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
|
/* Copyright (c) 2012 Patrick Ruoff
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#pragma once
#include "compat/util.hpp"
#include <opencv2/core/core.hpp>
#include <memory>
#include <opencv2/videoio.hpp>
#include <string>
#include <QString>
struct CamInfo
{
CamInfo() : res_x(0), res_y(0), fps(0), idx(-1) {}
int res_x;
int res_y;
int fps;
int idx;
};
class Camera final
{
public:
Camera() : dt_valid(0), dt_mean(0) {}
~Camera();
void start();
void stop();
void restart() { stop(); start(); }
// calls corresponding template methods and reinitializes frame rate calculation
void set_device(const QString& name);
void set_fps(int fps);
void set_res(int x_res, int y_res);
DEFUN_WARN_UNUSED bool get_frame(double dt, cv::Mat* frame);
DEFUN_WARN_UNUSED bool get_info(CamInfo &ret);
CamInfo get_desired() const { return cam_desired; }
QString get_desired_name() const;
QString get_active_name() const;
cv::VideoCapture& operator*() { return *cap; }
const cv::VideoCapture& operator*() const { return *cap; }
cv::VideoCapture* operator->() { return cap.get(); }
const cv::VideoCapture* operator->() const { return cap.get(); }
operator bool() const { return cap && cap->isOpened(); }
private:
DEFUN_WARN_UNUSED bool _get_frame(cv::Mat* frame);
double dt_valid;
double dt_mean;
CamInfo cam_info;
CamInfo cam_desired;
QString desired_name, active_name;
struct camera_deleter final
{
void operator()(cv::VideoCapture* cap)
{
if (cap)
{
if (cap->isOpened())
cap->release();
static const std::default_delete<cv::VideoCapture> deleter;
deleter(cap);
}
}
};
using camera_ptr = std::unique_ptr<cv::VideoCapture, camera_deleter>;
std::unique_ptr<cv::VideoCapture, camera_deleter> cap;
};
|
