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generated by cgit v1.2.1 (git 2.18.0) at 2024-12-24 03:37:06 +0000
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/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (C) 2023, Raspberry Pi Ltd
 *
 * agc_channel.h - AGC/AEC control algorithm
 */
#pragma once

#include <map>
#include <string>
#include <vector>

#include <libcamera/base/utils.h>

#include "../agc_status.h"
#include "../awb_status.h"
#include "../controller.h"
#include "../pwl.h"

/* This is our implementation of AGC. */

namespace RPiController {

using AgcChannelTotalExposures = std::vector<libcamera::utils::Duration>;

struct AgcMeteringMode {
	std::vector<double> weights;
	int read(const libcamera::YamlObject &params);
};

struct AgcExposureMode {
	std::vector<libcamera::utils::Duration> shutter;
	std::vector<double> gain;
	int read(const libcamera::YamlObject &params);
};

struct AgcConstraint {
	enum class Bound { LOWER = 0,
			   UPPER = 1 };
	Bound bound;
	double qLo;
	double qHi;
	Pwl yTarget;
	int read(const libcamera::YamlObject &params);
};

typedef std::vector<AgcConstraint> AgcConstraintMode;

struct AgcChannelConstraint {
	enum class Bound { LOWER = 0,
			   UPPER = 1 };
	Bound bound;
	unsigned int channel;
	double factor;
	int read(const libcamera::YamlObject &params);
};

struct AgcConfig {
	int read(const libcamera::YamlObject &params);
	std::map<std::string, AgcMeteringMode> meteringModes;
	std::map<std::string, AgcExposureMode> exposureModes;
	std::map<std::string, AgcConstraintMode> constraintModes;
	std::vector<AgcChannelConstraint> channelConstraints;
	Pwl yTarget;
	double speed;
	uint16_t startupFrames;
	unsigned int convergenceFrames;
	double maxChange;
	double minChange;
	double fastReduceThreshold;
	double speedUpThreshold;
	std::string defaultMeteringMode;
	std::string defaultExposureMode;
	std::string defaultConstraintMode;
	double baseEv;
	libcamera::utils::Duration defaultExposureTime;
	double defaultAnalogueGain;
	double stableRegion;
	bool desaturate;
};

class AgcChannel
{
public:
	AgcChannel();