view dsp/segmentation/segment.h @ 456:05378924b433

Fix a rounding issue, returning key value 25

The two bins above center B minor are treated as 25. This patch shifts also
the input chromagram by 2 to have center C on 1 like the profiles

#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