mtpdataproviders/mtpimagedp/src/mtpimagedputilits.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:46:41 +0200
branchRCL_3
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child 22 a5c0bb5018eb
permissions -rw-r--r--
Revision: 201004 Kit: 201008
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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:
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//
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/**
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 @file
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 @internalTechnology
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*/
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#include <f32file.h>
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#include <centralrepository.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/mmtpstoragemgr.h>
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#include <mtp/mmtpobjectmgr.h>
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#include "mtpimagedpconst.h"
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#include "mtpimagedputilits.h"
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#include "cmtpimagedp.h"
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/*
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 * The most significant bit represents whether the image object has been imported.
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 * 0 means does not be imported
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 * 1 means has been imported
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 */
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#define IMAGE_OBJECT_STATUS_BITMASK            0x8000
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/**
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 * The other left bits represent the thumbnail size of image object.
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 * The type of EFormatSubCode column is UINT16, so these bits are enought for thumbnail size.
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 * e.g. The image file of 57M bytes only has 2440 bytes of thumbnail. 
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 */
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#define IMAGE_OBJECT_THUMBNAIL_SIZE_BITMASK    0x7fff
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0
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TMTPResponseCode MTPImageDpUtilits::VerifyObjectHandleL(MMTPDataProviderFramework& aFramework, const TMTPTypeUint32& aHandle, CMTPObjectMetaData& aMetaData)
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	{
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	if (!aFramework.ObjectMgr().ObjectL(aHandle, aMetaData))
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		{
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		 return EMTPRespCodeInvalidObjectHandle;
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		}
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	return EMTPRespCodeOK;
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	}
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TInt32 MTPImageDpUtilits::FindStorage(MMTPDataProviderFramework& aFramework, const TDesC& aPath)
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    {
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    TParsePtrC parse(aPath);
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    TPtrC drive(parse.Drive());
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    TInt driveNumber;  
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    aFramework.Fs().CharToDrive(drive[0], driveNumber);
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    return aFramework.StorageMgr().FrameworkStorageId(static_cast<TDriveNumber>(driveNumber));
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    }
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TUint32 MTPImageDpUtilits::FindParentHandleL(MMTPDataProviderFramework& aFramework, CMTPImageDataProvider& aDataProvider, const TDesC& aFullPath)
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    {
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    TUint32 parentHandle = KMTPHandleNoParent;
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    TParsePtrC parse(aFullPath);
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    if(!parse.IsRoot())
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        {   
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        if (!aDataProvider.GetCacheParentHandle(parse.DriveAndPath(), parentHandle))
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            {
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            parentHandle = aFramework.ObjectMgr().HandleL(parse.DriveAndPath());
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            if (parentHandle != KMTPHandleNone)
0
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                {
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                aDataProvider.SetCacheParentHandle(parse.DriveAndPath(), parentHandle);                
0
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                }
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            }
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        }
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    return parentHandle;    
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    }
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TBool MTPImageDpUtilits::IsNewPicture(const CMTPObjectMetaData& aMetadata)
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    {
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    /**
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     * we use EFormatSubCode column to save sentinel whether this object has been imported by PC
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     * 
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     */    
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    return ((aMetadata.Uint(CMTPObjectMetaData::EFormatSubCode) & IMAGE_OBJECT_STATUS_BITMASK) == 0);
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    }
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void MTPImageDpUtilits::UpdateObjectStatusToOldL(MMTPDataProviderFramework& aFramework, CMTPObjectMetaData& aMetadata)
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    {
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    TInt status = aMetadata.Uint(CMTPObjectMetaData::EFormatSubCode) | IMAGE_OBJECT_STATUS_BITMASK;
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    aMetadata.SetUint(CMTPObjectMetaData::EFormatSubCode, status);
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    aFramework.ObjectMgr().ModifyObjectL(aMetadata);
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    }
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TInt MTPImageDpUtilits::GetThumbnailSize(const CMTPObjectMetaData& aMetadata)
0
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    {    
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    /**
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     * query thumbnail size from EFormatSubCode column
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     */
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    return (aMetadata.Uint(CMTPObjectMetaData::EFormatSubCode) & IMAGE_OBJECT_THUMBNAIL_SIZE_BITMASK);
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    }
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void MTPImageDpUtilits::UpdateObjectThumbnailSizeL(MMTPDataProviderFramework& aFramework, CMTPObjectMetaData& aMetadata, TInt aThumbnailSize)
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    {
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    //check thumbnail size whether it is overflow
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    if (aThumbnailSize <= IMAGE_OBJECT_THUMBNAIL_SIZE_BITMASK)
0
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        {
11
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        TBool newPic = MTPImageDpUtilits::IsNewPicture(aMetadata);
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        if (newPic)
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            {
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            aMetadata.SetUint(CMTPObjectMetaData::EFormatSubCode, aThumbnailSize);
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            }
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        else
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            {
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            aThumbnailSize |= IMAGE_OBJECT_STATUS_BITMASK;
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            aMetadata.SetUint(CMTPObjectMetaData::EFormatSubCode, aThumbnailSize);
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            }
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        aFramework.ObjectMgr().ModifyObjectL(aMetadata);
0
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        }
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    }