Struct LaunchFactory 

pub struct LaunchFactory { /* private fields */ }

A named element factory for the gst-launch text parser and the gst-inspect dump (M105): a parameterless constructor plus the element’s pad templates. Unlike ElementFactory (the autoplug factory, built from the chosen output caps), this default-constructs the element so the parser can then apply key=value properties to it, the gst_element_factory_make + g_object_set model.

Implementations

impl LaunchFactory

pub fn new( name: &'static str, templates: Vec<PadTemplate>, build: fn() -> Box<dyn DynAsyncElement>, ) -> Self

Register a transform / sink by name, pad templates, and a parameterless constructor (|| Box::new(MyElement::new())).

pub fn of<E: PadTemplates>( name: &'static str, build: fn() -> Box<dyn DynAsyncElement>, ) -> Self

Build from a PadTemplates type, pulling its templates from the trait so the registration site names only the type and constructor.

pub fn with_usable(self, usable: fn() -> bool) -> Self

Declare a check for whether this element can run on this machine right now, beyond having been compiled in: a display sink asking whether there is a display to present on, say.

Only register_alias consults it, so an autovideosink falls through a sink with nothing to draw on while a pipeline naming that sink outright still fails and says why.

pub fn with_experimental(self) -> Self

Mark this element experimental: its runtime path is host- or device-validated, not a CI promise. g2g-inspect prints it.

pub fn experimental(&self) -> bool

Whether this factory declared [with_experimental].

pub fn name(&self) -> &'static str

This factory’s element name.

pub fn usable(&self) -> bool

Whether this element can run here, per the check it declared. true when it declared none.

Trait Implementations

impl Debug for LaunchFactory

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

Formats the value using the given formatter.