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diff --git a/libs/ardour/ardour/jack_audiobackend.h b/libs/ardour/ardour/jack_audiobackend.h
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+/*
+ 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.
+
+*/
+
+#ifndef __libardour_jack_audiobackend_h__
+#define __libardour_jack_audiobackend_h__
+
+#include <string>
+#include <vector>
+#include <map>
+#include <set>
+
+#include <stdint.h>
+
+#include <boost/shared_ptr.hpp>
+
+#include <jack/jack.h>
+#ifdef HAVE_JACK_SESSION
+#include <jack/session.h>
+#endif
+
+#include "ardour/audio_backend.h"
+
+namespace ARDOUR {
+
+class JackConnection;
+
+class JACKAudioBackend : public AudioBackend {
+ public:
+ JACKAudioBackend (AudioEngine& e, boost::shared_ptr<JackConnection>);
+ ~JACKAudioBackend ();
+
+ std::string name() const;
+ void* private_handle() const;
+ bool connected() const;
+ bool is_realtime () const;
+
+ bool requires_driver_selection() const;
+ std::vector<std::string> enumerate_drivers () const;
+ int set_driver (const std::string&);
+
+ std::vector<DeviceStatus> enumerate_devices () const;
+
+ std::vector<float> available_sample_rates (const std::string& device) const;
+ std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
+ uint32_t available_input_channel_count (const std::string& device) const;
+ uint32_t available_output_channel_count (const std::string& device) const;
+
+ int set_device_name (const std::string&);
+ int set_sample_rate (float);
+ int set_buffer_size (uint32_t);
+ int set_sample_format (SampleFormat);
+ int set_interleaved (bool yn);
+ int set_input_channels (uint32_t);
+ int set_output_channels (uint32_t);
+ int set_systemic_input_latency (uint32_t);
+ int set_systemic_output_latency (uint32_t);
+
+ std::string device_name () const;
+ float sample_rate () const;
+ uint32_t buffer_size () const;
+ SampleFormat sample_format () const;
+ bool interleaved () const;
+ uint32_t input_channels () const;
+ uint32_t output_channels () const;
+ uint32_t systemic_input_latency () const;
+ uint32_t systemic_output_latency () const;
+
+ int start ();
+ int stop ();
+ int pause ();
+ int freewheel (bool);
+
+ float cpu_load() const;
+
+ pframes_t sample_time ();
+ pframes_t sample_time_at_cycle_start ();
+ pframes_t samples_since_cycle_start ();
+
+ size_t raw_buffer_size (DataType t);
+
+ int create_process_thread (boost::function<void()> func, pthread_t*, size_t stacksize);
+
+ void transport_start ();
+ void transport_stop ();
+ void transport_locate (framepos_t /*pos*/);
+ TransportState transport_state () const;
+ framepos_t transport_frame() const;
+
+ int set_time_master (bool /*yn*/);
+ bool get_sync_offset (pframes_t& /*offset*/) const;
+
+ void update_latencies ();
+
+ static bool already_configured();
+
+ private:
+ boost::shared_ptr<JackConnection> _jack_connection; //< shared with JACKPortEngine
+ bool _running;
+ bool _freewheeling;
+ std::map<DataType,size_t> _raw_buffer_sizes;
+
+ static int _xrun_callback (void *arg);
+ static void* _process_thread (void *arg);
+ static int _sample_rate_callback (pframes_t nframes, void *arg);
+ static int _bufsize_callback (pframes_t nframes, void *arg);
+ static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
+ static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
+ static void _freewheel_callback (int , void *arg);
+ static void _latency_callback (jack_latency_callback_mode_t, void*);
+#ifdef HAVE_JACK_SESSION
+ static void _session_callback (jack_session_event_t *event, void *arg);
+#endif
+
+ void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
+ int jack_sync_callback (jack_transport_state_t, jack_position_t*);
+ int jack_bufsize_callback (pframes_t);
+ int jack_sample_rate_callback (pframes_t);
+ void freewheel_callback (int);
+ int process_callback (pframes_t nframes);
+ void jack_latency_callback (jack_latency_callback_mode_t);
+ void disconnected (const char*);
+
+ void set_jack_callbacks ();
+ int reconnect_to_jack ();
+
+ struct ThreadData {
+ JACKAudioBackend* engine;
+ boost::function<void()> f;
+ size_t stacksize;
+
+ ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
+ : engine (e) , f (fp) , stacksize (stacksz) {}
+ };
+
+ void* process_thread ();
+ static void* _start_process_thread (void*);
+
+ ChanCount n_physical (unsigned long) const;
+
+ void setup_jack_startup_command ();
+
+ /* pffooo */
+
+ std::string _target_driver;
+ std::string _target_device;
+ float _target_sample_rate;
+ uint32_t _target_buffer_size;
+ SampleFormat _target_sample_format;
+ bool _target_interleaved;
+ uint32_t _target_input_channels;
+ uint32_t _target_output_channels;
+ uint32_t _target_systemic_input_latency;
+ uint32_t _target_systemic_output_latency;
+ uint32_t _current_sample_rate;
+ uint32_t _current_buffer_size;
+
+ typedef std::set<std::string> DeviceList;
+ typedef std::map<std::string,DeviceList> DriverDeviceMap;
+
+ mutable DriverDeviceMap all_devices;
+
+ PBD::ScopedConnection disconnect_connection;
+};
+
+} // namespace
+
+#endif /* __ardour_audiobackend_h__ */
+