1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* video output handling using plugin_lib
* (C) Gražvydas "notaz" Ignotas, 2011
*
* This work is licensed under the terms of any of these licenses
* (at your option):
* - GNU GPL, version 2 or later.
* - GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#include "gpu.h"
#include "cspace.h"
#include "../../frontend/plugin_lib.h"
static const struct rearmed_cbs *cbs;
static void *screen_buf;
int vout_init(void)
{
return 0;
}
int vout_finish(void)
{
return 0;
}
static void check_mode_change(void)
{
static uint32_t old_status;
static int old_h;
// width|rgb24 change?
if ((gpu.status.reg ^ old_status) & ((7<<16)|(1<<21)) || gpu.screen.h != old_h)
{
old_status = gpu.status.reg;
old_h = gpu.screen.h;
screen_buf = cbs->pl_vout_set_mode(gpu.screen.hres, gpu.screen.h,
(gpu.status.rgb24 && !cbs->only_16bpp) ? 24 : 16);
}
}
static void blit(void)
{
int x = gpu.screen.x & ~1; // alignment needed by blitter
int y = gpu.screen.y;
int w = gpu.screen.w;
int h = gpu.screen.h;
uint16_t *vram = gpu.vram;
int stride = gpu.screen.hres;
int fb_offs, doffs;
uint8_t *dest;
fb_offs = y * 1024 + x;
dest = (uint8_t *)screen_buf;
// only do centering, at least for now
doffs = (stride - w) / 2 & ~1;
if (gpu.status.rgb24)
{
if (cbs->only_16bpp) {
dest += doffs * 2;
for (; h-- > 0; dest += stride * 2, fb_offs += 1024)
{
fb_offs &= 1024*512-1;
bgr888_to_rgb565(dest, vram + fb_offs, w * 3);
}
}
else {
dest += (doffs / 8) * 24;
for (; h-- > 0; dest += stride * 3, fb_offs += 1024)
{
fb_offs &= 1024*512-1;
bgr888_to_rgb888(dest, vram + fb_offs, w * 3);
}
}
}
else
{
dest += doffs * 2;
for (; h-- > 0; dest += stride * 2, fb_offs += 1024)
{
fb_offs &= 1024*512-1;
bgr555_to_rgb565(dest, vram + fb_offs, w * 2);
}
}
screen_buf = cbs->pl_vout_flip();
}
void vout_update(void)
{
check_mode_change();
if (cbs->pl_vout_raw_flip)
cbs->pl_vout_raw_flip(gpu.screen.x, gpu.screen.y);
else
blit();
}
long GPUopen(void **unused)
{
gpu.frameskip.active = 0;
gpu.frameskip.frame_ready = 1;
cbs->pl_vout_open();
screen_buf = cbs->pl_vout_flip();
return 0;
}
long GPUclose(void)
{
cbs->pl_vout_close();
return 0;
}
void vout_set_config(const struct rearmed_cbs *cbs_)
{
cbs = cbs_;
}
// vim:shiftwidth=2:expandtab
|
