ES filtering?

Hi all,
my name is Angelo, from Italy, and first of all i'd like to thank you
so much about your
very valuable work.

I've spotted xine just some days ago' and I'm planning to use it in a
very easy prototype
(just to start to getting familiar with it :) ). I've read the
hackersguide online but some doubts
are still here in mind...

Going directly to the point, about BufferType and communication
between demux and codec:
I need to create an ad hoc media chain where i apply a blackbox/filter
after demux and before/after
decoder in a rendering chain. I need to put this blackbox also in a
media production chain, again
after demux and after/before decoder.

DEMUX, blackbox, DECODER, RENDERER
DEMUX, DECODER, blackbox, RENDERER

DEMUX, blackbox, MUX
DEMUX, DECODER, blackbox, ENCODER, MUX

I've seen that video/audio filter can be applied AFTER decoding
process (post processing), and i'm wondering if i can
apply this blackbox BEFORE decoding, without caring the format of the
data sent by demux to
decoder... but it seems that the buffer data in the video-audio buffer
are typed. I know that xine is not a framework at all, but maybe
your architecture permits it (the Engine architecture and data flow
picture show the audio/video buffer fifo... can i build
a blackbox on it?)

Really thanks about your attention,
Best regards,
Angelo

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