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https://git.libcamera.org/libcamera/libcamera.git
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2f46dec949
This avoids a namespace clash with the RPi namespace used by the ipa and pipeline handlers, and cleans up the syntax slightly. There are no functional changes in this commit. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2019, Raspberry Pi (Trading) Limited
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*
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* geq.cpp - GEQ (green equalisation) control algorithm
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*/
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#include "../device_status.h"
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#include "../logging.hpp"
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#include "../lux_status.h"
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#include "../pwl.hpp"
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#include "geq.hpp"
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using namespace RPiController;
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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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#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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throw std::runtime_error("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 *image_metadata)
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{
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LuxStatus lux_status = {};
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lux_status.lux = 400;
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if (image_metadata->Get("lux.status", lux_status))
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RPI_WARN("Geq: no lux data found");
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DeviceStatus device_status = {};
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device_status.analogue_gain = 1.0; // in case not found
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if (image_metadata->Get("device.status", device_status))
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RPI_WARN("Geq: no device metadata - use analogue gain of 1x");
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GeqStatus geq_status = {};
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double strength =
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config_.strength.Empty()
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? 1.0
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: config_.strength.Eval(config_.strength.Domain().Clip(
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lux_status.lux));
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strength *= device_status.analogue_gain;
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double offset = config_.offset * strength;
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double slope = config_.slope * strength;
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geq_status.offset = std::min(65535.0, std::max(0.0, offset));
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geq_status.slope = std::min(.99999, std::max(0.0, slope));
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RPI_LOG("Geq: offset " << geq_status.offset << " slope "
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<< geq_status.slope << " (analogue gain "
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<< device_status.analogue_gain << " lux "
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<< lux_status.lux << ")");
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image_metadata->Set("geq.status", geq_status);
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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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