[Bug 744338] opusdec: LATENCY query handling looks wrong

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=744338

Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> changed:

           What    |Removed                     |Added
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                 CC|                            |vincent.penquerch at collabora
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--- Comment #1 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> ---
An Opus packet can contain up to 120 ms (in frames of up to 60 ms). So the
decoder may output 120 ms at once.
Similarly, the smallest possible packet is 2.5 ms.

In both those cases, this means the first sample may be 120 ms (resp. 2.5 ms)
late compared to the last sample.

I'm unsure how that should be accounted for here. This delay is dependent on
whatever the encoder produced, so it's not really due to the decoder, but the
decoder has to somehow let downstream know...

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