diff options
author | Len Ovens <len@ovenwerks.net> | 2015-07-20 23:15:53 -0700 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2015-07-27 16:17:38 -0400 |
commit | d3b4ef4eeda501cd5e5e954bdd8393504362ec44 (patch) | |
tree | e493a54f726fea40047041688c92f779d64a9d0f /libs/surfaces/generic_midi/midicontrollable.cc | |
parent | ae3d4efce0a39bb7f603a8b1e990cfdd36e34a59 (diff) |
Add enc to midi map for mcp style encoders.
Diffstat (limited to 'libs/surfaces/generic_midi/midicontrollable.cc')
-rw-r--r-- | libs/surfaces/generic_midi/midicontrollable.cc | 64 |
1 files changed, 39 insertions, 25 deletions
diff --git a/libs/surfaces/generic_midi/midicontrollable.cc b/libs/surfaces/generic_midi/midicontrollable.cc index a5c2e9c017..9ac8c794e8 100644 --- a/libs/surfaces/generic_midi/midicontrollable.cc +++ b/libs/surfaces/generic_midi/midicontrollable.cc @@ -54,6 +54,7 @@ MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, MIDI::Parser& , _momentary (m) { _learned = false; /* from URI */ + _encoder = false; setting = false; last_value = 0; // got a better idea ? last_controllable_value = 0.0f; @@ -72,6 +73,7 @@ MIDIControllable::MIDIControllable (GenericMidiControlProtocol* s, MIDI::Parser& set_controllable (&c); _learned = true; /* from controllable */ + _encoder = false; setting = false; last_value = 0; // got a better idea ? last_controllable_value = 0.0f; @@ -188,8 +190,9 @@ MIDIControllable::control_to_midi (float val) val = actl->internal_to_interface(val); } } - - return (val - control_min) / control_range * max_value_for_type (); + // fiddle value of max so value doesn't jump from 125 to 127 for 1.0 + // otherwise decrement won't work. + return (val - control_min) / control_range * (max_value_for_type () - 1); } float @@ -197,7 +200,7 @@ 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 + the range 0..+1.0 (0 to 126) */ float fv = (val == 0 ? 0 : float (val - 1) / (max_value_for_type() - 1)); @@ -301,30 +304,41 @@ MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg) if (control_additional == msg->controller_number) { if (!controllable->is_toggle()) { + if (!is_encoder()) { + 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)); + } + DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("MIDI CC %1 value %2 %3\n", (int) msg->controller_number, (float) midi_to_control(new_value), current_uri() )); + + last_controllable_value = new_value; + } else { + // add or subtract ticks from last value + int offset = (msg->value & 0x3f); + if (msg->value > 0x40) { + controllable->set_value (midi_to_control (last_value - offset + 1)); + } else { + controllable->set_value (midi_to_control (last_value + offset + 1)); + } + DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("MIDI CC %1 value %2 %3\n", (int) msg->controller_number, (int) last_value, current_uri() )); - 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)); } - DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("MIDI CC %1 value %2 %3\n", (int) msg->controller_number, (float) midi_to_control(new_value), current_uri() )); - - last_controllable_value = new_value; } else { if (msg->value > 64.0f) { controllable->set_value (1); |