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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.settings.connecteddevice.audiosharing.audiostreams;
import static java.util.Collections.emptyList;
import android.app.AlertDialog;
import android.app.settings.SettingsEnums;
import android.bluetooth.BluetoothLeBroadcastMetadata;
import android.bluetooth.BluetoothLeBroadcastReceiveState;
import android.content.Context;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.lifecycle.DefaultLifecycleObserver;
import androidx.lifecycle.LifecycleOwner;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.bluetooth.Utils;
import com.android.settings.connecteddevice.audiosharing.AudioSharingUtils;
import com.android.settings.core.BasePreferenceController;
import com.android.settings.core.SubSettingLauncher;
import com.android.settingslib.bluetooth.BluetoothUtils;
import com.android.settingslib.bluetooth.LocalBluetoothLeBroadcastAssistant;
import com.android.settingslib.utils.ThreadUtils;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import javax.annotation.Nullable;
public class AudioStreamsProgressCategoryController extends BasePreferenceController
implements DefaultLifecycleObserver {
private static final String TAG = "AudioStreamsProgressCategoryController";
private static final boolean DEBUG = BluetoothUtils.D;
private final Executor mExecutor;
private final AudioStreamsBroadcastAssistantCallback mBroadcastAssistantCallback;
private final AudioStreamsHelper mAudioStreamsHelper;
private final @Nullable LocalBluetoothLeBroadcastAssistant mLeBroadcastAssistant;
private final ConcurrentHashMap<Integer, AudioStreamPreference> mBroadcastIdToPreferenceMap =
new ConcurrentHashMap<>();
private AudioStreamsProgressCategoryPreference mCategoryPreference;
public AudioStreamsProgressCategoryController(Context context, String preferenceKey) {
super(context, preferenceKey);
mExecutor = Executors.newSingleThreadExecutor();
mAudioStreamsHelper = new AudioStreamsHelper(Utils.getLocalBtManager(mContext));
mLeBroadcastAssistant = mAudioStreamsHelper.getLeBroadcastAssistant();
mBroadcastAssistantCallback = new AudioStreamsBroadcastAssistantCallback(this);
}
@Override
public int getAvailabilityStatus() {
return AVAILABLE;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mCategoryPreference = screen.findPreference(getPreferenceKey());
}
@Override
public void onStart(@NonNull LifecycleOwner owner) {
if (mLeBroadcastAssistant == null) {
Log.w(TAG, "onStart(): LeBroadcastAssistant is null!");
return;
}
mBroadcastIdToPreferenceMap.clear();
if (mCategoryPreference != null) {
mCategoryPreference.removeAll();
}
mExecutor.execute(
() -> {
mLeBroadcastAssistant.registerServiceCallBack(
mExecutor, mBroadcastAssistantCallback);
if (DEBUG) {
Log.d(TAG, "scanAudioStreamsStart()");
}
mLeBroadcastAssistant.startSearchingForSources(emptyList());
// Display currently connected streams
var unused =
ThreadUtils.postOnBackgroundThread(
() ->
mAudioStreamsHelper
.getAllSources()
.forEach(this::handleSourceConnected));
});
}
@Override
public void onStop(@NonNull LifecycleOwner owner) {
if (mLeBroadcastAssistant == null) {
Log.w(TAG, "onStop(): LeBroadcastAssistant is null!");
return;
}
mExecutor.execute(
() -> {
if (mLeBroadcastAssistant.isSearchInProgress()) {
if (DEBUG) {
Log.d(TAG, "scanAudioStreamsStop()");
}
mLeBroadcastAssistant.stopSearchingForSources();
}
mLeBroadcastAssistant.unregisterServiceCallBack(mBroadcastAssistantCallback);
});
}
void setScanning(boolean isScanning) {
ThreadUtils.postOnMainThread(
() -> {
if (mCategoryPreference != null) mCategoryPreference.setProgress(isScanning);
});
}
void handleSourceFound(BluetoothLeBroadcastMetadata source) {
Preference.OnPreferenceClickListener addSourceOrShowDialog =
preference -> {
if (DEBUG) {
Log.d(TAG, "preferenceClicked(): attempt to join broadcast");
}
if (source.isEncrypted()) {
ThreadUtils.postOnMainThread(
() -> launchPasswordDialog(source, preference));
} else {
mAudioStreamsHelper.addSource(source);
}
return true;
};
mBroadcastIdToPreferenceMap.computeIfAbsent(
source.getBroadcastId(),
k -> {
var preference = AudioStreamPreference.fromMetadata(mContext, source);
ThreadUtils.postOnMainThread(
() -> {
preference.setIsConnected(false, addSourceOrShowDialog);
if (mCategoryPreference != null) {
mCategoryPreference.addPreference(preference);
}
});
return preference;
});
}
void handleSourceLost(int broadcastId) {
var toRemove = mBroadcastIdToPreferenceMap.remove(broadcastId);
if (toRemove != null) {
ThreadUtils.postOnMainThread(
() -> {
if (mCategoryPreference != null) {
mCategoryPreference.removePreference(toRemove);
}
});
}
mAudioStreamsHelper.removeSource();
}
void handleSourceConnected(BluetoothLeBroadcastReceiveState state) {
// TODO(chelseahao): only continue when the state indicates a successful connection
mBroadcastIdToPreferenceMap.compute(
state.getBroadcastId(),
(k, v) -> {
// True if this source has been added either by scanning, or it's currently
// connected to another active sink.
boolean existed = v != null;
AudioStreamPreference preference =
existed ? v : AudioStreamPreference.fromReceiveState(mContext, state);
ThreadUtils.postOnMainThread(
() -> {
preference.setIsConnected(
true, p -> launchDetailFragment((AudioStreamPreference) p));
if (mCategoryPreference != null && !existed) {
mCategoryPreference.addPreference(preference);
}
});
return preference;
});
}
void showToast(String msg) {
AudioSharingUtils.toastMessage(mContext, msg);
}
private boolean launchDetailFragment(AudioStreamPreference preference) {
Bundle broadcast = new Bundle();
broadcast.putString(
Settings.Secure.BLUETOOTH_LE_BROADCAST_PROGRAM_INFO,
(String) preference.getTitle());
new SubSettingLauncher(mContext)
.setTitleText("Audio stream details")
.setDestination(AudioStreamDetailsFragment.class.getName())
// TODO(chelseahao): Add logging enum
.setSourceMetricsCategory(SettingsEnums.PAGE_UNKNOWN)
.setArguments(broadcast)
.launch();
return true;
}
private void launchPasswordDialog(BluetoothLeBroadcastMetadata source, Preference preference) {
View layout =
LayoutInflater.from(mContext)
.inflate(R.layout.bluetooth_find_broadcast_password_dialog, null);
((TextView) layout.requireViewById(R.id.broadcast_name_text))
.setText(preference.getTitle());
AlertDialog alertDialog =
new AlertDialog.Builder(mContext)
.setTitle(R.string.find_broadcast_password_dialog_title)
.setView(layout)
.setNeutralButton(android.R.string.cancel, null)
.setPositiveButton(
R.string.bluetooth_connect_access_dialog_positive,
(dialog, which) -> {
var code =
((EditText)
layout.requireViewById(
R.id.broadcast_edit_text))
.getText()
.toString();
mAudioStreamsHelper.addSource(
new BluetoothLeBroadcastMetadata.Builder(source)
.setBroadcastCode(
code.getBytes(StandardCharsets.UTF_8))
.build());
})
.create();
alertDialog.show();
}
}
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