[MPlayer-dev-eng] [PATCH][BUGFIX] Overlapping subs, ver. 3.5

[salvatore.falco at katamail.com]

Hello.
Here are two patches.

    Since the first overlapping sub patch there were many
 complaints about this code and its 'jumping' effect. This was
 partially solved with version 2, but at last I got my hands on
 some subtitles that behaved ugly with this code. So here is the
 third version of this feature, which may be considered both a
 'new' feature and a bugfix.
    Overlapping subs are a feature mainly present in subtitling
 software formats, such as JACOsub and SSA. This patch enables
 them, by default, only with this formats; however the user can
 force both enabling and disabling overlapping subtitles by the
 mean of -overlapsub and -nooverlapsub options. The code itself
 should avoid all the 'jumping subtitles' problems reported by the
 users.
 
    The second patch is about some changes that aren't a bugfix.
    Currently the subtitles sorting code can be disabled at
 configure time. IMHO this is not good, since this is a feature
 that doesn't any harm and is required both by 'overlapping
 subtitles' and by 'logarithmic search' in find_sub.c.
    Since version 2.7 the file extension for JACOsub changed from 
 '.js' to '.jss', to avoid confusion with javascript.
    There is also a new format for list_sub_file output; however
 this is used only in debugging subtitles code, while disabled in
 real life use.
 
    Best regards, Salvatore Falco


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