SourceStructureExport

enum SourceStructureExport

Declared in Sources/PrismCore/Probe/SourceStructure.swift · PrismCore 3.5.4

How much of a structure export a caller is willing to pay for.

Opt-in, and .none by default, because the two paying steps are real I/O against the source: the layout scan re-reads the head, and the index load is the same nudge seek SegmentPlan pays (two Range requests on a tail-Cues Matroska). The intended caller is an out-of-process probe reading a local descriptor, where both are free; a host probing over a network to decide how to route must not pay them, and with the default it does not.

Cases

none source

case none

No extra reads. SourceStructure.unknown.

layout source

case layout

Walk the container's top-level elements to find the header/media boundary and, where the container says so, where its index lives.

full source

case full

layout, plus a bounded index load and the keyframe timestamps it produced (subject to SourceStructure/maxExportedKeyframes).

This one moves the read position: the load is a seek to the tail and a seek back to the head, exactly as SegmentPlan.build does it. Harmless for a context nobody adopts, and a context that is adopted seeks to its own start anyway — but it is the reason this is not the default.

Generated from the public symbols of PrismCore 3.5.4. All types