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
48pub trait GLContextExtManual: IsA<GLContext> + 'static {
49    #[doc(alias = "get_gl_context")]
50    #[doc(alias = "gst_gl_context_get_gl_context")]
51    fn gl_context(&self) -> uintptr_t {
52        unsafe { ffi::gst_gl_context_get_gl_context(self.as_ref().to_glib_none().0) as uintptr_t }
53    }
54
55    #[doc(alias = "get_proc_address")]
56    #[doc(alias = "gst_gl_context_get_proc_address")]
57    fn proc_address(&self, name: &str) -> uintptr_t {
58        unsafe {
59            ffi::gst_gl_context_get_proc_address(
60                self.as_ref().to_glib_none().0,
61                name.to_glib_none().0,
62            ) as uintptr_t
63        }
64    }
65
66    #[doc(alias = "gst_gl_context_thread_add")]
67    fn thread_add<F: FnOnce(&Self) + Send>(&self, func: F) {
68        let mut func = std::mem::ManuallyDrop::new(func);
69        let user_data: *mut F = &mut *func;
70
71        unsafe extern "C" fn trampoline<O: IsA<GLContext>, F: FnOnce(&O) + Send>(
72            context: *mut ffi::GstGLContext,
73            data: glib::ffi::gpointer,
74        ) {
75            let func = std::ptr::read(data as *mut F);
76            let context = GLContext::from_glib_borrow(context);
77            func(context.unsafe_cast_ref())
78        }
79
80        unsafe {
81            ffi::gst_gl_context_thread_add(
82                self.as_ref().to_glib_none().0,
83                Some(trampoline::<Self, F>),
84                user_data as glib::ffi::gpointer,
85            );
86        }
87    }
88}
89
90impl<O: IsA<GLContext>> GLContextExtManual for O {}
gstreamer_gl/gl_context.rs

gstreamer_gl/
gl_context.rs
