Song Synchronization

TXLiveBase.setListener(new TXLiveBaseListener() {
    @Override
    public void onUpdateNetworkTime(int errCode, String errMsg) {
        super.onUpdateNetworkTime(errCode, errMsg);
        // errCode 0: Calibration is successful and the deviation is within 30ms;
        //         1: Calibration is successful, but the deviation may be more than 30ms;
        //         -1: Calibration failed.
        if (errCode == 0) {
            // Call getNetworkTimestamp of TXLivebase to get the NTP timestamp.
            long ntpTime = TXLiveBase.getNetworkTimestamp();
        } else {
            // Call updateNetworkTime again to start a calibration.
            TXLiveBase.updateNetworkTime();
        }
    }
});
TXLiveBase.updateNetworkTime();

JSONObject jsonObject = new JSONObject();
jsonObject.put("cmd", "startChorus");
// Agree on a time for the chorus.
jsonObject.put("startPlayMusicTS", startTs);
jsonObject.put("musicId", "musicId");
String body = jsonObject.toString();
mTRTCCloud.sendCustomCmdMsg(0, body.getBytes(), false, false);

public void onRecvCustomCmdMsg(String userId, int cmdID, int seq, byte[] message) {
    JSONObject json = new JSONObject(new String(message, "UTF-8"));
    String cmd = json.getString("cmd");
    // Chorus command
    if (cmd.equals("startChorus")) {
    // Chorus start time
    long startPlayMusicTs = json.getLong("startPlayMusicTS");
    int musicId = json.getInt("musicId");
    // The difference between the agreed chorus time and the current time
    long delayMs = Math.abs(startPlayMusicTs - getNtpTime());
    // Start preloading, and jump the song progress according to the agreed chorus time and the current NTP difference.
    mTRTCCloud.callExperimentalAPI("{\"api\":\"preloadMusic\",\"params\": {\"musicId\":musicId,\"path\":\"path\",\"startTimeMS\":delayMs}}");
    // Play the song
    TXAudioEffectManager.AudioMusicParam param = new TXAudioEffectManager.AudioMusicParam(musicId, musicPath);
    param.publish = false;
    mTRTCCloud.getAudioEffectManager().startPlayMusic(param);
}


long mStartPlayMusicTs = "The initially agreed chorus time"；
long currentProgress = subCloud.getAudioEffectManager().getMusicCurrentPosInMS(musicID);
// The ideal playback progress of the current song
long estimatedProgress = getNtpTime() - mStartPlayMusicTs;
// When the playback progress exceeds 50ms, make corrections
if (estimatedProgress >= 0 &&; Math.abs(currentProgress - estimatedProgress) > 50) {
    subCloud.getAudioEffectManager().seekMusicToPosInMS(mMusicID, (int) estimatedProgress);
}