示例#1
0
/*
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%   W r i t e J P 2 I m a g e                                                 %
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%
%  Method WriteJP2Image writes an image in the JPEG 2000 image format.
%
%  JP2 support originally written by Nathan Brown, [email protected]
%
%  The format of the WriteJP2Image method is:
%
%      MagickPassFail WriteJP2Image(const ImageInfo *image_info,Image *image)
%
%  A description of each parameter follows.
%
%    o status: Method WriteJP2Image return MagickTrue if the image is written.
%      MagickFalse is returned is there is a memory shortage or if the image file
%      fails to write.
%
%    o image_info: Specifies a pointer to a ImageInfo structure.
%
%    o image:  A pointer to an Image structure.
%
%
*/
static MagickPassFail
WriteJP2Image(const ImageInfo *image_info,Image *image)
{
  char
    magick[MaxTextExtent],
    option_keyval[MaxTextExtent],
    *options = NULL;

  int
    format;

  long
    y;

  jas_image_cmptparm_t
    component_info;

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *jp2_pixels;

  jas_stream_t
    *jp2_stream;

  register const PixelPacket
    *p;

  register int
    x;

  unsigned int
    rate_specified=False,
    status;

  int
    component,
    number_components;

  unsigned short
    *lut;

  ImageCharacteristics
    characteristics;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
  if (status == False)
    ThrowWriterException(FileOpenError,UnableToOpenFile,image);

  /*
    Ensure that image is in RGB space.
  */
  (void) TransformColorspace(image,RGBColorspace);

  /*
    Analyze image to be written.
  */
  if (!GetImageCharacteristics(image,&characteristics,
                               (OptimizeType == image_info->type),
                               &image->exception))
    {
      CloseBlob(image);
      return MagickFail;
    }

  /*
    Obtain a JP2 stream.
  */
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowWriterException(DelegateError,UnableToManageJP2Stream,image);
  number_components=image->matte ? 4 : 3;
  if ((image_info->type != TrueColorType) &&
      (characteristics.grayscale))
    number_components=1;

  jp2_image=jas_image_create0();
  if (jp2_image == (jas_image_t *) NULL)
    ThrowWriterException(DelegateError,UnableToCreateImage,image);

  for (component=0; component < number_components; component++)
  {
    (void) memset((void *)&component_info,0,sizeof(jas_image_cmptparm_t));
    component_info.tlx=0; /* top left x ordinate */
    component_info.tly=0; /* top left y ordinate */
    component_info.hstep=1; /* horizontal pixels per step */
    component_info.vstep=1; /* vertical pixels per step */
    component_info.width=(unsigned int) image->columns;
    component_info.height=(unsigned int) image->rows;
    component_info.prec=(unsigned int) Max(2,Min(image->depth,16)); /* bits in range */
    component_info.sgnd = false;  /* range is signed value? */

    if (jas_image_addcmpt(jp2_image, component,&component_info)) {
      jas_image_destroy(jp2_image);
      ThrowWriterException(DelegateError,UnableToCreateImageComponent,image);
    }
  }

  /*
    Allocate and compute LUT.
  */
  {
    unsigned long
      i,
      max_value;

    double
      scale_to_component;

    lut=MagickAllocateArray(unsigned short *,MaxMap+1,sizeof(*lut));
    if (lut == (unsigned short *) NULL)
      {
	jas_image_destroy(jp2_image);
	ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image);
      }

    max_value=MaxValueGivenBits(component_info.prec);
    scale_to_component=max_value/MaxRGBDouble;
    for(i=0; i <= MaxMap; i++)
	lut[i]=scale_to_component*i+0.5;
  }

  if (number_components == 1)
    {
      /* FIXME: If image has an attached ICC profile, then the profile
         should be transferred and the image colorspace set to
         JAS_CLRSPC_GENGRAY */
      /* sRGB Grayscale */
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting SGRAY colorspace");
      jas_image_setclrspc(jp2_image, JAS_CLRSPC_SGRAY);
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting GRAY channel to channel 0");
      jas_image_setcmpttype(jp2_image,0,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
    }
  else
    {
      /* FIXME: If image has an attached ICC profile, then the profile
         should be transferred and the image colorspace set to
         JAS_CLRSPC_GENRGB */

      /* sRGB */
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting SRGB colorspace");
      jas_image_setclrspc(jp2_image, JAS_CLRSPC_SRGB);
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting RED channel to channel 0");
      jas_image_setcmpttype(jp2_image,0,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting GREEN channel to channel 1");
      jas_image_setcmpttype(jp2_image,1,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Setting BLUE channel to channel 2");
      jas_image_setcmpttype(jp2_image,2,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
      if (number_components == 4 )
        {
          (void) LogMagickEvent(CoderEvent,GetMagickModule(),
            "Setting OPACITY channel to channel 3");
          jas_image_setcmpttype(jp2_image,3,
            JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_OPACITY));
        }
    }
  /*
    Convert to JPEG 2000 pixels.
  */
  jp2_pixels=jas_matrix_create(1,(unsigned int) image->columns);
  if (jp2_pixels == (jas_matrix_t *) NULL)
    {
      MagickFreeMemory(lut);
      jas_image_destroy(jp2_image);
      ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image);
    }

  for (y=0; y < (long) image->rows; y++)
  {
    p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
    if (p == (const PixelPacket *) NULL)
      break;
    if (number_components == 1)
      {
	for (x=0; x < (long) image->columns; x++)
	  jas_matrix_setv(jp2_pixels,x,lut[ScaleQuantumToMap(PixelIntensityToQuantum(&p[x]))]);
	(void) jas_image_writecmpt(jp2_image,0,0,(unsigned int) y,
				   (unsigned int) image->columns,1,jp2_pixels);
      }
    else
      {
	for (x=0; x < (long) image->columns; x++)
	  jas_matrix_setv(jp2_pixels,x,lut[ScaleQuantumToMap(p[x].red)]);
	(void) jas_image_writecmpt(jp2_image,0,0,(unsigned int) y,
				   (unsigned int) image->columns,1,jp2_pixels);

	for (x=0; x < (long) image->columns; x++)
	  jas_matrix_setv(jp2_pixels,x,lut[ScaleQuantumToMap(p[x].green)]);
	(void) jas_image_writecmpt(jp2_image,1,0,(unsigned int) y,
				   (unsigned int) image->columns,1,jp2_pixels);

	for (x=0; x < (long) image->columns; x++)
	  jas_matrix_setv(jp2_pixels,x,lut[ScaleQuantumToMap(p[x].blue)]);
	(void) jas_image_writecmpt(jp2_image,2,0,(unsigned int) y,
				   (unsigned int) image->columns,1,jp2_pixels);

	if (number_components > 3)
	  for (x=0; x < (long) image->columns; x++)
	    jas_matrix_setv(jp2_pixels,x,lut[ScaleQuantumToMap(MaxRGB-p[x].opacity)]);
	(void) jas_image_writecmpt(jp2_image,3,0,(unsigned int) y,
				   (unsigned int) image->columns,1,jp2_pixels);
      }
    if (image->previous == (Image *) NULL)
      if (QuantumTick(y,image->rows))
        if (!MagickMonitorFormatted(y,image->rows,&image->exception,
                                    SaveImageText,image->filename,
				    image->columns,image->rows))
          break;
  }
  (void) strlcpy(magick,image_info->magick,MaxTextExtent);
  /*
    J2C is an alias for JPC but Jasper only supports "JPC".
  */
  if (LocaleCompare(magick,"j2c") == 0)
    (void) strlcpy(magick,"jpc",sizeof(magick));
  LocaleLower(magick);
  format=jas_image_strtofmt(magick);

  /*
    Support passing Jasper options.
  */
  {
    const char
      **option_name;

    static const char *jasper_options[] =
      {
        "imgareatlx",
        "imgareatly",
        "tilegrdtlx",
        "tilegrdtly",
        "tilewidth",
        "tileheight",
        "prcwidth",
        "prcheight",
        "cblkwidth",
        "cblkheight",
        "mode",
        "ilyrrates",
        "prg",
        "nomct",
        "numrlvls",
        "sop",
        "eph",
        "lazy",
        "rate",
        "termall",
        "segsym",
        "vcausal",
        "pterm",
        "resetprob",
        "numgbits",
        NULL
      };
    for (option_name = jasper_options; *option_name != NULL; option_name++)
      {
        const char
          *value;

        if ((value=AccessDefinition(image_info,"jp2",*option_name)) != NULL)
          {
            if(LocaleCompare(*option_name,"rate") == 0)
              rate_specified=True;
            FormatString(option_keyval,"%s=%.1024s ",*option_name,value);
            ConcatenateString(&options,option_keyval);
          }
      }
  }
  /*
    Provide an emulation of IJG JPEG "quality" by default.
  */
  if (rate_specified == False)
    {
      double
        rate=1.0;
      
      /*
        A rough approximation to JPEG v1 quality using JPEG-2000.
        Default "quality" 75 results in a request for 16:1 compression, which
        results in image sizes approximating that of JPEG v1.
      */
      if ((image_info->quality < 99.5) && (image->rows*image->columns > 2500))
        {
          double
            header_size,
            current_size,
            target_size,
            d;
          
          d=115-image_info->quality;  /* Best number is 110-115 */
          rate=100.0/(d*d);
          header_size=550.0; /* Base file size. */
          header_size+=(number_components-1)*142; /* Additional components */
          /* FIXME: Need to account for any ICC profiles here */
          
          current_size=(double)((image->rows*image->columns*image->depth)/8)*
            number_components;
          target_size=(current_size*rate)+header_size;
          rate=target_size/current_size;
        }
      FormatString(option_keyval,"%s=%g ","rate",rate);
      ConcatenateString(&options,option_keyval);
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "Compression rate: %g (%3.2f:1)",rate,1.0/rate);
    }
  if (options)
    (void) LogMagickEvent(CoderEvent,GetMagickModule(),
       "Jasper options: \"%s\"", options);

  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Encoding image");
  status=jas_image_encode(jp2_image,jp2_stream,format,options);
  (void) jas_stream_close(jp2_stream);
  MagickFreeMemory(options);
  MagickFreeMemory(lut);
  jas_matrix_destroy(jp2_pixels);
  jas_image_destroy(jp2_image);
  if (status)
    ThrowWriterException(DelegateError,UnableToEncodeImageFile,image);
  return(True);
}
示例#2
0
static Image *ReadJP2Image(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  long
    y;

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *pixels;

  jas_stream_t
    *jp2_stream;

  register long
    x;

  register PixelPacket
    *q;

  int
    component,
    components[4],
    number_components;

  Quantum
    *channel_lut[4];

  unsigned int
    status;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AllocateImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == False)
    ThrowReaderException(FileOpenError,UnableToOpenFile,image);

  /*
    Obtain a JP2 Stream.
  */
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowReaderException(DelegateError,UnableToManageJP2Stream,image);
  jp2_image=jas_image_decode(jp2_stream,-1,0);
  if (jp2_image == (jas_image_t *) NULL)
    {
      (void) jas_stream_close(jp2_stream);
      ThrowReaderException(DelegateError,UnableToDecodeImageFile,image);
    }

  /*
    Validate that we can handle the image and obtain component
    indexes.
  */
  switch (jas_clrspc_fam(jas_image_clrspc(jp2_image)))
    {
    case JAS_CLRSPC_FAM_RGB:
      {
        if (((components[0]=
	      jas_image_getcmptbytype(jp2_image,
				      JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R))) < 0) ||
            ((components[1]=
	      jas_image_getcmptbytype(jp2_image,
				      JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G))) < 0) ||
            ((components[2]=
	      jas_image_getcmptbytype(jp2_image,
				      JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B))) < 0))
          {
            (void) jas_stream_close(jp2_stream);
            jas_image_destroy(jp2_image);
            ThrowReaderException(CorruptImageError,MissingImageChannel,image);
          }
        number_components=3;
        (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                              "Image is in RGB colorspace family");
        (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                              "RED is in channel %d, GREEN is in channel %d, BLUE is in channel %d",
                              components[0],components[1],components[2]);

        if((components[3]=jas_image_getcmptbytype(jp2_image,
                                                  JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_OPACITY))) > 0)
          {
            image->matte=MagickTrue;
            (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                                  "OPACITY is in channel %d",components[3]);
            number_components++;
          }
        break;
      }
    case JAS_CLRSPC_FAM_GRAY:
      {
        if ((components[0]=
	     jas_image_getcmptbytype(jp2_image,
				     JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y))) < 0)
          {
            (void) jas_stream_close(jp2_stream);
            jas_image_destroy(jp2_image);
            ThrowReaderException(CorruptImageError,MissingImageChannel,image);
          }
        (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                              "Image is in GRAY colorspace family");
        (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                              "GRAY is in channel %d",components[0]);
        number_components=1;
        break;
      }
    case JAS_CLRSPC_FAM_YCBCR:
      {
        components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_Y);
        components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CB);
        components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CR);
        if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
          {
            (void) jas_stream_close(jp2_stream);
            jas_image_destroy(jp2_image);
            ThrowReaderException(CorruptImageError,MissingImageChannel,image);
          }
        number_components=3;
        components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_OPACITY);
        if (components[3] > 0)
          {
            image->matte=True;
            number_components++;
          }
        image->colorspace=YCbCrColorspace;
        (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                              "Image is in YCBCR colorspace family");
        break;
      }
    default:
      {
        (void) jas_stream_close(jp2_stream);
        jas_image_destroy(jp2_image);
        ThrowReaderException(CoderError,ColorspaceModelIsNotSupported,image);
      }
    }
  image->columns=jas_image_width(jp2_image);
  image->rows=jas_image_height(jp2_image);
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                        "columns=%lu rows=%lu components=%d",image->columns,image->rows,
                        number_components);
  for (component=0; component < number_components; component++)
    {
      if(((unsigned long) jas_image_cmptwidth(jp2_image,components[component]) != image->columns) ||
         ((unsigned long) jas_image_cmptheight(jp2_image,components[component]) != image->rows) ||
         (jas_image_cmpttlx(jp2_image, components[component]) != 0) ||
         (jas_image_cmpttly(jp2_image, components[component]) != 0) ||
         (jas_image_cmpthstep(jp2_image, components[component]) != 1) ||
         (jas_image_cmptvstep(jp2_image, components[component]) != 1) ||
         (jas_image_cmptsgnd(jp2_image, components[component]) != false))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CoderError,IrregularChannelGeometryNotSupported,image);
        }
    }

  image->matte=number_components > 3;
  for (component=0; component < number_components; component++)
    {
      unsigned int
	component_depth;

      component_depth=jas_image_cmptprec(jp2_image,components[component]);
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
			    "Component[%d] depth is %u",component,component_depth);
      if (0 == component)
	image->depth=component_depth;
      else
	image->depth=Max(image->depth,component_depth);
    }
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                        "Image depth is %u",image->depth);
  if (image_info->ping)
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      return(image);
    }

  /*
    Allocate Jasper pixels.
  */
  pixels=jas_matrix_create(1,(unsigned int) image->columns);
  if (pixels == (jas_matrix_t *) NULL)
    {
      jas_image_destroy(jp2_image);
      ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
    }

  /*
    Allocate and populate channel LUTs
  */
  for (component=0; component < (long) number_components; component++)
    {
      unsigned long
	component_depth,
	i,
	max_value;

      double
	scale_to_quantum;

      component_depth=jas_image_cmptprec(jp2_image,components[component]);
      max_value=MaxValueGivenBits(component_depth);
      scale_to_quantum=MaxRGBDouble/max_value;
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                            "Channel %d scale is %g", component, scale_to_quantum);
      channel_lut[component]=MagickAllocateArray(Quantum *,max_value+1,sizeof(Quantum));
      if (channel_lut[component] == (Quantum *) NULL)
	{
	  for ( --component; component >= 0; --component)
	    MagickFreeMemory(channel_lut[component]);
	  jas_matrix_destroy(pixels);
	  jas_image_destroy(jp2_image);
	  ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
	}
      for(i=0; i <= max_value; i++)
	(channel_lut[component])[i]=scale_to_quantum*i+0.5;
    }

  /*
    Convert JPEG 2000 pixels.
  */
  for (y=0; y < (long) image->rows; y++)
    {
      q=GetImagePixels(image,0,y,image->columns,1);
      if (q == (PixelPacket *) NULL)
        break;

      if (1 == number_components)
	{
	  /* Grayscale */
	  (void) jas_image_readcmpt(jp2_image,(short) components[0],0,
				    (unsigned int) y,
				    (unsigned int) image->columns,1,pixels);
	  for (x=0; x < (long) image->columns; x++)
	    {
	      q->red=q->green=q->blue=(channel_lut[0])[jas_matrix_getv(pixels,x)];
	      q->opacity=OpaqueOpacity;
	      q++;
	    }
	}
      else
	{
	  /* Red */
	  (void) jas_image_readcmpt(jp2_image,(short) components[0],0,
				    (unsigned int) y,
				    (unsigned int) image->columns,1,pixels);
	  for (x=0; x < (long) image->columns; x++)
	    q[x].red=(channel_lut[0])[jas_matrix_getv(pixels,x)];
	  
	  /* Green */
	  (void) jas_image_readcmpt(jp2_image,(short) components[1],0,
				    (unsigned int) y,
				    (unsigned int) image->columns,1,pixels);
	  for (x=0; x < (long) image->columns; x++)
	    q[x].green=(channel_lut[1])[jas_matrix_getv(pixels,x)];
	  
	  /* Blue */
	  (void) jas_image_readcmpt(jp2_image,(short) components[2],0,
				    (unsigned int) y,
				    (unsigned int) image->columns,1,pixels);
	  for (x=0; x < (long) image->columns; x++)
	    q[x].blue=(channel_lut[2])[jas_matrix_getv(pixels,x)];

	    /* Opacity */
	  if (number_components > 3)
	    {
	      (void) jas_image_readcmpt(jp2_image,(short) components[3],0,
					(unsigned int) y,
					(unsigned int) image->columns,1,pixels);
	      for (x=0; x < (long) image->columns; x++)
		q[x].opacity=MaxRGB-(channel_lut[3])[jas_matrix_getv(pixels,x)];
	    }
	  else
	    {
	      for (x=0; x < (long) image->columns; x++)
		q[x].opacity=OpaqueOpacity;
	    }
        }
      if (!SyncImagePixels(image))
        break;
      if (image->previous == (Image *) NULL)
        if (QuantumTick(y,image->rows))
          if (!MagickMonitorFormatted(y,image->rows,exception,LoadImageText,
                                      image->filename,
				      image->columns,image->rows))
            break;
    }
  if (number_components == 1)
    image->is_grayscale=MagickTrue;
  {
    /*
      Obtain ICC ICM color profile
    */
    
    jas_cmprof_t
      *cm_profile;
    
    /* Obtain a pointer to the existing jas_cmprof_t profile handle. */
    cm_profile=jas_image_cmprof(jp2_image);
    if (cm_profile != (jas_cmprof_t *) NULL)
      {
        jas_iccprof_t
          *icc_profile;

        /* Obtain a copy of the jas_iccprof_t ICC profile handle */
        icc_profile=jas_iccprof_createfromcmprof(cm_profile);
        /* or maybe just icc_profile=cm_profile->iccprof */
        if (icc_profile != (jas_iccprof_t *) NULL)
          {
            jas_stream_t
              *icc_stream;

            icc_stream=jas_stream_memopen(NULL,0);
            if ((icc_stream != (jas_stream_t *) NULL) &&
                (jas_iccprof_save(icc_profile,icc_stream) == 0) &&
                (jas_stream_flush(icc_stream) == 0))
              {
                jas_stream_memobj_t
                  *blob;
                
                blob=(jas_stream_memobj_t *) icc_stream->obj_;
                if (image->logging)
                  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
                                        "ICC profile: %lu bytes",(unsigned long) blob->len_);
                SetImageProfile(image,"ICM",blob->buf_,blob->len_);
                
                (void) jas_stream_close(icc_stream);
                jas_iccprof_destroy(icc_profile);
              }
          }
      }
  }

  for (component=0; component < (long) number_components; component++)
    MagickFreeMemory(channel_lut[component]);
  jas_matrix_destroy(pixels);
  (void) jas_stream_close(jp2_stream);
  jas_image_destroy(jp2_image);
  return(image);
}
示例#3
0
文件: jp2.c 项目: 0xPr0xy/ImageMagick
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   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, [email protected]
%
%  The format of the WriteJP2Image method is:
%
%      MagickBooleanType WriteJP2Image(const ImageInfo *image_info,
%        Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows.
%
%    o image_info: the image info.
%
%    o image:  The image.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
  char
    *key,
    magick[MaxTextExtent],
    *options;

  const char
    *option;

  jas_image_cmptparm_t
    component_info[4];

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *pixels[4];

  jas_stream_t
    *jp2_stream;

  MagickBooleanType
    status;

  QuantumAny
    range;

  register const Quantum
    *p;

  register ssize_t
    i,
    x;

  size_t
    number_components;

  ssize_t
    format,
    y;

  /*
    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);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
  if (status == MagickFalse)
    return(status);
  /*
    Initialize JPEG 2000 API.
  */
  if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
    (void) TransformImageColorspace(image,sRGBColorspace,exception);
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowWriterException(DelegateError,"UnableToManageJP2Stream");
  number_components=image->alpha_trait ? 4UL : 3UL;
  if (IsGrayColorspace(image->colorspace) != MagickFalse)
    number_components=1;
  if ((image->columns != (unsigned int) image->columns) ||
      (image->rows != (unsigned int) image->rows))
    ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
  (void) ResetMagickMemory(&component_info,0,sizeof(component_info));
  for (i=0; i < (ssize_t) number_components; i++)
  {
    component_info[i].tlx=0;
    component_info[i].tly=0;
    component_info[i].hstep=1;
    component_info[i].vstep=1;
    component_info[i].width=(unsigned int) image->columns;
    component_info[i].height=(unsigned int) image->rows;
    component_info[i].prec=(int) MagickMax(MagickMin(image->depth,16),2);
    component_info[i].sgnd=MagickFalse;
  }
  jp2_image=jas_image_create((int) number_components,component_info,
    JAS_CLRSPC_UNKNOWN);
  if (jp2_image == (jas_image_t *) NULL)
    ThrowWriterException(DelegateError,"UnableToCreateImage");
  switch (image->colorspace)
  {
    case RGBColorspace:
    case sRGBColorspace:
    {
      /*
        RGB colorspace.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_SRGB);
      jas_image_setcmpttype(jp2_image,0,
        (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
      jas_image_setcmpttype(jp2_image,1,
        (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
      jas_image_setcmpttype(jp2_image,2,
        (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
      break;
    }
    case GRAYColorspace:
    {
      /*
        Grayscale colorspace.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_SGRAY);
      jas_image_setcmpttype(jp2_image,0,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
      break;
    }
    case YCbCrColorspace:
    {
      /*
        YCbCr colorspace.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_SYCBCR);
      jas_image_setcmpttype(jp2_image,0,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(0));
      jas_image_setcmpttype(jp2_image,1,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(1));
      jas_image_setcmpttype(jp2_image,2,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(2));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
      break;
    }
    case XYZColorspace:
    {
      /*
        XYZ colorspace.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_CIEXYZ);
      jas_image_setcmpttype(jp2_image,0,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(0));
      jas_image_setcmpttype(jp2_image,1,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(1));
      jas_image_setcmpttype(jp2_image,2,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(2));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
      break;
    }
    case LabColorspace:
    {
      /*
        Lab colorspace.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_CIELAB);
      jas_image_setcmpttype(jp2_image,0,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(0));
      jas_image_setcmpttype(jp2_image,1,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(1));
      jas_image_setcmpttype(jp2_image,2,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(2));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
      break;
    }
    default:
    {
      /*
        Unknow.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_UNKNOWN);
      jas_image_setcmpttype(jp2_image,0,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(0));
      jas_image_setcmpttype(jp2_image,1,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(1));
      jas_image_setcmpttype(jp2_image,2,(jas_image_cmpttype_t)
        JAS_IMAGE_CT_COLOR(2));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
      break;
    }
  }
  /*
    Convert to JPEG 2000 pixels.
  */
  for (i=0; i < (ssize_t) number_components; i++)
  {
    pixels[i]=jas_matrix_create(1,(int) image->columns);
    if (pixels[i] == (jas_matrix_t *) NULL)
      {
        for (x=0; x < i; x++)
          jas_matrix_destroy(pixels[x]);
        jas_image_destroy(jp2_image);
        ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  range=GetQuantumRange((size_t) component_info[0].prec);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    p=GetVirtualPixels(image,0,y,image->columns,1,exception);
    if (p == (const Quantum *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      if (number_components == 1)
        jas_matrix_setv(pixels[0],x,(jas_seqent_t) ScaleQuantumToAny(
          GetPixelIntensity(image,p),range));
      else
        {
          jas_matrix_setv(pixels[0],x,(jas_seqent_t) ScaleQuantumToAny(
            GetPixelRed(image,p),range));
          jas_matrix_setv(pixels[1],x,(jas_seqent_t) ScaleQuantumToAny(
            GetPixelGreen(image,p),range));
          jas_matrix_setv(pixels[2],x,(jas_seqent_t) ScaleQuantumToAny(
            GetPixelBlue(image,p),range));
          if (number_components > 3)
            jas_matrix_setv(pixels[3],x,(jas_seqent_t) ScaleQuantumToAny(
              GetPixelAlpha(image,p),range));
        }
      p+=GetPixelChannels(image);
    }
    for (i=0; i < (ssize_t) number_components; i++)
      (void) jas_image_writecmpt(jp2_image,(short) i,0,(unsigned int) y,
        (unsigned int) image->columns,1,pixels[i]);
    status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  (void) CopyMagickString(magick,image_info->magick,MaxTextExtent);
  if (LocaleCompare(magick,"J2C") == 0)
    (void) CopyMagickString(magick,"JPC",MaxTextExtent);
  LocaleLower(magick);
  format=jas_image_strtofmt(magick);
  options=(char *) NULL;
  ResetImageOptionIterator(image_info);
  key=GetNextImageOption(image_info);
  for ( ; key != (char *) NULL; key=GetNextImageOption(image_info))
  {
    option=GetImageOption(image_info,key);
    if (option == (const char *) NULL)
      continue;
    if (LocaleNCompare(key,"jp2:",4) == 0)
      {
        (void) ConcatenateString(&options,key+4);
        if (*option != '\0')
          {
            (void) ConcatenateString(&options,"=");
            (void) ConcatenateString(&options,option);
          }
        (void) ConcatenateString(&options," ");
      }
  }
  option=GetImageOption(image_info,"jp2:rate");
  if ((option == (const char *) NULL) &&
      (image_info->compression != LosslessJPEGCompression) &&
      (image->quality != UndefinedCompressionQuality) &&
      ((double) image->quality <= 99.5) &&
      ((image->rows*image->columns) > 2500))
    {
      char
        option[MaxTextExtent];

      double
        alpha,
        header_size,
        number_pixels,
        rate,
        target_size;

      alpha=115.0-image->quality;
      rate=100.0/(alpha*alpha);
      header_size=550.0;
      header_size+=(number_components-1)*142;
      number_pixels=(double) image->rows*image->columns*number_components*
        (GetImageQuantumDepth(image,MagickTrue)/8);
      target_size=(number_pixels*rate)+header_size;
      rate=target_size/number_pixels;
      (void) FormatLocaleString(option,MaxTextExtent,"rate=%g",rate);
      (void) ConcatenateString(&options,option);
    }
  status=jas_image_encode(jp2_image,jp2_stream,format,options) != 0 ?
    MagickTrue : MagickFalse;
  if (options != (char *) NULL)
    options=DestroyString(options);
  (void) jas_stream_close(jp2_stream);
  for (i=0; i < (ssize_t) number_components; i++)
    jas_matrix_destroy(pixels[i]);
  jas_image_destroy(jp2_image);
  if (status != MagickFalse)
    ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
  return(MagickTrue);
}
示例#4
0
文件: jp2.c 项目: 0xPr0xy/ImageMagick
static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
{
  Image
    *image;

  jas_cmprof_t
    *cm_profile;

  jas_iccprof_t
    *icc_profile;

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *pixels[4];

  jas_stream_t
    *jp2_stream;

  MagickBooleanType
    status;

  QuantumAny
    pixel,
    range[4];

  register Quantum
    *q;

  register ssize_t
    i,
    x;

  size_t
    maximum_component_depth,
    number_components,
    x_step[4],
    y_step[4];

  ssize_t
    components[4],
    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,exception);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Initialize JPEG 2000 API.
  */
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
  jp2_image=jas_image_decode(jp2_stream,-1,0);
  if (jp2_image == (jas_image_t *) NULL)
    {
      (void) jas_stream_close(jp2_stream);
      ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
    }
  image->columns=jas_image_width(jp2_image);
  image->rows=jas_image_height(jp2_image);
  image->compression=JPEG2000Compression;
  switch (jas_clrspc_fam(jas_image_clrspc(jp2_image)))
  {
    case JAS_CLRSPC_FAM_RGB:
    {
      SetImageColorspace(image,RGBColorspace,exception);
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_R);
      components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_G);
      components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_B);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,3);
      if (components[3] > 0)
        {
          image->alpha_trait=BlendPixelTrait;
          number_components++;
        }
      break;
    }
    case JAS_CLRSPC_FAM_GRAY:
    {
      SetImageColorspace(image,GRAYColorspace,exception);
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_GRAY_Y);
      if (components[0] < 0)
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=1;
      break;
    }
    case JAS_CLRSPC_FAM_YCBCR:
    {
      SetImageColorspace(image,YCbCrColorspace,exception);
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_Y);
      components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CB);
      components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CR);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN);
      if (components[3] > 0)
        {
          image->alpha_trait=BlendPixelTrait;
          number_components++;
        }
      break;
    }
    case JAS_CLRSPC_FAM_XYZ:
    {
      SetImageColorspace(image,XYZColorspace,exception);
      components[0]=jas_image_getcmptbytype(jp2_image,0);
      components[1]=jas_image_getcmptbytype(jp2_image,1);
      components[2]=jas_image_getcmptbytype(jp2_image,2);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN);
      if (components[3] > 0)
        {
          image->alpha_trait=BlendPixelTrait;
          number_components++;
        }
      break;
    }
    case JAS_CLRSPC_FAM_LAB:
    {
      SetImageColorspace(image,LabColorspace,exception);
      components[0]=jas_image_getcmptbytype(jp2_image,0);
      components[1]=jas_image_getcmptbytype(jp2_image,1);
      components[2]=jas_image_getcmptbytype(jp2_image,2);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN);
      if (components[3] > 0)
        {
          image->alpha_trait=BlendPixelTrait;
          number_components++;
        }
      break;
    }
    default:
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported");
    }
  }
  for (i=0; i < (ssize_t) number_components; i++)
  {
    size_t
      height,
      width;

    width=(size_t) (jas_image_cmptwidth(jp2_image,components[i])*
      jas_image_cmpthstep(jp2_image,components[i]));
    height=(size_t) (jas_image_cmptheight(jp2_image,components[i])*
      jas_image_cmptvstep(jp2_image,components[i]));
    x_step[i]=(unsigned int) jas_image_cmpthstep(jp2_image,components[i]);
    y_step[i]=(unsigned int) jas_image_cmptvstep(jp2_image,components[i]);
    if ((width != image->columns) || (height != image->rows) ||
        (jas_image_cmpttlx(jp2_image,components[i]) != 0) ||
        (jas_image_cmpttly(jp2_image,components[i]) != 0) ||
        (jas_image_cmptsgnd(jp2_image,components[i]) != MagickFalse))
      {
        (void) jas_stream_close(jp2_stream);
        jas_image_destroy(jp2_image);
        ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported");
      }
  }
  /*
    Convert JPEG 2000 pixels.
  */
  image->alpha_trait=number_components > 3 ? BlendPixelTrait :
    UndefinedPixelTrait;
  maximum_component_depth=0;
  for (i=0; i < (ssize_t) number_components; i++)
  {
    maximum_component_depth=(unsigned int) MagickMax((size_t)
      jas_image_cmptprec(jp2_image,components[i]),(size_t)
      maximum_component_depth);
    pixels[i]=jas_matrix_create(1,(int) (image->columns/x_step[i]));
    if (pixels[i] == (jas_matrix_t *) NULL)
      {
        for (--i; i >= 0; i--)
          jas_matrix_destroy(pixels[i]);
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  image->depth=maximum_component_depth;
  if (image_info->ping != MagickFalse)
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      return(GetFirstImageInList(image));
    }
  for (i=0; i < (ssize_t) number_components; i++)
    range[i]=GetQuantumRange((size_t) jas_image_cmptprec(jp2_image,
      components[i]));
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (i=0; i < (ssize_t) number_components; i++)
      (void) jas_image_readcmpt(jp2_image,(short) components[i],0,
        (jas_image_coord_t) (y/y_step[i]),(jas_image_coord_t) (image->columns/
        x_step[i]),1,pixels[i]);
    switch (number_components)
    {
      case 1:
      {
        /*
          Grayscale.
        */
        for (x=0; x < (ssize_t) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          SetPixelGray(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
          q+=GetPixelChannels(image);
        }
        break;
      }
      case 3:
      {
        /*
          RGB.
        */
        for (x=0; x < (ssize_t) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
          SetPixelGreen(image,ScaleAnyToQuantum((QuantumAny) pixel,range[1]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
          SetPixelBlue(image,ScaleAnyToQuantum((QuantumAny) pixel,range[2]),q);
          q+=GetPixelChannels(image);
        }
        break;
      }
      case 4:
      {
        /*
          RGBA.
        */
        for (x=0; x < (ssize_t) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
          SetPixelGreen(image,ScaleAnyToQuantum((QuantumAny) pixel,range[1]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
          SetPixelBlue(image,ScaleAnyToQuantum((QuantumAny) pixel,range[2]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[3],x/x_step[3]);
          SetPixelAlpha(image,ScaleAnyToQuantum((QuantumAny) pixel,range[3]),q);
          q+=GetPixelChannels(image);
        }
        break;
      }
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  cm_profile=jas_image_cmprof(jp2_image);
  icc_profile=(jas_iccprof_t *) NULL;
  if (cm_profile != (jas_cmprof_t *) NULL)
    icc_profile=jas_iccprof_createfromcmprof(cm_profile);
  if (icc_profile != (jas_iccprof_t *) NULL)
    {
      jas_stream_t
        *icc_stream;

      icc_stream=jas_stream_memopen(NULL,0);
      if ((icc_stream != (jas_stream_t *) NULL) &&
          (jas_iccprof_save(icc_profile,icc_stream) == 0) &&
          (jas_stream_flush(icc_stream) == 0))
        {
          jas_stream_memobj_t
            *blob;

          StringInfo
            *icc_profile,
            *profile;

          /*
            Extract the icc profile, handle errors without much noise.
          */
          blob=(jas_stream_memobj_t *) icc_stream->obj_;
          if (image->debug != MagickFalse)
            (void) LogMagickEvent(CoderEvent,GetMagickModule(),
              "Profile: ICC, %.20g bytes",(double) blob->len_);
          profile=BlobToStringInfo(blob->buf_,blob->len_);
          if (profile == (StringInfo *) NULL)
            ThrowReaderException(CorruptImageError,"MemoryAllocationFailed");
          icc_profile=(StringInfo *) GetImageProfile(image,"icc");
          if (icc_profile == (StringInfo *) NULL)
            (void) SetImageProfile(image,"icc",profile,exception);
          else
            (void) ConcatenateStringInfo(icc_profile,profile);
          profile=DestroyStringInfo(profile);
          (void) jas_stream_close(icc_stream);
        }
    }
  (void) jas_stream_close(jp2_stream);
  jas_image_destroy(jp2_image);
  for (i=0; i < (ssize_t) number_components; i++)
    jas_matrix_destroy(pixels[i]);
  return(GetFirstImageInList(image));
}
示例#5
0
文件: jp2.c 项目: 0xPr0xy/ImageMagick
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   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, [email protected]
%
%  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)
{
  char
    *key,
    magick[MaxTextExtent],
    *options;

  const char
    *option;

  long
    format,
    y;

  jas_image_cmptparm_t
    component_info[4];

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *pixels[4];

  jas_stream_t
    *jp2_stream;

  MagickBooleanType
    status;

  QuantumAny
    range;

  register const PixelPacket
    *p;

  register long
    i,
    x;

  unsigned short
    *map;

  unsigned long
    number_components;

  /*
    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);
  /*
    Intialize JPEG 2000 API.
  */
  if (image->colorspace != RGBColorspace)
    (void) TransformImageColorspace(image,RGBColorspace);
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowWriterException(DelegateError,"UnableToManageJP2Stream");
  number_components=image->matte ? 4UL : 3UL;
  if ((image_info->type != TrueColorType) &&
      IsGrayImage(image,&image->exception))
    number_components=1;
  if ((image->columns != (unsigned int) image->columns) ||
      (image->rows != (unsigned int) image->rows))
    ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
  (void) ResetMagickMemory(&component_info,0,sizeof(component_info));
  for (i=0; i < (long) number_components; i++)
  {
    component_info[i].tlx=0;
    component_info[i].tly=0;
    component_info[i].hstep=1;
    component_info[i].vstep=1;
    component_info[i].width=(unsigned int) image->columns;
    component_info[i].height=(unsigned int) image->rows;
    component_info[i].prec=(int) MagickMax(MagickMin(image->depth,16),2);
    component_info[i].sgnd=MagickFalse;
    
  }
  jp2_image=jas_image_create((int) number_components,component_info,
    JAS_CLRSPC_UNKNOWN);
  if (jp2_image == (jas_image_t *) NULL)
    ThrowWriterException(DelegateError,"UnableToCreateImage");
  if (number_components == 1)
    {
      /*
        sRGB Grayscale.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_SGRAY);
      jas_image_setcmpttype(jp2_image,0,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
    }
  else
    {
      /*
        sRGB.
      */
      jas_image_setclrspc(jp2_image,JAS_CLRSPC_SRGB);
      jas_image_setcmpttype(jp2_image,0,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
      jas_image_setcmpttype(jp2_image,1,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
      jas_image_setcmpttype(jp2_image,2,
        JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
      if (number_components == 4)
        jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY);
    }
  /*
    Convert to JPEG 2000 pixels.
  */
  for (i=0; i < (long) number_components; i++)
  {
    pixels[i]=jas_matrix_create(1,(int) image->columns);
    if (pixels[i] == (jas_matrix_t *) NULL)
      {
        for (x=0; x < i; x++)
          jas_matrix_destroy(pixels[x]);
        jas_image_destroy(jp2_image);
        ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  range=GetQuantumRange((unsigned long) component_info[0].prec);
  map=(unsigned short *) AcquireQuantumMemory(MaxMap+1,sizeof(*map));
  for (i=0; i <= (long) MaxMap; i++)
    map[i]=(unsigned short) ScaleQuantumToMap((Quantum)
      ScaleQuantumToAny((Quantum) i,range));
  if (map == (unsigned short *) NULL)
    {
      for (i=0; i < (long) number_components; i++)
        jas_matrix_destroy(pixels[i]);
      jas_image_destroy(jp2_image);
      ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
    }
  for (y=0; y < (long) image->rows; y++)
  {
    p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
    if (p == (const PixelPacket *) NULL)
      break;
    for (x=0; x < (long) image->columns; x++)
    {
      if (number_components == 1)
        jas_matrix_setv(pixels[0],x,map[ScaleQuantumToMap(
          PixelIntensityToQuantum(p))]);
      else
        {
          jas_matrix_setv(pixels[0],x,map[ScaleQuantumToMap(p->red)]);
          jas_matrix_setv(pixels[1],x,map[ScaleQuantumToMap(p->green)]);
          jas_matrix_setv(pixels[2],x,map[ScaleQuantumToMap(p->blue)]);
          if (number_components > 3)
            jas_matrix_setv(pixels[3],x,map[ScaleQuantumToMap((Quantum)
              (QuantumRange-p->opacity))]);
        }
      p++;
    }
    for (i=0; i < (long) number_components; i++)
      (void) jas_image_writecmpt(jp2_image,(short) i,0,(unsigned int) y,
        (unsigned int) image->columns,1,pixels[i]);
    status=SetImageProgress(image,SaveImageTag,y,image->rows);
    if (status == MagickFalse)
      break;
  }
  map=(unsigned short *) RelinquishMagickMemory(map);
  (void) CopyMagickString(magick,image_info->magick,MaxTextExtent);
  LocaleLower(magick);
  format=jas_image_strtofmt(magick);
  options=(char *) NULL;
  ResetImageOptionIterator(image_info);
  key=GetNextImageOption(image_info);
  while (key != (char *) NULL)
  {
    option=GetImageOption(image_info,key);
    if (option != (const char *) NULL)
      {
        if (LocaleNCompare(key,"jp2:",4) == 0)
          {
            (void) ConcatenateString(&options,key+4);
            if (*option != '\0')
              {
                (void) ConcatenateString(&options,"=");
                (void) ConcatenateString(&options,option);
              }
            (void) ConcatenateString(&options," ");
          }
       }
    key=GetNextImageOption(image_info);
  }
  option=GetImageOption(image_info,"jp2:rate");
  if ((option == (const char *) NULL) &&
      (image_info->compression != LosslessJPEGCompression) &&
      (image->quality != UndefinedCompressionQuality) &&
      ((double) image->quality <= 99.5) &&
      ((image->rows*image->columns) > 2500))
    {
      char
        option[MaxTextExtent];

      double
        alpha,
        header_size,
        number_pixels,
        rate,
        target_size;

      alpha=115.0-image->quality;
      rate=100.0/(alpha*alpha);
      header_size=550.0;
      header_size+=(number_components-1)*142;
      number_pixels=(double) image->rows*image->columns*number_components*
        (GetImageQuantumDepth(image,MagickTrue)/8);
      target_size=(number_pixels*rate)+header_size;
      rate=target_size/number_pixels;
      (void) FormatMagickString(option,MaxTextExtent,"rate=%g",rate);
      (void) ConcatenateString(&options,option);
    }
  status=jas_image_encode(jp2_image,jp2_stream,format,options) != 0 ?
    MagickTrue : MagickFalse;
  (void) jas_stream_close(jp2_stream);
  for (i=0; i < (long) number_components; i++)
    jas_matrix_destroy(pixels[i]);
  jas_image_destroy(jp2_image);
  if (status != MagickFalse)
    ThrowWriterException(DelegateError,"UnableToEncodeImageFile");
  return(MagickTrue);
}
示例#6
0
文件: jp2.c 项目: 0xPr0xy/ImageMagick
static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
{
  Image
    *image;

  jas_cmprof_t
    *cm_profile;

  jas_iccprof_t
    *icc_profile;

  jas_image_t
    *jp2_image;

  jas_matrix_t
    *pixels[4];

  jas_stream_t
    *jp2_stream;

  long
    components[4],
    y;

  MagickBooleanType
    status;

  QuantumAny
    pixel,
    *map[4],
    range;

  register long
    i,
    x;

  register PixelPacket
    *q;

  unsigned long
    maximum_component_depth,
    number_components,
    x_step[4],
    y_step[4];

  /*
    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 JPEG 2000 API.
  */
  jp2_stream=JP2StreamManager(image);
  if (jp2_stream == (jas_stream_t *) NULL)
    ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
  jp2_image=jas_image_decode(jp2_stream,-1,0);
  if (jp2_image == (jas_image_t *) NULL)
    {
      (void) jas_stream_close(jp2_stream);
      ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
    }
  switch (jas_clrspc_fam(jas_image_clrspc(jp2_image)))
  {
    case JAS_CLRSPC_FAM_RGB:
    {
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_R);
      components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_G);
      components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_B);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,3);
      if (components[3] > 0)
        {
          image->matte=MagickTrue;
          number_components++;
        }
      break;
    }
    case JAS_CLRSPC_FAM_GRAY:
    {
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_GRAY_Y);
      if (components[0] < 0)
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=1;
      break;
    }
    case JAS_CLRSPC_FAM_YCBCR:
    {
      components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_Y);
      components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CB);
      components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CR);
      if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
        {
          (void) jas_stream_close(jp2_stream);
          jas_image_destroy(jp2_image);
          ThrowReaderException(CorruptImageError,"MissingImageChannel");
        }
      number_components=3;
      components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN);
      if (components[3] > 0)
        {
          image->matte=MagickTrue;
          number_components++;
        }
      image->colorspace=YCbCrColorspace;
      break;
    }
    default:
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported");
    }
  }
  image->columns=jas_image_width(jp2_image);
  image->rows=jas_image_height(jp2_image);
  image->compression=JPEG2000Compression;
  for (i=0; i < (long) number_components; i++)
  {
    unsigned long
      height,
      width;

    width=(unsigned long) (jas_image_cmptwidth(jp2_image,components[i])*
      jas_image_cmpthstep(jp2_image,components[i]));
    height=(unsigned long) (jas_image_cmptheight(jp2_image,components[i])*
      jas_image_cmptvstep(jp2_image,components[i]));
    x_step[i]=(unsigned int) jas_image_cmpthstep(jp2_image,components[i]);
    y_step[i]=(unsigned int) jas_image_cmptvstep(jp2_image,components[i]);
    if ((width != image->columns) || (height != image->rows) ||
        (jas_image_cmpttlx(jp2_image,components[i]) != 0) ||
        (jas_image_cmpttly(jp2_image,components[i]) != 0) ||
        (x_step[i] != 1) || (y_step[i] != 1) ||
        (jas_image_cmptsgnd(jp2_image,components[i]) != MagickFalse))
      {
        (void) jas_stream_close(jp2_stream);
        jas_image_destroy(jp2_image);
        ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported");
      }
  }
  /*
    Convert JPEG 2000 pixels.
  */
  image->matte=number_components > 3 ? MagickTrue : MagickFalse;
  maximum_component_depth=0;
  for (i=0; i < (long) number_components; i++)
  {
    maximum_component_depth=(unsigned int) MagickMax((size_t)
      jas_image_cmptprec(jp2_image,components[i]),(size_t)
      maximum_component_depth);
    pixels[i]=jas_matrix_create(1,(int) (image->columns/x_step[i]));
    if (pixels[i] == (jas_matrix_t *) NULL)
      {
        for (--i; i >= 0; i--)
          jas_matrix_destroy(pixels[i]);
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  image->depth=maximum_component_depth;
  if (image_info->ping != MagickFalse)
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      return(GetFirstImageInList(image));
    }
  for (i=0; i < (long) number_components; i++)
  {
    long
      j;

    map[i]=(QuantumAny *) AcquireQuantumMemory(MaxMap+1,sizeof(**map));
    if (map[i] == (QuantumAny *) NULL)
      {
        for (--i; i >= 0; i--)
          map[i]=(QuantumAny *) RelinquishMagickMemory(map[i]);
        for (i=0; i < (long) number_components; i++)
          jas_matrix_destroy(pixels[i]);
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
    range=GetQuantumRange((unsigned long) jas_image_cmptprec(jp2_image,
      components[i]));
    for (j=0; j <= (long) MaxMap; j++)
      map[i][j]=ScaleQuantumToMap(ScaleAnyToQuantum((QuantumAny) j,range));
  }
  for (y=0; y < (long) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    for (i=0; i < (long) number_components; i++)
      (void) jas_image_readcmpt(jp2_image,(short) components[i],0,
        ((unsigned int) y)/y_step[i],((unsigned int) image->columns)/x_step[i],
        1,pixels[i]);
    switch (number_components)
    {
      case 1:
      {
        /*
          Grayscale.
        */
        for (x=0; x < (long) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          q->red=(Quantum) map[0][pixel];
          q->green=q->red;
          q->blue=q->red;
          q++;
        }
        break;
      }
      case 3:
      {
        /*
          RGB.
        */
        for (x=0; x < (long) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          q->red=(Quantum) map[0][pixel];
          pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
          q->green=(Quantum) map[1][pixel];
          pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
          q->blue=(Quantum) map[2][pixel];
          q++;
        }
        break;
      }
      case 4:
      {
        /*
          RGBA.
        */
        for (x=0; x < (long) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          q->red=(Quantum) map[0][pixel];
          pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
          q->green=(Quantum) map[1][pixel];
          pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]);
          q->blue=(Quantum) map[2][pixel];
          pixel=(QuantumAny) jas_matrix_getv(pixels[3],x/x_step[3]);
          q->opacity=(Quantum) (QuantumRange-map[3][pixel]);
          q++;
        }
        break;
      }
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,y,image->rows);
    if (status == MagickFalse)
      break;
  }
  for (i=0; i < (long) number_components; i++)
    map[i]=(QuantumAny *) RelinquishMagickMemory(map[i]);
  cm_profile=jas_image_cmprof(jp2_image);
  icc_profile=(jas_iccprof_t *) NULL;
  if (cm_profile != (jas_cmprof_t *) NULL)
    icc_profile=jas_iccprof_createfromcmprof(cm_profile);
  if (icc_profile != (jas_iccprof_t *) NULL)
    {
      jas_stream_t
        *icc_stream;

      icc_stream=jas_stream_memopen(NULL,0);
      if ((icc_stream != (jas_stream_t *) NULL) &&
          (jas_iccprof_save(icc_profile,icc_stream) == 0) &&
          (jas_stream_flush(icc_stream) == 0))
        {
          StringInfo
            *icc_profile,
            *profile;

          jas_stream_memobj_t
            *blob;

          /*
            Extract the icc profile, handle errors without much noise.
          */
          blob=(jas_stream_memobj_t *) icc_stream->obj_;
          if (image->debug != MagickFalse)
            (void) LogMagickEvent(CoderEvent,GetMagickModule(),
              "Profile: ICC, %lu bytes",(unsigned long) blob->len_);
          profile=AcquireStringInfo(blob->len_);
          SetStringInfoDatum(profile,blob->buf_);
          icc_profile=(StringInfo *) GetImageProfile(image,"icc");
          if (icc_profile == (StringInfo *) NULL)
            (void) SetImageProfile(image,"icc",profile);
          else
            (void) ConcatenateStringInfo(icc_profile,profile);
          profile=DestroyStringInfo(profile);
          (void) jas_stream_close(icc_stream);
        }
    }
  (void) jas_stream_close(jp2_stream);
  jas_image_destroy(jp2_image);
  for (i=0; i < (long) number_components; i++)
    jas_matrix_destroy(pixels[i]);
  return(GetFirstImageInList(image));
}