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Subscribe to AudioManager to listen to currently selected device

Browse Source 
Bug: b/255495104
Test: manually tested
Change-Id: I360b1ef592e30f4ad39136ec0def2f3fa74df912
This commit is contained in:
Alex Dadukin
2023-03-01 17:25:16 +00:00
parent f2de79ebee
commit 6c1195c024
2 changed files with 163 additions and 0 deletions
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112
services/core/java/com/android/server/media/AudioAttributesUtils.java Normal file
View File

@@ -0,0 +1,112 @@
/*
* Copyright (C) 2023 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.server.media;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.media.AudioAttributes;
import android.media.AudioDeviceAttributes;
import android.media.AudioDeviceInfo;
import android.media.MediaRoute2Info;
/* package */ final class AudioAttributesUtils {
/* package */ static final AudioAttributes ATTRIBUTES_MEDIA = new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_MEDIA)
.build();
private AudioAttributesUtils() {
// no-op to prevent instantiation.
}
@MediaRoute2Info.Type
/* package */ static int mapToMediaRouteType(
@NonNull AudioDeviceAttributes audioDeviceAttributes) {
switch (audioDeviceAttributes.getType()) {
case AudioDeviceInfo.TYPE_BUILTIN_EARPIECE:
case AudioDeviceInfo.TYPE_BUILTIN_SPEAKER:
return MediaRoute2Info.TYPE_BUILTIN_SPEAKER;
case AudioDeviceInfo.TYPE_WIRED_HEADSET:
return MediaRoute2Info.TYPE_WIRED_HEADSET;
case AudioDeviceInfo.TYPE_WIRED_HEADPHONES:
return MediaRoute2Info.TYPE_WIRED_HEADPHONES;
case AudioDeviceInfo.TYPE_DOCK:
case AudioDeviceInfo.TYPE_DOCK_ANALOG:
return MediaRoute2Info.TYPE_DOCK;
case AudioDeviceInfo.TYPE_HDMI:
return MediaRoute2Info.TYPE_HDMI;
case AudioDeviceInfo.TYPE_USB_DEVICE:
return MediaRoute2Info.TYPE_USB_DEVICE;
case AudioDeviceInfo.TYPE_BLUETOOTH_A2DP:
return MediaRoute2Info.TYPE_BLUETOOTH_A2DP;
case AudioDeviceInfo.TYPE_BLE_HEADSET:
return MediaRoute2Info.TYPE_BLE_HEADSET;
case AudioDeviceInfo.TYPE_HEARING_AID:
return MediaRoute2Info.TYPE_HEARING_AID;
default:
return MediaRoute2Info.TYPE_UNKNOWN;
}
}
/* package */ static boolean isDeviceOutputAttributes(
@Nullable AudioDeviceAttributes audioDeviceAttributes) {
if (audioDeviceAttributes == null) {
return false;
}
if (audioDeviceAttributes.getRole() != AudioDeviceAttributes.ROLE_OUTPUT) {
return false;
}
switch (audioDeviceAttributes.getType()) {
case AudioDeviceInfo.TYPE_BUILTIN_EARPIECE:
case AudioDeviceInfo.TYPE_BUILTIN_SPEAKER:
case AudioDeviceInfo.TYPE_WIRED_HEADSET:
case AudioDeviceInfo.TYPE_WIRED_HEADPHONES:
case AudioDeviceInfo.TYPE_DOCK:
case AudioDeviceInfo.TYPE_DOCK_ANALOG:
case AudioDeviceInfo.TYPE_HDMI:
case AudioDeviceInfo.TYPE_USB_DEVICE:
return true;
default:
return false;
}
}
/* package */ static boolean isBluetoothOutputAttributes(
@Nullable AudioDeviceAttributes audioDeviceAttributes) {
if (audioDeviceAttributes == null) {
return false;
}
if (audioDeviceAttributes.getRole() != AudioDeviceAttributes.ROLE_OUTPUT) {
return false;
}
switch (audioDeviceAttributes.getType()) {
case AudioDeviceInfo.TYPE_BLUETOOTH_A2DP:
case AudioDeviceInfo.TYPE_BLE_HEADSET:
case AudioDeviceInfo.TYPE_BLE_SPEAKER:
case AudioDeviceInfo.TYPE_HEARING_AID:
return true;
default:
return false;
}
}
}

51
services/core/java/com/android/server/media/SystemMediaRoute2Provider.java
View File

@@ -16,11 +16,14 @@
package com.android.server.media;
import android.annotation.NonNull;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioAttributes;
import android.media.AudioDeviceAttributes;
import android.media.AudioManager;
import android.media.MediaRoute2Info;
import android.media.MediaRoute2ProviderInfo;
@@ -37,6 +40,7 @@ import android.util.Slog;
import com.android.internal.annotations.GuardedBy;
import java.util.List;
import java.util.Objects;
/**
@@ -71,6 +75,26 @@ class SystemMediaRoute2Provider extends MediaRoute2Provider {
private final AudioManagerBroadcastReceiver mAudioReceiver =
new AudioManagerBroadcastReceiver();
private final AudioManager.OnDevicesForAttributesChangedListener
mOnDevicesForAttributesChangedListener =
new AudioManager.OnDevicesForAttributesChangedListener() {
@Override
public void onDevicesForAttributesChanged(@NonNull AudioAttributes attributes,
@NonNull List<AudioDeviceAttributes> devices) {
if (attributes.getUsage() != AudioAttributes.USAGE_MEDIA) {
return;
}
mHandler.post(() -> {
updateSelectedAudioDevice(devices);
notifyProviderState();
if (updateSessionInfosIfNeeded()) {
notifySessionInfoUpdated();
}
});
}
};
private final Object mRequestLock = new Object();
@GuardedBy("mRequestLock")
private volatile SessionCreationRequest mPendingSessionCreationRequest;
@@ -100,8 +124,15 @@ class SystemMediaRoute2Provider extends MediaRoute2Provider {
});
});
mAudioManager.addOnDevicesForAttributesChangedListener(
AudioAttributesUtils.ATTRIBUTES_MEDIA, mContext.getMainExecutor(),
mOnDevicesForAttributesChangedListener);
// These methods below should be called after all fields are initialized, as they
// access the fields inside.
List<AudioDeviceAttributes> devices =
mAudioManager.getDevicesForAttributes(AudioAttributesUtils.ATTRIBUTES_MEDIA);
updateSelectedAudioDevice(devices);
updateProviderState();
updateSessionInfosIfNeeded();
}
@@ -239,6 +270,26 @@ class SystemMediaRoute2Provider extends MediaRoute2Provider {
}
}
private void updateSelectedAudioDevice(@NonNull List<AudioDeviceAttributes> devices) {
if (devices.isEmpty()) {
Slog.w(TAG, "The list of preferred devices was empty.");
return;
}
AudioDeviceAttributes audioDeviceAttributes = devices.get(0);
if (AudioAttributesUtils.isDeviceOutputAttributes(audioDeviceAttributes)) {
mDeviceRouteController.selectRoute(
AudioAttributesUtils.mapToMediaRouteType(audioDeviceAttributes));
mBluetoothRouteController.selectRoute(null);
} else if (AudioAttributesUtils.isBluetoothOutputAttributes(audioDeviceAttributes)) {
mDeviceRouteController.selectRoute(null);
mBluetoothRouteController.selectRoute(audioDeviceAttributes.getAddress());
} else {
Slog.w(TAG, "Unknown audio attributes: " + audioDeviceAttributes);
}
}
private void updateProviderState() {
MediaRoute2ProviderInfo.Builder builder = new MediaRoute2ProviderInfo.Builder();