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onvif: Use CustomMeta::is_registered function

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Use CustomMeta::is_registered() to avoid registering twice
OnvifXMLFrameMeta type.
It will be useful later when adding relation meta elements.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1464>
This commit is contained in:
Benjamin Gaignard 2024-02-12 14:50:05 +01:00 committed by GStreamer Marge Bot
parent 4abc5c7a48
commit eddf443a8b
1 changed files with 3 additions and 1 deletions
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4
net/onvif/src/lib.rs
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@ -120,7 +120,9 @@ fn plugin_init(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
onvifmetadataoverlay::register(plugin)?;
onvifmetadataparse::register(plugin)?;
gst::meta::CustomMeta::register("OnvifXMLFrameMeta", &[]);
if !gst::meta::CustomMeta::is_registered("OnvifXMLFrameMeta") {
gst::meta::CustomMeta::register("OnvifXMLFrameMeta", &[]);
}
Ok(())
}