[vala/0.52] gstreamer: Cherry-pick bindings fixes from 0.56

[Rico Tzschichholz <ricotz src gnome org>]

commit 1ba7956dbb489c7ffd90c0fe0c29fe5bd80d94aa
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Nov 29 11:27:33 2021 +0100

    gstreamer: Cherry-pick bindings fixes from 0.56

 vapi/gst-editing-services-1.0.vapi | 11 ++++++-----
 vapi/gstreamer-play-1.0.vapi       |  4 ++--
 2 files changed, 8 insertions(+), 7 deletions(-)
---
diff --git a/vapi/gst-editing-services-1.0.vapi b/vapi/gst-editing-services-1.0.vapi
index 2f808a8ab..30a49a852 100644
--- a/vapi/gst-editing-services-1.0.vapi
+++ b/vapi/gst-editing-services-1.0.vapi
@@ -147,7 +147,7 @@ namespace GES {
                [Version (since = "1.18")]
                public Gst.ClockTime get_frame_time (GES.FrameNumber frame_number);
                [Version (since = "1.18")]
-               public virtual bool get_natural_framerate (int framerate_n, int framerate_d);
+               public virtual bool get_natural_framerate (out int framerate_n, out int framerate_d);
                public GES.TrackType get_supported_formats ();
                public void set_supported_formats (GES.TrackType supportedformats);
                public GES.TrackType supported_formats { get; set construct; }
@@ -156,8 +156,9 @@ namespace GES {
        public class CommandLineFormatter : GES.Formatter, GES.Extractable {
                [CCode (has_construct_function = false)]
                protected CommandLineFormatter ();
-               public static string get_help (int nargs, string commands);
-               [Version (since = "1.20")]
+               [Version (since = "1.10")]
+               public static string get_help ([CCode (array_length_cname = "nargs", array_length_pos = 0.5)] 
string[] commands);
+               [Version (since = "1.10")]
                public static string get_timeline_uri (GES.Timeline timeline);
        }
        [CCode (cheader_filename = "ges/ges.h", type_id = "ges_container_get_type ()")]
@@ -809,7 +810,7 @@ namespace GES {
                [CCode (has_construct_function = false)]
                protected TrackElementAsset ();
                [Version (since = "1.18")]
-               public virtual bool get_natural_framerate (int framerate_n, int framerate_d);
+               public virtual bool get_natural_framerate (out int framerate_n, out int framerate_d);
                public GES.TrackType get_track_type ();
                public void set_track_type (GES.TrackType type);
                public GES.TrackType track_type { get; set construct; }
@@ -944,7 +945,7 @@ namespace GES {
        [CCode (cheader_filename = "ges/ges.h", type_cname = "GESMetaContainerInterface", type_id = 
"ges_meta_container_get_type ()")]
        public interface MetaContainer : GLib.Object {
                public bool add_metas_from_string (string str);
-               public bool check_meta_registered (string meta_item, out GES.MetaFlag? flags, out GLib.Type? 
type);
+               public bool check_meta_registered (string meta_item, out GES.MetaFlag flags, out GLib.Type 
type);
                public void @foreach (GES.MetaForeachFunc func);
                public bool get_boolean (string meta_item, out bool dest);
                public bool get_date (string meta_item, out GLib.Date dest);
diff --git a/vapi/gstreamer-play-1.0.vapi b/vapi/gstreamer-play-1.0.vapi
index 3e99fc9dd..0ebedadec 100644
--- a/vapi/gstreamer-play-1.0.vapi
+++ b/vapi/gstreamer-play-1.0.vapi
@@ -289,7 +289,7 @@ namespace Gst {
                public static void play_message_parse_duration_updated (Gst.Message msg, out Gst.ClockTime 
duration);
                [CCode (cheader_filename = "gst/play/play.h", cname = "gst_play_message_parse_error")]
                [Version (since = "1.20")]
-               public static void play_message_parse_error (Gst.Message msg, out unowned GLib.Error error, 
out Gst.Structure details);
+               public static void play_message_parse_error (Gst.Message msg, out GLib.Error error, out 
Gst.Structure? details);
                [CCode (cheader_filename = "gst/play/play.h", cname = 
"gst_play_message_parse_media_info_updated")]
                [Version (since = "1.20")]
                public static void play_message_parse_media_info_updated (Gst.Message msg, out 
Gst.Play.MediaInfo info);
@@ -313,7 +313,7 @@ namespace Gst {
                public static void play_message_parse_volume_changed (Gst.Message msg, out double volume);
                [CCode (cheader_filename = "gst/play/play.h", cname = "gst_play_message_parse_warning")]
                [Version (since = "1.20")]
-               public static void play_message_parse_warning (Gst.Message msg, out unowned GLib.Error error, 
out Gst.Structure details);
+               public static void play_message_parse_warning (Gst.Message msg, out GLib.Error error, out 
Gst.Structure? details);
                [CCode (cheader_filename = "gst/play/play.h", cname = "gst_play_state_get_name")]
                [Version (since = "1.20")]
                public static unowned string play_state_get_name (Gst.Play.State state);