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
|
/*
* Copyright (C) 2006-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2020 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ardour_meter_h__
#define __ardour_meter_h__
#include <vector>
#include "pbd/fastlog.h"
#include "ardour/libardour_visibility.h"
#include "ardour/processor.h"
#include "ardour/types.h"
#include "ardour/iec1ppmdsp.h"
#include "ardour/iec2ppmdsp.h"
#include "ardour/kmeterdsp.h"
#include "ardour/vumeterdsp.h"
namespace ARDOUR {
class BufferSet;
class ChanCount;
class Session;
/** Meters peaks on the input and stores them for access.
*/
class LIBARDOUR_API PeakMeter : public Processor
{
public:
PeakMeter (Session& s, const std::string& name);
~PeakMeter ();
void reset ();
void reset_max ();
std::string display_name () const;
bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
bool configure_io (ChanCount in, ChanCount out);
/* special method for meter, to ensure that it can always handle the maximum
number of streams in the route, no matter where we put it.
*/
void set_max_channels (const ChanCount&);
/* tell the meter than no matter how many channels it can handle,
`in' is the number it is actually going be handling from
now on.
*/
void reflect_inputs (const ChanCount& in);
void emit_configuration_changed ();
/** Compute peaks */
void run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool);
void activate () {}
void deactivate () {}
ChanCount input_streams () const { return current_meters; }
ChanCount output_streams () const { return current_meters; }
float meter_level (uint32_t n, MeterType type);
void set_meter_type (MeterType t);
MeterType meter_type () const { return _meter_type; }
PBD::Signal1<void, MeterType> MeterTypeChanged;
protected:
XMLNode& state ();
private:
friend class IO;
/** The number of meters that we are currently handling;
* may be different to _configured_input and _configured_output
* as it can be altered outside a \ref configure_io by \ref reflect_inputs .
*/
ChanCount current_meters;
volatile gint _reset_dpm;
volatile gint _reset_max;
uint32_t _bufcnt;
std::vector<float> _peak_buffer; // internal, integrate
std::vector<float> _peak_power; // includes accurate falloff, hence dB
std::vector<float> _max_peak_signal; // dB calculation is done on demand
float _combined_peak; // Mackie surfaces expect the highest peak of all track channels
std::vector<Kmeterdsp*> _kmeter;
std::vector<Iec1ppmdsp*> _iec1meter;
std::vector<Iec2ppmdsp*> _iec2meter;
std::vector<Vumeterdsp*> _vumeter;
MeterType _meter_type;
};
} // namespace ARDOUR
#endif // __ardour_meter_h__
|
