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_asio_backend_h__
21 #define __libbackend_asio_backend_h__
31 #include <boost/shared_ptr.hpp>
33 #include "ardour/audio_backend.h"
34 #include "ardour/types.h"
40 class WindowsMidiEvent {
42 WindowsMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size);
43 WindowsMidiEvent (const WindowsMidiEvent& other);
45 size_t size () const { return _size; };
46 pframes_t timestamp () const { return _timestamp; };
47 const unsigned char* const_data () const { return _data; };
48 unsigned char* data () { return _data; };
49 bool operator< (const WindowsMidiEvent &other) const { return timestamp () < other.timestamp (); };
56 typedef std::vector<boost::shared_ptr<WindowsMidiEvent> > WindowsMidiBuffer;
58 class ASIOBackendPort {
60 ASIOBackendPort (ASIOBackend &b, const std::string&, PortFlags);
62 virtual ~ASIOBackendPort ();
64 const std::string& name () const { return _name; }
65 const std::string& pretty_name () const { return _pretty_name; }
66 PortFlags flags () const { return _flags; }
68 int set_name (const std::string &name) { _name = name; return 0; }
69 int set_pretty_name (const std::string &name) { _pretty_name = name; return 0; }
71 virtual DataType type () const = 0;
73 bool is_input () const { return flags () & IsInput; }
74 bool is_output () const { return flags () & IsOutput; }
75 bool is_physical () const { return flags () & IsPhysical; }
76 bool is_terminal () const { return flags () & IsTerminal; }
77 bool is_connected () const { return _connections.size () != 0; }
78 bool is_connected (const ASIOBackendPort *port) const;
79 bool is_physically_connected () const;
81 const std::vector<ASIOBackendPort *>& get_connections () const { return _connections; }
83 int connect (ASIOBackendPort *port);
84 int disconnect (ASIOBackendPort *port);
85 void disconnect_all ();
87 virtual void* get_buffer (pframes_t nframes) = 0;
89 const LatencyRange latency_range (bool for_playback) const
91 return for_playback ? _playback_latency_range : _capture_latency_range;
94 void set_latency_range (const LatencyRange &latency_range, bool for_playback)
98 _playback_latency_range = latency_range;
102 _capture_latency_range = latency_range;
107 ASIOBackend &_osx_backend;
109 std::string _pretty_name;
110 const PortFlags _flags;
111 LatencyRange _capture_latency_range;
112 LatencyRange _playback_latency_range;
113 std::vector<ASIOBackendPort*> _connections;
115 void _connect (ASIOBackendPort* , bool);
116 void _disconnect (ASIOBackendPort* , bool);
118 }; // class ASIOBackendPort
120 class ASIOPort : public ASIOBackendPort {
122 ASIOPort (ASIOBackend &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];
135 class WindowsMidiPort : public ASIOBackendPort {
137 WindowsMidiPort (ASIOBackend &b, const std::string&, PortFlags);
140 DataType type () const { return DataType::MIDI; };
142 void* get_buffer (pframes_t nframes);
143 const WindowsMidiBuffer * 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 WindowsMidiBuffer _buffer[2];
152 }; // class WindowsMidiPort
154 class ASIOBackend : public AudioBackend {
155 friend class ASIOBackendPort;
157 ASIOBackend (AudioEngine& e, AudioBackendInfo& info);
160 /* AUDIOBACKEND API */
162 std::string name () const;
163 bool is_realtime () const;
165 std::vector<DeviceStatus> enumerate_devices () const;
166 std::vector<float> available_sample_rates (const std::string& device) const;
167 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
168 uint32_t available_input_channel_count (const std::string& device) const;
169 uint32_t available_output_channel_count (const std::string& device) const;
171 bool can_change_sample_rate_when_running () const;
172 bool can_change_buffer_size_when_running () const;
174 int set_device_name (const std::string&);
175 int set_sample_rate (float);
176 int set_buffer_size (uint32_t);
177 int set_interleaved (bool yn);
178 int set_input_channels (uint32_t);
179 int set_output_channels (uint32_t);
180 int set_systemic_input_latency (uint32_t);
181 int set_systemic_output_latency (uint32_t);
182 int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; }
183 int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
185 int reset_device () { return 0; };
187 /* Retrieving parameters */
188 std::string device_name () const;
189 float sample_rate () const;
190 uint32_t buffer_size () const;
191 bool interleaved () const;
192 uint32_t input_channels () const;
193 uint32_t output_channels () const;
194 uint32_t systemic_input_latency () const;
195 uint32_t systemic_output_latency () const;
196 uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
197 uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
199 bool can_set_systemic_midi_latencies () const { return false; /* TODO */}
201 /* External control app - TODO */
202 std::string control_app_name () const { return std::string (); /* return std::string ("Windows"); */ }
203 void launch_control_app ();
206 std::vector<std::string> enumerate_midi_options () const;
207 int set_midi_option (const std::string&);
208 std::string midi_option () const;
210 std::vector<DeviceStatus> enumerate_midi_devices () const {
211 return std::vector<AudioBackend::DeviceStatus> ();
213 int set_midi_device_enabled (std::string const, bool) {
216 bool midi_device_enabled (std::string const) const {
220 // really private, but needing static access:
221 int process_callback(uint32_t, uint64_t);
222 void error_callback();
223 void xrun_callback();
224 void buffer_size_callback();
225 void sample_rate_callback();
226 void hw_changed_callback();
230 int _start (bool for_latency_measurement);
233 int freewheel (bool);
234 float dsp_load () const;
235 size_t raw_buffer_size (DataType t);
238 framepos_t sample_time ();
239 framepos_t sample_time_at_cycle_start ();
240 pframes_t samples_since_cycle_start ();
242 int create_process_thread (boost::function<void()> func);
243 int join_process_threads ();
244 bool in_process_thread ();
245 uint32_t process_thread_count ();
247 void update_latencies ();
251 void* private_handle () const;
252 const std::string& my_name () const;
253 bool available () const;
254 uint32_t port_name_size () const;
256 int set_port_name (PortHandle, const std::string&);
257 std::string get_port_name (PortHandle) const;
258 PortHandle get_port_by_name (const std::string&) const;
259 int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const;
261 int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
263 DataType port_data_type (PortHandle) const;
265 PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
266 void unregister_port (PortHandle);
268 int connect (const std::string& src, const std::string& dst);
269 int disconnect (const std::string& src, const std::string& dst);
270 int connect (PortHandle, const std::string&);
271 int disconnect (PortHandle, const std::string&);
272 int disconnect_all (PortHandle);
274 bool connected (PortHandle, bool process_callback_safe);
275 bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
276 bool physically_connected (PortHandle, bool process_callback_safe);
277 int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
280 int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index);
281 int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
282 uint32_t get_midi_event_count (void* port_buffer);
283 void midi_clear (void* port_buffer);
287 bool can_monitor_input () const;
288 int request_input_monitoring (PortHandle, bool);
289 int ensure_input_monitoring (PortHandle, bool);
290 bool monitoring_input (PortHandle);
292 /* Latency management */
294 void set_latency_range (PortHandle, bool for_playback, LatencyRange);
295 LatencyRange get_latency_range (PortHandle, bool for_playback);
297 /* Discovering physical ports */
299 bool port_is_physical (PortHandle) const;
300 void get_physical_outputs (DataType type, std::vector<std::string>&);
301 void get_physical_inputs (DataType type, std::vector<std::string>&);
302 ChanCount n_physical_outputs () const;
303 ChanCount n_physical_inputs () const;
305 /* Getting access to the data buffer for a port */
307 void* get_buffer (PortHandle, pframes_t);
309 void* freewheel_thread ();
313 std::string _instance_name;
314 //ASIOPCM *_pcmio; // TODO
315 //WindowsMidiIo *_midiio; // TODO
317 bool _run; /* keep going or stop, ardour thread */
318 bool _active_cb; /* is running, asio callback */
319 bool _active_fw; /* is running, freewheel thread */
324 bool _reinit_thread_callback;
325 bool _measure_latency;
327 uint64_t _last_process_start;
329 pthread_mutex_t _process_callback_mutex;
331 pthread_mutex_t _freewheel_mutex;
332 pthread_cond_t _freewheel_signal;
334 static std::vector<std::string> _midi_options;
335 static std::vector<AudioBackend::DeviceStatus> _audio_device_status;
336 static std::vector<AudioBackend::DeviceStatus> _midi_device_status;
338 mutable std::string _audio_device;
339 std::string _midi_driver_option;
343 size_t _samples_per_period;
344 static size_t _max_buffer_size;
349 uint32_t _systemic_audio_input_latency;
350 uint32_t _systemic_audio_output_latency;
354 uint64_t _processed_samples;
356 pthread_t _main_thread;
357 pthread_t _freeewheel_thread;
359 /* process threads */
360 static void* asio_process_thread (void *);
361 std::vector<pthread_t> _threads;
365 boost::function<void ()> f;
368 ThreadData (ASIOBackend* e, boost::function<void ()> fp, size_t stacksz)
369 : engine (e) , f (fp) , stacksize (stacksz) {}
373 PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
374 int register_system_audio_ports ();
375 void unregister_ports (bool system_only = false);
377 std::vector<ASIOBackendPort *> _ports;
378 std::vector<ASIOBackendPort *> _system_inputs;
379 std::vector<ASIOBackendPort *> _system_outputs;
380 std::vector<ASIOBackendPort *> _system_midi_in;
381 std::vector<ASIOBackendPort *> _system_midi_out;
383 struct PortConnectData {
388 PortConnectData (const std::string& a, const std::string& b, bool c)
389 : a (a) , b (b) , c (c) {}
392 std::vector<PortConnectData *> _port_connection_queue;
393 pthread_mutex_t _port_callback_mutex;
394 bool _port_change_flag;
396 void port_connect_callback (const std::string& a, const std::string& b, bool conn) {
397 pthread_mutex_lock (&_port_callback_mutex);
398 _port_connection_queue.push_back(new PortConnectData(a, b, conn));
399 pthread_mutex_unlock (&_port_callback_mutex);
402 void port_connect_add_remove_callback () {
403 pthread_mutex_lock (&_port_callback_mutex);
404 _port_change_flag = true;
405 pthread_mutex_unlock (&_port_callback_mutex);
408 bool valid_port (PortHandle port) const {
409 return std::find (_ports.begin (), _ports.end (), (ASIOBackendPort*)port) != _ports.end ();
412 ASIOBackendPort * find_port (const std::string& port_name) const {
413 for (std::vector<ASIOBackendPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
414 if ((*it)->name () == port_name) {
421 ASIOBackendPort * find_port_in (std::vector<ASIOBackendPort *> plist, const std::string& port_name) const {
422 for (std::vector<ASIOBackendPort*>::const_iterator it = plist.begin (); it != plist.end (); ++it) {
423 if ((*it)->name () == port_name) {
430 }; // class ASIOBackend
434 #endif /* __libbackend_asio_backend_h__ */