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- #!/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=$2
- # Run CMake with address sanitizer enabled and build the codec.
- # Enable DO_RANGE_CHECK_CLAMP to suppress the noise of integer overflows
- # in the transform functions. Also set memory limits.
- EXTRA_C_FLAGS='-UNDEBUG -DDO_RANGE_CHECK_CLAMP=1 -DAOM_MAX_ALLOCABLE_MEMORY=1073741824'
- cd "${BUILD_DIR}"
- cmake "${AOM_DIR}" -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCONFIG_PIC=1 \
- -DFORCE_HIGHBITDEPTH_DECODING=0 \
- -DCONFIG_AV1_ENCODER=0 -DENABLE_EXAMPLES=0 -DENABLE_DOCS=0 -DENABLE_TESTS=0 \
- -DCONFIG_SIZE_LIMIT=1 -DDECODE_HEIGHT_LIMIT=12288 -DDECODE_WIDTH_LIMIT=12288 \
- -DAOM_EXTRA_C_FLAGS="${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
- $CXX -std=c++11 -I${AOM_DIR} -I${BUILD_DIR} \
- -g -fsanitize=fuzzer,address \
- ${AOM_DIR}/examples/av1_dec_fuzzer.cc -o ${BUILD_DIR}/av1_dec_fuzzer \
- ${BUILD_DIR}/libaom.a
- 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"
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