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;
45 framecnt_t Port::_port_offset = 0;
47 /** @param n Port short name */
48 Port::Port (std::string const & n, DataType t, Flags f)
49 : _last_monitor (false)
54 /* Unfortunately we have to pass the DataType into this constructor so that we can
55 create the right kind of JACK port; aside from this we'll use the virtual function type ()
59 assert (_name.find_first_of (':') == std::string::npos);
61 if (!_engine->connected()) {
62 throw failed_constructor ();
65 if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
66 cerr << "Failed to register JACK port, reason is unknown from here\n";
67 throw failed_constructor ();
71 /** Port destructor */
74 if (_engine->jack ()) {
75 jack_port_unregister (_engine->jack (), _jack_port);
79 /** @return true if this port is connected to anything */
81 Port::connected () const
83 return (jack_port_connected (_jack_port) != 0);
87 Port::disconnect_all ()
89 jack_port_disconnect (_engine->jack(), _jack_port);
90 _connections.clear ();
95 /** @param o Port name
96 * @return true if this port is connected to o, otherwise false.
99 Port::connected_to (std::string const & o) const
101 if (!_engine->connected()) {
102 /* in some senses, this answer isn't the right one all the time,
103 because we know about our connections and will re-establish
104 them when we reconnect to JACK.
109 return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ());
112 /** @param o Filled in with port full names of ports that we are connected to */
114 Port::get_connections (std::vector<std::string> & c) const
118 if (_engine->connected()) {
119 const char** jc = jack_port_get_connections (_jack_port);
121 for (int i = 0; jc[i]; ++i) {
134 Port::connect (std::string const & other)
136 std::string const other_shrt = _engine->make_port_name_non_relative (other);
137 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
141 if (_connecting_blocked) {
145 if (sends_output ()) {
146 r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
148 r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
152 _connections.insert (other);
159 Port::disconnect (std::string const & other)
161 std::string const other_shrt = _engine->make_port_name_non_relative (other);
162 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
166 if (sends_output ()) {
167 r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
169 r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
173 _connections.erase (other);
181 Port::connected_to (Port* o) const
183 return connected_to (o->name ());
187 Port::connect (Port* o)
189 return connect (o->name ());
193 Port::disconnect (Port* o)
195 return disconnect (o->name ());
199 Port::set_engine (AudioEngine* e)
205 Port::ensure_monitor_input (bool yn)
207 jack_port_ensure_monitor (_jack_port, yn);
211 Port::monitoring_input () const
213 return jack_port_monitoring_input (_jack_port);
219 _last_monitor = false;
227 Port::recompute_total_latency () const
229 #ifndef HAVE_JACK_NEW_LATENCY
230 #ifdef HAVE_JACK_RECOMPUTE_LATENCY
231 jack_client_t* jack = _engine->jack();
237 jack_recompute_total_latency (jack, _jack_port);
242 #ifdef HAVE_JACK_NEW_LATENCY
244 Port::set_latency_range (jack_latency_range_t& range, bool playback) const
246 if (!jack_port_set_latency_range) {
250 jack_port_set_latency_range (_jack_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &range);
254 #ifdef HAVE_JACK_NEW_LATENCY
256 Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const
258 if (!jack_port_get_latency_range) {
262 vector<string> connections;
263 jack_client_t* jack = _engine->jack();
268 PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg;
272 get_connections (connections);
274 if (!connections.empty()) {
276 range.min = ~((jack_nframes_t) 0);
279 for (vector<string>::iterator c = connections.begin(); c != connections.end(); ++c) {
280 jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
281 jack_latency_range_t lr;
283 DEBUG_TRACE (DEBUG::Latency, string_compose ("\t%1 connected to %2\n", name(), *c));
286 jack_port_get_latency_range (remote_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &lr);
287 DEBUG_TRACE (DEBUG::Latency, string_compose ("\t\tremote has latency range %1 .. %2\n", lr.min, lr.max));
288 range.min = min (range.min, lr.min);
289 range.max = max (range.max, lr.max);
299 #endif /* HAVE_JACK_NEW_LATENCY */
302 Port::total_latency () const
304 #ifndef HAVE_JACK_NEW_LATENCY
305 jack_client_t* jack = _engine->jack();
311 return jack_port_get_total_latency (jack, _jack_port);
313 jack_latency_range_t r;
314 jack_port_get_latency_range (_jack_port,
315 sends_output() ? JackPlaybackLatency : JackCaptureLatency,
317 DEBUG_TRACE (DEBUG::Latency, string_compose ("PORT %1: latency range %2 .. %3\n",
318 name(), r.min, r.max));
326 jack_client_t* jack = _engine->jack();
332 cerr << "RE-REGISTER: " << _name.c_str() << endl;
333 _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
335 if (_jack_port == 0) {
336 PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
349 /* caller must hold process lock; intended to be used only after reestablish() */
351 for (std::set<string>::iterator i = _connections.begin(); i != _connections.end(); ++i) {
360 /** @param n Short port name (no JACK client name) */
362 Port::set_name (std::string const & n)
368 int const r = jack_port_set_name (_jack_port, n.c_str());
378 Port::request_monitor_input (bool yn)
380 jack_port_request_monitor (_jack_port, yn);
384 Port::set_latency (framecnt_t n)
386 #ifndef HAVE_JACK_NEW_LATENCY
387 jack_port_set_latency (_jack_port, n);
392 Port::physically_connected () const
394 const char** jc = jack_port_get_connections (_jack_port);
397 for (int i = 0; jc[i]; ++i) {
399 jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
401 if (port && (jack_port_flags (port) & JackPortIsPhysical)) {