viewsrc.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 
 * 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 ***** */ 

#include "hxcom.h"
#include "hxtypes.h"
#include "hxresult.h"
#include "hxslist.h"
#include "chxpckts.h"
#include "hxstrutl.h"

#include "hxvsrc.h"
#include "viewsrc.h"

HXViewSource::HXViewSource(IUnknown* pContext)
	: m_lRefCount(0)
	, m_pViewSourceHdlr(NULL)
	, m_pViewRightsHdlr(NULL)
	, m_pContext(NULL)
{    
    if (pContext)
    {
	m_pContext = pContext;
	m_pContext->AddRef();
    }
}

HXViewSource::~HXViewSource()
{
    HX_RELEASE(m_pContext);
    HX_RELEASE(m_pViewSourceHdlr);
    HX_RELEASE(m_pViewRightsHdlr);
}

STDMETHODIMP
HXViewSource::QueryInterface(REFIID riid, void**ppvObj)
{
    QInterfaceList qiList[] =
        {
            { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXClientViewSource*)this },
            { GET_IIDHANDLE(IID_IHXClientViewSource), (IHXClientViewSource*)this },
            { GET_IIDHANDLE(IID_IHXClientViewRights), (IHXClientViewRights*)this },
            { GET_IIDHANDLE(IID_IHXClientViewSourceSink), (IHXClientViewSourceSink*)this },
        };
    
    return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
}

/////////////////////////////////////////////////////////////////////////
//  Method:
//	IUnknown::AddRef
//  Purpose:
//	Everyone usually implements this the same... feel free to use
//	this implementation.
//
STDMETHODIMP_(ULONG32) 
HXViewSource::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

/////////////////////////////////////////////////////////////////////////
//  Method:
//	IUnknown::Release
//  Purpose:
//	Everyone usually implements this the same... feel free to use
//	this implementation.
//
STDMETHODIMP_(ULONG32) 
HXViewSource::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
        return m_lRefCount;
    }

    delete this;
    return 0;
}

/************************************************************************
 *  IHXClientViewSource
 */
STDMETHODIMP
HXViewSource::DoViewSource (
	IUnknown*		      /*IN*/ pPlayerContext,
	IHXStreamSource*	      /*IN*/ pSource)
{
    if ( m_pViewSourceHdlr == NULL )
    {
	return HXR_NOT_INITIALIZED;
    }
    return m_pViewSourceHdlr->DoViewSource(pPlayerContext, pSource);
}

STDMETHODIMP_(BOOL)
HXViewSource::CanViewSource(
	IHXStreamSource*	    /*IN*/  pSource)
{
    if ( m_pViewSourceHdlr == NULL )
    {
	return FALSE;
    }
    return m_pViewSourceHdlr->CanViewSource(pSource);
}

STDMETHODIMP
HXViewSource::GetViewSourceURL(IUnknown*			pPlayerContext,
				IHXStreamSource*		pSource,
				IHXViewSourceURLResponse*	pResp)
{
    if ( m_pViewSourceHdlr == NULL )
    {
	return HXR_NOT_INITIALIZED;
    }
    return m_pViewSourceHdlr->GetViewSourceURL(pPlayerContext, pSource, pResp);
}

/************************************************************************
 *  IHXClientViewRights
 */
STDMETHODIMP
HXViewSource::ViewRights(IUnknown* pContext)
{
    if (m_pViewRightsHdlr == NULL)
    {
	return HXR_NOT_INITIALIZED;
    }
    return m_pViewRightsHdlr->ViewRights(pContext);
}

STDMETHODIMP_(BOOL)
HXViewSource::CanViewRights()
{
    if (m_pViewRightsHdlr == NULL)
    {
	return FALSE;
    }
    return m_pViewRightsHdlr->CanViewRights();
}
/************************************************************************
 *  IHXClientViewSourceSink
 */
STDMETHODIMP
HXViewSource::RegisterViewSourceHdlr(IHXClientViewSource* pViewSourceHdlr)
{
    HX_ASSERT(pViewSourceHdlr);
    if ( pViewSourceHdlr )
    {
	HX_RELEASE(m_pViewSourceHdlr);
	m_pViewSourceHdlr = pViewSourceHdlr;
	m_pViewSourceHdlr->AddRef();

	pViewSourceHdlr->QueryInterface(IID_IHXClientViewRights, 
	    (void**)&m_pViewRightsHdlr);
    }
    return HXR_OK;
}