[FFmpeg-devel] FFMpeg on SH4 (STi7109)
Wed Nov 26 19:09:08 CET 2008
O, it compiles and runs on the SH4 device.
I would like to "make test", but I don't know how to run it on the device.
Is there some tricky way ?
2008/11/21 M?ns Rullg?rd <mans at mansr.com>
> M?ns Rullg?rd wrote:
> > "Jean-Michel Hautbois" <jhautbois at gmail.com> writes:
> >> 2008/11/18 Vitor Sessak <vitor1001 at gmail.com>
> >>> Hi
> >>> Jean-Michel Hautbois wrote:
> >>>> It runs, on the CPU. Now, the big work will start !
> >>> Nice. Does "make test" pass?
> >> I don't know, I will try next week I think (and hope).
> >>> The "right" way is to make the optimizations in qpel.c compile and
> >>> Did you try something in the line of the attached patch (completely
> >>> untested, I do not have a cross-compiler installed)?
> >> I tried something like that, an it didn't solve everything.
> >> I will go really further, inclunding QPel optimizations, before
> >> submitting anything.
> > I have fixed the code so it builds out of the box now. It also works
> > to the extent qemu allows me to test it (qemu sh4 support is buggy).
> *Now* it should be working. I fixed a few more bugs, both in FFmpeg
> and qemu.
> > Could I ask you to run some simple benchmarks with and without the
> > functions from qpel.c and dsputil_align.c? I have the feeling those
> > optimisations are not all that optimal when all comes around. A
> > comment in qpel.c talks about *p++ vs. p[n] to access arrays, and most
> > functions in this file seem to be the plain C functions rewritten to
> > use *p++ access. There is, however, very little difference in the
> > generated code.
> I'd still like to see some benchmarks.
> M?ns Rullg?rd
> mans at mansr.com
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