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gst: Element::foreach*_pad: return ControlFlow instead of bool in callback

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Same as for BufferList::foreach*.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1584>
This commit is contained in:
François Laignel 2024-11-06 20:33:57 +01:00
parent ce77a67382
commit 5df7df303c
1 changed files with 93 additions and 2 deletions
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95
gstreamer/src/element.rs
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@ -1,6 +1,6 @@
// Take a look at the license at the top of the repository in the LICENSE file.
use std::{ffi::CStr, future::Future, mem, num::NonZeroU64, pin::Pin};
use std::{ffi::CStr, future::Future, mem, num::NonZeroU64, ops::ControlFlow, pin::Pin};
use glib::translate::*;
use itertools::Itertools;
@ -333,6 +333,81 @@ pub trait ElementExtManual: IsA<Element> + 'static {
}
}
#[doc(alias = "gst_element_foreach_pad")]
fn foreach_pad<F: FnMut(&Element, &Pad) -> ControlFlow<()>>(&self, func: F) {
unsafe extern "C" fn trampoline<F: FnMut(&Element, &Pad) -> ControlFlow<()>>(
element: *mut ffi::GstElement,
pad: *mut ffi::GstPad,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let element = from_glib_borrow(element);
let pad = from_glib_borrow(pad);
let callback = user_data as *mut F;
(*callback)(&element, &pad).is_continue().into_glib()
}
unsafe {
let mut func = func;
let func_ptr: &mut F = &mut func;
let _ = ffi::gst_element_foreach_pad(
self.as_ptr() as *mut _,
Some(trampoline::<F>),
func_ptr as *mut _ as *mut _,
);
}
}
#[doc(alias = "gst_element_foreach_sink_pad")]
fn foreach_sink_pad<F: FnMut(&Element, &Pad) -> ControlFlow<()>>(&self, func: F) {
unsafe extern "C" fn trampoline<P: FnMut(&Element, &Pad) -> ControlFlow<()>>(
element: *mut ffi::GstElement,
pad: *mut ffi::GstPad,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let element = from_glib_borrow(element);
let pad = from_glib_borrow(pad);
let callback = user_data as *mut P;
(*callback)(&element, &pad).is_continue().into_glib()
}
unsafe {
let mut func = func;
let func_ptr: &mut F = &mut func;
let _ = ffi::gst_element_foreach_sink_pad(
self.as_ptr() as *mut _,
Some(trampoline::<F>),
func_ptr as *mut _ as *mut _,
);
}
}
#[doc(alias = "gst_element_foreach_src_pad")]
fn foreach_src_pad<F: FnMut(&Element, &Pad) -> ControlFlow<()>>(&self, func: F) {
unsafe extern "C" fn trampoline<P: FnMut(&Element, &Pad) -> ControlFlow<()>>(
element: *mut ffi::GstElement,
pad: *mut ffi::GstPad,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let element = from_glib_borrow(element);
let pad = from_glib_borrow(pad);
let callback = user_data as *mut P;
(*callback)(&element, &pad).is_continue().into_glib()
}
unsafe {
let mut func = func;
let func_ptr: &mut F = &mut func;
let _ = ffi::gst_element_foreach_src_pad(
self.as_ptr() as *mut _,
Some(trampoline::<F>),
func_ptr as *mut _ as *mut _,
);
}
}
fn num_pads(&self) -> u16 {
unsafe {
let elt: &ffi::GstElement = &*(self.as_ptr() as *const _);
@ -1242,10 +1317,26 @@ mod tests {
identity.foreach_pad(|_element, pad| {
pad_names.push(pad.name());
true
ControlFlow::Continue(())
});
pad_names.sort();
assert_eq!(pad_names, vec![String::from("sink"), String::from("src")]);
pad_names.clear();
identity.foreach_sink_pad(|_element, pad| {
pad_names.push(pad.name());
ControlFlow::Continue(())
});
assert_eq!(pad_names, vec![String::from("sink")]);
pad_names.clear();
identity.foreach_src_pad(|_element, pad| {
pad_names.push(pad.name());
ControlFlow::Continue(())
});
assert_eq!(pad_names, vec![String::from("src")]);
}
#[test]