ardour/livetrax
13
0
Fork 0
Code

Aux-Send Latency compensation, part 2 & code-consolidation

Browse Source
This commit is contained in:
Robin Gareus 2017-09-29 04:17:16 +02:00
parent 9f9e948d84
commit 2b20f30d81
3 changed files with 126 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
libs/ardour/ardour/session.h
View File

@ -170,7 +170,7 @@ private:
/** Ardour Session */
class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionList, public SessionEventManager
{
private:
private:
enum SubState {
PendingDeclickIn = 0x1, ///< pending de-click fade-in for start
PendingDeclickOut = 0x2, ///< pending de-click fade-out for stop
@ -180,7 +180,7 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
PendingLocate = 0x20,
};
public:
public:
enum RecordState {
Disabled = 0,
Enabled = 1,
@ -473,12 +473,10 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
void set_end_is_free (bool);
int location_name(std::string& result, std::string base = std::string(""));
pframes_t get_block_size () const { return current_block_size; }
samplecnt_t worst_output_latency () const { return _worst_output_latency; }
samplecnt_t worst_input_latency () const { return _worst_input_latency; }
samplecnt_t worst_track_latency () const { return _worst_track_latency; }
samplecnt_t worst_track_out_latency () const { return _worst_track_out_latency; }
samplecnt_t worst_playback_latency () const { return std::max (_worst_output_latency, _worst_track_latency); }
pframes_t get_block_size () const { return current_block_size; }
samplecnt_t worst_output_latency () const { return _worst_output_latency; }
samplecnt_t worst_input_latency () const { return _worst_input_latency; }
samplecnt_t worst_route_latency () const { return _worst_route_latency; }
samplecnt_t worst_latency_preroll () const;
struct SaveAs {
@ -1207,7 +1205,7 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
void auto_connect_thread_wakeup ();
protected:
protected:
friend class AudioEngine;
void set_block_size (pframes_t nframes);
void set_sample_rate (samplecnt_t nframes);
@ -1215,12 +1213,11 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
void reconnect_existing_routes (bool withLock, bool reconnect_master = true, bool reconnect_inputs = true, bool reconnect_outputs = true);
#endif
protected:
friend class Route;
void schedule_curve_reallocation ();
void update_latency_compensation (bool force = false);
private:
private:
int create (const std::string& mix_template, BusProfile*);
void destroy ();
@ -1262,14 +1259,13 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
CubicInterpolation interpolation;
bool auto_play_legal;
samplepos_t _last_slave_transport_sample;
samplecnt_t maximum_output_latency;
samplepos_t _requested_return_sample;
samplepos_t _last_slave_transport_sample;
samplepos_t _requested_return_sample;
pframes_t current_block_size;
samplecnt_t _worst_output_latency;
samplecnt_t _worst_input_latency;
samplecnt_t _worst_track_latency;
samplecnt_t _worst_track_out_latency;
samplecnt_t _worst_output_latency;
samplecnt_t _worst_input_latency;
samplecnt_t _worst_route_latency;
uint32_t _send_latency_changes;
bool _have_captured;
bool _non_soloed_outs_muted;
bool _listening;
@ -1288,16 +1284,15 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
PBD::ScopedConnection ltc_status_connection;
void initialize_latencies ();
void set_worst_io_latencies ();
void set_worst_playback_latency ();
void set_worst_capture_latency ();
void set_worst_io_latencies_x (IOChange, void *) {
set_worst_io_latencies ();
}
void post_capture_latency ();
void post_playback_latency ();
void update_latency (bool playback);
bool update_route_latency (bool reverse, bool apply_to_delayline);
void update_latency_compensation_proxy (void* ignored);
void set_worst_io_latencies ();
void set_worst_output_latency ();
void set_worst_input_latency ();
void send_latency_compensation_change ();
void set_worst_io_latencies_x (IOChange, void *);
void ensure_buffers (ChanCount howmany = ChanCount::ZERO);
@ -1793,15 +1788,13 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
mutable Glib::Threads::Mutex source_lock;
public:
public:
typedef std::map<PBD::ID,boost::shared_ptr<Source> > SourceMap;
private:
private:
void reset_write_sources (bool mark_write_complete, bool force = false);
SourceMap sources;
private:
int load_sources (const XMLNode& node);
XMLNode& get_sources_as_xml ();
@ -1903,8 +1896,6 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
void process_rtop (SessionEvent*);
void update_latency (bool playback);
enum snapshot_t {
NormalSave,
SnapshotKeep,

10
libs/ardour/route.cc
View File

@ -4045,11 +4045,18 @@ Route::add_export_point()
samplecnt_t
Route::update_signal_latency (bool apply_to_delayline)
{
// TODO: bail out if !active() and set/assume _signal_latency = 0,
// here or in Session::* ? -> also zero send latencies,
// and make sure that re-enabling a route updates things again...
Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
samplecnt_t l_in = 0; // _input->latency ();
samplecnt_t l_in = 0;
samplecnt_t l_out = _output->user_latency();
for (ProcessorList::reverse_iterator i = _processors.rbegin(); i != _processors.rend(); ++i) {
if (boost::shared_ptr<Send> snd = boost::dynamic_pointer_cast<Send> (*i)) {
snd->set_delay_in (l_out + _output->latency());
}
(*i)->set_output_latency (l_out);
if ((*i)->active ()) {
l_out += (*i)->signal_latency ();
@ -4069,7 +4076,6 @@ Route::update_signal_latency (bool apply_to_delayline)
(*i)->set_capture_offset (_input->latency ());
}
lm.release ();
if (apply_to_delayline) {

177
libs/ardour/session.cc
View File

@ -194,13 +194,12 @@ Session::Session (AudioEngine &eng,
, _target_transport_speed (0.0)
, auto_play_legal (false)
, _last_slave_transport_sample (0)
, maximum_output_latency (0)
, _requested_return_sample (-1)
, current_block_size (0)
, _worst_output_latency (0)
, _worst_input_latency (0)
, _worst_track_latency (0)
, _worst_track_out_latency (0)
, _worst_route_latency (0)
, _send_latency_changes (0)
, _have_captured (false)
, _non_soloed_outs_muted (false)
, _listening (false)
@ -463,6 +462,8 @@ Session::Session (AudioEngine &eng,
StartTimeChanged.connect_same_thread (*this, boost::bind (&Session::start_time_changed, this, _1));
EndTimeChanged.connect_same_thread (*this, boost::bind (&Session::end_time_changed, this, _1));
Send::ChangedLatency.connect_same_thread (*this, boost::bind (&Session::send_latency_compensation_change, this));
emit_thread_start ();
auto_connect_thread_start ();
@ -5717,13 +5718,9 @@ Session::graph_reordered ()
resort_routes ();
/* force all diskstreams to update their capture offset values to
reflect any changes in latencies within the graph.
*/
boost::shared_ptr<RouteList> rl = routes.reader ();
for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
(*i)->update_signal_latency (true); // XXX
}
* reflect any changes in latencies within the graph.
*/
update_route_latency (false, true);
}
/** @return Number of samples that there is disk space available to write,
@ -6832,10 +6829,77 @@ Session::unknown_processors () const
return p;
}
void
Session::set_worst_io_latencies_x (IOChange, void *)
{
set_worst_io_latencies ();
}
void
Session::send_latency_compensation_change ()
{
/* As a result of Send::set_output_latency()
* or InternalReturn::set_playback_offset ()
* the send's own latency can change (source track
* is aligned with target bus).
*
* This can only happen be triggered by
* Route::update_signal_latency ()
* when updating the processor latency.
*
* We need to walk the graph again to take those changes into account
* (we should probably recurse or process the graph in a 2 step process).
*/
++_send_latency_changes;
}
bool
Session::update_route_latency (bool playback, bool apply_to_delayline)
{
/* Note: RouteList is process-graph sorted */
boost::shared_ptr<RouteList> r = routes.reader ();
if (playback) {
/* reverse the list so that we work backwards from the last route to run to the first,
* this is not needed, but can help to reduce the iterations for aux-sends.
*/
RouteList* rl = routes.reader().get();
r.reset (new RouteList (*rl));
reverse (r->begin(), r->end());
}
bool changed = false;
int bailout = 0;
restart:
_send_latency_changes = 0;
_worst_route_latency = 0;
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
// if (!(*i)->active()) { continue ; } // TODO
samplecnt_t l;
if ((*i)->signal_latency () != (l = (*i)->update_signal_latency (apply_to_delayline))) {
changed = true;
}
_worst_route_latency = std::max (l, _worst_route_latency);
}
if (_send_latency_changes > 0) {
// only 1 extra iteration is needed (we allow only 1 level of aux-sends)
// BUT.. jack'n'sends'n'bugs
if (++bailout < 5) {
cerr << "restarting Session::update_latency. # of send changes: " << _send_latency_changes << " iteration: " << bailout << endl;
goto restart;
}
}
DEBUG_TRACE (DEBUG::Latency, string_compose ("worst signal processing latency: %1 (changed ? %2)\n", _worst_route_latency, (changed ? "yes" : "no")));
return changed;
}
void
Session::update_latency (bool playback)
{
DEBUG_TRACE (DEBUG::Latency, string_compose ("JACK latency callback: %1\n", (playback ? "PLAYBACK" : "CAPTURE")));
if ((_state_of_the_state & (InitialConnecting|Deletion)) || _adding_routes_in_progress || _route_deletion_in_progress) {
@ -6861,47 +6925,16 @@ Session::update_latency (bool playback)
}
if (playback) {
post_playback_latency ();
set_worst_output_latency ();
update_route_latency (true, true);
} else {
post_capture_latency ();
set_worst_input_latency ();
update_route_latency (false, false);
}
DEBUG_TRACE (DEBUG::Latency, "JACK latency callback: DONE\n");
}
void
Session::post_playback_latency ()
{
set_worst_playback_latency ();
boost::shared_ptr<RouteList> r = routes.reader ();
_worst_track_out_latency = 0; // XXX remove me
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
assert (!(*i)->is_auditioner()); // XXX remove me
_worst_track_latency = max (_worst_track_latency, (*i)->update_signal_latency ());
}
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
if (!(*i)->active()) { continue ; }
(*i)->apply_latency_compensation ();
}
}
void
Session::post_capture_latency ()
{
set_worst_capture_latency ();
/* reflect any changes in capture latencies into capture offsets */
boost::shared_ptr<RouteList> rl = routes.reader();
for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
(*i)->update_signal_latency ();
}
}
void
Session::initialize_latencies ()
{
@ -6917,12 +6950,12 @@ Session::initialize_latencies ()
void
Session::set_worst_io_latencies ()
{
set_worst_playback_latency ();
set_worst_capture_latency ();
set_worst_output_latency ();
set_worst_input_latency ();
}
void
Session::set_worst_playback_latency ()
Session::set_worst_output_latency ()
{
if (_state_of_the_state & (InitialConnecting|Deletion)) {
return;
@ -6946,7 +6979,7 @@ Session::set_worst_playback_latency ()
}
void
Session::set_worst_capture_latency ()
Session::set_worst_input_latency ()
{
if (_state_of_the_state & (InitialConnecting|Deletion)) {
return;
@ -6961,54 +6994,32 @@ Session::set_worst_capture_latency ()
boost::shared_ptr<RouteList> r = routes.reader ();
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
if (!tr) {
continue;
}
_worst_input_latency = max (_worst_input_latency, (*i)->input()->latency());
}
DEBUG_TRACE (DEBUG::Latency, string_compose ("Worst input latency: %1\n", _worst_input_latency));
DEBUG_TRACE (DEBUG::Latency, string_compose ("Worst input latency: %1\n", _worst_input_latency));
}
void
Session::update_latency_compensation (bool force_whole_graph)
{
// TODO: consolidate
bool some_track_latency_changed = false;
if (_state_of_the_state & (InitialConnecting|Deletion)) {
return;
}
DEBUG_TRACE(DEBUG::Latency, "---------------------------- update latency compensation\n\n");
_worst_track_latency = 0;
boost::shared_ptr<RouteList> r = routes.reader ();
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
assert (!(*i)->is_auditioner()); // XXX remove me
if ((*i)->active()) {
samplecnt_t tl;
if ((*i)->signal_latency () != (tl = (*i)->update_signal_latency () /* - (*i)->output()->user_latency()*/)) {
some_track_latency_changed = true;
}
_worst_track_latency = max (tl, _worst_track_latency);
}
}
DEBUG_TRACE (DEBUG::Latency, string_compose ("worst signal processing latency: %1 (changed ? %2)\n", _worst_track_latency,
(some_track_latency_changed ? "yes" : "no")));
DEBUG_TRACE(DEBUG::Latency, "---------------------------- DONE update latency compensation\n\n");
bool some_track_latency_changed = update_route_latency (false, false);
if (some_track_latency_changed || force_whole_graph) {
_engine.update_latencies ();
}
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
(*i)->update_signal_latency (true);
/* above call will ask the backend up update its latencies, which
* eventually will trigger AudioEngine::latency_callback () and
* call Session::update_latency ()
*/
} else {
boost::shared_ptr<RouteList> r = routes.reader ();
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
(*i)->apply_latency_compensation ();
}
}
}