154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
/*-
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* Copyright (c) 1998 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: logo_saver.c,v 1.5 1999/02/05 12:40:15 des Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/syslog.h>
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#include <saver.h>
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static u_char *vid;
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static int banksize, scrmode, bpsl, scrw, scrh;
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static int blanked;
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#include "logo.c"
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static void
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logo_blit(video_adapter_t *adp, int x, int y)
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{
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int d, l, o, p;
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for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
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o += banksize;
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set_origin(adp, o);
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for (d = 0; d < sizeof logo_img; d += logo_w) {
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if (p + logo_w < banksize) {
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bcopy(logo_img + d, vid + p, logo_w);
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p += bpsl;
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} else if (p < banksize) {
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l = banksize - p;
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bcopy(logo_img + d, vid + p, l);
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set_origin(adp, (o += banksize));
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bcopy(logo_img + d + l, vid, logo_w - l);
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p += bpsl - banksize;
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} else {
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p -= banksize;
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set_origin(adp, (o += banksize));
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bcopy(logo_img + d, vid + p, logo_w);
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p += bpsl;
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}
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}
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}
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static void
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logo_update(video_adapter_t *adp)
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{
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static int xpos = 0, ypos = 0;
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static int xinc = 1, yinc = 1;
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/* Turn when you hit the edge */
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if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
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xinc = -xinc;
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if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
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yinc = -yinc;
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xpos += xinc;
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ypos += yinc;
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/* XXX Relies on margin around logo to erase trail */
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logo_blit(adp, xpos, ypos);
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}
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static int
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logo_saver(video_adapter_t *adp, int blank)
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{
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int i, pl;
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if (blank) {
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/* switch to graphics mode */
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if (blanked <= 0) {
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pl = splhigh();
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set_video_mode(adp, scrmode);
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load_palette(adp, logo_pal);
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#if 0 /* XXX conflict */
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set_border(adp, 0);
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#endif
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blanked++;
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vid = (u_char *)adp->va_window;
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bpsl = adp->va_line_width;
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splx(pl);
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for (i = 0; i < bpsl*scrh; i += banksize) {
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set_origin(adp, i);
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bzero(vid, banksize);
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}
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}
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logo_update(adp);
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} else {
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blanked = 0;
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}
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return 0;
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}
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static int
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logo_init(video_adapter_t *adp)
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{
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video_info_t info;
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if (!get_mode_info(adp, M_VESA_CG800x600, &info)) {
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scrmode = M_VESA_CG800x600;
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} else if (!get_mode_info(adp, M_VGA_CG320, &info)) {
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scrmode = M_VGA_CG320;
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} else {
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log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n");
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return ENODEV;
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}
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banksize = info.vi_window_size;
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scrw = info.vi_width;
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scrh = info.vi_height;
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blanked = 0;
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return 0;
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}
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static int
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logo_term(video_adapter_t *adp)
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{
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return 0;
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}
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static scrn_saver_t logo_module = {
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"logo_saver", logo_init, logo_term, logo_saver, NULL,
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};
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SAVER_MODULE(logo_saver, logo_module);
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