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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
#ifndef __XN_DATA_PROCESSOR_H__
#define __XN_DATA_PROCESSOR_H__
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnDeviceSensor.h"
#include "XnDeviceSensorProtocol.h"
#include <XnLog.h>
/**
* Base class for all data processors.
*/
class XnDataProcessor
{
public:
XnDataProcessor(XnDevicePrivateData* pDevicePrivateData, const XnChar* csName);
virtual ~XnDataProcessor();
//---------------------------------------------------------------------------
// Methods
//---------------------------------------------------------------------------
public:
/**
* Initializes a Data Processor.
*
* @param pDevicePrivateData [in] A pointer to the device.
* @param csName [in] The name of the stream.
*/
virtual XnStatus Init();
/**
* Handles some data from this stream.
*
* @param pHeader [in] A pointer to current packet header.
* @param pData [in] A pointer to the data.
* @param nDataOffset [in] The offset of this data chunk inside current packet.
* @param nDataSize [in] Size of the data in bytes.
*/
void ProcessData(const XnSensorProtocolResponseHeader* pHeader, const XnUChar* pData, XnUInt32 nDataOffset, XnUInt32 nDataSize);
inline XnBool ShouldUseHostTimestamps() { return m_bUseHostTimestamps; }
//---------------------------------------------------------------------------
// Virtual Functions
//---------------------------------------------------------------------------
protected:
virtual void ProcessPacketChunk(const XnSensorProtocolResponseHeader* pHeader, const XnUChar* pData, XnUInt32 nDataOffset, XnUInt32 nDataSize) = 0;
virtual void OnPacketLost();
//---------------------------------------------------------------------------
// Utility Functions
//---------------------------------------------------------------------------
protected:
/*
* Gets a calculated timestamp from the device timestamp.
*
* @param nDeviceTimeStamp [in] The device TS to translate.
*/
virtual XnUInt64 CreateTimestampFromDevice(XnUInt32 nDeviceTimeStamp);
XnUInt64 GetHostTimestamp();
//---------------------------------------------------------------------------
// Class Members
//---------------------------------------------------------------------------
protected:
XnDevicePrivateData* m_pDevicePrivateData;
/* The number of bytes received so far (since last time this member was reset). */
XnUInt32 m_nBytesReceived;
/* Stores last packet ID */
XnUInt16 m_nLastPacketID;
/* The name of the stream. */
const XnChar* m_csName;
private:
/* Data used for calculating timestamps. */
XnTimeStampData m_TimeStampData;
XnBool m_bUseHostTimestamps;
};
#endif //__XN_DATA_PROCESSOR_H__
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