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

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.

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

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

In the start_frame() debug log, print the reference pos value rather than the evaluated value converted to int.

That's required because -1 is evaluated as NAN, which converted back
to int looks like a random number, this is especially annoying when
debugging sources with undefined pos (as the video4linux2 device).
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

eval API.

More grep-friendly and more consistent with the rest of the FFmpeg
API.

Originally committed as revision 25708 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25655 to svn://svn.ffmpeg.org/ffmpeg/trunk