1 files changed, 13 insertions, 0 deletions
diff --git a/mpcommon.c b/mpcommon.c
index b9e9296d2a..332d8e1cf4 100644
--- a/mpcommon.c
+++ b/mpcommon.c
@@ -190,3 +190,16 @@ void update_teletext(sh_video_t *sh_video, demuxer_t *demuxer, int reset)
     tvh->functions->control(tvh->priv,TV_VBI_CONTROL_MARK_UNCHANGED,NULL);
 #endif
 }
+
+int select_audio(demuxer_t* demuxer, int audio_id, char* audio_lang)
+{
+    if (audio_id == -1 && audio_lang)
+        audio_id = demuxer_audio_track_by_lang(demuxer, audio_lang);
+    if (audio_id != -1) // -1 (automatic) is the default behaviour of demuxers
+        demuxer_switch_audio(demuxer, audio_id);
+    if (audio_id == -2) { // some demuxers don't yet know how to switch to no sound
+        demuxer->audio->id = -2;
+        demuxer->audio->sh = NULL;
+    }
+    return demuxer->audio->id;
+}