#ifndef AUDIOEFFECTEQ_H
#define AUDIOEFFECTEQ_H


#include "servers/audio/audio_effect.h"
#include "servers/audio/effects/eq.h"

class AudioEffectEQ;

class AudioEffectEQInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectEQInstance,AudioEffectInstance)
friend class AudioEffectEQ;
	Ref<AudioEffectEQ> base;

	Vector<EQ::BandProcess> bands[2];
	Vector<float> gains;
public:

	virtual void process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count);

};


class AudioEffectEQ : public AudioEffect {
	GDCLASS(AudioEffectEQ,AudioEffect)

friend class AudioEffectEQInstance;

	EQ eq;
	Vector<float> gain;
	Map<StringName,int> prop_band_map;
	Vector<String> band_names;

protected:
	bool _set(const StringName& p_name, const Variant& p_value);
	bool _get(const StringName& p_name,Variant &r_ret) const;
	void _get_property_list( List<PropertyInfo> *p_list) const;



	static void _bind_methods();
public:


	Ref<AudioEffectInstance> instance();
	void set_band_gain_db(int p_band,float p_volume);
	float get_band_gain_db(int p_band) const;
	int get_band_count() const;

	AudioEffectEQ(EQ::Preset p_preset=EQ::PRESET_6_BANDS);
};


class AudioEffectEQ6 : public AudioEffectEQ {
	GDCLASS(AudioEffectEQ6,AudioEffectEQ)
public:
	AudioEffectEQ6() : AudioEffectEQ(EQ::PRESET_6_BANDS) {}
};

class AudioEffectEQ10 : public AudioEffectEQ {
	GDCLASS(AudioEffectEQ10,AudioEffectEQ)
public:
	AudioEffectEQ10() : AudioEffectEQ(EQ::PRESET_10_BANDS) {}
};

class AudioEffectEQ21 : public AudioEffectEQ {
	GDCLASS(AudioEffectEQ21,AudioEffectEQ)
public:
	AudioEffectEQ21() : AudioEffectEQ(EQ::PRESET_21_BANDS) {}
};

#endif // AUDIOEFFECTEQ_H