Add qemu 2.4.0
[kvmfornfv.git] / qemu / hw / display / milkymist-vgafb_template.h
1 /*
2  *  QEMU model of the Milkymist VGA framebuffer.
3  *
4  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20
21 #if BITS == 8
22 #define COPY_PIXEL(to, r, g, b)                    \
23     do {                                           \
24         *to = rgb_to_pixel8(r, g, b);              \
25         to += 1;                                   \
26     } while (0)
27 #elif BITS == 15
28 #define COPY_PIXEL(to, r, g, b)                    \
29     do {                                           \
30         *(uint16_t *)to = rgb_to_pixel15(r, g, b); \
31         to += 2;                                   \
32     } while (0)
33 #elif BITS == 16
34 #define COPY_PIXEL(to, r, g, b)                    \
35     do {                                           \
36         *(uint16_t *)to = rgb_to_pixel16(r, g, b); \
37         to += 2;                                   \
38     } while (0)
39 #elif BITS == 24
40 #define COPY_PIXEL(to, r, g, b)                    \
41     do {                                           \
42         uint32_t tmp = rgb_to_pixel24(r, g, b);    \
43         *(to++) =         tmp & 0xff;              \
44         *(to++) =  (tmp >> 8) & 0xff;              \
45         *(to++) = (tmp >> 16) & 0xff;              \
46     } while (0)
47 #elif BITS == 32
48 #define COPY_PIXEL(to, r, g, b)                    \
49     do {                                           \
50         *(uint32_t *)to = rgb_to_pixel32(r, g, b); \
51         to += 4;                                   \
52     } while (0)
53 #else
54 #error unknown bit depth
55 #endif
56
57 static void glue(draw_line_, BITS)(void *opaque, uint8_t *d, const uint8_t *s,
58         int width, int deststep)
59 {
60     uint16_t rgb565;
61     uint8_t r, g, b;
62
63     while (width--) {
64         rgb565 = lduw_be_p(s);
65         r = ((rgb565 >> 11) & 0x1f) << 3;
66         g = ((rgb565 >>  5) & 0x3f) << 2;
67         b = ((rgb565 >>  0) & 0x1f) << 3;
68         COPY_PIXEL(d, r, g, b);
69         s += 2;
70     }
71 }
72
73 #undef BITS
74 #undef COPY_PIXEL