avcodec_find_best_pix_fmt2 has been deprecated and replaced by
avcodec_find_best_pix_fmt_of_2 in 2a54ae9d.
avcodec_find_best_pix_fmt_of_2 and avcodec_get_pix_fmt_loss meanwhile
were deprecated in 617e866e when these
functions were de facto moved to libavutil; this has been mentioned in
APIchanges in f7a1c5e4. Yet the
attribute_deprecated was never set for the latter two functions and they
were not wrapped in an FF_API define. This commit does this.
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>