author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:28:59 +0200 | |
changeset 23 | 74c9f037fd5d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 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: Thumbnail storage interface |
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* |
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*/ |
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/** |
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* @internal reviewed 30/07/2007 by Simon Brooks |
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*/ |
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#ifndef M_GLXTNSTORAGE_H |
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#define M_GLXTNSTORAGE_H |
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// INCLUDES |
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#include <e32std.h> |
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#include <glxmediaid.h> |
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#include "glxtnstd.h" |
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class CGlxtnFileInfo; |
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// CLASS DECLARATION |
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/** |
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* Interface for thumbnail persistent storage. |
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* |
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* @ingroup glx_thumbnail_creator |
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*/ |
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class MGlxtnThumbnailStorage |
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{ |
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public: |
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/** |
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* Start asynchronous loading of thumbnail data. |
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* @param aData Buffer pointer for the loaded data. Memory is allocated |
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internally and ownership passed to the caller. |
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* @param aFormat Format of the thumbnail in aData. |
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* @param aId Media item ID. |
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* @param aFileInfo File info for media item. |
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* @param aSize Requested thumbnail size. |
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* @param aStatus Request status for the asynchronous operation. |
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*/ |
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virtual void LoadThumbnailDataL(HBufC8*& aData, |
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TGlxImageDataFormat& aFormat, const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, const TSize& aSize, |
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TRequestStatus* aStatus) = 0; |
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/** |
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* Start asynchronous saving of thumbnail data. |
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* @param aData Buffer containing the data to be saved. |
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* @param aFormat Format of the thumbnail in aData. |
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* @param aId Media item ID. |
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* @param aFileInfo File info for media item. |
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* @param aSize Requested thumbnail size. |
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* @param aStatus Request status for the asynchronous operation. |
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*/ |
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virtual void SaveThumbnailDataL(const TDesC8& aData, |
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TGlxImageDataFormat aFormat, const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, const TSize& aSize, |
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TRequestStatus* aStatus) = 0; |
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/** |
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* Start asynchronous deletion of all saved thumbnails for an item. |
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* @param aId Media item ID. |
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* @param aFileInfo File info for media item. |
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* @param aStatus Request status for the asynchronous operation. |
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*/ |
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virtual void DeleteThumbnailsL(const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, TRequestStatus* aStatus) = 0; |
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/** |
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* Start asynchronous deletion of all saved thumbnails for items which no |
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* longer exist. |
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* @param aStatus Request status for the asynchronous operation. |
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*/ |
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virtual void CleanupThumbnailsL(TRequestStatus* aStatus) = 0; |
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/** |
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* Test whether a given thumbnail is available in storage. |
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* @param aId Media item ID. |
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* @param aFileInfo File info for media item. |
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* @param aSize Requested thumbnail size. |
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* @param aStatus Request status for the asynchronous operation. |
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*/ |
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virtual void IsThumbnailAvailableL(const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, |
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const TSize& aSize, TRequestStatus* aStatus) = 0; |
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/** |
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* Cancel an ongoing asynchronous operation. |
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*/ |
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virtual void StorageCancel() = 0; |
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/** |
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* Notify that an error occurred in background generation. |
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* @param aId Media item ID. |
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* @param aError Error code. |
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*/ |
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virtual void NotifyBackgroundError(const TGlxMediaId& aId, TInt aError) = 0; |
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}; |
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|
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/** |
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* Interface for notification of thumbnails becoming available in storage. |
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* |
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* @ingroup glx_thumbnail_creator |
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*/ |
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class MGlxtnThumbnailStorageObserver |
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{ |
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public: |
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/** |
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* Notify that a given thumbnail is available in storage. |
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* @param aId Media item ID. |
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* @param aSize Requested thumbnail size. |
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*/ |
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virtual void ThumbnailAvailable(const TGlxMediaId& aId, const TSize& aSize) = 0; |
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/** |
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* Notify that an error occurred in background generation. |
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* @param aId Media item ID. |
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* @param aError Error code. |
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*/ |
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virtual void BackgroundThumbnailError(const TGlxMediaId& aId, TInt aError) = 0; |
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}; |
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|
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#endif // M_GLXTNSTORAGE_H |
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|
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// End of File |