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plsnkctl.cpp：源码内容
							/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: plsnkctl.cpp,v 1.3.20.1 2004/07/09 02:05:58 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
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 * the file under the current version of the RealNetworks Community
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 * contents of the file.
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 * This file is part of the Helix DNA Technology. RealNetworks is the
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 * portions it created.
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 * This file, and the files included with this file, is distributed
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 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
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 * ***** END LICENSE BLOCK ***** */
#include "hxcom.h"
#include "hxtypes.h"
#include "hxpsink.h"
#include "hxslist.h"
#include "plsnkctl.h"
#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE
static const char HX_THIS_FILE[] = __FILE__;
#endif
/************************************************************************
 *
 * CHXPlayerSinkControl 
 *
 */
CHXPlayerSinkControl::CHXPlayerSinkControl()
    : m_lRefCount(0)
    , m_pSinkList(NULL)
    , m_pSinksToBeRemoved(NULL)
    , m_bInPlayerClosed(FALSE)
{
}
CHXPlayerSinkControl::~CHXPlayerSinkControl()
{
    Terminate();
}
void CHXPlayerSinkControl::Terminate()
{
    m_bInPlayerClosed = TRUE;
    if (m_pSinkList)
    {
	CHXSimpleList::Iterator lIterator	= m_pSinkList->Begin();
    
	for (; lIterator != m_pSinkList->End(); ++lIterator)
	{
	    IHXPlayerCreationSink* pPlayerSink = (IHXPlayerCreationSink*) (*lIterator);
	    pPlayerSink->Release();
	}
	m_pSinkList->RemoveAll();
	HX_DELETE(m_pSinkList);
    }
 
    if (m_pSinksToBeRemoved)
    {
        m_pSinksToBeRemoved->RemoveAll();
    }
    HX_DELETE(m_pSinksToBeRemoved);
    m_bInPlayerClosed = FALSE;
}
STDMETHODIMP
CHXPlayerSinkControl::AddSink(IHXPlayerCreationSink* pPlayerSink)
{
    if (pPlayerSink)
    {
	if (!m_pSinkList)
	{
	    m_pSinkList = new CHXSimpleList;
	    if (!m_pSinkList)
	    {
		return HXR_OUTOFMEMORY;
	    }
	}
    	m_pSinkList->AddTail(pPlayerSink);
    	pPlayerSink->AddRef();
    	
    }
    return HXR_OK;
}
STDMETHODIMP
CHXPlayerSinkControl::RemoveSink(IHXPlayerCreationSink* pPlayerSink)
{
    if (m_pSinkList)
    {
	LISTPOSITION pos = m_pSinkList->Find(pPlayerSink);
	if (pos)
	{
	    if (!m_bInPlayerClosed)
	    {
		m_pSinkList->RemoveAt(pos);	    
		pPlayerSink->Release();
	    }
	    else
	    {
		if (!m_pSinksToBeRemoved)
		{
		    m_pSinksToBeRemoved = new CHXSimpleList;
		    if (!m_pSinksToBeRemoved)
		    {
			return HXR_OUTOFMEMORY;
		    }
		}
		/* Add to the list for later removal */
		m_pSinksToBeRemoved->AddTail(pPlayerSink);
	    }
	    return HXR_OK;
	}
    }
    return HXR_FAIL;
}
STDMETHODIMP 
CHXPlayerSinkControl::QueryInterface(REFIID riid, void** ppvObj)
{
    QInterfaceList qiList[] =
        {
            { GET_IIDHANDLE(IID_IHXPlayerSinkControl), (IHXPlayerSinkControl*)this },
            { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXPlayerSinkControl*)this },
        };
    
    return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);        
}
STDMETHODIMP_ (ULONG32) 
CHXPlayerSinkControl::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}
STDMETHODIMP_ (ULONG32) 
CHXPlayerSinkControl::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
	return m_lRefCount;
    }
    delete this;
    return 0;
}
void	
CHXPlayerSinkControl::PlayerCreated	(IHXPlayer* pPlayer)
{
    if (m_pSinkList)
    {
	CHXSimpleList::Iterator lIterator	= m_pSinkList->Begin();
    
	for (; lIterator != m_pSinkList->End(); ++lIterator)
	{
	    IHXPlayerCreationSink* pPlayerSink = (IHXPlayerCreationSink*) (*lIterator);
	    pPlayerSink->PlayerCreated(pPlayer);
	}
    }
}
void	
CHXPlayerSinkControl::PlayerClosed	(IHXPlayer* pPlayer)
{
    if (m_pSinkList)
    {
	m_bInPlayerClosed = TRUE;
	CHXSimpleList::Iterator lIterator	= m_pSinkList->Begin();
    
	for (; lIterator != m_pSinkList->End(); ++lIterator)
	{
	    IHXPlayerCreationSink* pPlayerSink = (IHXPlayerCreationSink*) (*lIterator);
	    pPlayerSink->PlayerClosed(pPlayer);
	}
	m_bInPlayerClosed = FALSE;
	if (m_pSinksToBeRemoved && m_pSinksToBeRemoved->GetCount() > 0)
	{
	    lIterator	= m_pSinksToBeRemoved->Begin();
	    for (; lIterator != m_pSinksToBeRemoved->End(); ++lIterator)
	    {
		IHXPlayerCreationSink* pPlayerSink = 
		    (IHXPlayerCreationSink*) (*lIterator);
		RemoveSink(pPlayerSink);
	    }
	    m_pSinksToBeRemoved->RemoveAll();
	}
    }
}

						