Agora & Unity。如何为一家广播公司吸引观众

Question

如何执行此任务：我有一个任务，我只需要一个人能够广播所有连接他们的网络摄像头。即其他连接的不广播视频，只看到一个(管理员(。

我只是想好好研究一下。请帮帮帮帮！

如果可以的话，禁用广播员和观众的语音流。

我必须如何在TestHelloUnityVideo.cs中修改Agora演示场景？

using UnityEngine;
using UnityEngine.UI;
using agora_gaming_rtc;
using agora_utilities;

// this is an example of using Agora Unity SDK
// It demonstrates:
// How to enable video
// How to join/leave channel
// 
public class TestHelloUnityVideo
{

// instance of agora engine
private IRtcEngine mRtcEngine;


// load agora engine
public void loadEngine(string appId)
{
// start sdk
Debug.Log("initializeEngine");
if (mRtcEngine != null)
{
Debug.Log("Engine exists. Please unload it first!");
return;
}
// init engine
mRtcEngine = IRtcEngine.GetEngine(appId);
// enable log
mRtcEngine.SetLogFilter(LOG_FILTER.DEBUG | LOG_FILTER.INFO | LOG_FILTER.WARNING | LOG_FILTER.ERROR | LOG_FILTER.CRITICAL);
}
public void join(string channel)
{
Debug.Log("calling join (channel = " + channel + ")");

if (mRtcEngine == null)
return;

// set callbacks (optional)
mRtcEngine.OnJoinChannelSuccess = onJoinChannelSuccess;
mRtcEngine.OnUserJoined = onUserJoined;
mRtcEngine.OnUserOffline = onUserOffline;
// enable video
mRtcEngine.EnableVideo();
// allow camera output callback
mRtcEngine.EnableVideoObserver();
// join channel
mRtcEngine.JoinChannel(channel, null, 0);
// Optional: if a data stream is required, here is a good place to create it
int streamID = mRtcEngine.CreateDataStream(true, true);
Debug.Log("initializeEngine done, data stream id = " + streamID);
}
public string getSdkVersion()
{
string ver = IRtcEngine.GetSdkVersion();
if (ver == "2.9.1.45")
{
ver = "2.9.2";  // A conversion for the current internal version#
}
else
{
if (ver == "2.9.1.46")
{
ver = "2.9.2.2";  // A conversion for the current internal version#
}
}
return ver;
}
public void leave()
{
Debug.Log("calling leave");
if (mRtcEngine == null)
return;
// leave channel
mRtcEngine.LeaveChannel();
// deregister video frame observers in native-c code
mRtcEngine.DisableVideoObserver();
}
// unload agora engine
public void unloadEngine()
{
Debug.Log("calling unloadEngine");
// delete
if (mRtcEngine != null)
{
IRtcEngine.Destroy();  // Place this call in ApplicationQuit
mRtcEngine = null;
}
}

public void EnableVideo(bool pauseVideo)
{
if (mRtcEngine != null)
{
if (!pauseVideo)
{
mRtcEngine.EnableVideo();
}
else
{
mRtcEngine.DisableVideo();
}
}
}
// accessing GameObject in Scnene1
// set video transform delegate for statically created GameObject
public void onSceneHelloVideoLoaded()
{
// Attach the SDK Script VideoSurface for video rendering
GameObject quad = GameObject.Find("Quad");
if (ReferenceEquals(quad, null))
{
Debug.Log("BBBB: failed to find Quad");
return;
}
else
{
quad.AddComponent<VideoSurface>();
}
GameObject cube = GameObject.Find("Cube");
if (ReferenceEquals(cube, null))
{
Debug.Log("BBBB: failed to find Cube");
return;
}
else
{
cube.AddComponent<VideoSurface>();
}
}
// implement engine callbacks
private void onJoinChannelSuccess(string channelName, uint uid, int elapsed)
{
Debug.Log("JoinChannelSuccessHandler: uid = " + uid);
GameObject textVersionGameObject = GameObject.Find("VersionText");
textVersionGameObject.GetComponent<Text>().text = "SDK Version : " + getSdkVersion();
}
// When a remote user joined, this delegate will be called. Typically
// create a GameObject to render video on it

private void onUserJoined(uint uid, int elapsed)
{
Debug.Log("onUserJoined: uid = " + uid + " elapsed = " + elapsed);
// this is called in main thread

// find a game object to render video stream from 'uid'
GameObject go = GameObject.Find(uid.ToString());
if (!ReferenceEquals(go, null))
{
return; // reuse
}

// create a GameObject and assign to this new user
VideoSurface videoSurface = makeImageSurface(uid.ToString());
if (!ReferenceEquals(videoSurface, null))
{
// configure videoSurface
videoSurface.SetForUser(uid);
videoSurface.SetEnable(true);
videoSurface.SetVideoSurfaceType(AgoraVideoSurfaceType.RawImage);
videoSurface.SetGameFps(30);
}
}
public VideoSurface makePlaneSurface(string goName)
{
GameObject go = GameObject.CreatePrimitive(PrimitiveType.Plane);
if (go == null)
{
return null;
}
go.name = goName;
// set up transform
go.transform.Rotate(-90.0f, 0.0f, 0.0f);
float yPos = Random.Range(3.0f, 5.0f);
float xPos = Random.Range(-2.0f, 2.0f);
go.transform.position = new Vector3(xPos, yPos, 0f);
go.transform.localScale = new Vector3(0.25f, 0.5f, .5f);
// configure videoSurface
VideoSurface videoSurface = go.AddComponent<VideoSurface>();
return videoSurface;
}
private const float Offset = 100;
public VideoSurface makeImageSurface(string goName)
{
GameObject go = new GameObject();
if (go == null)
{
return null;
}
go.name = goName;
// to be renderered onto
go.AddComponent<RawImage>();
// make the object draggable
go.AddComponent<UIElementDragger>();
GameObject canvas = GameObject.Find("Canvas");
if (canvas != null)
{
go.transform.parent = canvas.transform;
}
// set up transform
go.transform.Rotate(0f, 0.0f, 180.0f);
float xPos = Random.Range(Offset - Screen.width / 2f, Screen.width / 2f - Offset);
float yPos = Random.Range(Offset, Screen.height / 2f - Offset);
go.transform.localPosition = new Vector3(xPos, yPos, 0f);
go.transform.localScale = new Vector3(3f, 4f, 1f);
// configure videoSurface
VideoSurface videoSurface = go.AddComponent<VideoSurface>();
return videoSurface;
}
// When remote user is offline, this delegate will be called. Typically
// delete the GameObject for this user
private void onUserOffline(uint uid, USER_OFFLINE_REASON reason)
{
// remove video stream
Debug.Log("onUserOffline: uid = " + uid + " reason = " + reason);
// this is called in main thread
GameObject go = GameObject.Find(uid.ToString());
if (!ReferenceEquals(go, null))
{
Object.Destroy(go);
}
}
}

这是Unity的演示场景代码。

Answer 1

广播模式

我需要一个人从他们连接的网络摄像头上广播，所有其他用户都可以看到，而其他连接的用户不广播视频。

Agora的默认调用状态是"；"通信模式"；(多对多(，本质上是一种群视频通话，每个人都可以在通话中看到/听到其他人的声音。您正在寻找的是我们的"；"广播模式"；(一对多(。

首先，您必须将ChannelProfile((设置为CHANNEL_PROFILE_LIVE_BROADCASTING，这将为广播公司设置Agora频道->受众设置。

然后，您必须指定谁是广播者，谁是受众——默认角色是受众。调用SetClientRole((来指定您想成为广播员、的人员

---

禁用语音流

如果可以的话，禁用广播公司和观众的语音流。

你确实可以！SetDefaultMuteAllRemoteAudioStreams((将禁用来自每个用户的所有传入音频流。如果您想取消特定人员的静音，请调用MuteRemoteAudioStream(userUIDToUnmute，false(