nxtgrmgr.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 _NEXTGROUPMANAGER_
#define _NEXTGROUPMANAGER_

class	HXPlayer;
class	CHXSimpleList;
class   CHXString;
class 	SourceInfo;
struct	IHXGroup;
struct  IHXInterruptState;

class NextGroupManager
{
public:
    NextGroupManager(HXPlayer* pPlayer);
    ~NextGroupManager();

	void		Init();
    HX_RESULT	SetCurrentGroup(UINT16 uGroupNumber, IHXGroup* pGroup);
    HX_RESULT	GetCurrentGroup(UINT16& uCurrentGroup, IHXGroup*& pGroup);

    HX_RESULT	AddSource(SourceInfo* pSourceInfo);
    UINT16	GetNumSources(void);
    HX_RESULT	GetSource(UINT16 uIndex, SourceInfo*& pSourceInfo);
    HX_RESULT	RemoveSource(UINT16 uIndex, SourceInfo*& pSourceInfo);
    HX_RESULT	RemoveSource(SourceInfo* pSourceInfo);
    void	RemoveAllSources(void);
    BOOL	Lookup(HXSource* pSource, SourceInfo*& pSourceInfo);
    HX_RESULT	CanBeStarted(HXSource* pSource, SourceInfo* pThisSourceInfo);
    
    HX_RESULT	ProcessIdle(void);
    
    void	SetLastError(HX_RESULT theErr, HXSource* pSource = NULL, 
			     char* pUserString = NULL);

    HX_RESULT	GetLastError(HXSource*& pSource, const char*& pUserString)	
		{pSource = m_pErrorSource; pUserString = m_UserString; return m_LastError;};

    BOOL	ReportError (HXSource* pSource, 
			     HX_RESULT theErr, const char* pUserString = NULL);
    void	Cleanup(void);
    void	StopPreFetch(void);
    void	ContinuePreFetch(void);

    HX_RESULT	AddRepeatTrack(UINT16 uTrackIndex, IHXValues* pTrack);

protected:
    HXPlayer*		m_pPlayer;
    IHXInterruptState* m_pInterruptState;
    CHXSimpleList*	m_pSourceList;
    HX_RESULT		m_LastError;
    CHXString		m_UserString;
    UINT16		m_uGroupNumber : 16;    
    HX_BITFIELD		m_bStopPrefetch : 1;
    IHXGroup*		m_pGroup;
    HXSource*		m_pErrorSource;

    HX_RESULT	GetSourceInfo(UINT16 uTrackIndex, SourceInfo*& pSourceInfo);
};
#endif /*_NEXTGROUPMANAGER_*/