freebsd-dev/sys/dev/fb/splash_txt.c
Eitan Adler dca400f352 - Add support for ASCII art splash screens in TheDraw format
PR:		kern/143370
Submitted by:	Antony Mawer <antony@mawer.org>
Reviewed by:	gjb (doc)
Reviewed by:	des (style)
Approved by:	ed
MFC after:	1 month
2011-12-12 21:12:07 +00:00

136 lines
3.6 KiB
C

/*-
* Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@freebsd.org>
* Copyright (c) 2005 Antony Mawer <antony@mawer.org>
* 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.
* 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 AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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/module.h>
#include <sys/kernel.h>
#include <sys/consio.h>
#include <sys/fbio.h>
#include <machine/pc/display.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
static int splash_on = FALSE;
static int txt_init(video_adapter_t *adp);
static int txt_end(video_adapter_t *adp);
static int txt_splash(video_adapter_t * adp, const int on);
/* These are rows by columns of the text-mode display device. */
#define BIN_IMAGE_WIDTH 80
#define BIN_IMAGE_HEIGHT 25
static splash_decoder_t txt_decoder = {
.name = "splash_txt",
.init = txt_init,
.term = txt_end,
.splash = txt_splash,
.data_type = SPLASH_IMAGE,
};
SPLASH_DECODER(splash_txt, txt_decoder);
static void
draw_text_splash(sc_softc_t *sc)
{
u_int x, y;
u_char ch, attr;
u_char *pdata = txt_decoder.data;
/* Init failed. */
if (txt_decoder.data == NULL)
return;
for (y = 0; y < BIN_IMAGE_HEIGHT; y++) {
for (x = 0; x < BIN_IMAGE_WIDTH; x++) {
ch = *pdata++;
attr = *pdata++;
sc_vtb_putc(&sc->cur_scp->scr,
(y * sc->cur_scp->xsize) + x,
sc->scr_map[ch], (int)attr << 8);
}
}
}
static int
txt_init(video_adapter_t *adp)
{
/* Ensure that the image data exists. */
if (txt_decoder.data == NULL || txt_decoder.data_size <= 0) {
printf("splash_txt: No ASCII bitmap file found\n");
return (ENODEV);
}
return (0);
}
static int
txt_end(video_adapter_t *adp)
{
return (0);
}
static int
txt_splash(video_adapter_t *adp, const int on)
{
sc_softc_t *sc;
scr_stat *scp;
sc = sc_find_softc(adp, NULL);
if (sc == NULL)
return (EAGAIN);
scp = sc->cur_scp;
if (on) {
if (!splash_on) {
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return EAGAIN;
/* Clear screen and set border colour. */
sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
(FG_LIGHTGREY | BG_BLACK) << 8);
(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
sc_set_border(scp, 0);
splash_on = TRUE;
/* Display the splash screen. */
draw_text_splash(sc);
}
return (0);
} else {
/* The video mode will be restored by the caller. */
splash_on = FALSE;
return (0);
}
}