On Thu, Nov 19, 2015 at 09:03:03AM -0500, Ganesh Ajjanagadde wrote:
> On Thu, Nov 19, 2015 at 8:17 AM, Michael Niedermayer <michae...@gmx.at> wrote:
> > From: Michael Niedermayer <mich...@niedermayer.cc>
> >
> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
> > ---
> > libavcodec/aacsbr.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
> > index d1e3a91..e014646 100644
> > --- a/libavcodec/aacsbr.c
> > +++ b/libavcodec/aacsbr.c
> > @@ -73,6 +73,7 @@ static void sbr_dequant(SpectralBandReplication *sbr, int
> > id_aac)
> > {
> > int k, e;
> > int ch;
> > + //TODO: Replace exp2f(0.5*x) by a LUT, the inputs are all integer and
> > have a small range
>
> Entirely possible I missed something, but exp2 gives 2^x, so if inputs
> are integers, can't one simply do the necessary bit shifts and cast
> implicitly to float?
> I think what you meant was all inputs are half-integers or integers.i meant all arguments to function f(x) are integers, f(x) = exp2(0.5*x) [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Let us carefully observe those good qualities wherein our enemies excel us and endeavor to excel them, by avoiding what is faulty, and imitating what is excellent in them. -- Plutarch
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