2021-12-22 01:26:20 +00:00
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// Take a look at the license at the top of the repository in the LICENSE file.
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use glib::prelude::*;
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use glib::translate::*;
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use glib::subclass::prelude::*;
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use gst::ffi::GstStructure;
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use crate::Navigation;
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pub trait NavigationImpl: ObjectImpl {
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fn send_event(&self, nav: &Self::Type, structure: gst::Structure);
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}
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pub trait NavigationImplExt: ObjectSubclass {
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fn parent_send_event(&self, nav: &Self::Type, structure: gst::Structure);
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}
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impl<T: NavigationImpl> NavigationImplExt for T {
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fn parent_send_event(&self, nav: &Self::Type, structure: gst::Structure) {
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unsafe {
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let type_data = Self::type_data();
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let parent_iface = type_data.as_ref().parent_interface::<Navigation>()
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as *const ffi::GstNavigationInterface;
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let func = match (*parent_iface).send_event {
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Some(func) => func,
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None => return,
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};
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func(
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nav.unsafe_cast_ref::<Navigation>().to_glib_none().0,
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structure.into_ptr(),
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);
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}
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}
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}
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unsafe impl<T: NavigationImpl> IsImplementable<T> for Navigation {
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fn interface_init(iface: &mut glib::Interface<Self>) {
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let iface = iface.as_mut();
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iface.send_event = Some(navigation_send_event::<T>);
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}
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}
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unsafe extern "C" fn navigation_send_event<T: NavigationImpl>(
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nav: *mut ffi::GstNavigation,
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structure: *mut GstStructure,
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) {
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let instance = &*(nav as *mut T::Instance);
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2021-12-28 15:50:06 +00:00
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let imp = instance.imp();
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2021-12-22 01:26:20 +00:00
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imp.send_event(
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from_glib_borrow::<_, Navigation>(nav).unsafe_cast_ref(),
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from_glib_full(structure),
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);
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}
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