gstreamer/
device_monitor.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::num::NonZeroU32;
4
5use glib::{prelude::*, translate::*};
6
7use crate::{ffi, Caps, DeviceMonitor};
8
9#[derive(Debug, PartialEq, Eq)]
10pub struct DeviceMonitorFilterId(NonZeroU32);
11
12impl IntoGlib for DeviceMonitorFilterId {
13    type GlibType = libc::c_uint;
14
15    #[inline]
16    fn into_glib(self) -> libc::c_uint {
17        self.0.get()
18    }
19}
20
21impl FromGlib<libc::c_uint> for DeviceMonitorFilterId {
22    #[inline]
23    unsafe fn from_glib(val: libc::c_uint) -> DeviceMonitorFilterId {
24        skip_assert_initialized!();
25        debug_assert_ne!(val, 0);
26        DeviceMonitorFilterId(NonZeroU32::new_unchecked(val))
27    }
28}
29mod sealed {
30    pub trait Sealed {}
31    impl<T: super::IsA<super::DeviceMonitor>> Sealed for T {}
32}
33
34pub trait DeviceMonitorExtManual: sealed::Sealed + IsA<DeviceMonitor> + 'static {
35    #[doc(alias = "gst_device_monitor_add_filter")]
36    fn add_filter(
37        &self,
38        classes: Option<&str>,
39        caps: Option<&Caps>,
40    ) -> Option<DeviceMonitorFilterId> {
41        let id = unsafe {
42            ffi::gst_device_monitor_add_filter(
43                self.as_ref().to_glib_none().0,
44                classes.to_glib_none().0,
45                caps.to_glib_none().0,
46            )
47        };
48
49        if id == 0 {
50            None
51        } else {
52            Some(unsafe { from_glib(id) })
53        }
54    }
55
56    #[doc(alias = "gst_device_monitor_remove_filter")]
57    fn remove_filter(
58        &self,
59        filter_id: DeviceMonitorFilterId,
60    ) -> Result<(), glib::error::BoolError> {
61        unsafe {
62            glib::result_from_gboolean!(
63                ffi::gst_device_monitor_remove_filter(
64                    self.as_ref().to_glib_none().0,
65                    filter_id.into_glib()
66                ),
67                "Failed to remove the filter"
68            )
69        }
70    }
71
72    #[doc(alias = "gst_device_monitor_get_devices")]
73    #[doc(alias = "get_devices")]
74    fn devices(&self) -> glib::List<crate::Device> {
75        unsafe {
76            FromGlibPtrContainer::from_glib_full(ffi::gst_device_monitor_get_devices(
77                self.as_ref().to_glib_none().0,
78            ))
79        }
80    }
81}
82
83impl<O: IsA<DeviceMonitor>> DeviceMonitorExtManual for O {}
gstreamer/device_monitor.rs

gstreamer/
device_monitor.rs
