1 files changed, 76 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/android/api/org/webrtc/VideoTrack.java b/third_party/libwebrtc/sdk/android/api/org/webrtc/VideoTrack.java
new file mode 100644
index 0000000000..5593d424f3
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+++ b/third_party/libwebrtc/sdk/android/api/org/webrtc/VideoTrack.java
@@ -0,0 +1,76 @@
+/*
+ *  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.IdentityHashMap;
+
+/** Java version of VideoTrackInterface. */
+public class VideoTrack extends MediaStreamTrack {
+  private final IdentityHashMap<VideoSink, Long> sinks = new IdentityHashMap<VideoSink, Long>();
+
+  public VideoTrack(long nativeTrack) {
+    super(nativeTrack);
+  }
+
+  /**
+   * Adds a VideoSink to the track.
+   *
+   * A track can have any number of VideoSinks. VideoSinks will replace
+   * renderers. However, converting old style texture frames will involve costly
+   * conversion to I420 so it is not recommended to upgrade before all your
+   * sources produce VideoFrames.
+   */
+  public void addSink(VideoSink sink) {
+    if (sink == null) {
+      throw new IllegalArgumentException("The VideoSink is not allowed to be null");
+    }
+    // We allow calling addSink() with the same sink multiple times. This is similar to the C++
+    // VideoTrack::AddOrUpdateSink().
+    if (!sinks.containsKey(sink)) {
+      final long nativeSink = nativeWrapSink(sink);
+      sinks.put(sink, nativeSink);
+      nativeAddSink(getNativeMediaStreamTrack(), nativeSink);
+    }
+  }
+
+  /**
+   * Removes a VideoSink from the track.
+   *
+   * If the VideoSink was not attached to the track, this is a no-op.
+   */
+  public void removeSink(VideoSink sink) {
+    final Long nativeSink = sinks.remove(sink);
+    if (nativeSink != null) {
+      nativeRemoveSink(getNativeMediaStreamTrack(), nativeSink);
+      nativeFreeSink(nativeSink);
+    }
+  }
+
+  @Override
+  public void dispose() {
+    for (long nativeSink : sinks.values()) {
+      nativeRemoveSink(getNativeMediaStreamTrack(), nativeSink);
+      nativeFreeSink(nativeSink);
+    }
+    sinks.clear();
+    super.dispose();
+  }
+
+  /** Returns a pointer to webrtc::VideoTrackInterface. */
+  long getNativeVideoTrack() {
+    return getNativeMediaStreamTrack();
+  }
+
+  private static native void nativeAddSink(long track, long nativeSink);
+  private static native void nativeRemoveSink(long track, long nativeSink);
+  private static native long nativeWrapSink(VideoSink sink);
+  private static native void nativeFreeSink(long sink);
+}