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