Struct ImageSource

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struct ImageSource {
    path: String,
    size: (u32, u32),
    cache: HashMap<(u32, u32), Vec<u8>>,
}

Expand description

Still image: decoded once per requested size (-frames:v 1), t ignored.

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§path: String§size: (u32, u32)§cache: HashMap<(u32, u32), Vec<u8>>

Trait Implementations§

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impl VideoSource for ImageSource

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fn size(&self) -> (u32, u32)

Native (coded) size.

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fn frame_at(&mut self, _t: f64, w: u32, h: u32, out: &mut Frame) -> bool

Decode the frame displayed at source time t, scaled (aspect-ignorant, caller picks w/h; the compositor never asks for more than native size, so upscaling need only be correct) into out. Returns false at/after EOF or on error (then out is untouched). Must be cheap for sequential increasing t (playback: keep decoding forward); may seek for other jumps.

Auto Trait Implementations§

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impl UnwindSafe for ImageSource

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<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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