VoiceOutput.java

package mekanism.client.voice;

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
import java.io.EOFException;

import mekanism.common.Mekanism;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class VoiceOutput extends Thread
{
	public VoiceClient voiceClient;

	public DataLine.Info speaker;

	public SourceDataLine sourceLine;

	public VoiceOutput(VoiceClient client)
	{
		voiceClient = client;
		speaker = new DataLine.Info(SourceDataLine.class, voiceClient.format, 2200);

		setDaemon(true);
		setName("VoiceServer Client Output Thread");
	}

	@Override
	public void run()
	{
		try {
			sourceLine = ((SourceDataLine)AudioSystem.getLine(speaker));
			sourceLine.open(voiceClient.format, 2200);
			sourceLine.start();
			byte[] audioData = new byte[4096]; // less allocation/gc (if done outside the loop)
			int byteCount;
			int length;
			while(voiceClient.running)
			{
				try {
					byteCount = voiceClient.input.readUnsignedShort(); //Why would we only read signed shorts? negative amount of waiting data doesn't make sense anyway :D
					while(byteCount>0 && voiceClient.running){
						length=audioData.length;
						if(length>byteCount) length=byteCount;
						length = voiceClient.input.read(audioData, 0, length); // That one returns the actual read amount of data (we can begin transferring even if input is waiting/incomplete)
						if(length<0) throw new EOFException();
						sourceLine.write(audioData, 0, length);
						byteCount-=length;
					}
				} catch(EOFException eof){
				Mekanism.logger.error("VoiceServer: Unexpected input EOF Exception occured.");
				break; // voiceClient.input will continue throwing EOFs -> no need to go on checking
				} catch(Exception e) {
				/*Would a debug output be good here?*/
				}
			}
		} catch(Exception e) {
			Mekanism.logger.error("VoiceServer: Error while running client output thread.");
			e.printStackTrace();
		}
	}

	public void close()
	{
		sourceLine.flush();
		sourceLine.close();
	}
}