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

Michael Niedermayer michaelni
Wed Jan 13 23:42:27 CET 2010

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


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Into a blind darkness they enter who follow after the Ignorance,
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to the Knowledge alone. -- Isha Upanishad
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