Am 01.03.2017 um 11:58 schrieb Timo Rothenpieler:
We recently just had all sorts of discussions what decoders should and
should not do, I don't think scaling in a decoder is a good thing to
start doing here.
scaling in some decoders is mandated by some specs
some standards support reduced resolution which can switch from frame
to frame without the decoder output changing
There is also the possiblity of scalability where the reference stream
has lower resolution IIRC.
This is kind of different of course but, scaling code in decoders is
part of some specifications.
Would like to bring this back up.
I'd like to merge this, as specially the scaling is freely done by the
video asic, offering a possibility to scale without requiring non-free
libnpp. And cropping so far is not possible at all.
Yes, scaling and cropping is not something a decoder usually does, but
it exposes a hardware feature that has no other way of accessing it,
which offers valuable functionality to users.
With the lazy filter init now merged, this patch can be simplified.
Rewrote most of it, currently on github:
https://github.com/BtbN/FFmpeg/commit/f856fa509278392a88c754b8c7755a575e5aeb41
I'm still doing some testing with it, but intend to push it if no issues
are found.
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
