Struct MuxCaps 

pub struct MuxCaps {
    pub codecs: &'static [CodecId],
    pub max_streams: Option<usize>,
    pub still_image: bool,
}

What a container’s muxer will accept: the machine-readable half of the rules each muxer already enforces when it writes a header.

Muxers validate at run time, and a few historically wrote a zero codec tag rather than refusing an unmappable codec. Declaring the same rules here lets a caller answer “what can this file become?” before opening an encoder — which is what rff-targets is built on.

Fields

codecs: &'static [CodecId]

Every codec this muxer can write. Empty for demux-only formats.

max_streams: Option<usize>

Most streams the container holds; None when there is no fixed limit.

still_image: bool

True when the container holds exactly ONE picture, so extra frames are refused or dropped (png, jpeg, gif, webp, avif, jxl, av2f).

Implementations

impl MuxCaps

pub const NONE: MuxCaps

A format that cannot be written at all (demux-only).

pub const fn container(codecs: &'static [CodecId]) -> MuxCaps

A container interleaving any number of streams (mp4, matroska, mpegts).

pub const fn single(codecs: &'static [CodecId]) -> MuxCaps

A file holding exactly one elementary stream (wav, mp3, ivf, ogg).

pub const fn image(self) -> MuxCaps

Narrow a single file to one picture (png, jpeg).

pub fn accepts(&self, id: CodecId) -> bool

Can this muxer write id?

pub fn accepts_media(&self, media: MediaType) -> bool

Can this muxer carry any stream of media at all?

pub fn codecs_for(&self, media: MediaType) -> impl Iterator<Item = CodecId> + '_

The codecs this muxer accepts for one media category.

Trait Implementations

impl Clone for MuxCaps

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MuxCaps

impl Debug for MuxCaps

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for MuxCaps

impl PartialEq for MuxCaps

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MuxCaps