1 /*- 2 * Copyright (c) 1995-1998 S�ren 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 1.5 2006/09/03 18:52:28 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 #define NUM_STARS 50 46 47 static int blanked; 48 49 /* 50 * Alternate saver that got its inspiration from a well known utility 51 * package for an inferior^H^H^H^H^H^Hfamous OS. 52 */ 53 static int 54 star_saver(video_adapter_t *adp, int blank) 55 { 56 sc_softc_t *sc; 57 scr_stat *scp; 58 int cell, i; 59 static u_char pattern[] = {"...........++++*** "}; 60 static char colors[] = {FG_DARKGREY, FG_LIGHTGREY, 61 FG_WHITE, FG_LIGHTCYAN}; 62 static u_short stars[NUM_STARS][2]; 63 64 sc = sc_find_softc(adp, NULL); 65 if (sc == NULL) 66 return EAGAIN; 67 scp = sc->cur_scp; 68 69 if (blank) { 70 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 71 return EAGAIN; 72 if (!blanked) { 73 /* clear the screen and set the border color */ 74 sc_vtb_clear(&scp->scr, sc->scr_map[0x20], 75 (FG_LIGHTGREY | BG_BLACK) << 8); 76 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); 77 sc_set_border(scp, 0); 78 blanked = TRUE; 79 for(i=0; i<NUM_STARS; i++) { 80 stars[i][0] = 81 krandom() % (scp->xsize*scp->ysize); 82 stars[i][1] = 0; 83 } 84 } 85 cell = krandom() % NUM_STARS; 86 sc_vtb_putc(&scp->scr, stars[cell][0], 87 sc->scr_map[pattern[stars[cell][1]]], 88 colors[krandom()%sizeof(colors)] << 8); 89 if ((stars[cell][1]+=(krandom()%4)) >= sizeof(pattern)-1) { 90 stars[cell][0] = krandom() % (scp->xsize*scp->ysize); 91 stars[cell][1] = 0; 92 } 93 } 94 else 95 blanked = FALSE; 96 97 return 0; 98 } 99 100 static int 101 star_init(video_adapter_t *adp) 102 { 103 blanked = FALSE; 104 return 0; 105 } 106 107 static int 108 star_term(video_adapter_t *adp) 109 { 110 return 0; 111 } 112 113 static scrn_saver_t star_module = { 114 "star_saver", star_init, star_term, star_saver, NULL, 115 }; 116 117 SAVER_MODULE(star_saver, star_module); 118