It can read less than the requested amount, in which case buf contains
uninitialized data, causing problems like segmentation faults later on.
Also make sure that image->size is positive, so that it can't match a
negative error code.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Fix cases where unknown data (data beyond p->buf_size) could produce a
higher ico probe score than if the unknown data was known and valid.
For example:
Header: OK, 2 frames
Frame 0: Unknown (offset points beyond end of probe buffer)
Frame 1: Invalid
Previously this example had a score of 25, even though the score would
be 1 if the unknown frame was known to be valid or 0 if it was known
to be invalid. For this example the score is now 1.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The ico probe function is pretty weak just checking a few bytes for being 0, 1 or not 0
Fixes probetest failure
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Andreas Cadhalpun
Mark Harris
Carl Eugen Hoyos
Michael Bradshaw
Michael Niedermayer
Paul B Mahol
Peter Ross