gstreamer_gl/
gl_context.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use glib::{prelude::*, translate::*};
4use libc::uintptr_t;
5
6use crate::{ffi, GLContext, GLDisplay, GLPlatform, GLAPI};
7
8impl GLContext {
9    pub unsafe fn new_wrapped<T: IsA<GLDisplay>>(
10        display: &T,
11        handle: uintptr_t,
12        context_type: GLPlatform,
13        available_apis: GLAPI,
14    ) -> Option<Self> {
15        from_glib_full(ffi::gst_gl_context_new_wrapped(
16            display.as_ref().to_glib_none().0,
17            handle,
18            context_type.into_glib(),
19            available_apis.into_glib(),
20        ))
21    }
22
23    #[doc(alias = "get_current_gl_context")]
24    #[doc(alias = "gst_gl_context_get_current_gl_context")]
25    pub fn current_gl_context(context_type: GLPlatform) -> uintptr_t {
26        skip_assert_initialized!();
27        unsafe { ffi::gst_gl_context_get_current_gl_context(context_type.into_glib()) as uintptr_t }
28    }
29
30    #[doc(alias = "get_proc_address_with_platform")]
31    #[doc(alias = "gst_gl_context_get_proc_address_with_platform")]
32    pub fn proc_address_with_platform(
33        context_type: GLPlatform,
34        gl_api: GLAPI,
35        name: &str,
36    ) -> uintptr_t {
37        skip_assert_initialized!();
38        unsafe {
39            ffi::gst_gl_context_get_proc_address_with_platform(
40                context_type.into_glib(),
41                gl_api.into_glib(),
42                name.to_glib_none().0,
43            ) as uintptr_t
44        }
45    }
46}
47
48mod sealed {
49    pub trait Sealed {}
50    impl<T: super::IsA<super::GLContext>> Sealed for T {}
51}
52
53pub trait GLContextExtManual: sealed::Sealed + IsA<GLContext> + 'static {
54    #[doc(alias = "get_gl_context")]
55    #[doc(alias = "gst_gl_context_get_gl_context")]
56    fn gl_context(&self) -> uintptr_t {
57        unsafe { ffi::gst_gl_context_get_gl_context(self.as_ref().to_glib_none().0) as uintptr_t }
58    }
59
60    #[doc(alias = "get_proc_address")]
61    #[doc(alias = "gst_gl_context_get_proc_address")]
62    fn proc_address(&self, name: &str) -> uintptr_t {
63        unsafe {
64            ffi::gst_gl_context_get_proc_address(
65                self.as_ref().to_glib_none().0,
66                name.to_glib_none().0,
67            ) as uintptr_t
68        }
69    }
70
71    #[doc(alias = "gst_gl_context_thread_add")]
72    fn thread_add<F: FnOnce(&Self) + Send>(&self, func: F) {
73        let mut func = std::mem::ManuallyDrop::new(func);
74        let user_data: *mut F = &mut *func;
75
76        unsafe extern "C" fn trampoline<O: IsA<GLContext>, F: FnOnce(&O) + Send>(
77            context: *mut ffi::GstGLContext,
78            data: glib::ffi::gpointer,
79        ) {
80            let func = std::ptr::read(data as *mut F);
81            let context = GLContext::from_glib_borrow(context);
82            func(context.unsafe_cast_ref())
83        }
84
85        unsafe {
86            ffi::gst_gl_context_thread_add(
87                self.as_ref().to_glib_none().0,
88                Some(trampoline::<Self, F>),
89                user_data as glib::ffi::gpointer,
90            );
91        }
92    }
93}
94
95impl<O: IsA<GLContext>> GLContextExtManual for O {}
gstreamer_gl/gl_context.rs

gstreamer_gl/
gl_context.rs
