hschlueter d8b9d378d9 Accumulate remainder in buffer duration calculations.
When dropping the remainder, the decoder and encoder timestamps start diverging after a few buffers when no speed changes are supposed to occur. Tracking the remainder keeps them in sync.

PiperOrigin-RevId: 408341074
2021-11-19 14:22:24 +00:00
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2021-10-27 09:12:46 +01:00