#[non_exhaustive]pub enum ProresChromaSampling {
Preserve444Sampling,
SubsampleTo422,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ProresChromaSampling
, 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 proreschromasampling = unimplemented!();
match proreschromasampling {
ProresChromaSampling::Preserve444Sampling => { /* ... */ },
ProresChromaSampling::SubsampleTo422 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when proreschromasampling
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ProresChromaSampling::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ProresChromaSampling::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 ProresChromaSampling::NewFeature
is defined.
Specifically, when proreschromasampling
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ProresChromaSampling::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. This setting applies only to ProRes 4444 and ProRes 4444 XQ outputs that you create from inputs that use 4:4:4 chroma sampling. Set Preserve 4:4:4 sampling to allow outputs to also use 4:4:4 chroma sampling. You must specify a value for this setting when your output codec profile supports 4:4:4 chroma sampling. Related Settings: For Apple ProRes outputs with 4:4:4 chroma sampling: Choose Preserve 4:4:4 sampling. Use when your input has 4:4:4 chroma sampling and your output codec Profile is Apple ProRes 4444 or 4444 XQ. Note that when you choose Preserve 4:4:4 sampling, you cannot include any of the following Preprocessors: Dolby Vision, HDR10+, or Noise reducer.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Preserve444Sampling
SubsampleTo422
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 ProresChromaSampling
impl ProresChromaSampling
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 ProresChromaSampling
impl AsRef<str> for ProresChromaSampling
source§impl Clone for ProresChromaSampling
impl Clone for ProresChromaSampling
source§fn clone(&self) -> ProresChromaSampling
fn clone(&self) -> ProresChromaSampling
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ProresChromaSampling
impl Debug for ProresChromaSampling
source§impl Display for ProresChromaSampling
impl Display for ProresChromaSampling
source§impl From<&str> for ProresChromaSampling
impl From<&str> for ProresChromaSampling
source§impl FromStr for ProresChromaSampling
impl FromStr for ProresChromaSampling
source§impl Hash for ProresChromaSampling
impl Hash for ProresChromaSampling
source§impl Ord for ProresChromaSampling
impl Ord for ProresChromaSampling
source§fn cmp(&self, other: &ProresChromaSampling) -> Ordering
fn cmp(&self, other: &ProresChromaSampling) -> 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 ProresChromaSampling
impl PartialEq for ProresChromaSampling
source§fn eq(&self, other: &ProresChromaSampling) -> bool
fn eq(&self, other: &ProresChromaSampling) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ProresChromaSampling
impl PartialOrd for ProresChromaSampling
source§fn partial_cmp(&self, other: &ProresChromaSampling) -> Option<Ordering>
fn partial_cmp(&self, other: &ProresChromaSampling) -> 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 ProresChromaSampling
impl StructuralPartialEq for ProresChromaSampling
Auto Trait Implementations§
impl Freeze for ProresChromaSampling
impl RefUnwindSafe for ProresChromaSampling
impl Send for ProresChromaSampling
impl Sync for ProresChromaSampling
impl Unpin for ProresChromaSampling
impl UnwindSafe for ProresChromaSampling
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