AudioRenditionProduction

struct AudioRenditionProduction

Declared in Sources/PrismCore/Remux/AudioDelivery.swift · PrismCore 3.5.4

When an audio rendition of the served master is produced — the answer to "what is this session spending CPU on" that audioTrackDeliveries (how a track is carried) does not give.

It exists because the cost is invisible from outside: a bridged rendition is a decode → resample → encode chain, and a UHD remux with four TrueHD / DTS tracks used to run all four for the whole film while one was heard (issue #122, a Vision Pro running hot). The list is what a field log needs to tell an expensive session from a cheap one.

Initializers

init(streamIndex:dialogueBoost:encodes:production:)source

init(streamIndex: Int, dialogueBoost: DialogueBoostLevel?, encodes: Bool, production: Production)

No documentation comment in the source.

Instance properties

streamIndex source

let streamIndex: Int

The source stream the rendition is built from. A dialogue-boost rendition shares its stream with the DEFAULT rendition.

dialogueBoost source

let dialogueBoost: DialogueBoostLevel?

Set on a dialogue-boost rendition, nil on a track's own.

encodes source

let encodes: Bool

Whether the rendition re-encodes (bridge or boost) rather than copies.

production source

let production: Production

No documentation comment in the source.

Type methods

summary(_:)source

static func summary(_ productions: [AudioRenditionProduction]) -> String

One line for a host's startup log, e.g. eager #1; lazy #2 #3 #1/boost-medium #1/boost-high; omitted none. A stream index rather than a language: the line is for whoever reads the log next to the probe's track list, which is indexed the same way.

Enumeration

AudioRenditionProduction.Production

enum Production

No documentation comment in the source.

Cases

eager source

case eager

Produced from the first packet: the DEFAULT rendition, and every stream-copied one (copying costs a muxer, not a codec).

lazy source

case lazy

Declared in the master; nothing runs until AVPlayer fetches under its directory, which re-anchors production at the demanded segment.

omitted source

case omitted

Not declared at all. Only in the sequential shape, which has no demand seam to start a lazy rendition from: a bridged or boost rendition there would have to run for the whole film on the chance someone picks it.

Generated from the public symbols of PrismCore 3.5.4. All types