Fixes segfaults with
david-fuzzing-data:artifacts/crash-b9015ad03b63131c25016592c3535da1268a08ad.

Fixes an input validation error due to not cleared reference frame refs
in Dav1dFrameContext with
dav1d-fuzzing-data:artifacts/crash-b9015ad03b63131c25016592c3535da1268a08ad.

Fixess heap overflow with
clusterfuzz-testcase-minimized-dav1d_fuzzer-5720347626700800
Credit to OSS-Fuzz

Fixes a null pointer dereference with
clusterfuzz-testcase-minimized-dav1d_fuzzer-5670100066107392.
Credit to OSS-Fuzz

Seen with clusterfuzz-testcase-minimized-dav1d_fuzzer-5749222154960896,
Credit to OSS-Fuzz.

This resolves a mismatch for libaom test vectors:
av1-1-b8-01-size-$SIZE.ivf
Where SIZE is in:
 18x64  196x196 196x198 196x200 196x202 196x210 196x224 196x226 202x196
202x198 202x200 202x208 202x210 202x224 202x226 210x196 210x198 210x200
210x202 210x208 210x210 210x224 210x226 226x196 226x198 226x200 226x202
226x210 226x224 226x226  66x18   66x32
Helped-by: Ronald S. Bultje <rsbultje@gmail.com>

Loop inside SIMD (instead of in the caller) so that we can handle
multiple 4px blocks per iteration, allowing for more efficient
SIMD. To make this easier, also transpose the masks for the hor
filter.

- remove edge condition in maxifzero(), since it's always true;
- make subsampled level array packed;
- handle a SB worth of 4px blocks per DSP function call, so that
  SIMD will be more efficient.

Fixes #48.

Should fix hang in #23.

Should fix CDF-related warnings in #41.

Otherwise a pathological condition can start the next frame while some
related variables are still being read. Fixes #43.

Fixes #42.

Input coefficients for transforms of sizes 16x32/32x16 and above were
larger than they should be, which in rare cases could cause tests to
incorrectly fail.

Fixes a overlapping memcpy for
dav1d-fuzzing-data:artifacts/crash-9550bf1d4b851a3a930394df4e2970d4eb50f47e.

Fixes heap overflow with
david-fuzzing-data:artifacts/crash-5c3b00780bb24ac2e123c3f172b1e4829bc98aa5.

Fixes crash with david-fuzzing-data:artifacts/crash-dcd73345cdbeabf76d8f59aa0c2b6362bfa006c1
and an out_cdf reference leak with
leak-fc8c16a84995320881aba1eb5aff19b3acf31fca (sample lost).

Fixes a picture reference leak with leak-fc8c16a84995320881aba1eb5aff19b3acf31fca.

Avoids a triggered assert with
david-fuzzing-data:artifacts/crash-f448caf378e250b7eea4fa2d1c3cd7ef4a3211ce.

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

Fixes parsing of some error_resilient_mode files.

Henrik Gramner authored Oct 05, 2018 and Jean-Baptiste Kempf committed Oct 05, 2018

Also remove some redundant clips in DC pred.

Janne Grunau authored Oct 04, 2018 and Henrik Gramner committed Oct 05, 2018

Makes building under oss-fuzz easier.

skal authored Oct 02, 2018 and Ronald S. Bultje committed Oct 05, 2018

"comparison between signed and unsigned integer expressions"

Janne Grunau authored Oct 04, 2018 and Henrik Gramner committed Oct 04, 2018

The x86 asm requires nasm and an error from meson is easier to
understand than cryptic errors from nasm.

Fixes a fuzzing crash in crash-5f55445c56a36f28259bc742dd08b2c5ba42045d.

Replaces an assert with a check and return error. Fixes an assert fail
with crash-ea35702b18cd8c17da7505126eb0e6aa6914f09d.

This resolves a mismatch for libaom test vectors:
* av1-1-b8-00-quantizer-00.ivf
* av1-1-b10-00-quantizer-00.ivf
Helped-by: Ronald S. Bultje <rsbultje@gmail.com>