mirror of
https://github.com/LMMS/lmms.git
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162 lines
3.4 KiB
C++
162 lines
3.4 KiB
C++
/*
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* MidiAlsaSeq.h - ALSA-sequencer-client
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*
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* Copyright (c) 2005-2013 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef LMMS_MIDI_ALSA_SEQ_H
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#define LMMS_MIDI_ALSA_SEQ_H
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#include "lmmsconfig.h"
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#ifdef LMMS_HAVE_ALSA
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#include <alsa/asoundlib.h>
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#include <QMap>
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#include <QMutex>
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#include <QThread>
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#include <QTimer>
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#include "MidiClient.h"
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struct pollfd;
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namespace lmms
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{
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class MidiAlsaSeq : public QThread, public MidiClient
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{
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Q_OBJECT
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public:
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MidiAlsaSeq();
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~MidiAlsaSeq() override;
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static QString probeDevice();
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inline static QString name()
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{
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return QT_TRANSLATE_NOOP( "MidiSetupWidget",
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"ALSA-Sequencer (Advanced Linux Sound "
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"Architecture)" );
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}
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inline static QString configSection()
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{
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return "Midialsaseq";
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}
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void processOutEvent( const MidiEvent & _me,
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const TimePos & _time,
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const MidiPort * _port ) override;
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void applyPortMode( MidiPort * _port ) override;
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void applyPortName( MidiPort * _port ) override;
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void removePort( MidiPort * _port ) override;
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// list seq-ports from ALSA
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QStringList readablePorts() const override
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{
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return m_readablePorts;
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}
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QStringList writablePorts() const override
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{
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return m_writablePorts;
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}
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// return name of port which specified MIDI event came from
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QString sourcePortName( const MidiEvent & ) const override;
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// (un)subscribe given MidiPort to/from destination-port
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void subscribeReadablePort( MidiPort * _port,
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const QString & _dest,
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bool _subscribe = true ) override;
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void subscribeWritablePort( MidiPort * _port,
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const QString & _dest,
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bool _subscribe = true ) override;
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void connectRPChanged( QObject * _receiver,
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const char * _member ) override
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{
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connect( this, SIGNAL( readablePortsChanged() ),
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_receiver, _member );
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}
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void connectWPChanged( QObject * _receiver,
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const char * _member ) override
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{
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connect( this, SIGNAL( writablePortsChanged() ),
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_receiver, _member );
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}
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private slots:
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void changeQueueTempo( lmms::bpm_t _bpm );
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void updatePortList();
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private:
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void run() override;
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#ifdef LMMS_HAVE_ALSA
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QMutex m_seqMutex;
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snd_seq_t * m_seqHandle;
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struct Ports
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{
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Ports() { p[0] = -1; p[1] = -1; }
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int & operator[]( const int _i ) { return p[_i]; }
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private: int p[2];
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} ;
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QMap<MidiPort *, Ports> m_portIDs;
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#endif
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int m_queueID;
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volatile bool m_quit;
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QTimer m_portListUpdateTimer;
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QStringList m_readablePorts;
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QStringList m_writablePorts;
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int m_pipe[2];
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signals:
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void readablePortsChanged();
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void writablePortsChanged();
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} ;
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} // namespace lmms
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#endif // LMMS_HAVE_ALSA
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#endif // LMMS_MIDI_ALSA_SEQ_H
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