audio_driver_dummy.h

/**************************************************************************/
/*  audio_driver_dummy.h                                                  */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#pragma once

#include "servers/audio_server.h"

#include "core/os/mutex.h"
#include "core/os/thread.h"
#include "core/templates/safe_refcount.h"

class AudioDriverDummy : public AudioDriver {
	Thread thread;
	Mutex mutex;

	int32_t *samples_in = nullptr;

	static void thread_func(void *p_udata);

	uint32_t buffer_frames = 4096;
	int32_t mix_rate = -1;
	SpeakerMode speaker_mode = SPEAKER_MODE_STEREO;

	int channels;

	SafeFlag active;
	SafeFlag exit_thread;

	bool use_threads = true;

	static AudioDriverDummy *singleton;

public:
	virtual const char *get_name() const override {
		return "Dummy";
	}

	virtual Error init() override;
	virtual void start() override;
	virtual int get_mix_rate() const override;
	virtual SpeakerMode get_speaker_mode() const override;

	virtual void lock() override;
	virtual void unlock() override;
	virtual void finish() override;

	void set_use_threads(bool p_use_threads);
	void set_speaker_mode(SpeakerMode p_mode);
	void set_mix_rate(int p_rate);

	uint32_t get_channels() const;

	void mix_audio(int p_frames, int32_t *p_buffer);

	static AudioDriverDummy *get_dummy_singleton() { return singleton; }

	AudioDriverDummy();
	~AudioDriverDummy() {}
};