logo_saver.c revision 48104 
1/*-
2 * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav
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 *    in this position and unchanged.
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 *	$Id: logo_saver.c,v 1.6 1999/04/12 13:34:57 des Exp $
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/syslog.h>
36#include <sys/consio.h>
37#include <sys/fbio.h>
38
39#include <dev/fb/fbreg.h>
40#include <dev/fb/splashreg.h>
41#include <dev/syscons/syscons.h>
42
43static u_char *vid;
44static int banksize, scrmode, bpsl, scrw, scrh;
45static int blanked;
46
47#include "logo.c"
48
49static void
50logo_blit(video_adapter_t *adp, int x, int y)
51{
52    int d, l, o, p;
53
54    for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
55	o += banksize;
56    set_origin(adp, o);
57
58    for (d = 0; d < sizeof logo_img; d += logo_w) {
59	if (p + logo_w < banksize) {
60	    bcopy(logo_img + d, vid + p, logo_w);
61	    p += bpsl;
62	} else if (p < banksize) {
63	    l = banksize - p;
64	    bcopy(logo_img + d, vid + p, l);
65	    set_origin(adp, (o += banksize));
66	    bcopy(logo_img + d + l, vid, logo_w - l);
67	    p += bpsl - banksize;
68	} else {
69	    p -= banksize;
70	    set_origin(adp, (o += banksize));
71	    bcopy(logo_img + d, vid + p, logo_w);
72	    p += bpsl;
73	}
74    }
75}
76
77static void
78logo_update(video_adapter_t *adp)
79{
80    static int xpos = 0, ypos = 0;
81    static int xinc = 1, yinc = 1;
82
83    /* Turn when you hit the edge */
84    if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
85	xinc = -xinc;
86    if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
87	yinc = -yinc;
88    xpos += xinc;
89    ypos += yinc;
90
91    /* XXX Relies on margin around logo to erase trail */
92    logo_blit(adp, xpos, ypos);
93}
94
95static int
96logo_saver(video_adapter_t *adp, int blank)
97{
98    int i, pl;
99
100    if (blank) {
101	/* switch to graphics mode */
102	if (blanked <= 0) {
103	    pl = splhigh();
104	    set_video_mode(adp, scrmode);
105	    load_palette(adp, logo_pal);
106#if 0 /* XXX conflict */
107	    set_border(adp, 0);
108#endif
109	    blanked++;
110	    vid = (u_char *)adp->va_window;
111	    banksize = adp->va_window_size;
112	    bpsl = adp->va_line_width;
113	    splx(pl);
114	    for (i = 0; i < bpsl*scrh; i += banksize) {
115		set_origin(adp, i);
116		bzero(vid, banksize);
117	    }
118	}
119	logo_update(adp);
120    } else {
121	blanked = 0;
122    }
123    return 0;
124}
125
126static int
127logo_init(video_adapter_t *adp)
128{
129    video_info_t info;
130
131    if (!get_mode_info(adp, M_VESA_CG800x600, &info)) {
132	scrmode = M_VESA_CG800x600;
133    } else if (!get_mode_info(adp, M_VGA_CG320, &info)) {
134	scrmode = M_VGA_CG320;
135    } else {
136        log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n");
137	return ENODEV;
138    }
139
140    scrw = info.vi_width;
141    scrh = info.vi_height;
142    blanked = 0;
143
144    return 0;
145}
146
147static int
148logo_term(video_adapter_t *adp)
149{
150    return 0;
151}
152
153static scrn_saver_t logo_module = {
154    "logo_saver", logo_init, logo_term, logo_saver, NULL,
155};
156
157SAVER_MODULE(logo_saver, logo_module);
158