| /* |
| * Copyright (C) 2015 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.car.media.CarAudioManager; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.media.AudioAttributes; |
| import android.util.Log; |
| |
| import java.io.PrintWriter; |
| import java.util.Arrays; |
| |
| /** |
| * Holds audio routing policy from config.xml. R.array.audioRoutingPolicy can contain |
| * multiple policies and VEHICLE_PROPERTY_AUDIO_HW_VARIANT decide which one to use. |
| */ |
| public class AudioRoutingPolicy { |
| |
| private final int USAGE_TYPE_INVALID = -1; |
| |
| private static final String ROUTING_POLICY_FOR_MOCKED_TEST = |
| "0:call,media,radio,unknown#1:nav_guidance,voice_command,alarm,notification,system,safety"; |
| |
| /** Physical stream to logical streams mapping */ |
| private final int[][] mLogicalStreams; |
| /** Logical stream to physical stream mapping */ |
| private final int[] mPhysicalStreamForLogicalStream; |
| |
| public static AudioRoutingPolicy create(Context context, int policyNumber) { |
| final Resources res = context.getResources(); |
| String[] policies = res.getStringArray(R.array.audioRoutingPolicy); |
| String policy; |
| if (policyNumber > (policies.length - 1)) { |
| Log.e(CarLog.TAG_AUDIO, "AudioRoutingPolicy.create got wrong policy number:" + |
| policyNumber + ", num of avaiable policies:" + policies.length); |
| policy = policies[0]; |
| } else if (policyNumber < 0) { // this is special case for mocked testing. |
| policy = ROUTING_POLICY_FOR_MOCKED_TEST; |
| } else { |
| policy = policies[policyNumber]; |
| } |
| return new AudioRoutingPolicy(policy); |
| } |
| |
| private static int getStreamType(String str) { |
| switch (str) { |
| case "call": |
| return CarAudioManager.CAR_AUDIO_USAGE_VOICE_CALL; |
| case "media": |
| return CarAudioManager.CAR_AUDIO_USAGE_MUSIC; |
| case "radio": |
| return CarAudioManager.CAR_AUDIO_USAGE_RADIO; |
| case "nav_guidance": |
| return CarAudioManager.CAR_AUDIO_USAGE_NAVIGATION_GUIDANCE; |
| case "voice_command": |
| return CarAudioManager.CAR_AUDIO_USAGE_VOICE_COMMAND; |
| case "alarm": |
| return CarAudioManager.CAR_AUDIO_USAGE_ALARM; |
| case "notification": |
| return CarAudioManager.CAR_AUDIO_USAGE_NOTIFICATION; |
| case "system": |
| return CarAudioManager.CAR_AUDIO_USAGE_SYSTEM_SOUND; |
| case "safety": |
| return CarAudioManager.CAR_AUDIO_USAGE_SYSTEM_SAFETY_ALERT; |
| case "unknown": |
| return CarAudioManager.CAR_AUDIO_USAGE_DEFAULT; |
| } |
| throw new IllegalArgumentException("Wrong audioRoutingPolicy config, unknown stream type:" + |
| str); |
| } |
| |
| private AudioRoutingPolicy(String policy) { |
| String[] streamPolicies = policy.split("#"); |
| final int nPhysicalStreams = streamPolicies.length; |
| mLogicalStreams = new int[nPhysicalStreams][]; |
| mPhysicalStreamForLogicalStream = new int[CarAudioManager.CAR_AUDIO_USAGE_MAX + 1]; |
| for (int i = 0; i < mPhysicalStreamForLogicalStream.length; i++) { |
| mPhysicalStreamForLogicalStream[i] = USAGE_TYPE_INVALID; |
| } |
| int defaultStreamType = USAGE_TYPE_INVALID; |
| for (String streamPolicy : streamPolicies) { |
| String[] numberVsStreams = streamPolicy.split(":"); |
| int physicalStream = Integer.parseInt(numberVsStreams[0]); |
| String[] logicalStreams = numberVsStreams[1].split(","); |
| int[] logicalStreamsInt = new int[logicalStreams.length]; |
| for (int i = 0; i < logicalStreams.length; i++) { |
| int logicalStreamNumber = getStreamType(logicalStreams[i]); |
| if (logicalStreamNumber == CarAudioManager.CAR_AUDIO_USAGE_DEFAULT) { |
| defaultStreamType = physicalStream; |
| } |
| logicalStreamsInt[i] = logicalStreamNumber; |
| mPhysicalStreamForLogicalStream[logicalStreamNumber] = physicalStream; |
| } |
| Arrays.sort(logicalStreamsInt); |
| mLogicalStreams[physicalStream] = logicalStreamsInt; |
| } |
| if (defaultStreamType == USAGE_TYPE_INVALID) { |
| Log.e(CarLog.TAG_AUDIO, "Audio routing policy did not include unknown"); |
| defaultStreamType = 0; |
| } |
| for (int i = 0; i < mPhysicalStreamForLogicalStream.length; i++) { |
| if (mPhysicalStreamForLogicalStream[i] == USAGE_TYPE_INVALID) { |
| Log.w(CarLog.TAG_AUDIO, "Audio routing policy did not cover logical stream " + i); |
| mPhysicalStreamForLogicalStream[i] = defaultStreamType; |
| } |
| } |
| } |
| |
| public int getPhysicalStreamsCount() { |
| return mLogicalStreams.length; |
| } |
| |
| public int[] getLogicalStreamsForPhysicalStream(int physicalStreamNumber) { |
| return mLogicalStreams[physicalStreamNumber]; |
| } |
| |
| public int getPhysicalStreamForLogicalStream(int logicalStream) { |
| return mPhysicalStreamForLogicalStream[logicalStream]; |
| } |
| |
| public void dump(PrintWriter writer) { |
| writer.println("*AudioRoutingPolicy*"); |
| writer.println("**Logical Streams**"); |
| for (int i = 0; i < mLogicalStreams.length; i++) { |
| writer.print("physical stream " + i + ":"); |
| for (int logicalStream : mLogicalStreams[i]) { |
| writer.print(Integer.toString(logicalStream) + ","); |
| } |
| writer.println(""); |
| } |
| } |
| } |