ardour/livetrax
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patch from roy vegard to stop feedback from causing jumps when a MIDI controller and ardour are out of sync

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git-svn-id: svn://localhost/ardour2/branches/3.0@11001 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2011-12-14 15:57:48 +00:00
parent b6d1fb0707
commit dcccd5b4d6
2 changed files with 17 additions and 1 deletions
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17
libs/surfaces/generic_midi/midicontrollable.cc
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@ -48,6 +48,7 @@ MIDIControllable::MIDIControllable (Port& p, bool m)
_learned = false; /* from URI */
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;
@ -63,6 +64,7 @@ MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool m)
_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;
@ -217,7 +219,20 @@ MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
if (control_additional == msg->controller_number) {
if (!controllable->is_toggle()) {
controllable->set_value (midi_to_control (msg->value));
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 = 10;
// prevent jumps when MIDI controller and controllable are "out of sync"
if (range < threshold &&
controllable->get_value() <= midi_to_control(max_value) &&
controllable->get_value() >= midi_to_control(min_value)) {
controllable->set_value (midi_to_control (new_value) );
}
last_controllable_value = new_value;
} else {
if (msg->value > 64.0f) {
controllable->set_value (1);

1
libs/surfaces/generic_midi/midicontrollable.h
View File

@ -95,6 +95,7 @@ class MIDIControllable : public PBD::Stateful
MIDI::Port& _port;
bool setting;
MIDI::byte last_value;
float last_controllable_value;
bool _momentary;
bool _is_gain_controller;
bool _learned;