#[non_exhaustive]pub enum DeinterlacerControl {
ForceAllFrames,
Normal,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DeinterlacerControl
, 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 deinterlacercontrol = unimplemented!();
match deinterlacercontrol {
DeinterlacerControl::ForceAllFrames => { /* ... */ },
DeinterlacerControl::Normal => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when deinterlacercontrol
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DeinterlacerControl::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DeinterlacerControl::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 DeinterlacerControl::NewFeature
is defined.
Specifically, when deinterlacercontrol
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DeinterlacerControl::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.
- When set to NORMAL (default), the deinterlacer does not convert frames that are tagged in metadata as progressive. It will only convert those that are tagged as some other type. - When set to FORCE_ALL_FRAMES, the deinterlacer converts every frame to progressive - even those that are already tagged as progressive. Turn Force mode on only if there is a good chance that the metadata has tagged frames as progressive when they are not progressive. Do not turn on otherwise; processing frames that are already progressive into progressive will probably result in lower quality video.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
ForceAllFrames
Normal
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 DeinterlacerControl
impl DeinterlacerControl
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 DeinterlacerControl
impl AsRef<str> for DeinterlacerControl
source§impl Clone for DeinterlacerControl
impl Clone for DeinterlacerControl
source§fn clone(&self) -> DeinterlacerControl
fn clone(&self) -> DeinterlacerControl
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for DeinterlacerControl
impl Debug for DeinterlacerControl
source§impl Display for DeinterlacerControl
impl Display for DeinterlacerControl
source§impl From<&str> for DeinterlacerControl
impl From<&str> for DeinterlacerControl
source§impl FromStr for DeinterlacerControl
impl FromStr for DeinterlacerControl
source§impl Hash for DeinterlacerControl
impl Hash for DeinterlacerControl
source§impl Ord for DeinterlacerControl
impl Ord for DeinterlacerControl
source§fn cmp(&self, other: &DeinterlacerControl) -> Ordering
fn cmp(&self, other: &DeinterlacerControl) -> 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 DeinterlacerControl
impl PartialEq for DeinterlacerControl
source§fn eq(&self, other: &DeinterlacerControl) -> bool
fn eq(&self, other: &DeinterlacerControl) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for DeinterlacerControl
impl PartialOrd for DeinterlacerControl
source§fn partial_cmp(&self, other: &DeinterlacerControl) -> Option<Ordering>
fn partial_cmp(&self, other: &DeinterlacerControl) -> 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 DeinterlacerControl
impl StructuralPartialEq for DeinterlacerControl
Auto Trait Implementations§
impl Freeze for DeinterlacerControl
impl RefUnwindSafe for DeinterlacerControl
impl Send for DeinterlacerControl
impl Sync for DeinterlacerControl
impl Unpin for DeinterlacerControl
impl UnwindSafe for DeinterlacerControl
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