// SPDX-License-Identifier: MIT
// Copyright (C) 2015, The LabSound Authors. All rights reserved.

#ifndef PEAK_COMP_NODE_H
#define PEAK_COMP_NODE_H

// PeakComp ported to LabSound from https://github.com/twobigears/tb_peakcomp
// Copyright (C) 2013, Two Big Ears Ltd (http://twobigears.com)

/*
 Stereo L+R peak compressor with variable knee-smooth, attack, release and makeup gain.
 Varun Nair. varun@twobigears.com

 Inspired by:
 http://www.eecs.qmul.ac.uk/~josh/documents/GiannoulisMassbergReiss-dynamicrangecompression-JAES2012.pdf
 https://ccrma.stanford.edu/~jos/filters/Nonlinear_Filter_Example_Dynamic.htm
 */

#include "LabSound/core/AudioBasicProcessorNode.h"
#include "LabSound/core/AudioParam.h"

namespace lab
{

class PeakCompNode : public lab::AudioBasicProcessorNode
{

    class PeakCompNodeInternal;
    PeakCompNodeInternal * internalNode = nullptr;  // We do not own this!

public:
    PeakCompNode(AudioContext & ac);
    virtual ~PeakCompNode();

    static const char* static_name() { return "PeakComp"; }
    virtual const char* name() const { return static_name(); }
    static AudioNodeDescriptor * desc();

    // Threshold given in dB, default 0
    std::shared_ptr<AudioParam> threshold() const;

    // Ratio, default 1:1
    std::shared_ptr<AudioParam> ratio() const;

    // Attack in ms, default .0001f
    std::shared_ptr<AudioParam> attack() const;

    // Release in ms, default .0001f
    std::shared_ptr<AudioParam> release() const;

    // Makeup gain in dB, default 0
    std::shared_ptr<AudioParam> makeup() const;

    // Knee smoothing (0 = hard, 1 = smooth), default 0
    std::shared_ptr<AudioParam> knee() const;
};
}
#endif