forked from openkylin/imagemagick
960 lines
33 KiB
C
960 lines
33 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% X X W W DDDD %
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% X X W W D D %
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% X W W D D %
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% X X W W W D D %
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% X X W W DDDD %
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% %
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% %
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% Read/Write X Windows System Window Dump Format %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/attribute.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/color-private.h"
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#include "magick/colormap.h"
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#include "magick/colormap-private.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/list.h"
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#include "magick/magick.h"
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#include "magick/memory_.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/property.h"
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#include "magick/quantum-private.h"
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#include "magick/static.h"
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#include "magick/string_.h"
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#include "magick/module.h"
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#if defined(MAGICKCORE_X11_DELEGATE)
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#include "magick/xwindow-private.h"
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#if !defined(vms)
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#include <X11/XWDFile.h>
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#else
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#include "XWDFile.h"
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#endif
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#endif
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/*
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Forward declarations.
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*/
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#if defined(MAGICKCORE_X11_DELEGATE)
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static MagickBooleanType
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WriteXWDImage(const ImageInfo *,Image *);
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#endif
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s X W D %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsXWD() returns MagickTrue if the image format type, identified by the
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% magick string, is XWD.
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%
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% The format of the IsXWD method is:
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%
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% MagickBooleanType IsXWD(const unsigned char *magick,const size_t length)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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*/
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static MagickBooleanType IsXWD(const unsigned char *magick,const size_t length)
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{
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if (length < 8)
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return(MagickFalse);
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if (memcmp(magick+1,"\000\000",2) == 0)
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{
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if (memcmp(magick+4,"\007\000\000",3) == 0)
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return(MagickTrue);
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if (memcmp(magick+5,"\000\000\007",3) == 0)
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return(MagickTrue);
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}
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return(MagickFalse);
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}
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#if defined(MAGICKCORE_X11_DELEGATE)
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d X W D I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadXWDImage() reads an X Window System window dump image file and
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% returns it. It allocates the memory necessary for the new Image structure
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% and returns a pointer to the new image.
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%
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% The format of the ReadXWDImage method is:
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%
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% Image *ReadXWDImage(const ImageInfo *image_info,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadXWDImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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#define CheckOverflowException(length,width,height) \
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(((height) != 0) && ((length)/((size_t) height) != ((size_t) width)))
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char
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*comment;
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Image
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*image;
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IndexPacket
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index;
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int
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x_status;
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MagickBooleanType
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authentic_colormap;
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MagickStatusType
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status;
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IndexPacket
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*indexes;
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ssize_t
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x;
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PixelPacket
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*q;
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ssize_t
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i;
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size_t
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pixel;
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size_t
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length;
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ssize_t
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count,
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y;
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unsigned long
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lsb_first;
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XColor
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*colors;
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XImage
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*ximage;
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XWDFileHeader
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header;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickCoreSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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image=AcquireImage(image_info);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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/*
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Read in header information.
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*/
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count=ReadBlob(image,sz_XWDheader,(unsigned char *) &header);
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if (count != sz_XWDheader)
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ThrowReaderException(CorruptImageError,"UnableToReadImageHeader");
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/*
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Ensure the header byte-order is most-significant byte first.
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*/
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lsb_first=1;
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if ((int) (*(char *) &lsb_first) != 0)
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MSBOrderLong((unsigned char *) &header,sz_XWDheader);
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/*
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Check to see if the dump file is in the proper format.
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*/
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if (header.file_version != XWD_FILE_VERSION)
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ThrowReaderException(CorruptImageError,"FileFormatVersionMismatch");
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if (header.header_size < sz_XWDheader)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if (header.xoffset >= header.pixmap_width)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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switch (header.visual_class)
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{
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case StaticGray:
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case GrayScale:
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{
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if (header.bits_per_pixel != 1)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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break;
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}
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case StaticColor:
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case PseudoColor:
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{
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if ((header.bits_per_pixel < 1) || (header.bits_per_pixel > 15) ||
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(header.ncolors == 0))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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break;
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}
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case TrueColor:
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case DirectColor:
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{
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if ((header.bits_per_pixel != 16) && (header.bits_per_pixel != 24) &&
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(header.bits_per_pixel != 32))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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break;
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}
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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switch (header.pixmap_format)
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{
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case XYBitmap:
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{
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if (header.pixmap_depth != 1)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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break;
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}
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case XYPixmap:
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case ZPixmap:
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{
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if ((header.pixmap_depth < 1) || (header.pixmap_depth > 32))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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switch (header.bitmap_pad)
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{
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case 8:
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case 16:
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case 32:
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break;
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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break;
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}
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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switch (header.bitmap_unit)
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{
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case 8:
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case 16:
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case 32:
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break;
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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switch (header.byte_order)
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{
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case LSBFirst:
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case MSBFirst:
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break;
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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switch (header.bitmap_bit_order)
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{
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case LSBFirst:
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case MSBFirst:
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break;
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default:
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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if (((header.bitmap_pad % 8) != 0) || (header.bitmap_pad > 32))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if (header.ncolors > 65535)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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length=(size_t) (header.header_size-sz_XWDheader);
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if ((length+1) != ((size_t) ((CARD32) (length+1))))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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comment=(char *) AcquireQuantumMemory(length+1,sizeof(*comment));
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if (comment == (char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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count=ReadBlob(image,length,(unsigned char *) comment);
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comment[length]='\0';
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(void) SetImageProperty(image,"comment",comment);
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comment=DestroyString(comment);
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if (count != (ssize_t) length)
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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/*
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Initialize the X image.
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*/
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ximage=(XImage *) AcquireMagickMemory(sizeof(*ximage));
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if (ximage == (XImage *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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ximage->depth=(int) header.pixmap_depth;
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ximage->format=(int) header.pixmap_format;
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ximage->xoffset=(int) header.xoffset;
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ximage->data=(char *) NULL;
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ximage->width=(int) header.pixmap_width;
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ximage->height=(int) header.pixmap_height;
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ximage->bitmap_pad=(int) header.bitmap_pad;
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ximage->bytes_per_line=(int) header.bytes_per_line;
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ximage->byte_order=(int) header.byte_order;
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ximage->bitmap_unit=(int) header.bitmap_unit;
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ximage->bitmap_bit_order=(int) header.bitmap_bit_order;
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ximage->bits_per_pixel=(int) header.bits_per_pixel;
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ximage->red_mask=header.red_mask;
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ximage->green_mask=header.green_mask;
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ximage->blue_mask=header.blue_mask;
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if ((ximage->depth < 0) || (ximage->format < 0) || (ximage->xoffset < 0) ||
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(ximage->width < 0) || (ximage->height < 0) || (ximage->bitmap_pad < 0) ||
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(ximage->bytes_per_line < 0) || (ximage->byte_order < 0) ||
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(ximage->bitmap_unit < 0) || (ximage->bitmap_bit_order < 0) ||
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(ximage->bits_per_pixel < 0))
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{
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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if ((ximage->width > 65535) || (ximage->height > 65535))
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{
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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if ((ximage->bits_per_pixel > 32) || (ximage->bitmap_unit > 32))
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{
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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x_status=XInitImage(ximage);
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if (x_status == 0)
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{
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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}
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/*
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Read colormap.
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*/
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authentic_colormap=MagickFalse;
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colors=(XColor *) NULL;
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if (header.ncolors != 0)
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{
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XWDColor
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color;
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colors=(XColor *) AcquireQuantumMemory((size_t) header.ncolors,
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sizeof(*colors));
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if (colors == (XColor *) NULL)
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{
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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for (i=0; i < (ssize_t) header.ncolors; i++)
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{
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count=ReadBlob(image,sz_XWDColor,(unsigned char *) &color);
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if (count != sz_XWDColor)
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{
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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}
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colors[i].pixel=color.pixel;
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colors[i].red=color.red;
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colors[i].green=color.green;
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colors[i].blue=color.blue;
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colors[i].flags=(char) color.flags;
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if (color.flags != 0)
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authentic_colormap=MagickTrue;
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}
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/*
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Ensure the header byte-order is most-significant byte first.
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*/
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lsb_first=1;
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if ((int) (*(char *) &lsb_first) != 0)
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for (i=0; i < (ssize_t) header.ncolors; i++)
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{
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MSBOrderLong((unsigned char *) &colors[i].pixel,
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sizeof(colors[i].pixel));
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MSBOrderShort((unsigned char *) &colors[i].red,3*
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sizeof(colors[i].red));
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}
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}
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/*
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Allocate the pixel buffer.
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*/
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length=(size_t) ximage->bytes_per_line*ximage->height;
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if (CheckOverflowException(length,ximage->bytes_per_line,ximage->height))
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{
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if (header.ncolors != 0)
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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if (ximage->format != ZPixmap)
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{
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size_t
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extent;
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extent=length;
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length*=ximage->depth;
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if (CheckOverflowException(length,extent,ximage->depth))
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{
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if (header.ncolors != 0)
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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}
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ximage->data=(char *) AcquireQuantumMemory(length,sizeof(*ximage->data));
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if (ximage->data == (char *) NULL)
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{
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if (header.ncolors != 0)
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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count=ReadBlob(image,length,(unsigned char *) ximage->data);
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if (count != (ssize_t) length)
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{
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if (header.ncolors != 0)
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage->data=DestroyString(ximage->data);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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}
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/*
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Convert image to MIFF format.
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*/
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image->columns=(size_t) ximage->width;
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image->rows=(size_t) ximage->height;
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image->depth=8;
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status=SetImageExtent(image,image->columns,image->rows);
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if (status == MagickFalse)
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{
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if (header.ncolors != 0)
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colors=(XColor *) RelinquishMagickMemory(colors);
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ximage->data=DestroyString(ximage->data);
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ximage=(XImage *) RelinquishMagickMemory(ximage);
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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}
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if ((header.ncolors == 0U) || (ximage->red_mask != 0) ||
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(ximage->green_mask != 0) || (ximage->blue_mask != 0))
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image->storage_class=DirectClass;
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else
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image->storage_class=PseudoClass;
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image->colors=header.ncolors;
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if (image_info->ping == MagickFalse)
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switch (image->storage_class)
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{
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case DirectClass:
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default:
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{
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size_t
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color;
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size_t
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blue_mask,
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blue_shift,
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green_mask,
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green_shift,
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red_mask,
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red_shift;
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/*
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Determine shift and mask for red, green, and blue.
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*/
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red_mask=ximage->red_mask;
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red_shift=0;
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while ((red_mask != 0) && ((red_mask & 0x01) == 0))
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{
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red_mask>>=1;
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red_shift++;
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}
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green_mask=ximage->green_mask;
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green_shift=0;
|
||
while ((green_mask != 0) && ((green_mask & 0x01) == 0))
|
||
{
|
||
green_mask>>=1;
|
||
green_shift++;
|
||
}
|
||
blue_mask=ximage->blue_mask;
|
||
blue_shift=0;
|
||
while ((blue_mask != 0) && ((blue_mask & 0x01) == 0))
|
||
{
|
||
blue_mask>>=1;
|
||
blue_shift++;
|
||
}
|
||
/*
|
||
Convert X image to DirectClass packets.
|
||
*/
|
||
if ((image->colors != 0) && (authentic_colormap != MagickFalse))
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
pixel=XGetPixel(ximage,(int) x,(int) y);
|
||
index=ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
||
red_shift) & red_mask);
|
||
SetPixelRed(q,ScaleShortToQuantum(colors[(ssize_t) index].red));
|
||
index=ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
||
green_shift) & green_mask);
|
||
SetPixelGreen(q,ScaleShortToQuantum(colors[(ssize_t)
|
||
index].green));
|
||
index=ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
||
blue_shift) & blue_mask);
|
||
SetPixelBlue(q,ScaleShortToQuantum(colors[(ssize_t) index].blue));
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
else
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
pixel=XGetPixel(ximage,(int) x,(int) y);
|
||
color=(pixel >> red_shift) & red_mask;
|
||
if (red_mask != 0)
|
||
color=(color*65535UL)/red_mask;
|
||
SetPixelRed(q,ScaleShortToQuantum((unsigned short) color));
|
||
color=(pixel >> green_shift) & green_mask;
|
||
if (green_mask != 0)
|
||
color=(color*65535UL)/green_mask;
|
||
SetPixelGreen(q,ScaleShortToQuantum((unsigned short) color));
|
||
color=(pixel >> blue_shift) & blue_mask;
|
||
if (blue_mask != 0)
|
||
color=(color*65535UL)/blue_mask;
|
||
SetPixelBlue(q,ScaleShortToQuantum((unsigned short) color));
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case PseudoClass:
|
||
{
|
||
/*
|
||
Convert X image to PseudoClass packets.
|
||
*/
|
||
if (AcquireImageColormap(image,image->colors) == MagickFalse)
|
||
{
|
||
if (header.ncolors != 0)
|
||
colors=(XColor *) RelinquishMagickMemory(colors);
|
||
ximage->data=DestroyString(ximage->data);
|
||
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
}
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
{
|
||
image->colormap[i].red=ScaleShortToQuantum(colors[i].red);
|
||
image->colormap[i].green=ScaleShortToQuantum(colors[i].green);
|
||
image->colormap[i].blue=ScaleShortToQuantum(colors[i].blue);
|
||
}
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
index=ConstrainColormapIndex(image,(ssize_t) XGetPixel(ximage,(int)
|
||
x,(int) y));
|
||
SetPixelIndex(indexes+x,index);
|
||
SetPixelRGBO(q,image->colormap+(ssize_t) index);
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
/*
|
||
Free image and colormap.
|
||
*/
|
||
if (header.ncolors != 0)
|
||
colors=(XColor *) RelinquishMagickMemory(colors);
|
||
ximage->data=DestroyString(ximage->data);
|
||
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
||
if (EOFBlob(image) != MagickFalse)
|
||
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
||
image->filename);
|
||
(void) CloseBlob(image);
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r X W D I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterXWDImage() adds properties for the XWD image format to
|
||
% the list of supported formats. The properties include the image format
|
||
% tag, a method to read and/or write the format, whether the format
|
||
% supports the saving of more than one frame to the same file or blob,
|
||
% whether the format supports native in-memory I/O, and a brief
|
||
% description of the format.
|
||
%
|
||
% The format of the RegisterXWDImage method is:
|
||
%
|
||
% size_t RegisterXWDImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterXWDImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("XWD");
|
||
#if defined(MAGICKCORE_X11_DELEGATE)
|
||
entry->decoder=(DecodeImageHandler *) ReadXWDImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteXWDImage;
|
||
#endif
|
||
entry->magick=(IsImageFormatHandler *) IsXWD;
|
||
entry->adjoin=MagickFalse;
|
||
entry->description=ConstantString("X Windows system window dump (color)");
|
||
entry->magick_module=ConstantString("XWD");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r X W D I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterXWDImage() removes format registrations made by the
|
||
% XWD module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterXWDImage method is:
|
||
%
|
||
% UnregisterXWDImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterXWDImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("XWD");
|
||
}
|
||
|
||
#if defined(MAGICKCORE_X11_DELEGATE)
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e X W D I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteXWDImage() writes an image to a file in X window dump
|
||
% rasterfile format.
|
||
%
|
||
% The format of the WriteXWDImage method is:
|
||
%
|
||
% MagickBooleanType WriteXWDImage(const ImageInfo *image_info,Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
static MagickBooleanType WriteXWDImage(const ImageInfo *image_info,Image *image)
|
||
{
|
||
const char
|
||
*value;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
const IndexPacket
|
||
*indexes;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
unsigned char
|
||
*q;
|
||
|
||
size_t
|
||
bits_per_pixel,
|
||
bytes_per_line,
|
||
length,
|
||
scanline_pad;
|
||
|
||
ssize_t
|
||
count,
|
||
y;
|
||
|
||
unsigned char
|
||
*pixels;
|
||
|
||
unsigned long
|
||
lsb_first;
|
||
|
||
XWDFileHeader
|
||
xwd_info;
|
||
|
||
/*
|
||
Open output image file.
|
||
*/
|
||
assert(image_info != (const ImageInfo *) NULL);
|
||
assert(image_info->signature == MagickCoreSignature);
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
if ((image->columns != (CARD32) image->columns) ||
|
||
(image->rows != (CARD32) image->rows))
|
||
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
||
if ((image->storage_class == PseudoClass) && (image->colors > 256))
|
||
(void) SetImageType(image,TrueColorType);
|
||
(void) TransformImageColorspace(image,sRGBColorspace);
|
||
/*
|
||
Initialize XWD file header.
|
||
*/
|
||
(void) memset(&xwd_info,0,sizeof(xwd_info));
|
||
xwd_info.header_size=(CARD32) sz_XWDheader;
|
||
value=GetImageProperty(image,"comment");
|
||
if (value != (const char *) NULL)
|
||
xwd_info.header_size+=(CARD32) strlen(value);
|
||
xwd_info.header_size++;
|
||
xwd_info.file_version=(CARD32) XWD_FILE_VERSION;
|
||
xwd_info.pixmap_format=(CARD32) ZPixmap;
|
||
xwd_info.pixmap_depth=(CARD32) (image->storage_class == DirectClass ? 24 : 8);
|
||
xwd_info.pixmap_width=(CARD32) image->columns;
|
||
xwd_info.pixmap_height=(CARD32) image->rows;
|
||
xwd_info.xoffset=(CARD32) 0;
|
||
xwd_info.byte_order=(CARD32) MSBFirst;
|
||
xwd_info.bitmap_unit=(CARD32) (image->storage_class == DirectClass ? 32 : 8);
|
||
xwd_info.bitmap_bit_order=(CARD32) MSBFirst;
|
||
xwd_info.bitmap_pad=(CARD32) (image->storage_class == DirectClass ? 32 : 8);
|
||
bits_per_pixel=(size_t) (image->storage_class == DirectClass ? 24 : 8);
|
||
xwd_info.bits_per_pixel=(CARD32) bits_per_pixel;
|
||
bytes_per_line=(CARD32) ((((xwd_info.bits_per_pixel*
|
||
xwd_info.pixmap_width)+((xwd_info.bitmap_pad)-1))/
|
||
(xwd_info.bitmap_pad))*((xwd_info.bitmap_pad) >> 3));
|
||
xwd_info.bytes_per_line=(CARD32) bytes_per_line;
|
||
xwd_info.visual_class=(CARD32)
|
||
(image->storage_class == DirectClass ? DirectColor : PseudoColor);
|
||
xwd_info.red_mask=(CARD32)
|
||
(image->storage_class == DirectClass ? 0xff0000 : 0);
|
||
xwd_info.green_mask=(CARD32)
|
||
(image->storage_class == DirectClass ? 0xff00 : 0);
|
||
xwd_info.blue_mask=(CARD32) (image->storage_class == DirectClass ? 0xff : 0);
|
||
xwd_info.bits_per_rgb=(CARD32) (image->storage_class == DirectClass ? 24 : 8);
|
||
xwd_info.colormap_entries=(CARD32)
|
||
(image->storage_class == DirectClass ? 256 : image->colors);
|
||
xwd_info.ncolors=(unsigned int)
|
||
(image->storage_class == DirectClass ? 0 : image->colors);
|
||
xwd_info.window_width=(CARD32) image->columns;
|
||
xwd_info.window_height=(CARD32) image->rows;
|
||
xwd_info.window_x=0;
|
||
xwd_info.window_y=0;
|
||
xwd_info.window_bdrwidth=(CARD32) 0;
|
||
/*
|
||
Write XWD header.
|
||
*/
|
||
lsb_first=1;
|
||
if ((int) (*(char *) &lsb_first) != 0)
|
||
MSBOrderLong((unsigned char *) &xwd_info,sizeof(xwd_info));
|
||
(void) WriteBlob(image,sz_XWDheader,(unsigned char *) &xwd_info);
|
||
if (value != (const char *) NULL)
|
||
(void) WriteBlob(image,strlen(value),(unsigned char *) value);
|
||
(void) WriteBlob(image,1,(const unsigned char *) "\0");
|
||
if (image->storage_class == PseudoClass)
|
||
{
|
||
ssize_t
|
||
i;
|
||
|
||
XColor
|
||
*colors;
|
||
|
||
XWDColor
|
||
color;
|
||
|
||
/*
|
||
Dump colormap to file.
|
||
*/
|
||
(void) memset(&color,0,sizeof(color));
|
||
colors=(XColor *) AcquireQuantumMemory((size_t) image->colors,
|
||
sizeof(*colors));
|
||
if (colors == (XColor *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
{
|
||
colors[i].pixel=(unsigned long) i;
|
||
colors[i].red=ScaleQuantumToShort(image->colormap[i].red);
|
||
colors[i].green=ScaleQuantumToShort(image->colormap[i].green);
|
||
colors[i].blue=ScaleQuantumToShort(image->colormap[i].blue);
|
||
colors[i].flags=(char) (DoRed | DoGreen | DoBlue);
|
||
colors[i].pad='\0';
|
||
if ((int) (*(char *) &lsb_first) != 0)
|
||
{
|
||
MSBOrderLong((unsigned char *) &colors[i].pixel,
|
||
sizeof(colors[i].pixel));
|
||
MSBOrderShort((unsigned char *) &colors[i].red,3*
|
||
sizeof(colors[i].red));
|
||
}
|
||
}
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
{
|
||
color.pixel=(CARD32) colors[i].pixel;
|
||
color.red=colors[i].red;
|
||
color.green=colors[i].green;
|
||
color.blue=colors[i].blue;
|
||
color.flags=(CARD8) colors[i].flags;
|
||
count=WriteBlob(image,sz_XWDColor,(unsigned char *) &color);
|
||
if (count != (ssize_t) sz_XWDColor)
|
||
break;
|
||
}
|
||
colors=(XColor *) RelinquishMagickMemory(colors);
|
||
}
|
||
/*
|
||
Allocate memory for pixels.
|
||
*/
|
||
length=3*bytes_per_line;
|
||
if (image->storage_class == PseudoClass)
|
||
length=bytes_per_line;
|
||
pixels=(unsigned char *) AcquireQuantumMemory(length,sizeof(*pixels));
|
||
if (pixels == (unsigned char *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) memset(pixels,0,length);
|
||
/*
|
||
Convert MIFF to XWD raster pixels.
|
||
*/
|
||
scanline_pad=(bytes_per_line-((image->columns*bits_per_pixel) >> 3));
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
q=pixels;
|
||
if (image->storage_class == PseudoClass)
|
||
{
|
||
indexes=GetVirtualIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
*q++=(unsigned char) ((size_t) GetPixelIndex(indexes+x));
|
||
}
|
||
else
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
*q++=ScaleQuantumToChar(GetPixelRed(p));
|
||
*q++=ScaleQuantumToChar(GetPixelGreen(p));
|
||
*q++=ScaleQuantumToChar(GetPixelBlue(p));
|
||
p++;
|
||
}
|
||
for (x=0; x < (ssize_t) scanline_pad; x++)
|
||
*q++='\0';
|
||
length=(size_t) (q-pixels);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
|
||
(void) CloseBlob(image);
|
||
return(y < (ssize_t) image->rows ? MagickFalse : MagickTrue);
|
||
}
|
||
#endif
|