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