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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2019, Raspberry Pi Ltd
*
* lux.h - Lux control algorithm
*/
#pragma once
#include <mutex>
#include <libcamera/base/utils.h>
#include "../lux_status.h"
#include "../algorithm.h"
/* This is our implementation of the "lux control algorithm". */
namespace RPiController {
class Lux : public Algorithm
{
public:
Lux(Controller *controller);
char const *name() const override;
int read(const libcamera::YamlObject ¶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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