aom: update libaom to 0ec86ac7ae1e32a7e70410fa4972a655ec3670a4

third_party/aom/examples/build_av1_dec_fuzzer.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+#
+# Copyright (c) 2019, Alliance for Open Media. All rights reserved
+#
+# This source code is subject to the terms of the BSD 2 Clause License and
+# the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+# was not distributed with this source code in the LICENSE file, you can
+# obtain it at www.aomedia.org/license/software. If the Alliance for Open
+# Media Patent License 1.0 was not distributed with this source code in the
+# PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+#
+###############################################################################
+# Fuzzer for libaom decoder.
+# ==========================
+# Requirements
+# ---------------------
+# Clang6.0 or above (must support -fsanitize=fuzzer)
+#
+# References:
+# ---------------------
+# http://llvm.org/docs/LibFuzzer.html
+# https://github.com/google/oss-fuzz
+#
+# Steps to build / run
+# ---------------------
+
+set -eu
+
+# Have a copy of AOM and a build directory ready.
+if [[ $# -ne 2 ]]; then
+  echo "Pass in the AOM source tree as first argument, and a build directory "
+  echo "as the second argument. The AOM source tree can be obtained via: "
+  echo "  git clone https://aomedia.googlesource.com/aom"
+  exit 2
+fi
+if [[ -z "$CC" ]]; then
+  echo "Set the CC environment variable to point to your C compiler."
+  exit 2
+fi
+if [[ -z "$CXX" ]]; then
+  echo "Set the CXX environment variable to point to your C++ compiler."
+  exit 2
+fi
+
+AOM_DIR=$1
+BUILD_DIR=$2
+# Run CMake with address sanitizer enabled and build the codec.
+# Enable DO_RANGE_CHECK_CLAMP to suppress the noise of integer overflows
+# in the transform functions. Also set memory limits.
+EXTRA_C_FLAGS='-DDO_RANGE_CHECK_CLAMP=1 -DAOM_MAX_ALLOCABLE_MEMORY=1073741824'
+cd "${BUILD_DIR}"
+cmake "${AOM_DIR}" -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCONFIG_PIC=1 \
+  -DCONFIG_SCALABILITY=0 -DCONFIG_LOWBITDEPTH=1 -DCONFIG_AV1_ENCODER=0 \
+  -DENABLE_EXAMPLES=0 -DENABLE_DOCS=0 -DENABLE_TESTS=0 -DCONFIG_SIZE_LIMIT=1 \
+  -DDECODE_HEIGHT_LIMIT=12288 -DDECODE_WIDTH_LIMIT=12288 \
+  -DAOM_EXTRA_C_FLAGS="${EXTRA_C_FLAGS}" \
+  -DAOM_EXTRA_CXX_FLAGS="${EXTRA_C_FLAGS}" -DSANITIZE=address
+
+# Build the codec.
+make -j$(nproc)
+
+# Build some libaom utils that are not part of the core lib.
+$CC -std=c99 -c -I${AOM_DIR} -I${BUILD_DIR} \
+  ${AOM_DIR}/common/ivfdec.c -o ${BUILD_DIR}/ivfdec.o
+
+$CC -std=c99 -c -I${AOM_DIR} -I${BUILD_DIR} \
+  ${AOM_DIR}/common/tools_common.c -o ${BUILD_DIR}/tools_common.o
+
+# Build the av1 fuzzer
+$CXX -std=c++11 -DDECODER=av1 -I${AOM_DIR} -I${BUILD_DIR} \
+    -fsanitize=fuzzer -Wl,--start-group \
+    ${AOM_DIR}/examples/av1_dec_fuzzer.cc -o ${BUILD_DIR}/av1_dec_fuzzer \
+    ${BUILD_DIR}/libaom.a ${BUILD_DIR}/ivfdec.o ${BUILD_DIR}/tools_common.o \
+    -Wl,--end-group
+
+echo "Fuzzer built at ${BUILD_DIR}/av1_dec_fuzzer."
+echo "Create a corpus directory, copy IVF files in there, and run:"
+echo "  av1_dec_fuzzer CORPUS_DIR"