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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/examples/av1_dec_fuzzer.cc | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/third_party/aom/examples/av1_dec_fuzzer.cc b/third_party/aom/examples/av1_dec_fuzzer.cc new file mode 100644 index 0000000000..9b9a0b9cb6 --- /dev/null +++ b/third_party/aom/examples/av1_dec_fuzzer.cc @@ -0,0 +1,67 @@ +/* + * 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 <algorithm> +#include <memory> +#include "config/aom_config.h" +#include "aom/aom_decoder.h" +#include "aom/aomdx.h" +#include "aom_ports/mem_ops.h" + +#define IVF_FRAME_HDR_SZ (4 + 8) /* 4 byte size + 8 byte timestamp */ +#define IVF_FILE_HDR_SZ 32 + +extern "C" void usage_exit(void) { exit(EXIT_FAILURE); } + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + if (size <= IVF_FILE_HDR_SZ) { + return 0; + } + + aom_codec_iface_t *codec_interface = aom_codec_av1_dx(); + aom_codec_ctx_t codec; + // Set thread count in the range [1, 64]. + const unsigned int threads = (data[IVF_FILE_HDR_SZ] & 0x3f) + 1; + aom_codec_dec_cfg_t cfg = { threads, 0, 0, !FORCE_HIGHBITDEPTH_DECODING }; + if (aom_codec_dec_init(&codec, codec_interface, &cfg, 0)) { + return 0; + } + + data += IVF_FILE_HDR_SZ; + size -= IVF_FILE_HDR_SZ; + + while (size > IVF_FRAME_HDR_SZ) { + size_t frame_size = mem_get_le32(data); + size -= IVF_FRAME_HDR_SZ; + data += IVF_FRAME_HDR_SZ; + frame_size = std::min(size, frame_size); + + const aom_codec_err_t err = + aom_codec_decode(&codec, data, 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) { + } + data += frame_size; + size -= frame_size; + } + aom_codec_destroy(&codec); + return 0; +} |