ardour/livetrax
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handle encoder changes. shift+knob = input trim. ToDo: panner control

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This commit is contained in:
Ben Loftis 2015-11-25 14:52:58 -06:00
parent 4e014da61a
commit 487ada6630
2 changed files with 49 additions and 0 deletions
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45
libs/surfaces/faderport/faderport.cc
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@ -38,6 +38,7 @@
#include "ardour/async_midi_port.h"
#include "ardour/audioengine.h"
#include "ardour/amp.h"
#include "ardour/debug.h"
#include "ardour/filesystem_paths.h"
#include "ardour/midi_port.h"
@ -71,6 +72,8 @@ FaderPort::FaderPort (Session& s)
, button_state (ButtonState (0))
, blink_state (false)
{
last_encoder_time = 0;
boost::shared_ptr<ARDOUR::Port> inp;
boost::shared_ptr<ARDOUR::Port> outp;
@ -285,11 +288,53 @@ FaderPort::switch_handler (MIDI::Parser &, MIDI::EventTwoBytes* tb)
void
FaderPort::encoder_handler (MIDI::Parser &, MIDI::pitchbend_t pb)
{
int delta = 1;
if (pb < 8192) {
cerr << "Encoder right\n";
} else {
delta = -1;
cerr << "Encoder left\n";
}
//knob debouncing and hysteresis. The presonus encoder often sends bursts of events, or goes the wrong direction
{
last_last_encoder_delta = last_encoder_delta;
last_encoder_delta = delta;
microseconds_t now = get_microseconds ();
if ((now - last_encoder_time) < 10*1000) { //require at least 10ms interval between changes, because the device sometimes sends multiple deltas
return;
}
if ((now - last_encoder_time) < 100*1000) { //avoid directional changes while "spinning", 100ms window
if ( (delta == last_encoder_delta) && (delta == last_last_encoder_delta) ) {
last_good_encoder_delta = delta; //3 in a row, grudgingly accept this as the new direction
}
if (delta != last_good_encoder_delta) { //otherwise ensure we keep going the same way
delta = last_good_encoder_delta;
}
} else { //we aren't yet in a spin window, just assume this move is really what we want
//NOTE: if you are worried about where these get initialized, here it is.
last_last_encoder_delta = delta;
last_encoder_delta = delta;
}
last_encoder_time = now;
last_good_encoder_delta = delta;
}
if (_current_route) {
if ( (button_state & ShiftDown) == ShiftDown ) { //shift+encoder = input trim
boost::shared_ptr<AutomationControl> gain = _current_route->trim()->gain_control ();
if (gain) {
float val = gain->get_user(); //for gain elements, the "user" value is in dB
val += delta;
gain->set_user(val);
}
} else { //pan / balance
//ToDo
}
}
}
void

4
libs/surfaces/faderport/faderport.h
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@ -128,6 +128,10 @@ class FaderPort : public ARDOUR::ControlProtocol, public AbstractUI<FaderPortReq
int fader_lsb;
bool fader_is_touched;
ARDOUR::microseconds_t last_encoder_time;
int last_good_encoder_delta;
int last_encoder_delta, last_last_encoder_delta;
void sysex_handler (MIDI::Parser &p, MIDI::byte *, size_t);
void switch_handler (MIDI::Parser &, MIDI::EventTwoBytes* tb);
void encoder_handler (MIDI::Parser &, MIDI::pitchbend_t pb);