/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- ReadDPSImage
- ReadDPSImage
- RegisterDPSImage
- UnregisterDPSImage
/*
% Copyright (C) 2003, 2004 GraphicsMagick Group
% Copyright (C) 2002 ImageMagick Studio
% Copyright 1991-1999 E. I. du Pont de Nemours and Company
%
% This program is covered by multiple licenses, which are described in
% Copyright.txt. You should have received a copy of Copyright.txt with this
% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% DDDD PPPP SSSSS %
% D D P P SS %
% D D PPPP SSS %
% D D P SS %
% DDDD P SSSSS %
% %
% %
% Read Postscript Using the Display Postscript System. %
% %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/colormap.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/monitor.h"
#include "magick/pixel_cache.h"
#include "magick/utility.h"
#include "magick/xwindow.h"
#if defined(HasDPS)
# include <DPS/dpsXclient.h>
# include <DPS/dpsXpreview.h>
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d D P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadDPSImage reads a Adobe Postscript image file and returns it. It
% allocates the memory necessary for the new Image structure and returns a
% pointer to the new image.
%
% The format of the ReadDPSImage method is:
%
% Image *ReadDPSImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadDPSImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or
% if the image cannot be read.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadDPSImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
const char
*client_name;
Display
*display;
float
pixels_per_point;
Image
*image;
int
sans,
status;
long
x,
y;
Pixmap
pixmap;
register IndexPacket
*indexes;
register long
i;
register PixelPacket
*q;
register unsigned long
pixel;
Screen
*screen;
XColor
*colors;
XImage
*dps_image;
XRectangle
page,
bits_per_pixel;
MagickXResourceInfo
resource_info;
XrmDatabase
resource_database;
XStandardColormap
*map_info;
XVisualInfo
*visual_info;
/*
Open X server connection.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
display=XOpenDisplay(image_info->server_name);
if (display == (Display *) NULL)
{
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed to open X11 display!");
return((Image *) NULL);
}
/*
Set our forgiving error handler.
*/
(void) XSetErrorHandler(MagickXError);
/*
Open image file.
*/
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == False)
{
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"failed to open blob!");
return((Image *) NULL);
}
/*
Get user defaults from X resource database.
*/
client_name=GetClientName();
resource_database=MagickXGetResourceDatabase(display,client_name);
MagickXGetResourceInfo(resource_database,client_name,&resource_info);
/*
Allocate standard colormap.
*/
map_info=XAllocStandardColormap();
visual_info=(XVisualInfo *) NULL;
if (map_info == (XStandardColormap *) NULL)
ThrowReaderException(XServerError,UnableToCreateStandardColormap,
image)
else
{
/*
Initialize visual info.
*/
(void) CloneString(&resource_info.visual_type,"default");
visual_info=MagickXBestVisualInfo(display,map_info,&resource_info);
map_info->colormap=(Colormap) NULL;
}
if ((map_info == (XStandardColormap *) NULL) ||
(visual_info == (XVisualInfo *) NULL))
{
DestroyImage(image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed to initialize visual info!");
return((Image *) NULL);
}
/*
Create a pixmap the appropriate size for the image.
*/
screen=ScreenOfDisplay(display,visual_info->screen);
pixels_per_point=XDPSPixelsPerPoint(screen);
if ((image->x_resolution != 0.0) && (image->y_resolution != 0.0))
pixels_per_point=Min(image->x_resolution,image->y_resolution)/72.0;
status=XDPSCreatePixmapForEPSF((DPSContext) NULL,screen,GetBlobFileHandle(image),
visual_info->depth,pixels_per_point,&pixmap,&bits_per_pixel,&page);
if ((status == dps_status_failure) || (status == dps_status_no_extension))
{
DestroyImage(image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed to create pixmap for image!");
return((Image *) NULL);
}
/*
Rasterize the file into the pixmap.
*/
status=XDPSImageFileIntoDrawable((DPSContext) NULL,screen,pixmap,
GetBlobFileHandle(image),bits_per_pixel.height,visual_info->depth,&page,-page.x,
-page.y,pixels_per_point,True,False,True,&sans);
if (status != dps_status_success)
{
DestroyImage(image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed to rasterize EPS into pixmap!");
return((Image *) NULL);
}
/*
Initialize DPS X image.
*/
dps_image=XGetImage(display,pixmap,0,0,bits_per_pixel.width,
bits_per_pixel.height,AllPlanes,ZPixmap);
(void) XFreePixmap(display,pixmap);
if (dps_image == (XImage *) NULL)
{
DestroyImage(image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed initialize DPS X image!");
return((Image *) NULL);
}
/*
Get the colormap colors.
*/
colors=MagickAllocateMemory(XColor *,
visual_info->colormap_size*sizeof(XColor));
if (colors == (XColor *) NULL)
{
DestroyImage(image);
XDestroyImage(dps_image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed allocate memory for colormap!");
return((Image *) NULL);
}
if ((visual_info->class != DirectColor) &&
(visual_info->class != TrueColor))
for (i=0; i < visual_info->colormap_size; i++)
{
colors[i].pixel=i;
colors[i].pad=0;
}
else
{
unsigned long
blue,
blue_bit,
green,
green_bit,
red,
red_bit;
/*
DirectColor or TrueColor visual.
*/
red=0;
green=0;
blue=0;
red_bit=visual_info->red_mask & (~(visual_info->red_mask)+1);
green_bit=visual_info->green_mask & (~(visual_info->green_mask)+1);
blue_bit=visual_info->blue_mask & (~(visual_info->blue_mask)+1);
for (i=0; i < visual_info->colormap_size; i++)
{
colors[i].pixel=red | green | blue;
colors[i].pad=0;
red+=red_bit;
if (red > visual_info->red_mask)
red=0;
green+=green_bit;
if (green > visual_info->green_mask)
green=0;
blue+=blue_bit;
if (blue > visual_info->blue_mask)
blue=0;
}
}
(void) XQueryColors(display,XDefaultColormap(display,visual_info->screen),
colors,visual_info->colormap_size);
/*
Convert X image to MIFF format.
*/
if ((visual_info->class != TrueColor) &&
(visual_info->class != DirectColor))
image->storage_class=PseudoClass;
image->columns=dps_image->width;
image->rows=dps_image->height;
if (image_info->ping)
{
CloseBlob(image);
return(image);
}
switch (image->storage_class)
{
case DirectClass:
default:
{
register unsigned long
color,
index_val;
unsigned long
blue_mask,
blue_shift,
green_mask,
green_shift,
red_mask,
red_shift;
/*
Determine shift and mask for red, green, and blue.
*/
red_mask=visual_info->red_mask;
red_shift=0;
while ((red_mask & 0x01) == 0)
{
red_mask>>=1;
red_shift++;
}
green_mask=visual_info->green_mask;
green_shift=0;
while ((green_mask & 0x01) == 0)
{
green_mask>>=1;
green_shift++;
}
blue_mask=visual_info->blue_mask;
blue_shift=0;
while ((blue_mask & 0x01) == 0)
{
blue_mask>>=1;
blue_shift++;
}
/*
Convert X image to DirectClass packets.
*/
if ((visual_info->colormap_size > 0) &&
(visual_info->class == DirectColor))
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
pixel=XGetPixel(dps_image,x,y);
index_val=(pixel >> red_shift) & red_mask;
q->red=ScaleShortToQuantum(colors[index_val].red);
index_val=(pixel >> green_shift) & green_mask;
q->green=ScaleShortToQuantum(colors[index_val].green);
index_val=(pixel >> blue_shift) & blue_mask;
q->blue=ScaleShortToQuantum(colors[index_val].blue);
q++;
}
if (!SyncImagePixels(image))
break;
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,exception,
LoadImageText,image->filename,
image->columns,image->rows))
break;
}
else
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
pixel=XGetPixel(dps_image,x,y);
color=(pixel >> red_shift) & red_mask;
q->red=ScaleShortToQuantum((color*65535L)/red_mask);
color=(pixel >> green_shift) & green_mask;
q->green=ScaleShortToQuantum((color*65535L)/green_mask);
color=(pixel >> blue_shift) & blue_mask;
q->blue=ScaleShortToQuantum((color*65535L)/blue_mask);
q++;
}
if (!SyncImagePixels(image))
break;
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,exception,
LoadImageText,image->filename,
image->columns,image->rows))
break;
}
break;
}
case PseudoClass:
{
/*
Create colormap.
*/
if (!AllocateImageColormap(image,visual_info->colormap_size))
{
DestroyImage(image);
MagickFreeMemory(colors);
XDestroyImage(dps_image);
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"failed allocate image colormap!");
return((Image *) NULL);
}
for (i=0; i < (long) image->colors; i++)
{
image->colormap[colors[i].pixel].red=
ScaleShortToQuantum(colors[i].red);
image->colormap[colors[i].pixel].green=
ScaleShortToQuantum(colors[i].green);
image->colormap[colors[i].pixel].blue=
ScaleShortToQuantum(colors[i].blue);
}
/*
Convert X image to PseudoClass packets.
*/
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
indexes=AccessMutableIndexes(image);
for (x=0; x < (long) image->columns; x++)
indexes[x]=(unsigned short) XGetPixel(dps_image,x,y);
if (!SyncImagePixels(image))
break;
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,exception,
LoadImageText,image->filename,
image->columns,image->rows))
break;
}
break;
}
}
MagickFreeMemory(colors);
XDestroyImage(dps_image);
if (image->storage_class == PseudoClass)
(void) SyncImage(image);
/*
Rasterize matte image.
*/
status=XDPSCreatePixmapForEPSF((DPSContext) NULL,screen,GetBlobFileHandle(image),1,
pixels_per_point,&pixmap,&bits_per_pixel,&page);
if ((status != dps_status_failure) && (status != dps_status_no_extension))
{
status=XDPSImageFileIntoDrawable((DPSContext) NULL,screen,pixmap,
GetBlobFileHandle(image),bits_per_pixel.height,1,&page,-page.x,
-page.y,pixels_per_point,True,True,True,&sans);
if (status == dps_status_success)
{
XImage
*matte_image;
/*
Initialize image matte.
*/
matte_image=XGetImage(display,pixmap,0,0,bits_per_pixel.width,
bits_per_pixel.height,AllPlanes,ZPixmap);
(void) XFreePixmap(display,pixmap);
if (matte_image != (XImage *) NULL)
{
image->storage_class=DirectClass;
image->matte=True;
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
q->opacity=OpaqueOpacity;
if (!XGetPixel(matte_image,x,y))
q->opacity=TransparentOpacity;
q++;
}
if (!SyncImagePixels(image))
break;
}
XDestroyImage(matte_image);
}
}
}
/*
Free resources.
*/
MagickXFreeResources(display,visual_info,map_info,(MagickXPixelInfo *) NULL,
(XFontStruct *) NULL,&resource_info,(MagickXWindowInfo *) NULL);
CloseBlob(image);
return(image);
}
#else
static Image *ReadDPSImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
ThrowException(exception,MissingDelegateError,DPSLibraryIsNotAvailable,
image_info->filename);
return((Image *) NULL);
}
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r D P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterDPSImage adds attributes for the Display Postscript image
% format to the list of supported formats. The attributes 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 RegisterDPSImage method is:
%
% RegisterDPSImage(void)
%
*/
ModuleExport void RegisterDPSImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("DPS");
entry->decoder=(DecoderHandler) ReadDPSImage;
entry->blob_support=False;
entry->description="Display Postscript Interpreter";
entry->module="DPS";
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r D P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterDPSImage removes format registrations made by the
% DPS module from the list of supported formats.
%
% The format of the UnregisterDPSImage method is:
%
% UnregisterDPSImage(void)
%
*/
ModuleExport void UnregisterDPSImage(void)
{
(void) UnregisterMagickInfo("DPS");
}