| 1 | /* |
|---|
| 2 | Copyright (C) 2006-2009 Paul Brossier <piem@aubio.org> |
|---|
| 3 | |
|---|
| 4 | This file is part of aubio. |
|---|
| 5 | |
|---|
| 6 | aubio is free software: you can redistribute it and/or modify |
|---|
| 7 | it under the terms of the GNU General Public License as published by |
|---|
| 8 | the Free Software Foundation, either version 3 of the License, or |
|---|
| 9 | (at your option) any later version. |
|---|
| 10 | |
|---|
| 11 | aubio is distributed in the hope that it will be useful, |
|---|
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 14 | GNU General Public License for more details. |
|---|
| 15 | |
|---|
| 16 | You should have received a copy of the GNU General Public License |
|---|
| 17 | along with aubio. If not, see <http://www.gnu.org/licenses/>. |
|---|
| 18 | |
|---|
| 19 | */ |
|---|
| 20 | |
|---|
| 21 | /** \file |
|---|
| 22 | |
|---|
| 23 | Tempo detection driver |
|---|
| 24 | |
|---|
| 25 | This object stores all the memory required for tempo detection algorithm |
|---|
| 26 | and returns the estimated beat locations. |
|---|
| 27 | |
|---|
| 28 | \example tempo/test-tempo.h |
|---|
| 29 | |
|---|
| 30 | */ |
|---|
| 31 | |
|---|
| 32 | #ifndef TEMPO_H |
|---|
| 33 | #define TEMPO_H |
|---|
| 34 | |
|---|
| 35 | #ifdef __cplusplus |
|---|
| 36 | extern "C" { |
|---|
| 37 | #endif |
|---|
| 38 | |
|---|
| 39 | /** tempo detection structure */ |
|---|
| 40 | typedef struct _aubio_tempo_t aubio_tempo_t; |
|---|
| 41 | |
|---|
| 42 | /** create tempo detection object */ |
|---|
| 43 | aubio_tempo_t * new_aubio_tempo (char_t * method, |
|---|
| 44 | uint_t buf_size, uint_t hop_size, uint_t samplerate); |
|---|
| 45 | |
|---|
| 46 | /** execute tempo detection */ |
|---|
| 47 | void aubio_tempo_do (aubio_tempo_t *o, fvec_t * input, fvec_t * tempo); |
|---|
| 48 | |
|---|
| 49 | /** set tempo detection silence threshold */ |
|---|
| 50 | uint_t aubio_tempo_set_silence(aubio_tempo_t * o, smpl_t silence); |
|---|
| 51 | |
|---|
| 52 | /** set tempo detection peak picking threshold */ |
|---|
| 53 | uint_t aubio_tempo_set_threshold(aubio_tempo_t * o, smpl_t threshold); |
|---|
| 54 | |
|---|
| 55 | /** get current tempo |
|---|
| 56 | |
|---|
| 57 | \param bt beat tracking object |
|---|
| 58 | |
|---|
| 59 | Returns the currently observed tempo, or 0 if no consistent value is found |
|---|
| 60 | |
|---|
| 61 | */ |
|---|
| 62 | smpl_t aubio_tempo_get_bpm(aubio_tempo_t * bt); |
|---|
| 63 | |
|---|
| 64 | /** get current tempo confidence |
|---|
| 65 | |
|---|
| 66 | \param bt beat tracking object |
|---|
| 67 | |
|---|
| 68 | Returns the confidence with which the tempo has been observed, 0 if no |
|---|
| 69 | consistent value is found. |
|---|
| 70 | |
|---|
| 71 | */ |
|---|
| 72 | smpl_t aubio_tempo_get_confidence(aubio_tempo_t * bt); |
|---|
| 73 | |
|---|
| 74 | /** delete tempo detection object */ |
|---|
| 75 | void del_aubio_tempo(aubio_tempo_t * o); |
|---|
| 76 | |
|---|
| 77 | #ifdef __cplusplus |
|---|
| 78 | } |
|---|
| 79 | #endif |
|---|
| 80 | |
|---|
| 81 | #endif /* TEMPO_H */ |
|---|
