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/*
* 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.audio;
import static android.media.AudioSystem.DEVICE_NONE;
import static android.media.AudioSystem.isBluetoothDevice;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.media.AudioDeviceAttributes;
import android.media.AudioDeviceInfo;
import android.text.TextUtils;
import android.util.Log;
import android.util.Pair;
import java.util.Objects;
/**
* Class representing all devices that were previously or are currently connected. Data is
* persisted in {@link android.provider.Settings.Secure}
*/
/*package*/ final class AdiDeviceState {
private static final String TAG = "AS.AdiDeviceState";
private static final String SETTING_FIELD_SEPARATOR = ",";
@AudioDeviceInfo.AudioDeviceType
private final int mDeviceType;
private final int mInternalDeviceType;
@NonNull
private final String mDeviceAddress;
/** Unique device id from internal device type and address. */
private final Pair<Integer, String> mDeviceId;
private boolean mSAEnabled;
private boolean mHasHeadTracker = false;
private boolean mHeadTrackerEnabled;
/**
* Constructor
*
* @param deviceType external audio device type
* @param internalDeviceType if not set pass {@link DEVICE_NONE}, in this case the
* default conversion of the external type will be used
* @param address must be non-null for wireless devices
* @throws NullPointerException if a null address is passed for a wireless device
*/
AdiDeviceState(@AudioDeviceInfo.AudioDeviceType int deviceType,
int internalDeviceType,
@Nullable String address) {
mDeviceType = deviceType;
if (internalDeviceType != DEVICE_NONE) {
mInternalDeviceType = internalDeviceType;
} else {
mInternalDeviceType = AudioDeviceInfo.convertDeviceTypeToInternalDevice(deviceType);
}
mDeviceAddress = isBluetoothDevice(mInternalDeviceType) ? Objects.requireNonNull(
address) : "";
mDeviceId = new Pair<>(mInternalDeviceType, mDeviceAddress);
}
public Pair<Integer, String> getDeviceId() {
return mDeviceId;
}
@AudioDeviceInfo.AudioDeviceType
public int getDeviceType() {
return mDeviceType;
}
public int getInternalDeviceType() {
return mInternalDeviceType;
}
@NonNull
public String getDeviceAddress() {
return mDeviceAddress;
}
public void setSAEnabled(boolean sAEnabled) {
mSAEnabled = sAEnabled;
}
public boolean isSAEnabled() {
return mSAEnabled;
}
public void setHeadTrackerEnabled(boolean headTrackerEnabled) {
mHeadTrackerEnabled = headTrackerEnabled;
}
public boolean isHeadTrackerEnabled() {
return mHeadTrackerEnabled;
}
public void setHasHeadTracker(boolean hasHeadTracker) {
mHasHeadTracker = hasHeadTracker;
}
public boolean hasHeadTracker() {
return mHasHeadTracker;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
// type check and cast
if (getClass() != obj.getClass()) {
return false;
}
final AdiDeviceState sads = (AdiDeviceState) obj;
return mDeviceType == sads.mDeviceType
&& mInternalDeviceType == sads.mInternalDeviceType
&& mDeviceAddress.equals(sads.mDeviceAddress) // NonNull
&& mSAEnabled == sads.mSAEnabled
&& mHasHeadTracker == sads.mHasHeadTracker
&& mHeadTrackerEnabled == sads.mHeadTrackerEnabled;
}
@Override
public int hashCode() {
return Objects.hash(mDeviceType, mInternalDeviceType, mDeviceAddress, mSAEnabled,
mHasHeadTracker, mHeadTrackerEnabled);
}
@Override
public String toString() {
return "type: " + mDeviceType
+ " internal type: 0x" + Integer.toHexString(mInternalDeviceType)
+ " addr: " + mDeviceAddress + " enabled: " + mSAEnabled
+ " HT: " + mHasHeadTracker + " HTenabled: " + mHeadTrackerEnabled;
}
public String toPersistableString() {
return (new StringBuilder().append(mDeviceType)
.append(SETTING_FIELD_SEPARATOR).append(mDeviceAddress)
.append(SETTING_FIELD_SEPARATOR).append(mSAEnabled ? "1" : "0")
.append(SETTING_FIELD_SEPARATOR).append(mHasHeadTracker ? "1" : "0")
.append(SETTING_FIELD_SEPARATOR).append(mHeadTrackerEnabled ? "1" : "0")
.append(SETTING_FIELD_SEPARATOR).append(mInternalDeviceType)
.toString());
}
/**
* Gets the max size (including separators) when persisting the elements with
* {@link AdiDeviceState#toPersistableString()}.
*/
public static int getPeristedMaxSize() {
return 36; /* (mDeviceType)2 + (mDeviceAddresss)17 + (mInternalDeviceType)9 + (mSAEnabled)1
+ (mHasHeadTracker)1 + (mHasHeadTrackerEnabled)1
+ (SETTINGS_FIELD_SEPARATOR)5 */
}
@Nullable
public static AdiDeviceState fromPersistedString(@Nullable String persistedString) {
if (persistedString == null) {
return null;
}
if (persistedString.isEmpty()) {
return null;
}
String[] fields = TextUtils.split(persistedString, SETTING_FIELD_SEPARATOR);
// we may have 5 fields for the legacy AdiDeviceState and 6 containing the internal
// device type
if (fields.length != 5 && fields.length != 6) {
// expecting all fields, fewer may mean corruption, ignore those settings
return null;
}
try {
final int deviceType = Integer.parseInt(fields[0]);
int internalDeviceType = -1;
if (fields.length == 6) {
internalDeviceType = Integer.parseInt(fields[5]);
}
final AdiDeviceState deviceState = new AdiDeviceState(deviceType,
internalDeviceType, fields[1]);
deviceState.setHasHeadTracker(Integer.parseInt(fields[2]) == 1);
deviceState.setHasHeadTracker(Integer.parseInt(fields[3]) == 1);
deviceState.setHeadTrackerEnabled(Integer.parseInt(fields[4]) == 1);
return deviceState;
} catch (NumberFormatException e) {
Log.e(TAG, "unable to parse setting for AdiDeviceState: " + persistedString, e);
return null;
}
}
public AudioDeviceAttributes getAudioDeviceAttributes() {
return new AudioDeviceAttributes(AudioDeviceAttributes.ROLE_OUTPUT,
mDeviceType, mDeviceAddress);
}
}
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