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Assets/Script/MultiParticipantHostSample.cs
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256
Assets/Script/MultiParticipantHostSample.cs
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// D:\Project\Unity\webrtc\Assets\Script\MultiParticipantHostSample.cs
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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namespace Unity.RenderStreaming
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{
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/// <summary>
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/// 多Participant Host示例
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/// Host显示自己的本地画面，同时为每个加入的Participant动态创建RawImage显示其远程画面
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///
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/// 使用方法：
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/// 1. 将此脚本挂载到场景中的GameObject上
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/// 2. 在Inspector中关联各字段
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/// 3. participantVideoContainer 需要挂载 GridLayoutGroup 或 VerticalLayoutGroup
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/// </summary>
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[RequireComponent(typeof(HostConnection))]
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public class MultiParticipantHostSample : MonoBehaviour
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{
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#pragma warning disable 0649
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[Header("核心组件")]
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[SerializeField] private SignalingManager renderStreaming;
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[SerializeField] private HostConnection hostConnection;
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[Header("Host本地视频")]
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[SerializeField] private VideoStreamSender videoStreamSender;
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[SerializeField] private AudioStreamSender microphoneStreamer;
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[SerializeField] private RawImage localVideoImage;
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[SerializeField] private Toggle audioLoopbackToggle;
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[Header("Participant视频容器")]
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[Tooltip("用于放置动态创建的Participant视频UI的父物体，需挂载LayoutGroup")]
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[SerializeField] private Transform participantVideoContainer;
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[Header("UI控件")]
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[SerializeField] private Button startButton;
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[SerializeField] private Button setUpButton;
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[SerializeField] private Button hangUpButton;
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[SerializeField] private InputField connectionIdInput;
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[SerializeField] private Dropdown webcamSelectDropdown;
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[SerializeField] private Dropdown microphoneSelectDropdown;
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#pragma warning restore 0649
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private string connectionId;
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private RenderStreamingSettings settings;
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/// <summary>
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/// 每个Participant的UI信息
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/// </summary>
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private Dictionary<string, ParticipantUI> participantUIs = new Dictionary<string, ParticipantUI>();
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private class ParticipantUI
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{
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public GameObject root;
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public RawImage videoImage;
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public Text nameLabel;
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}
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void Awake()
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{
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startButton.interactable = true;
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// 初始化UI
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setUpButton.interactable = true;
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hangUpButton.interactable = false;
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connectionIdInput.interactable = true;
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startButton.onClick.AddListener(() =>
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{
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videoStreamSender.enabled = true;
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startButton.interactable = false;
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webcamSelectDropdown.interactable = false;
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microphoneStreamer.enabled = true;
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microphoneSelectDropdown.interactable = false;
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setUpButton.interactable = true;
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});
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setUpButton.onClick.AddListener(SetUp);
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hangUpButton.onClick.AddListener(HangUp);
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connectionIdInput.onValueChanged.AddListener(input => connectionId = input);
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connectionIdInput.text = $"{Random.Range(0, 99999):D5}";
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// 本地视频：Sender启动后显示
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videoStreamSender.OnStartedStream += id =>
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{
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if (videoStreamSender.sourceWebCamTexture != null)
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localVideoImage.texture = videoStreamSender.sourceWebCamTexture;
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};
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// 订阅HostConnection事件
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hostConnection.OnParticipantConnected += HandleParticipantConnected;
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hostConnection.OnParticipantDisconnected += HandleParticipantDisconnected;
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if (settings == null)
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settings = new RenderStreamingSettings();
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if (settings != null)
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{
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videoStreamSender.width = (uint)settings.StreamSize.x;
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videoStreamSender.height = (uint)settings.StreamSize.y;
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}
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audioLoopbackToggle.onValueChanged.AddListener(isOn =>
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{
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microphoneStreamer.loopback = isOn;
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});
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microphoneStreamer.OnStartedStream += id => microphoneStreamer.loopback = audioLoopbackToggle.isOn;
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microphoneSelectDropdown.onValueChanged.AddListener(index => microphoneStreamer.sourceDeviceIndex = index);
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microphoneSelectDropdown.options =
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Microphone.devices.Select(x => new Dropdown.OptionData(x)).ToList();
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}
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void Start()
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{
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if (renderStreaming.runOnAwake)
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return;
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if (settings != null)
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renderStreaming.useDefaultSettings = settings.UseDefaultSettings;
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if (settings?.SignalingSettings != null)
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renderStreaming.SetSignalingSettings(settings.SignalingSettings);
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renderStreaming.Run();
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}
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private void SetUp()
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{
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setUpButton.interactable = false;
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hangUpButton.interactable = true;
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connectionIdInput.interactable = false;
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videoStreamSender.enabled = true;
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if (settings != null)
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videoStreamSender.SetCodec(settings.SenderVideoCodec);
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hostConnection.CreateConnection(connectionId);
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}
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private void HangUp()
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{
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hostConnection.DeleteConnection(connectionId);
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// 清理所有Participant UI
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foreach (var ui in participantUIs.Values)
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{
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if (ui.root != null)
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Destroy(ui.root);
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}
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participantUIs.Clear();
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localVideoImage.texture = null;
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setUpButton.interactable = true;
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hangUpButton.interactable = false;
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connectionIdInput.interactable = true;
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connectionIdInput.text = $"{Random.Range(0, 99999):D5}";
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}
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/// <summary>
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/// 新Participant连接成功回调
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/// 此时Participant的独立Receiver已创建，可以绑定视频显示
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/// </summary>
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private void HandleParticipantConnected(ParticipantStreams ps)
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{
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// 创建Participant UI
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var ui = CreateParticipantUI(ps.participantId);
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participantUIs[ps.participantId] = ui;
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// 绑定视频：当Receiver收到纹理时更新RawImage
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ps.videoReceiver.OnUpdateReceiveTexture += texture =>
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{
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if (ui.videoImage != null)
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ui.videoImage.texture = texture;
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};
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// 绑定音频：AudioSource已在HostConnection中配置
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ps.audioReceiver.OnUpdateReceiveAudioSource += source =>
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{
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if (source != null && !source.isPlaying)
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{
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source.loop = true;
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source.Play();
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}
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};
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Debug.Log($"[MultiParticipantHost] Participant UI created: {ps.participantId}");
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}
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/// <summary>
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/// Participant断开连接回调
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/// 销毁其UI
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/// </summary>
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private void HandleParticipantDisconnected(string participantId)
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{
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if (participantUIs.TryGetValue(participantId, out var ui))
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{
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if (ui.root != null)
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Destroy(ui.root);
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participantUIs.Remove(participantId);
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}
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Debug.Log($"[MultiParticipantHost] Participant UI removed: {participantId}");
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}
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/// <summary>
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/// 动态创建单个Participant的视频显示UI
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/// 结构: [NameLabel] + [RawImage(视频画面)]
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/// </summary>
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private ParticipantUI CreateParticipantUI(string participantId)
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{
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var ui = new ParticipantUI();
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// 根节点
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ui.root = new GameObject($"ParticipantUI_{participantId}");
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ui.root.transform.SetParent(participantVideoContainer, false);
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// 添加VerticalLayoutGroup使内容垂直排列
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var vlg = ui.root.AddComponent<VerticalLayoutGroup>();
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vlg.childControlWidth = true;
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vlg.childControlHeight = false;
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vlg.childForceExpandWidth = true;
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vlg.childForceExpandHeight = false;
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vlg.spacing = 2;
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// 名称标签
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var labelObj = new GameObject("NameLabel");
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labelObj.transform.SetParent(ui.root.transform, false);
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ui.nameLabel = labelObj.AddComponent<Text>();
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ui.nameLabel.text = $"Participant: {participantId}";
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ui.nameLabel.fontSize = 14;
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ui.nameLabel.color = Color.white;
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ui.nameLabel.alignment = TextAnchor.MiddleCenter;
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var labelLayout = labelObj.AddComponent<LayoutElement>();
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labelLayout.preferredHeight = 20;
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// 视频画面
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var imageObj = new GameObject("VideoImage");
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imageObj.transform.SetParent(ui.root.transform, false);
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ui.videoImage = imageObj.AddComponent<RawImage>();
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ui.videoImage.color = Color.black;
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var imageLayout = imageObj.AddComponent<LayoutElement>();
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imageLayout.preferredHeight = 200;
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// AspectRatioFitter保持视频比例
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var aspectRatio = imageObj.AddComponent<AspectRatioFitter>();
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aspectRatio.aspectMode = AspectRatioFitter.AspectMode.FitInParent;
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aspectRatio.aspectRatio = 16f / 9f;
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return ui;
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}
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void OnDestroy()
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{
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if (hostConnection != null)
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{
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hostConnection.OnParticipantConnected -= HandleParticipantConnected;
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hostConnection.OnParticipantDisconnected -= HandleParticipantDisconnected;
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}
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}
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}
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}
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3
Assets/Script/MultiParticipantHostSample.cs.meta
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3
Assets/Script/MultiParticipantHostSample.cs.meta
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@@ -0,0 +1,3 @@
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fileFormatVersion: 2
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guid: d7f4e4288a9d4b26b7476ec311616fc2
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timeCreated: 1777451230
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100
Assets/Script/RenderStreamingSettings.cs
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100
Assets/Script/RenderStreamingSettings.cs
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using UnityEngine;
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namespace Unity.RenderStreaming
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{
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internal enum SignalingType
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{
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WebSocket,
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Http,
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}
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internal class RenderStreamingSettings
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{
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public const int DefaultStreamWidth = 1280;
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public const int DefaultStreamHeight = 720;
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private bool useDefaultSettings = true;
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private SignalingType signalingType = SignalingType.WebSocket;
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private string signalingAddress = "localhost";
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private int signalingInterval = 5000;
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private bool signalingSecured = false;
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private Vector2Int streamSize = new Vector2Int(DefaultStreamWidth, DefaultStreamHeight);
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private VideoCodecInfo receiverVideoCodec = null;
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private VideoCodecInfo senderVideoCodec = null;
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public bool UseDefaultSettings
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{
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get { return useDefaultSettings; }
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set { useDefaultSettings = value; }
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}
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public SignalingType SignalingType
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{
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get { return signalingType; }
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set { signalingType = value; }
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}
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public string SignalingAddress
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{
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get { return signalingAddress; }
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set { signalingAddress = value; }
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}
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public bool SignalingSecured
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{
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get { return signalingSecured; }
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set { signalingSecured = value; }
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}
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public int SignalingInterval
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{
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get { return signalingInterval; }
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set { signalingInterval = value; }
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}
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public SignalingSettings SignalingSettings
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{
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get
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{
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switch (signalingType)
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{
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case SignalingType.WebSocket:
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{
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var schema = signalingSecured ? "wss" : "ws";
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return new WebSocketSignalingSettings
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(
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url: $"{schema}://{signalingAddress}"
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);
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}
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case SignalingType.Http:
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{
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var schema = signalingSecured ? "https" : "http";
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return new HttpSignalingSettings
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(
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url: $"{schema}://{signalingAddress}",
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interval: signalingInterval
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);
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}
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}
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return null;
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}
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}
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public Vector2Int StreamSize
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{
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get { return streamSize; }
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set { streamSize = value; }
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}
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public VideoCodecInfo ReceiverVideoCodec
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{
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get { return receiverVideoCodec; }
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set { receiverVideoCodec = value; }
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}
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public VideoCodecInfo SenderVideoCodec
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{
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get { return senderVideoCodec; }
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set { senderVideoCodec = value; }
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}
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}
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}
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3
Assets/Script/RenderStreamingSettings.cs.meta
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3
Assets/Script/RenderStreamingSettings.cs.meta
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fileFormatVersion: 2
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guid: 2fb2fd1cab5048e5b3f1bbe28826d1b9
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timeCreated: 1777451952
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