Crate dvb_bbframe 

ETSI DVB-S2 / S2X / T2 BBFrame parser + builder.

Supports both Normal Mode (NM) and High Efficiency Mode (HEM) per EN 302 755 v1.4.1 §5.1.7.

Entry points:

• header::Bbheader — the 10-byte BBHEADER with parse + serialize.
• packet::up_iter — user packet extraction from the data field.
• pump::BbframePump — per-PLP BBFrame→inner-TS pump (orchestrates header parse + carry-over extraction).
• crc::crc8 — CRC-8 encoder (EN 302 307-1 §5.1.4 / EN 302 755 Annex F).
• issy — ISSY field parser (EN 302 755 Annex C).

Quick start

use dvb_bbframe::header::{Bbheader, Matype, Mode, TsGs, BBHEADER_LEN};

let hdr = Bbheader {
    matype: Matype { ts_gs: TsGs::Ts, sis: true, ccm: true, issyi: false, npd: false, ext: 0, isi: 0 },
    upl: 1504, sync: 0x47, dfl: 1504, syncd: 0, mode: Mode::Normal, issy_in_header: None,
};
let bytes = hdr.serialize();              // 10-byte BBHEADER
assert_eq!(bytes.len(), BBHEADER_LEN);
assert_eq!(Bbheader::parse(&bytes).unwrap(), hdr); // byte-identical round-trip

For recovering the inner TS carried in a T2-MI stream, see dvb_t2mi::inner_ts::InnerTsRecovery, which drives this header + the packet extractor for you.

Generic Stream (GSE) handoff

When Bbheader::parse yields matype.ts_gs == TsGs::Gse, the data field carries GSE (Generic Stream Encapsulation) packets (EN 302 307-1 / EN 302 755). GSE parsing is out of scope for this crate — hand the data field to the third-party dvb-gse crate:

use dvb_bbframe::header::{Bbheader, TsGs, BBHEADER_LEN};

let hdr = Bbheader::parse(df_bytes).unwrap();
let data_field = &df_bytes[BBHEADER_LEN..];
match hdr.matype.ts_gs {
    TsGs::Ts => {
        /* TS user packets: dvb_bbframe::packet::up_iter(data_field, &hdr) */
    }
    TsGs::Gse => {
        /* GSE packets: hand `data_field` to the `dvb-gse` crate */
    }
    other => {
        /* GFPS / GCS — generic continuous or packetized */
    }
}

RFU policy

BBFrame reserved_future_use bits are emitted as 1 and reserved_zero_future_use bits as 0, following the DVB convention. Parsers accept any value (no rejection on non-zero RFU) for forward compatibility.

Re-exports

pub use error::Error;

pub use error::Result;

Modules

crc

CRC-8 encoder per EN 302 755 Annex F / EN 302 307-1 §5.1.4.

error

Error type for BBFrame parsing and serialization.

header

BBHEADER (Base-Band Header) parser and builder.

issy

ISSY (Input Stream SYnchronizer) field decoding per EN 302 755 §5.1.7 / Annex C.

packet

User packet extraction from BBFrame data fields.

pump

BbframePump — per-PLP BBFrame→inner-TS pump.