1 /*- 2 * (MPSAFE) 3 * 4 * Copyright (c) 1995-1998 Søren Schmidt 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD: src/sys/modules/syscons/star/star_saver.c,v 1.23.2.2 2001/05/06 05:44:29 nyan Exp $ 31 * $DragonFly: src/sys/dev/misc/syscons/star/star_saver.c,v 1.5 2006/09/03 18:52:28 dillon Exp $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/consio.h> 39 #include <sys/fbio.h> 40 #include <sys/thread.h> 41 42 #include <machine/pc/display.h> 43 44 #include <dev/video/fb/fbreg.h> 45 #include <dev/video/fb/splashreg.h> 46 #include "../syscons.h" 47 48 #define NUM_STARS 50 49 50 static int blanked; 51 52 /* 53 * Alternate saver that got its inspiration from a well known utility 54 * package for an inferior^H^H^H^H^H^Hfamous OS. 55 */ 56 static int 57 star_saver(video_adapter_t *adp, int blank) 58 { 59 sc_softc_t *sc; 60 scr_stat *scp; 61 int cell, i; 62 static u_char pattern[] = {"...........++++*** "}; 63 static char colors[] = {FG_DARKGREY, FG_LIGHTGREY, 64 FG_WHITE, FG_LIGHTCYAN}; 65 static u_short stars[NUM_STARS][2]; 66 67 sc = sc_find_softc(adp, NULL); 68 if (sc == NULL) { 69 return EAGAIN; 70 } 71 scp = sc->cur_scp; 72 73 if (blank) { 74 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) { 75 return EAGAIN; 76 } 77 if (!blanked) { 78 /* clear the screen and set the border color */ 79 sc_vtb_clear(&scp->scr, sc->scr_map[0x20], 80 (FG_LIGHTGREY | BG_BLACK) << 8); 81 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 82 sc_set_border(scp, 0); 83 blanked = TRUE; 84 for(i=0; i<NUM_STARS; i++) { 85 stars[i][0] = 86 krandom() % (scp->xsize*scp->ysize); 87 stars[i][1] = 0; 88 } 89 } 90 cell = krandom() % NUM_STARS; 91 sc_vtb_putc(&scp->scr, stars[cell][0], 92 sc->scr_map[pattern[stars[cell][1]]], 93 colors[krandom()%sizeof(colors)] << 8); 94 if ((stars[cell][1]+=(krandom()%4)) >= sizeof(pattern)-1) { 95 stars[cell][0] = krandom() % (scp->xsize*scp->ysize); 96 stars[cell][1] = 0; 97 } 98 } 99 else 100 blanked = FALSE; 101 102 return 0; 103 } 104 105 static int 106 star_init(video_adapter_t *adp) 107 { 108 blanked = FALSE; 109 return 0; 110 } 111 112 static int 113 star_term(video_adapter_t *adp) 114 { 115 return 0; 116 } 117 118 static scrn_saver_t star_module = { 119 "star_saver", star_init, star_term, star_saver, NULL, 120 }; 121 122 SAVER_MODULE(star_saver, star_module); 123