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

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>

Fixes #48.

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 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.

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

Also remove some redundant clips in DC pred.

Fixes a fuzzing crash in crash-5f55445c56a36f28259bc742dd08b2c5ba42045d.

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>

Janne Grunau authored Oct 03, 2018 and Jean-Baptiste Kempf committed Oct 03, 2018

Fixes frame ref leak with crash-5f55445c56a36f28259bc742dd08b2c5ba42045d.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes crash when playing crew_720p_10f_q16_coltile4.ivf.

Also a fix in our palette cache debugging. Fixes frame 2640 in #17.

Related to issue #17 and #20.

With minor contributions from:
 - Jean-Baptiste Kempf <jb@videolan.org>
 - Marvin Scholz <epirat07@gmail.com>
 - Hugo Beauzée-Luyssen <hugo@videolan.org>