From 47cc80b1ef4f82cd49c7875875d818e955bd34f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Wed, 22 Apr 2020 21:42:39 +0300
Subject: [PATCH] video: Assert if caption data passed when adding caption
 metas is empty

It will cause a critical warning otherwise.
---
 gstreamer-video/src/video_meta.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gstreamer-video/src/video_meta.rs b/gstreamer-video/src/video_meta.rs
index 1f4ca8981..d6074111a 100644
--- a/gstreamer-video/src/video_meta.rs
+++ b/gstreamer-video/src/video_meta.rs
@@ -210,6 +210,7 @@ impl VideoCaptionMeta {
         data: &[u8],
     ) -> gst::MetaRefMut<'a, Self, gst::meta::Standalone> {
         skip_assert_initialized!();
+        assert!(!data.is_empty());
         unsafe {
             let meta = gst_video_sys::gst_buffer_add_video_caption_meta(
                 buffer.as_mut_ptr(),