150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 1998 Dag-Erling Coïdan Smørgrav
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $Id: logo_saver.c,v 1.4 1999/01/16 10:20:16 des Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include <saver.h>
|
|
|
|
static u_char *vid;
|
|
static int banksize, scrmode, bpsl, scrw, scrh;
|
|
static int blanked;
|
|
|
|
#include "logo.c"
|
|
|
|
static void
|
|
logo_blit(video_adapter_t *adp, int x, int y)
|
|
{
|
|
int d, l, o, p;
|
|
|
|
for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
|
|
o += banksize;
|
|
set_origin(adp, o);
|
|
|
|
for (d = 0; d < sizeof logo_img; d += logo_w) {
|
|
if (p + logo_w < banksize) {
|
|
bcopy(logo_img + d, vid + p, logo_w);
|
|
p += bpsl;
|
|
} else if (p < banksize) {
|
|
l = banksize - p;
|
|
bcopy(logo_img + d, vid + p, l);
|
|
set_origin(adp, (o += banksize));
|
|
bcopy(logo_img + d + l, vid, logo_w - l);
|
|
p += bpsl - banksize;
|
|
} else {
|
|
p -= banksize;
|
|
set_origin(adp, (o += banksize));
|
|
bcopy(logo_img + d, vid + p, logo_w);
|
|
p += bpsl;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
logo_update(video_adapter_t *adp)
|
|
{
|
|
static int xpos = 0, ypos = 0;
|
|
static int xinc = 1, yinc = 1;
|
|
|
|
/* Turn when you hit the edge */
|
|
if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
|
|
xinc = -xinc;
|
|
if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
|
|
yinc = -yinc;
|
|
xpos += xinc;
|
|
ypos += yinc;
|
|
|
|
/* XXX Relies on margin around logo to erase trail */
|
|
logo_blit(adp, xpos, ypos);
|
|
}
|
|
|
|
static int
|
|
logo_saver(video_adapter_t *adp, int blank)
|
|
{
|
|
int i, pl;
|
|
|
|
if (blank) {
|
|
/* switch to graphics mode */
|
|
if (blanked <= 0) {
|
|
pl = splhigh();
|
|
set_video_mode(adp, scrmode, logo_pal, 0);
|
|
blanked++;
|
|
vid = (u_char *)adp->va_window;
|
|
bpsl = adp->va_line_width;
|
|
splx(pl);
|
|
for (i = 0; i < bpsl*scrh; i += banksize) {
|
|
set_origin(adp, i);
|
|
bzero(vid, banksize);
|
|
}
|
|
}
|
|
logo_update(adp);
|
|
} else {
|
|
blanked = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
logo_init(video_adapter_t *adp)
|
|
{
|
|
video_info_t info;
|
|
|
|
if (!get_mode_info(adp, M_VESA_CG800x600, &info)) {
|
|
scrmode = M_VESA_CG800x600;
|
|
} else if (!get_mode_info(adp, M_VGA_CG320, &info)) {
|
|
scrmode = M_VGA_CG320;
|
|
} else {
|
|
log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n");
|
|
return ENODEV;
|
|
}
|
|
|
|
banksize = info.vi_window_size;
|
|
scrw = info.vi_width;
|
|
scrh = info.vi_height;
|
|
blanked = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
logo_term(video_adapter_t *adp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static scrn_saver_t logo_module = {
|
|
"logo_saver", logo_init, logo_term, logo_saver, NULL,
|
|
};
|
|
|
|
SAVER_MODULE(logo_saver, logo_module);
|