2 Copyright (C) 2008 Torben Hohn
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __libardour_pi_controller__
20 #define __libardour_pi_controller__
22 #include "ardour/types.h"
26 PIController (double resample_factor, int fir_size);
29 void reset (double resample_factor) {
30 resample_mean = resample_factor;
31 static_resample_factor = resample_factor;
35 double get_ratio (int fill_level, int period_size);
40 double static_resample_factor;
43 int offset_differential_index;
44 double offset_integral;
51 double current_resample_factor;
55 #define ESTIMATOR_SIZE 16
62 double get_ratio( framepos_t chasetime_measured, framepos_t chasetime, framepos_t slavetime_measured, framepos_t slavetime, bool in_control, int period_size );
64 framepos_t want_locate() { return want_locate_val; }
68 framepos_t realtime_stamps[ESTIMATOR_SIZE];
69 framepos_t chasetime_stamps[ESTIMATOR_SIZE];
71 framepos_t want_locate_val;
73 void feed_estimator( framepos_t realtime, framepos_t chasetime );
74 double get_estimate();
78 double speed_threshold;
79 framepos_t pos_threshold;
82 #endif /* __libardour_pi_controller__ */