Merge "Grab audio focus when starting Voice actoins. tested in pi (go/ag/3974655)." (a004283a) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/hfpclient/HeadsetClientService.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -84,6 +84,12 @@ public class HeadsetClientService extends ProfileService {
		mNativeInterface.initializeNative();

		mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
		if (mAudioManager == null) {
		Log.e(TAG, "AudioManager service doesn't exist?");
		} else {
		// start AudioManager in a known state
		mAudioManager.setParameters("hfp_enable=false");
		}

		mSmFactory = new HeadsetClientStateMachineFactory();
		mStateMachineMap.clear();
		@@ -924,4 +930,8 @@ public class HeadsetClientService extends ProfileService {
		protected void setSMFactory(HeadsetClientStateMachineFactory factory) {
		mSmFactory = factory;
		}

		AudioManager getAudioManager() {
		return mAudioManager;
		}
		}

android/app/src/com/android/bluetooth/hfpclient/HeadsetClientStateMachine.java

+54 −23

Original line number	Diff line number	Diff line
		@@ -39,8 +39,9 @@ import android.bluetooth.BluetoothHeadsetClient;
		import android.bluetooth.BluetoothHeadsetClientCall;
		import android.bluetooth.BluetoothProfile;
		import android.bluetooth.BluetoothUuid;
		import android.content.Context;
		import android.content.Intent;
		import android.media.AudioAttributes;
		import android.media.AudioFocusRequest;
		import android.media.AudioManager;
		import android.os.Bundle;
		import android.os.Looper;
		@@ -156,7 +157,6 @@ public class HeadsetClientStateMachine extends StateMachine {
		// indicator
		private Pair<Integer, Object> mPendingAction;

		private static AudioManager sAudioManager;
		private int mAudioState;
		private boolean mAudioWbs;
		private int mVoiceRecognitionActive;
		@@ -169,6 +169,11 @@ public class HeadsetClientStateMachine extends StateMachine {
		private int mPeerFeatures;
		private int mChldFeatures;

		// This is returned when requesting focus from AudioManager
		private AudioFocusRequest mAudioFocusRequest;

		private AudioManager mAudioManager;

		// Accessor for the states, useful for reusing the state machines
		public IState getDisconnectedState() {
		return mDisconnected;
		@@ -690,13 +695,9 @@ public class HeadsetClientStateMachine extends StateMachine {
		HeadsetClientStateMachine(HeadsetClientService context, Looper looper) {
		super(TAG, looper);
		mService = context;
		mAudioManager = mService.getAudioManager();

		mAdapter = BluetoothAdapter.getDefaultAdapter();
		if (sAudioManager == null) {
		sAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
		// Initialize hfp_enable into a known state.
		routeHfpAudio(false);
		}
		mAudioState = BluetoothHeadsetClient.STATE_AUDIO_DISCONNECTED;
		mAudioWbs = false;
		mVoiceRecognitionActive = HeadsetClientHalConstants.VR_STATE_STOPPED;
		@@ -706,8 +707,8 @@ public class HeadsetClientStateMachine extends StateMachine {
		mIndicatorNetworkSignal = 0;
		mIndicatorBatteryLevel = 0;

		sMaxAmVcVol = sAudioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL);
		sMinAmVcVol = sAudioManager.getStreamMinVolume(AudioManager.STREAM_VOICE_CALL);
		sMaxAmVcVol = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL);
		sMinAmVcVol = mAudioManager.getStreamMinVolume(AudioManager.STREAM_VOICE_CALL);

		mOperatorName = null;
		mSubscriberInfo = null;
		@@ -740,26 +741,53 @@ public class HeadsetClientStateMachine extends StateMachine {
		return hfcsm;
		}

		static synchronized void routeHfpAudio(boolean enable) {
		synchronized void routeHfpAudio(boolean enable) {
		if (mAudioManager == null) {
		Log.e(TAG, "AudioManager is null!");
		return;
		}
		if (DBG) {
		Log.d(TAG, "hfp_enable=" + enable);
		}
		if (enable && !sAudioIsRouted) {
		sAudioManager.setParameters("hfp_enable=true");
		mAudioManager.setParameters("hfp_enable=true");
		} else if (!enable) {
		sAudioManager.setParameters("hfp_enable=false");
		mAudioManager.setParameters("hfp_enable=false");
		}
		sAudioIsRouted = enable;
		}

		private AudioFocusRequest requestAudioFocus() {
		AudioAttributes streamAttributes =
		new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_VOICE_COMMUNICATION)
		.setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
		.build();
		AudioFocusRequest focusRequest =
		new AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
		.setAudioAttributes(streamAttributes)
		.build();
		int focusRequestStatus = mAudioManager.requestAudioFocus(focusRequest);
		if (DBG) {
		String s = (focusRequestStatus == AudioManager.AUDIOFOCUS_REQUEST_GRANTED)
		? "AudioFocus granted" : "AudioFocus NOT granted";
		Log.d(TAG, "AudioManager requestAudioFocus returned: " + s);
		}
		return focusRequest;
		}

		public void doQuit() {
		Log.d(TAG, "doQuit");
		if (sAudioManager != null) {
		routeHfpAudio(false);
		}
		returnAudioFocusIfNecessary();
		quitNow();
		}

		private void returnAudioFocusIfNecessary() {
		if (mAudioFocusRequest == null) return;
		mAudioManager.abandonAudioFocusRequest(mAudioFocusRequest);
		mAudioFocusRequest = null;
		}

		static int hfToAmVol(int hfVol) {
		int amRange = sMaxAmVcVol - sMinAmVcVol;
		int hfRange = MAX_HFP_SCO_VOICE_CALL_VOLUME - MIN_HFP_SCO_VOICE_CALL_VOLUME;
		@@ -1025,13 +1053,13 @@ public class HeadsetClientStateMachine extends StateMachine {
		}
		}

		int amVol = sAudioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);
		int amVol = mAudioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);
		deferMessage(
		obtainMessage(HeadsetClientStateMachine.SET_SPEAKER_VOLUME, amVol, 0));
		// Mic is either in ON state (full volume) or OFF state. There is no way in
		// Android to change the MIC volume.
		deferMessage(obtainMessage(HeadsetClientStateMachine.SET_MIC_VOLUME,
		sAudioManager.isMicrophoneMute() ? 0 : 15, 0));
		mAudioManager.isMicrophoneMute() ? 0 : 15, 0));
		// query subscriber info
		deferMessage(obtainMessage(HeadsetClientStateMachine.SUBSCRIBER_INFO));
		transitionTo(mConnected);
		@@ -1361,11 +1389,11 @@ public class HeadsetClientStateMachine extends StateMachine {
		if (event.valueInt == HeadsetClientHalConstants.VOLUME_TYPE_SPK) {
		mCommandedSpeakerVolume = hfToAmVol(event.valueInt2);
		Log.d(TAG, "AM volume set to " + mCommandedSpeakerVolume);
		sAudioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,
		mAudioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,
		+mCommandedSpeakerVolume, AudioManager.FLAG_SHOW_UI);
		} else if (event.valueInt
		== HeadsetClientHalConstants.VOLUME_TYPE_MIC) {
		sAudioManager.setMicrophoneMute(event.valueInt2 == 0);
		mAudioManager.setMicrophoneMute(event.valueInt2 == 0);
		}
		break;
		case StackEvent.EVENT_TYPE_CMD_RESULT:
		@@ -1495,7 +1523,7 @@ public class HeadsetClientStateMachine extends StateMachine {

		// We need to set the volume after switching into HFP mode as some Audio HALs
		// reset the volume to a known-default on mode switch.
		final int amVol = sAudioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);
		final int amVol = mAudioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);
		final int hfVol = amToHfVol(amVol);

		if (DBG) {
		@@ -1505,18 +1533,19 @@ public class HeadsetClientStateMachine extends StateMachine {
		if (DBG) {
		Log.d(TAG, "Setting sampling rate as 16000");
		}
		sAudioManager.setParameters("hfp_set_sampling_rate=16000");
		mAudioManager.setParameters("hfp_set_sampling_rate=16000");
		} else {
		if (DBG) {
		Log.d(TAG, "Setting sampling rate as 8000");
		}
		sAudioManager.setParameters("hfp_set_sampling_rate=8000");
		mAudioManager.setParameters("hfp_set_sampling_rate=8000");
		}
		if (DBG) {
		Log.d(TAG, "hf_volume " + hfVol);
		}
		routeHfpAudio(true);
		sAudioManager.setParameters("hfp_volume=" + hfVol);
		mAudioFocusRequest = requestAudioFocus();
		mAudioManager.setParameters("hfp_volume=" + hfVol);
		transitionTo(mAudioOn);
		break;

		@@ -1590,6 +1619,7 @@ public class HeadsetClientStateMachine extends StateMachine {
		*/
		if (NativeInterface.disconnectAudioNative(getByteAddress(mCurrentDevice))) {
		routeHfpAudio(false);
		returnAudioFocusIfNecessary();
		}
		break;

		@@ -1661,6 +1691,7 @@ public class HeadsetClientStateMachine extends StateMachine {
		// is not much we can do here since dropping the call without user consent
		// even if the audio connection snapped may not be a good idea.
		routeHfpAudio(false);
		returnAudioFocusIfNecessary();
		transitionTo(mConnected);
		break;