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/*-
* Copyright (c) 1995-1998 Søren Schmidt
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/consio.h>
#include <sys/fbio.h>
#include <machine/pc/display.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
#ifdef PC98
#include <pc98/pc98/pc98_machdep.h>
#endif
static u_char *message;
static int *messagep;
static int messagelen;
static int blanked;
static int
snake_saver(video_adapter_t *adp, int blank)
{
static int dirx, diry;
int f;
sc_softc_t *sc;
scr_stat *scp;
/* XXX hack for minimal changes. */
#define save message
#define savs messagep
sc = sc_find_softc(adp, NULL);
if (sc == NULL)
return EAGAIN;
scp = sc->cur_scp;
if (blank) {
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return EAGAIN;
if (blanked <= 0) {
#ifdef PC98
if (epson_machine_id == 0x20) {
outb(0x43f, 0x42);
outb(0x0c17, inb(0xc17) & ~0x08);
outb(0x43f, 0x40);
}
#endif /* PC98 */
sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
(FG_LIGHTGREY | BG_BLACK) << 8);
(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
sc_set_border(scp, 0);
dirx = (scp->xpos ? 1 : -1);
diry = (scp->ypos ?
scp->xsize : -scp->xsize);
for (f=0; f< messagelen; f++)
savs[f] = scp->xpos + scp->ypos*scp->xsize;
sc_vtb_putc(&scp->scr, savs[0], sc->scr_map[*save],
(FG_LIGHTGREY | BG_BLACK) << 8);
blanked = 1;
}
if (blanked++ < 4)
return 0;
blanked = 1;
sc_vtb_putc(&scp->scr, savs[messagelen - 1], sc->scr_map[0x20],
(FG_LIGHTGREY | BG_BLACK) << 8);
for (f=messagelen-1; f > 0; f--)
savs[f] = savs[f-1];
f = savs[0];
if ((f % scp->xsize) == 0 ||
(f % scp->xsize) == scp->xsize - 1 ||
(random() % 50) == 0)
dirx = -dirx;
if ((f / scp->xsize) == 0 ||
(f / scp->xsize) == scp->ysize - 1 ||
(random() % 20) == 0)
diry = -diry;
savs[0] += dirx + diry;
for (f=messagelen-1; f>=0; f--)
sc_vtb_putc(&scp->scr, savs[f], sc->scr_map[save[f]],
(FG_LIGHTGREY | BG_BLACK) << 8);
}
else {
#ifdef PC98
if (epson_machine_id == 0x20) {
outb(0x43f, 0x42);
outb(0x0c17, inb(0xc17) | 0x08);
outb(0x43f, 0x40);
}
#endif /* PC98 */
blanked = 0;
}
return 0;
}
static int
snake_init(video_adapter_t *adp)
{
messagelen = strlen(ostype) + 1 + strlen(osrelease);
message = malloc(messagelen + 1, M_DEVBUF, 0);
sprintf(message, "%s %s", ostype, osrelease);
messagep = malloc(messagelen * sizeof *messagep, M_DEVBUF, 0);
return 0;
}
static int
snake_term(video_adapter_t *adp)
{
free(message, M_DEVBUF);
free(messagep, M_DEVBUF);
return 0;
}
static scrn_saver_t snake_module = {
"snake_saver", snake_init, snake_term, snake_saver, NULL,
};
SAVER_MODULE(snake_saver, snake_module);
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