coders/jp2.c

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                              JJJ  PPPP    222                               %
%                               J   P   P  2   2                              %
%                               J   PPPP     22                               %
%                            J  J   P       2                                 %
%                             JJ    P      22222                              %
%                                                                             %
%                                                                             %
%                     Read/Write JPEG-2000 Image Format                       %
%                                                                             %
%                                   Cristy                                    %
%                                Nathan Brown                                 %
%                                 June 2001                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization      %
%  dedicated to making software imaging solutions freely available.           %
%                                                                             %
%  You may not use this file except in compliance with the License.  You may  %
%  obtain a copy of the License at                                            %
%                                                                             %
%    http://www.imagemagick.org/script/license.php                            %
%                                                                             %
%  Unless required by applicable law or agreed to in writing, software        %
%  distributed under the License is distributed on an "AS IS" BASIS,          %
%  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
%  See the License for the specific language governing permissions and        %
%  limitations under the License.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/

/*
  Include declarations.
*/
#include "magick/studio.h"
#include "magick/artifact.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/option.h"
#include "magick/pixel-accessor.h"
#include "magick/profile.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/statistic.h"
#include "magick/string_.h"
#include "magick/string-private.h"
#include "magick/module.h"
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
#include <openjpeg.h>
#endif

/*
  Forward declarations.
*/
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
static MagickBooleanType
  WriteJP2Image(const ImageInfo *,Image *);
#endif

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s J 2 K                                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsJ2K() returns MagickTrue if the image format type, identified by the
%  magick string, is J2K.
%
%  The format of the IsJ2K method is:
%
%      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
%
%  A description of each parameter follows:
%
%    o magick: compare image format pattern against these bytes.
%
%    o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
{
  if (length < 4)
    return(MagickFalse);
  if (memcmp(magick,"\xff\x4f\xff\x51",4) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s J P 2                                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsJP2() returns MagickTrue if the image format type, identified by the
%  magick string, is JP2.
%
%  The format of the IsJP2 method is:
%
%      MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
%
%  A description of each parameter follows:
%
%    o magick: compare image format pattern against these bytes.
%
%    o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
{
  if (length < 12)
    return(MagickFalse);
  if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
    return(MagickTrue);
  if (memcmp(magick,"\x0d\x0a\x87\x0a",12) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s J P C                                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsJPC()() returns MagickTrue if the image format type, identified by the
%  magick string, is JPC.
%
%  The format of the IsJPC method is:
%
%      MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
%
%  A description of each parameter follows:
%
%    o magick: compare image format pattern against these bytes.
%
%    o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsJPC(const unsigned char *magick,const size_t length)
{
  if (length < 12)
    return(MagickFalse);
  if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
    return(MagickTrue);
  if (memcmp(magick,"\x0d\x0a\x87\x0a",12) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d J P 2 I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadJP2Image() reads a JPEG 2000 Image file (JP2) or JPEG 2000
%  codestream (JPC) image file and returns it.  It allocates the memory
%  necessary for the new Image structure and returns a pointer to the new
%  image or set of images.
%
%  JP2 support is originally written by Nathan Brown, nathanbrown@letu.edu.
%
%  The format of the ReadJP2Image method is:
%
%      Image *ReadJP2Image(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
static void JP2ErrorHandler(const char *message,void *client_data)
{
  ExceptionInfo
    *exception;

  exception=(ExceptionInfo *) client_data;
  (void) ThrowMagickException(exception,GetMagickModule(),CoderError,
    message,"`%s'","OpenJP2");
}

static OPJ_SIZE_T JP2ReadHandler(void *buffer,OPJ_SIZE_T length,void *context)
{
  Image
    *image;

  ssize_t
    count;

  image=(Image *) context;
  count=ReadBlob(image,(ssize_t) length,(unsigned char *) buffer);
  if (count == 0)
    return(-1);
  return((OPJ_SIZE_T) count);
}

static OPJ_BOOL JP2SeekHandler(OPJ_OFF_T offset,void *context)
{
  Image
    *image;

  image=(Image *) context;
  return(SeekBlob(image,offset,SEEK_SET) < 0 ? 0 : 1);
}

static OPJ_OFF_T JP2SkipHandler(OPJ_OFF_T length,void *context)
{
  Image
    *image;

  image=(Image *) context;
  if (DiscardBlobBytes(image,(size_t) length) == MagickFalse)
    return(0);
  return(length);
}

static void JP2WarningHandler(const char *message,void *client_data)
{
  ExceptionInfo
    *exception;

  exception=(ExceptionInfo *) client_data;
  (void) ThrowMagickException(exception,GetMagickModule(),CoderWarning,
    message,"`%s'","OpenJP2");
}

static OPJ_SIZE_T JP2WriteHandler(void *buffer,OPJ_SIZE_T length,void *context)
{
  Image
    *image;

  ssize_t
    count;

  image=(Image *) context;
  count=WriteBlob(image,(ssize_t) length,(unsigned char *) buffer);
  return((OPJ_SIZE_T) count);
}

static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
{
  const char
    *option;

  Image
    *image;

  int
    jp2_status;

  MagickBooleanType
    status;

  opj_codec_t
    *jp2_codec;

  opj_codestream_index_t
    *codestream_index = (opj_codestream_index_t *) NULL;

  opj_dparameters_t
    parameters;

  opj_image_t
    *jp2_image;

  opj_stream_t
    *jp2_stream;

  register ssize_t
    i;

  ssize_t
    y;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Initialize JP2 codec.
  */
  if (LocaleCompare(image_info->magick,"JPT") == 0)
    jp2_codec=opj_create_decompress(OPJ_CODEC_JPT);
  else
    if (LocaleCompare(image_info->magick,"J2K") == 0)
      jp2_codec=opj_create_decompress(OPJ_CODEC_J2K);
    else
      jp2_codec=opj_create_decompress(OPJ_CODEC_JP2);
  opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
  opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
  opj_set_default_decoder_parameters(&parameters);
  option=GetImageOption(image_info,"jp2:reduce-factor");
  if (option != (const char *) NULL)
    parameters.cp_reduce=StringToInteger(option);
  option=GetImageOption(image_info,"jp2:quality-layers");
  if (option != (const char *) NULL)
    parameters.cp_layer=StringToInteger(option);
  if (opj_setup_decoder(jp2_codec,&parameters) == 0)
    {
      opj_destroy_codec(jp2_codec);
      ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
    }
  jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,1);
  opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
  opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
  opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
  opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
  opj_stream_set_user_data(jp2_stream,image);
  opj_stream_set_user_data_length(jp2_stream,GetBlobSize(image));
  if (opj_read_header(jp2_stream,jp2_codec,&jp2_image) == 0)
    {
      opj_stream_set_user_data(jp2_stream,NULL);
      opj_stream_destroy_v3(jp2_stream);
      opj_destroy_codec(jp2_codec);
      ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
    }
  if ((image->columns != 0) && (image->rows != 0))
    {
      /*
        Extract an area from the image.
      */
      jp2_status=opj_set_decode_area(jp2_codec,jp2_image,image->extract_info.x,
        image->extract_info.y,image->extract_info.x+image->columns,
        image->extract_info.y+image->rows);
      if (jp2_status == 0)
        {
          opj_stream_set_user_data(jp2_stream,NULL);
          opj_stream_destroy_v3(jp2_stream);
          opj_destroy_codec(jp2_codec);
          opj_image_destroy(jp2_image);
          ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
        }
    }
  if ((opj_decode(jp2_codec,jp2_stream,jp2_image) == 0) ||
      (opj_end_decompress(jp2_codec,jp2_stream) == 0))
    {
      opj_stream_set_user_data(jp2_stream,NULL);
      opj_stream_destroy_v3(jp2_stream);
      opj_destroy_codec(jp2_codec);
      opj_image_destroy(jp2_image);
      ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
    }
  opj_stream_set_user_data(jp2_stream,NULL);
  opj_stream_destroy_v3(jp2_stream);
  for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
  {
    if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
      {
        opj_stream_set_user_data(jp2_stream,NULL);
        opj_destroy_codec(jp2_codec);
        opj_image_destroy(jp2_image);
        ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
      }
  }
  /*
    Convert JP2 image.
  */
  image->columns=(size_t) jp2_image->comps[0].w;
  image->rows=(size_t) jp2_image->comps[0].h;
  image->compression=JPEG2000Compression;
  if (jp2_image->numcomps <= 2)
    {
      SetImageColorspace(image,GRAYColorspace);
      if (jp2_image->numcomps > 1)
        image->matte=MagickTrue;
    }
  if (jp2_image->numcomps > 3)
    image->matte=MagickTrue;
  for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
  {
    if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0))
      {
        opj_stream_set_user_data(jp2_stream,NULL);
        opj_destroy_codec(jp2_codec);
        opj_image_destroy(jp2_image);
        ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
      }
    if ((jp2_image->comps[i].dx > 1) || (jp2_image->comps[i].dy > 1))
      image->colorspace=YUVColorspace;
  }
  if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
    {
      StringInfo
        *profile;

      profile=BlobToStringInfo(jp2_image->icc_profile_buf,
        jp2_image->icc_profile_len);
      if (profile != (StringInfo *) NULL)
        SetImageProfile(image,"icc",profile);
    }
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register PixelPacket
      *restrict q;

    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      register ssize_t
        i;

      for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
      {
        double
          pixel,
          scale;

        scale=QuantumRange/(double) ((1UL << jp2_image->comps[i].prec)-1);
        pixel=scale*(jp2_image->comps[i].data[y/jp2_image->comps[i].dy*
          image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx]+
          (jp2_image->comps[i].sgnd ? 1UL << (jp2_image->comps[i].prec-1) : 0));
        switch (i)
        {
           case 0:
           {
             SetPixelRed(image,ClampToQuantum(pixel),q);
             SetPixelGreen(image,ClampToQuantum(pixel),q);
             SetPixelBlue(image,ClampToQuantum(pixel),q);
             SetPixelAlpha(image,OpaqueAlpha,q);
             break;
           }
           case 1:
           {
             if (jp2_image->numcomps == 2)
               {
                 SetPixelAlpha(image,ClampToQuantum(pixel),q);
                 break;
               }
             SetPixelGreen(image,ClampToQuantum(pixel),q);
             break;
           }
           case 2:
           {
             SetPixelBlue(image,ClampToQuantum(pixel),q);
             break;
           }
           case 3:
           {
             SetPixelAlpha(image,ClampToQuantum(pixel),q);
             break;
           }
        }
      }
      q+=GetPixelChannels(image);
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  /*
    Free resources.
  */
  opj_destroy_codec(jp2_codec);
  opj_image_destroy(jp2_image);
  opj_destroy_cstr_index(&codestream_index);
  return(GetFirstImageInList(image));
}
#endif

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e g i s t e r J P 2 I m a g e                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RegisterJP2Image() adds attributes for the JP2 image format to the list of
%  supported formats.  The attributes include the image format tag, a method
%  method to read and/or write the format, whether the format supports the
%  saving of more than one frame to the same file or blob, whether the format
%  supports native in-memory I/O, and a brief description of the format.
%
%  The format of the RegisterJP2Image method is:
%
%      size_t RegisterJP2Image(void)
%
*/
ModuleExport size_t RegisterJP2Image(void)
{
  MagickInfo
    *entry;

  entry=SetMagickInfo("JP2");
  entry->description=ConstantString("JPEG-2000 File Format Syntax");
  entry->mime_type=ConstantString("image/jp2");
  entry->module=ConstantString("JP2");
  entry->magick=(IsImageFormatHandler *) IsJP2;
  entry->adjoin=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=NoThreadSupport;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  entry->decoder=(DecodeImageHandler *) ReadJP2Image;
  entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("J2K");
  entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
  entry->mime_type=ConstantString("image/jp2");
  entry->module=ConstantString("JP2");
  entry->magick=(IsImageFormatHandler *) IsJ2K;
  entry->adjoin=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=NoThreadSupport;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  entry->decoder=(DecodeImageHandler *) ReadJP2Image;
  entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("JPT");
  entry->description=ConstantString("JPEG-2000 File Format Syntax");
  entry->mime_type=ConstantString("image/jp2");
  entry->module=ConstantString("JP2");
  entry->magick=(IsImageFormatHandler *) IsJP2;
  entry->adjoin=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=NoThreadSupport;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  entry->decoder=(DecodeImageHandler *) ReadJP2Image;
  entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("JPC");
  entry->description=ConstantString("JPEG-2000 Code Stream Syntax");
  entry->mime_type=ConstantString("image/jp2");
  entry->module=ConstantString("JP2");
  entry->magick=(IsImageFormatHandler *) IsJPC;
  entry->adjoin=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=NoThreadSupport;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
  entry->decoder=(DecodeImageHandler *) ReadJP2Image;
  entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
  (void) RegisterMagickInfo(entry);
  return(MagickImageCoderSignature);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   U n r e g i s t e r J P 2 I m a g e                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  UnregisterJP2Image() removes format registrations made by the JP2 module
%  from the list of supported formats.
%
%  The format of the UnregisterJP2Image method is:
%
%      UnregisterJP2Image(void)
%
*/
ModuleExport void UnregisterJP2Image(void)
{
  (void) UnregisterMagickInfo("JPC");
  (void) UnregisterMagickInfo("JPT");
  (void) UnregisterMagickInfo("JP2");
  (void) UnregisterMagickInfo("J2K");
}

#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e J P 2 I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WriteJP2Image() writes an image in the JPEG 2000 image format.
%
%  JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
%
%  The format of the WriteJP2Image method is:
%
%      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image)
%
%  A description of each parameter follows.
%
%    o image_info: the image info.
%
%    o image:  The image.
%
*/
static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image)
{
  MagickBooleanType
    status;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
  if (status == MagickFalse)
    return(status);
  /*
    Initialize JPEG 2000 API.
  */
  if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
    (void) TransformImageColorspace(image,sRGBColorspace);
  if (status != MagickFalse)
    ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
  return(MagickTrue);
}
#endif