#[non_exhaustive]pub enum XavcAdaptiveQuantization {
Auto,
High,
Higher,
Low,
Max,
Medium,
Off,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against XavcAdaptiveQuantization
, 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 xavcadaptivequantization = unimplemented!();
match xavcadaptivequantization {
XavcAdaptiveQuantization::Auto => { /* ... */ },
XavcAdaptiveQuantization::High => { /* ... */ },
XavcAdaptiveQuantization::Higher => { /* ... */ },
XavcAdaptiveQuantization::Low => { /* ... */ },
XavcAdaptiveQuantization::Max => { /* ... */ },
XavcAdaptiveQuantization::Medium => { /* ... */ },
XavcAdaptiveQuantization::Off => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when xavcadaptivequantization
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant XavcAdaptiveQuantization::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
XavcAdaptiveQuantization::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 XavcAdaptiveQuantization::NewFeature
is defined.
Specifically, when xavcadaptivequantization
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on XavcAdaptiveQuantization::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. Keep the default value, Auto, for this setting to have MediaConvert automatically apply the best types of quantization for your video content. When you want to apply your quantization settings manually, you must set Adaptive quantization to a value other than Auto. Use this setting to specify the strength of any adaptive quantization filters that you enable. If you don’t want MediaConvert to do any adaptive quantization in this transcode, set Adaptive quantization to Off. Related settings: The value that you choose here applies to the following settings: Flicker adaptive quantization (flickerAdaptiveQuantization), Spatial adaptive quantization, and Temporal adaptive quantization.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Auto
High
Higher
Low
Max
Medium
Off
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 XavcAdaptiveQuantization
impl XavcAdaptiveQuantization
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 XavcAdaptiveQuantization
impl AsRef<str> for XavcAdaptiveQuantization
source§impl Clone for XavcAdaptiveQuantization
impl Clone for XavcAdaptiveQuantization
source§fn clone(&self) -> XavcAdaptiveQuantization
fn clone(&self) -> XavcAdaptiveQuantization
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for XavcAdaptiveQuantization
impl Debug for XavcAdaptiveQuantization
source§impl Display for XavcAdaptiveQuantization
impl Display for XavcAdaptiveQuantization
source§impl From<&str> for XavcAdaptiveQuantization
impl From<&str> for XavcAdaptiveQuantization
source§impl FromStr for XavcAdaptiveQuantization
impl FromStr for XavcAdaptiveQuantization
source§impl Hash for XavcAdaptiveQuantization
impl Hash for XavcAdaptiveQuantization
source§impl Ord for XavcAdaptiveQuantization
impl Ord for XavcAdaptiveQuantization
source§fn cmp(&self, other: &XavcAdaptiveQuantization) -> Ordering
fn cmp(&self, other: &XavcAdaptiveQuantization) -> 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 XavcAdaptiveQuantization
impl PartialEq for XavcAdaptiveQuantization
source§fn eq(&self, other: &XavcAdaptiveQuantization) -> bool
fn eq(&self, other: &XavcAdaptiveQuantization) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for XavcAdaptiveQuantization
impl PartialOrd for XavcAdaptiveQuantization
source§fn partial_cmp(&self, other: &XavcAdaptiveQuantization) -> Option<Ordering>
fn partial_cmp(&self, other: &XavcAdaptiveQuantization) -> 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 XavcAdaptiveQuantization
impl StructuralPartialEq for XavcAdaptiveQuantization
Auto Trait Implementations§
impl Freeze for XavcAdaptiveQuantization
impl RefUnwindSafe for XavcAdaptiveQuantization
impl Send for XavcAdaptiveQuantization
impl Sync for XavcAdaptiveQuantization
impl Unpin for XavcAdaptiveQuantization
impl UnwindSafe for XavcAdaptiveQuantization
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