
 562   entry=SetMagickInfo("J2K");
 563   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 564   if (*version != '\0')
 565     entry->version=ConstantString(version);
 566   entry->mime_type=ConstantString("image/jp2");
 567   entry->module=ConstantString("JP2");
 568   entry->magick=(IsImageFormatHandler *) IsJ2K;
 569   entry->adjoin=MagickFalse;
 570   entry->seekable_stream=MagickTrue;
 571   entry->thread_support=NoThreadSupport;
 572 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 573   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 574   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 575 #endif
 576   (void) RegisterMagickInfo(entry);
 577   entry=SetMagickInfo("JPM");
 578   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 579   if (*version != '\0')
 580     entry->version=ConstantString(version);
 581   entry->mime_type=ConstantString("image/jp2");
 582   entry->module=ConstantString("JP2");
 583   entry->magick=(IsImageFormatHandler *) IsJP2;
 584   entry->adjoin=MagickFalse;
 585   entry->seekable_stream=MagickTrue;
 586   entry->thread_support=NoThreadSupport;
 587 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 588   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 589   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 590 #endif
 591   (void) RegisterMagickInfo(entry);
 592   entry=SetMagickInfo("JPT");
 593   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 594   if (*version != '\0')
 595     entry->version=ConstantString(version);
 596   entry->mime_type=ConstantString("image/jp2");
 597   entry->module=ConstantString("JP2");
 598   entry->magick=(IsImageFormatHandler *) IsJP2;
 599   entry->adjoin=MagickFalse;
 600   entry->seekable_stream=MagickTrue;
 601   entry->thread_support=NoThreadSupport;
 602 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 603   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 604   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 605 #endif
 606   (void) RegisterMagickInfo(entry);
 607   entry=SetMagickInfo("JPC");
 608   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 609   if (*version != '\0')
 610     entry->version=ConstantString(version);
 611   entry->mime_type=ConstantString("image/jp2");
 612   entry->module=ConstantString("JP2");
 613   entry->magick=(IsImageFormatHandler *) IsJP2;
 614   entry->adjoin=MagickFalse;
 615   entry->seekable_stream=MagickTrue;
 616   entry->thread_support=NoThreadSupport;
 617 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 618   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 619   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 620 #endif
 621   (void) RegisterMagickInfo(entry);
 622   return(MagickImageCoderSignature);
 623 }
 624 \f
 625 /*
 626 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 627 %                                                                             %
 628 %                                                                             %
 629 %                                                                             %
 630 %   U n r e g i s t e r J P 2 I m a g e                                       %
 631 %                                                                             %
 632 %                                                                             %
 633 %                                                                             %
 634 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 635 %
 636 %  UnregisterJP2Image() removes format registrations made by the JP2 module
 637 %  from the list of supported formats.
 638 %
 639 %  The format of the UnregisterJP2Image method is:
 640 %
 641 %      UnregisterJP2Image(void)
 642 %
 643 */
 644 ModuleExport void UnregisterJP2Image(void)
 645 {
 646   (void) UnregisterMagickInfo("JPC");
 647   (void) UnregisterMagickInfo("JPT");
 648   (void) UnregisterMagickInfo("JPM");
 649   (void) UnregisterMagickInfo("JP2");
 650   (void) UnregisterMagickInfo("J2K");
 651 }
 652 \f
 653 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 654 /*
 655 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 656 %                                                                             %
 657 %                                                                             %
 658 %                                                                             %
 659 %   W r i t e J P 2 I m a g e                                                 %
 660 %                                                                             %
 661 %                                                                             %
 662 %                                                                             %
 663 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 664 %
 665 %  WriteJP2Image() writes an image in the JPEG 2000 image format.
 666 %
 667 %  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
 668 %
 669 %  The format of the WriteJP2Image method is:
 670 %
 671 %      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 672 %        ExceptionInfo *exception)
 673 %
 674 %  A description of each parameter follows.
 675 %
 676 %    o image_info: the image info.
 677 %
 678 %    o image:  The image.
 679 %
 680 */
 681
 682 static void CinemaProfileCompliance(const opj_image_t *jp2_image,
 683   opj_cparameters_t *parameters)
 684 {
 685   /*
 686     Digital Cinema 4K profile compliant codestream.
 687   */
 688   parameters->tile_size_on=OPJ_FALSE;
 689   parameters->cp_tdx=1;
 690   parameters->cp_tdy=1;
 691   parameters->tp_flag='C';
 692   parameters->tp_on=1;
 693   parameters->cp_tx0=0;
 694   parameters->cp_ty0=0;
 695   parameters->image_offset_x0=0;
 696   parameters->image_offset_y0=0;
 697   parameters->cblockw_init=32;
 698   parameters->cblockh_init=32;
 699   parameters->csty|=0x01;
 700   parameters->prog_order=OPJ_CPRL;
 701   parameters->roi_compno=(-1);
 702   parameters->subsampling_dx=1;
 703   parameters->subsampling_dy=1;
 704   parameters->irreversible=1;
 705   if ((jp2_image->comps[0].w == 2048) || (jp2_image->comps[0].h == 1080))
 706     {
 707       /*
 708         Digital Cinema 2K.
 709       */
 710       parameters->cp_cinema=OPJ_CINEMA2K_24;
 711       parameters->cp_rsiz=OPJ_CINEMA2K;
 712       parameters->max_comp_size=1041666;
 713       if (parameters->numresolution > 6)
 714         parameters->numresolution=6;
 715
 716     }
 717   if ((jp2_image->comps[0].w == 4096) || (jp2_image->comps[0].h == 2160))
 718     {
 719       /*
 720         Digital Cinema 4K.
 721       */
 722       parameters->cp_cinema=OPJ_CINEMA4K_24;
 723       parameters->cp_rsiz=OPJ_CINEMA4K;
 724       parameters->max_comp_size=1041666;
 725       if (parameters->numresolution < 1)
 726         parameters->numresolution=1;
 727       if (parameters->numresolution > 7)
 728         parameters->numresolution=7;
 729       parameters->numpocs=2;
 730       parameters->POC[0].tile=1;
 731       parameters->POC[0].resno0=0;
 732       parameters->POC[0].compno0=0;
 733       parameters->POC[0].layno1=1;
 734       parameters->POC[0].resno1=parameters->numresolution-1;
 735       parameters->POC[0].compno1=3;
 736       parameters->POC[0].prg1=OPJ_CPRL;
 737       parameters->POC[1].tile=1;
 738       parameters->POC[1].resno0=parameters->numresolution-1;
 739       parameters->POC[1].compno0=0;
 740       parameters->POC[1].layno1=1;
 741       parameters->POC[1].resno1=parameters->numresolution;
 742       parameters->POC[1].compno1=3;
 743       parameters->POC[1].prg1=OPJ_CPRL;
 744     }
 745   parameters->tcp_numlayers=1;
 746   parameters->tcp_rates[0]=((float) (jp2_image->numcomps*jp2_image->comps[0].w*
 747     jp2_image->comps[0].h*jp2_image->comps[0].prec))/(parameters->max_comp_size*
 748     8*jp2_image->comps[0].dx*jp2_image->comps[0].dy);
 749   parameters->cp_disto_alloc=1;
 750 }
 751
 752 static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 753   ExceptionInfo *exception)
 754 {
 755   const char
 756     *option,
 757     *property;
 758
 759   int
 760     jp2_status;
 761
 762   MagickBooleanType
 763     status;
 764
 765   opj_codec_t
 766     *jp2_codec;
 767
 768   OPJ_COLOR_SPACE
 769     jp2_colorspace;
 770
 771   opj_cparameters_t
 772     parameters;
 773
 774   opj_image_cmptparm_t
 775     jp2_info[5];
 776
 777   opj_image_t
 778     *jp2_image;
 779
 780   opj_stream_t
 781     *jp2_stream;
 782
 783   register ssize_t
 784     i;
 785
 786   ssize_t
 787     y;
 788
 789   size_t
 790     channels;
 791
 792   /*
 793     Open image file.
 794   */
 795   assert(image_info != (const ImageInfo *) NULL);
 796   assert(image_info->signature == MagickSignature);
 797   assert(image != (Image *) NULL);
 798   assert(image->signature == MagickSignature);
 799   if (image->debug != MagickFalse)
 800     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 801   assert(exception != (ExceptionInfo *) NULL);
 802   assert(exception->signature == MagickSignature);
 803   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 804   if (status == MagickFalse)
 805     return(status);
 806   /*
 807     Initialize JPEG 2000 API.
 808   */
 809   opj_set_default_encoder_parameters(&parameters);
 810   for (i=1; i < 6; i++)
 811     if (((1U << (i+2)) > image->columns) && ((1U << (i+2)) > image->rows))
 812       break;
 813   parameters.numresolution=i;
 814   option=GetImageOption(image_info,"jp2:number-resolutions");
 815   if (option != (const char *) NULL)
 816     parameters.numresolution=StringToInteger(option);
 817   parameters.tcp_numlayers=1;
 818   parameters.tcp_rates[0]=0;  /* lossless */
 819   parameters.cp_disto_alloc=1;
 820   if (image->quality != 0)
 821     {
 822       parameters.tcp_distoratio[0]=(double) image->quality;
 823       parameters.cp_fixed_quality=OPJ_TRUE;
 824     }
 825   if (image_info->extract != (char *) NULL)
 826     {
 827       RectangleInfo
 828         geometry;
 829
 830       int
 831         flags;
 832
 833       /*
 834         Set tile size.
 835       */
 836       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 837       parameters.cp_tdx=(ssize_t) geometry.width;
 838       parameters.cp_tdy=(ssize_t) geometry.width;
 839       if ((flags & HeightValue) != 0)
 840         parameters.cp_tdy=(ssize_t) geometry.height;
 841       if ((flags & XValue) != 0)
 842         parameters.cp_tx0=geometry.x;
 843       if ((flags & YValue) != 0)
 844         parameters.cp_ty0=geometry.y;
 845       parameters.tile_size_on=OPJ_TRUE;
 846     }
 847   option=GetImageOption(image_info,"jp2:quality");
 848   if (option != (const char *) NULL)
 849     {
 850       register const char
 851         *p;
 852
 853       /*
 854         Set quality PSNR.
 855       */
 856       p=option;
 857       for (i=0; sscanf(p,"%f",&parameters.tcp_distoratio[i]) == 1; i++)
 858       {
 859         if (i > 100)
 860           break;
 861         while ((*p != '\0') && (*p != ','))
 862           p++;
 863         if (*p == '\0')
 864           break;
 865         p++;
 866       }
 867       parameters.tcp_numlayers=i+1;
 868       parameters.cp_fixed_quality=OPJ_TRUE;
 869     }
 870   option=GetImageOption(image_info,"jp2:progression-order");
 871   if (option != (const char *) NULL)
 872     {
 873       if (LocaleCompare(option,"LRCP") == 0)
 874         parameters.prog_order=OPJ_LRCP;
 875       if (LocaleCompare(option,"RLCP") == 0)
 876         parameters.prog_order=OPJ_RLCP;
 877       if (LocaleCompare(option,"RPCL") == 0)
 878         parameters.prog_order=OPJ_RPCL;
 879       if (LocaleCompare(option,"PCRL") == 0)
 880         parameters.prog_order=OPJ_PCRL;
 881       if (LocaleCompare(option,"CPRL") == 0)
 882         parameters.prog_order=OPJ_CPRL;
 883     }
 884   option=GetImageOption(image_info,"jp2:rate");
 885   if (option != (const char *) NULL)
 886     {
 887       register const char
 888         *p;
 889
 890       /*
 891         Set compression rate.
 892       */
 893       p=option;
 894       for (i=0; sscanf(p,"%f",&parameters.tcp_rates[i]) == 1; i++)
 895       {
 896         if (i >= 100)
 897           break;
 898         while ((*p != '\0') && (*p != ','))
 899           p++;
 900         if (*p == '\0')
 901           break;
 902         p++;
 903       }
 904       parameters.tcp_numlayers=i+1;
 905       parameters.cp_disto_alloc=OPJ_TRUE;
 906     }
 907   if (image_info->sampling_factor != (const char *) NULL)
 908     (void) sscanf(image_info->sampling_factor,"%d,%d",
 909       &parameters.subsampling_dx,&parameters.subsampling_dy);
 910   property=GetImageProperty(image,"comment",exception);
 911   if (property != (const char *) NULL)
 912     parameters.cp_comment=ConstantString(property);
 913   channels=3;
 914   jp2_colorspace=OPJ_CLRSPC_SRGB;
 915   if (image->colorspace == YUVColorspace)
 916     {
 917       jp2_colorspace=OPJ_CLRSPC_SYCC;
 918       parameters.subsampling_dx=2;
 919     }
 920   else
 921     {
 922       (void) TransformImageColorspace(image,sRGBColorspace,exception);
 923       if (IsGrayColorspace(image->colorspace) != MagickFalse)
 924         {
 925           channels=1;
 926           jp2_colorspace=OPJ_CLRSPC_GRAY;
 927         }
 928       if (image->alpha_trait == BlendPixelTrait)
 929         channels++;
 930     }
 931   parameters.tcp_mct=channels == 3 ? 1 : 0;
 932   ResetMagickMemory(jp2_info,0,sizeof(jp2_info));
 933   for (i=0; i < (ssize_t) channels; i++)
 934   {
 935     jp2_info[i].prec=image->depth;
 936     jp2_info[i].bpp=image->depth;
 937     if ((image->depth == 1) &&
 938         ((LocaleCompare(image_info->magick,"JPT") == 0) ||
 939          (LocaleCompare(image_info->magick,"JP2") == 0)))
 940       {
 941         jp2_info[i].prec++;  /* OpenJPEG returns exception for depth @ 1 */
 942         jp2_info[i].bpp++;
 943       }
 944     jp2_info[i].sgnd=0;
 945     jp2_info[i].dx=parameters.subsampling_dx;
 946     jp2_info[i].dy=parameters.subsampling_dy;
 947     jp2_info[i].w=image->columns;
 948     jp2_info[i].h=image->rows;
 949   }
 950   jp2_image=opj_image_create(channels,jp2_info,jp2_colorspace);
 951   if (jp2_image == (opj_image_t *) NULL)
 952     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
 953   jp2_image->x0=parameters.image_offset_x0;
 954   jp2_image->y0=parameters.image_offset_y0;
 955   jp2_image->x1=2*parameters.image_offset_x0+(image->columns-1)*
 956     parameters.subsampling_dx+1;
 957   jp2_image->y1=2*parameters.image_offset_y0+(image->rows-1)*
 958     parameters.subsampling_dx+1;
 959   if ((image->depth == 12) &&
 960       ((image->columns == 2048) || (image->rows == 1080) ||
 961        (image->columns == 4096) || (image->rows == 2160)))
 962     CinemaProfileCompliance(jp2_image,&parameters);
 963   /*
 964     Convert to JP2 pixels.
 965   */
 966   for (y=0; y < (ssize_t) image->rows; y++)
 967   {
 968     register const Quantum
 969       *p;
 970
 971     ssize_t
 972       x;
 973
 974     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 975     if (p == (const Quantum *) NULL)
 976       break;
 977     for (x=0; x < (ssize_t) image->columns; x++)
 978     {
 979       for (i=0; i < (ssize_t) channels; i++)
 980       {
 981         double
 982           scale;
 983
 984         register int
 985           *q;
 986
 987         scale=(double) ((1UL << jp2_image->comps[i].prec)-1)/QuantumRange;
 988         q=jp2_image->comps[i].data+(y/jp2_image->comps[i].dy*
 989           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx);
 990         switch (i)
 991         {
 992           case 0:
 993           {
 994             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
 995               {
 996                 *q=(int) (scale*GetPixelLuma(image,p));
 997                 break;
 998               }
 999             *q=(int) (scale*GetPixelRed(image,p));
1000             break;
1001           }
1002           case 1:
1003           {
1004             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
1005               {
1006                 *q=(int) (scale*GetPixelAlpha(image,p));
1007                 break;
1008               }
1009             *q=(int) (scale*GetPixelGreen(image,p));
1010             break;
1011           }
1012           case 2:
1013           {
1014             *q=(int) (scale*GetPixelBlue(image,p));
1015             break;
1016           }
1017           case 3:
1018           {
1019             *q=(int) (scale*GetPixelAlpha(image,p));
1020             break;
1021           }
1022         }
1023       }
1024       p+=GetPixelChannels(image);
1025     }
1026     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1027       image->rows);
1028     if (status == MagickFalse)
1029       break;
1030   }
1031   if (LocaleCompare(image_info->magick,"JPT") == 0)
1032     jp2_codec=opj_create_compress(OPJ_CODEC_JPT);
1033   else
1034     if (LocaleCompare(image_info->magick,"J2K") == 0)
1035       jp2_codec=opj_create_compress(OPJ_CODEC_J2K);
1036     else
1037       jp2_codec=opj_create_compress(OPJ_CODEC_JP2);
1038   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
1039   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
1040   opj_setup_encoder(jp2_codec,&parameters,jp2_image);
1041   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,OPJ_FALSE);
1042   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
1043   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
1044   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
1045   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
1046   opj_stream_set_user_data(jp2_stream,image,NULL);
1047   if (jp2_stream == (opj_stream_t *) NULL)
1048     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1049   jp2_status=opj_start_compress(jp2_codec,jp2_image,jp2_stream);
1050   if (jp2_status == 0)
1051     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1052   if ((opj_encode(jp2_codec,jp2_stream) == 0) ||
1053       (opj_end_compress(jp2_codec,jp2_stream) == 0))
1054     {
1055       opj_stream_destroy(jp2_stream);
1056       opj_destroy_codec(jp2_codec);
1057       opj_image_destroy(jp2_image);
1058       ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1059     }
1060   /*
1061     Free resources.
1062   */
1063   opj_stream_destroy(jp2_stream);
1064   opj_destroy_codec(jp2_codec);
1065   opj_image_destroy(jp2_image);
1066   (void) CloseBlob(image);
1067   return(MagickTrue);
1068 }
1069 #endif