logo_saver.c revision 117833 
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 * $FreeBSD: head/sys/dev/syscons/logo/logo_saver.c 117833 2003-07-21 13:04:54Z nyan $
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
43#define SAVER_NAME	 "logo_saver"
44
45extern unsigned int	 logo_w;
46extern unsigned int	 logo_h;
47extern unsigned char	 logo_pal[];
48extern unsigned char	 logo_img[];
49extern unsigned int	 logo_img_size;
50
51static u_char		*vid;
52static int		 banksize, scrmode, bpsl, scrw, scrh;
53static int		 blanked;
54
55static void
56logo_blit(video_adapter_t *adp, int x, int y)
57{
58	int d, l, o, p;
59
60	for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
61		o += banksize;
62	set_origin(adp, o);
63
64	for (d = 0; d < logo_img_size; d += logo_w) {
65		if (p + logo_w < banksize) {
66			bcopy(logo_img + d, vid + p, logo_w);
67			p += bpsl;
68		} else if (p < banksize) {
69			l = banksize - p;
70			bcopy(logo_img + d, vid + p, l);
71			set_origin(adp, (o += banksize));
72			bcopy(logo_img + d + l, vid, logo_w - l);
73			p += bpsl - banksize;
74		} else {
75			p -= banksize;
76			set_origin(adp, (o += banksize));
77			bcopy(logo_img + d, vid + p, logo_w);
78			p += bpsl;
79		}
80	}
81}
82
83static void
84logo_update(video_adapter_t *adp)
85{
86	static int xpos = 0, ypos = 0;
87	static int xinc = 1, yinc = 1;
88
89	/* Turn when you hit the edge */
90	if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
91		xinc = -xinc;
92	if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
93		yinc = -yinc;
94	xpos += xinc;
95	ypos += yinc;
96
97	/* XXX Relies on margin around logo to erase trail */
98	logo_blit(adp, xpos, ypos);
99}
100
101static int
102logo_saver(video_adapter_t *adp, int blank)
103{
104	int pl;
105
106	if (blank) {
107		/* switch to graphics mode */
108		if (blanked <= 0) {
109			pl = splhigh();
110			set_video_mode(adp, scrmode);
111			load_palette(adp, logo_pal);
112			set_border(adp, 0);
113			blanked++;
114			vid = (u_char *)adp->va_window;
115			banksize = adp->va_window_size;
116			bpsl = adp->va_line_width;
117			splx(pl);
118			(*vidsw[adp->va_index]->clear)(adp);
119		}
120		logo_update(adp);
121	} else {
122		blanked = 0;
123	}
124	return (0);
125}
126
127static int
128logo_init(video_adapter_t *adp)
129{
130	video_info_t info;
131
132	if (!get_mode_info(adp, M_VESA_CG800x600, &info)) {
133		scrmode = M_VESA_CG800x600;
134	} else if (!get_mode_info(adp, M_VGA_CG320, &info)) {
135		scrmode = M_VGA_CG320;
136	} else if (!get_mode_info(adp, M_PC98_PEGC640x480, &info)) {
137		scrmode = M_PC98_PEGC640x480;
138	} else if (!get_mode_info(adp, M_PC98_PEGC640x400, &info)) {
139		scrmode = M_PC98_PEGC640x400;
140	} else {
141		log(LOG_NOTICE,
142		    "%s: the console does not support M_VGA_CG320\n",
143		    SAVER_NAME);
144		return (ENODEV);
145	}
146
147	scrw = info.vi_width;
148	scrh = info.vi_height;
149
150	return (0);
151}
152
153static int
154logo_term(video_adapter_t *adp)
155{
156	return (0);
157}
158
159static scrn_saver_t logo_module = {
160	SAVER_NAME,
161	logo_init,
162	logo_term,
163	logo_saver,
164	NULL
165};
166
167SAVER_MODULE(logo_saver, logo_module);
168