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avfilter/vf_mpdecimate: debug logging of threshold stats 

It's often really helpful to know why a frame wasn't decimated (lo or
hi), and how much you exceeded the threshold by, if you're trying to
tweak the thresholds to get what you want.

mpdecimate already prints a line per input frame with -v debug, this
just makes it longer.

Signed-off-by: Peter Cordes <peter@cordes.ca>
This commit is contained in:
Peter Cordes 2015-03-02 22:57:30 -04:00 committed by Michael Niedermayer
parent fb1be6303d
commit 50f112c915
1 changed files with 8 additions and 2 deletions
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10
libavfilter/vf_mpdecimate.c
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@ -84,15 +84,21 @@ static int diff_planes(AVFilterContext *ctx,
for (x = 8; x < w-7; x += 4) {
d = decimate->sad(cur + y*cur_linesize + x, cur_linesize,
ref + y*ref_linesize + x, ref_linesize);
if (d > decimate->hi)
if (d > decimate->hi) {
av_log(ctx, AV_LOG_DEBUG, "%d>=hi ", d);
return 1;
}
if (d > decimate->lo) {
c++;
if (c > t)
if (c > t) {
av_log(ctx, AV_LOG_DEBUG, "lo:%d>=%d ", c, t);
return 1;
}
}
}
}
av_log(ctx, AV_LOG_DEBUG, "lo:%d<%d ", c, t);
return 0;
}