2 Copyright (C) 2006,2007 John Anderson
3 Copyright (C) 2012 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "control_group.h"
25 using namespace ArdourSurface;
26 using namespace Mackie;
28 int const Pot::External = 0x2e; /* specific ID for "vpot" representing external control */
29 int const Pot::ID = 0x10; /* base value for v-pot IDs */
32 Pot::factory (Surface& surface, int id, const char* name, Group& group)
34 Pot* p = new Pot (id, name, group);
36 surface.controls.push_back (p);
42 Pot::set (float val, bool onoff, Mode mode)
44 // TODO do an exact calc for 0.50? To allow manually re-centering the port.
46 // center on if val is "very close" to 0.50
47 MIDI::byte msg = (val > 0.48 && val < 0.58 ? 1 : 0) << 6;
53 * Even though a width value may be negative, there is
54 * technically still width there, it is just reversed,
55 * so make sure to show it on the LED ring appropriately.
61 // val, but only if off hasn't explicitly been set
64 msg |= (lrintf (val * 6)) & 0x0f; // 0b00001111
66 msg |= (lrintf (val * 10.0) + 1) & 0x0f; // 0b00001111
70 /* outbound LED message requires 0x20 to be added to the LED's id
73 return MidiByteArray (3, 0xb0, 0x20 + id(), msg);