It is not needed at all.

Signed-off-by: NLimin Wang <lance.lmwang@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

enable runtime change flag
Signed-off-by: NJun Zhao <barryjzhao@tencent.com>

Signed-off-by: NTing Fu <ting.fu@intel.com>
Signed-off-by: NRuiling Song <ruiling.song@intel.com>

Signed-off-by: NPaul B Mahol <onemda@gmail.com>

Reviewed-by: Nwm4 <nfxjfg@googlemail.com>
Signed-off-by: NMuhammad Faiz <mfcc64@gmail.com>

AVFilterLink.frame_count is supposed to count the number of frames
that were passed on the link, but with min_samples, that number is
not always the same for the source and destination filters.
With the addition of a FIFO on the link, the difference will become
more significant.

Split the variable in two: frame_count_in counts the number of
frames that entered the link, frame_count_out counts the number
of frames that were sent to the destination filter.

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Libav, for some reason, merged this as a public API function. This will
aid in future merges.

A define is left for backwards compat, just in case some person
used it, since it is in a public header.
Signed-off-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes "-vf eq=0.05,eq=20"
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

In particular, add support for t, pos, n, r parameters, and add an eval
mode option.

Also, partially reword option documentation.

With several major edit by Stefano Sabatini.
Signed-off-by: NStefano Sabatini <stefasab@gmail.com>

Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Found-by: NChristophe Gisquet <christophe.gisquet@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Signed-off-by: NPaul B Mahol <onemda@gmail.com>

Code adapted from James Darnley's port
Some fixes from Paul B Mahol <onemda@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>