Crate broadcast_dash 

broadcast-dash

MPEG-DASH (ISO/IEC 23009-1) manifest syntax: the MPD model, its bounded parser, the SegmentTemplate substitution grammar and the xs:duration reader.

[dependencies]
broadcast-dash = "0.1"

What it does / what it does not

Does: parse an MPD into a typed, read-only model (Mpd, Period, AdaptationSet, Representation, the three Segment addressing layers, UTCTiming, ContentProtection and the descriptor lists), under hostile-input bounds (limits::Limits), with the DASH role, continuity, URL-parameter and essential-property scheme vocabulary (descriptors), the attribute-inheritance rules a segment description needs (inherit), the $Identifier$/%0Nd template grammar (template), and the W3C XML Schema xs:duration reader (duration) every duration-valued attribute uses.

It is the read side of DASH, kept below the container hub, and it also writes an Mpd back to XML via Mpd::to_xml (the parser’s exact inverse). Its XML reader is broadcast_common::xml, shared with the Smooth Streaming manifest reader.

Does not: plan, address or fetch segments, track the live edge, read a clock or talk to a server. Those are dash-runtime’s (DashClient) and broadcast-client’s.

Examples

• parse_mpd — parse a committed MPD and print its Periods, AdaptationSets and Representations (id, bandwidth, codecs, segment addressing kind).
• build_mpd — build a small static MPD (one video + one audio Representation with SegmentTemplate) in code and render it with Mpd::to_xml.

Run with cargo run -p broadcast-dash --example parse_mpd (and build_mpd).

Re-exports

pub use error::Limit;

pub use error::MpdError;

pub use error::Unsupported;

pub use model::*;

Modules

descriptors

Descriptor scheme URIs and the typed readers over Descriptor lists.

duration

The xs:duration reader every duration-valued MPD (ISO/IEC 23009-1) attribute uses.

error

Typed errors for MPD parsing.

inherit

Attribute inheritance down Period > AdaptationSet > Representation.

limits

Hostile-input bounds for MPD parsing and segment description.

model

The consume-only MPD model (ISO/IEC 23009-1 clause 5.3, Annex B schema).

template

SegmentTemplate identifier scanning and substitution (ISO/IEC 23009-1 5.3.9.4.4, Table 21).

utc_timing

UTCTiming scheme identity (ISO/IEC 23009-1 5.8.5.7 Table 35).

xs_datetime

xs:dateTime (accepted subset) and NTP timestamp readers.