ardour/livetrax
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midi meter updates..

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This commit is contained in:
Robin Gareus 2013-07-05 00:43:31 +02:00
parent 4a3695d2de
commit 42ee64e950
2 changed files with 27 additions and 2 deletions
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6
gtk2_ardour/level_meter.cc
View File

@ -96,10 +96,16 @@ LevelMeter::update_meters ()
return 0.0f;
}
int32_t nmidi = _meter->input_streams().n_midi();
for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
if ((*i).packed) {
peak = _meter->peak_power (n);
if (n < nmidi) {
(*i).meter->set (peak);
} else {
(*i).meter->set (log_meter (peak));
}
mpeak = _meter->max_peak_power(n);
if (mpeak > max_peak) {
max_peak = mpeak;

21
libs/ardour/meter.cc
View File

@ -68,7 +68,7 @@ PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_fr
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;
}
@ -189,6 +189,7 @@ PeakMeter::meter ()
assert(_visible_peak_power.size() == _peak_power.size());
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) {
@ -197,6 +198,24 @@ PeakMeter::meter ()
float new_peak = _peak_power[n]; /* XXX we should use atomic exchange from here ... */
_peak_power[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]) {
} 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 */
if (new_peak > 0.0) {