Merge branch 'readonly-p4-donut' into donut

import android.content.Intent;

import android.os.Handler;

import android.os.Message;

import android.os.PowerManager;

import android.os.PowerManager.WakeLock;

import android.os.UEventObserver;

import android.util.Log;

import android.media.AudioManager;

    private static final String HEADSET_STATE_PATH = "/sys/class/switch/h2w/state";

    private static final String HEADSET_NAME_PATH = "/sys/class/switch/h2w/name";

    private Context mContext;

    private int mHeadsetState;

    private String mHeadsetName;

    private boolean mAudioRouteNeedsUpdate;

    private AudioManager mAudioManager;

    private final Context mContext;

    private final WakeLock mWakeLock;  // held while there is a pending route change

    public HeadsetObserver(Context context) {

        mContext = context;

        PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);

        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "HeadsetObserver");

        mWakeLock.setReferenceCounted(false);

        startObserving(HEADSET_UEVENT_MATCH);

                // immediate, so delay the route change by 1000ms.

                // This could be improved once the audio sub-system provides an

                // interface to clear the audio pipeline.

                mWakeLock.acquire();

                mHandler.sendEmptyMessageDelayed(0, 1000);

            } else {

                updateAudioRoute();

        @Override

        public void handleMessage(Message msg) {

            updateAudioRoute();

            mWakeLock.release();

        }

    };