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/****************************************************************************
* *
* PrimeSense Sensor 5.x Alpha *
* Copyright (C) 2011 PrimeSense Ltd. *
* *
* This file is part of PrimeSense Sensor. *
* *
* PrimeSense Sensor is free software: you can redistribute it and/or modify*
* it under the terms of the GNU Lesser General Public License as published *
* by the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* PrimeSense Sensor is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with PrimeSense Sensor. If not, see <http://www.gnu.org/licenses/>.*
* *
****************************************************************************/
#ifndef __XN_MULTI_FRAME_BUFFER_H__
#define __XN_MULTI_FRAME_BUFFER_H__
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include <XnPlatform.h>
#include <XnCore/XnBuffer.h>
#include <XnEvent.h>
#include "XnBufferPool.h"
//---------------------------------------------------------------------------
// Types
//---------------------------------------------------------------------------
class XN_DDK_CPP_API XnFrameBufferManager
{
public:
XnFrameBufferManager(XnBufferPool* pBufferPool);
~XnFrameBufferManager();
XnStatus Init(XnUInt32 nBufferSize);
XnStatus Reallocate(XnUInt32 nBufferSize);
void Free();
inline XnBuffer* GetWriteBuffer()
{
// NOTE: no need to lock buffer, as we assume the same thread is the one that is responsible
// for marking working buffer as stable.
return m_pWorkingBuffer;
}
void MarkWriteBufferAsStable(XnUInt64 nTimestamp, XnUInt32* pnFrameID);
void ReadLastStableBuffer(XnBuffer** ppBuffer, XnUInt64* pnTimestamp, XnUInt32* pnFrameID);
XnStatus CopyLastStableBuffer(void* pDest, XnUInt32 nDestSize, XnUInt32* pnWritten);
inline XnUInt32 GetLastFrameID() const { return m_nStableFrameID; }
XN_DECLARE_EVENT_2ARG(NewFrameEvent, NewFrameEventInterface, XnFrameBufferManager*, pTripleBuffer, XnUInt64, nTimestamp);
NewFrameEventInterface& OnNewFrameEvent() { return m_NewFrameEvent; }
private:
XnBufferPool* m_pBufferPool;
XnBuffer* m_pWorkingBuffer;
XnBuffer* m_pStableBuffer;
XnUInt32 m_nStableFrameID;
XnUInt64 m_nStableTimestamp;
NewFrameEvent m_NewFrameEvent;
XN_CRITICAL_SECTION_HANDLE m_hLock;
};
#endif //__XN_MULTI_FRAME_BUFFER_H__
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