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caps: Add bindings for foreach(), map_in_place() and filter_map_in_place()`

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Sebastian Dröge 2022-01-08 23:34:19 +02:00 committed by Sebastian Dröge
parent 1b46bca2db
commit 843d3749b7
2 changed files with 106 additions and 1 deletions
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105
gstreamer/src/caps.rs
View file

@ -475,6 +475,111 @@ impl CapsRef {
pub fn serialize(&self, flags: crate::SerializeFlags) -> glib::GString {
unsafe { from_glib_full(ffi::gst_caps_serialize(&self.0, flags.into_glib())) }
}
#[doc(alias = "gst_caps_foreach")]
pub fn foreach<F: FnMut(&CapsFeaturesRef, &StructureRef) -> std::ops::ControlFlow<()>>(
&self,
mut func: F,
) -> bool {
unsafe {
unsafe extern "C" fn trampoline<
F: FnMut(&CapsFeaturesRef, &StructureRef) -> std::ops::ControlFlow<()>,
>(
features: *mut ffi::GstCapsFeatures,
s: *mut ffi::GstStructure,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let func = &mut *(user_data as *mut F);
let res = func(
CapsFeaturesRef::from_glib_borrow(features),
StructureRef::from_glib_borrow(s),
);
matches!(res, std::ops::ControlFlow::Continue(_)).into_glib()
}
let func = &mut func as *mut F;
from_glib(ffi::gst_caps_foreach(
self.as_ptr(),
Some(trampoline::<F>),
func as glib::ffi::gpointer,
))
}
}
#[doc(alias = "gst_caps_map_in_place")]
pub fn map_in_place<
F: FnMut(&mut CapsFeaturesRef, &mut StructureRef) -> std::ops::ControlFlow<()>,
>(
&mut self,
mut func: F,
) -> bool {
unsafe {
unsafe extern "C" fn trampoline<
F: FnMut(&mut CapsFeaturesRef, &mut StructureRef) -> std::ops::ControlFlow<()>,
>(
features: *mut ffi::GstCapsFeatures,
s: *mut ffi::GstStructure,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let func = &mut *(user_data as *mut F);
let res = func(
CapsFeaturesRef::from_glib_borrow_mut(features),
StructureRef::from_glib_borrow_mut(s),
);
matches!(res, std::ops::ControlFlow::Continue(_)).into_glib()
}
let func = &mut func as *mut F;
from_glib(ffi::gst_caps_map_in_place(
self.as_mut_ptr(),
Some(trampoline::<F>),
func as glib::ffi::gpointer,
))
}
}
#[doc(alias = "gst_caps_filter_and_map_in_place")]
pub fn filter_map_in_place<
F: FnMut(&mut CapsFeaturesRef, &mut StructureRef) -> CapsFilterMapAction,
>(
&mut self,
mut func: F,
) {
unsafe {
unsafe extern "C" fn trampoline<
F: FnMut(&mut CapsFeaturesRef, &mut StructureRef) -> CapsFilterMapAction,
>(
features: *mut ffi::GstCapsFeatures,
s: *mut ffi::GstStructure,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let func = &mut *(user_data as *mut F);
let res = func(
CapsFeaturesRef::from_glib_borrow_mut(features),
StructureRef::from_glib_borrow_mut(s),
);
match res {
CapsFilterMapAction::Keep => glib::ffi::GTRUE,
CapsFilterMapAction::Remove => glib::ffi::GFALSE,
}
}
let func = &mut func as *mut F;
ffi::gst_caps_filter_and_map_in_place(
self.as_mut_ptr(),
Some(trampoline::<F>),
func as glib::ffi::gpointer,
);
}
}
}
#[derive(Debug)]
pub enum CapsFilterMapAction {
Keep,
Remove,
}
macro_rules! define_iter(

2
gstreamer/src/lib.rs
View file

@ -65,7 +65,7 @@ pub use crate::structure::{Structure, StructureRef};
mod structure_serde;
pub mod caps;
pub use crate::caps::{Caps, CapsRef};
pub use crate::caps::{Caps, CapsFilterMapAction, CapsRef};
mod caps_features;
#[cfg(feature = "ser_de")]
mod caps_serde;