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 %                                John Cristy                                  %
  16 %                                Nathan Brown                                 %
  17 %                                 June 2001                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2011 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/attribute.h"
  44 #include "MagickCore/blob.h"
  45 #include "MagickCore/blob-private.h"
  46 #include "MagickCore/cache.h"
  47 #include "MagickCore/colorspace.h"
  48 #include "MagickCore/colorspace-private.h"
  49 #include "MagickCore/color.h"
  50 #include "MagickCore/color-private.h"
  51 #include "MagickCore/exception.h"
  52 #include "MagickCore/exception-private.h"
  53 #include "MagickCore/image.h"
  54 #include "MagickCore/image-private.h"
  55 #include "MagickCore/list.h"
  56 #include "MagickCore/magick.h"
  57 #include "MagickCore/memory_.h"
  58 #include "MagickCore/monitor.h"
  59 #include "MagickCore/monitor-private.h"
  60 #include "MagickCore/option.h"
  61 #include "MagickCore/pixel-accessor.h"
  62 #include "MagickCore/profile.h"
  63 #include "MagickCore/quantum-private.h"
  64 #include "MagickCore/static.h"
  65 #include "MagickCore/statistic.h"
  66 #include "MagickCore/string_.h"
  67 #include "MagickCore/module.h"
  68 #if defined(MAGICKCORE_JP2_DELEGATE)
  69 #ifndef JAS_IMAGE_CM_GRAY
  70 #define JAS_IMAGE_CM_GRAY JAS_IMAGE_CS_GRAY
  71 #endif
  72 #ifndef JAS_IMAGE_CM_RGB
  73 #define JAS_IMAGE_CM_RGB JAS_IMAGE_CS_RGB
  74 #endif
  75 #if !defined(uchar)
  76 #define uchar  unsigned char
  77 #endif
  78 #if !defined(ushort)
  79 #define ushort  unsigned short
  80 #endif
  81 #if !defined(uint)
  82 #define uint  unsigned int
  83 #endif
  84 #if !defined(ssize_tssize_t)
  85 #define ssize_tssize_t  long long
  86 #endif
  87 #if !defined(ussize_tssize_t)
  88 #define ussize_tssize_t  unsigned long long
  89 #endif
  90
  91 #undef PACKAGE_NAME
  92 #undef PACKAGE_STRING
  93 #undef PACKAGE_TARNAME
  94 #undef PACKAGE_VERSION
  95 #include "jasper/jasper.h"
  96 #undef PACKAGE_NAME
  97 #undef PACKAGE_STRING
  98 #undef PACKAGE_TARNAME
  99 #undef PACKAGE_VERSION
 100
 101 #endif
 102 \f
 103 /*
 104   Forward declarations.
 105 */
 106 #if defined(MAGICKCORE_JP2_DELEGATE)
 107 static MagickBooleanType
 108   WriteJP2Image(const ImageInfo *,Image *,ExceptionInfo *);
 109
 110 static volatile MagickBooleanType
 111   instantiate_jp2 = MagickFalse;
 112 #endif
 113 \f
 114 /*
 115 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 116 %                                                                             %
 117 %                                                                             %
 118 %                                                                             %
 119 %   I s J P 2                                                                 %
 120 %                                                                             %
 121 %                                                                             %
 122 %                                                                             %
 123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 124 %
 125 %  IsJP2() returns MagickTrue if the image format type, identified by the
 126 %  magick string, is JP2.
 127 %
 128 %  The format of the IsJP2 method is:
 129 %
 130 %      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 131 %
 132 %  A description of each parameter follows:
 133 %
 134 %    o magick: compare image format pattern against these bytes.
 135 %
 136 %    o length: Specifies the length of the magick string.
 137 %
 138 */
 139 static MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
 140 {
 141   if (length < 9)
 142     return(MagickFalse);
 143   if (memcmp(magick+4,"\152\120\040\040\015",5) == 0)
 144     return(MagickTrue);
 145   return(MagickFalse);
 146 }
 147 \f
 148 /*
 149 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 150 %                                                                             %
 151 %                                                                             %
 152 %                                                                             %
 153 %   I s J P C                                                                 %
 154 %                                                                             %
 155 %                                                                             %
 156 %                                                                             %
 157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 158 %
 159 %  IsJPC()() returns MagickTrue if the image format type, identified by the
 160 %  magick string, is JPC.
 161 %
 162 %  The format of the IsJPC method is:
 163 %
 164 %      MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
 165 %
 166 %  A description of each parameter follows:
 167 %
 168 %    o magick: compare image format pattern against these bytes.
 169 %
 170 %    o length: Specifies the length of the magick string.
 171 %
 172 */
 173 static MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
 174 {
 175   if (length < 2)
 176     return(MagickFalse);
 177   if (memcmp(magick,"\377\117",2) == 0)
 178     return(MagickTrue);
 179   return(MagickFalse);
 180 }
 181 \f
 182 /*
 183 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 184 %                                                                             %
 185 %                                                                             %
 186 %                                                                             %
 187 %   R e a d J P 2 I m a g e                                                   %
 188 %                                                                             %
 189 %                                                                             %
 190 %                                                                             %
 191 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 192 %
 193 %  ReadJP2Image() reads a JPEG 2000 Image file (JP2) or JPEG 2000
 194 %  codestream (JPC) image file and returns it.  It allocates the memory
 195 %  necessary for the new Image structure and returns a pointer to the new
 196 %  image or set of images.
 197 %
 198 %  JP2 support is originally written by Nathan Brown, nathanbrown@letu.edu.
 199 %
 200 %  The format of the ReadJP2Image method is:
 201 %
 202 %      Image *ReadJP2Image(const ImageInfo *image_info,
 203 %        ExceptionInfo *exception)
 204 %
 205 %  A description of each parameter follows:
 206 %
 207 %    o image_info: the image info.
 208 %
 209 %    o exception: return any errors or warnings in this structure.
 210 %
 211 */
 212 #if defined(MAGICKCORE_JP2_DELEGATE)
 213
 214 typedef struct _StreamManager
 215 {
 216   jas_stream_t
 217     *stream;
 218
 219   Image
 220     *image;
 221 } StreamManager;
 222
 223 static int BlobRead(jas_stream_obj_t *object,char *buffer,const int length)
 224 {
 225   ssize_t
 226     count;
 227
 228   StreamManager
 229     *source;
 230
 231   source=(StreamManager *) object;
 232   count=ReadBlob(source->image,(size_t) length,(unsigned char *) buffer);
 233   return((int) count);
 234 }
 235
 236 static int BlobWrite(jas_stream_obj_t *object,char *buffer,const int length)
 237 {
 238   ssize_t
 239     count;
 240
 241   StreamManager
 242     *source;
 243
 244   source=(StreamManager *) object;
 245   count=WriteBlob(source->image,(size_t) length,(unsigned char *) buffer);
 246   return((int) count);
 247 }
 248
 249 static long BlobSeek(jas_stream_obj_t *object,long offset,int origin)
 250 {
 251   StreamManager
 252     *source;
 253
 254   source=(StreamManager *) object;
 255   return((long) SeekBlob(source->image,offset,origin));
 256 }
 257
 258 static int BlobClose(jas_stream_obj_t *object)
 259 {
 260   StreamManager
 261     *source;
 262
 263   source=(StreamManager *) object;
 264   (void) CloseBlob(source->image);
 265   free(source);
 266   source=(StreamManager *) NULL;
 267   return(0);
 268 }
 269
 270 static inline size_t MagickMax(const size_t x,const size_t y)
 271 {
 272   if (x > y)
 273     return(x);
 274   return(y);
 275 }
 276
 277 static inline size_t MagickMin(const size_t x,const size_t y)
 278 {
 279   if (x < y)
 280     return(x);
 281   return(y);
 282 }
 283
 284 static jas_stream_t *JP2StreamManager(Image *image)
 285 {
 286   static jas_stream_ops_t
 287     StreamOperators =
 288     {
 289       BlobRead,
 290       BlobWrite,
 291       BlobSeek,
 292       BlobClose
 293     };
 294
 295   jas_stream_t
 296     *stream;
 297
 298   StreamManager
 299     *source;
 300
 301   stream=(jas_stream_t *) jas_malloc(sizeof(*stream));
 302   if (stream == (jas_stream_t *) NULL)
 303     return((jas_stream_t *) NULL);
 304   (void) ResetMagickMemory(stream,0,sizeof(*stream));
 305   stream->rwlimit_=(-1);
 306   stream->obj_=(jas_stream_obj_t *) jas_malloc(sizeof(StreamManager));
 307   if (stream->obj_ == (jas_stream_obj_t *) NULL)
 308     return((jas_stream_t *) NULL);
 309   (void) ResetMagickMemory(stream->obj_,0,sizeof(StreamManager));
 310   stream->ops_=(&StreamOperators);
 311   stream->openmode_=JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY;
 312   stream->bufbase_=(unsigned char *) jas_malloc(JAS_STREAM_BUFSIZE+
 313     JAS_STREAM_MAXPUTBACK);
 314   if (stream->bufbase_ == (void *) NULL)
 315     {
 316       stream->bufbase_=stream->tinybuf_;
 317       stream->bufsize_=1;
 318     }
 319   else
 320     {
 321       stream->bufmode_=JAS_STREAM_FREEBUF | JAS_STREAM_BUFMODEMASK;
 322       stream->bufsize_=JAS_STREAM_BUFSIZE;
 323     }
 324   stream->bufstart_=(&stream->bufbase_[JAS_STREAM_MAXPUTBACK]);
 325   stream->ptr_=stream->bufstart_;
 326   stream->cnt_=0;
 327   source=(StreamManager *) stream->obj_;
 328   source->image=image;
 329   return(stream);
 330 }
 331
 332 static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
 333 {
 334   Image
 335     *image;
 336
 337   jas_cmprof_t
 338     *cm_profile;
 339
 340   jas_iccprof_t
 341     *icc_profile;
 342
 343   jas_image_t
 344     *jp2_image;
 345
 346   jas_matrix_t
 347     *pixels[4];
 348
 349   jas_stream_t
 350     *jp2_stream;
 351
 352   MagickBooleanType
 353     status;
 354
 355   QuantumAny
 356     pixel,
 357     range[4];
 358
 359   register ssize_t
 360     i,
 361     x;
 362
 363   register Quantum
 364     *q;
 365
 366   size_t
 367     maximum_component_depth,
 368     number_components,
 369     x_step[4],
 370     y_step[4];
 371
 372   ssize_t
 373     components[4],
 374     y;
 375
 376   /*
 377     Open image file.
 378   */
 379   assert(image_info != (const ImageInfo *) NULL);
 380   assert(image_info->signature == MagickSignature);
 381   if (image_info->debug != MagickFalse)
 382     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 383       image_info->filename);
 384   assert(exception != (ExceptionInfo *) NULL);
 385   assert(exception->signature == MagickSignature);
 386   image=AcquireImage(image_info);
 387   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 388   if (status == MagickFalse)
 389     {
 390       image=DestroyImageList(image);
 391       return((Image *) NULL);
 392     }
 393   /*
 394     Initialize JPEG 2000 API.
 395   */
 396   jp2_stream=JP2StreamManager(image);
 397   if (jp2_stream == (jas_stream_t *) NULL)
 398     ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
 399   jp2_image=jas_image_decode(jp2_stream,-1,0);
 400   if (jp2_image == (jas_image_t *) NULL)
 401     {
 402       (void) jas_stream_close(jp2_stream);
 403       ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
 404     }
 405   switch (jas_clrspc_fam(jas_image_clrspc(jp2_image)))
 406   {
 407     case JAS_CLRSPC_FAM_RGB:
 408     {
 409       components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_R);
 410       components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_G);
 411       components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_B);
 412       if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
 413         {
 414           (void) jas_stream_close(jp2_stream);
 415           jas_image_destroy(jp2_image);
 416           ThrowReaderException(CorruptImageError,"MissingImageChannel");
 417         }
 418       number_components=3;
 419       components[3]=jas_image_getcmptbytype(jp2_image,3);
 420       if (components[3] > 0)
 421         {
 422           image->matte=MagickTrue;
 423           number_components++;
 424         }
 425       break;
 426     }
 427     case JAS_CLRSPC_FAM_GRAY:
 428     {
 429       components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_GRAY_Y);
 430       if (components[0] < 0)
 431         {
 432           (void) jas_stream_close(jp2_stream);
 433           jas_image_destroy(jp2_image);
 434           ThrowReaderException(CorruptImageError,"MissingImageChannel");
 435         }
 436       number_components=1;
 437       break;
 438     }
 439     case JAS_CLRSPC_FAM_YCBCR:
 440     {
 441       components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_Y);
 442       components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CB);
 443       components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CR);
 444       if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
 445         {
 446           (void) jas_stream_close(jp2_stream);
 447           jas_image_destroy(jp2_image);
 448           ThrowReaderException(CorruptImageError,"MissingImageChannel");
 449         }
 450       number_components=3;
 451       components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN);
 452       if (components[3] > 0)
 453         {
 454           image->matte=MagickTrue;
 455           number_components++;
 456         }
 457       image->colorspace=YCbCrColorspace;
 458       break;
 459     }
 460     default:
 461     {
 462       (void) jas_stream_close(jp2_stream);
 463       jas_image_destroy(jp2_image);
 464       ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported");
 465     }
 466   }
 467   image->columns=jas_image_width(jp2_image);
 468   image->rows=jas_image_height(jp2_image);
 469   image->compression=JPEG2000Compression;
 470   for (i=0; i < (ssize_t) number_components; i++)
 471   {
 472     size_t
 473       height,
 474       width;
 475
 476     width=(size_t) (jas_image_cmptwidth(jp2_image,components[i])*
 477       jas_image_cmpthstep(jp2_image,components[i]));
 478     height=(size_t) (jas_image_cmptheight(jp2_image,components[i])*
 479       jas_image_cmptvstep(jp2_image,components[i]));
 480     x_step[i]=(unsigned int) jas_image_cmpthstep(jp2_image,components[i]);
 481     y_step[i]=(unsigned int) jas_image_cmptvstep(jp2_image,components[i]);
 482     if ((width != image->columns) || (height != image->rows) ||
 483         (jas_image_cmpttlx(jp2_image,components[i]) != 0) ||
 484         (jas_image_cmpttly(jp2_image,components[i]) != 0) ||
 485         (x_step[i] != 1) || (y_step[i] != 1) ||
 486         (jas_image_cmptsgnd(jp2_image,components[i]) != MagickFalse))
 487       {
 488         (void) jas_stream_close(jp2_stream);
 489         jas_image_destroy(jp2_image);
 490         ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported");
 491       }
 492   }
 493   /*
 494     Convert JPEG 2000 pixels.
 495   */
 496   image->matte=number_components > 3 ? MagickTrue : MagickFalse;
 497   maximum_component_depth=0;
 498   for (i=0; i < (ssize_t) number_components; i++)
 499   {
 500     maximum_component_depth=(unsigned int) MagickMax((size_t)
 501       jas_image_cmptprec(jp2_image,components[i]),(size_t)
 502       maximum_component_depth);
 503     pixels[i]=jas_matrix_create(1,(int) (image->columns/x_step[i]));
 504     if (pixels[i] == (jas_matrix_t *) NULL)
 505       {
 506         for (--i; i >= 0; i--)
 507           jas_matrix_destroy(pixels[i]);
 508         jas_image_destroy(jp2_image);
 509         ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 510       }
 511   }
 512   image->depth=maximum_component_depth;
 513   if (image_info->ping != MagickFalse)
 514     {
 515       (void) jas_stream_close(jp2_stream);
 516       jas_image_destroy(jp2_image);
 517       return(GetFirstImageInList(image));
 518     }
 519   for (i=0; i < (ssize_t) number_components; i++)
 520     range[i]=GetQuantumRange((size_t) jas_image_cmptprec(jp2_image,
 521       components[i]));
 522   for (y=0; y < (ssize_t) image->rows; y++)
 523   {
 524     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 525     if (q == (const Quantum *) NULL)
 526       break;
 527     for (i=0; i < (ssize_t) number_components; i++)
 528       (void) jas_image_readcmpt(jp2_image,(short) components[i],0,
 529         (jas_image_coord_t) (y/y_step[i]),(jas_image_coord_t) (image->columns/
 530         x_step[i]),1,pixels[i]);
 531     switch (number_components)
 532     {
 533       case 1:
 534       {
 535         /*
 536           Grayscale.
 537         */
 538         for (x=0; x < (ssize_t) image->columns; x++)
 539         {
 540           pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
 541           SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
 542           SetPixelGreen(image,GetPixelRed(image,q),q);
 543           SetPixelBlue(image,GetPixelRed(image,q),q);
 544           q+=GetPixelChannels(image);
 545         }
 546         break;
 547       }
 548       case 3:
 549       {
 550         /*
 551           RGB.
 552         */
 553         for (x=0; x < (ssize_t) image->columns; x++)
 554         {
 555           pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
 556           SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
 557           pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
 558           SetPixelGreen(image,ScaleAnyToQuantum((QuantumAny) pixel,range[1]),q);
 559           pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
 560           SetPixelBlue(image,ScaleAnyToQuantum((QuantumAny) pixel,range[2]),q);
 561           q+=GetPixelChannels(image);
 562         }
 563         break;
 564       }
 565       case 4:
 566       {
 567         /*
 568           RGBA.
 569         */
 570         for (x=0; x < (ssize_t) image->columns; x++)
 571         {
 572           pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
 573           SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
 574           pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
 575           SetPixelGreen(image,ScaleAnyToQuantum((QuantumAny) pixel,range[1]),q);
 576           pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
 577           SetPixelBlue(image,ScaleAnyToQuantum((QuantumAny) pixel,range[2]),q);
 578           pixel=(QuantumAny) jas_matrix_getv(pixels[3],x/x_step[3]);
 579           SetPixelAlpha(image,ScaleAnyToQuantum((QuantumAny) pixel,range[3]),q);
 580           q+=GetPixelChannels(image);
 581         }
 582         break;
 583       }
 584     }
 585     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 586       break;
 587     status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 588       image->rows);
 589     if (status == MagickFalse)
 590       break;
 591   }
 592   cm_profile=jas_image_cmprof(jp2_image);
 593   icc_profile=(jas_iccprof_t *) NULL;
 594   if (cm_profile != (jas_cmprof_t *) NULL)
 595     icc_profile=jas_iccprof_createfromcmprof(cm_profile);
 596   if (icc_profile != (jas_iccprof_t *) NULL)
 597     {
 598       jas_stream_t
 599         *icc_stream;
 600
 601       icc_stream=jas_stream_memopen(NULL,0);
 602       if ((icc_stream != (jas_stream_t *) NULL) &&
 603           (jas_iccprof_save(icc_profile,icc_stream) == 0) &&
 604           (jas_stream_flush(icc_stream) == 0))
 605         {
 606           StringInfo
 607             *icc_profile,
 608             *profile;
 609
 610           jas_stream_memobj_t
 611             *blob;
 612
 613           /*
 614             Extract the icc profile, handle errors without much noise.
 615           */
 616           blob=(jas_stream_memobj_t *) icc_stream->obj_;
 617           if (image->debug != MagickFalse)
 618             (void) LogMagickEvent(CoderEvent,GetMagickModule(),
 619               "Profile: ICC, %.20g bytes",(double) blob->len_);
 620           profile=AcquireStringInfo(blob->len_);
 621           SetStringInfoDatum(profile,blob->buf_);
 622           icc_profile=(StringInfo *) GetImageProfile(image,"icc");
 623           if (icc_profile == (StringInfo *) NULL)
 624             (void) SetImageProfile(image,"icc",profile);
 625           else
 626             (void) ConcatenateStringInfo(icc_profile,profile);
 627           profile=DestroyStringInfo(profile);
 628           (void) jas_stream_close(icc_stream);
 629         }
 630     }
 631   (void) jas_stream_close(jp2_stream);
 632   jas_image_destroy(jp2_image);
 633   for (i=0; i < (ssize_t) number_components; i++)
 634     jas_matrix_destroy(pixels[i]);
 635   return(GetFirstImageInList(image));
 636 }
 637 #endif
 638 \f
 639 /*
 640 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 641 %                                                                             %
 642 %                                                                             %
 643 %                                                                             %
 644 %   R e g i s t e r J P 2 I m a g e                                           %
 645 %                                                                             %
 646 %                                                                             %
 647 %                                                                             %
 648 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 649 %
 650 %  RegisterJP2Image() adds attributes for the JP2 image format to the list of
 651 %  supported formats.  The attributes include the image format tag, a method
 652 %  method to read and/or write the format, whether the format supports the
 653 %  saving of more than one frame to the same file or blob, whether the format
 654 %  supports native in-memory I/O, and a brief description of the format.
 655 %
 656 %  The format of the RegisterJP2Image method is:
 657 %
 658 %      size_t RegisterJP2Image(void)
 659 %
 660 */
 661 ModuleExport size_t RegisterJP2Image(void)
 662 {
 663   MagickInfo
 664     *entry;
 665
 666   entry=SetMagickInfo("JP2");
 667   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 668   entry->module=ConstantString("JP2");
 669   entry->magick=(IsImageFormatHandler *) IsJP2;
 670   entry->adjoin=MagickFalse;
 671   entry->seekable_stream=MagickTrue;
 672   entry->thread_support=NoThreadSupport;
 673 #if defined(MAGICKCORE_JP2_DELEGATE)
 674   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 675   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 676 #endif
 677   (void) RegisterMagickInfo(entry);
 678   entry=SetMagickInfo("JPC");
 679   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 680   entry->module=ConstantString("JP2");
 681   entry->magick=(IsImageFormatHandler *) IsJPC;
 682   entry->adjoin=MagickFalse;
 683   entry->seekable_stream=MagickTrue;
 684   entry->thread_support=NoThreadSupport;
 685 #if defined(MAGICKCORE_JP2_DELEGATE)
 686   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 687   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 688 #endif
 689   (void) RegisterMagickInfo(entry);
 690   entry=SetMagickInfo("J2C");
 691   entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
 692   entry->module=ConstantString("JP2");
 693   entry->magick=(IsImageFormatHandler *) IsJPC;
 694   entry->adjoin=MagickFalse;
 695   entry->seekable_stream=MagickTrue;
 696   entry->thread_support=NoThreadSupport;
 697 #if defined(MAGICKCORE_JP2_DELEGATE)
 698   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 699   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 700 #endif
 701   (void) RegisterMagickInfo(entry);
 702   entry=SetMagickInfo("JPX");
 703   entry->description=ConstantString("JPEG-2000 File Format Syntax");
 704   entry->module=ConstantString("JP2");
 705   entry->magick=(IsImageFormatHandler *) IsJPC;
 706   entry->adjoin=MagickFalse;
 707   entry->seekable_stream=MagickTrue;
 708   entry->thread_support=NoThreadSupport;
 709 #if defined(MAGICKCORE_JP2_DELEGATE)
 710   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 711   entry->encoder=(EncodeImageHandler *) WriteJP2Image;
 712 #endif
 713   (void) RegisterMagickInfo(entry);
 714   entry=SetMagickInfo("PGX");
 715   entry->description=ConstantString("JPEG-2000 VM Format");
 716   entry->module=ConstantString("JP2");
 717   entry->magick=(IsImageFormatHandler *) IsJPC;
 718   entry->adjoin=MagickFalse;
 719   entry->seekable_stream=MagickTrue;
 720   entry->thread_support=NoThreadSupport;
 721 #if defined(MAGICKCORE_JP2_DELEGATE)
 722   entry->decoder=(DecodeImageHandler *) ReadJP2Image;
 723 #endif
 724   (void) RegisterMagickInfo(entry);
 725 #if defined(MAGICKCORE_JP2_DELEGATE)
 726   if (instantiate_jp2 == MagickFalse)
 727     {
 728       jas_init();
 729       instantiate_jp2=MagickTrue;
 730     }
 731 #endif
 732   return(MagickImageCoderSignature);
 733 }
 734 \f
 735 /*
 736 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 737 %                                                                             %
 738 %                                                                             %
 739 %                                                                             %
 740 %   U n r e g i s t e r J P 2 I m a g e                                       %
 741 %                                                                             %
 742 %                                                                             %
 743 %                                                                             %
 744 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 745 %
 746 %  UnregisterJP2Image() removes format registrations made by the JP2 module
 747 %  from the list of supported formats.
 748 %
 749 %  The format of the UnregisterJP2Image method is:
 750 %
 751 %      UnregisterJP2Image(void)
 752 %
 753 */
 754 ModuleExport void UnregisterJP2Image(void)
 755 {
 756   (void) UnregisterMagickInfo("PGX");
 757   (void) UnregisterMagickInfo("J2C");
 758   (void) UnregisterMagickInfo("JPC");
 759   (void) UnregisterMagickInfo("JP2");
 760 #if defined(MAGICKCORE_JP2_DELEGATE)
 761   if (instantiate_jp2 != MagickFalse)
 762     {
 763       jas_cleanup();
 764       instantiate_jp2=MagickFalse;
 765     }
 766 #endif
 767 }
 768 \f
 769 #if defined(MAGICKCORE_JP2_DELEGATE)
 770 /*
 771 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 772 %                                                                             %
 773 %                                                                             %
 774 %                                                                             %
 775 %   W r i t e J P 2 I m a g e                                                 %
 776 %                                                                             %
 777 %                                                                             %
 778 %                                                                             %
 779 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 780 %
 781 %  WriteJP2Image() writes an image in the JPEG 2000 image format.
 782 %
 783 %  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
 784 %
 785 %  The format of the WriteJP2Image method is:
 786 %
 787 %      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,
 788 %        Image *image,ExceptionInfo *exception)
 789 %
 790 %  A description of each parameter follows.
 791 %
 792 %    o image_info: the image info.
 793 %
 794 %    o image:  The image.
 795 %
 796 %    o exception: return any errors or warnings in this structure.
 797 %
 798 */
 799 static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
 800   ExceptionInfo *exception)
 801 {
 802   char
 803     *key,
 804     magick[MaxTextExtent],
 805     *options;
 806
 807   const char
 808     *option;
 809
 810   jas_image_cmptparm_t
 811     component_info[4];
 812
 813   jas_image_t
 814     *jp2_image;
 815
 816   jas_matrix_t
 817     *pixels[4];
 818
 819   jas_stream_t
 820     *jp2_stream;
 821
 822   MagickBooleanType
 823     status;
 824
 825   QuantumAny
 826     range;
 827
 828   register const Quantum
 829     *p;
 830
 831   register ssize_t
 832     i,
 833     x;
 834
 835   size_t
 836     number_components;
 837
 838   ssize_t
 839     format,
 840     y;
 841
 842   /*
 843     Open image file.
 844   */
 845   assert(image_info != (const ImageInfo *) NULL);
 846   assert(image_info->signature == MagickSignature);
 847   assert(image != (Image *) NULL);
 848   assert(image->signature == MagickSignature);
 849   if (image->debug != MagickFalse)
 850     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 851   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 852   if (status == MagickFalse)
 853     return(status);
 854   /*
 855     Initialize JPEG 2000 API.
 856   */
 857   if (IsRGBColorspace(image->colorspace) == MagickFalse)
 858     (void) TransformImageColorspace(image,RGBColorspace);
 859   jp2_stream=JP2StreamManager(image);
 860   if (jp2_stream == (jas_stream_t *) NULL)
 861     ThrowWriterException(DelegateError,"UnableToManageJP2Stream");
 862   number_components=image->matte ? 4UL : 3UL;
 863   if ((image_info->type != TrueColorType) &&
 864       (IsImageGray(image,exception) != MagickFalse))
 865     number_components=1;
 866   if ((image->columns != (unsigned int) image->columns) ||
 867       (image->rows != (unsigned int) image->rows))
 868     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 869   (void) ResetMagickMemory(&component_info,0,sizeof(component_info));
 870   for (i=0; i < (ssize_t) number_components; i++)
 871   {
 872     component_info[i].tlx=0;
 873     component_info[i].tly=0;
 874     component_info[i].hstep=1;
 875     component_info[i].vstep=1;
 876     component_info[i].width=(unsigned int) image->columns;
 877     component_info[i].height=(unsigned int) image->rows;
 878     component_info[i].prec=(int) MagickMax(MagickMin(image->depth,16),2);
 879     component_info[i].sgnd=MagickFalse;
 880   }
 881   jp2_image=jas_image_create((int) number_components,component_info,
 882     JAS_CLRSPC_UNKNOWN);
 883   if (jp2_image == (jas_image_t *) NULL)
 884     ThrowWriterException(DelegateError,"UnableToCreateImage");
 885   if (number_components == 1)
 886     {
 887       /*
 888         sRGB Grayscale.
 889       */
 890       jas_image_setclrspc(jp2_image,JAS_CLRSPC_SGRAY);
 891       jas_image_setcmpttype(jp2_image,0,
 892         JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
 893     }
 894   else
 895     {
 896       /*
 897         sRGB.
 898       */
 899       jas_image_setclrspc(jp2_image,JAS_CLRSPC_SRGB);
 900       jas_image_setcmpttype(jp2_image,0,
 901         (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
 902       jas_image_setcmpttype(jp2_image,1,
 903         (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
 904       jas_image_setcmpttype(jp2_image,2,
 905         (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
 906       if (number_components == 4)
 907         jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
 908     }
 909   /*
 910     Convert to JPEG 2000 pixels.
 911   */
 912   for (i=0; i < (ssize_t) number_components; i++)
 913   {
 914     pixels[i]=jas_matrix_create(1,(int) image->columns);
 915     if (pixels[i] == (jas_matrix_t *) NULL)
 916       {
 917         for (x=0; x < i; x++)
 918           jas_matrix_destroy(pixels[x]);
 919         jas_image_destroy(jp2_image);
 920         ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 921       }
 922   }
 923   range=GetQuantumRange((size_t) component_info[0].prec);
 924   for (y=0; y < (ssize_t) image->rows; y++)
 925   {
 926     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 927     if (p == (const Quantum *) NULL)
 928       break;
 929     for (x=0; x < (ssize_t) image->columns; x++)
 930     {
 931       if (number_components == 1)
 932         jas_matrix_setv(pixels[0],x,(jas_seqent_t) ScaleQuantumToAny(
 933           GetPixelIntensity(image,p),range));
 934       else
 935         {
 936           jas_matrix_setv(pixels[0],x,(jas_seqent_t) ScaleQuantumToAny(
 937             GetPixelRed(image,p),range));
 938           jas_matrix_setv(pixels[1],x,(jas_seqent_t) ScaleQuantumToAny(
 939             GetPixelGreen(image,p),range));
 940           jas_matrix_setv(pixels[2],x,(jas_seqent_t) ScaleQuantumToAny(
 941             GetPixelBlue(image,p),range));
 942           if (number_components > 3)
 943             jas_matrix_setv(pixels[3],x,(jas_seqent_t) ScaleQuantumToAny(
 944               GetPixelAlpha(image,p),range));
 945         }
 946       p+=GetPixelChannels(image);
 947     }
 948     for (i=0; i < (ssize_t) number_components; i++)
 949       (void) jas_image_writecmpt(jp2_image,(short) i,0,(unsigned int) y,
 950         (unsigned int) image->columns,1,pixels[i]);
 951     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 952       image->rows);
 953     if (status == MagickFalse)
 954       break;
 955   }
 956   (void) CopyMagickString(magick,image_info->magick,MaxTextExtent);
 957   if (LocaleCompare(magick,"J2C") == 0)
 958     (void) CopyMagickString(magick,"JPC",MaxTextExtent);
 959   LocaleLower(magick);
 960   format=jas_image_strtofmt(magick);
 961   options=(char *) NULL;
 962   ResetImageOptionIterator(image_info);
 963   key=GetNextImageOption(image_info);
 964   for ( ; key != (char *) NULL; key=GetNextImageOption(image_info))
 965   {
 966     option=GetImageOption(image_info,key);
 967     if (option == (const char *) NULL)
 968       continue;
 969     if (LocaleNCompare(key,"jp2:",4) == 0)
 970       {
 971         (void) ConcatenateString(&options,key+4);
 972         if (*option != '\0')
 973           {
 974             (void) ConcatenateString(&options,"=");
 975             (void) ConcatenateString(&options,option);
 976           }
 977         (void) ConcatenateString(&options," ");
 978       }
 979   }
 980   option=GetImageOption(image_info,"jp2:rate");
 981   if ((option == (const char *) NULL) &&
 982       (image_info->compression != LosslessJPEGCompression) &&
 983       (image->quality != UndefinedCompressionQuality) &&
 984       ((double) image->quality <= 99.5) &&
 985       ((image->rows*image->columns) > 2500))
 986     {
 987       char
 988         option[MaxTextExtent];
 989
 990       double
 991         alpha,
 992         header_size,
 993         number_pixels,
 994         rate,
 995         target_size;
 996
 997       alpha=115.0-image->quality;
 998       rate=100.0/(alpha*alpha);
 999       header_size=550.0;
1000       header_size+=(number_components-1)*142;
1001       number_pixels=(double) image->rows*image->columns*number_components*
1002         (GetImageQuantumDepth(image,MagickTrue)/8);
1003       target_size=(number_pixels*rate)+header_size;
1004       rate=target_size/number_pixels;
1005       (void) FormatLocaleString(option,MaxTextExtent,"rate=%g",rate);
1006       (void) ConcatenateString(&options,option);
1007     }
1008   status=jas_image_encode(jp2_image,jp2_stream,format,options) != 0 ?
1009     MagickTrue : MagickFalse;
1010   (void) jas_stream_close(jp2_stream);
1011   for (i=0; i < (ssize_t) number_components; i++)
1012     jas_matrix_destroy(pixels[i]);
1013   jas_image_destroy(jp2_image);
1014   if (status != MagickFalse)
1015     ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
1016   return(MagickTrue);
1017 }
1018 #endif