midi_driver_alsamidi.h

/**************************************************************************/
/*  midi_driver_alsamidi.h                                                */
/**************************************************************************/
/*                         This file is part of:                          */
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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

#ifdef ALSAMIDI_ENABLED

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

#ifdef SOWRAP_ENABLED
#include "../alsa/asound-so_wrap.h"
#else
#include <alsa/asoundlib.h>
#endif

class MIDIDriverALSAMidi : public MIDIDriver {
	Thread thread;
	Mutex mutex;

	struct InputConnection {
		InputConnection() = default;
		InputConnection(int p_device_index, snd_rawmidi_t *p_rawmidi);

		Parser parser;
		snd_rawmidi_t *rawmidi_ptr = nullptr;

		// Read in and parse available data, forwarding complete events to Input.
		void read();
	};

	Vector<InputConnection> connected_inputs;

	SafeFlag exit_thread;

	static void thread_func(void *p_udata);

	void lock() const;
	void unlock() const;

public:
	virtual Error open() override;
	virtual void close() override;

	MIDIDriverALSAMidi();
	virtual ~MIDIDriverALSAMidi();
};

#endif // ALSAMIDI_ENABLED