#include "ardour/audioengine.h"
#include "ardour/midi_buffer.h"
#include "ardour/midi_port.h"
+#include "ardour/lmath.h"
#include "ardour/ticker.h"
#include "ardour/session.h"
#include "ardour/tempo.h"
{
public:
- Position() : speed(0.0f), frame(0) { }
- ~Position() { }
+ Position() : speed(0.0f), frame(0), midi_beats(0) { }
+ ~Position() { }
- /** Sync timing information taken from the given Session
- @return True if timings differed */
- bool sync (Session* s) {
+ /** Sync timing information taken from the given Session
+ * @return True if timings differed
+ */
- bool didit = false;
+ bool sync (Session* s) {
- double sp = s->transport_speed();
- framecnt_t fr = s->transport_frame();
+ bool changed = false;
- if (speed != sp) {
- speed = sp;
- didit = true;
- }
+ double sp = s->transport_speed();
+ framecnt_t fr = s->transport_frame();
- if (frame != fr) {
- frame = fr;
- didit = true;
- }
+ if (speed != sp) {
+ speed = sp;
+ changed = true;
+ }
- /* Midi beats and clocks always gets updated for now */
+ if (frame != fr) {
+ frame = fr;
+ changed = true;
+ }
- s->bbt_time (this->frame, *this);
+ /* Midi beats and clocks always gets updated for now */
- const TempoMap& tempo = s->tempo_map();
+ s->bbt_time (this->frame, *this);
- const double divisions = tempo.meter_at(frame).divisions_per_bar();
- const double divisor = tempo.meter_at(frame).note_divisor();
- const double qnote_scale = divisor * 0.25f;
+ const TempoMap& tempo = s->tempo_map();
+ const Meter& meter = tempo.meter_at_frame (frame);
- /** Midi Beats in terms of Song Position Pointer is equivalent to total
- sixteenth notes at 'time' */
+ const double divisions = meter.divisions_per_bar();
+ const double divisor = meter.note_divisor();
+ const double qnote_scale = divisor * 0.25f;
+ double mb;
- midi_beats = (((bars - 1) * divisions) + beats - 1);
- midi_beats += (double)ticks / (double)Position::ticks_per_beat * qnote_scale;
- midi_beats *= 16.0f / divisor;
+ /** Midi Beats in terms of Song Position Pointer is equivalent to total
+ * sixteenth notes at 'time'
+ */
- midi_clocks = midi_beats * 6.0f;
+ mb = (((bars - 1) * divisions) + beats - 1);
+ mb += (double)ticks / (double)Position::ticks_per_beat * qnote_scale;
+ mb *= 16.0f / divisor;
- return didit;
- }
+ if (mb != midi_beats) {
+ midi_beats = mb;
+ midi_clocks = midi_beats * 6.0f;
+ changed = true;
+ }
- double speed;
- framecnt_t frame;
- double midi_beats;
- double midi_clocks;
+ return changed;
+ }
- void print (std::ostream& s) {
- s << "frames: " << frame << " midi beats: " << midi_beats << " speed: " << speed;
- }
+ double speed;
+ framecnt_t frame;
+ double midi_beats;
+ double midi_clocks;
+
+ void print (std::ostream& s) {
+ s << "frames: " << frame << " midi beats: " << midi_beats << " speed: " << speed;
+ }
};
MidiClockTicker::set_session (Session* s)
{
SessionHandlePtr::set_session (s);
-
+
if (_session) {
_session->TransportStateChange.connect_same_thread (_session_connections, boost::bind (&MidiClockTicker::transport_state_changed, this));
_session->TransportLooped.connect_same_thread (_session_connections, boost::bind (&MidiClockTicker::transport_looped, this));
{
DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Session Located: %1, speed: %2\n", _session->transport_frame(), _session->transport_speed()));
- if (0 == _session || ! _pos->sync (_session)) {
+ if (!_session || !_pos->sync (_session)) {
return;
}
void
MidiClockTicker::update_midi_clock_port()
{
- _midi_port = AudioEngine::instance()->midi_clock_output_port();
+ _midi_port = _session->midi_clock_output_port();
}
void
void
MidiClockTicker::tick (const framepos_t& /* transport_frame */, pframes_t nframes)
{
- if (!Config->get_send_midi_clock() || _session == 0 || _session->transport_speed() != 1.0f || _midi_port == 0) {
+ if (!Config->get_send_midi_clock() || _session == 0 || _midi_port == 0) {
return;
}
if (_send_pos) {
if (_pos->speed == 0.0f) {
- uint32_t where = llrint (_pos->midi_beats);
- send_position_event (where, 0, nframes);
+ send_position_event (llrint (_pos->midi_beats), 0, nframes);
} else if (_pos->speed == 1.0f) {
-#if 1
- /* Experimental. To really do this and have accuracy, the
- stop/locate/continue sequence would need queued to send immediately
- before the next midi clock. */
-
send_stop_event (0, nframes);
-
+
if (_pos->frame == 0) {
send_start_event (0, nframes);
} else {
- uint32_t where = llrint (_pos->midi_beats);
- send_position_event (where, 0, nframes);
+ send_position_event (llrint (_pos->midi_beats), 0, nframes);
send_continue_event (0, nframes);
}
-#endif
} else {
/* Varispeed not supported */
}
- _send_pos = true;
+ _send_pos = false;
}
+
if (_send_state) {
if (_pos->speed == 1.0f) {
if (_session->get_play_loop()) {
assert(_session->locations()->auto_loop_location());
-
+
if (_pos->frame == _session->locations()->auto_loop_location()->start()) {
send_start_event (0, nframes);
} else {
send_continue_event (0, nframes);
}
-
+
} else if (_pos->frame == 0) {
send_start_event (0, nframes);
} else {
send_continue_event (0, nframes);
}
-
+
// send_midi_clock_event (0);
-
+
} else if (_pos->speed == 0.0f) {
send_stop_event (0, nframes);
send_position_event (llrint (_pos->midi_beats), 0, nframes);
_send_state = false;
}
+ if (_session->transport_speed() != 1.0f) {
+ /* no varispeed support and nothing to do after this if stopped */
+ return;
+ }
const framepos_t end = _pos->frame + nframes;
double iter = _last_tick;
double
MidiClockTicker::one_ppqn_in_frames (framepos_t transport_position)
{
- const Tempo& current_tempo = _session->tempo_map().tempo_at (transport_position);
- double frames_per_beat = current_tempo.frames_per_beat (_session->nominal_frame_rate());
+ const Tempo& current_tempo = _session->tempo_map().tempo_at_frame (transport_position);
+ double frames_per_beat = _session->tempo_map().frames_per_beat_at (transport_position, _session->nominal_frame_rate());
double quarter_notes_per_beat = 4.0 / current_tempo.note_type();
double frames_per_quarter_note = frames_per_beat / quarter_notes_per_beat;
return;
}
- DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Tick with offset %1\n", offset));
+ static uint8_t msg = MIDI_CMD_COMMON_CLOCK;
- static uint8_t tick_byte = { MIDI_CMD_COMMON_CLOCK };
MidiBuffer& mb (_midi_port->get_midi_buffer (nframes));
- mb.push_back (offset, 1, &tick_byte);
+ mb.push_back (offset, 1, &msg);
+
+ DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Tick with offset %1\n", offset));
}
void
return;
}
- DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Start %1\n", _last_tick));
-
- static uint8_t tick_byte = { MIDI_CMD_COMMON_START };
+ static uint8_t msg = { MIDI_CMD_COMMON_START };
MidiBuffer& mb (_midi_port->get_midi_buffer (nframes));
- mb.push_back (offset, 1, &tick_byte);
+ mb.push_back (offset, 1, &msg);
+
+ DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Start %1\n", _last_tick));
}
void
return;
}
- DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Continue %1\n", _last_tick));
-
- static uint8_t tick_byte = { MIDI_CMD_COMMON_CONTINUE };
+ static uint8_t msg = { MIDI_CMD_COMMON_CONTINUE };
MidiBuffer& mb (_midi_port->get_midi_buffer (nframes));
- mb.push_back (offset, 1, &tick_byte);
+ mb.push_back (offset, 1, &msg);
+
+ DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Continue %1\n", _last_tick));
}
void
return;
}
- DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Stop %1\n", _last_tick));
-
- static uint8_t tick_byte = { MIDI_CMD_COMMON_STOP };
+ static uint8_t msg = MIDI_CMD_COMMON_STOP;
MidiBuffer& mb (_midi_port->get_midi_buffer (nframes));
- mb.push_back (offset, 1, &tick_byte);
+ mb.push_back (offset, 1, &msg);
+
+ DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Stop %1\n", _last_tick));
}
void
MidiBuffer& mb (_midi_port->get_midi_buffer (nframes));
mb.push_back (offset, 3, &msg[0]);
- DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Song Position Sent: %1\n", midi_beats));
+ DEBUG_TRACE (DEBUG::MidiClock, string_compose ("Song Position Sent: %1 to %2 (events now %3, buf = %4)\n", midi_beats, _midi_port->name(),
+ mb.size(), &mb));
+
}
projects / ardour.git / blobdiff