null_event_rend.h

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 ***** */

#ifndef NULLEVENT_H
#define NULLEVENT_H

// Forward declarations
typedef _INTERFACE IHXStream IHXStream;
typedef _INTERFACE IHXPlayer IHXPlayer;
typedef _INTERFACE IHXValues IHXValues;
typedef _INTERFACE IHXPacket IHXPacket;
typedef _INTERFACE IHXBuffer IHXBuffer;


class CNullEventRenderer : public IHXPlugin,
                           public IHXRenderer,
                           public CHXBaseCountingObject
{
public:
    CNullEventRenderer();
    virtual ~CNullEventRenderer();

    // IUnknown Methods
    STDMETHOD (QueryInterface)  (THIS_ REFIID ID, void** ppObj);
    STDMETHOD_(UINT32, AddRef)  (THIS);
    STDMETHOD_(UINT32, Release) (THIS);

    // IHXPlugin Methods
    STDMETHOD(GetPluginInfo) (THIS_ REF(BOOL)        rbLoadMultiple,
                                    REF(const char*) rpszDescription,
                                    REF(const char*) rpszCopyright,
                                    REF(const char*) rpszMoreInfoURL,
                                    REF(UINT32)      rulVersionNumber);
    STDMETHOD(InitPlugin)    (THIS_ IUnknown* pContext);

    // IHXRenderer Methods
    STDMETHOD(GetRendererInfo) (THIS_ REF(const char**) rppszStreamMimeType,
                                      REF(UINT32)       rulInitialGranularity);
    STDMETHOD(StartStream)     (THIS_ IHXStream* pStream, IHXPlayer* pPlayer);
    STDMETHOD(EndStream)       (THIS);
    STDMETHOD(OnHeader)        (THIS_ IHXValues* pHeader);
    STDMETHOD(OnPacket)        (THIS_ IHXPacket* pPacket, INT32 lTimeOffset);
    STDMETHOD(OnTimeSync)      (THIS_ UINT32 ulTime);
    STDMETHOD(OnPreSeek)       (THIS_ UINT32 ulTimeBefore, UINT32 ulTimeAfter);
    STDMETHOD(OnPostSeek)      (THIS_ UINT32 ulTimeBefore, UINT32 ulTimeAfter);
    STDMETHOD(OnPause)         (THIS_ UINT32 ulTimeBeforePause);
    STDMETHOD(OnBegin)         (THIS_ UINT32 ulTimeAfterBegin);
    STDMETHOD(OnBuffering)     (THIS_ UINT32 ulReason, UINT16 usPercentComplete);
    STDMETHOD(GetDisplayType)  (THIS_ REF(HX_DISPLAY_TYPE) rDisplayType,
                                      REF(IHXBuffer*)     rpDisplayInfo);
    STDMETHOD(OnEndofPackets)  (THIS);

    // CNullEventRenderer methods
    static HX_RESULT STDAPICALLTYPE HXCreateInstance(IUnknown** ppUnk);
protected:
    INT32 m_lRefCount;

    static const char* const m_pszDescription;
    static const char* const m_pszCopyright;
    static const char* const m_pszMoreInfoURL;
    static const char* const m_ppszStreamMimeTypes[];
};


#endif /* #ifndef NULLEVENT_H */