1 /*
2  * libjingle
3  * Copyright 2013 Google Inc.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  *  1. Redistributions of source code must retain the above copyright notice,
9  *     this list of conditions and the following disclaimer.
10  *  2. Redistributions in binary form must reproduce the above copyright notice,
11  *     this list of conditions and the following disclaimer in the documentation
12  *     and/or other materials provided with the distribution.
13  *  3. The name of the author may not be used to endorse or promote products
14  *     derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 package org.webrtc;
29 
30 import java.util.LinkedList;
31 
32 /** Java version of VideoTrackInterface. */
33 public class VideoTrack extends MediaStreamTrack {
34   private final LinkedList<VideoRenderer> renderers =
35       new LinkedList<VideoRenderer>();
36 
VideoTrack(long nativeTrack)37   public VideoTrack(long nativeTrack) {
38     super(nativeTrack);
39   }
40 
addRenderer(VideoRenderer renderer)41   public void addRenderer(VideoRenderer renderer) {
42     renderers.add(renderer);
43     nativeAddRenderer(nativeTrack, renderer.nativeVideoRenderer);
44   }
45 
removeRenderer(VideoRenderer renderer)46   public void removeRenderer(VideoRenderer renderer) {
47     if (!renderers.remove(renderer)) {
48       return;
49     }
50     nativeRemoveRenderer(nativeTrack, renderer.nativeVideoRenderer);
51     renderer.dispose();
52   }
53 
dispose()54   public void dispose() {
55     while (!renderers.isEmpty()) {
56       removeRenderer(renderers.getFirst());
57     }
58     super.dispose();
59   }
60 
free(long nativeTrack)61   private static native void free(long nativeTrack);
62 
nativeAddRenderer( long nativeTrack, long nativeRenderer)63   private static native void nativeAddRenderer(
64       long nativeTrack, long nativeRenderer);
65 
nativeRemoveRenderer( long nativeTrack, long nativeRenderer)66   private static native void nativeRemoveRenderer(
67       long nativeTrack, long nativeRenderer);
68 }
69