/*
    RawSpeed - RAW file decoder.

    Copyright (C) 2017 Roman Lebedev

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "decompressors/PentaxDecompressor.h" // for PentaxDecompressor
#include "common/RawImage.h"                  // for RawImage
#include "common/RawspeedException.h"         // for RawspeedException
#include "fuzz/Common.h"                      // for CreateRawImage
#include "io/Buffer.h"                        // for Buffer, DataBuffer
#include "io/ByteStream.h"                    // for ByteStream
#include "io/Endianness.h"                    // for Endianness, Endianne...
#include <cassert>                            // for assert
#include <cstdint>                            // for uint8_t
#include <cstdio>                             // for size_t

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

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

  try {
    const rawspeed::Buffer b(Data, Size);
    const rawspeed::DataBuffer db(b, rawspeed::Endianness::little);
    rawspeed::ByteStream bs(db);

    rawspeed::RawImage mRaw(CreateRawImage(&bs));

    rawspeed::ByteStream* metaData = nullptr;
    rawspeed::ByteStream metaDataStream;

    const bool haveMetadata = bs.get<rawspeed::uint32>();
    if (haveMetadata) {
      const auto medataLength = bs.get<rawspeed::uint32>();
      metaDataStream = bs.getStream(medataLength);
      metaData = &metaDataStream;
    }

    rawspeed::ByteStream rawData = bs.getStream(bs.getRemainSize());

    rawspeed::PentaxDecompressor p(mRaw, metaData);
    mRaw->createData();
    p.decompress(rawData);

    mRaw->checkMemIsInitialized();
  } catch (rawspeed::RawspeedException&) {
    // Exceptions are good, crashes are bad.
  }

  return 0;
}
