1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1995-1998 Søren 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
46 static 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 */
52 static int
star_saver(video_adapter_t * adp,int blank)53 star_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
98 static int
star_init(video_adapter_t * adp)99 star_init(video_adapter_t *adp)
100 {
101 blanked = FALSE;
102 return 0;
103 }
104
105 static int
star_term(video_adapter_t * adp)106 star_term(video_adapter_t *adp)
107 {
108 return 0;
109 }
110
111 static scrn_saver_t star_module = {
112 "star_saver", star_init, star_term, star_saver, NULL,
113 };
114
115 SAVER_MODULE(star_saver, star_module);
116