165 lines
4.2 KiB
C++
165 lines
4.2 KiB
C++
/*
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Copyright (C) 2013 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <boost/scoped_ptr.hpp>
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#include <jack/session.h>
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#include "pbd/epa.h"
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#include "jack_connection.h"
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#include "jack_utils.h"
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#define GET_PRIVATE_JACK_POINTER(j) jack_client_t* _priv_jack = (jack_client_t*) (j); if (!_priv_jack) { return; }
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#define GET_PRIVATE_JACK_POINTER_RET(j,r) jack_client_t* _priv_jack = (jack_client_t*) (j); if (!_priv_jack) { return r; }
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using namespace ARDOUR;
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using namespace PBD;
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using std::string;
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using std::vector;
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static void jack_halted_callback (void* arg)
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{
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JackConnection* jc = static_cast<JackConnection*> (arg);
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jc->halted_callback ();
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}
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static void jack_halted_info_callback (jack_status_t code, const char* reason, void* arg)
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{
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JackConnection* jc = static_cast<JackConnection*> (arg);
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jc->halted_info_callback (code, reason);
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}
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JackConnection::JackConnection (const std::string& arg1, const std::string& arg2)
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: _jack (0)
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, _client_name (arg1)
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, session_uuid (arg2)
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{
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}
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JackConnection::~JackConnection ()
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{
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close ();
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}
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bool
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JackConnection::server_running ()
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{
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EnvironmentalProtectionAgency* global_epa = EnvironmentalProtectionAgency::get_global_epa ();
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boost::scoped_ptr<EnvironmentalProtectionAgency> current_epa;
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/* revert all environment settings back to whatever they were when
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* ardour started, because ardour's startup script may have reset
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* something in ways that interfere with finding/starting JACK.
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*/
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if (global_epa) {
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current_epa.reset (new EnvironmentalProtectionAgency(true)); /* will restore settings when we leave scope */
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global_epa->restore ();
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}
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jack_status_t status;
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jack_client_t* c = jack_client_open ("ardourprobe", JackNoStartServer, &status);
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if (status == 0) {
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jack_client_close (c);
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return true;
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}
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return false;
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}
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int
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JackConnection::open ()
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{
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EnvironmentalProtectionAgency* global_epa = EnvironmentalProtectionAgency::get_global_epa ();
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boost::scoped_ptr<EnvironmentalProtectionAgency> current_epa;
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jack_status_t status;
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close ();
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/* revert all environment settings back to whatever they were when ardour started
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*/
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if (global_epa) {
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current_epa.reset (new EnvironmentalProtectionAgency(true)); /* will restore settings when we leave scope */
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global_epa->restore ();
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}
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/* ensure that PATH or equivalent includes likely locations of the JACK
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* server, in case the user's default does not.
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*/
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vector<string> dirs;
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get_jack_server_dir_paths (dirs);
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set_path_env_for_jack_autostart (dirs);
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if ((_jack = jack_client_open (_client_name.c_str(), JackSessionID, &status, session_uuid.c_str())) == 0) {
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return -1;
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}
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if (status & JackNameNotUnique) {
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_client_name = jack_get_client_name (_jack);
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}
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/* attach halted handler */
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if (jack_on_info_shutdown) {
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jack_on_info_shutdown (_jack, jack_halted_info_callback, this);
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} else {
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jack_on_shutdown (_jack, jack_halted_callback, this);
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}
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Connected(); /* EMIT SIGNAL */
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return 0;
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}
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int
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JackConnection::close ()
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{
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GET_PRIVATE_JACK_POINTER_RET (_jack, -1);
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if (_priv_jack) {
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int ret = jack_client_close (_priv_jack);
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_jack = 0;
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Disconnected (""); /* EMIT SIGNAL */
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return ret;
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}
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return 0;
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}
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void
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JackConnection::halted_callback ()
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{
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_jack = 0;
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Disconnected ("");
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}
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void
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JackConnection::halted_info_callback (jack_status_t /*status*/, const char* reason)
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{
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_jack = 0;
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Disconnected (reason);
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}
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