Use Flashlight API in quick settings (fab0d814) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/qs/tiles/FlashlightTile.java

+5 −34

Original line number	Diff line number	Diff line
		@@ -17,7 +17,6 @@
		package com.android.systemui.qs.tiles;

		import android.app.ActivityManager;
		import android.os.SystemClock;

		import com.android.systemui.R;
		import com.android.systemui.qs.QSTile;
		@@ -27,16 +26,11 @@ import com.android.systemui.statusbar.policy.FlashlightController;
		public class FlashlightTile extends QSTile<QSTile.BooleanState> implements
		FlashlightController.FlashlightListener {

		/** Grace period for which we consider the flashlight
		* still available because it was recently on. */
		private static final long RECENTLY_ON_DURATION_MILLIS = 500;

		private final AnimationIcon mEnable
		= new AnimationIcon(R.drawable.ic_signal_flashlight_enable_animation);
		private final AnimationIcon mDisable
		= new AnimationIcon(R.drawable.ic_signal_flashlight_disable_animation);
		private final FlashlightController mFlashlightController;
		private long mWasLastOn;

		public FlashlightTile(Host host) {
		super(host);
		@@ -69,33 +63,17 @@ public class FlashlightTile extends QSTile<QSTile.BooleanState> implements
		return;
		}
		boolean newState = !mState.value;
		mFlashlightController.setFlashlight(newState);
		refreshState(newState ? UserBoolean.USER_TRUE : UserBoolean.USER_FALSE);
		mFlashlightController.setFlashlight(newState);
		}

		@Override
		protected void handleUpdateState(BooleanState state, Object arg) {
		if (state.value) {
		mWasLastOn = SystemClock.uptimeMillis();
		}

		state.visible = mFlashlightController.isAvailable();
		state.label = mHost.getContext().getString(R.string.quick_settings_flashlight_label);
		if (arg instanceof UserBoolean) {
		state.value = ((UserBoolean) arg).value;
		}

		if (!state.value && mWasLastOn != 0) {
		if (SystemClock.uptimeMillis() > mWasLastOn + RECENTLY_ON_DURATION_MILLIS) {
		mWasLastOn = 0;
		} else {
		mHandler.removeCallbacks(mRecentlyOnTimeout);
		mHandler.postAtTime(mRecentlyOnTimeout, mWasLastOn + RECENTLY_ON_DURATION_MILLIS);
		}
		}

		// Always show the tile when the flashlight is or was recently on. This is needed because
		// the camera is not available while it is being used for the flashlight.
		state.visible = mWasLastOn != 0 \|\| mFlashlightController.isAvailable();
		state.label = mHost.getContext().getString(R.string.quick_settings_flashlight_label);
		final AnimationIcon icon = state.value ? mEnable : mDisable;
		icon.setAllowAnimation(arg instanceof UserBoolean && ((UserBoolean) arg).userInitiated);
		state.icon = icon;
		@@ -115,8 +93,8 @@ public class FlashlightTile extends QSTile<QSTile.BooleanState> implements
		}

		@Override
		public void onFlashlightOff() {
		refreshState(UserBoolean.BACKGROUND_FALSE);
		public void onFlashlightChanged(boolean enabled) {
		refreshState(enabled ? UserBoolean.BACKGROUND_TRUE : UserBoolean.BACKGROUND_FALSE);
		}

		@Override
		@@ -128,11 +106,4 @@ public class FlashlightTile extends QSTile<QSTile.BooleanState> implements
		public void onFlashlightAvailabilityChanged(boolean available) {
		refreshState();
		}

		private Runnable mRecentlyOnTimeout = new Runnable() {
		@Override
		public void run() {
		refreshState();
		}
		};
		}

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

+0 −1

Original line number	Diff line number	Diff line
		@@ -336,7 +336,6 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
		}

		public void launchCamera() {
		mFlashlightController.killFlashlight();
		Intent intent = getCameraIntent();
		boolean wouldLaunchResolverActivity = PreviewInflater.wouldLaunchResolverActivity(
		mContext, intent, mLockPatternUtils.getCurrentUser());

packages/SystemUI/src/com/android/systemui/statusbar/policy/FlashlightController.java

+56 −207

Original line number	Diff line number	Diff line
		@@ -17,20 +17,14 @@
		package com.android.systemui.statusbar.policy;

		import android.content.Context;
		import android.graphics.SurfaceTexture;
		import android.hardware.camera2.CameraAccessException;
		import android.hardware.camera2.CameraCaptureSession;
		import android.hardware.camera2.CameraCharacteristics;
		import android.hardware.camera2.CameraDevice;
		import android.hardware.camera2.CameraManager;
		import android.hardware.camera2.CameraMetadata;
		import android.hardware.camera2.CaptureRequest;
		import android.os.Handler;
		import android.os.HandlerThread;
		import android.os.Process;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.Size;
		import android.view.Surface;

		import java.lang.ref.WeakReference;
		import java.util.ArrayList;
		@@ -44,7 +38,7 @@ public class FlashlightController {
		private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);

		private static final int DISPATCH_ERROR = 0;
		private static final int DISPATCH_OFF = 1;
		private static final int DISPATCH_CHANGED = 1;
		private static final int DISPATCH_AVAILABILITY_CHANGED = 2;

		private final CameraManager mCameraManager;
		@@ -57,52 +51,50 @@ public class FlashlightController {
		/** Lock on {@code this} when accessing */
		private boolean mFlashlightEnabled;

		private String mCameraId;
		private boolean mCameraAvailable;
		private CameraDevice mCameraDevice;
		private CaptureRequest mFlashlightRequest;
		private CameraCaptureSession mSession;
		private SurfaceTexture mSurfaceTexture;
		private Surface mSurface;
		private final String mCameraId;
		private boolean mTorchAvailable;

		public FlashlightController(Context mContext) {
		mCameraManager = (CameraManager) mContext.getSystemService(Context.CAMERA_SERVICE);
		initialize();
		}

		public void initialize() {
		String cameraId = null;
		try {
		mCameraId = getCameraId();
		cameraId = getCameraId();
		} catch (Throwable e) {
		Log.e(TAG, "Couldn't initialize.", e);
		return;
		} finally {
		mCameraId = cameraId;
		}

		if (mCameraId != null) {
		ensureHandler();
		mCameraManager.registerAvailabilityCallback(mAvailabilityCallback, mHandler);
		mCameraManager.registerTorchCallback(mTorchCallback, mHandler);
		}
		}

		public synchronized void setFlashlight(boolean enabled) {
		public void setFlashlight(boolean enabled) {
		boolean pendingError = false;
		synchronized (this) {
		if (mFlashlightEnabled != enabled) {
		mFlashlightEnabled = enabled;
		postUpdateFlashlight();
		try {
		mCameraManager.setTorchMode(mCameraId, enabled);
		} catch (CameraAccessException e) {
		Log.e(TAG, "Couldn't set torch mode", e);
		mFlashlightEnabled = false;
		pendingError = true;
		}
		}

		public void killFlashlight() {
		boolean enabled;
		synchronized (this) {
		enabled = mFlashlightEnabled;
		}
		if (enabled) {
		mHandler.post(mKillFlashlightRunnable);
		dispatchModeChanged(mFlashlightEnabled);
		if (pendingError) {
		dispatchError();
		}
		}

		public synchronized boolean isAvailable() {
		return mCameraAvailable;
		return mTorchAvailable;
		}

		public void addListener(FlashlightListener l) {
		@@ -126,42 +118,6 @@ public class FlashlightController {
		}
		}

		private void startDevice() throws CameraAccessException {
		mCameraManager.openCamera(getCameraId(), mCameraListener, mHandler);
		}

		private void startSession() throws CameraAccessException {
		mSurfaceTexture = new SurfaceTexture(false);
		Size size = getSmallestSize(mCameraDevice.getId());
		mSurfaceTexture.setDefaultBufferSize(size.getWidth(), size.getHeight());
		mSurface = new Surface(mSurfaceTexture);
		ArrayList<Surface> outputs = new ArrayList<>(1);
		outputs.add(mSurface);
		mCameraDevice.createCaptureSession(outputs, mSessionListener, mHandler);
		}

		private Size getSmallestSize(String cameraId) throws CameraAccessException {
		Size[] outputSizes = mCameraManager.getCameraCharacteristics(cameraId)
		.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)
		.getOutputSizes(SurfaceTexture.class);
		if (outputSizes == null \|\| outputSizes.length == 0) {
		throw new IllegalStateException(
		"Camera " + cameraId + "doesn't support any outputSize.");
		}
		Size chosen = outputSizes[0];
		for (Size s : outputSizes) {
		if (chosen.getWidth() >= s.getWidth() && chosen.getHeight() >= s.getHeight()) {
		chosen = s;
		}
		}
		return chosen;
		}

		private void postUpdateFlashlight() {
		ensureHandler();
		mHandler.post(mUpdateFlashlightRunnable);
		}

		private String getCameraId() throws CameraAccessException {
		String[] ids = mCameraManager.getCameraIdList();
		for (String id : ids) {
		@@ -176,70 +132,12 @@ public class FlashlightController {
		return null;
		}

		private void updateFlashlight(boolean forceDisable) {
		try {
		boolean enabled;
		synchronized (this) {
		enabled = mFlashlightEnabled && !forceDisable;
		}
		if (enabled) {
		if (mCameraDevice == null) {
		startDevice();
		return;
		}
		if (mSession == null) {
		startSession();
		return;
		}
		if (mFlashlightRequest == null) {
		CaptureRequest.Builder builder = mCameraDevice.createCaptureRequest(
		CameraDevice.TEMPLATE_PREVIEW);
		builder.set(CaptureRequest.FLASH_MODE, CameraMetadata.FLASH_MODE_TORCH);
		builder.addTarget(mSurface);
		CaptureRequest request = builder.build();
		mSession.capture(request, null, mHandler);
		mFlashlightRequest = request;
		}
		} else {
		if (mCameraDevice != null) {
		mCameraDevice.close();
		teardown();
		}
		}

		} catch (CameraAccessException\|IllegalStateException\|UnsupportedOperationException e) {
		Log.e(TAG, "Error in updateFlashlight", e);
		handleError();
		}
		}

		private void teardown() {
		mCameraDevice = null;
		mSession = null;
		mFlashlightRequest = null;
		if (mSurface != null) {
		mSurface.release();
		mSurfaceTexture.release();
		}
		mSurface = null;
		mSurfaceTexture = null;
		}

		private void handleError() {
		synchronized (this) {
		mFlashlightEnabled = false;
		}
		dispatchError();
		dispatchOff();
		updateFlashlight(true /* forceDisable */);
		}

		private void dispatchOff() {
		dispatchListeners(DISPATCH_OFF, false /* argument (ignored) */);
		private void dispatchModeChanged(boolean enabled) {
		dispatchListeners(DISPATCH_CHANGED, enabled);
		}

		private void dispatchError() {
		dispatchListeners(DISPATCH_ERROR, false /* argument (ignored) */);
		dispatchListeners(DISPATCH_CHANGED, false /* argument (ignored) */);
		}

		private void dispatchAvailabilityChanged(boolean available) {
		@@ -255,8 +153,8 @@ public class FlashlightController {
		if (l != null) {
		if (message == DISPATCH_ERROR) {
		l.onFlashlightError();
		} else if (message == DISPATCH_OFF) {
		l.onFlashlightOff();
		} else if (message == DISPATCH_CHANGED) {
		l.onFlashlightChanged(argument);
		} else if (message == DISPATCH_AVAILABILITY_CHANGED) {
		l.onFlashlightAvailabilityChanged(argument);
		}
		@@ -279,106 +177,57 @@ public class FlashlightController {
		}
		}

		private final CameraDevice.StateListener mCameraListener = new CameraDevice.StateListener() {
		@Override
		public void onOpened(CameraDevice camera) {
		mCameraDevice = camera;
		postUpdateFlashlight();
		}

		@Override
		public void onDisconnected(CameraDevice camera) {
		if (mCameraDevice == camera) {
		dispatchOff();
		teardown();
		}
		}

		@Override
		public void onError(CameraDevice camera, int error) {
		Log.e(TAG, "Camera error: camera=" + camera + " error=" + error);
		if (camera == mCameraDevice \|\| mCameraDevice == null) {
		handleError();
		}
		}
		};
		private final CameraManager.TorchCallback mTorchCallback =
		new CameraManager.TorchCallback() {

		private final CameraCaptureSession.StateListener mSessionListener =
		new CameraCaptureSession.StateListener() {
		@Override
		public void onConfigured(CameraCaptureSession session) {
		if (session.getDevice() == mCameraDevice) {
		mSession = session;
		} else {
		session.close();
		}
		postUpdateFlashlight();
		}

		@Override
		public void onConfigureFailed(CameraCaptureSession session) {
		Log.e(TAG, "Configure failed.");
		if (mSession == null \|\| mSession == session) {
		handleError();
		}
		}
		};

		private final Runnable mUpdateFlashlightRunnable = new Runnable() {
		@Override
		public void run() {
		updateFlashlight(false /* forceDisable */);
		}
		};

		private final Runnable mKillFlashlightRunnable = new Runnable() {
		@Override
		public void run() {
		synchronized (this) {
		mFlashlightEnabled = false;
		public void onTorchModeUnavailable(String cameraId) {
		if (TextUtils.equals(cameraId, mCameraId)) {
		setCameraAvailable(false);
		}
		updateFlashlight(true /* forceDisable */);
		dispatchOff();
		}
		};

		private final CameraManager.AvailabilityCallback mAvailabilityCallback =
		new CameraManager.AvailabilityCallback() {
		@Override
		public void onCameraAvailable(String cameraId) {
		if (DEBUG) Log.d(TAG, "onCameraAvailable(" + cameraId + ")");
		if (cameraId.equals(mCameraId)) {
		public void onTorchModeChanged(String cameraId, boolean enabled) {
		if (TextUtils.equals(cameraId, mCameraId)) {
		setCameraAvailable(true);
		}
		}

		@Override
		public void onCameraUnavailable(String cameraId) {
		if (DEBUG) Log.d(TAG, "onCameraUnavailable(" + cameraId + ")");
		if (cameraId.equals(mCameraId)) {
		setCameraAvailable(false);
		setTorchMode(enabled);
		}
		}

		private void setCameraAvailable(boolean available) {
		boolean changed;
		synchronized (FlashlightController.this) {
		changed = mCameraAvailable != available;
		mCameraAvailable = available;
		changed = mTorchAvailable != available;
		mTorchAvailable = available;
		}
		if (changed) {
		if (DEBUG) Log.d(TAG, "dispatchAvailabilityChanged(" + available + ")");
		dispatchAvailabilityChanged(available);
		}
		}

		private void setTorchMode(boolean enabled) {
		boolean changed;
		synchronized (FlashlightController.this) {
		changed = mFlashlightEnabled != enabled;
		mFlashlightEnabled = enabled;
		}
		if (changed) {
		if (DEBUG) Log.d(TAG, "dispatchModeChanged(" + enabled + ")");
		dispatchModeChanged(enabled);
		}
		}
		};

		public interface FlashlightListener {

		/**
		* Called when the flashlight turns off unexpectedly.
		* Called when the flashlight was turned off or on.
		* @param enabled true if the flashlight is currently turned on.
		*/
		void onFlashlightOff();
		void onFlashlightChanged(boolean enabled);


		/**
		* Called when there is an error that turns the flashlight off.