/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2021-2022, Ideas On Board * * agc.h - RkISP1 AGC/AEC mean-based control algorithm */ #pragma once #include <linux/rkisp1-config.h> #include <libcamera/base/span.h> #include <libcamera/base/utils.h> #include <libcamera/geometry.h> #include "algorithm.h" namespace libcamera { namespace ipa::rkisp1::algorithms { class Agc : public Algorithm { public: Agc(); ~Agc() = default; int configure(IPAContext &context, const IPACameraSensorInfo &configInfo) override; void queueRequest(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, const ControlList &controls) override; void prepare(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, rkisp1_params_cfg *params) override; void process(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, const rkisp1_stat_buffer *stats, ControlList &metadata) override; private: void computeExposure(IPAContext &Context, IPAFrameContext &frameContext, double yGain, double iqMeanGain); utils::Duration filterExposure(utils::Duration exposureValue); double estimateLuminance(Span<const uint8_t> expMeans, double gain); double measureBrightness(Span<const uint32_t> hist) const; void fillMetadata(IPAContext &context, IPAFrameContext &frameContext, ControlList &metadata); uint64_t frameCount_; utils::Duration filteredExposure_; }; } /* namespace ipa::rkisp1::algorithms */ } /* namespace libcamera */