tqtaudioin.h

/***************************************************************************
 *   Copyright (C) 2015-2021 by Tomasz Bojczuk                             *
 *   seelook@gmail.com                                                     *
 *                                                                         *
 *   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 3 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.  If not, see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/

#ifndef TAUDIOIN_H
#define TAUDIOIN_H

#include "tcommonlistener.h"
#include <QtCore/qiodevice.h>
#include <QtCore/qtimer.h>
#include <QtMultimedia/qaudiodevice.h>
#include <QtMultimedia/qmediarecorder.h>

class QAudioInput;
class QIODevice;
class TaudioParams;
class TaudioBuffer;
class QTimer;

class TtouchHandler : public QObject
{
    Q_OBJECT
public:
    TtouchHandler(TcommonListener *sniffer);

    /**
     * Stops touch timer
     */
    void skip() { m_touchTimer->stop(); }

    void stopHandling();
    void startHandling();

protected:
    virtual bool eventFilter(QObject *obj, QEvent *event);
    void touchTimerSlot();

private:
    bool m_touched = false;
    QTimer *m_touchTimer;
    TcommonListener *m_sniffer;
    bool m_installed;
};

/**
 * Audio input class for Nootka, based on Qt audio (Qt multimedia)
 */
class NOOTKASOUND_EXPORT TaudioIN : public TcommonListener
{
    Q_OBJECT

public:
    explicit TaudioIN(TaudioParams *params, QObject *parent = nullptr);
    ~TaudioIN();

    /**
     * Keeps static pointer of TaudioIN instance. static inCallBack uses it to has access.
     */
    static TaudioIN *instance() { return m_instance; }
    static QString inputName() { return m_deviceName; }

    /**
     * Returns list of audio input devices filtered by template audio format.
     */
    static QStringList getAudioDevicesList();

    void updateAudioParams();

    void stopDevice();
    void startDevice();

    /**
     * Stops handling touch events  to suspend sniffing
     */
    void stopTouchHandle() { m_touchHandler->stopHandling(); }
    void startTouchHandle() { m_touchHandler->startHandling(); }

public slots:
    virtual void startListening();
    virtual void stopListening();

protected slots:
    void bufferReady(const char *data, qint64 &dataLenght);
    void stateChangedSlot(QMediaRecorder::RecorderState s);

private:
    /**
     * Deletes existing @p m_audioIN (when names are different) and creates a new one
     */
    void createInputDevice();

private:
    static TaudioIN *m_instance;
    static QString m_deviceName;
    TaudioParams *m_audioParams;
    QAudioInput *m_audioIN = nullptr;
    QAudioDevice m_deviceInfo;
    TaudioBuffer *m_inBuffer = nullptr;
    QMediaRecorder *m_mediaIN = nullptr;
    TtouchHandler *m_touchHandler;
};

#endif // TAUDIOIN_H