f357b1bf6e
When encountering errors, the Algorithm::read() function either uses LOG(Fatal) or throws exceptions from the boost property_tree functions. To prepare for replacing boost JSON parse with the YamlParser class, give the Algorithm::read() function the ability to return an error code, and propagate it all the way to the IPA module init() function. All algorithm classes return a hardcoded 0 value for now, subsequent commits will change that. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Tested-by: Naushir Patuck <naush@raspberrypi.com>
66 lines
1.5 KiB
C++
66 lines
1.5 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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* black_level.cpp - black level control algorithm
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*/
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#include <math.h>
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#include <stdint.h>
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#include <libcamera/base/log.h>
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#include "../black_level_status.h"
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#include "black_level.h"
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using namespace RPiController;
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using namespace libcamera;
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LOG_DEFINE_CATEGORY(RPiBlackLevel)
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#define NAME "rpi.black_level"
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BlackLevel::BlackLevel(Controller *controller)
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: Algorithm(controller)
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{
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}
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char const *BlackLevel::name() const
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{
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return NAME;
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}
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int BlackLevel::read(boost::property_tree::ptree const ¶ms)
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{
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uint16_t blackLevel = params.get<uint16_t>(
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"black_level", 4096); /* 64 in 10 bits scaled to 16 bits */
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blackLevelR_ = params.get<uint16_t>("black_level_r", blackLevel);
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blackLevelG_ = params.get<uint16_t>("black_level_g", blackLevel);
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blackLevelB_ = params.get<uint16_t>("black_level_b", blackLevel);
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LOG(RPiBlackLevel, Debug)
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<< " Read black levels red " << blackLevelR_
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<< " green " << blackLevelG_
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<< " blue " << blackLevelB_;
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return 0;
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}
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void BlackLevel::prepare(Metadata *imageMetadata)
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{
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/*
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* Possibly we should think about doing this in a switchMode or
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* something?
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*/
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struct BlackLevelStatus status;
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status.blackLevelR = blackLevelR_;
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status.blackLevelG = blackLevelG_;
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status.blackLevelB = blackLevelB_;
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imageMetadata->set("black_level.status", 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 new BlackLevel(controller);
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}
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static RegisterAlgorithm reg(NAME, &create);
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