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
|
/*
Copyright (C) 2025 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "simple_meters.h"
#include "wx_util.h"
#include "lib/level_calculator.h"
#include <dcp/types.h>
#include <wx/wx.h>
#include <algorithm>
static auto constexpr min_db = -70.0f;
using std::shared_ptr;
#if BOOST_VERSION >= 106100
using namespace boost::placeholders;
#endif
SimpleMeters::SimpleMeters(wxWindow* parent)
: _panel(new wxPanel(parent, wxID_ANY))
{
_panel->Bind(wxEVT_PAINT, boost::bind(&SimpleMeters::paint, this));
}
wxWindow*
SimpleMeters::get() const
{
return _panel;
}
void
SimpleMeters::paint()
{
wxPaintDC dc(_panel);
dc.SetBackground(*wxBLACK_BRUSH);
dc.Clear();
if (_peaks.empty()) {
return;
}
auto const scale = 1 / dpi_scale_factor(_panel);
dc.SetLogicalScale(scale, scale);
auto const panel_size = dcp::Size(_panel->GetSize().GetWidth() / scale, _panel->GetSize().GetHeight() / scale);
auto const channel_width = panel_size.width / _peaks.size();
int x = 0;
dc.SetBrush(*wxGREEN_BRUSH);
for (auto peak: _peaks) {
auto const peak_db = std::max(min_db, 20 * log10(peak));
dc.DrawRectangle(x, panel_size.height, channel_width, (1 - (peak_db - min_db)) * panel_size.height / (-min_db));
x += channel_width;
}
}
bool
SimpleMeters::update(shared_ptr<LevelCalculator> calculator, dcpomatic::DCPTime time)
{
if (!_panel->GetParent()->IsShown()) {
return false;
}
_peaks = calculator->get(time);
_panel->Refresh();
_panel->Update();
return true;
}
void
SimpleMeters::clear()
{
_peaks.clear();
_panel->Refresh();
_panel->Update();
}
|
