Subversion Repositories tpanel

/*

 * Copyright (C) 2024 by Andreas Theofilu <andreas@theosys.at>

 *

 * 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, write to the Free Software Foundation,

 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA

 */

#ifndef TQINTERCOM_H

#define TQINTERCOM_H

#include <string>

#include <QObject>

#include <QAudioFormat>

#include <QAbstractSocket>

#include <QAudioSink>

#include <QUdpSocket>

#include <QScopedPointer>

typedef struct INTERCOM_t

{

    std::string ip;         // IP address of panel to connect to

    long rxPort{0};          // Network port number for receiver

    long txPort{0};          // Network port number for transmitter

    int mode{0};            // The mode (0 = talk, 1 = listen, 2 = both)

}INTERCOM_t;

class QAudioSource;

class QBuffer;

class QTimer;

class QTimerEvent;

class TMicrophone : public QIODevice

{

    public:

        TMicrophone();

        ~TMicrophone();

        void start();

        void stop();

        qint64 readData(char *data, qint64 maxlen) override;

        qint64 writeData(const char *data, qint64 len) override;

        qint64 bytesAvailable() const override;

        qint64 size() const override { return mBuffer.size(); }

    protected:

        int8_t uLawEncode(int16_t number);

        int16_t uLawDecode(int8_t number);

    private:

        qint64 mPos{0};

        QByteArray mBuffer;

};

class TQIntercom : public QObject

{

    Q_OBJECT

    public:

        TQIntercom(QObject *parent);

        TQIntercom(QObject *parent, INTERCOM_t ic);

        ~TQIntercom();

        void start();

        void stop();

        void setMicrophoneLevel(int level);

        void setSpeakerLevel(int level);

        void setMute(bool mute);

        void setIntercom(INTERCOM_t ic);

    protected:

        bool connectTalker();   // Talker

        bool spawnServer();     // Listener

        void onInputStateChanged(QAbstractSocket::SocketState socketState);

        void onOutputStateChanged(QAbstractSocket::SocketState socketState);

        void stateChangedMessage(QAbstractSocket::SocketState socketState, bool in);

        void onInputErrorOccurred(QAbstractSocket::SocketError socketError);

        void onOutputErrorOccurred(QAbstractSocket::SocketError socketError);

        void socketErrorMessages(QAbstractSocket::SocketError socketError, const std::string& msg);

        void onReadPendingDatagrams();

        void onRecordPermissionGranted();

        void onMicStateChanged(QAudio::State state);

        int16_t uLawDecode(int8_t number);

        int8_t uLawEncode(int16_t number);

        qreal convertVolume(int volume);

    private:

        INTERCOM_t mIntercom;

        int mMicLevel{100};

        int mSpkLevel{100};

        bool mInitialized{false};

        bool mTalkConnected{false};

        bool mRecordPermissionGranted{false};

        QUdpSocket *mUdpTalker{nullptr};

        QUdpSocket *mUdpListener{nullptr};

        QAudioFormat mAudioFormat;

        QAudioSource *mMicrophone{nullptr}; // Talk --> from mic to remote

        QAudioSink *mRemote{nullptr};       // Listen --> from remote to speaker

        QByteArray mReadBuffer;

        TMicrophone *mMicDevice{nullptr};

        QTimer *mPushTimer{nullptr};

        QTimer *mPullTimer{nullptr};

        QAudioDevice mAudioMicDevice;

};

#endif // TQINTERCOM_H