uses transform codec

CURIE: gmeow:usesTransformCodec
IRI: https://blackcatinformatics.ca/gmeow/usesTransformCodec
Category: property
Defined by: gmeow:slices/gts
Box roles: ConfigBox role, RBox role (What is this?)

A transform codec declared in a segment's catalog and used by at least one of its frames (spec §8). Non-functional: payloads carry stackable codec chains.

Structure

Property shape: object property; gmeow:GTSSegment -> gmeow:TransformCodec

Practical Pattern

Use gmeow:usesTransformCodec from gmeow:GTSSegment to gmeow:TransformCodec when the relationship itself belongs in the native GMEOW graph.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Dist Package

Source: slices/core/gts/examples/dist-package.ttl
Examples catalog: open in catalog#example-slices-core-gts-examples-dist-package

@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex:    <https://blackcatinformatics.ca/gmeow/examples/> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .



ex:gts-dist-segment-core
    a gmeow:GTSSegment ;
    rdfs:label "core dist segment"@en ;
    gmeow:gtsSegmentOf ex:gts-dist-package-001 ;
    gmeow:embodies ex:gmeow-ontology-expression-001 ;
    gmeow:gtsSegmentIndex "0"^^xsd:nonNegativeInteger ;
    gmeow:gtsHeadId "blake3:929d046b2300eb09424f2d46b07fb793ad97ddde5e9fdb25ebefe245e8da8be8" ;
    gmeow:gtsProfile gmeow:gtsProfileDist ;
    gmeow:usesTransformCodec gmeow:codecZstd .

ex:gts-dist-segment-music
    a gmeow:GTSSegment ;
    rdfs:label "appended music-extension segment"@en ;
    gmeow:gtsSegmentOf ex:gts-dist-package-001 ;
    gmeow:embodies ex:gmeow-ontology-expression-001 ;
    gmeow:gtsSegmentIndex "1"^^xsd:nonNegativeInteger ;
    gmeow:gtsHeadId "blake3:167704cc2c533090b63ff3bf38b4fcff2bb70b33f996aa22f53025044e310ee8" ;
    gmeow:gtsProfile gmeow:gtsProfileGeneric ;
    gmeow:usesTransformCodec gmeow:codecZstd .

Common Companion Terms

gmeow:GTSSegment, gmeow:TransformCodec

Usage Advice

Use when

Use to record which catalog codecs a segment's frames actually employ — so a reader can tell, before decoding, which libraries or keys it must hold to read the segment.

Avoid when

Avoid treating it as a single codec per segment (payloads stack chains, so it is non-functional) and avoid using it to describe a single frame's exact codec stack; it is the segment-level catalog-in-use.

How to use

List each gmeow:TransformCodec the segment uses; read each codec's gmeow:codecClass to anticipate the degradation path — unknown-codec or missing-key opacity — when a capability is absent.

Examples

ex:seg0 gmeow:usesTransformCodec gmeow:codecZstd, gmeow:codecCoseEncrypt0.