write_u32(buf + 14, g->bytes);
write_u8(buf + 18, fc->current_slice_num);
write_u32(buf + 14, g->bytes);
write_u8(buf + 18, fc->current_slice_num);
write_u16(buf + 20, g->slice_bytes);
write_u8(buf + 22, g->first_chunk? 0 : 1);
write_u8(buf + 23, vsst->header_len? 1 : 0);
write_u16(buf + 20, g->slice_bytes);
write_u8(buf + 22, g->first_chunk? 0 : 1);
write_u8(buf + 23, vsst->header_len? 1 : 0);