#[non_exhaustive]pub enum DashIsoPlaybackDeviceCompatibility {
CencV1,
UnencryptedSei,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DashIsoPlaybackDeviceCompatibility
, 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 dashisoplaybackdevicecompatibility = unimplemented!();
match dashisoplaybackdevicecompatibility {
DashIsoPlaybackDeviceCompatibility::CencV1 => { /* ... */ },
DashIsoPlaybackDeviceCompatibility::UnencryptedSei => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when dashisoplaybackdevicecompatibility
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DashIsoPlaybackDeviceCompatibility::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DashIsoPlaybackDeviceCompatibility::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 DashIsoPlaybackDeviceCompatibility::NewFeature
is defined.
Specifically, when dashisoplaybackdevicecompatibility
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DashIsoPlaybackDeviceCompatibility::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 can improve the compatibility of your output with video players on obsolete devices. It applies only to DASH H.264 outputs with DRM encryption. Choose Unencrypted SEI only to correct problems with playback on older devices. Otherwise, keep the default setting CENC v1. If you choose Unencrypted SEI, for that output, the service will exclude the access unit delimiter and will leave the SEI NAL units unencrypted.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
CencV1
UnencryptedSei
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 DashIsoPlaybackDeviceCompatibility
impl DashIsoPlaybackDeviceCompatibility
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 DashIsoPlaybackDeviceCompatibility
impl Clone for DashIsoPlaybackDeviceCompatibility
source§fn clone(&self) -> DashIsoPlaybackDeviceCompatibility
fn clone(&self) -> DashIsoPlaybackDeviceCompatibility
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 DashIsoPlaybackDeviceCompatibility
impl From<&str> for DashIsoPlaybackDeviceCompatibility
source§impl Ord for DashIsoPlaybackDeviceCompatibility
impl Ord for DashIsoPlaybackDeviceCompatibility
source§fn cmp(&self, other: &DashIsoPlaybackDeviceCompatibility) -> Ordering
fn cmp(&self, other: &DashIsoPlaybackDeviceCompatibility) -> 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 DashIsoPlaybackDeviceCompatibility
impl PartialEq for DashIsoPlaybackDeviceCompatibility
source§fn eq(&self, other: &DashIsoPlaybackDeviceCompatibility) -> bool
fn eq(&self, other: &DashIsoPlaybackDeviceCompatibility) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for DashIsoPlaybackDeviceCompatibility
impl PartialOrd for DashIsoPlaybackDeviceCompatibility
source§fn partial_cmp(
&self,
other: &DashIsoPlaybackDeviceCompatibility
) -> Option<Ordering>
fn partial_cmp( &self, other: &DashIsoPlaybackDeviceCompatibility ) -> 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 DashIsoPlaybackDeviceCompatibility
impl StructuralPartialEq for DashIsoPlaybackDeviceCompatibility
Auto Trait Implementations§
impl Freeze for DashIsoPlaybackDeviceCompatibility
impl RefUnwindSafe for DashIsoPlaybackDeviceCompatibility
impl Send for DashIsoPlaybackDeviceCompatibility
impl Sync for DashIsoPlaybackDeviceCompatibility
impl Unpin for DashIsoPlaybackDeviceCompatibility
impl UnwindSafe for DashIsoPlaybackDeviceCompatibility
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