#[non_exhaustive]pub enum H265SceneChangeDetect {
Disabled,
Enabled,
TransitionDetection,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against H265SceneChangeDetect
, 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 h265scenechangedetect = unimplemented!();
match h265scenechangedetect {
H265SceneChangeDetect::Disabled => { /* ... */ },
H265SceneChangeDetect::Enabled => { /* ... */ },
H265SceneChangeDetect::TransitionDetection => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when h265scenechangedetect
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant H265SceneChangeDetect::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
H265SceneChangeDetect::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 H265SceneChangeDetect::NewFeature
is defined.
Specifically, when h265scenechangedetect
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on H265SceneChangeDetect::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. Enable this setting to insert I-frames at scene changes that the service automatically detects. This improves video quality and is enabled by default. If this output uses QVBR, choose Transition detection for further video quality improvement. For more information about QVBR, see https://docs.aws.amazon.com/console/mediaconvert/cbr-vbr-qvbr.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
TransitionDetection
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 H265SceneChangeDetect
impl H265SceneChangeDetect
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 H265SceneChangeDetect
impl AsRef<str> for H265SceneChangeDetect
source§impl Clone for H265SceneChangeDetect
impl Clone for H265SceneChangeDetect
source§fn clone(&self) -> H265SceneChangeDetect
fn clone(&self) -> H265SceneChangeDetect
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for H265SceneChangeDetect
impl Debug for H265SceneChangeDetect
source§impl Display for H265SceneChangeDetect
impl Display for H265SceneChangeDetect
source§impl From<&str> for H265SceneChangeDetect
impl From<&str> for H265SceneChangeDetect
source§impl FromStr for H265SceneChangeDetect
impl FromStr for H265SceneChangeDetect
source§impl Hash for H265SceneChangeDetect
impl Hash for H265SceneChangeDetect
source§impl Ord for H265SceneChangeDetect
impl Ord for H265SceneChangeDetect
source§fn cmp(&self, other: &H265SceneChangeDetect) -> Ordering
fn cmp(&self, other: &H265SceneChangeDetect) -> 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 H265SceneChangeDetect
impl PartialEq for H265SceneChangeDetect
source§fn eq(&self, other: &H265SceneChangeDetect) -> bool
fn eq(&self, other: &H265SceneChangeDetect) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for H265SceneChangeDetect
impl PartialOrd for H265SceneChangeDetect
source§fn partial_cmp(&self, other: &H265SceneChangeDetect) -> Option<Ordering>
fn partial_cmp(&self, other: &H265SceneChangeDetect) -> 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 H265SceneChangeDetect
impl StructuralPartialEq for H265SceneChangeDetect
Auto Trait Implementations§
impl Freeze for H265SceneChangeDetect
impl RefUnwindSafe for H265SceneChangeDetect
impl Send for H265SceneChangeDetect
impl Sync for H265SceneChangeDetect
impl Unpin for H265SceneChangeDetect
impl UnwindSafe for H265SceneChangeDetect
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