#[non_exhaustive]pub enum AvcIntraUhdQualityTuningLevel {
MultiPass,
SinglePass,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AvcIntraUhdQualityTuningLevel
, 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 avcintrauhdqualitytuninglevel = unimplemented!();
match avcintrauhdqualitytuninglevel {
AvcIntraUhdQualityTuningLevel::MultiPass => { /* ... */ },
AvcIntraUhdQualityTuningLevel::SinglePass => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when avcintrauhdqualitytuninglevel
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AvcIntraUhdQualityTuningLevel::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AvcIntraUhdQualityTuningLevel::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 AvcIntraUhdQualityTuningLevel::NewFeature
is defined.
Specifically, when avcintrauhdqualitytuninglevel
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AvcIntraUhdQualityTuningLevel::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. Optional. Use Quality tuning level to choose how many transcoding passes MediaConvert does with your video. When you choose Multi-pass, your video quality is better and your output bitrate is more accurate. That is, the actual bitrate of your output is closer to the target bitrate defined in the specification. When you choose Single-pass, your encoding time is faster. The default behavior is Single-pass.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
MultiPass
SinglePass
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 AvcIntraUhdQualityTuningLevel
impl AvcIntraUhdQualityTuningLevel
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 AvcIntraUhdQualityTuningLevel
impl AsRef<str> for AvcIntraUhdQualityTuningLevel
source§impl Clone for AvcIntraUhdQualityTuningLevel
impl Clone for AvcIntraUhdQualityTuningLevel
source§fn clone(&self) -> AvcIntraUhdQualityTuningLevel
fn clone(&self) -> AvcIntraUhdQualityTuningLevel
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 AvcIntraUhdQualityTuningLevel
impl From<&str> for AvcIntraUhdQualityTuningLevel
source§impl Hash for AvcIntraUhdQualityTuningLevel
impl Hash for AvcIntraUhdQualityTuningLevel
source§impl Ord for AvcIntraUhdQualityTuningLevel
impl Ord for AvcIntraUhdQualityTuningLevel
source§fn cmp(&self, other: &AvcIntraUhdQualityTuningLevel) -> Ordering
fn cmp(&self, other: &AvcIntraUhdQualityTuningLevel) -> 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 AvcIntraUhdQualityTuningLevel
impl PartialEq for AvcIntraUhdQualityTuningLevel
source§fn eq(&self, other: &AvcIntraUhdQualityTuningLevel) -> bool
fn eq(&self, other: &AvcIntraUhdQualityTuningLevel) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for AvcIntraUhdQualityTuningLevel
impl PartialOrd for AvcIntraUhdQualityTuningLevel
source§fn partial_cmp(&self, other: &AvcIntraUhdQualityTuningLevel) -> Option<Ordering>
fn partial_cmp(&self, other: &AvcIntraUhdQualityTuningLevel) -> 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 AvcIntraUhdQualityTuningLevel
impl StructuralPartialEq for AvcIntraUhdQualityTuningLevel
Auto Trait Implementations§
impl Freeze for AvcIntraUhdQualityTuningLevel
impl RefUnwindSafe for AvcIntraUhdQualityTuningLevel
impl Send for AvcIntraUhdQualityTuningLevel
impl Sync for AvcIntraUhdQualityTuningLevel
impl Unpin for AvcIntraUhdQualityTuningLevel
impl UnwindSafe for AvcIntraUhdQualityTuningLevel
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