Method decodeMetaDataInternal

src/librawspeed/decoders/Rw2Decoder.cpp:192–269

}

void Rw2Decoder::decodeMetaDataInternal(const CameraMetaData* meta) {
  parseCFA();

  auto id = mRootIFD->getID();
  string mode = guessMode();
  int iso = 0;
  if (mRootIFD->hasEntryRecursive(PANASONIC_ISO_SPEED))
    iso = mRootIFD->getEntryRecursive(PANASONIC_ISO_SPEED)->getU32();

  if (this->checkCameraSupported(meta, id, mode)) {
    setMetaData(meta, id, mode, iso);
  } else {
    mRaw->metadata.mode = mode;
    writeLog(DEBUG_PRIO_EXTRA, "Mode not found in DB: %s", mode.c_str());
    setMetaData(meta, id, "", iso);
  }

  const TiffIFD* raw = mRootIFD->hasEntryRecursive(PANASONIC_STRIPOFFSET)
                           ? mRootIFD->getIFDWithTag(PANASONIC_STRIPOFFSET)
                           : mRootIFD->getIFDWithTag(STRIPOFFSETS);

  // Read blacklevels
  if (raw->hasEntry(static_cast<TiffTag>(0x1c)) &&
      raw->hasEntry(static_cast<TiffTag>(0x1d)) &&
      raw->hasEntry(static_cast<TiffTag>(0x1e))) {
    const auto getBlack = [&raw](TiffTag t) -> int {
      const auto val = raw->getEntry(t)->getU32();
      int out;
      if (__builtin_sadd_overflow(val, 15, &out))
        ThrowRDE("Integer overflow when calculating black level");
      return out;
    };

    const int blackRed = getBlack(static_cast<TiffTag>(0x1c));
    const int blackGreen = getBlack(static_cast<TiffTag>(0x1d));
    const int blackBlue = getBlack(static_cast<TiffTag>(0x1e));

    for(int i = 0; i < 2; i++) {
      for(int j = 0; j < 2; j++) {
        const int k = i + 2 * j;
        const CFAColor c = mRaw->cfa.getColorAt(i, j);
        switch (c) {
          case CFA_RED:
            mRaw->blackLevelSeparate[k] = blackRed;
            break;
          case CFA_GREEN:
            mRaw->blackLevelSeparate[k] = blackGreen;
            break;
          case CFA_BLUE:
            mRaw->blackLevelSeparate[k] = blackBlue;
            break;
          default:
            ThrowRDE("Unexpected CFA color %s.",
                     ColorFilterArray::colorToString(c).c_str());
        }
      }
    }
  }