GitLab

Fixes use of uninitialized vaue in apply_to_row_y() with
clusterfuzz-testcase-minimized-dav1d_fuzzer_mt-5753369222709248. Credits
to oss-fuzz.

This fixes a potential overflow when setting num_ticks_per_picture if
dav1d_get_vlc() returns (1 << 32) - 1.

Missed in the previous commits.

Fixes #200.

ftello isn't available on MSVC.

On MinGW, both ftello and _ftelli64 are available. MinGW provides
the _ftelli64 even on msvcrt versions that don't actually have
such a function by providing a statically linked wrapper. But
since the ftello function also is available (also provided as
a similar wrapper), keep using that.

off_t isn't available in all environments.

On Ubuntu 16.04, GCC 5.4, glibc 2.23, off_t is defined by stdio.h
normally, but if building with -std=c99 (which dav1d does), it no
longer is defined. If fcntl.h is included additionally (which isn't
done in dav1d), it still gets defined though.

off_t isn't available in MSVC at all.

Fixes an assert in dav1d_prepare_intra_edges_16bpc() with
clusterfuzz-testcase-minimized-dav1d_fuzzer_mt-5640098964570112. Credits
to oss-fuzz.

Adaption of the avx2 code

Fixes NULL dereference with
clusterfuzz-testcase-minimized-dav1d_fuzzer_mt-5649526686220288. Credits
to oss-fuzz.

Fixes green lines in #197.

Fixes #196.

Fixes subsequent decoding errors after unrelated decoding errors or
flush/seek events.

Based on the implementation from tools/dav1d.c

Any benchmark that uses random data as input gives bunk results as it
 currently uses differently random data on each run.
This now makes any non-determinism in the tests repeatable across each
 call to check_cpu_flags() and checkasm_check_func().

Fixes use of uninitialized values in
clusterfuzz-testcase-minimized-dav1d_fuzzer_mt-5767052292259840. Credits
to oss-fuzz.

Fixes a NULL derefence with
clusterfuzz-testcase-minimized-dav1d_fuzzer-5724731362246656. Credits to
oss-fuzz.

Otherwise the library user will have to guess and find out the limit the hard way.

Should increase function coverage in oss-fuzz to 100%.

Signed-off-by: James Almer <jamrial@gmail.com>