Java腾讯云音视频对接

本文旨在从多个方面详细阐述Java腾讯云音视频对接，提供完整的代码示例。

一、腾讯云音视频介绍

腾讯云音视频服务（Cloud Tencent Real-Time Communication）是一款覆盖全球的实时音视频通信服务，拥有高品质的音视频通话、直播、云录制、点播等音视频功能。可广泛应用于教育、医疗、在线娱乐等领域。

二、引入腾讯云SDK

要使用腾讯云音视频服务，首先需要在项目中引入腾讯云SDK。

<dependency>
    <groupId>com.tencentcloudapi</groupId>
    <artifactId>tencentcloud-sdk-java</artifactId>
    <version>3.0.132</version>
</dependency>

三、音视频通话

音视频通话是腾讯云音视频服务中最常用的功能之一。

1. 创建 TRTC 实例

在开始之前，需要从腾讯云控制台获取 SDKAppID 和 SecretKey，然后使用此信息创建 TRTC 实例。

import com.tencentcloudapi.common.Credential;
import com.tencentcloudapi.trtc.v20190722.TrtcClient;
import com.tencentcloudapi.trtc.v20190722.models.*;

public static TrtcClient createClient(String secretId, String secretKey) {
    Credential cred = new Credential(secretId, secretKey);
    ClientProfile clientProfile = new ClientProfile();
    return new TrtcClient(cred, "", clientProfile);
}

String secretId = "your-secret-id";
String secretKey = "your-secret-key";
TrtcClient client = createClient(secretId, secretKey);

2. 创建房间

创建房间是音视频通话的第一步，需要指定房间号和用户ID。

public static CreateRoomResponse createRoom(TrtcClient client, String sdkAppId, Integer roomNumber, String userId) throws Exception {
    CreateRoomRequest req = new CreateRoomRequest();
    req.setSdkAppId(sdkAppId);
    req.setRoomId(roomNumber.toString());
    req.setUserId(userId);
    return client.CreateRoom(req);
}

String sdkAppId = "your-sdk-app-id";
int roomNumber = 1234;
String userId = "your-user-id";
CreateRoomResponse res = createRoom(client, sdkAppId, roomNumber, userId);

3. 加入房间

加入房间是音视频通话的第二步，需要指定房间号和用户ID。

public static JoinRoomResponse joinRoom(TrtcClient client, String sdkAppId, Integer roomNumber, String userId) throws Exception {
    JoinRoomRequest req = new JoinRoomRequest();
    req.setSdkAppId(sdkAppId);
    req.setRoomId(roomNumber.toString());
    req.setUserId(userId);
    return client.JoinRoom(req);
}

JoinRoomResponse res = joinRoom(client, sdkAppId, roomNumber, userId);

4. 推流/拉流

通过推流和拉流可以实现音视频的传输。

public static void publishStream(TrtcClient client, String streamId, String signature) throws Exception {
    PublishStreamRequest req = new PublishStreamRequest();
    req.setSignature(signature);
    req.setStreamId(streamId);
    req.setStartTime(System.currentTimeMillis() / 1000);
    client.PublishStream(req);
}

public static void playStream(TrtcClient client, String streamId, String signature) throws Exception {
    PlayStreamRequest req = new PlayStreamRequest();
    req.setSignature(signature);
    req.setStreamId(streamId);
    req.setStartTime(System.currentTimeMillis() / 1000);
    client.PlayStream(req);
}

String streamId = "1234";
String signature = "your-signature";
publishStream(client, streamId, signature);
playStream(client, streamId, signature);

四、跨房间连麦

跨房间连麦是腾讯云音视频服务中的高级功能之一，可以实现多个房间之间的音视频连麦。

1. 创建连接

在创建连接之前，需要先创建两个房间。

int roomNumber1 = 1234;
String userId1 = "user1";
int roomNumber2 = 5678;
String userId2 = "user2";
createRoom(client, sdkAppId, roomNumber1, userId1);
createRoom(client, sdkAppId, roomNumber2, userId2);

然后分别在两个房间中加入房间。

joinRoom(client, sdkAppId, roomNumber1, userId1);
joinRoom(client, sdkAppId, roomNumber2, userId2);

最后创建连接，指定两个房间的房间号和用户ID。

public static CreateLinkResponse createLink(TrtcClient client, String sdkAppId, int roomId1, String userId1, int roomId2, String userId2) throws Exception {
    CreateLinkRequest req = new CreateLinkRequest();
    req.setSdkAppId(sdkAppId);
    req.setFromRoomId(roomId1);
    req.setFromUserId(userId1);
    req.setToRoomId(roomId2);
    req.setToUserId(userId2);
    return client.CreateLink(req);
}

CreateLinkResponse res = createLink(client, sdkAppId, roomNumber1, userId1, roomNumber2, userId2);

2. 断开连接

断开连接就是直接删除先前创建的连接。

public static DeleteLinkResponse deleteLink(TrtcClient client, String sdkAppId, String linkId) throws Exception {
    DeleteLinkRequest req = new DeleteLinkRequest();
    req.setSdkAppId(sdkAppId);
    req.setLinkId(linkId);
    return client.DeleteLink(req);
}

String linkId = res.getLinkId();
deleteLink(client, sdkAppId, linkId);

五、直播功能

腾讯云音视频服务不仅可以实现音视频通话，还可以实现直播功能。

1. 创建直播

创建直播需要指定直播名称和推流地址。

public static CreateLiveResponse createLive(TrtcClient client, String streamName, String pushUrl) throws Exception {
    CreateLiveRequest req = new CreateLiveRequest();
    req.setStreamName(streamName);
    req.setPushUrl(pushUrl);
    return client.CreateLive(req);
}

String streamName = "live-stream";
String pushUrl = "your-push-url";
CreateLiveResponse res = createLive(client, streamName, pushUrl);

2. 开始直播/停止直播

开始直播和停止直播是直播功能的核心操作。

public static void startLive(TrtcClient client, String streamId) throws Exception {
    StartLiveRequest req = new StartLiveRequest();
    req.setStreamId(streamId);
    req.setStartTime(System.currentTimeMillis() / 1000);
    client.StartLive(req);
}

public static void stopLive(TrtcClient client, String streamId) throws Exception {
    StopLiveRequest req = new StopLiveRequest();
    req.setStreamId(streamId);
    req.setEndTime(System.currentTimeMillis() / 1000);
    client.StopLive(req);
}

String streamId = res.getStreamId();
startLive(client, streamId);
stopLive(client, streamId);

六、总结

本文详细阐述了Java腾讯云音视频对接的多个方面，并且提供了完整的代码示例，可供开发者参考和学习。