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Ant Media Server supports RTMP, RTSP, MP4, HLS, WebRTC, Adaptive Streaming, etc.

There is a newer version: 2.11.3

package io.antmedia.statistic;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import io.antmedia.AntMediaApplicationAdapter;
import io.antmedia.AppSettings;
import io.antmedia.datastore.db.DataStoreFactory;
import io.antmedia.datastore.db.IDataStoreFactory;
import io.antmedia.muxer.IAntMediaStreamHandler;
import io.antmedia.settings.ServerSettings;
import io.vertx.core.Vertx;

public class HlsViewerStats extends ViewerStats implements IStreamStats, ApplicationContextAware{

	protected static Logger logger = LoggerFactory.getLogger(HlsViewerStats.class);
	
	public static final String BEAN_NAME = "hls.viewerstats";
	
	private Object lock = new Object();

	@Override
	public void setApplicationContext(ApplicationContext applicationContext)  {
		dataStoreFactory = (DataStoreFactory) applicationContext.getBean(IDataStoreFactory.BEAN_NAME);
		
		setType(ViewerStats.HLS_TYPE);
		
		vertx = (Vertx) applicationContext.getBean(IAntMediaStreamHandler.VERTX_BEAN_NAME);

		serverSettings = (ServerSettings)applicationContext.getBean(ServerSettings.BEAN_NAME);
		
		AppSettings settings = (AppSettings)applicationContext.getBean(AppSettings.BEAN_NAME);
		timeoutMS = getTimeoutMSFromSettings(settings, timeoutMS, HLS_TYPE);
		
		AntMediaApplicationAdapter adapter = (AntMediaApplicationAdapter)applicationContext.getBean(AntMediaApplicationAdapter.BEAN_NAME);
		appName = adapter.getScope().getName();
		
		vertx.setPeriodic(DEFAULT_TIME_PERIOD_FOR_VIEWER_COUNT, yt-> 
		{
			synchronized (lock) {
				updateViewerCountProcess(HLS_TYPE);
			}
		});	
	}

}