#[non_exhaustive]pub enum DashIsoImageBasedTrickPlay {
Advanced,
None,
Thumbnail,
ThumbnailAndFullframe,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DashIsoImageBasedTrickPlay
, 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 dashisoimagebasedtrickplay = unimplemented!();
match dashisoimagebasedtrickplay {
DashIsoImageBasedTrickPlay::Advanced => { /* ... */ },
DashIsoImageBasedTrickPlay::None => { /* ... */ },
DashIsoImageBasedTrickPlay::Thumbnail => { /* ... */ },
DashIsoImageBasedTrickPlay::ThumbnailAndFullframe => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when dashisoimagebasedtrickplay
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DashIsoImageBasedTrickPlay::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DashIsoImageBasedTrickPlay::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 DashIsoImageBasedTrickPlay::NewFeature
is defined.
Specifically, when dashisoimagebasedtrickplay
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DashIsoImageBasedTrickPlay::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 whether MediaConvert generates images for trick play. Keep the default value, None, to not generate any images. Choose Thumbnail to generate tiled thumbnails. Choose Thumbnail and full frame to generate tiled thumbnails and full-resolution images of single frames. MediaConvert adds an entry in the .mpd manifest for each set of images that you generate. A common application for these images is Roku trick mode. The thumbnails and full-frame images that MediaConvert creates with this feature are compatible with this Roku specification: https://developer.roku.com/docs/developer-program/media-playback/trick-mode/hls-and-dash.md
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Advanced
None
Thumbnail
ThumbnailAndFullframe
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 DashIsoImageBasedTrickPlay
impl DashIsoImageBasedTrickPlay
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 DashIsoImageBasedTrickPlay
impl AsRef<str> for DashIsoImageBasedTrickPlay
source§impl Clone for DashIsoImageBasedTrickPlay
impl Clone for DashIsoImageBasedTrickPlay
source§fn clone(&self) -> DashIsoImageBasedTrickPlay
fn clone(&self) -> DashIsoImageBasedTrickPlay
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for DashIsoImageBasedTrickPlay
impl Debug for DashIsoImageBasedTrickPlay
source§impl Display for DashIsoImageBasedTrickPlay
impl Display for DashIsoImageBasedTrickPlay
source§impl From<&str> for DashIsoImageBasedTrickPlay
impl From<&str> for DashIsoImageBasedTrickPlay
source§impl FromStr for DashIsoImageBasedTrickPlay
impl FromStr for DashIsoImageBasedTrickPlay
source§impl Hash for DashIsoImageBasedTrickPlay
impl Hash for DashIsoImageBasedTrickPlay
source§impl Ord for DashIsoImageBasedTrickPlay
impl Ord for DashIsoImageBasedTrickPlay
source§fn cmp(&self, other: &DashIsoImageBasedTrickPlay) -> Ordering
fn cmp(&self, other: &DashIsoImageBasedTrickPlay) -> 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 DashIsoImageBasedTrickPlay
impl PartialEq for DashIsoImageBasedTrickPlay
source§fn eq(&self, other: &DashIsoImageBasedTrickPlay) -> bool
fn eq(&self, other: &DashIsoImageBasedTrickPlay) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for DashIsoImageBasedTrickPlay
impl PartialOrd for DashIsoImageBasedTrickPlay
source§fn partial_cmp(&self, other: &DashIsoImageBasedTrickPlay) -> Option<Ordering>
fn partial_cmp(&self, other: &DashIsoImageBasedTrickPlay) -> 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 DashIsoImageBasedTrickPlay
impl StructuralPartialEq for DashIsoImageBasedTrickPlay
Auto Trait Implementations§
impl Freeze for DashIsoImageBasedTrickPlay
impl RefUnwindSafe for DashIsoImageBasedTrickPlay
impl Send for DashIsoImageBasedTrickPlay
impl Sync for DashIsoImageBasedTrickPlay
impl Unpin for DashIsoImageBasedTrickPlay
impl UnwindSafe for DashIsoImageBasedTrickPlay
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