diff options
Diffstat (limited to 'libs/ardour/jack_api.cc')
-rw-r--r-- | libs/ardour/jack_api.cc | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/libs/ardour/jack_api.cc b/libs/ardour/jack_api.cc new file mode 100644 index 0000000000..fcfc499107 --- /dev/null +++ b/libs/ardour/jack_api.cc @@ -0,0 +1,102 @@ +/* + Copyright (C) 2013 Paul Davis + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include "ardour/jack_connection.h" +#include "ardour/jack_audiobackend.h" +#include "ardour/jack_portengine.h" + +using namespace ARDOUR; + +static boost::shared_ptr<JACKAudioBackend> backend; +static boost::shared_ptr<JACKPortEngine> port_engine; +static boost::shared_ptr<JackConnection> jack_connection; + +static boost::shared_ptr<AudioBackend> +backend_factory (AudioEngine& ae) +{ + if (!jack_connection) { + return boost::shared_ptr<AudioBackend>(); + } + + if (!backend) { + backend.reset (new JACKAudioBackend (ae, jack_connection)); + } + + return backend; +} + +static boost::shared_ptr<PortEngine> +portengine_factory (PortManager& pm) +{ + if (!jack_connection) { + return boost::shared_ptr<PortEngine>(); + } + + if (!port_engine) { + port_engine.reset (new JACKPortEngine (pm, jack_connection)); + } + + return port_engine; +} + +static int +instantiate (const std::string& arg1, const std::string& arg2) +{ + try { + jack_connection.reset (new JackConnection (arg1, arg2)); + } catch (...) { + return -1; + } + + return 0; +} + +static int +deinstantiate () +{ + port_engine.reset (); + backend.reset (); + jack_connection.reset (); + + return 0; +} + +static bool +already_configured () +{ + return JackConnection::server_running (); +} + +extern "C" { + + + /* functions looked up using dlopen-and-cousins, and so naming scope + * must be non-mangled. + */ + + ARDOUR::AudioBackendInfo descriptor = { + "JACK", + instantiate, + deinstantiate, + backend_factory, + portengine_factory, + already_configured, + }; +} + |