[vala/staging] gstreamer: Update from 1.15.2+ git master

[Rico Tzschichholz <ricotz src gnome org>]

commit d5717470742304c1483cc83969c4937ac6c6f2e2
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Mar 16 17:34:22 2019 +0100

    gstreamer: Update from 1.15.2+ git master

 vapi/gstreamer-1.0.vapi         | 2 +-
 vapi/gstreamer-pbutils-1.0.vapi | 2 ++
 vapi/gstreamer-video-1.0.vapi   | 6 +++++-
 3 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gstreamer-1.0.vapi b/vapi/gstreamer-1.0.vapi
index 2e4ba676c..71322f5b1 100644
--- a/vapi/gstreamer-1.0.vapi
+++ b/vapi/gstreamer-1.0.vapi
@@ -1250,7 +1250,7 @@ namespace Gst {
                public Gst.Context? get_context_unlocked (string context_type);
                [Version (since = "1.8")]
                public GLib.List<Gst.Context> get_contexts ();
-               public unowned Gst.ElementFactory get_factory ();
+               public unowned Gst.ElementFactory? get_factory ();
                [Version (since = "1.14")]
                public unowned string get_metadata (string key);
                [Version (since = "1.14")]
diff --git a/vapi/gstreamer-pbutils-1.0.vapi b/vapi/gstreamer-pbutils-1.0.vapi
index d12972ff7..62026add8 100644
--- a/vapi/gstreamer-pbutils-1.0.vapi
+++ b/vapi/gstreamer-pbutils-1.0.vapi
@@ -69,6 +69,8 @@ namespace Gst {
                        public void stop ();
                        [NoAccessorMethod]
                        public uint64 timeout { get; set construct; }
+                       [NoAccessorMethod]
+                       public bool use_cache { get; set construct; }
                        public virtual signal void discovered (Gst.PbUtils.DiscovererInfo info, GLib.Error? 
err);
                        public virtual signal void finished ();
                        public virtual signal void source_setup (Gst.Element source);
diff --git a/vapi/gstreamer-video-1.0.vapi b/vapi/gstreamer-video-1.0.vapi
index 31d98c726..e5c87101f 100644
--- a/vapi/gstreamer-video-1.0.vapi
+++ b/vapi/gstreamer-video-1.0.vapi
@@ -909,7 +909,11 @@ namespace Gst {
                        SMPTE240M,
                        FILM,
                        BT2020,
-                       ADOBERGB
+                       ADOBERGB,
+                       SMPTEST428,
+                       SMPTERP431,
+                       SMPTEEG432,
+                       EBU3213
                }
                [CCode (cheader_filename = "gst/video/video.h", cprefix = "GST_VIDEO_COLOR_RANGE_", type_id = 
"gst_video_color_range_get_type ()")]
                [GIR (name = "VideoColorRange")]