[opus] Question about libopusfile downloading the last 64K when duration is not needed
Timothy B. Terriberry
tterribe at xiph.org
Thu Nov 15 07:16:39 UTC 2018
Ian Reed wrote:
> It explains why libopusfile requires the last 64K to calculate the
> duration, but again, I don't need libopusfile to get the duration for
> me, I only want it to allow me to seek within parts of the file that
> have already been downloaded.
Unfortunately, this is not currently supported.
> Is there a reason libopusfile forces the retrieval of the last 64K of
> the file when seeking is enabled, but without ever being asked for the
It makes the code substantially simpler to be able to enumerate the
tracks, chain boundaries, etc., of the file once in advance. All of the
seeking code assumes this enumeration has been done. It might be
possible to remove this limitation and still enable some functionality
that is not available for an unseekable stream, but I have not tried,
and I expect it would be a lot of work.
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