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37 lines
793 B
C
37 lines
793 B
C
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/*
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* time.c -- time functions
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*
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* Copyright (C) 2004, 2005, 2006, 2007 Svend Sorensen
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* For license terms, see the file COPYING in this distribution.
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*/
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#include "time.h"
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#include <stdio.h>
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#include <stdlib.h>
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long time_msf_to_frame(int m, int s, int f)
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{
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return (m * 60 + s) * 75 + f;
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}
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void time_frame_to_msf(long frame, int *m, int *s, int *f)
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{
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*f = frame % 75; /* 0 <= frames <= 74 */
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frame /= 75;
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*s = frame % 60; /* 0 <= seconds <= 59 */
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frame /= 60;
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*m = frame; /* 0 <= minutes */
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}
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/* print frame in mm:ss:ff format */
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char *time_frame_to_mmssff(long f)
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{
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static char msf[9];
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int minutes, seconds, frames;
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time_frame_to_msf(f, &minutes, &seconds, &frames);
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sprintf(msf, "%02d:%02d:%02d", minutes, seconds, frames);
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return msf;
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}
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