/*- * Copyright (c) 1999 Brad Forschinger * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD: src/sys/modules/syscons/fire/fire_saver.c,v 1.6.2.1 2000/05/10 14:01:23 obrien Exp $ * $DragonFly: src/sys/dev/misc/syscons/fire/fire_saver.c,v 1.4 2006/09/03 18:52:27 dillon Exp $ */ /* * brad forschinger, 19990504 * * written with much help from warp_saver.c * */ #include #include #include #include #include #include #include #include #include #include #include #include "../syscons.h" #define X_SIZE 320 #define Y_SIZE 200 static int blanked; static u_char fire_pal[768]; static u_char buf[X_SIZE * (Y_SIZE + 1)]; static u_char *vid; static int fire_saver(video_adapter_t *adp, int blank) { int x, y; if (blank) { if (blanked <= 0) { int red, green, blue; int palette_index; set_video_mode(adp, M_VGA_CG320); /* build and load palette */ red = green = blue = 0; for (palette_index = 0; palette_index < 256; palette_index++) { red++; if (red > 128) green += 2; fire_pal[(palette_index * 3) + 0] = red; fire_pal[(palette_index * 3) + 1] = green; fire_pal[(palette_index * 3) + 2] = blue; } load_palette(adp, fire_pal); blanked++; vid = (u_char *) adp->va_window; } /* make a new bottom line */ for (x = 0, y = Y_SIZE; x < X_SIZE; x++) buf[x + (y * X_SIZE)] = krandom() % 160 + 96; /* fade the flames out */ for (y = 0; y < Y_SIZE; y++) { for (x = 0; x < X_SIZE; x++) { buf[x + (y * X_SIZE)] = (buf[(x + 0) + ((y + 0) * X_SIZE)] + buf[(x - 1) + ((y + 1) * X_SIZE)] + buf[(x + 0) + ((y + 1) * X_SIZE)] + buf[(x + 1) + ((y + 1) * X_SIZE)]) / 4; if (buf[x + (y * X_SIZE)] > 0) buf[x + (y * X_SIZE)]--; } } /* blit our buffer into video ram */ memcpy(vid, buf, X_SIZE * Y_SIZE); } else { blanked = 0; } return 0; } static int fire_initialise(video_adapter_t *adp) { video_info_t info; /* check that the console is capable of running in 320x200x256 */ if (get_mode_info(adp, M_VGA_CG320, &info)) { log(LOG_NOTICE, "fire_saver: the console does not support M_VGA_CG320\n"); return (ENODEV); } blanked = 0; return 0; } static int fire_terminate(video_adapter_t *adp) { return 0; } static scrn_saver_t fire_module = { "fire_saver", fire_initialise, fire_terminate, fire_saver, NULL }; SAVER_MODULE(fire_saver, fire_module);