Adding Java wrapper for DtmfSender.

webrtc/sdk/android/api/org/webrtc/RtpSender.java

 /*
  *  Copyright 2015 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;
 
 /** Java wrapper for a C++ RtpSenderInterface. */
 public class RtpSender {
   final long nativeRtpSender;
 
   private MediaStreamTrack cachedTrack;
   private boolean ownsTrack = true;
 
+  private final DtmfSender dtmfSender;
+
   public RtpSender(long nativeRtpSender) {
     this.nativeRtpSender = nativeRtpSender;
     long track = nativeGetTrack(nativeRtpSender);
     // It may be possible for an RtpSender to be created without a track.
-    cachedTrack = (track == 0) ? null : new MediaStreamTrack(track);
+    cachedTrack = (track != 0) ? new MediaStreamTrack(track) : null;
+
+    long nativeDtmfSender = nativeGetDtmfSender(nativeRtpSender);
+    dtmfSender = (nativeDtmfSender != 0) ? new DtmfSender(nativeDtmfSender) : null;
   }
 
   // If |takeOwnership| is true, the RtpSender takes ownership of the track
   // from the caller, and will auto-dispose of it when no longer needed.
   // |takeOwnership| should only be used if the caller owns the track; it is
   // not appropriate when the track is owned by, for example, another RtpSender
   // or a MediaStream.
   public boolean setTrack(MediaStreamTrack track, boolean takeOwnership) {
     if (!nativeSetTrack(nativeRtpSender, (track == null) ? 0 : track.nativeTrack)) {
       return false;
@@ skipping 15 matching lines @@
   }
 
   public RtpParameters getParameters() {
     return nativeGetParameters(nativeRtpSender);
   }
 
   public String id() {
     return nativeId(nativeRtpSender);
   }
 
+  public DtmfSender dtmf() {
+    return dtmfSender;
+  }
+
   public void dispose() {
+    if (dtmfSender != null) {
+      dtmfSender.dispose();
+    }
     if (cachedTrack != null && ownsTrack) {
       cachedTrack.dispose();
     }
     free(nativeRtpSender);
   }
 
   private static native boolean nativeSetTrack(long nativeRtpSender, long nativeTrack);
 
   // This should increment the reference count of the track.
   // Will be released in dispose() or setTrack().
   private static native long nativeGetTrack(long nativeRtpSender);
 
+  // This should increment the reference count of the DTMF sender.
+  // Will be released in dispose().
+  private static native long nativeGetDtmfSender(long nativeRtpSender);
+
   private static native boolean nativeSetParameters(long nativeRtpSender, RtpParameters parameters);
 
   private static native RtpParameters nativeGetParameters(long nativeRtpSender);
 
   private static native String nativeId(long nativeRtpSender);
 
   private static native void free(long nativeRtpSender);
 };