speakThread.cpp

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/*************************************************************************
 *   Copyright (C) Markus Knapp                                          *
 *   www.direcs.de                                                       *
 *                                                                       *
 *   This file is part of direcs.                                        *
 *                                                                       *
 *   direcs 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, version 3 of the License.          *
 *                                                                       *
 *   direcs 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 direcs. If not, see <http://www.gnu.org/licenses/>.      *
 *                                                                       *
 *************************************************************************/

#include "speakThread.h"


SpeakThread::SpeakThread()
{
        stopped = false;
        saySomething = false;
        mPhase = 0;

#ifdef Q_OS_LINUX // supported only under linux (no MAC OS, Windoze at the moment)
        // Synchronous playback
        // 0 ms length sound buffer for SynthCallBack
        // default location for espeak-data directory
        // dont allow espeakEVENT_PHONEME events
        espeak_Initialize(AUDIO_OUTPUT_PLAYBACK, 0, NULL,0);
        // set speech rate down to 150 words per minute
        setRate(150);
#endif
}


SpeakThread::~SpeakThread()
{
#ifdef Q_OS_LINUX // supported only under linux (no MAC OS, Windoze at the moment)
        espeak_Terminate();
#endif
        saySomething = false;
        stopped = false;
}


void SpeakThread::stop()
{
#ifdef Q_OS_LINUX // currently supported only under linux (no MAC OS at the moment)
        // check if already speaking
        if (espeak_IsPlaying() == 1)
        {
                // shut up
                espeak_Cancel();
        }
#endif

        stopped = true;
}


void SpeakThread::run()
{
        //
        //  start "threading"...
        //
        while (!stopped)
        {
                // let the thread sleep some time
                // for having more time for the other threads
                msleep(THREADSLEEPTIME);

#ifdef Q_OS_LINUX // supported only under linux (no MAC OS, Windoze at the moment)
                if (saySomething == true)
                {
                        saySomething = false;

                        // remove HTML tags from string (needed for reading messages from the GUI log)
                        textToSpeak = removeHTML(textToSpeak);

                        // speak!
                        espeak_Synth( textToSpeak.toAscii(), textToSpeak.length()+1, 0, POS_CHARACTER, 0, espeakCHARS_AUTO, NULL, NULL );
                        espeak_Synchronize();

                        // let other Slots know that we completed the sentence.
                        emit speechCompleted(mPhase);
                }
#endif

        }
        stopped = false;
}


void SpeakThread::speak(QString text, int phase)
{
#ifdef Q_OS_LINUX // supported only under linux (no MAC OS, Windoze at the moment)
        // store the text in the class member
        textToSpeak = text;

        // store the phase locally
        mPhase = phase;

        // enbale the run method to speak :-)
        saySomething = true;

        // check if already speaking
        if (espeak_IsPlaying() == 1)
        {
                // shut up
                espeak_Cancel();
        }
#else
        Q_UNUSED(text);
        Q_UNUSED(phase);
#endif
}


void SpeakThread::setLanguage(QString language)
{
#ifdef Q_OS_LINUX // joystick support only under linux (no MAC OS, Windoze at the moment)
        espeak_SetVoiceByName(language.toAscii());
#else
        Q_UNUSED(language);
#endif
}


void SpeakThread::setRate(int value)
{
#ifdef Q_OS_LINUX // joystick support only under linux (no MAC OS, Windoze at the moment)
        espeak_SetParameter(espeakRATE, value, 0);
#else
        Q_UNUSED(value);
#endif
}


void SpeakThread::setVoice(unsigned char gender,unsigned char age)
{
#ifdef Q_OS_LINUX // supported only under linux (no MAC OS, Windoze at the moment)
        espeak_VOICE *voice_spec=espeak_GetCurrentVoice();
        voice_spec->gender=gender;
        voice_spec->age = age;
        espeak_SetVoiceByProperties(voice_spec);
#else
        Q_UNUSED(gender);
        Q_UNUSED(age);
#endif
}


QString SpeakThread::removeHTML(QString string)
{
        int start= -1;


        do
        {
                // search for the first HTML "<"
                start = string.indexOf("<");

                if (start != 1)
                {
                        string.remove(start, string.indexOf(">")+1 - start);
                }
        } while (string.contains(">"));
        // to the last HTML ">" found

        return string;
}