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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: stub VideoListData class declaration*
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*/
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#include <mpxmediageneraldefs.h>
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#include <mpxmedia.h>
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#include "videodatacontainer.h"
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#include "videocollectionutils.h"
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const TMPXItemId INVALID_ID = TMPXItemId::InvalidId();
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const int INVALID_INDEX = -1;
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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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// -----------------------------------------------------------------------------
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// VideoDataContainer
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// -----------------------------------------------------------------------------
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//
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VideoDataContainer::VideoDataContainer()
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{
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// NOP
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}
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// -----------------------------------------------------------------------------
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// VideoDataContainer
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// -----------------------------------------------------------------------------
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//
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VideoDataContainer::~VideoDataContainer()
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{
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clear();
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clearRemoved();
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}
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// -----------------------------------------------------------------------------
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// clear
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// -----------------------------------------------------------------------------
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//
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void VideoDataContainer::clear()
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{
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QMultiHash<TMPXItemId, QPair<int, CMPXMedia*> >::iterator i = mMediaData.begin();
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while(i != mMediaData.end())
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{
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delete (*i).second;
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++i;
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}
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mMediaData.clear();
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mMediaIds.clear();
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}
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// -----------------------------------------------------------------------------
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// remove
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// -----------------------------------------------------------------------------
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//
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void VideoDataContainer::remove(const TMPXItemId &id)
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{
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QMultiHash<TMPXItemId, QPair<int, CMPXMedia*> >::iterator removeIter = mMediaData.find(id);
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if(removeIter == mMediaData.end())
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{
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return;
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}
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mMediaIds.removeAt(removeIter->first);
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// sync item indexes whose ids exist in id- list after
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// recently removoved.
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decHashIndexesAfter(removeIter->first);
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delete removeIter->second;
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mMediaData.erase(removeIter);
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}
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void VideoDataContainer::decHashIndexesAfter(const int &fromIndex)
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{
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int count = mMediaIds.count();
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QMultiHash<TMPXItemId, QPair<int, CMPXMedia*> >::iterator hashIter;
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for(int i = fromIndex; i < count; ++i)
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{
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hashIter = mMediaData.find(mMediaIds[i]);
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if(hashIter != mMediaData.end())
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{
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hashIter->first--;
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}
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}
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}
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// -----------------------------------------------------------------------------
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// append
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// -----------------------------------------------------------------------------
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//
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void VideoDataContainer::append(CMPXMedia *media)
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{
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TMPXItemId mediaId = TMPXItemId::InvalidId();
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VideoCollectionUtils::instance().mediaValue<TMPXItemId>(media, KMPXMediaGeneralId, mediaId );
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if(mediaId == TMPXItemId::InvalidId())
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{
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// could not get id or id does not match ==> NOP
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return;
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}
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// do not append duplicates
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if(mMediaIds.contains(mediaId))
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{
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return;
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}
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mMediaIds.append(mediaId);
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mMediaData.insert(mediaId, qMakePair( mMediaIds.count() - 1, media));
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}
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// -----------------------------------------------------------------------------
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// fromIndex
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// -----------------------------------------------------------------------------
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//
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CMPXMedia* VideoDataContainer::fromIndex(const int &index) const
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{
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if(index >= 0 && index < mMediaIds.count() && mMediaData.contains(mMediaIds[index]))
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{
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return (mMediaData.find(mMediaIds[index]))->second;
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}
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return 0;
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}
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// -----------------------------------------------------------------------------
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// indexOfId
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// -----------------------------------------------------------------------------
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//
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const int& VideoDataContainer::indexOfId(const TMPXItemId &id) const
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{
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QMultiHash<TMPXItemId, QPair<int, CMPXMedia*> >::const_iterator iter = mMediaData.find(id);
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if(iter != mMediaData.constEnd())
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{
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return iter->first;
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}
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return INVALID_INDEX;
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}
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// -----------------------------------------------------------------------------
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// idFromIndex
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// -----------------------------------------------------------------------------
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//
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TMPXItemId& VideoDataContainer::idFromIndex(const int &index) const
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{
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if(index >= 0 && index < mMediaIds.count())
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{
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return mMediaIds[index];
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}
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return INVALID_ID;
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}
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// -----------------------------------------------------------------------------
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// count
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// -----------------------------------------------------------------------------
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//
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int VideoDataContainer::count() const
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{
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return mMediaData.count();
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}
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// -----------------------------------------------------------------------------
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// markItemsRemoved
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// -----------------------------------------------------------------------------
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//
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const TMPXItemId VideoDataContainer::markItemRemoved(const int &itemIndex)
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{
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// for all provided indexes:
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// - get item address from mMediaData
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// - get item index from mMediaData
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// - remove item from mMediaData, do not deallocate object
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// - remove item's id from mMediaIds -list
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// - append item into mRemovedMedia
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// - append item's id into returned id -list
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TMPXItemId id = TMPXItemId::InvalidId();
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CMPXMedia *media = 0;
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id = idFromIndex(itemIndex);
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media = fromIndex(itemIndex);
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if(id == TMPXItemId::InvalidId() || !media)
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{
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return id;
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}
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if(!mRemovedMedia.contains(id))
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{
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mRemovedMedia[id] = media;
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}
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mMediaData.remove(id);
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mMediaIds.removeAt(itemIndex);
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// sync item indexes after this
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decHashIndexesAfter(itemIndex);
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return id;
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}
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// -----------------------------------------------------------------------------
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// clearRemoved
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// -----------------------------------------------------------------------------
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//
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int VideoDataContainer::clearRemoved(QList<TMPXItemId> *itemIds)
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{
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int count = 0;
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QList<TMPXItemId> ids;
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QList<TMPXItemId>::const_iterator iterEnd;
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if(!itemIds)
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{
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ids = mRemovedMedia.keys();
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}
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else
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{
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ids = *itemIds;
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}
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QList<TMPXItemId>::const_iterator idIter = ids.constBegin();
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QHash<TMPXItemId, CMPXMedia*>::iterator iter;
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while(idIter != ids.constEnd())
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{
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iter = mRemovedMedia.find((*idIter));
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if(iter != mRemovedMedia.end())
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{
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delete (*iter);
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mRemovedMedia.remove((*idIter));
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count++;
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}
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++idIter;
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}
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return count;
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}
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// -----------------------------------------------------------------------------
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// restoreRemovedItems
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// -----------------------------------------------------------------------------
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//
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int VideoDataContainer::restoreRemovedItems(QList<TMPXItemId> *itemIds)
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{
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int count = 0;
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QList<TMPXItemId> ids;
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QList<TMPXItemId>::const_iterator iterEnd;
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if(!itemIds)
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{
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ids = mRemovedMedia.keys();
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}
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else
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{
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ids = *itemIds;
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}
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QList<TMPXItemId>::const_iterator idIter = ids.begin();
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QHash<TMPXItemId, CMPXMedia*>::iterator iter;
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while(idIter != ids.end())
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{
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iter = mRemovedMedia.find((*idIter));
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if(iter != mRemovedMedia.end() && !mMediaData.contains(iter.key()))
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{
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mMediaIds.append(iter.key());
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mMediaData.insert(iter.key(), qMakePair(mMediaIds.count() - 1, iter.value()));
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mRemovedMedia.remove((*idIter));
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count++;
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}
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++idIter;
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}
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return count;
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}
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// -----------------------------------------------------------------------------
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// getRemovedMedia
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// -----------------------------------------------------------------------------
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//
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CMPXMedia* VideoDataContainer::getRemovedMedia(TMPXItemId &itemId)
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{
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QHash<TMPXItemId, CMPXMedia*>::const_iterator itemIter =
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mRemovedMedia.constFind(itemId);
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if(itemIter != mRemovedMedia.constEnd())
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{
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return itemIter.value();
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}
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return 0;
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}
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// end of file
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