[Spice-devel] why need "image->u.quic.data->chunk[0].len >> 2" when quic_decode_begin

[Qiang]

Hi, Dear All spice-dev

Anybody can tell me why need right 2 bit of chunk[0].len
("image->u.quic.data->chunk[0].len >> 2") when quic_decode_begin?
Is there any other example to show how to decode quic data?

Thanks & Best wishes