ColorMap.h

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// Copyright (c) 2008-2025 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef OPENSHOT_COLORMAP_EFFECT_H
#define OPENSHOT_COLORMAP_EFFECT_H
 
#include "../EffectBase.h"
#include "../Json.h"
#include "../KeyFrame.h"
#include <QString>
#include <QFile>
#include <QTextStream>
#include <vector>
#include <string>
#include <array>
 
namespace openshot
{

    class ColorMap : public EffectBase
    {
    private:
        enum class LUTType { None, LUT1D, LUT3D };
 
        std::string lut_path;             
        int lut_size;                     
        std::vector<float> lut_data;      
        LUTType lut_type;                 
        bool needs_refresh;               
        std::array<float, 3> lut_domain_min; 
        std::array<float, 3> lut_domain_max; 

        void init_effect_details();

        void load_cube_file();
 
    public:
        Keyframe intensity;               
        Keyframe intensity_r;             
        Keyframe intensity_g;             
        Keyframe intensity_b;             

        ColorMap();

        ColorMap(const std::string &path,
                 const Keyframe &i = Keyframe(1.0),
                 const Keyframe &iR = Keyframe(1.0),
                 const Keyframe &iG = Keyframe(1.0),
                 const Keyframe &iB = Keyframe(1.0));

        std::shared_ptr<openshot::Frame>
        GetFrame(int64_t frame_number) override
        { return GetFrame(std::make_shared<openshot::Frame>(), frame_number); }

        std::shared_ptr<openshot::Frame>
        GetFrame(std::shared_ptr<openshot::Frame> frame,
                 int64_t frame_number) override;
 
        // JSON serialization
        std::string Json() const override;
        Json::Value JsonValue() const override;
        void SetJson(const std::string value) override;
        void SetJsonValue(const Json::Value root) override;

        std::string PropertiesJSON(int64_t requested_frame) const override;
    };
 
} // namespace openshot
 
#endif // OPENSHOT_COLORMAP_EFFECT_H