1c27745f73
the screen width. - Store the current video mode information in the `video_adapter' struct. - The size of the `v_offscreensize' field in the VESA mode information block is u_int16, not u_int8.
550 lines
15 KiB
C
550 lines
15 KiB
C
/*-
|
|
* Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
|
|
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@freebsd.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.
|
|
*
|
|
* $Id: splash_bmp.c,v 1.5 1999/01/26 10:00:02 yokota Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/linker.h>
|
|
|
|
#include <machine/console.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 bmp_start(video_adapter_t *adp);
|
|
static int bmp_end(video_adapter_t *adp);
|
|
static int bmp_splash(video_adapter_t *adp, int on);
|
|
static int bmp_Init(const char *data, int swidth, int sheight, int sdepth);
|
|
static int bmp_Draw(video_adapter_t *adp);
|
|
|
|
static splash_decoder_t bmp_decoder = {
|
|
"splash_bmp", bmp_start, bmp_end, bmp_splash, SPLASH_IMAGE,
|
|
};
|
|
|
|
SPLASH_DECODER(splash_bmp, bmp_decoder);
|
|
|
|
static int
|
|
bmp_start(video_adapter_t *adp)
|
|
{
|
|
/* currently only 256-color modes are supported XXX */
|
|
static int modes[] = {
|
|
M_VESA_CG640x480,
|
|
M_VESA_CG800x600,
|
|
M_VESA_CG1024x768,
|
|
/*
|
|
* As 320x200 doesn't generally look great,
|
|
* it's least preferred here.
|
|
*/
|
|
M_VGA_CG320,
|
|
-1,
|
|
};
|
|
video_info_t info;
|
|
int i;
|
|
|
|
if ((bmp_decoder.data == NULL) || (bmp_decoder.data_size <= 0))
|
|
return ENODEV;
|
|
for (i = 0; modes[i] >= 0; ++i) {
|
|
if (((*vidsw[adp->va_index]->get_info)(adp, modes[i], &info) == 0)
|
|
&& (bmp_Init((u_char *)bmp_decoder.data,
|
|
info.vi_width, info.vi_height, info.vi_depth) == 0))
|
|
break;
|
|
}
|
|
splash_mode = modes[i];
|
|
if (bootverbose)
|
|
printf("bmp_start(): splash_mode:%d\n", splash_mode);
|
|
return ((splash_mode < 0) ? ENODEV : 0);
|
|
}
|
|
|
|
static int
|
|
bmp_end(video_adapter_t *adp)
|
|
{
|
|
/* nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bmp_splash(video_adapter_t *adp, int on)
|
|
{
|
|
static u_char pal[256*3];
|
|
static long time_stamp;
|
|
struct timeval tv;
|
|
int i;
|
|
|
|
if (on) {
|
|
if (!splash_on) {
|
|
/* set up the video mode and draw something */
|
|
if ((*vidsw[adp->va_index]->set_mode)(adp, splash_mode))
|
|
return 1;
|
|
if (bmp_Draw(adp))
|
|
return 1;
|
|
(*vidsw[adp->va_index]->save_palette)(adp, pal);
|
|
time_stamp = 0;
|
|
splash_on = TRUE;
|
|
}
|
|
/*
|
|
* This is a kludge to fade the image away. This section of the
|
|
* code takes effect only after the system is completely up.
|
|
* FADE_TIMEOUT should be configurable.
|
|
*/
|
|
if (!cold) {
|
|
getmicrotime(&tv);
|
|
if (time_stamp == 0)
|
|
time_stamp = tv.tv_sec;
|
|
if (tv.tv_sec > time_stamp + FADE_TIMEOUT) {
|
|
for (i = 0; i < sizeof(pal); ++i) {
|
|
if (pal[i] > 40)
|
|
pal[i] -= 4;
|
|
}
|
|
(*vidsw[adp->va_index]->load_palette)(adp, pal);
|
|
}
|
|
}
|
|
return 0;
|
|
} else {
|
|
/* the video mode will be restored by the caller */
|
|
splash_on = FALSE;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Code to handle Microsoft DIB (".BMP") format images.
|
|
**
|
|
** Blame me (msmith@freebsd.org) if this is broken, not Soren.
|
|
*/
|
|
|
|
typedef struct tagBITMAPFILEHEADER { /* bmfh */
|
|
u_short bfType __attribute__ ((packed));
|
|
int bfSize __attribute__ ((packed));
|
|
u_short bfReserved1 __attribute__ ((packed));
|
|
u_short bfReserved2 __attribute__ ((packed));
|
|
int bfOffBits __attribute__ ((packed));
|
|
} BITMAPFILEHEADER;
|
|
|
|
typedef struct tagBITMAPINFOHEADER { /* bmih */
|
|
int biSize __attribute__ ((packed));
|
|
int biWidth __attribute__ ((packed));
|
|
int biHeight __attribute__ ((packed));
|
|
short biPlanes __attribute__ ((packed));
|
|
short biBitCount __attribute__ ((packed));
|
|
int biCompression __attribute__ ((packed));
|
|
int biSizeImage __attribute__ ((packed));
|
|
int biXPelsPerMeter __attribute__ ((packed));
|
|
int biYPelsPerMeter __attribute__ ((packed));
|
|
int biClrUsed __attribute__ ((packed));
|
|
int biClrImportant __attribute__ ((packed));
|
|
} BITMAPINFOHEADER;
|
|
|
|
typedef struct tagRGBQUAD { /* rgbq */
|
|
u_char rgbBlue __attribute__ ((packed));
|
|
u_char rgbGreen __attribute__ ((packed));
|
|
u_char rgbRed __attribute__ ((packed));
|
|
u_char rgbReserved __attribute__ ((packed));
|
|
} RGBQUAD;
|
|
|
|
typedef struct tagBITMAPINFO { /* bmi */
|
|
BITMAPINFOHEADER bmiHeader __attribute__ ((packed));
|
|
RGBQUAD bmiColors[256] __attribute__ ((packed));
|
|
} BITMAPINFO;
|
|
|
|
typedef struct tagBITMAPF
|
|
{
|
|
BITMAPFILEHEADER bmfh __attribute__ ((packed));
|
|
BITMAPINFO bmfi __attribute__ ((packed));
|
|
} BITMAPF;
|
|
|
|
#define BI_RGB 0
|
|
#define BI_RLE8 1
|
|
#define BI_RLE4 2
|
|
|
|
/*
|
|
** all we actually care about the image
|
|
*/
|
|
typedef struct
|
|
{
|
|
int width,height; /* image dimensions */
|
|
int swidth,sheight; /* screen dimensions for the current mode */
|
|
u_char sdepth; /* screen depth (1, 4, 8 bpp) */
|
|
int ncols; /* number of colours */
|
|
u_char palette[256][3]; /* raw palette data */
|
|
u_char format; /* one of the BI_* constants above */
|
|
u_char *data; /* pointer to the raw data */
|
|
u_char *index; /* running pointer to the data while drawing */
|
|
u_char *vidmem; /* video memory allocated for drawing */
|
|
video_adapter_t *adp;
|
|
int bank;
|
|
} BMP_INFO;
|
|
|
|
static BMP_INFO bmp_info;
|
|
|
|
static void
|
|
fill(BMP_INFO *info, int x, int y, int xsize, int ysize)
|
|
{
|
|
u_char *window;
|
|
int banksize;
|
|
int bank;
|
|
int p;
|
|
|
|
banksize = info->adp->va_window_size;
|
|
bank = (info->adp->va_line_width*y + x)/banksize;
|
|
window = (u_char *)info->adp->va_window;
|
|
(*vidsw[info->adp->va_index]->set_win_org)(info->adp, bank*banksize);
|
|
while (ysize > 0) {
|
|
p = (info->adp->va_line_width*y + x)%banksize;
|
|
for (; (p + xsize <= banksize) && ysize > 0; --ysize, ++y) {
|
|
generic_bzero(window + p, xsize);
|
|
p += info->adp->va_line_width;
|
|
}
|
|
if (ysize <= 0)
|
|
break;
|
|
if (p < banksize) {
|
|
/* the last line crosses the window boundary */
|
|
generic_bzero(window + p, banksize - p);
|
|
}
|
|
++bank; /* next bank */
|
|
(*vidsw[info->adp->va_index]->set_win_org)(info->adp, bank*banksize);
|
|
if (p < banksize) {
|
|
/* the remaining part of the last line */
|
|
generic_bzero(window, p + xsize - banksize);
|
|
++y;
|
|
--ysize;
|
|
}
|
|
}
|
|
info->bank = bank;
|
|
}
|
|
|
|
/*
|
|
** bmp_SetPix
|
|
**
|
|
** Given (info), set the pixel at (x),(y) to (val)
|
|
**
|
|
*/
|
|
static void
|
|
bmp_SetPix(BMP_INFO *info, int x, int y, u_char val)
|
|
{
|
|
int sofs, bofs;
|
|
u_char tpv, mask;
|
|
int newbank;
|
|
|
|
/*
|
|
* range check to avoid explosions
|
|
*/
|
|
if ((x < 0) || (x >= info->swidth) || (y < 0) || (y >= info->sheight))
|
|
return;
|
|
|
|
/*
|
|
* calculate offset into video memory;
|
|
* because 0,0 is bottom-left for DIB, we have to convert.
|
|
*/
|
|
sofs = ((info->height - (y+1) + (info->sheight - info->height) / 2)
|
|
* info->adp->va_line_width);
|
|
|
|
switch(info->sdepth) {
|
|
case 1:
|
|
sofs += ((x + (info->swidth - info->width) / 2) >> 3);
|
|
bofs = x & 0x7; /* offset within byte */
|
|
|
|
val &= 1; /* mask pixel value */
|
|
mask = ~(0x80 >> bofs); /* calculate bit mask */
|
|
tpv = *(info->vidmem+sofs) & mask; /* get screen contents, excluding masked bit */
|
|
*(info->vidmem+sofs) = tpv | (val << (8-bofs)); /* write new bit */
|
|
break;
|
|
|
|
/* XXX only correct for non-interleaved modes */
|
|
case 4:
|
|
sofs += ((x + (info->swidth - info->width) / 2) >> 1);
|
|
bofs = x & 0x1; /* offset within byte */
|
|
|
|
val &= 0xf; /* mask pixel value */
|
|
mask = bofs ? 0x0f : 0xf0; /* calculate bit mask */
|
|
tpv = *(info->vidmem+sofs) & mask; /* get screen contents, excluding masked bits */
|
|
*(info->vidmem+sofs) = tpv | (val << (bofs ? 0 : 4)); /* write new bits */
|
|
break;
|
|
|
|
case 8:
|
|
sofs += x + (info->swidth - info->width) / 2;
|
|
newbank = sofs/info->adp->va_window_size;
|
|
if (info->bank != newbank) {
|
|
(*vidsw[info->adp->va_index]->set_win_org)(info->adp, newbank*info->adp->va_window_size);
|
|
info->bank = newbank;
|
|
}
|
|
sofs %= info->adp->va_window_size;
|
|
*(info->vidmem+sofs) = val;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** bmp_DecodeRLE4
|
|
**
|
|
** Given (data) pointing to a line of RLE4-format data and (line) being the starting
|
|
** line onscreen, decode the line.
|
|
*/
|
|
static void
|
|
bmp_DecodeRLE4(BMP_INFO *info, int line)
|
|
{
|
|
int count; /* run count */
|
|
u_char val;
|
|
int x,y; /* screen position */
|
|
|
|
x = 0; /* starting position */
|
|
y = line;
|
|
|
|
/* loop reading data */
|
|
for (;;) {
|
|
/*
|
|
* encoded mode starts with a run length, and then a byte with
|
|
* two colour indexes to alternate between for the run
|
|
*/
|
|
if (*info->index) {
|
|
for (count = 0; count < *info->index; count++, x++) {
|
|
if (count & 1) { /* odd count, low nybble */
|
|
bmp_SetPix(info, x, y, *(info->index+1) & 0x0f);
|
|
} else { /* even count, high nybble */
|
|
bmp_SetPix(info, x, y, (*(info->index+1) >>4) & 0x0f);
|
|
}
|
|
}
|
|
info->index += 2;
|
|
/*
|
|
* A leading zero is an escape; it may signal the end of the
|
|
* bitmap, a cursor move, or some absolute data.
|
|
*/
|
|
} else { /* zero tag may be absolute mode or an escape */
|
|
switch (*(info->index+1)) {
|
|
case 0: /* end of line */
|
|
info->index += 2;
|
|
return;
|
|
case 1: /* end of bitmap */
|
|
info->index = NULL;
|
|
return;
|
|
case 2: /* move */
|
|
x += *(info->index + 2); /* new coords */
|
|
y += *(info->index + 3);
|
|
info->index += 4;
|
|
break;
|
|
default: /* literal bitmap data */
|
|
for (count = 0; count < *(info->index + 1); count++, x++) {
|
|
val = *(info->index + 2 + (count / 2)); /* byte with nybbles */
|
|
if (count & 1) {
|
|
val &= 0xf; /* get low nybble */
|
|
} else {
|
|
val = (val >> 4); /* get high nybble */
|
|
}
|
|
bmp_SetPix(info, x, y, val);
|
|
}
|
|
/* warning, this depends on integer truncation, do not hand-optimise! */
|
|
info->index += 2 + ((count + 3) / 4) * 2;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
** bmp_DecodeRLE8
|
|
** Given (data) pointing to a line of RLE4-format data and (line) being the starting
|
|
** line onscreen, decode the line.
|
|
*/
|
|
static void
|
|
bmp_DecodeRLE8(BMP_INFO *info, int line)
|
|
{
|
|
int count; /* run count */
|
|
int x,y; /* screen position */
|
|
|
|
x = 0; /* starting position */
|
|
y = line;
|
|
|
|
/* loop reading data */
|
|
for(;;) {
|
|
/*
|
|
* encoded mode starts with a run length, and then a byte with
|
|
* two colour indexes to alternate between for the run
|
|
*/
|
|
if (*info->index) {
|
|
for (count = 0; count < *info->index; count++, x++)
|
|
bmp_SetPix(info, x, y, *(info->index+1));
|
|
info->index += 2;
|
|
/*
|
|
* A leading zero is an escape; it may signal the end of the
|
|
* bitmap, a cursor move, or some absolute data.
|
|
*/
|
|
} else { /* zero tag may be absolute mode or an escape */
|
|
switch(*(info->index+1)) {
|
|
case 0: /* end of line */
|
|
info->index += 2;
|
|
return;
|
|
case 1: /* end of bitmap */
|
|
info->index = NULL;
|
|
return;
|
|
case 2: /* move */
|
|
x += *(info->index + 2); /* new coords */
|
|
y += *(info->index + 3);
|
|
info->index += 4;
|
|
break;
|
|
default: /* literal bitmap data */
|
|
for (count = 0; count < *(info->index + 1); count++, x++)
|
|
bmp_SetPix(info, x, y, *(info->index + 2 + count));
|
|
/* must be an even count */
|
|
info->index += 2 + count + (count & 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
** bmp_DecodeLine
|
|
**
|
|
** Given (info) pointing to an image being decoded, (line) being the line currently
|
|
** being displayed, decode a line of data.
|
|
*/
|
|
static void
|
|
bmp_DecodeLine(BMP_INFO *info, int line)
|
|
{
|
|
int x;
|
|
|
|
switch(info->format) {
|
|
case BI_RGB:
|
|
for (x = 0; x < info->width; x++, info->index++)
|
|
bmp_SetPix(info, x, line, *info->index);
|
|
info->index += 3 - (--x % 4);
|
|
break;
|
|
case BI_RLE4:
|
|
bmp_DecodeRLE4(info, line);
|
|
break;
|
|
case BI_RLE8:
|
|
bmp_DecodeRLE8(info, line);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** bmp_Init
|
|
**
|
|
** Given a pointer (data) to the image of a BMP file, fill in bmp_info with what
|
|
** can be learnt from it. Return nonzero if the file isn't usable.
|
|
**
|
|
** Take screen dimensions (swidth), (sheight) and (sdepth) and make sure we
|
|
** can work with these.
|
|
*/
|
|
static int
|
|
bmp_Init(const char *data, int swidth, int sheight, int sdepth)
|
|
{
|
|
BITMAPF *bmf = (BITMAPF *)data;
|
|
int pind;
|
|
|
|
bmp_info.data = NULL; /* assume setup failed */
|
|
|
|
/* check file ID */
|
|
if (bmf->bmfh.bfType != 0x4d42) {
|
|
return(1); /* XXX check word ordering for big-endian ports? */
|
|
}
|
|
|
|
/* save what we know about the screen */
|
|
bmp_info.swidth = swidth;
|
|
bmp_info.sheight = sheight;
|
|
bmp_info.sdepth = sdepth;
|
|
|
|
/* where's the data? */
|
|
bmp_info.data = (u_char *)data + bmf->bmfh.bfOffBits;
|
|
|
|
/* image parameters */
|
|
bmp_info.width = bmf->bmfi.bmiHeader.biWidth;
|
|
bmp_info.height = bmf->bmfi.bmiHeader.biHeight;
|
|
bmp_info.format = bmf->bmfi.bmiHeader.biCompression;
|
|
|
|
switch(bmp_info.format) { /* check compression format */
|
|
case BI_RGB:
|
|
case BI_RLE4:
|
|
case BI_RLE8:
|
|
break;
|
|
default:
|
|
return(1); /* unsupported compression format */
|
|
}
|
|
|
|
/* palette details */
|
|
bmp_info.ncols = (bmf->bmfi.bmiHeader.biClrUsed);
|
|
bzero(bmp_info.palette,sizeof(bmp_info.palette));
|
|
if (bmp_info.ncols == 0) { /* uses all of them */
|
|
bmp_info.ncols = 1 << bmf->bmfi.bmiHeader.biBitCount;
|
|
}
|
|
if ((bmp_info.height > bmp_info.sheight) ||
|
|
(bmp_info.width > bmp_info.swidth) ||
|
|
(bmp_info.ncols > (1 << sdepth))) {
|
|
return(1); /* beyond screen capacity */
|
|
}
|
|
|
|
/* read palette */
|
|
for (pind = 0; pind < bmp_info.ncols; pind++) {
|
|
bmp_info.palette[pind][0] = bmf->bmfi.bmiColors[pind].rgbRed;
|
|
bmp_info.palette[pind][1] = bmf->bmfi.bmiColors[pind].rgbGreen;
|
|
bmp_info.palette[pind][2] = bmf->bmfi.bmiColors[pind].rgbBlue;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
** bmp_Draw
|
|
**
|
|
** Render the image. Return nonzero if that's not possible.
|
|
**
|
|
*/
|
|
static int
|
|
bmp_Draw(video_adapter_t *adp)
|
|
{
|
|
int line;
|
|
|
|
if (bmp_info.data == NULL) { /* init failed, do nothing */
|
|
return(1);
|
|
}
|
|
|
|
/* clear the screen */
|
|
bmp_info.vidmem = (u_char *)adp->va_window;
|
|
bmp_info.adp = adp;
|
|
/* XXX; the following line is correct only for 8bpp modes */
|
|
fill(&bmp_info, 0, 0, bmp_info.swidth, bmp_info.sheight);
|
|
(*vidsw[adp->va_index]->set_win_org)(adp, 0);
|
|
bmp_info.bank = 0;
|
|
|
|
/* initialise the info structure for drawing */
|
|
bmp_info.index = bmp_info.data;
|
|
|
|
/* set the palette for our image */
|
|
(*vidsw[adp->va_index]->load_palette)(adp, (u_char *)&bmp_info.palette);
|
|
|
|
for (line = 0; (line < bmp_info.height) && bmp_info.index; line++) {
|
|
bmp_DecodeLine(&bmp_info, line);
|
|
}
|
|
return(0);
|
|
}
|