* Add new fuzz target for encoding and misc
- Add fuzz_webp_enc_dec and adapt Dockerfile, build.sh
- Lint existing targets
- Add license headers
- Increase fuzz.dict
* webp_enc_dec: Convert input images to inline C arrays
Local files are not available on oss-fuzz servers.
* webp_enc_dec: Fix timeout by skipping crusher
The target fuzz_webp_enc_dec with msan crashes (timeout)
on a 128*128px image encoding with max compression (crusher).
Reduce crusher encoding to 16*16px and below.
Bug report 10423
* webp_enc_dec: Replace cruncher by lossy alpha encoding
The target fuzz_webp_enc_dec with msan crashes (timeout)
during encoding with max compression (cruncher).
Reduce alpha cruncher encoding to 16*16px and below.
Bug report 10634
* webp_enc_dec: Clamp slow parameters for big images
The target fuzz_webp_enc_dec with ubsan crashes (timeout)
during encoding with heavy compression. The cause can not
be easily removed without reducing performance.
Clamp compression parameters for images bigger than 16*16.
Bug report 10700
* webp_enc_dec: Limit alpha_quality to 99 when method is 6
The target fuzz_webp_enc_dec with asan crashes (timeout)
during encoding with heavy alpha compression.
Clamp alpha compression parameters for images bigger than 16*16.
Bug report 10838
* webp_animencoder: Add target to fuzz animation encoding
Add fuzz_webp_animencoder.cc and modify Dockerfile, build.sh
accordingly.
The thresholds for input size and encoding parameters are low
to prevent timeouts.
Some functions used by fuzz_webp_animencoder and fuzz_webp_enc_dec
have been moved to fuzz.h.
YannisGuyon