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/* 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
#undef NDEBUG
#include <cassert>
#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(-1), idx(-1) {}
int res_x;
int res_y;
int fps;
int idx;
};
class Camera final
{
public:
Camera() : dt_valid(0), dt_mean(0) {}
DEFUN_WARN_UNUSED bool start(int idx, int fps, int res_x, int res_y);
void stop();
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*() { assert(cap); return *cap; }
const cv::VideoCapture& operator*() const { assert(cap); return *cap; }
cv::VideoCapture* operator->() { assert(cap); 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);
};
using camera_ptr = std::unique_ptr<cv::VideoCapture, camera_deleter>;
camera_ptr cap;
};
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