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/* ------------------------------------------------------------------
libofa -- the Open Fingerprint Architecture library
Copyright (C) 2006 MusicIP Corporation
All rights reserved.
-------------------------------------------------------------------*/
// FILE: "trackframe_op.cpp"
// MODULE: Implementation for class TrackFrame_op
// AUTHOR: Stephen Pope
// DATE CREATED: 01/12/06
#include <math.h>
#include "trackdata_op.h"
#include "trackframe_op.h"
// Constructor
TrackFrame_op::TrackFrame_op(float aTime)
{
FrameTime = aTime;
NumTracks = 0;
BaseTr = 0;
NextFr = 0;
}
// Delete the list of peaks on delete
TrackFrame_op::~TrackFrame_op()
{
TrackData_op* trk = BaseTr;
while (trk != 0) {
TrackData_op* next = trk->getHigher();
delete trk;
trk = next;
}
}
// Element add/remove
void
TrackFrame_op::Add(TrackData_op* td)
{
if (NumTracks == 0)
BaseTr = td;
NumTracks++;
}
// Answer the best-match (in frequency) track to the given value
TrackData_op*
TrackFrame_op::getTrackNearestFreq(float freq)
{
double diff;
double minDiff = 10000;
TrackData_op* answer;
answer = 0;
TrackData_op* ptr = BaseTr;
// Iterate over the receiver's peaks
while (ptr != 0) {
if (!ptr->IsInTrack())
{
// Find minimum frequency difference
diff = fabs (ptr->getPitch() - freq);
if (diff < minDiff) {
minDiff = diff;
answer = ptr;
}
}
ptr = ptr->getHigher();
}
return answer;
}
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