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
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/consio.h>
36#include <sys/fbio.h>
37
38#include <machine/pc/display.h>
39
40#include <dev/fb/fbreg.h>
41#include <dev/fb/splashreg.h>
42#include <dev/syscons/syscons.h>
43
44#define NUM_STARS	50
45
46static int blanked;
47
48/*
49 * Alternate saver that got its inspiration from a well known utility
50 * package for an inferior^H^H^H^H^H^Hfamous OS.
51 */
52static int
53star_saver(video_adapter_t *adp, int blank)
54{
55	sc_softc_t	*sc;
56	scr_stat	*scp;
57	int		cell, i;
58	static u_char	pattern[] = {"...........++++***   "};
59	static char	color16[] = {FG_DARKGREY, FG_LIGHTGREY,
60				     FG_WHITE, FG_LIGHTCYAN};
61	static u_short 	stars[NUM_STARS][2];
62
63	sc = sc_find_softc(adp, NULL);
64	if (sc == NULL)
65		return EAGAIN;
66	scp = sc->cur_scp;
67
68	if (blank) {
69		if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
70			return EAGAIN;
71		if (!blanked) {
72			/* clear the screen and set the border color */
73			sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
74				     (FG_LIGHTGREY | BG_BLACK) << 8);
75			vidd_set_hw_cursor(adp, -1, -1);
76			sc_set_border(scp, 0);
77			blanked = TRUE;
78			for(i=0; i<NUM_STARS; i++) {
79				stars[i][0] =
80					random() % (scp->xsize*scp->ysize);
81				stars[i][1] = 0;
82			}
83		}
84		cell = random() % NUM_STARS;
85		sc_vtb_putc(&scp->scr, stars[cell][0],
86			    sc->scr_map[pattern[stars[cell][1]]],
87			    color16[random()%sizeof(color16)] << 8);
88		if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
89			stars[cell][0] = random() % (scp->xsize*scp->ysize);
90			stars[cell][1] = 0;
91		}
92	} else
93		blanked = FALSE;
94
95	return 0;
96}
97
98static int
99star_init(video_adapter_t *adp)
100{
101	blanked = FALSE;
102	return 0;
103}
104
105static int
106star_term(video_adapter_t *adp)
107{
108	return 0;
109}
110
111static scrn_saver_t star_module = {
112	"star_saver", star_init, star_term, star_saver, NULL,
113};
114
115SAVER_MODULE(star_saver, star_module);
116