Method get_exposure

rustcv-backend-v4l2/src/controls.rs:62–75

(&self)

    }

    fn get_exposure(&self) -> Result<u32> {
        let val = self
            .dev
            .control(CID_EXPOSURE_ABSOLUTE)
            .map_err(CameraError::Io)?;

        match val.value {
            Value::Integer(v) => Ok(v as u32),
            _ => Err(CameraError::Io(std::io::Error::new(
                std::io::ErrorKind::InvalidData,
                "Invalid exposure value type",
            ))),
        }
    }
}

// --- 2. 镜头控制 (Lens) ---