Struct Restriction 

struct Restriction {
    flag: usize,
    declared: Option<((u32, usize, usize), (u32, usize, usize))>,
}

Where a VUI’s bitstream restriction sits, and the reordering it declares.

Fields

flag: usize

The bit the bitstream_restriction_flag sits at, or the VUI’s own flag where the SPS carries no VUI.

declared: Option<((u32, usize, usize), (u32, usize, usize))>

max_num_reorder_frames and max_dec_frame_buffering with the bits each code spans, or None where the stream declares no restriction.