2 * Copyright (C) 2014-2015 Robin Gareus <robin@gareus.org>
3 * Copyright (C) 2013 Paul Davis
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __libbackend_portaudio_backend_h__
21 #define __libbackend_portaudio_backend_h__
30 #include <boost/shared_ptr.hpp>
32 #include "ardour/audio_backend.h"
33 #include "ardour/types.h"
35 #include "portaudio_io.h"
36 #include "winmmemidi_io.h"
37 #include "cycle_timer.h"
41 class PortAudioBackend;
45 PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size);
46 PortMidiEvent (const PortMidiEvent& other);
48 size_t size () const { return _size; };
49 pframes_t timestamp () const { return _timestamp; };
50 const unsigned char* const_data () const { return _data; };
51 unsigned char* data () { return _data; };
52 bool operator< (const PortMidiEvent &other) const { return timestamp () < other.timestamp (); };
59 typedef std::vector<boost::shared_ptr<PortMidiEvent> > PortMidiBuffer;
61 class PamPort { // PortAudio / PortMidi Backend Port
63 PamPort (PortAudioBackend &b, const std::string&, PortFlags);
67 const std::string& name () const { return _name; }
68 PortFlags flags () const { return _flags; }
70 int set_name (const std::string &name) { _name = name; return 0; }
72 virtual DataType type () const = 0;
74 bool is_input () const { return flags () & IsInput; }
75 bool is_output () const { return flags () & IsOutput; }
76 bool is_physical () const { return flags () & IsPhysical; }
77 bool is_terminal () const { return flags () & IsTerminal; }
78 bool is_connected () const { return _connections.size () != 0; }
79 bool is_connected (const PamPort *port) const;
80 bool is_physically_connected () const;
82 const std::vector<PamPort *>& get_connections () const { return _connections; }
84 int connect (PamPort *port);
85 int disconnect (PamPort *port);
86 void disconnect_all ();
88 virtual void* get_buffer (pframes_t nframes) = 0;
90 const LatencyRange latency_range (bool for_playback) const
92 return for_playback ? _playback_latency_range : _capture_latency_range;
95 void set_latency_range (const LatencyRange &latency_range, bool for_playback)
99 _playback_latency_range = latency_range;
103 _capture_latency_range = latency_range;
108 PortAudioBackend &_osx_backend;
110 const PortFlags _flags;
111 LatencyRange _capture_latency_range;
112 LatencyRange _playback_latency_range;
113 std::vector<PamPort*> _connections;
115 void _connect (PamPort* , bool);
116 void _disconnect (PamPort* , bool);
120 class PortAudioPort : public PamPort {
122 PortAudioPort (PortAudioBackend &b, const std::string&, PortFlags);
125 DataType type () const { return DataType::AUDIO; };
127 Sample* buffer () { return _buffer; }
128 const Sample* const_buffer () const { return _buffer; }
129 void* get_buffer (pframes_t nframes);
132 Sample _buffer[8192];
133 }; // class PortAudioPort
135 class PortMidiPort : public PamPort {
137 PortMidiPort (PortAudioBackend &b, const std::string&, PortFlags);
140 DataType type () const { return DataType::MIDI; };
142 void* get_buffer (pframes_t nframes);
143 const PortMidiBuffer * const_buffer () const { return & _buffer[_bufperiod]; }
145 void next_period() { if (_n_periods > 1) { get_buffer(0); _bufperiod = (_bufperiod + 1) % _n_periods; } }
146 void set_n_periods(int n) { if (n > 0 && n < 3) { _n_periods = n; } }
149 PortMidiBuffer _buffer[2];
152 }; // class PortMidiPort
154 class PortAudioBackend : public AudioBackend {
155 friend class PamPort;
157 PortAudioBackend (AudioEngine& e, AudioBackendInfo& info);
158 ~PortAudioBackend ();
160 /* AUDIOBACKEND API */
162 std::string name () const;
163 bool is_realtime () const;
165 bool requires_driver_selection() const;
166 std::string driver_name () const;
167 std::vector<std::string> enumerate_drivers () const;
168 int set_driver (const std::string&);
170 bool use_separate_input_and_output_devices () const;
171 std::vector<DeviceStatus> enumerate_devices () const;
172 std::vector<DeviceStatus> enumerate_input_devices () const;
173 std::vector<DeviceStatus> enumerate_output_devices () const;
175 std::vector<float> available_sample_rates (const std::string& device) const;
176 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
177 uint32_t available_input_channel_count (const std::string& device) const;
178 uint32_t available_output_channel_count (const std::string& device) const;
180 bool can_change_sample_rate_when_running () const;
181 bool can_change_buffer_size_when_running () const;
183 int set_device_name (const std::string&);
184 int set_input_device_name (const std::string&);
185 int set_output_device_name (const std::string&);
186 int set_sample_rate (float);
187 int set_buffer_size (uint32_t);
188 int set_interleaved (bool yn);
189 int set_input_channels (uint32_t);
190 int set_output_channels (uint32_t);
191 int set_systemic_input_latency (uint32_t);
192 int set_systemic_output_latency (uint32_t);
193 int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; }
194 int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
196 int reset_device () { return 0; };
198 /* Retrieving parameters */
199 std::string device_name () const;
200 std::string input_device_name () const;
201 std::string output_device_name () const;
202 float sample_rate () const;
203 uint32_t buffer_size () const;
204 bool interleaved () const;
205 uint32_t input_channels () const;
206 uint32_t output_channels () const;
207 uint32_t systemic_input_latency () const;
208 uint32_t systemic_output_latency () const;
209 uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
210 uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
212 bool can_set_systemic_midi_latencies () const { return false; }
214 /* External control app */
215 std::string control_app_name () const { return std::string (); }
216 void launch_control_app () {}
219 std::vector<std::string> enumerate_midi_options () const;
220 int set_midi_option (const std::string&);
221 std::string midi_option () const;
223 std::vector<DeviceStatus> enumerate_midi_devices () const {
224 return std::vector<AudioBackend::DeviceStatus> ();
226 int set_midi_device_enabled (std::string const, bool) {
229 bool midi_device_enabled (std::string const) const {
235 int _start (bool for_latency_measurement);
238 int freewheel (bool);
239 float dsp_load () const;
240 size_t raw_buffer_size (DataType t);
243 framepos_t sample_time ();
244 framepos_t sample_time_at_cycle_start ();
245 pframes_t samples_since_cycle_start ();
247 int create_process_thread (boost::function<void()> func);
248 int join_process_threads ();
249 bool in_process_thread ();
250 uint32_t process_thread_count ();
252 void update_latencies ();
256 void* private_handle () const;
257 const std::string& my_name () const;
258 bool available () const;
259 uint32_t port_name_size () const;
261 int set_port_name (PortHandle, const std::string&);
262 std::string get_port_name (PortHandle) const;
263 PortHandle get_port_by_name (const std::string&) const;
265 int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
267 DataType port_data_type (PortHandle) const;
269 PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
270 void unregister_port (PortHandle);
272 int connect (const std::string& src, const std::string& dst);
273 int disconnect (const std::string& src, const std::string& dst);
274 int connect (PortHandle, const std::string&);
275 int disconnect (PortHandle, const std::string&);
276 int disconnect_all (PortHandle);
278 bool connected (PortHandle, bool process_callback_safe);
279 bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
280 bool physically_connected (PortHandle, bool process_callback_safe);
281 int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
284 int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index);
285 int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
286 uint32_t get_midi_event_count (void* port_buffer);
287 void midi_clear (void* port_buffer);
291 bool can_monitor_input () const;
292 int request_input_monitoring (PortHandle, bool);
293 int ensure_input_monitoring (PortHandle, bool);
294 bool monitoring_input (PortHandle);
296 /* Latency management */
298 void set_latency_range (PortHandle, bool for_playback, LatencyRange);
299 LatencyRange get_latency_range (PortHandle, bool for_playback);
301 /* Discovering physical ports */
303 bool port_is_physical (PortHandle) const;
304 void get_physical_outputs (DataType type, std::vector<std::string>&);
305 void get_physical_inputs (DataType type, std::vector<std::string>&);
306 ChanCount n_physical_outputs () const;
307 ChanCount n_physical_inputs () const;
309 /* Getting access to the data buffer for a port */
311 void* get_buffer (PortHandle, pframes_t);
313 void* main_process_thread ();
316 std::string _instance_name;
318 WinMMEMidiIO *_midiio;
320 bool _run; /* keep going or stop, ardour thread */
321 bool _active; /* is running, process thread */
324 bool _measure_latency;
326 uint64_t m_cycle_count;
327 uint64_t m_total_deviation_us;
328 uint64_t m_max_deviation_us;
330 CycleTimer m_cycle_timer;
331 uint64_t m_last_cycle_start;
333 static std::vector<std::string> _midi_options;
334 static std::vector<AudioBackend::DeviceStatus> _input_audio_device_status;
335 static std::vector<AudioBackend::DeviceStatus> _output_audio_device_status;
336 static std::vector<AudioBackend::DeviceStatus> _midi_device_status;
338 mutable std::string _input_audio_device;
339 mutable std::string _output_audio_device;
340 std::string _midi_driver_option;
344 size_t _samples_per_period;
345 static size_t _max_buffer_size;
350 uint32_t _systemic_audio_input_latency;
351 uint32_t _systemic_audio_output_latency;
353 /* portaudio specific */
354 int name_to_id(std::string) const;
358 framecnt_t _processed_samples;
359 pthread_t _main_thread;
361 /* process threads */
362 static void* portaudio_process_thread (void *);
363 std::vector<pthread_t> _threads;
366 PortAudioBackend* engine;
367 boost::function<void ()> f;
370 ThreadData (PortAudioBackend* e, boost::function<void ()> fp, size_t stacksz)
371 : engine (e) , f (fp) , stacksize (stacksz) {}
375 PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
376 int register_system_audio_ports ();
377 int register_system_midi_ports ();
378 void unregister_ports (bool system_only = false);
380 std::vector<PamPort *> _ports;
381 std::vector<PamPort *> _system_inputs;
382 std::vector<PamPort *> _system_outputs;
383 std::vector<PamPort *> _system_midi_in;
384 std::vector<PamPort *> _system_midi_out;
386 struct PortConnectData {
391 PortConnectData (const std::string& a, const std::string& b, bool c)
392 : a (a) , b (b) , c (c) {}
395 std::vector<PortConnectData *> _port_connection_queue;
396 pthread_mutex_t _port_callback_mutex;
397 bool _port_change_flag;
399 void port_connect_callback (const std::string& a, const std::string& b, bool conn) {
400 pthread_mutex_lock (&_port_callback_mutex);
401 _port_connection_queue.push_back(new PortConnectData(a, b, conn));
402 pthread_mutex_unlock (&_port_callback_mutex);
405 void port_connect_add_remove_callback () {
406 pthread_mutex_lock (&_port_callback_mutex);
407 _port_change_flag = true;
408 pthread_mutex_unlock (&_port_callback_mutex);
411 bool valid_port (PortHandle port) const {
412 return std::find (_ports.begin (), _ports.end (), (PamPort*)port) != _ports.end ();
415 PamPort * find_port (const std::string& port_name) const {
416 for (std::vector<PamPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
417 if ((*it)->name () == port_name) {
424 PamPort * find_port_in (std::vector<PamPort *> plist, const std::string& port_name) const {
425 for (std::vector<PamPort*>::const_iterator it = plist.begin (); it != plist.end (); ++it) {
426 if ((*it)->name () == port_name) {
433 }; // class PortAudioBackend
437 #endif /* __libbackend_portaudio_backend_h__ */