author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 15 Jul 2010 19:53:20 +0300 | |
branch | RCL_3 |
changeset 91 | 30342f40acbf |
parent 38 | 6297cdf66332 |
child 65 | 5bfc169077b2 |
child 92 | e1bea15f9a39 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004-2008 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: |
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* |
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*/ |
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#include "config.h" |
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#include <e32std.h> |
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#include "SyncDecodeThread.h" |
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#include "MaskedBitmap.h" |
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#include <ImageConversion.h> |
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namespace TBidirectionalState { |
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class TRunInfo; |
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}; |
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#include <EIKENV.H> |
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#define KMaxHeapSize 0x1000000 |
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class BmElem |
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{ |
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public: |
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TPtrC8 iData; |
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TThreadId iParentThreadId; |
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TRequestStatus* iRequestStatus; |
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TInt iBitmapHandle; |
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TInt iMaskHandle; |
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}; |
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enum DecoderState {ENewDecodeRequest, EDecodeInProgress, EDecoderIdle}; |
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class CSynDecoder : public CActive |
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{ |
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public: // Constructors and destructor |
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static CSynDecoder* NewL(); |
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virtual ~CSynDecoder(); |
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public: |
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void Open(const TDesC8& aData, TRequestStatus *status); |
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void Lock() { iDecoderLock.Wait(); } |
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void Release() { iDecoderLock.Signal(); } |
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private: // From base class CActive |
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void DoCancel(); |
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void RunL(); |
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TInt RunError( TInt aError ); |
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void SignalParent( TInt aError ); |
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void StartDecodeL(); |
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void SetIdle(); |
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private: // Private constructors |
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CSynDecoder(); |
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void ConstructL(); |
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private: // Data |
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BmElem iElem; |
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CImageDecoder* iDecoder; |
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CMaskedBitmap* iBitmap; |
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RFastLock iDecoderLock; |
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DecoderState iDecodeState; |
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RThread syncThread; |
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friend class CSynDecodeThread; |
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}; |
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// FORWARD DECLARATIONS |
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CSynDecoder *CSynDecodeThread::iSyncDecoder = NULL; |
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// ============================= LOCAL FUNCTIONS =============================== |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// |
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// ----------------------------------------------------------------------------- |
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CSynDecoder::CSynDecoder() : CActive(CActive::EPriorityHigh) |
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{ |
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CActiveScheduler::Add( this ); |
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} |
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void CSynDecoder::ConstructL() |
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{ |
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User::LeaveIfError(iDecoderLock.CreateLocal()); |
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SetIdle(); |
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} |
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CSynDecoder* CSynDecoder::NewL() |
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{ |
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CSynDecoder* self = new (ELeave) CSynDecoder(); |
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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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CSynDecoder::~CSynDecoder() |
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110 |
{ |
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Cancel(); |
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delete iDecoder; |
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delete iBitmap; |
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iDecoderLock.Close(); |
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} |
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116 |
|
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// ----------------------------------------------------------------------------- |
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// Decode - Decode request submitted from client thread |
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// ----------------------------------------------------------------------------- |
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void CSynDecoder::Open(const TDesC8& aData, TRequestStatus *status) |
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121 |
{ |
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// FbsSession is needed for parent thread if it doesn't have already |
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if(!RFbsSession::GetSession()) |
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RFbsSession::Connect(); |
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125 |
|
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iElem.iRequestStatus = status; |
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iElem.iData.Set(aData); |
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iElem.iParentThreadId = RThread().Id(); |
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iElem.iBitmapHandle = 0; |
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iElem.iMaskHandle = 0; |
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iDecodeState = ENewDecodeRequest; |
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} |
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133 |
|
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void CSynDecoder::SetIdle() |
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135 |
{ |
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iDecodeState = EDecoderIdle; |
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if(!IsActive()) { |
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iStatus = KRequestPending; |
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SetActive(); |
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} |
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} |
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142 |
|
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void CSynDecoder::StartDecodeL() |
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144 |
{ |
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if(iDecoder) { |
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delete iDecoder; |
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iDecoder = NULL; |
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} |
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if(iBitmap) { |
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delete iBitmap; |
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iBitmap = NULL; |
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} |
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153 |
|
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iDecoder = CImageDecoder::DataNewL(CEikonEnv::Static()->FsSession(), iElem.iData); |
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iBitmap = CMaskedBitmap::NewL(); |
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156 |
|
0
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TFrameInfo frameInfo = iDecoder->FrameInfo( 0 ); |
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TInt err = KErrNone; |
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159 |
if( frameInfo.iFlags & TFrameInfo::ETransparencyPossible ) { |
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TDisplayMode maskmode = (frameInfo.iFlags & TFrameInfo::EAlphaChannel) ? EGray256 : EGray2; |
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err = iBitmap->Create( frameInfo.iOverallSizeInPixels, EColor64K, maskmode ); |
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162 |
} |
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163 |
else |
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err = iBitmap->Create( frameInfo.iOverallSizeInPixels, EColor64K ); |
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165 |
User::LeaveIfError(err); |
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166 |
|
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167 |
// start decoding |
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168 |
CFbsBitmap& dstBitmap = iBitmap->BitmapModifyable(); |
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CFbsBitmap& dstMask = iBitmap->MaskModifyable(); |
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170 |
if( ( frameInfo.iFlags & TFrameInfo::ETransparencyPossible ) && dstMask.Handle() ) |
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171 |
iDecoder->Convert( &iStatus, dstBitmap, dstMask, 0 ); |
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172 |
else { |
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173 |
dstMask.Reset(); |
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174 |
iDecoder->Convert( &iStatus, dstBitmap, 0 ); |
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175 |
} |
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176 |
|
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177 |
iDecodeState = EDecodeInProgress; |
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178 |
SetActive(); |
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179 |
} |
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180 |
|
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181 |
// ----------------------------------------------------------------------------- |
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182 |
// CSynDecoder::DoCancel |
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183 |
// ----------------------------------------------------------------------------- |
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184 |
void CSynDecoder::DoCancel() |
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185 |
{ |
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186 |
iDecoder->Cancel(); |
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187 |
SignalParent( KErrCancel ); |
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188 |
SetIdle(); |
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189 |
} |
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190 |
|
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191 |
// ----------------------------------------------------------------------------- |
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192 |
// CSynDecoder::RunL |
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193 |
// ----------------------------------------------------------------------------- |
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194 |
void CSynDecoder::RunL() |
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195 |
{ |
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196 |
switch(iDecodeState) |
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197 |
{ |
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198 |
case ENewDecodeRequest: |
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199 |
StartDecodeL(); // start async decode |
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200 |
break; |
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201 |
case EDecodeInProgress: |
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202 |
if( iStatus.Int() == KErrNone ) { |
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203 |
iElem.iBitmapHandle = iBitmap->Bitmap().Handle(); |
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204 |
iElem.iMaskHandle = iBitmap->Mask().Handle(); |
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205 |
} |
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206 |
|
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207 |
SignalParent(iStatus.Int()); |
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208 |
SetIdle(); |
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209 |
break; |
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210 |
default: |
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211 |
SetIdle(); |
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|
212 |
} |
0
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213 |
} |
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|
214 |
|
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|
215 |
// ----------------------------------------------------------------------------- |
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// CSynDecoder::RunError |
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// ----------------------------------------------------------------------------- |
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TInt CSynDecoder::RunError(TInt aError) |
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{ |
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SignalParent(aError); |
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SetIdle(); |
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return KErrNone; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CSynDecoder::RunError |
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// ----------------------------------------------------------------------------- |
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void CSynDecoder::SignalParent(TInt aError) |
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{ |
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RThread parent; |
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parent.Open(iElem.iParentThreadId); |
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parent.RequestComplete(iElem.iRequestStatus, aError ); |
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parent.Close(); |
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} |
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|
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|
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CSynDecodeThread* CSynDecodeThread::NewL() |
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{ |
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CSynDecodeThread* self = new (ELeave) CSynDecodeThread(); |
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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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CSynDecodeThread::CSynDecodeThread() |
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{ |
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} |
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|
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CSynDecodeThread::~CSynDecodeThread() |
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{ |
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CActiveScheduler::Stop(); |
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iDecoderThread.Close(); |
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} |
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|
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void CSynDecodeThread::ConstructL() |
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{ |
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_LIT(KThreadName, "ImgDecoder"); |
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RAllocator &allocator = User::Allocator(); |
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User::LeaveIfError(iDecoderThread.Create(KThreadName, CSynDecodeThread::ScaleInThread, KDefaultStackSize, &allocator, NULL)); |
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iDecoderThread.SetPriority(EPriorityMore); |
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TRequestStatus status = KRequestPending; |
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iDecoderThread.Rendezvous(status); |
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iDecoderThread.Resume(); |
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User::WaitForRequest(status); |
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User::LeaveIfError(status.Int()); |
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} |
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|
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|
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TInt CSynDecodeThread::Decode(const TDesC8& aData) |
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{ |
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iSyncDecoder->Lock(); |
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|
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//notify decoder thread about new request |
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TRequestStatus status = KRequestPending; |
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iSyncDecoder->Open(aData, &status); |
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TRequestStatus *ps = &(iSyncDecoder->iStatus); |
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iDecoderThread.RequestComplete(ps, KErrNone); |
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|
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//wait for decode complete |
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User::WaitForRequest(status); |
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|
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iSyncDecoder->Release(); |
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return status.Int(); |
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} |
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|
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void CSynDecodeThread::Handle(TInt& aBitmapHandle, TInt& aMaskHandle) |
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{ |
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aBitmapHandle = iSyncDecoder->iElem.iBitmapHandle; |
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aMaskHandle = iSyncDecoder->iElem.iMaskHandle; |
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} |
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|
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TInt CSynDecodeThread::ScaleInThread(TAny *aPtr) |
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{ |
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CTrapCleanup* cleanup = CTrapCleanup::New(); |
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CActiveScheduler* as = new CActiveScheduler; |
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CActiveScheduler::Install(as); |
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RFbsSession fbs; |
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fbs.Connect(); |
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300 |
|
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// start event loop |
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TRAPD(err, iSyncDecoder = CSynDecoder::NewL()); |
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if (err == KErrNone) { |
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// wait for decode request from client threads |
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RThread().Rendezvous(KErrNone); |
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CActiveScheduler::Start(); |
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} |
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else { |
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RThread().Rendezvous(err); |
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} |
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|
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// thread shutdown |
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delete as; |
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delete iSyncDecoder; |
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delete cleanup; |
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fbs.Disconnect(); |
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return err; |
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} |