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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2019, Raspberry Pi (Trading) Limited
*
* lux.hpp - Lux control algorithm
*/
#pragma once
#include <mutex>
#include <libcamera/base/utils.h>
#include "../lux_status.h"
#include "../algorithm.hpp"
// This is our implementation of the "lux control algorithm".
namespace RPiController {
class Lux : public Algorithm
{
public:
Lux(Controller *controller);
char const *name() const override;
void read(boost::property_tree::ptree const ¶ms) override;
void prepare(Metadata *imageMetadata) override;
void process(StatisticsPtr &stats, Metadata *imageMetadata) override;
void setCurrentAperture(double aperture);
private:
// These values define the conditions of the reference image, against
// which we compare the new image.
libcamera::utils::Duration referenceShutterSpeed_;
double referenceGain_;
double referenceAperture_; // units of 1/f
double referenceY_; // out of 65536
double referenceLux_;
double currentAperture_;
LuxStatus status_;
std::mutex mutex_;
};
} // namespace RPiController
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