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 bool MIDIControllable::_send_feedback = false;
37 MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool is_bistate)
38 : controllable (c), _port (p), bistate (is_bistate)
41 last_written = 0; // got a better idea ?
43 _control_description = "MIDI Control: none";
44 control_additional = (byte) -1;
46 feedback = true; // for now
48 /* use channel 0 ("1") as the initial channel */
53 MIDIControllable::~MIDIControllable ()
55 drop_external_control ();
59 MIDIControllable::midi_forget ()
61 /* stop listening for incoming messages, but retain
62 our existing event + type information.
65 if (connections > 0) {
66 midi_sense_connection[0].disconnect ();
69 if (connections > 1) {
70 midi_sense_connection[1].disconnect ();
74 midi_learn_connection.disconnect ();
79 MIDIControllable::midi_rebind (channel_t c)
82 bind_midi (c, control_type, control_additional);
89 MIDIControllable::learn_about_external_control ()
91 drop_external_control ();
92 midi_learn_connection = _port.input()->any.connect (mem_fun (*this, &MIDIControllable::midi_receiver));
97 MIDIControllable::stop_learning ()
99 midi_learn_connection.disconnect ();
103 MIDIControllable::drop_external_control ()
105 if (connections > 0) {
106 midi_sense_connection[0].disconnect ();
108 if (connections > 1) {
109 midi_sense_connection[1].disconnect ();
113 midi_learn_connection.disconnect ();
116 control_additional = (byte) -1;
120 MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
122 midi_sense_note (p, tb, true);
126 MIDIControllable::midi_sense_note_off (Parser &p, EventTwoBytes *tb)
128 midi_sense_note (p, tb, false);
132 MIDIControllable::midi_sense_note (Parser &p, EventTwoBytes *msg, bool is_on)
135 controllable.set_value (msg->note_number/127.0);
138 /* Note: parser handles the use of zero velocity to
139 mean note off. if we get called with is_on=true, then we
140 got a *real* note on.
143 if (msg->note_number == control_additional) {
144 controllable.set_value (is_on ? 1 : 0);
150 MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
152 if (control_additional == msg->controller_number) {
154 controllable.set_value (msg->value/127.0);
156 if (msg->value > 64.0) {
157 controllable.set_value (1);
159 controllable.set_value (0);
166 MIDIControllable::midi_sense_program_change (Parser &p, byte msg)
168 /* XXX program change messages make no sense for bistates */
171 controllable.set_value (msg/127.0);
176 MIDIControllable::midi_sense_pitchbend (Parser &p, pitchbend_t pb)
178 /* pitchbend messages make no sense for bistates */
180 /* XXX gack - get rid of assumption about typeof pitchbend_t */
182 controllable.set_value ((pb/(float) SHRT_MAX));
186 MIDIControllable::midi_receiver (Parser &p, byte *msg, size_t len)
188 /* we only respond to channel messages */
190 if ((msg[0] & 0xF0) < 0x80 || (msg[0] & 0xF0) > 0xE0) {
194 /* if the our port doesn't do input anymore, forget it ... */
196 if (!_port.input()) {
200 bind_midi ((channel_t) (msg[0] & 0xf), eventType (msg[0] & 0xF0), msg[1]);
206 MIDIControllable::bind_midi (channel_t chn, eventType ev, MIDI::byte additional)
210 drop_external_control ();
213 control_channel = chn;
214 control_additional = additional;
216 if (_port.input() == 0) {
220 Parser& p = *_port.input();
225 midi_sense_connection[0] = p.channel_note_off[chn_i].connect
226 (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
228 /* if this is a bistate, connect to noteOn as well,
229 and we'll toggle back and forth between the two.
233 midi_sense_connection[1] = p.channel_note_on[chn_i].connect
234 (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
239 _control_description = "MIDI control: NoteOff";
243 midi_sense_connection[0] = p.channel_note_on[chn_i].connect
244 (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
246 midi_sense_connection[1] = p.channel_note_off[chn_i].connect
247 (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
252 _control_description = "MIDI control: NoteOn";
255 case MIDI::controller:
256 midi_sense_connection[0] = p.channel_controller[chn_i].connect
257 (mem_fun (*this, &MIDIControllable::midi_sense_controller));
259 snprintf (buf, sizeof (buf), "MIDI control: Controller %d", control_additional);
260 _control_description = buf;
265 midi_sense_connection[0] = p.channel_program_change[chn_i].connect
267 &MIDIControllable::midi_sense_program_change));
269 _control_description = "MIDI control: ProgramChange";
273 case MIDI::pitchbend:
275 midi_sense_connection[0] = p.channel_pitchbend[chn_i].connect
276 (mem_fun (*this, &MIDIControllable::midi_sense_pitchbend));
278 _control_description = "MIDI control: Pitchbend";
288 MIDIControllable::send_feedback ()
292 if (setting || !_send_feedback || control_type == none) {
296 msg[0] = (control_type & 0xF0) | (control_channel & 0xF);
297 msg[1] = control_additional;
298 msg[2] = (byte) (controllable.get_value() * 127.0f);
300 _port.write (msg, 3);
304 MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool force)
306 if (control_type != none &&_send_feedback && bufsize > 2) {
308 MIDI::byte gm = (MIDI::byte) (controllable.get_value() * 127.0);
310 if (gm != last_written) {
311 *buf++ = (0xF0 & control_type) | (0xF & control_channel);
312 *buf++ = control_additional; /* controller number */
323 MIDIControllable::set_state (const XMLNode& node)
325 const XMLProperty* prop;
328 if ((prop = node.property ("event")) != 0) {
329 sscanf (prop->value().c_str(), "0x%x", &xx);
330 control_type = (MIDI::eventType) xx;
335 if ((prop = node.property ("channel")) != 0) {
336 sscanf (prop->value().c_str(), "%d", &xx);
337 control_channel = (MIDI::channel_t) xx;
342 if ((prop = node.property ("additional")) != 0) {
343 sscanf (prop->value().c_str(), "0x%x", &xx);
344 control_additional = (MIDI::byte) xx;
353 MIDIControllable::get_state ()
356 XMLNode& node (controllable.get_state ());
358 snprintf (buf, sizeof(buf), "0x%x", (int) control_type);
359 node.add_property ("event", buf);
360 snprintf (buf, sizeof(buf), "%d", (int) control_channel);
361 node.add_property ("channel", buf);
362 snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
363 node.add_property ("additional", buf);