diff options
Diffstat (limited to 'src/hw/display/blizzard_template.h')
| -rw-r--r-- | src/hw/display/blizzard_template.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/hw/display/blizzard_template.h b/src/hw/display/blizzard_template.h new file mode 100644 index 0000000..b7ef27c --- /dev/null +++ b/src/hw/display/blizzard_template.h @@ -0,0 +1,146 @@ +/* + * 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) do { *to = from; SKIP_PIXEL(to); } while (0) +# define COPY_PIXEL1(to, from) (*to++ = from) +#elif DEPTH == 15 || DEPTH == 16 +# define PIXEL_TYPE uint16_t +# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0) +# define COPY_PIXEL1(to, from) (*to++ = from) +#elif DEPTH == 24 +# define PIXEL_TYPE uint8_t +# define COPY_PIXEL(to, from) \ + do { \ + to[0] = from; \ + to[1] = (from) >> 8; \ + to[2] = (from) >> 16; \ + SKIP_PIXEL(to); \ + } while (0) + +# define COPY_PIXEL1(to, from) \ + do { \ + *to++ = from; \ + *to++ = (from) >> 8; \ + *to++ = (from) >> 16; \ + } while (0) +#elif DEPTH == 32 +# define PIXEL_TYPE uint32_t +# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0) +# 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 |
