MidiJack.h

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/*
 * MidiJack.h - MIDI client for Jack
 *
 * Copyright (c) 2015 Shane Ambler <develop/at/shaneware.biz>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_MIDI_JACK_H
#define LMMS_MIDI_JACK_H
 
#include "lmmsconfig.h"
 
#ifdef LMMS_HAVE_JACK
#ifndef LMMS_HAVE_WEAKJACK
#include <jack/jack.h>
#include <jack/midiport.h>
#else
#include <weak_libjack.h>
#endif
 
#include <QThread>
 
#include "MidiClient.h"
 
 
namespace lmms
{
 
constexpr size_t JACK_MIDI_BUFFER_MAX = 64; /* events */
 
class AudioJack;
 
class MidiJack : public QThread, public MidiClientRaw
{
        Q_OBJECT
public:
    MidiJack();
    ~MidiJack() override;
 
    jack_client_t* jackClient();
 
    static QString probeDevice();
 
    inline static QString name()
    {
        return( QT_TRANSLATE_NOOP( "MidiSetupWidget",
            "Jack-MIDI" ) );
    }
 
    void JackMidiWrite(jack_nframes_t nframes);
    void JackMidiRead(jack_nframes_t nframes);
 
 
    inline static QString configSection()
    {
        return "MidiJack";
    }
 
 
protected:
    void sendByte( const unsigned char c ) override;
    void run() override;
 
 
private:
    AudioJack *m_jackAudio;
    jack_client_t *m_jackClient;
    jack_port_t *m_input_port;
    jack_port_t *m_output_port;
    uint8_t m_jack_buffer[JACK_MIDI_BUFFER_MAX * 4];
 
    void JackMidiOutEvent(uint8_t *buf, uint8_t len);
    void lock();
    void unlock();
 
    void getPortInfo( const QString& sPortName, int& nClient, int& nPort );
 
    volatile bool m_quit;
 
};
 
 
} // namespace lmms
 
#endif // LMMS_HAVE_JACK
 
#endif // LMMS_MIDI_JACK_H