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.
20 #ifndef __libardour_jack_audiobackend_h__
21 #define __libardour_jack_audiobackend_h__
30 #include <boost/shared_ptr.hpp>
32 #include <jack/jack.h>
33 #ifdef HAVE_JACK_SESSION
34 #include <jack/session.h>
37 #include "ardour/audio_backend.h"
43 class JACKAudioBackend : public AudioBackend {
45 JACKAudioBackend (AudioEngine& e, boost::shared_ptr<JackConnection>);
48 std::string name() const;
49 void* private_handle() const;
50 bool connected() const;
51 bool is_realtime () const;
53 bool requires_driver_selection() const;
54 std::vector<std::string> enumerate_drivers () const;
55 int set_driver (const std::string&);
57 std::vector<DeviceStatus> enumerate_devices () const;
59 std::vector<float> available_sample_rates (const std::string& device) const;
60 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
61 uint32_t available_input_channel_count (const std::string& device) const;
62 uint32_t available_output_channel_count (const std::string& device) const;
64 bool can_change_sample_rate_when_running() const;
65 bool can_change_buffer_size_when_running() const;
67 int set_device_name (const std::string&);
68 int set_sample_rate (float);
69 int set_buffer_size (uint32_t);
70 int set_sample_format (SampleFormat);
71 int set_interleaved (bool yn);
72 int set_input_channels (uint32_t);
73 int set_output_channels (uint32_t);
74 int set_systemic_input_latency (uint32_t);
75 int set_systemic_output_latency (uint32_t);
77 std::string device_name () const;
78 float sample_rate () const;
79 uint32_t buffer_size () const;
80 SampleFormat sample_format () const;
81 bool interleaved () const;
82 uint32_t input_channels () const;
83 uint32_t output_channels () const;
84 uint32_t systemic_input_latency () const;
85 uint32_t systemic_output_latency () const;
87 std::string control_app_name () const;
88 void launch_control_app ();
95 float cpu_load() const;
97 pframes_t sample_time ();
98 pframes_t sample_time_at_cycle_start ();
99 pframes_t samples_since_cycle_start ();
101 size_t raw_buffer_size (DataType t);
103 int create_process_thread (boost::function<void()> func, AudioBackendNativeThread*, size_t stacksize);
104 int wait_for_process_thread_exit (AudioBackendNativeThread);
106 void transport_start ();
107 void transport_stop ();
108 void transport_locate (framepos_t /*pos*/);
109 TransportState transport_state () const;
110 framepos_t transport_frame() const;
112 int set_time_master (bool /*yn*/);
113 bool get_sync_offset (pframes_t& /*offset*/) const;
115 void update_latencies ();
117 static bool already_configured();
120 boost::shared_ptr<JackConnection> _jack_connection; //< shared with JACKPortEngine
123 std::map<DataType,size_t> _raw_buffer_sizes;
125 static int _xrun_callback (void *arg);
126 static void* _process_thread (void *arg);
127 static int _sample_rate_callback (pframes_t nframes, void *arg);
128 static int _bufsize_callback (pframes_t nframes, void *arg);
129 static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
130 static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
131 static void _freewheel_callback (int , void *arg);
132 static void _latency_callback (jack_latency_callback_mode_t, void*);
133 #ifdef HAVE_JACK_SESSION
134 static void _session_callback (jack_session_event_t *event, void *arg);
137 void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
138 int jack_sync_callback (jack_transport_state_t, jack_position_t*);
139 int jack_bufsize_callback (pframes_t);
140 int jack_sample_rate_callback (pframes_t);
141 void freewheel_callback (int);
142 int process_callback (pframes_t nframes);
143 void jack_latency_callback (jack_latency_callback_mode_t);
144 void disconnected (const char*);
146 void set_jack_callbacks ();
147 int reconnect_to_jack ();
150 JACKAudioBackend* engine;
151 boost::function<void()> f;
154 ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
155 : engine (e) , f (fp) , stacksize (stacksz) {}
158 void* process_thread ();
159 static void* _start_process_thread (void*);
161 ChanCount n_physical (unsigned long) const;
163 void setup_jack_startup_command ();
167 std::string _target_driver;
168 std::string _target_device;
169 float _target_sample_rate;
170 uint32_t _target_buffer_size;
171 SampleFormat _target_sample_format;
172 bool _target_interleaved;
173 uint32_t _target_input_channels;
174 uint32_t _target_output_channels;
175 uint32_t _target_systemic_input_latency;
176 uint32_t _target_systemic_output_latency;
177 uint32_t _current_sample_rate;
178 uint32_t _current_buffer_size;
180 typedef std::set<std::string> DeviceList;
181 typedef std::map<std::string,DeviceList> DriverDeviceMap;
183 mutable DriverDeviceMap all_devices;
185 PBD::ScopedConnection disconnect_connection;
190 #endif /* __ardour_audiobackend_h__ */