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Atomically reset peak meters #7465

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This commit is contained in:
Robin Gareus 2020-04-07 03:56:10 +02:00
parent f24cabe9e9
commit b5ca7d352a
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 26 additions and 26 deletions
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6
libs/ardour/ardour/meter.h
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@ -2,7 +2,7 @@
* 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) 2013-2019 Robin Gareus <robin@gareus.org>
* 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
@ -97,8 +97,8 @@ private:
*/
ChanCount current_meters;
bool _reset_dpm;
bool _reset_max;
volatile gint _reset_dpm;
volatile gint _reset_max;
uint32_t _bufcnt;
std::vector<float> _peak_buffer; // internal, integrate

46
libs/ardour/meter.cc
View File

@ -2,7 +2,7 @@
* Copyright (C) 2006-2016 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) 2013-2019 Robin Gareus <robin@gareus.org>
* Copyright (C) 2013-2020 Robin Gareus <robin@gareus.org>
* Copyright (C) 2015-2016 Len Ovens <len@ovenwerks.net>
*
* This program is free software; you can redistribute it and/or modify
@ -50,8 +50,8 @@ PeakMeter::PeakMeter (Session& s, const std::string& name)
Vumeterdsp::init(s.nominal_sample_rate());
_pending_active = true;
_meter_type = MeterPeak;
_reset_dpm = true;
_reset_max = true;
_reset_dpm = 1;
_reset_max = 1;
_bufcnt = 0;
_combined_peak = 0;
}
@ -94,16 +94,13 @@ PeakMeter::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end
if (!_active && !_pending_active) {
return;
}
const bool do_reset_max = _reset_max;
// XXX max-peak is set from DPM's peak-buffer, so DPM also needs to be reset in sync:
const bool do_reset_dpm = _reset_dpm || do_reset_max;
_reset_max = false;
_reset_dpm = false;
const bool reset_max = g_atomic_int_compare_and_exchange (&_reset_max, 1, 0);
/* max-peak is set from DPM's peak-buffer, so DPM also needs to be reset in sync */
const bool reset_dpm = g_atomic_int_compare_and_exchange (&_reset_dpm, 1, 0) || reset_max;
_combined_peak = 0;
// cerr << "meter " << name() << " runs with " << bufs.available() << " inputs\n";
const uint32_t n_audio = min (current_meters.n_audio(), bufs.count().n_audio());
const uint32_t n_midi = min (current_meters.n_midi(), bufs.count().n_midi());
@ -113,10 +110,10 @@ PeakMeter::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end
const uint32_t zoh = _session.nominal_sample_rate() * .021;
_bufcnt += nframes;
// Meter MIDI in to the first n_midi peaks
/* Meter MIDI */
for (uint32_t i = 0; i < n_midi; ++i, ++n) {
float val = 0.0f;
if (do_reset_dpm) {
if (reset_dpm) {
_peak_power[n] = 0;
}
const MidiBuffer& buf (bufs.get_midi(i));
@ -150,33 +147,33 @@ PeakMeter::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end
_max_peak_signal[n] = 0;
}
// Meter audio in to the rest of the peaks
/* Audio Meters */
for (uint32_t i = 0; i < n_audio; ++i, ++n) {
if (bufs.get_audio(i).silent()) {
_peak_buffer[n] = 0;
} else {
_peak_buffer[n] = compute_peak (bufs.get_audio(i).data(), nframes, _peak_buffer[n]);
_peak_buffer[n] = std::min (_peak_buffer[n], 100.f); // cut off at +40dBFS for falloff.
_max_peak_signal[n] = std::max(_peak_buffer[n], _max_peak_signal[n]); // todo sync reset
_max_peak_signal[n] = std::max(_peak_buffer[n], _max_peak_signal[n]);
_combined_peak = std::max(_peak_buffer[n], _combined_peak);
}
if (do_reset_max) {
if (reset_max) {
_max_peak_signal[n] = 0;
}
if (do_reset_dpm) {
if (reset_dpm) {
_peak_buffer[n] = 0;
_peak_power[n] = -std::numeric_limits<float>::infinity();
} else {
// falloff
/* falloff */
if (_peak_power[n] > -318.8f) {
_peak_power[n] -= falloff_dB;
} else {
_peak_power[n] = -std::numeric_limits<float>::infinity();
}
_peak_power[n] = max(_peak_power[n], accurate_coefficient_to_dB(_peak_buffer[n]));
// integration buffer, retain peaks > 49Hz
/* integration buffer, retain peaks > 49Hz */
if (_bufcnt > zoh) {
_peak_buffer[n] = 0;
}
@ -196,12 +193,16 @@ PeakMeter::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end
}
}
// Zero any excess peaks
/* Zero any excess peaks */
for (uint32_t i = n; i < _peak_power.size(); ++i) {
_peak_power[i] = -std::numeric_limits<float>::infinity();
_max_peak_signal[n] = 0;
}
if (reset_dpm) {
_combined_peak = 0;
}
if (_bufcnt > zoh) {
_bufcnt = 0;
}
@ -213,7 +214,7 @@ void
PeakMeter::reset ()
{
if (_active || _pending_active) {
_reset_dpm = true;
g_atomic_int_set (&_reset_dpm, 1);
} else {
for (size_t i = 0; i < _peak_power.size(); ++i) {
_peak_power[i] = -std::numeric_limits<float>::infinity();
@ -225,7 +226,7 @@ PeakMeter::reset ()
}
}
// these are handled async just fine.
/* these are handled async just fine. */
for (size_t n = 0; n < _kmeter.size(); ++n) {
_kmeter[n]->reset();
_iec1meter[n]->reset();
@ -238,7 +239,7 @@ void
PeakMeter::reset_max ()
{
if (_active || _pending_active) {
_reset_max = true;
g_atomic_int_set (&_reset_max, 1);
return;
}
for (size_t i = 0; i < _max_peak_signal.size(); ++i) {
@ -283,7 +284,6 @@ PeakMeter::reflect_inputs (const ChanCount& in)
reset();
current_meters = in;
reset_max();
// ConfigurationChanged() postponed
}
void