ref: acf2ec07a907aa03df6aeb67f203718a8288f4fd
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 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 */