c1597f9896
The Raspberry Pi IPA module depends on boost only to parse the JSON tuning data files. As libcamera depends on libyaml, use the YamlParser class to parse those files and drop the dependency on boost. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
90 lines
2.2 KiB
C++
90 lines
2.2 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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int Geq::read(const libcamera::YamlObject ¶ms)
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{
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config_.offset = params["offset"].get<uint16_t>(0);
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config_.slope = params["slope"].get<double>(0.0);
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if (config_.slope < 0.0 || config_.slope >= 1.0) {
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LOG(RPiGeq, Error) << "Bad slope value";
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return -EINVAL;
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}
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if (params.contains("strength")) {
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int ret = config_.strength.read(params["strength"]);
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if (ret)
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return ret;
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}
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return 0;
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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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