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 "weak_libjack.h"
34 #include "ardour/audio_backend.h"
41 class JACKAudioBackend : public AudioBackend {
43 JACKAudioBackend (AudioEngine& e, AudioBackendInfo& info, boost::shared_ptr<JackConnection>);
46 /* AUDIOBACKEND API */
48 std::string name() const;
49 void* private_handle() const;
50 bool is_realtime () const;
52 bool requires_driver_selection() const;
53 std::vector<std::string> enumerate_drivers () const;
54 int set_driver (const std::string&);
56 std::vector<DeviceStatus> enumerate_devices () const;
58 std::vector<float> available_sample_rates (const std::string& device) const;
59 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
60 std::vector<uint32_t> available_period_sizes (const std::string& driver) 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_peridod_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 uint32_t period_size () const;
85 bool interleaved () const;
86 uint32_t input_channels () const;
87 uint32_t output_channels () const;
88 uint32_t systemic_input_latency () const;
89 uint32_t systemic_output_latency () const;
90 uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
91 uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
92 std::string driver_name() const;
94 std::string control_app_name () const;
95 void launch_control_app ();
100 float dsp_load() const;
102 samplepos_t sample_time ();
103 samplepos_t sample_time_at_cycle_start ();
104 pframes_t samples_since_cycle_start ();
106 size_t raw_buffer_size (DataType t);
108 int create_process_thread (boost::function<void()> func);
109 int join_process_threads ();
110 bool in_process_thread ();
111 uint32_t process_thread_count ();
112 int client_real_time_priority ();
114 void transport_start ();
115 void transport_stop ();
116 void transport_locate (samplepos_t /*pos*/);
117 TransportState transport_state () const;
118 samplepos_t transport_sample() const;
120 int set_time_master (bool /*yn*/);
121 bool get_sync_offset (pframes_t& /*offset*/) const;
123 void update_latencies ();
125 static bool already_configured();
129 const std::string& my_name() const;
130 uint32_t port_name_size() const;
132 int set_port_name (PortHandle, const std::string&);
133 std::string get_port_name (PortHandle) const;
134 PortFlags get_port_flags (PortHandle) const;
135 PortHandle get_port_by_name (const std::string&) const;
136 int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const;
137 int set_port_property (PortHandle, const std::string& key, const std::string& value, const std::string& type);
139 int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
141 DataType port_data_type (PortHandle) const;
143 PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
144 void unregister_port (PortHandle);
146 bool connected (PortHandle, bool process_callback_safe);
147 bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
148 bool physically_connected (PortHandle, bool process_callback_safe);
149 bool externally_connected (PortHandle, bool process_callback_safe);
150 int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
151 int connect (PortHandle, const std::string&);
153 int disconnect (PortHandle, const std::string&);
154 int disconnect_all (PortHandle);
155 int connect (const std::string& src, const std::string& dst);
156 int disconnect (const std::string& src, const std::string& dst);
160 std::vector<std::string> enumerate_midi_options () const;
161 int set_midi_option (const std::string&);
162 std::string midi_option () const;
164 std::vector<DeviceStatus> enumerate_midi_devices () const {
165 return std::vector<AudioBackend::DeviceStatus> ();
167 int set_midi_device_enabled (std::string const, bool) {
170 bool midi_device_enabled (std::string const) const {
173 bool can_set_systemic_midi_latencies () const {
176 bool can_set_period_size () const {
180 int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t const** buf, void* port_buffer, uint32_t event_index);
181 int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
182 uint32_t get_midi_event_count (void* port_buffer);
183 void midi_clear (void* port_buffer);
187 bool can_monitor_input() const;
188 int request_input_monitoring (PortHandle, bool);
189 int ensure_input_monitoring (PortHandle, bool);
190 bool monitoring_input (PortHandle);
192 /* Latency management
195 void set_latency_range (PortHandle, bool for_playback, LatencyRange);
196 LatencyRange get_latency_range (PortHandle, bool for_playback);
200 bool port_is_physical (PortHandle) const;
201 void get_physical_outputs (DataType type, std::vector<std::string>&);
202 void get_physical_inputs (DataType type, std::vector<std::string>&);
203 ChanCount n_physical_outputs () const;
204 ChanCount n_physical_inputs () const;
206 /* Getting access to the data buffer for a port */
208 void* get_buffer (PortHandle, pframes_t);
212 bool speed_and_position (double& sp, samplepos_t& pos);
215 boost::shared_ptr<JackConnection> _jack_connection;
218 std::map<DataType,size_t> _raw_buffer_sizes;
220 std::vector<jack_native_thread_t> _jack_threads;
221 jack_native_thread_t _main_thread;
223 static int _xrun_callback (void *arg);
224 static void* _process_thread (void *arg);
225 static int _sample_rate_callback (pframes_t nframes, void *arg);
226 static int _bufsize_callback (pframes_t nframes, void *arg);
227 static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
228 static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
229 static void _freewheel_callback (int , void *arg);
230 static void _latency_callback (jack_latency_callback_mode_t, void*);
231 static void _session_callback (jack_session_event_t *event, void *arg);
233 void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
234 int jack_sync_callback (jack_transport_state_t, jack_position_t*);
235 int jack_bufsize_callback (pframes_t);
236 int jack_sample_rate_callback (pframes_t);
237 void freewheel_callback (int);
238 int process_callback (pframes_t nframes);
239 void jack_latency_callback (jack_latency_callback_mode_t);
240 void disconnected (const char*);
242 void set_jack_callbacks ();
243 int reconnect_to_jack ();
245 bool available() const;
248 JACKAudioBackend* engine;
249 boost::function<void()> f;
252 ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
253 : engine (e) , f (fp) , stacksize (stacksz) {}
256 void* process_thread ();
257 static void* _start_process_thread (void*);
259 void setup_jack_startup_command (bool for_latency_measurement);
263 std::string _target_driver;
264 std::string _target_device;
265 float _target_sample_rate;
266 uint32_t _target_buffer_size;
267 uint32_t _target_num_periods;
268 SampleFormat _target_sample_format;
269 bool _target_interleaved;
270 uint32_t _target_input_channels;
271 uint32_t _target_output_channels;
272 uint32_t _target_systemic_input_latency;
273 uint32_t _target_systemic_output_latency;
274 uint32_t _current_sample_rate;
275 uint32_t _current_buffer_size;
276 std::string _target_midi_option;
278 typedef std::set<std::string> DeviceList;
279 typedef std::map<std::string,DeviceList> DriverDeviceMap;
281 mutable DriverDeviceMap all_devices;
283 PBD::ScopedConnection disconnect_connection;
285 /* PORTENGINE RELATED */
287 static int _graph_order_callback (void *arg);
288 static void _registration_callback (jack_port_id_t, int, void *);
289 static void _connect_callback (jack_port_id_t, jack_port_id_t, int, void *);
291 void connect_callback (jack_port_id_t, jack_port_id_t, int);
293 ChanCount n_physical (unsigned long flags) const;
294 void get_physical (DataType type, unsigned long flags, std::vector<std::string>& phy) const;
296 void when_connected_to_jack ();
297 PBD::ScopedConnection jack_connection_connection;
299 /* Object to manage interactions with Session in a way that
300 keeps JACK out of libardour directly
303 JACKSession* _session;
306 int _start (bool for_latency_measurement);
311 #endif /* __ardour_audiobackend_h__ */