wavenc: Allow setcaps to be called after a format was negotiated if it's compatible

Otherwise wavenc will fail if upstream decides to set equivalent caps or caps
with additional information later.

Thanks to Alexander Schremmer for finding this bug.

diff --git a/gst/wavenc/gstwavenc.c b/gst/wavenc/gstwavenc.c
index c3b0c57..7db0e18 100644 (file)
--- a/gst/wavenc/gstwavenc.c
+++ b/gst/wavenc/gstwavenc.c
@@ -275,7 +275,7 @@ gst_wavenc_sink_setcaps (GstPad * pad, GstCaps * caps)
 
   wavenc = GST_WAVENC (gst_pad_get_parent (pad));
 
-  if (wavenc->sent_header) {
+  if (wavenc->sent_header && !gst_caps_can_intersect (caps, GST_PAD_CAPS (pad))) {
     GST_WARNING_OBJECT (wavenc, "cannot change format in middle of stream");
     goto fail;
   }