[FFmpeg-devel] [RFC] ac3dec: use dsputil.clear_block

Reimar Döffinger Reimar.Doeffinger
Wed Jan 13 23:50:36 CET 2010

On Wed, Jan 13, 2010 at 11:42:27PM +0100, Michael Niedermayer wrote:
> On Wed, Jan 13, 2010 at 09:46:17PM +0100, Reimar D?ffinger wrote:
> > Hello,
> > this gives an overall speedup of about 1.1 % on Intel Atom with my sample.
> > Testing with other CPUs and samples heavily welcome, I suspect a slowdown may 
> > be possible, beside it being a bit ugly.
> what happens with these coeffs afterwards?
> is it
> s->dsp.int32_to_float_fmul_scalar(s->transform_coeffs[ch], s->fixed_coeffs[ch], gain, 256);
> ?
> if so maybe that could be changed to not touch the supposed to be zero
> coeffs?

I had that idea as well, but I have to admit I do not know, nor if I will have the time
to understand the code well enough to know :-)

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