在Android中添加YouTube实时流功能

概述

YouTube实时流功能允许用户实时呈现他们的屏幕、摄像头或游戏内容等。这对于游戏开发者、应用程序开发者、教育者和社交媒体用户非常有用。本文将介绍如何在Android应用程序中添加YouTube实时流功能。

步骤

1. 注册开发者账户并创建应用

要使用YouTube实时流功能，您需要具有Google开发者账户，并创建一个应用程序，该应用程序将托管您的实时流。请遵循以下步骤：

1. 访问 Google开发者控制台，登录您的帐户。
2. 创建一个新的项目，并启用YouTube Data API，YouTube Analytics API和Google+ API。要启用API，请单击左侧导航栏中的“API和服务”，然后单击列表中的API名称，并按照提示进行操作。
3. 创建一个OAuth 2.0客户端ID，并选择“Android应用程序”类型。您需要提供包名和SHA-1指纹。将此客户端ID添加到您的应用程序中，以便您的应用程序可以进行身份验证并使用YouTube API。
4. 注册您的应用程序，以便您可以使用YouTube实时流功能。访问 YouTube的Live控制台，点击“创建流”，填写必需的信息，然后单击“创建流”。

2. 集成YouTube Data API

要访问YouTube实时流API，您必须首先使用YouTube Data API检索流的详细信息。按照以下步骤完成此操作：

1. 将以下依赖项添加到您的应用程序模块的build.gradle文件中：

dependencies {
    implementation 'com.google.apis:google-api-services-youtube:v3-rev20211003-1.32.1'
    implementation 'com.google.auth:google-auth-library-oauth2-http:0.25.2'
    implementation 'com.google.oauth-client:google-oauth-client-jetty:1.30.0'
}

2. 创建Google API Client并使用其中一个Oauth2.0授权方法授权：

private static final String CLIENT_SECRET = "your_client_secret";
private static final String CLIENT_ID = "your_client_id";

GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(
        JacksonFactory.getDefaultInstance(), new StringReader(CLIENT_SECRET));
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(),
        clientSecrets, Collections.singleton(YouTubeScopes.YOUTUBE))
        .build();

String authorizeUrl = flow.newAuthorizationUrl()
        .setRedirectUri("http://localhost:8080/Callback")
        .build();
System.out.println("Paste this URL into a web browser to authorize the application.");
System.out.println("  " + authorizeUrl);
System.out.println("Enter the authorization code:");

// Read the authorization code from the standard input stream.
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String code = in.readLine();

// Exchange the authorization code for an access token.
GoogleTokenResponse response = flow.newTokenRequest(code)
        .setRedirectUri("http://localhost:8080/Callback")
        .execute();
GoogleCredential credential = new GoogleCredential.Builder()
        .setTransport(new NetHttpTransport())
        .setJsonFactory(new JacksonFactory())
        .setClientSecrets(clientSecrets)
        .build()
        .setFromTokenResponse(response);

YouTube youtube = new YouTube.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(), credential)
        .setApplicationName("LiveStreams")
        .build();

3. 检索流的详细信息：

String streamId = "your_stream_id";
LiveStream stream = youtube.liveStreams().list("id,snippet").
        setId(streamId).execute().getItems().get(0);

3. 集成YouTube Live Streaming API

要开始实时流，您需要使用YouTube的Live Streaming API。按照以下步骤完成此操作：

1. 将以下依赖项添加到您的应用程序模块的build.gradle文件中：

dependencies {
    implementation 'com.google.api-client:google-api-client:1.32.1'
    implementation 'com.google.auth:google-auth-library-oauth2-http:0.25.2'
}

2. 创建Google API Client并使用Oauth2.0授权方法授权：

private static final String CLIENT_SECRET = "your_client_secret";
private static final String CLIENT_ID = "your_client_id";

GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(
        JacksonFactory.getDefaultInstance(), new StringReader(CLIENT_SECRET));
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(),
        clientSecrets, Collections.singleton(YouTubeScopes.YOUTUBE))
        .build();

String authorizeUrl = flow.newAuthorizationUrl()
        .setRedirectUri("http://localhost:8080/Callback")
        .build();
System.out.println("Paste this URL into a web browser to authorize the application.");
System.out.println("  " + authorizeUrl);
System.out.println("Enter the authorization code:");

// Read the authorization code from the standard input stream.
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String code = in.readLine();

// Exchange the authorization code for an access token.
GoogleTokenResponse response = flow.newTokenRequest(code)
        .setRedirectUri("http://localhost:8080/Callback")
        .execute();
GoogleCredential credential = new GoogleCredential.Builder()
        .setTransport(new NetHttpTransport())
        .setJsonFactory(new JacksonFactory())
        .setClientSecrets(clientSecrets)
        .build()
        .setFromTokenResponse(response);

YouTube youtube = new YouTube.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(), credential)
        .setApplicationName("LiveStreaming")
        .build();

3. 创建一个新的LiveBroadcast对象，它将包含您的实时流：

LiveBroadcast broadcast = new LiveBroadcast();
broadcast.setKind("youtube#liveBroadcast");
broadcast.setStatus(new LiveBroadcastStatus().setPrivacyStatus("public"));
broadcast.setSnippet(new LiveBroadcastSnippet()
        .setTitle("My Stream")
        .setScheduledStartTime(new DateTime(new Date(), TimeZone.getTimeZone("UTC")))
        .setScheduledEndTime(new DateTime(new Date(System.currentTimeMillis() + 3600 * 1000), TimeZone.getTimeZone("UTC")))
);
broadcast = youtube.liveBroadcasts().insert("snippet, status", broadcast).execute();

4. 将您的实时流关联到刚刚创建的LiveBroadcast对象：

LiveBroadcastContentDetails streamContentDetails = new LiveBroadcastContentDetails();
streamContentDetails.setMonitorStream(new MonitorStreamInfo().setEnableMonitorStream(Boolean.FALSE));
streamContentDetails.setEnableEmbed(Boolean.TRUE);
LiveBroadcast broadcastResponse = youtube.liveBroadcasts().update("contentDetails",
        broadcast.setId(broadcast.getId())
                .setContentDetails(streamContentDetails))
        .execute();

LiveStream stream = youtube.liveStreams().list("id,snippet")
        .setId("your_stream_id")
        .execute()
        .getItems()
        .get(0);

LiveBroadcastSnippet broadcastSnippet = broadcastResponse.getSnippet();
broadcastSnippet.setScheduledStartTime(new DateTime(new Date(), TimeZone.getTimeZone("UTC")));
broadcastSnippet.setScheduledEndTime(new DateTime(new Date(System.currentTimeMillis() + 3600 * 1000), TimeZone.getTimeZone("UTC")));
broadcastSnippet.setTitle("My Stream");

LiveBroadcast liveBroadcast = youtube.liveBroadcasts().update("snippet", broadcastResponse).execute();

LiveStreamContentDetails streamContentDetails = new LiveStreamContentDetails();
streamContentDetails.setEnableAutoStart(Boolean.TRUE);
streamContentDetails.setEnableAutoStop(Boolean.TRUE);
streamContentDetails.setLatencyPreference("low");

LiveStream streamResp = youtube.liveStreams().update(
        "snippet,cdn, contentDetails",
        stream.setContentDetails(streamContentDetails).setCdn(
                new CdnSettings().setFrameRate("30fps")
                        .setResolution("720p")
                        .setIngestionType("rtmp"))
).execute();

CDNSettings cdn = streamResp.getCdn();
String ingestionAddress = cdn.getIngestionInfo().getIngestionAddress() + "/" + streamResp.getCdn().getIngestionInfo().getStreamName();
String rtmpUrl = cdn.getIngestionInfo().getBackupIngestionAddress() + "/" + streamResp.getCdn().getIngestionInfo().getStreamName();
String streamId = streamResp.getId();

5. 开始直播：

private void startBroadcasting() {
    String[] command = {"ffmpeg",
            "-i", "your_input_file", 
            "-c:v", "libx264", 
            "-preset", "ultrafast",
            "-b:v", "2500k",
            "-pix_fmt", "yuv420p", 
            "-c:a", "aac", 
            "-f", "flv", 
            ingestionAddress};
    try {
        Process p = new ProcessBuilder(command).start();
        Log.i(TAG, "Broadcasting started.");
    } catch (IOException e) {
        e.printStackTrace();
    }
}

4. 结束直播

当您完成直播时，请确保调用YouTube API以结束直播。按照以下步骤完成此操作：

1. 将以下依赖项添加到您的应用程序模块的build.gradle文件中：

dependencies {
    implementation 'com.google.api-client:google-api-client:1.32.1'
    implementation 'com.google.auth:google-auth-library-oauth2-http:0.25.2'
}

2. 创建Google API Client并使用Oauth2.0授权方法授权：

private static final String CLIENT_SECRET = "your_client_secret";
private static final String CLIENT_ID = "your_client_id";

GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(
        JacksonFactory.getDefaultInstance(), new StringReader(CLIENT_SECRET));
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(),
        clientSecrets, Collections.singleton(YouTubeScopes.YOUTUBE))
        .build();

String authorizeUrl = flow.newAuthorizationUrl()
        .setRedirectUri("http://localhost:8080/Callback")
        .build();
System.out.println("Paste this URL into a web browser to authorize the application.");
System.out.println("  " + authorizeUrl);
System.out.println("Enter the authorization code:");

// Read the authorization code from the standard input stream.
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String code = in.readLine();

// Exchange the authorization code for an access token.
GoogleTokenResponse response = flow.newTokenRequest(code)
        .setRedirectUri("http://localhost:8080/Callback")
        .execute();
GoogleCredential credential = new GoogleCredential.Builder()
        .setTransport(new NetHttpTransport())
        .setJsonFactory(new JacksonFactory())
        .setClientSecrets(clientSecrets)
        .build()
        .setFromTokenResponse(response);

YouTube youtube = new YouTube.Builder(
        new NetHttpTransport(), JacksonFactory.getDefaultInstance(), credential)
        .setApplicationName("LiveStreaming")
        .build();

3. 调用liveBroadcasts().transition()方法来结束直播：

LiveBroadcastStatus status = new LiveBroadcastStatus();
status.setPrivacyStatus("public");
status.setLifeCycleStatus("complete");
youtube.liveBroadcasts().transition("snippet,status", 
        "live", "complete", broadcast.getId())
        .execute();

结论

在本文中，我们介绍了如何在Android应用程序中添加YouTube实时流功能。您需要注册Google开发者账户并创建一个应用程序，然后使用YouTube Data API和Live Streaming API来访问和使用API。请遵循本文中的步骤来完成此过程。