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translationbin: expose read-only translator property on source pads

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This lets users easily change the tokenization method on the translator
object for instance.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/2124>
This commit is contained in:
Mathieu Duponchelle 2025-03-07 18:15:44 +01:00 committed by Sebastian Dröge
parent ebcb8f220b
commit 780c724902
2 changed files with 28 additions and 5 deletions
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11
docs/plugins/gst_plugins_cache.json
View file

@ -9673,6 +9673,17 @@
"readable": true,
"type": "gchararray",
"writable": true
},
"translator": {
"blurb": "The translator element in use",
"conditionally-available": false,
"construct": false,
"construct-only": false,
"controllable": false,
"mutable": "null",
"readable": true,
"type": "GstElement",
"writable": false
}
}
},

22
video/closedcaption/src/translationbin/imp.rs
View file

@ -102,6 +102,10 @@ impl TranslationBin {
pad_state.queue = Some(queue);
pad_state.translator = Some(translator);
drop(pad_state);
srcpad.notify("translator");
Ok(())
}
@ -568,11 +572,18 @@ impl ObjectSubclass for TranslationSrcPad {
impl ObjectImpl for TranslationSrcPad {
fn properties() -> &'static [glib::ParamSpec] {
static PROPERTIES: LazyLock<Vec<glib::ParamSpec>> = LazyLock::new(|| {
vec![glib::ParamSpecString::builder("language-code")
.nick("Language Code")
.blurb("The language of the output stream")
.default_value(Some(DEFAULT_OUTPUT_LANG_CODE))
.build()]
vec![
glib::ParamSpecString::builder("language-code")
.nick("Language Code")
.blurb("The language of the output stream")
.default_value(Some(DEFAULT_OUTPUT_LANG_CODE))
.build(),
glib::ParamSpecObject::builder::<gst::Element>("translator")
.nick("Translator")
.blurb("The translator element in use")
.read_only()
.build(),
]
});
PROPERTIES.as_ref()
@ -599,6 +610,7 @@ impl ObjectImpl for TranslationSrcPad {
let settings = self.settings.lock().unwrap();
settings.language_code.to_value()
}
"translator" => self.state.lock().unwrap().translator.to_value(),
_ => unimplemented!(),
}
}