Disable show audio button when there is no audio (#73).

2 files changed, 19 insertions, 1 deletions

diff --git a/src/lib/film.cc b/src/lib/film.cc
index 8f545952b..20e08c037 100644
--- a/src/lib/film.cc
+++ b/src/lib/film.cc
@@ -1434,3 +1434,21 @@ Film::have_dcp () const
 
 	return true;
 }
+
+bool
+Film::has_audio () const
+{
+	if (use_content_audio()) {
+		return audio_stream();
+	}
+
+	vector<string> const e = external_audio ();
+	for (vector<string>::const_iterator i = e.begin(); i != e.end(); ++i) {
+		if (!i->empty ()) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
diff --git a/src/lib/film.h b/src/lib/film.h
index 9921acbb4..88f6fbcd7 100644
--- a/src/lib/film.h
+++ b/src/lib/film.h
@@ -327,7 +327,7 @@ public:
 	}
 
 	boost::shared_ptr<AudioStream> audio_stream () const;
-
+	bool has_audio () const;
 	
 	/* SET */