Fix crash on double-click of show-audio button.

[dcpomatic.git] / src / lib / audio_content.cc

diff --git a/src/lib/audio_content.cc b/src/lib/audio_content.cc
index 04823d1e6f12a0aa653a6c6a0f3a3c9ae57af29c..97372b962a7285368d2317d1d3be5c769d313eb4 100644 (file)
--- a/src/lib/audio_content.cc
+++ b/src/lib/audio_content.cc
@@ -119,17 +119,17 @@ AudioContent::set_audio_delay (int d)
        signal_changed (AudioContentProperty::AUDIO_DELAY);
 }
 
-void
+boost::signals2::connection
 AudioContent::analyse_audio (boost::function<void()> finished)
 {
        shared_ptr<const Film> film = _film.lock ();
-       if (!film) {
-               return;
-       }
+       assert (film);
        
        shared_ptr<AnalyseAudioJob> job (new AnalyseAudioJob (film, dynamic_pointer_cast<AudioContent> (shared_from_this())));
-       job->Finished.connect (finished);
+       boost::signals2::connection c = job->Finished.connect (finished);
        JobManager::instance()->add (job);
+
+       return c;
 }
 
 boost::filesystem::path