plugin_w_eventsink.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
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxcom.h"
#include "hxplugn.h"
#include "baseobj.h"
#include "ihxpckts.h"
#include "hxrendr.h"
#include "rarender.h"
#include "null_event_rend.h"
#include "plugin_w_eventsink.h"

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


HX_RESULT (STDAPICALLTYPE* const CRealAudioPluginFactory::m_fpRMACreateInstanceArray[])(IUnknown**) =
{
    CRealAudioRenderer::HXCreateInstance,
    CNullEventRenderer::HXCreateInstance,
    NULL
};

STDAPI ENTRYPOINT(HXCREATEINSTANCE)(IUnknown** ppIUnknown)
{
    HX_RESULT retVal = HXR_FAIL;

    if (ppIUnknown)
    {
        CRealAudioPluginFactory* pFactory = new CRealAudioPluginFactory();
        if (pFactory)
        {
            retVal = pFactory->QueryInterface(IID_IUnknown, (void**) ppIUnknown);
        }
        if (FAILED(retVal))
        {
            HX_DELETE(pFactory);
        }
    }

    return retVal;
}

STDAPI ENTRYPOINT(CanUnload2)(void)
{
    return (CHXBaseCountingObject::ObjectsActive() > 0 ? HXR_FAIL : HXR_OK);
}

STDAPI ENTRYPOINT(CanUnload)(void)
{
    return ENTRYPOINT(CanUnload2)();
}

CRealAudioPluginFactory::CRealAudioPluginFactory()
{
    m_lRefCount = 0;
    for(m_usNumPlugins = 0; m_fpRMACreateInstanceArray[m_usNumPlugins]; m_usNumPlugins++);
}

CRealAudioPluginFactory::~CRealAudioPluginFactory()
{
}

STDMETHODIMP CRealAudioPluginFactory::QueryInterface(REFIID riid, void** ppvObj)
{
    HX_RESULT retVal = HXR_OK;

    if (ppvObj)
    {
        // Set default
        *ppvObj = NULL;
        // Check for IID type
        if (IsEqualIID(riid, IID_IUnknown))
        {
            AddRef();
            *ppvObj = (IUnknown*) (IHXPluginFactory*) this;
        }
        else if (IsEqualIID(riid, IID_IHXPluginFactory))
        {
            AddRef();
            *ppvObj = (IHXPluginFactory*) this;
        }
        else
        {
            retVal = HXR_NOINTERFACE;
        }
    }
    else
    {
        retVal = HXR_FAIL;
    }

    return retVal;
}

STDMETHODIMP_(UINT32) CRealAudioPluginFactory::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}


STDMETHODIMP_(UINT32) CRealAudioPluginFactory::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
        return m_lRefCount;
    }

    delete this;

    return 0;
}

STDMETHODIMP_(UINT16) CRealAudioPluginFactory::GetNumPlugins()
{
    return m_usNumPlugins;
}

STDMETHODIMP CRealAudioPluginFactory::GetPlugin(UINT16 usIndex, IUnknown** ppPlugin)
{
    HX_RESULT retVal = HXR_INVALID_PARAMETER;

    if (usIndex < m_usNumPlugins && ppPlugin)
    {
        retVal = m_fpRMACreateInstanceArray[usIndex](ppPlugin);
    }

    return retVal;
}