| /** |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // This PoC is written using aac_dec_fuzzer.cpp as reference. |
| #include "aacdecoder_lib.h" |
| #include <stdlib.h> |
| |
| constexpr uint8_t kNumberOfLayers = 1; |
| constexpr uint8_t kMaxChannelCount = 8; |
| constexpr uint8_t kConfigBytes = 92; |
| constexpr uint32_t kMaxOutBufferSize = 2048 * kMaxChannelCount; |
| |
| class Codec { |
| public: |
| Codec() = default; |
| ~Codec() { deInitDecoder(); } |
| bool initDecoder(); |
| void decodeFrames(UCHAR *data, UINT size); |
| void deInitDecoder(); |
| |
| private: |
| HANDLE_AACDECODER mAacDecoderHandle = nullptr; |
| AAC_DECODER_ERROR mErrorCode = AAC_DEC_OK; |
| bool mConfigFlag = false; |
| }; |
| |
| bool Codec::initDecoder() { |
| mAacDecoderHandle = aacDecoder_Open(TT_MP4_ADIF, kNumberOfLayers); |
| if (!mAacDecoderHandle) { |
| return false; |
| } |
| return true; |
| } |
| |
| void Codec::deInitDecoder() { |
| aacDecoder_Close(mAacDecoderHandle); |
| mAacDecoderHandle = nullptr; |
| } |
| |
| void Codec::decodeFrames(UCHAR *data, UINT size) { |
| while (size > 0) { |
| UINT inputSize = size; |
| UINT valid = size; |
| |
| if (!mConfigFlag) { |
| inputSize = kConfigBytes; |
| aacDecoder_ConfigRaw(mAacDecoderHandle, &data, &inputSize); |
| data += kConfigBytes; |
| size -= kConfigBytes; |
| mConfigFlag = true; |
| continue; |
| } |
| |
| aacDecoder_Fill(mAacDecoderHandle, &data, &inputSize, &valid); |
| INT_PCM outputBuf[kMaxOutBufferSize]; |
| do { |
| mErrorCode = aacDecoder_DecodeFrame(mAacDecoderHandle, outputBuf, |
| sizeof(outputBuf), 0); |
| } while (mErrorCode == AAC_DEC_OK); |
| UINT offset = inputSize - valid; |
| data += offset; |
| size = valid; |
| } |
| } |
| |
| int main(int argc, char *argv[]) { |
| if (argc != 2) { |
| return EXIT_FAILURE; |
| } |
| |
| FILE *fp = fopen(argv[1], "rb"); |
| if (!fp) { |
| return EXIT_FAILURE; |
| } |
| |
| fseek(fp, 0, SEEK_END); |
| UINT size = ftell(fp); |
| fseek(fp, 0, SEEK_SET); |
| UCHAR *data = new UCHAR[size]; |
| fread(data, sizeof(UCHAR), size, fp); |
| fclose(fp); |
| fp = nullptr; |
| |
| Codec *codec = new Codec(); |
| if (!codec) { |
| delete[] data; |
| return EXIT_FAILURE; |
| } |
| |
| if (codec->initDecoder()) { |
| codec->decodeFrames((UCHAR *)(data), static_cast<UINT>(size)); |
| } |
| |
| delete codec; |
| delete[] data; |
| return EXIT_SUCCESS; |
| } |