gstreamer_gl/
gl_framebuffer.rs

1use glib::{prelude::*, translate::*};
2
3use crate::{ffi, GLFramebuffer, GLMemoryRef};
4
5mod sealed {
6    pub trait Sealed {}
7    impl<T: super::IsA<super::GLFramebuffer>> Sealed for T {}
8}
9
10pub trait GLFramebufferExtManual: sealed::Sealed + IsA<GLFramebuffer> + 'static {
11    #[doc(alias = "gst_gl_framebuffer_draw_to_texture")]
12    fn draw_to_texture<F: FnOnce()>(&self, mem: &mut GLMemoryRef, func: F) {
13        let mut func = std::mem::ManuallyDrop::new(func);
14        let user_data: *mut F = &mut *func;
15
16        unsafe extern "C" fn trampoline<F: FnOnce()>(
17            data: glib::ffi::gpointer,
18        ) -> glib::ffi::gboolean {
19            let func = std::ptr::read(data as *mut F);
20            func();
21            glib::ffi::GTRUE
22        }
23
24        unsafe {
25            ffi::gst_gl_framebuffer_draw_to_texture(
26                self.as_ref().to_glib_none().0,
27                mem.as_mut_ptr(),
28                Some(trampoline::<F>),
29                user_data as glib::ffi::gpointer,
30            );
31        }
32    }
33}
34
35impl<O: IsA<GLFramebuffer>> GLFramebufferExtManual for O {}
gstreamer_gl/gl_framebuffer.rs

gstreamer_gl/
gl_framebuffer.rs
