sl@0: // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include <fbs.h>
sl@0: #include <mmf/server/mmfdatabuffer.h>
sl@0: #include "mdfvideodecoderbuffermanager.h"
sl@0: 
sl@0: #define MDFVIDEODECODERBUFFERMANAGER_DEBUG 1
sl@0: 
sl@0: #if defined (SYMBIAN_MDFVIDEODECODERBUFFERMANAGER_DEBUG)
sl@0: #define DEBUG_PRINT( x ) ( RDebug::Print( x ) )
sl@0: #define DEBUG_PRINT2( x,y ) ( RDebug::Print( x,y ) )
sl@0: #define DEBUG_PRINT3( x,y,z ) ( RDebug::Print( x,y,z ) )
sl@0: 
sl@0: #else
sl@0: #define DEBUG_PRINT( x )
sl@0: #define DEBUG_PRINT2( x,y ) 
sl@0: #define DEBUG_PRINT3( x,y,z ) 
sl@0: #endif // defined (SYMBIAN_MDFVIDEODECODERBUFFERMANAGER_DEBUG)
sl@0: 
sl@0: CVideoDataBuffer::CVideoDataBuffer()
sl@0: 	{
sl@0: 	}
sl@0: 	
sl@0: TUint CVideoDataBuffer::Length()
sl@0: 	{
sl@0: 	return iSize;
sl@0: 	}
sl@0: 
sl@0: CVideoDataBuffer* CVideoDataBuffer::NewL(TUint aSize)
sl@0: 	{
sl@0: 	CVideoDataBuffer* self = new (ELeave) CVideoDataBuffer;
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aSize);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 	
sl@0: void CVideoDataBuffer::ConstructL(TUint aBufferSize)
sl@0: 	{
sl@0: 	iSize = aBufferSize;
sl@0: 	CMMFDescriptorBuffer* buffer = CMMFDescriptorBuffer::NewL(aBufferSize);
sl@0: 	TDes8& des = buffer->Data();
sl@0: 	TUint8* ptr = const_cast<TUint8*>(des.Ptr());
sl@0: 	iVideoInputBuffer.iData.Set(ptr, des.Length(), des.MaxLength());
sl@0: 	iMmfBuffer = buffer;
sl@0: 	}
sl@0: 
sl@0: CVideoDataBuffer::operator CMMFBuffer*()
sl@0: 	{
sl@0: 	return iMmfBuffer;
sl@0: 	}
sl@0: 	
sl@0: CVideoDataBuffer::operator TVideoInputBuffer&()
sl@0: 	{
sl@0: 	return iVideoInputBuffer;
sl@0: 	}
sl@0: 	
sl@0: 
sl@0: 
sl@0: TBool CVideoDataBuffer::operator== (const CMMFBuffer* aBuffer) const
sl@0: 	{
sl@0: 	return (aBuffer == iMmfBuffer); 	
sl@0: 	}
sl@0: 
sl@0: TBool CVideoDataBuffer::operator== (const TVideoInputBuffer& aVideoInputBuffer) const
sl@0: 	{
sl@0: 	// compare the data pointers
sl@0: 	return iVideoInputBuffer.iData == aVideoInputBuffer.iData;
sl@0: 	}
sl@0: 
sl@0: CVideoDataBuffer::~CVideoDataBuffer()
sl@0: 	{
sl@0: 	delete iMmfBuffer;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CVideoFrameBuffer::CVideoFrameBuffer(TSize aFrameSize, 
sl@0: 											TUncompressedVideoFormat aFormat, 
sl@0: 											TDisplayMode aDisplayMode) 
sl@0: 	: iRawPtr(0,0),
sl@0: 	iFrameSize(aFrameSize),
sl@0: 	iVideoFormat(aFormat),
sl@0: 	iDisplayMode(aDisplayMode)
sl@0: 	{
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: CVideoFrameBuffer* CVideoFrameBuffer::NewL(TSize aFrameSize, 
sl@0: 													TUncompressedVideoFormat aFormat,		
sl@0: 													TDisplayMode aDisplayMode)
sl@0: 	{
sl@0: 	CVideoFrameBuffer* self = new (ELeave) CVideoFrameBuffer(aFrameSize, aFormat, aDisplayMode);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 	
sl@0: void CVideoFrameBuffer::SetLastBuffer(TBool aLastBuffer)
sl@0: 	{
sl@0: 	iLastBuffer = aLastBuffer;
sl@0: 	}
sl@0: 	
sl@0: TBool CVideoFrameBuffer::LastBuffer()
sl@0: 	{
sl@0: 	return iLastBuffer;
sl@0: 	}
sl@0: 	
sl@0: void CVideoFrameBuffer::ConstructL()
sl@0: 	{
sl@0: 	iFrameBufferSize = CFbsBitmap::ScanLineLength(iFrameSize.iWidth, iDisplayMode) *
sl@0: 														iFrameSize.iHeight;
sl@0: 	Mem::FillZ(&iVideoPicture, sizeof(TVideoPicture));
sl@0: 	if(iVideoFormat.iDataFormat == ERgbFbsBitmap) 
sl@0: 		{
sl@0: 		iBitmap = new(ELeave)CFbsBitmap;
sl@0: 		User::LeaveIfError(iBitmap->Create(iFrameSize, iDisplayMode));				
sl@0: 		DEBUG_PRINT2(_L("BufferManager: Created bitmap at 0x%08x"), iBitmap);
sl@0: 		
sl@0: 		iVideoPicture.iData.iRgbBitmap = iBitmap;
sl@0: 		iBitmap->LockHeap();
sl@0: 		TRAPD(err, iMmfBuffer = CMMFPtrBuffer::NewL(TPtr8(reinterpret_cast<TUint8*>(iBitmap->DataAddress()),
sl@0: 												iFrameBufferSize,
sl@0: 												iFrameBufferSize)) );
sl@0: 		iBitmap->UnlockHeap();
sl@0: 		User::LeaveIfError(err);
sl@0: 		}
sl@0: 	else if((iVideoFormat.iDataFormat == ERgbRawData) || (iVideoFormat.iDataFormat == EYuvRawData))
sl@0: 		{
sl@0: 		iRawBuffer  = HBufC8::NewMaxL(iFrameBufferSize);
sl@0: 		iRawPtr.Set(iRawBuffer->Des());
sl@0: 		iMmfBuffer = CMMFPtrBuffer::NewL(iRawPtr);
sl@0: 		iVideoPicture.iData.iRawData = &iRawPtr;
sl@0: 		}
sl@0: 	iVideoPicture.iData.iDataFormat = iVideoFormat.iDataFormat;
sl@0: 	iVideoPicture.iData.iDataSize = iFrameSize;
sl@0: 	}
sl@0: 
sl@0: CVideoFrameBuffer::operator CMMFBuffer*()
sl@0: 	{
sl@0: 	return iMmfBuffer;
sl@0: 	}
sl@0: 	
sl@0: CVideoFrameBuffer::operator TVideoPicture&()
sl@0: 	{
sl@0: 	return iVideoPicture;
sl@0: 	}
sl@0: 
sl@0: CVideoFrameBuffer::operator CMMFBuffer&()
sl@0: 	{
sl@0: 	return *iMmfBuffer;
sl@0: 	}
sl@0: 	
sl@0: CVideoFrameBuffer::operator TVideoPicture*()
sl@0: 	{
sl@0: 	return &iVideoPicture;
sl@0: 	}
sl@0: 	
sl@0: void CVideoFrameBuffer::LockFrameBufferHeap()
sl@0: 	{
sl@0: 	iBitmap->LockHeap();
sl@0: 	iHeapLocked = ETrue;
sl@0: 	}
sl@0: 
sl@0: void CVideoFrameBuffer::UnlockFrameBufferHeap()
sl@0: 	{
sl@0: 	if (iHeapLocked)
sl@0: 		{
sl@0: 		iBitmap->UnlockHeap();
sl@0: 		iHeapLocked = EFalse;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TBool CVideoFrameBuffer::operator== (const CMMFBuffer* aBuffer) const
sl@0: 	{
sl@0: 	return (aBuffer == iMmfBuffer); 	
sl@0: 	}
sl@0: 
sl@0: TBool CVideoFrameBuffer::operator== (const TVideoPicture& aVideoInputBuffer) const
sl@0: 	{
sl@0: 	// compare the data pointers - cheat, it is the same pointer for the bitmap and 
sl@0: 	// raw data
sl@0: 	return iVideoPicture.iData.iRawData == aVideoInputBuffer.iData.iRawData;
sl@0: 	}
sl@0: 
sl@0: CVideoFrameBuffer::~CVideoFrameBuffer()
sl@0: 	{
sl@0: 	UnlockFrameBufferHeap();
sl@0: 	delete iMmfBuffer;
sl@0: 	delete iBitmap;
sl@0: 	delete iRawBuffer;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /** 
sl@0:  Constructs a new instance of CMDFVideoDecoderBufferManager.
sl@0:  @return    "CMDFVideoDecoderBufferManager*"
sl@0:             A pointer to the newly constructed CMDFVideoDecoderBufferManager
sl@0:  */
sl@0: CMdfVideoDecoderBufferManager* CMdfVideoDecoderBufferManager::NewL()
sl@0: 	{
sl@0: 	CMdfVideoDecoderBufferManager* s = new(ELeave) CMdfVideoDecoderBufferManager;
sl@0: 	CleanupStack::PushL(s);
sl@0: 	s->ConstructL();
sl@0: 	CleanupStack::Pop(s);
sl@0: 	return (static_cast<CMdfVideoDecoderBufferManager*>(s));
sl@0: 	}
sl@0: 
sl@0: CMdfVideoDecoderBufferManager::CMdfVideoDecoderBufferManager()
sl@0: 	{
sl@0: 	}
sl@0: void CMdfVideoDecoderBufferManager::ConstructL()
sl@0: 	{
sl@0: 	RFbsSession::Connect();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0:  Default destructor
sl@0:  */
sl@0: CMdfVideoDecoderBufferManager::~CMdfVideoDecoderBufferManager()
sl@0: 	{
sl@0: 	// get rid of input buffers
sl@0: 	delete iInputBuffer;
sl@0: 	// cleanup frame buffer arrays	
sl@0: 	iEmptyFrameBuffers.ResetAndDestroy();
sl@0: 	iFilledFrameBuffers.ResetAndDestroy();
sl@0: 	iFrameBuffersInUse.ResetAndDestroy();
sl@0: 	RFbsSession::Disconnect();
sl@0: 	
sl@0: 	DEBUG_PRINT(_L("BufferManager: Closing down"));
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Initializes the decoder buffer manager.
sl@0:  @param		"const TUncompressedVideoFormat& aFormat"
sl@0:  			The image format to decode into
sl@0:  */
sl@0: void CMdfVideoDecoderBufferManager::Init(const TUncompressedVideoFormat& aFormat)
sl@0: 	{
sl@0: 	DEBUG_PRINT(_L("BufferManager: Initializing"));
sl@0: 
sl@0: 	iFormat = aFormat;
sl@0: 	// The actual frame size will come from the VOL headers.
sl@0: 	// Set an initial value for iFrameBufferSize so we can get
sl@0: 	// the VOL headers themselves.
sl@0: 	// Also ensure we allow one free output buffer.
sl@0: 	iFrameBufferSize = 1024; // 1k
sl@0: 	iMaxFrameBuffers = 1;
sl@0: 	
sl@0: 	iInputBufferInUse = EFalse;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Creates a new empty input buffer.
sl@0:  @param		"TUint aBufferSize"
sl@0:  			The requested buffer size.
sl@0:  @return	"TVideoInputBuffer&"
sl@0:  			An empty input buffer.
sl@0:  @leave		May leave with KErrInUse if no input buffer is available, or with KErrNoMemory
sl@0:  			if a buffer cannot be created or adjusted. 			 			
sl@0:  */
sl@0: CVideoDataBuffer& CMdfVideoDecoderBufferManager::CreateDataBufferL(TUint aBufferSize)
sl@0: 	{
sl@0: 	// We use one input buffer and one overflow buffer.
sl@0: 
sl@0: 	// If the app requests another buffer before this one has been processed, then leave.
sl@0: 	if(iInputBufferInUse) 
sl@0: 		{
sl@0: 		User::Leave(KErrInUse);
sl@0: 		}
sl@0: 		
sl@0: 	if(aBufferSize < 1)
sl@0: 		{
sl@0: 		User::Leave(KErrArgument);
sl@0: 		}
sl@0: 	
sl@0: 	// Create or adjust the input buffer
sl@0: 	
sl@0: 	if(!iInputBuffer) 
sl@0: 		{
sl@0: 		iInputBuffer = CVideoDataBuffer::NewL(aBufferSize);
sl@0: 		}	
sl@0: 	else if(iInputBuffer->Length() != aBufferSize)
sl@0: 		{
sl@0: 		// NB don't use ReAllocL() as it will panic if the buffer is shrinking
sl@0: 		// Use temp variable		
sl@0: 		CVideoDataBuffer* tempBuffer = CVideoDataBuffer::NewL(aBufferSize);
sl@0: 
sl@0: 		// Coverity reports a leave_without_push error here because
sl@0: 		// CVideoDataBuffer contains a frame buffer member which could contain
sl@0: 		// a CFbsBitmap member which can panic during its destructor. The panic
sl@0: 		// has a trapped leave and for some reason coverity does not recognise it.
sl@0: 		// Mark as false positive
sl@0: 		// coverity[leave_without_push : FALSE]
sl@0: 		delete iInputBuffer;
sl@0: 		iInputBuffer = NULL;
sl@0: 		iInputBuffer = tempBuffer;		
sl@0: 		}
sl@0: 	return *iInputBuffer;	
sl@0: 	}
sl@0: 
sl@0: void CMdfVideoDecoderBufferManager::ReturnDataBufferL(TVideoInputBuffer& aInputBuffer)
sl@0: 	{
sl@0: 	if (!iInputBuffer)
sl@0: 		{
sl@0: 		User::Leave(KErrNotFound);
sl@0: 		}	
sl@0: 	// if this buffer isn't the input buffer, leave
sl@0: 	if(! (*iInputBuffer == aInputBuffer) )
sl@0: 		{
sl@0: 		User::Leave(KErrNotFound);	
sl@0: 		}
sl@0: 	// if the buffer is not in use, leave
sl@0: 	if(!iInputBufferInUse)
sl@0: 		{
sl@0: 		User::Leave(KErrInUse);	
sl@0: 		}
sl@0: 	
sl@0: 	// finished with input buffer - mark it unused
sl@0: 	iInputBufferInUse = EFalse;
sl@0: 	}
sl@0: 	
sl@0: CVideoDataBuffer& CMdfVideoDecoderBufferManager::GetDataBufferL()
sl@0: 	{
sl@0: 	if (!iInputBuffer)
sl@0: 		{
sl@0: 		User::Leave(KErrNotFound);
sl@0: 		}
sl@0: 	if (iInputBufferInUse)
sl@0: 		{
sl@0: 		User::Leave(KErrInUse);
sl@0: 		}
sl@0: 	iInputBufferInUse = ETrue;
sl@0: 	return *iInputBuffer;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the number of available input buffers.
sl@0:  @return	"TInt"
sl@0:  			The number of available input buffers.
sl@0:  */
sl@0: TInt CMdfVideoDecoderBufferManager::DataBuffersAvailable() const
sl@0: 	{
sl@0: 	// this plugin has one input buffer. if it is in use (i.e. the client hasn't been
sl@0: 	// notified with MdvppNewBuffers()) then return 0.
sl@0: 	return ((iInputBufferInUse) ? 0 : 1);
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Sets the frame size.
sl@0:  @param		"const TSize& aSize"
sl@0:  			The frame size.
sl@0:  */
sl@0: void CMdfVideoDecoderBufferManager::SetFrameSize(const TSize& aSize)
sl@0: 	{
sl@0: 	iFrameSize = aSize;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the frame size.
sl@0:  @return	"const TSize&"
sl@0:  			The frame size.
sl@0:  */
sl@0: const TSize& CMdfVideoDecoderBufferManager::FrameSize() const
sl@0: 	{
sl@0: 	return iFrameSize;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Sets the frame buffer size.
sl@0:  @param		"TInt aSize"
sl@0:  			The frame buffer size.
sl@0:  */
sl@0: void CMdfVideoDecoderBufferManager::SetFrameBufferSize(TInt aSize)
sl@0: 	{
sl@0: 	iFrameBufferSize = aSize;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the frame buffer size.
sl@0:  @return	"TInt"
sl@0:  			The frame buffer size.
sl@0:  */
sl@0: TInt CMdfVideoDecoderBufferManager::FrameBufferSize() const
sl@0: 	{
sl@0: 	return iFrameBufferSize;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the maximum number of frame buffers.
sl@0:  @return	"TInt"
sl@0:  			The maximum number of frame buffers.
sl@0:  */
sl@0: TInt CMdfVideoDecoderBufferManager::MaxFrameBuffers() const
sl@0: 	{
sl@0: 	return iMaxFrameBuffers;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the number of available pictures (full output buffers).
sl@0:  @return	"TInt"
sl@0:  			The number of available pictures.
sl@0:  */
sl@0: TInt CMdfVideoDecoderBufferManager::FilledFrameBuffersAvailable() const
sl@0: 	{
sl@0: 	return ((iFilledFrameBuffers.Count() > 0) ? 1 : 0);
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the number of available frame buffers.
sl@0:  @return	"TInt"
sl@0:  			The number of available frame buffers.
sl@0:  */
sl@0: TInt CMdfVideoDecoderBufferManager::EmptyFrameBuffersAvailable() const
sl@0: 	{
sl@0: 	return ((iEmptyFrameBuffers.Count() < iMaxFrameBuffers) ? 1 : 0);
sl@0: 	}
sl@0: 	
sl@0: 	
sl@0: /** 
sl@0:  Gets the first available framebuffer
sl@0:  @return	"TVideoPicture&"
sl@0:  			A picture.
sl@0:  @leave		May leave with KErrNotReady if no picture is available. 			
sl@0:  */
sl@0: CVideoFrameBuffer& CMdfVideoDecoderBufferManager::GetEmptyFrameBufferL(TBool aLockHeap)
sl@0: 	{
sl@0: 	DEBUG_PRINT2(_L("Get Empty Frame Buffer avail: %d"),iEmptyFrameBuffers.Count());
sl@0: 
sl@0: 	if(iEmptyFrameBuffers.Count() == 0) 
sl@0: 		{
sl@0: 		User::Leave(KErrNotReady);
sl@0: 		}
sl@0: 	CVideoFrameBuffer* frameBuf = iEmptyFrameBuffers[0];
sl@0: 	iFrameBuffersInUse.AppendL(frameBuf);
sl@0: 	iEmptyFrameBuffers.Remove(0);
sl@0: 	if (aLockHeap)
sl@0: 		{
sl@0: 		frameBuf->LockFrameBufferHeap();
sl@0: 		}
sl@0: 	return *frameBuf;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: /** 
sl@0:  Gets the first available picture (full frame buffer).
sl@0:  @return	"TVideoPicture&"
sl@0:  			A picture.
sl@0:  @leave		May leave with KErrNotReady if no picture is available. 			
sl@0:  */
sl@0: CVideoFrameBuffer& CMdfVideoDecoderBufferManager::GetFilledFrameBufferL(TBool aLockHeap)
sl@0: 	{
sl@0: 	DEBUG_PRINT2(_L("Get Filled Frame Buffer avail: %d"),iFilledFrameBuffers.Count());
sl@0: 
sl@0: 	if(iFilledFrameBuffers.Count() == 0) 
sl@0: 		{		
sl@0: 		User::Leave(KErrNotReady);
sl@0: 		}
sl@0: 	CVideoFrameBuffer* frameBuf = iFilledFrameBuffers[0];
sl@0: 	iFilledFrameBuffers.Remove(0);
sl@0: 	iFrameBuffersInUse.AppendL(frameBuf);
sl@0: 	
sl@0: 	if (aLockHeap)
sl@0: 		{
sl@0: 		frameBuf->LockFrameBufferHeap();
sl@0: 		}
sl@0: 	return *frameBuf;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets the last displayed picture.
sl@0:  Used by Direct Screen Access to redraw.
sl@0:  @return	"TPictureData&"
sl@0:  			The last displayed picture.
sl@0:  @leave		May leave with KErrNotReady if no picture is available. 			
sl@0:  */
sl@0: const TPictureData& CMdfVideoDecoderBufferManager::LastPictureL() const
sl@0: 	{
sl@0: 	// it's a union, so we can check either iRgbBitmap or iRawData
sl@0: 	if(!iLastDisplayedFrame.iRgbBitmap) 
sl@0: 		{
sl@0: 		User::Leave(KErrNotReady);
sl@0: 		}
sl@0: 	return iLastDisplayedFrame;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Gets a new empty frame buffer.
sl@0:  @param		aDisplayMode
sl@0:  			The display mode of the bitmap to be created.
sl@0:  @return	"TVideoPicture&"
sl@0:  			A frame buffer.
sl@0:  @leave		May leave with KErrNotReady if no frame buffer is available, or if there
sl@0:  			is no memory to create a new one. 
sl@0:  */
sl@0: CVideoFrameBuffer& CMdfVideoDecoderBufferManager::CreateFrameBufferL(TDisplayMode aDisplayMode) 
sl@0: 	{
sl@0: 	CVideoFrameBuffer* frameBuffer = CVideoFrameBuffer::NewL(iFrameSize, iFormat, aDisplayMode);
sl@0: 	CleanupStack::PushL(frameBuffer);
sl@0: 	iEmptyFrameBuffers.AppendL(frameBuffer);
sl@0: 	CleanupStack::Pop(frameBuffer);
sl@0: 	
sl@0: 	DEBUG_PRINT2(_L("BufferManager: Created frame buffer; %d buffers in use"), iEmptyFrameBuffers.Count());
sl@0: 	return *frameBuffer;
sl@0: 	}
sl@0: 
sl@0: /** 
sl@0:  Returns a used picture to the buffer manager for disposal.
sl@0:  @param		"TVideoPicture* aFrameBuffer"
sl@0:  			A used picture.
sl@0:  @param		"TBool aSaveLast"
sl@0:  			Save this picture as the last displayed (for redraw).
sl@0:  @leave		May leave with KErrNotFound if the picture does not exist. 			
sl@0:  */
sl@0: void CMdfVideoDecoderBufferManager::ReturnFrameBufferL(TVideoPicture& aFrameBuffer, CVideoFrameBuffer::TFrameBufferState aState)
sl@0: 	{
sl@0: 	DEBUG_PRINT(_L("Return Frame Buffer from TVideoPicture"));
sl@0: 
sl@0: 	TInt bufIndex;
sl@0: 	User::LeaveIfError(bufIndex = FindFrameBuffer(aFrameBuffer));
sl@0: 	// remove from the list of avaible buffers
sl@0: 	CVideoFrameBuffer* frameBuf = iFrameBuffersInUse[bufIndex];
sl@0: 	frameBuf->UnlockFrameBufferHeap();
sl@0: 	if (aState == CVideoFrameBuffer::EEmptied)
sl@0: 		{
sl@0: 		DEBUG_PRINT(_L("Added to empty pool"));
sl@0: 		iEmptyFrameBuffers.AppendL(frameBuf);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		DEBUG_PRINT(_L("Added to filled pool"));
sl@0: 		iFilledFrameBuffers.AppendL(frameBuf);
sl@0: 		}
sl@0: 	iFrameBuffersInUse.Remove(bufIndex);
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: void CMdfVideoDecoderBufferManager::ReturnFrameBufferL(CMMFBuffer* aBuffer, 
sl@0: 									CVideoFrameBuffer::TFrameBufferState aState,
sl@0: 									TBool aLastBuffer)
sl@0: 	{
sl@0: 	DEBUG_PRINT(_L("Return Frame buffer from CMMFBuffer"));
sl@0: 	TInt bufIndex;
sl@0: 	User::LeaveIfError(bufIndex = FindFrameBuffer(aBuffer));
sl@0: 	// remove from the list of avaible buffers
sl@0: 	CVideoFrameBuffer* frameBuf = iFrameBuffersInUse[bufIndex];
sl@0: 	frameBuf->SetLastBuffer(aLastBuffer);
sl@0: 	frameBuf->UnlockFrameBufferHeap();
sl@0: 	if (aState == CVideoFrameBuffer::EEmptied)
sl@0: 		{
sl@0: 		DEBUG_PRINT(_L("Added to empty pool"));
sl@0: 		iEmptyFrameBuffers.AppendL(frameBuf);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		DEBUG_PRINT(_L("Added to filled pool"));
sl@0: 		iFilledFrameBuffers.AppendL(frameBuf);
sl@0: 		}
sl@0: 	iFrameBuffersInUse.Remove(bufIndex);
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: // private methods
sl@0: 
sl@0: TInt CMdfVideoDecoderBufferManager::FindFrameBuffer(const TVideoPicture& aFrameBuffer) const
sl@0: 	{
sl@0: 	TInt theCount = iFrameBuffersInUse.Count();
sl@0: 	TInt found = KErrNotFound;
sl@0: 	for(TInt i = 0; i < theCount; i++) 
sl@0: 		{
sl@0: 		if(*iFrameBuffersInUse[i] == aFrameBuffer) 
sl@0: 			{
sl@0: 			found = i;
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	return found;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TInt CMdfVideoDecoderBufferManager::FindFrameBuffer(const CMMFBuffer* aBuffer) const
sl@0: 	{
sl@0: 	TInt theCount = iFrameBuffersInUse.Count();
sl@0: 	TInt found = KErrNotFound;
sl@0: 	for(TInt i = 0; i < theCount; i++) 
sl@0: 		{
sl@0: 		if(*iFrameBuffersInUse[i] == aBuffer) 
sl@0: 			{
sl@0: 			found = i;
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	return found;
sl@0: 	}
sl@0: 
sl@0: // end