省略开启本机摄像头的过程
以下和WebSocket通信的时候，是通过Gson转对象为字符串的方式传输的数据
- 整个过程
- layout_rtc.xml
xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/dp_20"
>
<org.webrtc.SurfaceViewRenderer
android:id="@+id/localView"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<org.webrtc.SurfaceViewRenderer
android:id="@+id/remoteView"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
/>
</androidx.constraintlayout.widget.ConstraintLayout>- RtcActivity
java
package com.dream.app.activity;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import androidx.annotation.Nullable;
import com.dream.app.adapter.PeerConnectionAdapter;
import com.dream.app.adapter.SdpAdapter;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;
import org.webrtc.Camera1Enumerator;
import org.webrtc.DefaultVideoDecoderFactory;
import org.webrtc.DefaultVideoEncoderFactory;
import org.webrtc.EglBase;
import org.webrtc.IceCandidate;
import org.webrtc.MediaConstraints;
import org.webrtc.MediaStream;
import org.webrtc.PeerConnection;
import org.webrtc.PeerConnectionFactory;
import org.webrtc.SessionDescription;
import org.webrtc.SurfaceTextureHelper;
import org.webrtc.SurfaceViewRenderer;
import org.webrtc.VideoCapturer;
import org.webrtc.VideoSource;
import org.webrtc.VideoTrack;
import java.lang.reflect.Type;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collections;
import java.util.Random;
public class RtcActivity extends Activity {
private static final String TAG = "RtcRemoteActivity";
private WebSocketClient webSocketClient = null;
private PeerConnection peerConnection = null;
private static final Type sessionDescriptionType = new TypeToken<SessionDescription>(){}.getType();
private static final Type iceCandidateType = new TypeToken<IceCandidate>(){}.getType();
private VideoTrack videoTrack;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_rtc);
// factory static init
PeerConnectionFactory.initialize(PeerConnectionFactory.InitializationOptions
.builder(this)
.createInitializationOptions());
EglBase.Context eglBaseContext = EglBase.create().getEglBaseContext();
PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
// create video encoder/decoder
DefaultVideoEncoderFactory defaultVideoEncoderFactory =
new DefaultVideoEncoderFactory(eglBaseContext, true, true); // encoder
DefaultVideoDecoderFactory defaultVideoDecoderFactory =
new DefaultVideoDecoderFactory(eglBaseContext); // decoder
// factory create
PeerConnectionFactory peerConnectionFactory = PeerConnectionFactory.builder()
.setOptions(options)
.setVideoEncoderFactory(defaultVideoEncoderFactory)
.setVideoDecoderFactory(defaultVideoDecoderFactory)
.createPeerConnectionFactory();
// create videoCapturer
Camera1Enumerator camera1Enumerator = new Camera1Enumerator(false);// false输出到surface
String[] deviceNames = camera1Enumerator.getDeviceNames();
VideoCapturer videoCapturer = null;
for (String deviceName : deviceNames) {
if (camera1Enumerator.isFrontFacing(deviceName)) {
VideoCapturer capturer = camera1Enumerator.createCapturer(deviceName, null);
if (capturer != null) {
videoCapturer = capturer;
break;
}
Log.e(TAG, "onCreate: create capturer fail");
return;
}
}
if (videoCapturer == null) {
Log.e(TAG, "onCreate: create capturer fail");
return;
}
// create videoSource
VideoSource videoSource = peerConnectionFactory.createVideoSource(videoCapturer.isScreencast());
// init videoCapturer
SurfaceTextureHelper surfaceTextureHelper = SurfaceTextureHelper.create("surfaceTexture", eglBaseContext);
videoCapturer.initialize(surfaceTextureHelper, this, videoSource.getCapturerObserver());
videoCapturer.startCapture(480, 640, 30);// width, height, frame
// create videoTrack
videoTrack = peerConnectionFactory.createVideoTrack("videoTrack-1", videoSource);
// get show view
SurfaceViewRenderer localView = findViewById(R.id.localView);
localView.setMirror(true);// 镜像
localView.init(eglBaseContext, null);
// link track to view so that data show in view
videoTrack.addSink(localView);
Activity activity = this;
// link websocket
try {
String uriStr = "ws://host/webrtc/" + Math.abs(new Random().nextInt()) % 100;
Log.e(TAG, "onCreate: " + uriStr);
webSocketClient = new WebSocketClient(new URI(uriStr)) {
@Override
public void onOpen(ServerHandshake handshakedata) {
// create peerConnection
peerConnection = peerConnectionFactory.createPeerConnection(Collections.singletonList(PeerConnection.IceServer
.builder("turn:host:3478")
.setUsername("admin")
.setPassword("123456")
.createIceServer()), new PeerConnectionAdapter() {
@Override
public void onIceGatheringChange(PeerConnection.IceGatheringState iceGatheringState) {
super.onIceGatheringChange(iceGatheringState);
Log.e(TAG, "onIceGatheringChange: " + iceGatheringState);
}
@Override
public void onIceCandidate(IceCandidate iceCandidate) {
super.onIceCandidate(iceCandidate);
//TODO send to remote the local iceCandidate
Log.e(TAG, "onIceCandidate: ICE CANDIDATE");
webSocketClient.send(new Gson().toJson(iceCandidate, iceCandidateType));
}
@Override
public void onAddStream(MediaStream mediaStream) { // turn deal with
super.onAddStream(mediaStream);
Log.e(TAG, "onAddStream: ICE STREAM");
// get remote videoTrack
VideoTrack remoteVideoTrack = mediaStream.videoTracks.get(0);
runOnUiThread(() -> {
SurfaceViewRenderer remoteView = findViewById(R.id.remoteView);
remoteView.setMirror(false);
remoteView.init(eglBaseContext, null);
// link track to view so that data show in view
remoteVideoTrack.addSink(remoteView);
});
}
});
if (peerConnection == null) {
Log.e(TAG, "onCreate: peerConnection fail");
webSocketClient.close();
activity.finish();
}
// create stream
MediaStream stream = peerConnectionFactory.createLocalMediaStream("stream");
stream.addTrack(videoTrack);
peerConnection.addStream(stream);
}
@Override
public void onMessage(String message) {
Log.e(TAG, "onMessage: " + message);
/**
* SDP change
*/
if ("offer".equals(message)) {
// peerConnection offer
peerConnection.createOffer(new SdpAdapter("offer") {
@Override
public void onCreateSuccess(SessionDescription sessionDescription) {
super.onCreateSuccess(sessionDescription);
peerConnection.setLocalDescription(new SdpAdapter("local set local sd"), sessionDescription);
//TODO send sessionDescription to remote
webSocketClient.send("offer-" + new Gson().toJson(sessionDescription, sessionDescriptionType));
}
}, new MediaConstraints());
return;
}
if (message.startsWith("answer-")) {
peerConnection.setRemoteDescription(new SdpAdapter()
, new Gson().fromJson(message.substring("answer-".length()), sessionDescriptionType));
peerConnection.createAnswer(new SdpAdapter() {
@Override
public void onCreateSuccess(SessionDescription sessionDescription) {
super.onCreateSuccess(sessionDescription);
Log.e(TAG, "onCreateSuccess: createAnswer");
peerConnection.setLocalDescription(new SdpAdapter(), sessionDescription);
// send local sd to call
webSocketClient.send("answer-offer-" + new Gson().toJson(sessionDescription, sessionDescriptionType));
}
@Override
public void onCreateFailure(String s) {
super.onCreateFailure(s);
Log.e(TAG, "onCreateFailure: fail " + s);
}
}, new MediaConstraints());
return;
}
if (message.startsWith("offer-receiver-")) {
peerConnection.setRemoteDescription(new SdpAdapter()
, new Gson().fromJson(message.substring("offer-receiver-".length()), sessionDescriptionType));
return;
}
// ------------------------ sdp change -----------------------------------
/**
* ICE change
*/
// get remote IceCandidate
IceCandidate remoteIceCandidate = new Gson().fromJson(message, iceCandidateType);
peerConnection.addIceCandidate(remoteIceCandidate);
// ------------------------ ice change -----------------------------------
}
@Override
public void onClose(int code, String reason, boolean remote) {
}
@Override
public void onError(Exception ex) {
ex.printStackTrace();
}
};
} catch (URISyntaxException e) {
Log.e(TAG, "onCreate: ", e);
return;
}
webSocketClient.connect();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (webSocketClient.isOpen()) {
webSocketClient.close();
webSocketClient = null;
}
if (peerConnection != null) {
peerConnection.dispose();
peerConnection = null;
}
if (videoTrack != null) {
videoTrack.dispose();
videoTrack = null;
}
}
}