2 Copyright (C) 2009 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "libardour-config.h"
26 #include <jack/weakjack.h> // so that we can test for new functions at runtime
28 #include "pbd/error.h"
29 #include "pbd/compose.h"
31 #include "ardour/debug.h"
32 #include "ardour/port.h"
33 #include "ardour/audioengine.h"
34 #include "pbd/failed_constructor.h"
39 using namespace ARDOUR;
42 AudioEngine* Port::_engine = 0;
43 pframes_t Port::_buffer_size = 0;
44 bool Port::_connecting_blocked = false;
46 /** @param n Port short name */
47 Port::Port (std::string const & n, DataType t, Flags f)
48 : _last_monitor (false)
53 /* Unfortunately we have to pass the DataType into this constructor so that we can
54 create the right kind of JACK port; aside from this we'll use the virtual function type ()
58 assert (_name.find_first_of (':') == std::string::npos);
60 if (!_engine->connected()) {
61 throw failed_constructor ();
64 if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
65 cerr << "Failed to register JACK port, reason is unknown from here\n";
66 throw failed_constructor ();
70 /** Port destructor */
73 if (_engine->jack ()) {
74 jack_port_unregister (_engine->jack (), _jack_port);
78 /** @return true if this port is connected to anything */
80 Port::connected () const
82 return (jack_port_connected (_jack_port) != 0);
86 Port::disconnect_all ()
88 jack_port_disconnect (_engine->jack(), _jack_port);
89 _connections.clear ();
94 /** @param o Port name
95 * @return true if this port is connected to o, otherwise false.
98 Port::connected_to (std::string const & o) const
100 if (!_engine->connected()) {
101 /* in some senses, this answer isn't the right one all the time,
102 because we know about our connections and will re-establish
103 them when we reconnect to JACK.
108 return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ());
111 /** @param o Filled in with port full names of ports that we are connected to */
113 Port::get_connections (std::vector<std::string> & c) const
117 if (_engine->connected()) {
118 const char** jc = jack_port_get_connections (_jack_port);
120 for (int i = 0; jc[i]; ++i) {
133 Port::connect (std::string const & other)
135 std::string const other_shrt = _engine->make_port_name_non_relative (other);
136 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
140 if (_connecting_blocked) {
144 if (sends_output ()) {
145 r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
147 r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
151 _connections.insert (other);
158 Port::disconnect (std::string const & other)
160 std::string const other_shrt = _engine->make_port_name_non_relative (other);
161 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
165 if (sends_output ()) {
166 r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
168 r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
172 _connections.erase (other);
180 Port::connected_to (Port* o) const
182 return connected_to (o->name ());
186 Port::connect (Port* o)
188 return connect (o->name ());
192 Port::disconnect (Port* o)
194 return disconnect (o->name ());
198 Port::set_engine (AudioEngine* e)
204 Port::ensure_monitor_input (bool yn)
206 jack_port_ensure_monitor (_jack_port, yn);
210 Port::monitoring_input () const
212 return jack_port_monitoring_input (_jack_port);
218 _last_monitor = false;
226 Port::recompute_total_latency () const
228 #ifndef HAVE_JACK_NEW_LATENCY
229 #ifdef HAVE_JACK_RECOMPUTE_LATENCY
230 jack_client_t* jack = _engine->jack();
236 jack_recompute_total_latency (jack, _jack_port);
242 Port::set_latency_range (jack_latency_range_t& range, bool playback) const
244 #ifdef HAVE_JACK_NEW_LATENCY
245 if (!jack_port_set_latency_range) {
249 jack_port_set_latency_range (_jack_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &range);
254 Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const
256 #ifdef HAVE_JACK_NEW_LATENCY
257 if (!jack_port_get_latency_range) {
261 vector<string> connections;
262 jack_client_t* jack = _engine->jack();
267 PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg;
271 get_connections (connections);
273 if (!connections.empty()) {
275 range.min = ~((jack_nframes_t) 0);
278 for (vector<string>::iterator c = connections.begin(); c != connections.end(); ++c) {
279 jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
280 jack_latency_range_t lr;
282 DEBUG_TRACE (DEBUG::Latency, string_compose ("\t%1 connected to %2\n", name(), *c));
285 jack_port_get_latency_range (remote_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &lr);
286 DEBUG_TRACE (DEBUG::Latency, string_compose ("\t\tremote has latency range %1 .. %2\n", lr.min, lr.max));
287 range.min = min (range.min, lr.min);
288 range.max = max (range.max, lr.max);
297 #endif /* HAVE_JACK_NEW_LATENCY */
301 Port::total_latency () const
303 #ifndef HAVE_JACK_NEW_LATENCY
304 jack_client_t* jack = _engine->jack();
310 return jack_port_get_total_latency (jack, _jack_port);
319 jack_client_t* jack = _engine->jack();
325 cerr << "RE-REGISTER: " << _name.c_str() << endl;
326 _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
328 if (_jack_port == 0) {
329 PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
342 /* caller must hold process lock; intended to be used only after reestablish() */
344 for (std::set<string>::iterator i = _connections.begin(); i != _connections.end(); ++i) {
353 /** @param n Short port name (no JACK client name) */
355 Port::set_name (std::string const & n)
361 int const r = jack_port_set_name (_jack_port, n.c_str());
371 Port::request_monitor_input (bool yn)
373 jack_port_request_monitor (_jack_port, yn);
377 Port::set_latency (framecnt_t n)
379 #ifndef HAVE_JACK_NEW_LATENCY
380 jack_port_set_latency (_jack_port, n);
385 Port::physically_connected () const
387 const char** jc = jack_port_get_connections (_jack_port);
390 for (int i = 0; jc[i]; ++i) {
392 jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
394 if (port && (jack_port_flags (port) & JackPortIsPhysical)) {