/*-
* Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@freebsd.org>
* Copyright (c) 1999 Dag-Erling Coïdan Smørgrav
* 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
* in this position and unchanged.
* 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/linker.h>
#include <sys/fbio.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#define FADE_TIMEOUT 300 /* sec */
static int splash_mode = -1;
static int splash_on = FALSE;
static int pcx_start(video_adapter_t *adp);
static int pcx_end(video_adapter_t *adp);
static int pcx_splash(video_adapter_t *adp, int on);
static int pcx_init(const char *data, int sdepth);
static int pcx_draw(video_adapter_t *adp);
static splash_decoder_t pcx_decoder = {
"splash_pcx", pcx_start, pcx_end, pcx_splash, SPLASH_IMAGE,
};
SPLASH_DECODER(splash_pcx, pcx_decoder);
static struct
{
int width, height, bpsl;
int bpp, planes, zlen;
const u_char *zdata, *palette;
} pcx_info;
static int
pcx_start(video_adapter_t *adp)
{
static int modes[] = {
M_VGA_CG320,
M_VESA_CG640x480,
M_VESA_CG800x600,
M_VESA_CG1024x768,
-1,
};
video_info_t info;
int i;
if (pcx_decoder.data == NULL
|| pcx_decoder.data_size <= 0
|| pcx_init((u_char *)pcx_decoder.data, pcx_decoder.data_size))
return ENODEV;
if (bootverbose)
printf("splash_pcx: image good:\n"
" width = %d\n"
" height = %d\n"
" depth = %d\n"
" planes = %d\n",
pcx_info.width, pcx_info.height,
pcx_info.bpp, pcx_info.planes);
for (i = 0; modes[i] >= 0; ++i) {
if (get_mode_info(adp, modes[i], &info) != 0)
continue;
if (bootverbose)
printf("splash_pcx: considering mode %d:\n"
" vi_width = %d\n"
" vi_height = %d\n"
" vi_depth = %d\n"
" vi_planes = %d\n",
modes[i],
info.vi_width, info.vi_height,
info.vi_depth, info.vi_planes);
if (info.vi_width >= pcx_info.width
&& info.vi_height >= pcx_info.height
&& info.vi_depth == pcx_info.bpp
&& info.vi_planes == pcx_info.planes)
break;
}
splash_mode = modes[i];
if (splash_mode == -1)
return ENODEV;
if (bootverbose)
printf("pcx_splash: selecting mode %d\n", splash_mode);
return 0;
}
static int
pcx_end(video_adapter_t *adp)
{
/* nothing to do */
return 0;
}
static int
pcx_splash(video_adapter_t *adp, int on)
{
if (on) {
if (!splash_on) {
if (set_video_mode(adp, splash_mode) || pcx_draw(adp))
return 1;
splash_on = TRUE;
}
return 0;
} else {
splash_on = FALSE;
return 0;
}
}
struct pcxheader {
u_char manufactor;
u_char version;
u_char encoding;
u_char bpp;
u_short xmin, ymin, xmax, ymax;
u_short hres, vres;
u_char colormap[48];
u_char rsvd;
u_char nplanes;
u_short bpsl;
u_short palinfo;
u_short hsize, vsize;
};
#define MAXSCANLINE 1024
static int
pcx_init(const char *data, int size)
{
const struct pcxheader *hdr;
hdr = (const struct pcxheader *)data;
if (size < 128 + 1 + 1 + 768
|| hdr->manufactor != 10
|| hdr->version != 5
|| hdr->encoding != 1
|| hdr->nplanes != 1
|| hdr->bpp != 8
|| hdr->bpsl > MAXSCANLINE
|| data[size-769] != 12) {
printf("splash_pcx: invalid PCX image\n");
return 1;
}
pcx_info.width = hdr->xmax - hdr->xmin + 1;
pcx_info.height = hdr->ymax - hdr->ymin + 1;
pcx_info.bpsl = hdr->bpsl;
pcx_info.bpp = hdr->bpp;
pcx_info.planes = hdr->nplanes;
pcx_info.zlen = size - (128 + 1 + 768);
pcx_info.zdata = data + 128;
pcx_info.palette = data + size - 768;
return 0;
}
static int
pcx_draw(video_adapter_t *adp)
{
u_char *vidmem;
int swidth, sheight, sbpsl, sdepth, splanes;
int banksize, origin;
int c, i, j, pos, scan, x, y;
u_char line[MAXSCANLINE];
if (pcx_info.zlen < 1)
return 1;
load_palette(adp, pcx_info.palette);
vidmem = (u_char *)adp->va_window;
swidth = adp->va_info.vi_width;
sheight = adp->va_info.vi_height;
sbpsl = adp->va_line_width;
sdepth = adp->va_info.vi_depth;
splanes = adp->va_info.vi_planes;
banksize = adp->va_window_size;
for (origin = 0; origin < sheight*sbpsl; origin += banksize) {
set_origin(adp, origin);
bzero(vidmem, banksize);
}
x = (swidth - pcx_info.width) / 2;
y = (sheight - pcx_info.height) / 2;
origin = 0;
pos = y * sbpsl + x;
while (pos > banksize) {
pos -= banksize;
origin += banksize;
}
set_origin(adp, origin);
for (scan = i = 0; scan < pcx_info.height; ++scan, ++y, pos += sbpsl) {
for (j = 0; j < pcx_info.bpsl && i < pcx_info.zlen; ++i) {
if ((pcx_info.zdata[i] & 0xc0) == 0xc0) {
c = pcx_info.zdata[i++] & 0x3f;
if (i >= pcx_info.zlen)
return 1;
} else {
c = 1;
}
if (j + c > pcx_info.bpsl)
return 1;
while (c--)
line[j++] = pcx_info.zdata[i];
}
if (pos > banksize) {
origin += banksize;
pos -= banksize;
set_origin(adp, origin);
}
if (pos + pcx_info.width > banksize) {
/* scanline crosses bank boundary */
j = banksize - pos;
bcopy(line, vidmem + pos, j);
origin += banksize;
pos -= banksize;
set_origin(adp, origin);
bcopy(line + j, vidmem, pcx_info.width - j);
} else {
bcopy(line, vidmem + pos, pcx_info.width);
}
}
return 0;
}
