C++ DestroyImageList函数代码示例

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d I C O N I m a g e                                                 %
%                                                                             %
%                                                                             %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadICONImage() reads a Microsoft icon 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 ReadICONImage method is:
%
%      Image *ReadICONImage(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 *ReadICONImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  IconFile
    icon_file;

  IconInfo
    icon_info;

  Image
    *image;

  MagickBooleanType
    status;

  register ssize_t
    i,
    x;

  register Quantum
    *q;

  register unsigned char
    *p;

  size_t
    bit,
    byte,
    bytes_per_line,
    one,
    scanline_pad;

  ssize_t
    count,
    offset,
    y;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickCoreSignature);
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickCoreSignature);
  image=AcquireImage(image_info,exception);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  icon_file.reserved=(short) ReadBlobLSBShort(image);
  icon_file.resource_type=(short) ReadBlobLSBShort(image);
  icon_file.count=(short) ReadBlobLSBShort(image);
  if ((icon_file.reserved != 0) ||
      ((icon_file.resource_type != 1) && (icon_file.resource_type != 2)) ||
      (icon_file.count > MaxIcons))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  for (i=0; i < icon_file.count; i++)
  {
    icon_file.directory[i].width=(unsigned char) ReadBlobByte(image);
    icon_file.directory[i].height=(unsigned char) ReadBlobByte(image);
    icon_file.directory[i].colors=(unsigned char) ReadBlobByte(image);
    icon_file.directory[i].reserved=(unsigned char) ReadBlobByte(image);
    icon_file.directory[i].planes=(unsigned short) ReadBlobLSBShort(image);
    icon_file.directory[i].bits_per_pixel=(unsigned short)
      ReadBlobLSBShort(image);
    icon_file.directory[i].size=ReadBlobLSBLong(image);
    icon_file.directory[i].offset=ReadBlobLSBLong(image);
    if (EOFBlob(image) != MagickFalse)
      {
        ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
//.........这里部分代码省略.........

//.........这里部分代码省略.........
  vertical_factor=2;
  if (image_info->sampling_factor != (char *) NULL)
    {
      GeometryInfo
        geometry_info;

      MagickStatusType
        flags;

      flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
      horizontal_factor=(ssize_t) geometry_info.rho;
      vertical_factor=(ssize_t) geometry_info.sigma;
      if ((flags & SigmaValue) == 0)
        vertical_factor=horizontal_factor;
      if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
          (vertical_factor != 1) && (vertical_factor != 2))
        ThrowReaderException(CorruptImageError,"UnexpectedSamplingFactor");
    }
  if ((interlace == UndefinedInterlace) ||
      ((interlace == NoInterlace) && (vertical_factor == 2)))
    {
      interlace=NoInterlace;    /* CCIR 4:2:2 */
      if (vertical_factor == 2)
        interlace=PlaneInterlace; /* CCIR 4:1:1 */
    }
  if (interlace != PartitionInterlace)
    {
      /*
        Open image file.
      */
      status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
      if (status == MagickFalse)
        {
          image=DestroyImageList(image);
          return((Image *) NULL);
        }
      if (DiscardBlobBytes(image,image->offset) == MagickFalse)
        ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
          image->filename);
    }
  /*
    Allocate memory for a scanline.
  */
  if (interlace == NoInterlace)
    scanline=(unsigned char *) AcquireQuantumMemory((size_t) 2UL*
      image->columns+2UL,quantum*sizeof(*scanline));
  else
    scanline=(unsigned char *) AcquireQuantumMemory((size_t) image->columns,
      quantum*sizeof(*scanline));
  if (scanline == (unsigned char *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  do
  {
    chroma_image=CloneImage(image,image->columns/horizontal_factor,
      image->rows/vertical_factor,MagickTrue,exception);
    if (chroma_image == (Image *) NULL)
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    /*
      Convert raster image to pixel packets.
    */
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    if (interlace == PartitionInterlace)
      {
        AppendImageFormat("Y",image->filename);

MagickExport Image *ChannelFxImage(const Image *image,const char *expression,
  ExceptionInfo *exception)
{
#define ChannelFxImageTag  "ChannelFx/Image"

  ChannelFx
    channel_op;

  ChannelType
    channel_mask;

  char
    token[MaxTextExtent];

  const char
    *p;

  const Image
    *source_image;

  double
    pixel;

  Image
    *destination_image;

  MagickBooleanType
    status;

  PixelChannel
    source_channel,
    destination_channel;

  ssize_t
    channels;

  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);
  source_image=image;
  destination_image=CloneImage(source_image,0,0,MagickTrue,exception);
  if (destination_image == (Image *) NULL)
    return((Image *) NULL);
  if (expression == (const char *) NULL)
    return(destination_image);
  destination_channel=RedPixelChannel;
  channel_mask=UndefinedChannel;
  pixel=0.0;
  p=(char *) expression;
  GetMagickToken(p,&p,token);
  channel_op=ExtractChannelOp;
  for (channels=0; *token != '\0'; )
  {
    ssize_t
      i;

    /*
      Interpret channel expression.
    */
    switch (*token)
    {
      case ',':
      {
        GetMagickToken(p,&p,token);
        break;
      }
      case '|':
      {
        if (GetNextImageInList(source_image) != (Image *) NULL)
          source_image=GetNextImageInList(source_image);
        else
          source_image=GetFirstImageInList(source_image);
        GetMagickToken(p,&p,token);
        break;
      }
      case ';':
      {
        Image
          *canvas;

        SetPixelChannelMask(destination_image,channel_mask);
        if ((channel_op == ExtractChannelOp) && (channels == 1))
          (void) SetImageColorspace(destination_image,GRAYColorspace,exception);
        status=SetImageStorageClass(destination_image,DirectClass,exception);
        if (status == MagickFalse)
          {
            destination_image=DestroyImageList(destination_image);
            return(destination_image);
          }
        canvas=CloneImage(source_image,0,0,MagickTrue,exception);
        if (canvas == (Image *) NULL)
          {
            destination_image=DestroyImageList(destination_image);
            return(destination_image);
          }
        AppendImageToList(&destination_image,canvas);
        destination_image=GetLastImageInList(destination_image);
//.........这里部分代码省略.........

/*
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%   R e a d M G K I m a g e                                                   %
%                                                                             %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadMGKImage() reads a MGK 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 ReadMGKImage method is:
%
%      Image *ReadMGKImage(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 *ReadMGKImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    buffer[MaxTextExtent];

  Image
    *image;

  MagickBooleanType
    status;

  register ssize_t
    x;

  register PixelPacket
    *q;

  register unsigned char
    *p;

  ssize_t
    count,
    y;

  size_t
    columns,
    rows;

  unsigned char
    *pixels;

  /*
    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);
    }
  /*
    Read MGK image.
  */
  (void) ReadBlobString(image,buffer);  /* read magic number */
  if (IsMGK(buffer,7) == MagickFalse)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  (void) ReadBlobString(image,buffer);
  count=(ssize_t) sscanf(buffer,"%lu %lu\n",&columns,&rows);
  if (count <= 0)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  do
  {
    /*
      Initialize image structure.
    */
    image->columns=columns;
    image->rows=rows;
    image->depth=8;
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    /*
      Convert MGK raster image to pixel packets.
    */
//.........这里部分代码省略.........

static Image *ReadXPMImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    *grey,
    key[MagickPathExtent],
    target[MagickPathExtent],
    *xpm_buffer;

  Image
    *image;

  MagickBooleanType
    active,
    status;

  register char
    *next,
    *p,
    *q;

  register ssize_t
    x;

  register Quantum
    *r;

  size_t
    length;

  SplayTreeInfo
    *xpm_colors;

  ssize_t
    count,
    j,
    y;

  unsigned long
    colors,
    columns,
    rows,
    width;

  /*
    Open image file.
  */
  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);
  image=AcquireImage(image_info,exception);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Read XPM file.
  */
  length=MagickPathExtent;
  xpm_buffer=(char *) AcquireQuantumMemory((size_t) length,sizeof(*xpm_buffer));
  if (xpm_buffer == (char *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  *xpm_buffer='\0';
  p=xpm_buffer;
  while (ReadBlobString(image,p) != (char *) NULL)
  {
    if ((*p == '#') && ((p == xpm_buffer) || (*(p-1) == '\n')))
      continue;
    if ((*p == '}') && (*(p+1) == ';'))
      break;
    p+=strlen(p);
    if ((size_t) (p-xpm_buffer+MagickPathExtent) < length)
      continue;
    length<<=1;
    xpm_buffer=(char *) ResizeQuantumMemory(xpm_buffer,length+MagickPathExtent,
      sizeof(*xpm_buffer));
    if (xpm_buffer == (char *) NULL)
      break;
    p=xpm_buffer+strlen(xpm_buffer);
  }
  if (xpm_buffer == (char *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  /*
    Remove comments.
  */
  count=0;
  width=0;
  for (p=xpm_buffer; *p != '\0'; p++)
  {
    if (*p != '"')
      continue;
    count=(ssize_t) sscanf(p+1,"%lu %lu %lu %lu",&columns,&rows,&colors,&width);
    image->columns=columns;
    image->rows=rows;
    image->colors=colors;
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
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%   R e a d T T F I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadTTFImage() reads a TrueType font 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 ReadTTFImage method is:
%
%      Image *ReadTTFImage(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 *ReadTTFImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    buffer[MaxTextExtent],
    *text;

  const char
    *Text = (char *)
      "abcdefghijklmnopqrstuvwxyz\n"
      "ABCDEFGHIJKLMNOPQRSTUVWXYZ\n"
      "0123456789.:,;(*!?}^)#${%^&[email protected]\n";

  const TypeInfo
    *type_info;

  DrawInfo
    *draw_info;

  Image
    *image;

  long
    y;

  MagickBooleanType
    status;

  PixelPacket
    background_color;

  register long
    i,
    x;

  register PixelPacket
    *q;

  /*
    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);
  image->columns=800;
  image->rows=480;
  type_info=GetTypeInfo(image_info->filename,exception);
  if ((type_info != (const TypeInfo *) NULL) &&
      (type_info->glyphs != (char *) NULL))
    (void) CopyMagickString(image->filename,type_info->glyphs,MaxTextExtent);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Color canvas with background color
  */
  background_color=image_info->background_color;
  for (y=0; y < (long) image->rows; y++)
  {
    q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    for (x=0; x < (long) image->columns; x++)
      *q++=background_color;
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
  }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    *p;

  size_t
    bytes_per_pixel,
    lsb_first,
    max_packets,
    quantum;

  ssize_t
    count,
    y;

  unsigned char
    buffer[7],
    *viff_pixels;

  ViffInfo
    viff_info;

  /*
    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);
    }
  /*
    Read VIFF header (1024 bytes).
  */
  count=ReadBlob(image,1,&viff_info.identifier);
  do
  {
    /*
      Verify VIFF identifier.
    */
    if ((count == 0) || ((unsigned char) viff_info.identifier != 0xab))
      ThrowReaderException(CorruptImageError,"NotAVIFFImage");
    /*
      Initialize VIFF image.
    */
    count=ReadBlob(image,7,buffer);
    viff_info.file_type=buffer[0];
    viff_info.release=buffer[1];
    viff_info.version=buffer[2];
    viff_info.machine_dependency=buffer[3];
    count=ReadBlob(image,512,(unsigned char *) viff_info.comment);
    viff_info.comment[511]='\0';
    if (strlen(viff_info.comment) > 4)
      (void) SetImageProperty(image,"comment",viff_info.comment,exception);
    if ((viff_info.machine_dependency == VFF_DEP_DECORDER) ||
        (viff_info.machine_dependency == VFF_DEP_NSORDER))
      {
        viff_info.rows=ReadBlobLSBLong(image);
        viff_info.columns=ReadBlobLSBLong(image);
        viff_info.subrows=ReadBlobLSBLong(image);
        viff_info.x_offset=(int) ReadBlobLSBLong(image);

//.........这里部分代码省略.........
%  The format of the ReadGRADIENTImage method is:
%
%      Image *ReadGRADIENTImage(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 *ReadGRADIENTImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    colorname[MagickPathExtent+4];

  Image
    *image;

  ImageInfo
    *read_info;

  MagickBooleanType
    icc_color,
    status;

  StopInfo
    *stops;

  /*
    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);
  (void) CopyMagickString(colorname,image_info->filename,MagickPathExtent);
  (void) sscanf(image_info->filename,"%[^-]",colorname);
  (void) FormatLocaleString(read_info->filename,MagickPathExtent,"xc:%s",
    colorname);
  image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (image == (Image *) NULL)
    return((Image *) NULL);
  (void) SetImageAlpha(image,(Quantum) TransparentAlpha,exception);
  (void) CopyMagickString(image->filename,image_info->filename,MagickPathExtent);
  icc_color=MagickFalse;
  if (LocaleCompare(colorname,"icc") == 0)
    {
      (void) ConcatenateMagickString(colorname,"-",MagickPathExtent);
      (void) sscanf(image_info->filename,"%*[^-]-%[^-]",colorname+4);
      icc_color=MagickTrue;
    }
  stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
  if (stops == (StopInfo *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  stops[0].offset=0.0;
  stops[1].offset=1.0;
  status=QueryColorCompliance(colorname,AllCompliance,&stops[0].color,exception);
  if (status == MagickFalse)
    {
      stops=(StopInfo *) RelinquishMagickMemory(stops);
      image=DestroyImage(image);
      return((Image *) NULL);
    }
  (void) SetImageColorspace(image,stops[0].color.colorspace,exception);
  (void) CopyMagickString(colorname,"white",MagickPathExtent);
  if (GetPixelInfoIntensity(image,&stops[0].color) > (QuantumRange/2.0))
    (void) CopyMagickString(colorname,"black",MagickPathExtent);
  if (icc_color == MagickFalse)
    (void) sscanf(image_info->filename,"%*[^-]-%[^-]",colorname);
  else
    (void) sscanf(image_info->filename,"%*[^-]-%*[^-]-%[^-]",colorname);
  status=QueryColorCompliance(colorname,AllCompliance,&stops[1].color,exception);
  if (status == MagickFalse)
    {
      stops=(StopInfo *) RelinquishMagickMemory(stops);
      image=DestroyImage(image);
      return((Image *) NULL);
    }
  image->alpha_trait=stops[0].color.alpha_trait;
  if (stops[1].color.alpha_trait != UndefinedPixelTrait)
    image->alpha_trait=stops[1].color.alpha_trait;
  status=GradientImage(image,LocaleCompare(image_info->magick,"GRADIENT") == 0 ?
    LinearGradient : RadialGradient,PadSpread,stops,2,exception);
  stops=(StopInfo *) RelinquishMagickMemory(stops);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  return(GetFirstImageInList(image));
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d C A L S I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadCALSImage() reads an CALS Raster Group 1 image format 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 ReadCALSImage method is:
%
%      Image *ReadCALSImage(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 *ReadCALSImage(const ImageInfo *image_info,
                            ExceptionInfo *exception)
{
    char
    filename[MaxTextExtent],
             header[129],
             message[MaxTextExtent];

    FILE
    *file;

    Image
    *image;

    ImageInfo
    *read_info;

    int
    c,
    unique_file;

    MagickBooleanType
    status;

    register ssize_t
    i;

    unsigned long
    density,
    direction,
    height,
    orientation,
    pel_path,
    type,
    width;

    /*
      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);
    }
    /*
      Read CALS header.
    */
    (void) ResetMagickMemory(header,0,sizeof(header));
    density=0;
    direction=0;
    orientation=1;
    pel_path=0;
    type=1;
    width=0;
    height=0;
    for (i=0; i < 16; i++)
    {
        if (ReadBlob(image,128,(unsigned char *) header) != 128)
            break;
        switch (*header)
        {
        case 'R':
        case 'r':
        {
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d A R T I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadARTImage() reads an image of raw bits in LSB order 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 ReadARTImage method is:
%
%      Image *ReadARTImage(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 *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  Image
    *image;

  QuantumInfo
    *quantum_info;

  QuantumType
    quantum_type;

  MagickBooleanType
    status;

  size_t
    length;

  ssize_t
    count,
    y;

  unsigned char
    *pixels;

  /*
    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);
    }
  image->depth=1;
  image->endian=MSBEndian;
  (void) ReadBlobLSBShort(image);
  image->columns=(size_t) ReadBlobLSBShort(image);
  (void) ReadBlobLSBShort(image);
  image->rows=(size_t) ReadBlobLSBShort(image);
  /*
    Initialize image colormap.
  */
  if (AcquireImageColormap(image,2) == MagickFalse)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  /*
    Convert bi-level image to pixel packets.
  */
  quantum_type=IndexQuantum;
  quantum_info=AcquireQuantumInfo(image_info,image);
  if (quantum_info == (QuantumInfo *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  pixels=GetQuantumPixels(quantum_info);
  length=GetQuantumExtent(image,quantum_info,quantum_type);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register PixelPacket
      *restrict q;

    q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d E P T I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadEPTImage() reads a binary Postscript 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 ReadEPTImage method is:
%
%      Image *ReadEPTImage(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 *ReadEPTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  EPTInfo
    ept_info;

  Image
    *image;

  ImageInfo
    *read_info;

  ssize_t
    count;

  MagickBooleanType
    status;

  MagickOffsetType
    offset;

  /*
    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);
    }
  ept_info.magick=ReadBlobLSBLong(image);
  if (ept_info.magick != 0xc6d3d0c5ul)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  ept_info.postscript_offset=(MagickOffsetType) ReadBlobLSBLong(image);
  ept_info.postscript_length=ReadBlobLSBLong(image);
  (void) ReadBlobLSBLong(image);
  (void) ReadBlobLSBLong(image);
  ept_info.tiff_offset=(MagickOffsetType) ReadBlobLSBLong(image);
  ept_info.tiff_length=ReadBlobLSBLong(image);
  (void) ReadBlobLSBShort(image);
  ept_info.postscript=(unsigned char *) AcquireQuantumMemory(
    ept_info.postscript_length,sizeof(*ept_info.postscript));
  if (ept_info.postscript == (unsigned char *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  ept_info.tiff=(unsigned char *) AcquireQuantumMemory(ept_info.tiff_length,
    sizeof(*ept_info.tiff));
  if ((ept_info.tiff_length != 0) && (ept_info.tiff == (unsigned char *) NULL))
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  offset=SeekBlob(image,ept_info.tiff_offset,SEEK_SET);
  if (offset < 0)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  count=ReadBlob(image,ept_info.tiff_length,ept_info.tiff);
  if (count != (ssize_t) (ept_info.tiff_length))
    ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
  offset=SeekBlob(image,ept_info.postscript_offset,SEEK_SET);
  if (offset < 0)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  count=ReadBlob(image,ept_info.postscript_length,ept_info.postscript);
  if (count != (ssize_t) (ept_info.postscript_length))
    ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
  (void) CloseBlob(image);
  image=DestroyImage(image);
  read_info=CloneImageInfo(image_info);
  (void) CopyMagickString(read_info->magick,"EPS",MaxTextExtent);
  image=BlobToImage(read_info,ept_info.postscript,ept_info.postscript_length,
    exception);
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d P I X I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadPIXImage() reads a Alias/Wavefront RLE 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 ReadPIXImage method is:
%
%      Image *ReadPIXImage(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 *ReadPIXImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  Image
    *image;

  IndexPacket
    index;

  MagickBooleanType
    status;

  Quantum
    blue,
    green,
    red;

  register IndexPacket
    *indexes;

  register ssize_t
    x;

  register PixelPacket
    *q;

  size_t
    bits_per_pixel,
    height,
    length,
    width;

  ssize_t
    y;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Read PIX image.
  */
  width=ReadBlobMSBShort(image);
  height=ReadBlobMSBShort(image);
  (void) ReadBlobMSBShort(image);  /* x-offset */
  (void) ReadBlobMSBShort(image);  /* y-offset */
  bits_per_pixel=ReadBlobMSBShort(image);
  if ((width == 0UL) || (height == 0UL) || ((bits_per_pixel != 8) &&
      (bits_per_pixel != 24)))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  do
  {
    /*
      Initialize image structure.
    */
    image->columns=width;
    image->rows=height;
    if (bits_per_pixel == 8)
      if (AcquireImageColormap(image,256) == MagickFalse)
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    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);
  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));
    }
  status=SetImageExtent(image,image->columns,image->rows);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      return(DestroyImageList(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) GetOneVirtualPixel(watermark,k % (ssize_t) watermark->columns,
          k/(ssize_t) 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:
          {
            SetBit(indexes,i,GetBit(pixel.green,j));
            break;
          }
          case 2:
          {
            SetBit(indexes,i,GetBit(pixel.blue,j));
            break;
          }
        }
        if (SyncAuthenticPixels(image,exception) == MagickFalse)
          break;
        c++;
        if (c == 3)
          c=0;
        k++;
        if (k == (ssize_t) (watermark->columns*watermark->columns))
          k=0;
        if (k == image->offset)
          j++;
      }
    }
    status=SetImageProgress(image,LoadImagesTag,(MagickOffsetType) i,depth);
    if (status == MagickFalse)
      break;
  }
  watermark=DestroyImage(watermark);
  (void) SyncImage(image);
  return(GetFirstImageInList(image));
}

static Image *ReadWMFImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    filename[MaxTextExtent];

  int
    unique_file;

  FILE
    *file;

  Image
    *image;

  ImageInfo
    *read_info;

  MagickBooleanType
    status;

  unsigned long
    flags;

  wmfAPI
    *wmf_info;

  wmfAPI_Options
    options;

  wmfD_Rect
    bounding_box;

  wmf_eps_t
    *eps_info;

  wmf_error_t
    wmf_status;

  /*
    Read WMF image.
  */
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  wmf_info=(wmfAPI *) NULL;
  flags=0;
  flags|=WMF_OPT_IGNORE_NONFATAL;
  flags|=WMF_OPT_FUNCTION;
  options.function=wmf_eps_function;
  wmf_status=wmf_api_create(&wmf_info,flags,&options);
  if (wmf_status != wmf_E_None)
    {
      if (wmf_info != (wmfAPI *) NULL)
        wmf_api_destroy(wmf_info);
      ThrowReaderException(DelegateError,"UnableToInitializeWMFLibrary");
    }
  wmf_status=wmf_bbuf_input(wmf_info,WMFReadBlob,WMFSeekBlob,WMFTellBlob,
    (void *) image);
  if (wmf_status != wmf_E_None)
    {
      wmf_api_destroy(wmf_info);
      ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
        image->filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  wmf_status=wmf_scan(wmf_info,0,&bounding_box);
  if (wmf_status != wmf_E_None)
    {
      wmf_api_destroy(wmf_info);
      ThrowReaderException(DelegateError,"FailedToScanFile");
    }
  eps_info=WMF_EPS_GetData(wmf_info);
  file=(FILE *) NULL;
  unique_file=AcquireUniqueFileResource(filename);
  if (unique_file != -1)
    file=fdopen(unique_file,"wb");
  if ((unique_file == -1) || (file == (FILE *) NULL))
    {
      wmf_api_destroy(wmf_info);
      ThrowReaderException(FileOpenError,"UnableToCreateTemporaryFile");
    }
  eps_info->out=wmf_stream_create(wmf_info,file);
  eps_info->bbox=bounding_box;
  wmf_status=wmf_play(wmf_info,0,&bounding_box);
  if (wmf_status != wmf_E_None)
    {
      wmf_api_destroy(wmf_info);
      ThrowReaderException(DelegateError,"FailedToRenderFile");
    }
  (void) fclose(file);
  wmf_api_destroy(wmf_info);
  (void) CloseBlob(image);
  image=DestroyImage(image);
  /*
    Read EPS image.
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      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 != 5) || (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)
      {
        (void) RelinquishUniqueFileResource(read_info->filename);
        ThrowReaderException(CorruptImageError,"ImproperImageHeader");
      }
    /*
      Dump SFW image to a temporary file.
    */
    file=(FILE *) NULL;
    if (unique_file != -1)
      file=fdopen(unique_file,"wb");
    if ((unique_file == -1) || (file == (FILE *) NULL))
      {
        (void) RelinquishUniqueFileResource(read_info->filename);
        ThrowFileException(exception,FileOpenError,"UnableToWriteFile",
          image->filename);
        image=DestroyImageList(image);
        return((Image *) NULL);
      }
    length=fwrite("SFW94A",1,6,file);
    (void) length;
    filesize=65535UL*magick[2]+256L*magick[1]+magick[0];
    for (i=0; i < (ssize_t) filesize; i++)
    {
      c=ReadBlobByte(pwp_image);
      (void) fputc(c,file);
    }
    (void) fclose(file);
    next_image=ReadImage(read_info,exception);
    if (next_image == (Image *) NULL)
      break;
    (void) FormatLocaleString(next_image->filename,MaxTextExtent,
      "slide_%02ld.sfw",(long) next_image->scene);
    if (image == (Image *) NULL)
      image=next_image;
    else
      {
        /*
          Link image into image list.
        */
        for (p=image; p->next != (Image *) NULL; p=GetNextImageInList(p)) ;
        next_image->previous=p;
        next_image->scene=p->scene+1;
        p->next=next_image;
      }
    if (image_info->number_scenes != 0)
      if (next_image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    status=SetImageProgress(image,LoadImagesTag,TellBlob(pwp_image),
      GetBlobSize(pwp_image));
    if (status == MagickFalse)
      break;
  }
  if (unique_file != -1)
    (void) close(unique_file);
  (void) RelinquishUniqueFileResource(read_info->filename);
  read_info=DestroyImageInfo(read_info);
  (void) CloseBlob(pwp_image);
  pwp_image=DestroyImage(pwp_image);
  if (EOFBlob(image) != MagickFalse)
    {
      char
        *message;

      message=GetExceptionMessage(errno);
      (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
        "UnexpectedEndOfFile","`%s': %s",image->filename,message);
      message=DestroyString(message);
    }
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}