1 /*- 2 * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav 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 * $Id: logo_saver.c,v 1.2 1999/01/01 14:40:49 des Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/syslog.h> 36 37 #include <saver.h> 38 39 static u_char *vid; 40 static int banksize, scrmode, scrw, scrh; 41 static int blanked; 42 43 #include "logo.c" 44 45 #define set_origin(adp, o) (*vidsw[(adp)->va_index]->set_win_org)(adp, o) 46 47 static void 48 logo_blit(video_adapter_t *adp, int x, int y) 49 { 50 int d, l, o, p; 51 52 for (o = 0, p = y * scrw + x; p > banksize; p -= banksize) 53 o += banksize; 54 set_origin(adp, o); 55 56 for (d = 0; d < sizeof logo_img; d += logo_w) { 57 if (p + logo_w < banksize) { 58 bcopy(logo_img + d, vid + p, logo_w); 59 p += scrw; 60 } else if (p < banksize) { 61 l = banksize - p; 62 bcopy(logo_img + d, vid + p, l); 63 set_origin(adp, (o += banksize)); 64 bcopy(logo_img + d + l, vid, logo_w - l); 65 p += scrw - banksize; 66 } else { 67 p -= banksize; 68 set_origin(adp, (o += banksize)); 69 bcopy(logo_img + d, vid + p, logo_w); 70 p += scrw; 71 } 72 } 73 } 74 75 static void 76 logo_update(video_adapter_t *adp) 77 { 78 static int xpos = 0, ypos = 0; 79 static int xinc = 1, yinc = 1; 80 81 /* Turn when you hit the edge */ 82 if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0)) 83 xinc = -xinc; 84 if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0)) 85 yinc = -yinc; 86 xpos += xinc; 87 ypos += yinc; 88 89 /* XXX Relies on margin around logo to erase trail */ 90 logo_blit(adp, xpos, ypos); 91 } 92 93 static int 94 logo_saver(video_adapter_t *adp, int blank) 95 { 96 int i, pl; 97 98 if (blank) { 99 /* switch to graphics mode */ 100 if (blanked <= 0) { 101 pl = splhigh(); 102 set_video_mode(adp, scrmode, logo_pal, 0); 103 blanked++; 104 vid = (u_char *)adp->va_window; 105 splx(pl); 106 for (i = 0; i < scrw*scrh; i += banksize) { 107 set_origin(adp, i); 108 bzero(vid, banksize); 109 } 110 } 111 logo_update(adp); 112 } else { 113 blanked = 0; 114 } 115 return 0; 116 } 117 118 static int 119 logo_init(video_adapter_t *adp) 120 { 121 video_info_t info; 122 123 if (!get_mode_info(adp, M_VESA_CG800x600, &info)) { 124 scrmode = M_VESA_CG800x600; 125 } else if (!get_mode_info(adp, M_VGA_CG320, &info)) { 126 scrmode = M_VGA_CG320; 127 } else { 128 log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n"); 129 return ENODEV; 130 } 131 132 banksize = info.vi_window_size; 133 scrw = info.vi_width; 134 scrh = info.vi_height; 135 blanked = 0; 136 137 return 0; 138 } 139 140 static int 141 logo_term(video_adapter_t *adp) 142 { 143 return 0; 144 } 145 146 static scrn_saver_t logo_module = { 147 "logo_saver", logo_init, logo_term, logo_saver, NULL, 148 }; 149 150 SAVER_MODULE(logo_saver, logo_module); 151