viewport.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: viewport.cpp,v 1.3.20.1 2004/07/09 02:05:58 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * 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 "hxtypes.h"
#include "hxcom.h"
#include "hxresult.h"

#include "hxengin.h"
#include "hxcore.h"
#include "hxslist.h"
#include "hxmap.h"

#include "hxgroup.h"
#include "hxplay.h"
#include "hxcleng.h"
#include "viewport.h"

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

#ifndef _UNIX /* probably a chinstrap tlc :) */
#define XXXMEH_VIEWPORT_HACK 1
#endif

HXViewPort::HXViewPort(HXViewPortManager*	pViewPortManager,
			 IHXValues*		pValues,
			 const char*		pszName)
			 : m_lRefCount(0)
			 , m_pszName(pszName)
			 , m_pParent(pViewPortManager)
			 , m_pValues(pValues)
{   
    if (m_pValues)
    {
	m_pValues->AddRef();
    }
}

HXViewPort::~HXViewPort()
{
    HX_RELEASE(m_pValues);
}

STDMETHODIMP
HXViewPort::QueryInterface(REFIID riid, void**ppvObj)
{
    QInterfaceList qiList[] =
        {
            { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)this },
            { GET_IIDHANDLE(IID_IHXViewPort), (IHXViewPort*)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) 
HXViewPort::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

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

    delete this;
    return 0;
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::GetName
 *	Purpose:
 *	    get name of the viewport
 */
STDMETHODIMP_(const char*)
HXViewPort::GetName()
{
    return m_pszName;
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::GetProperties
 *	Purpose:
 *	    get properties of the viewport
 */
STDMETHODIMP
HXViewPort::GetProperties(REF(IHXValues*)   pValues)
{
    pValues = m_pValues;
    if (pValues)
    {
	pValues->AddRef();
    }

    return HXR_OK;
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::Show
 *	Purpose:
 *	    show viewport
 */
STDMETHODIMP
HXViewPort::Show()
{
    return m_pParent->OnViewPortShow(m_pszName);
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::Hide
 *	Purpose:
 *	    hide viewport
 */
STDMETHODIMP
HXViewPort::Hide()
{
    return m_pParent->OnViewPortHide(m_pszName);
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::SetFocus
 *	Purpose:
 *	    set focus on viewport
 */
STDMETHODIMP
HXViewPort::SetFocus()
{
    return m_pParent->OnViewPortFocus(m_pszName);
}

/************************************************************************
 *	Method:
 *	    IHXViewPort::SetZOrder
 *	Purpose:
 *	    set Z order on viewport
 */
STDMETHODIMP
HXViewPort::SetZOrder(UINT32	ulZOrder)
{
    return m_pParent->OnViewPortZOrder(m_pszName, ulZOrder);
}

HXViewPortManager::HXViewPortManager(HXPlayer* pPlayer)
			:   m_lRefCount(0)
			,   m_pPlayer(pPlayer)
			,   m_pViewPortMap(NULL)
			,   m_pViewPortSinkList(NULL)
			,   m_pViewPortSupplier(NULL)
{
    if (m_pPlayer)
        m_pPlayer->AddRef();
}

HXViewPortManager::~HXViewPortManager()
{
    Close();
}

STDMETHODIMP
HXViewPortManager::QueryInterface(REFIID riid, void**ppvObj)
{
    QInterfaceList qiList[] =
        {
            { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)this },
            { GET_IIDHANDLE(IID_IHXViewPortManager), (IHXViewPortManager*)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) 
HXViewPortManager::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

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

    delete this;
    return 0;
}

/************************************************************************
 *	Method:
 *	    IHXViewPortManager::OpenViewPort
 *	Purpose:
 *	    create viewport
 */
STDMETHODIMP
HXViewPortManager::OpenViewPort(IHXValues* pValues, IHXSiteUser* pSiteUser)
{
    HX_RESULT		rc = HXR_OK;
    const char*		pszViewPort = NULL;
    IHXBuffer*		pBuffer = NULL;
    HXViewPort*	pViewPort = NULL;
    IHXViewPortSink*	pViewPortSink = NULL;
    CHXSimpleList::Iterator ndx;

    if (!pValues)
    {
	rc = HXR_FAILED;
	goto cleanup;
    }

    if (HXR_OK != pValues->GetPropertyCString("playto", pBuffer))
    {
	rc = HXR_FAILED;
	goto cleanup;
    }

    pszViewPort = (const char*)pBuffer->GetBuffer();

    pViewPort = new HXViewPort(this, pValues, pszViewPort);
    pViewPort->AddRef();

    if (!m_pViewPortMap)  
    {
	m_pViewPortMap = new CHXMapStringToOb();
    }

    m_pViewPortMap->SetAt(pszViewPort, (void*)pViewPort);

#ifdef XXXMEH_VIEWPORT_HACK
    // XXXMEH - hack for now until we get TLC support for
    // IHXViewPortSupplier. If we don't get support from
    // the TLC for IHXViewPortSupplier, then QI the SMIL
    // renderer for it. We also have to check it every time
    // to see if it has changed. This is because the core
    // may change the persistent component and not let us
    // know about it.
    {
        if (m_pViewPortSinkList)
        {
            LISTPOSITION pos = m_pViewPortSinkList->GetHeadPosition();