webrtc/api/android/java/src/org/webrtc/VideoTrack.java

/*
 *  Copyright 2013 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

package org.webrtc;

import java.util.LinkedList;

/** Java version of VideoTrackInterface. */
public class VideoTrack extends MediaStreamTrack {
  private final LinkedList<VideoRenderer> renderers =
      new LinkedList<VideoRenderer>();

  public VideoTrack(long nativeTrack) {
    super(nativeTrack);
  }

  public void addRenderer(VideoRenderer renderer) {
    renderers.add(renderer);
    nativeAddRenderer(nativeTrack, renderer.nativeVideoRenderer);
  }

  public void removeRenderer(VideoRenderer renderer) {
    if (!renderers.remove(renderer)) {
      return;
    }
    nativeRemoveRenderer(nativeTrack, renderer.nativeVideoRenderer);
    renderer.dispose();
  }

  public void dispose() {
    while (!renderers.isEmpty()) {
      removeRenderer(renderers.getFirst());
    }
    super.dispose();
  }

  private static native void free(long nativeTrack);

  private static native void nativeAddRenderer(
      long nativeTrack, long nativeRenderer);

  private static native void nativeRemoveRenderer(
      long nativeTrack, long nativeRenderer);
}