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/* Copyright (C) 1989, 1995, 1998 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gdevsvga.h,v 1.5 2002/06/16 07:25:26 lpd Exp $ */
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/* Common definitions and procedures for SuperVGA drivers */
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/* Requires gdevpcfb.h */
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#ifndef gdevsvga_INCLUDED
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# define gdevsvga_INCLUDED
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/* Common procedures */
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/* See gxdevice.h for the definitions of the procedures. */
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dev_proc_close_device(svga_close);
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dev_proc_map_rgb_color(svga_map_rgb_color);
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dev_proc_map_color_rgb(svga_map_color_rgb);
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dev_proc_fill_rectangle(svga_fill_rectangle);
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dev_proc_copy_mono(svga_copy_mono);
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dev_proc_copy_color(svga_copy_color);
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dev_proc_get_params(svga_get_params);
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dev_proc_put_params(svga_put_params);
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dev_proc_get_bits(svga_get_bits);
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dev_proc_copy_alpha(svga_copy_alpha);
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/* Table structure for looking up graphics modes. */
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typedef struct {
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int width, height; /* "key" */
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int mode; /* "value" */
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} mode_info;
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/* The device descriptor structure */
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typedef struct gx_device_svga_s gx_device_svga;
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struct gx_device_svga_s {
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gx_device_common;
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int (*get_mode) (void);
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void (*set_mode) (int);
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void (*set_page) (gx_device_svga * fbdev, int pnum, int wnum);
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bool fixed_colors; /* if true, used a fixed palette */
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const mode_info *mode; /* BIOS display mode info */
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uint raster; /* frame buffer bytes per line */
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int current_page; /* current page */
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int wnum_read, wnum_write; /* window #s for read vs. write */
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/* Following are device-specific. */
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union {
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struct {
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void (*bios_set_page) (int, int); /* set-page function */
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int pn_shift; /* log2(64K/granularity) */
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} vesa;
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struct {
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int select_reg; /* page-select register */
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} atiw;
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struct {
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int et_model; /* 4 for ET4000, */
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/* 3 for ET3000 */
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} tseng;
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} info;
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};
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/* The initial parameters map an appropriate fraction of */
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/* the screen to a full-page coordinate space. */
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/* This may or may not be what is desired! */
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#define svga_color_device(procs, name, depth, maxv, dither, get_mode, set_mode, set_page) {\
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std_device_color_body(gx_device_svga, &procs, name,\
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640, 480,\
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480 / PAGE_HEIGHT_INCHES, 480 / PAGE_HEIGHT_INCHES,\
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/*dci_color(*/depth, maxv, dither/*)*/),\
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{ 0 }, /* std_procs */\
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get_mode, set_mode, set_page,\
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}
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#define svga_device(procs, name, get_mode, set_mode, set_page)\
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svga_color_device(procs, name, 8, 31, 4, get_mode, set_mode, set_page)
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/* Utility procedures */
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void svga_init_colors(gx_device *);
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int svga_find_mode(gx_device *, const mode_info *);
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int svga_open(gx_device *);
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#endif /* gdevsvga_INCLUDED */
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