#include "midi++/parser.h"
#include "midi++/types.h"
+class PIController;
+
namespace MIDI {
class Port;
}
virtual nframes_t resolution() const = 0;
/**
- * @return - when returning true, ARDOUR will wait for one second before transport
+ * @return - when returning true, ARDOUR will wait for seekahead_distance() before transport
* starts rolling
*/
virtual bool requires_seekahead () const = 0;
+ /**
+ * @return the number of frames that this slave wants to seek ahead. Relevant
+ * only if @func requires_seekahead() returns true.
+ */
+
+ virtual nframes64_t seekahead_distance() const { return 0; }
+
/**
* @return - when returning true, ARDOUR will use transport speed 1.0 no matter what
* the slave returns
nframes_t resolution() const;
bool requires_seekahead () const { return true; }
+ nframes64_t seekahead_distance() const;
+ bool give_slave_full_control_over_transport_speed() const;
private:
Session& session;
MIDI::Port* port;
std::vector<sigc::connection> connections;
bool can_notify_on_unknown_rate;
-
+ PIController* pic;
+
SafeTime current;
- double instantaneous_speed;
nframes_t mtc_frame; /* current time */
nframes_t last_inbound_frame; /* when we got it; audio clocked */
MIDI::byte last_mtc_fps_byte;
-
- static const int32_t accumulator_size = 128;
- double accumulator[accumulator_size];
- int32_t accumulator_index;
- bool have_first_accumulated_speed;
+ nframes64_t window_begin;
+ nframes64_t window_end;
+ nframes64_t last_mtc_timestamp;
+ nframes64_t last_mtc_frame;
+ bool did_reset_tc_format;
+ TimecodeFormat saved_tc_format;
+ size_t speed_accumulator_size;
+ double* speed_accumulator;
+ size_t speed_accumulator_cnt;
+ bool have_first_speed_accumulator;
+ double average_speed;
void reset ();
- void update_mtc_qtr (MIDI::Parser&);
- void update_mtc_time (const MIDI::byte *, bool);
- void update_mtc_status (MIDI::Parser::MTC_Status);
+ void update_mtc_qtr (MIDI::Parser&, int, nframes_t);
+ void update_mtc_time (const MIDI::byte *, bool, nframes_t);
+ void update_mtc_status (MIDI::MTC_Status);
void read_current (SafeTime *) const;
- double compute_apparent_speed (nframes64_t);
+ void reset_window (nframes64_t);
+ bool outside_window (nframes64_t) const;
+ void process_apparent_speed (double);
};
class MIDIClock_Slave : public Slave, public sigc::trackable {
bool _starting;
};
-class ADAT_Slave : public Slave
-{
- public:
- ADAT_Slave () {}
- ~ADAT_Slave () {}
-
- bool speed_and_position (double& speed, nframes64_t& pos) {
- speed = 0;
- pos = 0;
- return false;
- }
-
- bool locked() const { return false; }
- bool ok() const { return false; }
- nframes_t resolution() const { return 1; }
- bool requires_seekahead () const { return true; }
-};
-
class JACK_Slave : public Slave
{
public: