/*
- Copyright (C) 2006 Paul Davis
-
+ Copyright (C) 2006 Paul Davis
+
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/meter.h"
#include <algorithm>
#include <cmath>
+
+#include "pbd/compose.h"
+
+#include "ardour/audio_buffer.h"
#include "ardour/buffer_set.h"
-#include "ardour/peak.h"
#include "ardour/dB.h"
-#include "ardour/session.h"
+#include "ardour/meter.h"
#include "ardour/midi_buffer.h"
-#include "ardour/audio_buffer.h"
+#include "ardour/session.h"
+#include "ardour/rc_configuration.h"
#include "ardour/runtime_functions.h"
using namespace std;
using namespace ARDOUR;
-sigc::signal<void> Metering::Meter;
-Glib::StaticMutex Metering::m_meter_signal_lock;
+PBD::Signal0<void> Metering::Meter;
-sigc::connection
-Metering::connect (sigc::slot<void> the_slot)
+PeakMeter::PeakMeter (Session& s, const std::string& name)
+ : Processor (s, string_compose ("meter-%1", name))
{
- // SignalProcessor::Meter is emitted from another thread so the
- // Meter signal must be protected.
- Glib::Mutex::Lock guard (m_meter_signal_lock);
- return Meter.connect (the_slot);
+ Kmeterdsp::init(s.nominal_frame_rate());
}
-void
-Metering::disconnect (sigc::connection& c)
+PeakMeter::~PeakMeter ()
{
- Glib::Mutex::Lock guard (m_meter_signal_lock);
- c.disconnect ();
+ while (_kmeter.size() > 0) {
+ delete (_kmeter.back());
+ _kmeter.pop_back();
+ }
}
-/**
- Update the meters.
-
- The meter signal lock is taken to prevent modification of the
- Meter signal while updating the meters, taking the meter signal
- lock prior to taking the io_lock ensures that all IO will remain
- valid while metering.
-*/
-void
-Metering::update_meters()
-{
- Glib::Mutex::Lock guard (m_meter_signal_lock);
- Meter(); /* EMIT SIGNAL */
-}
/** Get peaks from @a bufs
* Input acceptance is lenient - the first n buffers from @a bufs will
* be set to 0.
*/
void
-PeakMeter::run_in_place (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
+PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
{
- const uint32_t n_audio = min(_configured_input.n_audio(), bufs.count().n_audio());
- const uint32_t n_midi = min(_configured_input.n_midi(), bufs.count().n_midi());
-
+ if (!_active && !_pending_active) {
+ return;
+ }
+
+ // 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());
+
uint32_t n = 0;
-
+
// Meter MIDI in to the first n_midi peaks
for (uint32_t i = 0; i < n_midi; ++i, ++n) {
float val = 0.0f;
- for (MidiBuffer::iterator e = bufs.get_midi(i).begin(); e != bufs.get_midi(i).end(); ++e) {
- const Evoral::MIDIEvent<nframes_t> ev(*e, false);
+ MidiBuffer& buf (bufs.get_midi(i));
+
+ for (MidiBuffer::iterator e = buf.begin(); e != buf.end(); ++e) {
+ const Evoral::MIDIEvent<framepos_t> ev(*e, false);
if (ev.is_note_on()) {
- const float this_vel = log(ev.buffer()[2] / 127.0 * (M_E*M_E-M_E) + M_E) - 1.0;
+ const float this_vel = ev.buffer()[2] / 127.0;
if (this_vel > val) {
val = this_vel;
}
}
}
}
- _peak_power[n] = val;
+ _peak_signal[n] = max (val, _peak_signal[n]);
}
// Meter audio in to the rest of the peaks
for (uint32_t i = 0; i < n_audio; ++i, ++n) {
- _peak_power[n] = compute_peak (bufs.get_audio(i).data(), nframes, _peak_power[n]);
+ _peak_signal[n] = compute_peak (bufs.get_audio(i).data(), nframes, _peak_signal[n]);
+ if (/* TODO use separate bit-flags for mixer,meterbridge,.. */ /* 1 || */ _meter_type & MeterKrms) {
+ _kmeter[i]->process(bufs.get_audio(i).data(), nframes);
+ }
}
// Zero any excess peaks
- for (uint32_t i = n; i < _peak_power.size(); ++i) {
- _peak_power[i] = 0.0f;
+ for (uint32_t i = n; i < _peak_signal.size(); ++i) {
+ _peak_signal[i] = 0.0f;
}
+
+ _active = _pending_active;
}
void
PeakMeter::reset ()
{
- for (size_t i = 0; i < _peak_power.size(); ++i) {
- _peak_power[i] = 0.0f;
+ for (size_t i = 0; i < _peak_signal.size(); ++i) {
+ _peak_signal[i] = 0.0f;
}
}
{
for (size_t i = 0; i < _max_peak_power.size(); ++i) {
_max_peak_power[i] = -INFINITY;
+ _max_peak_signal[i] = 0;
}
}
if (out != in) { // always 1:1
return false;
}
-
- uint32_t limit = in.n_total();
-
- while (_peak_power.size() > limit) {
- _peak_power.pop_back();
+
+ current_meters = in;
+
+ reset_max_channels (in);
+
+ return Processor::configure_io (in, out);
+}
+
+void
+PeakMeter::reflect_inputs (const ChanCount& in)
+{
+ current_meters = in;
+
+ const size_t limit = min (_peak_signal.size(), (size_t) current_meters.n_total ());
+ const size_t n_midi = min (_peak_signal.size(), (size_t) current_meters.n_midi());
+ const size_t n_audio = current_meters.n_audio();
+
+ for (size_t n = 0; n < limit; ++n) {
+ if (n < n_midi) {
+ _visible_peak_power[n] = 0;
+ } else {
+ _visible_peak_power[n] = -INFINITY;
+ }
+ }
+
+ for (size_t n = 0; n < n_audio; ++n) {
+ _kmeter[n]->reset();
+ }
+
+ reset_max();
+
+ ConfigurationChanged (in, in); /* EMIT SIGNAL */
+}
+
+void
+PeakMeter::reset_max_channels (const ChanCount& chn)
+{
+ uint32_t const limit = chn.n_total();
+ const size_t n_audio = chn.n_audio();
+
+ while (_peak_signal.size() > limit) {
+ _peak_signal.pop_back();
_visible_peak_power.pop_back();
+ _max_peak_signal.pop_back();
_max_peak_power.pop_back();
}
- while (_peak_power.size() < limit) {
- _peak_power.push_back(0);
+ while (_peak_signal.size() < limit) {
+ _peak_signal.push_back(0);
_visible_peak_power.push_back(minus_infinity());
+ _max_peak_signal.push_back(0);
_max_peak_power.push_back(minus_infinity());
}
- assert(_peak_power.size() == limit);
+ assert(_peak_signal.size() == limit);
assert(_visible_peak_power.size() == limit);
+ assert(_max_peak_signal.size() == limit);
assert(_max_peak_power.size() == limit);
- return Processor::configure_io (in, out);
+ /* alloc/free other audio-only meter types. */
+ while (_kmeter.size() > n_audio) {
+ delete (_kmeter.back());
+ _kmeter.pop_back();
+ }
+ while (_kmeter.size() < n_audio) {
+ _kmeter.push_back(new Kmeterdsp());
+ }
+ assert(_kmeter.size() == n_audio);
}
/** To be driven by the Meter signal from IO.
void
PeakMeter::meter ()
{
- assert(_visible_peak_power.size() == _peak_power.size());
+ if (!_active) {
+ return;
+ }
- const size_t limit = _peak_power.size();
+ assert(_visible_peak_power.size() == _peak_signal.size());
+
+ const size_t limit = min (_peak_signal.size(), (size_t) current_meters.n_total ());
+ const size_t n_midi = min (_peak_signal.size(), (size_t) current_meters.n_midi());
for (size_t n = 0; n < limit; ++n) {
/* grab peak since last read */
- float new_peak = _peak_power[n]; /* XXX we should use atomic exchange from here ... */
- _peak_power[n] = 0; /* ... to here */
-
+ float new_peak = _peak_signal[n]; /* XXX we should use atomic exchange from here ... */
+ _peak_signal[n] = 0; /* ... to here */
+
+ if (n < n_midi) {
+ _max_peak_power[n] = -INFINITY; // std::max (new_peak, _max_peak_power[n]); // XXX
+ _max_peak_signal[n] = 0;
+ if (Config->get_meter_falloff() == 0.0f || new_peak > _visible_peak_power[n]) {
+ ;
+ } else {
+ /* empirical WRT to falloff times , 0.01f ^= 100 Hz update rate */
+#if 1
+ new_peak = _visible_peak_power[n] - _visible_peak_power[n] * Config->get_meter_falloff() * 0.01f * 0.05f;
+#else
+ new_peak = _visible_peak_power[n] - sqrt(_visible_peak_power[n] * Config->get_meter_falloff() * 0.01f * 0.0002f);
+#endif
+ if (new_peak < (1.0 / 512.0)) new_peak = 0;
+ }
+ _visible_peak_power[n] = new_peak;
+ continue;
+ }
+
+ /* AUDIO */
+
/* compute new visible value using falloff */
+ _max_peak_signal[n] = std::max(new_peak, _max_peak_signal[n]);
+
if (new_peak > 0.0) {
- new_peak = coefficient_to_dB (new_peak);
+ new_peak = fast_coefficient_to_dB (new_peak);
} else {
new_peak = minus_infinity();
}
-
+
/* update max peak */
-
+
_max_peak_power[n] = std::max (new_peak, _max_peak_power[n]);
-
+
if (Config->get_meter_falloff() == 0.0f || new_peak > _visible_peak_power[n]) {
_visible_peak_power[n] = new_peak;
} else {
}
}
+float
+PeakMeter::meter_level(uint32_t n, MeterType type) {
+ switch (type) {
+ case MeterKrms:
+ {
+ const uint32_t n_midi = current_meters.n_midi();
+ if ((n - n_midi) < _kmeter.size()) {
+ return fast_coefficient_to_dB(_kmeter[n]->read());
+ }
+ return minus_infinity();
+ }
+ case MeterPeak:
+ return peak_power(n);
+ case MeterMaxSignal:
+ if (n < _max_peak_signal.size()) {
+ return _max_peak_signal[n];
+ } else {
+ return minus_infinity();
+ }
+ default:
+ case MeterMaxPeak:
+ return max_peak_power(n);
+ }
+}
+void
+PeakMeter::set_type(MeterType t)
+{
+ _meter_type = t;
+
+ if (t & MeterKrms) {
+ const size_t n_audio = current_meters.n_audio();
+ for (size_t n = 0; n < n_audio; ++n) {
+ _kmeter[n]->reset();
+ }
+ }
+}
+
XMLNode&
PeakMeter::state (bool full_state)
{
return node;
}
+
projects / ardour.git / blobdiff