BioharnessDataReader.java

package pl.llp.aircasting.sensor.bioharness;

import pl.llp.aircasting.sensor.BluetoothSocketReader;

import android.bluetooth.BluetoothSocket;
import com.google.common.eventbus.EventBus;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import static pl.llp.aircasting.sensor.BluetoothConnector.sleepFor;

public class BioharnessDataReader implements BluetoothSocketReader
{
  private final BluetoothSocket socket;
  private EventBus eventBus;

  BioharnessPacketReader reader;
  ByteArrayOutputStream bos = new ByteArrayOutputStream();

  public BioharnessDataReader(BluetoothSocket socket, EventBus eventBus)
  {
    this.socket = socket;
    this.reader = new BioharnessPacketReader(eventBus);
  }

  @Override
  public void read() throws IOException
  {
    InputStream stream = socket.getInputStream();
    byte[] readBuffer = new byte[4096];

    int bytesRead = stream.read(readBuffer);
    if (bytesRead > 0)
    {
      bos.write(readBuffer, 0, bytesRead);
      int processed = reader.tryReading(bos);
      if(processed > 0)
      {
        byte[] bytes = bos.toByteArray();
        bos = new ByteArrayOutputStream();
        bos.write(bytes, processed, bytes.length - processed);
      }
    }
    else
    {
      sleepFor(100);
    }
  }

  @Override
  public void setBus(EventBus eventBus)
  {
    this.eventBus = eventBus;
  }
}