void set_latency (framecnt_t);
#ifdef HAVE_JACK_NEW_LATENCY
- void get_connected_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const;
- void set_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const;
+ void get_connected_latency_range (jack_latency_range_t& range, bool playback) const;
+ void set_latency_range (jack_latency_range_t& range, bool playback) const;
#endif
virtual void reset ();
void all_processors_flip();
void all_processors_active (Placement, bool state);
- void set_latency_ranges (jack_latency_callback_mode_t mode) const;
+ void set_latency_ranges (bool playback) const;
virtual framecnt_t update_total_latency();
void set_latency_delay (framecnt_t);
void set_user_latency (framecnt_t);
void set_mute_master_solo ();
void set_processor_positions ();
- void update_port_latencies (const PortSet& ports, jack_latency_callback_mode_t mode, framecnt_t) const;
+ void update_port_latencies (const PortSet& ports, const PortSet& feeders, bool playback, framecnt_t) const;
};
} // namespace ARDOUR
void
AudioEngine::jack_latency_callback (jack_latency_callback_mode_t mode)
{
- cerr << "JACK LATENCY CALLBACK\n";
if (_session) {
_session->update_latency (mode == JackPlaybackLatency);
- } else {
- cerr << "NO SESSION\n";
}
}
void
AudioEngine::update_total_latencies ()
{
-#ifdef HAVE_JACK_RECOMPUTE_LATENCIES
GET_PRIVATE_JACK_POINTER (_jack);
jack_recompute_total_latencies (_priv_jack);
-#endif
}
string
#include "libardour-config.h"
#endif
+#include <stdexcept>
+
#include <jack/weakjack.h> // so that we can test for new functions at runtime
+#include "pbd/error.h"
+#include "pbd/compose.h"
+
+#include "ardour/debug.h"
#include "ardour/port.h"
#include "ardour/audioengine.h"
#include "pbd/failed_constructor.h"
-#include "pbd/error.h"
-#include "pbd/compose.h"
-#include <stdexcept>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
+using namespace PBD;
AudioEngine* Port::_engine = 0;
pframes_t Port::_buffer_size = 0;
}
void
-Port::set_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const
+Port::set_latency_range (jack_latency_range_t& range, bool playback) const
{
#ifdef HAVE_JACK_NEW_LATENCY
if (!jack_port_set_latency_range) {
return;
}
- jack_port_set_latency_range (_jack_port, mode, &range);
+ jack_port_set_latency_range (_jack_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &range);
#endif
}
void
-Port::get_connected_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const
+Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const
{
#ifdef HAVE_JACK_NEW_LATENCY
if (!jack_port_get_latency_range) {
jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
jack_latency_range_t lr;
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("\t%1 connected to %2\n", name(), *c));
+
if (remote_port) {
- jack_port_get_latency_range (remote_port, mode, &lr);
+ jack_port_get_latency_range (remote_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &lr);
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("\t\tremote has latency range %1 .. %2\n", lr.min, lr.max));
range.min = min (range.min, lr.min);
- range.min = max (range.max, lr.max);
+ range.max = max (range.max, lr.max);
}
}
*/
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
#include <cmath>
#include <fstream>
#include <cassert>
}
void
-Route::set_latency_ranges (jack_latency_callback_mode_t mode) const
+Route::set_latency_ranges (bool playback) const
{
- if (mode == JackPlaybackLatency) {
- update_port_latencies (_input->ports (), mode, _input->effective_latency());
+ framecnt_t own_latency = 0;
+
+ /* Processor list not protected by lock: MUST BE CALLED FROM PROCESS THREAD OR
+ LATENCY CALLBACK
+ */
+
+ for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
+ if ((*i)->active ()) {
+ own_latency += (*i)->signal_latency ();
+ }
+ }
+
+ if (playback) {
+ update_port_latencies (_input->ports (), _output->ports (), true, own_latency);
} else {
- update_port_latencies (_output->ports (), mode, _output->effective_latency());
+ update_port_latencies (_output->ports (), _input->ports (), false, own_latency);
}
-
}
void
-Route::update_port_latencies (const PortSet& ports, jack_latency_callback_mode_t mode, framecnt_t our_latency) const
+Route::update_port_latencies (const PortSet& operands, const PortSet& feeders, bool playback, framecnt_t our_latency) const
{
#ifdef HAVE_JACK_NEW_LATENCY
- /* iterate over all connected ports and get the latency range
- they represent
- */
-
- for (PortSet::const_iterator p = ports.begin(); p != ports.end(); ++p) {
+ /* we assume that all our input ports feed all our output ports. its not
+ universally true, but the alternative is way too corner-case to worry about.
+ */
+
+ jack_latency_range_t all_connections;
+
+ all_connections.min = ~((jack_nframes_t) 0);
+ all_connections.max = 0;
+
+ /* iterate over all feeder ports and determine their relevant latency, taking
+ the maximum and minimum across all of them.
+ */
+
+ for (PortSet::const_iterator p = feeders.begin(); p != feeders.end(); ++p) {
+
jack_latency_range_t range;
+
+ p->get_connected_latency_range (range, playback);
+
+ all_connections.min = min (all_connections.min, range.min);
+ all_connections.max = max (all_connections.max, range.max);
+ }
+
+ all_connections.min += our_latency;
+ all_connections.max += our_latency;
- p->get_connected_latency_range (range, mode);
-
- /* add the latency created within this route
- */
-
- range.min += our_latency;
- range.max += our_latency;
+ for (PortSet::const_iterator p = operands.begin(); p != operands.end(); ++p) {
+
+ p->set_latency_range (all_connections, playback);
- p->set_latency_range (range, mode);
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("Port %1 %5 latency range %2 .. %3 + %4\n",
+ p->name(),
+ all_connections.min,
+ all_connections.max,
+ our_latency,
+ (playback ? "PLAYBACK" : "CAPTURE")));
}
#endif
}
BootMessage (_("Connect to engine"));
_engine.set_session (this);
+ _engine.update_total_latencies ();
}
void
Session::update_latency (bool playback)
{
DEBUG_TRACE (DEBUG::Latency, "JACK latency callback\n");
+
+ 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 */
+ reverse (r->begin(), r->end());
+ }
+
+ for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("------------- Working on latency for %1\n", (*i)->name()));
+ (*i)->set_latency_ranges (playback);
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("------------- Done working on latency for %1\n\n", (*i)->name()));
+ }
}
#endif