wavenc: Send CAPS event after the pad was activated

Otherwise the CAPS event will be dropped and we never configure any caps at
all, leading to weird behaviour in many situations. Especially header
rewriting is not going to work if a capsfilter is after wavenc.

https://bugzilla.gnome.org/show_bug.cgi?id=737735

1 files changed, 7 insertions, 3 deletions

diff --git a/gst/wavenc/gstwavenc.c b/gst/wavenc/gstwavenc.c
index 9f62fc7ac..29bfad41a 100644
--- a/gst/wavenc/gstwavenc.c
+++ b/gst/wavenc/gstwavenc.c
@@ -197,8 +197,6 @@ gst_wavenc_init (GstWavEnc * wavenc)
 
   wavenc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
   gst_pad_use_fixed_caps (wavenc->srcpad);
-  gst_pad_set_caps (wavenc->srcpad,
-      gst_static_pad_template_get_caps (&src_factory));
   gst_element_add_pad (GST_ELEMENT (wavenc), wavenc->srcpad);
 }
 
@@ -264,7 +262,10 @@ gst_wavenc_push_header (GstWavEnc * wavenc)
 
   /* seek to beginning of file */
   gst_segment_init (&segment, GST_FORMAT_BYTES);
-  gst_pad_push_event (wavenc->srcpad, gst_event_new_segment (&segment));
+  if (!gst_pad_push_event (wavenc->srcpad, gst_event_new_segment (&segment))) {
+    GST_WARNING_OBJECT (wavenc, "Seek to the beginning failed");
+    return GST_FLOW_ERROR;
+  }
 
   GST_DEBUG_OBJECT (wavenc, "writing header, meta_size=%u, audio_size=%u",
       wavenc->meta_length, wavenc->audio_length);
@@ -854,6 +855,9 @@ gst_wavenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
   }
 
   if (G_UNLIKELY (!wavenc->sent_header)) {
+    gst_pad_set_caps (wavenc->srcpad,
+        gst_static_pad_template_get_caps (&src_factory));
+
     /* starting a file, means we have to finish it properly */
     wavenc->finished_properly = FALSE;