SmilMediaElement.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.smil.entity.media.element.api;

import org.opencastproject.smil.api.SmilException;
import org.opencastproject.smil.entity.media.api.SmilMediaObject;
import org.opencastproject.smil.entity.media.param.api.SmilMediaParam;

import java.net.URI;
import java.util.List;

/**
 * Represent a media element like {@code audio}, {@code video},...
 */
public interface SmilMediaElement extends SmilMediaObject {

  /**
   * SMIL media element type.
   */
  enum MediaType {
    AUDIO, VIDEO, IMAGE, REF
  }

  /**
   * Returns clip start position.
   *
   * @return the clipBegin
   */
  String getClipBegin();

  /**
   * Returns clip end position.
   *
   * @return the clipEnd
   */
  String getClipEnd();

  /**
   * Returns media element type.
   *
   * @return this media element type
   */
  MediaType getMediaType();

  /**
   * Returns SmilMediaParamGroup Id given with this element.
   *
   * @return the paramGroup Id
   */
  String getParamGroup();

  /**
   * Returns {@link SmilMediaParam}s for this media element. The {@link List} is
   * immutable, use SmilService to modify it.
   *
   * @return the {@link List} with {@link SmilMediaParam}s
   */
  List<SmilMediaParam> getParams();

  /**
   * Returns media source URI.
   *
   * @return the media src URI
   */
  URI getSrc();

  /**
   * Returns clip start position in milliseconds.
   *
   * @throws SmilException if clip begin position can't parsed.
   * @return clip start position in milliseconds
   */
  long getClipBeginMS() throws SmilException;

  /**
   * Returns clip end position in milliseconds.
   *
   * @throws SmilException if clip end position can't parsed.
   * @return clip end position in milliseconds
   */
  long getClipEndMS() throws SmilException;
}