[FFmpeg-devel] [PATCH] lavu/eval: add ifelse function

Stefano Sabatini stefasab at gmail.com
Thu Jan 24 12:31:48 CET 2013


On date Wednesday 2013-01-23 03:23:51 +0100, Michael Niedermayer encoded:
> On Wed, Jan 23, 2013 at 12:58:15AM +0100, Stefano Sabatini wrote:
> > On date Tuesday 2013-01-22 20:39:21 -0300, James Almer encoded:
> > > On 22/01/13 8:03 PM, Stefano Sabatini wrote:
> > > > @@ -595,6 +597,9 @@ static int verify_expr(AVExpr *e)
> > > >          case e_taylor:
> > > >              return verify_expr(e->param[0]) && verify_expr(e->param[1])
> > > >                     && (!e->param[2] || verify_expr(e->param[2]));
> > > > +        case e_ifelse:
> > > > +            return verify_expr(e->param[0]) && verify_expr(e->param[1])
> > > > +                   && (!e->param[2] || verify_expr(e->param[2]));
> > > >          default: return verify_expr(e->param[0]) && verify_expr(e->param[1]) && !e->param[2];
> > > 
> > > case e_taylor:
> > > case e_ifelse:
> > >             return verify_expr(e->param[0]) && verify_expr(e->param[1])
> > >                    && (!e->param[2] || verify_expr(e->param[2]));
> > > 
> > > No need to put the same return line twice.
> > 
> > Up, simpler/handier.
> > -- 
> > FFmpeg = Frenzy Fanciful Martial Peaceless Evil Gargoyle
> 
> >  doc/eval.texi       |    8 ++++++++
> >  libavutil/eval.c    |   12 ++++++++++--
> >  tests/ref/fate/eval |   12 ++++++++++++
> >  3 files changed, 30 insertions(+), 2 deletions(-)
> > e8ce1d9d34cea8ef5677b6cca66def7f59216322  0002-lavu-eval-extend-if-ifnot-functions-to-accept-a-thir.patch
> > From 65ab662d77f56abc533d0de5db3acc1ee78196b3 Mon Sep 17 00:00:00 2001
> > From: Stefano Sabatini <stefasab at gmail.com>
> > Date: Wed, 23 Jan 2013 00:02:36 +0100
> > Subject: [PATCH] lavu/eval: extend if/ifnot functions to accept a third
> >  parameter
> > 
> > Add support to an if/else construct, simplify logic in expressions.
> > 
> > TODO: bump micro
> > ---
> >  doc/eval.texi       |    8 ++++++++
> >  libavutil/eval.c    |   12 ++++++++++--
> >  tests/ref/fate/eval |   12 ++++++++++++
> >  3 files changed, 30 insertions(+), 2 deletions(-)
> > 
> > diff --git a/doc/eval.texi b/doc/eval.texi
> > index 6c3eaef..54aeada 100644
> > --- a/doc/eval.texi
> > +++ b/doc/eval.texi
> > @@ -151,10 +151,18 @@ Return the greatest common divisor of @var{x} and @var{y}. If both @var{x} and
> >  Evaluate @var{x}, and if the result is non-zero return the result of
> >  the evaluation of @var{y}, return 0 otherwise.
> >  
> 
> > + at item if(x, y, z)
> [...]
> > + at item if(x, y, z)
> 
> typo
> 
> otherwise should be ok if it works

Applied, thanks.
-- 
FFmpeg = Frenzy and Fascinating Mean Proud Erratic Game


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