mirror of https://gitee.com/openkylin/qemu.git
138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
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* QEMU Epson S1D13744/S1D13745 templates
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*
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* Copyright (C) 2008 Nokia Corporation
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* Written by Andrzej Zaborowski <andrew@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#define SKIP_PIXEL(to) to += deststep
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#if DEPTH == 8
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# define PIXEL_TYPE uint8_t
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# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
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# define COPY_PIXEL1(to, from) *to ++ = from
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#elif DEPTH == 15 || DEPTH == 16
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# define PIXEL_TYPE uint16_t
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# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
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# define COPY_PIXEL1(to, from) *to ++ = from
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#elif DEPTH == 24
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# define PIXEL_TYPE uint8_t
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# define COPY_PIXEL(to, from) \
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to[0] = from; to[1] = (from) >> 8; to[2] = (from) >> 16; SKIP_PIXEL(to)
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# define COPY_PIXEL1(to, from) \
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*to ++ = from; *to ++ = (from) >> 8; *to ++ = (from) >> 16
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#elif DEPTH == 32
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# define PIXEL_TYPE uint32_t
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# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
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# define COPY_PIXEL1(to, from) *to ++ = from
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#else
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# error unknown bit depth
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#endif
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#ifdef WORDS_BIGENDIAN
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# define SWAP_WORDS 1
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#endif
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static void glue(blizzard_draw_line16_, DEPTH)(PIXEL_TYPE *dest,
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const uint16_t *src, unsigned int width)
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{
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#if !defined(SWAP_WORDS) && DEPTH == 16
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memcpy(dest, src, width);
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#else
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uint16_t data;
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unsigned int r, g, b;
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const uint16_t *end = (const void *) src + width;
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while (src < end) {
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data = lduw_raw(src ++);
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b = (data & 0x1f) << 3;
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data >>= 5;
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g = (data & 0x3f) << 2;
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data >>= 6;
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r = (data & 0x1f) << 3;
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data >>= 5;
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COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
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}
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#endif
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}
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static void glue(blizzard_draw_line24mode1_, DEPTH)(PIXEL_TYPE *dest,
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const uint8_t *src, unsigned int width)
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{
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/* TODO: check if SDL 24-bit planes are not in the same format and
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* if so, use memcpy */
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unsigned int r[2], g[2], b[2];
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const uint8_t *end = src + width;
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while (src < end) {
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g[0] = *src ++;
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r[0] = *src ++;
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r[1] = *src ++;
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b[0] = *src ++;
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COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[0], g[0], b[0]));
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b[1] = *src ++;
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g[1] = *src ++;
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COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[1], g[1], b[1]));
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}
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}
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static void glue(blizzard_draw_line24mode2_, DEPTH)(PIXEL_TYPE *dest,
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const uint8_t *src, unsigned int width)
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{
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unsigned int r, g, b;
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const uint8_t *end = src + width;
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while (src < end) {
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r = *src ++;
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src ++;
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b = *src ++;
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g = *src ++;
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COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
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}
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}
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/* No rotation */
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static blizzard_fn_t glue(blizzard_draw_fn_, DEPTH)[0x10] = {
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NULL,
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/* RGB 5:6:5*/
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(blizzard_fn_t) glue(blizzard_draw_line16_, DEPTH),
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/* RGB 6:6:6 mode 1 */
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(blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
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/* RGB 8:8:8 mode 1 */
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(blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
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NULL, NULL,
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/* RGB 6:6:6 mode 2 */
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(blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
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/* RGB 8:8:8 mode 2 */
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(blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
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/* YUV 4:2:2 */
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NULL,
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/* YUV 4:2:0 */
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NULL,
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NULL, NULL, NULL, NULL, NULL, NULL,
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};
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/* 90deg, 180deg and 270deg rotation */
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static blizzard_fn_t glue(blizzard_draw_fn_r_, DEPTH)[0x10] = {
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/* TODO */
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[0 ... 0xf] = NULL,
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};
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#undef DEPTH
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#undef SKIP_PIXEL
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#undef COPY_PIXEL
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#undef COPY_PIXEL1
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#undef PIXEL_TYPE
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#undef SWAP_WORDS
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