audioencoder: avoid setting output caps twice

... which may not be handled or appreciated well downstream,
e.g. muxers only performing header setup once.

diff --git a/gst-libs/gst/audio/gstaudioencoder.c b/gst-libs/gst/audio/gstaudioencoder.c
index 6dc922c..1ae45ab 100644 (file)
--- a/gst-libs/gst/audio/gstaudioencoder.c
+++ b/gst-libs/gst/audio/gstaudioencoder.c
@@ -2530,6 +2530,9 @@ gst_audio_encoder_set_output_format (GstAudioEncoder * enc, GstCaps * caps)
   if (!res)
     goto done;
 
+  /* clear reconfigure so we don't set caps twice */
+  gst_pad_check_reconfigure (enc->srcpad);
+
   query = gst_query_new_allocation (caps, TRUE);
   if (!gst_pad_peer_query (enc->srcpad, query)) {
     GST_DEBUG_OBJECT (enc, "didn't get downstream ALLOCATION hints");