[FFmpeg-cvslog] tools/target_dec_fuzzer: Adjust threshold for VP9

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Fri Oct 18 23:40:22 2019 +0200| [e21ec54fdf95bff3c0e1148554c5a542ee1e4dae] | committer: Michael Niedermayer

tools/target_dec_fuzzer: Adjust threshold for VP9

The threshold is chosen so that the worse frames would together not take
excessive time.
A better solution is welcome!

Fixes: Timeout (308sec ->102ms)
Fixes: 18314/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VP9_fuzzer-5701689176227840

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e21ec54fdf95bff3c0e1148554c5a542ee1e4dae
---

 tools/target_dec_fuzzer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 1302a4458a..1c4fb11b8a 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -163,6 +163,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     case AV_CODEC_ID_TGV:         maxpixels /= 32;    break;
     case AV_CODEC_ID_TRUEMOTION2: maxpixels /= 1024; break;
     case AV_CODEC_ID_VP7:         maxpixels /= 256;  break;
+    case AV_CODEC_ID_VP9:         maxpixels /= 4096; break;
     }