smpte.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, 
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 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
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 * Contributor(s): 
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 * ***** END LICENSE BLOCK ***** */ 

#ifndef _SMPTE_H_
#define _SMPTE_H_

class SMPTETimeCode
{
public:

    // constructors
    SMPTETimeCode();
    SMPTETimeCode(UINT32 mSec);
    SMPTETimeCode(int hour, int min, int sec, int frame=0);
    SMPTETimeCode(const char* pTimeCodeString /* format HH:MM:SS.FF */);
    SMPTETimeCode(const SMPTETimeCode& lhs);

    // assignment
    SMPTETimeCode& operator=(const SMPTETimeCode& lhs);

    enum DropFrame    { DROP_FRAME, NON_DROP_FRAME }; 	// default DROP_FRAME
    enum FramesPerSec { FPS_25, FPS_30 };		// default FPS_30

    // conversion
    operator const char*();
    operator UINT32();
    void fromString(const char* pTimeCodeString);

    // arithmetic
    SMPTETimeCode operator+(const SMPTETimeCode& lhs);
    SMPTETimeCode operator-(const SMPTETimeCode& lhs);
    SMPTETimeCode& operator+=(const SMPTETimeCode& lhs);
    SMPTETimeCode& operator-=(const SMPTETimeCode& lhs);

    // comparison
    int compare(const SMPTETimeCode& lhs) const;

    int m_hour;
    int m_minute;
    int m_second;
    int m_frame;

    DropFrame m_dropFrame;
    FramesPerSec m_framesPerSec;
private:
    void toMSec();
    void fromMSec();
    const char* toString();

    CHXString m_asString;
    UINT32 m_mSecs;
};

inline BOOL operator==(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) == 0;
}

inline BOOL operator!=(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) != 0;
}

inline BOOL operator<(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) < 0;
}

inline BOOL operator>(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) > 0;
}

inline BOOL operator<=(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) <= 0;
}

inline BOOL operator>=(const SMPTETimeCode& t1, const SMPTETimeCode& t2)
{
    return t1.compare(t2) >= 0;
}

#endif /* _SMPTE_H_ */