| /* |
| * 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 wrapper for a C++ MediaStreamInterface. */ |
| public class MediaStream { |
| public final LinkedList<AudioTrack> audioTracks; |
| public final LinkedList<VideoTrack> videoTracks; |
| public final LinkedList<VideoTrack> preservedVideoTracks; |
| // Package-protected for PeerConnection. |
| final long nativeStream; |
| |
| public MediaStream(long nativeStream) { |
| audioTracks = new LinkedList<AudioTrack>(); |
| videoTracks = new LinkedList<VideoTrack>(); |
| preservedVideoTracks = new LinkedList<VideoTrack>(); |
| this.nativeStream = nativeStream; |
| } |
| |
| public boolean addTrack(AudioTrack track) { |
| if (nativeAddAudioTrack(nativeStream, track.nativeTrack)) { |
| audioTracks.add(track); |
| return true; |
| } |
| return false; |
| } |
| |
| public boolean addTrack(VideoTrack track) { |
| if (nativeAddVideoTrack(nativeStream, track.nativeTrack)) { |
| videoTracks.add(track); |
| return true; |
| } |
| return false; |
| } |
| |
| // Tracks added in addTrack() call will be auto released once MediaStream.dispose() |
| // is called. If video track need to be preserved after MediaStream is destroyed it |
| // should be added to MediaStream using addPreservedTrack() call. |
| public boolean addPreservedTrack(VideoTrack track) { |
| if (nativeAddVideoTrack(nativeStream, track.nativeTrack)) { |
| preservedVideoTracks.add(track); |
| return true; |
| } |
| return false; |
| } |
| |
| public boolean removeTrack(AudioTrack track) { |
| audioTracks.remove(track); |
| return nativeRemoveAudioTrack(nativeStream, track.nativeTrack); |
| } |
| |
| public boolean removeTrack(VideoTrack track) { |
| videoTracks.remove(track); |
| preservedVideoTracks.remove(track); |
| return nativeRemoveVideoTrack(nativeStream, track.nativeTrack); |
| } |
| |
| public void dispose() { |
| // Remove and release previously added audio and video tracks. |
| while (!audioTracks.isEmpty()) { |
| AudioTrack track = audioTracks.getFirst(); |
| removeTrack(track); |
| track.dispose(); |
| } |
| while (!videoTracks.isEmpty()) { |
| VideoTrack track = videoTracks.getFirst(); |
| removeTrack(track); |
| track.dispose(); |
| } |
| // Remove, but do not release preserved video tracks. |
| while (!preservedVideoTracks.isEmpty()) { |
| removeTrack(preservedVideoTracks.getFirst()); |
| } |
| free(nativeStream); |
| } |
| |
| public String label() { |
| return nativeLabel(nativeStream); |
| } |
| |
| @Override |
| public String toString() { |
| return "[" + label() + ":A=" + audioTracks.size() + ":V=" + videoTracks.size() + "]"; |
| } |
| |
| private static native boolean nativeAddAudioTrack(long nativeStream, long nativeAudioTrack); |
| |
| private static native boolean nativeAddVideoTrack(long nativeStream, long nativeVideoTrack); |
| |
| private static native boolean nativeRemoveAudioTrack(long nativeStream, long nativeAudioTrack); |
| |
| private static native boolean nativeRemoveVideoTrack(long nativeStream, long nativeVideoTrack); |
| |
| private static native String nativeLabel(long nativeStream); |
| |
| private static native void free(long nativeStream); |
| } |