Move av1 decoder fuzzer from OSS directory into libaom
BUG=aomedia:2257
Change-Id: I3f9c1a407e4c9500752c09e76004101eb302db25
diff --git a/examples/av1_dec_fuzzer.cc b/examples/av1_dec_fuzzer.cc
new file mode 100644
index 0000000..96d16a8
--- /dev/null
+++ b/examples/av1_dec_fuzzer.cc
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+/*
+ * See build_av1_dec_fuzzer.sh for building instructions.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory>
+
+#include "config/aom_config.h"
+#include "aom/aom_decoder.h"
+#include "aom/aomdx.h"
+#include "aom_ports/mem_ops.h"
+#include "common/ivfdec.h"
+
+static void close_file(FILE *file) { fclose(file); }
+
+extern "C" void usage_exit(void) { exit(EXIT_FAILURE); }
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+ std::unique_ptr<FILE, decltype(&close_file)> file(
+ fmemopen((void *)data, size, "rb"), &close_file);
+ if (file == nullptr) {
+ return 0;
+ }
+
+ char header[32];
+ if (fread(header, 1, 32, file.get()) != 32) {
+ return 0;
+ }
+ const AvxInterface *decoder = get_aom_decoder_by_name("av1");
+ if (decoder == nullptr) {
+ return 0;
+ }
+
+ aom_codec_ctx_t codec;
+ // Set thread count in the range [1, 64].
+ const unsigned int threads = (header[0] & 0x3f) + 1;
+ aom_codec_dec_cfg_t cfg = { threads, 0, 0, CONFIG_LOWBITDEPTH };
+ if (aom_codec_dec_init(&codec, decoder->codec_interface(), &cfg, 0)) {
+ return 0;
+ }
+
+ uint8_t *buffer = nullptr;
+ size_t buffer_size = 0;
+ size_t frame_size = 0;
+ while (!ivf_read_frame(file.get(), &buffer, &frame_size, &buffer_size,
+ nullptr)) {
+ const aom_codec_err_t err =
+ aom_codec_decode(&codec, buffer, frame_size, nullptr);
+ static_cast<void>(err);
+ aom_codec_iter_t iter = nullptr;
+ aom_image_t *img = nullptr;
+ while ((img = aom_codec_get_frame(&codec, &iter)) != nullptr) {
+ }
+ }
+ aom_codec_destroy(&codec);
+ free(buffer);
+ return 0;
+}
diff --git a/examples/build_av1_dec_fuzzer.sh b/examples/build_av1_dec_fuzzer.sh
new file mode 100755
index 0000000..86992a0
--- /dev/null
+++ b/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"
