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/statefuldestructible.h>
35 #include <pbd/controllable.h>
37 #include <ardour/ardour.h>
38 #include <ardour/utils.h>
39 #include <ardour/curve.h>
40 #include <ardour/types.h>
41 #include <ardour/data_type.h>
56 /** A collection of input and output ports with connections.
58 * An IO can contain ports of varying types, making routes/inserts/etc with
59 * varied combinations of types (eg MIDI and audio) possible.
61 class IO : public PBD::StatefulDestructible
65 static const string state_node_name;
67 IO (Session&, string name,
68 int input_min = -1, int input_max = -1,
69 int output_min = -1, int output_max = -1,
70 DataType default_type = DataType::AUDIO);
72 IO (Session&, const XMLNode&, DataType default_type = DataType::AUDIO);
76 int input_minimum() const { return _input_minimum; }
77 int input_maximum() const { return _input_maximum; }
78 int output_minimum() const { return _output_minimum; }
79 int output_maximum() const { return _output_maximum; }
81 void set_input_minimum (int n);
82 void set_input_maximum (int n);
83 void set_output_minimum (int n);
84 void set_output_maximum (int n);
86 DataType default_type() const { return _default_type; }
88 const string& name() const { return _name; }
89 virtual int set_name (string str, void *src);
91 virtual void silence (nframes_t, nframes_t offset);
93 // These should be moved in to a separate object that manipulates an IO
95 void pan (vector<Sample*>& bufs, uint32_t nbufs, nframes_t nframes, nframes_t offset, gain_t gain_coeff);
96 void pan_automated (vector<Sample*>& bufs, uint32_t nbufs, nframes_t start_frame, nframes_t end_frame,
97 nframes_t nframes, nframes_t offset);
98 void collect_input (vector<Sample*>&, uint32_t nbufs, nframes_t nframes, nframes_t offset);
99 void deliver_output (vector<Sample*>&, uint32_t nbufs, nframes_t nframes, nframes_t offset);
100 void deliver_output_no_pan (vector<Sample*>&, uint32_t nbufs, nframes_t nframes, nframes_t offset);
101 void just_meter_input (nframes_t start_frame, nframes_t end_frame,
102 nframes_t nframes, nframes_t offset);
104 virtual uint32_t n_process_buffers () { return 0; }
106 virtual void set_gain (gain_t g, void *src);
107 void inc_gain (gain_t delta, void *src);
108 gain_t gain () const { return _desired_gain; }
109 virtual gain_t effective_gain () const;
111 Panner& panner() { return *_panner; }
113 int ensure_io (uint32_t, uint32_t, bool clear, void *src);
115 int use_input_connection (Connection&, void *src);
116 int use_output_connection (Connection&, void *src);
118 Connection *input_connection() const { return _input_connection; }
119 Connection *output_connection() const { return _output_connection; }
121 int add_input_port (string source, void *src, DataType type = DataType::NIL);
122 int add_output_port (string destination, void *src, DataType type = DataType::NIL);
124 int remove_input_port (Port *, void *src);
125 int remove_output_port (Port *, void *src);
127 int set_input (Port *, void *src);
129 int connect_input (Port *our_port, string other_port, void *src);
130 int connect_output (Port *our_port, string other_port, void *src);
132 int disconnect_input (Port *our_port, string other_port, void *src);
133 int disconnect_output (Port *our_port, string other_port, void *src);
135 int disconnect_inputs (void *src);
136 int disconnect_outputs (void *src);
138 nframes_t output_latency() const;
139 nframes_t input_latency() const;
140 void set_port_latency (nframes_t);
142 Port *output (uint32_t n) const {
150 Port *input (uint32_t n) const {
158 uint32_t n_inputs () const { return _ninputs; }
159 uint32_t n_outputs () const { return _noutputs; }
161 sigc::signal<void,IOChange,void*> input_changed;
162 sigc::signal<void,IOChange,void*> output_changed;
164 sigc::signal<void,void*> gain_changed;
165 sigc::signal<void,void*> name_changed;
167 virtual XMLNode& state (bool full);
168 XMLNode& get_state (void);
169 int set_state (const XMLNode&);
171 static int disable_connecting (void);
172 static int enable_connecting (void);
173 static int disable_ports (void);
174 static int enable_ports (void);
175 static int disable_panners (void);
176 static int reset_panners (void);
178 static sigc::signal<int> PortsLegal;
179 static sigc::signal<int> PannersLegal;
180 static sigc::signal<int> ConnectingLegal;
181 static sigc::signal<void,uint32_t> MoreOutputs;
182 static sigc::signal<int> PortsCreated;
184 PBD::Controllable& gain_control() {
185 return _gain_control;
190 float peak_input_power (uint32_t n) {
191 if (n < std::max (_ninputs, _noutputs)) {
192 return _visible_peak_power[n];
194 return minus_infinity();
198 static void update_meters();
202 static sigc::signal<void> Meter;
203 static Glib::StaticMutex m_meter_signal_lock;
204 sigc::connection m_meter_connection;
210 static void set_automation_interval (jack_nframes_t frames) {
211 _automation_interval = frames;
214 static jack_nframes_t automation_interval() {
215 return _automation_interval;
218 void clear_automation ();
220 bool gain_automation_recording() const {
221 return (_gain_automation_curve.automation_state() & (Write|Touch));
224 bool gain_automation_playback() const {
225 return (_gain_automation_curve.automation_state() & Play) ||
226 ((_gain_automation_curve.automation_state() & Touch) &&
227 !_gain_automation_curve.touching());
230 virtual void set_gain_automation_state (AutoState);
231 AutoState gain_automation_state() const { return _gain_automation_curve.automation_state(); }
232 sigc::signal<void> gain_automation_state_changed;
234 virtual void set_gain_automation_style (AutoStyle);
235 AutoStyle gain_automation_style () const { return _gain_automation_curve.automation_style(); }
236 sigc::signal<void> gain_automation_style_changed;
238 virtual void transport_stopped (nframes_t now);
239 void automation_snapshot (nframes_t now);
241 ARDOUR::Curve& gain_automation_curve () { return _gain_automation_curve; }
243 void start_gain_touch ();
244 void end_gain_touch ();
246 void start_pan_touch (uint32_t which);
247 void end_pan_touch (uint32_t which);
249 void defer_pan_reset ();
250 void allow_pan_reset ();
252 /* the session calls this for master outs before
253 anyone else. controls outs too, at some point.
256 XMLNode *pending_state_node;
257 int ports_became_legal ();
260 mutable Glib::Mutex io_lock;
266 gain_t _effective_gain;
267 gain_t _desired_gain;
268 Glib::Mutex declick_lock;
269 vector<Port*> _outputs;
270 vector<Port*> _inputs;
271 vector<float> _peak_power;
272 vector<float> _visible_peak_power;
274 Connection* _input_connection;
275 Connection* _output_connection;
276 bool no_panner_reset;
277 XMLNode* deferred_state;
278 DataType _default_type;
279 bool _ignore_gain_on_deliver;
282 virtual void set_deferred_state() {}
284 void reset_peak_meters();
285 void reset_panner ();
287 virtual uint32_t pans_required() const { return _ninputs; }
289 static void apply_declick (vector<Sample*>&, uint32_t nbufs, nframes_t nframes,
290 gain_t initial, gain_t target, bool invert_polarity);
292 struct GainControllable : public PBD::Controllable {
293 GainControllable (std::string name, IO& i) : Controllable (name), io (i) {}
295 void set_value (float val);
296 float get_value (void) const;
301 GainControllable _gain_control;
303 nframes_t last_automation_snapshot;
304 static nframes_t _automation_interval;
306 AutoState _gain_automation_state;
307 AutoStyle _gain_automation_style;
309 bool apply_gain_automation;
310 Curve _gain_automation_curve;
312 Glib::Mutex automation_lock;
314 virtual int set_automation_state (const XMLNode&);
315 virtual XMLNode& get_automation_state ();
316 virtual int load_automation (std::string path);
318 /* AudioTrack::deprecated_use_diskstream_connections() needs these */
320 int set_inputs (const string& str);
321 int set_outputs (const string& str);
323 static bool connecting_legal;
324 static bool ports_legal;
331 /* are these the best variable names ever, or what? */
333 sigc::connection input_connection_configuration_connection;
334 sigc::connection output_connection_configuration_connection;
335 sigc::connection input_connection_connection_connection;
336 sigc::connection output_connection_connection_connection;
338 static bool panners_legal;
340 int connecting_became_legal ();
341 int panners_became_legal ();
342 sigc::connection connection_legal_c;
343 sigc::connection port_legal_c;
344 sigc::connection panner_legal_c;
352 static int parse_io_string (const string&, vector<string>& chns);
354 static int parse_gain_string (const string&, vector<string>& chns);
356 int set_sources (vector<string>&, void *src, bool add);
357 int set_destinations (vector<string>&, void *src, bool add);
359 int ensure_inputs (uint32_t, bool clear, bool lockit, void *src);
360 int ensure_outputs (uint32_t, bool clear, bool lockit, void *src);
362 void drop_input_connection ();
363 void drop_output_connection ();
365 void input_connection_configuration_changed ();
366 void input_connection_connection_changed (int);
367 void output_connection_configuration_changed ();
368 void output_connection_connection_changed (int);
370 int create_ports (const XMLNode&);
371 int make_connections (const XMLNode&);
373 void setup_peak_meters ();
376 bool ensure_inputs_locked (uint32_t, bool clear, void *src);
377 bool ensure_outputs_locked (uint32_t, bool clear, void *src);
379 int32_t find_input_port_hole ();
380 int32_t find_output_port_hole ();
383 } // namespace ARDOUR
385 #endif /*__ardour_io_h__ */