1 /*-
2 * Copyright (c) 1995-1998 Søren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD$
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 char color8[] = {FG_BLUE, FG_BROWN,
62 FG_LIGHTGREY, FG_CYAN};
63 static char *colors;
64 static u_short stars[NUM_STARS][2];
65
66 sc = sc_find_softc(adp, NULL);
67 if (sc == NULL)
68 return EAGAIN;
69 scp = sc->cur_scp;
70
71 if (blank) {
72 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
73 return EAGAIN;
74 if (!blanked) {
75 switch (adp->va_mode) {
76 case M_PC98_80x25:
77 case M_PC98_80x30:
78 colors = color8;
79 break;
80 default:
81 colors = color16;
82 break;
83 }
84
85 /* clear the screen and set the border color */
86 sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
87 (FG_LIGHTGREY | BG_BLACK) << 8);
88 vidd_set_hw_cursor(adp, -1, -1);
89 sc_set_border(scp, 0);
90 blanked = TRUE;
91 for(i=0; i<NUM_STARS; i++) {
92 stars[i][0] =
93 random() % (scp->xsize*scp->ysize);
94 stars[i][1] = 0;
95 }
96 }
97 cell = random() % NUM_STARS;
98 sc_vtb_putc(&scp->scr, stars[cell][0],
99 sc->scr_map[pattern[stars[cell][1]]],
100 colors[random()%sizeof(color16)] << 8);
101 if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
102 stars[cell][0] = random() % (scp->xsize*scp->ysize);
103 stars[cell][1] = 0;
104 }
105 } else
106 blanked = FALSE;
107
108 return 0;
109 }
110
111 static int
star_init(video_adapter_t * adp)112 star_init(video_adapter_t *adp)
113 {
114 blanked = FALSE;
115 return 0;
116 }
117
118 static int
star_term(video_adapter_t * adp)119 star_term(video_adapter_t *adp)
120 {
121 return 0;
122 }
123
124 static scrn_saver_t star_module = {
125 "star_saver", star_init, star_term, star_saver, NULL,
126 };
127
128 SAVER_MODULE(star_saver, star_module);
129