smpte.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: smpte.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.
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 * 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
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 * This file is part of the Helix DNA Technology. RealNetworks is the
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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_ */