author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 17:09:22 +0300 | |
branch | RCL_3 |
changeset 23 | 4740b34b83ce |
parent 17 | 780c925249c1 |
child 28 | f56ec6ce2732 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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: Extracts metadata from a file |
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* |
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*/ |
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#ifndef CMPXMETADATAEXTRACTOR_H |
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#define CMPXMETADATAEXTRACTOR_H |
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class CMPXMedia; |
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class CMPXCollectionPath; |
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class CMetaDataUtility; |
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class CMPXFileInfoUtility; |
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class CMPXDrmMediaUtility; |
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class MMPXMetadataExtractorObserver; |
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#include <thumbnailmanager.h> |
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#include <thumbnailmanagerobserver.h> |
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/** |
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* Extracts metadata from a file. |
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* |
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* @lib mpxfilehandler.lib |
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*/ |
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class CMPXMetadataExtractor : public CBase, |
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public MThumbnailManagerObserver |
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{ |
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public: |
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/* |
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* Two-Phased Constructor. |
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*@since 3.2.3 |
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*/ |
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IMPORT_C static CMPXMetadataExtractor* NewL( RFs& aFs, |
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RApaLsSession& aAppArc, |
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RPointerArray<CMPXCollectionType>& aTypes ); |
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/* |
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* Virtual Destructor. |
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*@since 3.2.3 |
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*/ |
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virtual ~CMPXMetadataExtractor(); |
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public: // New Functions |
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/* |
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* Create a media object for a file. |
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* @since 3.2.3 |
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* @param aFile a fullpath to the file. |
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* @param aNewProperty on return a new media property will be created. |
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* @param aMetadataOnly extract metadata only or not. Default EFalse |
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*/ |
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IMPORT_C void CreateMediaL( const TDesC& aFile, |
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CMPXMedia*& aNewProperty, |
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TBool aMetadataOnly = EFalse ); |
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/** |
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* Extract album art from a file and add to thumbnail manager. |
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* @since 5.0 |
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* @param aMedia MPX Media object to add album art attribute. |
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* @return error id |
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*/ |
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IMPORT_C TInt ExtractAlbumArtL( CMPXMedia* aMedia ); |
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/* |
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* Create a media object for a file. This is a asynchronous function. |
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* This function will leave with KErrAbort if still processing last request. |
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* Callback function is HandleCreateMediaComplete() |
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* @since 9.2 |
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* @param aFile a fullpath to the file. |
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* @param aObs Metadata Extractor Observer |
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* @param aMetadataOnly extract metadata only or not. Default EFalse |
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*/ |
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IMPORT_C void CreateMediaAsyncL( const TDesC& aFile, |
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MMPXMetadataExtractorObserver* aObs, |
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TBool aMetadataOnly = EFalse ); |
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/** |
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* Cancel request. This will empty the task array and stop the wait loop. This |
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* will cause the CreateMediaL() to finish more quickly. Also, |
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* all outstanding thumbnail requests are cancelled. |
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* @since 9.2 |
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*/ |
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IMPORT_C void CancelRequest(); |
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private: // New Functions: |
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/** |
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* Set default media properties. |
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* @since 3.2.3 |
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* @param aMediaProp media properties to update |
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*/ |
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void SetDefaultL( CMPXMedia& aMediaProp ); |
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/** |
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* Function to go through the metadata entries. |
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* @since 3.2.3 |
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*/ |
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void SetMediaPropertiesL(); |
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/** |
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* Sets other media properties not found from metadata util. |
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* @since 3.2.3 |
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*/ |
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void SetExtMediaPropertiesL(); |
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/** |
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* Checks to see if a container type is supported. |
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* @since 3.2.3 |
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* @param aFile file path. |
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* @param aIndex index to the supported types array. |
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* @return index to the mimetype |
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*/ |
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TInt SupportedContainerTypeL( const TDesC& aFile, TInt aIndex ); |
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// From MThumbnailManagerObserver |
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/** |
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* Preview thumbnail generation or loading is complete. |
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* @since S60 v5.0 |
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* @param aThumbnail An object representing the resulting thumbnail. |
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* @param aId Request ID for the operation |
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*/ |
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void ThumbnailPreviewReady( |
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MThumbnailData& aThumbnail, TThumbnailRequestId aId ); |
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/** |
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* Final thumbnail bitmap generation or loading is complete. |
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* @since S60 v5.0 |
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* @param aError Error code. |
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* @param aThumbnail An object representing the resulting thumbnail. |
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* @param aId Request ID for the operation. |
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*/ |
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void ThumbnailReady( |
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TInt aError, |
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MThumbnailData& aThumbnail, TThumbnailRequestId aId ); |
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/** |
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* Stop the wait loop. |
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*/ |
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void StopWaitLoop(); |
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/** |
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* Cancel timer. |
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*/ |
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void CancelTimeoutTimer(); |
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/** |
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* Callback when the timer times out. |
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*/ |
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static TInt TimeoutTimerCallback(TAny* aPtr); |
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/** |
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* Add album art to media object. |
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* @since 5.0 |
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* @param aMedia |
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*/ |
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void AddMediaAlbumArtL( CMPXMedia& aMedia, |
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const TDesC& aFile ); |
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/** |
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* Check if can send request to TNM or not. |
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* @since 5.0 |
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* |
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*/ |
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void CheckBeforeSendRequest(); |
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/** |
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* Cancel all outstanding thumbnail requests |
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* @since 9.2 |
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* |
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*/ |
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void CancelAllThumbnailRequests(); |
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/** |
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* Create media and set default data. |
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* @since 9.2 |
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* |
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*/ |
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void DoCreateMediaL(); |
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/** |
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* Execute task at index 0. |
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* @since 9.2 |
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* |
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*/ |
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void ExecuteTaskL(); |
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/** |
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* Cancel task timer. |
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*/ |
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void CancelTaskTimer(); |
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/** |
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* Callback when the task timer expires. |
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*/ |
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static TInt TaskTimerCallback(TAny* aPtr); |
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/** |
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* Populate task array |
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* @since 9.2 |
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*/ |
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void AddTasksL(); |
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/** |
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* Opens the file |
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* @since 9.2 |
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* @return system error |
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*/ |
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TInt OpenFile(); |
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/** |
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* Handle task timer expired |
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* @since 9.2 |
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*/ |
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void HandleTaskTimerExpired(); |
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/** |
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* Clean up |
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* @since 9.2 |
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*/ |
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void CleanUp(); |
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0
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private: |
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/** |
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* Private Two-Phased constuctor. |
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* @since 3.2.3 |
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* @param aFs file path. |
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* @param aAppArc address for the session application information. |
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* @param array of supported types |
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*/ |
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CMPXMetadataExtractor( RFs& aFs, RApaLsSession& aAppArc, |
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RPointerArray<CMPXCollectionType>& aTypes ); |
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void ConstructL(); |
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private: // data |
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enum EMetadataExtractorTasks |
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{ |
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ETaskCreateMedia, |
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ETaskAddMetadata, |
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ETaskAddExtMetadata, |
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ETaskAddAlbumArt, |
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ETaskCheckBeforeSend |
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}; |
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CMetaDataUtility* iMetadataUtility; // extract metadata from file |
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CMPXDrmMediaUtility* iDrmMediaUtility; // extra drm data from file |
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CMPXFileInfoUtility* iFileInfoUtil; // extract duration/bitrate etc from file |
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RFs& iFs; |
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RApaLsSession& iAppArc; |
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RPointerArray<CMPXCollectionType>& iSupportedTypes; // not owned |
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CThumbnailManager* iTNManager; |
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CActiveSchedulerWait* iTNSyncWait; // wait loop use to sync thumbnail |
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CPeriodic* iTimer; // backup timer to stop wait loop |
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RArray<TThumbnailRequestId> iArrayTNRequestId; |
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RArray<EMetadataExtractorTasks> iArrayTasks; |
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TBool iCancelled; |
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CPeriodic* iTaskTimer; // timer for task execution |
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MMPXMetadataExtractorObserver* iObs; // metadata extractor obserer |
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TFileName iFileName; |
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RFile iFile; |
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CMPXMedia* iMedia; // ownership transferred |
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TBool iMetadataOnly; |
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TInt iFileOpenError; |
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}; |
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#endif // CMPXMETADATAEXTRACTOR_H |