2 * Copyright (C) 2014 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_coreaudio_backend_h__
21 #define __libbackend_coreaudio_backend_h__
31 #include <boost/shared_ptr.hpp>
33 #include "pbd/natsort.h"
34 #include "ardour/audio_backend.h"
35 #include "ardour/dsp_load_calculator.h"
36 #include "ardour/types.h"
38 #include "coreaudio_pcmio.h"
39 #include "coremidi_io.h"
41 #define MaxCoreMidiEventSize 128 // matches CoreMidi's MIDIPacket
45 class CoreAudioBackend;
49 CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size);
50 CoreMidiEvent (const CoreMidiEvent& other);
51 size_t size () const { return _size; };
52 pframes_t timestamp () const { return _timestamp; };
53 const uint8_t* data () const { return _data; };
54 bool operator< (const CoreMidiEvent &other) const { return timestamp () < other.timestamp (); };
58 uint8_t _data[MaxCoreMidiEventSize];
61 typedef std::vector<CoreMidiEvent> CoreMidiBuffer;
63 class CoreBackendPort {
65 CoreBackendPort (CoreAudioBackend &b, const std::string&, PortFlags);
67 virtual ~CoreBackendPort ();
69 const std::string& name () const { return _name; }
70 const std::string& pretty_name () const { return _pretty_name; }
71 PortFlags flags () const { return _flags; }
73 int set_name (const std::string &name) { _name = name; return 0; }
74 int set_pretty_name (const std::string &name) { _pretty_name = name; return 0; }
76 virtual DataType type () const = 0;
78 bool is_input () const { return flags () & IsInput; }
79 bool is_output () const { return flags () & IsOutput; }
80 bool is_physical () const { return flags () & IsPhysical; }
81 bool is_terminal () const { return flags () & IsTerminal; }
82 bool is_connected () const { return _connections.size () != 0; }
83 bool is_connected (const CoreBackendPort *port) const;
84 bool is_physically_connected () const;
86 const std::set<CoreBackendPort *>& get_connections () const { return _connections; }
88 int connect (CoreBackendPort *port);
89 int disconnect (CoreBackendPort *port);
90 void disconnect_all ();
92 virtual void* get_buffer (pframes_t nframes) = 0;
94 const LatencyRange latency_range (bool for_playback) const
96 return for_playback ? _playback_latency_range : _capture_latency_range;
99 void set_latency_range (const LatencyRange &latency_range, bool for_playback)
103 _playback_latency_range = latency_range;
107 _capture_latency_range = latency_range;
112 CoreAudioBackend &_osx_backend;
114 std::string _pretty_name;
115 const PortFlags _flags;
116 LatencyRange _capture_latency_range;
117 LatencyRange _playback_latency_range;
118 std::set<CoreBackendPort*> _connections;
120 void _connect (CoreBackendPort* , bool);
121 void _disconnect (CoreBackendPort* , bool);
123 }; // class CoreBackendPort
125 class CoreAudioPort : public CoreBackendPort {
127 CoreAudioPort (CoreAudioBackend &b, const std::string&, PortFlags);
130 DataType type () const { return DataType::AUDIO; };
132 Sample* buffer () { return _buffer; }
133 const Sample* const_buffer () const { return _buffer; }
134 void* get_buffer (pframes_t nframes);
137 Sample _buffer[8192];
138 }; // class CoreAudioPort
140 class CoreMidiPort : public CoreBackendPort {
142 CoreMidiPort (CoreAudioBackend &b, const std::string&, PortFlags);
145 DataType type () const { return DataType::MIDI; };
147 void* get_buffer (pframes_t nframes);
148 const CoreMidiBuffer * const_buffer () const { return & _buffer[_bufperiod]; }
150 void next_period() { if (_n_periods > 1) { get_buffer(0); _bufperiod = (_bufperiod + 1) % _n_periods; } }
151 void set_n_periods(int n) { if (n > 0 && n < 3) { _n_periods = n; } }
153 void parse_events (const uint64_t time, const uint8_t *data, const size_t size);
154 void clear_events ();
155 void reset_parser ();
158 CoreMidiBuffer _buffer[2];
162 int queue_event (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
163 bool process_byte (const uint64_t, const uint8_t);
165 void record_byte(uint8_t byte) {
166 if (_total_bytes < sizeof(_parser_buffer)) {
167 _parser_buffer[_total_bytes] = byte;
174 void prepare_byte_event(const uint64_t time, const uint8_t byte) {
175 _parser_buffer[0] = byte;
176 _event.prepare(time, 1);
179 bool prepare_buffered_event(const uint64_t time) {
180 const bool result = _unbuffered_bytes == 0;
182 _event.prepare(time, _total_bytes);
185 _unbuffered_bytes = 0;
186 if (_status_byte >= 0xf0) {
197 ParserEvent (const uint64_t time, const size_t size)
202 void prepare(const uint64_t time, const size_t size) {
210 size_t _unbuffered_bytes;
212 size_t _expected_bytes;
213 uint8_t _status_byte;
214 uint8_t _parser_buffer[1024];
216 }; // class CoreMidiPort
218 class CoreAudioBackend : public AudioBackend {
219 friend class CoreBackendPort;
221 CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info);
222 ~CoreAudioBackend ();
224 /* AUDIOBACKEND API */
226 std::string name () const;
227 bool is_realtime () const;
229 bool use_separate_input_and_output_devices () const { return true; }
230 std::vector<DeviceStatus> enumerate_devices () const;
231 std::vector<DeviceStatus> enumerate_input_devices () const;
232 std::vector<DeviceStatus> enumerate_output_devices () const;
234 std::vector<float> available_sample_rates (const std::string& device) const;
235 std::vector<float> available_sample_rates2 (const std::string&, const std::string&) const;
236 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
237 std::vector<uint32_t> available_buffer_sizes2 (const std::string&, const std::string&) const;
238 uint32_t available_input_channel_count (const std::string& device) const;
239 uint32_t available_output_channel_count (const std::string& device) const;
241 bool can_change_sample_rate_when_running () const;
242 bool can_change_buffer_size_when_running () const;
244 int set_device_name (const std::string&);
245 int set_input_device_name (const std::string&);
246 int set_output_device_name (const std::string&);
247 int set_sample_rate (float);
248 int set_buffer_size (uint32_t);
249 int set_interleaved (bool yn);
250 int set_input_channels (uint32_t);
251 int set_output_channels (uint32_t);
252 int set_systemic_input_latency (uint32_t);
253 int set_systemic_output_latency (uint32_t);
254 int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; }
255 int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
257 int reset_device () { return 0; };
259 /* Retrieving parameters */
260 std::string device_name () const;
261 std::string input_device_name () const;
262 std::string output_device_name () const;
263 float sample_rate () const;
264 uint32_t buffer_size () const;
265 bool interleaved () const;
266 uint32_t input_channels () const;
267 uint32_t output_channels () const;
268 uint32_t systemic_input_latency () const;
269 uint32_t systemic_output_latency () const;
270 uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
271 uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
273 bool can_set_systemic_midi_latencies () const { return false; /* XXX */}
275 /* External control app */
276 std::string control_app_name () const { return std::string ("Apple"); }
277 void launch_control_app ();
280 std::vector<std::string> enumerate_midi_options () const;
281 int set_midi_option (const std::string&);
282 std::string midi_option () const;
284 std::vector<DeviceStatus> enumerate_midi_devices () const {
285 return std::vector<AudioBackend::DeviceStatus> ();
287 int set_midi_device_enabled (std::string const, bool) {
290 bool midi_device_enabled (std::string const) const {
294 // really private, but needing static access:
295 int process_callback(uint32_t, uint64_t);
296 void error_callback();
297 void xrun_callback();
298 void buffer_size_callback();
299 void sample_rate_callback();
300 void hw_changed_callback();
304 int _start (bool for_latency_measurement);
307 int freewheel (bool);
308 float dsp_load () const;
309 size_t raw_buffer_size (DataType t);
312 framepos_t sample_time ();
313 framepos_t sample_time_at_cycle_start ();
314 pframes_t samples_since_cycle_start ();
316 int create_process_thread (boost::function<void()> func);
317 int join_process_threads ();
318 bool in_process_thread ();
319 uint32_t process_thread_count ();
321 void update_latencies ();
325 void* private_handle () const;
326 const std::string& my_name () const;
327 bool available () const;
328 uint32_t port_name_size () const;
330 int set_port_name (PortHandle, const std::string&);
331 std::string get_port_name (PortHandle) const;
332 PortHandle get_port_by_name (const std::string&) const;
333 int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const;
334 int set_port_property (PortHandle, const std::string& key, const std::string& value, const std::string& type);
336 int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
338 DataType port_data_type (PortHandle) const;
340 PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
341 void unregister_port (PortHandle);
343 int connect (const std::string& src, const std::string& dst);
344 int disconnect (const std::string& src, const std::string& dst);
345 int connect (PortHandle, const std::string&);
346 int disconnect (PortHandle, const std::string&);
347 int disconnect_all (PortHandle);
349 bool connected (PortHandle, bool process_callback_safe);
350 bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
351 bool physically_connected (PortHandle, bool process_callback_safe);
352 int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
355 int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t const** buf, void* port_buffer, uint32_t event_index);
356 int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size) {
357 return _midi_event_put (port_buffer, timestamp, buffer, size);
360 uint32_t get_midi_event_count (void* port_buffer);
361 void midi_clear (void* port_buffer);
365 bool can_monitor_input () const;
366 int request_input_monitoring (PortHandle, bool);
367 int ensure_input_monitoring (PortHandle, bool);
368 bool monitoring_input (PortHandle);
370 /* Latency management */
372 void set_latency_range (PortHandle, bool for_playback, LatencyRange);
373 LatencyRange get_latency_range (PortHandle, bool for_playback);
375 /* Discovering physical ports */
377 bool port_is_physical (PortHandle) const;
378 void get_physical_outputs (DataType type, std::vector<std::string>&);
379 void get_physical_inputs (DataType type, std::vector<std::string>&);
380 ChanCount n_physical_outputs () const;
381 ChanCount n_physical_inputs () const;
383 /* Getting access to the data buffer for a port */
385 void* get_buffer (PortHandle, pframes_t);
387 void* freewheel_thread ();
389 void coremidi_rediscover ();
391 static int _midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
394 std::string _instance_name;
395 CoreAudioPCM *_pcmio;
398 bool _run; /* keep going or stop, ardour thread */
399 bool _active_ca; /* is running, process thread */
400 bool _active_fw; /* is running, process thread */
405 bool _reinit_thread_callback;
406 bool _measure_latency;
408 uint64_t _last_process_start;
410 pthread_mutex_t _process_callback_mutex;
412 pthread_mutex_t _freewheel_mutex;
413 pthread_cond_t _freewheel_signal;
415 static std::vector<std::string> _midi_options;
416 static std::vector<AudioBackend::DeviceStatus> _input_audio_device_status;
417 static std::vector<AudioBackend::DeviceStatus> _output_audio_device_status;
418 static std::vector<AudioBackend::DeviceStatus> _duplex_audio_device_status;
419 static std::vector<AudioBackend::DeviceStatus> _midi_device_status;
421 mutable std::string _input_audio_device;
422 mutable std::string _output_audio_device;
423 std::string _midi_driver_option;
427 size_t _samples_per_period;
428 static size_t _max_buffer_size;
433 uint32_t _systemic_audio_input_latency;
434 uint32_t _systemic_audio_output_latency;
436 /* coreaudio specific */
437 enum DeviceFilter { All, Input, Output, Duplex };
438 uint32_t name_to_id(std::string, DeviceFilter filter = All) const;
442 ARDOUR::DSPLoadCalculator _dsp_load_calc;
443 uint64_t _processed_samples;
445 pthread_t _main_thread;
446 pthread_t _freeewheel_thread;
448 /* process threads */
449 static void* coreaudio_process_thread (void *);
450 bool coreaudio_set_realtime_policy (pthread_t) const;
451 std::vector<pthread_t> _threads;
454 CoreAudioBackend* engine;
455 boost::function<void ()> f;
458 ThreadData (CoreAudioBackend* e, boost::function<void ()> fp, size_t stacksz)
459 : engine (e) , f (fp) , stacksize (stacksz) {}
463 PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
464 int register_system_audio_ports ();
465 void unregister_ports (bool system_only = false);
467 std::vector<CoreBackendPort *> _system_inputs;
468 std::vector<CoreBackendPort *> _system_outputs;
469 std::vector<CoreBackendPort *> _system_midi_in;
470 std::vector<CoreBackendPort *> _system_midi_out;
472 struct SortByPortName
474 bool operator ()(const CoreBackendPort* lhs, const CoreBackendPort* rhs) const
476 return PBD::naturally_less (lhs->name ().c_str (), rhs->name ().c_str ());
480 typedef std::map<std::string, CoreBackendPort *> PortMap; // fast lookup in _ports
481 typedef std::set<CoreBackendPort *, SortByPortName> PortIndex; // fast lookup in _ports
485 struct PortConnectData {
490 PortConnectData (const std::string& a, const std::string& b, bool c)
491 : a (a) , b (b) , c (c) {}
494 std::vector<PortConnectData *> _port_connection_queue;
495 pthread_mutex_t _port_callback_mutex;
496 bool _port_change_flag;
498 void port_connect_callback (const std::string& a, const std::string& b, bool conn) {
499 pthread_mutex_lock (&_port_callback_mutex);
500 _port_connection_queue.push_back(new PortConnectData(a, b, conn));
501 pthread_mutex_unlock (&_port_callback_mutex);
504 void port_connect_add_remove_callback () {
505 pthread_mutex_lock (&_port_callback_mutex);
506 _port_change_flag = true;
507 pthread_mutex_unlock (&_port_callback_mutex);
510 bool valid_port (PortHandle port) const {
511 return std::find (_ports.begin(), _ports.end(), static_cast<CoreBackendPort*>(port)) != _ports.end ();
514 CoreBackendPort* find_port (const std::string& port_name) const {
515 PortMap::const_iterator it = _portmap.find (port_name);
516 if (it == _portmap.end()) {
522 CoreBackendPort * find_port_in (std::vector<CoreBackendPort *> plist, const std::string& port_name) const {
523 for (std::vector<CoreBackendPort*>::const_iterator it = plist.begin (); it != plist.end (); ++it) {
524 if ((*it)->name () == port_name) {
531 void reset_midi_parsers ();
533 }; // class CoreAudioBackend
537 #endif /* __libbackend_coreaudio_backend_h__ */