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## ObservedTime

# Struct ObservedTime

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    pub struct ObservedTime {
        position: f64,
        duration: Option<f64>,
    }

Expand description

The last playback time actually observed while media was loaded.

Some backends expose position and duration as live properties of the loaded file — MPV’s `time-pos` and `duration` stop resolving the moment it unloads the file at EOF. Reading them straight through means that at exactly the moment end-of-file handling wants to know where playback got to, the answer is `0.0` / unknown: the player appears to rewind to 0:00 as it ends.

The polling thread records here, and the accessors fall back to it, so an EOF reads as the last timestamp rather than as zero.

## Fields§

§ `position: f64` § `duration: Option<f64>`

## Implementations§

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### impl ObservedTime

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#### pub fn record(&mut self, position: f64, duration: f64)

Record a live reading. Non-positive durations are treated as unknown — that is how a backend reports “not established yet”, not a real zero.

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#### pub fn record_position(&mut self, position: f64)

Record a position alone, e.g. straight after a seek, before the next poll.

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#### pub fn reset(&mut self)

Forget everything — a different file is loading, and the previous one’s timestamp must not leak into it.

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#### pub fn position_or_last(&self, live: Option<f64>) -> f64

The live reading if there is one, else the last observed value.

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#### pub fn last_position(&self) -> f64

The last observed position, with no live reading to prefer — the case where the reporter is the only source there is (webview-rendered media, which the native backend cannot see at all).

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#### pub fn last_duration(&self) -> Option<f64>

The last observed duration, if one was ever established.

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#### pub fn duration_or_last(&self, live: Option<f64>) -> Option<f64>

The live reading if there is one, else the last observed value.

## Trait Implementations§

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### impl Clone for ObservedTime

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#### fn clone(&self) -> ObservedTime

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 Debug for ObservedTime

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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 Default for ObservedTime

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#### fn default() -> ObservedTime

Returns the “default value” for a type. Read more
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### impl Copy for ObservedTime

## Auto Trait Implementations§

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### impl Freeze for ObservedTime

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### impl RefUnwindSafe for ObservedTime

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### impl Send for ObservedTime

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### impl Sync for ObservedTime

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### impl Unpin for ObservedTime

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### impl UnsafeUnpin for ObservedTime

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### impl UnwindSafe for ObservedTime

## Blanket Implementations§

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Gets the `TypeId` of `self`. Read more
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🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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