pub enum Context<'a> {
    Custom(Box<dyn ContextTrait<'a, Device = Device<'a>> + Send + 'a>),
    V4l2(Context),
}
Expand description

Platform context

Leaky abstraction: if you require access to platform specific features, match the enum instance to get the underlying HAL implementation.

A context is used to query platform properties, available devices and more.

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Custom(Box<dyn ContextTrait<'a, Device = Device<'a>> + Send + 'a>)

Can be used to wrap your own struct

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V4l2(Context)

Video4Linux2 context

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impl<'a> Context<'a>

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pub fn all() -> impl Iterator<Item = Context<'a>>

Trait Implementations§

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impl<'a> Context<'a> for Context<'a>

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type Device = Device<'a>

Device type supported by this platform
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fn devices(&self) -> Result<Vec<Description>>

Returns all devices currently available
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fn open_device(&self, uri: &str) -> Result<Self::Device>

Opens a device handle
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impl<'a> Default for Context<'a>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for Context<'a>

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impl<'a> Send for Context<'a>

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impl<'a> !Sync for Context<'a>

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impl<'a> Unpin for Context<'a>

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impl<'a> !UnwindSafe for Context<'a>

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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, U> Into<U> for Twhere 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, U> TryFrom<U> for Twhere 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 Twhere 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.