gstreamer/
device_provider.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::ffi::CStr;
4
5use glib::{prelude::*, translate::*};
6
7use crate::{ffi, DeviceProvider, Plugin, Rank};
8
9impl DeviceProvider {
10    #[doc(alias = "gst_device_provider_register")]
11    pub fn register(
12        plugin: Option<&Plugin>,
13        name: &str,
14        rank: Rank,
15        type_: glib::types::Type,
16    ) -> Result<(), glib::error::BoolError> {
17        skip_assert_initialized!();
18        unsafe {
19            glib::result_from_gboolean!(
20                ffi::gst_device_provider_register(
21                    plugin.to_glib_none().0,
22                    name.to_glib_none().0,
23                    rank.into_glib() as u32,
24                    type_.into_glib()
25                ),
26                "Failed to register device provider factory"
27            )
28        }
29    }
30}
31
32mod sealed {
33    pub trait Sealed {}
34    impl<T: super::IsA<super::DeviceProvider>> Sealed for T {}
35}
36
37pub trait DeviceProviderExtManual: sealed::Sealed + IsA<DeviceProvider> + 'static {
38    #[doc(alias = "get_metadata")]
39    #[doc(alias = "gst_device_provider_class_get_metadata")]
40    fn metadata<'a>(&self, key: &str) -> Option<&'a str> {
41        unsafe {
42            self.unsafe_cast_ref::<DeviceProvider>()
43                .class()
44                .metadata(key)
45        }
46    }
47
48    #[doc(alias = "gst_device_provider_get_devices")]
49    #[doc(alias = "get_devices")]
50    fn devices(&self) -> glib::List<crate::Device> {
51        unsafe {
52            FromGlibPtrContainer::from_glib_full(ffi::gst_device_provider_get_devices(
53                self.as_ref().to_glib_none().0,
54            ))
55        }
56    }
57}
58
59impl<O: IsA<DeviceProvider>> DeviceProviderExtManual for O {}
60
61pub unsafe trait DeviceProviderClassExt {
62    #[doc(alias = "get_metadata")]
63    #[doc(alias = "gst_device_provider_class_get_metadata")]
64    fn metadata<'a>(&self, key: &str) -> Option<&'a str> {
65        unsafe {
66            let klass = self as *const _ as *const ffi::GstDeviceProviderClass;
67
68            let ptr = ffi::gst_device_provider_class_get_metadata(
69                mut_override(klass),
70                key.to_glib_none().0,
71            );
72
73            if ptr.is_null() {
74                None
75            } else {
76                Some(CStr::from_ptr(ptr).to_str().unwrap())
77            }
78        }
79    }
80}
81
82unsafe impl<T: IsA<DeviceProvider> + glib::object::IsClass> DeviceProviderClassExt
83    for glib::object::Class<T>
84{
85}
gstreamer/device_provider.rs

gstreamer/
device_provider.rs
