Struct PlaybackCapabilities 

pub struct PlaybackCapabilities {
    pub uses_webview_audio: bool,
    pub supports_native_video: bool,
}

What playback facilities this platform’s backend actually provides.

The frontend is presentation-only and must not re-derive backend facts from navigator.userAgent — that sniffing was a second copy of the same platform decision Rust already makes with cfg!, and it drifted. These flags are the single source of truth; the frontend consumes them.

TRACES: UR-003, UR-005 | DR-004, DR-023, DR-024

Fields

uses_webview_audio: bool

True when audio is rendered by a webview <audio> element rather than a native backend. Native audio exists on Linux (mpv) and Android (ExoPlayer); everything else (Windows, future desktops) uses the webview.

supports_native_video: bool

True when video can be rendered by a native surface composited behind a transparent webview. Android only: ExoPlayer draws into a SurfaceView beneath the WebView. Linux cannot do this (WebKitGTK/Wayland compositing), so it stays on the HTML5 element.

Trait Implementations

impl Debug for PlaybackCapabilities

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

Formats the value using the given formatter.

impl NamedType for PlaybackCapabilities

fn sid() -> SpectaID

fn named_data_type( type_map: &mut TypeCollection, generics: &[DataType], ) -> NamedDataType

this is equivalent to [Type::inline] but returns a [NamedDataType] instead.

fn definition_named_data_type(type_map: &mut TypeCollection) -> NamedDataType

this is equivalent to [Type::definition] but returns a [NamedDataType] instead.

impl Serialize for PlaybackCapabilities

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Type for PlaybackCapabilities

fn inline(type_map: &mut TypeCollection, generics: Generics<'_>) -> DataType

Returns the definition of a type using the provided generics.

fn reference(type_map: &mut TypeCollection, generics: &[DataType]) -> Reference

Generates a datatype corresponding to a reference to this type, as determined by its category. Getting a reference to a type implies that it should belong in the type map (since it has to be referenced from somewhere), so the output of definition will be put into the type map.

impl Flatten for PlaybackCapabilities