hxsbuffer.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 _HXSBUFFER_H_
#define _HXSBUFFER_H_

#include "ihxpckts.h"
#include "hxvalue.h"
//#include "hxheap.h"
#include "hxstring.h"
#include "hxcomm.h"    // IHXFastAlloc

/****************************************************************************
 * 
 *        Class:
 *
 *                CHXStaticBuffer
 *
 *        Purpose:
 *
 *                PN implementation of a static buffer.
 *
 */
class CHXStaticBuffer : public IHXBuffer
{
public:
    CHXStaticBuffer(void);
    CHXStaticBuffer(UCHAR* pData, UINT32 ulLength);
    CHXStaticBuffer(IHXBuffer* pbuf, UINT32 pos, UINT32 len);

    inline CHXStaticBuffer& operator=(const char* psz);
    inline CHXStaticBuffer& operator=(const unsigned char* psz);

    // IUnknown
    STDMETHOD(QueryInterface)   (THIS_ REFIID riid, void** ppvObj);
    STDMETHOD_(ULONG32,AddRef)  (THIS);
    STDMETHOD_(ULONG32,Release) (THIS);

    // IHXBuffer
    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);

#ifdef HELIX_FEATURE_SERVER
    FAST_CACHE_MEM
#endif

protected:
    ULONG32         m_ulRefCount;
    IHXBuffer*     m_pbufRef;
    const UCHAR*    m_pData;
    ULONG32         m_ulLength;

private:
    virtual ~CHXStaticBuffer(void);
    PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME
};

CHXStaticBuffer& CHXStaticBuffer::operator=(const char* psz)
{
    Set((const UCHAR*)psz, strlen(psz)+1);
    return *this;
}

CHXStaticBuffer& CHXStaticBuffer::operator=(const unsigned char* psz)
{
    Set(psz, strlen((const char*)psz) + 1);
    return *this;
}

#endif