#[non_exhaustive]pub enum XavcFlickerAdaptiveQuantization {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against XavcFlickerAdaptiveQuantization
, 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 xavcflickeradaptivequantization = unimplemented!();
match xavcflickeradaptivequantization {
XavcFlickerAdaptiveQuantization::Disabled => { /* ... */ },
XavcFlickerAdaptiveQuantization::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when xavcflickeradaptivequantization
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant XavcFlickerAdaptiveQuantization::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
XavcFlickerAdaptiveQuantization::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 XavcFlickerAdaptiveQuantization::NewFeature
is defined.
Specifically, when xavcflickeradaptivequantization
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on XavcFlickerAdaptiveQuantization::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. The best way to set up adaptive quantization is to keep the default value, Auto, for the setting Adaptive quantization. When you do so, MediaConvert automatically applies the best types of quantization for your video content. Include this setting in your JSON job specification only when you choose to change the default value for Adaptive quantization. Enable this setting to have the encoder reduce I-frame pop. I-frame pop appears as a visual flicker that can arise when the encoder saves bits by copying some macroblocks many times from frame to frame, and then refreshes them at the I-frame. When you enable this setting, the encoder updates these macroblocks slightly more often to smooth out the flicker. This setting is disabled by default. Related setting: In addition to enabling this setting, you must also set Adaptive quantization to a value other than Off or Auto. Use Adaptive quantization to adjust the degree of smoothing that Flicker adaptive quantization provides.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
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 XavcFlickerAdaptiveQuantization
impl XavcFlickerAdaptiveQuantization
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 XavcFlickerAdaptiveQuantization
impl AsRef<str> for XavcFlickerAdaptiveQuantization
source§impl Clone for XavcFlickerAdaptiveQuantization
impl Clone for XavcFlickerAdaptiveQuantization
source§fn clone(&self) -> XavcFlickerAdaptiveQuantization
fn clone(&self) -> XavcFlickerAdaptiveQuantization
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl From<&str> for XavcFlickerAdaptiveQuantization
impl From<&str> for XavcFlickerAdaptiveQuantization
source§impl Ord for XavcFlickerAdaptiveQuantization
impl Ord for XavcFlickerAdaptiveQuantization
source§fn cmp(&self, other: &XavcFlickerAdaptiveQuantization) -> Ordering
fn cmp(&self, other: &XavcFlickerAdaptiveQuantization) -> 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 XavcFlickerAdaptiveQuantization
impl PartialEq for XavcFlickerAdaptiveQuantization
source§fn eq(&self, other: &XavcFlickerAdaptiveQuantization) -> bool
fn eq(&self, other: &XavcFlickerAdaptiveQuantization) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for XavcFlickerAdaptiveQuantization
impl PartialOrd for XavcFlickerAdaptiveQuantization
source§fn partial_cmp(
&self,
other: &XavcFlickerAdaptiveQuantization
) -> Option<Ordering>
fn partial_cmp( &self, other: &XavcFlickerAdaptiveQuantization ) -> 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 XavcFlickerAdaptiveQuantization
impl StructuralPartialEq for XavcFlickerAdaptiveQuantization
Auto Trait Implementations§
impl Freeze for XavcFlickerAdaptiveQuantization
impl RefUnwindSafe for XavcFlickerAdaptiveQuantization
impl Send for XavcFlickerAdaptiveQuantization
impl Sync for XavcFlickerAdaptiveQuantization
impl Unpin for XavcFlickerAdaptiveQuantization
impl UnwindSafe for XavcFlickerAdaptiveQuantization
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