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.
22 #include "pbd/compose.h"
23 #include "ardour/debug.h"
27 #include "surface_port.h"
28 #include "control_group.h"
30 using namespace Mackie;
34 Meter::factory (Surface& surface, int id, const char* name, Group& group)
36 Meter* m = new Meter (id, name, group);
37 surface.meters[id] = m;
38 surface.controls.push_back (m);
44 Meter::notify_metering_state_changed(Surface& surface, bool transport_is_rolling, bool metering_active)
49 msg << surface.sysex_hdr();
51 // code for Channel Meter Enable Message
54 // Channel identification
57 // Enable (0x07) / Disable (0x00) level meter on LCD, peak hold display on horizontal meter and signal LED
58 msg << ((transport_is_rolling && metering_active) ? 0x07 : 0x00);
67 Meter::send_update (Surface& surface, float dB)
69 float def = 0.0f; /* Meter deflection %age */
71 // DEBUG_TRACE (DEBUG::MackieControl, string_compose ("Meter ID %1 dB %2\n", id(), dB));
75 } else if (dB < -60.0f) {
76 def = (dB + 70.0f) * 0.25f;
77 } else if (dB < -50.0f) {
78 def = (dB + 60.0f) * 0.5f + 2.5f;
79 } else if (dB < -40.0f) {
80 def = (dB + 50.0f) * 0.75f + 7.5f;
81 } else if (dB < -30.0f) {
82 def = (dB + 40.0f) * 1.5f + 15.0f;
83 } else if (dB < -20.0f) {
84 def = (dB + 30.0f) * 2.0f + 30.0f;
85 } else if (dB < 6.0f) {
86 def = (dB + 20.0f) * 2.5f + 50.0f;
91 /* 115 is the deflection %age that would be
92 when dB=6.0. this is an arbitrary
93 endpoint for our scaling.
101 surface.write (MidiByteArray (2, 0xd0, (id() << 4) | 0xe));
107 surface.write (MidiByteArray (2, 0xd0, (id() << 4) | 0xf));
111 /* we can use up to 13 segments */
113 int segment = lrintf ((def/115.0) * 13.0);
115 surface.write (MidiByteArray (2, 0xd0, (id()<<4) | segment));
121 return MidiByteArray (2, 0xD0, (id()<<4 | 0));