mirror of
https://github.com/nextcloud/talk-android
synced 2025-06-20 20:19:42 +01:00
456 lines
18 KiB
Java
456 lines
18 KiB
Java
/*
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* Nextcloud Talk application
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*
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* @author Mario Danic
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* @author Tim Krüger
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* Copyright (C) 2022 Tim Krüger <t@timkrueger.me>
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* Copyright (C) 2017 Mario Danic <mario@lovelyhq.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package com.nextcloud.talk.webrtc;
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import android.content.Context;
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import android.text.TextUtils;
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import android.util.Log;
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import com.bluelinelabs.logansquare.LoganSquare;
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import com.nextcloud.talk.R;
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import com.nextcloud.talk.application.NextcloudTalkApplication;
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import com.nextcloud.talk.events.MediaStreamEvent;
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import com.nextcloud.talk.events.PeerConnectionEvent;
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import com.nextcloud.talk.events.SessionDescriptionSendEvent;
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import com.nextcloud.talk.events.WebSocketCommunicationEvent;
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import com.nextcloud.talk.models.json.signaling.DataChannelMessage;
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import com.nextcloud.talk.models.json.signaling.DataChannelMessageNick;
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import com.nextcloud.talk.models.json.signaling.NCIceCandidate;
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import org.greenrobot.eventbus.EventBus;
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import org.webrtc.AudioTrack;
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import org.webrtc.DataChannel;
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import org.webrtc.IceCandidate;
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import org.webrtc.MediaConstraints;
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import org.webrtc.MediaStream;
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import org.webrtc.PeerConnection;
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import org.webrtc.PeerConnectionFactory;
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import org.webrtc.RtpReceiver;
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import org.webrtc.SdpObserver;
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import org.webrtc.SessionDescription;
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import org.webrtc.VideoTrack;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Objects;
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import javax.inject.Inject;
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import androidx.annotation.Nullable;
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import autodagger.AutoInjector;
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import static java.lang.Boolean.FALSE;
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import static java.lang.Boolean.TRUE;
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@AutoInjector(NextcloudTalkApplication.class)
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public class MagicPeerConnectionWrapper {
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private static final String TAG = MagicPeerConnectionWrapper.class.getCanonicalName();
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private List<IceCandidate> iceCandidates = new ArrayList<>();
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private PeerConnection peerConnection;
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private String sessionId;
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private String nick;
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private final MediaConstraints mediaConstraints;
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private DataChannel dataChannel;
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private final MagicSdpObserver magicSdpObserver;
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private MediaStream remoteStream;
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private final boolean hasInitiated;
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private final MediaStream localStream;
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private final boolean isMCUPublisher;
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private final String videoStreamType;
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@Inject
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Context context;
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public MagicPeerConnectionWrapper(PeerConnectionFactory peerConnectionFactory,
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List<PeerConnection.IceServer> iceServerList,
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MediaConstraints mediaConstraints,
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String sessionId, String localSession, @Nullable MediaStream localStream,
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boolean isMCUPublisher, boolean hasMCU, String videoStreamType) {
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Objects.requireNonNull(NextcloudTalkApplication.Companion.getSharedApplication()).getComponentApplication().inject(this);
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this.localStream = localStream;
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this.videoStreamType = videoStreamType;
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this.sessionId = sessionId;
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this.mediaConstraints = mediaConstraints;
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magicSdpObserver = new MagicSdpObserver();
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hasInitiated = sessionId.compareTo(localSession) < 0;
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this.isMCUPublisher = isMCUPublisher;
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PeerConnection.RTCConfiguration configuration = new PeerConnection.RTCConfiguration(iceServerList);
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configuration.sdpSemantics = PeerConnection.SdpSemantics.UNIFIED_PLAN;
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peerConnection = peerConnectionFactory.createPeerConnection(configuration, new MagicPeerConnectionObserver());
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if (peerConnection != null) {
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if (this.localStream != null) {
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List<String> localStreamIds = Collections.singletonList(this.localStream.getId());
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for(AudioTrack track : this.localStream.audioTracks) {
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peerConnection.addTrack(track, localStreamIds);
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}
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for(VideoTrack track : this.localStream.videoTracks) {
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peerConnection.addTrack(track, localStreamIds);
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}
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}
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if (hasMCU || hasInitiated) {
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DataChannel.Init init = new DataChannel.Init();
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init.negotiated = false;
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dataChannel = peerConnection.createDataChannel("status", init);
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dataChannel.registerObserver(new MagicDataChannelObserver());
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if (isMCUPublisher) {
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peerConnection.createOffer(magicSdpObserver, mediaConstraints);
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} else if (hasMCU && this.videoStreamType.equals("video")) {
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// If the connection type is "screen" the client sharing the screen will send an
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// offer; offers should be requested only for videos.
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HashMap<String, String> hashMap = new HashMap<>();
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hashMap.put("sessionId", sessionId);
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EventBus.getDefault().post(new WebSocketCommunicationEvent("peerReadyForRequestingOffer", hashMap));
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} else if (!hasMCU && hasInitiated) {
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peerConnection.createOffer(magicSdpObserver, mediaConstraints);
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}
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}
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}
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}
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public String getVideoStreamType() {
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return videoStreamType;
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}
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public void removePeerConnection() {
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if (dataChannel != null) {
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dataChannel.dispose();
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dataChannel = null;
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Log.d(TAG, "Disposed DataChannel");
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} else {
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Log.d(TAG, "DataChannel is null.");
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}
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if (peerConnection != null) {
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peerConnection.close();
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peerConnection = null;
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Log.d(TAG, "Disposed PeerConnection");
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} else {
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Log.d(TAG, "PeerConnection is null.");
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}
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}
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public void drainIceCandidates() {
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if (peerConnection != null) {
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for (IceCandidate iceCandidate : iceCandidates) {
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peerConnection.addIceCandidate(iceCandidate);
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}
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iceCandidates = new ArrayList<>();
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}
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}
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public MagicSdpObserver getMagicSdpObserver() {
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return magicSdpObserver;
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}
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public void addCandidate(IceCandidate iceCandidate) {
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if (peerConnection != null && peerConnection.getRemoteDescription() != null) {
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peerConnection.addIceCandidate(iceCandidate);
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} else {
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iceCandidates.add(iceCandidate);
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}
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}
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public void sendNickChannelData(DataChannelMessageNick dataChannelMessage) {
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ByteBuffer buffer;
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if (dataChannel != null) {
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try {
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buffer = ByteBuffer.wrap(LoganSquare.serialize(dataChannelMessage).getBytes());
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dataChannel.send(new DataChannel.Buffer(buffer, false));
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} catch (IOException e) {
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Log.d(TAG, "Failed to send channel data, attempting regular " + dataChannelMessage);
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}
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}
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}
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public void sendChannelData(DataChannelMessage dataChannelMessage) {
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ByteBuffer buffer;
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if (dataChannel != null) {
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try {
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buffer = ByteBuffer.wrap(LoganSquare.serialize(dataChannelMessage).getBytes());
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dataChannel.send(new DataChannel.Buffer(buffer, false));
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} catch (IOException e) {
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Log.d(TAG, "Failed to send channel data, attempting regular " + dataChannelMessage);
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}
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}
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}
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public PeerConnection getPeerConnection() {
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return peerConnection;
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}
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public String getSessionId() {
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return sessionId;
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}
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public void setSessionId(String sessionId) {
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this.sessionId = sessionId;
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}
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public String getNick() {
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if (!TextUtils.isEmpty(nick)) {
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return nick;
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} else {
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return Objects.requireNonNull(NextcloudTalkApplication.Companion.getSharedApplication()).getString(R.string.nc_nick_guest);
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}
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}
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public void setNick(String nick) {
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this.nick = nick;
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}
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private void sendInitialMediaStatus() {
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if (localStream != null) {
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if (localStream.videoTracks.size() == 1 && localStream.videoTracks.get(0).enabled()) {
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sendChannelData(new DataChannelMessage("videoOn"));
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} else {
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sendChannelData(new DataChannelMessage("videoOff"));
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}
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if (localStream.audioTracks.size() == 1 && localStream.audioTracks.get(0).enabled()) {
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sendChannelData(new DataChannelMessage("audioOn"));
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} else {
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sendChannelData(new DataChannelMessage("audioOff"));
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}
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}
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}
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public boolean isMCUPublisher() {
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return isMCUPublisher;
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}
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private class MagicDataChannelObserver implements DataChannel.Observer {
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@Override
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public void onBufferedAmountChange(long l) {
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}
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@Override
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public void onStateChange() {
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if (dataChannel != null && dataChannel.state().equals(DataChannel.State.OPEN) &&
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dataChannel.label().equals("status")) {
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sendInitialMediaStatus();
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}
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}
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@Override
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public void onMessage(DataChannel.Buffer buffer) {
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if (buffer.binary) {
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Log.d(TAG, "Received binary msg over " + TAG + " " + sessionId);
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return;
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}
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ByteBuffer data = buffer.data;
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final byte[] bytes = new byte[data.capacity()];
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data.get(bytes);
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String strData = new String(bytes);
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Log.d(TAG, "Got msg: " + strData + " over " + TAG + " " + sessionId);
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try {
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DataChannelMessage dataChannelMessage = LoganSquare.parse(strData, DataChannelMessage.class);
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String internalNick;
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if ("nickChanged".equals(dataChannelMessage.getType())) {
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if (dataChannelMessage.getPayload() instanceof String) {
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internalNick = (String) dataChannelMessage.getPayload();
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if (!internalNick.equals(nick)) {
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setNick(internalNick);
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.NICK_CHANGE, sessionId, getNick(), null, videoStreamType));
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}
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} else {
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if (dataChannelMessage.getPayload() != null) {
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HashMap<String, String> payloadHashMap = (HashMap<String, String>) dataChannelMessage.getPayload();
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.NICK_CHANGE, sessionId, payloadHashMap.get("name"), null, videoStreamType));
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}
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}
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} else if ("audioOn".equals(dataChannelMessage.getType())) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.AUDIO_CHANGE, sessionId, null, TRUE, videoStreamType));
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} else if ("audioOff".equals(dataChannelMessage.getType())) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.AUDIO_CHANGE, sessionId, null, FALSE, videoStreamType));
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} else if ("videoOn".equals(dataChannelMessage.getType())) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.VIDEO_CHANGE, sessionId, null, TRUE, videoStreamType));
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} else if ("videoOff".equals(dataChannelMessage.getType())) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.VIDEO_CHANGE, sessionId, null, FALSE, videoStreamType));
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}
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} catch (IOException e) {
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Log.d(TAG, "Failed to parse data channel message");
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}
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}
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}
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private class MagicPeerConnectionObserver implements PeerConnection.Observer {
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@Override
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public void onSignalingChange(PeerConnection.SignalingState signalingState) {
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}
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@Override
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public void onIceConnectionChange(PeerConnection.IceConnectionState iceConnectionState) {
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Log.d("iceConnectionChangeTo: ", iceConnectionState.name() + " over " + peerConnection.hashCode() + " " + sessionId);
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if (iceConnectionState.equals(PeerConnection.IceConnectionState.CONNECTED)) {
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if (!isMCUPublisher) {
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EventBus.getDefault().post(new MediaStreamEvent(remoteStream, sessionId, videoStreamType));
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}
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if (hasInitiated) {
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sendInitialMediaStatus();
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}
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} else if (iceConnectionState.equals(PeerConnection.IceConnectionState.CLOSED)) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType
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.PEER_CLOSED, sessionId, null, null, videoStreamType));
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} else if (iceConnectionState.equals(PeerConnection.IceConnectionState.FAILED)) {
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if (isMCUPublisher) {
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EventBus.getDefault().post(new PeerConnectionEvent(PeerConnectionEvent.PeerConnectionEventType.PUBLISHER_FAILED, sessionId, null, null, null));
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}
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}
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}
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@Override
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public void onIceConnectionReceivingChange(boolean b) {
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}
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@Override
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public void onIceGatheringChange(PeerConnection.IceGatheringState iceGatheringState) {
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}
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@Override
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public void onIceCandidate(IceCandidate iceCandidate) {
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NCIceCandidate ncIceCandidate = new NCIceCandidate();
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ncIceCandidate.setSdpMid(iceCandidate.sdpMid);
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ncIceCandidate.setSdpMLineIndex(iceCandidate.sdpMLineIndex);
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ncIceCandidate.setCandidate(iceCandidate.sdp);
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EventBus.getDefault().post(new SessionDescriptionSendEvent(null, sessionId,
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"candidate", ncIceCandidate, videoStreamType));
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}
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@Override
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public void onIceCandidatesRemoved(IceCandidate[] iceCandidates) {
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}
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@Override
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public void onAddStream(MediaStream mediaStream) {
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remoteStream = mediaStream;
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}
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@Override
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public void onRemoveStream(MediaStream mediaStream) {
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if (!isMCUPublisher) {
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EventBus.getDefault().post(new MediaStreamEvent(null, sessionId, videoStreamType));
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}
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}
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@Override
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public void onDataChannel(DataChannel dataChannel) {
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if (dataChannel.label().equals("status") || dataChannel.label().equals("JanusDataChannel")) {
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MagicPeerConnectionWrapper.this.dataChannel = dataChannel;
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MagicPeerConnectionWrapper.this.dataChannel.registerObserver(new MagicDataChannelObserver());
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}
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}
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@Override
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public void onRenegotiationNeeded() {
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}
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@Override
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public void onAddTrack(RtpReceiver rtpReceiver, MediaStream[] mediaStreams) {
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}
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}
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private class MagicSdpObserver implements SdpObserver {
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private static final String TAG = "MagicSdpObserver";
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@Override
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public void onCreateFailure(String s) {
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Log.d(TAG, "SDPObserver createFailure: " + s + " over " + peerConnection.hashCode() + " " + sessionId);
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}
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@Override
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public void onSetFailure(String s) {
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Log.d(TAG,"SDPObserver setFailure: " + s + " over " + peerConnection.hashCode() + " " + sessionId);
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}
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@Override
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public void onCreateSuccess(SessionDescription sessionDescription) {
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SessionDescription sessionDescriptionWithPreferredCodec;
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String sessionDescriptionStringWithPreferredCodec = MagicWebRTCUtils.preferCodec
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(sessionDescription.description,
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"H264", false);
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sessionDescriptionWithPreferredCodec = new SessionDescription(
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sessionDescription.type,
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sessionDescriptionStringWithPreferredCodec);
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EventBus.getDefault().post(new SessionDescriptionSendEvent(sessionDescriptionWithPreferredCodec, sessionId,
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sessionDescription.type.canonicalForm().toLowerCase(), null, videoStreamType));
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if (peerConnection != null) {
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peerConnection.setLocalDescription(magicSdpObserver, sessionDescriptionWithPreferredCodec);
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}
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}
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@Override
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public void onSetSuccess() {
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if (peerConnection != null) {
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if (peerConnection.getLocalDescription() == null) {
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peerConnection.createAnswer(magicSdpObserver, mediaConstraints);
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}
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if (peerConnection.getRemoteDescription() != null) {
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drainIceCandidates();
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}
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}
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}
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}
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} |