#include <vector>
+#include <glibmm/thread.h>
+
#include <jack/jack.h>
-#include <sigc++/signal.h>
+#include "pbd/signals.h"
+
#include "ardour/types.h"
#include "midi++/parser.h"
#include "midi++/types.h"
+class PIChaser;
+
namespace MIDI {
class Port;
}
* and after the method call they should
*
* Session::follow_slave will then try to follow the given
- * <emph>position</emph> using a delay locked loop (DLL),
+ * <em>position</em> using a delay locked loop (DLL),
* starting with the first given transport speed.
* If the values of speed and position contradict each other,
* ARDOUR will always follow the position and disregard the speed.
* @param position - The transport position requested
* @return - The return value is currently ignored (see Session::follow_slave)
*/
- virtual bool speed_and_position (double& speed, nframes64_t& position) = 0;
+ virtual bool speed_and_position (double& speed, framepos_t& position) = 0;
/**
* reports to ARDOUR whether the Slave is currently synced to its external
* @return - the timing resolution of the Slave - If the distance of ARDOURs transport
* to the slave becomes greater than the resolution, sound will stop
*/
- virtual nframes_t resolution() const = 0;
+ virtual framecnt_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 requires_seekahead() returns true.
+ */
+
+ virtual framecnt_t seekahead_distance() const { return 0; }
+
/**
* @return - when returning true, ARDOUR will use transport speed 1.0 no matter what
* the slave returns
/// We need this wrapper for testability, it's just too hard to mock up a session class
class ISlaveSessionProxy {
public:
- virtual TempoMap& tempo_map() const { return *((TempoMap *) 0); }
- virtual nframes_t frame_rate() const { return 0; }
- virtual nframes64_t audible_frame () const { return 0; }
- virtual nframes64_t transport_frame () const { return 0; }
- virtual nframes_t frames_since_cycle_start () const { return 0; }
- virtual nframes64_t frame_time () const { return 0; }
-
- virtual void request_locate (nframes64_t /*frame*/, bool with_roll = false) {
+ virtual ~ISlaveSessionProxy() {}
+ virtual TempoMap& tempo_map() const { return *((TempoMap *) 0); }
+ virtual framecnt_t frame_rate() const { return 0; }
+ virtual framepos_t audible_frame () const { return 0; }
+ virtual framepos_t transport_frame () const { return 0; }
+ virtual pframes_t frames_since_cycle_start () const { return 0; }
+ virtual framepos_t frame_time () const { return 0; }
+
+ virtual void request_locate (framepos_t /*frame*/, bool with_roll = false) {
(void) with_roll;
}
virtual void request_transport_speed (double /*speed*/) {}
public:
SlaveSessionProxy(Session &s) : session(s) {}
- TempoMap& tempo_map() const;
- nframes_t frame_rate() const;
- nframes64_t audible_frame () const;
- nframes64_t transport_frame () const;
- nframes_t frames_since_cycle_start () const;
- nframes64_t frame_time () const;
+ TempoMap& tempo_map() const;
+ framecnt_t frame_rate() const;
+ framepos_t audible_frame () const;
+ framepos_t transport_frame () const;
+ pframes_t frames_since_cycle_start () const;
+ framepos_t frame_time () const;
- void request_locate (nframes64_t frame, bool with_roll = false);
+ void request_locate (framepos_t frame, bool with_roll = false);
void request_transport_speed (double speed);
};
struct SafeTime {
- volatile int guard1;
- nframes64_t position;
- nframes64_t timestamp;
- double speed;
- volatile int guard2;
-
- SafeTime() {
- guard1 = 0;
- position = 0;
- timestamp = 0;
- speed = 0;
- guard2 = 0;
- }
+ volatile int guard1;
+ framepos_t position;
+ framepos_t timestamp;
+ double speed;
+ volatile int guard2;
+
+ SafeTime() {
+ guard1 = 0;
+ position = 0;
+ timestamp = 0;
+ speed = 0;
+ guard2 = 0;
+ }
};
-class MTC_Slave : public Slave, public sigc::trackable {
+class MTC_Slave : public Slave {
public:
MTC_Slave (Session&, MIDI::Port&);
~MTC_Slave ();
void rebind (MIDI::Port&);
- bool speed_and_position (double&, nframes64_t&);
+ bool speed_and_position (double&, framepos_t&);
bool locked() const;
bool ok() const;
void handle_locate (const MIDI::byte*);
- nframes_t resolution() const;
+ framecnt_t resolution () const;
bool requires_seekahead () const { return true; }
+ framecnt_t seekahead_distance() const;
+ bool give_slave_full_control_over_transport_speed() const;
private:
Session& session;
MIDI::Port* port;
- std::vector<sigc::connection> connections;
+ PBD::ScopedConnectionList port_connections;
bool can_notify_on_unknown_rate;
-
- 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;
-
- void reset ();
- void update_mtc_qtr (MIDI::Parser&);
- void update_mtc_time (const MIDI::byte *, bool);
- void update_mtc_status (MIDI::Parser::MTC_Status);
+ PIChaser* pic;
+
+ static const int frame_tolerance;
+
+ SafeTime current;
+ framepos_t mtc_frame; /* current time */
+ framepos_t last_inbound_frame; /* when we got it; audio clocked */
+ MIDI::byte last_mtc_fps_byte;
+ framepos_t window_begin;
+ framepos_t window_end;
+ framepos_t last_mtc_timestamp;
+ framepos_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;
+ Glib::Mutex reset_lock;
+ uint32_t reset_pending;
+ bool reset_position;
+
+ void reset (bool with_pos);
+ void queue_reset (bool with_pos);
+ void maybe_reset ();
+
+ void update_mtc_qtr (MIDI::Parser&, int, framepos_t);
+ void update_mtc_time (const MIDI::byte *, bool, framepos_t);
+ void update_mtc_status (MIDI::MTC_Status);
void read_current (SafeTime *) const;
- double compute_apparent_speed (nframes64_t);
+ void reset_window (framepos_t);
+ bool outside_window (framepos_t) const;
+ void process_apparent_speed (double);
};
-class MIDIClock_Slave : public Slave, public sigc::trackable {
+class MIDIClock_Slave : public Slave {
public:
MIDIClock_Slave (Session&, MIDI::Port&, int ppqn = 24);
/// Constructor for unit tests
- MIDIClock_Slave (ISlaveSessionProxy* session_proxy, int ppqn = 24);
+ MIDIClock_Slave (ISlaveSessionProxy* session_proxy = 0, int ppqn = 24);
~MIDIClock_Slave ();
void rebind (MIDI::Port&);
- bool speed_and_position (double&, nframes64_t&);
+ bool speed_and_position (double&, framepos_t&);
bool locked() const;
bool ok() const;
bool starting() const;
- nframes_t resolution() const;
+ framecnt_t resolution () const;
bool requires_seekahead () const { return false; }
bool give_slave_full_control_over_transport_speed() const { return true; }
void set_bandwidth (double a_bandwith) { bandwidth = a_bandwith; }
- private:
+ protected:
ISlaveSessionProxy* session;
MIDI::Port* port;
- std::vector<sigc::connection> connections;
+ PBD::ScopedConnectionList port_connections;
/// pulses per quarter note for one MIDI clock frame (default 24)
int ppqn;
double one_ppqn_in_frames;
/// the timestamp of the first MIDI clock message
- nframes_t first_timestamp;
+ framepos_t first_timestamp;
/// the time stamp and should-be transport position of the last inbound MIDI clock message
- nframes_t last_timestamp;
+ framepos_t last_timestamp;
double should_be_position;
/// the number of midi clock messages received (zero-based)
double b, c, omega;
void reset ();
- void start (MIDI::Parser& parser, nframes64_t timestamp);
- void contineu (MIDI::Parser& parser, nframes64_t timestamp);
- void stop (MIDI::Parser& parser, nframes64_t timestamp);
+ void start (MIDI::Parser& parser, framepos_t timestamp);
+ void contineu (MIDI::Parser& parser, framepos_t timestamp);
+ void stop (MIDI::Parser& parser, framepos_t timestamp);
void position (MIDI::Parser& parser, MIDI::byte* message, size_t size);
// we can't use continue because it is a C++ keyword
- void calculate_one_ppqn_in_frames_at(nframes64_t time);
- nframes64_t calculate_song_position(uint16_t song_position_in_sixteenth_notes);
+ void calculate_one_ppqn_in_frames_at(framepos_t time);
+ framepos_t calculate_song_position(uint16_t song_position_in_sixteenth_notes);
void calculate_filter_coefficients();
- void update_midi_clock (MIDI::Parser& parser, nframes64_t timestamp);
+ void update_midi_clock (MIDI::Parser& parser, framepos_t timestamp);
void read_current (SafeTime *) const;
- bool stop_if_no_more_clock_events(nframes64_t& pos, nframes64_t now);
+ bool stop_if_no_more_clock_events(framepos_t& pos, framepos_t now);
/// whether transport should be rolling
bool _started;
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:
JACK_Slave (jack_client_t*);
~JACK_Slave ();
- bool speed_and_position (double& speed, nframes64_t& pos);
+ bool speed_and_position (double& speed, framepos_t& pos);
bool starting() const { return _starting; }
bool locked() const;
bool ok() const;
- nframes_t resolution() const { return 1; }
+ framecnt_t resolution () const { return 1; }
bool requires_seekahead () const { return false; }
void reset_client (jack_client_t* jack);
bool is_always_synced() const { return true; }
projects / ardour.git / blobdiff