Enum aws_sdk_mediaconvert::types::Vc3Class
source · #[non_exhaustive]pub enum Vc3Class {
Class1458Bit,
Class22010Bit,
Class2208Bit,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against Vc3Class
, 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 vc3class = unimplemented!();
match vc3class {
Vc3Class::Class1458Bit => { /* ... */ },
Vc3Class::Class22010Bit => { /* ... */ },
Vc3Class::Class2208Bit => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when vc3class
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant Vc3Class::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
Vc3Class::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 Vc3Class::NewFeature
is defined.
Specifically, when vc3class
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on Vc3Class::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. Specify the VC3 class to choose the quality characteristics for this output. VC3 class, together with the settings Framerate (framerateNumerator and framerateDenominator) and Resolution (height and width), determine your output bitrate. For example, say that your video resolution is 1920x1080 and your framerate is 29.97. Then Class 145 gives you an output with a bitrate of approximately 145 Mbps and Class 220 gives you and output with a bitrate of approximately 220 Mbps. VC3 class also specifies the color bit depth of your output.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Class1458Bit
Class22010Bit
Class2208Bit
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§
Trait Implementations§
source§impl Ord for Vc3Class
impl Ord for Vc3Class
source§impl PartialEq for Vc3Class
impl PartialEq for Vc3Class
source§impl PartialOrd for Vc3Class
impl PartialOrd for Vc3Class
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 Vc3Class
impl StructuralPartialEq for Vc3Class
Auto Trait Implementations§
impl Freeze for Vc3Class
impl RefUnwindSafe for Vc3Class
impl Send for Vc3Class
impl Sync for Vc3Class
impl Unpin for Vc3Class
impl UnwindSafe for Vc3Class
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