forked from openkylin/imagemagick
598 lines
20 KiB
C
598 lines
20 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% DDDD PPPP SSSSS %
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% D D P P SS %
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% D D PPPP SSS %
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% D D P SS %
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% DDDD P SSSSS %
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% %
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% %
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% Read Postscript Using the Display Postscript System. %
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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/blob.h"
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#include "magick/blob-private.h"
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#include "magick/client.h"
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#include "magick/colormap.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/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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#include "magick/utility.h"
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#include "magick/xwindow-private.h"
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#if defined(MAGICKCORE_DPS_DELEGATE)
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#include <DPS/dpsXclient.h>
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#include <DPS/dpsXpreview.h>
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#endif
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#if defined(MAGICKCORE_DPS_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 D P S 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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% ReadDPSImage() reads a Adobe Postscript image file and returns it. It
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% allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% The format of the ReadDPSImage method is:
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%
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% Image *ReadDPSImage(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 *ReadDPSImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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const char
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*client_name;
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Display
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*display;
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float
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pixels_per_point;
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Image
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*image;
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int
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sans,
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status;
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Pixmap
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pixmap;
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IndexPacket
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*indexes;
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ssize_t
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i;
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PixelPacket
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*q;
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size_t
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pixel;
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Screen
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*screen;
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ssize_t
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x,
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y;
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XColor
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*colors;
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XImage
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*dps_image;
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XRectangle
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page,
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bits_per_pixel;
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XResourceInfo
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resource_info;
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XrmDatabase
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resource_database;
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XStandardColormap
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*map_info;
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XVisualInfo
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*visual_info;
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/*
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Open X server connection.
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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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display=XOpenDisplay(image_info->server_name);
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if (display == (Display *) NULL)
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return((Image *) NULL);
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/*
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Set our forgiving exception handler.
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*/
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(void) XSetErrorHandler(XError);
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/*
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Open image file.
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*/
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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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Get user defaults from X resource database.
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*/
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client_name=GetClientName();
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resource_database=XGetResourceDatabase(display,client_name);
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XGetResourceInfo(image_info,resource_database,client_name,&resource_info);
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/*
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Allocate standard colormap.
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*/
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map_info=XAllocStandardColormap();
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visual_info=(XVisualInfo *) NULL;
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if (map_info == (XStandardColormap *) NULL)
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ThrowReaderException(ResourceLimitError,"UnableToCreateStandardColormap")
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else
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{
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/*
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Initialize visual info.
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*/
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(void) CloneString(&resource_info.visual_type,"default");
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visual_info=XBestVisualInfo(display,map_info,&resource_info);
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map_info->colormap=(Colormap) NULL;
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}
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if ((map_info == (XStandardColormap *) NULL) ||
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(visual_info == (XVisualInfo *) NULL))
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{
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image=DestroyImage(image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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/*
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Create a pixmap the appropriate size for the image.
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*/
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screen=ScreenOfDisplay(display,visual_info->screen);
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pixels_per_point=XDPSPixelsPerPoint(screen);
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if ((image->x_resolution != 0.0) && (image->y_resolution != 0.0))
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pixels_per_point=MagickMin(image->x_resolution,image->y_resolution)/
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DefaultResolution;
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status=XDPSCreatePixmapForEPSF((DPSContext) NULL,screen,
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GetBlobFileHandle(image),visual_info->depth,pixels_per_point,&pixmap,
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&bits_per_pixel,&page);
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if ((status == dps_status_failure) || (status == dps_status_no_extension))
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{
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image=DestroyImage(image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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/*
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Rasterize the file into the pixmap.
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*/
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status=XDPSImageFileIntoDrawable((DPSContext) NULL,screen,pixmap,
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GetBlobFileHandle(image),(int) bits_per_pixel.height,visual_info->depth,
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&page,-page.x,-page.y,pixels_per_point,MagickTrue,MagickFalse,MagickTrue,
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&sans);
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if (status != dps_status_success)
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{
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image=DestroyImage(image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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/*
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Initialize DPS X image.
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*/
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dps_image=XGetImage(display,pixmap,0,0,bits_per_pixel.width,
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bits_per_pixel.height,AllPlanes,ZPixmap);
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(void) XFreePixmap(display,pixmap);
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if (dps_image == (XImage *) NULL)
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{
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image=DestroyImage(image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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/*
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Get the colormap colors.
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*/
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colors=(XColor *) AcquireQuantumMemory(visual_info->colormap_size,
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sizeof(*colors));
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if (colors == (XColor *) NULL)
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{
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image=DestroyImage(image);
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XDestroyImage(dps_image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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if ((visual_info->klass != DirectColor) && (visual_info->klass != TrueColor))
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for (i=0; i < visual_info->colormap_size; i++)
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{
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colors[i].pixel=(size_t) i;
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colors[i].pad=0;
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}
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else
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{
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size_t
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blue,
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blue_bit,
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green,
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green_bit,
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red,
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red_bit;
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/*
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DirectColor or TrueColor visual.
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*/
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red=0;
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green=0;
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blue=0;
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red_bit=visual_info->red_mask & (~(visual_info->red_mask)+1);
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green_bit=visual_info->green_mask & (~(visual_info->green_mask)+1);
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blue_bit=visual_info->blue_mask & (~(visual_info->blue_mask)+1);
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for (i=0; i < visual_info->colormap_size; i++)
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{
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colors[i].pixel=red | green | blue;
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colors[i].pad=0;
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red+=red_bit;
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if (red > visual_info->red_mask)
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red=0;
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green+=green_bit;
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if (green > visual_info->green_mask)
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green=0;
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blue+=blue_bit;
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if (blue > visual_info->blue_mask)
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blue=0;
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}
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}
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(void) XQueryColors(display,XDefaultColormap(display,visual_info->screen),
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colors,visual_info->colormap_size);
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/*
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Convert X image to MIFF format.
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*/
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if ((visual_info->klass != TrueColor) && (visual_info->klass != DirectColor))
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image->storage_class=PseudoClass;
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image->columns=(size_t) dps_image->width;
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image->rows=(size_t) dps_image->height;
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if (image_info->ping != MagickFalse)
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{
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(void) CloseBlob(image);
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colors=(XColor *) RelinquishMagickMemory(colors);
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XDestroyImage(dps_image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return(GetFirstImageInList(image));
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}
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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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colors=(XColor *) RelinquishMagickMemory(colors);
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XDestroyImage(dps_image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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}
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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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index;
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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=visual_info->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=visual_info->green_mask;
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green_shift=0;
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while ((green_mask != 0) && ((green_mask & 0x01) == 0))
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{
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green_mask>>=1;
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green_shift++;
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}
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blue_mask=visual_info->blue_mask;
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blue_shift=0;
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while ((blue_mask != 0) && ((blue_mask & 0x01) == 0))
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{
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blue_mask>>=1;
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blue_shift++;
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}
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/*
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Convert X image to DirectClass packets.
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*/
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if ((visual_info->colormap_size > 0) &&
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(visual_info->klass == DirectColor))
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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pixel=XGetPixel(dps_image,x,y);
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index=(pixel >> red_shift) & red_mask;
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SetPixelRed(q,ScaleShortToQuantum(colors[index].red));
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index=(pixel >> green_shift) & green_mask;
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SetPixelGreen(q,ScaleShortToQuantum(colors[index].green));
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index=(pixel >> blue_shift) & blue_mask;
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SetPixelBlue(q,ScaleShortToQuantum(colors[index].blue));
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q++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
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break;
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}
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else
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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pixel=XGetPixel(dps_image,x,y);
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color=(pixel >> red_shift) & red_mask;
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color=(color*65535L)/red_mask;
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SetPixelRed(q,ScaleShortToQuantum((unsigned short) color));
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color=(pixel >> green_shift) & green_mask;
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color=(color*65535L)/green_mask;
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SetPixelGreen(q,ScaleShortToQuantum((unsigned short)
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color));
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color=(pixel >> blue_shift) & blue_mask;
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color=(color*65535L)/blue_mask;
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SetPixelBlue(q,ScaleShortToQuantum((unsigned short)
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color));
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q++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
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break;
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}
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break;
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}
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case PseudoClass:
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{
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/*
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Create colormap.
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*/
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if (AcquireImageColormap(image,(size_t) visual_info->colormap_size) == MagickFalse)
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{
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image=DestroyImage(image);
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colors=(XColor *) RelinquishMagickMemory(colors);
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XDestroyImage(dps_image);
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XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
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(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
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return((Image *) NULL);
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}
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for (i=0; i < (ssize_t) image->colors; i++)
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{
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image->colormap[colors[i].pixel].red=ScaleShortToQuantum(colors[i].red);
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image->colormap[colors[i].pixel].green=
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ScaleShortToQuantum(colors[i].green);
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image->colormap[colors[i].pixel].blue=
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ScaleShortToQuantum(colors[i].blue);
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}
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/*
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Convert X image to PseudoClass packets.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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for (x=0; x < (ssize_t) image->columns; x++)
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SetPixelIndex(indexes+x,(unsigned short)
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XGetPixel(dps_image,x,y));
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
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break;
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}
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break;
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}
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}
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colors=(XColor *) RelinquishMagickMemory(colors);
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XDestroyImage(dps_image);
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if (image->storage_class == PseudoClass)
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(void) SyncImage(image);
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/*
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Rasterize matte image.
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*/
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status=XDPSCreatePixmapForEPSF((DPSContext) NULL,screen,
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GetBlobFileHandle(image),1,pixels_per_point,&pixmap,&bits_per_pixel,&page);
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if ((status != dps_status_failure) && (status != dps_status_no_extension))
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{
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status=XDPSImageFileIntoDrawable((DPSContext) NULL,screen,pixmap,
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GetBlobFileHandle(image),(int) bits_per_pixel.height,1,&page,-page.x,
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-page.y,pixels_per_point,MagickTrue,MagickTrue,MagickTrue,&sans);
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if (status == dps_status_success)
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{
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XImage
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*matte_image;
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/*
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Initialize image matte.
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*/
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matte_image=XGetImage(display,pixmap,0,0,bits_per_pixel.width,
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bits_per_pixel.height,AllPlanes,ZPixmap);
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(void) XFreePixmap(display,pixmap);
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if (matte_image != (XImage *) NULL)
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{
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image->storage_class=DirectClass;
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image->matte=MagickTrue;
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelOpacity(q,OpaqueOpacity);
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if (XGetPixel(matte_image,x,y) == 0)
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SetPixelOpacity(q,TransparentOpacity);
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||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
XDestroyImage(matte_image);
|
||
}
|
||
}
|
||
}
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
XFreeResources(display,visual_info,map_info,(XPixelInfo *) NULL,
|
||
(XFontStruct *) NULL,&resource_info,(XWindowInfo *) NULL);
|
||
(void) CloseBlob(image);
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r D P S I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% 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:
|
||
%
|
||
% size_t RegisterDPSImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterDPSImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("DPS");
|
||
#if defined(MAGICKCORE_DPS_DELEGATE)
|
||
entry->decoder=(DecodeImageHandler *) ReadDPSImage;
|
||
#endif
|
||
entry->blob_support=MagickFalse;
|
||
entry->description=ConstantString("Display Postscript Interpreter");
|
||
entry->magick_module=ConstantString("DPS");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r D P S I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% 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");
|
||
}
|