stream: gst: util: Improve is_gst_plugin_available

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

src/stream/gst/utils.rs

@@ -8,20 +8,24 @@ pub struct PluginRankConfig {
 }
 
 #[allow(dead_code)] // TODO: Use this to check all used plugins are available
-pub fn is_gst_plugin_available(plugin_name: &str, min_version: &str) -> bool {
+pub fn is_gst_plugin_available(plugin_name: &str, min_version: Option<&str>) -> bool {
     // reference: https://github.com/GStreamer/gst/blob/b4ca58df7624b005a33e182a511904d7cceea890/tools/gst-inspect.c#L2148
 
     if let Err(error) = gst::init() {
         tracing::error!("Error! {error}");
     }
 
-    let version = semver::Version::parse(min_version).unwrap();
-    gst::Registry::get().check_feature_version(
-        plugin_name,
-        version.major.try_into().unwrap(),
-        version.minor.try_into().unwrap(),
-        version.patch.try_into().unwrap(),
-    )
+    if let Some(min_version) = min_version {
+        let version = semver::Version::parse(min_version).unwrap();
+        gst::Registry::get().check_feature_version(
+            plugin_name,
+            version.major.try_into().unwrap(),
+            version.minor.try_into().unwrap(),
+            version.patch.try_into().unwrap(),
+        )
+    } else {
+        gst::Registry::get().lookup_feature(plugin_name).is_some()
+    }
 }
 
 pub fn set_plugin_rank(plugin_name: &str, rank: gst::Rank) -> Result<()> {