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fade_saver.c
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Editing: fade_saver.c
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1995-1998 Søren Schmidt * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 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. * * $FreeBSD$ */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/consio.h> #include <sys/fbio.h> #include <dev/fb/fbreg.h> #include <dev/fb/splashreg.h> #include <dev/syscons/syscons.h> static u_char palette[256*3]; static int fade_saver(video_adapter_t *adp, int blank) { static int count = 0; u_char pal[256*3]; int i; if (blank) { if (ISPALAVAIL(adp->va_flags)) { if (count <= 0) vidd_save_palette(adp, palette); if (count < 256) { pal[0] = pal[1] = pal[2] = 0; for (i = 3; i < 256*3; i++) { if (palette[i] - count > 60) pal[i] = palette[i] - count; else pal[i] = 60; } vidd_load_palette(adp, pal); count++; } } else { vidd_blank_display(adp, V_DISPLAY_BLANK); } } else { if (ISPALAVAIL(adp->va_flags)) { vidd_load_palette(adp, palette); count = 0; } else { vidd_blank_display(adp, V_DISPLAY_ON); } } return 0; } static int fade_init(video_adapter_t *adp) { if (!ISPALAVAIL(adp->va_flags) && vidd_blank_display(adp, V_DISPLAY_ON) != 0) return ENODEV; return 0; } static int fade_term(video_adapter_t *adp) { return 0; } static scrn_saver_t fade_module = { "fade_saver", fade_init, fade_term, fade_saver, NULL, }; SAVER_MODULE(fade_saver, fade_module);
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