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/*
* Copyright (C) 2021 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.settingslib.bluetooth;
import static android.bluetooth.BluetoothProfile.CONNECTION_POLICY_ALLOWED;
import static android.bluetooth.BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothProfile;
import android.bluetooth.BluetoothVolumeControl;
import android.content.Context;
import android.os.Build;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
import androidx.annotation.RequiresApi;
/**
* VolumeControlProfile handles Bluetooth Volume Control Controller role
*/
public class VolumeControlProfile implements LocalBluetoothProfile {
private static final String TAG = "VolumeControlProfile";
private static boolean DEBUG = true;
static final String NAME = "VCP";
// Order of this profile in device profiles list
private static final int ORDINAL = 1;
private Context mContext;
private final CachedBluetoothDeviceManager mDeviceManager;
private final LocalBluetoothProfileManager mProfileManager;
private BluetoothVolumeControl mService;
private boolean mIsProfileReady;
// These callbacks run on the main thread.
private final class VolumeControlProfileServiceListener
implements BluetoothProfile.ServiceListener {
@RequiresApi(Build.VERSION_CODES.S)
public void onServiceConnected(int profile, BluetoothProfile proxy) {
if (DEBUG) {
Log.d(TAG, "Bluetooth service connected");
}
mService = (BluetoothVolumeControl) proxy;
// We just bound to the service, so refresh the UI for any connected
// VolumeControlProfile devices.
List<BluetoothDevice> deviceList = mService.getConnectedDevices();
while (!deviceList.isEmpty()) {
BluetoothDevice nextDevice = deviceList.remove(0);
CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
// we may add a new device here, but generally this should not happen
if (device == null) {
if (DEBUG) {
Log.d(TAG, "VolumeControlProfile found new device: " + nextDevice);
}
device = mDeviceManager.addDevice(nextDevice);
}
device.onProfileStateChanged(VolumeControlProfile.this,
BluetoothProfile.STATE_CONNECTED);
device.refresh();
}
mProfileManager.callServiceConnectedListeners();
mIsProfileReady = true;
}
public void onServiceDisconnected(int profile) {
if (DEBUG) {
Log.d(TAG, "Bluetooth service disconnected");
}
mProfileManager.callServiceDisconnectedListeners();
mIsProfileReady = false;
}
}
VolumeControlProfile(Context context, CachedBluetoothDeviceManager deviceManager,
LocalBluetoothProfileManager profileManager) {
mContext = context;
mDeviceManager = deviceManager;
mProfileManager = profileManager;
BluetoothAdapter.getDefaultAdapter().getProfileProxy(context,
new VolumeControlProfile.VolumeControlProfileServiceListener(),
BluetoothProfile.VOLUME_CONTROL);
}
@Override
public boolean accessProfileEnabled() {
return false;
}
@Override
public boolean isAutoConnectable() {
return true;
}
/**
* Get VolumeControlProfile devices matching connection states{
*
* @return Matching device list
* @code BluetoothProfile.STATE_CONNECTED,
* @code BluetoothProfile.STATE_CONNECTING,
* @code BluetoothProfile.STATE_DISCONNECTING}
*/
public List<BluetoothDevice> getConnectedDevices() {
if (mService == null) {
return new ArrayList<BluetoothDevice>(0);
}
return mService.getDevicesMatchingConnectionStates(
new int[]{BluetoothProfile.STATE_CONNECTED, BluetoothProfile.STATE_CONNECTING,
BluetoothProfile.STATE_DISCONNECTING});
}
@Override
public int getConnectionStatus(BluetoothDevice device) {
if (mService == null) {
return BluetoothProfile.STATE_DISCONNECTED;
}
return mService.getConnectionState(device);
}
@Override
public boolean isEnabled(BluetoothDevice device) {
if (mService == null || device == null) {
return false;
}
return mService.getConnectionPolicy(device) > CONNECTION_POLICY_FORBIDDEN;
}
@Override
public int getConnectionPolicy(BluetoothDevice device) {
if (mService == null || device == null) {
return CONNECTION_POLICY_FORBIDDEN;
}
return mService.getConnectionPolicy(device);
}
@Override
public boolean setEnabled(BluetoothDevice device, boolean enabled) {
boolean isSuccessful = false;
if (mService == null || device == null) {
return false;
}
if (DEBUG) {
Log.d(TAG, device.getAnonymizedAddress() + " setEnabled: " + enabled);
}
if (enabled) {
if (mService.getConnectionPolicy(device) < CONNECTION_POLICY_ALLOWED) {
isSuccessful = mService.setConnectionPolicy(device, CONNECTION_POLICY_ALLOWED);
}
} else {
isSuccessful = mService.setConnectionPolicy(device, CONNECTION_POLICY_FORBIDDEN);
}
return isSuccessful;
}
@Override
public boolean isProfileReady() {
return mIsProfileReady;
}
@Override
public int getProfileId() {
return BluetoothProfile.VOLUME_CONTROL;
}
public String toString() {
return NAME;
}
@Override
public int getOrdinal() {
return ORDINAL;
}
@Override
public int getNameResource(BluetoothDevice device) {
return 0; // VCP profile not displayed in UI
}
@Override
public int getSummaryResourceForDevice(BluetoothDevice device) {
return 0; // VCP profile not displayed in UI
}
@Override
public int getDrawableResource(BluetoothClass btClass) {
// no icon for VCP
return 0;
}
}
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