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/******************************************************************************
*
* 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.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
#include <stdint.h>
#include "aacdecoder_lib.h"
constexpr uint8_t kNumberOfLayers = 1;
constexpr uint8_t kMaxChannelCount = 8;
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 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;
mErrorCode = aacDecoder_Fill(mAacDecoderHandle, &data, &inputSize, &valid);
if (mErrorCode != AAC_DEC_OK) {
++data;
--size;
} else {
INT_PCM outputBuf[2048 * kMaxChannelCount];
aacDecoder_DecodeFrame(mAacDecoderHandle, outputBuf, 2048 * kMaxChannelCount, 0);
if (valid >= inputSize) {
return;
}
UINT offset = inputSize - valid;
data += offset;
size = valid;
}
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
Codec *codec = new Codec();
if (!codec) {
return 0;
}
if (codec->initDecoder()) {
codec->decodeFrames((UCHAR *)(data), static_cast<UINT>(size));
}
delete codec;
return 0;
}
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