Lv2Instrument.h

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/*
 * Lv2Instrument.h - implementation of LV2 instrument
 *
 * Copyright (c) 2018-2023 Johannes Lorenz <jlsf2013$users.sourceforge.net, $=@>
 *
 * 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 LV2_INSTRUMENT_H
#define LV2_INSTRUMENT_H
 
#include <QString>
#include <array>
 
#include "Instrument.h"
#include "InstrumentView.h"
#include "Lv2ControlBase.h"
#include "Lv2ViewBase.h"
#include "Note.h"
 
// whether to use MIDI vs playHandle
// currently only MIDI works
#define LV2_INSTRUMENT_USE_MIDI
 
namespace lmms
{
 
namespace gui
{
 
class Lv2InsView;
 
}
 
class Lv2Instrument : public Instrument, public Lv2ControlBase
{
        Q_OBJECT
signals:
        void modelChanged();
public:
        /*
                initialization
        */
        Lv2Instrument(InstrumentTrack *instrumentTrackArg,
                 Descriptor::SubPluginFeatures::Key* key);
        ~Lv2Instrument() override;
        void reload();
        void onSampleRateChanged();
 
        /*
                load/save
        */
        void saveSettings(QDomDocument &doc, QDomElement &that) override;
        void loadSettings(const QDomElement &that) override;
        void loadFile(const QString &file) override;
 
        /*
                realtime funcs
        */
        bool hasNoteInput() const override { return Lv2ControlBase::hasNoteInput(); }
#ifdef LV2_INSTRUMENT_USE_MIDI
        bool handleMidiEvent(const MidiEvent &event,
                const TimePos &time = TimePos(), f_cnt_t offset = 0) override;
#else
        void playNote(NotePlayHandle *nph, SampleFrame*) override;
#endif
        void play(SampleFrame* buf) override;
 
        /*
                misc
        */
        gui::PluginView* instantiateView(QWidget *parent) override;
 
private slots:
        void updatePitchRange();
 
private:
        QString nodeName() const override;
 
#ifdef LV2_INSTRUMENT_USE_MIDI
        std::array<int, NumKeys> m_runningNotes = {};
#endif
        void clearRunningNotes();
 
        friend class gui::Lv2InsView;
};
 
 
namespace gui
{
 
 
class Lv2InsView : public InstrumentView, public Lv2ViewBase
{
Q_OBJECT
public:
        Lv2InsView(Lv2Instrument *_instrument, QWidget *_parent);
 
protected:
        void dragEnterEvent(QDragEnterEvent *_dee) override;
        void dropEvent(QDropEvent *_de) override;
        void hideEvent(QHideEvent* event) override;
 
private:
        void modelChanged() override;
};
 
 
} // namespace gui
 
 
} // namespace lmms
 
#endif // LV2_INSTRUMENT_H