[MPlayer-dev-eng] [PATCH] cleanup handling of vobsub extradata

[Aurelien Jacobs]

Hi,

Currently, handling of vobsub track extradata is duplicated and spread at
various levels inside MPlayer. The attached patch is a big cleanup of it.
It mostly factorize what can be factorized, resulting in a significant
code size drop.
It shouldn't generate any functional changes, but my vobsub collection
is not that huge, so I would be glad if someone could check it with other
samples.

Oh, and I almost forgot to mention that it has the side-effect of decoding
extradata coming from lavf for free.

Aurel
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