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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* timer.h - Generic timer
*/
#ifndef __LIBCAMERA_BASE_TIMER_H__
#define __LIBCAMERA_BASE_TIMER_H__
#include <chrono>
#include <stdint.h>
#include <libcamera/base/private.h>
#include <libcamera/base/object.h>
#include <libcamera/base/signal.h>
namespace libcamera {
class Message;
class Timer : public Object
{
public:
Timer(Object *parent = nullptr);
~Timer();
void start(unsigned int msec) { start(std::chrono::milliseconds(msec)); }
void start(std::chrono::milliseconds duration);
void start(std::chrono::steady_clock::time_point deadline);
void stop();
bool isRunning() const;
std::chrono::steady_clock::time_point deadline() const { return deadline_; }
Signal<> timeout;
protected:
void message(Message *msg) override;
private:
void registerTimer();
void unregisterTimer();
bool running_;
std::chrono::steady_clock::time_point deadline_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_BASE_TIMER_H__ */
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