dvb-si

ETSI EN 300 468 DVB Service Information parser and builder, plus the MPEG-2 PSI tables it builds on, the DVB-allocated companion tables, and the DSM-CC data carousel.

Complete table coverage: every allocated table_id in EN 300 468 V1.19.1 Table 2 is implemented — 29 tables, each with a symmetric Parse / Serialize pair and round-trip tests. Layouts are derived from the ETSI specs (vendored in the repo and transcribed into reviewable markdown) and validated against live broadcast captures.

Table coverage

Every table: typed header fields, symmetric parse/serialize, round-trip tested. Per the crate's zero-copy convention, descriptor loops and repeated sub-structures are borrowed &[u8] slices the caller walks with the descriptor parsers — noted below only where a table goes further or stays deliberately raw.

Remaining table_id values are reserved or user-defined in EN 300 468 V1.19.1 Table 2 — there is nothing standardized left to implement.

DSM-CC data carousel

The carousel module types the download-protocol payloads carried inside DSM-CC sections (ISO/IEC 13818-6 §7.2/§7.3 as profiled by DVB — TR 101 202, TS 102 006 SSU, TS 102 809 object carousels):

Validated byte-exact against a live French-TNT (M6 HbbTV) capture in the test suite. BIOP object-carousel payloads above this layer are out of scope.

Descriptors

29 descriptors parse into typed structs; any other tag passes through as raw bytes (tag + payload preserved):

Text decoding

EN 300 468 Annex A: the default Latin table glyph-for-glyph per Figure A.1 (ISO 6937 superset — € at 0xA4, full non-spacing diacritic row with precomposed forms + combining-mark fallback, every position pinned by tests), ISO 8859-n via encoding_rs, UTF-8 (selector 0x15), UCS-2 BE (0x11), Annex A.2 control codes.

Spec grounding

Every layout is cited. The repo vendors the ETSI PDFs and transcribes their syntax tables into reviewable markdown (docs/): EN 300 468 V1.19.1 (2025-02), TS 102 323, TS 102 006, EN 301 192, TS 102 809, TS 102 772, EN 303 560, TR 101 202 — plus a provenance-documented hand transcription for ISO/IEC 13818-6 (not freely redistributable). The crate has been through four adversarial spec-audit rounds; fixture tests run against real transponder captures.

Usage

use dvb_common::Parse;
use dvb_si::tables::sdt::Sdt;

// `section_bytes`: one complete SDT section, e.g. from `SectionReassembler`.
let sdt = Sdt::parse(section_bytes)?;
for service in &sdt.services {
    println!("service_id = {}", service.service_id);
}

Principles

• Spec fidelity. Every field in a section's syntax appears in the parsed struct.
• Parse and construct. Every parser has a symmetric serializer; round-trip is tested.
• Zero-copy where possible. Parsed types borrow from the input via <'a> lifetimes.
• No magic numbers. Every hex literal outside #[cfg(test)] is a named constant or enum.

Features

Default: chrono (MJD+BCD → DateTime<Utc>), ts (TS packet + SectionReassembler), serde.

dvb-si = { version = "1.0", default-features = false }  # tight build

Family

dvb-common (traits + CRC-32) · dvb-t2mi (T2-MI, all 12 packet types) · dvb-bbframe (S2/S2X/T2 BBFRAME). For GSE see the existing dvb-gse crate.

License

Licensed under either of MIT or Apache-2.0, at your option.