[FFmpeg-devel] build failure on osx 10.5.8 ppc

Michael Niedermayer michaelni at gmx.at
Sun Oct 7 23:03:06 CEST 2012

On Sun, Oct 07, 2012 at 02:58:04PM -0600, Pavel Koshevoy wrote:
> On 10/7/12 2:22 PM, Michael Niedermayer wrote:
> >On Sun, Oct 07, 2012 at 01:55:17PM -0600, Pavel Koshevoy wrote:
> >>On 10/7/12 1:44 PM, Michael Niedermayer wrote:
> >>
> >><snip>
> >>>About how to solve this, can you benchmark your patch against simply
> >>>reverting this ?
> >>Is there some benchmarking facility for this, or can you recommend
> >>how I should do this?
> >START/STOP_TIMER but i do not know how well this works on ppc
> OK, but I also need something to exercise that code path.  It
> appears to be multi-channel audio related.  I have a sample file
> that should work (wmv 5.1 channels flt samples).  How can I see the
> timing results?  I am running this command:
> ./ffmpeg_g -i /nfs/scratch/DataSets/Video/multiChannelAudio/5.1\ ch\
> 48k\ Robotica.wmv -acodec flac /tmp/benchmark-unrolled.flac

they should be printed to the terminal.
to make sure that code executes at all try to put something like
a av_assert0(0) there or derefer a null ptr or something

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Awnsering whenever a program halts or runs forever is
On a turing machine, in general impossible (turings halting problem).
On any real computer, always possible as a real computer has a finite number
of states N, and will either halt in less than N cycles or never halt.
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