ffmpeg: ignore EOF when pushing frames to filters.

EOF is not a fatal condition, it is normally produced
by a few filters.

TODO: take it into account to avoid useless decoding.
lavfi/trim: mark link closed on EOF.

Fix trac ticket #2620.
tta: move GetBitContext out of private context

Signed-off-by: Paul B Mahol <onemda@gmail.com>
tta: use interger instead of pointer to iterate output samples for 24-bit case

Signed-off-by: Paul B Mahol <onemda@gmail.com>
wavpack: remove redundant error log message

Signed-off-by: Paul B Mahol <onemda@gmail.com>
jpeg2000dec: remove redundant error log message

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Merge remote-tracking branch 'cigaes/master'

* cigaes/master:
  lavfi/trim: mark link closed on EOF.
  ffmpeg: ignore EOF when pushing frames to filters.

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