From fa791ae9cc97a5d26a8050c7be7b7b5c0eb91ded Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 14 Jan 2021 01:47:25 +0100
Subject: [PATCH] Static input port meters, ignore dynamic ports for now

Hotplugging devices will need to be special-cased.
Currently there is no API to notify the PortManager about
hotplugged devices.
---
 libs/ardour/port_manager.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libs/ardour/port_manager.cc b/libs/ardour/port_manager.cc
index f801017478..688751df21 100644
--- a/libs/ardour/port_manager.cc
+++ b/libs/ardour/port_manager.cc
@@ -1487,6 +1487,11 @@ PortManager::run_input_meters (pframes_t n_samples, samplecnt_t rate)
 			continue;
 		}
 
+		if (_audio_port_meters.find (*p) == _audio_port_meters.end () || _audio_port_scopes.find (*p) == _audio_port_scopes.end ()) {
+			/* do not allocate ports during normal operation */
+			continue;
+		}
+
 		if (reset) {
 			_audio_port_meters[*p].reset ();
 		}
@@ -1530,6 +1535,11 @@ PortManager::run_input_meters (pframes_t n_samples, samplecnt_t rate)
 			continue;
 		}
 
+		if (_midi_port_meters.find (*p) == _midi_port_meters.end () || _midi_port_monitors.find (*p) == _midi_port_monitors.end ()) {
+			/* do not allocate ports during normal operation */
+			continue;
+		}
+
 		for (size_t i = 0; i < 17; ++i) {
 			/* falloff */
 			if (_midi_port_meters[*p].chn_active[i] > 1e-10) {