X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmeter.cc;h=f239a1c4b7025075009d33e568443bd4bee643d0;hb=9cb678ebcc2ca0c7993bdd182c9e6ad1f8adf09a;hp=7f05cf103d3ff360a743e88f730b46c19aafb788;hpb=997dd32d5ea12ec9412858ac0bdbc88e603ca8a1;p=ardour.git diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc index 7f05cf103d..f239a1c4b7 100644 --- a/libs/ardour/meter.cc +++ b/libs/ardour/meter.cc @@ -1,94 +1,86 @@ /* - 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 #include + +#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 Metering::Meter; -Glib::StaticMutex Metering::m_meter_signal_lock; +PBD::Signal0 Metering::Meter; -sigc::connection -Metering::connect (sigc::slot 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 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, 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) { - if (!_active) { + if (!_active && !_pending_active) { return; } - 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()); - + // 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 ev(*e, false); + MidiBuffer& buf (bufs.get_midi(i)); + + for (MidiBuffer::iterator e = buf.begin(); e != buf.end(); ++e) { + const Evoral::MIDIEvent 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; } @@ -99,30 +91,30 @@ PeakMeter::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nfr } } } - _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 (_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; } -} -PeakMeter::PeakMeter (Session& s, const XMLNode& node) - : Processor (s, node) -{ + _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; } } @@ -131,6 +123,7 @@ PeakMeter::reset_max () { for (size_t i = 0; i < _max_peak_power.size(); ++i) { _max_peak_power[i] = -INFINITY; + _max_peak_signal[i] = 0; } } @@ -147,26 +140,74 @@ PeakMeter::configure_io (ChanCount in, ChanCount out) 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. @@ -177,29 +218,52 @@ PeakMeter::configure_io (ChanCount in, ChanCount out) 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 */ + new_peak = _visible_peak_power[n] - sqrt(_visible_peak_power[n] * Config->get_meter_falloff() * 0.01f * 0.0002f); + 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 = accurate_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 { @@ -210,6 +274,57 @@ PeakMeter::meter () } } +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() && (n - n_midi) >= 0) { +#if 0 + return fast_coefficient_to_dB (_kmeter[n-n_midi]->read()); +#else + return accurate_coefficient_to_dB (_kmeter[n-n_midi]->read()); +#endif + } + 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: + if (n < _max_peak_power.size()) { + return _max_peak_power[n]; + } else { + return minus_infinity(); + } + } +} + +void +PeakMeter::set_type(MeterType t) +{ + if (t == _meter_type) { + return; + } + + _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(); + } + } + TypeChanged(t); +} + XMLNode& PeakMeter::state (bool full_state) { @@ -217,4 +332,3 @@ PeakMeter::state (bool full_state) node.add_property("type", "meter"); return node; } -