content: /*
   * Copyright 2021 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.
   */
  package com.google.android.exoplayer2.text;
  
  import android.os.Bundle;
  import android.os.Parcel;
  import com.google.android.exoplayer2.util.Assertions;
  import com.google.android.exoplayer2.util.BundleableUtil;
  import com.google.common.collect.ImmutableList;
  import java.util.ArrayList;
  
  /** Decodes data encoded by {@link CueEncoder}. */
  public final class CueDecoder {
  
    // key under which list of cues is saved in the bundle
    static final String BUNDLED_CUES = "c";
  
    /**
     * Decodes byte array into list of {@link Cue} objects.
     *
     * @param bytes byte array produced by {@link CueEncoder}
     * @return decoded list of {@link Cue} objects.
     */
    public ImmutableList<Cue> decode(byte[] bytes) {
      Parcel parcel = Parcel.obtain();
      parcel.unmarshall(bytes, 0, bytes.length);
      parcel.setDataPosition(0);
      Bundle bundle = parcel.readBundle(Bundle.class.getClassLoader());
      parcel.recycle();
      ArrayList<Bundle> bundledCues =
          Assertions.checkNotNull(bundle.getParcelableArrayList(BUNDLED_CUES));
  
      return BundleableUtil.fromBundleList(Cue.CREATOR, bundledCues);
    }
  }
  