| #!/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 -fsanitize=fuzzer-no-link) |
| # |
| # 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 "${AOM_DIR}" -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCONFIG_PIC=1 \ |
| -DCONFIG_SCALABILITY=0 -DFORCE_HIGHBITDEPTH_DECODING=0 -DCONFIG_AV1_ENCODER=0 \ |
| -DENABLE_EXAMPLES=0 -DENABLE_DOCS=0 -DENABLE_TESTS=0 -DCONFIG_SIZE_LIMIT=1 \ |
| -DDECODE_HEIGHT_LIMIT=12288 -DDECODE_WIDTH_LIMIT=12288 \ |
| -DAOM_EXTRA_C_FLAGS="${EXTRA_C_FLAGS}" \ |
| -DAOM_EXTRA_CXX_FLAGS="${EXTRA_C_FLAGS}" -DSANITIZE=fuzzer-no-link,address |
| |
| # Build the codec. |
| make -j$(nproc) |
| |
| # Build the av1 fuzzer |
| $CXX -std=c++11 -DDECODER=av1 -I${AOM_DIR} -I${BUILD_DIR} \ |
| -fsanitize=fuzzer,address -Wl,--start-group \ |
| ${AOM_DIR}/examples/av1_dec_fuzzer.cc -o ${BUILD_DIR}/av1_dec_fuzzer \ |
| ${BUILD_DIR}/libaom.a -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" |