av1_dec_fuzzer: get thread count from 1st byte of frame header
In most of the cases, 1st byte of the file header is 'D'.
So using first byte results in same thread count in most cases.
Using 33rd (offset 32, 1st byte of frame header) byte in the data
(one of the bytes that signals size of the frame) will help in
better coverage for number of threads.
Change-Id: I4494cad8e15d5c81920448904487ac24f7171e88
diff --git a/examples/av1_dec_fuzzer.cc b/examples/av1_dec_fuzzer.cc
index d2bfee1..937c944 100644
--- a/examples/av1_dec_fuzzer.cc
+++ b/examples/av1_dec_fuzzer.cc
@@ -37,7 +37,7 @@
const aom_codec_iface_t *codec_interface = aom_codec_av1_dx();
aom_codec_ctx_t codec;
// Set thread count in the range [1, 64].
- const unsigned int threads = (data[0] & 0x3f) + 1;
+ const unsigned int threads = (data[IVF_FILE_HDR_SZ] & 0x3f) + 1;
aom_codec_dec_cfg_t cfg = { threads, 0, 0, CONFIG_LOWBITDEPTH, { 1 } };
if (aom_codec_dec_init(&codec, codec_interface, &cfg, 0)) {
return 0;
