// Copyright 2019 Google Inc.

//

// 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.

#include "aacdecoder_lib.h"

#include <stdint.h>

#define FILEREAD_MAX_LAYERS 1

#define OUT_BUF_SIZE (8 * 2048 * 4)

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {

  HANDLE_AACDECODER aacDecoderInfo = NULL;

  INT_PCM TimeData[OUT_BUF_SIZE];

  AAC_DECODER_ERROR err;

  aacDecoderInfo = aacDecoder_Open(TT_MP4_LOAS, FILEREAD_MAX_LAYERS);

  FDK_ASSERT(aacDecoderInfo != NULL);

  const uint8_t *start = Data;

  UINT valid, buffer_size;

  do {

    valid = buffer_size = Data + Size - start;

    err = aacDecoder_Fill(aacDecoderInfo, const_cast<UCHAR **>(&start),

                          &buffer_size, &valid);

    start += buffer_size - valid;

    if (err == AAC_DEC_OK) {

      do {

        err = aacDecoder_DecodeFrame(aacDecoderInfo, TimeData, OUT_BUF_SIZE, 0);

        if (err != AAC_DEC_OK && err != AAC_DEC_NOT_ENOUGH_BITS) {

          aacDecoder_Close(aacDecoderInfo);

          aacDecoderInfo = NULL;

          return 0;

        }

      } while (err != AAC_DEC_NOT_ENOUGH_BITS);

    }

  } while (valid > 0);

  aacDecoder_Close(aacDecoderInfo);

  aacDecoderInfo = NULL;

  return 0;

}