Method new

rustcv-camera/src/backend/linux/mod.rs:100–110

Create a new (uninitialized) V4L2 backend. 创建新的（未初始化的）V4L2 后端。

()

    /// Create a new (uninitialized) V4L2 backend.
    /// 创建新的（未初始化的）V4L2 后端。
    pub fn new() -> Self {
        Self {
            fd: -1,
            buffers: Vec::new(),
            pending_queue: None,
            width: 0,
            height: 0,
            pixel_format: PixelFormat::Mjpeg,
            streaming: false,
        }
    }

    /// Open a device, negotiate format, allocate mmap buffers.
    /// 打开设备、协商格式、分配 mmap 缓冲区。