DTtcvalid(3dm)							DTtcvalid(3dm)

NAME    [Toc]    [Back]

     DTtcvalid - check a dat timecode for validity

SYNOPSIS    [Toc]    [Back]

     #include <sys/types.h>
     #include <dmedia/dataudio.h>

     int DTtcvalid(struct dttimecode* tc)

PARAMETERS    [Toc]    [Back]

     tc	  A pointer to the struct dttimecode to	be checked.

RETURNED VALUE    [Toc]    [Back]

     DTtcvalid returns non-zero	if the timecode	structure represents a valid
     timecode otherwise	it returns zero.

DESCRIPTION    [Toc]    [Back]

     DTtctotime	checks a struct	dttimecode to see if it	contains a valid
     timecode.	A struct dttimecode is defined as follows in dataudio.h	:

	      struct dttimecode	{
		  unchar hhi:4,	hlo:4;
		  unchar mhi:4,	mlo:4;
		  unchar shi:4,	slo:4;
		  unchar fhi:4,	flo:4;
	      };


     Hours, minutes, seconds and frame number are each represented by 2	BCD
     digits.  A	timecode is considered valid if	all digits have	values between
     0 and 9.

SEE ALSO    [Toc]    [Back]

     DTintro(3dm), DTaddcallback(3dm), DTatotime(3dm), DTatohmsf(3dm),
     DTframetotc(3dm), DTframetohmsf(3dm), DThmsftoframe(3dm),
     DTparseframe(3dm),	DTremovecallback(3dm) DTtctoframe(3dm),
     DTtimetoa(3dm), datframe(4)

AUTHOR    [Toc]    [Back]

     Mark Callow


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