[FFmpeg-devel] Exposing CrystalHD's hardware scaling?
michaelni at gmx.at
Sun Apr 17 00:06:06 CEST 2011
On Sat, Apr 16, 2011 at 08:31:03AM -0700, Philip Langdale wrote:
> Hi all,
> One of the CrystalHD's features is that it can scale frames before
> back over to system memory. While any modern system can accelerate
> using Xv or similar, letting the CrystalHD do it means that you don't
> to copy as many bytes, and sometimes this will make the difference
> playable and unplayable.
> So, my question is what's a way to expose this concept? You need to
> modify decoder state (setting the scaling flag and the desired size) but
> decoder option seems clunky - you'd much rather set the size the usual
> and then have it 'accelerated'. Is that practical? Could it be done
we have AVCodecContext.lowres that could be used, its not as fine
grained as one may want though, but easy
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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