v4l/video/output/
mod.rs

1pub mod parameters;
2pub use parameters::Parameters;
3
4use std::convert::TryFrom;
5use std::{io, mem};
6
7use crate::buffer::Type;
8use crate::device::Device;
9use crate::format::FourCC;
10use crate::format::{Description as FormatDescription, Format};
11use crate::frameinterval::FrameInterval;
12use crate::framesize::FrameSize;
13use crate::v4l2;
14use crate::v4l_sys::*;
15use crate::video::traits::Output;
16
17impl Output for Device {
18    impl_enum_frameintervals!();
19    impl_enum_framesizes!();
20    impl_enum_formats!(Type::VideoOutput);
21    impl_format!(Type::VideoOutput);
22    impl_set_format!(Type::VideoOutput);
23
24    fn params(&self) -> io::Result<Parameters> {
25        unsafe {
26            let mut v4l2_params = v4l2_streamparm {
27                type_: Type::VideoOutput as u32,
28                ..mem::zeroed()
29            };
30            v4l2::ioctl(
31                self.handle().fd(),
32                v4l2::vidioc::VIDIOC_G_PARM,
33                &mut v4l2_params as *mut _ as *mut std::os::raw::c_void,
34            )?;
35
36            Ok(Parameters::from(v4l2_params.parm.output))
37        }
38    }
39
40    fn set_params(&self, params: &Parameters) -> io::Result<Parameters> {
41        unsafe {
42            let mut v4l2_params = v4l2_streamparm {
43                type_: Type::VideoOutput as u32,
44                parm: v4l2_streamparm__bindgen_ty_1 {
45                    output: (*params).into(),
46                },
47            };
48            v4l2::ioctl(
49                self.handle().fd(),
50                v4l2::vidioc::VIDIOC_S_PARM,
51                &mut v4l2_params as *mut _ as *mut std::os::raw::c_void,
52            )?;
53        }
54
55        self.params()
56    }
57}
v4l/video/output/mod.rs

v4l/video/output/
mod.rs
