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 bool Port::_connecting_blocked = false;
44 pframes_t Port::_global_port_buffer_offset = 0;
45 pframes_t Port::_cycle_nframes = 0;
47 /** @param n Port short name */
48 Port::Port (std::string const & n, DataType t, Flags f)
49 : _port_buffer_offset (0)
52 , _last_monitor (false)
55 /* Unfortunately we have to pass the DataType into this constructor so that we can
56 create the right kind of JACK port; aside from this we'll use the virtual function type ()
60 assert (_name.find_first_of (':') == std::string::npos);
62 if (!_engine->connected()) {
63 throw failed_constructor ();
66 if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
67 cerr << "Failed to register JACK port, reason is unknown from here\n";
68 throw failed_constructor ();
72 /** Port destructor */
75 if (_engine->jack ()) {
76 jack_port_unregister (_engine->jack (), _jack_port);
80 /** @return true if this port is connected to anything */
82 Port::connected () const
84 return (jack_port_connected (_jack_port) != 0);
88 Port::disconnect_all ()
90 jack_port_disconnect (_engine->jack(), _jack_port);
91 _connections.clear ();
96 /** @param o Port name
97 * @return true if this port is connected to o, otherwise false.
100 Port::connected_to (std::string const & o) const
102 if (!_engine->connected()) {
103 /* in some senses, this answer isn't the right one all the time,
104 because we know about our connections and will re-establish
105 them when we reconnect to JACK.
110 return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ());
113 /** @param o Filled in with port full names of ports that we are connected to */
115 Port::get_connections (std::vector<std::string> & c) const
119 if (_engine->connected()) {
120 const char** jc = jack_port_get_connections (_jack_port);
122 for (int i = 0; jc[i]; ++i) {
135 Port::connect (std::string const & other)
137 std::string const other_shrt = _engine->make_port_name_non_relative (other);
138 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
142 if (_connecting_blocked) {
146 if (sends_output ()) {
147 r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
149 r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
153 _connections.insert (other);
160 Port::disconnect (std::string const & other)
162 std::string const other_shrt = _engine->make_port_name_non_relative (other);
163 std::string const this_shrt = _engine->make_port_name_non_relative (_name);
167 if (sends_output ()) {
168 r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
170 r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
174 _connections.erase (other);
182 Port::connected_to (Port* o) const
184 return connected_to (o->name ());
188 Port::connect (Port* o)
190 return connect (o->name ());
194 Port::disconnect (Port* o)
196 return disconnect (o->name ());
200 Port::set_engine (AudioEngine* e)
206 Port::ensure_monitor_input (bool yn)
208 jack_port_ensure_monitor (_jack_port, yn);
212 Port::monitoring_input () const
214 return jack_port_monitoring_input (_jack_port);
220 _last_monitor = false;
224 Port::cycle_start (pframes_t nframes)
226 _port_buffer_offset = 0;
230 Port::increment_port_buffer_offset (pframes_t nframes)
232 _port_buffer_offset += nframes;
236 Port::set_public_latency_range (jack_latency_range_t& range, bool playback) const
238 /* this sets the visible latency that the rest of JACK sees. because we do latency
239 compensation, all (most) of our visible port latency values are identical.
242 if (!jack_port_set_latency_range) {
246 DEBUG_TRACE (DEBUG::Latency, string_compose ("PORT %1 %4 latency now [%2 - %3]\n", name(),
249 (playback ? "PLAYBACK" : "CAPTURE")));;
251 jack_port_set_latency_range (_jack_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &range);
255 Port::set_private_latency_range (jack_latency_range_t& range, bool playback)
258 _private_playback_latency = range;
259 DEBUG_TRACE (DEBUG::Latency, string_compose ("PORT %1 playback latency now [%2 - %3]\n", name(),
260 _private_playback_latency.min,
261 _private_playback_latency.max));
263 _private_capture_latency = range;
264 DEBUG_TRACE (DEBUG::Latency, string_compose ("PORT %1 capture latency now [%2 - %3]\n", name(),
265 _private_playback_latency.min,
266 _private_playback_latency.max));
269 /* push to public (JACK) location so that everyone else can see it */
271 set_public_latency_range (range, playback);
274 const jack_latency_range_t&
275 Port::private_latency_range (bool playback) const
278 return _private_playback_latency;
280 return _private_capture_latency;
285 Port::public_latency_range (bool playback) const
287 jack_latency_range_t r;
289 jack_port_get_latency_range (_jack_port,
290 sends_output() ? JackPlaybackLatency : JackCaptureLatency,
292 DEBUG_TRACE (DEBUG::Latency, string_compose ("PORT %1: %4 public latency range %2 .. %3\n",
293 name(), r.min, r.max,
294 sends_output() ? "PLAYBACK" : "CAPTURE"));
299 Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const
301 if (!jack_port_get_latency_range) {
305 vector<string> connections;
306 jack_client_t* jack = _engine->jack();
311 PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg;
315 get_connections (connections);
317 if (!connections.empty()) {
319 range.min = ~((jack_nframes_t) 0);
322 for (vector<string>::iterator c = connections.begin(); c != connections.end(); ++c) {
323 jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
324 jack_latency_range_t lr;
327 jack_port_get_latency_range (remote_port, (playback ? JackPlaybackLatency : JackCaptureLatency), &lr);
328 DEBUG_TRACE (DEBUG::Latency, string_compose ("\t\%1 has latency range %2 .. %3\n", *c, lr.min, lr.max));
329 range.min = min (range.min, lr.min);
330 range.max = max (range.max, lr.max);
344 jack_client_t* jack = _engine->jack();
350 _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
352 if (_jack_port == 0) {
353 PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
366 /* caller must hold process lock; intended to be used only after reestablish() */
368 for (std::set<string>::iterator i = _connections.begin(); i != _connections.end(); ++i) {
377 /** @param n Short port name (no JACK client name) */
379 Port::set_name (std::string const & n)
385 int const r = jack_port_set_name (_jack_port, n.c_str());
395 Port::request_monitor_input (bool yn)
397 jack_port_request_monitor (_jack_port, yn);
401 Port::physically_connected () const
403 const char** jc = jack_port_get_connections (_jack_port);
406 for (int i = 0; jc[i]; ++i) {
408 jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
410 if (port && (jack_port_flags (port) & JackPortIsPhysical)) {