#include "pbd/signals.h"
+#include "timecode/time.h"
+
#include "ardour/types.h"
#include "midi++/parser.h"
#include "midi++/types.h"
-class PIChaser;
+#ifdef HAVE_LTC
+#include <ltc.h>
+#endif
+
+/* used for approximate_current_delta(): */
+#define PLUSMINUS(A) ( ((A)<0) ? "-" : (((A)>0) ? "+" : "\u00B1") )
+#define LEADINGZERO(A) ( (A)<10 ? " " : (A)<100 ? " " : (A)<1000 ? " " : (A)<10000 ? " " : "" )
namespace MIDI {
class Port;
* @return - whether ARDOUR should use the slave speed without any adjustments
*/
virtual bool give_slave_full_control_over_transport_speed() const { return false; }
+
+ /**
+ * @return - current time-delta between engine and sync-source
+ */
+ virtual std::string approximate_current_delta() const { return ""; }
+
};
/// We need this wrapper for testability, it's just too hard to mock up a session class
}
};
-class MTC_Slave : public Slave {
+class TimecodeSlave : public Slave {
+ public:
+ TimecodeSlave () {}
+
+ virtual Timecode::TimecodeFormat apparent_timecode_format() const = 0;
+
+ /* this is intended to be used by a UI and polled from a timeout. it should
+ return a string describing the current position of the TC source. it
+ should NOT do any computation, but should use a cached value
+ of the TC source position.
+ */
+ virtual std::string approximate_current_position() const = 0;
+
+ framepos_t timecode_offset;
+ bool timecode_negative_offset;
+};
+
+class MTC_Slave : public TimecodeSlave {
public:
MTC_Slave (Session&, MIDI::Port&);
~MTC_Slave ();
void handle_locate (const MIDI::byte*);
framecnt_t resolution () const;
- bool requires_seekahead () const { return true; }
+ bool requires_seekahead () const { return false; }
framecnt_t seekahead_distance() const;
bool give_slave_full_control_over_transport_speed() const;
+ Timecode::TimecodeFormat apparent_timecode_format() const;
+ std::string approximate_current_position() const;
+ std::string approximate_current_delta() const;
+
private:
Session& session;
MIDI::Port* port;
PBD::ScopedConnectionList port_connections;
+ PBD::ScopedConnection config_connection;
bool can_notify_on_unknown_rate;
- PIChaser* pic;
static const int frame_tolerance;
MIDI::byte last_mtc_fps_byte;
framepos_t window_begin;
framepos_t window_end;
- framepos_t last_mtc_timestamp;
- framepos_t last_mtc_frame;
+ framepos_t first_mtc_timestamp;
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;
+ Timecode::TimecodeFormat saved_tc_format;
Glib::Threads::Mutex reset_lock;
uint32_t reset_pending;
bool reset_position;
+ int transport_direction;
+ int busy_guard1;
+ int busy_guard2;
+
+ double speedup_due_to_tc_mismatch;
+ double quarter_frame_duration;
+ Timecode::TimecodeFormat mtc_timecode;
+ Timecode::TimecodeFormat a3e_timecode;
+ Timecode::Time timecode;
+ bool printed_timecode_warning;
+ frameoffset_t current_delta;
+
+ /* DLL - chase MTC */
+ double t0; ///< time at the beginning of the MTC quater frame
+ double t1; ///< calculated end of the MTC quater frame
+ double e2; ///< second order loop error
+ double b, c, omega; ///< DLL filter coefficients
+
+ /* DLL - sync engine */
+ int engine_dll_initstate;
+ double te0; ///< time at the beginning of the engine process
+ double te1; ///< calculated sync time
+ double ee2; ///< second order loop error
+ double be, ce, oe; ///< DLL filter coefficients
void reset (bool with_pos);
void queue_reset (bool with_pos);
void read_current (SafeTime *) const;
void reset_window (framepos_t);
bool outside_window (framepos_t) const;
- void process_apparent_speed (double);
+ void init_mtc_dll(framepos_t, double);
+ void init_engine_dll (framepos_t, framepos_t);
+ void parse_timecode_offset();
+ void parameter_changed(std::string const & p);
+};
+
+#ifdef HAVE_LTC
+class LTC_Slave : public TimecodeSlave {
+public:
+ LTC_Slave (Session&);
+ ~LTC_Slave ();
+
+ bool speed_and_position (double&, framepos_t&);
+
+ bool locked() const;
+ bool ok() const;
+
+ framecnt_t resolution () const;
+ bool requires_seekahead () const { return false; }
+ framecnt_t seekahead_distance () const { return 0; }
+ bool give_slave_full_control_over_transport_speed() const { return true; }
+
+ Timecode::TimecodeFormat apparent_timecode_format() const;
+ std::string approximate_current_position() const;
+ std::string approximate_current_delta() const;
+
+ private:
+ void parse_ltc(const jack_nframes_t, const jack_default_audio_sample_t * const, const framecnt_t);
+ void process_ltc(framepos_t const);
+ void init_engine_dll (framepos_t, int32_t);
+ bool detect_discontinuity(LTCFrameExt *, int, bool);
+ bool detect_ltc_fps(int, bool);
+ bool equal_ltc_frame_time(LTCFrame *a, LTCFrame *b);
+ void reset();
+ void resync_xrun();
+ void resync_latency();
+ void parse_timecode_offset();
+ void parameter_changed(std::string const & p);
+
+ Session& session;
+ bool did_reset_tc_format;
+ Timecode::TimecodeFormat saved_tc_format;
+
+ LTCDecoder * decoder;
+ double frames_per_ltc_frame;
+ Timecode::Time timecode;
+ LTCFrameExt prev_frame;
+ bool fps_detected;
+
+ framecnt_t monotonic_cnt;
+ framecnt_t last_timestamp;
+ framecnt_t last_ltc_frame;
+ double ltc_speed;
+ frameoffset_t current_delta;
+ int delayedlocked;
+
+ int ltc_detect_fps_cnt;
+ int ltc_detect_fps_max;
+ bool printed_timecode_warning;
+ Timecode::TimecodeFormat ltc_timecode;
+ Timecode::TimecodeFormat a3e_timecode;
+
+ PBD::ScopedConnectionList port_connections;
+ PBD::ScopedConnection config_connection;
+ jack_latency_range_t ltc_slave_latency;
+
+ /* DLL - chase LTC */
+ int transport_direction;
+ int engine_dll_initstate;
+ double t0; ///< time at the beginning of the MTC quater frame
+ double t1; ///< calculated end of the MTC quater frame
+ double e2; ///< second order loop error
+ double b, c; ///< DLL filter coefficients
};
+#endif
class MIDIClock_Slave : public Slave {
public:
bool give_slave_full_control_over_transport_speed() const { return true; }
void set_bandwidth (double a_bandwith) { bandwidth = a_bandwith; }
+ std::string approximate_current_delta() const;
protected:
ISlaveSessionProxy* session;
/// DLL filter coefficients
double b, c, omega;
+ frameoffset_t current_delta;
+
void reset ();
void start (MIDI::Parser& parser, framepos_t timestamp);
void contineu (MIDI::Parser& parser, framepos_t timestamp);
projects / ardour.git / blobdiff