160 lines
4.4 KiB
C
160 lines
4.4 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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* $Id$
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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 <machine/md_var.h>
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#include <saver.h>
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static u_char *vid;
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static int banksize;
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static u_char save_pal[768];
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#define SCRW 800
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#define SCRH 600
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#include "logo.c"
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#define set_origin(scp, o) (*biosvidsw.set_win_org)((scp)->adp, o)
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static void
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logo_blit(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 * SCRW + x; p > banksize; p -= banksize)
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o += banksize;
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set_origin(cur_console, 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 += SCRW;
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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(cur_console, (o += banksize));
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bcopy(logo_img + d + l, vid, logo_w - l);
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p += SCRW - banksize;
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} else {
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p -= banksize;
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set_origin(cur_console, (o += banksize));
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bcopy(logo_img + d, vid + p, logo_w);
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p += SCRW;
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}
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}
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}
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static void
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logo_update(void)
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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)) xinc = -xinc;
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if ((ypos + logo_h + yinc > SCRH) || (ypos + yinc < 0)) yinc = -yinc;
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xpos += xinc; ypos += yinc;
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/* XXX Relies on margin around logo to erase trail */
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logo_blit(xpos, ypos);
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}
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static void
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logo_saver(int blank)
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{
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scr_stat *scp = cur_console;
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static int saved_mode;
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int pl;
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if (blank) {
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/* switch to graphics mode */
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if (scrn_blanked <= 0) {
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pl = splhigh();
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saved_mode = scp->mode;
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scp->mode = M_VESA_CG800x600;
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scp->status |= SAVER_RUNNING|GRAPHICS_MODE;
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save_palette(scp, (char *)save_pal);
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set_mode(scp);
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load_palette(scp, (char *)logo_pal);
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scrn_blanked++;
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vid = (u_char *)Crtat;
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splx(pl);
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/* XXX should clear all banks */
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}
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logo_update();
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} else {
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/* return to previous video mode */
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if (scrn_blanked > 0) {
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if (saved_mode) {
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pl = splhigh();
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scrn_blanked = 0;
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scp->mode = saved_mode;
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scp->status &= ~(SAVER_RUNNING|GRAPHICS_MODE);
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set_mode(scp);
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load_palette(scp, (char *)save_pal);
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saved_mode = 0;
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splx(pl);
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}
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}
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}
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}
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static int
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logo_saver_load(void)
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{
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video_info_t info;
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/* check that the console is capable of running in 800x600x256 */
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if ((*biosvidsw.get_info)(cur_console->adp, M_VESA_CG800x600, &info)) {
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log(LOG_NOTICE, "logo_saver: the console does not support M_VESA_CG800x600\n");
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return ENODEV;
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}
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/* is it possible for window_size not to be a multiple of window_gran? */
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while (banksize + info.vi_window_gran <= info.vi_window_size)
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banksize += info.vi_window_gran;
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return add_scrn_saver(logo_saver);
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}
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static int
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logo_saver_unload(void)
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{
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return remove_scrn_saver(logo_saver);
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}
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SAVER_MODULE(logo_saver);
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