src/ipa/raspberrypi/controller/rpi/dpc.cpp


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/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (C) 2019, Raspberry Pi (Trading) Limited
 *
 * dpc.cpp - DPC (defective pixel correction) control algorithm
 */

#include <libcamera/base/log.h>

#include "dpc.hpp"

using namespace RPiController;
using namespace libcamera;

LOG_DEFINE_CATEGORY(RPiDpc)

// We use the lux status so that we can apply stronger settings in darkness (if
// necessary).

#define NAME "rpi.dpc"

Dpc::Dpc(Controller *controller)
	: Algorithm(controller)
{
}

char const *Dpc::name() const
{
	return NAME;
}

void Dpc::read(boost::property_tree::ptree const &params)
{
	config_.strength = params.get<int>("strength", 1);
	if (config_.strength < 0 || config_.strength > 2)
		throw std::runtime_error("Dpc: bad strength value");
}

void Dpc::prepare(Metadata *imageMetadata)
{
	DpcStatus dpcStatus = {};
	// Should we vary this with lux level or analogue gain? TBD.
	dpcStatus.strength = config_.strength;
	LOG(RPiDpc, Debug) << "strength " << dpcStatus.strength;
	imageMetadata->set("dpc.status", dpcStatus);
}

// Register algorithm with the system.
static Algorithm *create(Controller *controller)
{
	return (Algorithm *)new Dpc(controller);
}
static RegisterAlgorithm reg(NAME, &create);