T.140 support will be included in the next release of live555

Please improve

Modified the way DDS (display definition segment - HD res dvb subs) is handled and added comments/explanation.

Applied by jb

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

For some reason, the aea probe needs to be > 2048 + 212. I would thought that >= would be enough, but it doesn't seem so.
I hope it won't increase too much in the future.

audio filter plugins are now useless.
This breaks visual (needs to be ported to filter_t) and will likely
expose bugs in under-used audio filter2 infrastructure.

TODO: use filter chain instead of custom filter handling in core.

Big filter changes, and worse, moved audio_format plugin.

Signed-off-by: Rafaël Carré <rafael.carre@gmail.com>

This migrates to a filter_t-like syntax

Open fails if p_sys is NULL.

For lack of vout display currently doing it (obviously ;), it is
untested.

It is needed to avoid problems with threaded event.