1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
Copyright (C) 2014 Paul Davis
Author: David Robillard
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "ardour/amp.h"
#include "ardour/dB.h"
#include "ardour/parameter_descriptor.h"
#include "ardour/rc_configuration.h"
#include "ardour/types.h"
#include "ardour/utils.h"
#include "pbd/i18n.h"
namespace ARDOUR {
ParameterDescriptor::ParameterDescriptor(const Evoral::Parameter& parameter)
: Evoral::ParameterDescriptor()
, key((uint32_t)-1)
, datatype(Variant::NOTHING)
, type((AutomationType)parameter.type())
, unit(NONE)
, step(0)
, smallstep(0)
, largestep(0)
, integer_step(parameter.type() >= MidiCCAutomation &&
parameter.type() <= MidiChannelPressureAutomation)
, logarithmic(false)
, sr_dependent(false)
, min_unbound(0)
, max_unbound(0)
, enumeration(false)
{
ScalePoints sp;
switch((AutomationType)parameter.type()) {
case GainAutomation:
upper = Config->get_max_gain();
normal = 1.0f;
break;
case BusSendLevel:
upper = Config->get_max_gain ();
normal = 1.0f;
break;
case BusSendEnable:
normal = 1.0f;
toggled = true;
break;
case TrimAutomation:
upper = 10; // +20dB
lower = .1; // -20dB
normal = 1.0f;
break;
case PanAzimuthAutomation:
normal = 0.5f; // there really is no _normal but this works for stereo, sort of
upper = 1.0f;
break;
case PanWidthAutomation:
lower = -1.0;
upper = 1.0;
normal = 0.0f;
break;
case RecEnableAutomation:
case RecSafeAutomation:
lower = 0.0;
upper = 1.0;
toggled = true;
break;
case PluginAutomation:
case FadeInAutomation:
case FadeOutAutomation:
case EnvelopeAutomation:
upper = 2.0f;
normal = 1.0f;
break;
case SoloAutomation:
case MuteAutomation:
upper = 1.0f;
normal = 0.0f;
toggled = true;
break;
case MidiCCAutomation:
case MidiPgmChangeAutomation:
case MidiChannelPressureAutomation:
case MidiNotePressureAutomation:
lower = 0.0;
normal = 0.0;
upper = 127.0;
break;
case MidiPitchBenderAutomation:
lower = 0.0;
normal = 8192.0;
upper = 16383.0;
break;
case PhaseAutomation:
toggled = true;
break;
case MonitoringAutomation:
enumeration = true;
integer_step = true;
lower = MonitorAuto;
upper = MonitorDisk; /* XXX bump when we add MonitorCue */
break;
case SoloIsolateAutomation:
toggled = true;
break;
case SoloSafeAutomation:
toggled = true;
break;
default:
break;
}
update_steps();
}
ParameterDescriptor::ParameterDescriptor()
: Evoral::ParameterDescriptor()
, key((uint32_t)-1)
, datatype(Variant::NOTHING)
, type(NullAutomation)
, unit(NONE)
, step(0)
, smallstep(0)
, largestep(0)
, integer_step(false)
, logarithmic(false)
, sr_dependent(false)
, min_unbound(0)
, max_unbound(0)
, enumeration(false)
{}
void
ParameterDescriptor::update_steps()
{
if (unit == ParameterDescriptor::MIDI_NOTE) {
step = smallstep = 1; // semitone
largestep = 12; // octave
} else if (type == GainAutomation || type == TrimAutomation) {
/* dB_coeff_step gives a step normalized for [0, max_gain]. This is
like "slider position", so we convert from "slider position" to gain
to have the correct unit here. */
largestep = slider_position_to_gain(dB_coeff_step(upper));
step = slider_position_to_gain(largestep / 10.0);
smallstep = step;
} else {
/* note that LV2Plugin::get_parameter_descriptor ()
* overrides this is lv2:rangeStep is set for a port.
*/
const float delta = upper - lower;
/* 30 happens to be the total number of steps for a fader with default
max gain of 2.0 (6 dB), so we use 30 here too for consistency. */
step = smallstep = (delta / 300.0f);
largestep = (delta / 30.0f);
if (logarithmic) {
/* Steps are linear, but we map them with pow like values (in
internal_to_interface). Thus, they are applied exponentially,
which means too few steps. So, divide to get roughly the
desired number of steps (30). This is not mathematically
precise but seems to be about right for the controls I tried.
If you're reading this, you've probably found a case where that
isn't true, and somebody needs to sit down with a piece of paper
and actually do the math. */
smallstep = smallstep / logf(30.0f);
step = step / logf(30.0f);
largestep = largestep / logf(30.0f);
} else if (integer_step) {
smallstep = 1.0;
step = std::max(1.f, rintf (step));
largestep = std::max(1.f, rintf (largestep));
}
}
}
std::string
ParameterDescriptor::midi_note_name (const uint8_t b)
{
char buf[16];
if (b > 127) {
snprintf(buf, sizeof(buf), "%d", b);
return buf;
}
static const char* notes[] = {
S_("Note|C"),
S_("Note|C#"),
S_("Note|D"),
S_("Note|D#"),
S_("Note|E"),
S_("Note|F"),
S_("Note|F#"),
S_("Note|G"),
S_("Note|G#"),
S_("Note|A"),
S_("Note|A#"),
S_("Note|B")
};
/* MIDI note 0 is in octave -1 (in scientific pitch notation) */
const int octave = b / 12 - 1;
snprintf (buf, sizeof (buf), "%s%d", notes[b % 12], octave);
return buf;
}
} // namespace ARDOUR
|
