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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
#include <chrono>
#include <cstring>
#include <cassert>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include <drm.h>
#include <drm_mode.h>
#include "card.h"
#include "framebuffer.h"
#include "testpat.h"
#include "color.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
namespace kms
{
static void draw_pixel(Framebuffer& buf, unsigned x, unsigned y, RGB color)
{
static RGB c1;
switch (buf.format()) {
case DRM_FORMAT_XRGB8888:
{
uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
*p = color.raw;
break;
}
case DRM_FORMAT_RGB565:
{
uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
*p = color.rgb565();
break;
}
case DRM_FORMAT_UYVY:
{
if ((x & 1) == 0) {
c1 = color;
return;
}
uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
YUV yuv1 = c1.yuv();
YUV yuv2 = color.yuv();
p[0] = (yuv1.u + yuv2.u) / 2;
p[1] = yuv1.y;
p[2] = (yuv1.v + yuv2.v) / 2;
p[3] = yuv2.y;
break;
}
case DRM_FORMAT_YUYV:
{
if ((x & 1) == 0) {
c1 = color;
return;
}
uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
YUV yuv1 = c1.yuv();
YUV yuv2 = color.yuv();
p[0] = yuv1.y;
p[1] = (yuv1.u + yuv2.u) / 2;
p[2] = yuv2.y;
p[3] = (yuv1.v + yuv2.v) / 2;
break;
}
}
}
static void draw_rgb_test_pattern(Framebuffer& fb)
{
unsigned x, y;
unsigned w = fb.width();
unsigned h = fb.height();
const unsigned mw = 20;
const unsigned xm1 = mw;
const unsigned xm2 = w - mw - 1;
const unsigned ym1 = mw;
const unsigned ym2 = h - mw - 1;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
// white margin lines
if (x == xm1 || x == xm2 || y == ym1 || y == ym2)
draw_pixel(fb, x, y, RGB(255, 255, 255));
// white box outlines to corners
else if ((x == 0 || x == w - 1) && (y < ym1 || y > ym2))
draw_pixel(fb, x, y, RGB(255, 255, 255));
// white box outlines to corners
else if ((y == 0 || y == h - 1) && (x < xm1 || x > xm2))
draw_pixel(fb, x, y, RGB(255, 255, 255));
// blue bar on the left
else if (x < xm1 && (y > ym1 && y < ym2))
draw_pixel(fb, x, y, RGB(0, 0, 255));
// blue bar on the top
else if (y < ym1 && (x > xm1 && x < xm2))
draw_pixel(fb, x, y, RGB(0, 0, 255));
// red bar on the right
else if (x > xm2 && (y > ym1 && y < ym2))
draw_pixel(fb, x, y, RGB(255, 0, 0));
// red bar on the bottom
else if (y > ym2 && (x > xm1 && x < xm2))
draw_pixel(fb, x, y, RGB(255, 0, 0));
// inside the margins
else if (x > xm1 && x < xm2 && y > ym1 && y < ym2) {
// diagonal line
if (x == y || w - x == h - y)
draw_pixel(fb, x, y, RGB(255, 255, 255));
// diagonal line
else if (w - x == y || x == h - y)
draw_pixel(fb, x, y, RGB(255, 255, 255));
else {
int t = (x - xm1 - 1) * 3 / (xm2 - xm1 - 1);
unsigned r = 0, g = 0, b = 0;
unsigned c = (y - ym1 - 1) % 256;
switch (t) {
case 0:
r = c;
break;
case 1:
g = c;
break;
case 2:
b = c;
break;
}
draw_pixel(fb, x, y, RGB(r, g, b));
}
// black corners
} else {
draw_pixel(fb, x, y, RGB(0, 0, 0));
}
}
}
}
void draw_test_pattern(Framebuffer& fb)
{
using namespace std::chrono;
auto t1 = high_resolution_clock::now();
draw_rgb_test_pattern(fb);
auto t2 = high_resolution_clock::now();
auto time_span = duration_cast<microseconds>(t2 - t1);
printf("draw took %lu us\n", time_span.count());
}
}
|
