/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2021, Ideas On Board * * ipu3_agc.h - IPU3 AGC/AEC control algorithm */ #ifndef __LIBCAMERA_IPU3_AGC_H__ #define __LIBCAMERA_IPU3_AGC_H__ #include <array> #include <unordered_map> #include <linux/intel-ipu3.h> #include <libcamera/geometry.h> #include "libipa/algorithm.h" namespace libcamera { class IPACameraSensorInfo; namespace ipa::ipu3 { class IPU3Agc : public Algorithm { public: IPU3Agc(); ~IPU3Agc() = default; void initialise(struct ipu3_uapi_grid_config &bdsGrid, const IPACameraSensorInfo &sensorInfo); void process(const ipu3_uapi_stats_3a *stats, uint32_t &exposure, uint32_t &gain); bool converged() { return converged_; } bool updateControls() { return updateControls_; } /* \todo Use a metadata exchange between IPAs */ double gamma() { return gamma_; } private: void processBrightness(const ipu3_uapi_stats_3a *stats); void filterExposure(); void lockExposureGain(uint32_t &exposure, uint32_t &gain); struct ipu3_uapi_grid_config aeGrid_; uint64_t frameCount_; uint64_t lastFrame_; bool converged_; bool updateControls_; double iqMean_; double gamma_; double lineDuration_; double maxExposureTime_; double prevExposure_; double prevExposureNoDg_; double currentExposure_; double currentExposureNoDg_; }; } /* namespace ipa::ipu3 */ } /* namespace libcamera */ #endif /* __LIBCAMERA_IPU3_AGC_H__ */