On Thu, Jun 25, 2015 at 06:03:14PM +0000, Paul B Mahol wrote: > On 6/25/15, Michael Niedermayer <michae...@gmx.at> wrote: > > On Wed, Jun 24, 2015 at 05:49:35PM +0000, Paul B Mahol wrote: > >> Signed-off-by: Paul B Mahol <one...@gmail.com> > >> --- > >> Example: > >> > >> ffplay movie.webm -vf > >> signalstats,drawgraph=lavfi.signalstats.YAVG:min=0:max=255:mode=0 > >> > >> --- > >> libavfilter/Makefile | 1 + > >> libavfilter/allfilters.c | 1 + > >> libavfilter/vf_drawgraph.c | 186 > >> +++++++++++++++++++++++++++++++++++++++++++++ > >> 3 files changed, 188 insertions(+) > >> create mode 100644 libavfilter/vf_drawgraph.c > > > > nice, i like this filter! > > > > > > [...] > >> + metadata = av_frame_get_metadata(in); > >> + e = av_dict_get(metadata, s->key, NULL, 0); > > > > this could be extended to also support AVOptions > > aka av_get_double(in, s->key...) > > Hmm, this doesn't work.
right, this is slightly more complex, maybe we should add a
av_get_double2/int2 that takes a class argument
but something like this should work:
class = avcodec_get_frame_class();
ptr = av_opt_ptr(class, in, s->key);
o = av_opt_find(&class, s->key, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ);
switch (o->type) {
...
}
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
What does censorship reveal? It reveals fear. -- Julian Assange
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