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.
18 $Id: midicontrollable.cc 629 2006-06-21 23:01:03Z paul $
21 #include <cstdio> /* for sprintf, sigh */
23 #include <pbd/error.h>
24 #include <pbd/xml++.h>
25 #include <midi++/port.h>
26 #include <midi++/channel.h>
28 #include "midicontrollable.h"
33 using namespace ARDOUR;
35 MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool is_bistate)
36 : controllable (c), _port (p), bistate (is_bistate)
39 last_written = 0; // got a better idea ?
41 _control_description = "MIDI Control: none";
42 control_additional = (byte) -1;
44 feedback = true; // for now
46 /* use channel 0 ("1") as the initial channel */
51 MIDIControllable::~MIDIControllable ()
53 drop_external_control ();
57 MIDIControllable::midi_forget ()
59 /* stop listening for incoming messages, but retain
60 our existing event + type information.
63 if (connections > 0) {
64 midi_sense_connection[0].disconnect ();
67 if (connections > 1) {
68 midi_sense_connection[1].disconnect ();
72 midi_learn_connection.disconnect ();
77 MIDIControllable::midi_rebind (channel_t c)
80 bind_midi (c, control_type, control_additional);
87 MIDIControllable::learn_about_external_control ()
89 drop_external_control ();
90 midi_learn_connection = _port.input()->any.connect (mem_fun (*this, &MIDIControllable::midi_receiver));
94 MIDIControllable::stop_learning ()
96 midi_learn_connection.disconnect ();
100 MIDIControllable::drop_external_control ()
102 if (connections > 0) {
103 midi_sense_connection[0].disconnect ();
105 if (connections > 1) {
106 midi_sense_connection[1].disconnect ();
110 midi_learn_connection.disconnect ();
113 control_additional = (byte) -1;
117 MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
119 midi_sense_note (p, tb, true);
123 MIDIControllable::midi_sense_note_off (Parser &p, EventTwoBytes *tb)
125 midi_sense_note (p, tb, false);
129 MIDIControllable::midi_sense_note (Parser &p, EventTwoBytes *msg, bool is_on)
132 controllable.set_value (msg->note_number/127.0);
135 /* Note: parser handles the use of zero velocity to
136 mean note off. if we get called with is_on=true, then we
137 got a *real* note on.
140 if (msg->note_number == control_additional) {
141 controllable.set_value (is_on ? 1 : 0);
147 MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
149 if (control_additional == msg->controller_number) {
151 controllable.set_value (msg->value/127.0);
153 if (msg->value > 64.0) {
154 controllable.set_value (1);
156 controllable.set_value (0);
163 MIDIControllable::midi_sense_program_change (Parser &p, byte msg)
165 /* XXX program change messages make no sense for bistates */
168 controllable.set_value (msg/127.0);
173 MIDIControllable::midi_sense_pitchbend (Parser &p, pitchbend_t pb)
175 /* pitchbend messages make no sense for bistates */
177 /* XXX gack - get rid of assumption about typeof pitchbend_t */
179 controllable.set_value ((pb/(float) SHRT_MAX));
183 MIDIControllable::midi_receiver (Parser &p, byte *msg, size_t len)
185 /* we only respond to channel messages */
187 if ((msg[0] & 0xF0) < 0x80 || (msg[0] & 0xF0) > 0xE0) {
191 /* if the our port doesn't do input anymore, forget it ... */
193 if (!_port.input()) {
197 bind_midi ((channel_t) (msg[0] & 0xf), eventType (msg[0] & 0xF0), msg[1]);
199 controllable.LearningFinished ();
203 MIDIControllable::bind_midi (channel_t chn, eventType ev, MIDI::byte additional)
207 drop_external_control ();
210 control_channel = chn;
211 control_additional = additional;
213 if (_port.input() == 0) {
217 Parser& p = *_port.input();
222 midi_sense_connection[0] = p.channel_note_off[chn_i].connect
223 (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
225 /* if this is a bistate, connect to noteOn as well,
226 and we'll toggle back and forth between the two.
230 midi_sense_connection[1] = p.channel_note_on[chn_i].connect
231 (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
236 _control_description = "MIDI control: NoteOff";
240 midi_sense_connection[0] = p.channel_note_on[chn_i].connect
241 (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
243 midi_sense_connection[1] = p.channel_note_off[chn_i].connect
244 (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
249 _control_description = "MIDI control: NoteOn";
252 case MIDI::controller:
253 midi_sense_connection[0] = p.channel_controller[chn_i].connect
254 (mem_fun (*this, &MIDIControllable::midi_sense_controller));
256 snprintf (buf, sizeof (buf), "MIDI control: Controller %d", control_additional);
257 _control_description = buf;
262 midi_sense_connection[0] = p.channel_program_change[chn_i].connect
264 &MIDIControllable::midi_sense_program_change));
266 _control_description = "MIDI control: ProgramChange";
270 case MIDI::pitchbend:
272 midi_sense_connection[0] = p.channel_pitchbend[chn_i].connect
273 (mem_fun (*this, &MIDIControllable::midi_sense_pitchbend));
275 _control_description = "MIDI control: Pitchbend";
285 MIDIControllable::send_feedback ()
289 if (setting || !feedback || control_type == none) {
293 msg[0] = (control_type & 0xF0) | (control_channel & 0xF);
294 msg[1] = control_additional;
295 msg[2] = (byte) (controllable.get_value() * 127.0f);
297 //_port.write (msg, 3);
301 MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool force)
303 if (control_type != none && feedback && bufsize > 2) {
305 MIDI::byte gm = (MIDI::byte) (controllable.get_value() * 127.0);
307 if (gm != last_written) {
308 *buf++ = (0xF0 & control_type) | (0xF & control_channel);
309 *buf++ = control_additional; /* controller number */
320 MIDIControllable::set_state (const XMLNode& node)
322 const XMLProperty* prop;
325 if ((prop = node.property ("event")) != 0) {
326 sscanf (prop->value().c_str(), "0x%x", &xx);
327 control_type = (MIDI::eventType) xx;
332 if ((prop = node.property ("channel")) != 0) {
333 sscanf (prop->value().c_str(), "%d", &xx);
334 control_channel = (MIDI::channel_t) xx;
339 if ((prop = node.property ("additional")) != 0) {
340 sscanf (prop->value().c_str(), "0x%x", &xx);
341 control_additional = (MIDI::byte) xx;
346 if ((prop = node.property ("feedback")) != 0) {
347 feedback = (prop->value() == "yes");
349 feedback = true; // default
352 bind_midi (control_channel, control_type, control_additional);
358 MIDIControllable::get_state ()
361 XMLNode& node (controllable.get_state ());
363 snprintf (buf, sizeof(buf), "0x%x", (int) control_type);
364 node.add_property ("event", buf);
365 snprintf (buf, sizeof(buf), "%d", (int) control_channel);
366 node.add_property ("channel", buf);
367 snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
368 node.add_property ("additional", buf);
369 node.add_property ("feedback", (feedback ? "yes" : "no"));