sys/dev/misc/syscons/bsdlogo/logo_saver.c

   1 /*-
   2  * Copyright (c) 1998 Dag-Erling Coïdan Smørgrav
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer
  10  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/modules/syscons/logo/logo_saver.c,v 1.8 1999/08/28 00:47:51 peter Exp $
  29  * $DragonFly: src/sys/dev/misc/syscons/bsdlogo/Attic/logo_saver.c,v 1.4 2005/06/11 00:26:46 dillon Exp $
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/kernel.h>
  35 #include <sys/module.h>
  36 #include <sys/syslog.h>
  37 #include <sys/consio.h>
  38 #include <sys/fbio.h>
  39 #include <sys/thread2.h>
  40
  41 #include <dev/video/fb/fbreg.h>
  42 #include <dev/video/fb/splashreg.h>
  43 #include "../syscons.h"
  44
  45 static u_char *vid;
  46 static int banksize, scrmode, bpsl, scrw, scrh;
  47 static int blanked;
  48
  49 #include "logo.c"
  50
  51 static void
  52 logo_blit(video_adapter_t *adp, int x, int y)
  53 {
  54     int d, l, o, p;
  55
  56     for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
  57         o += banksize;
  58     set_origin(adp, o);
  59
  60     for (d = 0; d < sizeof logo_img; d += logo_w) {
  61         if (p + logo_w < banksize) {
  62             bcopy(logo_img + d, vid + p, logo_w);
  63             p += bpsl;
  64         } else if (p < banksize) {
  65             l = banksize - p;
  66             bcopy(logo_img + d, vid + p, l);
  67             set_origin(adp, (o += banksize));
  68             bcopy(logo_img + d + l, vid, logo_w - l);
  69             p += bpsl - banksize;
  70         } else {
  71             p -= banksize;
  72             set_origin(adp, (o += banksize));
  73             bcopy(logo_img + d, vid + p, logo_w);
  74             p += bpsl;
  75         }
  76     }
  77 }
  78
  79 static void
  80 logo_update(video_adapter_t *adp)
  81 {
  82     static int xpos = 0, ypos = 0;
  83     static int xinc = 1, yinc = 1;
  84
  85     /* Turn when you hit the edge */
  86     if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
  87         xinc = -xinc;
  88     if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
  89         yinc = -yinc;
  90     xpos += xinc;
  91     ypos += yinc;
  92
  93     /* XXX Relies on margin around logo to erase trail */
  94     logo_blit(adp, xpos, ypos);
  95 }
  96
  97 static int
  98 logo_saver(video_adapter_t *adp, int blank)
  99 {
 100     int i;
 101
 102     if (blank) {
 103         /* switch to graphics mode */
 104         if (blanked <= 0) {
 105             crit_enter();
 106             set_video_mode(adp, scrmode);
 107             load_palette(adp, logo_pal);
 108 #if 0 /* XXX conflict */
 109             set_border(adp, 0);
 110 #endif
 111             blanked++;
 112             vid = (u_char *)adp->va_window;
 113             banksize = adp->va_window_size;
 114             bpsl = adp->va_line_width;
 115             crit_exit();
 116             for (i = 0; i < bpsl*scrh; i += banksize) {
 117                 set_origin(adp, i);
 118                 bzero(vid, banksize);
 119             }
 120         }
 121         logo_update(adp);
 122     } else {
 123         blanked = 0;
 124     }
 125     return 0;
 126 }
 127
 128 static int
 129 logo_init(video_adapter_t *adp)
 130 {
 131     video_info_t info;
 132
 133     if (!get_mode_info(adp, M_VESA_CG800x600, &info)) {
 134         scrmode = M_VESA_CG800x600;
 135     } else if (!get_mode_info(adp, M_VGA_CG320, &info)) {
 136         scrmode = M_VGA_CG320;
 137     } else {
 138         log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n");
 139         return ENODEV;
 140     }
 141
 142     scrw = info.vi_width;
 143     scrh = info.vi_height;
 144     blanked = 0;
 145
 146     return 0;
 147 }
 148
 149 static int
 150 logo_term(video_adapter_t *adp)
 151 {
 152     return 0;
 153 }
 154
 155 static scrn_saver_t logo_module = {
 156     "logo_saver", logo_init, logo_term, logo_saver, NULL,
 157 };
 158
 159 SAVER_MODULE(logo_saver, logo_module);