1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1995-1998 S��ren Schmidt
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer,
12 *    without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/consio.h>
38#include <sys/fbio.h>
39
40#include <machine/pc/display.h>
41
42#include <dev/fb/fbreg.h>
43#include <dev/fb/splashreg.h>
44#include <dev/syscons/syscons.h>
45
46#define NUM_STARS	50
47
48static int blanked;
49
50/*
51 * Alternate saver that got its inspiration from a well known utility
52 * package for an inferior^H^H^H^H^H^Hfamous OS.
53 */
54static int
55star_saver(video_adapter_t *adp, int blank)
56{
57	sc_softc_t	*sc;
58	scr_stat	*scp;
59	int		cell, i;
60	static u_char	pattern[] = {"...........++++***   "};
61	static char	color16[] = {FG_DARKGREY, FG_LIGHTGREY,
62				     FG_WHITE, FG_LIGHTCYAN};
63	static u_short 	stars[NUM_STARS][2];
64
65	sc = sc_find_softc(adp, NULL);
66	if (sc == NULL)
67		return EAGAIN;
68	scp = sc->cur_scp;
69
70	if (blank) {
71		if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
72			return EAGAIN;
73		if (!blanked) {
74			/* clear the screen and set the border color */
75			sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
76				     (FG_LIGHTGREY | BG_BLACK) << 8);
77			vidd_set_hw_cursor(adp, -1, -1);
78			sc_set_border(scp, 0);
79			blanked = TRUE;
80			for(i=0; i<NUM_STARS; i++) {
81				stars[i][0] =
82					random() % (scp->xsize*scp->ysize);
83				stars[i][1] = 0;
84			}
85		}
86		cell = random() % NUM_STARS;
87		sc_vtb_putc(&scp->scr, stars[cell][0],
88			    sc->scr_map[pattern[stars[cell][1]]],
89			    color16[random()%sizeof(color16)] << 8);
90		if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
91			stars[cell][0] = random() % (scp->xsize*scp->ysize);
92			stars[cell][1] = 0;
93		}
94	} else
95		blanked = FALSE;
96
97	return 0;
98}
99
100static int
101star_init(video_adapter_t *adp)
102{
103	blanked = FALSE;
104	return 0;
105}
106
107static int
108star_term(video_adapter_t *adp)
109{
110	return 0;
111}
112
113static scrn_saver_t star_module = {
114	"star_saver", star_init, star_term, star_saver, NULL,
115};
116
117SAVER_MODULE(star_saver, star_module);
118