mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-09-28 14:52:17 +00:00
73ab9054c4
They don't add any safety as this is via unsafe code anyway and are not needed to get mutable references in this context anyway, while adding a bit of runtime overhead.
65 lines
2.1 KiB
Rust
65 lines
2.1 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use crate::RTSPSessionPool;
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use glib::ffi::{gboolean, gpointer};
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use glib::prelude::*;
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use glib::source::{Continue, Priority};
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use glib::translate::*;
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use std::mem::transmute;
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unsafe extern "C" fn trampoline_watch<F: FnMut(&RTSPSessionPool) -> Continue + Send + 'static>(
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pool: *mut ffi::GstRTSPSessionPool,
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func: gpointer,
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) -> gboolean {
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let func: &mut F = &mut *(func as *mut F);
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func(&from_glib_borrow(pool)).into_glib()
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}
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unsafe extern "C" fn destroy_closure_watch<
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F: FnMut(&RTSPSessionPool) -> Continue + Send + 'static,
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>(
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ptr: gpointer,
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) {
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Box::<F>::from_raw(ptr as *mut _);
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}
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fn into_raw_watch<F: FnMut(&RTSPSessionPool) -> Continue + Send + 'static>(func: F) -> gpointer {
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#[allow(clippy::type_complexity)]
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let func: Box<F> = Box::new(func);
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Box::into_raw(func) as gpointer
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}
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pub trait RTSPSessionPoolExtManual: 'static {
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#[doc(alias = "gst_rtsp_session_pool_create_watch")]
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fn create_watch<F>(&self, name: Option<&str>, priority: Priority, func: F) -> glib::Source
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where
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F: FnMut(&RTSPSessionPool) -> Continue + Send + 'static;
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}
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impl<O: IsA<RTSPSessionPool>> RTSPSessionPoolExtManual for O {
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fn create_watch<F>(&self, name: Option<&str>, priority: Priority, func: F) -> glib::Source
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where
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F: FnMut(&RTSPSessionPool) -> Continue + Send + 'static,
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{
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skip_assert_initialized!();
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unsafe {
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let source = ffi::gst_rtsp_session_pool_create_watch(self.as_ref().to_glib_none().0);
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glib::ffi::g_source_set_callback(
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source,
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Some(transmute::<
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_,
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unsafe extern "C" fn(glib::ffi::gpointer) -> i32,
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>(trampoline_watch::<F> as *const ())),
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into_raw_watch(func),
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Some(destroy_closure_watch::<F>),
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);
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glib::ffi::g_source_set_priority(source, priority.into_glib());
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if let Some(name) = name {
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glib::ffi::g_source_set_name(source, name.to_glib_none().0);
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}
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from_glib_full(source)
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}
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}
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}
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