ref: f8714ee0615e25a50d77668df664535665a46bf7
dir: /src/beattracking.h/
/*
Copyright (C) 2003 Matthew Davies and Paul Brossier
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef BEATTRACKING_H
#define BEATTRACKING_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* beat tracking object
*/
typedef struct _aubio_beattracking_t aubio_beattracking_t;
/**
* create beat tracking object
* \param frame size [512]
* \param step increment - both in detection function samples -i.e. 11.6ms or 1 onset frame [128]
* \param length over which beat period is found [128]
* \param parameter for rayleigh weight vector - sets preferred tempo to 120bpm [43]
* \param channel number (not functionnal) [1] */
aubio_beattracking_t * new_aubio_beattracking(uint_t winlen,
uint_t step,
uint_t laglen,
uint_t rayparam,
uint_t channels);
/**
* track the beat
* \param beat tracking object
* \param current input detection function frame. already smoothed by adaptive median threshold.
* \param stored tactus candidate positions
*/
void aubio_beattracking_do(aubio_beattracking_t * bt, fvec_t * dfframes, fvec_t * out);
/**
* delete beat tracker object
*/
void del_aubio_beattracking(aubio_beattracking_t * p);
#ifdef __cplusplus
}
#endif
#endif /* BEATTRACKING_H */