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    /*=====================================================================
    
    QGroundControl Open Source Ground Control Station
    
    (c) 2009, 2010 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
    
    This file is part of the QGROUNDCONTROL project
    
        QGROUNDCONTROL 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.
    
        QGROUNDCONTROL 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 QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
    
    ======================================================================*/
    
    /**
     * @file
     *   @brief Implementation of audio output
     *
     *   @author Lorenz Meier <mavteam@student.ethz.ch>
    
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     *   @author Thomas Gubler <thomasgubler@gmail.com>
    
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     *
     */
    
    #include <QApplication>
    #include <QSettings>
    #include <QDebug>
    
    
    #include "GAudioOutput.h"
    #include "QGCApplication.h"
    #include "QGC.h"
    
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    IMPLEMENT_QGC_SINGLETON(GAudioOutput, GAudioOutput)
    
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    const char* GAudioOutput::_mutedKey = "AudioMuted";
    
    
    GAudioOutput::GAudioOutput(QObject *parent) :
        QGCSingleton(parent),
    
        muted(false),
        thread(new QThread()),
        worker(new QGCAudioWorker())
    
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    {
    
        QSettings settings;
        
        muted = settings.value(_mutedKey, false).toBool();
        muted |= qgcApp()->runningUnitTests();
    
        worker->moveToThread(thread);
    
        connect(this, &GAudioOutput::textToSpeak, worker, &QGCAudioWorker::say);
    
        connect(thread, &QThread::finished, thread, &QObject::deleteLater);
        connect(thread, &QThread::finished, worker, &QObject::deleteLater);
    
        thread->start();
    
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    }
    
    GAudioOutput::~GAudioOutput()
    {
    
        thread->quit();
    
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    }
    
    
    void GAudioOutput::mute(bool mute)
    {
    
        QSettings settings;
        
    
        settings.setValue(_mutedKey, mute);
        
        emit mutedChanged(mute);
    
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    }
    
    bool GAudioOutput::isMuted()
    {
    
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    }
    
    
    bool GAudioOutput::say(const QString& text, int severity)
    
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    {
    
        if (!muted) {
            emit textToSpeak(text, severity);
        }
    
        return true;
    
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    }