author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:43:37 +0200 | |
branch | RCL_3 |
changeset 6 | 10534483575f |
parent 0 | 15bf7259bb7c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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: Screen buffer implementation |
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* |
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*/ |
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#include <coemain.h> |
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#include "alflogger.h" |
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#include "alf/alfenv.h" |
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#include "alfclient.h" |
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#include "alf/alfstatic.h" |
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#include "alf/alfconstants.h" |
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#include "alfuids.h" |
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#include "alf/alfscreenbuffer.h" |
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#include "alf/alfsymbiansbdrawer.h" |
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#include <uiacceltk/HuiUtil.h> |
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// *** class CAlfScreenBufferEventFetcher |
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NONSHARABLE_CLASS(CAlfScreenBufferEventFetcher): public CActive |
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{ |
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public: // Struct |
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struct TScreenBufferInfo |
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{ |
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MAlfScreenBufferObserver* iObserver; // Observer for this screen buffer. Not owned |
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TUid iBufferUid; // Uid of the buffer to be observed. |
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TInt iPriority; // Priority of the buffer. Not yet used. |
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TInt iBitmapHandle; // Handle to the shared CFbsBitmap that contains the buffer. |
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TInt iMaskHandle; // Mask handle |
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TRect iLastDisplayRect; // Display rect |
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TRect iLastDirtyRect; // Dirty rect |
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}; |
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public: // New methods |
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CAlfScreenBufferEventFetcher(RAlfClient& aClient, MAlfScreenBufferObserver& aScreenBufferObs) |
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:CActive(CActive::EPriorityHigh), iClient(aClient), iEventAsDescriptor(iEvent) |
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{ |
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CAlfScreenBufferEventFetcher::TScreenBufferInfo info = {&aScreenBufferObs, KNullUid, 0, 0, 0, TRect(), TRect()}; |
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iBufferInfo = info; |
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CActiveScheduler::Add(this); |
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} |
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~CAlfScreenBufferEventFetcher() |
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{ |
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Cancel(); |
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} |
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// Request a new event |
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void RequestBufferEvent() |
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{ |
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if(!IsActive()) |
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{ |
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SetActive(); |
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iEvent.iBufferUid = iBufferInfo.iBufferUid; |
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iEvent.iEventId = 0; |
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iEvent.iDisplayRect = TRect(); |
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iEvent.iDirtyRect = TRect(); |
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iClient.SendAsyncCmd(EAlfSBufRequestEvent, iEventAsDescriptor, iStatus); |
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} |
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} |
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// Return buffer info |
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TScreenBufferInfo& ScreenBufferInfo() |
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{ |
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return(iBufferInfo); |
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} |
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private: // From CActive |
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void RunL() |
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{ |
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if(iStatus.Int() != KErrNone) |
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{ |
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USER_INVARIANT(); |
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} |
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// Issue a new event request first |
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TAlfScreenBufferEvent event = iEvent; |
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RequestBufferEvent(); |
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// Handle event |
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if (event.iEventId == MAlfScreenBufferObserver::ENone) // Buffer complete event |
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{ |
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if (iBufferInfo.iObserver->BufferComplete(event.iBufferUid, event.iDisplayRect, event.iDirtyRect)) |
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{ |
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// Request next buffer automatically |
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TUid uidEvent = event.iBufferUid; |
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TPckg<TUid> eventPckg(uidEvent); |
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iClient.SendSyncCmd(EAlfSBufRequestNextBuffer, eventPckg); |
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109 |
} |
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} |
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111 |
else |
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112 |
{ |
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if (event.iEventId == MAlfScreenBufferObserver::ECreated) |
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114 |
{ |
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// Add this buffer observer again to the array in Alf Server to get valid bitmap handles in return. |
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TAlfScreenBufferBitmaps addObserverEvent = {iBufferInfo.iBufferUid, iBufferInfo.iPriority, NULL, NULL}; |
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TPckg<TAlfScreenBufferBitmaps> eventPckg(addObserverEvent); |
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iClient.SendSyncCmd(EAlfSBufAddObserver, eventPckg); |
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119 |
|
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// Update bitmap handles |
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iBufferInfo.iBitmapHandle = addObserverEvent.iBitmapHandle; |
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iBufferInfo.iMaskHandle = addObserverEvent.iMaskHandle; |
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123 |
} |
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else if (event.iEventId == MAlfScreenBufferObserver::EDeleted) |
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125 |
{ |
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// Invalidate bitmap handles |
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iBufferInfo.iBitmapHandle = NULL; |
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iBufferInfo.iMaskHandle = NULL; |
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129 |
} |
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130 |
|
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131 |
iBufferInfo.iObserver->HandleScreenBufferEvent(event.iBufferUid, event.iEventId); |
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132 |
} |
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133 |
} |
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134 |
|
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135 |
void DoCancel() |
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136 |
{ |
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137 |
// Remove this AO from the observer array in Alf Server |
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TAlfScreenBufferBitmaps event = {iBufferInfo.iBufferUid, 0, 0}; |
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139 |
TPckg<TAlfScreenBufferBitmaps> eventPckg(event); |
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140 |
iClient.SendSyncCmd(EAlfSBufRemoveObserver, eventPckg); |
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141 |
} |
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142 |
|
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143 |
TInt RunError(TInt /*aError*/) |
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144 |
{ |
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145 |
// Ignore error |
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return KErrNone; |
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147 |
} |
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148 |
|
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private: // Data |
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150 |
|
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151 |
RAlfClient& iClient; |
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TAlfScreenBufferEvent iEvent; // Event data for pending buffer event. |
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TPckg<TAlfScreenBufferEvent> iEventAsDescriptor; |
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154 |
|
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155 |
CAlfScreenBufferEventFetcher::TScreenBufferInfo iBufferInfo; // Buffer information |
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156 |
}; |
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157 |
|
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158 |
|
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159 |
|
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160 |
// *** Array item for CAlfScreenBuffer |
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161 |
|
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162 |
struct TAlfScreenBufferHandlerItem |
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163 |
{ |
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TAlfScreenBufferHandlerItem( TInt aId, CAlfScreenBufferEventFetcher* aAoPtr) |
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:iId( aId ), iAoPtr( aAoPtr ) |
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166 |
{}; |
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TInt iId; // Buffer uid |
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CAlfScreenBufferEventFetcher* iAoPtr; // Pointer to the active object that handles buffer events. Owned. |
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169 |
}; |
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170 |
|
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171 |
|
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172 |
// *** Private data for CAlfScreenBuffer |
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173 |
|
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174 |
NONSHARABLE_CLASS(CAlfScreenBuffer::CPrivateData):public CBase |
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175 |
{ |
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176 |
public: |
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177 |
~CPrivateData() |
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178 |
{ |
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179 |
iScreenBufferHandlers.Close(); |
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180 |
if (iIsAlfEnvOwned) |
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181 |
{ |
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182 |
delete(iEnv); |
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183 |
} |
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184 |
} |
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185 |
|
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186 |
CAlfEnv* iEnv; |
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187 |
TBool iIsAlfEnvOwned; |
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188 |
RArray<TAlfScreenBufferHandlerItem> iScreenBufferHandlers; // List of all buffer observer Active Objects |
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189 |
}; |
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190 |
|
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191 |
|
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192 |
// *** class CAlfScreenBuffer |
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193 |
|
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194 |
EXPORT_C CAlfScreenBuffer* CAlfScreenBuffer::NewL() |
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195 |
{ |
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// Create own aAlf env if it does not exist. |
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TBool isAlfEnvOwned = EFalse; |
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CAlfEnv* env = CAlfEnv::Static(); |
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199 |
if (!env) |
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200 |
{ |
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201 |
isAlfEnvOwned = ETrue; |
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env = CAlfEnv::NewL(); |
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203 |
} |
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204 |
|
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205 |
// Create object |
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CAlfScreenBuffer* self = new( ELeave ) CAlfScreenBuffer(); |
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207 |
CleanupStack::PushL( self ); |
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self->ConstructL(env, isAlfEnvOwned); |
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CleanupStack::Pop( self ); |
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210 |
return self; |
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}; |
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EXPORT_C CAlfScreenBuffer* CAlfScreenBuffer::NewL(CAlfEnv& aEnv) |
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{ |
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CAlfScreenBuffer* self = new( ELeave ) CAlfScreenBuffer(); |
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CleanupStack::PushL( self ); |
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self->ConstructL(&aEnv, EFalse); |
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CleanupStack::Pop( self ); |
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return self; |
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}; |
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CAlfScreenBuffer::CAlfScreenBuffer() |
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{ |
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} |
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// @deprecated |
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EXPORT_C CAlfScreenBuffer::CAlfScreenBuffer(CAlfEnv& /*aEnv*/) |
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{ |
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} |
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EXPORT_C CAlfScreenBuffer::~CAlfScreenBuffer() |
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{ |
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for (TInt i = iData->iScreenBufferHandlers.Count()-1; i >= 0 ; i--) |
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{ |
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RemoveObserver(iData->iScreenBufferHandlers[i].iAoPtr->ScreenBufferInfo().iBufferUid); |
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} |
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delete iData; |
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} |
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// @deprecated |
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EXPORT_C void CAlfScreenBuffer::ConstructL() |
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{ |
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// Not used, preserved for BC |
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} |
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void CAlfScreenBuffer::ConstructL(CAlfEnv* aEnv, TBool aIsAlfEnvOwned) |
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{ |
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//@todo : should I check that only one instance is created per alf client? |
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// Create private data |
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iData = new (ELeave) CPrivateData; |
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iData->iEnv = aEnv; |
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iData->iIsAlfEnvOwned = aIsAlfEnvOwned; |
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} |
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|
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|
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EXPORT_C MAlfBufferDrawer* CAlfScreenBuffer::GetDrawingInterface(TUid aInterfaceUid, TUid aBufferUid) |
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{ |
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// Symbian IF |
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if (aInterfaceUid == KAlfSymbianBufferDrawerUid) |
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{ |
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TAlfScreenBufferHandlerItem item( aBufferUid.iUid, NULL ); |
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TInt index; |
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if ( iData->iScreenBufferHandlers.FindInSignedKeyOrder( item, index ) == KErrNone ) |
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{ |
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if (iData->iScreenBufferHandlers[index].iAoPtr->ScreenBufferInfo().iBitmapHandle) |
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{ |
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CAlfSymbianBufferDrawer* drawer = NULL; |
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TRAPD(err, drawer = CAlfSymbianBufferDrawer::NewL()); |
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if (!err) |
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{ |
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TRAP(err,drawer->SetBufferL( |
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iData->iScreenBufferHandlers[index].iAoPtr->ScreenBufferInfo().iBitmapHandle, |
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iData->iScreenBufferHandlers[index].iAoPtr->ScreenBufferInfo().iMaskHandle)); |
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if (err) |
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{ |
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delete drawer; |
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return NULL; |
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} |
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else |
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{ |
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return drawer; |
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} |
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} |
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} |
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} |
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} |
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return NULL; |
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} |
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|
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|
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EXPORT_C MAlfBufferGc* CAlfScreenBuffer::GetGraphicsContext(TUid /*aInterfaceUid*/, TUid /*aBufferUid*/) |
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{ |
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return ((MAlfBufferGc*)NULL); |
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} |
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|
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|
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EXPORT_C void CAlfScreenBuffer::AddObserverL(TUid aBufferId, MAlfScreenBufferObserver* aObserver, TInt aPriority) |
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{ |
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AddObserverL(aBufferId, CAlfScreenBuffer::EFlagNone, aObserver, aPriority); |
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} |
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|
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|
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EXPORT_C void CAlfScreenBuffer::AddObserverL(TUid aBufferId, TUint aFlags, MAlfScreenBufferObserver* aObserver, TInt aPriority) |
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{ |
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// Add to the observer array in Alf Server, and get bitmap handles in return. |
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TAlfScreenBufferBitmaps event = {aBufferId, aPriority, aFlags, NULL, NULL}; |
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TPckg<TAlfScreenBufferBitmaps> eventPckg(event); |
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User::LeaveIfError(iData->iEnv->Client().SendSyncCmd(EAlfSBufAddObserver, eventPckg)); |
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|
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// Append the handler to the client list |
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CAlfScreenBufferEventFetcher* eventFetcher = new (ELeave) CAlfScreenBufferEventFetcher(iData->iEnv->Client(), *aObserver); |
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CAlfScreenBufferEventFetcher::TScreenBufferInfo info = {eventFetcher->ScreenBufferInfo().iObserver, event.iBufferUid, aPriority, event.iBitmapHandle, event.iMaskHandle, TRect(), TRect()}; |
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eventFetcher->ScreenBufferInfo() = info; |
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// Transfers ownership of eventFetcher |
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TInt err = iData->iScreenBufferHandlers.InsertInUnsignedKeyOrder(TAlfScreenBufferHandlerItem(aBufferId.iUid, eventFetcher)); |
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|
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if (err) |
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{ |
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delete eventFetcher; |
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RemoveObserver(aBufferId); |
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User::Leave(err); |
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} |
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else |
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{ |
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// Start observing any event |
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eventFetcher->RequestBufferEvent(); |
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} |
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} |
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|
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|
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// Note: This can be also called to already removed observers. In that case it has no effect. |
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EXPORT_C void CAlfScreenBuffer::RemoveObserver(TUid aBufferId) |
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{ |
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// Remove from the observer array in Alf Server |
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TAlfScreenBufferBitmaps event = {aBufferId, 0, 0}; |
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TPckg<TAlfScreenBufferBitmaps> eventPckg(event); |
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iData->iEnv->Client().SendSyncCmd(EAlfSBufRemoveObserver, eventPckg); |
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|
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// Remove the handler from the client list |
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TAlfScreenBufferHandlerItem item( aBufferId.iUid, NULL ); |
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TInt index; |
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if ( iData->iScreenBufferHandlers.FindInSignedKeyOrder( item, index ) == KErrNone ) |
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{ |
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delete(iData->iScreenBufferHandlers[index].iAoPtr); |
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iData->iScreenBufferHandlers.Remove(index); |
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} |
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} |
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|
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|
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EXPORT_C void CAlfScreenBuffer::RequestNextBuffer(TUid aBufferId) |
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{ |
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TAlfScreenBufferHandlerItem item( aBufferId.iUid, NULL ); |
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TInt index; |
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if ( iData->iScreenBufferHandlers.FindInSignedKeyOrder( item, index ) == KErrNone ) |
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{ |
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TUid event = aBufferId; |
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TPckg<TUid> eventPckg(event); |
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iData->iEnv->Client().SendSyncCmd(EAlfSBufRequestNextBuffer, eventPckg); |
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} |
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else |
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{ |
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// I am not a listener for this buffer |
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__ALFLOGSTRING1( "CAlfScreenBuffer::RequestNextBuffer(). Observer not found for uid %x", aBufferId.iUid ); |
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} |
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} |
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|
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|
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EXPORT_C void CAlfScreenBuffer::RequestBufferDraw(TUid aBufferId) |
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{ |
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TAlfScreenBufferHandlerItem item( aBufferId.iUid, NULL ); |
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TInt index; |
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if ( iData->iScreenBufferHandlers.FindInSignedKeyOrder( item, index ) == KErrNone ) |
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{ |
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TUid event = aBufferId; |
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TPckg<TUid> eventPckg(event); |
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iData->iEnv->Client().SendSyncCmd(EAlfSBufRequestBufferDraw, eventPckg); |
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} |
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else |
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{ |
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// I am not a listener for this buffer |
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__ALFLOGSTRING1( "CAlfScreenBuffer::RequestNextBuffer(). Observer not found for uid %x", aBufferId.iUid ); |
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} |
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} |
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|
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