X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmeter.cc;h=289ce579db00e368d1c99403a61d4b80a7b0d281;hb=a1116ebd6f19c30c8a85200c19ec30c00337ccda;hp=60d8b694a8c349a55fd68fdd0e7ae327d4e570bc;hpb=ce259edbcdd4c9a2cd8f2a5daa8b158dd9afc928;p=ardour.git

diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc
index 60d8b694a8..289ce579db 100644
--- a/libs/ardour/meter.cc
+++ b/libs/ardour/meter.cc
@@ -46,6 +46,8 @@ PeakMeter::PeakMeter (Session& s, const std::string& name)
 	_meter_type = MeterPeak;
 	_reset_dpm = true;
 	_reset_max = true;
+	_bufcnt = 0;
+	_combined_peak = 0;
 }
 
 PeakMeter::~PeakMeter ()
@@ -76,7 +78,7 @@ PeakMeter::~PeakMeter ()
  * (runs in jack realtime context)
  */
 void
-PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
+PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, double /*speed*/, pframes_t nframes, bool)
 {
 	if (!_active && !_pending_active) {
 		return;
@@ -85,6 +87,7 @@ PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_fr
 	const bool do_reset_dpm = _reset_dpm;
 	_reset_max = false;
 	_reset_dpm = false;
+	_combined_peak = 0;
 
 	// cerr << "meter " << name() << " runs with " << bufs.available() << " inputs\n";
 
@@ -94,21 +97,26 @@ PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_fr
 	uint32_t n = 0;
 
 	const float falloff_dB = Config->get_meter_falloff() * nframes / _session.nominal_frame_rate();
-	const int zoh = _session.nominal_frame_rate() * .021;
+	const uint32_t zoh = _session.nominal_frame_rate() * .021;
 	_bufcnt += nframes;
 
 	// Meter MIDI in to the first n_midi peaks
 	for (uint32_t i = 0; i < n_midi; ++i, ++n) {
 		float val = 0.0f;
 		const MidiBuffer& buf (bufs.get_midi(i));
-		
+
 		for (MidiBuffer::const_iterator e = buf.begin(); e != buf.end(); ++e) {
-			const Evoral::MIDIEvent<framepos_t> ev(*e, false);
+			const Evoral::Event<framepos_t> ev(*e, false);
 			if (ev.is_note_on()) {
 				const float this_vel = ev.buffer()[2] / 127.0;
 				if (this_vel > val) {
 					val = this_vel;
 				}
+				if (val > 0.01) {
+					if (_combined_peak < 0.01) {
+						_combined_peak = 0.01;
+					}
+				}
 			} else {
 				val += 1.0 / bufs.get_midi(n).capacity();
 				if (val > 1.0) {
@@ -129,10 +137,12 @@ PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_fr
 	// Meter audio in to the rest of the peaks
 	for (uint32_t i = 0; i < n_audio; ++i, ++n) {
 		if (bufs.get_audio(i).silent()) {
-			;
+			_peak_buffer[n] = 0;
 		} else {
 			_peak_buffer[n] = compute_peak (bufs.get_audio(i).data(), nframes, _peak_buffer[n]);
+			_peak_buffer[n] = std::min (_peak_buffer[n], 100.f); // cut off at +40dBFS for falloff.
 			_max_peak_signal[n] = std::max(_peak_buffer[n], _max_peak_signal[n]); // todo sync reset
+			_combined_peak = std::max(_peak_buffer[n], _combined_peak);
 		}
 
 		if (do_reset_max) {
@@ -227,14 +237,23 @@ PeakMeter::can_support_io_configuration (const ChanCount& in, ChanCount& out)
 bool
 PeakMeter::configure_io (ChanCount in, ChanCount out)
 {
+	bool changed = false;
 	if (out != in) { // always 1:1
 		return false;
 	}
 
+	if (current_meters != in) {
+		changed = true;
+	}
+
 	current_meters = in;
 
 	set_max_channels (in);
 
+	if (changed) {
+		reset_max();
+	}
+
 	return Processor::configure_io (in, out);
 }
 
@@ -309,6 +328,7 @@ PeakMeter::set_max_channels (const ChanCount& chn)
 
 float
 PeakMeter::meter_level(uint32_t n, MeterType type) {
+	float mcptmp;
 	switch (type) {
 		case MeterKrms:
 		case MeterK20:
@@ -353,6 +373,9 @@ PeakMeter::meter_level(uint32_t n, MeterType type) {
 				return _peak_power[n];
 			}
 			break;
+		case MeterMCP:
+			mcptmp = _combined_peak;
+			return accurate_coefficient_to_dB(mcptmp);
 		case MeterMaxSignal:
 			assert(0);
 			break;