Added xaac_dec_fuzzer

Test: ./xaac_dec_fuzzer
Bug: 135629873
Change-Id: I4f727f7ac90090700b6848f6860382d3786a4312
diff --git a/fuzzer/ossfuzz.sh b/fuzzer/ossfuzz.sh
new file mode 100755
index 0000000..aac1654
--- /dev/null
+++ b/fuzzer/ossfuzz.sh
@@ -0,0 +1,43 @@
+#!/bin/bash -eu
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+# Ensure SRC and WORK are set
+test "${SRC}" != "" || exit 1
+test "${WORK}" != "" || exit 1
+
+# Build libxaac
+build_dir=$WORK/build
+rm -rf ${build_dir}
+mkdir -p ${build_dir}
+pushd ${build_dir}
+
+cmake $SRC/libxaac
+make -j$(nproc)
+popd
+
+# build fuzzers
+$CXX $CXXFLAGS -std=c++11 \
+    -I$SRC/libxaac \
+    -I$SRC/libxaac/common \
+    -I$SRC/libxaac/decoder \
+    -I$SRC/libxaac/decoder/drc_src \
+    -I${build_dir} \
+    -Wl,--start-group \
+    $LIB_FUZZING_ENGINE \
+    $SRC/libxaac/fuzzer/xaac_dec_fuzzer.cpp -o $OUT/xaac_dec_fuzzer \
+    ${build_dir}/libxaacdec.a \
+    -Wl,--end-group
+
+cp $SRC/libxaac/fuzzer/xaac_dec_fuzzer.dict $OUT/xaacdec_fuzzer.dict