2 Copyright (C) 1998-2006 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.
25 #include "pbd/error.h"
26 #include "pbd/controllable_descriptor.h"
27 #include "pbd/xml++.h"
28 #include "pbd/stacktrace.h"
30 #include "midi++/types.h" // Added by JE - 06-01-2009. All instances of 'byte' changed to 'MIDI::byte' (for clarification)
31 #include "midi++/port.h"
32 #include "midi++/channel.h"
34 #include "ardour/automation_control.h"
35 #include "ardour/midi_ui.h"
36 #include "ardour/utils.h"
38 #include "midicontrollable.h"
39 #include "generic_midi_control_protocol.h"
44 using namespace ARDOUR;
46 MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, Port& p, bool m)
53 _learned = false; /* from URI */
55 last_value = 0; // got a better idea ?
56 last_controllable_value = 0.0f;
58 _control_description = "MIDI Control: none";
59 control_additional = (MIDI::byte) -1;
60 feedback = true; // for now
63 MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, Port& p, Controllable& c, bool m)
69 set_controllable (&c);
71 _learned = true; /* from controllable */
73 last_value = 0; // got a better idea ?
74 last_controllable_value = 0.0f;
76 _control_description = "MIDI Control: none";
77 control_additional = (MIDI::byte) -1;
78 feedback = true; // for now
81 MIDIControllable::~MIDIControllable ()
83 drop_external_control ();
87 MIDIControllable::init (const std::string& s)
91 _descriptor = new ControllableDescriptor;
92 return _descriptor->set (s);
96 MIDIControllable::midi_forget ()
98 /* stop listening for incoming messages, but retain
99 our existing event + type information.
102 midi_sense_connection[0].disconnect ();
103 midi_sense_connection[1].disconnect ();
104 midi_learn_connection.disconnect ();
108 MIDIControllable::drop_external_control ()
112 control_additional = (MIDI::byte) -1;
116 MIDIControllable::set_controllable (Controllable* c)
118 if (c == controllable) {
122 controllable_death_connection.disconnect ();
127 last_controllable_value = controllable->get_value();
129 last_controllable_value = 0.0f; // is there a better value?
133 controllable->Destroyed.connect (controllable_death_connection, MISSING_INVALIDATOR,
134 boost::bind (&MIDIControllable::drop_controllable, this),
135 MidiControlUI::instance());
140 MIDIControllable::midi_rebind (channel_t c)
143 bind_midi (c, control_type, control_additional);
150 MIDIControllable::learn_about_external_control ()
152 drop_external_control ();
153 _port.parser()->any.connect_same_thread (midi_learn_connection, boost::bind (&MIDIControllable::midi_receiver, this, _1, _2, _3));
157 MIDIControllable::stop_learning ()
159 midi_learn_connection.disconnect ();
163 MIDIControllable::control_to_midi (float val)
165 if (controllable->is_gain_like()) {
166 return gain_to_slider_position (val) * max_value_for_type ();
169 float control_min = controllable->lower ();
170 float control_max = controllable->upper ();
171 const float control_range = control_max - control_min;
173 if (controllable->is_toggle()) {
174 if (val >= (control_min + (control_range/2.0f))) {
175 return max_value_for_type();
181 return (val - control_min) / control_range * max_value_for_type ();
185 MIDIControllable::midi_to_control (int val)
187 /* fiddle with MIDI value so that we get an odd number of integer steps
188 and can thus represent "middle" precisely as 0.5. this maps to
192 float fv = (val == 0 ? 0 : float (val - 1) / (max_value_for_type() - 1));
194 if (controllable->is_gain_like()) {
195 return slider_position_to_gain (fv);
198 float control_min = controllable->lower ();
199 float control_max = controllable->upper ();
200 const float control_range = control_max - control_min;
202 return (fv * control_range) + control_min;
206 MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
208 midi_sense_note (p, tb, true);
212 MIDIControllable::midi_sense_note_off (Parser &p, EventTwoBytes *tb)
214 midi_sense_note (p, tb, false);
218 MIDIControllable::lookup_controllable()
224 boost::shared_ptr<Controllable> c = _surface->lookup_controllable (*_descriptor);
230 set_controllable (c.get ());
236 MIDIControllable::drop_controllable ()
238 set_controllable (0);
242 MIDIControllable::midi_sense_note (Parser &, EventTwoBytes *msg, bool /*is_on*/)
245 if (lookup_controllable()) {
250 if (!controllable->is_toggle()) {
251 if (control_additional == msg->note_number) {
252 controllable->set_value (midi_to_control (msg->velocity));
255 if (control_additional == msg->note_number) {
256 controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
260 last_value = (MIDI::byte) (controllable->get_value() * 127.0); // to prevent feedback fights
264 MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
267 if (lookup_controllable ()) {
272 assert (controllable);
274 if (controllable->touching()) {
275 return; // to prevent feedback fights when e.g. dragging a UI slider
278 if (control_additional == msg->controller_number) {
280 if (!controllable->is_toggle()) {
282 float new_value = msg->value;
283 float max_value = max(last_controllable_value, new_value);
284 float min_value = min(last_controllable_value, new_value);
285 float range = max_value - min_value;
286 float threshold = (float) _surface->threshold ();
288 bool const in_sync = (
290 controllable->get_value() <= midi_to_control(max_value) &&
291 controllable->get_value() >= midi_to_control(min_value)
294 /* If the surface is not motorised, we try to prevent jumps when
295 the MIDI controller and controllable are out of sync.
296 There might be a better way of doing this.
299 if (in_sync || _surface->motorised ()) {
300 controllable->set_value (midi_to_control (new_value));
303 last_controllable_value = new_value;
305 if (msg->value > 64.0f) {
306 controllable->set_value (1);
308 controllable->set_value (0);
312 last_value = (MIDI::byte) (control_to_midi(controllable->get_value())); // to prevent feedback fights
317 MIDIControllable::midi_sense_program_change (Parser &, MIDI::byte msg)
320 if (lookup_controllable ()) {
325 if (!controllable->is_toggle()) {
326 controllable->set_value (midi_to_control (msg));
327 } else if (msg == control_additional) {
328 controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
331 last_value = (MIDI::byte) (controllable->get_value() * 127.0); // to prevent feedback fights
335 MIDIControllable::midi_sense_pitchbend (Parser &, pitchbend_t pb)
338 if (lookup_controllable ()) {
343 if (!controllable->is_toggle()) {
344 controllable->set_value (midi_to_control (pb));
346 controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
349 last_value = control_to_midi (controllable->get_value ());
353 MIDIControllable::midi_receiver (Parser &, MIDI::byte *msg, size_t /*len*/)
355 /* we only respond to channel messages */
357 if ((msg[0] & 0xF0) < 0x80 || (msg[0] & 0xF0) > 0xE0) {
361 /* if the our port doesn't do input anymore, forget it ... */
363 if (!_port.parser()) {
367 bind_midi ((channel_t) (msg[0] & 0xf), eventType (msg[0] & 0xF0), msg[1]);
370 controllable->LearningFinished ();
375 MIDIControllable::bind_midi (channel_t chn, eventType ev, MIDI::byte additional)
379 drop_external_control ();
382 control_channel = chn;
383 control_additional = additional;
385 if (_port.parser() == 0) {
389 Parser& p = *_port.parser();
394 p.channel_note_off[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_note_off, this, _1, _2));
396 /* if this is a togglee, connect to noteOn as well,
397 and we'll toggle back and forth between the two.
401 p.channel_note_on[chn_i].connect_same_thread (midi_sense_connection[1], boost::bind (&MIDIControllable::midi_sense_note_on, this, _1, _2));
404 _control_description = "MIDI control: NoteOff";
408 p.channel_note_on[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_note_on, this, _1, _2));
410 p.channel_note_off[chn_i].connect_same_thread (midi_sense_connection[1], boost::bind (&MIDIControllable::midi_sense_note_off, this, _1, _2));
412 _control_description = "MIDI control: NoteOn";
415 case MIDI::controller:
416 p.channel_controller[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_controller, this, _1, _2));
417 snprintf (buf, sizeof (buf), "MIDI control: Controller %d", control_additional);
418 _control_description = buf;
422 p.channel_program_change[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_program_change, this, _1, _2));
423 _control_description = "MIDI control: ProgramChange";
426 case MIDI::pitchbend:
427 p.channel_pitchbend[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_pitchbend, this, _1, _2));
428 _control_description = "MIDI control: Pitchbend";
437 MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool /*force*/)
439 if (!controllable || control_type == none || !feedback || bufsize <= 2) {
443 int const gm = control_to_midi (controllable->get_value());
445 if (gm == last_value) {
449 *buf++ = (0xF0 & control_type) | (0xF & control_channel);
451 switch (control_type) {
452 case MIDI::pitchbend:
453 *buf++ = int (gm) & 127;
454 *buf++ = (int (gm) >> 7) & 127;
457 *buf++ = control_additional; /* controller number */
469 MIDIControllable::set_state (const XMLNode& node, int /*version*/)
471 const XMLProperty* prop;
474 if ((prop = node.property ("event")) != 0) {
475 sscanf (prop->value().c_str(), "0x%x", &xx);
476 control_type = (MIDI::eventType) xx;
481 if ((prop = node.property ("channel")) != 0) {
482 sscanf (prop->value().c_str(), "%d", &xx);
483 control_channel = (MIDI::channel_t) xx;
488 if ((prop = node.property ("additional")) != 0) {
489 sscanf (prop->value().c_str(), "0x%x", &xx);
490 control_additional = (MIDI::byte) xx;
495 if ((prop = node.property ("feedback")) != 0) {
496 feedback = (prop->value() == "yes");
498 feedback = true; // default
501 bind_midi (control_channel, control_type, control_additional);
507 MIDIControllable::get_state ()
511 XMLNode* node = new XMLNode ("MIDIControllable");
513 if (_current_uri.empty()) {
514 node->add_property ("id", controllable->id().to_s());
516 node->add_property ("uri", _current_uri);
520 snprintf (buf, sizeof(buf), "0x%x", (int) control_type);
521 node->add_property ("event", buf);
522 snprintf (buf, sizeof(buf), "%d", (int) control_channel);
523 node->add_property ("channel", buf);
524 snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
525 node->add_property ("additional", buf);
526 node->add_property ("feedback", (feedback ? "yes" : "no"));
532 /** @return the maximum value for a control value transmitted
533 * using a given MIDI::eventType.
536 MIDIControllable::max_value_for_type () const
538 /* XXX: this is not complete */
540 if (control_type == MIDI::pitchbend) {