[GoogleSpeechAPI]mainwidget

// Init Speech Input
void mainWidget::initializeAudioInput()
{
        speechInput_AudioFormat.setFrequency(16000);
        speechInput_AudioFormat.setChannels(1);
        speechInput_AudioFormat.setSampleSize(16);
        speechInput_AudioFormat.setSampleType(QAudioFormat::SignedInt);
        speechInput_AudioFormat.setByteOrder(QAudioFormat::LittleEndian);
        speechInput_AudioFormat.setCodec("audio/pcm");

        speechInput_AudioDeviceInfo = QAudioDeviceInfo::defaultInputDevice();

        speechInput_AudioInfo  = new AudioInfo(speechInput_AudioFormat, this, "./data/tmp/speechInput.wav");
        connect(speechInput_AudioInfo, SIGNAL(update()), SLOT(refreshRender()));

        //createAudioInput();
}

// Create Audio Input
void mainWidget::createAudioInput()
{
        speechInput_AudioInput = new QAudioInput(speechInput_AudioDeviceInfo, speechInput_AudioFormat, this);
        speechInput_AudioInfo->start();
        speechInput_AudioInput->start(speechInput_AudioInfo);
}

// Stop Audio Input
void mainWidget::stopAudioInput()
{
        speechInput_AudioInput->stop();
        speechInput_AudioInfo->stop();

        speechInput_AudioInput->deleteLater();
}

// Refresh Render
void mainWidget::refreshRender()
{
        ui.widget_SpeechRender->setLevel(speechInput_AudioInfo->level());
        ui.widget_SpeechRender->repaint();
}

// Send Request
void mainWidget::flacEncoderFinished(int exitCode, QProcess::ExitStatus exitStatus)
{
        if (!exitCode)
        {
                QByteArray flacData = flacEncoder->readAll();
                protocol->Request_SPEECH(flacData);
        }
        flacEncoder->deleteLater();
}

// Speech Input Button - Start Speech
void mainWidget::on_pushButton_Speech_clicked()
{
        ui.frame_Speech->show();
        ui.textEdit_Input->setReadOnly(true);
        createAudioInput();
        QTimer::singleShot(5000,this,SLOT(on_pushButton_SpeechCancel_clicked()));
}

// Speech Input Button - Stop Speech
// Call flacEncoder
void mainWidget::on_pushButton_SpeechCancel_clicked()
{
        if (!ui.frame_Speech->isVisible())
        {
                return;
        }
        ui.frame_Speech->hide();

        stopAudioInput();
        //delete speechInput_AudioInput;

        ui.label_Speech_Waiting->setText(QString("?????????"));
        ui.frame_Speech_Waiting->show();

        QString program = "./lib/flac.exe";

        /*
         *      flac.exe -c --totally-silent -f -8 test.wav
         */
        QStringList arguments;
        arguments << "--totally-silent" << "-c" << "-f" << "-8" << QApplication::applicationDirPath() + "/data/tmp/speechInput.wav";

        flacEncoder = new QProcess(this);
        flacEncoder->start(program, arguments);
        connect(flacEncoder,SIGNAL(finished(int,QProcess::ExitStatus)),this,SLOT(flacEncoderFinished(int, QProcess::ExitStatus)));
}