--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/VideoSource/src/CVSMMFDataBuffer.cpp	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,343 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Video Source subsystem.
+*
+*/
+
+
+// INCLUDE FILES
+
+#include <ecam.h>
+#include <e32debug.h>
+#include "CVSMMFDataBuffer.h"
+
+// MACROS
+
+#ifdef _DEBUG
+#    define __IF_DEBUG(t) {RDebug::t;}
+#else
+#    define __IF_DEBUG(t)
+#endif
+
+// ============================ CVSMMFDataBuffer ===============================
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::NewL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CVSMMFDataBuffer* CVSMMFDataBuffer::NewL()
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::NewL() >>"), RThread().Id().operator TUint()));
+    CVSMMFDataBuffer* self = new ( ELeave ) CVSMMFDataBuffer;
+    CleanupStack::PushL(self);
+    self->ConstructL( KMMFDataBufferDefaultBufferSize );
+    CleanupStack::Pop(); // self
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::NewL <<"), RThread().Id().operator TUint()));
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::NewL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CVSMMFDataBuffer* CVSMMFDataBuffer::NewL( TInt aMaxBufferSize )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::NewL() >>"), RThread().Id().operator TUint()));
+    CVSMMFDataBuffer* self = new ( ELeave ) CVSMMFDataBuffer;
+    CleanupStack::PushL(self);
+    self->ConstructL( aMaxBufferSize );
+    CleanupStack::Pop(); // self
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::NewL <<"), RThread().Id().operator TUint()));
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::~CVSMMFDataBuffer
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CVSMMFDataBuffer::~CVSMMFDataBuffer()
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::~CVSMMFDataBuffer() >>"), RThread().Id().operator TUint()));
+    delete[] iData;
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::~CVSMMFDataBuffer() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::ReAllocBufferL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::ReAllocBufferL( TInt aMaxBufferSize )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::ReAllocBufferL() >>"), RThread().Id().operator TUint()));
+    if ( !iIsBufferSet )
+        {
+        TUint8* tmp = new (ELeave) TUint8[aMaxBufferSize];
+        delete[] iData;
+        iData = tmp;
+        iPtr.Set( iData, 0, aMaxBufferSize );
+        iMaxBufferSize = aMaxBufferSize;
+        }
+    else
+        {
+        User::Leave( KErrNotSupported );
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::ReAllocBufferL() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::NeedsReset
+// -----------------------------------------------------------------------------
+//
+TBool CVSMMFDataBuffer::NeedsReset() const
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::NeedsReset() ><"), RThread().Id().operator TUint()));
+    return iNeedsReset;
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetNeedsReset
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetNeedsReset( TBool aNeedsReset )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetNeedsReset() >>"), RThread().Id().operator TUint()));
+    iNeedsReset = aNeedsReset;
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetNeedsReset() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::Reset
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::Reset()
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Reset() >>"), RThread().Id().operator TUint()));
+    iPtr.Zero();
+    SetNeedsReset( EFalse );
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Reset() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::Data
+// -----------------------------------------------------------------------------
+//
+TDes8& CVSMMFDataBuffer::Data()
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Data() >>"), RThread().Id().operator TUint()));
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Data() <<"), RThread().Id().operator TUint()));
+    return iPtr;
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::Data
+// -----------------------------------------------------------------------------
+//
+const TDesC8& CVSMMFDataBuffer::Data() const
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Data() >>"), RThread().Id().operator TUint()));
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Data() <<"), RThread().Id().operator TUint()));
+    return iPtr;
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetStatus
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetStatus( TBufferStatus aStatus )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetStatus() >>"), RThread().Id().operator TUint()));
+    CMMFBuffer::SetStatus( aStatus );
+    if ( iStatus == EBeingFilled )
+        {
+        Reset();
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetStatus() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetRequestSizeL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetRequestSizeL( TInt aSize )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetRequestSizeL() >>"), RThread().Id().operator TUint()));
+    if ( aSize < 0 )
+        {
+        User::Leave( KErrUnderflow );
+        }
+    else if ( aSize > iPtr.MaxLength() )
+        {
+        User::Leave( KErrOverflow );
+        }
+    else
+        {
+        iRequestSize = aSize;
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetRequestSizeL() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::BufferSize
+// -----------------------------------------------------------------------------
+//
+TUint CVSMMFDataBuffer::BufferSize() const
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::BufferSize() >>"), RThread().Id().operator TUint()));
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::BufferSize() <<"), RThread().Id().operator TUint()));
+    return iPtr.Length();
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetPosition
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetPosition( TUint aPosition )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetPosition() >>"), RThread().Id().operator TUint()));
+    if ( aPosition <= (TUint)iPtr.Length() )
+        {
+        iPosition = aPosition;
+        }
+    else
+        {
+        iPosition = (TUint)iPtr.Length();   // Tried to position beyond end of
+                                            // data
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetPosition() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetFrameBufferL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetFrameBufferL( MFrameBuffer* aFrameBuffer )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetFrameBuffer() >>"), RThread().Id().operator TUint()));
+    iFrameBuffer = aFrameBuffer;
+    //Buffer is valid
+    iIsBufferSet = ETrue;
+    if ( aFrameBuffer == NULL )
+        {
+        iPtr.Set( iData, 0, iMaxBufferSize );
+        }
+    else
+        {
+        Reset();
+        TPtrC8 ptr( *iFrameBuffer->DataL( 0 ) );
+        iPtr.Set((TUint8*)ptr.Ptr(), ptr.Size(), ptr.Size());
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetFrameBuffer() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetFrameBufferL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetFrameBufferL( MCameraBuffer* aCameraBuffer )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetFrameBuffer() >>"), RThread().Id().operator TUint()));
+    iCameraBuffer = aCameraBuffer;
+    //Buffer is valid
+    iIsBufferSet = ETrue;
+    if ( aCameraBuffer == NULL )
+        {
+        iPtr.Set( iData, 0, iMaxBufferSize );
+        }
+    else
+        {
+        Reset();
+        // Take the latest frame data from buffer should be always 0,
+        // but if buffer contains more than 1 frame could be something else
+        TPtrC8 ptr( *iCameraBuffer->DataL( iCameraBuffer->NumFrames() - 1 ) );
+        iPtr.Set((TUint8*)ptr.Ptr(), ptr.Size(), ptr.Size());
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetFrameBuffer() <<"), RThread().Id().operator TUint()));
+    }
+
+
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::ReleaseL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::ReleaseL()
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Release() >>"), RThread().Id().operator TUint()));
+    if( iFrameBuffer )
+        {
+        iFrameBuffer->Release();
+        SetFrameBufferL( (MFrameBuffer*)NULL );
+        }
+    else if( iCameraBuffer )
+    	{
+    	iCameraBuffer->Release();
+        SetFrameBufferL( (MCameraBuffer*)NULL );
+    	}
+    else
+        {
+        if ( iPtr.Ptr() != iData )
+            {
+            iPtr.Set( iData, 0, iMaxBufferSize );
+            }
+        if( NeedsReset() )
+            {
+            Reset();
+            }
+        }
+
+    //Buffer is no longer valid
+    iIsBufferSet = EFalse;
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::Release() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::SetBufferOffset
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::SetBufferOffset( TInt aOffset )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetBufferOffset() >>"), RThread().Id().operator TUint()));
+    if ( !iIsBufferSet )
+        {
+        __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetBufferOffset(): Length = %d, Offset = %d"), RThread().Id().operator TUint(), iPtr.Length(), aOffset));
+        iPtr.Set( iData + aOffset, iPtr.Length() - aOffset, iMaxBufferSize );
+        }
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::SetBufferOffset() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::CVSMMFDataBuffer
+// -----------------------------------------------------------------------------
+//
+CVSMMFDataBuffer::CVSMMFDataBuffer() :
+    CMMFDataBuffer( KUidMmfDataBuffer ), iPtr(0,0,0), iIsBufferSet(EFalse)
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::CVSMMFDataBuffer() >>"), RThread().Id().operator TUint()));
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::CVSMMFDataBuffer() <<"), RThread().Id().operator TUint()));
+    }
+
+// -----------------------------------------------------------------------------
+// CVSMMFDataBuffer::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CVSMMFDataBuffer::ConstructL( TInt aMaxBufferSize )
+    {
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::ConstructL() >>"), RThread().Id().operator TUint()));
+    iData = new (ELeave) TUint8[aMaxBufferSize];
+    iPtr.Set( iData, 0, aMaxBufferSize );
+    iMaxBufferSize = aMaxBufferSize;
+    __IF_DEBUG(Print(_L("VideoSource[%d]: CVSMMFDataBuffer::ConstructL() <<"), RThread().Id().operator TUint()));
+    }
+
+//  End of File