/*
Copyright (C) 1998-2006 Paul Davis
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
*/
-#include <cstdio> /* for sprintf, sigh */
+#include <stdint.h>
+#include <cmath>
#include <climits>
-#include <pbd/error.h>
-#include <pbd/xml++.h>
-#include <midi++/port.h>
-#include <midi++/channel.h>
+#include <iostream>
+
+#include "pbd/error.h"
+#include "pbd/controllable_descriptor.h"
+#include "pbd/xml++.h"
+#include "pbd/stacktrace.h"
+
+#include "midi++/channel.h"
+
+#include "ardour/async_midi_port.h"
+#include "ardour/automation_control.h"
+#include "ardour/midi_ui.h"
+#include "ardour/utils.h"
#include "midicontrollable.h"
+#include "generic_midi_control_protocol.h"
-using namespace sigc;
+using namespace std;
using namespace MIDI;
using namespace PBD;
using namespace ARDOUR;
-MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool is_bistate)
- : controllable (c), _port (p), bistate (is_bistate)
+MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, MIDI::Parser& p, bool m)
+ : _surface (s)
+ , controllable (0)
+ , _descriptor (0)
+ , _parser (p)
+ , _momentary (m)
{
+ _learned = false; /* from URI */
setting = false;
- last_written = 0; // got a better idea ?
+ last_value = 0; // got a better idea ?
+ last_controllable_value = 0.0f;
control_type = none;
_control_description = "MIDI Control: none";
control_additional = (byte) -1;
- connections = 0;
feedback = true; // for now
-
- /* use channel 0 ("1") as the initial channel */
+}
- midi_rebind (0);
+MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, MIDI::Parser& p, Controllable& c, bool m)
+ : _surface (s)
+ , _descriptor (0)
+ , _parser (p)
+ , _momentary (m)
+{
+ set_controllable (&c);
+
+ _learned = true; /* from controllable */
+ setting = false;
+ last_value = 0; // got a better idea ?
+ last_controllable_value = 0.0f;
+ control_type = none;
+ _control_description = "MIDI Control: none";
+ control_additional = (byte) -1;
+ feedback = true; // for now
}
MIDIControllable::~MIDIControllable ()
drop_external_control ();
}
+int
+MIDIControllable::init (const std::string& s)
+{
+ _current_uri = s;
+ delete _descriptor;
+ _descriptor = new ControllableDescriptor;
+ return _descriptor->set (s);
+}
+
void
MIDIControllable::midi_forget ()
{
/* stop listening for incoming messages, but retain
our existing event + type information.
*/
-
- if (connections > 0) {
- midi_sense_connection[0].disconnect ();
- }
-
- if (connections > 1) {
- midi_sense_connection[1].disconnect ();
- }
-
- connections = 0;
+
+ midi_sense_connection[0].disconnect ();
+ midi_sense_connection[1].disconnect ();
midi_learn_connection.disconnect ();
+}
+
+void
+MIDIControllable::drop_external_control ()
+{
+ midi_forget ();
+ control_type = none;
+ control_additional = (byte) -1;
+}
+
+void
+MIDIControllable::set_controllable (Controllable* c)
+{
+ if (c == controllable) {
+ return;
+ }
+ controllable_death_connection.disconnect ();
+
+ controllable = c;
+
+ if (controllable) {
+ last_controllable_value = controllable->get_value();
+ } else {
+ last_controllable_value = 0.0f; // is there a better value?
+ }
+
+ if (controllable) {
+ controllable->Destroyed.connect (controllable_death_connection, MISSING_INVALIDATOR,
+ boost::bind (&MIDIControllable::drop_controllable, this),
+ MidiControlUI::instance());
+ }
}
void
MIDIControllable::learn_about_external_control ()
{
drop_external_control ();
- midi_learn_connection = _port.input()->any.connect (mem_fun (*this, &MIDIControllable::midi_receiver));
+ _parser.any.connect_same_thread (midi_learn_connection, boost::bind (&MIDIControllable::midi_receiver, this, _1, _2, _3));
}
void
midi_learn_connection.disconnect ();
}
-void
-MIDIControllable::drop_external_control ()
+int
+MIDIControllable::control_to_midi (float val)
{
- cerr << "Dropping existing control using " << connections << " connections\n";
+ if (controllable->is_gain_like()) {
+ return gain_to_slider_position (val) * max_value_for_type ();
+ }
- if (connections > 0) {
- midi_sense_connection[0].disconnect ();
- }
- if (connections > 1) {
- midi_sense_connection[1].disconnect ();
+ float control_min = controllable->lower ();
+ float control_max = controllable->upper ();
+ const float control_range = control_max - control_min;
+
+ if (controllable->is_toggle()) {
+ if (val >= (control_min + (control_range/2.0f))) {
+ return max_value_for_type();
+ } else {
+ return 0;
+ }
}
- connections = 0;
- midi_learn_connection.disconnect ();
+ return (val - control_min) / control_range * max_value_for_type ();
+}
- control_type = none;
- control_additional = (byte) -1;
+float
+MIDIControllable::midi_to_control (int val)
+{
+ /* fiddle with MIDI value so that we get an odd number of integer steps
+ and can thus represent "middle" precisely as 0.5. this maps to
+ the range 0..+1.0
+ */
+
+ float fv = (val == 0 ? 0 : float (val - 1) / (max_value_for_type() - 1));
+
+ if (controllable->is_gain_like()) {
+ return slider_position_to_gain (fv);
+ }
+
+ float control_min = controllable->lower ();
+ float control_max = controllable->upper ();
+ const float control_range = control_max - control_min;
+
+ return (fv * control_range) + control_min;
}
-void
-MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
+void
+MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
{
midi_sense_note (p, tb, true);
}
-void
-MIDIControllable::midi_sense_note_off (Parser &p, EventTwoBytes *tb)
+void
+MIDIControllable::midi_sense_note_off (Parser &p, EventTwoBytes *tb)
{
midi_sense_note (p, tb, false);
}
+int
+MIDIControllable::lookup_controllable()
+{
+ if (!_descriptor) {
+ return -1;
+ }
+
+ boost::shared_ptr<Controllable> c = _surface->lookup_controllable (*_descriptor);
+
+ if (!c) {
+ return -1;
+ }
+
+ set_controllable (c.get ());
+
+ return 0;
+}
+
void
-MIDIControllable::midi_sense_note (Parser &p, EventTwoBytes *msg, bool is_on)
+MIDIControllable::drop_controllable ()
{
- if (!bistate) {
- controllable.set_value (msg->note_number/127.0);
- } else {
+ set_controllable (0);
+}
- /* Note: parser handles the use of zero velocity to
- mean note off. if we get called with is_on=true, then we
- got a *real* note on.
- */
+void
+MIDIControllable::midi_sense_note (Parser &, EventTwoBytes *msg, bool /*is_on*/)
+{
+ if (!controllable) {
+ if (lookup_controllable()) {
+ return;
+ }
+ }
- if (msg->note_number == control_additional) {
- controllable.set_value (is_on ? 1 : 0);
+ if (!controllable->is_toggle()) {
+ if (control_additional == msg->note_number) {
+ controllable->set_value (midi_to_control (msg->velocity));
+ }
+ } else {
+ if (control_additional == msg->note_number) {
+ controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
}
}
+
+ last_value = (MIDI::byte) (controllable->get_value() * 127.0); // to prevent feedback fights
}
void
MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
{
+ if (!controllable) {
+ if (lookup_controllable ()) {
+ return;
+ }
+ }
+
+ assert (controllable);
+
+ if (controllable->touching()) {
+ return; // to prevent feedback fights when e.g. dragging a UI slider
+ }
+
if (control_additional == msg->controller_number) {
- if (!bistate) {
- controllable.set_value (msg->value/127.0);
+
+ if (!controllable->is_toggle()) {
+
+ float new_value = msg->value;
+ float max_value = max(last_controllable_value, new_value);
+ float min_value = min(last_controllable_value, new_value);
+ float range = max_value - min_value;
+ float threshold = (float) _surface->threshold ();
+
+ bool const in_sync = (
+ range < threshold &&
+ controllable->get_value() <= midi_to_control(max_value) &&
+ controllable->get_value() >= midi_to_control(min_value)
+ );
+
+ /* If the surface is not motorised, we try to prevent jumps when
+ the MIDI controller and controllable are out of sync.
+ There might be a better way of doing this.
+ */
+
+ if (in_sync || _surface->motorised ()) {
+ controllable->set_value (midi_to_control (new_value));
+ }
+
+ last_controllable_value = new_value;
} else {
- if (msg->value > 64.0) {
- controllable.set_value (1);
+ if (msg->value > 64.0f) {
+ controllable->set_value (1);
} else {
- controllable.set_value (0);
+ controllable->set_value (0);
}
}
+
+ last_value = (MIDI::byte) (control_to_midi(controllable->get_value())); // to prevent feedback fights
}
}
void
-MIDIControllable::midi_sense_program_change (Parser &p, byte msg)
+MIDIControllable::midi_sense_program_change (Parser &, byte msg)
{
- /* XXX program change messages make no sense for bistates */
+ if (!controllable) {
+ if (lookup_controllable ()) {
+ return;
+ }
+ }
+
+ if (!controllable->is_toggle()) {
+ controllable->set_value (midi_to_control (msg));
+ } else if (msg == control_additional) {
+ controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
+ }
- if (!bistate) {
- controllable.set_value (msg/127.0);
- }
+ last_value = (MIDI::byte) (controllable->get_value() * 127.0); // to prevent feedback fights
}
void
-MIDIControllable::midi_sense_pitchbend (Parser &p, pitchbend_t pb)
+MIDIControllable::midi_sense_pitchbend (Parser &, pitchbend_t pb)
{
- /* pitchbend messages make no sense for bistates */
+ if (!controllable) {
+ if (lookup_controllable ()) {
+ return;
+ }
+ }
- /* XXX gack - get rid of assumption about typeof pitchbend_t */
+ if (!controllable->is_toggle()) {
+ controllable->set_value (midi_to_control (pb));
+ } else {
+ controllable->set_value (controllable->get_value() > 0.5f ? 0.0f : 1.0f);
+ }
- controllable.set_value ((pb/(float) SHRT_MAX));
-}
+ last_value = control_to_midi (controllable->get_value ());
+}
void
-MIDIControllable::midi_receiver (Parser &p, byte *msg, size_t len)
+MIDIControllable::midi_receiver (Parser &, byte *msg, size_t /*len*/)
{
/* we only respond to channel messages */
return;
}
- /* if the our port doesn't do input anymore, forget it ... */
-
- if (!_port.input()) {
- return;
- }
-
bind_midi ((channel_t) (msg[0] & 0xf), eventType (msg[0] & 0xF0), msg[1]);
- controllable.LearningFinished ();
+ if (controllable) {
+ controllable->LearningFinished ();
+ }
}
void
control_channel = chn;
control_additional = additional;
- if (_port.input() == 0) {
- return;
- }
-
- Parser& p = *_port.input();
-
int chn_i = chn;
switch (ev) {
case MIDI::off:
- midi_sense_connection[0] = p.channel_note_off[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
+ _parser.channel_note_off[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_note_off, this, _1, _2));
- /* if this is a bistate, connect to noteOn as well,
+ /* if this is a togglee, connect to noteOn as well,
and we'll toggle back and forth between the two.
*/
- if (bistate) {
- midi_sense_connection[1] = p.channel_note_on[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
- connections = 2;
- } else {
- connections = 1;
- }
+ if (_momentary) {
+ _parser.channel_note_on[chn_i].connect_same_thread (midi_sense_connection[1], boost::bind (&MIDIControllable::midi_sense_note_on, this, _1, _2));
+ }
+
_control_description = "MIDI control: NoteOff";
break;
case MIDI::on:
- midi_sense_connection[0] = p.channel_note_on[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_note_on));
- if (bistate) {
- midi_sense_connection[1] = p.channel_note_off[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_note_off));
- connections = 2;
- } else {
- connections = 1;
+ _parser.channel_note_on[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_note_on, this, _1, _2));
+ if (_momentary) {
+ _parser.channel_note_off[chn_i].connect_same_thread (midi_sense_connection[1], boost::bind (&MIDIControllable::midi_sense_note_off, this, _1, _2));
}
_control_description = "MIDI control: NoteOn";
break;
-
+
case MIDI::controller:
- midi_sense_connection[0] = p.channel_controller[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_controller));
- connections = 1;
+ _parser.channel_controller[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_controller, this, _1, _2));
snprintf (buf, sizeof (buf), "MIDI control: Controller %d", control_additional);
_control_description = buf;
break;
case MIDI::program:
- if (!bistate) {
- midi_sense_connection[0] = p.channel_program_change[chn_i].connect
- (mem_fun (*this,
- &MIDIControllable::midi_sense_program_change));
- connections = 1;
- _control_description = "MIDI control: ProgramChange";
- }
+ _parser.channel_program_change[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_program_change, this, _1, _2));
+ _control_description = "MIDI control: ProgramChange";
break;
case MIDI::pitchbend:
- if (!bistate) {
- midi_sense_connection[0] = p.channel_pitchbend[chn_i].connect
- (mem_fun (*this, &MIDIControllable::midi_sense_pitchbend));
- connections = 1;
- _control_description = "MIDI control: Pitchbend";
- }
+ _parser.channel_pitchbend[chn_i].connect_same_thread (midi_sense_connection[0], boost::bind (&MIDIControllable::midi_sense_pitchbend, this, _1, _2));
+ _control_description = "MIDI control: Pitchbend";
break;
default:
break;
}
-
- cerr << "MIDI bound with " << connections << endl;
}
-void
-MIDIControllable::send_feedback ()
+MIDI::byte*
+MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool /*force*/)
{
- byte msg[3];
-
- if (setting || !feedback || control_type == none) {
- return;
+ if (!controllable || control_type == none || !feedback || bufsize <= 2) {
+ return buf;
}
- msg[0] = (control_type & 0xF0) | (control_channel & 0xF);
- msg[1] = control_additional;
- msg[2] = (byte) (controllable.get_value() * 127.0f);
+ int const gm = control_to_midi (controllable->get_value());
- //_port.write (msg, 3);
-}
-
-MIDI::byte*
-MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool force)
-{
- if (control_type != none && feedback && bufsize > 2) {
-
- MIDI::byte gm = (MIDI::byte) (controllable.get_value() * 127.0);
-
- if (gm != last_written) {
- *buf++ = (0xF0 & control_type) | (0xF & control_channel);
- *buf++ = control_additional; /* controller number */
- *buf++ = gm;
- last_written = gm;
- bufsize -= 3;
- }
+ if (gm == last_value) {
+ return buf;
}
+
+ *buf++ = (0xF0 & control_type) | (0xF & control_channel);
+ switch (control_type) {
+ case MIDI::pitchbend:
+ *buf++ = int (gm) & 127;
+ *buf++ = (int (gm) >> 7) & 127;
+ break;
+ default:
+ *buf++ = control_additional; /* controller number */
+ *buf++ = gm;
+ break;
+ }
+
+ last_value = gm;
+ bufsize -= 3;
+
return buf;
}
-int
-MIDIControllable::set_state (const XMLNode& node)
+int
+MIDIControllable::set_state (const XMLNode& node, int /*version*/)
{
const XMLProperty* prop;
int xx;
}
bind_midi (control_channel, control_type, control_additional);
-
+
return 0;
}
MIDIControllable::get_state ()
{
char buf[32];
- XMLNode& node (controllable.get_state ());
- snprintf (buf, sizeof(buf), "0x%x", (int) control_type);
- node.add_property ("event", buf);
- snprintf (buf, sizeof(buf), "%d", (int) control_channel);
- node.add_property ("channel", buf);
- snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
- node.add_property ("additional", buf);
- node.add_property ("feedback", (feedback ? "yes" : "no"));
+ XMLNode* node = new XMLNode ("MIDIControllable");
- return node;
+ if (_current_uri.empty()) {
+ node->add_property ("id", controllable->id().to_s());
+ } else {
+ node->add_property ("uri", _current_uri);
+ }
+
+ if (controllable) {
+ snprintf (buf, sizeof(buf), "0x%x", (int) control_type);
+ node->add_property ("event", buf);
+ snprintf (buf, sizeof(buf), "%d", (int) control_channel);
+ node->add_property ("channel", buf);
+ snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
+ node->add_property ("additional", buf);
+ node->add_property ("feedback", (feedback ? "yes" : "no"));
+ }
+
+ return *node;
}
+/** @return the maximum value for a control value transmitted
+ * using a given MIDI::eventType.
+ */
+int
+MIDIControllable::max_value_for_type () const
+{
+ /* XXX: this is not complete */
+
+ if (control_type == MIDI::pitchbend) {
+ return 16383;
+ }
+
+ return 127;
+}
projects / ardour.git / blobdiff