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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2019, Raspberry Pi (Trading) Limited
*
* alsc.hpp - ALSC (auto lens shading correction) control algorithm
*/
#pragma once
#include <mutex>
#include <condition_variable>
#include <thread>
#include "../algorithm.hpp"
#include "../alsc_status.h"
namespace RPiController {
// Algorithm to generate automagic LSC (Lens Shading Correction) tables.
struct AlscCalibration {
double ct;
double table[ALSC_CELLS_X * ALSC_CELLS_Y];
};
struct AlscConfig {
// Only repeat the ALSC calculation every "this many" frames
uint16_t frame_period;
// number of initial frames for which speed taken as 1.0 (maximum)
uint16_t startup_frames;
// IIR filter speed applied to algorithm results
double speed;
double sigma_Cr;
double sigma_Cb;
double min_count;
uint16_t min_G;
double omega;
uint32_t n_iter;
double luminance_lut[ALSC_CELLS_X * ALSC_CELLS_Y];
double luminance_strength;
std::vector<AlscCalibration> calibrations_Cr;
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