1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.car.audio; 17 18 import android.car.Car; 19 import android.car.media.CarAudioManager; 20 import android.content.pm.PackageManager; 21 import android.media.AudioFocusInfo; 22 import android.media.AudioManager; 23 import android.os.Bundle; 24 25 import androidx.annotation.NonNull; 26 27 import com.android.car.audio.CarAudioContext.AudioContext; 28 29 import java.io.PrintWriter; 30 import java.util.ArrayList; 31 import java.util.List; 32 import java.util.Objects; 33 34 final class FocusEntry { 35 private final AudioFocusInfo mAudioFocusInfo; 36 private final int mAudioContext; 37 38 private final List<FocusEntry> mBlockers; 39 private final PackageManager mPackageManager; 40 private boolean mIsDucked; 41 FocusEntry(@onNull AudioFocusInfo audioFocusInfo, @AudioContext int context, @NonNull PackageManager packageManager)42 FocusEntry(@NonNull AudioFocusInfo audioFocusInfo, @AudioContext int context, 43 @NonNull PackageManager packageManager) { 44 Objects.requireNonNull(audioFocusInfo, "AudioFocusInfo cannot be null"); 45 Objects.requireNonNull(packageManager, "PackageManager cannot be null"); 46 mAudioFocusInfo = audioFocusInfo; 47 mAudioContext = context; 48 mBlockers = new ArrayList<>(); 49 mPackageManager = packageManager; 50 } 51 52 @AudioContext getAudioContext()53 int getAudioContext() { 54 return mAudioContext; 55 } 56 getAudioFocusInfo()57 AudioFocusInfo getAudioFocusInfo() { 58 return mAudioFocusInfo; 59 } 60 isUnblocked()61 boolean isUnblocked() { 62 return mBlockers.isEmpty(); 63 } 64 addBlocker(FocusEntry blocker)65 void addBlocker(FocusEntry blocker) { 66 mBlockers.add(blocker); 67 } 68 removeBlocker(FocusEntry blocker)69 void removeBlocker(FocusEntry blocker) { 70 mBlockers.remove(blocker); 71 } 72 getClientId()73 String getClientId() { 74 return mAudioFocusInfo.getClientId(); 75 } 76 isDucked()77 boolean isDucked() { 78 return mIsDucked; 79 } 80 setDucked(boolean ducked)81 void setDucked(boolean ducked) { 82 mIsDucked = ducked; 83 } 84 wantsPauseInsteadOfDucking()85 boolean wantsPauseInsteadOfDucking() { 86 return (mAudioFocusInfo.getFlags() & AudioManager.AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS) 87 != 0; 88 } 89 receivesDuckEvents()90 boolean receivesDuckEvents() { 91 Bundle bundle = mAudioFocusInfo.getAttributes().getBundle(); 92 93 if (bundle == null) { 94 return false; 95 } 96 97 if (!bundle.getBoolean(CarAudioManager.AUDIOFOCUS_EXTRA_RECEIVE_DUCKING_EVENTS)) { 98 return false; 99 } 100 101 return (mPackageManager.checkPermission( 102 Car.PERMISSION_RECEIVE_CAR_AUDIO_DUCKING_EVENTS, 103 mAudioFocusInfo.getPackageName()) 104 == PackageManager.PERMISSION_GRANTED); 105 } 106 getUsageName()107 String getUsageName() { 108 return mAudioFocusInfo.getAttributes().usageToString(); 109 } 110 dump(String indent, PrintWriter writer)111 public void dump(String indent, PrintWriter writer) { 112 writer.printf("%s%s - %s\n", indent, getClientId(), getUsageName()); 113 // Prints in single line 114 writer.printf("%s\tReceives Duck Events: %b, ", indent, receivesDuckEvents()); 115 writer.printf("Wants Pause Instead of Ducking: %b, ", wantsPauseInsteadOfDucking()); 116 writer.printf("Is Ducked: %b\n", isDucked()); 117 } 118 } 119