* sending MIDI clock works, hooray\!
git-svn-id: svn://localhost/ardour2/branches/3.0@4268 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -52,7 +52,7 @@ protected:
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class MidiClockTicker : public Ticker
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{
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public:
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MidiClockTicker() : _jack_port(0), _ppqn(24) {};
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MidiClockTicker() : _jack_port(0), _ppqn(24), _last_tick(0.0) {};
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virtual ~MidiClockTicker() {};
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void tick(
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@ -66,13 +66,27 @@ public:
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/// slot for the signal session::MIDIClock_PortChanged
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void update_midi_clock_port();
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/// slot for the signal session::TransportStateChange
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void transport_state_changed();
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/// slot for the signal session::PositionChanged
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void position_changed(nframes_t position);
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/// slot for the signal session::TransportLooped
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void transport_looped();
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/// pulses per quarter note (default 24)
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void set_ppqn(int ppqn) { _ppqn = ppqn; }
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private:
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MIDI::JACK_MidiPort* _jack_port;
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nframes_t _last_tick;
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int _ppqn;
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double _last_tick;
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void send_midi_clock_event(nframes_t offset);
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void send_start_event(nframes_t offset);
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void send_continue_event(nframes_t offset);
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void send_stop_event(nframes_t offset);
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};
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}
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@ -42,6 +42,9 @@ void MidiClockTicker::set_session(Session& s)
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if(_session) {
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_session->MIDIClock_PortChanged.connect(mem_fun (*this, &MidiClockTicker::update_midi_clock_port));
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_session->TransportStateChange .connect(mem_fun (*this, &MidiClockTicker::transport_state_changed));
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_session->PositionChanged .connect(mem_fun (*this, &MidiClockTicker::position_changed));
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_session->TransportLooped .connect(mem_fun (*this, &MidiClockTicker::transport_looped));
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update_midi_clock_port();
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}
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}
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@ -51,6 +54,70 @@ void MidiClockTicker::update_midi_clock_port()
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_jack_port = (MIDI::JACK_MidiPort*) _session->midi_clock_port();
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}
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void MidiClockTicker::transport_state_changed()
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{
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float speed = _session->transport_speed();
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nframes_t position = _session->transport_frame();
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//cerr << "Transport state change, speed:" << speed << "position:" << position << endl;
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if (speed == 1.0f) {
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_last_tick = position;
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if (!Config->get_send_midi_clock())
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return;
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if (position == 0) {
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send_start_event(0);
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} else {
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send_continue_event(0);
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}
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send_midi_clock_event(0);
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} else if (speed == 0.0f) {
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if (!Config->get_send_midi_clock())
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return;
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send_stop_event(0);
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}
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}
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void MidiClockTicker::position_changed(nframes_t position)
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{
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cerr << "Position changed:" << position << endl;
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_last_tick = position;
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}
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void MidiClockTicker::transport_looped()
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{
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nframes_t position = _session->transport_frame();
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cerr << "Transport looped, position:" << position << endl;
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}
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void MidiClockTicker::send_midi_clock_event(nframes_t offset)
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{
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static uint8_t _midi_clock_tick[1] = { MIDI_CMD_COMMON_CLOCK };
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_jack_port->write(_midi_clock_tick, 1, offset);
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}
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void MidiClockTicker::send_start_event(nframes_t offset)
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{
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static uint8_t _midi_clock_tick[1] = { MIDI_CMD_COMMON_START };
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_jack_port->write(_midi_clock_tick, 1, offset);
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}
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void MidiClockTicker::send_continue_event(nframes_t offset)
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{
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static uint8_t _midi_clock_tick[1] = { MIDI_CMD_COMMON_CONTINUE };
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_jack_port->write(_midi_clock_tick, 1, offset);
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}
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void MidiClockTicker::send_stop_event(nframes_t offset)
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{
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static uint8_t _midi_clock_tick[1] = { MIDI_CMD_COMMON_STOP };
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_jack_port->write(_midi_clock_tick, 1, offset);
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}
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void MidiClockTicker::tick(const nframes_t& transport_frames, const BBT_Time& transport_bbt, const SMPTE::Time& transport_smpt)
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{
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if (!Config->get_send_midi_clock() || _session == 0 || _session->transport_speed() != 1.0f)
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@ -65,14 +132,19 @@ void MidiClockTicker::tick(const nframes_t& transport_frames, const BBT_Time& tr
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double quarter_notes_per_beat = 4.0 / current_tempo.note_type();
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double frames_per_quarter_note = frames_per_beat / quarter_notes_per_beat;
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nframes_t one_ppqn_in_frames = frames_per_quarter_note / double (_ppqn);
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double one_ppqn_in_frames = frames_per_quarter_note / double (_ppqn);
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nframes_t next_tick = _last_tick + one_ppqn_in_frames;
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nframes_t next_tick_offset = next_tick - transport_frames;
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double next_tick = _last_tick + one_ppqn_in_frames;
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nframes_t next_tick_offset = nframes_t(next_tick) - transport_frames;
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//cerr << "Transport:" << transport_frames << ":Next tick time:" << next_tick << ":" << "Offset:" << next_tick_offset << endl;
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if (next_tick_offset >= _jack_port->nframes_this_cycle())
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return;
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assert(_jack_port->is_process_thread());
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static uint8_t _midi_clock_tick[1] = { MIDI_CMD_COMMON_TICK };
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_jack_port->write(_midi_clock_tick, 1, next_tick_offset);
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send_midi_clock_event(next_tick_offset);
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_last_tick = next_tick;
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}
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@ -63,6 +63,8 @@ public:
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static pthread_t get_process_thread () { return _process_thread; }
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static bool is_process_thread();
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nframes_t nframes_this_cycle() const { return _nframes_this_cycle; }
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protected:
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std::string get_typestring () const {
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return typestring;
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