lavfi/boxblur: add support to named options
doc/filters: apply minor spacing fixes to boxblur docs
exr: check version too

Separate version from flags.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: merge multiple if () blocks

Remove useless comments.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: fix overflow check in lineoffset processing

Also read data size for raw compressions too and
make sure its value is sane.

Remove code that fills missing blocks with zeroes.
It is marginally useful and make implementation
of actually useful features harder.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: support more line orders

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: check if line offset table is complete only once per frame

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: remove superfluous check

get_header_variable_length() already check for
out of array read and returns 0 in such case.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
exr: shorter channel buffer names

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avutil/mem: do a small set of checks for memalign hack before freeing.

These can detect some kinds of memory and or pointer corruptions

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