File indexing completed on 2024-04-28 04:50:47

 /*
  * abstractmediawidget.cpp
  *
  * Copyright (C) 2010-2012 Christoph Pfister <christophpfister@gmail.com>
  *
  * 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, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include <QCoreApplication>
 
 #include "abstractmediawidget.h"
 
 AbstractMediaWidget::AbstractMediaWidget(QWidget *parent) : QWidget(parent), mediaWidget(NULL)
 {
     playbackStatus = MediaWidget::Idle;
     currentTime = 0;
     totalTime = 0;
     seekable = false;
     currentAudioStream = -1;
     currentSubtitle = -1;
     titleCount = 0;
     currentTitle = -1;
     chapterCount = 0;
     currentChapter = -1;
     angleCount = 0;
     currentAngle = -1;
     dvdMenu = false;
 }
 
 void AbstractMediaWidget::connectToMediaWidget(MediaWidget *mediaWidget_)
 {
     mediaWidget = mediaWidget_;
     addPendingUpdates(PlaybackStatus | CurrentTotalTime | Seekable | Metadata | AudioStreams |
         Subtitles | Titles | Chapters | Angles | DvdMenu | VideoSize);
 }
 
 void AbstractMediaWidget::addPendingUpdates(PendingUpdates pendingUpdatesToBeAdded)
 {
     while (true) {
         int oldValue = pendingUpdates;
         int newValue = (oldValue | pendingUpdatesToBeAdded);
 
         if (!pendingUpdates.testAndSetRelaxed(oldValue, newValue)) {
             continue;
         }
 
         if (oldValue == 0) {
             QCoreApplication::postEvent(this, new QEvent(QEvent::User));
         }
 
         break;
     }
 }
 
 void AbstractMediaWidget::customEvent(QEvent *event)
 {
     Q_UNUSED(event)
 
     while (true) {
         int oldValue = pendingUpdates;
         int lowestPendingUpdate = (oldValue & (~(oldValue - 1)));
         int newValue = (oldValue & (~lowestPendingUpdate));
 
         if (!pendingUpdates.testAndSetRelaxed(oldValue, newValue)) {
             continue;
         }
 
         switch (static_cast<PendingUpdate>(lowestPendingUpdate)) {
         case PlaybackFinished:
             mediaWidget->playbackFinished();
             break;
         case PlaybackStatus:
             if (updatePlaybackStatus())
                 mediaWidget->playbackStatusChanged();
             break;
         case CurrentTotalTime:
             updateCurrentTotalTime();
             mediaWidget->currentTotalTimeChanged();
             break;
         case Seekable:
             updateSeekable();
             mediaWidget->seekableChanged();
             break;
         case Metadata:
             updateMetadata();
             mediaWidget->metadataChanged();
             break;
         case AudioStreams:
             updateAudioStreams();
             mediaWidget->audioStreamsChanged();
             break;
         case Subtitles:
             updateSubtitles();
             mediaWidget->subtitlesChanged();
             break;
         case Titles:
             updateTitles();
             mediaWidget->titlesChanged();
             break;
         case Chapters:
             updateChapters();
             mediaWidget->chaptersChanged();
             break;
         case Angles:
             updateAngles();
             mediaWidget->anglesChanged();
             break;
         case DvdMenu:
             updateDvdMenu();
             mediaWidget->dvdMenuChanged();
             break;
         case VideoSize:
             updateVideoSize();
             mediaWidget->videoSizeChanged();
             break;
         case Nothing:
             break;
         }
 
         if (newValue == 0) {
             break;
         }
     }
 }