timebuff.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#ifndef _TIMEBUFF_H_
#define _TIMEBUFF_H_

#include "ihxpckts.h"
#include "hxtbuf.h"
#include "hxstring.h"

/****************************************************************************
 * 
 *	Class:
 *
 *		CHXTimeStampedBuffer
 *
 *	Purpose:
 *
 *		CHXBuffer with a timestamp
 *
 */
class CHXTimeStampedBuffer : public IHXBuffer, public IHXTimeStampedBuffer
{
public:
    	/*
	 *	IUnknown methods
	 */
    STDMETHOD(QueryInterface)	(THIS_
								REFIID riid,
								void** ppvObj);

    STDMETHOD_(ULONG32,AddRef)	(THIS);

    STDMETHOD_(ULONG32,Release)	(THIS);

    /* IHXTimeStamped Buffer Methods */

    STDMETHOD_(UINT32,GetTimeStamp)(THIS);

    STDMETHOD(SetTimeStamp)(THIS_
			    UINT32	ulTimeStamp);

    private:

	LONG32					m_lRefCount;
	UCHAR*					m_pData;
	ULONG32					m_ulLength;
	UINT32					m_ulTimeStamp;

private:

	~CHXTimeStampedBuffer();

	PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME

public:
	CHXTimeStampedBuffer()
		: m_lRefCount(0)
		, m_pData(NULL)
		, m_ulLength(0)
		, m_ulTimeStamp(0)
		{
		};

	inline CHXTimeStampedBuffer& operator=(const char* psz);
	inline CHXTimeStampedBuffer& operator=(const unsigned char* psz);
	inline CHXTimeStampedBuffer& operator=(const CHXString &str);
	
	/*
	 *	IHXBuffer methods
	 */
    STDMETHOD(Get)				(THIS_
								REF(UCHAR*)		pData, 
								REF(ULONG32)	ulLength);

    STDMETHOD(Set)				(THIS_
								const UCHAR*	pData, 
								ULONG32			ulLength);

    STDMETHOD(SetSize)			(THIS_
								ULONG32			ulLength);

    STDMETHOD_(ULONG32,GetSize)	(THIS);

    STDMETHOD_(UCHAR*,GetBuffer)
								(THIS);

   // serialization method
   static void	Pack	(IHXTimeStampedBuffer* pTimeStampedBuffer, char* pData,
                         UINT32 ulDataBufSize, UINT32& ulSize);
   static void	UnPack	(IHXTimeStampedBuffer*& pTimeStampedBuffer, char* pData, UINT32 ulSize);
};

CHXTimeStampedBuffer& CHXTimeStampedBuffer::operator=(const char* psz)
{
	Set((const unsigned char*)psz, strlen(psz));
	return(*this);
}

CHXTimeStampedBuffer& CHXTimeStampedBuffer::operator=(const unsigned char* psz)
{
	Set(psz, strlen((const char*)psz));
	return(*this);
}

CHXTimeStampedBuffer& CHXTimeStampedBuffer::operator=(const CHXString& str)
{
	Set((const unsigned char*)(const char *)str, str.GetLength());
	return(*this);
}

#endif // _TIMEBUFF_H_