libcamera/libcamera.git - libcamera official repository

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Diffstat (limited to 'src/android/jpeg/post_processor_jpeg.h')

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1 files changed, 2 insertions, 4 deletions

/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * agc.hpp - AGC/AEC control algorithm */ #pragma once #include <vector> #include <mutex> #include <libcamera/base/utils.h> #include "../agc_algorithm.hpp" #include "../agc_status.h" #include "../pwl.hpp" // This is our implementation of AGC. // This is the number actually set up by the firmware, not the maximum possible // number (which is 16). #define AGC_STATS_SIZE 15 namespace RPiController { struct AgcMeteringMode { double weights[AGC_STATS_SIZE]; void Read(boost::property_tree::ptree const &params); }; struct AgcExposureMode { std::vector<libcamera::utils::Duration> shutter; std::vector<double> gain; void Read(boost::property_tree::ptree const &params); }; struct AgcConstraint { enum class Bound { LOWER = 0, UPPER = 1 }; Bound bound; double q_lo; double q_hi; Pwl Y_target; void Read(boost::property_tree::ptree const &params); }; typedef std::vector<AgcConstraint> AgcConstraintMode; struct AgcConfig { void Read(boost::property_tree::ptree const &params); std::map<std::string, AgcMeteringMode> metering_modes; std::map<std::string, AgcExposureMode> exposure_modes; std::map<std::string, AgcConstraintMode> constraint_modes; Pwl Y_target; double speed; uint16_t startup_frames; unsigned int convergence_frames; double max_change; double min_change; double fast_reduce_threshold; double speed_up_threshold; std::string default_metering_mode; std::string default_exposure_mode; std::string default_constraint_mode; double base_ev; libcamera::utils::Duration default_exposure_time; double default_analogue_gain; }; class Agc : public AgcAlgorithm { public: Agc(Controller *controller); char const *Name() const override; void Read(boost::property_tree::ptree const &params) override; // AGC handles "pausing" for itself. bool IsPaused() const override; void Pause() override; void Resume() override; unsigned int GetConvergenceFrames() const override; void SetEv(double ev) override; void SetFlickerPeriod(libcamera::utils::Duration flicker_period) override; void SetMaxShutter(libcamera::utils::Duration max_shutter) override; void SetFixedShutter(libcamera::utils::Duration fixed_shutter) override; void SetFixedAnalogueGain(double fixed_analogue_gain) override; void SetMeteringMode(std::string const &metering_mode_name) override; void SetExposureMode(std::string const &exposure_mode_name) override; void SetConstraintMode(std::string const &contraint_mode_name) override; void SwitchMode(CameraMode const &camera_mode, Metadata *metadata) override; void Prepare(Metadata *image_metadata) override; void Process(StatisticsPtr &stats, Metadata *image_metadata) override; private: void updateLockStatus(DeviceStatus const &device_status); AgcConfig config_; void housekeepConfig(); void fetchCurrentExposure(Metadata *image_metadata); void fetchAwbStatus(Metadata *image_metadata); void computeGain(bcm2835_isp_stats *statistics, Metadata *image_metadata, double &gain, double &target_Y); void computeTargetExposure(double gain); bool applyDigitalGain(double gain, double target_Y); void filterExposure(bool desaturate); void divideUpExposure(); void writeAndFinish(Metadata *image_metadata, bool desaturate); libcamera::utils::Duration clipShutter(libcamera::utils::Duration shutter); AgcMeteringMode *metering_mode_; AgcExposureMode *exposure_mode_; AgcConstraintMode *constraint_mode_; uint64_t frame_count_; AwbStatus awb_; struct ExposureValues { ExposureValues(); libcamera::utils::Duration shutter; double analogue_gain; libcamera::utils::Duration total_exposure; libcamera::utils::Duration total_exposure_no_dg; // without digital gain }; ExposureValues current_; // values for the current frame ExposureValues target_; // calculate the values we want here ExposureValues filtered_; // these values are filtered towards target AgcStatus status_; int lock_count_; DeviceStatus last_device_status_; libcamera::utils::Duration last_target_exposure_; double last_sensitivity_; // sensitivity of the previous camera mode // Below here the "settings" that applications can change. std::string metering_mode_name_; std::string exposure_mode_name_; std::string constraint_mode_name_; double ev_; libcamera::utils::Duration flicker_period_; libcamera::utils::Duration max_shutter_; libcamera::utils::Duration fixed_shutter_; double fixed_analogue_gain_; }; } // namespace RPiController


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