C++ SetImageInfoBlob函数代码示例

/*
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%   R e a d D O T I m a g e                                                   %
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%
%  ReadDOTImage() reads a Graphviz image file and returns it.  It allocates
%  the memory necessary for the new Image structure and returns a pointer to
%  the new image.
%
%  The format of the ReadDOTImage method is:
%
%      Image *ReadDOTImage(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.
%
*/
static Image *ReadDOTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    command[MaxTextExtent];

  const char
    *option;

  graph_t
    *graph;

  Image
    *image;

  ImageInfo
    *read_info;

  MagickBooleanType
    status;

  /*
    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)
    return((Image *) NULL);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) CopyMagickString(read_info->magick,"SVG",MaxTextExtent);
  (void) AcquireUniqueFilename(read_info->filename);
  (void) FormatLocaleString(command,MaxTextExtent,"-Tsvg -o%s %s",
    read_info->filename,image_info->filename);
  graph=agread(GetBlobFileHandle(image));
  if (graph == (graph_t *) NULL)
    return ((Image *) NULL);
  option=GetImageOption(image_info,"dot:layout-engine");
  if (option == (const char *) NULL)
    gvLayout(graphic_context,graph,(char *) "dot");
  else
    gvLayout(graphic_context,graph,(char *) option);
  gvRenderFilename(graphic_context,graph,(char *) "svg",read_info->filename);
  gvFreeLayout(graphic_context,graph);
  /*
    Read SVG graph.
  */
  image=ReadImage(read_info,exception);
  (void) RelinquishUniqueFileResource(read_info->filename);
  read_info=DestroyImageInfo(read_info);
  if (image == (Image *) NULL)
    return((Image *) NULL);
  return(GetFirstImageInList(image));
}

/*
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%   R e a d M A S K I m a g e                                                 %
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%
%  ReadMASKImage returns the image mask associated with the image.
%
%  The format of the ReadMASKImage method is:
%
%      Image *ReadMASKImage(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.
%
*/
static Image *ReadMASKImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  ImageInfo
    *read_info;

  /*
    Initialize Image structure.
  */
  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);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (image != (Image *) NULL)
    {
      MagickBooleanType
        status;

      status=GrayscaleImage(image,image->intensity,exception);
      if (status == MagickFalse)
        image=DestroyImage(image);
    }
  return(GetFirstImageInList(image));
}

static Image* FaxReadG4(Image *image,const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    filename[MagickPathExtent];

  ImageInfo
    *read_info;

  filename[0]='\0';
  if (ImageToFile(image,filename,exception) == MagickFalse)
    ThrowImageException(FileOpenError,"UnableToCreateTemporaryFile");
  (void) CloseBlob(image);
  image=DestroyImage(image);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) FormatLocaleString(read_info->filename,MagickPathExtent,"group4:%s",
    filename);
  read_info->orientation=TopLeftOrientation;
  image=ReadImage(read_info,exception);
  if (image != (Image *) NULL)
    {
      (void) CopyMagickString(image->filename,image_info->filename,
        MagickPathExtent);
      (void) CopyMagickString(image->magick_filename,image_info->filename,
        MagickPathExtent);
      (void) CopyMagickString(image->magick,"G4",MagickPathExtent);
    }
  read_info=DestroyImageInfo(read_info);
  (void) RelinquishUniqueFileResource(filename);
  return(GetFirstImageInList(image));
}

/*
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%   R e a d T I L E I m a g e                                                 %
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%
%  ReadTILEImage tiles a texture on an image.  It allocates the
%  memory necessary for the new Image structure and returns a pointer to the
%  new image.
%
%  The format of the ReadTILEImage method is:
%
%      Image *ReadTILEImage(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.
%
*/
static Image *ReadTILEImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image,
    *tile_image;

  ImageInfo
    *read_info;

  MagickBooleanType
    status;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickCoreSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickCoreSignature);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  tile_image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (tile_image == (Image *) NULL)
    return((Image *) NULL);
  image=AcquireImage(image_info,exception);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  if (*image_info->filename == '\0')
    ThrowReaderException(OptionError,"MustSpecifyAnImageName");
  status=SetImageExtent(image,image->columns,image->rows,exception);
  if (status == MagickFalse)
    return(DestroyImageList(image));
  image->colorspace=tile_image->colorspace;
  image->alpha_trait=tile_image->alpha_trait;
  if (image->alpha_trait != UndefinedPixelTrait)
    (void) SetImageBackgroundColor(image,exception);
  (void) CopyMagickString(image->filename,image_info->filename,MagickPathExtent);
  if (LocaleCompare(tile_image->magick,"PATTERN") == 0)
    {
      tile_image->tile_offset.x=0;
      tile_image->tile_offset.y=0;
    }
  (void) TextureImage(image,tile_image,exception);
  tile_image=DestroyImage(tile_image);
  if (image->colorspace == GRAYColorspace)
    image->type=GrayscaleType;
  return(GetFirstImageInList(image));
}

/*
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%   R e a d T I L E I m a g e                                                 %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadTILEImage tiles a texture on an image.  It allocates the
%  memory necessary for the new Image structure and returns a pointer to the
%  new image.
%
%  The format of the ReadTILEImage method is:
%
%      Image *ReadTILEImage(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.
%
*/
static Image *ReadTILEImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image,
    *tile_image;

  ImageInfo
    *read_info;

  /*
    Initialize Image structure.
  */
  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);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  tile_image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (tile_image == (Image *) NULL)
    return((Image *) NULL);
  image=AllocateImage(image_info);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  if (*image_info->filename == '\0')
    ThrowReaderException(OptionError,"MustSpecifyAnImageName");
  (void) SetImageBackgroundColor(image);
  image->matte=tile_image->matte;
  (void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
  if (LocaleCompare(tile_image->magick,"PATTERN") == 0)
    {
      tile_image->tile_offset.x=0;
      tile_image->tile_offset.y=0;
    }
  (void) TextureImage(image,tile_image);
  tile_image=DestroyImage(tile_image);
  return(GetFirstImageInList(image));
}

/*
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%   R e a d C L I P I m a g e                                                 %
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%
%  ReadCLIPImage returns the rendered clip path associated with the image.
%
%  The format of the ReadCLIPImage method is:
%
%      Image *ReadCLIPImage(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.
%
*/
static Image *ReadCLIPImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  ImageInfo
    *read_info;

  /*
    Initialize Image structure.
  */
  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);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) CopyMagickString(read_info->magick,"MIFF",MaxTextExtent);
  image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (image != (Image *) NULL)
    {
      Image
        *clip_image;

      (void) ClipImage(image);
      if (image->clip_mask == (Image *) NULL)
        ThrowReaderException(CoderError,"ImageDoesNotHaveAClipMask");
      clip_image=CloneImage(image->clip_mask,0,0,MagickTrue,exception);
      image=DestroyImage(image);
      image=clip_image;
    }
  return(GetFirstImageInList(image));
}

static Image *ReadPlasmaImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  ImageInfo
    *read_info;

  ssize_t
    y;

  MagickBooleanType
    status;

  register ssize_t
    x;

  register PixelPacket
    *q;

  register size_t
    i;

  SegmentInfo
    segment_info;

  size_t
    depth,
    max_depth;

  /*
    Recursively apply plasma to the image.
  */
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) FormatMagickString(read_info->filename,MaxTextExtent,
    "gradient:%s",image_info->filename);
  image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (image == (Image *) NULL)
    return((Image *) NULL);
  image->storage_class=DirectClass;
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      q->opacity=(Quantum) (QuantumRange/2);
      q++;
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
  }
  segment_info.x1=0;
  segment_info.y1=0;
  segment_info.x2=(double) image->columns-1;
  segment_info.y2=(double) image->rows-1;
  if (LocaleCompare(image_info->filename,"fractal") == 0)
    {
      RandomInfo
        *random_info;

      /*
        Seed pixels before recursion.
      */
      random_info=AcquireRandomInfo();
      PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1);
      PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
        segment_info.y2)/2);
      PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        segment_info.y1);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        (segment_info.y1+segment_info.y2)/2);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        segment_info.y2);
      PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1);
      PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
        segment_info.y2)/2);
      PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2);
      random_info=DestroyRandomInfo(random_info);
    }
  i=(size_t) MagickMax(image->columns,image->rows)/2;
  for (max_depth=0; i != 0; max_depth++)
    i>>=1;
  for (depth=1; ; depth++)
  {
    if (PlasmaImage(image,&segment_info,0,depth) != MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) depth,
      max_depth);
    if (status == MagickFalse)
      break;
  }
  (void) SetImageAlphaChannel(image,DeactivateAlphaChannel);
  return(GetFirstImageInList(image));
}

/*
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%   R e a d V I D I m a g e                                                   %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadVIDImage reads one of more images and creates a Visual Image
%  Directory file.  It allocates the memory necessary for the new Image
%  structure and returns a pointer to the new image.
%
%  The format of the ReadVIDImage method is:
%
%      Image *ReadVIDImage(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.
%
*/
static Image *ReadVIDImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define ClientName  "montage"

  char
    **filelist,
    *label;

  Image
    *image,
    *images,
    *montage_image,
    *next_image,
    *thumbnail_image;

  ImageInfo
    *read_info;

  int
    number_files;

  MagickBooleanType
    status;

  MontageInfo
    *montage_info;

  RectangleInfo
    geometry;

  register ssize_t
    i;

  /*
    Expand the filename.
  */
  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);
  filelist=(char **) AcquireAlignedMemory(1,sizeof(*filelist));
  if (filelist == (char **) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  filelist[0]=ConstantString(image_info->filename);
  number_files=1;
  status=ExpandFilenames(&number_files,&filelist);
  if ((status == MagickFalse) || (number_files == 0))
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  image=DestroyImage(image);
  /*
    Read each image and convert them to a tile.
  */
  images=NewImageList();
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
    (void *) NULL);
  if (read_info->size == (char *) NULL)
    (void) CloneString(&read_info->size,DefaultTileGeometry);
  for (i=0; i < (ssize_t) number_files; i++)
  {
    if (image_info->debug != MagickFalse)
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),"name: %s",
        filelist[i]);
    (void) CopyMagickString(read_info->filename,filelist[i],MaxTextExtent);
    filelist[i]=DestroyString(filelist[i]);
    *read_info->magick='\0';
    next_image=ReadImage(read_info,exception);
    CatchException(exception);
    if (next_image == (Image *) NULL)
//.........这里部分代码省略.........

static Image *ReadSTEGANOImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
#define GetBit(alpha,i) MagickMin((((unsigned long) (alpha) >> (unsigned long) \
  (i)) & 0x01),16)
#define SetBit(alpha,i,set) (alpha)=(IndexPacket) ((set) != 0 ? \
  (unsigned long) (alpha) | (1UL << (unsigned long) (i)) : (unsigned long) \
  (alpha) & ~(1UL << (unsigned long) (i)))

  Image
    *image,
    *watermark;

  ImageInfo
    *read_info;

  long
    c,
    i,
    j,
    k,
    y;

  MagickBooleanType
    status;

  PixelPacket
    pixel;

  register IndexPacket
    *indexes;

  register long
    x;

  register PixelPacket
    *q;

  unsigned long
    depth;

  /*
    Initialize Image structure.
  */
  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);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  watermark=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (watermark == (Image *) NULL)
    return((Image *) NULL);
  watermark->depth=MAGICKCORE_QUANTUM_DEPTH;
  if (AcquireImageColormap(image,MaxColormapSize) == MagickFalse)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  /*
    Get hidden watermark from low-order bits of image.
  */
  c=0;
  i=0;
  j=0;
  i=MAGICKCORE_QUANTUM_DEPTH-1;
  depth=MAGICKCORE_QUANTUM_DEPTH;
  for (k=image->offset; (i >= 0) && (j < (long) depth); i--)
  {
    for (y=0; (y < (long) image->rows) && (j < (long) depth); y++)
    {
      x=0;
      for (; (x < (long) image->columns) && (j < (long) depth); x++)
      {
        if ((k/(long) watermark->columns) >= (long) watermark->rows)
          break;
        (void) GetOneVirtualPixel(watermark,k % (long) watermark->columns,
          k/(long) watermark->columns,&pixel,exception);
        q=GetAuthenticPixels(image,x,y,1,1,exception);
        if (q == (PixelPacket *) NULL)
          break;
        indexes=GetAuthenticIndexQueue(image);
        switch (c)
        {
          case 0:
          {
            SetBit(*indexes,i,GetBit(pixel.red,j));
            break;
          }
          case 1:
//.........这里部分代码省略.........

/*
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%   R e a d P W P I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadPWPImage() reads a Seattle Film Works multi-image file and returns
%  it.  It allocates the memory necessary for the new Image structure and
%  returns a pointer to the new image.
%
%  The format of the ReadPWPImage method is:
%
%      Image *ReadPWPImage(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.
%
*/
static Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  FILE
    *file;

  Image
    *image,
    *next_image,
    *pwp_image;

  ImageInfo
    *read_info;

  int
    c,
    unique_file;

  MagickBooleanType
    status;

  register Image
    *p;

  register ssize_t
    i;

  size_t
    filesize,
    length;

  ssize_t
    count;

  unsigned char
    magick[MaxTextExtent];

  /*
    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);
  pwp_image=AcquireImage(image_info);
  image=pwp_image;
  status=OpenBlob(image_info,pwp_image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    return((Image *) NULL);
  count=ReadBlob(pwp_image,5,magick);
  if ((count == 0) || (LocaleNCompare((char *) magick,"SFW95",5) != 0))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  read_info=CloneImageInfo(image_info);
  (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
    (void *) NULL);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  unique_file=AcquireUniqueFileResource(read_info->filename);
  for ( ; ; )
  {
    for (c=ReadBlobByte(pwp_image); c != EOF; c=ReadBlobByte(pwp_image))
    {
      for (i=0; i < 17; i++)
        magick[i]=magick[i+1];
      magick[17]=(unsigned char) c;
      if (LocaleNCompare((char *) (magick+12),"SFW94A",6) == 0)
        break;
    }
    if (c == EOF)
      break;
    if (LocaleNCompare((char *) (magick+12),"SFW94A",6) != 0)
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    /*
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      {
        /*
          Normal stitch.
        */
        if ((y & 0x40) != 0)
          y-=0x80;
      }
    else
      {
        /*
          Jump stitch.
        */
        y=((y & 0x0f) << 8)+ReadBlobByte(image);
        if ((y & 0x800) != 0)
          y-=0x1000;
      }
    /*
      Note stitch (x,y).
    */
    x+=delta_x;
    y+=delta_y;
    delta_x=x;
    delta_y=y;
    stitches[i].x=(double) x;
    stitches[i].y=(double) y;
    if ((double) x < bounds.x1)
      bounds.x1=(double) x;
    if ((double) x > bounds.x2)
      bounds.x2=(double) x;
    if ((double) y < bounds.y1)
      bounds.y1=(double) y;
    if ((double) y > bounds.y2)
      bounds.y2=(double) y;
    i++;
    if (i >= (ssize_t) number_stitches)
      {
        /*
          Make room for more stitches.
        */
        number_stitches<<=1;
        stitches=(PointInfo *)  ResizeQuantumMemory(stitches,(size_t)
          number_stitches,sizeof(*stitches));
        if (stitches == (PointInfo *) NULL)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
     }
  }
  j++;
  blocks[j].offset=(ssize_t) i;
  number_blocks=(size_t) j;
  /*
    Write stitches as SVG file.
  */
  file=(FILE *) NULL;
  unique_file=AcquireUniqueFileResource(filename);
  if (unique_file != -1)
    file=fdopen(unique_file,"wb");
  if ((unique_file == -1) || (file == (FILE *) NULL))
    ThrowImageException(FileOpenError,"UnableToCreateTemporaryFile");
  (void) FormatLocaleFile(file,"<?xml version=\"1.0\"?>\n");
  (void) FormatLocaleFile(file,"<svg xmlns=\"http://www.w3.org/2000/svg\" "
    "xlink=\"http://www.w3.org/1999/xlink\" "
    "ev=\"http://www.w3.org/2001/xml-events\" version=\"1.1\" "
    "baseProfile=\"full\" width=\"%g\" height=\"%g\">\n",bounds.x2-bounds.x1,
    bounds.y2-bounds.y1);
  for (i=0; i < (ssize_t) number_blocks; i++)
  {
    offset=blocks[i].offset;
    (void) FormatLocaleFile(file,"  <path stroke=\"#%02x%02x%02x\" "
      "fill=\"none\" d=\"M %g %g",blocks[i].color->red,blocks[i].color->green,
      blocks[i].color->blue,stitches[offset].x-bounds.x1,
      stitches[offset].y-bounds.y1);
    for (j=1; j < (ssize_t) (blocks[i+1].offset-offset); j++)
      (void) FormatLocaleFile(file," L %g %g",stitches[offset+j].x-bounds.x1,
        stitches[offset+j].y-bounds.y1);
    (void) FormatLocaleFile(file,"\"/>\n");
  }
  (void) FormatLocaleFile(file,"</svg>\n");
  (void) fclose(file);
  (void) CloseBlob(image);
  image=DestroyImage(image);
  /*
    Read SVG file.
  */
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) FormatLocaleString(read_info->filename,MaxTextExtent,"svg:%s",
    filename);
  image=ReadImage(read_info,exception);
  if (image != (Image *) NULL)
    {
      (void) CopyMagickString(image->filename,image_info->filename,
        MaxTextExtent);
      (void) CopyMagickString(image->magick_filename,image_info->filename,
        MaxTextExtent);
      (void) CopyMagickString(image->magick,"PES",MaxTextExtent);
    }
  read_info=DestroyImageInfo(read_info);
  (void) RelinquishUniqueFileResource(filename);
  return(GetFirstImageInList(image));
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d D N G I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadDNGImage() reads an binary file in the Digital Negative format and
%  returns it.  It allocates the memory necessary for the new Image structure
%  and returns a pointer to the new image.
%
%  The format of the ReadDNGImage method is:
%
%      Image *ReadDNGImage(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.
%
*/
static Image *ReadDNGImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  ExceptionInfo
    *sans_exception;

  Image
    *image;

  ImageInfo
    *read_info;

  MagickBooleanType
    status;

  /*
    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);
    }
  (void) CloseBlob(image);
  (void) DestroyImageList(image);
  /*
    Convert DNG to PPM with delegate.
  */
  image=AcquireImage(image_info);
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) InvokeDelegate(read_info,image,"dng:decode",(char *) NULL,exception);
  image=DestroyImage(image);
  (void) FormatLocaleString(read_info->filename,MaxTextExtent,"%s.png",
    read_info->unique);
  sans_exception=AcquireExceptionInfo();
  image=ReadImage(read_info,sans_exception);
  sans_exception=DestroyExceptionInfo(sans_exception);
  if (image == (Image *) NULL)
    {
      (void) FormatLocaleString(read_info->filename,MaxTextExtent,"%s.ppm",
        read_info->unique);
      image=ReadImage(read_info,exception);
    }
  (void) RelinquishUniqueFileResource(read_info->filename);
  if (image != (Image *) NULL)
    {
      char
        filename[MaxTextExtent],
        *xml;

      ExceptionInfo
        *sans;

      (void) CopyMagickString(image->magick,read_info->magick,MaxTextExtent);
      (void) FormatLocaleString(filename,MaxTextExtent,"%s.ufraw",
        read_info->unique);
      sans=AcquireExceptionInfo();
      xml=FileToString(filename,MaxTextExtent,sans);
      (void) RelinquishUniqueFileResource(filename);
      if (xml != (char *) NULL)
        {
          XMLTreeInfo
            *ufraw;

//.........这里部分代码省略.........

static Image *ReadSTEGANOImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
#define GetBit(alpha,i) MagickMin((((size_t) (alpha) >> (size_t) \
  (i)) & 0x01),16)
#define SetBit(i,set) SetPixelIndex(image,((set) != 0 ? \
  (size_t) GetPixelIndex(image,q) | (one << (size_t) (i)) : \
  (size_t) GetPixelIndex(image,q) & ~(one << (size_t) (i))),q)

  Image
    *image,
    *watermark;

  ImageInfo
    *read_info;

  int
    c;

  MagickBooleanType
    status;

  PixelInfo
    pixel;

  register Quantum
    *q;

  register ssize_t
    x;

  size_t
    depth,
    one;

  ssize_t
    i,
    j,
    k,
    y;

  /*
    Initialize Image structure.
  */
  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);
  one=1;
  image=AcquireImage(image_info,exception);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  watermark=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (watermark == (Image *) NULL)
    return((Image *) NULL);
  watermark->depth=MAGICKCORE_QUANTUM_DEPTH;
  if (AcquireImageColormap(image,MaxColormapSize,exception) == MagickFalse)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  /*
    Get hidden watermark from low-order bits of image.
  */
  c=0;
  i=0;
  j=0;
  i=(ssize_t) (watermark->depth-1);
  depth=watermark->depth;
  for (k=image->offset; (i >= 0) && (j < (ssize_t) depth); i--)
  {
    for (y=0; (y < (ssize_t) image->rows) && (j < (ssize_t) depth); y++)
    {
      x=0;
      for ( ; (x < (ssize_t) image->columns) && (j < (ssize_t) depth); x++)
      {
        if ((k/(ssize_t) watermark->columns) >= (ssize_t) watermark->rows)
          break;
        (void) GetOneVirtualPixelInfo(watermark,UndefinedVirtualPixelMethod,
          k % (ssize_t) watermark->columns,k/(ssize_t) watermark->columns,
          &pixel,exception);
        q=GetAuthenticPixels(image,x,y,1,1,exception);
        if (q == (Quantum *) NULL)
          break;
        switch (c)
        {
          case 0:
          {
            SetBit(i,GetBit(pixel.red,j));
            break;
          }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      buffer=(unsigned char *) RelinquishMagickMemory(buffer);
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    }
  TranslateSFWMarker(header);  /* translate soi and app tags */
  TranslateSFWMarker(header+2);
  (void) CopyMagickMemory(header+6,"JFIF\0\001\0",7);  /* JFIF magic */
  /*
    Translate remaining markers.
  */
  offset=header+2;
  offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2;
  for ( ; ; )
  {
    if ((offset+4) > (buffer+count-1))
      {
        buffer=(unsigned char *) RelinquishMagickMemory(buffer);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
    TranslateSFWMarker(offset);
    if (offset[1] == 0xda)
      break;
    offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2;
  }
  offset--;
  data=SFWScan(offset,buffer+count-1,(const unsigned char *) "\377\311",2);
  if (data == (unsigned char *) NULL)
    {
      buffer=(unsigned char *) RelinquishMagickMemory(buffer);
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    }
  TranslateSFWMarker(data++);  /* translate eoi marker */
  /*
    Write JFIF file.
  */
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  file=(FILE *) NULL;
  unique_file=AcquireUniqueFileResource(read_info->filename);
  if (unique_file != -1)
    file=fopen_utf8(read_info->filename,"wb");
  if ((unique_file == -1) || (file == (FILE *) NULL))
    {
      buffer=(unsigned char *) RelinquishMagickMemory(buffer);
      read_info=DestroyImageInfo(read_info);
      (void) CopyMagickString(image->filename,read_info->filename,
        MagickPathExtent);
      ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile",
        image->filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  extent=fwrite(header,(size_t) (offset-header+1),1,file);
  (void) extent;
  extent=fwrite(HuffmanTable,1,sizeof(HuffmanTable)/sizeof(*HuffmanTable),file);
  extent=fwrite(offset+1,(size_t) (data-offset),1,file);
  status=ferror(file) == -1 ? MagickFalse : MagickTrue;
  (void) fclose(file);
  (void) close(unique_file);
  buffer=(unsigned char *) RelinquishMagickMemory(buffer);
  if (status == MagickFalse)
    {
      char
        *message;

      (void) remove_utf8(read_info->filename);
      read_info=DestroyImageInfo(read_info);
      message=GetExceptionMessage(errno);
      (void) ThrowMagickException(exception,GetMagickModule(),FileOpenError,
        "UnableToWriteFile","`%s': %s",image->filename,message);
      message=DestroyString(message);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Read JPEG image.
  */
  jpeg_image=ReadImage(read_info,exception);
  (void) RelinquishUniqueFileResource(read_info->filename);
  read_info=DestroyImageInfo(read_info);
  if (jpeg_image == (Image *) NULL)
    {
      image=DestroyImageList(image);
      return(jpeg_image);
    }
  (void) CopyMagickString(jpeg_image->filename,image->filename,MagickPathExtent);
  (void) CopyMagickString(jpeg_image->magick,image->magick,MagickPathExtent);
  image=DestroyImageList(image);
  image=jpeg_image;
  /*
    Correct image orientation.
  */
  flipped_image=FlipImage(image,exception);
  if (flipped_image != (Image *) NULL)
    {
      DuplicateBlob(flipped_image,image);
      image=DestroyImage(image);
      image=flipped_image;
    }
  return(GetFirstImageInList(image));
}

//.........这里部分代码省略.........
        geometry_info;

      MagickStatusType
        flags;

      flags=ParseGeometry(PSDensityGeometry,&geometry_info);
      image->x_resolution=geometry_info.rho;
      image->y_resolution=geometry_info.sigma;
      if ((flags & SigmaValue) == 0)
        image->y_resolution=image->x_resolution;
    }
  page.width=612;
  page.height=792;
  page.x=43;
  page.y=43;
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  /*
    Initialize Image structure.
  */
  image->columns=(size_t) floor((((double) page.width*image->x_resolution)/
    delta.x)+0.5);
  image->rows=(size_t) floor((((double) page.height*image->y_resolution)/
    delta.y)+0.5);
  image->page.x=0;
  image->page.y=0;
  texture=(Image *) NULL;
  if (image_info->texture != (char *) NULL)
    {
      ImageInfo
        *read_info;

      read_info=CloneImageInfo(image_info);
      SetImageInfoBlob(read_info,(void *) NULL,0);
      (void) CopyMagickString(read_info->filename,image_info->texture,
        MaxTextExtent);
      texture=ReadImage(read_info,exception);
      read_info=DestroyImageInfo(read_info);
    }
  /*
    Annotate the text image.
  */
  (void) SetImageBackgroundColor(image);
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  (void) CloneString(&draw_info->text,image_info->filename);
  (void) FormatLocaleString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x,
    (long) page.y);
  (void) CloneString(&draw_info->geometry,geometry);
  status=GetTypeMetrics(image,draw_info,&metrics);
  if (status == MagickFalse)
    ThrowReaderException(TypeError,"UnableToGetTypeMetrics");
  page.y=(ssize_t) ceil((double) page.y+metrics.ascent-0.5);
  (void) FormatLocaleString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x,
    (long) page.y);
  (void) CloneString(&draw_info->geometry,geometry);
  (void) CopyMagickString(filename,image_info->filename,MaxTextExtent);
  if (*draw_info->text != '\0')
    *draw_info->text='\0';
  p=text;
  for (offset=2*page.y; p != (char *) NULL; )
  {
    /*
      Annotate image with text.
    */
    (void) ConcatenateString(&draw_info->text,text);
    (void) ConcatenateString(&draw_info->text,"\n");