annotate dsp/segmentation/segment.h @ 321:f1e6be2de9a5

A threshold (delta) is added in the peak picking parameters structure (PPickParams). It is used as an offset when computing the smoothed detection function. A constructor for the structure PPickParams is also added to set the parameters to 0 when a structure instance is created. Hence programmes using the peak picking parameter structure and which do not set the delta parameter (e.g. QM Vamp note onset detector) won't be affected by the modifications.

Functions modified:
- dsp/onsets/PeakPicking.cpp
- dsp/onsets/PeakPicking.h
- dsp/signalconditioning/DFProcess.cpp
- dsp/signalconditioning/DFProcess.h

#ifndef _SEGMENT_H
#define _SEGMENT_H

#ifdef __cplusplus
extern "C" {
#endif

/*
 *  segment.h
 *
 *  Created by Mark Levy on 06/04/2006.
 *  Copyright 2006 Centre for Digital Music, Queen Mary, University of London.

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
 *
 */

typedef struct segment_t
{
	long start;			/* in samples */
	long end;
	int type;
} segment_t;

typedef struct segmentation_t
{
	int nsegs;			/* number of segments */
	int nsegtypes;		/* number of segment types, so possible types are {0,1,...,nsegtypes-1} */
	int samplerate;
	segment_t* segments;
} segmentation_t;

typedef enum 
{ 
	FEATURE_TYPE_UNKNOWN = 0, 
	FEATURE_TYPE_CONSTQ = 1, 
	FEATURE_TYPE_CHROMA = 2,
	FEATURE_TYPE_MFCC = 3
} feature_types;

#ifdef __cplusplus
}
#endif

#endif