Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad 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.

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: Derek Buitenhuis <derek.buitenhuis@gmail.com>

(cherry picked from ffmpeg commit fdb9399681)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Depending on FPS, the pts_time string often changes length:
... pts_time:36.1 ...
... pts_time:36.1333 ...
etc.

 The length changes make the output bounce around horribly, making it
hard to scan down a column farther right than pts_time.

The solution is to set minimum widths for n, pts, pts_time, and pos.
This patch doesn't touch any of the fields in mean / stddev.

 The widths aren't intended to be wide enough that they're never
exceeded, but you'll see only an occasional ripple to a new alignment,
rather than bouncing.  (Some fields, like pos, increase monotonically,
which is why I left the minimum width for the field be smaller than it
often gets to.)

Signed-off-by: Peter Cordes <peter@cordes.ca>

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

CC: libav-stable@libav.org
Bug-Id: CID 1087086

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

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Fixes Ticket3013

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

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

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

Fixes out of array accesses

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

This should fix several issues with odd dimensions inputs.

lut, vflip, pad and crop video filters also need to be checked for such
issues. It's possible sws is also affected.

Filter private data is memset to 0 so there is no point in explicitly
initing anything to 0.

Deprecate AVFilterBuffer/AVFilterBufferRef and everything related to it
and use AVFrame instead.

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

Any alleged performance benefits gained from the split are purely
mythological and do not justify added code complexity.

Fixes CID703716
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

A number of compilers, for example those from TI and IBM, choke on
these initialisers.  The current style is also quite ugly.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Martin Storsjö <martin@martin.st>

Semantic for the function ff_null_start_frame() was changed in
07bad27810cd, and it has now the same behavior of
ff_null_start_frame_keep_ref(), thus it makes no sense to keep both of
them.

It is not used in any filters currently and is inherently evil. If
passing binary data to filters is required in the future, it should be
done with some AVOptions-based system.

It will allow adding new fields to it without ABI breaks.

They are only useful inside filters and we don't allow user filters for
now.

Those functions are only useful inside filters. It is better to not
support user filters until the API is more stable.

Also add internal function ff_null_start_frame_keep_ref().

Fix crash when a following filter (e.g. settb) will unref the reference
passed by start_frame(), and then the reference is accessed in
end_frame() through inlink->cur_buf.

Make the output a bit nicer.

GCC 4.6.2 at least still seems to fail to put them in .rodata though,
see also http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37303

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Indeed the Adler-32 checksum, which is computed by showinfo, is not
cyclic, so using the term "CRC" is wrong/confusing.

Previously the code was computing the checksum only for the first line
of each plane.

Improve consistency with libavcodec.

This breaks libavfilter API/ABI.

The non-sequential 2.1.0 -> 2.4.0 bump is due to the mess previously
done with the lavfi minor number.