#include <algorithm>
#include <cmath>
+#include <limits>
#include "pbd/compose.h"
#include "ardour/dB.h"
#include "ardour/meter.h"
#include "ardour/midi_buffer.h"
+#include "ardour/session.h"
#include "ardour/rc_configuration.h"
#include "ardour/runtime_functions.h"
PBD::Signal0<void> Metering::Meter;
PeakMeter::PeakMeter (Session& s, const std::string& name)
- : Processor (s, string_compose ("meter-%1", name))
+ : Processor (s, string_compose ("meter-%1", name))
{
+ Kmeterdsp::init(s.nominal_frame_rate());
+ Iec1ppmdsp::init(s.nominal_frame_rate());
+ Iec2ppmdsp::init(s.nominal_frame_rate());
+ Vumeterdsp::init(s.nominal_frame_rate());
+ _pending_active = true;
+ _meter_type = MeterPeak;
+}
+
+PeakMeter::~PeakMeter ()
+{
+ while (_kmeter.size() > 0) {
+ delete (_kmeter.back());
+ delete (_iec1meter.back());
+ delete (_iec2meter.back());
+ delete (_vumeter.back());
+ _kmeter.pop_back();
+ _iec1meter.pop_back();
+ _iec2meter.pop_back();
+ _vumeter.pop_back();
+ }
}
* Input acceptance is lenient - the first n buffers from @a bufs will
* be metered, where n was set by the last call to setup(), excess meters will
* be set to 0.
+ *
+ * (runs in jack realtime context)
*/
void
PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
}
}
}
- _peak_power[n] = max (val, _peak_power[n]);
+ _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 (_meter_type & (MeterKrms | MeterK20 | MeterK14)) {
+ _kmeter[i]->process(bufs.get_audio(i).data(), nframes);
+ }
+ if (_meter_type & (MeterIEC1DIN | MeterIEC1NOR)) {
+ _iec1meter[i]->process(bufs.get_audio(i).data(), nframes);
+ }
+ if (_meter_type & (MeterIEC2BBC | MeterIEC2EBU)) {
+ _iec2meter[i]->process(bufs.get_audio(i).data(), nframes);
+ }
+ if (_meter_type & MeterVU) {
+ _vumeter[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 n = 0; n < _kmeter.size(); ++n) {
+ _kmeter[n]->reset();
+ _iec1meter[n]->reset();
+ _iec2meter[n]->reset();
+ _vumeter[n]->reset();
}
}
PeakMeter::reset_max ()
{
for (size_t i = 0; i < _max_peak_power.size(); ++i) {
- _max_peak_power[i] = -INFINITY;
+ _max_peak_power[i] = -std::numeric_limits<float>::infinity();
+ _max_peak_signal[i] = 0;
+ }
+
+ const size_t n_midi = min (_peak_signal.size(), (size_t) current_meters.n_midi());
+
+ for (size_t n = 0; n < _peak_signal.size(); ++n) {
+ if (n < n_midi) {
+ _visible_peak_power[n] = 0;
+ } else {
+ _visible_peak_power[n] = -std::numeric_limits<float>::infinity();
+ }
}
}
bool
-PeakMeter::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
+PeakMeter::can_support_io_configuration (const ChanCount& in, ChanCount& out)
{
out = in;
return true;
void
PeakMeter::reflect_inputs (const ChanCount& in)
{
- current_meters = in;
-
- const size_t limit = min (_peak_power.size(), (size_t) current_meters.n_total ());
- const size_t n_midi = min (_peak_power.size(), (size_t) current_meters.n_midi());
-
- for (size_t n = 0; n < limit; ++n) {
- if (n < n_midi) {
- _visible_peak_power[n] = 0;
- } else {
- _visible_peak_power[n] = -INFINITY;
+ for (uint32_t i = in.n_total(); i < current_meters.n_total(); ++i) {
+ if (i < _peak_signal.size()) {
+ _peak_signal[i] = 0.0f;
}
}
+ for (uint32_t i = in.n_audio(); i < current_meters.n_audio(); ++i) {
+ if (i >= _kmeter.size()) continue;
+ _kmeter[i]->reset();
+ _iec1meter[i]->reset();
+ _iec2meter[i]->reset();
+ _vumeter[i]->reset();
+ }
+
+ current_meters = in;
reset_max();
ConfigurationChanged (in, in); /* EMIT SIGNAL */
PeakMeter::reset_max_channels (const ChanCount& chn)
{
uint32_t const limit = chn.n_total();
+ const size_t n_audio = chn.n_audio();
- while (_peak_power.size() > limit) {
- _peak_power.pop_back();
+ 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);
+
+ /* alloc/free other audio-only meter types. */
+ while (_kmeter.size() > n_audio) {
+ delete (_kmeter.back());
+ delete (_iec1meter.back());
+ delete (_iec2meter.back());
+ delete (_vumeter.back());
+ _kmeter.pop_back();
+ _iec1meter.pop_back();
+ _iec2meter.pop_back();
+ _vumeter.pop_back();
+ }
+ while (_kmeter.size() < n_audio) {
+ _kmeter.push_back(new Kmeterdsp());
+ _iec1meter.push_back(new Iec1ppmdsp());
+ _iec2meter.push_back(new Iec2ppmdsp());
+ _vumeter.push_back(new Vumeterdsp());
+ }
+ assert(_kmeter.size() == n_audio);
+ assert(_iec1meter.size() == n_audio);
+ assert(_iec2meter.size() == n_audio);
+ assert(_vumeter.size() == n_audio);
+
+ reset();
+ reset_max();
}
/** To be driven by the Meter signal from IO.
return;
}
- assert(_visible_peak_power.size() == _peak_power.size());
+ // TODO block this thread while PeakMeter::reset_max_channels() is
+ // reallocating channels.
+ // (may happen with Session > New: old session not yet closed,
+ // meter-thread still active while new one is initializing and
+ // maybe on other occasions, too)
+ if ( (_visible_peak_power.size() != _peak_signal.size())
+ || (_max_peak_power.size() != _peak_signal.size())
+ || (_max_peak_signal.size() != _peak_signal.size())
+ ) {
+ return;
+ }
+
+ 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 limit = min (_peak_power.size(), (size_t) current_meters.n_total ());
- const size_t n_midi = min (_peak_power.size(), (size_t) current_meters.n_midi());
+ /* 0.01f ^= 100 Hz update rate */
+ const float midi_meter_falloff = Config->get_meter_falloff() * 0.01f;
+ /* kmeters: 24dB / 2 sec */
+ const float audio_meter_falloff = (_meter_type & (MeterK20 | MeterK14)) ? 0.12f : midi_meter_falloff;
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 (fast_coefficient_to_dB(new_peak), _max_peak_power[n]); // XXX
- if (Config->get_meter_falloff() == 0.0f || new_peak > _visible_peak_power[n]) {
+ _max_peak_power[n] = -std::numeric_limits<float>::infinity(); // std::max (new_peak, _max_peak_power[n]); // XXX
+ _max_peak_signal[n] = 0;
+ if (midi_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
+ /* empirical algorithm WRT to audio falloff times */
+ new_peak = _visible_peak_power[n] - sqrt(_visible_peak_power[n] * midi_meter_falloff * 0.0002f);
if (new_peak < (1.0 / 512.0)) new_peak = 0;
}
_visible_peak_power[n] = new_peak;
/* 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 = fast_coefficient_to_dB (new_peak);
+ new_peak = accurate_coefficient_to_dB (new_peak);
} else {
new_peak = minus_infinity();
}
_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]) {
+ if (audio_meter_falloff == 0.0f || new_peak > _visible_peak_power[n]) {
_visible_peak_power[n] = new_peak;
} else {
// do falloff
- new_peak = _visible_peak_power[n] - (Config->get_meter_falloff() * 0.01f);
- _visible_peak_power[n] = std::max (new_peak, -INFINITY);
+ new_peak = _visible_peak_power[n] - (audio_meter_falloff);
+ _visible_peak_power[n] = std::max (new_peak, -std::numeric_limits<float>::infinity());
+ }
+ }
+}
+
+#define CHECKSIZE(MTR) (n < MTR.size() + n_midi && n >= n_midi)
+
+float
+PeakMeter::meter_level(uint32_t n, MeterType type) {
+ switch (type) {
+ case MeterKrms:
+ case MeterK20:
+ case MeterK14:
+ {
+ const uint32_t n_midi = current_meters.n_midi();
+ if (CHECKSIZE(_kmeter)) {
+ return accurate_coefficient_to_dB (_kmeter[n - n_midi]->read());
+ }
+ }
+ break;
+ case MeterIEC1DIN:
+ case MeterIEC1NOR:
+ {
+ const uint32_t n_midi = current_meters.n_midi();
+ if (CHECKSIZE(_iec1meter)) {
+ return accurate_coefficient_to_dB (_iec1meter[n - n_midi]->read());
+ }
+ }
+ break;
+ case MeterIEC2BBC:
+ case MeterIEC2EBU:
+ {
+ const uint32_t n_midi = current_meters.n_midi();
+ if (CHECKSIZE(_iec2meter)) {
+ return accurate_coefficient_to_dB (_iec2meter[n - n_midi]->read());
+ }
+ }
+ break;
+ case MeterVU:
+ {
+ const uint32_t n_midi = current_meters.n_midi();
+ if (CHECKSIZE(_vumeter)) {
+ return accurate_coefficient_to_dB (_vumeter[n - n_midi]->read());
+ }
+ }
+ break;
+ case MeterPeak:
+ return peak_power(n);
+ case MeterMaxSignal:
+ if (n < _max_peak_signal.size()) {
+ return _max_peak_signal[n];
+ }
+ break;
+ default:
+ case MeterMaxPeak:
+ if (n < _max_peak_power.size()) {
+ return _max_peak_power[n];
+ }
+ break;
+ }
+ return minus_infinity();
+}
+
+void
+PeakMeter::set_type(MeterType t)
+{
+ if (t == _meter_type) {
+ return;
+ }
+
+ _meter_type = t;
+
+ if (t & (MeterKrms | MeterK20 | MeterK14)) {
+ const size_t n_audio = current_meters.n_audio();
+ for (size_t n = 0; n < n_audio; ++n) {
+ _kmeter[n]->reset();
}
}
+ if (t & (MeterIEC1DIN | MeterIEC1NOR)) {
+ const size_t n_audio = current_meters.n_audio();
+ for (size_t n = 0; n < n_audio; ++n) {
+ _iec1meter[n]->reset();
+ }
+ }
+ if (t & (MeterIEC2BBC | MeterIEC2EBU)) {
+ const size_t n_audio = current_meters.n_audio();
+ for (size_t n = 0; n < n_audio; ++n) {
+ _iec2meter[n]->reset();
+ }
+ }
+ if (t & MeterVU) {
+ const size_t n_audio = current_meters.n_audio();
+ for (size_t n = 0; n < n_audio; ++n) {
+ _vumeter[n]->reset();
+ }
+ }
+
+ TypeChanged(t);
}
XMLNode&
node.add_property("type", "meter");
return node;
}
-
-
projects / ardour.git / blobdiff