#[non_exhaustive]pub enum UncompressedScanTypeConversionMode {
Interlaced,
InterlacedOptimize,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against UncompressedScanTypeConversionMode
, 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 uncompressedscantypeconversionmode = unimplemented!();
match uncompressedscantypeconversionmode {
UncompressedScanTypeConversionMode::Interlaced => { /* ... */ },
UncompressedScanTypeConversionMode::InterlacedOptimize => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when uncompressedscantypeconversionmode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant UncompressedScanTypeConversionMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
UncompressedScanTypeConversionMode::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 UncompressedScanTypeConversionMode::NewFeature
is defined.
Specifically, when uncompressedscantypeconversionmode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on UncompressedScanTypeConversionMode::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. Use this setting for interlaced outputs, when your output frame rate is half of your input frame rate. In this situation, choose Optimized interlacing to create a better quality interlaced output. In this case, each progressive frame from the input corresponds to an interlaced field in the output. Keep the default value, Basic interlacing, for all other output frame rates. With basic interlacing, MediaConvert performs any frame rate conversion first and then interlaces the frames. When you choose Optimized interlacing and you set your output frame rate to a value that isn’t suitable for optimized interlacing, MediaConvert automatically falls back to basic interlacing. Required settings: To use optimized interlacing, you must set Telecine to None or Soft. You can’t use optimized interlacing for hard telecine outputs. You must also set Interlace mode to a value other than Progressive.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Interlaced
InterlacedOptimize
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 UncompressedScanTypeConversionMode
impl UncompressedScanTypeConversionMode
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 Clone for UncompressedScanTypeConversionMode
impl Clone for UncompressedScanTypeConversionMode
source§fn clone(&self) -> UncompressedScanTypeConversionMode
fn clone(&self) -> UncompressedScanTypeConversionMode
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 UncompressedScanTypeConversionMode
impl From<&str> for UncompressedScanTypeConversionMode
source§impl Ord for UncompressedScanTypeConversionMode
impl Ord for UncompressedScanTypeConversionMode
source§fn cmp(&self, other: &UncompressedScanTypeConversionMode) -> Ordering
fn cmp(&self, other: &UncompressedScanTypeConversionMode) -> 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 UncompressedScanTypeConversionMode
impl PartialEq for UncompressedScanTypeConversionMode
source§fn eq(&self, other: &UncompressedScanTypeConversionMode) -> bool
fn eq(&self, other: &UncompressedScanTypeConversionMode) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for UncompressedScanTypeConversionMode
impl PartialOrd for UncompressedScanTypeConversionMode
source§fn partial_cmp(
&self,
other: &UncompressedScanTypeConversionMode
) -> Option<Ordering>
fn partial_cmp( &self, other: &UncompressedScanTypeConversionMode ) -> 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 UncompressedScanTypeConversionMode
impl StructuralPartialEq for UncompressedScanTypeConversionMode
Auto Trait Implementations§
impl Freeze for UncompressedScanTypeConversionMode
impl RefUnwindSafe for UncompressedScanTypeConversionMode
impl Send for UncompressedScanTypeConversionMode
impl Sync for UncompressedScanTypeConversionMode
impl Unpin for UncompressedScanTypeConversionMode
impl UnwindSafe for UncompressedScanTypeConversionMode
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