am a0f9a4f7: Merge change I2083b297 into eclair (132dab8f) · Commits · e / os / android_frameworks_base

services/java/com/android/server/HeadsetObserver.java

+56 −46

Original line number	Diff line number	Diff line
		@@ -43,6 +43,8 @@ class HeadsetObserver extends UEventObserver {

		private static final int BIT_HEADSET = (1 << 0);
		private static final int BIT_HEADSET_NO_MIC = (1 << 1);
		private static final int SUPPORTED_HEADSETS = (BIT_HEADSET\|BIT_HEADSET_NO_MIC);
		private static final int HEADSETS_WITH_MIC = BIT_HEADSET;

		private int mHeadsetState;
		private int mPrevHeadsetState;
		@@ -100,20 +102,21 @@ class HeadsetObserver extends UEventObserver {

		private synchronized final void update(String newName, int newState) {
		// Retain only relevant bits
		int headsetState = newState & (BIT_HEADSET\|BIT_HEADSET_NO_MIC);

		if (headsetState != mHeadsetState) {
		boolean isUnplug = false;
		if (((mHeadsetState & BIT_HEADSET) != 0 && (headsetState & BIT_HEADSET) == 0) \|\|
		((mHeadsetState & BIT_HEADSET_NO_MIC) != 0 && (headsetState & BIT_HEADSET_NO_MIC) == 0)) {
		isUnplug = true;
		int headsetState = newState & SUPPORTED_HEADSETS;
		int newOrOld = headsetState \| mHeadsetState;
		// reject all suspect transitions: only accept state changes from:
		// - a: 0 heaset to 1 headset
		// - b: 1 headset to 0 headset
		if (mHeadsetState == headsetState \|\| ((newOrOld & (newOrOld - 1)) != 0)) {
		return;
		}

		mHeadsetName = newName;
		mPrevHeadsetState = mHeadsetState;
		mHeadsetState = headsetState;
		mPendingIntent = true;

		if (isUnplug) {
		if (headsetState == 0) {
		Intent intent = new Intent(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
		mContext.sendBroadcast(intent);

		@@ -125,43 +128,50 @@ class HeadsetObserver extends UEventObserver {
		mWakeLock.acquire();
		mHandler.sendEmptyMessageDelayed(0, 1000);
		} else {
		sendIntent();
		sendIntents();
		mPendingIntent = false;
		}
		}

		private synchronized final void sendIntents() {
		int allHeadsets = SUPPORTED_HEADSETS;
		for (int curHeadset = 1; allHeadsets != 0; curHeadset <<= 1) {
		if ((curHeadset & allHeadsets) != 0) {
		sendIntent(curHeadset);
		allHeadsets &= ~curHeadset;
		}
		}
		}

		private synchronized final void sendIntent() {
		private final void sendIntent(int headset) {
		if ((mHeadsetState & headset) != (mPrevHeadsetState & headset)) {
		// Pack up the values and broadcast them to everyone
		Intent intent = new Intent(Intent.ACTION_HEADSET_PLUG);
		intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
		int state = 0;
		int microphone = 0;

		if ((mHeadsetState & BIT_HEADSET) != (mPrevHeadsetState & BIT_HEADSET)) {
		if ((headset & HEADSETS_WITH_MIC) != 0) {
		microphone = 1;
		if ((mHeadsetState & BIT_HEADSET) != 0) {
		state = 1;
		}
		} else if ((mHeadsetState & BIT_HEADSET_NO_MIC) != (mPrevHeadsetState & BIT_HEADSET_NO_MIC)) {
		if ((mHeadsetState & BIT_HEADSET_NO_MIC) != 0) {
		if ((mHeadsetState & headset) != 0) {
		state = 1;
		}
		}

		intent.putExtra("state", state);
		intent.putExtra("name", mHeadsetName);
		intent.putExtra("microphone", microphone);

		if (LOG) Log.v(TAG, "Intent.ACTION_HEADSET_PLUG: state: "+state+" name: "+mHeadsetName+" mic: "+microphone);
		// TODO: Should we require a permission?
		ActivityManagerNative.broadcastStickyIntent(intent, null);
		}
		}

		private final Handler mHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
		if (mPendingIntent) {
		sendIntent();
		sendIntents();
		mPendingIntent = false;
		}
		mWakeLock.release();