Function stream_off

rustcv-camera/src/backend/linux/sys.rs:352–362

Stop video streaming (VIDIOC_STREAMOFF). 停止视频流（VIDIOC_STREAMOFF）。 All buffers are automatically dequeued by the driver after this call. 此调用后驱动会自动将所有缓冲区出队。

(fd: RawFd)

/// All buffers are automatically dequeued by the driver after this call.
/// 此调用后驱动会自动将所有缓冲区出队。
pub fn stream_off(fd: RawFd) -> io::Result<()> {
    let mut buf_type: u32 = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    unsafe {
        v4l2_ioctl(
            fd,
            VIDIOC_STREAMOFF,
            &mut buf_type as *mut _ as *mut libc::c_void,
        )?;
    }
    Ok(())
}

// ─── Device open/close ──────────────────────────────────────────────────────