C++ TiffEntry类代码示例

void PefDecoder::decodeMetaDataInternal(const CameraMetaData* meta) {
  int iso = 0;
  mRaw->cfa.setCFA(iPoint2D(2,2), CFA_RED, CFA_GREEN, CFA_GREEN, CFA_BLUE);

  if (mRootIFD->hasEntryRecursive(ISOSPEEDRATINGS))
    iso = mRootIFD->getEntryRecursive(ISOSPEEDRATINGS)->getU32();

  setMetaData(meta, "", iso);

  // Read black level
  if (mRootIFD->hasEntryRecursive(static_cast<TiffTag>(0x200))) {
    TiffEntry* black = mRootIFD->getEntryRecursive(static_cast<TiffTag>(0x200));
    if (black->count == 4) {
      for (int i = 0; i < 4; i++)
        mRaw->blackLevelSeparate[i] = black->getU32(i);
    }
  }

  // Set the whitebalance
  if (mRootIFD->hasEntryRecursive(static_cast<TiffTag>(0x0201))) {
    TiffEntry* wb = mRootIFD->getEntryRecursive(static_cast<TiffTag>(0x0201));
    if (wb->count == 4) {
      mRaw->metadata.wbCoeffs[0] = wb->getU32(0);
      mRaw->metadata.wbCoeffs[1] = wb->getU32(1);
      mRaw->metadata.wbCoeffs[2] = wb->getU32(3);
    }
  }
}

MosDecoder::MosDecoder(TiffIFD *rootIFD, FileMap* file)  :
    RawDecoder(file), mRootIFD(rootIFD) {
  decoderVersion = 0;
  black_level = 0;

  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(MAKE);
  if (!data.empty()) {
    make = data[0]->getEntry(MAKE)->getString();
    model = data[0]->getEntry(MODEL)->getString();
  } else {
    TiffEntry *xmp = mRootIFD->getEntryRecursive(XMP);
    if (!xmp)
      ThrowRDE("MOS Decoder: Couldn't find the XMP");
    string xmpText = xmp->getString();
    make = getXMPTag(xmpText, "Make");
    model = getXMPTag(xmpText, "Model");
  }
}

RawImage DcsDecoder::decodeRawInternal() {
  SimpleTiffDecoder::prepareForRawDecoding();

  TiffEntry *linearization = mRootIFD->getEntryRecursive(GRAYRESPONSECURVE);
  if (!linearization || linearization->count != 256 || linearization->type != TIFF_SHORT)
    ThrowRDE("Couldn't find the linearization table");

  assert(linearization != nullptr);
  auto table = linearization->getU16Array(256);

  RawImageCurveGuard curveHandler(&mRaw, table, uncorrectedRawValues);

  UncompressedDecompressor u(*mFile, off, c2, mRaw);

  if (uncorrectedRawValues)
    u.decode8BitRaw<true>(width, height);
  else
    u.decode8BitRaw<false>(width, height);

  return mRaw;
}

RawImage KdcDecoder::decodeRawInternal() {
  int compression = mRootIFD->getEntryRecursive(COMPRESSION)->getInt();
  if (7 != compression)
    ThrowRDE("KDC Decoder: Unsupported compression %d", compression);

  TiffEntry *ex = mRootIFD->getEntryRecursive(PIXELXDIMENSION);
  TiffEntry *ey = mRootIFD->getEntryRecursive(PIXELYDIMENSION);

  if (NULL == ex || NULL == ey)
    ThrowRDE("KDC Decoder: Unable to retrieve image size");

  uint32 width = ex->getInt();
  uint32 height = ey->getInt();

  TiffEntry *offset = mRootIFD->getEntryRecursive(KODAK_KDC_OFFSET);
  if (!offset || offset->count < 13)
    ThrowRDE("KDC Decoder: Couldn't find the KDC offset");
  const uint32 *offsetarray = offset->getIntArray();
  uint32 off = offsetarray[4] + offsetarray[12];

  mRaw->dim = iPoint2D(width, height);
  mRaw->createData();
  ByteStream input(mFile->getData(off), mFile->getSize()-off);

  Decode12BitRawBE(input, width, height);

  return mRaw;
}

void PefDecoder::decodeMetaDataInternal(CameraMetaData *meta) {
  int iso = 0;
  mRaw->cfa.setCFA(iPoint2D(2,2), CFA_RED, CFA_GREEN, CFA_GREEN2, CFA_BLUE);
  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(MODEL);

  if (data.empty())
    ThrowRDE("PEF Meta Decoder: Model name found");

  TiffIFD* raw = data[0];

  string make = raw->getEntry(MAKE)->getString();
  string model = raw->getEntry(MODEL)->getString();

  if (mRootIFD->hasEntryRecursive(ISOSPEEDRATINGS))
    iso = mRootIFD->getEntryRecursive(ISOSPEEDRATINGS)->getInt();

  setMetaData(meta, make, model, "", iso);

  // Read black level
  if (mRootIFD->hasEntryRecursive((TiffTag)0x200)) {
    TiffEntry *black = mRootIFD->getEntryRecursive((TiffTag)0x200);
    const ushort16 *levels = black->getShortArray();
    for (int i = 0; i < 4; i++)
      mRaw->blackLevelSeparate[i] = levels[i];
  }

  // Set the whitebalance
  if (mRootIFD->hasEntryRecursive((TiffTag) 0x0201)) {
    TiffEntry *wb = mRootIFD->getEntryRecursive((TiffTag) 0x0201);
    if (wb->count == 4) {
      const ushort16 *tmp = wb->getShortArray();
      mRaw->metadata.wbCoeffs[0] = tmp[0];
      mRaw->metadata.wbCoeffs[1] = tmp[1];
      mRaw->metadata.wbCoeffs[2] = tmp[3];
    }
  }
}

void KdcDecoder::decodeMetaDataInternal(CameraMetaData *meta) {
  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(MODEL);

  if (data.empty())
    ThrowRDE("KDC Decoder: Model name found");
  if (!data[0]->hasEntry(MAKE))
    ThrowRDE("KDC Decoder: Make name not found");

  string make = data[0]->getEntry(MAKE)->getString();
  string model = data[0]->getEntry(MODEL)->getString();
  setMetaData(meta, make, model, "", 0);

  // Try the kodak hidden IFD for WB
  if (mRootIFD->hasEntryRecursive(KODAK_IFD2)) {
    TiffEntry *ifdoffset = mRootIFD->getEntryRecursive(KODAK_IFD2);
    TiffIFD *kodakifd = NULL;
    try {
      if (mRootIFD->endian == getHostEndianness())
        kodakifd = new TiffIFD(mFile, ifdoffset->getInt());
      else
        kodakifd = new TiffIFDBE(mFile, ifdoffset->getInt());

     if (kodakifd && kodakifd->hasEntryRecursive(KODAK_KDC_WB)) {
        TiffEntry *wb = kodakifd->getEntryRecursive(KODAK_KDC_WB);
        if (wb->count == 3) {
          const uint32 *tmp = wb->getIntArray();
          mRaw->metadata.wbCoeffs[0] = (float)tmp[0];
          mRaw->metadata.wbCoeffs[1] = (float)tmp[1];
          mRaw->metadata.wbCoeffs[2] = (float)tmp[2];
        }
      }
    } catch(TiffParserException e) {
      mRaw->setError(e.what());
    }
    if (kodakifd)
      delete kodakifd;
  }

  // Use the normal WB if available
  if (mRootIFD->hasEntryRecursive(KODAKWB)) {
    TiffEntry *wb = mRootIFD->getEntryRecursive(KODAKWB);
    if (wb->count == 734 || wb->count == 1502) {
      const uchar8 *tmp = wb->getData();
      mRaw->metadata.wbCoeffs[0] = (float)((((ushort16) tmp[148])<<8)|tmp[149])/256.0f;
      mRaw->metadata.wbCoeffs[1] = 1.0f;
      mRaw->metadata.wbCoeffs[2] = (float)((((ushort16) tmp[150])<<8)|tmp[151])/256.0f;
    }
  }
}

RawImage PefDecoder::decodeRawInternal() {
  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(STRIPOFFSETS);

  if (data.empty())
    ThrowRDE("PEF Decoder: No image data found");

  TiffIFD* raw = data[0];

  int compression = raw->getEntry(COMPRESSION)->getInt();

  if (1 == compression) {
    decodeUncompressed(raw, true);
    return mRaw;
  }

  if (65535 != compression)
    ThrowRDE("PEF Decoder: Unsupported compression");

  TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
  TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);

  if (offsets->count != 1) {
    ThrowRDE("PEF Decoder: Multiple Strips found: %u", offsets->count);
  }
  if (counts->count != offsets->count) {
    ThrowRDE("PEF Decoder: Byte count number does not match strip size: count:%u, strips:%u ", counts->count, offsets->count);
  }
  if (!mFile->isValid(offsets->getInt() + counts->getInt()))
    ThrowRDE("PEF Decoder: Truncated file.");

  uint32 width = raw->getEntry(IMAGEWIDTH)->getInt();
  uint32 height = raw->getEntry(IMAGELENGTH)->getInt();

  mRaw->dim = iPoint2D(width, height);
  mRaw->createData();
  try {
    PentaxDecompressor l(mFile, mRaw);
    l.decodePentax(mRootIFD, offsets->getInt(), counts->getInt());
  } catch (IOException &e) {
    errors.push_back(_strdup(e.what()));
    // Let's ignore it, it may have delivered somewhat useful data.
  }

  return mRaw;
}

RawImage PefDecoder::decodeRawInternal() {
  auto raw = mRootIFD->getIFDWithTag(STRIPOFFSETS);

  int compression = raw->getEntry(COMPRESSION)->getU32();

  if (1 == compression || compression == 32773) {
    decodeUncompressed(raw, BitOrder_MSB);
    return mRaw;
  }

  if (65535 != compression)
    ThrowRDE("Unsupported compression");

  TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
  TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);

  if (offsets->count != 1) {
    ThrowRDE("Multiple Strips found: %u", offsets->count);
  }
  if (counts->count != offsets->count) {
    ThrowRDE(
        "Byte count number does not match strip size: count:%u, strips:%u ",
        counts->count, offsets->count);
  }
  if (!mFile->isValid(offsets->getU32(), counts->getU32()))
    ThrowRDE("Truncated file.");

  uint32 width = raw->getEntry(IMAGEWIDTH)->getU32();
  uint32 height = raw->getEntry(IMAGELENGTH)->getU32();

  mRaw->dim = iPoint2D(width, height);
  mRaw->createData();
  try {
    PentaxDecompressor::decompress(
        mRaw, ByteStream(mFile, offsets->getU32(), counts->getU32()),
        getRootIFD());
  } catch (IOException &e) {
    mRaw->setError(e.what());
    // Let's ignore it, it may have delivered somewhat useful data.
  }

  return mRaw;
}

RawImage Rw2Decoder::decodeRawInternal() {

  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(PANASONIC_STRIPOFFSET);

  bool isOldPanasonic = FALSE;

  if (data.empty()) {
    if (!mRootIFD->hasEntryRecursive(STRIPOFFSETS))
      ThrowRDE("RW2 Decoder: No image data found");
    isOldPanasonic = TRUE;
    data = mRootIFD->getIFDsWithTag(STRIPOFFSETS);
  }

  TiffIFD* raw = data[0];
  uint32 height = raw->getEntry((TiffTag)3)->getShort();
  uint32 width = raw->getEntry((TiffTag)2)->getShort();

  if (isOldPanasonic) {
    ThrowRDE("Cannot decode old-style Panasonic RAW files");
    TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
    TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);

    if (offsets->count != 1) {
      ThrowRDE("RW2 Decoder: Multiple Strips found: %u", offsets->count);
    }
    int off = offsets->getInt();
    if (!mFile->isValid(off))
      ThrowRDE("Panasonic RAW Decoder: Invalid image data offset, cannot decode.");

    int count = counts->getInt();
    if (count != (int)(width*height*2))
      ThrowRDE("Panasonic RAW Decoder: Byte count is wrong.");

    if (!mFile->isValid(off+count))
      ThrowRDE("Panasonic RAW Decoder: Invalid image data offset, cannot decode.");
      
    mRaw->dim = iPoint2D(width, height);
    mRaw->createData();
    ByteStream input_start(mFile->getData(off), mFile->getSize() - off);
    iPoint2D pos(0, 0);
    readUncompressedRaw(input_start, mRaw->dim,pos, width*2, 16, BitOrder_Plain);

  } else {

    mRaw->dim = iPoint2D(width, height);
    mRaw->createData();
    TiffEntry *offsets = raw->getEntry(PANASONIC_STRIPOFFSET);

    if (offsets->count != 1) {
      ThrowRDE("RW2 Decoder: Multiple Strips found: %u", offsets->count);
    }

    load_flags = 0x2008;
    int off = offsets->getInt();

    if (!mFile->isValid(off))
      ThrowRDE("RW2 Decoder: Invalid image data offset, cannot decode.");

    input_start = new ByteStream(mFile->getData(off), mFile->getSize() - off);
    DecodeRw2();
  }
  // Read blacklevels
  if (raw->hasEntry((TiffTag)0x1c) && raw->hasEntry((TiffTag)0x1d) && raw->hasEntry((TiffTag)0x1e)) {
    mRaw->blackLevelSeparate[0] = raw->getEntry((TiffTag)0x1c)->getInt() + 15;
    mRaw->blackLevelSeparate[1] = mRaw->blackLevelSeparate[2] = raw->getEntry((TiffTag)0x1d)->getInt() + 15;
    mRaw->blackLevelSeparate[3] = raw->getEntry((TiffTag)0x1e)->getInt() + 15;
  }
  return mRaw;
}

RawDecoder* RawParser::getDecoder(CameraMetaData* meta) {
  const unsigned char* data = mInput->getData(0);
  // We need some data.
  // For now it is 104 bytes for RAF images.
  if (mInput->getSize() <=  104)
    ThrowRDE("File too small");

  // MRW images are easy to check for, let's try that first
  if (MrwDecoder::isMRW(mInput)) {
    try {
      return new MrwDecoder(mInput);
    } catch (RawDecoderException) {
    }
  }

  if (0 == memcmp(&data[0], "ARRI\x12\x34\x56\x78", 8)) {
    try {
      return new AriDecoder(mInput);
    } catch (RawDecoderException) {
    }
  }

  // FUJI has pointers to IFD's at fixed byte offsets
  // So if camera is FUJI, we cannot use ordinary TIFF parser
  if (0 == memcmp(&data[0], "FUJIFILM", 8)) {
    // First IFD typically JPEG and EXIF
    uint32 first_ifd = data[87] | (data[86]<<8) | (data[85]<<16) | (data[84]<<24);
    first_ifd += 12;
    if (mInput->getSize() <=  first_ifd)
      ThrowRDE("File too small (FUJI first IFD)");

    // RAW IFD on newer, pointer to raw data on older models, so we try parsing first
    // And adds it as data if parsin fails
    uint32 second_ifd = (uint32)data[103] | (data[102]<<8) | (data[101]<<16) | (data[100]<<24);
    if (mInput->getSize() <=  second_ifd)
      second_ifd = 0;

    // RAW information IFD on older
    uint32 third_ifd = data[95] | (data[94]<<8) | (data[93]<<16) | (data[92]<<24);
    if (mInput->getSize() <=  third_ifd)
      third_ifd = 0;

    // Open the IFDs and merge them
    try {
      FileMap *m1 = new FileMap(mInput->getDataWrt(first_ifd), mInput->getSize()-first_ifd);
      FileMap *m2 = NULL;
      TiffParser p(m1);
      p.parseData();
      if (second_ifd) {
        m2 = new FileMap(mInput->getDataWrt(second_ifd), mInput->getSize()-second_ifd);
        try {
          TiffParser p2(m2);
          p2.parseData();
          p.MergeIFD(&p2);
        } catch (TiffParserException e) {
          delete m2;
          m2 = NULL;
       }
      }

      TiffIFD *new_ifd = new TiffIFD(mInput);
      p.RootIFD()->mSubIFD.push_back(new_ifd);

      if (third_ifd) {
        try {
          ParseFuji(third_ifd, new_ifd);
        } catch (TiffParserException e) {
        }
      }
      // Make sure these aren't leaked.
      RawDecoder *d = p.getDecoder();
      d->ownedObjects.push_back(m1);
      if (m2)
        d->ownedObjects.push_back(m2);

      if (!m2 && second_ifd) {
        TiffEntry *entry = new TiffEntry(FUJI_STRIPOFFSETS, TIFF_LONG, 1);
        entry->setData(&second_ifd, 4);
        new_ifd->mEntry[entry->tag] = entry;
        entry = new TiffEntry(FUJI_STRIPBYTECOUNTS, TIFF_LONG, 1);
        uint32 max_size = mInput->getSize()-second_ifd;
        entry->setData(&max_size, 4);
        new_ifd->mEntry[entry->tag] = entry;
      }
      return d;
    } catch (TiffParserException) {}
    ThrowRDE("No decoder found. Sorry.");
  }

  // Ordinary TIFF images
  try {
    TiffParser p(mInput);
    p.parseData();
    return p.getDecoder();
  } catch (TiffParserException) {}

  try {
    X3fParser parser(mInput);
    return parser.getDecoder();
  } catch (RawDecoderException) {
//.........这里部分代码省略.........

RawImage NefDecoder::decodeRawInternal() {
  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(CFAPATTERN);

  if (data.empty())
    ThrowRDE("NEF Decoder: No image data found");

  TiffIFD* raw = data[0];
  int compression = raw->getEntry(COMPRESSION)->getInt();

  data = mRootIFD->getIFDsWithTag(MODEL);

  if (data.empty())
    ThrowRDE("NEF Decoder: No model data found");

  TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
  TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);

  if (!data[0]->getEntry(MODEL)->getString().compare("NIKON D100 ")) {  /**Sigh**/
    if (!mFile->isValid(offsets->getInt()))
      ThrowRDE("NEF Decoder: Image data outside of file.");
    if (!D100IsCompressed(offsets->getInt())) {
      DecodeD100Uncompressed();
      return mRaw;
    }
  }

  if (compression == 1 || (hints.find(string("force_uncompressed")) != hints.end()) ||
      NEFIsUncompressed(raw)) {
    DecodeUncompressed();
    return mRaw;
  }

  if (NEFIsUncompressedRGB(raw)) {
    DecodeSNefUncompressed();
    return mRaw;
  }

  if (offsets->count != 1) {
    ThrowRDE("NEF Decoder: Multiple Strips found: %u", offsets->count);
  }
  if (counts->count != offsets->count) {
    ThrowRDE("NEF Decoder: Byte count number does not match strip size: count:%u, strips:%u ", counts->count, offsets->count);
  }
  if (!mFile->isValid(offsets->getInt(), counts->getInt()))
    ThrowRDE("NEF Decoder: Invalid strip byte count. File probably truncated.");


  if (34713 != compression)
    ThrowRDE("NEF Decoder: Unsupported compression");

  uint32 width = raw->getEntry(IMAGEWIDTH)->getInt();
  uint32 height = raw->getEntry(IMAGELENGTH)->getInt();
  uint32 bitPerPixel = raw->getEntry(BITSPERSAMPLE)->getInt();

  mRaw->dim = iPoint2D(width, height);
  mRaw->createData();

  data = mRootIFD->getIFDsWithTag((TiffTag)0x8c);

  if (data.empty())
    ThrowRDE("NEF Decoder: Decompression info tag not found");

  TiffEntry *meta;
  if (data[0]->hasEntry((TiffTag)0x96)) {
    meta = data[0]->getEntry((TiffTag)0x96);
  } else {
    meta = data[0]->getEntry((TiffTag)0x8c);  // Fall back
  }

  try {
    NikonDecompressor decompressor(mFile, mRaw);
    decompressor.uncorrectedRawValues = uncorrectedRawValues;
    ByteStream* metastream;
    if (getHostEndianness() == data[0]->endian)
      metastream = new ByteStream(meta->getData(), meta->count);
    else
      metastream = new ByteStreamSwap(meta->getData(), meta->count);

    decompressor.DecompressNikon(metastream, width, height, bitPerPixel, offsets->getInt(), counts->getInt());

    delete metastream;
  } catch (IOException &e) {
    mRaw->setError(e.what());
    // Let's ignore it, it may have delivered somewhat useful data.
  }

  return mRaw;
}

RawImage Cr2Decoder::decodeRawInternal() {
  if(hints.find("old_format") != hints.end()) {
    uint32 off = 0;
    if (mRootIFD->getEntryRecursive((TiffTag)0x81))
      off = mRootIFD->getEntryRecursive((TiffTag)0x81)->getInt();
    else {
      vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(CFAPATTERN);
      if (data.empty())
        ThrowRDE("CR2 Decoder: Couldn't find offset");
      else {
        if (data[0]->hasEntry(STRIPOFFSETS))
          off = data[0]->getEntry(STRIPOFFSETS)->getInt();
        else
          ThrowRDE("CR2 Decoder: Couldn't find offset");
      }
    }

    ByteStream *b;
    if (getHostEndianness() == big)
      b = new ByteStream(mFile, off+41);
    else
      b = new ByteStreamSwap(mFile, off+41);
    uint32 height = b->getShort();
    uint32 width = b->getShort();

    // Every two lines can be encoded as a single line, probably to try and get
    // better compression by getting the same RGBG sequence in every line
    if(hints.find("double_line_ljpeg") != hints.end()) {
      height *= 2;
      mRaw->dim = iPoint2D(width*2, height/2);
    }
    else {
      width *= 2;
      mRaw->dim = iPoint2D(width, height);
    }

    mRaw->createData();
    LJpegPlain *l = new LJpegPlain(mFile, mRaw);
    try {
      l->startDecoder(off, mFile->getSize()-off, 0, 0);
    } catch (IOException& e) {
      mRaw->setError(e.what());
    }

    delete l;

    if(hints.find("double_line_ljpeg") != hints.end()) {
      // We now have a double width half height image we need to convert to the
      // normal format
      iPoint2D final_size(width, height);
      RawImage procRaw = RawImage::create(final_size, TYPE_USHORT16, 1);
      procRaw->metadata = mRaw->metadata;
      procRaw->copyErrorsFrom(mRaw);

      for (uint32 y = 0; y < height; y++) {
        ushort16 *dst = (ushort16*)procRaw->getData(0,y);
        ushort16 *src = (ushort16*)mRaw->getData(y%2 == 0 ? 0 : width, y/2);
        for (uint32 x = 0; x < width; x++)
          dst[x] = src[x];
      }
      mRaw = procRaw;
    }

    if (mRootIFD->getEntryRecursive((TiffTag)0x123)) {
      TiffEntry *curve = mRootIFD->getEntryRecursive((TiffTag)0x123);
      if (curve->type == TIFF_SHORT && curve->count == 4096) {
        TiffEntry *linearization = mRootIFD->getEntryRecursive((TiffTag)0x123);
        uint32 len = linearization->count;
        ushort16 *table = new ushort16[len];
        linearization->getShortArray(table, len);
        if (!uncorrectedRawValues) {
          mRaw->setTable(table, 4096, true);
          // Apply table
          mRaw->sixteenBitLookup();
          // Delete table
          mRaw->setTable(NULL);
        } else {
          // We want uncorrected, but we store the table.
          mRaw->setTable(table, 4096, false);
        }
      }
    }

    return mRaw;
  }

  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag((TiffTag)0xc5d8);

  if (data.empty())
    ThrowRDE("CR2 Decoder: No image data found");


  TiffIFD* raw = data[0];
  mRaw = RawImage::create();
  mRaw->isCFA = true;
  vector<Cr2Slice> slices;
  int completeH = 0;
  bool doubleHeight = false;

  try {
//.........这里部分代码省略.........

RawImage NefDecoder::decodeRawInternal() {
  vector<TiffIFD*> data = mRootIFD->getIFDsWithTag(CFAPATTERN);

  if (data.empty())
    ThrowRDE("NEF Decoder: No image data found");

  TiffIFD* raw = data[0];
  int compression = raw->getEntry(COMPRESSION)->getInt();

  data = mRootIFD->getIFDsWithTag(MODEL);

  if (data.empty())
    ThrowRDE("NEF Decoder: No model data found");

  TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
  TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);

  if (!data[0]->getEntry(MODEL)->getString().compare("NIKON D100 ")) {  /**Sigh**/
    if (!mFile->isValid(offsets->getInt()))
      ThrowRDE("NEF Decoder: Image data outside of file.");
    if (!D100IsCompressed(offsets->getInt())) {
      DecodeD100Uncompressed();
      return mRaw;
    }
  }

  if (compression == 1) {
    DecodeUncompressed();
    return mRaw;
  }

  if (offsets->count != 1) {
    ThrowRDE("NEF Decoder: Multiple Strips found: %u", offsets->count);
  }
  if (counts->count != offsets->count) {
    ThrowRDE("NEF Decoder: Byte count number does not match strip size: count:%u, strips:%u ", counts->count, offsets->count);
  }
  if (!mFile->isValid(offsets->getInt() + counts->getInt()))
    ThrowRDE("NEF Decoder: Invalid strip byte count. File probably truncated.");


  if (34713 != compression)
    ThrowRDE("NEF Decoder: Unsupported compression");

  uint32 width = raw->getEntry(IMAGEWIDTH)->getInt();
  uint32 height = raw->getEntry(IMAGELENGTH)->getInt();
  uint32 bitPerPixel = raw->getEntry(BITSPERSAMPLE)->getInt();

  mRaw->dim = iPoint2D(width, height);
  mRaw->createData();

  data = mRootIFD->getIFDsWithTag(MAKERNOTE);
  if (data.empty())
    ThrowRDE("NEF Decoder: No EXIF data found");

  TiffIFD* exif = data[0];
  TiffEntry *makernoteEntry = exif->getEntry(MAKERNOTE);
  const uchar8* makernote = makernoteEntry->getData();
  FileMap makermap((uchar8*)&makernote[10], mFile->getSize() - makernoteEntry->getDataOffset() - 10);
  TiffParser makertiff(&makermap);
  makertiff.parseData();

  data = makertiff.RootIFD()->getIFDsWithTag((TiffTag)0x8c);

  if (data.empty())
    ThrowRDE("NEF Decoder: Decompression info tag not found");

  TiffEntry *meta;
  try {
    meta = data[0]->getEntry((TiffTag)0x96);
  } catch (TiffParserException) {
    meta = data[0]->getEntry((TiffTag)0x8c);  // Fall back
  }

  try {
    NikonDecompressor decompressor(mFile, mRaw);

    ByteStream* metastream;
    if (getHostEndianness() == data[0]->endian)
      metastream = new ByteStream(meta->getData(), meta->count);
    else
      metastream = new ByteStreamSwap(meta->getData(), meta->count);

    decompressor.DecompressNikon(metastream, width, height, bitPerPixel, offsets->getInt(), counts->getInt());

    delete metastream;
  } catch (IOException &e) {
    mRaw->setError(e.what());
    // Let's ignore it, it may have delivered somewhat useful data.
  }

  return mRaw;
}