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tools/target_dec_fuzzer: Increase maxpixels threshold for dirac 

wavelets allow significant size expansion and they are also not
very fast.

Fixes: Timeout
Fixes: 16480/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5659892689403904 (108sec -> 17ms)
Fixes: 16480/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5749422717140992 (big ->15sec)

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-08-25 01:00:30 +02:00
parent 5af613cc48
commit 02a44ed0c8
1 changed files with 1 additions and 0 deletions
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tools/target_dec_fuzzer.c
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@ -128,6 +128,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
maxpixels = maxpixels_per_frame * maxiteration;
switch (c->id) {
// Allows a small input to generate gigantic output
case AV_CODEC_ID_DIRAC: maxpixels /= 8192; break;
case AV_CODEC_ID_MSRLE: maxpixels /= 16; break;
case AV_CODEC_ID_QTRLE: maxpixels /= 16; break;
case AV_CODEC_ID_GIF: maxpixels /= 16; break;