talk/app/webrtc/java/src/org/webrtc/RtpReceiver.java

/*
 * libjingle
 * Copyright 2015 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 */

package org.webrtc;

/** Java wrapper for a C++ RtpReceiverInterface. */
public class RtpReceiver {
  final long nativeRtpReceiver;

  private MediaStreamTrack cachedTrack;

  public RtpReceiver(long nativeRtpReceiver) {
    this.nativeRtpReceiver = nativeRtpReceiver;
    long track = nativeGetTrack(nativeRtpReceiver);
    // We can assume that an RtpReceiver always has an associated track.
    cachedTrack = new MediaStreamTrack(track);
  }

  public MediaStreamTrack track() {
    return cachedTrack;
  }

  public String id() {
    return nativeId(nativeRtpReceiver);
  }

  public void dispose() {
    cachedTrack.dispose();
    free(nativeRtpReceiver);
  }

  // This should increment the reference count of the track.
  // Will be released in dispose().
  private static native long nativeGetTrack(long nativeRtpReceiver);

  private static native String nativeId(long nativeRtpReceiver);

  private static native void free(long nativeRtpReceiver);
};