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## LegacyPlayer

# Struct LegacyPlayer

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    pub struct LegacyPlayer<B: PlayerBackend> {
        inner: B,
        capabilities: Capabilities,
        has_item: bool,
    }

## Fields§

§ `inner: B` § `capabilities: Capabilities`

Declared at construction: this wrapper is generic over engines with very different abilities, and only the composition root knows which one it just built. Guessing here would reintroduce exactly the inference DR-238 removed.

§ `has_item: bool`

The old trait has no notion of “opening”, so this is the best the wrapper can do: it knows an item was handed over, not whether the engine is ready for one. That gap is the whole problem.

## Implementations§

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### impl<B: PlayerBackend> LegacyPlayer<B>

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#### pub fn new(inner: B, capabilities: Capabilities) -> Self

## Trait Implementations§

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### impl<B: PlayerBackend + Send> MediaPlayer for LegacyPlayer<B>

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#### fn open(&mut self, req: OpenRequest) -> Result<(), PlayerError>

Load, play, then seek — the sequence every caller used to write.

The seek is issued immediately, because a caller has no way to know when the engine becomes ready. On an engine whose load is asynchronous it fails and is discarded, and playback begins at zero: DR-241, reproduced.

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#### fn set_muted(&mut self, _muted: bool) -> Result<(), PlayerError>

The old trait has no mute. Folding it into volume would lose the user’s level, so this reports unsupported rather than pretending.

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#### fn play(&mut self) -> Result<(), PlayerError>

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#### fn pause(&mut self) -> Result<(), PlayerError>

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#### fn close(&mut self) -> Result<(), PlayerError>

Stop and release the current item. Read more
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#### fn seek(&mut self, to: Duration) -> Result<(), PlayerError>

Seek to an absolute position on the item’s own timeline. Read more
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#### fn set_volume(&mut self, volume: f32) -> Result<(), PlayerError>

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#### fn set_rate(&mut self, _rate: f64) -> Result<(), PlayerError>

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#### fn select_audio_track(&mut self, index: Option<i32>) -> Result<(), PlayerError>

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#### fn select_subtitle_track( &mut self, index: Option<i32>, ) -> Result<(), PlayerError>

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#### fn snapshot(&self) -> PlaybackSnapshot

One coherent read of the engine’s state.
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#### fn set_audio_settings( &mut self, settings: &AudioSettings, ) -> Result<(), PlayerError>

Apply EQ, normalisation and gapless settings. Read more
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#### fn audio_settings(&self) -> AudioSettings

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#### fn capabilities(&self) -> Capabilities

## Auto Trait Implementations§

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### impl<B> Freeze for LegacyPlayer<B>
where B: Freeze,

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### impl<B> RefUnwindSafe for LegacyPlayer<B>
where B: RefUnwindSafe,

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### impl<B> Send for LegacyPlayer<B>

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### impl<B> Sync for LegacyPlayer<B>

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### impl<B> Unpin for LegacyPlayer<B>
where B: Unpin,

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### impl<B> UnsafeUnpin for LegacyPlayer<B>
where B: UnsafeUnpin,

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### impl<B> UnwindSafe for LegacyPlayer<B>
where B: UnwindSafe,

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> PolicyExt for T
where T: ?Sized,

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#### fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new `Policy` that returns [`Action::Follow`] only if `self` and `other` return `Action::Follow`. Read more
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#### fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new `Policy` that returns [`Action::Follow`] if either `self` or `other` returns `Action::Follow`. Read more
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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more