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firestar5683
fd4ca85d61
Provide alert playback and volume control with a native audio callback that does not depend on the Python GIL. Co-authored-by: Daniel Koepping <elkoled@gmail.com>
22 lines
997 B
Python
22 lines
997 B
Python
"""Bounded delivery of an already selected availability chime, independent of authority."""
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MAX_DELIVERY_NS = 400_000_000
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class AvailabilityWarningDelivery:
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def __init__(self):
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self.context = None
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self.until_ns = 0
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self.last_ns = 0
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def observe(self, *, session, drive, now_ns, selected, requested_until_ns):
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context = (session, drive) if session and drive > 0 else None
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if context != self.context or now_ns < self.last_ns or context is None:
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self.until_ns = 0
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self.context, self.last_ns = context, now_ns
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if context is not None and selected and now_ns <= requested_until_ns:
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self.until_ns = max(self.until_ns, min(requested_until_ns, now_ns + MAX_DELIVERY_NS))
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def pending(self, *, session, drive, now_ns, audible_none, priority, low_priority):
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return (self.context is not None and self.context == (session, drive) and drive > 0 and
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self.last_ns <= now_ns <= self.until_ns and
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audible_none and priority <= low_priority)
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