am ad69e53e: am edf47486: Removed the secure camera launcher (89d80472) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -390,7 +390,8 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
		serviceIntent.setAction(CameraPrewarmService.ACTION_PREWARM);
		try {
		if (getContext().bindServiceAsUser(serviceIntent, mPrewarmConnection,
		Context.BIND_AUTO_CREATE, new UserHandle(UserHandle.USER_CURRENT))) {
		Context.BIND_AUTO_CREATE \| Context.BIND_FOREGROUND_SERVICE,
		new UserHandle(UserHandle.USER_CURRENT))) {
		mPrewarmBound = true;
		}
		} catch (SecurityException e) {

packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java

+1 −20

Original line number	Diff line number	Diff line
		@@ -110,12 +110,6 @@ public class NotificationPanelView extends PanelView implements
		private VelocityTracker mVelocityTracker;
		private boolean mQsTracking;

		/**
		* Handles launching the secure camera properly even when other applications may be using the
		* camera hardware.
		*/
		private SecureCameraLaunchManager mSecureCameraLaunchManager;

		/**
		* If set, the ongoing touch gesture might both trigger the expansion in {@link PanelView} and
		* the expansion for quick settings.
		@@ -262,8 +256,6 @@ public class NotificationPanelView extends PanelView implements
		mKeyguardBottomArea = (KeyguardBottomAreaView) findViewById(R.id.keyguard_bottom_area);
		mQsNavbarScrim = findViewById(R.id.qs_navbar_scrim);
		mAfforanceHelper = new KeyguardAffordanceHelper(this, getContext());
		mSecureCameraLaunchManager =
		new SecureCameraLaunchManager(getContext(), mKeyguardBottomArea);
		mLastOrientation = getResources().getConfiguration().orientation;

		// recompute internal state when qspanel height changes
		@@ -368,16 +360,6 @@ public class NotificationPanelView extends PanelView implements
		updateMaxHeadsUpTranslation();
		}

		@Override
		public void onAttachedToWindow() {
		mSecureCameraLaunchManager.create();
		}

		@Override
		public void onDetachedFromWindow() {
		mSecureCameraLaunchManager.destroy();
		}

		private void startQsSizeChangeAnimation(int oldHeight, final int newHeight) {
		if (mQsSizeChangeAnimator != null) {
		oldHeight = (int) mQsSizeChangeAnimator.getAnimatedValue();
		@@ -1963,7 +1945,7 @@ public class NotificationPanelView extends PanelView implements
		} else {
		EventLogTags.writeSysuiLockscreenGesture(
		EventLogConstants.SYSUI_LOCKSCREEN_GESTURE_SWIPE_CAMERA, lengthDp, velocityDp);
		mSecureCameraLaunchManager.startSecureCameraLaunch();
		mKeyguardBottomArea.launchCamera();
		}
		mStatusBar.startLaunchTransitionTimeout();
		mBlockTouches = true;
		@@ -2010,7 +1992,6 @@ public class NotificationPanelView extends PanelView implements
		boolean camera = getLayoutDirection() == LAYOUT_DIRECTION_RTL ? !rightIcon
		: rightIcon;
		if (camera) {
		mSecureCameraLaunchManager.onSwipingStarted();
		mKeyguardBottomArea.bindCameraPrewarmService();
		}
		requestDisallowInterceptTouchEvent(true);

packages/SystemUI/src/com/android/systemui/statusbar/phone/SecureCameraLaunchManager.java

deleted100644 → 0

+0 −284

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2014 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.statusbar.phone;

		import android.content.Context;
		import android.content.Intent;
		import android.content.pm.PackageManager;
		import android.content.pm.ResolveInfo;
		import android.hardware.camera2.CameraManager;
		import android.os.AsyncTask;
		import android.os.Handler;
		import android.provider.MediaStore;
		import android.util.Log;

		import com.android.internal.widget.LockPatternUtils;
		import com.android.keyguard.KeyguardUpdateMonitor;

		import java.util.HashMap;
		import java.util.List;
		import java.util.Map;

		/**
		* Handles launching the secure camera properly even when other applications may be using the camera
		* hardware.
		*
		* When other applications (e.g., Face Unlock) are using the camera, they must close the camera to
		* allow the secure camera to open it. Since we want to minimize the delay when opening the secure
		* camera, other apps should close the camera at the first possible opportunity (i.e., as soon as
		* the user begins swiping to go to the secure camera).
		*
		* If the camera is unavailable when the user begins to swipe, the SecureCameraLaunchManager sends a
		* broadcast to tell other apps to close the camera. When and if the user completes their swipe to
		* launch the secure camera, the SecureCameraLaunchManager delays launching the secure camera until
		* a callback indicates that the camera has become available. If it doesn't receive that callback
		* within a specified timeout period, the secure camera is launched anyway.
		*
		* Ideally, the secure camera would handle waiting for the camera to become available. This allows
		* some of the time necessary to close the camera to happen in parallel with starting the secure
		* camera app. We can't rely on all third-party camera apps to handle this. However, an app can
		* put com.android.systemui.statusbar.phone.will_wait_for_camera_available in its meta-data to
		* indicate that it will be responsible for waiting for the camera to become available.
		*
		* It is assumed that the functions in this class, including the constructor, will be called from
		* the UI thread.
		*/
		public class SecureCameraLaunchManager {
		private static final boolean DEBUG = false;
		private static final String TAG = "SecureCameraLaunchManager";

		// Action sent as a broadcast to tell other apps to stop using the camera. Other apps that use
		// the camera from keyguard (e.g., Face Unlock) should listen for this broadcast and close the
		// camera as soon as possible after receiving it.
		private static final String CLOSE_CAMERA_ACTION_NAME =
		"com.android.systemui.statusbar.phone.CLOSE_CAMERA";

		// Apps should put this field in their meta-data to indicate that they will take on the
		// responsibility of waiting for the camera to become available. If this field is present, the
		// SecureCameraLaunchManager launches the secure camera even if the camera hardware has not
		// become available. Having the secure camera app do the waiting is the optimal approach, but
		// without this field, the SecureCameraLaunchManager doesn't launch the secure camera until the
		// camera hardware is available.
		private static final String META_DATA_WILL_WAIT_FOR_CAMERA_AVAILABLE =
		"com.android.systemui.statusbar.phone.will_wait_for_camera_available";

		// If the camera hardware hasn't become available after this period of time, the
		// SecureCameraLaunchManager launches the secure camera anyway.
		private static final int CAMERA_AVAILABILITY_TIMEOUT_MS = 1000;

		private Context mContext;
		private Handler mHandler;
		private LockPatternUtils mLockPatternUtils;
		private KeyguardBottomAreaView mKeyguardBottomArea;

		private CameraManager mCameraManager;
		private CameraAvailabilityCallback mCameraAvailabilityCallback;
		private Map<String, Boolean> mCameraAvailabilityMap;
		private boolean mWaitingToLaunchSecureCamera;
		private Runnable mLaunchCameraRunnable;

		private class CameraAvailabilityCallback extends CameraManager.AvailabilityCallback {
		@Override
		public void onCameraUnavailable(String cameraId) {
		if (DEBUG) Log.d(TAG, "onCameraUnavailble(" + cameraId + ")");
		mCameraAvailabilityMap.put(cameraId, false);
		}

		@Override
		public void onCameraAvailable(String cameraId) {
		if (DEBUG) Log.d(TAG, "onCameraAvailable(" + cameraId + ")");
		mCameraAvailabilityMap.put(cameraId, true);

		// If we were waiting for the camera hardware to become available to launch the
		// secure camera, we can launch it now if all cameras are available. If one or more
		// cameras are still not available, we will get this callback again for those
		// cameras.
		if (mWaitingToLaunchSecureCamera && areAllCamerasAvailable()) {
		mKeyguardBottomArea.launchCamera();
		mWaitingToLaunchSecureCamera = false;

		// We no longer need to launch the camera after the timeout hits.
		mHandler.removeCallbacks(mLaunchCameraRunnable);
		}
		}
		}

		public SecureCameraLaunchManager(Context context, KeyguardBottomAreaView keyguardBottomArea) {
		mContext = context;
		mHandler = new Handler();
		mLockPatternUtils = new LockPatternUtils(context);
		mKeyguardBottomArea = keyguardBottomArea;

		mCameraManager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE);
		mCameraAvailabilityCallback = new CameraAvailabilityCallback();

		// An onCameraAvailable() or onCameraUnavailable() callback will be received for each camera
		// when the availability callback is registered, thus initializing the map.
		//
		// Keeping track of the state of all cameras using the onCameraAvailable() and
		// onCameraUnavailable() callbacks can get messy when dealing with hot-pluggable cameras.
		// However, we have a timeout in place such that we will never hang waiting for cameras.
		mCameraAvailabilityMap = new HashMap<String, Boolean>();

		mWaitingToLaunchSecureCamera = false;
		mLaunchCameraRunnable = new Runnable() {
		@Override
		public void run() {
		if (mWaitingToLaunchSecureCamera) {
		Log.w(TAG, "Timeout waiting for camera availability");
		mKeyguardBottomArea.launchCamera();
		mWaitingToLaunchSecureCamera = false;
		}
		}
		};
		}

		/**
		* Initializes the SecureCameraManager and starts listening for camera availability.
		*/
		public void create() {
		mCameraManager.registerAvailabilityCallback(mCameraAvailabilityCallback, mHandler);
		}

		/**
		* Stops listening for camera availability and cleans up the SecureCameraManager.
		*/
		public void destroy() {
		mCameraManager.unregisterAvailabilityCallback(mCameraAvailabilityCallback);
		}

		/**
		* Called when the user is starting to swipe horizontally, possibly to start the secure camera.
		* Although this swipe ultimately may not result in the secure camera opening, we need to stop
		* all other camera usage (e.g., Face Unlock) as soon as possible. We send out a broadcast to
		* notify other apps that they should close the camera immediately. The broadcast is sent even
		* if the camera appears to be available, because there could be an app that is about to open
		* the camera.
		*/
		public void onSwipingStarted() {
		if (DEBUG) Log.d(TAG, "onSwipingStarted");
		AsyncTask.execute(new Runnable() {
		@Override
		public void run() {
		Intent intent = new Intent();
		intent.setAction(CLOSE_CAMERA_ACTION_NAME);
		intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
		mContext.sendBroadcast(intent);
		}
		});
		}

		/**
		* Called when the secure camera should be started. If the camera is available or the secure
		* camera app has indicated that it will wait for camera availability, the secure camera app is
		* launched immediately. Otherwise, we wait for the camera to become available (or timeout)
		* before launching the secure camera.
		*/
		public void startSecureCameraLaunch() {
		if (DEBUG) Log.d(TAG, "startSecureCameraLunch");
		if (areAllCamerasAvailable() \|\| targetWillWaitForCameraAvailable()) {
		mKeyguardBottomArea.launchCamera();
		} else {
		mWaitingToLaunchSecureCamera = true;
		mHandler.postDelayed(mLaunchCameraRunnable, CAMERA_AVAILABILITY_TIMEOUT_MS);
		}
		}

		/**
		* Returns true if all of the cameras we are tracking are currently available.
		*/
		private boolean areAllCamerasAvailable() {
		for (boolean cameraAvailable: mCameraAvailabilityMap.values()) {
		if (!cameraAvailable) {
		return false;
		}
		}
		return true;
		}

		/**
		* Determines if the secure camera app will wait for the camera hardware to become available
		* before trying to open the camera. If so, we can fire off an intent to start the secure
		* camera app before the camera is available. Otherwise, it is our responsibility to wait for
		* the camera hardware to become available before firing off the intent to start the secure
		* camera.
		*
		* Ideally we are able to fire off the secure camera intent as early as possibly so that, if the
		* camera is closing, it can continue to close while the secure camera app is opening. This
		* improves secure camera startup time.
		*/
		private boolean targetWillWaitForCameraAvailable() {
		// Create intent that would launch the secure camera.
		Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE)
		.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
		PackageManager packageManager = mContext.getPackageManager();

		// Get the list of applications that can handle the intent.
		final List<ResolveInfo> appList = packageManager.queryIntentActivitiesAsUser(
		intent, PackageManager.MATCH_DEFAULT_ONLY, KeyguardUpdateMonitor.getCurrentUser());
		if (appList.size() == 0) {
		if (DEBUG) Log.d(TAG, "No targets found for secure camera intent");
		return false;
		}

		// Get the application that the intent resolves to.
		ResolveInfo resolved = packageManager.resolveActivityAsUser(intent,
		PackageManager.MATCH_DEFAULT_ONLY \| PackageManager.GET_META_DATA,
		KeyguardUpdateMonitor.getCurrentUser());

		if (resolved == null \|\| resolved.activityInfo == null) {
		return false;
		}

		// If we would need to launch the resolver activity, then we can't assume that the target
		// is one that would wait for the camera.
		if (wouldLaunchResolverActivity(resolved, appList)) {
		if (DEBUG) Log.d(TAG, "Secure camera intent would launch resolver");
		return false;
		}

		// If the target doesn't have meta-data we must assume it won't wait for the camera.
		if (resolved.activityInfo.metaData == null \|\| resolved.activityInfo.metaData.isEmpty()) {
		if (DEBUG) Log.d(TAG, "No meta-data found for secure camera application");
		return false;
		}

		// Check the secure camera app meta-data to see if it indicates that it will wait for the
		// camera to become available.
		boolean willWaitForCameraAvailability =
		resolved.activityInfo.metaData.getBoolean(META_DATA_WILL_WAIT_FOR_CAMERA_AVAILABLE);

		if (DEBUG) Log.d(TAG, "Target will wait for camera: " + willWaitForCameraAvailability);

		return willWaitForCameraAvailability;
		}

		/**
		* Determines if the activity that would be launched by the intent is the ResolverActivity.
		*/
		private boolean wouldLaunchResolverActivity(ResolveInfo resolved, List<ResolveInfo> appList) {
		// If the list contains the resolved activity, then it can't be the ResolverActivity itself.
		for (int i = 0; i < appList.size(); i++) {
		ResolveInfo tmp = appList.get(i);
		if (tmp.activityInfo.name.equals(resolved.activityInfo.name)
		&& tmp.activityInfo.packageName.equals(resolved.activityInfo.packageName)) {
		return false;
		}
		}
		return true;
		}
		}