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qemu/hw/display/vga-helpers.h

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/*
* QEMU VGA Emulator templates
*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
static inline void vga_draw_glyph_line(uint8_t *d, uint32_t font_data,
uint32_t xorcol, uint32_t bgcol)
{
((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
}
static void vga_draw_glyph8(uint8_t *d, int linesize,
const uint8_t *font_ptr, int h,
uint32_t fgcol, uint32_t bgcol)
{
uint32_t font_data, xorcol;
xorcol = bgcol ^ fgcol;
do {
font_data = font_ptr[0];
vga_draw_glyph_line(d, font_data, xorcol, bgcol);
font_ptr += 4;
d += linesize;
} while (--h);
}
static void vga_draw_glyph16(uint8_t *d, int linesize,
const uint8_t *font_ptr, int h,
uint32_t fgcol, uint32_t bgcol)
{
uint32_t font_data, xorcol;
xorcol = bgcol ^ fgcol;
do {
font_data = font_ptr[0];
vga_draw_glyph_line(d, expand4to8[font_data >> 4],
xorcol, bgcol);
vga_draw_glyph_line(d + 32, expand4to8[font_data & 0x0f],
xorcol, bgcol);
font_ptr += 4;
d += linesize;
} while (--h);
}
static void vga_draw_glyph9(uint8_t *d, int linesize,
const uint8_t *font_ptr, int h,
uint32_t fgcol, uint32_t bgcol, int dup9)
{
uint32_t font_data, xorcol, v;
xorcol = bgcol ^ fgcol;
do {
font_data = font_ptr[0];
((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[7] = v;
if (dup9)
((uint32_t *)d)[8] = v;
else
((uint32_t *)d)[8] = bgcol;
font_ptr += 4;
d += linesize;
} while (--h);
}
/*
* 4 color mode
*/
static void vga_draw_line2(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t plane_mask, *palette, data, v;
int x;
palette = s1->last_palette;
plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
width >>= 3;
for(x = 0; x < width; x++) {
data = ((uint32_t *)s)[0];
data &= plane_mask;
v = expand2[GET_PLANE(data, 0)];
v |= expand2[GET_PLANE(data, 2)] << 2;
((uint32_t *)d)[0] = palette[v >> 12];
((uint32_t *)d)[1] = palette[(v >> 8) & 0xf];
((uint32_t *)d)[2] = palette[(v >> 4) & 0xf];
((uint32_t *)d)[3] = palette[(v >> 0) & 0xf];
v = expand2[GET_PLANE(data, 1)];
v |= expand2[GET_PLANE(data, 3)] << 2;
((uint32_t *)d)[4] = palette[v >> 12];
((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
d += 32;
s += 4;
}
}
#define PUT_PIXEL2(d, n, v) \
((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v)
/*
* 4 color mode, dup2 horizontal
*/
static void vga_draw_line2d2(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t plane_mask, *palette, data, v;
int x;
palette = s1->last_palette;
plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
width >>= 3;
for(x = 0; x < width; x++) {
data = ((uint32_t *)s)[0];
data &= plane_mask;
v = expand2[GET_PLANE(data, 0)];
v |= expand2[GET_PLANE(data, 2)] << 2;
PUT_PIXEL2(d, 0, palette[v >> 12]);
PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
v = expand2[GET_PLANE(data, 1)];
v |= expand2[GET_PLANE(data, 3)] << 2;
PUT_PIXEL2(d, 4, palette[v >> 12]);
PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
d += 64;
s += 4;
}
}
/*
* 16 color mode
*/
static void vga_draw_line4(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t plane_mask, data, v, *palette;
int x;
palette = s1->last_palette;
plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
width >>= 3;
for(x = 0; x < width; x++) {
data = ((uint32_t *)s)[0];
data &= plane_mask;
v = expand4[GET_PLANE(data, 0)];
v |= expand4[GET_PLANE(data, 1)] << 1;
v |= expand4[GET_PLANE(data, 2)] << 2;
v |= expand4[GET_PLANE(data, 3)] << 3;
((uint32_t *)d)[0] = palette[v >> 28];
((uint32_t *)d)[1] = palette[(v >> 24) & 0xf];
((uint32_t *)d)[2] = palette[(v >> 20) & 0xf];
((uint32_t *)d)[3] = palette[(v >> 16) & 0xf];
((uint32_t *)d)[4] = palette[(v >> 12) & 0xf];
((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
d += 32;
s += 4;
}
}
/*
* 16 color mode, dup2 horizontal
*/
static void vga_draw_line4d2(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t plane_mask, data, v, *palette;
int x;
palette = s1->last_palette;
plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
width >>= 3;
for(x = 0; x < width; x++) {
data = ((uint32_t *)s)[0];
data &= plane_mask;
v = expand4[GET_PLANE(data, 0)];
v |= expand4[GET_PLANE(data, 1)] << 1;
v |= expand4[GET_PLANE(data, 2)] << 2;
v |= expand4[GET_PLANE(data, 3)] << 3;
PUT_PIXEL2(d, 0, palette[v >> 28]);
PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
d += 64;
s += 4;
}
}
/*
* 256 color mode, double pixels
*
* XXX: add plane_mask support (never used in standard VGA modes)
*/
static void vga_draw_line8d2(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t *palette;
int x;
palette = s1->last_palette;
width >>= 3;
for(x = 0; x < width; x++) {
PUT_PIXEL2(d, 0, palette[s[0]]);
PUT_PIXEL2(d, 1, palette[s[1]]);
PUT_PIXEL2(d, 2, palette[s[2]]);
PUT_PIXEL2(d, 3, palette[s[3]]);
d += 32;
s += 4;
}
}
/*
* standard 256 color mode
*
* XXX: add plane_mask support (never used in standard VGA modes)
*/
static void vga_draw_line8(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
uint32_t *palette;
int x;
palette = s1->last_palette;
width >>= 3;
for(x = 0; x < width; x++) {
((uint32_t *)d)[0] = palette[s[0]];
((uint32_t *)d)[1] = palette[s[1]];
((uint32_t *)d)[2] = palette[s[2]];
((uint32_t *)d)[3] = palette[s[3]];
((uint32_t *)d)[4] = palette[s[4]];
((uint32_t *)d)[5] = palette[s[5]];
((uint32_t *)d)[6] = palette[s[6]];
((uint32_t *)d)[7] = palette[s[7]];
d += 32;
s += 8;
}
}
/*
* 15 bit color
*/
static void vga_draw_line15_le(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t v, r, g, b;
w = width;
do {
v = lduw_le_p((void *)s);
r = (v >> 7) & 0xf8;
g = (v >> 2) & 0xf8;
b = (v << 3) & 0xf8;
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 2;
d += 4;
} while (--w != 0);
}
static void vga_draw_line15_be(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t v, r, g, b;
w = width;
do {
v = lduw_be_p((void *)s);
r = (v >> 7) & 0xf8;
g = (v >> 2) & 0xf8;
b = (v << 3) & 0xf8;
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 2;
d += 4;
} while (--w != 0);
}
/*
* 16 bit color
*/
static void vga_draw_line16_le(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t v, r, g, b;
w = width;
do {
v = lduw_le_p((void *)s);
r = (v >> 8) & 0xf8;
g = (v >> 3) & 0xfc;
b = (v << 3) & 0xf8;
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 2;
d += 4;
} while (--w != 0);
}
static void vga_draw_line16_be(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t v, r, g, b;
w = width;
do {
v = lduw_be_p((void *)s);
r = (v >> 8) & 0xf8;
g = (v >> 3) & 0xfc;
b = (v << 3) & 0xf8;
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 2;
d += 4;
} while (--w != 0);
}
/*
* 24 bit color
*/
static void vga_draw_line24_le(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t r, g, b;
w = width;
do {
b = s[0];
g = s[1];
r = s[2];
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 3;
d += 4;
} while (--w != 0);
}
static void vga_draw_line24_be(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int w;
uint32_t r, g, b;
w = width;
do {
r = s[0];
g = s[1];
b = s[2];
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 3;
d += 4;
} while (--w != 0);
}
/*
* 32 bit color
*/
static void vga_draw_line32_le(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
#ifndef HOST_WORDS_BIGENDIAN
memcpy(d, s, width * 4);
#else
int w;
uint32_t r, g, b;
w = width;
do {
b = s[0];
g = s[1];
r = s[2];
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 4;
d += 4;
} while (--w != 0);
#endif
}
static void vga_draw_line32_be(VGACommonState *s1, uint8_t *d,
const uint8_t *s, int width)
{
#ifdef HOST_WORDS_BIGENDIAN
memcpy(d, s, width * 4);
#else
int w;
uint32_t r, g, b;
w = width;
do {
r = s[1];
g = s[2];
b = s[3];
((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
s += 4;
d += 4;
} while (--w != 0);
#endif
}
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