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//=========================================================
// MusE
// Linux Music Editor
// $Id: mtc.cpp,v 1.1.1.1 2003/10/29 10:05:10 wschweer Exp $
//
// (C) Copyright 2001 Werner Schweer (ws@seh.de)
//=========================================================
#include "mtc.h"
#include <stdio.h>
extern int mtcType;
//---------------------------------------------------------
// MTC::time
// converts MTC Time to seconds according to
// global mtcType
//---------------------------------------------------------
double MTC::time() const
{
double time = _h * 3600 + _m * 60 + _s;
double ft = 0.0;
switch (mtcType) {
case 0: // 24 frames sec
ft = 1.0/24.0;
break;
case 1: // 25
ft = 0.04;
break;
case 2: // 30 drop frame TODO
case 3: // 30 non drop frame
ft = 1.0/30.0;
break;
}
return time + ft *_f + 0.01 * ft * _sf;
}
//---------------------------------------------------------
// MTC
//---------------------------------------------------------
MTC::MTC(double t)
{
_h = int(t/3600);
t -= _h * 3600;
_m = int(t/60);
t -= _m * 60;
_s = int(t);
t -= _s;
double ft = 1.0/24.0;
switch (mtcType) {
case 0: // 24 frames sec
ft = 1.0/24.0;
break;
case 1: // 25
ft = 0.04;
break;
case 2: // 30 drop frame
case 3: // 30 non drop frame
ft = 1.0/30.0;
break;
}
double frames = t / ft;
_f = int(frames);
frames -= _f;
_sf = int(frames * 100);
}
//---------------------------------------------------------
// incQuarter
// increment MTC time one quarter frame time
//---------------------------------------------------------
void MTC::incQuarter()
{
int frames = 24;
switch (mtcType) {
case 0:
frames = 24;
break;
case 1:
frames = 25;
break;
case 2:
case 3:
frames = 30;
break;
}
_sf += 25;
if (_sf >= 100) {
++_f;
_sf -= 100;
}
if (_f == frames) {
++_s;
_f = 0;
}
if (_s == 60) {
++_m;
_s = 0;
}
if (_m == 60) {
++_h;
_m = 0;
}
if (_h == 24) {
_h = 0;
}
}
//---------------------------------------------------------
// print
//---------------------------------------------------------
void MTC::print() const
{
printf("%02d:%02d:%02d:%02d:%02d", _h, _m, _s, _f, _sf);
}
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