Expander.h

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// Copyright (c) 2008-2019 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef OPENSHOT_EXPANDER_AUDIO_EFFECT_H
#define OPENSHOT_EXPANDER_AUDIO_EFFECT_H
 
#include "EffectBase.h"
 
#include "Json.h"
#include "KeyFrame.h"
#include "Enums.h"
 
#include <memory>
#include <string>
 
#include <AppConfig.h>
#include <juce_audio_basics/juce_audio_basics.h>
 
namespace openshot
{
    class Frame;
 
    class Expander : public EffectBase
    {
    private:
        void init_effect_details();
 
 
    public:
        Keyframe threshold;
        Keyframe ratio;
        Keyframe attack;
        Keyframe release;
        Keyframe makeup_gain;
        Keyframe bypass;
 
        juce::AudioBuffer<float> mixed_down_input;
        float xl;
        float yl;
        float xg;
        float yg;
        float control;
 
        float input_level;
        float yl_prev;
 
        float inverse_sample_rate;
        float inverseE;
 
        Expander();
 
        Expander(Keyframe threshold, Keyframe ratio, Keyframe attack,
                 Keyframe release, Keyframe makeup_gain, Keyframe bypass);
 
        float calculateAttackOrRelease(float value);
 
        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;
 
        // Get and Set JSON methods
        std::string Json() const override; 
        void SetJson(const std::string value) override; 
        Json::Value JsonValue() const override; 
        void SetJsonValue(const Json::Value root) override; 
 
        std::string PropertiesJSON(int64_t requested_frame) const override;
    };
 
}
 
#endif