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 <pbd/lockmonitor.h>
31 #include <pbd/fastlog.h>
33 #include <pbd/atomic.h>
34 #include <midi++/controllable.h>
36 #include <ardour/ardour.h>
37 #include <ardour/stateful.h>
38 #include <ardour/utils.h>
39 #include <ardour/state_manager.h>
40 #include <ardour/curve.h>
55 class IO : public Stateful, public ARDOUR::StateManager
59 static const string state_node_name;
61 IO (Session&, string name,
62 int input_min = -1, int input_max = -1,
63 int output_min = -1, int output_max = -1);
67 int input_minimum() const { return _input_minimum; }
68 int input_maximum() const { return _input_maximum; }
69 int output_minimum() const { return _output_minimum; }
70 int output_maximum() const { return _output_maximum; }
72 void set_input_minimum (int n);
73 void set_input_maximum (int n);
74 void set_output_minimum (int n);
75 void set_output_maximum (int n);
77 const string& name() const { return _name; }
78 virtual int set_name (string str, void *src);
80 virtual void silence (jack_nframes_t, jack_nframes_t offset);
82 void pan (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset, gain_t gain_coeff);
83 void pan_automated (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t start_frame, jack_nframes_t end_frame,
84 jack_nframes_t nframes, jack_nframes_t offset);
85 void collect_input (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
86 void deliver_output (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
87 void deliver_output_no_pan (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
88 void just_meter_input (jack_nframes_t start_frame, jack_nframes_t end_frame,
89 jack_nframes_t nframes, jack_nframes_t offset);
91 virtual uint32_t n_process_buffers () { return 0; }
93 virtual void set_gain (gain_t g, void *src);
94 void inc_gain (gain_t delta, void *src);
95 gain_t gain () const { return _desired_gain; }
96 virtual gain_t effective_gain () const;
98 Panner& panner() { return *_panner; }
100 int ensure_io (uint32_t, uint32_t, bool clear, void *src);
102 int use_input_connection (Connection&, void *src);
103 int use_output_connection (Connection&, void *src);
105 Connection *input_connection() const { return _input_connection; }
106 Connection *output_connection() const { return _output_connection; }
108 int add_input_port (string source, void *src);
109 int add_output_port (string destination, void *src);
111 int remove_input_port (Port *, void *src);
112 int remove_output_port (Port *, void *src);
114 int set_input (Port *, void *src);
116 int connect_input (Port *our_port, string other_port, void *src);
117 int connect_output (Port *our_port, string other_port, void *src);
119 int disconnect_input (Port *our_port, string other_port, void *src);
120 int disconnect_output (Port *our_port, string other_port, void *src);
122 int disconnect_inputs (void *src);
123 int disconnect_outputs (void *src);
125 jack_nframes_t output_latency() const;
126 jack_nframes_t input_latency() const;
127 void set_port_latency (jack_nframes_t);
129 Port *output (uint32_t n) const {
137 Port *input (uint32_t n) const {
145 uint32_t n_inputs () const { return _ninputs; }
146 uint32_t n_outputs () const { return _noutputs; }
148 sigc::signal<void,IOChange,void*> input_changed;
149 sigc::signal<void,IOChange,void*> output_changed;
151 sigc::signal<void,void*> gain_changed;
152 sigc::signal<void,void*> name_changed;
154 virtual XMLNode& state (bool full);
155 XMLNode& get_state (void);
156 int set_state (const XMLNode&);
158 virtual UndoAction get_memento() const;
161 static int disable_connecting (void);
163 static int enable_connecting (void);
165 static int disable_ports (void);
167 static int enable_ports (void);
169 static int disable_panners (void);
171 static int reset_panners (void);
173 static sigc::signal<int> PortsLegal;
174 static sigc::signal<int> PannersLegal;
175 static sigc::signal<int> ConnectingLegal;
176 static sigc::signal<void,uint32_t> MoreOutputs;
177 static sigc::signal<int> PortsCreated;
181 void set_midi_to_gain_function (gain_t (*function)(double val)) {
182 _midi_gain_control.midi_to_gain = function;
185 void set_gain_to_midi_function (double (*function)(gain_t gain)) {
186 _midi_gain_control.gain_to_midi = function;
189 MIDI::Controllable& midi_gain_control() {
190 return _midi_gain_control;
193 virtual void reset_midi_control (MIDI::Port*, bool on);
195 virtual void send_all_midi_feedback ();
196 virtual MIDI::byte* write_midi_feedback (MIDI::byte*, int32_t& bufsize);
200 float peak_input_power (uint32_t n) {
201 if (n < std::max(_ninputs, _noutputs)) {
202 float x = _stored_peak_power[n];
204 return 20 * fast_log10(x);
206 return minus_infinity();
209 return minus_infinity();
213 static sigc::signal<void> GrabPeakPower;
217 void clear_automation ();
219 bool gain_automation_recording() const {
220 return (_gain_automation_curve.automation_state() & (Write|Touch));
223 bool gain_automation_playback() const {
224 return (_gain_automation_curve.automation_state() & Play) ||
225 ((_gain_automation_curve.automation_state() & Touch) &&
226 !_gain_automation_curve.touching());
229 virtual void set_gain_automation_state (AutoState);
230 AutoState gain_automation_state() const { return _gain_automation_curve.automation_state(); }
231 sigc::signal<void> gain_automation_state_changed;
233 virtual void set_gain_automation_style (AutoStyle);
234 AutoStyle gain_automation_style () const { return _gain_automation_curve.automation_style(); }
235 sigc::signal<void> gain_automation_style_changed;
237 static void set_automation_interval (jack_nframes_t frames) {
238 _automation_interval = frames;
241 static jack_nframes_t automation_interval() {
242 return _automation_interval;
245 virtual void transport_stopped (jack_nframes_t now);
246 virtual void automation_snapshot (jack_nframes_t now);
248 ARDOUR::Curve& gain_automation_curve () { return _gain_automation_curve; }
250 void start_gain_touch ();
251 void end_gain_touch ();
253 void start_pan_touch (uint32_t which);
254 void end_pan_touch (uint32_t which);
256 id_t id() const { return _id; }
258 void defer_pan_reset ();
259 void allow_pan_reset ();
261 /* the session calls this for master outs before
262 anyone else. controls outs too, at some point.
265 XMLNode *pending_state_node;
266 int ports_became_legal ();
269 mutable PBD::Lock io_lock;
275 gain_t _effective_gain;
276 gain_t _desired_gain;
277 PBD::NonBlockingLock declick_lock;
278 vector<Port*> _outputs;
279 vector<Port*> _inputs;
280 vector<float> _peak_power;
281 vector<float> _stored_peak_power;
283 Connection* _input_connection;
284 Connection* _output_connection;
286 bool no_panner_reset;
287 XMLNode* deferred_state;
289 virtual void set_deferred_state() {}
291 void reset_peak_meters();
292 void reset_panner ();
294 virtual uint32_t pans_required() const { return _ninputs; }
296 static void apply_declick (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes,
297 gain_t initial, gain_t target, bool invert_polarity);
299 struct MIDIGainControl : public MIDI::Controllable {
300 MIDIGainControl (IO&, MIDI::Port *);
301 void set_value (float);
303 void send_feedback (gain_t);
304 MIDI::byte* write_feedback (MIDI::byte* buf, int32_t& bufsize, gain_t val, bool force = false);
308 MIDI::byte last_written;
310 gain_t (*midi_to_gain) (double val);
311 double (*gain_to_midi) (gain_t gain);
314 MIDIGainControl _midi_gain_control;
316 /* state management */
318 Change restore_state (State&);
319 StateManager::State* state_factory (std::string why) const;
320 void send_state_changed();
322 bool get_midi_node_info (XMLNode * node, MIDI::eventType & ev, MIDI::channel_t & chan, MIDI::byte & additional);
323 bool set_midi_node_info (XMLNode * node, MIDI::eventType ev, MIDI::channel_t chan, MIDI::byte additional);
327 jack_nframes_t last_automation_snapshot;
328 static jack_nframes_t _automation_interval;
330 AutoState _gain_automation_state;
331 AutoStyle _gain_automation_style;
333 bool apply_gain_automation;
334 Curve _gain_automation_curve;
336 int save_automation (const string&);
337 int load_automation (const string&);
339 PBD::NonBlockingLock automation_lock;
341 /* AudioTrack::deprecated_use_diskstream_connections() needs these */
343 int set_inputs (const string& str);
344 int set_outputs (const string& str);
346 static bool connecting_legal;
347 static bool ports_legal;
354 /* are these the best variable names ever, or what? */
356 sigc::connection input_connection_configuration_connection;
357 sigc::connection output_connection_configuration_connection;
358 sigc::connection input_connection_connection_connection;
359 sigc::connection output_connection_connection_connection;
361 static bool panners_legal;
363 int connecting_became_legal ();
364 int panners_became_legal ();
365 sigc::connection connection_legal_c;
366 sigc::connection port_legal_c;
367 sigc::connection panner_legal_c;
375 static int parse_io_string (const string&, vector<string>& chns);
377 static int parse_gain_string (const string&, vector<string>& chns);
379 int set_sources (vector<string>&, void *src, bool add);
380 int set_destinations (vector<string>&, void *src, bool add);
382 int ensure_inputs (uint32_t, bool clear, bool lockit, void *src);
383 int ensure_outputs (uint32_t, bool clear, bool lockit, void *src);
385 void drop_input_connection ();
386 void drop_output_connection ();
388 void input_connection_configuration_changed ();
389 void input_connection_connection_changed (int);
390 void output_connection_configuration_changed ();
391 void output_connection_connection_changed (int);
393 int create_ports (const XMLNode&);
394 int make_connections (const XMLNode&);
396 void setup_peak_meters ();
397 void grab_peak_power ();
399 bool ensure_inputs_locked (uint32_t, bool clear, void *src);
400 bool ensure_outputs_locked (uint32_t, bool clear, void *src);
402 int32_t find_input_port_hole ();
403 int32_t find_output_port_hole ();
406 }; /* namespace ARDOUR */
408 #endif /*__ardour_io_h__ */