4. オーディオ・ビデオストリームのサブスクリプション

import TRTCCloud from 'trtc-electron-sdk';
const rtcCloud = new TRTCCloud();

// Reference https://web.sdk.qcloud.com/trtc/electron/doc/zh-cn/trtc_electron_sdk/TRTCCloud.html#muteRemoteAudio
// Mute user with id denny
rtcCloud.muteRemoteAudio('denny', true);
// Unmute user with id denny
rtcCloud.muteRemoteAudio('denny', false);

// https://web.sdk.qcloud.com/trtc/electron/doc/zh-cn/trtc_electron_sdk/TRTCCloud.html#startRemoteViewをご参照ください

import TRTCCloud, { TRTCVideoStreamType } from 'trtc-electron-sdk';

const cameraView = document.querySelector('.user-dom');
const screenView = document.querySelector('.screen-dom');
const rtcCloud = new TRTCCloud();
// dennyのカメラ画面の再生（「メインチャネル画面」と呼びます）
rtcCloud.startRemoteView('denny', cameraView, TRTCVideoStreamType.TRTCVideoStreamTypeBig);
// dennyの画面共有画面の再生（「サブチャネル画面」と呼びます）
rtcCloud.startRemoteView('denny', screenView, TRTCVideoStreamType.TRTCVideoStreamTypeSub);
// dennyの低解像度画面の再生（メインチャネル画面と低解像度画面のうちどちらか一方のみ選択可能）
rtcCloud.startRemoteView('denny', cameraView, TRTCVideoStreamType.TRTCVideoStreamTypeSmall);
// dennyのカメラ画面の再生停止
rtcCloud.stopRemoteView('denny', TRTCVideoStreamType.TRTCVideoStreamTypeBig);
// すべてのビデオ画面の再生停止
rtcCloud.stopAllRemoteView();

// https://web.sdk.qcloud.com/trtc/electron/doc/zh-cn/trtc_electron_sdk/TRTCCloud.html#setRemoteRenderParamsをご参照ください
// リモートユーザーdennyのメインチャネル画面をフィルモードに設定し、左右のイメージモードを有効にします
import TRTCCloud, { 
  TRTCRenderParams, TRTCVideoStreamType, TRTCVideoRotation,
  TRTCVideoFillMode, TRTCVideoMirrorType
} from 'trtc-electron-sdk';

const param = new TTRTCRenderParams(
  TRTCVideoRotation.TRTCVideoRotation0,
  TRTCVideoFillMode.TRTCVideoFillMode_Fill,
  TRTCVideoMirrorType.TRTCVideoMirrorType_Enable
);
const rtcCloud = new TRTCCloud();
rtcCloud.setRemoteRenderParams('denny', TRTCVideoStreamType.TRTCVideoStreamTypeBig, param);

import TRTCCloud from 'trtc-electron-sdk';
let openCameraUserList = [];
let openMicUserList = [];
let roomUserList = [];

function onUserVideoAvailable(userId, available) {
  if (available === 1) {
    openCameraUserList.push(userId);
  } else {
    openCameraUserList = openCameraUserList.filter((item) => item !== userId);
  }
}

function onUserAudioAvailable(userId, available) {
  if (available === 1) {
    openMicUserList.push(userId);
  } else {
    openMicUserList = openMicUserList.filter((item) => item !== userId);
  }
}

function onRemoteUserEnterRoom(userId) {
  roomUserList.push(userId);
}

function onRemoteUserLeaveRoom(userId, reason) {
  roomUserList = roomUserList.filter((item) => item !== userId);
}

const rtcCloud = new TRTCCloud();
rtcCloud.on('onUserVideoAvailable', onUserVideoAvailable);
rtcCloud.on('onUserAudioAvailable', onUserAudioAvailable);
rtcCloud.on('onRemoteUserEnterRoom', onRemoteUserEnterRoom);
rtcCloud.on('onRemoteUserLeaveRoom', onRemoteUserLeaveRoom);