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-rw-r--r--libs/ardour/ardour/pi_controller.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/libs/ardour/ardour/pi_controller.h b/libs/ardour/ardour/pi_controller.h
index f992e6a18c..d3cd0eb6bf 100644
--- a/libs/ardour/ardour/pi_controller.h
+++ b/libs/ardour/ardour/pi_controller.h
@@ -19,6 +19,8 @@
#ifndef __libardour_pi_controller__
#define __libardour_pi_controller__
+#include "ardour/types.h"
+
class PIController {
public:
@@ -48,6 +50,35 @@ class PIController {
int smooth_size;
double smooth_offset;
double current_resample_factor;
+ bool fir_empty;
};
+#define ESTIMATOR_SIZE 16
+
+class PIChaser {
+ public:
+ PIChaser();
+ ~PIChaser();
+
+ double get_ratio( nframes64_t realtime, nframes64_t chasetime, nframes64_t slavetime, bool in_control );
+ void reset();
+ nframes64_t want_locate() { return want_locate_val; }
+
+ private:
+ PIController *pic;
+ nframes64_t realtime_stamps[ESTIMATOR_SIZE];
+ nframes64_t chasetime_stamps[ESTIMATOR_SIZE];
+ int array_index;
+ nframes64_t want_locate_val;
+
+ void feed_estimator( nframes64_t realtime, nframes64_t chasetime );
+ double get_estimate();
+
+ double speed;
+
+ double speed_threshold;
+ nframes64_t pos_threshold;
+};
+
+
#endif /* __libardour_pi_controller__ */