#[non_exhaustive]pub enum MxfAfdSignaling {
CopyFromVideo,
NoCopy,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against MxfAfdSignaling
, 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 mxfafdsignaling = unimplemented!();
match mxfafdsignaling {
MxfAfdSignaling::CopyFromVideo => { /* ... */ },
MxfAfdSignaling::NoCopy => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when mxfafdsignaling
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant MxfAfdSignaling::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
MxfAfdSignaling::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 MxfAfdSignaling::NewFeature
is defined.
Specifically, when mxfafdsignaling
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on MxfAfdSignaling::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. Optional. When you have AFD signaling set up in your output video stream, use this setting to choose whether to also include it in the MXF wrapper. Choose Don’t copy to exclude AFD signaling from the MXF wrapper. Choose Copy from video stream to copy the AFD values from the video stream for this output to the MXF wrapper. Regardless of which option you choose, the AFD values remain in the video stream. Related settings: To set up your output to include or exclude AFD values, see AfdSignaling, under VideoDescription. On the console, find AFD signaling under the output’s video encoding settings.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
CopyFromVideo
NoCopy
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 MxfAfdSignaling
impl MxfAfdSignaling
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 MxfAfdSignaling
impl AsRef<str> for MxfAfdSignaling
source§impl Clone for MxfAfdSignaling
impl Clone for MxfAfdSignaling
source§fn clone(&self) -> MxfAfdSignaling
fn clone(&self) -> MxfAfdSignaling
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for MxfAfdSignaling
impl Debug for MxfAfdSignaling
source§impl Display for MxfAfdSignaling
impl Display for MxfAfdSignaling
source§impl From<&str> for MxfAfdSignaling
impl From<&str> for MxfAfdSignaling
source§impl FromStr for MxfAfdSignaling
impl FromStr for MxfAfdSignaling
source§impl Hash for MxfAfdSignaling
impl Hash for MxfAfdSignaling
source§impl Ord for MxfAfdSignaling
impl Ord for MxfAfdSignaling
source§fn cmp(&self, other: &MxfAfdSignaling) -> Ordering
fn cmp(&self, other: &MxfAfdSignaling) -> 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 MxfAfdSignaling
impl PartialEq for MxfAfdSignaling
source§fn eq(&self, other: &MxfAfdSignaling) -> bool
fn eq(&self, other: &MxfAfdSignaling) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for MxfAfdSignaling
impl PartialOrd for MxfAfdSignaling
source§fn partial_cmp(&self, other: &MxfAfdSignaling) -> Option<Ordering>
fn partial_cmp(&self, other: &MxfAfdSignaling) -> 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 MxfAfdSignaling
impl StructuralPartialEq for MxfAfdSignaling
Auto Trait Implementations§
impl Freeze for MxfAfdSignaling
impl RefUnwindSafe for MxfAfdSignaling
impl Send for MxfAfdSignaling
impl Sync for MxfAfdSignaling
impl Unpin for MxfAfdSignaling
impl UnwindSafe for MxfAfdSignaling
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