hxdefpackethookhlp.cpp

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 
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 * 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, 
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 * 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 ***** */ 

/****************************************************************************
 *
 *
 *  Default IHXPacketHookHelper implementation:
 *  passing timestamp corrected packets to the
 *  response interface.
 *
 *
 */

#include "hxdefpackethookhlp.h"

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE
static const char HX_THIS_FILE[] = __FILE__;
#endif


// IUnknown interface listing
BEGIN_INTERFACE_LIST(CHXDefaultPacketHookHelper)
    INTERFACE_LIST_ENTRY_SIMPLE(IHXPacketHookHelper)
    INTERFACE_LIST_ENTRY_SIMPLE(IHXDefaultPacketHookHelper)
END_INTERFACE_LIST


CHXDefaultPacketHookHelper::CHXDefaultPacketHookHelper() :
    m_pCommonClassFactory(NULL),
    m_pPacketHookHelperResponse(NULL),
    m_pRecordTimeline(0),
    m_bStartPosSet(FALSE)
{
}

CHXDefaultPacketHookHelper::~CHXDefaultPacketHookHelper()
{
}

STDMETHODIMP
CHXDefaultPacketHookHelper::Initialize(IUnknown* pContext)
{
    HX_RESULT retVal = HXR_OK;

    if(pContext)
    {
	HX_RELEASE(m_pCommonClassFactory);
        retVal = pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pCommonClassFactory);
    }

    return HXR_OK;
}

STDMETHODIMP
CHXDefaultPacketHookHelper::Terminate()
{
    HX_RELEASE(m_pCommonClassFactory);
    HX_RELEASE(m_pPacketHookHelperResponse);
    HX_RELEASE(m_pRecordTimeline);

    return HXR_OK;
}


STDMETHODIMP
CHXDefaultPacketHookHelper::OnPacket(IHXPacket* pPacket)
{
    HX_RESULT nResult = HXR_OK;

    if(m_pPacketHookHelperResponse && pPacket)
    {
	if(!m_bStartPosSet && m_pRecordTimeline)
	{
	    m_bStartPosSet = TRUE;
	    m_pRecordTimeline->SetRecordStartPos(pPacket->GetTime());
	}

	IHXPacket*  pPacketRecorded = NULL;
	if(m_pCommonClassFactory)
	    m_pCommonClassFactory->CreateInstance(IID_IHXPacket, (void**)&pPacketRecorded);
	if(pPacketRecorded)
	{
	    IHXBuffer* pBuffer = pPacket->GetBuffer();

	    pPacketRecorded->Set(pBuffer,
			     m_pRecordTimeline ? m_pRecordTimeline->GetRecordPos(pPacket->GetTime()) : pPacket->GetTime(),
			     pPacket->GetStreamNumber(),
			     pPacket->GetASMFlags(),
			     pPacket->GetASMRuleNumber());

	    nResult = m_pPacketHookHelperResponse->OnPacket(pPacketRecorded);

	    HX_RELEASE(pBuffer); 
	}

	HX_RELEASE(pPacketRecorded);
    }

    return nResult;
}

STDMETHODIMP
CHXDefaultPacketHookHelper::OnEndOfPackets()
{
    HX_RESULT nResult = HXR_FAILED;

    if(m_pPacketHookHelperResponse)
	nResult = m_pPacketHookHelperResponse->OnEndOfPackets();

    return nResult;
}

STDMETHODIMP
CHXDefaultPacketHookHelper::StartHook(ULONG32 ulStreamNumber, ULONG32 ulTimeOffset,
				     IHXPacketHookHelperResponse* pPacketHookHelperResponse)
{
    m_pPacketHookHelperResponse = pPacketHookHelperResponse;
    if(m_pPacketHookHelperResponse)
    {
	m_pPacketHookHelperResponse->AddRef();
	m_pPacketHookHelperResponse->QueryInterface(IID_IHXRecordTimeline, (void**)&m_pRecordTimeline);
    }

    return HXR_OK;
}

STDMETHODIMP
CHXDefaultPacketHookHelper::StopHook()
{
    HX_RELEASE(m_pPacketHookHelperResponse);
    HX_RELEASE(m_pRecordTimeline);
    m_bStartPosSet = FALSE;

    return HXR_OK;
}