2 Copyright (C) 2013 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 <boost/scoped_ptr.hpp>
23 #include <glibmm/timer.h>
27 #include "jack_connection.h"
28 #include "jack_utils.h"
30 #define GET_PRIVATE_JACK_POINTER(j) jack_client_t* _priv_jack = (jack_client_t*) (j); if (!_priv_jack) { return; }
31 #define GET_PRIVATE_JACK_POINTER_RET(j,r) jack_client_t* _priv_jack = (jack_client_t*) (j); if (!_priv_jack) { return r; }
33 using namespace ARDOUR;
40 bool JackConnection::_in_control = false;
42 static void jack_halted_callback (void* arg)
44 JackConnection* jc = static_cast<JackConnection*> (arg);
45 jc->halted_callback ();
48 static void jack_halted_info_callback (jack_status_t code, const char* reason, void* arg)
50 JackConnection* jc = static_cast<JackConnection*> (arg);
51 jc->halted_info_callback (code, reason);
55 JackConnection::JackConnection (const std::string& arg1, const std::string& arg2)
59 , _probed_buffer_size (0)
60 , _probed_sample_rate (0)
62 /* See if the server is already up
65 EnvironmentalProtectionAgency* global_epa = EnvironmentalProtectionAgency::get_global_epa ();
66 boost::scoped_ptr<EnvironmentalProtectionAgency> current_epa;
68 /* revert all environment settings back to whatever they were when
69 * ardour started, because ardour's startup script may have reset
70 * something in ways that interfere with finding/starting JACK.
74 current_epa.reset (new EnvironmentalProtectionAgency(true)); /* will restore settings when we leave scope */
75 global_epa->restore ();
79 jack_client_t* c = jack_client_open ("ardourprobe", JackNoStartServer, &status);
82 _probed_buffer_size = jack_get_buffer_size(c);
83 _probed_sample_rate = jack_get_sample_rate(c);
84 jack_client_close (c);
91 JackConnection::~JackConnection ()
97 JackConnection::open ()
99 EnvironmentalProtectionAgency* global_epa = EnvironmentalProtectionAgency::get_global_epa ();
100 boost::scoped_ptr<EnvironmentalProtectionAgency> current_epa;
101 jack_status_t status;
105 /* revert all environment settings back to whatever they were when ardour started
109 current_epa.reset (new EnvironmentalProtectionAgency(true)); /* will restore settings when we leave scope */
110 global_epa->restore ();
113 /* ensure that PATH or equivalent includes likely locations of the JACK
114 * server, in case the user's default does not.
118 get_jack_server_dir_paths (dirs);
119 set_path_env_for_jack_autostart (dirs);
121 if ((_jack = jack_client_open (_client_name.c_str(), JackSessionID, &status, session_uuid.c_str())) == 0) {
125 if (status & JackNameNotUnique) {
126 _client_name = jack_get_client_name (_jack);
129 /* attach halted handler */
131 if (jack_on_info_shutdown) {
132 jack_on_info_shutdown (_jack, jack_halted_info_callback, this);
134 jack_on_shutdown (_jack, jack_halted_callback, this);
138 Connected(); /* EMIT SIGNAL */
144 JackConnection::close ()
146 GET_PRIVATE_JACK_POINTER_RET (_jack, -1);
149 int ret = jack_client_close (_priv_jack);
152 /* If we started JACK, it will be closing down */
153 Glib::usleep (500000);
155 Disconnected (""); /* EMIT SIGNAL */
164 JackConnection::halted_callback ()
167 std::cerr << "JACK HALTED\n";
172 JackConnection::halted_info_callback (jack_status_t /*status*/, const char* reason)
175 std::cerr << "JACK HALTED: " << reason << std::endl;
176 Disconnected (reason);