/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.media;
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import android.annotation.Nullable;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.database.Cursor;
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import android.media.AudioAttributes;
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import android.media.IAudioService;
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import android.media.IRingtonePlayer;
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import android.media.Ringtone;
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import android.media.VolumeShaper;
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import android.net.Uri;
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import android.os.Binder;
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import android.os.IBinder;
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import android.os.ParcelFileDescriptor;
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import android.os.Process;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.UserHandle;
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import android.provider.MediaStore;
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import android.util.Log;
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import com.android.systemui.SystemUI;
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import java.io.FileDescriptor;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.HashMap;
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/**
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* Service that offers to play ringtones by {@link Uri}, since our process has
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* {@link android.Manifest.permission#READ_EXTERNAL_STORAGE}.
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*/
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public class RingtonePlayer extends SystemUI {
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private static final String TAG = "RingtonePlayer";
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private static final boolean LOGD = false;
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// TODO: support Uri switching under same IBinder
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private IAudioService mAudioService;
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private final NotificationPlayer mAsyncPlayer = new NotificationPlayer(TAG);
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private final HashMap<IBinder, Client> mClients = new HashMap<IBinder, Client>();
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@Override
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public void start() {
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mAsyncPlayer.setUsesWakeLock(mContext);
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mAudioService = IAudioService.Stub.asInterface(
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ServiceManager.getService(Context.AUDIO_SERVICE));
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try {
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mAudioService.setRingtonePlayer(mCallback);
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} catch (RemoteException e) {
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Log.e(TAG, "Problem registering RingtonePlayer: " + e);
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}
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}
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/**
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* Represents an active remote {@link Ringtone} client.
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*/
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private class Client implements IBinder.DeathRecipient {
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private final IBinder mToken;
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private final Ringtone mRingtone;
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public Client(IBinder token, Uri uri, UserHandle user, AudioAttributes aa) {
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this(token, uri, user, aa, null);
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}
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Client(IBinder token, Uri uri, UserHandle user, AudioAttributes aa,
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@Nullable VolumeShaper.Configuration volumeShaperConfig) {
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mToken = token;
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mRingtone = new Ringtone(getContextForUser(user), false);
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mRingtone.setAudioAttributes(aa);
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mRingtone.setUri(uri, volumeShaperConfig);
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}
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@Override
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public void binderDied() {
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if (LOGD) Log.d(TAG, "binderDied() token=" + mToken);
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synchronized (mClients) {
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mClients.remove(mToken);
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}
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mRingtone.stop();
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}
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}
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private IRingtonePlayer mCallback = new IRingtonePlayer.Stub() {
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@Override
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public void play(IBinder token, Uri uri, AudioAttributes aa, float volume, boolean looping)
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throws RemoteException {
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playWithVolumeShaping(token, uri, aa, volume, looping, null);
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}
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@Override
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public void playWithVolumeShaping(IBinder token, Uri uri, AudioAttributes aa, float volume,
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boolean looping, @Nullable VolumeShaper.Configuration volumeShaperConfig)
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throws RemoteException {
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if (LOGD) {
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Log.d(TAG, "play(token=" + token + ", uri=" + uri + ", uid="
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+ Binder.getCallingUid() + ")");
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}
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Client client;
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synchronized (mClients) {
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client = mClients.get(token);
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if (client == null) {
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final UserHandle user = Binder.getCallingUserHandle();
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client = new Client(token, uri, user, aa, volumeShaperConfig);
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token.linkToDeath(client, 0);
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mClients.put(token, client);
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}
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}
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client.mRingtone.setLooping(looping);
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client.mRingtone.setVolume(volume);
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client.mRingtone.play();
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}
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@Override
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public void stop(IBinder token) {
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if (LOGD) Log.d(TAG, "stop(token=" + token + ")");
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Client client;
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synchronized (mClients) {
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client = mClients.remove(token);
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}
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if (client != null) {
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client.mToken.unlinkToDeath(client, 0);
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client.mRingtone.stop();
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}
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}
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@Override
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public boolean isPlaying(IBinder token) {
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if (LOGD) Log.d(TAG, "isPlaying(token=" + token + ")");
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Client client;
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synchronized (mClients) {
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client = mClients.get(token);
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}
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if (client != null) {
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return client.mRingtone.isPlaying();
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} else {
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return false;
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}
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}
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@Override
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public void setPlaybackProperties(IBinder token, float volume, boolean looping) {
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Client client;
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synchronized (mClients) {
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client = mClients.get(token);
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}
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if (client != null) {
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client.mRingtone.setVolume(volume);
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client.mRingtone.setLooping(looping);
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}
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// else no client for token when setting playback properties but will be set at play()
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}
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@Override
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public void playAsync(Uri uri, UserHandle user, boolean looping, AudioAttributes aa) {
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if (LOGD) Log.d(TAG, "playAsync(uri=" + uri + ", user=" + user + ")");
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if (Binder.getCallingUid() != Process.SYSTEM_UID) {
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throw new SecurityException("Async playback only available from system UID.");
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}
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if (UserHandle.ALL.equals(user)) {
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user = UserHandle.SYSTEM;
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}
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mAsyncPlayer.play(getContextForUser(user), uri, looping, aa);
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}
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@Override
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public void stopAsync() {
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if (LOGD) Log.d(TAG, "stopAsync()");
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if (Binder.getCallingUid() != Process.SYSTEM_UID) {
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throw new SecurityException("Async playback only available from system UID.");
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}
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mAsyncPlayer.stop();
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}
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@Override
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public String getTitle(Uri uri) {
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final UserHandle user = Binder.getCallingUserHandle();
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return Ringtone.getTitle(getContextForUser(user), uri,
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false /*followSettingsUri*/, false /*allowRemote*/);
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}
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@Override
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public ParcelFileDescriptor openRingtone(Uri uri) {
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final UserHandle user = Binder.getCallingUserHandle();
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final ContentResolver resolver = getContextForUser(user).getContentResolver();
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// Only open the requested Uri if it's a well-known ringtone or
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// other sound from the platform media store, otherwise this opens
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// up arbitrary access to any file on external storage.
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if (uri.toString().startsWith(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI.toString())) {
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try (Cursor c = resolver.query(uri, new String[] {
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MediaStore.Audio.AudioColumns.IS_RINGTONE,
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MediaStore.Audio.AudioColumns.IS_ALARM,
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MediaStore.Audio.AudioColumns.IS_NOTIFICATION
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}, null, null, null)) {
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if (c.moveToFirst()) {
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if (c.getInt(0) != 0 || c.getInt(1) != 0 || c.getInt(2) != 0) {
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try {
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return resolver.openFileDescriptor(uri, "r");
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} catch (IOException e) {
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throw new SecurityException(e);
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}
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}
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}
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}
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}
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throw new SecurityException("Uri is not ringtone, alarm, or notification: " + uri);
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}
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};
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private Context getContextForUser(UserHandle user) {
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try {
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return mContext.createPackageContextAsUser(mContext.getPackageName(), 0, user);
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} catch (NameNotFoundException e) {
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throw new RuntimeException(e);
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}
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}
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@Override
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public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
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pw.println("Clients:");
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synchronized (mClients) {
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for (Client client : mClients.values()) {
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pw.print(" mToken=");
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pw.print(client.mToken);
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pw.print(" mUri=");
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pw.println(client.mRingtone.getUri());
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}
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}
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}
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}
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