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/* ------------------------------------------------------------------
libofa -- the Open Fingerprint Architecture library
Copyright (C) 2006 MusicIP Corporation
All rights reserved.
-------------------------------------------------------------------*/
// FILE: "trackdata_op.cpp"
// MODULE: Implementation for class TrackData
// AUTHOR: Stephen Pope
// DATE CREATED: 01/12/06
#include "trackdata_op.h"
#define max(a,b) (((a) > (b)) ? (a) : (b))
#define min(a,b) (((a) < (b)) ? (a) : (b))
// Constructor
TrackData_op::TrackData_op() { /* empty */ }
TrackData_op::TrackData_op(float aTime, float frequency, float amplitude, float frDur)
{
StartTime = aTime;
EndTime = 0.0f;
Pitch = AvgPitch = EndPitch = frequency;
Amplitude = AvgAmplitude = amplitude;
FrameDur = frDur;
previous = 0;
next = 0;
higher = 0;
InTrack = false;
}
TrackData_op::~TrackData_op()
{
previous = next = higher = 0;
}
float
TrackData_op::getDuration()
{
if (isOrphan())
return FrameDur;
if ( ! (isHead()))
return (StartTime);
if (EndTime == 0.0f) {
TrackData_op* trk = getTail();
EndTime = trk->getTime() + FrameDur;
}
return (EndTime - StartTime);
}
// Extend the receiver by the argument
void
TrackData_op::linkTo(TrackData_op* tp)
{
tp->linkPrevious(this);
linkNext(tp);
InTrack = true;
tp->SetInTrack(true);
}
// Walk the links back to the head of this track
TrackData_op*
TrackData_op::getHead()
{
TrackData_op* trk;
trk = this;
while (trk->getPrev() != 0)
trk = trk->getPrev();
return trk;
}
// Walk the links forward to the tail of this track
TrackData_op*
TrackData_op::getTail()
{
TrackData_op* trk;
trk = this;
while (trk->getNext() != 0)
trk = trk->getNext();
return trk;
}
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