| /* |
| * Copyright (C) 2016 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.systemui.tv.pip; |
| |
| import android.app.ActivityManager.RunningTaskInfo; |
| import android.app.ActivityManager.StackInfo; |
| import android.app.ActivityManagerNative; |
| import android.app.ActivityOptions; |
| import android.app.IActivityManager; |
| import android.app.ITaskStackListener; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Resources; |
| import android.graphics.Rect; |
| import android.media.session.MediaController; |
| import android.media.session.MediaSessionManager; |
| import android.os.Debug; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.os.SystemProperties; |
| import android.util.Log; |
| |
| import com.android.systemui.Prefs; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; |
| import static android.app.ActivityManager.StackId.PINNED_STACK_ID; |
| import static com.android.systemui.Prefs.Key.TV_PICTURE_IN_PICTURE_ONBOARDING_SHOWN; |
| |
| /** |
| * Manages the picture-in-picture (PIP) UI and states. |
| */ |
| public class PipManager { |
| private static final String TAG = "PipManager"; |
| private static final boolean DEBUG = false; |
| private static final boolean DEBUG_FORCE_ONBOARDING = |
| SystemProperties.getBoolean("debug.tv.pip_force_onboarding", false); |
| |
| private static PipManager sPipManager; |
| |
| private static final int MAX_RUNNING_TASKS_COUNT = 10; |
| |
| public static final int STATE_NO_PIP = 0; |
| public static final int STATE_PIP_OVERLAY = 1; |
| public static final int STATE_PIP_MENU = 2; |
| |
| private static final int TASK_ID_NO_PIP = -1; |
| private static final int INVALID_RESOURCE_TYPE = -1; |
| |
| public static final int SUSPEND_PIP_RESIZE_REASON_WAITING_FOR_MENU_ACTIVITY_FINISH = 0x1; |
| public static final int SUSPEND_PIP_RESIZE_REASON_WAITING_FOR_OVERLAY_ACTIVITY_FINISH = 0x2; |
| |
| private static final int CLOSE_PIP_WHEN_MEDIA_SESSION_GONE_TIMEOUT_MS = 3000; |
| |
| private int mSuspendPipResizingReason; |
| |
| private static final float SCALE_FACTOR = 1.1f; |
| |
| private Context mContext; |
| private IActivityManager mActivityManager; |
| private MediaSessionManager mMediaSessionManager; |
| private int mState = STATE_NO_PIP; |
| private final Handler mHandler = new Handler(); |
| private List<Listener> mListeners = new ArrayList<>(); |
| private Rect mCurrentPipBounds; |
| private Rect mPipBounds; |
| private Rect mMenuModePipBounds; |
| private Rect mRecentsPipBounds; |
| private Rect mRecentsFocusedPipBounds; |
| private boolean mInitialized; |
| private int mPipTaskId = TASK_ID_NO_PIP; |
| private ComponentName mPipComponentName; |
| private MediaController mPipMediaController; |
| private boolean mOnboardingShown; |
| |
| private boolean mIsRecentsShown; |
| private boolean mIsPipFocusedInRecent; |
| |
| private final Runnable mOnActivityPinnedRunnable = new Runnable() { |
| @Override |
| public void run() { |
| StackInfo stackInfo = null; |
| try { |
| stackInfo = mActivityManager.getStackInfo(PINNED_STACK_ID); |
| if (stackInfo == null) { |
| Log.w(TAG, "Cannot find pinned stack"); |
| return; |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "getStackInfo failed", e); |
| return; |
| } |
| if (DEBUG) Log.d(TAG, "PINNED_STACK:" + stackInfo); |
| mPipTaskId = stackInfo.taskIds[stackInfo.taskIds.length - 1]; |
| mPipComponentName = ComponentName.unflattenFromString( |
| stackInfo.taskNames[stackInfo.taskNames.length - 1]); |
| // Set state to overlay so we show it when the pinned stack animation ends. |
| mState = STATE_PIP_OVERLAY; |
| mCurrentPipBounds = mPipBounds; |
| launchPipOnboardingActivityIfNeeded(); |
| mMediaSessionManager.addOnActiveSessionsChangedListener( |
| mActiveMediaSessionListener, null); |
| updateMediaController(mMediaSessionManager.getActiveSessions(null)); |
| } |
| }; |
| private final Runnable mOnTaskStackChanged = new Runnable() { |
| @Override |
| public void run() { |
| if (mState != STATE_NO_PIP) { |
| StackInfo stackInfo = null; |
| try { |
| stackInfo = mActivityManager.getStackInfo(PINNED_STACK_ID); |
| if (stackInfo == null) { |
| Log.w(TAG, "There is no pinned stack"); |
| closePipInternal(false); |
| return; |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "getStackInfo failed", e); |
| return; |
| } |
| for (int i = stackInfo.taskIds.length - 1; i >= 0; --i) { |
| if (stackInfo.taskIds[i] == mPipTaskId) { |
| // PIP task is still alive. |
| return; |
| } |
| } |
| // PIP task doesn't exist anymore in PINNED_STACK. |
| closePipInternal(true); |
| } |
| } |
| }; |
| private final Runnable mOnPinnedActivityRestartAttempt = new Runnable() { |
| @Override |
| public void run() { |
| // If PIPed activity is launched again by Launcher or intent, make it fullscreen. |
| movePipToFullscreen(); |
| } |
| }; |
| private final Runnable mOnPinnedStackAnimationEnded = new Runnable() { |
| @Override |
| public void run() { |
| switch (mState) { |
| case STATE_PIP_OVERLAY: |
| showPipOverlay(); |
| break; |
| case STATE_PIP_MENU: |
| showPipMenu(); |
| break; |
| } |
| } |
| }; |
| |
| private final Runnable mResizePinnedStackRunnable = new Runnable() { |
| @Override |
| public void run() { |
| resizePinnedStack(mState); |
| } |
| }; |
| private final Runnable mClosePipRunnable = new Runnable() { |
| @Override |
| public void run() { |
| closePip(); |
| } |
| }; |
| |
| private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (Intent.ACTION_MEDIA_RESOURCE_GRANTED.equals(action)) { |
| String[] packageNames = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES); |
| int resourceType = intent.getIntExtra(Intent.EXTRA_MEDIA_RESOURCE_TYPE, |
| INVALID_RESOURCE_TYPE); |
| if (mState != STATE_NO_PIP && packageNames != null && packageNames.length > 0 |
| && resourceType == Intent.EXTRA_MEDIA_RESOURCE_TYPE_VIDEO_CODEC) { |
| handleMediaResourceGranted(packageNames); |
| } |
| } |
| |
| } |
| }; |
| private final MediaSessionManager.OnActiveSessionsChangedListener mActiveMediaSessionListener = |
| new MediaSessionManager.OnActiveSessionsChangedListener() { |
| @Override |
| public void onActiveSessionsChanged(List<MediaController> controllers) { |
| updateMediaController(controllers); |
| } |
| }; |
| |
| private PipManager() { } |
| |
| /** |
| * Initializes {@link PipManager}. |
| */ |
| public void initialize(Context context) { |
| if (mInitialized) { |
| return; |
| } |
| mInitialized = true; |
| mContext = context; |
| Resources res = context.getResources(); |
| mPipBounds = Rect.unflattenFromString(res.getString( |
| com.android.internal.R.string.config_defaultPictureInPictureBounds)); |
| mMenuModePipBounds = Rect.unflattenFromString(res.getString( |
| com.android.internal.R.string.config_centeredPictureInPictureBounds)); |
| mRecentsPipBounds = Rect.unflattenFromString(res.getString( |
| com.android.internal.R.string.config_pictureInPictureBoundsInRecents)); |
| float scaleBy = (SCALE_FACTOR - 1.0f) / 2; |
| mRecentsFocusedPipBounds = new Rect( |
| (int) (mRecentsPipBounds.left - scaleBy * mRecentsPipBounds.width()), |
| (int) (mRecentsPipBounds.top - scaleBy * mRecentsPipBounds.height()), |
| (int) (mRecentsPipBounds.right + scaleBy * mRecentsPipBounds.width()), |
| (int) (mRecentsPipBounds.bottom + scaleBy * mRecentsPipBounds.height())); |
| |
| mActivityManager = ActivityManagerNative.getDefault(); |
| TaskStackListener taskStackListener = new TaskStackListener(); |
| IActivityManager iam = ActivityManagerNative.getDefault(); |
| try { |
| iam.registerTaskStackListener(taskStackListener); |
| } catch (RemoteException e) { |
| Log.e(TAG, "registerTaskStackListener failed", e); |
| } |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_MEDIA_RESOURCE_GRANTED); |
| mContext.registerReceiver(mBroadcastReceiver, intentFilter); |
| mOnboardingShown = Prefs.getBoolean( |
| mContext, TV_PICTURE_IN_PICTURE_ONBOARDING_SHOWN, false); |
| |
| mMediaSessionManager = |
| (MediaSessionManager) mContext.getSystemService(Context.MEDIA_SESSION_SERVICE); |
| } |
| |
| /** |
| * Request PIP. |
| * It could either start PIP if there's none, and show PIP menu otherwise. |
| */ |
| public void requestTvPictureInPicture() { |
| if (DEBUG) Log.d(TAG, "requestTvPictureInPicture()"); |
| if (!isPipShown()) { |
| startPip(); |
| } else if (mState == STATE_PIP_OVERLAY) { |
| resizePinnedStack(STATE_PIP_MENU); |
| } |
| } |
| |
| private void startPip() { |
| try { |
| mActivityManager.moveTopActivityToPinnedStack(FULLSCREEN_WORKSPACE_STACK_ID, mPipBounds); |
| } catch (RemoteException|IllegalArgumentException e) { |
| Log.e(TAG, "moveTopActivityToPinnedStack failed", e); |
| } |
| } |
| |
| /** |
| * Closes PIP (PIPed activity and PIP system UI). |
| */ |
| public void closePip() { |
| closePipInternal(true); |
| } |
| |
| private void closePipInternal(boolean removePipStack) { |
| mState = STATE_NO_PIP; |
| mPipTaskId = TASK_ID_NO_PIP; |
| mPipMediaController = null; |
| mMediaSessionManager.removeOnActiveSessionsChangedListener(mActiveMediaSessionListener); |
| if (removePipStack) { |
| try { |
| mActivityManager.removeStack(PINNED_STACK_ID); |
| } catch (RemoteException e) { |
| Log.e(TAG, "removeStack failed", e); |
| } |
| } |
| for (int i = mListeners.size() - 1; i >= 0; --i) { |
| mListeners.get(i).onPipActivityClosed(); |
| } |
| mHandler.removeCallbacks(mClosePipRunnable); |
| } |
| |
| /** |
| * Moves the PIPed activity to the fullscreen and closes PIP system UI. |
| */ |
| public void movePipToFullscreen() { |
| mState = STATE_NO_PIP; |
| mPipTaskId = TASK_ID_NO_PIP; |
| for (int i = mListeners.size() - 1; i >= 0; --i) { |
| mListeners.get(i).onMoveToFullscreen(); |
| } |
| resizePinnedStack(mState); |
| } |
| |
| /** |
| * Shows PIP overlay UI by launching {@link PipOverlayActivity}. It also locates the pinned |
| * stack to the default PIP bound {@link com.android.internal.R.string |
| * .config_defaultPictureInPictureBounds}. |
| */ |
| private void showPipOverlay() { |
| if (DEBUG) Log.d(TAG, "showPipOverlay()"); |
| mState = STATE_PIP_OVERLAY; |
| PipOverlayActivity.showPipOverlay(mContext); |
| } |
| |
| /** |
| * Suspends resizing operation on the Pip until {@link #resumePipResizing} is called |
| * @param reason The reason for suspending resizing operations on the Pip. |
| */ |
| public void suspendPipResizing(int reason) { |
| if (DEBUG) Log.d(TAG, |
| "suspendPipResizing() reason=" + reason + " callers=" + Debug.getCallers(2)); |
| mSuspendPipResizingReason |= reason; |
| } |
| |
| /** |
| * Resumes resizing operation on the Pip that was previously suspended. |
| * @param reason The reason resizing operations on the Pip was suspended. |
| */ |
| public void resumePipResizing(int reason) { |
| if ((mSuspendPipResizingReason & reason) == 0) { |
| return; |
| } |
| if (DEBUG) Log.d(TAG, |
| "resumePipResizing() reason=" + reason + " callers=" + Debug.getCallers(2)); |
| mSuspendPipResizingReason &= ~reason; |
| mHandler.post(mResizePinnedStackRunnable); |
| } |
| |
| /** |
| * Resize the Pip to the appropriate size for the input state. |
| * @param state In Pip state also used to determine the new size for the Pip. |
| */ |
| public void resizePinnedStack(int state) { |
| if (DEBUG) Log.d(TAG, "resizePinnedStack() state=" + state); |
| mState = state; |
| for (int i = mListeners.size() - 1; i >= 0; --i) { |
| mListeners.get(i).onPipResizeAboutToStart(); |
| } |
| if (mSuspendPipResizingReason != 0) { |
| if (DEBUG) Log.d(TAG, |
| "resizePinnedStack() deferring mSuspendPipResizingReason=" + |
| mSuspendPipResizingReason); |
| return; |
| } |
| switch (mState) { |
| case STATE_NO_PIP: |
| mCurrentPipBounds = null; |
| break; |
| case STATE_PIP_MENU: |
| mCurrentPipBounds = mMenuModePipBounds; |
| break; |
| case STATE_PIP_OVERLAY: |
| if (mIsRecentsShown) { |
| if (mIsPipFocusedInRecent) { |
| mCurrentPipBounds = mRecentsFocusedPipBounds; |
| } else { |
| mCurrentPipBounds = mRecentsPipBounds; |
| } |
| } else { |
| mCurrentPipBounds = mPipBounds; |
| } |
| break; |
| default: |
| mCurrentPipBounds = mPipBounds; |
| break; |
| } |
| try { |
| mActivityManager.resizeStack(PINNED_STACK_ID, mCurrentPipBounds, true, true, true); |
| } catch (RemoteException e) { |
| Log.e(TAG, "showPipMenu failed", e); |
| } |
| } |
| |
| /** |
| * Returns the current PIP bound for activities to sync their UI with PIP. |
| */ |
| public Rect getPipBounds() { |
| return mCurrentPipBounds; |
| } |
| |
| /** |
| * Called when Recents is started. |
| * PIPed activity will be resized accordingly and overlay will show available buttons. |
| */ |
| public void onRecentsStarted() { |
| mIsRecentsShown = true; |
| mIsPipFocusedInRecent = false; |
| if (mState == STATE_NO_PIP) { |
| return; |
| } |
| resizePinnedStack(STATE_PIP_OVERLAY); |
| } |
| |
| /** |
| * Called when Recents is stopped. |
| * PIPed activity will be resized accordingly and overlay will hide available buttons. |
| */ |
| public void onRecentsStopped() { |
| mIsRecentsShown = false; |
| mIsPipFocusedInRecent = false; |
| if (mState == STATE_NO_PIP) { |
| return; |
| } |
| resizePinnedStack(STATE_PIP_OVERLAY); |
| } |
| |
| /** |
| * Returns {@code true} if recents is shown. |
| */ |
| boolean isRecentsShown() { |
| return mIsRecentsShown; |
| } |
| |
| /** |
| * Called when the PIP view in {@link com.android.systemui.recents.tv.RecentsTvActivity} |
| * is focused. |
| * This only resizes pinned stack so it looks like it's in Recents. |
| * This should be called only by {@link com.android.systemui.recents.tv.RecentsTvActivity}. |
| */ |
| public void onPipViewFocusChangedInRecents(boolean hasFocus) { |
| mIsPipFocusedInRecent = hasFocus; |
| if (mState != STATE_PIP_OVERLAY) { |
| Log.w(TAG, "There is no pinned stack to handle focus change."); |
| return; |
| } |
| resizePinnedStack(STATE_PIP_OVERLAY); |
| } |
| |
| /** |
| * Shows PIP menu UI by launching {@link PipMenuActivity}. It also locates the pinned |
| * stack to the centered PIP bound {@link com.android.internal.R.string |
| * .config_centeredPictureInPictureBounds}. |
| */ |
| private void showPipMenu() { |
| if (DEBUG) Log.d(TAG, "showPipMenu()"); |
| mState = STATE_PIP_MENU; |
| for (int i = mListeners.size() - 1; i >= 0; --i) { |
| mListeners.get(i).onShowPipMenu(); |
| } |
| Intent intent = new Intent(mContext, PipMenuActivity.class); |
| intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| mContext.startActivity(intent); |
| } |
| |
| public void addListener(Listener listener) { |
| mListeners.add(listener); |
| } |
| |
| public void removeListener(Listener listener) { |
| mListeners.remove(listener); |
| } |
| |
| private void launchPipOnboardingActivityIfNeeded() { |
| if (DEBUG_FORCE_ONBOARDING || !mOnboardingShown) { |
| mOnboardingShown = true; |
| Prefs.putBoolean(mContext, TV_PICTURE_IN_PICTURE_ONBOARDING_SHOWN, true); |
| |
| Intent intent = new Intent(mContext, PipOnboardingActivity.class); |
| intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| mContext.startActivity(intent); |
| } |
| } |
| |
| /** |
| * Returns {@code true} if PIP is shown. |
| */ |
| public boolean isPipShown() { |
| return hasPipTasks(); |
| } |
| |
| private boolean hasPipTasks() { |
| try { |
| StackInfo stackInfo = mActivityManager.getStackInfo(PINNED_STACK_ID); |
| return stackInfo != null; |
| } catch (RemoteException e) { |
| Log.e(TAG, "getStackInfo failed", e); |
| return false; |
| } |
| } |
| |
| private void handleMediaResourceGranted(String[] packageNames) { |
| StackInfo fullscreenStack = null; |
| try { |
| fullscreenStack = mActivityManager.getStackInfo(FULLSCREEN_WORKSPACE_STACK_ID); |
| } catch (RemoteException e) { |
| Log.e(TAG, "getStackInfo failed", e); |
| } |
| if (fullscreenStack == null) { |
| return; |
| } |
| int fullscreenTopTaskId = fullscreenStack.taskIds[fullscreenStack.taskIds.length - 1]; |
| List<RunningTaskInfo> tasks = null; |
| try { |
| tasks = mActivityManager.getTasks(MAX_RUNNING_TASKS_COUNT, 0); |
| } catch (RemoteException e) { |
| Log.e(TAG, "getTasks failed", e); |
| } |
| if (tasks == null) { |
| return; |
| } |
| boolean wasGrantedInFullscreen = false; |
| boolean wasGrantedInPip = false; |
| for (int i = tasks.size() - 1; i >= 0; --i) { |
| RunningTaskInfo task = tasks.get(i); |
| for (int j = packageNames.length - 1; j >= 0; --j) { |
| if (task.topActivity.getPackageName().equals(packageNames[j])) { |
| if (task.id == fullscreenTopTaskId) { |
| wasGrantedInFullscreen = true; |
| } else if (task.id == mPipTaskId) { |
| wasGrantedInPip= true; |
| } |
| } |
| } |
| } |
| if (wasGrantedInFullscreen && !wasGrantedInPip) { |
| closePip(); |
| } |
| } |
| |
| private void updateMediaController(List<MediaController> controllers) { |
| MediaController mediaController = null; |
| if (controllers != null && mState != STATE_NO_PIP && mPipComponentName != null) { |
| for (int i = controllers.size() - 1; i >= 0; i--) { |
| MediaController controller = controllers.get(i); |
| // We assumes that an app with PIPable activity |
| // keeps the single instance of media controller especially when PIP is on. |
| if (controller.getPackageName().equals(mPipComponentName.getPackageName())) { |
| mediaController = controller; |
| break; |
| } |
| } |
| } |
| if (mPipMediaController != mediaController) { |
| mPipMediaController = mediaController; |
| for (int i = mListeners.size() - 1; i >= 0; i--) { |
| mListeners.get(i).onMediaControllerChanged(); |
| } |
| if (mPipMediaController == null) { |
| mHandler.postDelayed(mClosePipRunnable, |
| CLOSE_PIP_WHEN_MEDIA_SESSION_GONE_TIMEOUT_MS); |
| } else { |
| mHandler.removeCallbacks(mClosePipRunnable); |
| } |
| } |
| } |
| |
| /** |
| * Gets the {@link android.media.session.MediaController} for the PIPed activity. |
| */ |
| MediaController getMediaController() { |
| return mPipMediaController; |
| } |
| |
| private class TaskStackListener extends ITaskStackListener.Stub { |
| @Override |
| public void onTaskStackChanged() throws RemoteException { |
| // Post the message back to the UI thread. |
| mHandler.post(mOnTaskStackChanged); |
| } |
| |
| @Override |
| public void onActivityPinned() throws RemoteException { |
| // Post the message back to the UI thread. |
| if (DEBUG) Log.d(TAG, "onActivityPinned()"); |
| mHandler.post(mOnActivityPinnedRunnable); |
| } |
| |
| @Override |
| public void onPinnedActivityRestartAttempt() { |
| // Post the message back to the UI thread. |
| if (DEBUG) Log.d(TAG, "onPinnedActivityRestartAttempt()"); |
| mHandler.post(mOnPinnedActivityRestartAttempt); |
| } |
| |
| @Override |
| public void onPinnedStackAnimationEnded() { |
| if (DEBUG) Log.d(TAG, "onPinnedStackAnimationEnded()"); |
| mHandler.post(mOnPinnedStackAnimationEnded); |
| } |
| } |
| |
| /** |
| * A listener interface to receive notification on changes in PIP. |
| */ |
| public interface Listener { |
| /** Invoked when a PIPed activity is closed. */ |
| void onPipActivityClosed(); |
| /** Invoked when the PIP menu gets shown. */ |
| void onShowPipMenu(); |
| /** Invoked when the PIPed activity is returned back to the fullscreen. */ |
| void onMoveToFullscreen(); |
| /** Invoked when we are above to start resizing the Pip. */ |
| void onPipResizeAboutToStart(); |
| /** Invoked when the MediaController on PIPed activity is changed. */ |
| void onMediaControllerChanged(); |
| } |
| |
| /** |
| * Gets an instance of {@link PipManager}. |
| */ |
| public static PipManager getInstance() { |
| if (sPipManager == null) { |
| sPipManager = new PipManager(); |
| } |
| return sPipManager; |
| } |
| } |