Only fuzz apodizations on small inputs (#479)

1 files changed, 8 insertions, 2 deletions

diff --git a/oss-fuzz/fuzzer_encoder.cc b/oss-fuzz/fuzzer_encoder.cc
index b4f25ec7..6d230122 100644
--- a/oss-fuzz/fuzzer_encoder.cc
+++ b/oss-fuzz/fuzzer_encoder.cc
@@ -139,16 +139,22 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
             fuzzing::memory::memory_test(res);
         }
 
-        if ( size > 2 * 65535 ) {
+        if ( size > 2 * 65535 * 4 ) {
             /* With large inputs and expensive options enabled, the fuzzer can get *really* slow.
             * Some combinations can make the fuzzer timeout (>60 seconds). However, while combining
             * options makes the fuzzer slower, most options do not expose new code when combined.
             * Therefore, combining slow options is disabled for large inputs. Any input containing
-            * more than 65536 * 2 samples (max blocksize, stereo) is considered large
+            * more than 65536 * 2 samples of 32 bits each (max blocksize, stereo) is considered large
             */
             encoder.set_do_qlp_coeff_prec_search(false);
             encoder.set_do_exhaustive_model_search(false);
         }
+        if ( size > 2 * 4096 * 4 + 250 ) {
+            /* With subdivide_tukey in the mix testing apodizations can get really expensive. Therefore
+             * this is disabled for inputs of more than one whole stereo block of 32-bit inputs plus a
+             * bit of overhead */
+            encoder.set_apodization("");
+        }
 
         {
             ::FLAC__StreamEncoderInitStatus ret;