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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2019, Raspberry Pi Ltd
*
* contrast.h - contrast (gamma) control algorithm
*/
#pragma once
#include <mutex>
#include "../contrast_algorithm.h"
#include "../pwl.h"
namespace RPiController {
/*
* Back End algorithm to appaly correct digital gain. Should be placed after
* Back End AWB.
*/
struct ContrastConfig {
bool ceEnable;
double loHistogram;
double loLevel;
double loMax;
double hiHistogram;
double hiLevel;
double hiMax;
Pwl gammaCurve;
};
class Contrast : public ContrastAlgorithm
{
public:
Contrast(Controller *controller = NULL);
char const *name() const override;
int read(const libcamera::YamlObject ¶ms) override;
void setBrightness(double brightness) override;
void setContrast(double contrast) override;
void initialise() override;
void prepare(Metadata *imageMetadata) override;
void process(StatisticsPtr &stats, Metadata *imageMetadata) override;
private:
ContrastConfig config_;
double brightness_;
double contrast_;
ContrastStatus status_;
std::mutex mutex_;
};
} /* namespace RPiController */
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