rtpopuspay: negotiate the encoding name

Chrome uses a different encoding name that gstreamer.

https://bugzilla.gnome.org/show_bug.cgi?id=737810

diff --git a/gst/rtp/gstrtpopuspay.c b/gst/rtp/gstrtpopuspay.c
index 8cfd79d..7cd90ef 100644 (file)
--- a/gst/rtp/gstrtpopuspay.c
+++ b/gst/rtp/gstrtpopuspay.c
@@ -94,9 +94,26 @@ static gboolean
 gst_rtp_opus_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps)
 {
   gboolean res;
+  GstCaps *src_caps;
+  GstStructure *s;
+  char *encoding_name;
+
+  src_caps = gst_pad_get_allowed_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload));
+  if (src_caps) {
+    src_caps = gst_caps_truncate (src_caps);
+    src_caps = gst_caps_make_writable (src_caps);
+    s = gst_caps_get_structure (src_caps, 0);
+    gst_structure_fixate_field_string (s, "encoding-name",
+        "X-GST-OPUS-DRAFT-SPITTKA-00");
+    encoding_name = g_strdup (gst_structure_get_string (s, "encoding-name"));
+    gst_caps_unref (src_caps);
+  } else {
+    encoding_name = g_strdup ("X-GST-OPUS-DRAFT-SPITTKA-00");
+  }
 
   gst_rtp_base_payload_set_options (payload, "audio", FALSE,
-      "X-GST-OPUS-DRAFT-SPITTKA-00", 48000);
+      encoding_name, 48000);
+  g_free (encoding_name);
   res = gst_rtp_base_payload_set_outcaps (payload, NULL);
 
   return res;