author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 31 Mar 2010 21:34:36 +0300 | |
branch | RCL_3 |
changeset 10 | 112a725ff2c2 |
child 16 | 67eb01668b0e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 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 the License "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: Asynchronous file copy, implemented with several small sync block copies.* |
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*/ |
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// INCLUDE FILES |
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#include <mpxlog.h> |
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#include <bautils.h> |
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#include "vcxmyvideosasyncfilecopy.h" |
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|
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/** |
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* One block shouldn't take more than 1 second to copy to keep cancel |
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* response fast enough. On the otherhand, the deleting the already |
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* copied data may take several seconds. |
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* |
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* Copying speed tests (from massmemory to memorycard): |
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* |
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* Block size speed response time |
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* 6MB -> 3.20 MB/s ~2sec (unacceptable response time, full speed) |
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* 3MB -> 3.17 MB/s ~1sec (poor response time, almost full speed) |
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* 1MB -> 3.16 MB/s ~0.3sec (good response time, almost full speed) |
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* 0.5MB -> 2.60 MB/s ~0.19sec (good response time, some speed loss) |
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* |
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* -> 1MB is the best. |
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* |
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* * Copying speed tests (from memorycard to massmemory): |
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* |
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* Block size speed response time |
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* 3MB -> 5.470 MB/s 0.548sec |
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* 1MB -> 4.393 MB/s 0.228sec |
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* |
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* 1M gives slightly reduced speed, great response time. 3MB would be better than |
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* 1M but can't use it since it gives 1sec response time in memorycard writing. |
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*/ |
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const TInt KBigBufSize = 1024 * 1024; // 1MB |
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const TInt KMediumBufSize = 512 * 1024; // 0.5MB |
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const TInt KSmallBufSize = 100 * 1024; // 0.1MB |
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// ============================ MEMBER FUNCTIONS ============================== |
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// ---------------------------------------------------------------------------- |
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// Two-phased constructor. |
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// ---------------------------------------------------------------------------- |
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// |
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CVcxMyVideosAsyncFileCopy* CVcxMyVideosAsyncFileCopy::NewL( RFs& aFs ) |
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{ |
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CVcxMyVideosAsyncFileCopy* self = new (ELeave) CVcxMyVideosAsyncFileCopy( aFs ); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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// ---------------------------------------------------------------------------- |
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// Destructor. |
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// ---------------------------------------------------------------------------- |
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// |
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CVcxMyVideosAsyncFileCopy::~CVcxMyVideosAsyncFileCopy() |
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{ |
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iSourceFile.Close(); |
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iTargetFile.Close(); |
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delete iFileBlockBuffer; |
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} |
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// ---------------------------------------------------------------------------- |
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// Constructor. |
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// ---------------------------------------------------------------------------- |
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// |
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CVcxMyVideosAsyncFileCopy::CVcxMyVideosAsyncFileCopy( RFs& aFs ) |
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: iFs( aFs ) |
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{ |
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} |
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// ---------------------------------------------------------------------------- |
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// Symbian 2nd phase constructor can leave. |
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// ---------------------------------------------------------------------------- |
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// |
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void CVcxMyVideosAsyncFileCopy::ConstructL () |
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{ |
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} |
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// ---------------------------------------------------------------------------- |
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// CVcxMyVideosAsyncFileCopy::CopyL |
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// ---------------------------------------------------------------------------- |
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// |
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TBool CVcxMyVideosAsyncFileCopy::CopyL( const TDesC& aSourceFileName, |
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const TDesC& aTargetFileName ) |
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{ |
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::CopyL() start"); |
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if ( iIsCopying ) |
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106 |
{ |
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User::Leave( KErrNotReady ); |
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} |
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109 |
|
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TInt error = iSourceFile.Open( iFs, aSourceFileName, EFileRead | EFileShareReadersOnly ); |
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111 |
|
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User::LeaveIfError( error ); |
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113 |
|
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error = iTargetFile.Replace( iFs, aTargetFileName, EFileWrite | EFileWriteDirectIO |
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| EFileShareExclusive ); |
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116 |
|
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if ( error == KErrPathNotFound ) |
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118 |
{ |
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error = iFs.MkDirAll( aTargetFileName ); |
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if ( error == KErrNone ) |
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121 |
{ |
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error = iTargetFile.Create( iFs, aTargetFileName, EFileWrite |
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| EFileWriteDirectIO | EFileShareExclusive ); |
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} |
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} |
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126 |
|
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User::LeaveIfError( error ); |
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User::LeaveIfError( iSourceFile.Size( iDataRemaining ) ); |
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User::LeaveIfError( iTargetFile.SetSize( iDataRemaining ) ); |
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130 |
|
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TInt suggestBlockSize; |
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if ( iDataRemaining > KBigBufSize ) |
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{ |
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suggestBlockSize = KBigBufSize; |
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} |
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else |
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137 |
{ |
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suggestBlockSize = iDataRemaining; |
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} |
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AllocateFileBlockBufferL( suggestBlockSize ); |
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141 |
|
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iReadPos = 0; |
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iIsCopying = ETrue; |
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144 |
|
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#ifdef _DEBUG |
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iStartTime.UniversalTime(); |
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#endif |
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148 |
|
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DoNextBlockCopy(); |
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150 |
|
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::CopyL() exit"); |
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return !iIsCopying; |
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} |
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154 |
|
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// ---------------------------------------------------------------------------- |
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// CVcxMyVideosAsyncFileCopy::CopyIsOngoing |
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// ---------------------------------------------------------------------------- |
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158 |
// |
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TBool CVcxMyVideosAsyncFileCopy::CopyIsOngoing() |
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160 |
{ |
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return iIsCopying; |
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} |
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163 |
|
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164 |
// ---------------------------------------------------------------------------- |
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// CVcxMyVideosAsyncFileCopy::DoNextBlockCopy |
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// ---------------------------------------------------------------------------- |
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167 |
// |
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TInt CVcxMyVideosAsyncFileCopy::DoNextBlockCopy() |
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169 |
{ |
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TInt err = KErrNone; |
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TPtr8 fileBufPtr = iFileBlockBuffer->Des(); |
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172 |
|
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TInt bytesToCopy = Min( iDataRemaining, fileBufPtr.MaxSize() ); |
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174 |
|
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err = iSourceFile.Read( iReadPos, fileBufPtr, bytesToCopy ); |
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if ( err == KErrNone && fileBufPtr.Length() != bytesToCopy ) |
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177 |
{ |
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err = KErrCorrupt; |
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} |
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if ( err == KErrNone ) |
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181 |
{ |
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err = iTargetFile.Write( iReadPos, fileBufPtr, bytesToCopy ); |
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183 |
} |
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if ( err != KErrNone ) |
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185 |
{ |
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EndCopy( ETrue /* remove target file */); |
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return err; |
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} |
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189 |
|
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iReadPos += bytesToCopy; |
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iDataRemaining -= bytesToCopy; |
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192 |
|
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if ( iDataRemaining == 0 ) |
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194 |
{ |
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EndCopy( EFalse /* keep target file */); |
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} |
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197 |
|
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return KErrNone; |
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} |
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200 |
|
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201 |
// ---------------------------------------------------------------------------- |
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202 |
// CVcxMyVideosAsyncFileCopy::Cancel |
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// ---------------------------------------------------------------------------- |
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204 |
// |
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void CVcxMyVideosAsyncFileCopy::Cancel() |
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{ |
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::Cancel() start"); |
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208 |
|
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if ( iIsCopying ) |
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210 |
{ |
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211 |
EndCopy( ETrue /* remove target file */ ); |
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} |
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::Cancel() exit"); |
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} |
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// ---------------------------------------------------------------------------- |
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// CVcxMyVideosAsyncFileCopy::AllocateFileBlockBufferL |
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// ---------------------------------------------------------------------------- |
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// |
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void CVcxMyVideosAsyncFileCopy::AllocateFileBlockBufferL( TInt aFileSize ) |
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{ |
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delete iFileBlockBuffer; |
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iFileBlockBuffer = NULL; |
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TInt big = Min( aFileSize, KBigBufSize ); |
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iFileBlockBuffer = HBufC8::New( big ); |
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if ( !iFileBlockBuffer ) |
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{ |
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iFileBlockBuffer = HBufC8::New( KMediumBufSize ); |
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} |
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if ( !iFileBlockBuffer ) |
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{ |
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iFileBlockBuffer = HBufC8::NewL( KSmallBufSize ); |
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} |
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} |
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|
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void CVcxMyVideosAsyncFileCopy::EndCopy( TBool aRemoveTargetFile ) |
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{ |
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::EndCopy() start"); |
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|
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TTime modified; |
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iSourceFile.Modified( modified ); |
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iTargetFile.SetModified( modified ); |
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|
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#ifdef _DEBUG |
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|
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TDateTime dT = modified.DateTime(); |
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TBuf<200> buf; |
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buf.Format(_L("CVcxMyVideosAsyncFileCopy:: setting file modified date: %2d.%2d.%4d %2d:%2d:%2d"), |
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dT.Day()+1, dT.Month()+1, dT.Year(), dT.Hour(), dT.Minute(), dT.Second() ); |
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MPX_DEBUG2("%S", &buf ); |
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|
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const TInt megaBytes = 0x100000; |
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const TInt kiloBytes = 1024; |
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TInt dataCopiedInMegaBytes = iReadPos / megaBytes; |
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TTime now; |
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now.UniversalTime(); |
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TTimeIntervalSeconds interval; |
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now.SecondsFrom( iStartTime, interval ); |
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TInt copyingSpeed = 0; |
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if ( interval.Int() > 0 ) |
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{ |
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copyingSpeed = (iReadPos / kiloBytes) / interval.Int(); |
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} |
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MPX_DEBUG3("CVcxMyVideosAsyncFileCopy:: Data copied: %d (MB), %d kB/s", dataCopiedInMegaBytes, copyingSpeed); |
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#endif |
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|
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delete iFileBlockBuffer; |
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iFileBlockBuffer = NULL; |
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iReadPos = 0; |
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iDataRemaining = 0; |
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iSourceFile.Close(); |
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iIsCopying = EFalse; |
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|
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if ( aRemoveTargetFile ) |
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{ |
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TFileName fileName; |
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TInt err = iTargetFile.FullName( fileName ); |
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|
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iTargetFile.Close(); |
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|
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if ( err == KErrNone ) |
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{ |
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MPX_DEBUG2("CVcxMyVideosAsyncFileCopy:: removing file: %S", &fileName); |
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iFs.Delete( fileName ); |
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} |
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} |
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else |
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{ |
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iTargetFile.Close(); |
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} |
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|
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MPX_DEBUG1("CVcxMyVideosAsyncFileCopy::EndCopy() exit"); |
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} |