From 1e0e3470cb2801b158c2b826061b9a1a42443912 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Sch=C3=BCrmann?= <daschuer@mixxx.org>
Date: Tue, 7 Sep 2021 10:41:41 +0200
Subject: [PATCH] Use queued connections for automatically loading new tracks
 from AutoDJPorcessor

This ensures that the stack of slots connected to the original signal is fully processed.
Fixes https://bugs.launchpad.net/mixxx/+bug/1941743
---
 src/library/autodj/autodjfeature.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/library/autodj/autodjfeature.cpp b/src/library/autodj/autodjfeature.cpp
index 805a9bb4211..be253659871 100644
--- a/src/library/autodj/autodjfeature.cpp
+++ b/src/library/autodj/autodjfeature.cpp
@@ -60,10 +60,15 @@ AutoDJFeature::AutoDJFeature(Library* pLibrary,
     qRegisterMetaType<AutoDJProcessor::AutoDJState>("AutoDJState");
     m_pAutoDJProcessor = new AutoDJProcessor(
             this, m_pConfig, pPlayerManager, pLibrary->trackCollections(), m_iAutoDJPlaylistId);
+
+    // Connect loadTrackToPlayer signal as a queued connection to make sure all callbacks of a
+    // previous load attempt have been called (lp1941743)
     connect(m_pAutoDJProcessor,
             &AutoDJProcessor::loadTrackToPlayer,
             this,
-            &LibraryFeature::loadTrackToPlayer);
+            &LibraryFeature::loadTrackToPlayer,
+            Qt::QueuedConnection);
+
     m_playlistDao.setAutoDJProcessor(m_pAutoDJProcessor);
 
     // Create the "Crates" tree-item under the root item.