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/*************************************************************************/
/*  audio_effect_record.h                                                */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* 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.                */
/*************************************************************************/

#ifndef AUDIOEFFECTRECORD_H
#define AUDIOEFFECTRECORD_H

#include "core/io/marshalls.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/os/thread.h"
#include "editor/import/resource_importer_wav.h"
#include "scene/resources/audio_stream_sample.h"
#include "servers/audio/audio_effect.h"
#include "servers/audio_server.h"

class AudioEffectRecord;

class AudioEffectRecordInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectRecordInstance, AudioEffectInstance);
	friend class AudioEffectRecord;
	Ref<AudioEffectRecord> base;

	bool is_recording;
	Thread *io_thread;
	bool thread_active = false;

	Vector<AudioFrame> ring_buffer;
	Vector<float> recording_data;

	unsigned int ring_buffer_pos;
	unsigned int ring_buffer_mask;
	unsigned int ring_buffer_read_pos;

	void _io_thread_process();
	void _io_store_buffer();
	static void _thread_callback(void *_instance);
	void _init_recording();
	void _update_buffer();
	static void _update(void *userdata);

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

	AudioEffectRecordInstance() {}<--- Member variable 'AudioEffectRecordInstance::is_recording' is not initialized in the constructor.<--- Member variable 'AudioEffectRecordInstance::io_thread' is not initialized in the constructor.<--- Member variable 'AudioEffectRecordInstance::ring_buffer_pos' is not initialized in the constructor.<--- Member variable 'AudioEffectRecordInstance::ring_buffer_mask' is not initialized in the constructor.<--- Member variable 'AudioEffectRecordInstance::ring_buffer_read_pos' is not initialized in the constructor.
	~AudioEffectRecordInstance();
};

class AudioEffectRecord : public AudioEffect {
	GDCLASS(AudioEffectRecord, AudioEffect);

	friend class AudioEffectRecordInstance;

	enum {
		IO_BUFFER_SIZE_MS = 1500
	};

	bool recording_active;
	Ref<AudioEffectRecordInstance> current_instance;

	AudioStreamSample::Format format;

	void ensure_thread_stopped();

protected:
	static void _bind_methods();
	static void debug(uint64_t time_diff, int p_frame_count);

public:
	Ref<AudioEffectInstance> instance() override;
	void set_recording_active(bool p_record);
	bool is_recording_active() const;
	void set_format(AudioStreamSample::Format p_format);
	AudioStreamSample::Format get_format() const;
	Ref<AudioStreamSample> get_recording() const;

	AudioEffectRecord();
};

#endif // AUDIOEFFECTRECORD_H