media_device/
camera.rs

1use cfg_if::cfg_if;
2use media_core::{
3    video::{ColorRange, VideoFormat},
4    Result,
5};
6
7use crate::{DeviceEvent, DeviceManager};
8
9cfg_if! {
10    if #[cfg(target_os = "windows")] {
11        pub use crate::backend::media_foundation::MediaFoundationDeviceManager as DefaultCameraManager;
12    } else if #[cfg(any(target_os = "macos", target_os = "ios"))] {
13        pub use crate::backend::av_foundation::AVFoundationCaptureDeviceManager as DefaultCameraManager;
14    } else {
15        compile_error!("unsupported target");
16    }
17}
18
19#[derive(Clone, Debug)]
20pub(crate) struct CameraFormat {
21    pub format: VideoFormat,
22    pub color_range: ColorRange,
23    pub width: u32,
24    pub height: u32,
25    pub frame_rates: Vec<f32>,
26}
27
28pub struct CameraManager<T: DeviceManager> {
29    backend: T,
30}
31
32impl<T: DeviceManager> CameraManager<T> {
33    pub fn new() -> Result<Self> {
34        let mut backend = T::init()?;
35        backend.refresh()?;
36        Ok(Self {
37            backend,
38        })
39    }
40
41    pub fn list(&self) -> Vec<&T::DeviceType> {
42        self.backend.list()
43    }
44
45    pub fn index(&self, index: usize) -> Option<&T::DeviceType> {
46        self.backend.index(index)
47    }
48
49    pub fn index_mut(&mut self, index: usize) -> Option<&mut T::DeviceType> {
50        self.backend.index_mut(index)
51    }
52
53    pub fn lookup(&self, id: &str) -> Option<&T::DeviceType> {
54        self.backend.lookup(id)
55    }
56
57    pub fn lookup_mut(&mut self, id: &str) -> Option<&mut T::DeviceType> {
58        self.backend.lookup_mut(id)
59    }
60
61    pub fn refresh(&mut self) -> Result<()> {
62        self.backend.refresh()
63    }
64
65    pub fn set_change_handler<F>(&mut self, handler: F) -> Result<()>
66    where
67        F: Fn(&DeviceEvent) + Send + Sync + 'static,
68    {
69        self.backend.set_change_handler(handler)
70    }
71}
72
73impl<T: DeviceManager> Drop for CameraManager<T> {
74    fn drop(&mut self) {
75        self.backend.deinit();
76    }
77}
78
79impl CameraManager<DefaultCameraManager> {
80    pub fn new_default() -> Result<Self> {
81        Self::new()
82    }
83}
media_device/camera.rs

media_device/
camera.rs
