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"
24 #include <jack/weakjack.h> // so that we can test for new functions at runtime
26 #include "ardour/port.h"
27 #include "ardour/audioengine.h"
28 #include "pbd/failed_constructor.h"
29 #include "pbd/error.h"
30 #include "pbd/compose.h"
36 using namespace ARDOUR;
38 AudioEngine* Port::_engine = 0;
39 pframes_t Port::_buffer_size = 0;
40 bool Port::_connecting_blocked = false;
42 /** @param n Port short name */
43 Port::Port (std::string const & n, DataType t, Flags f)
44 : _last_monitor (false)
49 /* Unfortunately we have to pass the DataType into this constructor so that we can
50 create the right kind of JACK port; aside from this we'll use the virtual function type ()
54 assert (_name.find_first_of (':') == std::string::npos);
56 if (!_engine->connected()) {
57 throw failed_constructor ();
60 if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
61 cerr << "Failed to register JACK port, reason is unknown from here\n";
62 throw failed_constructor ();
66 /** Port destructor */
69 if (_engine->jack ()) {
70 jack_port_unregister (_engine->jack (), _jack_port);
74 /** @return true if this port is connected to anything */
76 Port::connected () const
78 return (jack_port_connected (_jack_port) != 0);
82 Port::disconnect_all ()
84 jack_port_disconnect (_engine->jack(), _jack_port);
85 _connections.clear ();
90 /** @param o Port name
91 * @return true if this port is connected to o, otherwise false.
94 Port::connected_to (std::string const & o) const
96 if (!_engine->connected()) {
97 /* in some senses, this answer isn't the right one all the time,
98 because we know about our connections and will re-establish
99 them when we reconnect to JACK.
104 return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ());
107 /** @param o Filled in with port full names of ports that we are connected to */
109 Port::get_connections (std::vector<std::string> & c) const
113 if (_engine->connected()) {
114 const char** jc = jack_port_get_connections (_jack_port);
116 for (int i = 0; jc[i]; ++i) {
129 Port::connect (std::string const & other)
131 std::string const other_shrt = _engine->make_port_name_non_relative (other);
132 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
136 if (_connecting_blocked) {
140 if (sends_output ()) {
141 r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
143 r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
147 _connections.insert (other);
154 Port::disconnect (std::string const & other)
156 std::string const other_shrt = _engine->make_port_name_non_relative (other);
157 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
161 if (sends_output ()) {
162 r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
164 r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
168 _connections.erase (other);
176 Port::connected_to (Port* o) const
178 return connected_to (o->name ());
182 Port::connect (Port* o)
184 return connect (o->name ());
188 Port::disconnect (Port* o)
190 return disconnect (o->name ());
194 Port::set_engine (AudioEngine* e)
200 Port::ensure_monitor_input (bool yn)
202 jack_port_ensure_monitor (_jack_port, yn);
206 Port::monitoring_input () const
208 return jack_port_monitoring_input (_jack_port);
214 _last_monitor = false;
222 Port::recompute_total_latency () const
224 #if !HAVE_JACK_NEW_LATENCY
225 #ifdef HAVE_JACK_RECOMPUTE_LATENCY
226 jack_client_t* jack = _engine->jack();
232 jack_recompute_total_latency (jack, _jack_port);
238 Port::set_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const
240 #if HAVE_JACK_NEW_LATENCY
241 if (!jack_port_set_latency_range) {
245 jack_port_set_latency_range (_jack_port, mode, &range);
250 Port::get_connected_latency_range (jack_latency_range_t& range, jack_latency_callback_mode_t mode) const
252 #if HAVE_JACK_NEW_LATENCY
253 if (!jack_port_get_latency_range) {
257 vector<string> connections;
258 jack_client_t* jack = _engine->jack();
263 PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg;
267 get_connections (connections);
269 if (!connections.empty()) {
271 range.min = ~((jack_nframes_t) 0);
274 for (vector<string>::iterator c = connections.begin(); c != connections.end(); ++c) {
275 jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
276 jack_latency_range_t lr;
279 jack_port_get_latency_range (remote_port, mode, &lr);
280 range.min = min (range.min, lr.min);
281 range.min = max (range.max, lr.max);
290 #endif /* HAVE_JACK_NEW_LATENCY */
294 Port::total_latency () const
296 #if !HAVE_JACK_NEW_LATENCY
297 jack_client_t* jack = _engine->jack();
303 return jack_port_get_total_latency (jack, _jack_port);
312 jack_client_t* jack = _engine->jack();
318 cerr << "RE-REGISTER: " << _name.c_str() << endl;
319 _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
321 if (_jack_port == 0) {
322 PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
335 /* caller must hold process lock; intended to be used only after reestablish() */
337 for (std::set<string>::iterator i = _connections.begin(); i != _connections.end(); ++i) {
346 /** @param n Short port name (no JACK client name) */
348 Port::set_name (std::string const & n)
354 int const r = jack_port_set_name (_jack_port, n.c_str());
364 Port::request_monitor_input (bool yn)
366 jack_port_request_monitor (_jack_port, yn);
370 Port::set_latency (framecnt_t n)
372 #if !HAVE_JACK_NEW_LATENCY
373 jack_port_set_latency (_jack_port, n);
378 Port::physically_connected () const
380 const char** jc = jack_port_get_connections (_jack_port);
383 for (int i = 0; jc[i]; ++i) {
385 jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
387 if (port && (jack_port_flags (port) & JackPortIsPhysical)) {