| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car; |
| |
| import android.content.Context; |
| import android.hardware.automotive.vehicle.V2_0.VehicleAudioContextFlag; |
| import android.media.AudioManager; |
| import android.media.IAudioService; |
| import android.media.IVolumeController; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.provider.Settings; |
| import android.telecom.TelecomManager; |
| import android.util.ArrayMap; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.KeyEvent; |
| |
| import com.android.car.CarVolumeService.CarVolumeController; |
| import com.android.car.hal.AudioHalService; |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.io.PrintWriter; |
| import java.util.Map; |
| |
| /** |
| * A factory class to create {@link com.android.car.CarVolumeService.CarVolumeController} based |
| * on car properties. |
| */ |
| public class CarVolumeControllerFactory { |
| // STOPSHIP if true. |
| private static final boolean DBG = false; |
| |
| public static CarVolumeController createCarVolumeController(Context context, |
| CarAudioService audioService, AudioHalService audioHal, CarInputService inputService) { |
| final boolean volumeSupported = audioHal.isAudioVolumeSupported(); |
| |
| // Case 1: Car Audio Module does not support volume controls |
| if (!volumeSupported) { |
| return new SimpleCarVolumeController(context); |
| } |
| return new CarExternalVolumeController(context, audioService, audioHal, inputService); |
| } |
| |
| public static boolean interceptVolKeyBeforeDispatching(Context context) { |
| Log.d(CarLog.TAG_AUDIO, "interceptVolKeyBeforeDispatching"); |
| |
| TelecomManager telecomManager = (TelecomManager) |
| context.getSystemService(Context.TELECOM_SERVICE); |
| if (telecomManager != null && telecomManager.isRinging()) { |
| // If an incoming call is ringing, either VOLUME key means |
| // "silence ringer". This is consistent with current android phone's behavior |
| Log.i(CarLog.TAG_AUDIO, "interceptKeyBeforeQueueing:" |
| + " VOLUME key-down while ringing: Silence ringer!"); |
| |
| // Silence the ringer. (It's safe to call this |
| // even if the ringer has already been silenced.) |
| telecomManager.silenceRinger(); |
| return true; |
| } |
| return false; |
| } |
| |
| public static boolean isVolumeKey(KeyEvent event) { |
| return event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_DOWN |
| || event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_UP; |
| } |
| |
| /** |
| * To control volumes through {@link android.media.AudioManager} when car audio module does not |
| * support volume controls. |
| */ |
| public static final class SimpleCarVolumeController extends CarVolumeController { |
| private final AudioManager mAudioManager; |
| private final Context mContext; |
| |
| public SimpleCarVolumeController(Context context) { |
| mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); |
| mContext = context; |
| } |
| |
| @Override |
| void init() { |
| } |
| |
| @Override |
| void release() { |
| } |
| |
| @Override |
| public void setStreamVolume(int stream, int index, int flags) { |
| if (DBG) { |
| Log.d(CarLog.TAG_AUDIO, "setStreamVolume " + stream + " " + index + " " + flags); |
| } |
| mAudioManager.setStreamVolume(stream, index, flags); |
| } |
| |
| @Override |
| public int getStreamVolume(int stream) { |
| return mAudioManager.getStreamVolume(stream); |
| } |
| |
| @Override |
| public void setVolumeController(IVolumeController controller) { |
| mAudioManager.setVolumeController(controller); |
| } |
| |
| @Override |
| public int getStreamMaxVolume(int stream) { |
| return mAudioManager.getStreamMaxVolume(stream); |
| } |
| |
| @Override |
| public int getStreamMinVolume(int stream) { |
| return mAudioManager.getStreamMinVolume(stream); |
| } |
| |
| @Override |
| public boolean onKeyEvent(KeyEvent event) { |
| if (!isVolumeKey(event)) { |
| return false; |
| } |
| handleVolumeKeyDefault(event); |
| return true; |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| writer.println("Volume controller:" + SimpleCarVolumeController.class.getSimpleName()); |
| // nothing else to dump |
| } |
| |
| private void handleVolumeKeyDefault(KeyEvent event) { |
| if (event.getAction() != KeyEvent.ACTION_DOWN |
| || interceptVolKeyBeforeDispatching(mContext)) { |
| return; |
| } |
| |
| boolean volUp = event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_UP; |
| int flags = AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND |
| | AudioManager.FLAG_FROM_KEY; |
| IAudioService audioService = getAudioService(); |
| String pkgName = mContext.getOpPackageName(); |
| try { |
| if (audioService != null) { |
| audioService.adjustSuggestedStreamVolume( |
| volUp ? AudioManager.ADJUST_RAISE : AudioManager.ADJUST_LOWER, |
| AudioManager.USE_DEFAULT_STREAM_TYPE, flags, pkgName, CarLog.TAG_INPUT); |
| } |
| } catch (RemoteException e) { |
| Log.e(CarLog.TAG_INPUT, "Error calling android audio service.", e); |
| } |
| } |
| |
| private static IAudioService getAudioService() { |
| IAudioService audioService = IAudioService.Stub.asInterface( |
| ServiceManager.checkService(Context.AUDIO_SERVICE)); |
| if (audioService == null) { |
| Log.w(CarLog.TAG_INPUT, "Unable to find IAudioService interface."); |
| } |
| return audioService; |
| } |
| } |
| |
| /** |
| * The car volume controller to use when the car audio modules supports volume controls. |
| * |
| * Depending on whether the car support audio context and has persistent memory, we need to |
| * handle per context volume change properly. |
| * |
| * Regardless whether car supports audio context or not, we need to keep per audio context |
| * volume internally. If we only support single channel, then we only send the volume change |
| * event when that stream is in focus; Otherwise, we need to adjust the stream volume either on |
| * software mixer level or send it the car audio module if the car support audio context |
| * and multi channel. TODO: Add support for multi channel. bug: 32095376 |
| * |
| * Per context volume should be persisted, so the volumes can stay the same across boots. |
| * Depending on the hardware property, this can be persisted on car side (or/and android side). |
| * TODO: we need to define one single source of truth if the car has memory. bug: 32091839 |
| */ |
| public static class CarExternalVolumeController extends CarVolumeController |
| implements CarInputService.KeyEventListener, AudioHalService.AudioHalVolumeListener, |
| CarAudioService.AudioContextChangeListener { |
| private static final String TAG = CarLog.TAG_AUDIO + ".VolCtrl"; |
| private static final int MSG_UPDATE_VOLUME = 0; |
| private static final int MSG_UPDATE_HAL = 1; |
| private static final int MSG_SUPPRESS_UI_FOR_VOLUME = 2; |
| private static final int MSG_VOLUME_UI_RESTORE = 3; |
| |
| // within 5 seconds after a UI invisible volume change (e.g., due to audio context change, |
| // or explicitly flag), we will not show UI in respond to that particular volume changes |
| // events from HAL (context and volume index must match). |
| private static final int HIDE_VOLUME_UI_MILLISECONDS = 5 * 1000; // 5 seconds |
| |
| private final Context mContext; |
| private final AudioRoutingPolicy mPolicy; |
| private final AudioHalService mHal; |
| private final CarInputService mInputService; |
| private final CarAudioService mAudioService; |
| |
| private int mSupportedAudioContext; |
| |
| private boolean mHasExternalMemory; |
| private boolean mMasterVolumeOnly; |
| |
| @GuardedBy("this") |
| private int mCurrentContext = CarVolumeService.DEFAULT_CAR_AUDIO_CONTEXT; |
| // current logical volume, the key is car audio context |
| @GuardedBy("this") |
| private final SparseArray<Integer> mCurrentCarContextVolume = |
| new SparseArray<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); |
| // stream volume limit, the key is car audio context type |
| @GuardedBy("this") |
| private final SparseArray<Integer> mCarContextVolumeMax = |
| new SparseArray<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); |
| // stream volume limit, the key is car audio context type |
| @GuardedBy("this") |
| private final RemoteCallbackList<IVolumeController> mVolumeControllers = |
| new RemoteCallbackList<>(); |
| @GuardedBy("this") |
| private int[] mSuppressUiForVolume = new int[2]; |
| @GuardedBy("this") |
| private boolean mShouldSuppress = false; |
| private HandlerThread mVolumeThread; |
| private Handler mHandler; |
| |
| /** |
| * Convert an car context to the car stream. |
| * |
| * @return If car supports audio context, then it returns the car audio context. Otherwise, |
| * it returns the physical stream that maps to this logical stream. |
| */ |
| private int carContextToCarStream(int carContext) { |
| if (mSupportedAudioContext == 0) { |
| int physicalStream = mPolicy.getPhysicalStreamForLogicalStream( |
| AudioHalService.carContextToCarUsage(carContext)); |
| return physicalStream; |
| } else { |
| return carContext == VehicleAudioContextFlag.UNKNOWN_FLAG ? |
| mCurrentContext : carContext; |
| } |
| } |
| |
| private void writeVolumeToSettings(int carContext, int volume) { |
| String key = VolumeUtils.CAR_AUDIO_CONTEXT_SETTINGS.get(carContext); |
| if (key != null) { |
| Settings.Global.putInt(mContext.getContentResolver(), key, volume); |
| } |
| } |
| |
| /** |
| * All updates to external components should be posted to this handler to avoid holding |
| * the internal lock while sending updates. |
| */ |
| private final class VolumeHandler extends Handler { |
| public VolumeHandler(Looper looper) { |
| super(looper); |
| } |
| @Override |
| public void handleMessage(Message msg) { |
| int stream; |
| int volume; |
| switch (msg.what) { |
| case MSG_UPDATE_VOLUME: |
| // arg1 is car context |
| stream = msg.arg1; |
| volume = (int) msg.obj; |
| int flag = msg.arg2; |
| synchronized (CarExternalVolumeController.this) { |
| // the suppressed stream is sending us update.... |
| if (mShouldSuppress && stream == mSuppressUiForVolume[0]) { |
| // the volume matches, we want to suppress it |
| if (volume == mSuppressUiForVolume[1]) { |
| if (DBG) { |
| Log.d(TAG, "Suppress Volume UI for stream " |
| + stream + " volume: " + volume); |
| } |
| flag &= ~AudioManager.FLAG_SHOW_UI; |
| } |
| // No matter if the volume matches or not, we will stop suppressing |
| // UI for this stream now. After an audio context switch, user may |
| // quickly turn the nob, -1 and +1, it ends the same volume, |
| // but we should show the UI for both. |
| removeMessages(MSG_VOLUME_UI_RESTORE); |
| mShouldSuppress = false; |
| } |
| } |
| final int size = mVolumeControllers.beginBroadcast(); |
| try { |
| for (int i = 0; i < size; i++) { |
| try { |
| mVolumeControllers.getBroadcastItem(i).volumeChanged( |
| VolumeUtils.carContextToAndroidStream(stream), flag); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } finally { |
| mVolumeControllers.finishBroadcast(); |
| } |
| break; |
| case MSG_UPDATE_HAL: |
| stream = msg.arg1; |
| volume = msg.arg2; |
| synchronized (CarExternalVolumeController.this) { |
| if (mMasterVolumeOnly) { |
| stream = 0; |
| } |
| } |
| mHal.setStreamVolume(stream, volume); |
| break; |
| case MSG_SUPPRESS_UI_FOR_VOLUME: |
| if (DBG) { |
| Log.d(TAG, "Suppress stream volume " + msg.arg1 + " " + msg.arg2); |
| } |
| synchronized (CarExternalVolumeController.this) { |
| mShouldSuppress = true; |
| mSuppressUiForVolume[0] = msg.arg1; |
| mSuppressUiForVolume[1] = msg.arg2; |
| } |
| removeMessages(MSG_VOLUME_UI_RESTORE); |
| sendMessageDelayed(obtainMessage(MSG_VOLUME_UI_RESTORE), |
| HIDE_VOLUME_UI_MILLISECONDS); |
| break; |
| case MSG_VOLUME_UI_RESTORE: |
| if (DBG) { |
| Log.d(TAG, "Volume Ui suppress expired"); |
| } |
| synchronized (CarExternalVolumeController.this) { |
| mShouldSuppress = false; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| public CarExternalVolumeController(Context context, CarAudioService audioService, |
| AudioHalService hal, CarInputService inputService) { |
| mContext = context; |
| mAudioService = audioService; |
| mPolicy = audioService.getAudioRoutingPolicy(); |
| mHal = hal; |
| mInputService = inputService; |
| } |
| |
| @Override |
| void init() { |
| mSupportedAudioContext = mHal.getSupportedAudioVolumeContexts(); |
| mHasExternalMemory = mHal.isExternalAudioVolumePersistent(); |
| mMasterVolumeOnly = mHal.isAudioVolumeMasterOnly(); |
| synchronized (this) { |
| mVolumeThread = new HandlerThread(TAG); |
| mVolumeThread.start(); |
| mHandler = new VolumeHandler(mVolumeThread.getLooper()); |
| initVolumeLimitLocked(); |
| initCurrentVolumeLocked(); |
| } |
| mInputService.setVolumeKeyListener(this); |
| mHal.setVolumeListener(this); |
| mAudioService.setAudioContextChangeListener(Looper.getMainLooper(), this); |
| } |
| |
| @Override |
| void release() { |
| synchronized (this) { |
| if (mVolumeThread != null) { |
| mVolumeThread.quit(); |
| } |
| } |
| } |
| |
| private void initVolumeLimitLocked() { |
| for (int i : VolumeUtils.CAR_AUDIO_CONTEXT) { |
| int carStream = carContextToCarStream(i); |
| Integer volumeMax = mHal.getStreamMaxVolume(carStream); |
| int max = volumeMax == null ? 0 : volumeMax; |
| if (max < 0) { |
| max = 0; |
| } |
| // get default stream volume limit first. |
| mCarContextVolumeMax.put(i, max); |
| } |
| } |
| |
| private void initCurrentVolumeLocked() { |
| if (mHasExternalMemory) { |
| // TODO: read per context volume from audio hal. bug: 32091839 |
| } else { |
| // when vhal does not work, get call can take long. For that case, |
| // for the same physical streams, cache initial get results |
| Map<Integer, Integer> volumesPerCarStream = |
| new ArrayMap<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); |
| for (int i : VolumeUtils.CAR_AUDIO_CONTEXT) { |
| String key = VolumeUtils.CAR_AUDIO_CONTEXT_SETTINGS.get(i); |
| if (key != null) { |
| int vol = Settings.Global.getInt(mContext.getContentResolver(), key, -1); |
| if (vol >= 0) { |
| // Read valid volume for this car context from settings and continue; |
| mCurrentCarContextVolume.put(i, vol); |
| if (DBG) { |
| Log.d(TAG, "init volume from settings, car audio context: " |
| + i + " volume: " + vol); |
| } |
| continue; |
| } |
| } |
| |
| // There is no settings for this car context. Use the current physical car |
| // stream volume as initial value instead, and put the volume into settings. |
| int carStream = carContextToCarStream(i); |
| Integer volume = volumesPerCarStream.get(carStream); |
| if (volume == null) { |
| volume = Integer.valueOf(mHal.getStreamVolume(mMasterVolumeOnly ? 0 : |
| carStream)); |
| volumesPerCarStream.put(carStream, volume); |
| } |
| mCurrentCarContextVolume.put(i, volume); |
| writeVolumeToSettings(i, volume); |
| if (DBG) { |
| Log.d(TAG, "init volume from physical stream," + |
| " car audio context: " + i + " volume: " + volume); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void setStreamVolume(int stream, int index, int flags) { |
| synchronized (this) { |
| int carContext; |
| // Currently car context and android logical stream are not |
| // one-to-one mapping. In this API, Android side asks us to change a logical stream |
| // volume. If the current car audio context maps to this logical stream, then we |
| // change the volume for the current car audio context. Otherwise, we change the |
| // volume for the primary mapped car audio context. |
| if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { |
| carContext = mCurrentContext; |
| } else { |
| carContext = VolumeUtils.androidStreamToCarContext(stream); |
| } |
| if (DBG) { |
| Log.d(TAG, "Receive setStreamVolume logical stream: " + stream + " index: " |
| + index + " flags: " + flags + " maps to car context: " + carContext); |
| } |
| setStreamVolumeInternalLocked(carContext, index, flags); |
| } |
| } |
| |
| private void setStreamVolumeInternalLocked(int carContext, int index, int flags) { |
| if (mCarContextVolumeMax.get(carContext) == null) { |
| Log.e(TAG, "Stream type not supported " + carContext); |
| return; |
| } |
| int limit = mCarContextVolumeMax.get(carContext); |
| if (index > limit) { |
| Log.w(TAG, "Volume exceeds volume limit. context: " + carContext |
| + " index: " + index + " limit: " + limit); |
| index = limit; |
| } |
| |
| if (index < 0) { |
| index = 0; |
| } |
| |
| if (mCurrentCarContextVolume.get(carContext) == index) { |
| return; |
| } |
| |
| int carStream = carContextToCarStream(carContext); |
| if (DBG) { |
| Log.d(TAG, "Change car stream volume, stream: " + carStream + " volume:" + index); |
| } |
| // For single channel, only adjust the volume when the audio context is the current one. |
| if (mCurrentContext == carContext) { |
| if (DBG) { |
| Log.d(TAG, "Sending volume change to HAL"); |
| } |
| mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_HAL, carStream, index)); |
| if ((flags & AudioManager.FLAG_SHOW_UI) != 0) { |
| if (mShouldSuppress && mSuppressUiForVolume[0] == carContext) { |
| // In this case, the caller explicitly says "Show_UI" for the same context. |
| // We will respect the flag, and let the UI show. |
| mShouldSuppress = false; |
| mHandler.removeMessages(MSG_VOLUME_UI_RESTORE); |
| } |
| } else { |
| mHandler.sendMessage(mHandler.obtainMessage(MSG_SUPPRESS_UI_FOR_VOLUME, |
| carContext, index)); |
| } |
| } |
| // Record the current volume internally. |
| mCurrentCarContextVolume.put(carContext, index); |
| writeVolumeToSettings(mCurrentContext, index); |
| } |
| |
| @Override |
| public int getStreamVolume(int stream) { |
| synchronized (this) { |
| if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { |
| return mCurrentCarContextVolume.get(mCurrentContext); |
| } |
| return mCurrentCarContextVolume.get(VolumeUtils.androidStreamToCarContext(stream)); |
| } |
| } |
| |
| @Override |
| public void setVolumeController(IVolumeController controller) { |
| synchronized (this) { |
| mVolumeControllers.register(controller); |
| } |
| } |
| |
| @Override |
| public void onVolumeChange(int carStream, int volume, int volumeState) { |
| synchronized (this) { |
| int flag = getVolumeUpdateFlag(true); |
| if (DBG) { |
| Log.d(TAG, "onVolumeChange carStream: " + carStream + " volume: " + volume |
| + " volumeState: " + volumeState |
| + " suppressUI? " + mShouldSuppress |
| + " stream: " + mSuppressUiForVolume[0] |
| + " volume: " + mSuppressUiForVolume[1]); |
| } |
| int currentCarStream = carContextToCarStream(mCurrentContext); |
| if (mMasterVolumeOnly) { //for master volume only H/W, always assume current stream |
| carStream = currentCarStream; |
| } |
| |
| // Map the UNKNOWN context to the current context. |
| if (mSupportedAudioContext != 0 |
| && carStream == VehicleAudioContextFlag.UNKNOWN_FLAG) { |
| carStream = mCurrentContext; |
| } |
| |
| if (currentCarStream == carStream) { |
| mCurrentCarContextVolume.put(mCurrentContext, volume); |
| writeVolumeToSettings(mCurrentContext, volume); |
| mHandler.sendMessage( |
| mHandler.obtainMessage(MSG_UPDATE_VOLUME, mCurrentContext, flag, |
| new Integer(volume))); |
| } else { |
| // Hal is telling us a car stream volume has changed, but it is not the current |
| // stream. |
| // TODO: b/63778359 |
| Log.w(TAG, "Car stream" + carStream |
| + " volume changed, but it is not current stream, ignored."); |
| } |
| } |
| } |
| |
| private int getVolumeUpdateFlag(boolean showUi) { |
| return showUi? AudioManager.FLAG_SHOW_UI : 0; |
| } |
| |
| @Override |
| public void onVolumeLimitChange(int streamNumber, int volume) { |
| // TODO: How should this update be sent to SystemUI? bug: 32095237 |
| // maybe send a volume update without showing UI. |
| synchronized (this) { |
| initVolumeLimitLocked(); |
| } |
| } |
| |
| @Override |
| public int getStreamMaxVolume(int stream) { |
| synchronized (this) { |
| if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { |
| return mCarContextVolumeMax.get(mCurrentContext); |
| } else { |
| return mCarContextVolumeMax.get(VolumeUtils.androidStreamToCarContext(stream)); |
| } |
| } |
| } |
| |
| @Override |
| public int getStreamMinVolume(int stream) { |
| return 0; // Min value is always zero. |
| } |
| |
| @Override |
| public boolean onKeyEvent(KeyEvent event) { |
| if (!isVolumeKey(event)) { |
| return false; |
| } |
| final boolean down = event.getAction() == KeyEvent.ACTION_DOWN; |
| if (DBG) { |
| Log.d(TAG, "Receive volume keyevent " + event.toString()); |
| } |
| // TODO: properly handle long press on volume key, bug: 32095989 |
| if (!down || interceptVolKeyBeforeDispatching(mContext)) { |
| return true; |
| } |
| |
| synchronized (this) { |
| int currentVolume = mCurrentCarContextVolume.get(mCurrentContext); |
| switch (event.getKeyCode()) { |
| case KeyEvent.KEYCODE_VOLUME_UP: |
| setStreamVolumeInternalLocked(mCurrentContext, currentVolume + 1, |
| getVolumeUpdateFlag(true)); |
| break; |
| case KeyEvent.KEYCODE_VOLUME_DOWN: |
| setStreamVolumeInternalLocked(mCurrentContext, currentVolume - 1, |
| getVolumeUpdateFlag(true)); |
| break; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public void onContextChange(int primaryFocusContext, int primaryFocusPhysicalStream) { |
| synchronized (this) { |
| if(DBG) { |
| Log.d(TAG, "Audio context changed from " + mCurrentContext + " to: " |
| + primaryFocusContext + " physical: " + primaryFocusPhysicalStream); |
| } |
| // if primaryFocusContext is 0, it means nothing is playing or holding focus, |
| // we will keep the last focus context and if the user changes the volume |
| // it will go to the last audio context. |
| if (primaryFocusContext == mCurrentContext || primaryFocusContext == 0) { |
| return; |
| } |
| int oldContext = mCurrentContext; |
| mCurrentContext = primaryFocusContext; |
| // if car supports audio context and has external memory, then we don't need to do |
| // anything. |
| if(mSupportedAudioContext != 0 && mHasExternalMemory) { |
| if (DBG) { |
| Log.d(TAG, "Car support audio context and has external memory," + |
| " no volume change needed from car service"); |
| } |
| return; |
| } |
| |
| // Otherwise, we need to tell Hal what the correct volume is for the new context. |
| int currentVolume = mCurrentCarContextVolume.get(primaryFocusContext); |
| |
| int carStreamNumber = (mSupportedAudioContext == 0) ? primaryFocusPhysicalStream : |
| primaryFocusContext; |
| if (DBG) { |
| Log.d(TAG, "Change volume from: " |
| + mCurrentCarContextVolume.get(oldContext) |
| + " to: "+ currentVolume); |
| } |
| mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_HAL, carStreamNumber, |
| currentVolume)); |
| mHandler.sendMessage(mHandler.obtainMessage(MSG_SUPPRESS_UI_FOR_VOLUME, |
| mCurrentContext, currentVolume)); |
| } |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| writer.println("Volume controller:" + |
| CarExternalVolumeController.class.getSimpleName()); |
| synchronized (this) { |
| writer.println("mSupportedAudioContext:0x" + |
| Integer.toHexString(mSupportedAudioContext) + |
| ",mHasExternalMemory:" + mHasExternalMemory + |
| ",mMasterVolumeOnly:" + mMasterVolumeOnly); |
| writer.println("mCurrentContext:0x" + Integer.toHexString(mCurrentContext)); |
| writer.println("mCurrentCarContextVolume:"); |
| dumpVolumes(writer, mCurrentCarContextVolume); |
| writer.println("mCarContextVolumeMax:"); |
| dumpVolumes(writer, mCarContextVolumeMax); |
| writer.println("Number of volume controllers:" + |
| mVolumeControllers.getRegisteredCallbackCount()); |
| } |
| } |
| |
| private void dumpVolumes(PrintWriter writer, SparseArray<Integer> array) { |
| for (int i = 0; i < array.size(); i++) { |
| writer.println("0x" + Integer.toHexString(array.keyAt(i)) + ":" + array.valueAt(i)); |
| } |
| } |
| } |
| } |
