屏幕共享

import { screenPreset1080p, screenAudioPresetDefault, LocalScreenTrack } from 'srtc';

const screen: LocalScreenTrack = srtc.createLocalScreenTrack(screenPreset1080p());
await screen.startCapture();                        // 会弹系统授权窗
await channel.publishLocalVideoTrack(screen);

await channel.unpublishLocalVideoTrack(screen);
await screen.stopCapture();

onTrackEnd: (track: Track) => {
  if (track === screen) {
    channel.unpublishLocalVideoTrack(screen);   // 撤发布、通知其他人由业务层做
  }
}

{ "name": "ohos.permission.CAPTURE_SCREEN", "reason": "$string:screen_reason" }

import { defaultScreenCaptureOptions, ScreenCaptureMode, ScreenCaptureOptions } from 'srtc';

const opts: ScreenCaptureOptions = defaultScreenCaptureOptions();
opts.mode = ScreenCaptureMode.specifiedWindow;
opts.targetId = someMissionId;
await screen.startCapture(opts);

const screen = srtc.createLocalScreenTrack(
  screenPreset1080p(),
  screenAudioPresetDefault()
);
await screen.startCapture();
await channel.publishLocalVideoTrack(screen);

// 系统音频要单独发布
const sysAudio = screen.audioTrack;
if (sysAudio !== undefined) {
  await channel.publishLocalAudioTrack(sysAudio);
}