logo_saver.c revision 50477
1218885Sdim/*- 2218885Sdim * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav 3218885Sdim * All rights reserved. 4218885Sdim * 5218885Sdim * Redistribution and use in source and binary forms, with or without 6218885Sdim * modification, are permitted provided that the following conditions 7218885Sdim * are met: 8218885Sdim * 1. Redistributions of source code must retain the above copyright 9218885Sdim * notice, this list of conditions and the following disclaimer 10218885Sdim * in this position and unchanged. 11218885Sdim * 2. Redistributions in binary form must reproduce the above copyright 12218885Sdim * notice, this list of conditions and the following disclaimer in the 13218885Sdim * documentation and/or other materials provided with the distribution. 14218885Sdim * 3. The name of the author may not be used to endorse or promote products 15218885Sdim * derived from this software without specific prior written permission 16218885Sdim * 17218885Sdim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18218885Sdim * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19218885Sdim * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20218885Sdim * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21218885Sdim * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22234353Sdim * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23218885Sdim * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24234353Sdim * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25218885Sdim * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26239462Sdim * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27234353Sdim * 28234353Sdim * $FreeBSD: head/sys/dev/syscons/logo/logo_saver.c 50477 1999-08-28 01:08:13Z peter $ 29234353Sdim */ 30234353Sdim 31218885Sdim#include <sys/param.h> 32218885Sdim#include <sys/systm.h> 33218885Sdim#include <sys/kernel.h> 34218885Sdim#include <sys/module.h> 35218885Sdim#include <sys/syslog.h> 36218885Sdim#include <sys/consio.h> 37234353Sdim#include <sys/fbio.h> 38226633Sdim 39234353Sdim#include <dev/fb/fbreg.h> 40234353Sdim#include <dev/fb/splashreg.h> 41234353Sdim#include <dev/syscons/syscons.h> 42218885Sdim 43218885Sdimstatic u_char *vid; 44218885Sdimstatic int banksize, scrmode, bpsl, scrw, scrh; 45218885Sdimstatic int blanked; 46218885Sdim 47234353Sdim#include "logo.c" 48218885Sdim 49218885Sdimstatic void 50218885Sdimlogo_blit(video_adapter_t *adp, int x, int y) 51218885Sdim{ 52218885Sdim int d, l, o, p; 53234353Sdim 54218885Sdim for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize) 55218885Sdim o += banksize; 56224145Sdim set_origin(adp, o); 57218885Sdim 58218885Sdim for (d = 0; d < sizeof logo_img; d += logo_w) { 59218885Sdim if (p + logo_w < banksize) { 60218885Sdim bcopy(logo_img + d, vid + p, logo_w); 61234353Sdim p += bpsl; 62234353Sdim } else if (p < banksize) { 63218885Sdim l = banksize - p; 64234353Sdim bcopy(logo_img + d, vid + p, l); 65218885Sdim set_origin(adp, (o += banksize)); 66218885Sdim bcopy(logo_img + d + l, vid, logo_w - l); 67218885Sdim p += bpsl - banksize; 68239462Sdim } else { 69218885Sdim p -= banksize; 70239462Sdim set_origin(adp, (o += banksize)); 71218885Sdim bcopy(logo_img + d, vid + p, logo_w); 72218885Sdim p += bpsl; 73218885Sdim } 74218885Sdim } 75218885Sdim} 76 77static void 78logo_update(video_adapter_t *adp) 79{ 80 static int xpos = 0, ypos = 0; 81 static int xinc = 1, yinc = 1; 82 83 /* Turn when you hit the edge */ 84 if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0)) 85 xinc = -xinc; 86 if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0)) 87 yinc = -yinc; 88 xpos += xinc; 89 ypos += yinc; 90 91 /* XXX Relies on margin around logo to erase trail */ 92 logo_blit(adp, xpos, ypos); 93} 94 95static int 96logo_saver(video_adapter_t *adp, int blank) 97{ 98 int i, pl; 99 100 if (blank) { 101 /* switch to graphics mode */ 102 if (blanked <= 0) { 103 pl = splhigh(); 104 set_video_mode(adp, scrmode); 105 load_palette(adp, logo_pal); 106#if 0 /* XXX conflict */ 107 set_border(adp, 0); 108#endif 109 blanked++; 110 vid = (u_char *)adp->va_window; 111 banksize = adp->va_window_size; 112 bpsl = adp->va_line_width; 113 splx(pl); 114 for (i = 0; i < bpsl*scrh; i += banksize) { 115 set_origin(adp, i); 116 bzero(vid, banksize); 117 } 118 } 119 logo_update(adp); 120 } else { 121 blanked = 0; 122 } 123 return 0; 124} 125 126static int 127logo_init(video_adapter_t *adp) 128{ 129 video_info_t info; 130 131 if (!get_mode_info(adp, M_VESA_CG800x600, &info)) { 132 scrmode = M_VESA_CG800x600; 133 } else if (!get_mode_info(adp, M_VGA_CG320, &info)) { 134 scrmode = M_VGA_CG320; 135 } else { 136 log(LOG_NOTICE, "logo_saver: no suitable graphics mode\n"); 137 return ENODEV; 138 } 139 140 scrw = info.vi_width; 141 scrh = info.vi_height; 142 blanked = 0; 143 144 return 0; 145} 146 147static int 148logo_term(video_adapter_t *adp) 149{ 150 return 0; 151} 152 153static scrn_saver_t logo_module = { 154 "logo_saver", logo_init, logo_term, logo_saver, NULL, 155}; 156 157SAVER_MODULE(logo_saver, logo_module); 158