lsc_base.h

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2026 Ideas on Board Oy
 *
 * Base classes and types for LSC algorithm implementations
 */
 
#pragma once
 
#include <map>
#include <span>
#include <stdint.h>
#include <string>
#include <vector>
 
#include <libcamera/geometry.h>
 
#include "libcamera/internal/value_node.h"
 
#include "interpolator.h"
 
namespace libcamera {
 
namespace ipa {
 
struct LscDescriptor {
    std::vector<std::string> keys;
    unsigned int numHSamples;
    unsigned int numVSamples;
    Size sensorSize;
};
 
class LscImplementation
{
public:
    using Components = std::map<std::string, std::vector<float>, std::less<>>;
    using ComponentsMap = std::map<unsigned int, Components>;
 
    virtual ~LscImplementation() {}
 
    virtual int parseLscData(const ValueNode &tuningData,
                 const LscDescriptor &descriptor) = 0;
 
    virtual ComponentsMap
    sampleForCrop(const Rectangle &cropRectangle,
              std::span<const double> xPos, std::span<const double> yPos) = 0;
};
 
} /* namespace ipa */
 
} /* namespace libcamera */