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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <linux/fb.h>
#include "test.h"
#include "mappedbuffer.h"
using namespace kms;
int main(int argc, char** argv)
{
const char* fbdev = "/dev/fb0";
int r;
int fd = open(fbdev, O_RDWR);
FAIL_IF(fd < 0, "open %s failed\n", fbdev);
struct fb_var_screeninfo var;
r = ioctl(fd, FBIOGET_VSCREENINFO, &var);
FAIL_IF(r, "FBIOGET_VSCREENINFO failed");
struct fb_fix_screeninfo fix;
r = ioctl(fd, FBIOGET_FSCREENINFO, &fix);
FAIL_IF(r, "FBIOGET_FSCREENINFO failed");
void* ptr = mmap(NULL,
var.yres_virtual * fix.line_length,
PROT_WRITE | PROT_READ,
MAP_SHARED, fd, 0);
FAIL_IF(ptr == MAP_FAILED, "mmap failed");
MappedCPUBuffer buf(var.xres_virtual, var.yres_virtual, PixelFormat::XRGB8888);
printf("%s: res %dx%d, virtual %dx%d, line_len %d\n",
fbdev,
var.xres, var.yres,
var.xres_virtual, var.yres_virtual,
fix.line_length);
draw_test_pattern(buf);
memcpy(ptr, buf.map(0), buf.size(0));
close(fd);
return 0;
}
|
