| /* |
| ** |
| ** Copyright 2013, 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.commands.media; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.content.pm.ParceledListSlice; |
| import android.media.MediaMetadata; |
| import android.media.session.ISessionController; |
| import android.media.session.ISessionControllerCallback; |
| import android.media.session.ISessionManager; |
| import android.media.session.MediaController; |
| import android.media.session.ParcelableVolumeInfo; |
| import android.media.session.PlaybackState; |
| import android.os.Bundle; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.util.AndroidException; |
| import android.view.InputDevice; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| |
| import com.android.internal.os.BaseCommand; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.PrintStream; |
| import java.util.List; |
| |
| public class Media extends BaseCommand { |
| private ISessionManager mSessionService; |
| |
| /** |
| * Command-line entry point. |
| * |
| * @param args The command-line arguments |
| */ |
| public static void main(String[] args) { |
| (new Media()).run(args); |
| } |
| |
| public void onShowUsage(PrintStream out) { |
| out.println( |
| "usage: media [subcommand] [options]\n" + |
| " media dispatch KEY\n" + |
| " media list-sessions\n" + |
| " media monitor <tag>\n" + |
| "\n" + |
| "media dispatch: dispatch a media key to the system.\n" + |
| " KEY may be: play, pause, play-pause, mute, headsethook,\n" + |
| " stop, next, previous, rewind, record, fast-forword.\n" + |
| "media list-sessions: print a list of the current sessions.\n" + |
| "media monitor: monitor updates to the specified session.\n" + |
| " Use the tag from list-sessions.\n" |
| ); |
| } |
| |
| public void onRun() throws Exception { |
| mSessionService = ISessionManager.Stub.asInterface(ServiceManager.checkService( |
| Context.MEDIA_SESSION_SERVICE)); |
| if (mSessionService == null) { |
| System.err.println(NO_SYSTEM_ERROR_CODE); |
| throw new AndroidException( |
| "Can't connect to media session service; is the system running?"); |
| } |
| |
| String op = nextArgRequired(); |
| |
| if (op.equals("dispatch")) { |
| runDispatch(); |
| } else if (op.equals("list-sessions")) { |
| runListSessions(); |
| } else if (op.equals("monitor")) { |
| runMonitor(); |
| } else { |
| showError("Error: unknown command '" + op + "'"); |
| return; |
| } |
| } |
| |
| private void sendMediaKey(KeyEvent event) { |
| try { |
| mSessionService.dispatchMediaKeyEvent(event, false); |
| } catch (RemoteException e) { |
| } |
| } |
| |
| private void runMonitor() throws Exception { |
| String id = nextArgRequired(); |
| if (id == null) { |
| showError("Error: must include a session id"); |
| return; |
| } |
| boolean success = false; |
| try { |
| List<IBinder> sessions = mSessionService |
| .getSessions(null, ActivityManager.getCurrentUser()); |
| for (IBinder session : sessions) { |
| ISessionController controller = ISessionController.Stub.asInterface(session); |
| try { |
| if (controller != null && id.equals(controller.getTag())) { |
| ControllerMonitor monitor = new ControllerMonitor(controller); |
| monitor.run(); |
| success = true; |
| break; |
| } |
| } catch (RemoteException e) { |
| // ignore |
| } |
| } |
| } catch (Exception e) { |
| System.out.println("***Error monitoring session*** " + e.getMessage()); |
| } |
| if (!success) { |
| System.out.println("No session found with id " + id); |
| } |
| } |
| |
| private void runDispatch() throws Exception { |
| String cmd = nextArgRequired(); |
| int keycode; |
| if ("play".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_PLAY; |
| } else if ("pause".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_PAUSE; |
| } else if ("play-pause".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE; |
| } else if ("mute".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MUTE; |
| } else if ("headsethook".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_HEADSETHOOK; |
| } else if ("stop".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_STOP; |
| } else if ("next".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_NEXT; |
| } else if ("previous".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_PREVIOUS; |
| } else if ("rewind".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_REWIND; |
| } else if ("record".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_RECORD; |
| } else if ("fast-forward".equals(cmd)) { |
| keycode = KeyEvent.KEYCODE_MEDIA_FAST_FORWARD; |
| } else { |
| showError("Error: unknown dispatch code '" + cmd + "'"); |
| return; |
| } |
| |
| final long now = SystemClock.uptimeMillis(); |
| sendMediaKey(new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0, 0, |
| KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD)); |
| sendMediaKey(new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0, 0, |
| KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD)); |
| } |
| |
| class ControllerMonitor extends ISessionControllerCallback.Stub { |
| private final ISessionController mController; |
| |
| public ControllerMonitor(ISessionController controller) { |
| mController = controller; |
| } |
| |
| @Override |
| public void onSessionDestroyed() { |
| System.out.println("onSessionDestroyed. Enter q to quit."); |
| |
| } |
| |
| @Override |
| public void onEvent(String event, Bundle extras) { |
| System.out.println("onSessionEvent event=" + event + ", extras=" + extras); |
| } |
| |
| @Override |
| public void onPlaybackStateChanged(PlaybackState state) { |
| System.out.println("onPlaybackStateChanged " + state); |
| } |
| |
| @Override |
| public void onMetadataChanged(MediaMetadata metadata) { |
| String mmString = metadata == null ? null : "title=" + metadata |
| .getDescription(); |
| System.out.println("onMetadataChanged " + mmString); |
| } |
| |
| @Override |
| public void onQueueChanged(ParceledListSlice queue) throws RemoteException { |
| System.out.println("onQueueChanged, " |
| + (queue == null ? "null queue" : " size=" + queue.getList().size())); |
| } |
| |
| @Override |
| public void onQueueTitleChanged(CharSequence title) throws RemoteException { |
| System.out.println("onQueueTitleChange " + title); |
| } |
| |
| @Override |
| public void onExtrasChanged(Bundle extras) throws RemoteException { |
| System.out.println("onExtrasChanged " + extras); |
| } |
| |
| @Override |
| public void onVolumeInfoChanged(ParcelableVolumeInfo info) throws RemoteException { |
| System.out.println("onVolumeInfoChanged " + info); |
| } |
| |
| void printUsageMessage() { |
| try { |
| System.out.println("V2Monitoring session " + mController.getTag() |
| + "... available commands: play, pause, next, previous"); |
| } catch (RemoteException e) { |
| System.out.println("Error trying to monitor session!"); |
| } |
| System.out.println("(q)uit: finish monitoring"); |
| } |
| |
| void run() throws RemoteException { |
| printUsageMessage(); |
| HandlerThread cbThread = new HandlerThread("MediaCb") { |
| @Override |
| protected void onLooperPrepared() { |
| try { |
| mController.registerCallbackListener(ControllerMonitor.this); |
| } catch (RemoteException e) { |
| System.out.println("Error registering monitor callback"); |
| } |
| } |
| }; |
| cbThread.start(); |
| |
| try { |
| InputStreamReader converter = new InputStreamReader(System.in); |
| BufferedReader in = new BufferedReader(converter); |
| String line; |
| |
| while ((line = in.readLine()) != null) { |
| boolean addNewline = true; |
| if (line.length() <= 0) { |
| addNewline = false; |
| } else if ("q".equals(line) || "quit".equals(line)) { |
| break; |
| } else if ("play".equals(line)) { |
| mController.play(); |
| } else if ("pause".equals(line)) { |
| mController.pause(); |
| } else if ("next".equals(line)) { |
| mController.next(); |
| } else if ("previous".equals(line)) { |
| mController.previous(); |
| } else { |
| System.out.println("Invalid command: " + line); |
| } |
| |
| synchronized (this) { |
| if (addNewline) { |
| System.out.println(""); |
| } |
| printUsageMessage(); |
| } |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } finally { |
| cbThread.getLooper().quit(); |
| try { |
| mController.unregisterCallbackListener(this); |
| } catch (Exception e) { |
| // ignoring |
| } |
| } |
| } |
| } |
| |
| private void runListSessions() { |
| System.out.println("Sessions:"); |
| try { |
| List<IBinder> sessions = mSessionService |
| .getSessions(null, ActivityManager.getCurrentUser()); |
| for (IBinder session : sessions) { |
| |
| ISessionController controller = ISessionController.Stub.asInterface(session); |
| if (controller != null) { |
| try { |
| System.out.println(" tag=" + controller.getTag() |
| + ", package=" + controller.getPackageName()); |
| } catch (RemoteException e) { |
| // ignore |
| } |
| } |
| } |
| } catch (Exception e) { |
| System.out.println("***Error listing sessions***"); |
| } |
| } |
| } |