[vala/staging] gstreamer: Update from 1.17.0+ git master

[Rico Tzschichholz <ricotz src gnome org>]

commit 6b574c21be7a21d6b302d258a7a263cb768a43de
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Feb 16 19:43:05 2020 +0100

    gstreamer: Update from 1.17.0+ git master

 vapi/gstreamer-base-1.0.vapi | 2 ++
 vapi/gstreamer-rtp-1.0.vapi  | 6 ++++++
 2 files changed, 8 insertions(+)
---
diff --git a/vapi/gstreamer-base-1.0.vapi b/vapi/gstreamer-base-1.0.vapi
index d1ae138cb..4f8cbe6da 100644
--- a/vapi/gstreamer-base-1.0.vapi
+++ b/vapi/gstreamer-base-1.0.vapi
@@ -799,6 +799,8 @@ namespace Gst {
                        public virtual bool propose_allocation (Gst.Query decide_query, Gst.Query query);
                        [NoWrapper]
                        public virtual bool query (Gst.PadDirection direction, Gst.Query query);
+                       [Version (since = "1.18")]
+                       public bool reconfigure ();
                        public void reconfigure_sink ();
                        public void reconfigure_src ();
                        [NoWrapper]
diff --git a/vapi/gstreamer-rtp-1.0.vapi b/vapi/gstreamer-rtp-1.0.vapi
index 495ed1afa..ba951aeff 100644
--- a/vapi/gstreamer-rtp-1.0.vapi
+++ b/vapi/gstreamer-rtp-1.0.vapi
@@ -117,6 +117,9 @@ namespace Gst {
                        public uint timestamp { get; }
                        [NoAccessorMethod]
                        public uint timestamp_offset { get; set; }
+                       [NoAccessorMethod]
+                       [Version (since = "1.18")]
+                       public uint twcc_ext_id { get; set; }
                }
                [CCode (cheader_filename = "gst/rtp/rtp.h", has_type_id = false)]
                [Compact]
@@ -316,6 +319,9 @@ namespace Gst {
                public static uint32 buffer_default_clock_rate (uint8 payload_type);
                [CCode (cheader_filename = "gst/rtp/rtp.h")]
                public static uint64 buffer_ext_timestamp (ref uint64 exttimestamp, uint32 timestamp);
+               [CCode (cheader_filename = "gst/rtp/rtp.h")]
+               [Version (since = "1.18")]
+               public static bool buffer_get_extension_onebyte_header_from_bytes (GLib.Bytes bytes, uint16 
bit_pattern, uint8 id, uint nth, [CCode (array_length_cname = "size", array_length_pos = 5.1, 
array_length_type = "guint")] out unowned uint8[] data);
                [CCode (cheader_filename = "gst/rtp/rtp.h", cname = "gst_buffer_get_rtp_source_meta")]
                [Version (since = "1.16")]
                public static unowned Gst.RTP.SourceMeta? buffer_get_rtp_source_meta (Gst.Buffer buffer);