On Sun, Sep 22, 2019 at 09:02:00AM +0000, Andreas Rheinhardt wrote:
> Michael Niedermayer:
> > This avoids some invalid shifts
> >
> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
> > ---
> > libavcodec/truespeech.c | 7 +++----
> > 1 file changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/libavcodec/truespeech.c b/libavcodec/truespeech.c
> > index d4ddfcbf9c..54352851b3 100644
> > --- a/libavcodec/truespeech.c
> > +++ b/libavcodec/truespeech.c
> > @@ -132,8 +132,7 @@ static void truespeech_correlate_filter(TSContext *dec)
> > if(i > 0){
> > memcpy(tmp, dec->cvector, i * sizeof(*tmp));
> > for(j = 0; j < i; j++)
> > - dec->cvector[j] = ((tmp[i - j - 1] * dec->vector[i]) +
> > - (dec->cvector[j] << 15) + 0x4000) >> 15;
> > + dec->cvector[j] += (tmp[i - j - 1] * dec->vector[i] +
> > 0x4000) >> 15;
> > }
> > dec->cvector[i] = (8 - dec->vector[i]) >> 3;
> > }
> > @@ -256,7 +255,7 @@ static void truespeech_synth(TSContext *dec, int16_t
> > *out, int quart)
> > int sum = 0;
> > for(k = 0; k < 8; k++)
> > sum += ptr0[k] * ptr1[k];
> > - sum = (sum + (out[i] << 12) + 0x800) >> 12;
> > + sum = out[i] + ((sum + 0x800) >> 12);
> > out[i] = av_clip(sum, -0x7FFE, 0x7FFE);
> > for(k = 7; k > 0; k--)
> > ptr0[k] = ptr0[k - 1];
> > @@ -274,7 +273,7 @@ static void truespeech_synth(TSContext *dec, int16_t
> > *out, int quart)
> > for(k = 7; k > 0; k--)
> > ptr0[k] = ptr0[k - 1];
> > ptr0[0] = out[i];
> > - out[i] = ((out[i] << 12) - sum) >> 12;
> > + out[i] += (- sum) >> 12;
> > }
> >
> > for(i = 0; i < 8; i++)
> >
> LGTM.will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB "Nothing to hide" only works if the folks in power share the values of you and everyone you know entirely and always will -- Tom Scott
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