13
0
livetrax/libs/backends/jack/jack_api.cc

92 lines
2.1 KiB
C++
Raw Normal View History

2013-08-03 16:44:13 -04:00
/*
* Copyright (C) 2013-2015 Paul Davis <paul@linuxaudiosystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
2013-08-03 16:44:13 -04:00
#include "jack_connection.h"
#include "jack_audiobackend.h"
2013-08-03 16:44:13 -04:00
using namespace ARDOUR;
static std::shared_ptr<JACKAudioBackend> backend;
static std::shared_ptr<JackConnection> jack_connection;
2013-08-03 16:44:13 -04:00
static std::shared_ptr<AudioBackend> backend_factory (AudioEngine& ae);
static int instantiate (const std::string& arg1, const std::string& arg2);
static int deinstantiate ();
static bool already_configured ();
static bool available ();
static ARDOUR::AudioBackendInfo _descriptor = {
"JACK",
instantiate,
deinstantiate,
backend_factory,
already_configured,
available
};
static std::shared_ptr<AudioBackend>
2013-08-03 16:44:13 -04:00
backend_factory (AudioEngine& ae)
{
if (!jack_connection) {
return std::shared_ptr<AudioBackend>();
2013-08-03 16:44:13 -04:00
}
if (!backend) {
backend.reset (new JACKAudioBackend (ae, _descriptor, jack_connection));
2013-08-03 16:44:13 -04:00
}
return backend;
}
static int
instantiate (const std::string& arg1, const std::string& arg2)
{
try {
jack_connection.reset (new JackConnection (arg1, arg2));
backend.reset ();
2013-08-03 16:44:13 -04:00
} catch (...) {
return -1;
}
return 0;
}
static int
2013-08-03 16:44:13 -04:00
deinstantiate ()
{
backend.reset ();
jack_connection.reset ();
return 0;
}
static bool
already_configured ()
{
return !JackConnection::in_control ();
2013-08-03 16:44:13 -04:00
}
static bool
available ()
{
return have_libjack() ? false : true;
}
extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor() { return &_descriptor; }
2013-08-03 16:44:13 -04:00