TrackSupport.java

/**
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community 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://opensource.org/licenses/ecl2.txt
 *
 * 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 org.opencastproject.mediapackage;

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;

/**
 * Utility class for handling {@link org.opencastproject.mediapackage.Track}s and
 * {@link org.opencastproject.mediapackage.Stream}s.
 */
public final class TrackSupport {

  private TrackSupport() {
  }

  @SuppressWarnings("unchecked")
  public static <T extends Stream> T[] byType(Stream[] streams, Class<T> streamType) {
    List<Stream> f = new ArrayList<Stream>();
    for (Stream s : streams) {
      if (streamType.isAssignableFrom(s.getClass()))
        f.add(s);
    }
    return f.toArray((T[]) Array.newInstance(streamType, f.size()));
  }

}