gstreamer_base/
base_transform.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::{mem, ptr};
4
5use glib::{prelude::*, translate::*};
6use gst::prelude::*;
7
8use crate::{ffi, BaseTransform};
9
10mod sealed {
11    pub trait Sealed {}
12    impl<T: super::IsA<super::BaseTransform>> Sealed for T {}
13}
14
15pub trait BaseTransformExtManual: sealed::Sealed + IsA<BaseTransform> + 'static {
16    #[doc(alias = "get_allocator")]
17    #[doc(alias = "gst_base_transform_get_allocator")]
18    fn allocator(&self) -> (Option<gst::Allocator>, gst::AllocationParams) {
19        unsafe {
20            let mut allocator = ptr::null_mut();
21            let mut params = mem::MaybeUninit::uninit();
22            ffi::gst_base_transform_get_allocator(
23                self.as_ref().to_glib_none().0,
24                &mut allocator,
25                params.as_mut_ptr(),
26            );
27            (from_glib_full(allocator), params.assume_init().into())
28        }
29    }
30
31    #[doc(alias = "get_segment")]
32    fn segment(&self) -> gst::Segment {
33        unsafe {
34            let trans: &ffi::GstBaseTransform = &*(self.as_ptr() as *const _);
35            let sinkpad = self.sink_pad();
36            let _guard = sinkpad.stream_lock();
37            from_glib_none(&trans.segment as *const _)
38        }
39    }
40
41    fn sink_pad(&self) -> &gst::Pad {
42        unsafe {
43            let elt = &*(self.as_ptr() as *const ffi::GstBaseTransform);
44            &*(&elt.sinkpad as *const *mut gst::ffi::GstPad as *const gst::Pad)
45        }
46    }
47
48    fn src_pad(&self) -> &gst::Pad {
49        unsafe {
50            let elt = &*(self.as_ptr() as *const ffi::GstBaseTransform);
51            &*(&elt.srcpad as *const *mut gst::ffi::GstPad as *const gst::Pad)
52        }
53    }
54}
55
56impl<O: IsA<BaseTransform>> BaseTransformExtManual for O {}
gstreamer_base/base_transform.rs

gstreamer_base/
base_transform.rs
