dvb-si 1.0.1

ETSI EN 300 468 DVB Service Information parser + builder. MPEG-2 PSI included.
Documentation 
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//! SI-specific traits. `Parse` / `Serialize` are provided by `dvb_common`
//! and imported directly at call sites.

use dvb_common::{Parse, Serialize};

/// Contract every DVB descriptor implements.
///
/// Descriptors are length-prefixed payloads inside tables. The
/// `TAG` constant ties a struct to its wire identifier.
pub trait Descriptor<'a>: Parse<'a> + Serialize {
    /// Descriptor tag byte — the wire identifier.
    const TAG: u8;

    /// Length of the payload portion (NOT including the 2 header bytes).
    fn descriptor_length(&self) -> u8;
}

/// Contract every section-carried table implements.
pub trait Table<'a>: Parse<'a> + Serialize {
    /// Expected `table_id` for this table.
    ///
    /// Tables that occupy a range of table_ids (e.g. EIT schedule which covers
    /// 0x50..=0x5F) expose a range helper on the type itself rather than a
    /// single `TABLE_ID` constant.
    const TABLE_ID: u8;

    /// PID on which this table is typically carried.
    ///
    /// Some tables (PMT) use per-programme PIDs signalled by PAT; those
    /// return `0x0000` here and the consumer is expected to know better.
    const PID: u16;
}