rlstate.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: rlstate.h,v 1.1.1.1.50.3 2004/07/09 01:48:00 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 ***** */

#ifndef __RLSTATA_H__
#define __RLSTATE_H__

class CASMRuleState
{
private:
    UINT16  m_nNumRules;
    BOOL*   m_bNeedSwitchOff;
    BOOL*   m_bSubscribePending;
    BOOL*   m_bSubscribed;
    BOOL*   m_bUnsubscribePending;
    UINT8*  m_lastASMFlagsForThisRule;
    UINT16** m_OffDepends;
    UINT16** m_OnDepends;

    void ParseRuleBookForDirectives(UINT16 num_rules,
				    char* pRuleBook,
				    UINT16 usBookSize,
				    BOOL* pNeedSwitchOff,
				    UINT16** pOffDepends,
				    UINT16** pOnDepends);

    char* ParseDependsList(char* pDependsText, UINT16* pDependsList);

public:
    CASMRuleState(UINT16 nNumRules, char* pRuleBook, UINT16 usBookSize);
    ~CASMRuleState();

    void StartSubscribePending(UINT16 usRuleNum);
    BOOL CanSubscribeNow(UINT16 usRuleNum);
    void CompleteSubscribe(UINT16 usRuleNum);

    void StartUnsubscribePending(UINT16 usRuleNum);
    BOOL CanUnsubscribeNow(UINT16 usRuleNum);
    void CompleteUnsubscribe(UINT16 usRuleNum);

    BOOL CanSwitchStreamsNow();
    void CompleteStreamSwitch();
    void CancelStreamSwitch();
    void CompleteAllUnsubscribes();

    BOOL AnyPendingUnsubscribes();
    UINT16 GetNextPendingUnsubscribe();

    BOOL IsRuleSubscribed(UINT16 usRuleNum) 
	{return m_bSubscribed[usRuleNum];}
    BOOL IsUnsubscribePending(UINT16 usRuleNum)
	{return m_bUnsubscribePending[usRuleNum];}
    BOOL IsSubscribePending(UINT16 usRuleNum)
	{return m_bSubscribePending[usRuleNum];}
    void SetASMFlags(UINT16 usRuleNum, UINT8 asmFlags)
	{m_lastASMFlagsForThisRule[usRuleNum] = asmFlags;}
    UINT8 GetASMFlags(UINT16 usRuleNum)
	{return m_lastASMFlagsForThisRule[usRuleNum];}
    BOOL WaitForSwitchOff(UINT16 usRuleNum)
	{return m_bNeedSwitchOff[usRuleNum];}
};
#endif /* __RLSTATE_H__ */