On Sun, 20 Nov 2016 14:24:00 +0100
Carl Eugen Hoyos <ceffm...@gmail.com> wrote:
> 2016-11-20 13:52 GMT+01:00 Clément Bœsch <u...@pkh.me>:
>
> >> > +static const AVOption sbuffer_options[] = {
> >> > + { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL,
> >> > { .dbl = 0 }, 0, INT_MAX, S },
> >> > + { "format", NULL, OFFSET(sub_format), AV_OPT_TYPE_INT,
> >> > { .i64 = -1 }, -1, 1, S, "format" },
> >> > + { "unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64=-1},
> >> > INT_MIN, INT_MAX, S, "format" },
> >> > + { "bitmap", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0},
> >> > INT_MIN, INT_MAX, S, "format" },
> >> > + { "text", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1},
> >> > INT_MIN, INT_MAX, S, "format" },
> >>
> >> Implies no mixed subs. I'm fine with that, but might be restrictive.
> >>
> >
> > Yeah, so far we don't have such things AFAIK. But we could replace this
> > with a mask later on. It was simpler for the initial format negotiation
> > that way.
>
> Will this work with our current external teletext decoder?
> (Will it work with a hypothetical future teletext decoder that provides both
> bitmap and text when decoding?)
That's a different case. I was talking about subtitles with need both
text and images for correct display. Different output formats can be
handled with get_format or a private option or so.
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