Function munmap_buffer

rustcv-camera/src/backend/linux/sys.rs:425–429

Unmap a previously mapped buffer. 解除先前映射的缓冲区。

(ptr: *mut u8, length: usize)

/// Unmap a previously mapped buffer.
/// 解除先前映射的缓冲区。
pub fn munmap_buffer(ptr: *mut u8, length: usize) {
    unsafe {
        libc::munmap(ptr as *mut libc::c_void, length);
    }
}

// ─── V4L2 constants not in v4l2-sys-mit ─────────────────────────────────────