#pragma once

#include "core/effect.hpp"

namespace effector {

// Knocks the red, green and blue planes out of register, either the whole image
// at once or band by band, each band with offsets of its own.
// In a video the channels do not sit still: they sway, shake from frame to
// frame, and a tracking bar rolls down the picture as on a worn tape or an old
// tube. A still picture is rendered exactly as it always was.
// A pure transform: it needs no source images, and leading a chain with
// sources loaded it starts from a crop of a randomly chosen one.
class ChannelSplitEffect : public Effect {
public:
    std::string name() const override { return "channelsplit"; }
    std::string title() const override { return "Channel split"; }
    std::string description() const override {
        return "Knocks the red, green and blue planes out of register, over the whole image or "
               "band by band.";
    }
    const std::vector<ParamSpec>& params() const override;
    bool needsSources() const override { return false; }
    bool animated(const ParamValues& values) const override;

    Image render(const std::vector<Image>& sources, int width, int height, Rng& rng,
                 const ParamValues& values) const override;
    Image renderFrame(const std::vector<Image>& sources, int width, int height, Rng& rng,
                      const ParamValues& values, const FrameTime& frame) const override;
};

}  // namespace effector