#[non_exhaustive]pub enum Av1FramerateControl {
InitializeFromSource,
Specified,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against Av1FramerateControl
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let av1frameratecontrol = unimplemented!();
match av1frameratecontrol {
Av1FramerateControl::InitializeFromSource => { /* ... */ },
Av1FramerateControl::Specified => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when av1frameratecontrol
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant Av1FramerateControl::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
Av1FramerateControl::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant Av1FramerateControl::NewFeature
is defined.
Specifically, when av1frameratecontrol
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on Av1FramerateControl::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms. Use the Framerate setting to specify the frame rate for this output. If you want to keep the same frame rate as the input video, choose Follow source. If you want to do frame rate conversion, choose a frame rate from the dropdown list or choose Custom. The framerates shown in the dropdown list are decimal approximations of fractions. If you choose Custom, specify your frame rate as a fraction.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
InitializeFromSource
Specified
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl Av1FramerateControl
impl Av1FramerateControl
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for Av1FramerateControl
impl AsRef<str> for Av1FramerateControl
source§impl Clone for Av1FramerateControl
impl Clone for Av1FramerateControl
source§fn clone(&self) -> Av1FramerateControl
fn clone(&self) -> Av1FramerateControl
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for Av1FramerateControl
impl Debug for Av1FramerateControl
source§impl Display for Av1FramerateControl
impl Display for Av1FramerateControl
source§impl From<&str> for Av1FramerateControl
impl From<&str> for Av1FramerateControl
source§impl FromStr for Av1FramerateControl
impl FromStr for Av1FramerateControl
source§impl Hash for Av1FramerateControl
impl Hash for Av1FramerateControl
source§impl Ord for Av1FramerateControl
impl Ord for Av1FramerateControl
source§fn cmp(&self, other: &Av1FramerateControl) -> Ordering
fn cmp(&self, other: &Av1FramerateControl) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for Av1FramerateControl
impl PartialEq for Av1FramerateControl
source§fn eq(&self, other: &Av1FramerateControl) -> bool
fn eq(&self, other: &Av1FramerateControl) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for Av1FramerateControl
impl PartialOrd for Av1FramerateControl
source§fn partial_cmp(&self, other: &Av1FramerateControl) -> Option<Ordering>
fn partial_cmp(&self, other: &Av1FramerateControl) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for Av1FramerateControl
impl StructuralPartialEq for Av1FramerateControl
Auto Trait Implementations§
impl Freeze for Av1FramerateControl
impl RefUnwindSafe for Av1FramerateControl
impl Send for Av1FramerateControl
impl Sync for Av1FramerateControl
impl Unpin for Av1FramerateControl
impl UnwindSafe for Av1FramerateControl
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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