video-info: Use gst_video_info_set_interlaced_format() when building for 1.16 and having an interlace-mode set

This ensures that the plane information is filled correctly.

gstreamer-video/src/video_info.rs

@@ -271,6 +271,8 @@ impl<'a> VideoInfoBuilder<'a> {
         unsafe {
             let mut info = mem::uninitialized();
 
+            #[cfg(not(feature = "v1_16"))]
+            {
                 gst_video_sys::gst_video_info_set_format(
                     &mut info,
                     self.format.to_glib(),
@@ -278,13 +280,33 @@ impl<'a> VideoInfoBuilder<'a> {
                     self.height,
                 );
 
-            if info.finfo.is_null() || info.width <= 0 || info.height <= 0 {
-                return None;
-            }
-
                 if let Some(interlace_mode) = self.interlace_mode {
                     info.interlace_mode = interlace_mode.to_glib();
                 }
+            }
+            #[cfg(feature = "v1_16")]
+            {
+                if let Some(interlace_mode) = self.interlace_mode {
+                    gst_video_sys::gst_video_info_set_interlaced_format(
+                        &mut info,
+                        self.format.to_glib(),
+                        interlace_mode.to_glib(),
+                        self.width,
+                        self.height,
+                    );
+                } else {
+                    gst_video_sys::gst_video_info_set_format(
+                        &mut info,
+                        self.format.to_glib(),
+                        self.width,
+                        self.height,
+                    );
+                }
+            }
+
+            if info.finfo.is_null() || info.width <= 0 || info.height <= 0 {
+                return None;
+            }
 
             if let Some(flags) = self.flags {
                 info.flags = flags.to_glib();