Enum FieldTransform 

pub enum FieldTransform<T> {
    Identity,
    Fixed(T),
}

How one output caps field is derived from the corresponding input field.

Fixed carries a whole caps value, so it also expresses a ranged retarget (Dim::Range, Rate::Any, ANY_SAMPLE_RATE): the alternative a downstream capsfilter then pins. A scale-by-rational variant (width * num / den) was considered and left out: no element derives a field that way, so the vocabulary stays at these two until one does.

Variants

Identity

Output field == input field. The declaration that makes the field a passthrough, so the solver couples it backward.

Fixed(T)

Output field is this value, whatever the input carries.

Implementations

impl<T: Clone> FieldTransform<T>

pub fn apply(&self, input: &T) -> T

Derive the output field from input.

impl<T> FieldTransform<T>

pub fn is_identity(&self) -> bool

Trait Implementations

impl<T: Clone> Clone for FieldTransform<T>

fn clone(&self) -> FieldTransform<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for FieldTransform<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for FieldTransform<T>

fn eq(&self, other: &FieldTransform<T>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for FieldTransform<T>