1 /*-
2 * (MPSAFE)
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 * $FreeBSD: src/sys/modules/syscons/star/star_saver.c,v 1.23.2.2 2001/05/06 05:44:29 nyan Exp $
31 * $DragonFly: src/sys/dev/misc/syscons/star/star_saver.c,v 1.5 2006/09/03 18:52:28 dillon Exp $
32 */
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/consio.h>
39 #include <sys/fbio.h>
40 #include <sys/thread.h>
41
42 #include <machine/pc/display.h>
43
44 #include <dev/video/fb/fbreg.h>
45 #include <dev/video/fb/splashreg.h>
46 #include "../syscons.h"
47
48 #define NUM_STARS 50
49
50 static int blanked;
51
52 /*
53 * Alternate saver that got its inspiration from a well known utility
54 * package for an inferior^H^H^H^H^H^Hfamous OS.
55 */
56 static int
star_saver(video_adapter_t * adp,int blank)57 star_saver(video_adapter_t *adp, int blank)
58 {
59 sc_softc_t *sc;
60 scr_stat *scp;
61 int cell, i;
62 static u_char pattern[] = {"...........++++*** "};
63 static char colors[] = {FG_DARKGREY, FG_LIGHTGREY,
64 FG_WHITE, FG_LIGHTCYAN};
65 static u_short stars[NUM_STARS][2];
66
67 sc = sc_find_softc(adp, NULL);
68 if (sc == NULL) {
69 return EAGAIN;
70 }
71 scp = sc->cur_scp;
72
73 if (blank) {
74 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
75 return EAGAIN;
76 }
77 if (!blanked) {
78 /* clear the screen and set the border color */
79 sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
80 (FG_LIGHTGREY | BG_BLACK) << 8);
81 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
82 sc_set_border(scp, 0);
83 blanked = TRUE;
84 for(i=0; i<NUM_STARS; i++) {
85 stars[i][0] =
86 krandom() % (scp->xsize*scp->ysize);
87 stars[i][1] = 0;
88 }
89 }
90 cell = krandom() % NUM_STARS;
91 sc_vtb_putc(&scp->scr, stars[cell][0],
92 sc->scr_map[pattern[stars[cell][1]]],
93 colors[krandom()%sizeof(colors)] << 8);
94 if ((stars[cell][1]+=(krandom()%4)) >= sizeof(pattern)-1) {
95 stars[cell][0] = krandom() % (scp->xsize*scp->ysize);
96 stars[cell][1] = 0;
97 }
98 }
99 else
100 blanked = FALSE;
101
102 return 0;
103 }
104
105 static int
star_init(video_adapter_t * adp)106 star_init(video_adapter_t *adp)
107 {
108 blanked = FALSE;
109 return 0;
110 }
111
112 static int
star_term(video_adapter_t * adp)113 star_term(video_adapter_t *adp)
114 {
115 return 0;
116 }
117
118 static scrn_saver_t star_module = {
119 "star_saver", star_init, star_term, star_saver, NULL,
120 };
121
122 SAVER_MODULE(star_saver, star_module);
123