mov: Fix negative size calculation in mov_read_default().
authorDale Curtis <dalecurtis@chromium.org>
Tue, 6 Jan 2015 00:34:17 +0000 (16:34 -0800)
committerMichael Niedermayer <michaelni@gmx.at>
Tue, 6 Jan 2015 04:23:45 +0000 (05:23 +0100)
commit3ebd76a9c57558e284e94da367dd23b435e6a6d0
tree9cca60ba4ccd4216da81c501e854635823962e96
parent3859868c75313e318ebc5d0d33baada62d45dd75
mov: Fix negative size calculation in mov_read_default().

The previous code assumed if an atom was marked with a 64-bit
size extension, it actually had that data available. The new
code verfies there's enough data in the atom for this to be
done.

Failure to verify causes total_size > atom.size which will
result in negative size calculations later on.

Found-by: Paul Mehta <paul@paulmehta.com>
Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/mov.c