[MPlayer-dev-eng] [PATCH] EOSD/ASS code factorization

[Nicolas George]

Hi.

The attached patch factors some code that was duplicated between vf_ass and
vf_vo.

Notes:

- The diffstat shows +54 overall, which as factorizations go is rather
  lousy. But most of them are caused by my choice to create a new source
  file and a new header file: huge license blob, double-inclusion guards,
  #includes, etc. I counted that the balance for actual lines of code is
  -47+38 = -9.

- Tested with vo_gl but not with vo_vdpau; since the changes are in the
  common upstream of both, there is no reason for it to break.

- A cosmetic patch to wrap long lines kept from the original code may
  follow if deemed necessary.

- Apart from slightly simplifying the current code, these changes should
  make it much easier to add new overlay sources in the future.

Regards,

-- 
  Nicolas George
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