Quoting Diego Biurrun (2016-06-23 17:05:23)
> On Thu, Jun 23, 2016 at 10:52:46AM -0400, Vittorio Giovara wrote:
> > On Thu, Jun 23, 2016 at 8:46 AM, Diego Biurrun <[email protected]> wrote:
> > > ---
> > >
> > > This does not seem worth the ifdef soup to me.
> > >
> > >  libavcodec/msmpeg4dec.c | 25 -------------------------
> > >  1 file changed, 25 deletions(-)
> > >
> > > --- a/libavcodec/msmpeg4dec.c
> > > +++ b/libavcodec/msmpeg4dec.c
> > > @@ -778,23 +765,11 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, 
> > > int16_t * block,
> > >                  level = level + rl->max_level[run>>7][(run-1)&63] * 
> > > qmul;//FIXME opt indexing
> > >                  level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - 
> > > SHOW_SBITS(re, &s->gb, 1);
> > >                  LAST_SKIP_BITS(re, &s->gb, 1);
> > > -#ifdef ERROR_DETAILS
> > > -                if(run==66)
> > > -                    av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in 
> > > ESC1 level=%d\n", level);
> > > -                else if((i>62 && i<192) || i>192+63)
> > > -                    av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC1 
> > > i=%d run=%d level=%d\n", i, run, level);
> > > -#endif
> > >              }
> > >          } else {
> > >              i+= run;
> > >              level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, 
> > > &s->gb, 1);
> > >              LAST_SKIP_BITS(re, &s->gb, 1);
> > > -#ifdef ERROR_DETAILS
> > > -                if(run==66)
> > > -                    av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code 
> > > level=%d\n", level);
> > > -                else if((i>62 && i<192) || i>192+63)
> > > -                    av_log(s->avctx, AV_LOG_ERROR, "run overflow i=%d 
> > > run=%d level=%d\n", i, run, level);
> > > -#endif
> > >          }
> > >          if (i > 62){
> > >              i-= 192;
> > 
> > how about replacing the #ifdefs with avctx->debug checks
> 
> I don't think I can be bothered to be honest.

More importantly, that could mean a significant performance impact.
Which is probably why this was ifdefed out in the first place.

-- 
Anton Khirnov
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