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/static.h"
  67 #include "MagickCore/statistic.h"
  68 #include "MagickCore/string_.h"
  69 #include "MagickCore/string-private.h"
  70 #include "MagickCore/module.h"
  71 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  72 #include <openjpeg.h>
  73 #endif
  74 \f
  75 /*
  76   Forward declarations.
  77 */
  78 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  79 static MagickBooleanType
  80   WriteJP2Image(const ImageInfo *,Image *,ExceptionInfo *);
  81 #endif
  82 \f
  83 /*
  84 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  85 %                                                                             %
  86 %                                                                             %
  87 %                                                                             %
  88 %   I s J 2 K                                                                 %
  89 %                                                                             %
  90 %                                                                             %
  91 %                                                                             %
  92 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  93 %
  94 %  IsJ2K() returns MagickTrue if the image format type, identified by the
  95 %  magick string, is J2K.
  96 %
  97 %  The format of the IsJ2K method is:
  98 %
  99 %      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 100 %
 101 %  A description of each parameter follows:
 102 %
 103 %    o magick: compare image format pattern against these bytes.
 104 %
 105 %    o length: Specifies the length of the magick string.
 106 %
 107 */
 108 static MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
 109 {
 110   if (length < 4)
 111     return(MagickFalse);
 112   if (memcmp(magick,"\xff\x4f\xff\x51",4) == 0)
 113     return(MagickTrue);
 114   return(MagickFalse);
 115 }
 116 \f
 117 /*
 118 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 119 %                                                                             %
 120 %                                                                             %
 121 %                                                                             %
 122 %   I s J P 2                                                                 %
 123 %                                                                             %
 124 %                                                                             %
 125 %                                                                             %
 126 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 127 %
 128 %  IsJP2() returns MagickTrue if the image format type, identified by the
 129 %  magick string, is JP2.
 130 %
 131 %  The format of the IsJP2 method is:
 132 %
 133 %      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 134 %
 135 %  A description of each parameter follows:
 136 %
 137 %    o magick: compare image format pattern against these bytes.
 138 %
 139 %    o length: Specifies the length of the magick string.
 140 %
 141 */
 142 static MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 143 {
 144   if (length < 12)
 145     return(MagickFalse);
 146   if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
 147     return(MagickTrue);
 148   if (memcmp(magick,"\x0d\x0a\x87\x0a",12) == 0)
 149     return(MagickTrue);
 150   return(MagickFalse);
 151 }
 152 \f
 153 /*
 154 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 155 %                                                                             %
 156 %                                                                             %
 157 %                                                                             %
 158 %   I s J P C                                                                 %
 159 %                                                                             %
 160 %                                                                             %
 161 %                                                                             %
 162 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 163 %
 164 %  IsJPC()() returns MagickTrue if the image format type, identified by the
 165 %  magick string, is JPC.
 166 %
 167 %  The format of the IsJPC method is:
 168 %
 169 %      MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
 170 %
 171 %  A description of each parameter follows:
 172 %
 173 %    o magick: compare image format pattern against these bytes.
 174 %
 175 %    o length: Specifies the length of the magick string.
 176 %
 177 */
 178 static MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
 179 {
 180   if (length < 12)
 181     return(MagickFalse);
 182   if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
 183     return(MagickTrue);
 184   if (memcmp(magick,"\x0d\x0a\x87\x0a",12) == 0)
 185     return(MagickTrue);
 186   return(MagickFalse);
 187 }
 188 \f
 189 /*
 190 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 191 %                                                                             %
 192 %                                                                             %
 193 %                                                                             %
 194 %   R e a d J P 2 I m a g e                                                   %
 195 %                                                                             %
 196 %                                                                             %
 197 %                                                                             %
 198 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 199 %
 200 %  ReadJP2Image() reads a JPEG 2000 Image file (JP2) or JPEG 2000
 201 %  codestream (JPC) image file and returns it.  It allocates the memory
 202 %  necessary for the new Image structure and returns a pointer to the new
 203 %  image or set of images.
 204 %
 205 %  JP2 support is originally written by Nathan Brown, nathanbrown@letu.edu.
 206 %
 207 %  The format of the ReadJP2Image method is:
 208 %
 209 %      Image *ReadJP2Image(const ImageInfo *image_info,
 210 %        ExceptionInfo *exception)
 211 %
 212 %  A description of each parameter follows:
 213 %
 214 %    o image_info: the image info.
 215 %
 216 %    o exception: return any errors or warnings in this structure.
 217 %
 218 */
 219 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 220 static void JP2ErrorHandler(const char *message,void *client_data)
 221 {
 222   ExceptionInfo
 223     *exception;
 224
 225   exception=(ExceptionInfo *) client_data;
 226   (void) ThrowMagickException(exception,GetMagickModule(),CoderError,
 227     message,"`%s'","OpenJP2");
 228 }
 229
 230 static OPJ_SIZE_T JP2ReadHandler(void *buffer,OPJ_SIZE_T length,void *context)
 231 {
 232   Image
 233     *image;
 234
 235   ssize_t
 236     count;
 237
 238   image=(Image *) context;
 239   count=ReadBlob(image,(ssize_t) length,(unsigned char *) buffer);
 240   if (count == 0)
 241     return(-1);
 242   return((OPJ_SIZE_T) count);
 243 }
 244
 245 static OPJ_BOOL JP2SeekHandler(OPJ_OFF_T offset,void *context)
 246 {
 247   Image
 248     *image;
 249
 250   image=(Image *) context;
 251   return(SeekBlob(image,offset,SEEK_SET) < 0 ? 0 : 1);
 252 }
 253
 254 static OPJ_OFF_T JP2SkipHandler(OPJ_OFF_T offset,void *context)
 255 {
 256   Image
 257     *image;
 258
 259   image=(Image *) context;
 260   return(SeekBlob(image,offset,SEEK_CUR) < 0 ? 0 : offset);
 261 }
 262
 263 static void JP2WarningHandler(const char *message,void *client_data)
 264 {
 265   ExceptionInfo
 266     *exception;
 267
 268   exception=(ExceptionInfo *) client_data;
 269   (void) ThrowMagickException(exception,GetMagickModule(),CoderWarning,
 270     message,"`%s'","OpenJP2");
 271 }
 272
 273 static OPJ_SIZE_T JP2WriteHandler(void *buffer,OPJ_SIZE_T length,void *context)
 274 {
 275   Image
 276     *image;
 277
 278   ssize_t
 279     count;
 280
 281   image=(Image *) context;
 282   count=WriteBlob(image,(ssize_t) length,(unsigned char *) buffer);
 283   return((OPJ_SIZE_T) count);
 284 }
 285
 286 static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
 287 {
 288   const char
 289     *option;
 290
 291   Image
 292     *image;
 293
 294   int
 295     jp2_status;
 296
 297   MagickBooleanType
 298     status;
 299
 300   opj_codec_t
 301     *jp2_codec;
 302
 303   opj_codestream_index_t
 304     *codestream_index = (opj_codestream_index_t *) NULL;
 305
 306   opj_dparameters_t
 307     parameters;
 308
 309   opj_image_t
 310     *jp2_image;
 311
 312   opj_stream_t
 313     *jp2_stream;
 314
 315   register ssize_t
 316     i;
 317
 318   ssize_t
 319     y;
 320
 321   /*
 322     Open image file.
 323   */
 324   assert(image_info != (const ImageInfo *) NULL);
 325   assert(image_info->signature == MagickSignature);
 326   if (image_info->debug != MagickFalse)
 327     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 328       image_info->filename);
 329   assert(exception != (ExceptionInfo *) NULL);
 330   assert(exception->signature == MagickSignature);
 331   image=AcquireImage(image_info,exception);
 332   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 333   if (status == MagickFalse)
 334     {
 335       image=DestroyImageList(image);
 336       return((Image *) NULL);
 337     }
 338   /*
 339     Initialize JP2 codec.
 340   */
 341   if (LocaleCompare(image_info->magick,"JPT") == 0)
 342     jp2_codec=opj_create_decompress(OPJ_CODEC_JPT);
 343   else
 344     if (LocaleCompare(image_info->magick,"J2K") == 0)
 345       jp2_codec=opj_create_decompress(OPJ_CODEC_J2K);
 346     else
 347       jp2_codec=opj_create_decompress(OPJ_CODEC_JP2);
 348   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
 349   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
 350   opj_set_default_decoder_parameters(&parameters);
 351   option=GetImageOption(image_info,"jp2:reduce-factor");
 352   if (option != (const char *) NULL)
 353     parameters.cp_reduce=StringToInteger(option);
 354   option=GetImageOption(image_info,"jp2:quality-layers");
 355   if (option != (const char *) NULL)
 356     parameters.cp_layer=StringToInteger(option);
 357   if (opj_setup_decoder(jp2_codec,&parameters) == 0)
 358     {
 359       opj_destroy_codec(jp2_codec);
 360       ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
 361     }
 362   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,1);
 363   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
 364   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
 365   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
 366   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
 367   opj_stream_set_user_data(jp2_stream,image);
 368   opj_stream_set_user_data_length(jp2_stream,GetBlobSize(image));
 369   if (opj_read_header(jp2_stream,jp2_codec,&jp2_image) == 0)
 370     {
 371       opj_stream_set_user_data(jp2_stream,NULL);
 372       opj_stream_destroy_v3(jp2_stream);
 373       opj_destroy_codec(jp2_codec);
 374       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 375     }
 376   if ((image->columns != 0) && (image->rows != 0))
 377     {
 378       /*
 379         Extract an area from the image.
 380       */
 381       jp2_status=opj_set_decode_area(jp2_codec,jp2_image,image->extract_info.x,
 382         image->extract_info.y,image->extract_info.x+image->columns,
 383         image->extract_info.y+image->rows);
 384       if (jp2_status == 0)
 385         {
 386           opj_stream_set_user_data(jp2_stream,NULL);
 387           opj_stream_destroy_v3(jp2_stream);
 388           opj_destroy_codec(jp2_codec);
 389           opj_image_destroy(jp2_image);
 390           ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 391         }
 392     }
 393   if ((opj_decode(jp2_codec,jp2_stream,jp2_image) == 0) ||
 394       (opj_end_decompress(jp2_codec,jp2_stream) == 0))
 395     {
 396       opj_stream_set_user_data(jp2_stream,NULL);
 397       opj_stream_destroy_v3(jp2_stream);
 398       opj_destroy_codec(jp2_codec);
 399       opj_image_destroy(jp2_image);
 400       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 401     }
 402   opj_stream_set_user_data(jp2_stream,NULL);
 403   opj_stream_destroy_v3(jp2_stream);
 404   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 405   {
 406     if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
 407       {
 408         opj_stream_set_user_data(jp2_stream,NULL);
 409         opj_destroy_codec(jp2_codec);
 410         opj_image_destroy(jp2_image);
 411         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
 412       }
 413   }
 414   /*
 415     Convert JP2 image.
 416   */
 417   image->columns=(size_t) jp2_image->comps[0].w;
 418   image->rows=(size_t) jp2_image->comps[0].h;
 419   image->depth=jp2_image->comps[0].prec;
 420   image->compression=JPEG2000Compression;
 421   if (jp2_image->numcomps <= 2)
 422     {
 423       SetImageColorspace(image,GRAYColorspace,exception);
 424       if (jp2_image->numcomps > 1)
 425         image->alpha_trait=BlendPixelTrait;
 426     }
 427   if (jp2_image->numcomps > 3)
 428     image->alpha_trait=BlendPixelTrait;
 429   for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 430   {
 431     if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
 432       {
 433         opj_stream_set_user_data(jp2_stream,NULL);
 434         opj_destroy_codec(jp2_codec);
 435         opj_image_destroy(jp2_image);
 436         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
 437       }
 438     if ((jp2_image->comps[i].dx > 1) || (jp2_image->comps[i].dy > 1))
 439       image->colorspace=YUVColorspace;
 440   }
 441   if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
 442     {
 443       StringInfo
 444         *profile;
 445
 446       profile=BlobToStringInfo(jp2_image->icc_profile_buf,
 447         jp2_image->icc_profile_len);
 448       if (profile != (StringInfo *) NULL)
 449         SetImageProfile(image,"icc",profile,exception);
 450     }
 451   for (y=0; y < (ssize_t) image->rows; y++)
 452   {
 453     register Quantum
 454       *restrict q;
 455
 456     register ssize_t
 457       x;
 458
 459     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 460     if (q == (Quantum *) NULL)
 461       break;
 462     for (x=0; x < (ssize_t) image->columns; x++)
 463     {
 464       register ssize_t
 465         i;
 466
 467       for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
 468       {
 469         double
 470           pixel,
 471           scale;
 472
 473         scale=QuantumRange/(double) ((1UL << jp2_image->comps[i].prec)-1);
 474         pixel=scale*(jp2_image->comps[i].data[y/jp2_image->comps[i].dy*
 475           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx]+
 476           (jp2_image->comps[i].sgnd ? 1UL << (jp2_image->comps[i].prec-1) : 0));
 477         switch (i)
 478         {
 479            case 0:
 480            {
 481              SetPixelRed(image,ClampToQuantum(pixel),q);
 482              SetPixelGreen(image,ClampToQuantum(pixel),q);
 483              SetPixelBlue(image,ClampToQuantum(pixel),q);
 484              SetPixelAlpha(image,OpaqueAlpha,q);
 485              break;
 486            }
 487            case 1:
 488            {
 489              if (jp2_image->numcomps == 2)
 490                {
 491                  SetPixelAlpha(image,ClampToQuantum(pixel),q);
 492                  break;
 493                }
 494              SetPixelGreen(image,ClampToQuantum(pixel),q);
 495              break;
 496            }
 497            case 2:
 498            {
 499              SetPixelBlue(image,ClampToQuantum(pixel),q);
 500              break;
 501            }
 502            case 3:
 503            {
 504              SetPixelAlpha(image,ClampToQuantum(pixel),q);
 505              break;
 506            }
 507         }
 508       }
 509       q+=GetPixelChannels(image);
 510     }
 511     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 512       break;
 513     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 514       image->rows);
 515     if (status == MagickFalse)
 516       break;
 517   }
 518   /*
 519     Free resources.
 520   */
 521   opj_destroy_codec(jp2_codec);
 522   opj_image_destroy(jp2_image);
 523   opj_destroy_cstr_index(&codestream_index);
 524   return(GetFirstImageInList(image));
 525 }
 526 #endif
 527 \f
 528 /*
 529 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 530 %                                                                             %
 531 %                                                                             %
 532 %                                                                             %
 533 %   R e g i s t e r J P 2 I m a g e                                           %
 534 %                                                                             %
 535 %                                                                             %
 536 %                                                                             %
 537 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 538 %
 539 %  RegisterJP2Image() adds attributes for the JP2 image format to the list of
 540 %  supported formats.  The attributes include the image format tag, a method
 541 %  method to read and/or write the format, whether the format supports the
 542 %  saving of more than one frame to the same file or blob, whether the format
 543 %  supports native in-memory I/O, and a brief description of the format.
 544 %
 545 %  The format of the RegisterJP2Image method is:
 546 %
 547 %      size_t RegisterJP2Image(void)
 548 %
 549 */
 550 ModuleExport size_t RegisterJP2Image(void)
 551 {
 552   char
 553     version[MaxTextExtent];
 554
 555   MagickInfo
 556     *entry;
 557
 558   *version='\0';
 559 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 560   (void) FormatLocaleString(version,MaxTextExtent,"%s",opj_version());
 561 #endif
 562   entry=SetMagickInfo("JP2");
 563   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 564   if (*version != '\0')
 565     entry->version=ConstantString(version);
 566   entry->mime_type=ConstantString("image/jp2");
 567   entry->module=ConstantString("JP2");
 568   entry->magick=(IsImageFormatHandler *) IsJP2;
 569   entry->adjoin=MagickFalse;
 570   entry->seekable_stream=MagickTrue;
 571   entry->thread_support=NoThreadSupport;
 572 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 573   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 574   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 575 #endif
 576   (void) RegisterMagickInfo(entry);
 577   entry=SetMagickInfo("J2K");
 578   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 579   if (*version != '\0')
 580     entry->version=ConstantString(version);
 581   entry->mime_type=ConstantString("image/jp2");
 582   entry->module=ConstantString("JP2");
 583   entry->magick=(IsImageFormatHandler *) IsJ2K;
 584   entry->adjoin=MagickFalse;
 585   entry->seekable_stream=MagickTrue;
 586   entry->thread_support=NoThreadSupport;
 587 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 588   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 589   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 590 #endif
 591   (void) RegisterMagickInfo(entry);
 592   entry=SetMagickInfo("JPT");
 593   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 594   if (*version != '\0')
 595     entry->version=ConstantString(version);
 596   entry->mime_type=ConstantString("image/jp2");
 597   entry->module=ConstantString("JP2");
 598   entry->magick=(IsImageFormatHandler *) IsJP2;
 599   entry->adjoin=MagickFalse;
 600   entry->seekable_stream=MagickTrue;
 601   entry->thread_support=NoThreadSupport;
 602 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 603   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 604   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 605 #endif
 606   (void) RegisterMagickInfo(entry);
 607   entry=SetMagickInfo("JPC");
 608   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 609   if (*version != '\0')
 610     entry->version=ConstantString(version);
 611   entry->mime_type=ConstantString("image/jp2");
 612   entry->module=ConstantString("JP2");
 613   entry->magick=(IsImageFormatHandler *) IsJPC;
 614   entry->adjoin=MagickFalse;
 615   entry->seekable_stream=MagickTrue;
 616   entry->thread_support=NoThreadSupport;
 617 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 618   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 619   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 620 #endif
 621   (void) RegisterMagickInfo(entry);
 622   return(MagickImageCoderSignature);
 623 }
 624 \f
 625 /*
 626 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 627 %                                                                             %
 628 %                                                                             %
 629 %                                                                             %
 630 %   U n r e g i s t e r J P 2 I m a g e                                       %
 631 %                                                                             %
 632 %                                                                             %
 633 %                                                                             %
 634 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 635 %
 636 %  UnregisterJP2Image() removes format registrations made by the JP2 module
 637 %  from the list of supported formats.
 638 %
 639 %  The format of the UnregisterJP2Image method is:
 640 %
 641 %      UnregisterJP2Image(void)
 642 %
 643 */
 644 ModuleExport void UnregisterJP2Image(void)
 645 {
 646   (void) UnregisterMagickInfo("JPC");
 647   (void) UnregisterMagickInfo("JPT");
 648   (void) UnregisterMagickInfo("JP2");
 649   (void) UnregisterMagickInfo("J2K");
 650 }
 651 \f
 652 #if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
 653 /*
 654 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 655 %                                                                             %
 656 %                                                                             %
 657 %                                                                             %
 658 %   W r i t e J P 2 I m a g e                                                 %
 659 %                                                                             %
 660 %                                                                             %
 661 %                                                                             %
 662 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 663 %
 664 %  WriteJP2Image() writes an image in the JPEG 2000 image format.
 665 %
 666 %  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
 667 %
 668 %  The format of the WriteJP2Image method is:
 669 %
 670 %      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 671 %        ExceptionInfo *exception)
 672 %
 673 %  A description of each parameter follows.
 674 %
 675 %    o image_info: the image info.
 676 %
 677 %    o image:  The image.
 678 %
 679 */
 680
 681 static void CinemaProfileCompliance(const opj_image_t *jp2_image,
 682   opj_cparameters_t *parameters)
 683 {
 684   /*
 685     Digital Cinema 4K profile compliant codestream.
 686   */
 687   parameters->tile_size_on=OPJ_FALSE;
 688   parameters->cp_tdx=1;
 689   parameters->cp_tdy=1;
 690   parameters->tp_flag='C';
 691   parameters->tp_on=1;
 692   parameters->cp_tx0=0;
 693   parameters->cp_ty0=0;
 694   parameters->image_offset_x0=0;
 695   parameters->image_offset_y0=0;
 696   parameters->cblockw_init=32;
 697   parameters->cblockh_init=32;
 698   parameters->csty|=0x01;
 699   parameters->prog_order=OPJ_CPRL;
 700   parameters->roi_compno=(-1);
 701   parameters->subsampling_dx=1;
 702   parameters->subsampling_dy=1;
 703   parameters->irreversible=1;
 704   if ((jp2_image->comps[0].w == 2048) || (jp2_image->comps[0].h == 1080))
 705     {
 706       /*
 707         Digital Cinema 2K.
 708       */
 709       parameters->cp_cinema=OPJ_CINEMA2K_24;
 710       parameters->cp_rsiz=OPJ_CINEMA2K;
 711       parameters->max_comp_size=1041666;
 712       if (parameters->numresolution > 6)
 713         parameters->numresolution=6;
 714
 715     }
 716   if ((jp2_image->comps[0].w == 4096) || (jp2_image->comps[0].h == 2160))
 717     {
 718       /*
 719         Digital Cinema 4K.
 720       */
 721       parameters->cp_cinema=OPJ_CINEMA4K_24;
 722       parameters->cp_rsiz=OPJ_CINEMA4K;
 723       parameters->max_comp_size=1041666;
 724       if (parameters->numresolution < 1)
 725         parameters->numresolution=1;
 726       if (parameters->numresolution > 7)
 727         parameters->numresolution=7;
 728       parameters->numpocs=2;
 729       parameters->POC[0].tile=1;
 730       parameters->POC[0].resno0=0;
 731       parameters->POC[0].compno0=0;
 732       parameters->POC[0].layno1=1;
 733       parameters->POC[0].resno1=parameters->numresolution-1;
 734       parameters->POC[0].compno1=3;
 735       parameters->POC[0].prg1=OPJ_CPRL;
 736       parameters->POC[1].tile=1;
 737       parameters->POC[1].resno0=parameters->numresolution-1;
 738       parameters->POC[1].compno0=0;
 739       parameters->POC[1].layno1=1;
 740       parameters->POC[1].resno1=parameters->numresolution;
 741       parameters->POC[1].compno1=3;
 742       parameters->POC[1].prg1=OPJ_CPRL;
 743     }
 744   parameters->tcp_numlayers=1;
 745   parameters->tcp_rates[0]=((float) (jp2_image->numcomps*jp2_image->comps[0].w*
 746     jp2_image->comps[0].h*jp2_image->comps[0].prec))/(parameters->max_comp_size*
 747     8*jp2_image->comps[0].dx*jp2_image->comps[0].dy);
 748   parameters->cp_disto_alloc=1;
 749 }
 750
 751 static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 752   ExceptionInfo *exception)
 753 {
 754   const char
 755     *option,
 756     *property;
 757
 758   int
 759     jp2_status;
 760
 761   MagickBooleanType
 762     status;
 763
 764   opj_codec_t
 765     *jp2_codec;
 766
 767   OPJ_COLOR_SPACE
 768     jp2_colorspace;
 769
 770   opj_cparameters_t
 771     parameters;
 772
 773   opj_image_cmptparm_t
 774     jp2_info[5];
 775
 776   opj_image_t
 777     *jp2_image;
 778
 779   opj_stream_t
 780     *jp2_stream;
 781
 782   register ssize_t
 783     i;
 784
 785   ssize_t
 786     y;
 787
 788   size_t
 789     channels;
 790
 791   /*
 792     Open image file.
 793   */
 794   assert(image_info != (const ImageInfo *) NULL);
 795   assert(image_info->signature == MagickSignature);
 796   assert(image != (Image *) NULL);
 797   assert(image->signature == MagickSignature);
 798   if (image->debug != MagickFalse)
 799     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 800   assert(exception != (ExceptionInfo *) NULL);
 801   assert(exception->signature == MagickSignature);
 802   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 803   if (status == MagickFalse)
 804     return(status);
 805   /*
 806     Initialize JPEG 2000 API.
 807   */
 808   opj_set_default_encoder_parameters(&parameters);
 809   for (i=1; i < 6; i++)
 810     if (((1UL << (i+2)) > image->columns) && ((1UL << (i+2)) > image->rows))
 811       break;
 812   parameters.numresolution=i;
 813   option=GetImageOption(image_info,"jp2:number-resolutions");
 814   if (option != (const char *) NULL)
 815     parameters.numresolution=StringToInteger(option);
 816   parameters.tcp_numlayers=1;
 817   parameters.tcp_rates[0]=0;  /* lossless */
 818   parameters.cp_disto_alloc=1;
 819   if (image->quality != 0)
 820     {
 821       parameters.tcp_distoratio[0]=(double) image->quality;
 822       parameters.cp_fixed_quality=OPJ_TRUE;
 823     }
 824   if (image_info->extract != (char *) NULL)
 825     {
 826       RectangleInfo
 827         geometry;
 828
 829       int
 830         flags;
 831
 832       /*
 833         Set tile size.
 834       */
 835       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 836       parameters.cp_tdx=geometry.width;
 837       parameters.cp_tdy=geometry.width;
 838       if ((flags & HeightValue) != 0)
 839         parameters.cp_tdy=geometry.height;
 840       if ((flags & XValue) != 0)
 841         parameters.cp_tx0=geometry.x;
 842       if ((flags & YValue) != 0)
 843         parameters.cp_ty0=geometry.y;
 844       parameters.tile_size_on=OPJ_TRUE;
 845     }
 846   option=GetImageOption(image_info,"jp2:quality");
 847   if (option != (const char *) NULL)
 848     {
 849       register const char
 850         *p;
 851
 852       /*
 853         Set quality PSNR.
 854       */
 855       p=option;
 856       for (i=1; sscanf(p,"%f",&parameters.tcp_distoratio[i]) == 1; i++)
 857       {
 858         if (i > 100)
 859           break;
 860         while ((*p != '\0') && (*p != ','))
 861           p++;
 862         if (*p == '\0')
 863           break;
 864         p++;
 865       }
 866       parameters.tcp_numlayers=i;
 867       parameters.cp_fixed_quality=OPJ_TRUE;
 868     }
 869   option=GetImageOption(image_info,"jp2:progression-order");
 870   if (option != (const char *) NULL)
 871     {
 872       if (LocaleCompare(option,"LRCP") == 0)
 873         parameters.prog_order=OPJ_LRCP;
 874       if (LocaleCompare(option,"RLCP") == 0)
 875         parameters.prog_order=OPJ_RLCP;
 876       if (LocaleCompare(option,"RPCL") == 0)
 877         parameters.prog_order=OPJ_RPCL;
 878       if (LocaleCompare(option,"PCRL") == 0)
 879         parameters.prog_order=OPJ_PCRL;
 880       if (LocaleCompare(option,"CPRL") == 0)
 881         parameters.prog_order=OPJ_CPRL;
 882     }
 883   option=GetImageOption(image_info,"jp2:rate");
 884   if (option != (const char *) NULL)
 885     {
 886       register const char
 887         *p;
 888
 889       /*
 890         Set compression rate.
 891       */
 892       p=option;
 893       for (i=1; sscanf(p,"%f",&parameters.tcp_rates[i]) == 1; i++)
 894       {
 895         if (i > 100)
 896           break;
 897         while ((*p != '\0') && (*p != ','))
 898           p++;
 899         if (*p == '\0')
 900           break;
 901         p++;
 902       }
 903       parameters.tcp_numlayers=i;
 904       parameters.cp_disto_alloc=OPJ_TRUE;
 905     }
 906   if (image_info->sampling_factor != (const char *) NULL)
 907     (void) sscanf(image_info->sampling_factor,"%d,%d",
 908       &parameters.subsampling_dx,&parameters.subsampling_dy);
 909   property=GetImageProperty(image,"comment",exception);
 910   if (property != (const char *) NULL)
 911     parameters.cp_comment=ConstantString(property);
 912   channels=3;
 913   jp2_colorspace=OPJ_CLRSPC_SRGB;
 914   if (image->colorspace == YUVColorspace)
 915     {
 916       jp2_colorspace=OPJ_CLRSPC_SYCC;
 917       parameters.subsampling_dx=2;
 918     }
 919   else
 920     {
 921       if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
 922         (void) TransformImageColorspace(image,sRGBColorspace,exception);
 923       if (IsGrayColorspace(image->colorspace) != MagickFalse)
 924         {
 925           channels=1;
 926           jp2_colorspace=OPJ_CLRSPC_GRAY;
 927         }
 928       if (image->alpha_trait == BlendPixelTrait)
 929         channels++;
 930     }
 931   parameters.tcp_mct=channels == 3 ? 1 : 0;
 932   ResetMagickMemory(jp2_info,0,sizeof(jp2_info));
 933   for (i=0; i < (ssize_t) channels; i++)
 934   {
 935     jp2_info[i].prec=image->depth;
 936     jp2_info[i].bpp=image->depth;
 937     if ((image->depth == 1) &&
 938         ((LocaleCompare(image_info->magick,"JPT") == 0) ||
 939          (LocaleCompare(image_info->magick,"JP2") == 0)))
 940       {
 941         jp2_info[i].prec++;  /* OpenJPEG returns exception for depth @ 1 */
 942         jp2_info[i].bpp++;
 943       }
 944     jp2_info[i].sgnd=0;
 945     jp2_info[i].dx=parameters.subsampling_dx;
 946     jp2_info[i].dy=parameters.subsampling_dy;
 947     jp2_info[i].w=image->columns;
 948     jp2_info[i].h=image->rows;
 949   }
 950   jp2_image=opj_image_create(channels,jp2_info,jp2_colorspace);
 951   if (jp2_image == (opj_image_t *) NULL)
 952     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
 953   jp2_image->x0=parameters.image_offset_x0;
 954   jp2_image->y0=parameters.image_offset_y0;
 955   jp2_image->x1=2*parameters.image_offset_x0+(image->columns-1)*
 956     parameters.subsampling_dx+1;
 957   jp2_image->y1=2*parameters.image_offset_y0+(image->rows-1)*
 958     parameters.subsampling_dx+1;
 959   if ((image->depth == 12) &&
 960       ((image->columns == 2048) || (image->rows == 1080) ||
 961        (image->columns == 4096) || (image->rows == 2160)))
 962     CinemaProfileCompliance(jp2_image,&parameters);
 963   /*
 964     Convert to JP2 pixels.
 965   */
 966   for (y=0; y < (ssize_t) image->rows; y++)
 967   {
 968     register const Quantum
 969       *p;
 970
 971     ssize_t
 972       x;
 973
 974     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 975     if (p == (const Quantum *) NULL)
 976       break;
 977     for (x=0; x < (ssize_t) image->columns; x++)
 978     {
 979       for (i=0; i < (ssize_t) channels; i++)
 980       {
 981         double
 982           scale;
 983
 984         register int
 985           *q;
 986
 987         scale=(double) ((1UL << jp2_image->comps[i].prec)-1)/QuantumRange;
 988         q=jp2_image->comps[i].data+(y/jp2_image->comps[i].dy*
 989           image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx);
 990         switch (i)
 991         {
 992           case 0:
 993           {
 994             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
 995               {
 996                 *q=(int) (scale*GetPixelLuma(image,p));
 997                 break;
 998               }
 999             *q=(int) (scale*GetPixelRed(image,p));
1000             break;
1001           }
1002           case 1:
1003           {
1004             if (jp2_colorspace == OPJ_CLRSPC_GRAY)
1005               {
1006                 *q=(int) (scale*GetPixelAlpha(image,p));
1007                 break;
1008               }
1009             *q=(int) (scale*GetPixelGreen(image,p));
1010             break;
1011           }
1012           case 2:
1013           {
1014             *q=(int) (scale*GetPixelBlue(image,p));
1015             break;
1016           }
1017           case 3:
1018           {
1019             *q=(int) (scale*GetPixelAlpha(image,p));
1020             break;
1021           }
1022         }
1023       }
1024       p++;
1025     }
1026     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1027       image->rows);
1028     if (status == MagickFalse)
1029       break;
1030   }
1031   if (LocaleCompare(image_info->magick,"JPT") == 0)
1032     jp2_codec=opj_create_compress(OPJ_CODEC_JPT);
1033   else
1034     if (LocaleCompare(image_info->magick,"J2K") == 0)
1035       jp2_codec=opj_create_compress(OPJ_CODEC_J2K);
1036     else
1037       jp2_codec=opj_create_compress(OPJ_CODEC_JP2);
1038   opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
1039   opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
1040   opj_setup_encoder(jp2_codec,&parameters,jp2_image);
1041   jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,OPJ_FALSE);
1042   opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
1043   opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
1044   opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
1045   opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
1046   opj_stream_set_user_data(jp2_stream,image);
1047   if (jp2_stream == (opj_stream_t *) NULL)
1048     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1049   jp2_status=opj_start_compress(jp2_codec,jp2_image,jp2_stream);
1050   if (jp2_status == 0)
1051     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1052   if ((opj_encode(jp2_codec,jp2_stream) == 0) ||
1053       (opj_end_compress(jp2_codec,jp2_stream) == 0))
1054     {
1055       opj_stream_set_user_data(jp2_stream,NULL);
1056       opj_stream_destroy_v3(jp2_stream);
1057       opj_destroy_codec(jp2_codec);
1058       opj_image_destroy(jp2_image);
1059       ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1060     }
1061   /*
1062     Free resources.
1063   */
1064   opj_stream_set_user_data(jp2_stream,NULL);
1065   opj_stream_destroy_v3(jp2_stream);
1066   opj_destroy_codec(jp2_codec);
1067   opj_image_destroy(jp2_image);
1068   (void) CloseBlob(image);
1069   return(MagickTrue);
1070 }
1071 #endif