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NetBSD/sys/dev/rasops/rasops8.c

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/* $NetBSD: rasops8.c,v 1.26 2009/03/14 21:04:22 dsl Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rasops8.c,v 1.26 2009/03/14 21:04:22 dsl Exp $");
#include "opt_rasops.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/rasops/rasops.h>
static void rasops8_putchar(void *, int, int, u_int, long attr);
#ifndef RASOPS_SMALL
static void rasops8_putchar8(void *, int, int, u_int, long attr);
static void rasops8_putchar12(void *, int, int, u_int, long attr);
static void rasops8_putchar16(void *, int, int, u_int, long attr);
static void rasops8_makestamp(struct rasops_info *ri, long);
/*
* 4x1 stamp for optimized character blitting
*/
static int32_t stamp[16];
static long stamp_attr;
static int stamp_mutex; /* XXX see note in README */
#endif
/*
* XXX this confuses the hell out of gcc2 (not egcs) which always insists
* that the shift count is negative.
*
* offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
* destination = STAMP_READ(offset)
*/
#define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2))
#define STAMP_MASK (0xf << 2)
#define STAMP_READ(o) (*(int32_t *)((char *)stamp + (o)))
/*
* Initialize a 'rasops_info' descriptor for this depth.
*/
void
rasops8_init(struct rasops_info *ri)
{
switch (ri->ri_font->fontwidth) {
#ifndef RASOPS_SMALL
case 8:
ri->ri_ops.putchar = rasops8_putchar8;
break;
case 12:
ri->ri_ops.putchar = rasops8_putchar12;
break;
case 16:
ri->ri_ops.putchar = rasops8_putchar16;
break;
#endif /* !RASOPS_SMALL */
default:
ri->ri_ops.putchar = rasops8_putchar;
break;
}
}
/*
* Put a single character.
*/
static void
rasops8_putchar(void *cookie, int row, int col, u_int uc, long attr)
{
int width, height, cnt, fs, fb;
u_char *dp, *rp, *hp, *hrp, *fr, clr[2];
struct rasops_info *ri;
ri = (struct rasops_info *)cookie;
hp = hrp = NULL;
if (!CHAR_IN_FONT(uc, ri->ri_font))
return;
#ifdef RASOPS_CLIPPING
/* Catches 'row < 0' case too */
if ((unsigned)row >= (unsigned)ri->ri_rows)
return;
if ((unsigned)col >= (unsigned)ri->ri_cols)
return;
#endif
rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
if (ri->ri_hwbits)
hrp = ri->ri_hwbits + row * ri->ri_yscale + col *
ri->ri_xscale;
height = ri->ri_font->fontheight;
width = ri->ri_font->fontwidth;
clr[0] = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf];
clr[1] = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf];
if (uc == ' ') {
u_char c = clr[0];
while (height--) {
dp = rp;
rp += ri->ri_stride;
if (ri->ri_hwbits) {
hp = hrp;
hrp += ri->ri_stride;
}
for (cnt = width; cnt; cnt--) {
*dp++ = c;
if (ri->ri_hwbits)
*hp++ = c;
}
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
dp = rp;
if (ri->ri_hwbits)
hp = hrp;
fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
fr += fs;
rp += ri->ri_stride;
if (ri->ri_hwbits)
hrp += ri->ri_stride;
for (cnt = width; cnt; cnt--) {
*dp++ = clr[(fb >> 31) & 1];
if (ri->ri_hwbits)
*hp++ = clr[(fb >> 31) & 1];
fb <<= 1;
}
}
}
/* Do underline */
if ((attr & 1) != 0) {
u_char c = clr[1];
rp -= (ri->ri_stride << 1);
if (ri->ri_hwbits)
hrp -= (ri->ri_stride << 1);
while (width--) {
*rp++ = c;
if (ri->ri_hwbits)
*hrp++ = c;
}
}
}
#ifndef RASOPS_SMALL
/*
* Recompute the 4x1 blitting stamp.
*/
static void
rasops8_makestamp(struct rasops_info *ri, long attr)
{
int32_t fg, bg;
int i;
fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff;
bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff;
stamp_attr = attr;
for (i = 0; i < 16; i++) {
#if BYTE_ORDER == BIG_ENDIAN
#define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP
#else
#define NEED_LITTLE_ENDIAN_STAMP 0
#endif
if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) {
/* little endian */
stamp[i] = (i & 8 ? fg : bg);
stamp[i] |= ((i & 4 ? fg : bg) << 8);
stamp[i] |= ((i & 2 ? fg : bg) << 16);
stamp[i] |= ((i & 1 ? fg : bg) << 24);
} else {
/* big endian */
stamp[i] = (i & 1 ? fg : bg);
stamp[i] |= ((i & 2 ? fg : bg) << 8);
stamp[i] |= ((i & 4 ? fg : bg) << 16);
stamp[i] |= ((i & 8 ? fg : bg) << 24);
}
}
}
/*
* Put a single character. This is for 8-pixel wide fonts.
*/
static void
rasops8_putchar8(void *cookie, int row, int col, u_int uc, long attr)
{
struct rasops_info *ri;
int height, fs;
int32_t *rp, *hp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops8_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
hp = NULL;
if (!CHAR_IN_FONT(uc, ri->ri_font))
return;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops8_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
if (ri->ri_hwbits)
hp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == ' ') {
while (height--) {
rp[0] = rp[1] = stamp[0];
DELTA(rp, ri->ri_stride, int32_t *);
if (ri->ri_hwbits) {
hp[0] = stamp[0];
hp[1] = stamp[0];
DELTA(hp, ri->ri_stride, int32_t *);
}
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
if (ri->ri_hwbits) {
hp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) &
STAMP_MASK);
hp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) &
STAMP_MASK);
}
fr += fs;
DELTA(rp, ri->ri_stride, int32_t *);
if (ri->ri_hwbits)
DELTA(hp, ri->ri_stride, int32_t *);
}
}
/* Do underline */
if ((attr & 1) != 0) {
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = stamp[15];
if (ri->ri_hwbits) {
DELTA(hp, -(ri->ri_stride << 1), int32_t *);
hp[0] = stamp[15];
hp[1] = stamp[15];
}
}
stamp_mutex--;
}
/*
* Put a single character. This is for 12-pixel wide fonts.
*/
static void
rasops8_putchar12(void *cookie, int row, int col, u_int uc, long attr)
{
struct rasops_info *ri;
int height, fs;
int32_t *rp, *hrp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops8_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
hrp = NULL;
if (!CHAR_IN_FONT(uc, ri->ri_font))
return;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops8_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
if (ri->ri_hwbits)
hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == ' ') {
while (height--) {
int32_t c = stamp[0];
rp[0] = rp[1] = rp[2] = c;
DELTA(rp, ri->ri_stride, int32_t *);
if (ri->ri_hwbits) {
hrp[0] = c;
hrp[1] = c;
hrp[2] = c;
DELTA(hrp, ri->ri_stride, int32_t *);
}
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
if (ri->ri_hwbits) {
hrp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
hrp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
hrp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
}
fr += fs;
DELTA(rp, ri->ri_stride, int32_t *);
if (ri->ri_hwbits)
DELTA(hrp, ri->ri_stride, int32_t *);
}
}
/* Do underline */
if ((attr & 1) != 0) {
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = rp[2] = stamp[15];
if (ri->ri_hwbits) {
DELTA(hrp, -(ri->ri_stride << 1), int32_t *);
hrp[0] = stamp[15];
hrp[1] = stamp[15];
hrp[2] = stamp[15];
}
}
stamp_mutex--;
}
/*
* Put a single character. This is for 16-pixel wide fonts.
*/
static void
rasops8_putchar16(void *cookie, int row, int col, u_int uc, long attr)
{
struct rasops_info *ri;
int height, fs;
int32_t *rp, *hrp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops8_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
hrp = NULL;
if (!CHAR_IN_FONT(uc, ri->ri_font))
return;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops8_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
if (ri->ri_hwbits)
hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == ' ') {
while (height--) {
rp[0] = rp[1] = rp[2] = rp[3] = stamp[0];
if (ri->ri_hwbits) {
hrp[0] = stamp[0];
hrp[1] = stamp[0];
hrp[2] = stamp[0];
hrp[3] = stamp[0];
}
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK);
if (ri->ri_hwbits) {
hrp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
hrp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
hrp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
hrp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK);
}
fr += fs;
DELTA(rp, ri->ri_stride, int32_t *);
if (ri->ri_hwbits)
DELTA(hrp, ri->ri_stride, int32_t *);
}
}
/* Do underline */
if ((attr & 1) != 0) {
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = rp[2] = rp[3] = stamp[15];
if (ri->ri_hwbits) {
DELTA(hrp, -(ri->ri_stride << 1), int32_t *);
hrp[0] = stamp[15];
hrp[1] = stamp[15];
hrp[2] = stamp[15];
hrp[3] = stamp[15];
}
}
stamp_mutex--;
}
#endif /* !RASOPS_SMALL */
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