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/* ------------------------------------------------------------------
libofa -- the Open Fingerprint Architecture library
Copyright (C) 2006 MusicIP Corporation
All rights reserved.
-------------------------------------------------------------------*/
// FILE: "frametracker_op.h"
// MODULE: Class header for FrameTracker_op
// AUTHOR: Stephen Pope, Frode Holm
// DATE CREATED: 01/12/06
#ifndef FRAME_TRACKER_OP_H
#define FRAME_TRACKER_OP_H 1
#include "fft_op.h"
#include "tracklist_op.h"
#include "trackdata_op.h"
class FrameTracker_op {
public:
// Constructor -- here are the defaults for the thresholds
FrameTracker_op(
float peakT = 0.001f, // min ampl for peak detection
float fThresh = 0.2, // max freq ratio for tracking between peaks
float lenT = 0.1f, // min length for track (in sec) (ignored in this version)
int maxTrax = 500); // max # of tracks at a time (ignored in this version)
~FrameTracker_op();
// Accessing
TrackList_op* getTracks() { return &Tracks; }
// The big do-it method -- run the peak-tracking
void Compute(FFT_op& spectra);
private:
TrackList_op Tracks; // list of tracked frames
float PeakThreshold; // min peak magnitude for detection
float FreqThreshold; // max step between peaks for tracking
float LengthThreshold; // shortest track
int MaxTracks; // max # of peaks to track
int PeakWidth; // min sample width for peaks (+- x)
TrackFrame_op* BaseFr;
// Private methods
void FindPeaks(FFT_op& spectra, int frameNum, TrackFrame_op* thePeaks);
TrackData_op* GetBestMatch(float pitch, TrackFrame_op* frame);
void TrackPeaks();
void ContinuePeaks();
};
#endif
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