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 1999-2015 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   jp2_status=1;
 352   if ((image->columns != 0) && (image->rows != 0))
 353     {
 354       /*
 355         Extract an area from the image.
 356       */
 357       jp2_status=opj_set_decode_area(jp2_codec,jp2_image,image->extract_info.x,
 358         image->extract_info.y,image->extract_info.x+(ssize_t) image->columns,
 359         image->extract_info.y+(ssize_t) image->rows);
 360       if (jp2_status == 0)
 361         {
 362           opj_stream_destroy(jp2_stream);
 363           opj_destroy_codec(jp2_codec);
 364           opj_image_destroy(jp2_image);
 365           ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 366         }
 367     }
 368   if (image_info->number_scenes != 0)
 369     jp2_status=opj_get_decoded_tile(jp2_codec,jp2_stream,jp2_image,
 370       (unsigned int) image_info->scene);
 371   else
 372     if (image->ping == MagickFalse)
 373       {
 374         jp2_status=opj_decode(jp2_codec,jp2_stream,jp2_image);
 375         if (jp2_status != 0)
 376           jp2_status=opj_end_decompress(jp2_codec,jp2_stream);
 377       }
 378   if (jp2_status == 0)
 379     {
 380       opj_stream_destroy(jp2_stream);
 381       opj_destroy_codec(jp2_codec);
 382       opj_image_destroy(jp2_image);
 383       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 384     }
 385   opj_stream_destroy(jp2_stream);
 386   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 387   {
 388     if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
 389       {
 390         opj_destroy_codec(jp2_codec);
 391         opj_image_destroy(jp2_image);
 392         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
 393       }
 394   }
 395   /*
 396     Convert JP2 image.
 397   */
 398   image->columns=(size_t) jp2_image->comps[0].w;
 399   image->rows=(size_t) jp2_image->comps[0].h;
 400   image->depth=jp2_image->comps[0].prec;
 401   image->compression=JPEG2000Compression;
 402   if (jp2_image->numcomps <= 2)
 403     {
 404       SetImageColorspace(image,GRAYColorspace,exception);
 405       if (jp2_image->numcomps > 1)
 406         image->alpha_trait=BlendPixelTrait;
 407     }
 408   if (jp2_image->numcomps > 3)
 409     image->alpha_trait=BlendPixelTrait;
 410   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 411     if ((jp2_image->comps[i].dx > 1) || (jp2_image->comps[i].dy > 1))
 412       SetImageColorspace(image,YUVColorspace,exception);
 413   if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
 414     {
 415       StringInfo
 416         *profile;
 417
 418       profile=BlobToStringInfo(jp2_image->icc_profile_buf,
 419         jp2_image->icc_profile_len);
 420       if (profile != (StringInfo *) NULL)
 421         SetImageProfile(image,"icc",profile,exception);
 422     }
 423   if (image->ping != MagickFalse)
 424     {
 425       opj_destroy_codec(jp2_codec);
 426       opj_image_destroy(jp2_image);
 427       opj_destroy_cstr_index(&codestream_index);
 428       return(GetFirstImageInList(image));
 429     }
 430   for (y=0; y < (ssize_t) image->rows; y++)
 431   {
 432     register Quantum
 433       *restrict q;
 434
 435     register ssize_t
 436       x;
 437
 438     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 439     if (q == (Quantum *) NULL)
 440       break;
 441     for (x=0; x < (ssize_t) image->columns; x++)
 442     {
 443       register ssize_t
 444         i;
 445
 446       for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 447       {
 448         double
 449           pixel,
 450           scale;
 451
 452         scale=QuantumRange/(double) ((1UL << jp2_image->comps[i].prec)-1);
 453         pixel=scale*(jp2_image->comps[i].data[y/jp2_image->comps[i].dy*
 454           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx]+
 455           (jp2_image->comps[i].sgnd ? 1UL << (jp2_image->comps[i].prec-1) : 0));
 456         switch (i)
 457         {
 458            case 0:
 459            {
 460              SetPixelRed(image,ClampToQuantum(pixel),q);
 461              SetPixelGreen(image,ClampToQuantum(pixel),q);
 462              SetPixelBlue(image,ClampToQuantum(pixel),q);
 463              SetPixelAlpha(image,OpaqueAlpha,q);
 464              break;
 465            }
 466            case 1:
 467            {
 468              if (jp2_image->numcomps == 2)
 469                {
 470                  SetPixelAlpha(image,ClampToQuantum(pixel),q);
 471                  break;
 472                }
 473              SetPixelGreen(image,ClampToQuantum(pixel),q);
 474              break;
 475            }
 476            case 2:
 477            {
 478              SetPixelBlue(image,ClampToQuantum(pixel),q);
 479              break;
 480            }
 481            case 3:
 482            {
 483              SetPixelAlpha(image,ClampToQuantum(pixel),q);
 484              break;
 485            }
 486         }
 487       }
 488       q+=GetPixelChannels(image);
 489     }
 490     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 491       break;
 492     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 493       image->rows);
 494     if (status == MagickFalse)
 495       break;
 496   }
 497   /*
 498     Free resources.
 499   */
 500   opj_destroy_codec(jp2_codec);
 501   opj_image_destroy(jp2_image);
 502   opj_destroy_cstr_index(&codestream_index);
 503   return(GetFirstImageInList(image));
 504 }
 505 #endif
 506 \f
 507 /*
 508 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 509 %                                                                             %
 510 %                                                                             %
 511 %                                                                             %
 512 %   R e g i s t e r J P 2 I m a g e                                           %
 513 %                                                                             %
 514 %                                                                             %
 515 %                                                                             %
 516 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 517 %
 518 %  RegisterJP2Image() adds attributes for the JP2 image format to the list of
 519 %  supported formats.  The attributes include the image format tag, a method
 520 %  method to read and/or write the format, whether the format supports the
 521 %  saving of more than one frame to the same file or blob, whether the format
 522 %  supports native in-memory I/O, and a brief description of the format.
 523 %
 524 %  The format of the RegisterJP2Image method is:
 525 %
 526 %      size_t RegisterJP2Image(void)
 527 %
 528 */
 529 ModuleExport size_t RegisterJP2Image(void)
 530 {
 531   char
 532     version[MaxTextExtent];
 533
 534   MagickInfo
 535     *entry;
 536
 537   *version='\0';
 538 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 539   (void) FormatLocaleString(version,MaxTextExtent,"%s",opj_version());
 540 #endif
 541   entry=SetMagickInfo("JP2");
 542   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 543   if (*version != '\0')
 544     entry->version=ConstantString(version);
 545   entry->mime_type=ConstantString("image/jp2");
 546   entry->module=ConstantString("JP2");
 547   entry->magick=(IsImageFormatHandler *) IsJP2;
 548   entry->adjoin=MagickFalse;
 549   entry->seekable_stream=MagickTrue;
 550   entry->thread_support=NoThreadSupport;
 551 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 552   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 553   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 554 #endif
 555   (void) RegisterMagickInfo(entry);
 556   entry=SetMagickInfo("J2C");
 557   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 558   if (*version != '\0')
 559     entry->version=ConstantString(version);
 560   entry->mime_type=ConstantString("image/jp2");
 561   entry->module=ConstantString("JP2");
 562   entry->magick=(IsImageFormatHandler *) IsJ2K;
 563   entry->adjoin=MagickFalse;
 564   entry->seekable_stream=MagickTrue;
 565   entry->thread_support=NoThreadSupport;
 566 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 567   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 568   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 569 #endif
 570   (void) RegisterMagickInfo(entry);
 571   entry=SetMagickInfo("J2K");
 572   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 573   if (*version != '\0')
 574     entry->version=ConstantString(version);
 575   entry->mime_type=ConstantString("image/jp2");
 576   entry->module=ConstantString("JP2");
 577   entry->magick=(IsImageFormatHandler *) IsJ2K;
 578   entry->adjoin=MagickFalse;
 579   entry->seekable_stream=MagickTrue;
 580   entry->thread_support=NoThreadSupport;
 581 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 582   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 583   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 584 #endif
 585   (void) RegisterMagickInfo(entry);
 586   entry=SetMagickInfo("JPM");
 587   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 588   if (*version != '\0')
 589     entry->version=ConstantString(version);
 590   entry->mime_type=ConstantString("image/jp2");
 591   entry->module=ConstantString("JP2");
 592   entry->magick=(IsImageFormatHandler *) IsJP2;
 593   entry->adjoin=MagickFalse;
 594   entry->seekable_stream=MagickTrue;
 595   entry->thread_support=NoThreadSupport;
 596 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 597   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 598   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 599 #endif
 600   (void) RegisterMagickInfo(entry);
 601   entry=SetMagickInfo("JPT");
 602   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 603   if (*version != '\0')
 604     entry->version=ConstantString(version);
 605   entry->mime_type=ConstantString("image/jp2");
 606   entry->module=ConstantString("JP2");
 607   entry->magick=(IsImageFormatHandler *) IsJP2;
 608   entry->adjoin=MagickFalse;
 609   entry->seekable_stream=MagickTrue;
 610   entry->thread_support=NoThreadSupport;
 611 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 612   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 613   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 614 #endif
 615   (void) RegisterMagickInfo(entry);
 616   entry=SetMagickInfo("JPC");
 617   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 618   if (*version != '\0')
 619     entry->version=ConstantString(version);
 620   entry->mime_type=ConstantString("image/jp2");
 621   entry->module=ConstantString("JP2");
 622   entry->magick=(IsImageFormatHandler *) IsJP2;
 623   entry->adjoin=MagickFalse;
 624   entry->seekable_stream=MagickTrue;
 625   entry->thread_support=NoThreadSupport;
 626 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 627   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 628   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 629 #endif
 630   (void) RegisterMagickInfo(entry);
 631   return(MagickImageCoderSignature);
 632 }
 633 \f
 634 /*
 635 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 636 %                                                                             %
 637 %                                                                             %
 638 %                                                                             %
 639 %   U n r e g i s t e r J P 2 I m a g e                                       %
 640 %                                                                             %
 641 %                                                                             %
 642 %                                                                             %
 643 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 644 %
 645 %  UnregisterJP2Image() removes format registrations made by the JP2 module
 646 %  from the list of supported formats.
 647 %
 648 %  The format of the UnregisterJP2Image method is:
 649 %
 650 %      UnregisterJP2Image(void)
 651 %
 652 */
 653 ModuleExport void UnregisterJP2Image(void)
 654 {
 655   (void) UnregisterMagickInfo("JPC");
 656   (void) UnregisterMagickInfo("JPT");
 657   (void) UnregisterMagickInfo("JPM");
 658   (void) UnregisterMagickInfo("JP2");
 659   (void) UnregisterMagickInfo("J2K");
 660 }
 661 \f
 662 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 663 /*
 664 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 665 %                                                                             %
 666 %                                                                             %
 667 %                                                                             %
 668 %   W r i t e J P 2 I m a g e                                                 %
 669 %                                                                             %
 670 %                                                                             %
 671 %                                                                             %
 672 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 673 %
 674 %  WriteJP2Image() writes an image in the JPEG 2000 image format.
 675 %
 676 %  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
 677 %
 678 %  The format of the WriteJP2Image method is:
 679 %
 680 %      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 681 %        ExceptionInfo *exception)
 682 %
 683 %  A description of each parameter follows.
 684 %
 685 %    o image_info: the image info.
 686 %
 687 %    o image:  The image.
 688 %
 689 */
 690
 691 static void CinemaProfileCompliance(const opj_image_t *jp2_image,
 692   opj_cparameters_t *parameters)
 693 {
 694   /*
 695     Digital Cinema 4K profile compliant codestream.
 696   */
 697   parameters->tile_size_on=OPJ_FALSE;
 698   parameters->cp_tdx=1;
 699   parameters->cp_tdy=1;
 700   parameters->tp_flag='C';
 701   parameters->tp_on=1;
 702   parameters->cp_tx0=0;
 703   parameters->cp_ty0=0;
 704   parameters->image_offset_x0=0;
 705   parameters->image_offset_y0=0;
 706   parameters->cblockw_init=32;
 707   parameters->cblockh_init=32;
 708   parameters->csty|=0x01;
 709   parameters->prog_order=OPJ_CPRL;
 710   parameters->roi_compno=(-1);
 711   parameters->subsampling_dx=1;
 712   parameters->subsampling_dy=1;
 713   parameters->irreversible=1;
 714   if ((jp2_image->comps[0].w == 2048) || (jp2_image->comps[0].h == 1080))
 715     {
 716       /*
 717         Digital Cinema 2K.
 718       */
 719       parameters->cp_cinema=OPJ_CINEMA2K_24;
 720       parameters->cp_rsiz=OPJ_CINEMA2K;
 721       parameters->max_comp_size=1041666;
 722       if (parameters->numresolution > 6)
 723         parameters->numresolution=6;
 724
 725     }
 726   if ((jp2_image->comps[0].w == 4096) || (jp2_image->comps[0].h == 2160))
 727     {
 728       /*
 729         Digital Cinema 4K.
 730       */
 731       parameters->cp_cinema=OPJ_CINEMA4K_24;
 732       parameters->cp_rsiz=OPJ_CINEMA4K;
 733       parameters->max_comp_size=1041666;
 734       if (parameters->numresolution < 1)
 735         parameters->numresolution=1;
 736       if (parameters->numresolution > 7)
 737         parameters->numresolution=7;
 738       parameters->numpocs=2;
 739       parameters->POC[0].tile=1;
 740       parameters->POC[0].resno0=0;
 741       parameters->POC[0].compno0=0;
 742       parameters->POC[0].layno1=1;
 743       parameters->POC[0].resno1=parameters->numresolution-1;
 744       parameters->POC[0].compno1=3;
 745       parameters->POC[0].prg1=OPJ_CPRL;
 746       parameters->POC[1].tile=1;
 747       parameters->POC[1].resno0=parameters->numresolution-1;
 748       parameters->POC[1].compno0=0;
 749       parameters->POC[1].layno1=1;
 750       parameters->POC[1].resno1=parameters->numresolution;
 751       parameters->POC[1].compno1=3;
 752       parameters->POC[1].prg1=OPJ_CPRL;
 753     }
 754   parameters->tcp_numlayers=1;
 755   parameters->tcp_rates[0]=((float) (jp2_image->numcomps*jp2_image->comps[0].w*
 756     jp2_image->comps[0].h*jp2_image->comps[0].prec))/(parameters->max_comp_size*
 757     8*jp2_image->comps[0].dx*jp2_image->comps[0].dy);
 758   parameters->cp_disto_alloc=1;
 759 }
 760
 761 static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 762   ExceptionInfo *exception)
 763 {
 764   const char
 765     *option,
 766     *property;
 767
 768   int
 769     jp2_status;
 770
 771   MagickBooleanType
 772     status;
 773
 774   opj_codec_t
 775     *jp2_codec;
 776
 777   OPJ_COLOR_SPACE
 778     jp2_colorspace;
 779
 780   opj_cparameters_t
 781     parameters;
 782
 783   opj_image_cmptparm_t
 784     jp2_info[5];
 785
 786   opj_image_t
 787     *jp2_image;
 788
 789   opj_stream_t
 790     *jp2_stream;
 791
 792   register ssize_t
 793     i;
 794
 795   ssize_t
 796     y;
 797
 798   size_t
 799     channels;
 800
 801   /*
 802     Open image file.
 803   */
 804   assert(image_info != (const ImageInfo *) NULL);
 805   assert(image_info->signature == MagickSignature);
 806   assert(image != (Image *) NULL);
 807   assert(image->signature == MagickSignature);
 808   if (image->debug != MagickFalse)
 809     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 810   assert(exception != (ExceptionInfo *) NULL);
 811   assert(exception->signature == MagickSignature);
 812   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 813   if (status == MagickFalse)
 814     return(status);
 815   /*
 816     Initialize JPEG 2000 API.
 817   */
 818   opj_set_default_encoder_parameters(&parameters);
 819   for (i=1; i < 6; i++)
 820     if (((1U << (i+2)) > image->columns) && ((1U << (i+2)) > image->rows))
 821       break;
 822   parameters.numresolution=i;
 823   option=GetImageOption(image_info,"jp2:number-resolutions");
 824   if (option != (const char *) NULL)
 825     parameters.numresolution=StringToInteger(option);
 826   parameters.tcp_numlayers=1;
 827   parameters.tcp_rates[0]=0;  /* lossless */
 828   parameters.cp_disto_alloc=1;
 829   if (image->quality != 0)
 830     {
 831       parameters.tcp_distoratio[0]=(double) image->quality;
 832       parameters.cp_fixed_quality=OPJ_TRUE;
 833     }
 834   if (image_info->extract != (char *) NULL)
 835     {
 836       RectangleInfo
 837         geometry;
 838
 839       int
 840         flags;
 841
 842       /*
 843         Set tile size.
 844       */
 845       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 846       parameters.cp_tdx=(int) geometry.width;
 847       parameters.cp_tdy=(int) geometry.width;
 848       if ((flags & HeightValue) != 0)
 849         parameters.cp_tdy=(int) geometry.height;
 850       if ((flags & XValue) != 0)
 851         parameters.cp_tx0=geometry.x;
 852       if ((flags & YValue) != 0)
 853         parameters.cp_ty0=geometry.y;
 854       parameters.tile_size_on=OPJ_TRUE;
 855     }
 856   option=GetImageOption(image_info,"jp2:quality");
 857   if (option != (const char *) NULL)
 858     {
 859       register const char
 860         *p;
 861
 862       /*
 863         Set quality PSNR.
 864       */
 865       p=option;
 866       for (i=0; sscanf(p,"%f",&parameters.tcp_distoratio[i]) == 1; i++)
 867       {
 868         if (i > 100)
 869           break;
 870         while ((*p != '\0') && (*p != ','))
 871           p++;
 872         if (*p == '\0')
 873           break;
 874         p++;
 875       }
 876       parameters.tcp_numlayers=i+1;
 877       parameters.cp_fixed_quality=OPJ_TRUE;
 878     }
 879   option=GetImageOption(image_info,"jp2:progression-order");
 880   if (option != (const char *) NULL)
 881     {
 882       if (LocaleCompare(option,"LRCP") == 0)
 883         parameters.prog_order=OPJ_LRCP;
 884       if (LocaleCompare(option,"RLCP") == 0)
 885         parameters.prog_order=OPJ_RLCP;
 886       if (LocaleCompare(option,"RPCL") == 0)
 887         parameters.prog_order=OPJ_RPCL;
 888       if (LocaleCompare(option,"PCRL") == 0)
 889         parameters.prog_order=OPJ_PCRL;
 890       if (LocaleCompare(option,"CPRL") == 0)
 891         parameters.prog_order=OPJ_CPRL;
 892     }
 893   option=GetImageOption(image_info,"jp2:rate");
 894   if (option != (const char *) NULL)
 895     {
 896       register const char
 897         *p;
 898
 899       /*
 900         Set compression rate.
 901       */
 902       p=option;
 903       for (i=0; sscanf(p,"%f",&parameters.tcp_rates[i]) == 1; i++)
 904       {
 905         if (i >= 100)
 906           break;
 907         while ((*p != '\0') && (*p != ','))
 908           p++;
 909         if (*p == '\0')
 910           break;
 911         p++;
 912       }
 913       parameters.tcp_numlayers=i+1;
 914       parameters.cp_disto_alloc=OPJ_TRUE;
 915     }
 916   if (image_info->sampling_factor != (const char *) NULL)
 917     (void) sscanf(image_info->sampling_factor,"%d,%d",
 918       &parameters.subsampling_dx,&parameters.subsampling_dy);
 919   property=GetImageProperty(image,"comment",exception);
 920   if (property != (const char *) NULL)
 921     parameters.cp_comment=ConstantString(property);
 922   channels=3;
 923   jp2_colorspace=OPJ_CLRSPC_SRGB;
 924   if (image->colorspace == YUVColorspace)
 925     {
 926       jp2_colorspace=OPJ_CLRSPC_SYCC;
 927       parameters.subsampling_dx=2;
 928     }
 929   else
 930     {
 931       (void) TransformImageColorspace(image,sRGBColorspace,exception);
 932       if (IsGrayColorspace(image->colorspace) != MagickFalse)
 933         {
 934           channels=1;
 935           jp2_colorspace=OPJ_CLRSPC_GRAY;
 936         }
 937       if (image->alpha_trait == BlendPixelTrait)
 938         channels++;
 939     }
 940   parameters.tcp_mct=channels == 3 ? 1 : 0;
 941   ResetMagickMemory(jp2_info,0,sizeof(jp2_info));
 942   for (i=0; i < (ssize_t) channels; i++)
 943   {
 944     jp2_info[i].prec=image->depth;
 945     jp2_info[i].bpp=image->depth;
 946     if ((image->depth == 1) &&
 947         ((LocaleCompare(image_info->magick,"JPT") == 0) ||
 948          (LocaleCompare(image_info->magick,"JP2") == 0)))
 949       {
 950         jp2_info[i].prec++;  /* OpenJPEG returns exception for depth @ 1 */
 951         jp2_info[i].bpp++;
 952       }
 953     jp2_info[i].sgnd=0;
 954     jp2_info[i].dx=parameters.subsampling_dx;
 955     jp2_info[i].dy=parameters.subsampling_dy;
 956     jp2_info[i].w=image->columns;
 957     jp2_info[i].h=image->rows;
 958   }
 959   jp2_image=opj_image_create(channels,jp2_info,jp2_colorspace);
 960   if (jp2_image == (opj_image_t *) NULL)
 961     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
 962   jp2_image->x0=parameters.image_offset_x0;
 963   jp2_image->y0=parameters.image_offset_y0;
 964   jp2_image->x1=(unsigned int) (2*parameters.image_offset_x0+(image->columns-1)*
 965     parameters.subsampling_dx+1);
 966   jp2_image->y1=(unsigned int) (2*parameters.image_offset_y0+(image->rows-1)*
 967     parameters.subsampling_dx+1);
 968   if ((image->depth == 12) &&
 969       ((image->columns == 2048) || (image->rows == 1080) ||
 970        (image->columns == 4096) || (image->rows == 2160)))
 971     CinemaProfileCompliance(jp2_image,&parameters);
 972   /*
 973     Convert to JP2 pixels.
 974   */
 975   for (y=0; y < (ssize_t) image->rows; y++)
 976   {
 977     register const Quantum
 978       *p;
 979
 980     ssize_t
 981       x;
 982
 983     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 984     if (p == (const Quantum *) NULL)
 985       break;
 986     for (x=0; x < (ssize_t) image->columns; x++)
 987     {
 988       for (i=0; i < (ssize_t) channels; i++)
 989       {
 990         double
 991           scale;
 992
 993         register int
 994           *q;
 995
 996         scale=(double) ((1UL << jp2_image->comps[i].prec)-1)/QuantumRange;
 997         q=jp2_image->comps[i].data+(y/jp2_image->comps[i].dy*
 998           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx);
 999         switch (i)
1000         {
1001           case 0:
1002           {
1003             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
1004               {
1005                 *q=(int) (scale*GetPixelLuma(image,p));
1006                 break;
1007               }
1008             *q=(int) (scale*GetPixelRed(image,p));
1009             break;
1010           }
1011           case 1:
1012           {
1013             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
1014               {
1015                 *q=(int) (scale*GetPixelAlpha(image,p));
1016                 break;
1017               }
1018             *q=(int) (scale*GetPixelGreen(image,p));
1019             break;
1020           }
1021           case 2:
1022           {
1023             *q=(int) (scale*GetPixelBlue(image,p));
1024             break;
1025           }
1026           case 3:
1027           {
1028             *q=(int) (scale*GetPixelAlpha(image,p));
1029             break;
1030           }
1031         }
1032       }
1033       p+=GetPixelChannels(image);
1034     }
1035     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1036       image->rows);
1037     if (status == MagickFalse)
1038       break;
1039   }
1040   if (LocaleCompare(image_info->magick,"JPT") == 0)
1041     jp2_codec=opj_create_compress(OPJ_CODEC_JPT);
1042   else
1043     if (LocaleCompare(image_info->magick,"J2K") == 0)
1044       jp2_codec=opj_create_compress(OPJ_CODEC_J2K);
1045     else
1046       jp2_codec=opj_create_compress(OPJ_CODEC_JP2);
1047   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
1048   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
1049   opj_setup_encoder(jp2_codec,&parameters,jp2_image);
1050   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,OPJ_FALSE);
1051   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
1052   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
1053   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
1054   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
1055   opj_stream_set_user_data(jp2_stream,image,NULL);
1056   if (jp2_stream == (opj_stream_t *) NULL)
1057     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1058   jp2_status=opj_start_compress(jp2_codec,jp2_image,jp2_stream);
1059   if (jp2_status == 0)
1060     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1061   if ((opj_encode(jp2_codec,jp2_stream) == 0) ||
1062       (opj_end_compress(jp2_codec,jp2_stream) == 0))
1063     {
1064       opj_stream_destroy(jp2_stream);
1065       opj_destroy_codec(jp2_codec);
1066       opj_image_destroy(jp2_image);
1067       ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1068     }
1069   /*
1070     Free resources.
1071   */
1072   opj_stream_destroy(jp2_stream);
1073   opj_destroy_codec(jp2_codec);
1074   opj_image_destroy(jp2_image);
1075   (void) CloseBlob(image);
1076   return(MagickTrue);
1077 }
1078 #endif