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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: VideoThumbnailDataPrivate class implementation
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*
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*/
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// INCLUDE FILES
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#include <qapplication.h>
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#include <qpixmap.h>
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#include <qtimer.h>
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#include <mpxmediageneraldefs.h>
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#include <vcxmyvideosdefs.h>
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#include "videothumbnaildata_p.h"
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#include "videocollectionwrapper.h"
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#include "videosortfilterproxymodel.h"
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#include "videothumbnailfetcher.h"
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// Maximum thumbnails kept in memory.
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const int THUMBNAIL_CACHE_SIZE = 60;
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// Maximum of thumbnail fetches done at one background fetch round.
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const int THUMBNAIL_BACKGROUND_FETCH_AMOUNT = 20;
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// Milliseconds for the background fetch timer.
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const int THUMBNAIL_BACKGROUND_TIMEOUT = 100;
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// Milliseconds while thumbnail ready events are gathered before they
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// are signaled.
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const int THUMBNAIL_READY_SIGNAL_TIMEOUT = 50;
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// Priority for background thumbnail fetches.
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const int BACKGROUND_FETCH_PRIORITY = 3000;
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/**
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* global qHash function required fo creating hash values for TMPXItemId -keys
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*/
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inline uint qHash(TMPXItemId key)
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{
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QPair<uint, uint> keyPair(key.iId1, key.iId2);
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return qHash(keyPair);
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}
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// ================= MEMBER FUNCTIONS =======================
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//
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::VideoThumbnailDataPrivate()
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// -----------------------------------------------------------------------------
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//
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VideoThumbnailDataPrivate::VideoThumbnailDataPrivate() :
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mThumbnailFetcher(0),
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mDefaultTnVideo(0),
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mDefaultTnCategory(0),
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mCurrentModel(0),
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mCurrentFetchIndex(0),
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mCurrentBackgroundFetchCount(0),
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mBgFetchTimer(0),
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mTbnReportTimer(0),
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mSignalsConnected(false),
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mBackgroundFetchingEnabled(true)
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{
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initialize();
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::~VideoThumbnailDataPrivate()
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// -----------------------------------------------------------------------------
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//
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VideoThumbnailDataPrivate::~VideoThumbnailDataPrivate()
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{
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cleanup();
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::initialize()
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// -----------------------------------------------------------------------------
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//
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int VideoThumbnailDataPrivate::initialize()
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{
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mThumbnailData.setMaxCost(THUMBNAIL_CACHE_SIZE);
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if(!mThumbnailFetcher)
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{
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mThumbnailFetcher = new VideoThumbnailFetcher();
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}
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if(!mBgFetchTimer)
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{
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mBgFetchTimer = new QTimer();
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}
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if(!mTbnReportTimer)
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{
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mTbnReportTimer = new QTimer();
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}
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if(connectSignals() < 0)
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{
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cleanup();
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return -1;
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}
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return 0;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::cleanup()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::cleanup()
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{
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disconnectSignals();
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delete mThumbnailFetcher;
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mThumbnailFetcher = 0;
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freeThumbnailData();
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if(mTbnReportTimer)
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{
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mTbnReportTimer->stop();
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delete mTbnReportTimer;
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mTbnReportTimer = 0;
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}
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if(mBgFetchTimer)
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{
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mBgFetchTimer->stop();
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delete mBgFetchTimer;
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mBgFetchTimer = 0;
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}
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::disconnectSignals()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::disconnectSignals()
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{
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if(mSignalsConnected)
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{
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VideoSortFilterProxyModel *model =
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VideoCollectionWrapper::instance().getModel(VideoCollectionWrapper::EAllVideos);
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if(model)
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{
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disconnect(model->sourceModel(), SIGNAL(modelReady()), this, SLOT(modelChangedSlot()));
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disconnect(model->sourceModel(), SIGNAL(modelChanged()), this, SLOT(modelChangedSlot()));
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}
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disconnect(mThumbnailFetcher, SIGNAL(thumbnailReady( QPixmap , void *, int )),
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this, SLOT(thumbnailReadySlot( QPixmap , void *, int )));
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disconnect(mThumbnailFetcher, SIGNAL(allThumbnailsFetched()),
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this, SLOT(allThumbnailsFetchedSlot()));
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disconnect(mBgFetchTimer, SIGNAL(timeout()), this, SLOT(doBackgroundFetching()));
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disconnect(mTbnReportTimer, SIGNAL(timeout()), this, SLOT(reportThumbnailsReadySlot()));
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}
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mSignalsConnected = false;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::connectSignals()
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// -----------------------------------------------------------------------------
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//
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int VideoThumbnailDataPrivate::connectSignals()
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{
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if(!mSignalsConnected)
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{
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VideoSortFilterProxyModel *model =
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VideoCollectionWrapper::instance().getModel(VideoCollectionWrapper::EAllVideos);
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if(!model)
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return -1;
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if(!connect(mThumbnailFetcher, SIGNAL(thumbnailReady( QPixmap , void *, int )),
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this, SLOT(thumbnailReadySlot( QPixmap , void *, int))) ||
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!connect(mThumbnailFetcher, SIGNAL(allThumbnailsFetched()),
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this, SLOT(allThumbnailsFetchedSlot())) ||
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!connect(model->sourceModel(), SIGNAL(modelReady()), this, SLOT(modelChangedSlot())) ||
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!connect(model->sourceModel(), SIGNAL(modelChanged()), this, SLOT(modelChangedSlot())) ||
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!connect(mBgFetchTimer, SIGNAL(timeout()), this, SLOT(doBackgroundFetching())) ||
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!connect(mTbnReportTimer, SIGNAL(timeout()), this, SLOT(reportThumbnailsReadySlot())))
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{
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return -1;
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}
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QApplication *app = qApp;
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if(!connect(app, SIGNAL(aboutToQuit()), this, SLOT(aboutToQuitSlot())))
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{
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return -1;
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}
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mSignalsConnected = true;
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}
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return 0;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::getThumbnail()
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// -----------------------------------------------------------------------------
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//
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const QIcon* VideoThumbnailDataPrivate::getThumbnail(TMPXItemId mediaId)
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{
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const QIcon *thumbnail = mThumbnailData[mediaId];
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if(!thumbnail)
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{
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return defaultThumbnail(mediaId);
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}
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return thumbnail;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::startFetchingThumbnails()
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// -----------------------------------------------------------------------------
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//
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int VideoThumbnailDataPrivate::startFetchingThumbnails(const QList<QModelIndex> &indexes, int priority)
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{
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if(!mCurrentModel || !mThumbnailFetcher)
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{
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return -1;
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}
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if(indexes.count() == 0)
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{
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return 0;
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}
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mThumbnailFetcher->pauseFetching();
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int fetchCountBefore = mThumbnailFetcher->fetchCount();
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// Fetch the thumbnails
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for(int i = 0; i < indexes.count(); i++)
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{
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startFetchingThumbnail(mCurrentModel->getMediaIdAtIndex(indexes[i]), priority--);
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}
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int started = mThumbnailFetcher->fetchCount() - fetchCountBefore;
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mThumbnailFetcher->continueFetching();
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return started;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::startFetchingThumbnail()
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// -----------------------------------------------------------------------------
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//
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int VideoThumbnailDataPrivate::startFetchingThumbnail(TMPXItemId mediaId, int priority)
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{
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if(!mCurrentModel || !mThumbnailFetcher)
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{
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return -1;
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}
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// Check that it's not fetched before.
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if(mThumbnailData.contains(mediaId))
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{
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return 0;
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}
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QString fileName = mCurrentModel->getMediaFilePathForId(mediaId);
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// object containing media id to be passed throught
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// thumbnail generation process.
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TMPXItemId *internal = new TMPXItemId(mediaId.iId1, mediaId.iId2);
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// Thumbnail fetcher signals into thumbnailReadySlot when thumbnail ready
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if(fileName.length() > 0)
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{
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mThumbnailFetcher->addFetch(fileName, internal, priority);
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}
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return 0;
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::doBackgroundFetching()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::doBackgroundFetching()
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{
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if(!mCurrentModel || !mThumbnailFetcher)
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{
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return;
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}
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if(mCurrentBackgroundFetchCount >= THUMBNAIL_CACHE_SIZE)
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{
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return;
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}
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int maxIndex = mCurrentModel->rowCount();
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if(maxIndex == 0)
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{
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return;
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}
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// Delta to UI index where fetch has been done already.
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int currentDelta = mCurrentBackgroundFetchCount/2;
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// How many will be fetched.
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const int fetchAmount = THUMBNAIL_BACKGROUND_FETCH_AMOUNT/2;
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QList<QModelIndex> indexes;
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// Items after the current fetch index.
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int startIndex = mCurrentFetchIndex+currentDelta;
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int endIndex = mCurrentFetchIndex+currentDelta+fetchAmount;
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getModelIndexes(indexes, startIndex, endIndex);
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// Items before the current fetch index.
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startIndex = mCurrentFetchIndex-currentDelta-fetchAmount;
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endIndex = mCurrentFetchIndex-currentDelta;
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getModelIndexes(indexes, startIndex, endIndex);
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mCurrentBackgroundFetchCount += THUMBNAIL_BACKGROUND_FETCH_AMOUNT;
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int fetchesStarted = startFetchingThumbnails(indexes, BACKGROUND_FETCH_PRIORITY);
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// No thumbnails to fetch, start again.
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if(fetchesStarted == 0)
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{
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continueBackgroundFetch();
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}
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::getModelIndexes()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::getModelIndexes(QList<QModelIndex> &indexes, int startIndex, int endIndex)
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{
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QModelIndex index;
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for(int i = startIndex; i < endIndex; i++)
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{
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if(i >= 0)
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{
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index = mCurrentModel->index(i, 0);
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if(index.isValid())
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{
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indexes.append(index);
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}
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}
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}
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::thumbnailReadySlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::thumbnailReadySlot(QPixmap tnData, void *internal, int error)
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{
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TMPXItemId mediaId(0, 0);
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if(internal)
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{
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mediaId = *(static_cast<TMPXItemId*>(internal));
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delete internal;
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}
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else
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{
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return;
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}
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if(!error && !tnData.isNull())
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{
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mThumbnailData.insert(mediaId, new QIcon(tnData));
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// Gather list of media ids and emit thumbnailReady signals in larger set
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// when timer goes off.
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if(mTbnReportTimer && !mTbnReportTimer->isActive())
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{
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mTbnReportTimer->setSingleShot(true);
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mTbnReportTimer->start(THUMBNAIL_READY_SIGNAL_TIMEOUT);
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}
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// Save the media id for the signal.
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mReadyThumbnailMediaIds.append(mediaId);
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}
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::reportThumbnailsReadySlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::reportThumbnailsReadySlot()
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{
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emit thumbnailsFetched(mReadyThumbnailMediaIds);
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mReadyThumbnailMediaIds.clear();
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::allThumbnailsFetchedSlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::allThumbnailsFetchedSlot()
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{
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continueBackgroundFetch();
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::modelChangedSlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::modelChangedSlot()
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{
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startBackgroundFetching(mCurrentModel, mCurrentFetchIndex);
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::defaultThumbnail()
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// -----------------------------------------------------------------------------
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//
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const QIcon* VideoThumbnailDataPrivate::defaultThumbnail(TMPXItemId mediaId)
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{
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// Is thumbnail for a video or a category.
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if(mediaId.iId2 == KVcxMvcMediaTypeVideo)
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{
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if(!mDefaultTnVideo)
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mDefaultTnVideo = new QIcon(":/icons/default_thumbnail_video.svg");
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return mDefaultTnVideo;
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}
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else
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{
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if(!mDefaultTnCategory)
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mDefaultTnCategory = new QIcon(":/icons/default_thumbnail_collection.svg");
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return mDefaultTnCategory;
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|
432 |
}
|
|
433 |
}
|
|
434 |
|
|
435 |
// -----------------------------------------------------------------------------
|
|
436 |
// VideoThumbnailDataPrivate::removeThumbnail()
|
|
437 |
// -----------------------------------------------------------------------------
|
|
438 |
//
|
|
439 |
bool VideoThumbnailDataPrivate::removeThumbnail(TMPXItemId mediaId)
|
|
440 |
{
|
|
441 |
return mThumbnailData.remove(mediaId);
|
|
442 |
}
|
|
443 |
|
|
444 |
// -----------------------------------------------------------------------------
|
|
445 |
// VideoThumbnailDataPrivate::enableBackgroundFetching()
|
|
446 |
// -----------------------------------------------------------------------------
|
|
447 |
//
|
|
448 |
void VideoThumbnailDataPrivate::enableBackgroundFetching(bool enable)
|
|
449 |
{
|
|
450 |
mBackgroundFetchingEnabled = enable;
|
34
|
451 |
startBackgroundFetching(mCurrentModel, 0);
|
|
452 |
}
|
|
453 |
|
|
454 |
// -----------------------------------------------------------------------------
|
|
455 |
// VideoThumbnailDataPrivate::enableThumbnailCreation()
|
|
456 |
// -----------------------------------------------------------------------------
|
|
457 |
//
|
|
458 |
void VideoThumbnailDataPrivate::enableThumbnailCreation(bool enable)
|
|
459 |
{
|
|
460 |
if(mThumbnailFetcher)
|
|
461 |
mThumbnailFetcher->enableThumbnailCreation(enable);
|
30
|
462 |
}
|
|
463 |
|
|
464 |
// -----------------------------------------------------------------------------
|
|
465 |
// VideoThumbnailDataPrivate::freeThumbnailData()
|
|
466 |
// -----------------------------------------------------------------------------
|
|
467 |
//
|
|
468 |
void VideoThumbnailDataPrivate::freeThumbnailData()
|
|
469 |
{
|
|
470 |
// Stop timers.
|
|
471 |
if(mBgFetchTimer)
|
|
472 |
mBgFetchTimer->stop();
|
|
473 |
|
|
474 |
if(mTbnReportTimer)
|
|
475 |
mTbnReportTimer->stop();
|
|
476 |
|
34
|
477 |
if(mThumbnailFetcher)
|
|
478 |
mThumbnailFetcher->cancelFetches();
|
|
479 |
|
30
|
480 |
// Clear data.
|
|
481 |
mReadyThumbnailMediaIds.clear();
|
|
482 |
mThumbnailData.clear();
|
|
483 |
|
|
484 |
delete mDefaultTnVideo;
|
|
485 |
mDefaultTnVideo = 0;
|
|
486 |
|
|
487 |
delete mDefaultTnCategory;
|
|
488 |
mDefaultTnCategory = 0;
|
|
489 |
}
|
|
490 |
|
|
491 |
// -----------------------------------------------------------------------------
|
|
492 |
// VideoThumbnailDataPrivate::startBackgroundFetching()
|
|
493 |
// -----------------------------------------------------------------------------
|
|
494 |
//
|
34
|
495 |
void VideoThumbnailDataPrivate::startBackgroundFetching(VideoSortFilterProxyModel *model, int fetchIndex)
|
30
|
496 |
{
|
34
|
497 |
if(!mBackgroundFetchingEnabled || !mThumbnailFetcher)
|
30
|
498 |
return;
|
34
|
499 |
|
|
500 |
mThumbnailFetcher->cancelFetches();
|
|
501 |
|
|
502 |
// If model is null, we continue using the current one.
|
|
503 |
if(model)
|
|
504 |
mCurrentModel = model;
|
|
505 |
|
30
|
506 |
mCurrentFetchIndex = fetchIndex;
|
|
507 |
mCurrentBackgroundFetchCount = 0;
|
|
508 |
doBackgroundFetching();
|
|
509 |
}
|
|
510 |
|
|
511 |
// -----------------------------------------------------------------------------
|
|
512 |
// VideoThumbnailDataPrivate::continueBackgroundFetch()
|
|
513 |
// -----------------------------------------------------------------------------
|
|
514 |
//
|
|
515 |
void VideoThumbnailDataPrivate::continueBackgroundFetch()
|
|
516 |
{
|
|
517 |
if(!mBackgroundFetchingEnabled)
|
|
518 |
return;
|
|
519 |
|
|
520 |
if(mBgFetchTimer)
|
|
521 |
{
|
|
522 |
mBgFetchTimer->stop();
|
|
523 |
mBgFetchTimer->setSingleShot(true);
|
|
524 |
mBgFetchTimer->start(THUMBNAIL_BACKGROUND_TIMEOUT);
|
|
525 |
}
|
|
526 |
}
|
|
527 |
|
|
528 |
// -----------------------------------------------------------------------------
|
|
529 |
// VideoThumbnailDataPrivate::aboutToQuitSlot()
|
|
530 |
// -----------------------------------------------------------------------------
|
|
531 |
//
|
|
532 |
void VideoThumbnailDataPrivate::aboutToQuitSlot()
|
|
533 |
{
|
|
534 |
cleanup();
|
|
535 |
}
|
|
536 |
|
|
537 |
// End of file
|