C++ CloneImage函数代码示例

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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+   I n t e g r a l R o t a t e I m a g e                                     %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IntegralRotateImage()  rotates the image an integral of 90 degrees.  It
%  allocates the memory necessary for the new Image structure and returns a
%  pointer to the rotated image.
%
%  The format of the IntegralRotateImage method is:
%
%      Image *IntegralRotateImage(const Image *image,unsigned long rotations,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows.
%
%    o image: The image.
%
%    o rotations: Specifies the number of 90 degree rotations.
%
%
*/
static Image *IntegralRotateImage(const Image *image,unsigned long rotations,
  ExceptionInfo *exception)
{
#define RotateImageTag  "Rotate/Image"

  Image
    *rotate_image;

  long
    y;

  MagickBooleanType
    status;

  RectangleInfo
    page;

  register IndexPacket
    *indexes,
    *rotate_indexes;

  register const PixelPacket
    *p;

  register long
    x;

  register PixelPacket
    *q;

  /*
    Initialize rotated image attributes.
  */
  assert(image != (Image *) NULL);
  page=image->page;
  rotations%=4;
  if ((rotations == 1) || (rotations == 3))
    rotate_image=CloneImage(image,image->rows,image->columns,MagickTrue,
      exception);
  else
    rotate_image=CloneImage(image,image->columns,image->rows,MagickTrue,
      exception);
  if (rotate_image == (Image *) NULL)
    return((Image *) NULL);
  /*
    Integral rotate the image.
  */
  switch (rotations)
  {
    case 0:
    {
      /*
        Rotate 0 degrees.
      */
      for (y=0; y < (long) image->rows; y++)
      {
        p=AcquireImagePixels(image,0,y,image->columns,1,exception);
        q=SetImagePixels(rotate_image,0,y,rotate_image->columns,1);
        if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
          break;
        (void) CopyMagickMemory(q,p,(size_t) image->columns*sizeof(*q));
        indexes=GetIndexes(image);
        rotate_indexes=GetIndexes(rotate_image);
        if ((indexes != (IndexPacket *) NULL) &&
            (rotate_indexes != (IndexPacket *) NULL))
          (void) CopyMagickMemory(rotate_indexes,indexes,(size_t)
            image->columns*sizeof(*rotate_indexes));
        if (SyncImagePixels(rotate_image) == MagickFalse)
          break;
        if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
            (QuantumTick(y,image->rows) != MagickFalse))
          {
//.........这里部分代码省略.........

/*
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%   R e a d G R A Y I m a g e                                                 %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadGRAYImage() reads an image of raw grayscale samples 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 ReadGRAYImage method is:
%
%      Image *ReadGRAYImage(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 *ReadGRAYImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  const unsigned char
    *pixels;

  Image
    *canvas_image,
    *image;

  MagickBooleanType
    status;

  MagickOffsetType
    scene;

  QuantumInfo
    *quantum_info;

  QuantumType
    quantum_type;

  size_t
    length;

  ssize_t
    count,
    y;

  /*
    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);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if (DiscardBlobBytes(image,(size_t) image->offset) == MagickFalse)
    ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
      image->filename);
  /*
    Create virtual canvas to support cropping (i.e. image.gray[100x100+10+20]).
  */
  SetImageColorspace(image,GRAYColorspace,exception);
  canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse,
    exception);
  (void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod,
    exception);
  quantum_type=GrayQuantum;
  quantum_info=AcquireQuantumInfo(image_info,canvas_image);
  if (quantum_info == (QuantumInfo *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  pixels=(const unsigned char *) NULL;
  if (image_info->number_scenes != 0)
    while (image->scene < image_info->scene)
    {
      /*
        Skip to next image.
      */
      image->scene++;
      length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
      for (y=0; y < (ssize_t) image->rows; y++)
//.........这里部分代码省略.........

/*
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%   R e a d X T R N I m a g e                                                 %
%                                                                             %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadXTRNImage() reads a XTRN 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 ReadXTRNImage method is:
%
%      Image *ReadXTRNImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: Specifies a pointer to an ImageInfo structure.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadXTRNImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  ImageInfo
    *clone_info;

  void
    *param1,
    *param2,
    *param3;

  param1 = param2 = param3 = (void *) NULL;
  image = (Image *) NULL;
  clone_info=CloneImageInfo(image_info);
  if (clone_info->filename == NULL)
    {
      clone_info=DestroyImageInfo(clone_info);
      ThrowReaderException(FileOpenWarning,"No filename specified");
    }
  if (LocaleCompare(image_info->magick,"XTRNFILE") == 0)
    {
      image=ReadImage(clone_info,exception);
      CatchException(exception);
    }
  else if (LocaleCompare(image_info->magick,"XTRNIMAGE") == 0)
    {
      Image
        **image_ptr;

#ifdef ALL_IMAGEINFO
      ImageInfo
        **image_info_ptr;
#endif

      (void) sscanf(clone_info->filename,"%lx,%lx",&param1,&param2);
      image_ptr=(Image **) param2;
      if (*image_ptr != (Image *)NULL)
        image=CloneImage(*image_ptr,0,0,MagickFalse,&(*image_ptr)->exception);
#ifdef ALL_IMAGEINFO
      image_info_ptr=(ImageInfo **) param1;
      if (*image_info_ptr != (ImageInfo *)NULL)
        image_info=*image_info_ptr;
#endif
    }
  else if (LocaleCompare(image_info->magick,"XTRNBLOB") == 0)
    {
      char
        **blob_data;

      size_t
        *blob_length;

      char
        filename[MaxTextExtent];

      (void) sscanf(clone_info->filename,"%lx,%lx,%s",&param1,&param2,&filename);
      blob_data=(char **) param1;
      blob_length=(size_t *) param2;
      image=BlobToImage(clone_info,*blob_data,*blob_length,exception);
      CatchException(exception);
    }
  else if (LocaleCompare(image_info->magick,"XTRNARRAY") == 0)
    {
      char
        *blob_data,
        filename[MaxTextExtent];

      HRESULT
        hr;

//.........这里部分代码省略.........

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

    ChannelFx
    channel_op;

    ChannelType
    channel_mask;

    char
    token[MagickPathExtent];

    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 == MagickCoreSignature);
    if (image->debug != MagickFalse)
        (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
    assert(exception != (ExceptionInfo *) NULL);
    assert(exception->signature == MagickCoreSignature);
    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;

            (void) 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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%                                                                             %
%     S e p a r a t e I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SeparateImage() separates a channel from the image and returns it as a
%  grayscale image.
%
%  The format of the SeparateImage method is:
%
%      Image *SeparateImage(const Image *image,const ChannelType channel,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o channel: the image channel.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *SeparateImage(const Image *image,
                                  const ChannelType channel_type,ExceptionInfo *exception)
{
#define GetChannelBit(mask,bit)  (((size_t) (mask) >> (size_t) (bit)) & 0x01)
#define SeparateImageTag  "Separate/Image"

    CacheView
    *image_view,
    *separate_view;

    Image
    *separate_image;

    MagickBooleanType
    status;

    MagickOffsetType
    progress;

    ssize_t
    y;

    /*
      Initialize separate image attributes.
    */
    assert(image != (Image *) NULL);
    assert(image->signature == MagickCoreSignature);
    if (image->debug != MagickFalse)
        (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
    assert(exception != (ExceptionInfo *) NULL);
    assert(exception->signature == MagickCoreSignature);
    separate_image=CloneImage(image,image->columns,image->rows,MagickTrue,
                              exception);
    if (separate_image == (Image *) NULL)
        return((Image *) NULL);
    if (SetImageStorageClass(separate_image,DirectClass,exception) == MagickFalse)
    {
        separate_image=DestroyImage(separate_image);
        return((Image *) NULL);
    }
    (void) SetImageColorspace(separate_image,GRAYColorspace,exception);
    separate_image->alpha_trait=UndefinedPixelTrait;
    /*
      Separate image.
    */
    status=MagickTrue;
    progress=0;
    image_view=AcquireVirtualCacheView(image,exception);
    separate_view=AcquireAuthenticCacheView(separate_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
    #pragma omp parallel for schedule(static,4) shared(progress,status) \
    magick_threads(image,image,image->rows,1)
#endif
    for (y=0; y < (ssize_t) image->rows; y++)
    {
        register const Quantum
        *magick_restrict p;

        register Quantum
        *magick_restrict q;

        register ssize_t
        x;

        if (status == MagickFalse)
            continue;
        p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
        q=QueueCacheViewAuthenticPixels(separate_view,0,y,separate_image->columns,1,
                                        exception);
        if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
        {
            status=MagickFalse;
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%     A v e r a g e I m a g e s                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  The Average() method takes a set of images and averages them together.
%  Each image in the set must have the same width and height.  Average()
%  returns a single image with each corresponding pixel component of
%  each image averaged.   On failure, a NULL image is returned and
%  exception describes the reason for the failure.
%
%  The format of the AverageImage method is:
%
%      Image *AverageImages(Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: The image sequence.
%
%    o exception: Return any errors or warnings in this structure.
%
%
*/
MagickExport Image *AverageImages(const Image *image,ExceptionInfo *exception)
{
  ThreadViewDataSet
    *pixels_sums;

  Image
    *average_image;

  const Image
    *last_image;

  long
    y;

  unsigned long
    row_count=0;

  double
    number_scenes;
    
  unsigned long
    number_pixels;

  MagickPassFail
    status=MagickPass;

  /*
    Ensure the image are the same size.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  if (image->next == (Image *) NULL)
    ThrowImageException3(ImageError,ImageSequenceIsRequired,
                         UnableToAverageImage);
  {
    const Image
      *next;
      
    for (next=image; next != (Image *) NULL; next=next->next)
      {
        if ((next->columns != image->columns) || (next->rows != image->rows))
          ThrowImageException3(OptionError,UnableToAverageImageSequence,
                               ImageWidthsOrHeightsDiffer);
      }
  }
  /*
    Allocate sum accumulation buffer.
  */
  number_pixels=image->columns;
  pixels_sums=AllocateThreadViewDataArray(image,exception,number_pixels,
                                          sizeof(DoublePixelPacket));
  if (pixels_sums == (ThreadViewDataSet *) NULL)
    ThrowImageException3(ResourceLimitError,MemoryAllocationFailed,
                         UnableToAverageImageSequence);
  /*
    Initialize average next attributes.
  */
  average_image=CloneImage(image,image->columns,image->rows,True,exception);
  if (average_image == (Image *) NULL)
    {
      DestroyThreadViewDataSet(pixels_sums);
      return((Image *) NULL);
    }
  average_image->storage_class=DirectClass;

  number_scenes=(double) GetImageListLength(image);
  last_image=GetLastImageInList(image);
#if defined(HAVE_OPENMP)
#  pragma omp parallel for schedule(dynamic) shared(row_count, status)
#endif
//.........这里部分代码省略.........

static MagickBooleanType load_level(Image *image,XCFDocInfo *inDocInfo,
  XCFLayerInfo *inLayerInfo)
{
  ExceptionInfo
    *exception;

  int
    destLeft = 0,
    destTop = 0;

  Image*
    tile_image;

  MagickBooleanType
    status;

  MagickOffsetType
    saved_pos,
    offset,
    offset2;

  register ssize_t
    i;

  size_t
    width,
    height,
    ntiles,
    ntile_rows,
    ntile_cols,
    tile_image_width,
    tile_image_height;

  /* start reading the data */
  exception=inDocInfo->exception;
  width=ReadBlobMSBLong(image);
  height=ReadBlobMSBLong(image);

  /*
    Read in the first tile offset.  If it is '0', then this tile level is empty
    and we can simply return.
  */
  offset=(MagickOffsetType) ReadBlobMSBLong(image);
  if (offset == 0)
    return(MagickTrue);
  /*
    Initialize the reference for the in-memory tile-compression.
  */
  ntile_rows=(height+TILE_HEIGHT-1)/TILE_HEIGHT;
  ntile_cols=(width+TILE_WIDTH-1)/TILE_WIDTH;
  ntiles=ntile_rows*ntile_cols;
  for (i = 0; i < (ssize_t) ntiles; i++)
  {
    status=MagickFalse;
    if (offset == 0)
      ThrowBinaryException(CorruptImageError,"NotEnoughTiles",image->filename);
    /* save the current position as it is where the
     *  next tile offset is stored.
     */
    saved_pos=TellBlob(image);
    /* read in the offset of the next tile so we can calculate the amount
       of data needed for this tile*/
    offset2=(MagickOffsetType)ReadBlobMSBLong(image);
    /* if the offset is 0 then we need to read in the maximum possible
       allowing for negative compression */
    if (offset2 == 0)
      offset2=(MagickOffsetType) (offset + TILE_WIDTH * TILE_WIDTH * 4* 1.5);
    /* seek to the tile offset */
    offset=SeekBlob(image, offset, SEEK_SET);

      /* allocate the image for the tile
        NOTE: the last tile in a row or column may not be a full tile!
      */
      tile_image_width=(size_t) (destLeft == (int) ntile_cols-1 ?
        (int) width % TILE_WIDTH : TILE_WIDTH);
      if (tile_image_width == 0)
        tile_image_width=TILE_WIDTH;
      tile_image_height = (size_t) (destTop == (int) ntile_rows-1 ?
        (int) height % TILE_HEIGHT : TILE_HEIGHT);
      if (tile_image_height == 0)
        tile_image_height=TILE_HEIGHT;
      tile_image=CloneImage(inLayerInfo->image,tile_image_width,
        tile_image_height,MagickTrue,exception);

      /* read in the tile */
      switch (inDocInfo->compression)
      {
        case COMPRESS_NONE:
          if (load_tile(image,tile_image,inDocInfo,inLayerInfo,(size_t) (offset2-offset)) == 0)
            status=MagickTrue;
          break;
        case COMPRESS_RLE:
          if (load_tile_rle (image,tile_image,inDocInfo,inLayerInfo,
              (int) (offset2-offset)) == 0)
            status=MagickTrue;
          break;
        case COMPRESS_ZLIB:
          ThrowBinaryException(CoderError,"ZipCompressNotSupported",
            image->filename)
        case COMPRESS_FRACTAL:
//.........这里部分代码省略.........

void
APITests::testBasicOperations(int width, int height) {
  const PixelFormat format = PF_R8G8B8A8;
  const int bpp = 4;

  auto_ptr<Image> image(CreateImage(width, height, format));
  CPPUNIT_ASSERT(image->getWidth()  == width);
  CPPUNIT_ASSERT(image->getHeight() == height);
  CPPUNIT_ASSERT(image->getFormat() == format);

  // verify that the image is black
  byte* pixels = (byte*)image->getPixels();
  for (int i = 0; i < width * height * bpp; ++i) {
    CPPUNIT_ASSERT(pixels[i] == 0);
  }

  // fill the image with random pixels
  for (int i = 0; i < width * height * bpp; ++i) {
    pixels[i] = rand() % 256;
  }

  auto_ptr<Image> create_clone(
      CreateImage(image->getWidth(), image->getHeight(),
                  image->getFormat(), image->getPixels()));
  CPPUNIT_ASSERT(create_clone.get() != 0);
  CPPUNIT_ASSERT(image->getWidth()  == create_clone->getWidth());
  CPPUNIT_ASSERT(image->getHeight() == create_clone->getHeight());
  CPPUNIT_ASSERT(image->getFormat() == create_clone->getFormat());
  CPPUNIT_ASSERT(memcmp(image->getPixels(),
                        create_clone->getPixels(),
                        width * height * bpp) == 0);

  // clone the image (use same pixel format)
  auto_ptr<Image> identical_clone(CloneImage(image.get()));
  CPPUNIT_ASSERT(image->getWidth()  == identical_clone->getWidth());
  CPPUNIT_ASSERT(image->getHeight() == identical_clone->getHeight());
  CPPUNIT_ASSERT(image->getFormat() == identical_clone->getFormat());
  CPPUNIT_ASSERT(memcmp(image->getPixels(),
                        identical_clone->getPixels(),
                        width * height * bpp) == 0);

  // clone the image, removing the alpha channel
  auto_ptr<Image> other_clone(CloneImage(identical_clone.get(), PF_R8G8B8));
  CPPUNIT_ASSERT(image->getWidth()  == other_clone->getWidth());
  CPPUNIT_ASSERT(image->getHeight() == other_clone->getHeight());
  CPPUNIT_ASSERT(other_clone->getFormat() == PF_R8G8B8);
  byte* image_p = (byte*)image->getPixels();
  byte* other_p = (byte*)other_clone->getPixels();
  for (int i = 0; i < width * height; ++i) {
    CPPUNIT_ASSERT(*image_p++ == *other_p++);
    CPPUNIT_ASSERT(*image_p++ == *other_p++);
    CPPUNIT_ASSERT(*image_p++ == *other_p++);
    ++image_p;  // skip alpha
  }

  // flip the image
  // clone source first, since flip frees the original
  auto_ptr<Image> flip_none(FlipImage(CloneImage(image.get()), 0));
  auto_ptr<Image> flip_x   (FlipImage(CloneImage(image.get()), CA_X));
  auto_ptr<Image> flip_y   (FlipImage(CloneImage(image.get()), CA_Y));
  auto_ptr<Image> flip_xy  (FlipImage(CloneImage(image.get()), CA_X | CA_Y));

  AssertImagesEqual("No flipping", flip_none.get(), image.get());

  CPPUNIT_ASSERT(flip_x.get() != 0);
  CPPUNIT_ASSERT(width  == flip_x->getWidth());
  CPPUNIT_ASSERT(height == flip_x->getHeight());
  CPPUNIT_ASSERT(format == flip_x->getFormat());

  CPPUNIT_ASSERT(flip_y.get() != 0);
  CPPUNIT_ASSERT(width  == flip_y->getWidth());
  CPPUNIT_ASSERT(height == flip_y->getHeight());
  CPPUNIT_ASSERT(format == flip_y->getFormat());

  CPPUNIT_ASSERT(flip_xy.get() != 0);
  CPPUNIT_ASSERT(width  == flip_xy->getWidth()); 
  CPPUNIT_ASSERT(height == flip_xy->getHeight());
  CPPUNIT_ASSERT(format == flip_xy->getFormat());

  const byte* flip_x_pixels  = (const byte*)flip_x->getPixels();
  const byte* flip_y_pixels  = (const byte*)flip_y->getPixels();
  const byte* flip_xy_pixels = (const byte*)flip_xy->getPixels();

  for (int h = 0; h < height; h++) {
    for (int w = 0; w < width; w++) {
      const int image_index = (h * width + w) * bpp;
      const int opp_w = width  - 1 - w;
      const int opp_h = height - 1 - h;
      const int flip_x_index  = (opp_h * width + w) * bpp;
      const int flip_y_index  = (h * width + opp_w) * bpp;
      const int flip_xy_index = (opp_h * width + opp_w) * bpp;
      
      for (int p = 0; p < bpp; p++) {
        CPPUNIT_ASSERT(pixels[image_index] == flip_x_pixels [flip_x_index]);
        CPPUNIT_ASSERT(pixels[image_index] == flip_y_pixels [flip_y_index]);
        CPPUNIT_ASSERT(pixels[image_index] == flip_xy_pixels[flip_xy_index]);
      }
    }
  }

//.........这里部分代码省略.........

//.........这里部分代码省略.........
    *segment_stack;

  ssize_t
    offset,
    start,
    x,
    x1,
    x2,
    y;

  /*
    Check boundary conditions.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(draw_info != (DrawInfo *) NULL);
  assert(draw_info->signature == MagickSignature);
  if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
    return(MagickFalse);
  if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
    return(MagickFalse);
  if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
    return(MagickFalse);
  if (IsGrayColorspace(image->colorspace) != MagickFalse)
    (void) SetImageColorspace(image,sRGBColorspace,exception);
  if ((image->alpha_trait != BlendPixelTrait) &&
      (draw_info->fill.alpha_trait == BlendPixelTrait))
    (void) SetImageAlpha(image,OpaqueAlpha,exception);
  /*
    Set floodfill state.
  */
  floodplane_image=CloneImage(image,image->columns,image->rows,MagickTrue,
    exception);
  if (floodplane_image == (Image *) NULL)
    return(MagickFalse);
  floodplane_image->alpha_trait=UndefinedPixelTrait;
  floodplane_image->colorspace=GRAYColorspace;
  (void) QueryColorCompliance("#000",AllCompliance,
    &floodplane_image->background_color,exception);
  (void) SetImageBackgroundColor(floodplane_image,exception);
  segment_info=AcquireVirtualMemory(MaxStacksize,sizeof(*segment_stack));
  if (segment_info == (MemoryInfo *) NULL)
    {
      floodplane_image=DestroyImage(floodplane_image);
      ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
        image->filename);
    }
  segment_stack=(SegmentInfo *) GetVirtualMemoryBlob(segment_info);
  /*
    Push initial segment on stack.
  */
  status=MagickTrue;
  x=x_offset;
  y=y_offset;
  start=0;
  s=segment_stack;
  PushSegmentStack(y,x,x,1);
  PushSegmentStack(y+1,x,x,-1);
  GetPixelInfo(image,&pixel);
  image_view=AcquireVirtualCacheView(image,exception);
  floodplane_view=AcquireAuthenticCacheView(floodplane_image,exception);
  while (s > segment_stack)
  {
    register const Quantum

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e E P T I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WriteEPTImage() writes an image in the Encapsulated Postscript format
%  with a TIFF preview.
%
%  The format of the WriteEPTImage method is:
%
%      MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
%
%  A description of each parameter follows.
%
%    o image_info: the image info.
%
%    o image:  The image.
%
*/
static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
{
  EPTInfo
    ept_info;

  Image
    *write_image;

  ImageInfo
    *write_info;

  MagickBooleanType
    status;

  /*
    Write EPT image.
  */
  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);
  write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
  if (write_image == (Image *) NULL)
    return(MagickFalse);
  DestroyBlob(write_image);
  write_image->blob=CloneBlobInfo((BlobInfo *) NULL);
  write_info=CloneImageInfo(image_info);
  (void) CopyMagickString(write_info->magick,"EPS",MaxTextExtent);
  if (LocaleCompare(image_info->magick,"EPT2") == 0)
    (void) CopyMagickString(write_info->magick,"EPS2",MaxTextExtent);
  if (LocaleCompare(image_info->magick,"EPT3") == 0)
    (void) CopyMagickString(write_info->magick,"EPS3",MaxTextExtent);
  (void) ResetMagickMemory(&ept_info,0,sizeof(ept_info));
  ept_info.magick=0xc6d3d0c5ul;
  ept_info.postscript=(unsigned char *) ImageToBlob(write_info,write_image,
    &ept_info.postscript_length,&image->exception);
  write_image=DestroyImage(write_image);
  write_info=DestroyImageInfo(write_info);
  if (ept_info.postscript == (void *) NULL)
    return(MagickFalse);
  write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
  if (write_image == (Image *) NULL)
    return(MagickFalse);
  DestroyBlob(write_image);
  write_image->blob=CloneBlobInfo((BlobInfo *) NULL);
  write_info=CloneImageInfo(image_info);
  (void) CopyMagickString(write_info->magick,"TIFF",MaxTextExtent);
  (void) FormatMagickString(write_info->filename,MaxTextExtent,"tiff:%.1024s",
    write_info->filename); 
  (void) TransformImage(&write_image,(char *) NULL,"512x512>");
  if ((write_image->storage_class == DirectClass) ||
      (write_image->colors > 256))
    {
      QuantizeInfo
        quantize_info;

      /*
        EPT preview requires that the image is colormapped.
      */
      GetQuantizeInfo(&quantize_info);
      quantize_info.dither=IsPaletteImage(write_image,&image->exception) ==
        MagickFalse ? MagickTrue : MagickFalse;
      (void) QuantizeImage(&quantize_info,write_image);
    }
  write_image->compression=NoCompression;
  ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image,
    &ept_info.tiff_length,&image->exception);
  write_image=DestroyImage(write_image);
  write_info=DestroyImageInfo(write_info);
  if (ept_info.tiff == (void *) NULL)
//.........这里部分代码省略.........

  bool SavePNG(File* file, Image* image) {
    COR_GUARD("SavePNG");

    if (!image) {
      return false;
    }

    // If the image format isn't supported directly by this function,
    // clone to a supported format and try to save with that.
    switch (image->getFormat()) {
      case PF_R8G8B8A8:
      case PF_R8G8B8:
      case PF_I8:
	break;
      default: {
	COR_LOG("Unsupported pixel format... cloning");
	std::auto_ptr<Image> cloned(CloneImage(image, PF_R8G8B8A8));
	return SavePNG(file, cloned.get());
      }
    }

    // create write struct
    png_structp png_ptr = png_create_write_struct(
      PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
    if (!png_ptr) {
      return false;
    }

    // error handling!
    if (setjmp(png_jmpbuf(png_ptr))) {
      png_destroy_write_struct(&png_ptr, NULL);
      return false;
    }

    // create info struct
    png_infop info_ptr = png_create_info_struct(png_ptr);
    if (!info_ptr) {
      png_destroy_write_struct(&png_ptr, NULL);
      return false;
    }

    int width  = image->getWidth();
    int height = image->getHeight();

    // set image characteristics
    png_set_write_fn(png_ptr, file, PNG_write, PNG_flush);

    int color_format = 0; // png output format
    int color_format_bpp = 0; // png bytes per pixel
    bool color_format_paletted = false; // png palette needed flag

    // figure out output format
    switch (image->getFormat()) {
      case PF_R8G8B8A8:
        color_format = PNG_COLOR_TYPE_RGB_ALPHA;
        color_format_bpp = 4;
        break;
      case PF_R8G8B8:
        color_format = PNG_COLOR_TYPE_RGB;
        color_format_bpp = 3;
        break;
      case PF_I8:
        color_format = PNG_COLOR_TYPE_PALETTE;
        color_format_bpp = 1;
        color_format_paletted = true;
        break;
      default:
        // Unsupported format.  This should already be taken care of
        // by the test at the beginning of this function.
        return false;
    }
    png_set_IHDR(
      png_ptr, info_ptr,
      width, height,
      8,
      color_format,
      PNG_INTERLACE_NONE,
      PNG_COMPRESSION_TYPE_DEFAULT,
      PNG_FILTER_TYPE_DEFAULT);

    if (color_format_paletted) {
      COR_LOG("Saving palettized image...");

      int image_palette_format = image->getPaletteFormat(); // palette format
      int image_palette_size = image->getPaletteSize(); // palette size

      // allocate png palette and get pointer to image palette
      png_color* png_palette = (png_color*)png_malloc(
	png_ptr, sizeof(png_color) * image_palette_size);
      byte* image_palette = (byte*)image->getPalette();
      if (image_palette_format == PF_R8G8B8) {
	// 24 bit source palette
	for (int i = 0; i < image_palette_size; i++) {
	  // copy entry directly
	  png_palette[i].red   = *image_palette++;
	  png_palette[i].green = *image_palette++;
	  png_palette[i].blue  = *image_palette++;
	}
      } else if (image_palette_format == PF_R8G8B8A8) {
	// 32 bit source palette
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%     A f f i n e T r a n s f o r m I m a g e                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  AffineTransformImage() transforms an image as dictated by the affine matrix.
%  It allocates the memory necessary for the new Image structure and returns
%  a pointer to the new image.
%
%  The format of the AffineTransformImage method is:
%
%      Image *AffineTransformImage(const Image *image,AffineMatrix *affine,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: The image.
%
%    o affine: The affine transform.
%
%    o exception: Return any errors or warnings in this structure.
%
%
*/
MagickExport Image *AffineTransformImage(const Image *image,
  const AffineMatrix *affine,ExceptionInfo *exception)
{
  AffineMatrix
    transform;

  Image
    *affine_image;

  PointInfo
    extent[4],
    min,
    max,
    point;

  register long
    i;

  /*
    Determine bounding box.
  */
  assert(image != (const Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(affine != (AffineMatrix *) NULL);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  extent[0].x=0.0;
  extent[0].y=0.0;
  extent[1].x=(double) image->columns;
  extent[1].y=0.0;
  extent[2].x=(double) image->columns;
  extent[2].y=(double) image->rows;
  extent[3].x=0.0;
  extent[3].y=(double) image->rows;
  for (i=0; i < 4; i++)
  {
    point=extent[i];
    extent[i].x=(double) (point.x*affine->sx+point.y*affine->ry+affine->tx);
    extent[i].y=(double) (point.x*affine->rx+point.y*affine->sy+affine->ty);
  }
  min=extent[0];
  max=extent[0];
  for (i=1; i < 4; i++)
  {
    if (min.x > extent[i].x)
      min.x=extent[i].x;
    if (min.y > extent[i].y)
      min.y=extent[i].y;
    if (max.x < extent[i].x)
      max.x=extent[i].x;
    if (max.y < extent[i].y)
      max.y=extent[i].y;
  }
  /*
    Affine transform image.
  */
  affine_image=CloneImage(image,(unsigned long) (max.x-min.x+0.5),
    (unsigned long) (max.y-min.y+0.5),MagickTrue,exception);
  if (affine_image == (Image *) NULL)
    return((Image *) NULL);
  affine_image->background_color.opacity=TransparentOpacity;
  SetImageBackgroundColor(affine_image);
  transform.sx=affine->sx;
  transform.rx=affine->rx;
  transform.ry=affine->ry;
  transform.sy=affine->sy;
  transform.tx=min.x;
  transform.ty=min.y;
  (void) DrawAffineImage(affine_image,image,&transform);
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   F r a m e I m a g e                                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  FrameImage() adds a simulated three-dimensional border around the image.
%  The color of the border is defined by the matte_color member of image.
%  Members width and height of frame_info specify the border width of the
%  vertical and horizontal sides of the frame.  Members inner and outer
%  indicate the width of the inner and outer shadows of the frame.
%
%  The format of the FrameImage method is:
%
%      Image *FrameImage(const Image *image,const FrameInfo *frame_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o frame_info: Define the width and height of the frame and its bevels.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *FrameImage(const Image *image,const FrameInfo *frame_info,
  ExceptionInfo *exception)
{
#define FrameImageTag  "Frame/Image"

  CacheView
    *image_view,
    *frame_view;

  Image
    *frame_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  MagickPixelPacket
    accentuate,
    border,
    highlight,
    interior,
    matte,
    shadow,
    trough;

  register ssize_t
    x;

  size_t
    bevel_width,
    height,
    width;

  ssize_t
    y;

  /*
    Check frame geometry.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(frame_info != (FrameInfo *) NULL);
  if ((frame_info->outer_bevel < 0) || (frame_info->inner_bevel < 0))
    ThrowImageException(OptionError,"FrameIsLessThanImageSize");
  bevel_width=(size_t) (frame_info->outer_bevel+frame_info->inner_bevel);
  width=frame_info->width-frame_info->x-bevel_width;
  height=frame_info->height-frame_info->y-bevel_width;
  if ((width < image->columns) || (height < image->rows))
    ThrowImageException(OptionError,"FrameIsLessThanImageSize");
  /*
    Initialize framed image attributes.
  */
  frame_image=CloneImage(image,frame_info->width,frame_info->height,MagickTrue,
    exception);
  if (frame_image == (Image *) NULL)
    return((Image *) NULL);
  if (SetImageStorageClass(frame_image,DirectClass) == MagickFalse)
    {
      InheritException(exception,&frame_image->exception);
      frame_image=DestroyImage(frame_image);
      return((Image *) NULL);
    }
  if ((IsPixelGray(&frame_image->border_color) == MagickFalse) &&
      (IsGrayColorspace(frame_image->colorspace) != MagickFalse))
    (void) SetImageColorspace(frame_image,RGBColorspace);
//.........这里部分代码省略.........

MagickExport Image *OilPaintImage(const Image *image,const double radius,
  const double sigma,ExceptionInfo *exception)
{
#define NumberPaintBins  256
#define OilPaintImageTag  "OilPaint/Image"

  CacheView
    *image_view,
    *paint_view;

  Image
    *linear_image,
    *paint_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  size_t
    **histograms,
    width;

  ssize_t
    center,
    y;

  /*
    Initialize painted image attributes.
  */
  assert(image != (const 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);
  width=GetOptimalKernelWidth2D(radius,sigma);
  linear_image=CloneImage(image,0,0,MagickTrue,exception);
  paint_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
  if ((linear_image == (Image *) NULL) || (paint_image == (Image *) NULL))
    {
      if (linear_image != (Image *) NULL)
        linear_image=DestroyImage(linear_image);
      if (paint_image != (Image *) NULL)
        linear_image=DestroyImage(paint_image);
      return((Image *) NULL);
    }
  if (SetImageStorageClass(paint_image,DirectClass,exception) == MagickFalse)
    {
      linear_image=DestroyImage(linear_image);
      paint_image=DestroyImage(paint_image);
      return((Image *) NULL);
    }
  histograms=AcquireHistogramThreadSet(NumberPaintBins);
  if (histograms == (size_t **) NULL)
    {
      linear_image=DestroyImage(linear_image);
      paint_image=DestroyImage(paint_image);
      ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
    }
  /*
    Oil paint image.
  */
  status=MagickTrue;
  progress=0;
  center=(ssize_t) GetPixelChannels(linear_image)*(linear_image->columns+width)*
    (width/2L)+GetPixelChannels(linear_image)*(width/2L);
  image_view=AcquireVirtualCacheView(linear_image,exception);
  paint_view=AcquireAuthenticCacheView(paint_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static,4) shared(progress,status) \
    magick_threads(linear_image,paint_image,linear_image->rows,1)
#endif
  for (y=0; y < (ssize_t) linear_image->rows; y++)
  {
    register const Quantum
      *restrict p;

    register Quantum
      *restrict q;

    register size_t
      *histogram;

    register ssize_t
      x;

    if (status == MagickFalse)
      continue;
    p=GetCacheViewVirtualPixels(image_view,-((ssize_t) width/2L),y-(ssize_t)
      (width/2L),linear_image->columns+width,width,exception);
    q=QueueCacheViewAuthenticPixels(paint_view,0,y,paint_image->columns,1,
      exception);
    if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
      {
        status=MagickFalse;
        continue;
      }
    histogram=histograms[GetOpenMPThreadId()];
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d Y C b C r I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadYCBCRImage() reads an image of raw YCbCr or YCbCrA samples 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 ReadYCBCRImage method is:
%
%      Image *ReadYCBCRImage(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 *ReadYCBCRImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *canvas_image,
    *image;

  ssize_t
    y;

  MagickBooleanType
    status;

  MagickOffsetType
    scene;

  QuantumInfo
    *quantum_info;

  QuantumType
    quantum_type;

  register const PixelPacket
    *p;

  register ssize_t
    i,
    x;

  register PixelPacket
    *q;

  ssize_t
    count;

  size_t
    length;

  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);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  image->colorspace=YCbCrColorspace;
  if (image_info->interlace != PartitionInterlace)
    {
      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);
    }
  /*
    Create virtual canvas to support cropping (i.e. image.rgb[100x100+10+20]).
  */
  canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse,
    exception);
  (void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod);
//.........这里部分代码省略.........