[FFmpeg-devel] [PATCH 1/2] avfilter: Dry run mode for list merging

[Michael Niedermayer]

On Mon, Jul 22, 2013 at 12:16:10PM +0200, Nicolas George wrote:
> Le quartidi 4 thermidor, an CCXXI, Michael Niedermayer a écrit :
> >  AVFilterFormats *ff_merge_formats(AVFilterFormats *a, AVFilterFormats *b,
> > -                                  enum AVMediaType type)
> > +                                  enum AVMediaType type, int dry_run)
> >  {
> 
> Wouldn't it be simpler to have
> 
> ff_try_merge_formats(a, b, type);
> 
> that will allocate a copy of a and b with dummy back-references and pass it
> to ff_merge_formats?

implemented & pushed this way


> 
> For reference, the problem with the channel layouts is that the algorithm
> currently overwrites its inputs. It does so only when success is certain
> (exccept for OOM), but that will not do for dry-run.
> 
> Regards,
> 
> -- 
>   Nicolas George



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