diff options
Diffstat (limited to 'sys/dev/syscons/snake')
| -rw-r--r-- | sys/dev/syscons/snake/snake_saver.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/sys/dev/syscons/snake/snake_saver.c b/sys/dev/syscons/snake/snake_saver.c new file mode 100644 index 0000000..093e564 --- /dev/null +++ b/sys/dev/syscons/snake/snake_saver.c @@ -0,0 +1,148 @@ +/*- + * 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> + +static 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); + 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, M_WAITOK); + sprintf(message, "%s %s", ostype, osrelease); + messagep = malloc(messagelen * sizeof *messagep, M_DEVBUF, M_WAITOK); + 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); |
