91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
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/**********************************************************************
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Copyright (c) Microsoft Corporation 1996. All Rights Reserved
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Timecode header file
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Format: NTSC, PAL or Film
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Dropframe or not
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Rates: 29.97 -> NTSC (4 field drop), Brazilian M-PAL (8 field drop)
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30 -> NTSC, Brazilian PAL (non-dropframe)
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24 -> Film
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25 -> PAL
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Ken Greenebaum, November 1996
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**********************************************************************/
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#ifndef _H_TIMECODE
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#define _H_TIMECODE
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#include <wtypes.h>
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#define TIMECODE_STRING_LENGTH 12 // 00:00:00:00 (XXX this is temporary?)
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class TimeCode {
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public:
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TimeCode();
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TimeCode(int hours, int min, int sec, int frames,
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BOOL ntsc=TRUE, BOOL drop=FALSE);
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TimeCode(char *string, BOOL ntsc=TRUE, BOOL drop=FALSE);
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void operator--(); // prefix
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void operator--(int); // postfix
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void operator++(); // prefix
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void operator++(int); // postfix
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int operator==(TimeCode tc)
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{_GetFrame(); return(_frames.frames == tc.GetTime()); }
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int operator>(TimeCode tc)
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{_GetFrame(); return(_frames.frames > tc.GetTime()); }
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int operator<(TimeCode tc)
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{_GetFrame(); return(_frames.frames < tc.GetTime()); }
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int operator<=(TimeCode tc)
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{_GetFrame(); return(_frames.frames <= tc.GetTime()); }
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int operator>=(TimeCode tc)
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{_GetFrame(); return(_frames.frames >= tc.GetTime()); }
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void SetTime(int hours, int minutes, int seconds, int frames);
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void SetTime(char *string);
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void SetFormat(BOOL ntsc, BOOL dropframe);
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void GetTime(int *hours, int *minutes, int *seconds, int *frames);
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LONGLONG GetTime();
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void GetString(char *string);
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private:
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struct {
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int hours;
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int minutes;
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int seconds;
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int frames;
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BOOL dirty;
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} _hmsf;
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struct {
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LONGLONG frames;
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BOOL dirty;
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} _frames;
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void _HMSFfromFrames();
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void _FramesFromHMSF();
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inline void _GetFrame() { if(_frames.dirty) _FramesFromHMSF(); }
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static const char NTSC_MODE;
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static const char PAL_MODE;
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static const char FORMAT_MASK;
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static const char DROPFRAME_MODE;
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static const char NO_DROPFRAME_MODE;
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static const char DROPFRAME_MASK;
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static const char NTSC_NODROP;
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static const char NTSC_DROP;
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static const char PAL_NODROP;
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static const char PAL_DROP;
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unsigned char _timeCodeFormat; // describe format based on the above consts
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};
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#endif /* _H_TIMECODE */
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