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gstreamer: Implement FromValue for mini object references

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This commit is contained in:
Sebastian Dröge 2022-01-24 14:28:13 +02:00
parent 93a777e6c9
commit 0d5132a7f0
1 changed files with 13 additions and 0 deletions
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13
gstreamer/src/miniobject.rs
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@ -477,6 +477,19 @@ macro_rules! mini_object_wrapper (
}
}
unsafe impl<'a> $crate::glib::value::FromValue<'a> for &'a $name {
type Checker = $crate::glib::value::GenericValueTypeOrNoneChecker<Self>;
unsafe fn from_value(value: &'a $crate::glib::Value) -> Self {
skip_assert_initialized!();
assert_eq!(std::mem::size_of::<$name>(), std::mem::size_of::<$crate::glib::ffi::gpointer>());
let value = &*(value as *const $crate::glib::Value as *const $crate::glib::gobject_ffi::GValue);
let ptr = &value.data[0].v_pointer as *const $crate::glib::ffi::gpointer as *const *const $ffi_name;
assert!(!(*ptr).is_null());
&*(ptr as *const $name)
}
}
impl $crate::glib::value::ToValue for $name {
fn to_value(&self) -> $crate::glib::Value {
let mut value = $crate::glib::Value::for_value_type::<Self>();