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8757cc7c42
Replace all exception throw statements with LOG(RPi*, Fatal) error messages. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2019, Raspberry Pi Ltd
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*
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* geq.cpp - GEQ (green equalisation) control algorithm
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*/
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#include <libcamera/base/log.h>
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#include "../device_status.h"
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#include "../lux_status.h"
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#include "../pwl.h"
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#include "geq.h"
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using namespace RPiController;
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using namespace libcamera;
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LOG_DEFINE_CATEGORY(RPiGeq)
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/*
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* We use the lux status so that we can apply stronger settings in darkness (if
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* necessary).
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*/
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#define NAME "rpi.geq"
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Geq::Geq(Controller *controller)
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: Algorithm(controller)
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{
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}
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char const *Geq::name() const
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{
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return NAME;
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}
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void Geq::read(boost::property_tree::ptree const ¶ms)
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{
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config_.offset = params.get<uint16_t>("offset", 0);
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config_.slope = params.get<double>("slope", 0.0);
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if (config_.slope < 0.0 || config_.slope >= 1.0)
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LOG(RPiGeq, Fatal) << "Geq: bad slope value";
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if (params.get_child_optional("strength"))
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config_.strength.read(params.get_child("strength"));
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}
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void Geq::prepare(Metadata *imageMetadata)
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{
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LuxStatus luxStatus = {};
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luxStatus.lux = 400;
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if (imageMetadata->get("lux.status", luxStatus))
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LOG(RPiGeq, Warning) << "no lux data found";
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DeviceStatus deviceStatus;
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deviceStatus.analogueGain = 1.0; /* in case not found */
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if (imageMetadata->get("device.status", deviceStatus))
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LOG(RPiGeq, Warning)
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<< "no device metadata - use analogue gain of 1x";
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GeqStatus geqStatus = {};
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double strength = config_.strength.empty()
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? 1.0
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: config_.strength.eval(config_.strength.domain().clip(luxStatus.lux));
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strength *= deviceStatus.analogueGain;
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double offset = config_.offset * strength;
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double slope = config_.slope * strength;
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geqStatus.offset = std::min(65535.0, std::max(0.0, offset));
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geqStatus.slope = std::min(.99999, std::max(0.0, slope));
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LOG(RPiGeq, Debug)
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<< "offset " << geqStatus.offset << " slope "
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<< geqStatus.slope << " (analogue gain "
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<< deviceStatus.analogueGain << " lux "
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<< luxStatus.lux << ")";
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imageMetadata->set("geq.status", geqStatus);
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}
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/* Register algorithm with the system. */
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static Algorithm *create(Controller *controller)
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{
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return (Algorithm *)new Geq(controller);
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}
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static RegisterAlgorithm reg(NAME, &create);
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