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 1999-2017 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 == MagickCoreSignature);
 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 == MagickCoreSignature);
 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,
 358         (OPJ_INT32) image->extract_info.x,(OPJ_INT32) image->extract_info.y,
 359         (OPJ_INT32) (image->extract_info.x+(ssize_t) image->columns),
 360         (OPJ_INT32) (image->extract_info.y+(ssize_t) image->rows));
 361       if (jp2_status == 0)
 362         {
 363           opj_stream_destroy(jp2_stream);
 364           opj_destroy_codec(jp2_codec);
 365           opj_image_destroy(jp2_image);
 366           ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 367         }
 368     }
 369    if ((image_info->number_scenes != 0) && (image_info->scene != 0))
 370     jp2_status=opj_get_decoded_tile(jp2_codec,jp2_stream,jp2_image,
 371       (unsigned int) image_info->scene-1);
 372   else
 373     if (image->ping == MagickFalse)
 374       {
 375         jp2_status=opj_decode(jp2_codec,jp2_stream,jp2_image);
 376         if (jp2_status != 0)
 377           jp2_status=opj_end_decompress(jp2_codec,jp2_stream);
 378       }
 379   if (jp2_status == 0)
 380     {
 381       opj_stream_destroy(jp2_stream);
 382       opj_destroy_codec(jp2_codec);
 383       opj_image_destroy(jp2_image);
 384       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 385     }
 386   opj_stream_destroy(jp2_stream);
 387   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 388   {
 389     if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
 390       {
 391         opj_destroy_codec(jp2_codec);
 392         opj_image_destroy(jp2_image);
 393         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
 394       }
 395   }
 396   /*
 397     Convert JP2 image.
 398   */
 399   image->columns=(size_t) jp2_image->comps[0].w;
 400   image->rows=(size_t) jp2_image->comps[0].h;
 401   image->depth=jp2_image->comps[0].prec;
 402   status=SetImageExtent(image,image->columns,image->rows,exception);
 403   if (status == MagickFalse)
 404     return(DestroyImageList(image));
 405   image->compression=JPEG2000Compression;
 406   if (jp2_image->numcomps <= 2)
 407     {
 408       SetImageColorspace(image,GRAYColorspace,exception);
 409       if (jp2_image->numcomps > 1)
 410         image->alpha_trait=BlendPixelTrait;
 411     }
 412   if (jp2_image->numcomps > 3)
 413     image->alpha_trait=BlendPixelTrait;
 414   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 415     if ((jp2_image->comps[i].dx > 1) || (jp2_image->comps[i].dy > 1))
 416       SetImageColorspace(image,YUVColorspace,exception);
 417   if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
 418     {
 419       StringInfo
 420         *profile;
 421
 422       profile=BlobToStringInfo(jp2_image->icc_profile_buf,
 423         jp2_image->icc_profile_len);
 424       if (profile != (StringInfo *) NULL)
 425         SetImageProfile(image,"icc",profile,exception);
 426     }
 427   if (image->ping != MagickFalse)
 428     {
 429       opj_destroy_codec(jp2_codec);
 430       opj_image_destroy(jp2_image);
 431       opj_destroy_cstr_index(&codestream_index);
 432       return(GetFirstImageInList(image));
 433     }
 434   for (y=0; y < (ssize_t) image->rows; y++)
 435   {
 436     register Quantum
 437       *magick_restrict q;
 438
 439     register ssize_t
 440       x;
 441
 442     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 443     if (q == (Quantum *) NULL)
 444       break;
 445     for (x=0; x < (ssize_t) image->columns; x++)
 446     {
 447       register ssize_t
 448         i;
 449
 450       for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 451       {
 452         double
 453           pixel,
 454           scale;
 455
 456         scale=QuantumRange/(double) ((1UL << jp2_image->comps[i].prec)-1);
 457         pixel=scale*(jp2_image->comps[i].data[y/jp2_image->comps[i].dy*
 458           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx]+
 459           (jp2_image->comps[i].sgnd ? 1UL << (jp2_image->comps[i].prec-1) : 0));
 460         switch (i)
 461         {
 462            case 0:
 463            {
 464              SetPixelRed(image,ClampToQuantum(pixel),q);
 465              SetPixelGreen(image,ClampToQuantum(pixel),q);
 466              SetPixelBlue(image,ClampToQuantum(pixel),q);
 467              SetPixelAlpha(image,OpaqueAlpha,q);
 468              break;
 469            }
 470            case 1:
 471            {
 472              if (jp2_image->numcomps == 2)
 473                {
 474                  SetPixelAlpha(image,ClampToQuantum(pixel),q);
 475                  break;
 476                }
 477              SetPixelGreen(image,ClampToQuantum(pixel),q);
 478              break;
 479            }
 480            case 2:
 481            {
 482              SetPixelBlue(image,ClampToQuantum(pixel),q);
 483              break;
 484            }
 485            case 3:
 486            {
 487              SetPixelAlpha(image,ClampToQuantum(pixel),q);
 488              break;
 489            }
 490         }
 491       }
 492       q+=GetPixelChannels(image);
 493     }
 494     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 495       break;
 496     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 497       image->rows);
 498     if (status == MagickFalse)
 499       break;
 500   }
 501   /*
 502     Free resources.
 503   */
 504   opj_destroy_codec(jp2_codec);
 505   opj_image_destroy(jp2_image);
 506   opj_destroy_cstr_index(&codestream_index);
 507   (void) CloseBlob(image);
 508   return(GetFirstImageInList(image));
 509 }
 510 #endif
 511 \f
 512 /*
 513 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 514 %                                                                             %
 515 %                                                                             %
 516 %                                                                             %
 517 %   R e g i s t e r J P 2 I m a g e                                           %
 518 %                                                                             %
 519 %                                                                             %
 520 %                                                                             %
 521 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 522 %
 523 %  RegisterJP2Image() adds attributes for the JP2 image format to the list of
 524 %  supported formats.  The attributes include the image format tag, a method
 525 %  method to read and/or write the format, whether the format supports the
 526 %  saving of more than one frame to the same file or blob, whether the format
 527 %  supports native in-memory I/O, and a brief description of the format.
 528 %
 529 %  The format of the RegisterJP2Image method is:
 530 %
 531 %      size_t RegisterJP2Image(void)
 532 %
 533 */
 534 ModuleExport size_t RegisterJP2Image(void)
 535 {
 536   char
 537     version[MagickPathExtent];
 538
 539   MagickInfo
 540     *entry;
 541
 542   *version='\0';
 543 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 544   (void) FormatLocaleString(version,MagickPathExtent,"%s",opj_version());
 545 #endif
 546   entry=AcquireMagickInfo("JP2","JP2","JPEG-2000 File Format Syntax");
 547   if (*version != '\0')
 548     entry->version=ConstantString(version);
 549   entry->mime_type=ConstantString("image/jp2");
 550   entry->magick=(IsImageFormatHandler *) IsJP2;
 551   entry->flags^=CoderAdjoinFlag;
 552   entry->flags|=CoderSeekableStreamFlag;
 553 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 554   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 555   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 556 #endif
 557   (void) RegisterMagickInfo(entry);
 558   entry=AcquireMagickInfo("JP2","J2C","JPEG-2000 Code Stream Syntax");
 559   if (*version != '\0')
 560     entry->version=ConstantString(version);
 561   entry->mime_type=ConstantString("image/jp2");
 562   entry->magick=(IsImageFormatHandler *) IsJ2K;
 563   entry->flags^=CoderAdjoinFlag;
 564   entry->flags|=CoderSeekableStreamFlag;
 565 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 566   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 567   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 568 #endif
 569   (void) RegisterMagickInfo(entry);
 570   entry=AcquireMagickInfo("JP2","J2K","JPEG-2000 Code Stream Syntax");
 571   if (*version != '\0')
 572     entry->version=ConstantString(version);
 573   entry->mime_type=ConstantString("image/jp2");
 574   entry->magick=(IsImageFormatHandler *) IsJ2K;
 575   entry->flags^=CoderAdjoinFlag;
 576   entry->flags|=CoderSeekableStreamFlag;
 577 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 578   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 579   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 580 #endif
 581   (void) RegisterMagickInfo(entry);
 582   entry=AcquireMagickInfo("JP2","JPM","JPEG-2000 File Format Syntax");
 583   if (*version != '\0')
 584     entry->version=ConstantString(version);
 585   entry->mime_type=ConstantString("image/jp2");
 586   entry->magick=(IsImageFormatHandler *) IsJP2;
 587   entry->flags^=CoderAdjoinFlag;
 588   entry->flags|=CoderSeekableStreamFlag;
 589 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 590   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 591   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 592 #endif
 593   (void) RegisterMagickInfo(entry);
 594   entry=AcquireMagickInfo("JP2","JPT","JPEG-2000 File Format Syntax");
 595   if (*version != '\0')
 596     entry->version=ConstantString(version);
 597   entry->mime_type=ConstantString("image/jp2");
 598   entry->magick=(IsImageFormatHandler *) IsJP2;
 599   entry->flags^=CoderAdjoinFlag;
 600   entry->flags|=CoderSeekableStreamFlag;
 601 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 602   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 603   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 604 #endif
 605   (void) RegisterMagickInfo(entry);
 606   entry=AcquireMagickInfo("JP2","JPC","JPEG-2000 Code Stream Syntax");
 607   if (*version != '\0')
 608     entry->version=ConstantString(version);
 609   entry->mime_type=ConstantString("image/jp2");
 610   entry->magick=(IsImageFormatHandler *) IsJP2;
 611   entry->flags^=CoderAdjoinFlag;
 612   entry->flags|=CoderSeekableStreamFlag;
 613 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 614   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 615   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 616 #endif
 617   (void) RegisterMagickInfo(entry);
 618   return(MagickImageCoderSignature);
 619 }
 620 \f
 621 /*
 622 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 623 %                                                                             %
 624 %                                                                             %
 625 %                                                                             %
 626 %   U n r e g i s t e r J P 2 I m a g e                                       %
 627 %                                                                             %
 628 %                                                                             %
 629 %                                                                             %
 630 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 631 %
 632 %  UnregisterJP2Image() removes format registrations made by the JP2 module
 633 %  from the list of supported formats.
 634 %
 635 %  The format of the UnregisterJP2Image method is:
 636 %
 637 %      UnregisterJP2Image(void)
 638 %
 639 */
 640 ModuleExport void UnregisterJP2Image(void)
 641 {
 642   (void) UnregisterMagickInfo("JPC");
 643   (void) UnregisterMagickInfo("JPT");
 644   (void) UnregisterMagickInfo("JPM");
 645   (void) UnregisterMagickInfo("JP2");
 646   (void) UnregisterMagickInfo("J2K");
 647 }
 648 \f
 649 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 650 /*
 651 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 652 %                                                                             %
 653 %                                                                             %
 654 %                                                                             %
 655 %   W r i t e J P 2 I m a g e                                                 %
 656 %                                                                             %
 657 %                                                                             %
 658 %                                                                             %
 659 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 660 %
 661 %  WriteJP2Image() writes an image in the JPEG 2000 image format.
 662 %
 663 %  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
 664 %
 665 %  The format of the WriteJP2Image method is:
 666 %
 667 %      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 668 %        ExceptionInfo *exception)
 669 %
 670 %  A description of each parameter follows.
 671 %
 672 %    o image_info: the image info.
 673 %
 674 %    o image:  The image.
 675 %
 676 */
 677
 678 static void CinemaProfileCompliance(const opj_image_t *jp2_image,
 679   opj_cparameters_t *parameters)
 680 {
 681   /*
 682     Digital Cinema 4K profile compliant codestream.
 683   */
 684   parameters->tile_size_on=OPJ_FALSE;
 685   parameters->cp_tdx=1;
 686   parameters->cp_tdy=1;
 687   parameters->tp_flag='C';
 688   parameters->tp_on=1;
 689   parameters->cp_tx0=0;
 690   parameters->cp_ty0=0;
 691   parameters->image_offset_x0=0;
 692   parameters->image_offset_y0=0;
 693   parameters->cblockw_init=32;
 694   parameters->cblockh_init=32;
 695   parameters->csty|=0x01;
 696   parameters->prog_order=OPJ_CPRL;
 697   parameters->roi_compno=(-1);
 698   parameters->subsampling_dx=1;
 699   parameters->subsampling_dy=1;
 700   parameters->irreversible=1;
 701   if ((jp2_image->comps[0].w == 2048) || (jp2_image->comps[0].h == 1080))
 702     {
 703       /*
 704         Digital Cinema 2K.
 705       */
 706       parameters->cp_cinema=OPJ_CINEMA2K_24;
 707       parameters->cp_rsiz=OPJ_CINEMA2K;
 708       parameters->max_comp_size=1041666;
 709       if (parameters->numresolution > 6)
 710         parameters->numresolution=6;
 711
 712     }
 713   if ((jp2_image->comps[0].w == 4096) || (jp2_image->comps[0].h == 2160))
 714     {
 715       /*
 716         Digital Cinema 4K.
 717       */
 718       parameters->cp_cinema=OPJ_CINEMA4K_24;
 719       parameters->cp_rsiz=OPJ_CINEMA4K;
 720       parameters->max_comp_size=1041666;
 721       if (parameters->numresolution < 1)
 722         parameters->numresolution=1;
 723       if (parameters->numresolution > 7)
 724         parameters->numresolution=7;
 725       parameters->numpocs=2;
 726       parameters->POC[0].tile=1;
 727       parameters->POC[0].resno0=0;
 728       parameters->POC[0].compno0=0;
 729       parameters->POC[0].layno1=1;
 730       parameters->POC[0].resno1=parameters->numresolution-1;
 731       parameters->POC[0].compno1=3;
 732       parameters->POC[0].prg1=OPJ_CPRL;
 733       parameters->POC[1].tile=1;
 734       parameters->POC[1].resno0=parameters->numresolution-1;
 735       parameters->POC[1].compno0=0;
 736       parameters->POC[1].layno1=1;
 737       parameters->POC[1].resno1=parameters->numresolution;
 738       parameters->POC[1].compno1=3;
 739       parameters->POC[1].prg1=OPJ_CPRL;
 740     }
 741   parameters->tcp_numlayers=1;
 742   parameters->tcp_rates[0]=((float) (jp2_image->numcomps*jp2_image->comps[0].w*
 743     jp2_image->comps[0].h*jp2_image->comps[0].prec))/(parameters->max_comp_size*
 744     8*jp2_image->comps[0].dx*jp2_image->comps[0].dy);
 745   parameters->cp_disto_alloc=1;
 746 }
 747
 748 static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 749   ExceptionInfo *exception)
 750 {
 751   const char
 752     *option,
 753     *property;
 754
 755   int
 756     jp2_status;
 757
 758   MagickBooleanType
 759     status;
 760
 761   opj_codec_t
 762     *jp2_codec;
 763
 764   OPJ_COLOR_SPACE
 765     jp2_colorspace;
 766
 767   opj_cparameters_t
 768     parameters;
 769
 770   opj_image_cmptparm_t
 771     jp2_info[5];
 772
 773   opj_image_t
 774     *jp2_image;
 775
 776   opj_stream_t
 777     *jp2_stream;
 778
 779   register ssize_t
 780     i;
 781
 782   ssize_t
 783     y;
 784
 785   unsigned int
 786     channels;
 787
 788   /*
 789     Open image file.
 790   */
 791   assert(image_info != (const ImageInfo *) NULL);
 792   assert(image_info->signature == MagickCoreSignature);
 793   assert(image != (Image *) NULL);
 794   assert(image->signature == MagickCoreSignature);
 795   if (image->debug != MagickFalse)
 796     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 797   assert(exception != (ExceptionInfo *) NULL);
 798   assert(exception->signature == MagickCoreSignature);
 799   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 800   if (status == MagickFalse)
 801     return(status);
 802   /*
 803     Initialize JPEG 2000 API.
 804   */
 805   opj_set_default_encoder_parameters(&parameters);
 806   for (i=1; i < 6; i++)
 807     if (((size_t) (1UL << (i+2)) > image->columns) &&
 808         ((size_t) (1UL << (i+2)) > image->rows))
 809       break;
 810   parameters.numresolution=i;
 811   option=GetImageOption(image_info,"jp2:number-resolutions");
 812   if (option != (const char *) NULL)
 813     parameters.numresolution=StringToInteger(option);
 814   parameters.tcp_numlayers=1;
 815   parameters.tcp_rates[0]=0;  /* lossless */
 816   parameters.cp_disto_alloc=1;
 817   if ((image_info->quality != 0) && (image_info->quality != 100))
 818     {
 819       parameters.tcp_distoratio[0]=(double) image_info->quality;
 820       parameters.cp_fixed_quality=OPJ_TRUE;
 821     }
 822   if (image_info->extract != (char *) NULL)
 823     {
 824       RectangleInfo
 825         geometry;
 826
 827       int
 828         flags;
 829
 830       /*
 831         Set tile size.
 832       */
 833       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 834       parameters.cp_tdx=(int) geometry.width;
 835       parameters.cp_tdy=(int) geometry.width;
 836       if ((flags & HeightValue) != 0)
 837         parameters.cp_tdy=(int) geometry.height;
 838       if ((flags & XValue) != 0)
 839         parameters.cp_tx0=geometry.x;
 840       if ((flags & YValue) != 0)
 841         parameters.cp_ty0=geometry.y;
 842       parameters.tile_size_on=OPJ_TRUE;
 843     }
 844   option=GetImageOption(image_info,"jp2:quality");
 845   if (option != (const char *) NULL)
 846     {
 847       register const char
 848         *p;
 849
 850       /*
 851         Set quality PSNR.
 852       */
 853       p=option;
 854       for (i=0; sscanf(p,"%f",&parameters.tcp_distoratio[i]) == 1; i++)
 855       {
 856         if (i > 100)
 857           break;
 858         while ((*p != '\0') && (*p != ','))
 859           p++;
 860         if (*p == '\0')
 861           break;
 862         p++;
 863       }
 864       parameters.tcp_numlayers=i+1;
 865       parameters.cp_fixed_quality=OPJ_TRUE;
 866     }
 867   option=GetImageOption(image_info,"jp2:progression-order");
 868   if (option != (const char *) NULL)
 869     {
 870       if (LocaleCompare(option,"LRCP") == 0)
 871         parameters.prog_order=OPJ_LRCP;
 872       if (LocaleCompare(option,"RLCP") == 0)
 873         parameters.prog_order=OPJ_RLCP;
 874       if (LocaleCompare(option,"RPCL") == 0)
 875         parameters.prog_order=OPJ_RPCL;
 876       if (LocaleCompare(option,"PCRL") == 0)
 877         parameters.prog_order=OPJ_PCRL;
 878       if (LocaleCompare(option,"CPRL") == 0)
 879         parameters.prog_order=OPJ_CPRL;
 880     }
 881   option=GetImageOption(image_info,"jp2:rate");
 882   if (option != (const char *) NULL)
 883     {
 884       register const char
 885         *p;
 886
 887       /*
 888         Set compression rate.
 889       */
 890       p=option;
 891       for (i=0; sscanf(p,"%f",&parameters.tcp_rates[i]) == 1; i++)
 892       {
 893         if (i >= 100)
 894           break;
 895         while ((*p != '\0') && (*p != ','))
 896           p++;
 897         if (*p == '\0')
 898           break;
 899         p++;
 900       }
 901       parameters.tcp_numlayers=i+1;
 902       parameters.cp_disto_alloc=OPJ_TRUE;
 903     }
 904   if (image_info->sampling_factor != (const char *) NULL)
 905     (void) sscanf(image_info->sampling_factor,"%d,%d",
 906       &parameters.subsampling_dx,&parameters.subsampling_dy);
 907   property=GetImageProperty(image,"comment",exception);
 908   if (property != (const char *) NULL)
 909     parameters.cp_comment=ConstantString(property);
 910   channels=3;
 911   jp2_colorspace=OPJ_CLRSPC_SRGB;
 912   if (image->colorspace == YUVColorspace)
 913     {
 914       jp2_colorspace=OPJ_CLRSPC_SYCC;
 915       parameters.subsampling_dx=2;
 916     }
 917   else
 918     {
 919       if (IsGrayColorspace(image->colorspace) != MagickFalse)
 920         {
 921           channels=1;
 922           jp2_colorspace=OPJ_CLRSPC_GRAY;
 923         }
 924       else
 925         (void) TransformImageColorspace(image,sRGBColorspace,exception);
 926       if (image->alpha_trait != UndefinedPixelTrait)
 927         channels++;
 928     }
 929   parameters.tcp_mct=channels == 3 ? 1 : 0;
 930   ResetMagickMemory(jp2_info,0,sizeof(jp2_info));
 931   for (i=0; i < (ssize_t) channels; i++)
 932   {
 933     jp2_info[i].prec=(OPJ_UINT32) image->depth;
 934     jp2_info[i].bpp=(OPJ_UINT32) image->depth;
 935     if ((image->depth == 1) &&
 936         ((LocaleCompare(image_info->magick,"JPT") == 0) ||
 937          (LocaleCompare(image_info->magick,"JP2") == 0)))
 938       {
 939         jp2_info[i].prec++;  /* OpenJPEG returns exception for depth @ 1 */
 940         jp2_info[i].bpp++;
 941       }
 942     jp2_info[i].sgnd=0;
 943     jp2_info[i].dx=parameters.subsampling_dx;
 944     jp2_info[i].dy=parameters.subsampling_dy;
 945     jp2_info[i].w=(OPJ_UINT32) image->columns;
 946     jp2_info[i].h=(OPJ_UINT32) image->rows;
 947   }
 948   jp2_image=opj_image_create((OPJ_UINT32) channels,jp2_info,jp2_colorspace);
 949   if (jp2_image == (opj_image_t *) NULL)
 950     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
 951   jp2_image->x0=parameters.image_offset_x0;
 952   jp2_image->y0=parameters.image_offset_y0;
 953   jp2_image->x1=(unsigned int) (2*parameters.image_offset_x0+(image->columns-1)*
 954     parameters.subsampling_dx+1);
 955   jp2_image->y1=(unsigned int) (2*parameters.image_offset_y0+(image->rows-1)*
 956     parameters.subsampling_dx+1);
 957   if ((image->depth == 12) &&
 958       ((image->columns == 2048) || (image->rows == 1080) ||
 959        (image->columns == 4096) || (image->rows == 2160)))
 960     CinemaProfileCompliance(jp2_image,&parameters);
 961   if (channels == 4)
 962     jp2_image->comps[3].alpha=1;
 963   else
 964    if ((channels == 2) && (jp2_colorspace == OPJ_CLRSPC_GRAY))
 965      jp2_image->comps[1].alpha=1;
 966   /*
 967     Convert to JP2 pixels.
 968   */
 969   for (y=0; y < (ssize_t) image->rows; y++)
 970   {
 971     register const Quantum
 972       *p;
 973
 974     ssize_t
 975       x;
 976
 977     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 978     if (p == (const Quantum *) NULL)
 979       break;
 980     for (x=0; x < (ssize_t) image->columns; x++)
 981     {
 982       for (i=0; i < (ssize_t) channels; i++)
 983       {
 984         double
 985           scale;
 986
 987         register int
 988           *q;
 989
 990         scale=(double) ((1UL << jp2_image->comps[i].prec)-1)/QuantumRange;
 991         q=jp2_image->comps[i].data+(y/jp2_image->comps[i].dy*
 992           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx);
 993         switch (i)
 994         {
 995           case 0:
 996           {
 997             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
 998               {
 999                 *q=(int) (scale*GetPixelLuma(image,p));
1000                 break;
1001               }
1002             *q=(int) (scale*GetPixelRed(image,p));
1003             break;
1004           }
1005           case 1:
1006           {
1007             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
1008               {
1009                 *q=(int) (scale*GetPixelAlpha(image,p));
1010                 break;
1011               }
1012             *q=(int) (scale*GetPixelGreen(image,p));
1013             break;
1014           }
1015           case 2:
1016           {
1017             *q=(int) (scale*GetPixelBlue(image,p));
1018             break;
1019           }
1020           case 3:
1021           {
1022             *q=(int) (scale*GetPixelAlpha(image,p));
1023             break;
1024           }
1025         }
1026       }
1027       p+=GetPixelChannels(image);
1028     }
1029     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1030       image->rows);
1031     if (status == MagickFalse)
1032       break;
1033   }
1034   if (LocaleCompare(image_info->magick,"JPT") == 0)
1035     jp2_codec=opj_create_compress(OPJ_CODEC_JPT);
1036   else
1037     if (LocaleCompare(image_info->magick,"J2K") == 0)
1038       jp2_codec=opj_create_compress(OPJ_CODEC_J2K);
1039     else
1040       jp2_codec=opj_create_compress(OPJ_CODEC_JP2);
1041   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
1042   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
1043   opj_setup_encoder(jp2_codec,&parameters,jp2_image);
1044   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,OPJ_FALSE);
1045   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
1046   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
1047   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
1048   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
1049   opj_stream_set_user_data(jp2_stream,image,NULL);
1050   if (jp2_stream == (opj_stream_t *) NULL)
1051     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1052   jp2_status=opj_start_compress(jp2_codec,jp2_image,jp2_stream);
1053   if (jp2_status == 0)
1054     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1055   if ((opj_encode(jp2_codec,jp2_stream) == 0) ||
1056       (opj_end_compress(jp2_codec,jp2_stream) == 0))
1057     {
1058       opj_stream_destroy(jp2_stream);
1059       opj_destroy_codec(jp2_codec);
1060       opj_image_destroy(jp2_image);
1061       ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1062     }
1063   /*
1064     Free resources.
1065   */
1066   opj_stream_destroy(jp2_stream);
1067   opj_destroy_codec(jp2_codec);
1068   opj_image_destroy(jp2_image);
1069   (void) CloseBlob(image);
1070   return(MagickTrue);
1071 }
1072 #endif