[FFmpeg-devel] [PATCH] Port MPlayer 2xSaI filter to libavfilter

[Nielkie]

On Mon, Nov 29, 2010 at 5:08 PM, Nielkie <nielkie at gmail.com> wrote:

> On Mon, Nov 29, 2010 at 12:13 AM, Ronald S. Bultje <rsbultje at gmail.com>wrote:
>
>> Hi,
>>
>> On Sun, Nov 28, 2010 at 2:54 AM, Nielkie <nielkie at gmail.com> wrote:
>> > On Sat, Nov 27, 2010 at 8:29 PM, Reimar D?ffinger
>> > <Reimar.Doeffinger at gmx.de>wrote:
>> >> On Sat, Nov 27, 2010 at 07:52:52PM +1000, Nielkie wrote:
>> >> > +            /* Move color matrix forward */
>> >> > +            for (my = 0; my < 4; my++) {
>> >> > +                color[my][0] = color[my][1];
>> >> > +                color[my][1] = color[my][2];
>> >> > +                color[my][2] = color[my][3];
>> >> > +            }
>> >>
>> >> Using a loop here seems likely to have a major negative impact on
>> >> performance.
>> >
>> > I'm not sure, I would think the compiler would unroll it.
>>
>> Could you verify that please?
>>
>> Ronald
>>
>>
> I can confirm that it is unrolled on gcc 4.2.1, at least.
>

Updated patch to svn.
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