On Thu, Dec 9, 2010 at 9:51 AM, Sergey Kvachonok <ravenexp@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 script'?
> 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):
http://www.amebasystems.com/downloads/hardware/datasheets/ben-nanonote/Ingenic-SOC-JZ4720/SOC-U1-Jz4720_ds.pdf

The Jz4720 have Xburst SIMD instruction set to support multimedia acceleration.

Sadly, those instructions are not documented but the mplayer modified by Ingenic  works very well (thanks to HW SIMD acceleration).

Regards,

    Andrés Calderón
    Cel:     +57 (300) 275 3666
    Email: andres.calderon@emqbit.com
    Gtalk:  andresfcalderon@gmail.com
    Web:    www.emqbit.com

 
Regards,
Sergey

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