X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmeter.cc;h=a3390f9d05e43c077d72f4870a6c6e2d35fba94b;hb=4a9e79e53f0a8064b6fd593c3db6abae34fe295b;hp=31a88b16f0f206bcf121c9b6861bc0679aa6cc45;hpb=5a48f99f72c2e2f3ed313e00446dfdaa05dc5d56;p=ardour.git diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc index 31a88b16f0..a3390f9d05 100644 --- a/libs/ardour/meter.cc +++ b/libs/ardour/meter.cc @@ -1,33 +1,54 @@ /* - 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 #include #include -#include -#include -#include -#include -#include -#include -#include -namespace ARDOUR { +#include "pbd/compose.h" + +#include "ardour/audio_buffer.h" +#include "ardour/buffer_set.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" + +using namespace std; + +using namespace ARDOUR; + +PBD::Signal0 Metering::Meter; + +PeakMeter::PeakMeter (Session& s, const std::string& name) + : Processor (s, string_compose ("meter-%1", name)) +{ + Kmeterdsp::init(s.nominal_frame_rate()); +} + +PeakMeter::~PeakMeter () +{ + while (_kmeter.size() > 0) { + delete (_kmeter.back()); + _kmeter.pop_back(); + } +} /** Get peaks from @a bufs @@ -36,55 +57,62 @@ namespace ARDOUR { * be set to 0. */ void -PeakMeter::run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset) +PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool) { + 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; - uint32_t meterable = std::min(bufs.count().n_total(), (uint32_t)_peak_power.size()); - uint32_t limit = std::min (meterable, (uint32_t)bufs.count().n_midi()); - // Meter what we have (midi) - for ( ; n < limit; ++n) { - - float val = 0; + // Meter MIDI in to the first n_midi peaks + for (uint32_t i = 0; i < n_midi; ++i, ++n) { + float val = 0.0f; + MidiBuffer& buf (bufs.get_midi(i)); - // GUI needs a better MIDI meter, not much information can be - // expressed through peaks alone - for (MidiBuffer::iterator i = bufs.get_midi(n).begin(); i != bufs.get_midi(n).end(); ++i) { - const Evoral::MIDIEvent ev(*i, false); + 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; - //printf("V %d -> %f\n", (int)((Byte)ev.buffer[2]), this_vel); - if (this_vel > val) + const float this_vel = ev.buffer()[2] / 127.0; + if (this_vel > val) { val = this_vel; + } } else { val += 1.0 / bufs.get_midi(n).capacity(); - if (val > 1.0) + if (val > 1.0) { val = 1.0; + } } } - - _peak_power[n] = val; - + _peak_signal[n] = max (val, _peak_signal[n]); } - - limit = std::min (meterable, bufs.count().n_audio()); - // Meter what we have (audio) - for ( ; n < limit; ++n) { - _peak_power[n] = compute_peak (bufs.get_audio(n).data(nframes, offset), nframes, _peak_power[n]); + // Meter audio in to the rest of the peaks + for (uint32_t i = 0; i < n_audio; ++i, ++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 (size_t n = meterable; n < _peak_power.size(); ++n) { - _peak_power[n] = 0; + 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; + for (size_t i = 0; i < _peak_signal.size(); ++i) { + _peak_signal[i] = 0.0f; } } @@ -93,69 +121,151 @@ PeakMeter::reset_max () { for (size_t i = 0; i < _max_peak_power.size(); ++i) { _max_peak_power[i] = -INFINITY; + _max_peak_signal[i] = 0; } } +bool +PeakMeter::can_support_io_configuration (const ChanCount& in, ChanCount& out) const +{ + out = in; + return true; +} + bool PeakMeter::configure_io (ChanCount in, ChanCount out) { - /* we're transparent no matter what. fight the power. */ - if (out != in) { + if (out != in) { // always 1:1 return false; } - uint32_t limit = in.n_total(); + 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_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); - 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. - * Caller MUST hold io_lock! + * Caller MUST hold its own processor_lock to prevent reconfiguration + * of meter size during this call. */ + 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()); - for (size_t n = 0; n < limit; ++n) { + 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()); - /* XXX we should use atomic exchange here */ + for (size_t n = 0; n < limit; ++n) { /* grab peak since last read */ - float new_peak = _peak_power[n]; - _peak_power[n] = 0; - + 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 { @@ -166,4 +276,49 @@ PeakMeter::meter () } } -} // namespace ARDOUR +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) +{ + XMLNode& node (Processor::state (full_state)); + node.add_property("type", "meter"); + return node; +} + +