From 17f2862f9631e811e0a830b57cef8811d5449ea1 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 4 Feb 2023 03:20:20 +0100
Subject: [PATCH] Emit signal when resampler-quality changes

---
 libs/ardour/ardour/port.h |  1 +
 libs/ardour/port.cc       | 12 ++++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/libs/ardour/ardour/port.h b/libs/ardour/ardour/port.h
index a9fcd0f0ac..d8b2af26b2 100644
--- a/libs/ardour/ardour/port.h
+++ b/libs/ardour/ardour/port.h
@@ -139,6 +139,7 @@ public:
 
 	static PBD::Signal0<void> PortDrop;
 	static PBD::Signal0<void> PortSignalDrop;
+	static PBD::Signal0<void> ResamplerQualityChanged;
 
 	static void set_varispeed_ratio (double s); //< varispeed playback
 	static bool set_engine_ratio (double session, double engine); //< SR mismatch
diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index dc3d8b328b..fae4cf8ad1 100644
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -41,6 +41,7 @@ using namespace PBD;
 
 PBD::Signal0<void> Port::PortDrop;
 PBD::Signal0<void> Port::PortSignalDrop;
+PBD::Signal0<void> Port::ResamplerQualityChanged;
 
 bool         Port::_connecting_blocked = false;
 pframes_t    Port::_global_port_buffer_offset = 0;
@@ -729,10 +730,13 @@ Port::setup_resampler (uint32_t q)
 		_resampler_latency = q - 1;
 	}
 
-	if (port_manager && cur_quality != _resampler_quality) {
-		Glib::Threads::Mutex::Lock lm (port_manager->process_lock ());
-		port_manager->reinit (true);
-		return false;
+	if (cur_quality != _resampler_quality) {
+		ResamplerQualityChanged (); /* EMIT SIGNAL */
+		if (port_manager) {
+			Glib::Threads::Mutex::Lock lm (port_manager->process_lock ());
+			port_manager->reinit (true);
+			return false;
+		}
 	}
 	return true;
 }