sys/dev/misc/syscons/star/star_saver.c

   1 /*-
   2  * Copyright (c) 1995-1998 Søren Schmidt
   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  *    without modification, immediately at the beginning of the file.
  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/star/star_saver.c,v 1.23.2.2 2001/05/06 05:44:29 nyan Exp $
  29  * $DragonFly: src/sys/dev/misc/syscons/star/star_saver.c,v 1.3 2003/08/15 08:32:30 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/consio.h>
  37 #include <sys/fbio.h>
  38
  39 #include <machine/pc/display.h>
  40
  41 #include <dev/video/fb/fbreg.h>
  42 #include <dev/video/fb/splashreg.h>
  43 #include "../syscons.h"
  44
  45 #ifdef PC98
  46 #include <pc98/pc98/pc98_machdep.h>
  47 #endif
  48
  49 #define NUM_STARS       50
  50
  51 static int blanked;
  52
  53 /*
  54  * Alternate saver that got its inspiration from a well known utility
  55  * package for an inferior^H^H^H^H^H^Hfamous OS.
  56  */
  57 static int
  58 star_saver(video_adapter_t *adp, int blank)
  59 {
  60         sc_softc_t      *sc;
  61         scr_stat        *scp;
  62         int             cell, i;
  63         static u_char   pattern[] = {"...........++++***   "};
  64 #ifndef PC98
  65         static char     colors[] = {FG_DARKGREY, FG_LIGHTGREY,
  66                                     FG_WHITE, FG_LIGHTCYAN};
  67 #else
  68         static char     colors[] = {FG_BLUE, FG_LIGHTGREY,
  69                                     FG_LIGHTGREY, FG_CYAN};
  70 #endif /* PC98 */
  71         static u_short  stars[NUM_STARS][2];
  72
  73         sc = sc_find_softc(adp, NULL);
  74         if (sc == NULL)
  75                 return EAGAIN;
  76         scp = sc->cur_scp;
  77
  78         if (blank) {
  79                 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
  80                         return EAGAIN;
  81                 if (!blanked) {
  82 #ifdef PC98
  83                         if (epson_machine_id == 0x20) {
  84                                 outb(0x43f, 0x42);
  85                                 outb(0x0c17, inb(0xc17) & ~0x08);
  86                                 outb(0x43f, 0x40);
  87                         }
  88 #endif /* PC98 */
  89                         /* clear the screen and set the border color */
  90                         sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
  91                                      (FG_LIGHTGREY | BG_BLACK) << 8);
  92                         (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
  93                         sc_set_border(scp, 0);
  94                         blanked = TRUE;
  95                         for(i=0; i<NUM_STARS; i++) {
  96                                 stars[i][0] =
  97                                         random() % (scp->xsize*scp->ysize);
  98                                 stars[i][1] = 0;
  99                         }
 100                 }
 101                 cell = random() % NUM_STARS;
 102                 sc_vtb_putc(&scp->scr, stars[cell][0],
 103                             sc->scr_map[pattern[stars[cell][1]]],
 104                             colors[random()%sizeof(colors)] << 8);
 105                 if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
 106                         stars[cell][0] = random() % (scp->xsize*scp->ysize);
 107                         stars[cell][1] = 0;
 108                 }
 109         }
 110         else {
 111 #ifdef PC98
 112                 if (epson_machine_id == 0x20) {
 113                         outb(0x43f, 0x42);
 114                         outb(0x0c17, inb(0xc17) | 0x08);
 115                         outb(0x43f, 0x40);
 116                 }
 117 #endif /* PC98 */
 118                 blanked = FALSE;
 119         }
 120         return 0;
 121 }
 122
 123 static int
 124 star_init(video_adapter_t *adp)
 125 {
 126         blanked = FALSE;
 127         return 0;
 128 }
 129
 130 static int
 131 star_term(video_adapter_t *adp)
 132 {
 133         return 0;
 134 }
 135
 136 static scrn_saver_t star_module = {
 137         "star_saver", star_init, star_term, star_saver, NULL,
 138 };
 139
 140 SAVER_MODULE(star_saver, star_module);