diff options
Diffstat (limited to 'sys/dev/syscons/warp/warp_saver.c')
| -rw-r--r-- | sys/dev/syscons/warp/warp_saver.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/sys/dev/syscons/warp/warp_saver.c b/sys/dev/syscons/warp/warp_saver.c new file mode 100644 index 000000000000..85a7d29b03cd --- /dev/null +++ b/sys/dev/syscons/warp/warp_saver.c @@ -0,0 +1,167 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/syslog.h> +#include <sys/consio.h> +#include <sys/fbio.h> + +#include <dev/fb/fbreg.h> +#include <dev/fb/splashreg.h> +#include <dev/syscons/syscons.h> + +#define SAVER_NAME "warp_saver" +#define SPP 15 +#define STARS (SPP * (1 + 2 + 4 + 8)) + +#define SET_ORIGIN(adp, o) do { \ + int oo = o; \ + if (oo != last_origin) \ + vidd_set_win_org(adp, last_origin = oo); \ + } while (0) + +static u_char *vid; +static int banksize, scrmode, bpsl, scrw, scrh; +static int blanked; +static int star[STARS]; +static u_char warp_pal[768] = { + 0x00, 0x00, 0x00, + 0x66, 0x66, 0x66, + 0x99, 0x99, 0x99, + 0xcc, 0xcc, 0xcc, + 0xff, 0xff, 0xff + /* the rest is zero-filled by the compiler */ +}; + +static void +warp_update(video_adapter_t *adp) +{ + int i, j, k, n, o, p; + int last_origin = -1; + + for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2) { + for (j = 0; j < n; j++, k++) { + p = (star[k] / scrw) * bpsl + (star[k] % scrw); + o = 0; + while (p > banksize) { + p -= banksize; + o += banksize; + } + SET_ORIGIN(adp, o); + vid[p] = 0; + star[k] += i; + if (star[k] > scrw*scrh) + star[k] -= scrw*scrh; + p = (star[k] / scrw) * bpsl + (star[k] % scrw); + o = 0; + while (p > banksize) { + p -= banksize; + o += banksize; + } + SET_ORIGIN(adp, o); + vid[p] = i; + } + } +} + +static int +warp_saver(video_adapter_t *adp, int blank) +{ + int pl; + + if (blank) { + /* switch to graphics mode */ + if (blanked <= 0) { + pl = splhigh(); + vidd_set_mode(adp, scrmode); + vidd_load_palette(adp, warp_pal); + vidd_set_border(adp, 0); + blanked++; + vid = (u_char *)adp->va_window; + banksize = adp->va_window_size; + bpsl = adp->va_line_width; + splx(pl); + vidd_clear(adp); + } + /* update display */ + warp_update(adp); + } else { + blanked = 0; + } + return (0); +} + +static int +warp_init(video_adapter_t *adp) +{ + video_info_t info; + int i; + + if (!vidd_get_info(adp, M_VGA_CG320, &info)) { + scrmode = M_VGA_CG320; + } else if (!vidd_get_info(adp, M_PC98_PEGC640x480, &info)) { + scrmode = M_PC98_PEGC640x480; + } else if (!vidd_get_info(adp, M_PC98_PEGC640x400, &info)) { + scrmode = M_PC98_PEGC640x400; + } else { + log(LOG_NOTICE, + "%s: the console does not support M_VGA_CG320\n", + SAVER_NAME); + return (ENODEV); + } + + scrw = info.vi_width; + scrh = info.vi_height; + + /* randomize the star field */ + for (i = 0; i < STARS; i++) + star[i] = random() % (scrw * scrh); + + return (0); +} + +static int +warp_term(video_adapter_t *adp) +{ + return (0); +} + +static scrn_saver_t warp_module = { + SAVER_NAME, + warp_init, + warp_term, + warp_saver, + NULL +}; + +SAVER_MODULE(warp_saver, warp_module); |