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/*
* QEMU Epson S1D13744/S1D13745 templates
*
* Copyright (C) 2008 Nokia Corporation
* Written by Andrzej Zaborowski <andrew@openedhand.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#define SKIP_PIXEL(to) to += deststep
#if DEPTH == 8
# define PIXEL_TYPE uint8_t
# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
# define COPY_PIXEL1(to, from) *to ++ = from
#elif DEPTH == 15 || DEPTH == 16
# define PIXEL_TYPE uint16_t
# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
# define COPY_PIXEL1(to, from) *to ++ = from
#elif DEPTH == 24
# define PIXEL_TYPE uint8_t
# define COPY_PIXEL(to, from) \
to[0] = from; to[1] = (from) >> 8; to[2] = (from) >> 16; SKIP_PIXEL(to)
# define COPY_PIXEL1(to, from) \
*to ++ = from; *to ++ = (from) >> 8; *to ++ = (from) >> 16
#elif DEPTH == 32
# define PIXEL_TYPE uint32_t
# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
# define COPY_PIXEL1(to, from) *to ++ = from
#else
# error unknown bit depth
#endif
#ifdef HOST_WORDS_BIGENDIAN
# define SWAP_WORDS 1
#endif
static void glue(blizzard_draw_line16_, DEPTH)(PIXEL_TYPE *dest,
const uint16_t *src, unsigned int width)
{
#if !defined(SWAP_WORDS) && DEPTH == 16
memcpy(dest, src, width);
#else
uint16_t data;
unsigned int r, g, b;
const uint16_t *end = (const void *) src + width;
while (src < end) {
data = *src ++;
b = (data & 0x1f) << 3;
data >>= 5;
g = (data & 0x3f) << 2;
data >>= 6;
r = (data & 0x1f) << 3;
data >>= 5;
COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
}
#endif
}
static void glue(blizzard_draw_line24mode1_, DEPTH)(PIXEL_TYPE *dest,
const uint8_t *src, unsigned int width)
{
/* TODO: check if SDL 24-bit planes are not in the same format and
* if so, use memcpy */
unsigned int r[2], g[2], b[2];
const uint8_t *end = src + width;
while (src < end) {
g[0] = *src ++;
r[0] = *src ++;
r[1] = *src ++;
b[0] = *src ++;
COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[0], g[0], b[0]));
b[1] = *src ++;
g[1] = *src ++;
COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[1], g[1], b[1]));
}
}
static void glue(blizzard_draw_line24mode2_, DEPTH)(PIXEL_TYPE *dest,
const uint8_t *src, unsigned int width)
{
unsigned int r, g, b;
const uint8_t *end = src + width;
while (src < end) {
r = *src ++;
src ++;
b = *src ++;
g = *src ++;
COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
}
}
/* No rotation */
static blizzard_fn_t glue(blizzard_draw_fn_, DEPTH)[0x10] = {
NULL,
/* RGB 5:6:5*/
(blizzard_fn_t) glue(blizzard_draw_line16_, DEPTH),
/* RGB 6:6:6 mode 1 */
(blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
/* RGB 8:8:8 mode 1 */
(blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
NULL, NULL,
/* RGB 6:6:6 mode 2 */
(blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
/* RGB 8:8:8 mode 2 */
(blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
/* YUV 4:2:2 */
NULL,
/* YUV 4:2:0 */
NULL,
NULL, NULL, NULL, NULL, NULL, NULL,
};
/* 90deg, 180deg and 270deg rotation */
static blizzard_fn_t glue(blizzard_draw_fn_r_, DEPTH)[0x10] = {
/* TODO */
[0 ... 0xf] = NULL,
};
#undef DEPTH
#undef SKIP_PIXEL
#undef COPY_PIXEL
#undef COPY_PIXEL1
#undef PIXEL_TYPE
#undef SWAP_WORDS
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