|
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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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|
% %
|
|
|
% Software Design %
|
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|
% Cristy %
|
|
|
% July 1992 %
|
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|
% %
|
|
|
% %
|
|
|
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
|
|
|
% dedicated to making software imaging solutions freely available. %
|
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|
% %
|
|
|
% You may not use this file except in compliance with the License. You may %
|
|
|
% obtain a copy of the License at %
|
|
|
% %
|
|
|
% https://imagemagick.org/script/license.php %
|
|
|
% %
|
|
|
% Unless required by applicable law or agreed to in writing, software %
|
|
|
% distributed under the License is distributed on an "AS IS" BASIS, %
|
|
|
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
|
|
|
% See the License for the specific language governing permissions and %
|
|
|
% limitations under the License. %
|
|
|
% %
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|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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|
%
|
|
|
%
|
|
|
*/
|
|
|
|
|
|
/*
|
|
|
Include declarations.
|
|
|
*/
|
|
|
#include "MagickCore/studio.h"
|
|
|
#include "MagickCore/attribute.h"
|
|
|
#include "MagickCore/blob.h"
|
|
|
#include "MagickCore/blob-private.h"
|
|
|
#include "MagickCore/cache.h"
|
|
|
#include "MagickCore/color-private.h"
|
|
|
#include "MagickCore/colormap.h"
|
|
|
#include "MagickCore/colormap-private.h"
|
|
|
#include "MagickCore/colorspace.h"
|
|
|
#include "MagickCore/colorspace-private.h"
|
|
|
#include "MagickCore/exception.h"
|
|
|
#include "MagickCore/exception-private.h"
|
|
|
#include "MagickCore/image.h"
|
|
|
#include "MagickCore/image-private.h"
|
|
|
#include "MagickCore/list.h"
|
|
|
#include "MagickCore/magick.h"
|
|
|
#include "MagickCore/memory_.h"
|
|
|
#include "MagickCore/monitor.h"
|
|
|
#include "MagickCore/monitor-private.h"
|
|
|
#include "MagickCore/pixel-accessor.h"
|
|
|
#include "MagickCore/property.h"
|
|
|
#include "MagickCore/quantum-private.h"
|
|
|
#include "MagickCore/static.h"
|
|
|
#include "MagickCore/string_.h"
|
|
|
#include "MagickCore/module.h"
|
|
|
#if defined(MAGICKCORE_X11_DELEGATE)
|
|
|
#include "MagickCore/xwindow-private.h"
|
|
|
#if !defined(vms)
|
|
|
#include <X11/XWDFile.h>
|
|
|
#else
|
|
|
#include "XWDFile.h"
|
|
|
#endif
|
|
|
#endif
|
|
|
|
|
|
/*
|
|
|
Forward declarations.
|
|
|
*/
|
|
|
#if defined(MAGICKCORE_X11_DELEGATE)
|
|
|
static MagickBooleanType
|
|
|
WriteXWDImage(const ImageInfo *,Image *,ExceptionInfo *);
|
|
|
#endif
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% I s X W D %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% IsXWD() returns MagickTrue if the image format type, identified by the
|
|
|
% magick string, is XWD.
|
|
|
%
|
|
|
% The format of the IsXWD method is:
|
|
|
%
|
|
|
% MagickBooleanType IsXWD(const unsigned char *magick,const size_t length)
|
|
|
%
|
|
|
% A description of each parameter follows:
|
|
|
%
|
|
|
% o magick: compare image format pattern against these bytes.
|
|
|
%
|
|
|
% o length: Specifies the length of the magick string.
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType IsXWD(const unsigned char *magick,const size_t length)
|
|
|
{
|
|
|
if (length < 8)
|
|
|
return(MagickFalse);
|
|
|
if (memcmp(magick+1,"\000\000",2) == 0)
|
|
|
{
|
|
|
if (memcmp(magick+4,"\007\000\000",3) == 0)
|
|
|
return(MagickTrue);
|
|
|
if (memcmp(magick+5,"\000\000\007",3) == 0)
|
|
|
return(MagickTrue);
|
|
|
}
|
|
|
return(MagickFalse);
|
|
|
}
|
|
|
|
|
|
#if defined(MAGICKCORE_X11_DELEGATE)
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% R e a d X W D I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% ReadXWDImage() reads an X Window System window dump 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 ReadXWDImage method is:
|
|
|
%
|
|
|
% Image *ReadXWDImage(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 *ReadXWDImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
|
|
{
|
|
|
#define CheckOverflowException(length,width,height) \
|
|
|
(((height) != 0) && ((length)/((size_t) height) != ((size_t) width)))
|
|
|
|
|
|
char
|
|
|
*comment;
|
|
|
|
|
|
Image
|
|
|
*image;
|
|
|
|
|
|
int
|
|
|
x_status;
|
|
|
|
|
|
MagickBooleanType
|
|
|
authentic_colormap;
|
|
|
|
|
|
MagickStatusType
|
|
|
status;
|
|
|
|
|
|
Quantum
|
|
|
index;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
Quantum
|
|
|
*q;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
size_t
|
|
|
pixel;
|
|
|
|
|
|
size_t
|
|
|
length;
|
|
|
|
|
|
ssize_t
|
|
|
count,
|
|
|
y;
|
|
|
|
|
|
unsigned long
|
|
|
lsb_first;
|
|
|
|
|
|
XColor
|
|
|
*colors;
|
|
|
|
|
|
XImage
|
|
|
*ximage;
|
|
|
|
|
|
XWDFileHeader
|
|
|
header;
|
|
|
|
|
|
/*
|
|
|
Open image file.
|
|
|
*/
|
|
|
assert(image_info != (const ImageInfo *) NULL);
|
|
|
assert(image_info->signature == MagickCoreSignature);
|
|
|
if (image_info->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
|
|
|
image_info->filename);
|
|
|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
image=AcquireImage(image_info,exception);
|
|
|
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
image=DestroyImageList(image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
/*
|
|
|
Read in header information.
|
|
|
*/
|
|
|
count=ReadBlob(image,sz_XWDheader,(unsigned char *) &header);
|
|
|
if (count != sz_XWDheader)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageHeader");
|
|
|
/*
|
|
|
Ensure the header byte-order is most-significant byte first.
|
|
|
*/
|
|
|
lsb_first=1;
|
|
|
if ((int) (*(char *) &lsb_first) != 0)
|
|
|
MSBOrderLong((unsigned char *) &header,sz_XWDheader);
|
|
|
/*
|
|
|
Check to see if the dump file is in the proper format.
|
|
|
*/
|
|
|
if (header.file_version != XWD_FILE_VERSION)
|
|
|
ThrowReaderException(CorruptImageError,"FileFormatVersionMismatch");
|
|
|
if (header.header_size < sz_XWDheader)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
if (header.xoffset >= header.pixmap_width)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
switch (header.visual_class)
|
|
|
{
|
|
|
case StaticGray:
|
|
|
case GrayScale:
|
|
|
{
|
|
|
if (header.bits_per_pixel != 1)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
break;
|
|
|
}
|
|
|
case StaticColor:
|
|
|
case PseudoColor:
|
|
|
{
|
|
|
if ((header.bits_per_pixel < 1) || (header.bits_per_pixel > 15) ||
|
|
|
(header.colormap_entries == 0))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
break;
|
|
|
}
|
|
|
case TrueColor:
|
|
|
case DirectColor:
|
|
|
{
|
|
|
if ((header.bits_per_pixel != 16) && (header.bits_per_pixel != 24) &&
|
|
|
(header.bits_per_pixel != 32))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
switch (header.pixmap_format)
|
|
|
{
|
|
|
case XYBitmap:
|
|
|
{
|
|
|
if (header.pixmap_depth != 1)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
break;
|
|
|
}
|
|
|
case XYPixmap:
|
|
|
case ZPixmap:
|
|
|
{
|
|
|
if ((header.pixmap_depth < 1) || (header.pixmap_depth > 32))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
switch (header.bitmap_pad)
|
|
|
{
|
|
|
case 8:
|
|
|
case 16:
|
|
|
case 32:
|
|
|
break;
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
switch (header.bitmap_unit)
|
|
|
{
|
|
|
case 8:
|
|
|
case 16:
|
|
|
case 32:
|
|
|
break;
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
switch (header.byte_order)
|
|
|
{
|
|
|
case LSBFirst:
|
|
|
case MSBFirst:
|
|
|
break;
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
switch (header.bitmap_bit_order)
|
|
|
{
|
|
|
case LSBFirst:
|
|
|
case MSBFirst:
|
|
|
break;
|
|
|
default:
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
if (((header.bitmap_pad % 8) != 0) || (header.bitmap_pad > 32))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
length=(size_t) (header.header_size-sz_XWDheader);
|
|
|
comment=(char *) AcquireQuantumMemory(length+1,sizeof(*comment));
|
|
|
if (comment == (char *) NULL)
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
count=ReadBlob(image,length,(unsigned char *) comment);
|
|
|
comment[length]='\0';
|
|
|
(void) SetImageProperty(image,"comment",comment,exception);
|
|
|
comment=DestroyString(comment);
|
|
|
if (count != (ssize_t) length)
|
|
|
ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
/*
|
|
|
Initialize the X image.
|
|
|
*/
|
|
|
ximage=(XImage *) AcquireMagickMemory(sizeof(*ximage));
|
|
|
if (ximage == (XImage *) NULL)
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
ximage->depth=(int) header.pixmap_depth;
|
|
|
ximage->format=(int) header.pixmap_format;
|
|
|
ximage->xoffset=(int) header.xoffset;
|
|
|
ximage->data=(char *) NULL;
|
|
|
ximage->width=(int) header.pixmap_width;
|
|
|
ximage->height=(int) header.pixmap_height;
|
|
|
ximage->bitmap_pad=(int) header.bitmap_pad;
|
|
|
ximage->bytes_per_line=(int) header.bytes_per_line;
|
|
|
ximage->byte_order=(int) header.byte_order;
|
|
|
ximage->bitmap_unit=(int) header.bitmap_unit;
|
|
|
ximage->bitmap_bit_order=(int) header.bitmap_bit_order;
|
|
|
ximage->bits_per_pixel=(int) header.bits_per_pixel;
|
|
|
ximage->red_mask=header.red_mask;
|
|
|
ximage->green_mask=header.green_mask;
|
|
|
ximage->blue_mask=header.blue_mask;
|
|
|
if ((ximage->depth < 0) || (ximage->format < 0) || (ximage->xoffset < 0) ||
|
|
|
(ximage->width < 0) || (ximage->height < 0) || (ximage->bitmap_pad < 0) ||
|
|
|
(ximage->bytes_per_line < 0) || (ximage->byte_order < 0) ||
|
|
|
(ximage->bitmap_unit < 0) || (ximage->bitmap_bit_order < 0) ||
|
|
|
(ximage->bits_per_pixel < 0))
|
|
|
{
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
if ((ximage->width > 65535) || (ximage->height > 65535))
|
|
|
{
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
if ((ximage->bits_per_pixel > 32) || (ximage->bitmap_unit > 32))
|
|
|
{
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
x_status=XInitImage(ximage);
|
|
|
if (x_status == 0)
|
|
|
{
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
/*
|
|
|
Read colormap.
|
|
|
*/
|
|
|
authentic_colormap=MagickFalse;
|
|
|
colors=(XColor *) NULL;
|
|
|
if (header.ncolors != 0)
|
|
|
{
|
|
|
XWDColor
|
|
|
color;
|
|
|
|
|
|
length=(size_t) header.ncolors;
|
|
|
if (length > ((~0UL)/sizeof(*colors)))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
colors=(XColor *) AcquireQuantumMemory(length,sizeof(*colors));
|
|
|
if (colors == (XColor *) NULL)
|
|
|
{
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
}
|
|
|
for (i=0; i < (ssize_t) header.ncolors; i++)
|
|
|
{
|
|
|
count=ReadBlob(image,sz_XWDColor,(unsigned char *) &color);
|
|
|
if (count != sz_XWDColor)
|
|
|
{
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
colors[i].pixel=color.pixel;
|
|
|
colors[i].red=color.red;
|
|
|
colors[i].green=color.green;
|
|
|
colors[i].blue=color.blue;
|
|
|
colors[i].flags=(char) color.flags;
|
|
|
if (color.flags != 0)
|
|
|
authentic_colormap=MagickTrue;
|
|
|
}
|
|
|
/*
|
|
|
Ensure the header byte-order is most-significant byte first.
|
|
|
*/
|
|
|
lsb_first=1;
|
|
|
if ((int) (*(char *) &lsb_first) != 0)
|
|
|
for (i=0; i < (ssize_t) header.ncolors; i++)
|
|
|
{
|
|
|
MSBOrderLong((unsigned char *) &colors[i].pixel,
|
|
|
sizeof(colors[i].pixel));
|
|
|
MSBOrderShort((unsigned char *) &colors[i].red,3*
|
|
|
sizeof(colors[i].red));
|
|
|
}
|
|
|
}
|
|
|
/*
|
|
|
Allocate the pixel buffer.
|
|
|
*/
|
|
|
length=(size_t) ximage->bytes_per_line*ximage->height;
|
|
|
if (CheckOverflowException(length,ximage->bytes_per_line,ximage->height))
|
|
|
{
|
|
|
if (header.ncolors != 0)
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
if (ximage->format != ZPixmap)
|
|
|
{
|
|
|
size_t
|
|
|
extent;
|
|
|
|
|
|
extent=length;
|
|
|
length*=ximage->depth;
|
|
|
if (CheckOverflowException(length,extent,ximage->depth))
|
|
|
{
|
|
|
if (header.ncolors != 0)
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
}
|
|
|
}
|
|
|
ximage->data=(char *) AcquireQuantumMemory(length,sizeof(*ximage->data));
|
|
|
if (ximage->data == (char *) NULL)
|
|
|
{
|
|
|
if (header.ncolors != 0)
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
}
|
|
|
count=ReadBlob(image,length,(unsigned char *) ximage->data);
|
|
|
if (count != (ssize_t) length)
|
|
|
{
|
|
|
if (header.ncolors != 0)
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage->data=DestroyString(ximage->data);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
}
|
|
|
/*
|
|
|
Convert image to MIFF format.
|
|
|
*/
|
|
|
image->columns=(size_t) ximage->width;
|
|
|
image->rows=(size_t) ximage->height;
|
|
|
image->depth=8;
|
|
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
if (header.ncolors != 0)
|
|
|
colors=(XColor *) RelinquishMagickMemory(colors);
|
|
|
ximage->data=DestroyString(ximage->data);
|
|
|
ximage=(XImage *) RelinquishMagickMemory(ximage);
|
|
|
return(DestroyImageList(image));
|
|
|
}
|
|
|
if ((header.ncolors == 0U) || (ximage->red_mask != 0) ||
|
|
|
(ximage->green_mask != 0) || (ximage->blue_mask != 0))
|
|
|
image->storage_class=DirectClass;
|
|
|
else
|
|
|
image->storage_class=PseudoClass;
|
|
|
image->colors=header.ncolors;
|
|
|
if (image_info->ping == MagickFalse)
|
|
|
switch (image->storage_class)
|
|
|
{
|
|
|
case DirectClass:
|
|
|
default:
|
|
|
{
|
|
|
size_t
|
|
|
color;
|
|
|
|
|
|
size_t
|
|
|
blue_mask,
|
|
|
blue_shift,
|
|
|
green_mask,
|
|
|
green_shift,
|
|
|
red_mask,
|
|
|
red_shift;
|
|
|
|
|
|
/*
|
|
|
Determine shift and mask for red, green, and blue.
|
|
|
*/
|
|
|
red_mask=ximage->red_mask;
|
|
|
red_shift=0;
|
|
|
while ((red_mask != 0) && ((red_mask & 0x01) == 0))
|
|
|
{
|
|
|
red_mask>>=1;
|
|
|
red_shift++;
|
|
|
}
|
|
|
green_mask=ximage->green_mask;
|
|
|
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 == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
pixel=XGetPixel(ximage,(int) x,(int) y);
|
|
|
index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
|
|
red_shift) & red_mask,exception);
|
|
|
SetPixelRed(image,ScaleShortToQuantum(
|
|
|
colors[(ssize_t) index].red),q);
|
|
|
index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
|
|
green_shift) & green_mask,exception);
|
|
|
SetPixelGreen(image,ScaleShortToQuantum(
|
|
|
colors[(ssize_t) index].green),q);
|
|
|
index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >>
|
|
|
blue_shift) & blue_mask,exception);
|
|
|
SetPixelBlue(image,ScaleShortToQuantum(
|
|
|
colors[(ssize_t) index].blue),q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
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 == (Quantum *) 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(image,ScaleShortToQuantum((unsigned short) color),q);
|
|
|
color=(pixel >> green_shift) & green_mask;
|
|
|
if (green_mask != 0)
|
|
|
color=(color*65535UL)/green_mask;
|
|
|
SetPixelGreen(image,ScaleShortToQuantum((unsigned short) color),
|
|
|
q);
|
|
|
color=(pixel >> blue_shift) & blue_mask;
|
|
|
if (blue_mask != 0)
|
|
|
color=(color*65535UL)/blue_mask;
|
|
|
SetPixelBlue(image,ScaleShortToQuantum((unsigned short) color),q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
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,exception) == 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=(MagickRealType) ScaleShortToQuantum(
|
|
|
colors[i].red);
|
|
|
image->colormap[i].green=(MagickRealType) ScaleShortToQuantum(
|
|
|
colors[i].green);
|
|
|
image->colormap[i].blue=(MagickRealType) ScaleShortToQuantum(
|
|
|
colors[i].blue);
|
|
|
}
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
index=(Quantum) ConstrainColormapIndex(image,(ssize_t)
|
|
|
XGetPixel(ximage,(int) x,(int) y),exception);
|
|
|
SetPixelIndex(image,index,q);
|
|
|
SetPixelViaPixelInfo(image,image->colormap+(ssize_t) index,q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
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=AcquireMagickInfo("XWD","XWD","X Windows system window dump (color)");
|
|
|
#if defined(MAGICKCORE_X11_DELEGATE)
|
|
|
entry->decoder=(DecodeImageHandler *) ReadXWDImage;
|
|
|
entry->encoder=(EncodeImageHandler *) WriteXWDImage;
|
|
|
#endif
|
|
|
entry->magick=(IsImageFormatHandler *) IsXWD;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(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,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image_info: the image info.
|
|
|
%
|
|
|
% o image: The image.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType WriteXWDImage(const ImageInfo *image_info,Image *image,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
const char
|
|
|
*value;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
const Quantum
|
|
|
*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);
|
|
|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
status=OpenBlob(image_info,image,WriteBinaryBlobMode,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,exception);
|
|
|
(void) TransformImageColorspace(image,sRGBColorspace,exception);
|
|
|
/*
|
|
|
Initialize XWD file header.
|
|
|
*/
|
|
|
(void) memset(&xwd_info,0,sizeof(xwd_info));
|
|
|
xwd_info.header_size=(CARD32) sz_XWDheader;
|
|
|
value=GetImageProperty(image,"comment",exception);
|
|
|
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(ClampToQuantum(
|
|
|
image->colormap[i].red));
|
|
|
colors[i].green=ScaleQuantumToShort(ClampToQuantum(
|
|
|
image->colormap[i].green));
|
|
|
colors[i].blue=ScaleQuantumToShort(ClampToQuantum(
|
|
|
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,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
break;
|
|
|
q=pixels;
|
|
|
if (image->storage_class == PseudoClass)
|
|
|
{
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
*q++=(unsigned char) ((ssize_t) GetPixelIndex(image,p));
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
*q++=ScaleQuantumToChar(GetPixelRed(image,p));
|
|
|
*q++=ScaleQuantumToChar(GetPixelGreen(image,p));
|
|
|
*q++=ScaleQuantumToChar(GetPixelBlue(image,p));
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
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
|
