videocollection/videocollectionwrapper/tsrc/testvideomodel/stub/inc/videocollectionutils.h
author hgs
Fri, 16 Apr 2010 18:13:14 +0300
changeset 36 8aed59de29f9
parent 34 bbb98528c666
child 20 b9e04db066d4
permissions -rw-r--r--
201015
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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:   CVideoCollectionUtils class definition*
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*/
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#ifndef __VIDEOCOLLECTIONUTILS_H__
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#define __VIDEOCOLLECTIONUTILS_H__
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// INCLUDES
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#include <QObject>
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#include <QString>
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#include <QStringList>
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#include <mpxmedia.h>
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class VideoCollectionUtils
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{    
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    /**
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     * disable copy-constructor and assignment operator
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     */
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	Q_DISABLE_COPY(VideoCollectionUtils) 
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public: 
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    /**
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     * Returns singleton instance for this class.
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     * 
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     * @return The singleton instance.
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     */
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    static VideoCollectionUtils& instance();
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    /**
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     * Gets QString value from provided media -object based on attribute provided
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     * 
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     * @param CMPXMedia* pointer to media object from where to get data
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     * @param TMPXAttributeData& attribute to look for
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     * @param QString& wanted value
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     * 
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     * @return bool true data value gotten ok
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     */
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    template<class T>
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    bool mediaValue(const CMPXMedia *media, const TMPXAttributeData& attribute, QString& result)
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    {
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        bool status = false;
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        if( media && media->IsSupported(attribute))
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        {
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            HBufC* valueText = NULL;        
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            valueText = media->ValueText( attribute ).Alloc();
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            if (valueText && valueText->Length() > 0)
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            {
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                // temp QString needed to make sure string is initialized correctly (Error  #424)
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                QString text((QChar*)valueText->Des().Ptr(),valueText->Length());
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                result = text;
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                status = true;
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            }
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            delete valueText;
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        }
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        return status;
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    }
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    /**
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     * Gets typed value from provided media -object based on attribute provided
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     * 
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     * @param CMPXMedia* pointer to media object from where to get data
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     * @param TMPXAttributeData& attribute to look for
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     * @param T& wanted value
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     * 
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     * @return bool true data value gotten ok
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     */
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    template<class T>
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    bool mediaValue(const CMPXMedia *media, const TMPXAttributeData& attribute, T& result)
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    {
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        bool status = false;
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        if(media && media->IsSupported(attribute))
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        {
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            T *pointer = 0;
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            pointer = media->Value<T>(attribute);
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            if(pointer)
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            {
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                result = *pointer;
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                status = true;
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            }
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        }          
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        return status;
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    }
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    /**
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     * Gets typed pointer from provided media -object based on attribute provided
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     * 
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     * @param CMPXMedia* pointer to media object from where to get data
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     * @param TMPXAttributeData& attribute to look for
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     * 
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     * @return T* pointer to wanted data (NULL if does not succeed)
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     */
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    template<class T>
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    T* mediaValuePtr(const CMPXMedia *media, const TMPXAttributeData& attribute)
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    {
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        T *pointer = 0;
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        if(media && media->IsSupported(attribute))
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        {
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            pointer = media->Value<T>(attribute);
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        }          
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        return pointer;
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    }
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    /**
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     * Prepares length string from given value.
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     * 
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     * @param length Length value in seconds.
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     * @return Length as string (for example "1min 45sec").
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     */
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    QString prepareLengthString(quint32 length);
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    /**
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     * prepares length string
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     */
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    const QString prepareShortLengthString(quint32 total);
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    /**
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     * Prepares size string from the given value.
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     * 
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     * @param size Size value in bytes
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     * @return Size as string (for example "450 kB").
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     */
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    QString prepareSizeString(quint32 size);
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public:
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    static QString mPrepareLengthStringReturnValue;
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    static QString mPrepareSizeStringReturnValue;
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private: 
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	/**
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	 * Default constructor
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     */
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    VideoCollectionUtils();	
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	/**
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     * Destructor
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     */
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	~VideoCollectionUtils();	
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};
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#endif  // __VIDEOCOLLECTIONUTILS_H__
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// End of file
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