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VideoCacheWriter

Struct VideoCacheWriter 

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pub struct VideoCacheWriter { /* private fields */ }
Expand description

Update handle for video files.

  • Generates poster thumbnails with ffmpeg (frame at 5 s, falling back to 0 s).
  • Clone only bumps Arc counters.

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impl VideoCacheWriter

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pub fn as_session(config: VideoCacheConfig) -> Result<Self>

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pub fn onetime( location: DbLocation, thumbnail_dir: Option<PathBuf>, ffmpeg_path: Option<PathBuf>, ) -> Result<Self>

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pub fn upsert(&self, req: UpsertVideoRequest) -> Result<()>

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pub fn upsert_all( &self, reqs: Vec<UpsertVideoRequest>, ) -> Vec<(PathBuf, Result<()>)>

Batch variant of upsert. Returns (PathBuf, Result<()>) per request. Freshness checks and thumbnail extraction run in parallel; writes are serialized; fresh nothing-new entries are skipped without a write. Individual errors are stored per element; other requests continue.

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pub fn delete(&self, path: &Path) -> Result<bool>

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pub fn delete_in_dir(&self, dir: &Path) -> Result<usize>

Remove every cached entry whose file lives directly in dir, deleting the associated thumbnail file (when recorded) as well. Non-recursive. Returns the number of entries removed (RFC 004).

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pub fn list_paths(&self) -> Result<Vec<String>>

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pub fn as_reader(&self) -> VideoCacheReader

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pub fn lookup(&self, path: &Path) -> Result<LookupResult<VideoCacheEntry>>

Trait Implementations§

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impl Clone for VideoCacheWriter

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts 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 more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts 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
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impl<T> Pointable for T

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const ALIGN: usize

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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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fn clone_into(&self, target: &mut T)

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impl<T, U> TryFrom<U> for T
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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.