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- /* Copyright (C) 1989, 1993 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gxbitmap.h */
- /* Definitions for stored bitmaps for Ghostscript */
-
- #ifndef gxbitmap_INCLUDED
- # define gxbitmap_INCLUDED
-
- /*
- * Drivers such as the X driver and the command list (band list) driver
- * benefit greatly by being able to cache bitmaps (tiles and characters)
- * and refer to them later. To support this, we define a bitmap ID type
- * which the kernel passes to the driver on each copy_ or tile_ operation.
- */
- typedef unsigned long gx_bitmap_id;
- #define gx_no_bitmap_id 0L
-
- /*
- * Structure for describing stored bitmaps.
- * Bitmaps are stored bit-big-endian (i.e., the 2^7 bit of the first
- * byte corresponds to x=0), as a sequence of bytes (i.e., you can't
- * do word-oriented operations on them if you're on a little-endian
- * platform like the Intel 80x86 or VAX). Each scan line must start on
- * a `word' (long) boundary, and hence is padded to a word boundary,
- * although this should rarely be of concern, since the raster and width
- * are specified individually. The first scan line corresponds to y=0
- * in whatever coordinate system is relevant.
- */
- /* We assume sizeof(long) is 4, 8, or 16 (?). */
- #define align_bitmap_mod arch_sizeof_long
- #define log2_align_bitmap_mod\
- (align_bitmap_mod == 4 ? 2 : align_bitmap_mod == 8 ? 3 : 4)
- /*
- * For bitmaps used as halftone tiles, we may replicate the tile in
- * X and/or Y, but it is still valuable to know the true tile dimensions.
- */
- typedef struct gx_bitmap_s {
- byte *data;
- int raster; /* bytes per scan line */
- gs_int_point size; /* width, height */
- gx_bitmap_id id;
- ushort rep_width, rep_height; /* true size of tile */
- } gx_bitmap;
-
- #endif /* gxbitmap_INCLUDED */
-