wcorecom.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 __WCORECOM_H
#define __WCORECOM_H


// --------------------------------------------------------------------------
//  WinCoreComm
//
//  Windows specific class for communicating with other audio sessions.
// --------------------------------------------------------------------------


class WinCoreComm : public HXCoreComm
{
friend class HXCoreComm;

public:

    STDMETHOD(StopAllOtherAudioPlayers)	    (THIS_);
    STDMETHOD(AskAllOtherPlayersToUnload)   (THIS_);
    STDMETHOD(AskAllOtherPlayersToReload)   (THIS_);

protected:
    WinCoreComm(HXClientEngine* pEngine);
    ~WinCoreComm();

    BOOL    Init();
    BOOL    Shutdown();

    BOOL    ProcessWindow(HWND hWnd, UINT32 uAction);
    void    StopAudioWindow(HWND hWnd);
    void    UnloadWindowPlugins(HWND hWnd);
    void    ReloadWindowPlugins(HWND hWnd);

    HWND    m_hWnd;
    BOOL    m_bReady;

#ifdef _WIN32
    ULONG32 m_ulOriginalThreadId;
#endif

    static LRESULT CALLBACK CoreCommWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
    static BOOL CALLBACK    CoreCommEnumProc(HWND hWnd, LPARAM lParam);
    static UINT32	    m_uStopAudioMsg;
    static UINT32	    m_uUnloadPluginsMsg;
    static UINT32	    m_uReloadPluginsMsg;
};



//      PWMs (private window messages)
//  These were taken from the 4.0 player
enum
{
        PWM_POSTED_IDLE = WM_USER + 0xCD,
        PWM_POSTED_ERROR,
        PWM_ASYNC_SELECT,
        PWM_RELEASE_AUDIO_DEVICE,
	PWM_UNLOAD_PLUGINS,
	PWM_RELOAD_PLUGINS
};



#define WCCACTION_STOPAUDIO	0   // tell the enum proc to send a stop message
#define WCCACTION_UNLOADPLUGINS 1   // tell the enum proc to stop and then unload all plugins
#define WCCACTION_RELOADPLUGINS 2   // tell the enum proc to reload all plugins

// state info for the EnumWindows proc
typedef struct
{
    WinCoreComm*    pComm;
    UINT32	    uAction;
} EnumAction;

#endif