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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>
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#include <QPixmap>
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#include <QTimer>
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#include <mpxmediageneraldefs.h>
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#include <thumbnailmanager_qt.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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// 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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// Maximum simultaneous thumbnail fetches.
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const int THUMBNAIL_MAX_SIMULTANEOUS_FETCHES = THUMBNAIL_BACKGROUND_FETCH_AMOUNT * 10;
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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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mThumbnailManager(0),
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mDefaultTnVideo(0),
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mDefaultTnCategory(0),
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mCollectionWrapper(VideoCollectionWrapper::instance()),
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mModel(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(!mCollectionWrapper)
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{
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return -1;
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}
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if(!mThumbnailManager)
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{
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mThumbnailManager = new ThumbnailManager();
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mThumbnailManager->setThumbnailSize( ThumbnailManager::ThumbnailMedium );
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mThumbnailManager->setQualityPreference( ThumbnailManager::OptimizeForPerformance );
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}
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mModel = mCollectionWrapper->getModel();
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if(!mModel)
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{
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cleanup();
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return -1;
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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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if(mCollectionWrapper)
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{
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mCollectionWrapper->decreaseReferenceCount();
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mCollectionWrapper = 0;
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}
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disconnectSignals();
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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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delete mThumbnailManager;
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mThumbnailManager = 0;
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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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disconnect(mThumbnailManager, SIGNAL(thumbnailReady( QPixmap , void * , int , int )),
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this, SLOT(thumbnailReadySlot( QPixmap , void * , int , int )));
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disconnect(mModel, SIGNAL(layoutChanged()), this, SLOT(layoutChangedSlot()));
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disconnect(mModel, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
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this, SLOT(rowsInsertedSlot(const QModelIndex &, int, int)));
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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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if(!connect(mThumbnailManager, SIGNAL(thumbnailReady( QPixmap , void * , int , int )),
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this, SLOT(thumbnailReadySlot( QPixmap , void * , int , int ))) ||
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!connect(mModel, SIGNAL(layoutChanged()), this, SLOT(layoutChangedSlot())) ||
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!connect(mModel, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
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this, SLOT(rowsInsertedSlot(const QModelIndex &, int, int))) ||
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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(!mModel || !mThumbnailManager)
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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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// Now we fetch the requested thumbnails with higher priority than any of the current fetches.
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// TODO: Better would be to cancel the current fetches but it causes crashes in 10.1.
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int fetchCountBefore = mFetchList.count();
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// Fetch the thumbnails in ascending priority.
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int startPriority = fetchCountBefore + priority + indexes.count();
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for(int i = 0; i < indexes.count(); i++)
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{
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startFetchingThumbnail(mModel->getMediaIdAtIndex(indexes[i]), startPriority-i);
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}
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return mFetchList.count() - fetchCountBefore;
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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(!mModel || !mThumbnailManager)
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{
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return -1;
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}
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if(mFetchList.count() >= THUMBNAIL_MAX_SIMULTANEOUS_FETCHES)
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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 = mModel->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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int tnId = -1;
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// mThumbnailManager signals into thumbnailReadySlot when thumbnail ready
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if(fileName.length() > 0)
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{
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tnId = mThumbnailManager->getThumbnail(fileName, internal, priority);
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}
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if( tnId != -1 )
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{
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// add to fetching list to indicate we're fetching this tn.
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mFetchList.insert(tnId);
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}
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else
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{
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// tn getting starting failed for some reason
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delete internal;
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}
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return tnId;
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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(!mModel)
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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 = mModel->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 before the current fetch index.
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int startIndex = mCurrentFetchIndex-currentDelta-fetchAmount;
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int endIndex = mCurrentFetchIndex-currentDelta;
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getModelIndexes(indexes, startIndex, endIndex);
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// Items after the current fetch index.
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startIndex = mCurrentFetchIndex+currentDelta;
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endIndex = mCurrentFetchIndex+currentDelta+fetchAmount;
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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 = mModel->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 id, int error)
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{
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// Tn ready, either failed or not it must be removed from the fetch list.
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// It's not stored if it's not found from the list.
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if(!removeFromFetchList(id))
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{
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if(internal)
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delete internal;
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return;
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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::layoutChangedSlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::layoutChangedSlot()
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{
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startBackgroundFetching(mCurrentFetchIndex);
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}
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// -----------------------------------------------------------------------------
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// VideoThumbnailDataPrivate::rowsInsertedSlot()
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// -----------------------------------------------------------------------------
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//
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void VideoThumbnailDataPrivate::rowsInsertedSlot(const QModelIndex & /* parent */, int /* start */, int /* end */)
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{
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startBackgroundFetching(mCurrentFetchIndex);
|
|
447 |
}
|
|
448 |
|
|
449 |
// -----------------------------------------------------------------------------
|
|
450 |
// VideoThumbnailDataPrivate::defaultThumbnail()
|
|
451 |
// -----------------------------------------------------------------------------
|
|
452 |
//
|
|
453 |
const QIcon* VideoThumbnailDataPrivate::defaultThumbnail(TMPXItemId mediaId)
|
|
454 |
{
|
|
455 |
// Is thumbnail for a video or a category.
|
|
456 |
if(mediaId.iId2 == 0)
|
|
457 |
{
|
|
458 |
if(!mDefaultTnVideo)
|
|
459 |
mDefaultTnVideo = new QIcon(":/icons/default_thumbnail_video.svg");
|
|
460 |
return mDefaultTnVideo;
|
|
461 |
}
|
|
462 |
else
|
|
463 |
{
|
|
464 |
if(!mDefaultTnCategory)
|
|
465 |
mDefaultTnCategory = new QIcon(":/icons/default_thumbnail_collection.svg");
|
|
466 |
return mDefaultTnCategory;
|
|
467 |
}
|
|
468 |
}
|
|
469 |
|
|
470 |
// -----------------------------------------------------------------------------
|
|
471 |
// VideoThumbnailDataPrivate::removeThumbnail()
|
|
472 |
// -----------------------------------------------------------------------------
|
|
473 |
//
|
|
474 |
bool VideoThumbnailDataPrivate::removeThumbnail(TMPXItemId mediaId)
|
|
475 |
{
|
|
476 |
return mThumbnailData.remove(mediaId);
|
|
477 |
}
|
|
478 |
|
|
479 |
// -----------------------------------------------------------------------------
|
|
480 |
// VideoThumbnailDataPrivate::enableBackgroundFetching()
|
|
481 |
// -----------------------------------------------------------------------------
|
|
482 |
//
|
|
483 |
void VideoThumbnailDataPrivate::enableBackgroundFetching(bool enable)
|
|
484 |
{
|
|
485 |
mBackgroundFetchingEnabled = enable;
|
|
486 |
startBackgroundFetching(0);
|
|
487 |
}
|
|
488 |
|
|
489 |
// -----------------------------------------------------------------------------
|
|
490 |
// VideoThumbnailDataPrivate::freeThumbnailData()
|
|
491 |
// -----------------------------------------------------------------------------
|
|
492 |
//
|
|
493 |
void VideoThumbnailDataPrivate::freeThumbnailData()
|
|
494 |
{
|
|
495 |
// Stop timers.
|
|
496 |
if(mBgFetchTimer)
|
|
497 |
mBgFetchTimer->stop();
|
|
498 |
|
|
499 |
if(mTbnReportTimer)
|
|
500 |
mTbnReportTimer->stop();
|
|
501 |
|
|
502 |
// Clear data.
|
|
503 |
mFetchList.clear();
|
|
504 |
mReadyThumbnailMediaIds.clear();
|
|
505 |
mThumbnailData.clear();
|
|
506 |
|
|
507 |
delete mDefaultTnVideo;
|
|
508 |
mDefaultTnVideo = 0;
|
|
509 |
|
|
510 |
delete mDefaultTnCategory;
|
|
511 |
mDefaultTnCategory = 0;
|
|
512 |
}
|
|
513 |
|
|
514 |
// -----------------------------------------------------------------------------
|
|
515 |
// VideoThumbnailDataPrivate::removeFromFetchList()
|
|
516 |
// -----------------------------------------------------------------------------
|
|
517 |
//
|
|
518 |
bool VideoThumbnailDataPrivate::removeFromFetchList(int tnId)
|
|
519 |
{
|
|
520 |
if(mFetchList.isEmpty())
|
|
521 |
{
|
|
522 |
return false;
|
|
523 |
}
|
|
524 |
bool removed = mFetchList.remove(tnId);
|
|
525 |
if(mFetchList.isEmpty())
|
|
526 |
{
|
|
527 |
continueBackgroundFetch();
|
|
528 |
}
|
|
529 |
return removed;
|
|
530 |
}
|
|
531 |
|
|
532 |
// -----------------------------------------------------------------------------
|
|
533 |
// VideoThumbnailDataPrivate::startBackgroundFetching()
|
|
534 |
// -----------------------------------------------------------------------------
|
|
535 |
//
|
|
536 |
void VideoThumbnailDataPrivate::startBackgroundFetching(int fetchIndex)
|
|
537 |
{
|
|
538 |
if(!mBackgroundFetchingEnabled)
|
|
539 |
return;
|
|
540 |
|
|
541 |
mCurrentFetchIndex = fetchIndex;
|
|
542 |
mCurrentBackgroundFetchCount = 0;
|
|
543 |
doBackgroundFetching();
|
|
544 |
}
|
|
545 |
|
|
546 |
// -----------------------------------------------------------------------------
|
|
547 |
// VideoThumbnailDataPrivate::continueBackgroundFetch()
|
|
548 |
// -----------------------------------------------------------------------------
|
|
549 |
//
|
|
550 |
void VideoThumbnailDataPrivate::continueBackgroundFetch()
|
|
551 |
{
|
|
552 |
if(!mBackgroundFetchingEnabled)
|
|
553 |
return;
|
|
554 |
|
|
555 |
if(mBgFetchTimer)
|
|
556 |
{
|
|
557 |
mBgFetchTimer->stop();
|
|
558 |
mBgFetchTimer->setSingleShot(true);
|
|
559 |
mBgFetchTimer->start(THUMBNAIL_BACKGROUND_TIMEOUT);
|
|
560 |
}
|
|
561 |
}
|
|
562 |
|
|
563 |
// -----------------------------------------------------------------------------
|
|
564 |
// VideoThumbnailDataPrivate::aboutToQuitSlot()
|
|
565 |
// -----------------------------------------------------------------------------
|
|
566 |
//
|
|
567 |
void VideoThumbnailDataPrivate::aboutToQuitSlot()
|
|
568 |
{
|
|
569 |
cleanup();
|
|
570 |
}
|
|
571 |
|
|
572 |
// End of file
|