linux_media/
media.rs

1use std::fs::OpenOptions;
2use std::os::fd::{AsFd, BorrowedFd, OwnedFd};
3use std::os::unix::fs::OpenOptionsExt;
4use std::path::{Path, PathBuf};
5
6use crate::error;
7use crate::MediaDeviceInfo;
8use crate::MediaTopology;
9use crate::Request;
10use crate::Version;
11
12#[derive(Debug)]
13pub struct Media {
14    info: MediaDeviceInfo,
15    path: PathBuf,
16    fd: OwnedFd,
17}
18
19impl Media {
20    pub fn from_path<P>(path: P) -> error::Result<Self>
21    where
22        P: AsRef<Path>,
23    {
24        let path = path.as_ref().to_path_buf();
25        let fd: OwnedFd = OpenOptions::new()
26            .read(true)
27            .write(true)
28            .custom_flags(libc::O_CLOEXEC)
29            .open(&path)
30            .map_err(|err| error::trap_io_error(err, path.clone()))?
31            .into();
32        let info = MediaDeviceInfo::from_fd(fd.as_fd())?;
33        Ok(Self { info, path, fd })
34    }
35
36    pub fn info(&self) -> &MediaDeviceInfo {
37        &self.info
38    }
39
40    pub fn media_version(&self) -> Version {
41        self.info.media_version()
42    }
43
44    pub fn path(&self) -> &Path {
45        &self.path
46    }
47
48    pub fn device_fd(&self) -> BorrowedFd<'_> {
49        self.fd.as_fd()
50    }
51
52    pub fn new_request(&self) -> error::Result<Request<'_>> {
53        Request::new(self.fd.as_fd())
54    }
55
56    pub fn new_topology(&self) -> error::Result<MediaTopology> {
57        MediaTopology::from_fd(self.info(), self.device_fd())
58    }
59}
linux_media/media.rs

linux_media/
media.rs
