2 Copyright (C) 2000 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.
21 #ifndef __ardour_io_h__
22 #define __ardour_io_h__
27 #include <sigc++/signal.h>
28 #include <jack/jack.h>
30 #include <glibmm/thread.h>
32 #include <pbd/fastlog.h>
34 #include <pbd/stateful.h>
35 #include <pbd/controllable.h>
37 #include <ardour/ardour.h>
38 #include <ardour/utils.h>
39 #include <ardour/state_manager.h>
40 #include <ardour/curve.h>
41 #include <ardour/types.h>
42 #include <ardour/data_type.h>
43 #include <ardour/port_set.h>
44 #include <ardour/chan_count.h>
63 /** A collection of input and output ports with connections.
65 * An IO can contain ports of varying types, making routes/inserts/etc with
66 * varied combinations of types (eg MIDI and audio) possible.
68 class IO : public Stateful, public ARDOUR::StateManager
72 static const string state_node_name;
74 IO (Session&, string name,
75 int input_min = -1, int input_max = -1,
76 int output_min = -1, int output_max = -1,
77 DataType default_type = DataType::AUDIO);
81 ChanCount input_minimum() const { return _input_minimum; }
82 ChanCount input_maximum() const { return _input_maximum; }
83 ChanCount output_minimum() const { return _output_minimum; }
84 ChanCount output_maximum() const { return _output_maximum; }
86 void set_input_minimum (ChanCount n);
87 void set_input_maximum (ChanCount n);
88 void set_output_minimum (ChanCount n);
89 void set_output_maximum (ChanCount n);
91 // Do not write any new code using these
92 void set_input_minimum (int n);
93 void set_input_maximum (int n);
94 void set_output_minimum (int n);
95 void set_output_maximum (int n);
97 DataType default_type() const { return _default_type; }
99 const string& name() const { return _name; }
100 virtual int set_name (string str, void *src);
102 virtual void silence (jack_nframes_t, jack_nframes_t offset);
104 void pan (BufferSet& bufs, jack_nframes_t nframes, jack_nframes_t offset, gain_t gain_coeff);
105 void pan_automated (BufferSet& bufs, jack_nframes_t start_frame, jack_nframes_t end_frame, jack_nframes_t nframes, jack_nframes_t offset);
106 void collect_input (BufferSet& bufs, jack_nframes_t nframes, jack_nframes_t offset);
107 void deliver_output (BufferSet& bufs, jack_nframes_t nframes, jack_nframes_t offset);
108 void deliver_output_no_pan (BufferSet& bufs, jack_nframes_t nframes, jack_nframes_t offset);
109 void just_meter_input (jack_nframes_t start_frame, jack_nframes_t end_frame,
110 jack_nframes_t nframes, jack_nframes_t offset);
112 virtual ChanCount n_process_buffers () { return ChanCount::ZERO; }
114 virtual void set_gain (gain_t g, void *src);
115 void inc_gain (gain_t delta, void *src);
116 gain_t gain () const { return _desired_gain; }
117 virtual gain_t effective_gain () const;
119 Panner& panner() { return *_panner; }
120 PeakMeter& peak_meter() { return *_meter; }
122 int ensure_io (uint32_t, uint32_t, bool clear, void *src);
123 int ensure_io (const ChanCount& in, const ChanCount& out, bool clear, void *src);
125 int use_input_connection (Connection&, void *src);
126 int use_output_connection (Connection&, void *src);
128 Connection *input_connection() const { return _input_connection; }
129 Connection *output_connection() const { return _output_connection; }
131 int add_input_port (string source, void *src, DataType type = DataType::NIL);
132 int add_output_port (string destination, void *src, DataType type = DataType::NIL);
134 int remove_input_port (Port *, void *src);
135 int remove_output_port (Port *, void *src);
137 int set_input (Port *, void *src);
139 int connect_input (Port *our_port, string other_port, void *src);
140 int connect_output (Port *our_port, string other_port, void *src);
142 int disconnect_input (Port *our_port, string other_port, void *src);
143 int disconnect_output (Port *our_port, string other_port, void *src);
145 int disconnect_inputs (void *src);
146 int disconnect_outputs (void *src);
148 jack_nframes_t output_latency() const;
149 jack_nframes_t input_latency() const;
150 void set_port_latency (jack_nframes_t);
152 const PortSet& inputs() const { return _inputs; }
153 const PortSet& outputs() const { return _outputs; }
155 Port *output (uint32_t n) const {
156 if (n < _outputs.num_ports()) {
157 return _outputs.port(n);
163 Port *input (uint32_t n) const {
164 if (n < _inputs.num_ports()) {
165 return _inputs.port(n);
171 AudioPort* audio_input(uint32_t n) const;
172 AudioPort* audio_output(uint32_t n) const;
173 MidiPort* midi_input(uint32_t n) const;
174 MidiPort* midi_output(uint32_t n) const;
176 const ChanCount& n_inputs () const { return _inputs.count(); }
177 const ChanCount& n_outputs () const { return _outputs.count(); }
179 void attach_buffers(ChanCount ignored);
181 sigc::signal<void,IOChange,void*> input_changed;
182 sigc::signal<void,IOChange,void*> output_changed;
184 sigc::signal<void,void*> gain_changed;
185 sigc::signal<void,void*> name_changed;
187 virtual XMLNode& state (bool full);
188 XMLNode& get_state (void);
189 int set_state (const XMLNode&);
191 virtual UndoAction get_memento() const;
194 static int disable_connecting (void);
196 static int enable_connecting (void);
198 static int disable_ports (void);
200 static int enable_ports (void);
202 static int disable_panners (void);
204 static int reset_panners (void);
206 static sigc::signal<int> PortsLegal;
207 static sigc::signal<int> PannersLegal;
208 static sigc::signal<int> ConnectingLegal;
209 static sigc::signal<void,ChanCount> MoreChannels;
210 static sigc::signal<int> PortsCreated;
212 PBD::Controllable& gain_control() {
213 return _gain_control;
216 static void update_meters();
220 static sigc::signal<void> Meter;
221 static Glib::StaticMutex m_meter_signal_lock;
222 sigc::connection m_meter_connection;
228 void clear_automation ();
230 bool gain_automation_recording() const {
231 return (_gain_automation_curve.automation_state() & (Write|Touch));
234 bool gain_automation_playback() const {
235 return (_gain_automation_curve.automation_state() & Play) ||
236 ((_gain_automation_curve.automation_state() & Touch) &&
237 !_gain_automation_curve.touching());
240 virtual void set_gain_automation_state (AutoState);
241 AutoState gain_automation_state() const { return _gain_automation_curve.automation_state(); }
242 sigc::signal<void> gain_automation_state_changed;
244 virtual void set_gain_automation_style (AutoStyle);
245 AutoStyle gain_automation_style () const { return _gain_automation_curve.automation_style(); }
246 sigc::signal<void> gain_automation_style_changed;
248 static void set_automation_interval (jack_nframes_t frames) {
249 _automation_interval = frames;
252 static jack_nframes_t automation_interval() {
253 return _automation_interval;
256 virtual void transport_stopped (jack_nframes_t now);
257 virtual void automation_snapshot (jack_nframes_t now);
259 ARDOUR::Curve& gain_automation_curve () { return _gain_automation_curve; }
261 void start_gain_touch ();
262 void end_gain_touch ();
264 void start_pan_touch (uint32_t which);
265 void end_pan_touch (uint32_t which);
267 const PBD::ID& id() const { return _id; }
269 void defer_pan_reset ();
270 void allow_pan_reset ();
272 /* the session calls this for master outs before
273 anyone else. controls outs too, at some point.
276 XMLNode *pending_state_node;
277 int ports_became_legal ();
280 mutable Glib::Mutex io_lock;
285 BufferSet* _output_buffers; //< Set directly to our output port buffers
287 gain_t _effective_gain;
288 gain_t _desired_gain;
289 Glib::Mutex declick_lock;
294 Connection* _input_connection;
295 Connection* _output_connection;
297 bool no_panner_reset;
298 XMLNode* deferred_state;
299 DataType _default_type;
301 virtual void set_deferred_state() {}
303 void reset_panner ();
305 virtual uint32_t pans_required() const
306 { return _inputs.count().get(DataType::AUDIO); }
308 struct GainControllable : public PBD::Controllable {
309 GainControllable (IO& i) : io (i) {}
311 void set_value (float val);
312 float get_value (void) const;
317 GainControllable _gain_control;
319 /* state management */
321 Change restore_state (State&);
322 StateManager::State* state_factory (std::string why) const;
326 jack_nframes_t last_automation_snapshot;
327 static jack_nframes_t _automation_interval;
329 AutoState _gain_automation_state;
330 AutoStyle _gain_automation_style;
332 bool apply_gain_automation;
333 Curve _gain_automation_curve;
335 int save_automation (const string&);
336 int load_automation (const string&);
338 Glib::Mutex automation_lock;
340 /* AudioTrack::deprecated_use_diskstream_connections() needs these */
342 int set_inputs (const string& str);
343 int set_outputs (const string& str);
345 static bool connecting_legal;
346 static bool ports_legal;
348 BufferSet& output_buffers() { return *_output_buffers; }
352 /* are these the best variable names ever, or what? */
354 sigc::connection input_connection_configuration_connection;
355 sigc::connection output_connection_configuration_connection;
356 sigc::connection input_connection_connection_connection;
357 sigc::connection output_connection_connection_connection;
359 static bool panners_legal;
361 int connecting_became_legal ();
362 int panners_became_legal ();
363 sigc::connection connection_legal_c;
364 sigc::connection port_legal_c;
365 sigc::connection panner_legal_c;
367 ChanCount _input_minimum;
368 ChanCount _input_maximum;
369 ChanCount _output_minimum;
370 ChanCount _output_maximum;
373 static int parse_io_string (const string&, vector<string>& chns);
375 static int parse_gain_string (const string&, vector<string>& chns);
377 int set_sources (vector<string>&, void *src, bool add);
378 int set_destinations (vector<string>&, void *src, bool add);
380 int ensure_inputs (uint32_t, bool clear, bool lockit, void *src);
381 int ensure_outputs (uint32_t, bool clear, bool lockit, void *src);
383 void drop_input_connection ();
384 void drop_output_connection ();
386 void input_connection_configuration_changed ();
387 void input_connection_connection_changed (int);
388 void output_connection_configuration_changed ();
389 void output_connection_connection_changed (int);
391 int create_ports (const XMLNode&);
392 int make_connections (const XMLNode&);
394 void setup_peak_meters ();
397 bool ensure_inputs_locked (uint32_t, bool clear, void *src);
398 bool ensure_outputs_locked (uint32_t, bool clear, void *src);
400 int32_t find_input_port_hole ();
401 int32_t find_output_port_hole ();
404 } // namespace ARDOUR
406 #endif /*__ardour_io_h__ */