From 7fdaff079df9a1e24ce82f060df6e4e7979558c1 Mon Sep 17 00:00:00 2001
From: David Sansome <me@davidsansome.com>
Date: Tue, 3 Dec 2013 20:31:41 +1100
Subject: [PATCH] Don't try to stop the chromaprinter event loop a second time
 after it's already been stopped.  This can happen if the song is exactly 30
 seconds long.

Fixes issue 4001
---
 src/musicbrainz/chromaprinter.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/musicbrainz/chromaprinter.cpp b/src/musicbrainz/chromaprinter.cpp
index b3766b673..ea1ae2f33 100644
--- a/src/musicbrainz/chromaprinter.cpp
+++ b/src/musicbrainz/chromaprinter.cpp
@@ -190,6 +190,9 @@ void Chromaprinter::ReportError(GstMessage* msg) {
 
 gboolean Chromaprinter::BusCallback(GstBus*, GstMessage* msg, gpointer data) {
   Chromaprinter* instance = reinterpret_cast<Chromaprinter*>(data);
+  if (instance->finishing_) {
+    return GST_BUS_DROP;
+  }
 
   switch (GST_MESSAGE_TYPE(msg)) {
     case GST_MESSAGE_ERROR:
@@ -205,6 +208,9 @@ gboolean Chromaprinter::BusCallback(GstBus*, GstMessage* msg, gpointer data) {
 
 GstBusSyncReply Chromaprinter::BusCallbackSync(GstBus*, GstMessage* msg, gpointer data) {
   Chromaprinter* instance = reinterpret_cast<Chromaprinter*>(data);
+  if (instance->finishing_) {
+    return GST_BUS_PASS;
+  }
 
   switch (GST_MESSAGE_TYPE(msg)) {
     case GST_MESSAGE_EOS: