#[non_exhaustive]pub enum AacAudioDescriptionBroadcasterMix {
BroadcasterMixedAd,
Normal,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AacAudioDescriptionBroadcasterMix
, 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 aacaudiodescriptionbroadcastermix = unimplemented!();
match aacaudiodescriptionbroadcastermix {
AacAudioDescriptionBroadcasterMix::BroadcasterMixedAd => { /* ... */ },
AacAudioDescriptionBroadcasterMix::Normal => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when aacaudiodescriptionbroadcastermix
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AacAudioDescriptionBroadcasterMix::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AacAudioDescriptionBroadcasterMix::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 AacAudioDescriptionBroadcasterMix::NewFeature
is defined.
Specifically, when aacaudiodescriptionbroadcastermix
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AacAudioDescriptionBroadcasterMix::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. Choose BROADCASTER_MIXED_AD when the input contains pre-mixed main audio + audio description (AD) as a stereo pair. The value for AudioType will be set to 3, which signals to downstream systems that this stream contains “broadcaster mixed AD”. Note that the input received by the encoder must contain pre-mixed audio; the encoder does not perform the mixing. When you choose BROADCASTER_MIXED_AD, the encoder ignores any values you provide in AudioType and FollowInputAudioType. Choose NORMAL when the input does not contain pre-mixed audio + audio description (AD). In this case, the encoder will use any values you provide for AudioType and FollowInputAudioType.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
BroadcasterMixedAd
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 AacAudioDescriptionBroadcasterMix
impl AacAudioDescriptionBroadcasterMix
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 AacAudioDescriptionBroadcasterMix
impl AsRef<str> for AacAudioDescriptionBroadcasterMix
source§impl Clone for AacAudioDescriptionBroadcasterMix
impl Clone for AacAudioDescriptionBroadcasterMix
source§fn clone(&self) -> AacAudioDescriptionBroadcasterMix
fn clone(&self) -> AacAudioDescriptionBroadcasterMix
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 AacAudioDescriptionBroadcasterMix
impl From<&str> for AacAudioDescriptionBroadcasterMix
source§impl Ord for AacAudioDescriptionBroadcasterMix
impl Ord for AacAudioDescriptionBroadcasterMix
source§fn cmp(&self, other: &AacAudioDescriptionBroadcasterMix) -> Ordering
fn cmp(&self, other: &AacAudioDescriptionBroadcasterMix) -> 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 AacAudioDescriptionBroadcasterMix
impl PartialEq for AacAudioDescriptionBroadcasterMix
source§fn eq(&self, other: &AacAudioDescriptionBroadcasterMix) -> bool
fn eq(&self, other: &AacAudioDescriptionBroadcasterMix) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for AacAudioDescriptionBroadcasterMix
impl PartialOrd for AacAudioDescriptionBroadcasterMix
source§fn partial_cmp(
&self,
other: &AacAudioDescriptionBroadcasterMix
) -> Option<Ordering>
fn partial_cmp( &self, other: &AacAudioDescriptionBroadcasterMix ) -> 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 AacAudioDescriptionBroadcasterMix
impl StructuralPartialEq for AacAudioDescriptionBroadcasterMix
Auto Trait Implementations§
impl Freeze for AacAudioDescriptionBroadcasterMix
impl RefUnwindSafe for AacAudioDescriptionBroadcasterMix
impl Send for AacAudioDescriptionBroadcasterMix
impl Sync for AacAudioDescriptionBroadcasterMix
impl Unpin for AacAudioDescriptionBroadcasterMix
impl UnwindSafe for AacAudioDescriptionBroadcasterMix
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