nut->curr_frame_size = est_size;
nut->curr_frame_size = max_size;
static int put_packetheader(NUTContext *nut, ByteIOContext *bc, int est_size){    put_flush_packet(bc);    nut->curr_frame_start = url_ftell(bc);    nut->curr_frame_size = est_size;        /* packet header */    put_v(bc, nut->curr_frame_size); /* forward ptr */    put_v(bc, nut->last_frame_size); /* backward ptr */    dprintf("Packet: fwd: %d, bwd: %d\n",	nut->curr_frame_size, nut->last_frame_size);    nut->last_frame_size = nut->curr_frame_size;        return 0;}