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 #include <jack/session.h>
35 #include "ardour/audio_backend.h"
42 class JACKAudioBackend : public AudioBackend {
44 JACKAudioBackend (AudioEngine& e, AudioBackendInfo& info, boost::shared_ptr<JackConnection>);
47 /* AUDIOBACKEND API */
49 std::string name() const;
50 void* private_handle() const;
51 bool available() const;
52 bool is_realtime () const;
54 bool requires_driver_selection() const;
55 std::vector<std::string> enumerate_drivers () const;
56 int set_driver (const std::string&);
58 std::vector<DeviceStatus> enumerate_devices () const;
60 std::vector<float> available_sample_rates (const std::string& device) const;
61 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
62 uint32_t available_input_channel_count (const std::string& device) const;
63 uint32_t available_output_channel_count (const std::string& device) const;
65 bool can_change_sample_rate_when_running() const;
66 bool can_change_buffer_size_when_running() const;
68 int set_device_name (const std::string&);
69 int set_sample_rate (float);
70 int set_buffer_size (uint32_t);
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);
76 int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; }
77 int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
81 std::string device_name () const;
82 float sample_rate () const;
83 uint32_t buffer_size () const;
84 bool interleaved () const;
85 uint32_t input_channels () const;
86 uint32_t output_channels () const;
87 uint32_t systemic_input_latency () const;
88 uint32_t systemic_output_latency () const;
89 uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
90 uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
91 std::string driver_name() const;
93 std::string control_app_name () const;
94 void launch_control_app ();
99 float dsp_load() const;
101 pframes_t sample_time ();
102 pframes_t sample_time_at_cycle_start ();
103 pframes_t samples_since_cycle_start ();
105 size_t raw_buffer_size (DataType t);
107 int create_process_thread (boost::function<void()> func);
108 int join_process_threads ();
109 bool in_process_thread ();
110 uint32_t process_thread_count ();
112 void transport_start ();
113 void transport_stop ();
114 void transport_locate (framepos_t /*pos*/);
115 TransportState transport_state () const;
116 framepos_t transport_frame() const;
118 int set_time_master (bool /*yn*/);
119 bool get_sync_offset (pframes_t& /*offset*/) const;
121 void update_latencies ();
123 static bool already_configured();
127 const std::string& my_name() const;
128 uint32_t port_name_size() const;
130 int set_port_name (PortHandle, const std::string&);
131 std::string get_port_name (PortHandle) const;
132 PortHandle get_port_by_name (const std::string&) const;
134 int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
136 DataType port_data_type (PortHandle) const;
138 PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
139 void unregister_port (PortHandle);
141 bool connected (PortHandle, bool process_callback_safe);
142 bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
143 bool physically_connected (PortHandle, bool process_callback_safe);
144 int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
145 int connect (PortHandle, const std::string&);
147 int disconnect (PortHandle, const std::string&);
148 int disconnect_all (PortHandle);
149 int connect (const std::string& src, const std::string& dst);
150 int disconnect (const std::string& src, const std::string& dst);
154 std::vector<std::string> enumerate_midi_options () const;
155 int set_midi_option (const std::string&);
156 std::string midi_option () const;
158 std::vector<DeviceStatus> enumerate_midi_devices () const {
159 return std::vector<AudioBackend::DeviceStatus> ();
161 int set_midi_device_enabled (std::string const, bool) {
164 bool midi_device_enabled (std::string const) const {
167 bool can_set_systemic_midi_latencies () const {
171 int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index);
172 int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
173 uint32_t get_midi_event_count (void* port_buffer);
174 void midi_clear (void* port_buffer);
178 bool can_monitor_input() const;
179 int request_input_monitoring (PortHandle, bool);
180 int ensure_input_monitoring (PortHandle, bool);
181 bool monitoring_input (PortHandle);
183 /* Latency management
186 void set_latency_range (PortHandle, bool for_playback, LatencyRange);
187 LatencyRange get_latency_range (PortHandle, bool for_playback);
191 bool port_is_physical (PortHandle) const;
192 void get_physical_outputs (DataType type, std::vector<std::string>&);
193 void get_physical_inputs (DataType type, std::vector<std::string>&);
194 ChanCount n_physical_outputs () const;
195 ChanCount n_physical_inputs () const;
197 /* Getting access to the data buffer for a port */
199 void* get_buffer (PortHandle, pframes_t);
203 bool speed_and_position (double& sp, framepos_t& pos);
206 boost::shared_ptr<JackConnection> _jack_connection;
209 std::map<DataType,size_t> _raw_buffer_sizes;
211 std::vector<jack_native_thread_t> _jack_threads;
213 static int _xrun_callback (void *arg);
214 static void* _process_thread (void *arg);
215 static int _sample_rate_callback (pframes_t nframes, void *arg);
216 static int _bufsize_callback (pframes_t nframes, void *arg);
217 static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
218 static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
219 static void _freewheel_callback (int , void *arg);
220 static void _latency_callback (jack_latency_callback_mode_t, void*);
221 static void _session_callback (jack_session_event_t *event, void *arg);
223 void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
224 int jack_sync_callback (jack_transport_state_t, jack_position_t*);
225 int jack_bufsize_callback (pframes_t);
226 int jack_sample_rate_callback (pframes_t);
227 void freewheel_callback (int);
228 int process_callback (pframes_t nframes);
229 void jack_latency_callback (jack_latency_callback_mode_t);
230 void disconnected (const char*);
232 void set_jack_callbacks ();
233 int reconnect_to_jack ();
236 JACKAudioBackend* engine;
237 boost::function<void()> f;
240 ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
241 : engine (e) , f (fp) , stacksize (stacksz) {}
244 void* process_thread ();
245 static void* _start_process_thread (void*);
247 void setup_jack_startup_command (bool for_latency_measurement);
251 std::string _target_driver;
252 std::string _target_device;
253 float _target_sample_rate;
254 uint32_t _target_buffer_size;
255 SampleFormat _target_sample_format;
256 bool _target_interleaved;
257 uint32_t _target_input_channels;
258 uint32_t _target_output_channels;
259 uint32_t _target_systemic_input_latency;
260 uint32_t _target_systemic_output_latency;
261 uint32_t _current_sample_rate;
262 uint32_t _current_buffer_size;
263 std::string _target_midi_option;
265 typedef std::set<std::string> DeviceList;
266 typedef std::map<std::string,DeviceList> DriverDeviceMap;
268 mutable DriverDeviceMap all_devices;
270 PBD::ScopedConnection disconnect_connection;
272 /* PORTENGINE RELATED */
274 static int _graph_order_callback (void *arg);
275 static void _registration_callback (jack_port_id_t, int, void *);
276 static void _connect_callback (jack_port_id_t, jack_port_id_t, int, void *);
278 void connect_callback (jack_port_id_t, jack_port_id_t, int);
280 ChanCount n_physical (unsigned long flags) const;
281 void get_physical (DataType type, unsigned long flags, std::vector<std::string>& phy) const;
283 void when_connected_to_jack ();
284 PBD::ScopedConnection jack_connection_connection;
286 /* Object to manage interactions with Session in a way that
287 keeps JACK out of libardour directly
290 JACKSession* _session;
293 int _start (bool for_latency_measurement);
298 #endif /* __ardour_audiobackend_h__ */