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>
35 #include <midi++/controllable.h>
37 #include <ardour/ardour.h>
38 #include <ardour/stateful.h>
39 #include <ardour/utils.h>
40 #include <ardour/state_manager.h>
41 #include <ardour/curve.h>
56 class IO : public Stateful, public ARDOUR::StateManager
60 static const string state_node_name;
62 IO (Session&, string name,
63 int input_min = -1, int input_max = -1,
64 int output_min = -1, int output_max = -1);
68 int input_minimum() const { return _input_minimum; }
69 int input_maximum() const { return _input_maximum; }
70 int output_minimum() const { return _output_minimum; }
71 int output_maximum() const { return _output_maximum; }
73 void set_input_minimum (int n);
74 void set_input_maximum (int n);
75 void set_output_minimum (int n);
76 void set_output_maximum (int n);
78 const string& name() const { return _name; }
79 virtual int set_name (string str, void *src);
81 virtual void silence (jack_nframes_t, jack_nframes_t offset);
83 void pan (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset, gain_t gain_coeff);
84 void pan_automated (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t start_frame, jack_nframes_t end_frame,
85 jack_nframes_t nframes, jack_nframes_t offset);
86 void collect_input (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
87 void deliver_output (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
88 void deliver_output_no_pan (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
89 void just_meter_input (jack_nframes_t start_frame, jack_nframes_t end_frame,
90 jack_nframes_t nframes, jack_nframes_t offset);
92 virtual uint32_t n_process_buffers () { return 0; }
94 virtual void set_gain (gain_t g, void *src);
95 void inc_gain (gain_t delta, void *src);
96 gain_t gain () const { return _desired_gain; }
97 virtual gain_t effective_gain () const;
99 Panner& panner() { return *_panner; }
101 int ensure_io (uint32_t, uint32_t, bool clear, void *src);
103 int use_input_connection (Connection&, void *src);
104 int use_output_connection (Connection&, void *src);
106 Connection *input_connection() const { return _input_connection; }
107 Connection *output_connection() const { return _output_connection; }
109 int add_input_port (string source, void *src);
110 int add_output_port (string destination, void *src);
112 int remove_input_port (Port *, void *src);
113 int remove_output_port (Port *, void *src);
115 int set_input (Port *, void *src);
117 int connect_input (Port *our_port, string other_port, void *src);
118 int connect_output (Port *our_port, string other_port, void *src);
120 int disconnect_input (Port *our_port, string other_port, void *src);
121 int disconnect_output (Port *our_port, string other_port, void *src);
123 int disconnect_inputs (void *src);
124 int disconnect_outputs (void *src);
126 jack_nframes_t output_latency() const;
127 jack_nframes_t input_latency() const;
128 void set_port_latency (jack_nframes_t);
130 Port *output (uint32_t n) const {
138 Port *input (uint32_t n) const {
146 uint32_t n_inputs () const { return _ninputs; }
147 uint32_t n_outputs () const { return _noutputs; }
149 sigc::signal<void,IOChange,void*> input_changed;
150 sigc::signal<void,IOChange,void*> output_changed;
152 sigc::signal<void,void*> gain_changed;
153 sigc::signal<void,void*> name_changed;
155 virtual XMLNode& state (bool full);
156 XMLNode& get_state (void);
157 int set_state (const XMLNode&);
159 virtual UndoAction get_memento() const;
162 static int disable_connecting (void);
164 static int enable_connecting (void);
166 static int disable_ports (void);
168 static int enable_ports (void);
170 static int disable_panners (void);
172 static int reset_panners (void);
174 static sigc::signal<int> PortsLegal;
175 static sigc::signal<int> PannersLegal;
176 static sigc::signal<int> ConnectingLegal;
177 static sigc::signal<void,uint32_t> MoreOutputs;
178 static sigc::signal<int> PortsCreated;
182 void set_midi_to_gain_function (gain_t (*function)(double val)) {
183 _midi_gain_control.midi_to_gain = function;
186 void set_gain_to_midi_function (double (*function)(gain_t gain)) {
187 _midi_gain_control.gain_to_midi = function;
190 MIDI::Controllable& midi_gain_control() {
191 return _midi_gain_control;
194 virtual void reset_midi_control (MIDI::Port*, bool on);
196 virtual void send_all_midi_feedback ();
197 virtual MIDI::byte* write_midi_feedback (MIDI::byte*, int32_t& bufsize);
201 float peak_input_power (uint32_t n) {
202 if (n < std::max (_ninputs, _noutputs)) {
203 return _visible_peak_power[n];
205 return minus_infinity();
209 static void update_meters();
213 static sigc::signal<void> Meter;
214 static Glib::StaticMutex m_meter_signal_lock;
215 sigc::connection m_meter_connection;
221 void clear_automation ();
223 bool gain_automation_recording() const {
224 return (_gain_automation_curve.automation_state() & (Write|Touch));
227 bool gain_automation_playback() const {
228 return (_gain_automation_curve.automation_state() & Play) ||
229 ((_gain_automation_curve.automation_state() & Touch) &&
230 !_gain_automation_curve.touching());
233 virtual void set_gain_automation_state (AutoState);
234 AutoState gain_automation_state() const { return _gain_automation_curve.automation_state(); }
235 sigc::signal<void> gain_automation_state_changed;
237 virtual void set_gain_automation_style (AutoStyle);
238 AutoStyle gain_automation_style () const { return _gain_automation_curve.automation_style(); }
239 sigc::signal<void> gain_automation_style_changed;
241 static void set_automation_interval (jack_nframes_t frames) {
242 _automation_interval = frames;
245 static jack_nframes_t automation_interval() {
246 return _automation_interval;
249 virtual void transport_stopped (jack_nframes_t now);
250 virtual void automation_snapshot (jack_nframes_t now);
252 ARDOUR::Curve& gain_automation_curve () { return _gain_automation_curve; }
254 void start_gain_touch ();
255 void end_gain_touch ();
257 void start_pan_touch (uint32_t which);
258 void end_pan_touch (uint32_t which);
260 id_t id() const { return _id; }
262 void defer_pan_reset ();
263 void allow_pan_reset ();
265 /* the session calls this for master outs before
266 anyone else. controls outs too, at some point.
269 XMLNode *pending_state_node;
270 int ports_became_legal ();
273 mutable Glib::Mutex io_lock;
279 gain_t _effective_gain;
280 gain_t _desired_gain;
281 Glib::Mutex declick_lock;
282 vector<Port*> _outputs;
283 vector<Port*> _inputs;
284 vector<float> _peak_power;
285 vector<float> _visible_peak_power;
287 Connection* _input_connection;
288 Connection* _output_connection;
290 bool no_panner_reset;
291 XMLNode* deferred_state;
293 virtual void set_deferred_state() {}
295 void reset_peak_meters();
296 void reset_panner ();
298 virtual uint32_t pans_required() const { return _ninputs; }
300 static void apply_declick (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes,
301 gain_t initial, gain_t target, bool invert_polarity);
303 struct MIDIGainControl : public MIDI::Controllable {
304 MIDIGainControl (IO&, MIDI::Port *);
305 void set_value (float);
307 void send_feedback (gain_t);
308 MIDI::byte* write_feedback (MIDI::byte* buf, int32_t& bufsize, gain_t val, bool force = false);
312 MIDI::byte last_written;
314 gain_t (*midi_to_gain) (double val);
315 double (*gain_to_midi) (gain_t gain);
318 MIDIGainControl _midi_gain_control;
320 /* state management */
322 Change restore_state (State&);
323 StateManager::State* state_factory (std::string why) const;
325 bool get_midi_node_info (XMLNode * node, MIDI::eventType & ev, MIDI::channel_t & chan, MIDI::byte & additional);
326 bool set_midi_node_info (XMLNode * node, MIDI::eventType ev, MIDI::channel_t chan, MIDI::byte additional);
330 jack_nframes_t last_automation_snapshot;
331 static jack_nframes_t _automation_interval;
333 AutoState _gain_automation_state;
334 AutoStyle _gain_automation_style;
336 bool apply_gain_automation;
337 Curve _gain_automation_curve;
339 int save_automation (const string&);
340 int load_automation (const string&);
342 Glib::Mutex automation_lock;
344 /* AudioTrack::deprecated_use_diskstream_connections() needs these */
346 int set_inputs (const string& str);
347 int set_outputs (const string& str);
349 static bool connecting_legal;
350 static bool ports_legal;
357 /* are these the best variable names ever, or what? */
359 sigc::connection input_connection_configuration_connection;
360 sigc::connection output_connection_configuration_connection;
361 sigc::connection input_connection_connection_connection;
362 sigc::connection output_connection_connection_connection;
364 static bool panners_legal;
366 int connecting_became_legal ();
367 int panners_became_legal ();
368 sigc::connection connection_legal_c;
369 sigc::connection port_legal_c;
370 sigc::connection panner_legal_c;
378 static int parse_io_string (const string&, vector<string>& chns);
380 static int parse_gain_string (const string&, vector<string>& chns);
382 int set_sources (vector<string>&, void *src, bool add);
383 int set_destinations (vector<string>&, void *src, bool add);
385 int ensure_inputs (uint32_t, bool clear, bool lockit, void *src);
386 int ensure_outputs (uint32_t, bool clear, bool lockit, void *src);
388 void drop_input_connection ();
389 void drop_output_connection ();
391 void input_connection_configuration_changed ();
392 void input_connection_connection_changed (int);
393 void output_connection_configuration_changed ();
394 void output_connection_connection_changed (int);
396 int create_ports (const XMLNode&);
397 int make_connections (const XMLNode&);
399 void setup_peak_meters ();
402 bool ensure_inputs_locked (uint32_t, bool clear, void *src);
403 bool ensure_outputs_locked (uint32_t, bool clear, void *src);
405 int32_t find_input_port_hole ();
406 int32_t find_output_port_hole ();
409 }; /* namespace ARDOUR */
411 #endif /*__ardour_io_h__ */