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0001 /****************************************************************************
0002 **
0003 ** Copyright (C) 2016 by Sandro S. Andrade <sandroandrade@kde.org>
0004 **
0005 ** This program is free software; you can redistribute it and/or
0006 ** modify it under the terms of the GNU General Public License as
0007 ** published by the Free Software Foundation; either version 2 of
0008 ** the License or (at your option) version 3 or any later version
0009 ** accepted by the membership of KDE e.V. (or its successor approved
0010 ** by the membership of KDE e.V.), which shall act as a proxy
0011 ** defined in Section 14 of version 3 of the license.
0012 **
0013 ** This program is distributed in the hope that it will be useful,
0014 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
0015 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0016 ** GNU General Public License for more details.
0017 **
0018 ** You should have received a copy of the GNU General Public License
0019 ** along with this program.  If not, see <http://www.gnu.org/licenses/>.
0020 **
0021 ****************************************************************************/
0022 
0023 #ifndef MINUET_FLUIDSYNTHSOUNDCONTROLLER_H
0024 #define MINUET_FLUIDSYNTHSOUNDCONTROLLER_H
0025 
0026 #include <interfaces/isoundcontroller.h>
0027 
0028 #include <fluidsynth.h>
0029 
0030 class FluidSynthSoundController : public Minuet::ISoundController
0031 {
0032     Q_OBJECT
0033 
0034     Q_PLUGIN_METADATA(IID "org.kde.minuet.IPlugin" FILE "fluidsynthsoundcontroller.json")
0035     Q_INTERFACES(Minuet::IPlugin)
0036     Q_INTERFACES(Minuet::ISoundController)
0037 
0038 public:
0039     explicit FluidSynthSoundController(QObject *parent = nullptr);
0040     virtual ~FluidSynthSoundController() override;
0041 
0042 public Q_SLOTS:
0043     virtual void setPitch(qint8 pitch) override;
0044     virtual void setVolume(quint8 volume) override;
0045     virtual void setTempo(quint8 tempo) override;
0046 
0047     virtual void prepareFromExerciseOptions(QJsonArray selectedExerciseOptions) override;
0048     virtual void prepareFromMidiFile(const QString &fileName) override;
0049 
0050     virtual void play() override;
0051     virtual void pause() override;
0052     virtual void stop() override;
0053     virtual void reset() override;
0054 
0055 private:
0056     void appendEvent(int channel, short key, short velocity, unsigned int duration);
0057     static void sequencerCallback(unsigned int time, fluid_event_t *event, fluid_sequencer_t *seq,
0058                                   void *data);
0059     void resetEngine();
0060     void deleteEngine();
0061 
0062 private:
0063     fluid_settings_t *m_settings;
0064     fluid_audio_driver_t *m_audioDriver;
0065     fluid_sequencer_t *m_sequencer;
0066     fluid_synth_t *m_synth;
0067     fluid_event_t *m_unregisteringEvent;
0068 
0069     short m_synthSeqID;
0070     short m_callbackSeqID;
0071     static unsigned int m_initialTime;
0072 
0073     QScopedPointer<QList<fluid_event_t *>> m_song;
0074 };
0075 
0076 #endif