File indexing completed on 2024-05-05 04:48:36

 /****************************************************************************************
  * Copyright (c) 2013 Matěj Laitl <matej@laitl.cz>                                      *
  *                                                                                      *
  * 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 2 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/>.                           *
  * **************************************************************************************/
 
 #include "Fadeouter.h"
 
 #include <phonon/MediaObject>
 #include <phonon/VolumeFaderEffect>
 
 #include <QTimer>
 
 static const int safetyDelay = 300; // in ms
 
 Fadeouter::Fadeouter( const QPointer<Phonon::MediaObject> &media,
                       const QPointer<Phonon::VolumeFaderEffect> &fader,
                       int fadeOutLength )
     : QObject( fader.data() )
     , m_fader( fader )
 {
     Q_ASSERT( media );
     Q_ASSERT( fader );
     Q_ASSERT( fadeOutLength > 0 );
 
     m_fader->fadeOut( fadeOutLength );
     // add a bit of a second so that the effect is not cut even if there are some delays
     QTimer::singleShot( fadeOutLength + safetyDelay, this, &Fadeouter::slotFinalizeFadeout );
 
     // in case a new track starts playing before the fadeout ends, we skip
     // slotFinalizeFadeout() and go directly to destructor, which resets fader volume
     connect( media.data(), &Phonon::MediaObject::currentSourceChanged, this, &QObject::deleteLater );
 
     // no point in having dangling Fadeouters
     connect( media.data(), &QObject::destroyed, this, &QObject::deleteLater );
 }
 
 Fadeouter::~Fadeouter()
 {
     if( m_fader )
         // warning: phonon-gstreamer bug 313551 (still present in 4.6.2) prevents
         // following call to succeed if a fade is still in progress
         m_fader->fadeIn( safetyDelay ); // fade-in, just in case, be nice to ears
 }
 
 void
 Fadeouter::slotFinalizeFadeout()
 {
     Q_EMIT fadeoutFinished();
     deleteLater();
 }