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::{Caps, DeviceMonitor, ffi};
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        unsafe {
25            skip_assert_initialized!();
26            debug_assert_ne!(val, 0);
27            DeviceMonitorFilterId(NonZeroU32::new_unchecked(val))
28        }
29    }
30}
31
32pub trait DeviceMonitorExtManual: IsA<DeviceMonitor> + 'static {
33    #[doc(alias = "gst_device_monitor_add_filter")]
34    fn add_filter(
35        &self,
36        classes: Option<&str>,
37        caps: Option<&Caps>,
38    ) -> Option<DeviceMonitorFilterId> {
39        let id = unsafe {
40            ffi::gst_device_monitor_add_filter(
41                self.as_ref().to_glib_none().0,
42                classes.to_glib_none().0,
43                caps.to_glib_none().0,
44            )
45        };
46
47        if id == 0 {
48            None
49        } else {
50            Some(unsafe { from_glib(id) })
51        }
52    }
53
54    #[doc(alias = "gst_device_monitor_remove_filter")]
55    fn remove_filter(
56        &self,
57        filter_id: DeviceMonitorFilterId,
58    ) -> Result<(), glib::error::BoolError> {
59        unsafe {
60            glib::result_from_gboolean!(
61                ffi::gst_device_monitor_remove_filter(
62                    self.as_ref().to_glib_none().0,
63                    filter_id.into_glib()
64                ),
65                "Failed to remove the filter"
66            )
67        }
68    }
69
70    #[doc(alias = "gst_device_monitor_get_devices")]
71    #[doc(alias = "get_devices")]
72    fn devices(&self) -> glib::List<crate::Device> {
73        unsafe {
74            FromGlibPtrContainer::from_glib_full(ffi::gst_device_monitor_get_devices(
75                self.as_ref().to_glib_none().0,
76            ))
77        }
78    }
79}
80
81impl<O: IsA<DeviceMonitor>> DeviceMonitorExtManual for O {}
gstreamer/device_monitor.rs

gstreamer/
device_monitor.rs
