Struct PlaybackSource

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pub struct PlaybackSource {
    pub size: u64,
    pub mtime: u64,
    pub mtime_ns: Option<u32>,
}
Expand description

File evidence captured when selecting a resumable source.

This is a size/timestamp identity guard, not a checksum. No relocation is inferred: the accompanying track reference must still name the same path.

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§size: u64

Original encoded-file size in bytes.

§mtime: u64

Modification timestamp, whole Unix seconds.

§mtime_ns: Option<u32>

Nanosecond fraction, when the source/catalog supplies precise evidence.

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impl PlaybackSource

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pub fn from_catalog(catalog: &Catalog, file: &AudioFile) -> Self

Capture catalog evidence without reading or changing an audio file.

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pub fn from_metadata(metadata: &Metadata) -> Result<Self, StoreError>

Capture precise evidence from an already opened source descriptor.

Unavailable or pre-epoch timestamps are refused rather than turned into an ambiguous zero identity. The caller must open/validate the source.

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pub fn matches_catalog(&self, catalog: &Catalog, file: &AudioFile) -> bool

Whether the same current catalog row still carries matching evidence.

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pub fn matches_metadata(&self, metadata: &Metadata) -> bool

Recheck the already opened file before starting a resumed decode.

Trait Implementations§

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impl Clone for PlaybackSource

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fn clone(&self) -> PlaybackSource

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PlaybackSource

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for PlaybackSource

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fn eq(&self, other: &PlaybackSource) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for PlaybackSource

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impl StructuralPartialEq for PlaybackSource

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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<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<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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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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impl<F, T> IntoSample<T> for F
where T: FromSample<F>,

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fn into_sample(self) -> T

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

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

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> ToSample<U> for T
where U: FromSample<T>,

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fn to_sample_(self) -> U

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

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type Error = Infallible

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

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.
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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,