cros_codecs::utils

Struct UserPtrFrame

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pub struct UserPtrFrame {
    pub buffers: Vec<*mut u8>,
    pub mem_layout: Layout,
    pub layout: FrameLayout,
}
Expand description

A structure that holds user-allocated memory for a frame as well as its layout.

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§buffers: Vec<*mut u8>§mem_layout: Layout§layout: FrameLayout

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impl UserPtrFrame

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pub fn new_nv12(size: Resolution) -> Self

Allocate enough memory to back a NV12 frame of size dimension.

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pub fn alloc(layout: FrameLayout, buffer_size: usize) -> Self

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impl Debug for UserPtrFrame

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

Formats the value using the given formatter. Read more
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impl Drop for UserPtrFrame

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl ExternalBufferDescriptor for UserPtrFrame

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const MEMORY_TYPE: MemoryType = libva::MemoryType::UserPtr

Memory type to set for VASurfaceAttribMemoryType.
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type DescriptorAttribute = _VASurfaceAttribExternalBuffers

Type of the descriptor to be set with VASurfaceAttribExternalBuffers.
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fn va_surface_attribute(&mut self) -> Self::DescriptorAttribute

Returns the Self::DescriptorAttribute instance allowing this memory to be imported into VAAPI.

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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, 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> SurfaceMemoryDescriptor for T
where T: ExternalBufferDescriptor, <T as ExternalBufferDescriptor>::DescriptorAttribute: 'static,

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fn add_attrs( &mut self, attrs: &mut Vec<_VASurfaceAttrib>, ) -> Option<Box<dyn Any>>

Add the required attributes to attr in order to attach the memory of this descriptor to the surface when it is created. Read more
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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.