1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 * $FreeBSD$ 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/consio.h> 38 #include <sys/fbio.h> 39 40 #include <machine/pc/display.h> 41 42 #include <dev/fb/fbreg.h> 43 #include <dev/fb/splashreg.h> 44 #include <dev/syscons/syscons.h> 45 46 #define NUM_STARS 50 47 48 static int blanked; 49 50 /* 51 * Alternate saver that got its inspiration from a well known utility 52 * package for an inferior^H^H^H^H^H^Hfamous OS. 53 */ 54 static int 55 star_saver(video_adapter_t *adp, int blank) 56 { 57 sc_softc_t *sc; 58 scr_stat *scp; 59 int cell, i; 60 static u_char pattern[] = {"...........++++*** "}; 61 static char color16[] = {FG_DARKGREY, FG_LIGHTGREY, 62 FG_WHITE, FG_LIGHTCYAN}; 63 static u_short stars[NUM_STARS][2]; 64 65 sc = sc_find_softc(adp, NULL); 66 if (sc == NULL) 67 return EAGAIN; 68 scp = sc->cur_scp; 69 70 if (blank) { 71 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) 72 return EAGAIN; 73 if (!blanked) { 74 /* clear the screen and set the border color */ 75 sc_vtb_clear(&scp->scr, sc->scr_map[0x20], 76 (FG_LIGHTGREY | BG_BLACK) << 8); 77 vidd_set_hw_cursor(adp, -1, -1); 78 sc_set_border(scp, 0); 79 blanked = TRUE; 80 for(i=0; i<NUM_STARS; i++) { 81 stars[i][0] = 82 random() % (scp->xsize*scp->ysize); 83 stars[i][1] = 0; 84 } 85 } 86 cell = random() % NUM_STARS; 87 sc_vtb_putc(&scp->scr, stars[cell][0], 88 sc->scr_map[pattern[stars[cell][1]]], 89 color16[random()%sizeof(color16)] << 8); 90 if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) { 91 stars[cell][0] = random() % (scp->xsize*scp->ysize); 92 stars[cell][1] = 0; 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