camerauis/cameraxui/cxengine/src/cxeimagedataitemsymbian.cpp
author hgs
Thu, 15 Jul 2010 01:46:05 +0300
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permissions -rw-r--r--
201021_1
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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:
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*
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*/
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#include <bautils.h> // for deleting files
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#include "cxeimagedataitemsymbian.h"
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#include "cxeerrormappingsymbian.h"
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#include "cxesysutil.h"
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#include "cxutils.h"
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#include "cxestate.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "cxeimagedataitemsymbianTraces.h"
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#endif
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CxeImageDataItemSymbian::CxeImageDataItemSymbian(QByteArray data,
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                                                 QString filename,
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                                                 int id,
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                                                 CxeImageDataItem::State state)
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  : CxeStateMachine("CxeImageDataItemSymbian"),
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    mError(KErrNone),
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    mId(id),
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    mData(data),
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    mPath(filename)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    qRegisterMetaType<CxeImageDataItem::State>();
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    qRegisterMetaType<CxeError::Id>();
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    // Init mState
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    initializeStates();
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    setInitialState(state);
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    // Init delayer variables
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    //mDelayedDelete = false;
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    //mDelayedRename = false;
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    //mDelayedFileName = NULL;
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    CX_DEBUG_EXIT_FUNCTION();
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}
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CxeImageDataItemSymbian::~CxeImageDataItemSymbian()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    // Close file
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    mFile.Close();
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    // Close file system
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    mFs.Close();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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void CxeImageDataItemSymbian::deleteImage()
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    {
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    CX_DEBUG_ENTER_FUNCTION();
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    int err = KErrNone;
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    //! @todo: make this function return a KErrNotReady if below
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    if ( mState != CxeImageDataItem::Idle )
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        {
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        CX_DEBUG(("Error: This data item has no data..."));
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        CX_DEBUG_ASSERT(0); // panics
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        return;
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        }
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    // do delete or delayed delete
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    if (( mState == CxeImageDataItem::Waiting ) || ( mState == CxeImageDataItem::Saving ))
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        {
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        // we are currently saving, so we have to delete later
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        CX_DEBUG(("delayed delete"));
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        mDelayedDelete = true;
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        }
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    else
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        {
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        // delete now
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        CX_DEBUG(("deleting now..."));
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        err = KErrNotFound;
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        //! @todo: this is horrible for performance... there is no need to create multiple server sessions
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        RFs fs;
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        TInt connectError = fs.Connect();
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        BaflUtils ba;
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        if( !connectError && ba.FileExists( fs, *mPath ) )
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            {
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            err = KErrNone;
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            ba.DeleteFile( fs, *mPath );
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            }
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        fs.Close();
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        }
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    CX_DEBUG(("err: %d", err));
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    CX_DEBUG_EXIT_FUNCTION();
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    //return err; //! @todo
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    }
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void CxeImageDataItemSymbian::renameImage( const TDesC& newPath )
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    {
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    CX_DEBUG_ENTER_FUNCTION();
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   119
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    int err = KErrNone;
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   121
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    //! @todo: make this function return a KErrNotReady if below
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    if ( mState != CxeImageDataItem::Idle )
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        {
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        CX_DEBUG(("Error: This data item has no data..."));
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        CX_DEBUG_ASSERT(0); // panics
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        return;
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        }
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   129
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    // do rename or delayed rename
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    if (( mState == CxeImageDataItem::Waiting ) || ( mState == CxeImageDataItem::Saving ))
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        {
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        // we are currently saving, so we have to rename later
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        CX_DEBUG(("delayed rename"));
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        mDelayedRename = true;
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   136
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        TRAP( err,
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            mDelayedFileName = HBufC::NewL( newPath.Length() );
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            mDelayedFileName->Des().Append( newPath );
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   140
            );
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   141
        }
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    else
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   143
        {
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   144
        // rename now
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        CX_DEBUG(("delayed rename"));
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        err = KErrNotFound;
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   147
        RFs fs;
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        TInt connectError = fs.Connect();
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   149
        BaflUtils ba;
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   150
        if( !connectError && ba.FileExists( fs, *mPath ) )
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   151
            {
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            err = KErrNone;
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   153
            ba.RenameFile( fs, *mPath, newPath );
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   154
            }
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        fs.Close();
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   156
        }
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   157
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    CX_DEBUG(("err: %d", err));
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   159
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   160
    CX_DEBUG_EXIT_FUNCTION();
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    //return err; //! @todo
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   162
    }
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   163
*/
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   164
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CxeError::Id CxeImageDataItemSymbian::save()
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{
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   167
    CX_DEBUG_ENTER_FUNCTION();
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   168
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   169
    mError = KErrNone;
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   170
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   171
    CX_DEBUG(( "Starting to save %s", mPath.toAscii().constData() ));
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   172
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   173
    if (mPath.isEmpty()) {
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   174
        CX_DEBUG(("Filename not set !"));
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   175
        mError = KErrArgument;
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   176
    }
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   177
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   178
    TPtrC16 filename;
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   179
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   180
    if (!mError) {
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   181
        filename.Set(reinterpret_cast<const TUint16*>(mPath.utf16()));
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   182
        // Init
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   183
        mError = mFs.Connect();
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   184
        CX_DEBUG(("mFsSession.Connect mError=%d", mError));
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   185
    }
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   186
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   187
    // Get drive number
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   188
    TInt drive = 0;
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   189
    if (!mError) {
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   190
        mError = RFs::CharToDrive(filename[0], drive);
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   191
        CX_DEBUG(("CharToDrive mError=%d", mError));
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   192
    }
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   193
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   194
    // Check disk space
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   195
    if (!mError) {
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   196
        TBool fullDisk = EFalse;
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   197
        fullDisk = checkDiskSpace(&mFs, mData.size(), drive);
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   198
        if (fullDisk) {
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   199
            CX_DEBUG(("SysUtil::FullDisk"));
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   200
            mError = KErrDiskFull;
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diff changeset
   201
        }
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   202
    }
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   203
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   204
    // Attempt to create the file
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   205
    if (!mError) {
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   206
        // Note: In sake of MDS not starting harvesting here,
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   207
        // do not use RFile::Replace. If harvesting is started now,
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   208
        // our later call to harvest may be ignored and
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   209
        // file may be missing from "Captured" album.
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   210
        mError = mFile.Create(mFs, filename, EFileWrite);
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   211
        CX_DEBUG(("file.Create mError=%d", mError));
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   212
    }
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   213
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   214
    // Write the file
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   215
    if (!mError) {
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   216
        // Update state
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   217
        setState(CxeImageDataItem::Saving);
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diff changeset
   218
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   219
        CX_DEBUG(("about to write to file"));
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   220
        TPtrC8 data(reinterpret_cast<const TUint8*> (mData.constData()), mData.size());
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   221
        mError = mFile.Write(data); // synchronous
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   222
        saveCleanup();
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   223
        CX_DEBUG(("file write completed"));
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   224
    }
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   225
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   226
    mFile.Close(); //~400us
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   227
    mFs.Close();   //~450us
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   228
    OstTrace0(camerax_performance, CXEIMAGEDATAIMTEMSYMBIAN_SAVED, "msg: e_CX_SHOT_TO_SAVE 0");
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   229
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   230
    if (mError == KErrNone) {
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diff changeset
   231
        setState(CxeImageDataItem::Saved);
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    } else {
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        setState(CxeImageDataItem::SaveFailed);
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    }
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    emit imageSaved(CxeErrorHandlingSymbian::map(mError), mPath, mId);
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   236
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    CX_DEBUG(("mError: %d", mError));
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    CX_DEBUG_EXIT_FUNCTION();
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    return CxeErrorHandlingSymbian::map(mError);
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}
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/**
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* Get the id number of this data item.
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*/
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int CxeImageDataItemSymbian::id() const
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{
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    return mId;
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}
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/**
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* Get the path of this data item.
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*/
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QString CxeImageDataItemSymbian::path() const
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{
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    return mPath;
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}
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int CxeImageDataItemSymbian::checkDiskSpace(RFs* aFs,
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        TInt aBytesToWrite,
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        TInt aDrive)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    int value = CxeSysUtil::DiskSpaceBelowCriticalLevel(
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            aFs,
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            aBytesToWrite,
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            aDrive );
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    return value;
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}
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void CxeImageDataItemSymbian::saveCleanup()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    CX_DEBUG_ASSERT( state() == CxeImageDataItem::Saving );
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    // Flush file.
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    if (!mError) {
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        CX_DEBUG(("flushing..."));
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        mError = mFile.Flush();
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        CX_DEBUG(("flushed"));
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    }
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    /*
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    // Delayed rename, if needed
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    if (( !mError ) && ( mDelayedRename ))
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        {
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        CX_DEBUG(("doing delayed rename..."));
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        mError = KErrNotFound;
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        BaflUtils ba;
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        if( ba.FileExists( mFs, *mPath ) )
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            {
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            mError = KErrNone;
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            TPtrC newPath = *mDelayedFileName;
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            ba.RenameFile( mFs, *mPath, newPath );
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            }
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        mDelayedRename = false;
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        CX_DEBUG(("rename done, mError: %d", mError));
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        }
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   301
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    // Delayed delete, if needed
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    if (( !mError ) && ( mDelayedDelete ))
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        {
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   305
        CX_DEBUG(("doing delayed delete..."));
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        mError = KErrNotFound;
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   307
        BaflUtils ba;
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        if( ba.FileExists( mFs, *mPath ) )
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            {
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            mError = KErrNone;
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            ba.DeleteFile( mFs, *mPath );
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            }
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        mDelayedDelete = false;
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        CX_DEBUG(("delete done, mError: %d", mError));
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        }*/
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   316
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    CX_DEBUG_EXIT_FUNCTION();
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}
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   319
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CxeImageDataItem::State CxeImageDataItemSymbian::state() const
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{
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    return static_cast<CxeImageDataItem::State> (stateId());
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}
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   324
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void CxeImageDataItemSymbian::handleStateChanged(int newStateId, CxeError::Id error)
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{
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    emit stateChanged(static_cast<State> (newStateId), error);
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}
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   329
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   330
void CxeImageDataItemSymbian::initializeStates()
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{
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    // addState( id, name, allowed next states )
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   333
    addState(new CxeState(SavePending, "SavePending", Saving | SaveFailed));
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   334
    addState(new CxeState(Saving, "Saving", Saved | SaveFailed));
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   335
    addState(new CxeState(Saved, "Saved", 0));
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    addState(new CxeState(SaveFailed, "SaveFailed", 0));
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   337
}