3d power of Ben?
andres.calderon at emqbit.com
Thu Dec 9 10:21:37 EST 2010
On Thu, Dec 9, 2010 at 9:51 AM, Sergey Kvachonok <ravenexp at gmail.com> wrote:
> > I even did not look at those MXU instructions in those sources, do they
> can very
> > well be blobs. So that mplayer uses or does not use that famous 'awk
> > Or the 'awk script' is only made to properly parse the blobs?
> MXU in the sources is fine, it is documented somewhat and can be built
> using their tools.
> I've checked the mplayer sources again, there actually are sources for
> h264, xvid and vc1 plugins.
> Those live in jzcodecs dir while precompiled .so files are in jzsoc
> dir. Apparently compiled binaries are provided to make it buildable
> with standard toolchain without this awk script. I've misunderstood
> this placement, sorry about that.
> On the other hand these codecs seem to be jz4750+ only, because they
> make use of some acceleration hardware not present on jz4740 at all...
The NN use the Jz4720, see de DataSheet (Sec. 1.2.1 CPU core, pag 8):
The Jz4720 have Xburst SIMD instruction set to support multimedia
Sadly, those instructions are not documented but the mplayer modified by
Ingenic works very well (thanks to HW SIMD acceleration).
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