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/* Copyright (c) 2015, Stanislaw Halik <sthalik@misaki.pl>
* 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 <QTimer>
#include <QMutex>
#include <QMutexLocker>
#include <opencv2/videoio.hpp>
#include "opentrack/camera-names.hpp"
#ifdef __linux
#include <QProcess>
#endif
template<typename tracker>
class camera_dialog
{
#ifdef __linux
public:
void open_camera_settings(cv::VideoCapture *, const QString &camera_name, QMutex *)
{
int idx = camera_name_to_index(camera_name);
QProcess::startDetached("qv4l2", QStringList() << "-d" << ("/dev/video" + QString::number(idx)));
}
#else
cv::VideoCapture fake_capture;
QTimer t;
private:
void delete_capture()
{
fake_capture.open("");
}
public:
void open_camera_settings(cv::VideoCapture* cap, const QString& camera_name, QMutex* camera_mtx)
{
if (cap)
{
QMutexLocker l(camera_mtx);
if (cap->isOpened())
{
cap->set(cv::CAP_PROP_SETTINGS, 1);
return;
}
}
if (t.isActive())
return;
// don't hog the camera capture
if (!t.isSingleShot())
QObject::connect(&t, &QTimer::timeout, [&]() -> void { delete_capture(); });
t.setSingleShot(true);
t.setInterval(3000);
fake_capture = cv::VideoCapture(camera_name_to_index(camera_name));
fake_capture.set(cv::CAP_PROP_SETTINGS, 1);
// HACK: we're not notified when it's safe to close the capture
t.start();
}
#endif
};
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