#ifndef AUDIO_EFFECT_CAPTURE_H
#define AUDIO_EFFECT_CAPTURE_H

/*************************************************************************/
/*  audio_effect_capture.h                                               */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "core/config/engine.h"
#include "core/containers/pool_vector.h"
#include "core/containers/ring_buffer.h"
#include "core/math/audio_frame.h"
#include "core/object/reference.h"
#include "servers/audio/audio_effect.h"
#include "servers/audio_server.h"

class AudioEffectCapture;

class AudioEffectCaptureInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectCaptureInstance, AudioEffectInstance);
	friend class AudioEffectCapture;
	Ref<AudioEffectCapture> base;

public:
	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count);
	virtual bool process_silence() const;
};

class AudioEffectCapture : public AudioEffect {
	GDCLASS(AudioEffectCapture, AudioEffect)
	friend class AudioEffectCaptureInstance;

	RingBuffer<AudioFrame> buffer;
	uint64_t discarded_frames;
	uint64_t pushed_frames;
	float buffer_length_seconds;
	bool buffer_initialized;

protected:
	static void _bind_methods();

public:
	AudioEffectCapture() {
		discarded_frames = 0;
		pushed_frames = 0;
		buffer_length_seconds = 0.1f;
		buffer_initialized = false;
	}
	virtual Ref<AudioEffectInstance> instance();

	void set_buffer_length(float p_buffer_length_seconds);
	float get_buffer_length();

	bool can_get_buffer(int p_frames) const;
	PoolVector2Array get_buffer(int p_len);
	void clear_buffer();

	int get_frames_available() const;
	int64_t get_discarded_frames() const;
	int get_buffer_length_frames() const;
	int64_t get_pushed_frames() const;
};

#endif // AUDIO_EFFECT_CAPTURE_H