content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    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
   *
   *        https://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.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  package com.drew.metadata.mov.atoms;
  
  import com.drew.lang.SequentialReader;
  import com.drew.metadata.mov.media.QuickTimeSoundDirectory;
  
  import java.io.IOException;
  
  /**
   * https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-25647
   *
   * @author Payton Garland
   */
  public class SoundInformationMediaHeaderAtom extends FullAtom
  {
      int balance;
  
      public SoundInformationMediaHeaderAtom(SequentialReader reader, Atom atom) throws IOException
      {
          super(reader, atom);
  
          balance = reader.getInt16();
          reader.skip(2); // Reserved
      }
  
      public void addMetadata(QuickTimeSoundDirectory directory)
      {
          double integerPortion = balance & 0xFFFF0000;
          double fractionPortion = (balance & 0x0000FFFF) / Math.pow(2, 4);
          directory.setDouble(QuickTimeSoundDirectory.TAG_SOUND_BALANCE, integerPortion + fractionPortion);
      }
  }
  