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SH4: Serial controller improvement
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1/*
2 * QEMU Epson S1D13744/S1D13745 templates
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 * Written by Andrzej Zaborowski <[email protected]>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 or
10 * (at your option) version 3 of the License.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#define SKIP_PIXEL(to) to += deststep
24#if DEPTH == 8
25# define PIXEL_TYPE uint8_t
26# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
27# define COPY_PIXEL1(to, from) *to ++ = from
28#elif DEPTH == 15 || DEPTH == 16
29# define PIXEL_TYPE uint16_t
30# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
31# define COPY_PIXEL1(to, from) *to ++ = from
32#elif DEPTH == 24
33# define PIXEL_TYPE uint8_t
34# define COPY_PIXEL(to, from) \
35 to[0] = from; to[1] = (from) >> 8; to[2] = (from) >> 16; SKIP_PIXEL(to)
36# define COPY_PIXEL1(to, from) \
37 *to ++ = from; *to ++ = (from) >> 8; *to ++ = (from) >> 16
38#elif DEPTH == 32
39# define PIXEL_TYPE uint32_t
40# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
41# define COPY_PIXEL1(to, from) *to ++ = from
42#else
43# error unknown bit depth
44#endif
45
46#ifdef WORDS_BIGENDIAN
47# define SWAP_WORDS 1
48#endif
49
50static void glue(blizzard_draw_line16_, DEPTH)(PIXEL_TYPE *dest,
51 const uint16_t *src, unsigned int width)
52{
53#if !defined(SWAP_WORDS) && DEPTH == 16
54 memcpy(dest, src, width);
55#else
56 uint16_t data;
57 unsigned int r, g, b;
58 const uint16_t *end = (const void *) src + width;
59 while (src < end) {
60 data = lduw_raw(src ++);
61 b = (data & 0x1f) << 3;
62 data >>= 5;
63 g = (data & 0x3f) << 2;
64 data >>= 6;
65 r = (data & 0x1f) << 3;
66 data >>= 5;
67 COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
68 }
69#endif
70}
71
72static void glue(blizzard_draw_line24mode1_, DEPTH)(PIXEL_TYPE *dest,
73 const uint8_t *src, unsigned int width)
74{
75 /* TODO: check if SDL 24-bit planes are not in the same format and
76 * if so, use memcpy */
77 unsigned int r[2], g[2], b[2];
78 const uint8_t *end = src + width;
79 while (src < end) {
80 g[0] = *src ++;
81 r[0] = *src ++;
82 r[1] = *src ++;
83 b[0] = *src ++;
84 COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[0], g[0], b[0]));
85 b[1] = *src ++;
86 g[1] = *src ++;
87 COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r[1], g[1], b[1]));
88 }
89}
90
91static void glue(blizzard_draw_line24mode2_, DEPTH)(PIXEL_TYPE *dest,
92 const uint8_t *src, unsigned int width)
93{
94 unsigned int r, g, b;
95 const uint8_t *end = src + width;
96 while (src < end) {
97 r = *src ++;
98 src ++;
99 b = *src ++;
100 g = *src ++;
101 COPY_PIXEL1(dest, glue(rgb_to_pixel, DEPTH)(r, g, b));
102 }
103}
104
105/* No rotation */
106static blizzard_fn_t glue(blizzard_draw_fn_, DEPTH)[0x10] = {
107 NULL,
108 /* RGB 5:6:5*/
109 (blizzard_fn_t) glue(blizzard_draw_line16_, DEPTH),
110 /* RGB 6:6:6 mode 1 */
111 (blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
112 /* RGB 8:8:8 mode 1 */
113 (blizzard_fn_t) glue(blizzard_draw_line24mode1_, DEPTH),
114 NULL, NULL,
115 /* RGB 6:6:6 mode 2 */
116 (blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
117 /* RGB 8:8:8 mode 2 */
118 (blizzard_fn_t) glue(blizzard_draw_line24mode2_, DEPTH),
119 /* YUV 4:2:2 */
120 NULL,
121 /* YUV 4:2:0 */
122 NULL,
123 NULL, NULL, NULL, NULL, NULL, NULL,
124};
125
126/* 90deg, 180deg and 270deg rotation */
127static blizzard_fn_t glue(blizzard_draw_fn_r_, DEPTH)[0x10] = {
128 /* TODO */
129 [0 ... 0xf] = NULL,
130};
131
132#undef DEPTH
133#undef SKIP_PIXEL
134#undef COPY_PIXEL
135#undef COPY_PIXEL1
136#undef PIXEL_TYPE
137
138#undef SWAP_WORDS
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