#include "ardour/process_thread.h"
#include "ardour/scene_changer.h"
#include "ardour/session.h"
-#include "ardour/slave.h"
+#include "ardour/transport_master.h"
+#include "ardour/transport_master_manager.h"
#include "ardour/ticker.h"
#include "ardour/types.h"
#include "ardour/vca.h"
if (processing_blocked()) {
_silent = true;
+ cerr << "%%%%%%%%%%%%%% session process blocked\n";
return;
}
}
}
+bool
+Session::compute_audible_delta (samplepos_t& pos_and_delta) const
+{
+ if (_transport_speed == 0.0 || _count_in_samples > 0 || _remaining_latency_preroll > 0) {
+ /* cannot compute audible delta, because the session is
+ generating silence that does not correspond to the timeline,
+ but is instead filling playback buffers to manage latency
+ alignment.
+ */
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("still adjusting for latency (%1) and/or count-in (%2) or stopped %1\n", _remaining_latency_preroll, _count_in_samples, _transport_speed));
+ return false;
+ }
+
+ pos_and_delta -= _transport_sample;
+ return true;
+}
+
/** Process callback used when the auditioner is not active */
void
Session::process_with_events (pframes_t nframes)
immediate_events.pop_front ();
process_event (ev);
}
-
/* only count-in when going to roll at speed 1.0 */
if (_transport_speed != 1.0 && _count_in_samples > 0) {
_count_in_samples = 0;
assert (_count_in_samples == 0 || _remaining_latency_preroll == 0 || _count_in_samples == _remaining_latency_preroll);
+ DEBUG_TRACE (DEBUG::Transport, string_compose ("Running count in/latency preroll of %1 & %2\n", _count_in_samples, _remaining_latency_preroll));
+
while (_count_in_samples > 0 || _remaining_latency_preroll > 0) {
samplecnt_t ns;
return;
}
- if (!_exporting && _slave) {
- if (!follow_slave (nframes)) {
+ if (!_exporting && config.get_external_sync()) {
+ if (!follow_transport_master (nframes)) {
+ ltc_tx_send_time_code_for_cycle (_transport_sample, end_sample, _target_transport_speed, _transport_speed, nframes);
return;
}
}
}
}
-void
-Session::reset_slave_state ()
-{
- average_slave_delta = 1800;
- delta_accumulator_cnt = 0;
- have_first_delta_accumulator = false;
- _slave_state = Stopped;
- DiskReader::set_no_disk_output (false);
-}
-
bool
Session::transport_locked () const
{
- Slave* sl = _slave;
-
- if (!locate_pending() && (!config.get_external_sync() || (sl && sl->ok() && sl->locked()))) {
- return true;
- }
-
- return false;
-}
-
-bool
-Session::follow_slave (pframes_t nframes)
-{
- double slave_speed;
- samplepos_t slave_transport_sample;
- samplecnt_t this_delta;
- int dir;
-
- if (!_slave->ok()) {
- stop_transport ();
- config.set_external_sync (false);
- goto noroll;
- }
-
- _slave->speed_and_position (slave_speed, slave_transport_sample);
-
- DEBUG_TRACE (DEBUG::Slave, string_compose ("Slave position %1 speed %2\n", slave_transport_sample, slave_speed));
-
- if (!_slave->locked()) {
- DEBUG_TRACE (DEBUG::Slave, "slave not locked\n");
- goto noroll;
- }
-
- if (slave_transport_sample > _transport_sample) {
- this_delta = slave_transport_sample - _transport_sample;
- dir = 1;
- } else {
- this_delta = _transport_sample - slave_transport_sample;
- dir = -1;
- }
-
- if (_slave->starting()) {
- slave_speed = 0.0f;
- }
-
- if (_slave->is_always_synced() ||
- (Config->get_timecode_source_is_synced() && (dynamic_cast<TimecodeSlave*>(_slave)) != 0)
- ) {
-
- /* if the TC source is synced, then we assume that its
- speed is binary: 0.0 or 1.0
- */
-
- if (slave_speed != 0.0f) {
- slave_speed = 1.0f;
- }
-
- } else {
-
- /* if we are chasing and the average delta between us and the
- master gets too big, we want to switch to silent
- motion. so keep track of that here.
- */
-
- if (_slave_state == Running) {
- calculate_moving_average_of_slave_delta(dir, abs(this_delta));
- }
- }
-
- track_slave_state (slave_speed, slave_transport_sample, this_delta);
-
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave state %1 @ %2 speed %3 cur delta %4 avg delta %5\n",
- _slave_state, slave_transport_sample, slave_speed, this_delta, average_slave_delta));
-
-
- if (_slave_state == Running && !_slave->is_always_synced() && !(Config->get_timecode_source_is_synced() && (dynamic_cast<TimecodeSlave*>(_slave)) != 0)) {
-
- /* may need to varispeed to sync with slave */
-
- if (_transport_speed != 0.0f) {
-
- /*
- note that average_dir is +1 or -1
- */
-
- float delta;
-
- if (average_slave_delta == 0) {
- delta = this_delta;
- delta *= dir;
- } else {
- delta = average_slave_delta;
- delta *= average_dir;
- }
-
-#ifndef NDEBUG
- if (slave_speed != 0.0) {
- DEBUG_TRACE (DEBUG::Slave, string_compose ("delta = %1 speed = %2 ts = %3 M@%4 S@%5 avgdelta %6\n",
- (int) (dir * this_delta),
- slave_speed,
- _transport_speed,
- _transport_sample,
- slave_transport_sample,
- average_slave_delta));
- }
-#endif
-
- if (_slave->give_slave_full_control_over_transport_speed()) {
- set_transport_speed (slave_speed, 0, false, false);
- //std::cout << "set speed = " << slave_speed << "\n";
- } else {
- float adjusted_speed = slave_speed + (1.5 * (delta / float(_current_sample_rate)));
- request_transport_speed (adjusted_speed);
- DEBUG_TRACE (DEBUG::Slave, string_compose ("adjust using %1 towards %2 ratio %3 current %4 slave @ %5\n",
- delta, adjusted_speed, adjusted_speed/slave_speed, _transport_speed,
- slave_speed));
- }
-
- if (!actively_recording() && (samplecnt_t) average_slave_delta > _slave->resolution()) {
- DEBUG_TRACE (DEBUG::Slave, string_compose ("average slave delta %1 greater than slave resolution %2 => no disk output\n", average_slave_delta, _slave->resolution()));
- /* run routes as normal, but no disk output */
- DiskReader::set_no_disk_output (true);
- return true;
- }
-
- if (!have_first_delta_accumulator) {
- DEBUG_TRACE (DEBUG::Slave, "waiting for first slave delta accumulator to be ready, no disk output\n");
- /* run routes as normal, but no disk output */
- DiskReader::set_no_disk_output (true);
- return true;
- }
- }
- }
-
-
- if (!have_first_delta_accumulator) {
- DEBUG_TRACE (DEBUG::Slave, "still waiting to compute slave delta, no disk output\n");
- DiskReader::set_no_disk_output (true);
- } else {
- DiskReader::set_no_disk_output (false);
- }
-
- if ((_slave_state == Running) && (0 == (post_transport_work () & ~PostTransportSpeed))) {
- /* speed is set, we're locked, and good to go */
+ if (!locate_pending() && (!config.get_external_sync() || (transport_master()->ok() && transport_master()->locked()))) {
return true;
}
- noroll:
- /* don't move at all */
- DEBUG_TRACE (DEBUG::Slave, "no roll\n")
- no_roll (nframes);
return false;
}
-void
-Session::calculate_moving_average_of_slave_delta (int dir, samplecnt_t this_delta)
-{
- if (delta_accumulator_cnt >= delta_accumulator_size) {
- have_first_delta_accumulator = true;
- delta_accumulator_cnt = 0;
- }
-
- if (delta_accumulator_cnt != 0 || this_delta < _current_sample_rate) {
- delta_accumulator[delta_accumulator_cnt++] = (samplecnt_t) dir * (samplecnt_t) this_delta;
- }
-
- if (have_first_delta_accumulator) {
- average_slave_delta = 0L;
- for (int i = 0; i < delta_accumulator_size; ++i) {
- average_slave_delta += delta_accumulator[i];
- }
- average_slave_delta /= (int32_t) delta_accumulator_size;
- if (average_slave_delta < 0L) {
- average_dir = -1;
- average_slave_delta = average_slave_delta;
- } else {
- average_dir = 1;
- }
- }
-}
-
-void
-Session::track_slave_state (float slave_speed, samplepos_t slave_transport_sample, samplecnt_t /*this_delta*/)
-{
- if (slave_speed != 0.0f) {
-
- /* slave is running */
-
- switch (_slave_state) {
- case Stopped:
- if (_slave->requires_seekahead()) {
- slave_wait_end = slave_transport_sample + _slave->seekahead_distance ();
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, but running, requires seekahead to %1\n", slave_wait_end));
- /* we can call locate() here because we are in process context */
- locate (slave_wait_end, false, false);
- _slave_state = Waiting;
-
- } else {
-
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped -> running at %1\n", slave_transport_sample));
-
- memset (delta_accumulator, 0, sizeof (int32_t) * delta_accumulator_size);
- average_slave_delta = 0L;
-
- Location* al = _locations->auto_loop_location();
-
- if (al && play_loop && (slave_transport_sample < al->start() || slave_transport_sample > al->end())) {
- // cancel looping
- request_play_loop(false);
- }
-
- if (slave_transport_sample != _transport_sample) {
- DEBUG_TRACE (DEBUG::Slave, string_compose ("require locate to run. eng: %1 -> sl: %2\n", _transport_sample, slave_transport_sample));
- locate (slave_transport_sample, false, false);
- }
- _slave_state = Running;
- }
- break;
-
- case Waiting:
- default:
- break;
- }
-
- if (_slave_state == Waiting) {
-
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave waiting at %1\n", slave_transport_sample));
-
- if (slave_transport_sample >= slave_wait_end) {
-
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave start at %1 vs %2\n", slave_transport_sample, _transport_sample));
-
- _slave_state = Running;
-
- /* now perform a "micro-seek" within the disk buffers to realign ourselves
- precisely with the master.
- */
-
-
- bool ok = true;
- samplecnt_t sample_delta = slave_transport_sample - _transport_sample;
-
- boost::shared_ptr<RouteList> rl = routes.reader();
- for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
- boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
- if (tr && !tr->can_internal_playback_seek (sample_delta)) {
- ok = false;
- break;
- }
- }
-
- if (ok) {
- for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
- boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
- if (tr) {
- tr->internal_playback_seek (sample_delta);
- }
- }
- _transport_sample += sample_delta;
-
- } else {
- cerr << "cannot micro-seek\n";
- /* XXX what? */
- }
- }
- }
-
- if (_slave_state == Running && _transport_speed == 0.0f) {
- DEBUG_TRACE (DEBUG::Slave, "slave starts transport\n");
- start_transport ();
- }
-
- } else { // slave_speed is 0
-
- /* slave has stopped */
-
- if (_transport_speed != 0.0f) {
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stops transport: %1 sample %2 tf %3\n", slave_speed, slave_transport_sample, _transport_sample));
- stop_transport ();
- }
-
- if (slave_transport_sample != _transport_sample) {
- DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, move to %1\n", slave_transport_sample));
- force_locate (slave_transport_sample, false);
- }
-
- reset_slave_state();
- }
-}
-
void
Session::process_without_events (pframes_t nframes)
{
return;
}
- if (!_exporting && _slave) {
- if (!follow_slave (nframes)) {
+ if (!_exporting && config.get_external_sync()) {
+ if (!follow_transport_master (nframes)) {
ltc_tx_send_time_code_for_cycle (_transport_sample, _transport_sample, 0, 0 , nframes);
return;
}
}
+ assert (_transport_speed == 0 || _transport_speed == 1.0 || _transport_speed == -1.0);
+
if (_transport_speed == 0) {
no_roll (nframes);
return;
+ } else {
+ samples_moved = (samplecnt_t) nframes;
}
- assert (_transport_speed == 1.f || _transport_speed == -1.f);
- samples_moved = (samplecnt_t) nframes * _transport_speed;
-
if (!_exporting && !timecode_transmission_suspended()) {
send_midi_time_code_for_cycle (_transport_sample, _transport_sample + samples_moved, nframes);
}
set_transport_speed (ev->speed, ev->target_sample, ev->yes_or_no, ev->second_yes_or_no, ev->third_yes_or_no);
break;
+ case SessionEvent::SetTransportMaster:
+ TransportMasterManager::instance().set_current (ev->transport_master);
+ break;
+
case SessionEvent::PunchIn:
// cerr << "PunchIN at " << transport_sample() << endl;
if (config.get_punch_in() && record_status() == Enabled) {
overwrite_some_buffers (static_cast<Track*>(ev->ptr));
break;
- case SessionEvent::SetSyncSource:
- DEBUG_TRACE (DEBUG::Slave, "seen request for new slave\n");
- use_sync_source (ev->slave);
- break;
-
case SessionEvent::Audition:
set_audition (ev->region);
// drop reference to region
return max_samplepos;
}
- if (_slave) {
+ if (config.get_external_sync()) {
return max_samplepos;
}
}
pthread_mutex_unlock (&_rt_emit_mutex);
}
+
+bool
+Session::follow_transport_master (pframes_t nframes)
+{
+ TransportMasterManager& tmm (TransportMasterManager::instance());
+
+ double slave_speed;
+ samplepos_t slave_transport_sample;
+ sampleoffset_t delta;
+
+ if (tmm.master_invalid_this_cycle()) {
+ DEBUG_TRACE (DEBUG::Slave, "session told not to use the transport master this cycle\n");
+ goto noroll;
+ }
+
+ slave_speed = tmm.get_current_speed_in_process_context();
+ slave_transport_sample = tmm.get_current_position_in_process_context ();
+ delta = _transport_sample - slave_transport_sample;
+
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("session at %1, master at %2, delta: %3 res: %4\n", _transport_sample, slave_transport_sample, delta, tmm.current()->resolution()));
+
+ track_transport_master (slave_speed, slave_transport_sample);
+
+ if (transport_master_tracking_state == Running) {
+
+ if (!actively_recording() && fabs (delta) > tmm.current()->resolution()) {
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("average slave delta %1 greater than slave resolution %2\n", delta, tmm.current()->resolution()));
+ if (micro_locate (-delta) != 0) {
+ DEBUG_TRACE (DEBUG::Slave, "micro-locate didn't work, set no disk output true\n");
+
+ /* run routes as normal, but no disk output */
+ DiskReader::set_no_disk_output (true);
+ }
+ return true;
+ }
+
+ if (transport_master_tracking_state == Running) {
+ /* speed is set, we're locked, and good to go */
+ DiskReader::set_no_disk_output (false);
+ return true;
+ }
+ }
+
+ noroll:
+ /* don't move at all */
+ DEBUG_TRACE (DEBUG::Slave, "no roll\n")
+ no_roll (nframes);
+ return false;
+}
+
+void
+Session::track_transport_master (float slave_speed, samplepos_t slave_transport_sample)
+{
+ boost::shared_ptr<TransportMaster> master (TransportMasterManager::instance().current());
+
+ assert (master);
+
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("session has master tracking state as %1\n", transport_master_tracking_state));
+
+ if (slave_speed != 0.0f) {
+
+ /* slave is running */
+
+ switch (transport_master_tracking_state) {
+ case Stopped:
+ if (master->requires_seekahead()) {
+ master_wait_end = slave_transport_sample + master->seekahead_distance ();
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, but running, requires seekahead to %1\n", master_wait_end));
+ /* we can call locate() here because we are in process context */
+ if (micro_locate (master_wait_end - _transport_sample) != 0) {
+ locate (master_wait_end, false, false);
+ }
+ transport_master_tracking_state = Waiting;
+
+ } else {
+
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped -> running at %1\n", slave_transport_sample));
+
+ if (slave_transport_sample != _transport_sample) {
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("require locate to run. eng: %1 -> sl: %2\n", _transport_sample, slave_transport_sample));
+ if (micro_locate (slave_transport_sample - _transport_sample) != 0) {
+ locate (slave_transport_sample, false, false);
+ }
+ }
+ transport_master_tracking_state = Running;
+ }
+ break;
+
+ case Waiting:
+ default:
+ break;
+ }
+
+ if (transport_master_tracking_state == Waiting) {
+
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave waiting at %1\n", slave_transport_sample));
+
+ if (slave_transport_sample >= master_wait_end) {
+
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave start at %1 vs %2\n", slave_transport_sample, _transport_sample));
+
+ transport_master_tracking_state = Running;
+
+ /* now perform a "micro-seek" within the disk buffers to realign ourselves
+ precisely with the master.
+ */
+
+ if (micro_locate (slave_transport_sample - _transport_sample) != 0) {
+ cerr << "cannot micro-seek\n";
+ /* XXX what? */
+ }
+ }
+ }
+
+ if (transport_master_tracking_state == Running && _transport_speed == 0.0f) {
+ DEBUG_TRACE (DEBUG::Slave, "slave starts transport\n");
+ start_transport ();
+ }
+
+ } else { // slave_speed is 0
+
+ /* slave has stopped */
+
+ if (_transport_speed != 0.0f) {
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stops transport: %1 sample %2 tf %3\n", slave_speed, slave_transport_sample, _transport_sample));
+ stop_transport ();
+ }
+
+ if (slave_transport_sample != _transport_sample) {
+ DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, move to %1\n", slave_transport_sample));
+ force_locate (slave_transport_sample, false);
+ }
+
+ reset_slave_state();
+ }
+}
+
+void
+Session::reset_slave_state ()
+{
+ transport_master_tracking_state = Stopped;
+ DiskReader::set_no_disk_output (false);
+}
projects / ardour.git / blobdiff