Update dialer sources.

Test: Built package and system image.

This change clobbers the old source, and is an export
from an internal Google repository.

The internal repository was forked form Android in March,
and this change includes modifications since then, to
near the v8 release.

Since the fork, we've moved code from monolithic to independent modules. In addition,
we've switched to Blaze/Bazel as the build sysetm. This export, however, still uses make.

New dependencies have been added:
- Dagger
- Auto-Value
- Glide
- Libshortcutbadger

Going forward, development will still be in Google3, and the Gerrit release
will become an automated export, with the next drop happening in ~ two weeks.

Android.mk includes local modifications from ToT.

Abridged changelog:

Bug fixes
● Not able to mute, add a call when using Phone app in multiwindow mode
● Double tap on keypad triggering multiple key and tones
● Reported spam numbers not showing as spam in the call log
● Crash when user tries to block number while Phone app is not set as default
● Crash when user picks a number from search auto-complete list

Visual Voicemail (VVM) improvements
● Share Voicemail audio via standard exporting mechanisms that support file attachment
(email, MMS, etc.)
● Make phone number, email and web sites in VVM transcript clickable
● Set PIN before declining VVM Terms of Service {Carrier}
● Set client type for outbound visual voicemail SMS {Carrier}

New incoming call and incall UI on older devices
(Android M)
● Updated Phone app icon
● New incall UI (large buttons, button labels)
● New and animated Answer/Reject gestures

Accessibility
● Add custom answer/decline call buttons on answer screen for touch exploration
accessibility services
● Increase size of touch target
● Add verbal feedback when a Voicemail fails to load
● Fix pressing of Phone buttons while in a phone call using Switch Access
● Fix selecting and opening contacts in talkback mode
● Split focus for ‘Learn More’ link in caller id & spam to help distinguish similar text

Other
● Backup & Restore for App Preferences
● Prompt user to enable Wi-Fi calling if the call ends due to out of service and Wi-Fi is
connected
● Rename “Dialpad” to “Keypad”
● Show "Private number" for restricted calls
● Delete unused items (vcard, add contact, call history) from Phone menu

Change-Id: I2a7e53532a24c21bf308bf0a6d178d7ddbca4958

1 files changed, 822 insertions, 0 deletions

diff --git a/java/com/android/dialer/callcomposer/camera/CameraManager.java b/java/com/android/dialer/callcomposer/camera/CameraManager.java
new file mode 100644
index 000000000..87cd16a99
--- /dev/null
+++ b/java/com/android/dialer/callcomposer/camera/CameraManager.java
@@ -0,0 +1,822 @@
+/*
+ * 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.dialer.callcomposer.camera;
+
+import android.content.Context;
+import android.hardware.Camera;
+import android.hardware.Camera.CameraInfo;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Looper;
+import android.support.annotation.NonNull;
+import android.support.annotation.VisibleForTesting;
+import android.text.TextUtils;
+import android.view.MotionEvent;
+import android.view.OrientationEventListener;
+import android.view.Surface;
+import android.view.View;
+import android.view.WindowManager;
+import com.android.dialer.callcomposer.camera.camerafocus.FocusOverlayManager;
+import com.android.dialer.callcomposer.camera.camerafocus.RenderOverlay;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.LogUtil;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Class which manages interactions with the camera, but does not do any UI. This class is designed
+ * to be a singleton to ensure there is one component managing the camera and releasing the native
+ * resources. In order to acquire a camera, a caller must:
+ *
+ * <ul>
+ *   <li>Call selectCamera to select front or back camera
+ *   <li>Call setSurface to control where the preview is shown
+ *   <li>Call openCamera to request the camera start preview
+ * </ul>
+ *
+ * Callers should call onPause and onResume to ensure that the camera is release while the activity
+ * is not active. This class is not thread safe. It should only be called from one thread (the UI
+ * thread or test thread)
+ */
+public class CameraManager implements FocusOverlayManager.Listener {
+  /** Callbacks for the camera manager listener */
+  public interface CameraManagerListener {
+    void onCameraError(int errorCode, Exception e);
+
+    void onCameraChanged();
+  }
+
+  /** Callback when taking image or video */
+  public interface MediaCallback {
+    int MEDIA_CAMERA_CHANGED = 1;
+    int MEDIA_NO_DATA = 2;
+
+    void onMediaReady(Uri uriToMedia, String contentType, int width, int height);
+
+    void onMediaFailed(Exception exception);
+
+    void onMediaInfo(int what);
+  }
+
+  // Error codes
+  private static final int ERROR_OPENING_CAMERA = 1;
+  private static final int ERROR_SHOWING_PREVIEW = 2;
+  private static final int ERROR_HARDWARE_ACCELERATION_DISABLED = 3;
+  private static final int ERROR_TAKING_PICTURE = 4;
+
+  private static final int NO_CAMERA_SELECTED = -1;
+
+  private static final Camera.ShutterCallback DUMMY_SHUTTER_CALLBACK =
+      new Camera.ShutterCallback() {
+        @Override
+        public void onShutter() {
+          // Do nothing
+        }
+      };
+
+  private static CameraManager sInstance;
+
+  /** The CameraInfo for the currently selected camera */
+  private final CameraInfo mCameraInfo;
+
+  /** The index of the selected camera or NO_CAMERA_SELECTED if a camera hasn't been selected yet */
+  private int mCameraIndex;
+
+  /** True if the device has front and back cameras */
+  private final boolean mHasFrontAndBackCamera;
+
+  /** True if the camera should be open (may not yet be actually open) */
+  private boolean mOpenRequested;
+
+  /** The preview view to show the preview on */
+  private CameraPreview mCameraPreview;
+
+  /** The helper classs to handle orientation changes */
+  private OrientationHandler mOrientationHandler;
+
+  /** Tracks whether the preview has hardware acceleration */
+  private boolean mIsHardwareAccelerationSupported;
+
+  /**
+   * The task for opening the camera, so it doesn't block the UI thread Using AsyncTask rather than
+   * SafeAsyncTask because the tasks need to be serialized, but don't need to be on the UI thread
+   * TODO: If we have other AyncTasks (not SafeAsyncTasks) this may contend and we may need
+   * to create a dedicated thread, or synchronize the threads in the thread pool
+   */
+  private AsyncTask<Integer, Void, Camera> mOpenCameraTask;
+
+  /**
+   * The camera index that is queued to be opened, but not completed yet, or NO_CAMERA_SELECTED if
+   * no open task is pending
+   */
+  private int mPendingOpenCameraIndex = NO_CAMERA_SELECTED;
+
+  /** The instance of the currently opened camera */
+  private Camera mCamera;
+
+  /** The rotation of the screen relative to the camera's natural orientation */
+  private int mRotation;
+
+  /** The callback to notify when errors or other events occur */
+  private CameraManagerListener mListener;
+
+  /** True if the camera is currently in the process of taking an image */
+  private boolean mTakingPicture;
+
+  /** Manages auto focus visual and behavior */
+  private final FocusOverlayManager mFocusOverlayManager;
+
+  private CameraManager() {
+    mCameraInfo = new CameraInfo();
+    mCameraIndex = NO_CAMERA_SELECTED;
+
+    // Check to see if a front and back camera exist
+    boolean hasFrontCamera = false;
+    boolean hasBackCamera = false;
+    final CameraInfo cameraInfo = new CameraInfo();
+    final int cameraCount = Camera.getNumberOfCameras();
+    try {
+      for (int i = 0; i < cameraCount; i++) {
+        Camera.getCameraInfo(i, cameraInfo);
+        if (cameraInfo.facing == CameraInfo.CAMERA_FACING_FRONT) {
+          hasFrontCamera = true;
+        } else if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
+          hasBackCamera = true;
+        }
+        if (hasFrontCamera && hasBackCamera) {
+          break;
+        }
+      }
+    } catch (final RuntimeException e) {
+      LogUtil.e("CameraManager.CameraManager", "Unable to load camera info", e);
+    }
+    mHasFrontAndBackCamera = hasFrontCamera && hasBackCamera;
+    mFocusOverlayManager = new FocusOverlayManager(this, Looper.getMainLooper());
+
+    // Assume the best until we are proven otherwise
+    mIsHardwareAccelerationSupported = true;
+  }
+
+  /** Gets the singleton instance */
+  public static CameraManager get() {
+    if (sInstance == null) {
+      sInstance = new CameraManager();
+    }
+    return sInstance;
+  }
+
+  /**
+   * Sets the surface to use to display the preview This must only be called AFTER the CameraPreview
+   * has a texture ready
+   *
+   * @param preview The preview surface view
+   */
+  void setSurface(final CameraPreview preview) {
+    if (preview == mCameraPreview) {
+      return;
+    }
+
+    if (preview != null) {
+      Assert.checkArgument(preview.isValid());
+      preview.setOnTouchListener(
+          new View.OnTouchListener() {
+            @Override
+            public boolean onTouch(final View view, final MotionEvent motionEvent) {
+              if ((motionEvent.getActionMasked() & MotionEvent.ACTION_UP)
+                  == MotionEvent.ACTION_UP) {
+                mFocusOverlayManager.setPreviewSize(view.getWidth(), view.getHeight());
+                mFocusOverlayManager.onSingleTapUp(
+                    (int) motionEvent.getX() + view.getLeft(),
+                    (int) motionEvent.getY() + view.getTop());
+              }
+              view.performClick();
+              return true;
+            }
+          });
+    }
+    mCameraPreview = preview;
+    tryShowPreview();
+  }
+
+  public void setRenderOverlay(final RenderOverlay renderOverlay) {
+    mFocusOverlayManager.setFocusRenderer(
+        renderOverlay != null ? renderOverlay.getPieRenderer() : null);
+  }
+
+  /** Convenience function to swap between front and back facing cameras */
+  public void swapCamera() {
+    Assert.checkState(mCameraIndex >= 0);
+    selectCamera(
+        mCameraInfo.facing == CameraInfo.CAMERA_FACING_FRONT
+            ? CameraInfo.CAMERA_FACING_BACK
+            : CameraInfo.CAMERA_FACING_FRONT);
+  }
+
+  /**
+   * Selects the first camera facing the desired direction, or the first camera if there is no
+   * camera in the desired direction
+   *
+   * @param desiredFacing One of the CameraInfo.CAMERA_FACING_* constants
+   * @return True if a camera was selected, or false if selecting a camera failed
+   */
+  public boolean selectCamera(final int desiredFacing) {
+    try {
+      // We already selected a camera facing that direction
+      if (mCameraIndex >= 0 && mCameraInfo.facing == desiredFacing) {
+        return true;
+      }
+
+      final int cameraCount = Camera.getNumberOfCameras();
+      Assert.checkState(cameraCount > 0);
+
+      mCameraIndex = NO_CAMERA_SELECTED;
+      setCamera(null);
+      final CameraInfo cameraInfo = new CameraInfo();
+      for (int i = 0; i < cameraCount; i++) {
+        Camera.getCameraInfo(i, cameraInfo);
+        if (cameraInfo.facing == desiredFacing) {
+          mCameraIndex = i;
+          Camera.getCameraInfo(i, mCameraInfo);
+          break;
+        }
+      }
+
+      // There's no camera in the desired facing direction, just select the first camera
+      // regardless of direction
+      if (mCameraIndex < 0) {
+        mCameraIndex = 0;
+        Camera.getCameraInfo(0, mCameraInfo);
+      }
+
+      if (mOpenRequested) {
+        // The camera is open, so reopen with the newly selected camera
+        openCamera();
+      }
+      return true;
+    } catch (final RuntimeException e) {
+      LogUtil.e("CameraManager.selectCamera", "RuntimeException in CameraManager.selectCamera", e);
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_OPENING_CAMERA, e);
+      }
+      return false;
+    }
+  }
+
+  public int getCameraIndex() {
+    return mCameraIndex;
+  }
+
+  public void selectCameraByIndex(final int cameraIndex) {
+    if (mCameraIndex == cameraIndex) {
+      return;
+    }
+
+    try {
+      mCameraIndex = cameraIndex;
+      Camera.getCameraInfo(mCameraIndex, mCameraInfo);
+      if (mOpenRequested) {
+        openCamera();
+      }
+    } catch (final RuntimeException e) {
+      LogUtil.e(
+          "CameraManager.selectCameraByIndex",
+          "RuntimeException in CameraManager.selectCameraByIndex",
+          e);
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_OPENING_CAMERA, e);
+      }
+    }
+  }
+
+  @VisibleForTesting
+  public CameraInfo getCameraInfo() {
+    if (mCameraIndex == NO_CAMERA_SELECTED) {
+      return null;
+    }
+    return mCameraInfo;
+  }
+
+  /** @return True if the device has both a front and back camera */
+  public boolean hasFrontAndBackCamera() {
+    return mHasFrontAndBackCamera;
+  }
+
+  /** Opens the camera on a separate thread and initiates the preview if one is available */
+  void openCamera() {
+    if (mCameraIndex == NO_CAMERA_SELECTED) {
+      // Ensure a selected camera if none is currently selected. This may happen if the
+      // camera chooser is not the default media chooser.
+      selectCamera(CameraInfo.CAMERA_FACING_BACK);
+    }
+    mOpenRequested = true;
+    // We're already opening the camera or already have the camera handle, nothing more to do
+    if (mPendingOpenCameraIndex == mCameraIndex || mCamera != null) {
+      return;
+    }
+
+    // True if the task to open the camera has to be delayed until the current one completes
+    boolean delayTask = false;
+
+    // Cancel any previous open camera tasks
+    if (mOpenCameraTask != null) {
+      mPendingOpenCameraIndex = NO_CAMERA_SELECTED;
+      delayTask = true;
+    }
+
+    mPendingOpenCameraIndex = mCameraIndex;
+    mOpenCameraTask =
+        new AsyncTask<Integer, Void, Camera>() {
+          private Exception mException;
+
+          @Override
+          protected Camera doInBackground(final Integer... params) {
+            try {
+              final int cameraIndex = params[0];
+              LogUtil.v("CameraManager.doInBackground", "Opening camera " + mCameraIndex);
+              return Camera.open(cameraIndex);
+            } catch (final Exception e) {
+              LogUtil.e("CameraManager.doInBackground", "Exception while opening camera", e);
+              mException = e;
+              return null;
+            }
+          }
+
+          @Override
+          protected void onPostExecute(final Camera camera) {
+            // If we completed, but no longer want this camera, then release the camera
+            if (mOpenCameraTask != this || !mOpenRequested) {
+              releaseCamera(camera);
+              cleanup();
+              return;
+            }
+
+            cleanup();
+
+            LogUtil.v(
+                "CameraManager.onPostExecute",
+                "Opened camera " + mCameraIndex + " " + (camera != null));
+            setCamera(camera);
+            if (camera == null) {
+              if (mListener != null) {
+                mListener.onCameraError(ERROR_OPENING_CAMERA, mException);
+              }
+              LogUtil.e("CameraManager.onPostExecute", "Error opening camera");
+            }
+          }
+
+          @Override
+          protected void onCancelled() {
+            super.onCancelled();
+            cleanup();
+          }
+
+          private void cleanup() {
+            mPendingOpenCameraIndex = NO_CAMERA_SELECTED;
+            if (mOpenCameraTask != null && mOpenCameraTask.getStatus() == Status.PENDING) {
+              // If there's another task waiting on this one to complete, start it now
+              mOpenCameraTask.execute(mCameraIndex);
+            } else {
+              mOpenCameraTask = null;
+            }
+          }
+        };
+    LogUtil.v("CameraManager.openCamera", "Start opening camera " + mCameraIndex);
+    if (!delayTask) {
+      mOpenCameraTask.execute(mCameraIndex);
+    }
+  }
+
+  /** Closes the camera releasing the resources it uses */
+  void closeCamera() {
+    mOpenRequested = false;
+    setCamera(null);
+  }
+
+  /**
+   * Sets the listener which will be notified of errors or other events in the camera
+   *
+   * @param listener The listener to notify
+   */
+  public void setListener(final CameraManagerListener listener) {
+    Assert.isMainThread();
+    mListener = listener;
+    if (!mIsHardwareAccelerationSupported && mListener != null) {
+      mListener.onCameraError(ERROR_HARDWARE_ACCELERATION_DISABLED, null);
+    }
+  }
+
+  public void takePicture(final float heightPercent, @NonNull final MediaCallback callback) {
+    Assert.checkState(!mTakingPicture);
+    Assert.isNotNull(callback);
+    mCameraPreview.setFocusable(false);
+    mFocusOverlayManager.cancelAutoFocus();
+    if (mCamera == null) {
+      // The caller should have checked isCameraAvailable first, but just in case, protect
+      // against a null camera by notifying the callback that taking the picture didn't work
+      callback.onMediaFailed(null);
+      return;
+    }
+    final Camera.PictureCallback jpegCallback =
+        new Camera.PictureCallback() {
+          @Override
+          public void onPictureTaken(final byte[] bytes, final Camera camera) {
+            mTakingPicture = false;
+            if (mCamera != camera) {
+              // This may happen if the camera was changed between front/back while the
+              // picture is being taken.
+              callback.onMediaInfo(MediaCallback.MEDIA_CAMERA_CHANGED);
+              return;
+            }
+
+            if (bytes == null) {
+              callback.onMediaInfo(MediaCallback.MEDIA_NO_DATA);
+              return;
+            }
+
+            final Camera.Size size = camera.getParameters().getPictureSize();
+            int width;
+            int height;
+            if (mRotation == 90 || mRotation == 270) {
+              // Is rotated, so swapping dimensions is desired
+              //noinspection SuspiciousNameCombination
+              width = size.height;
+              //noinspection SuspiciousNameCombination
+              height = size.width;
+            } else {
+              width = size.width;
+              height = size.height;
+            }
+            LogUtil.i(
+                "CameraManager.onPictureTaken", "taken picture size: " + bytes.length + " bytes");
+            new ImagePersistTask(
+                    width, height, heightPercent, bytes, mCameraPreview.getContext(), callback)
+                .execute();
+          }
+        };
+
+    mTakingPicture = true;
+    try {
+      mCamera.takePicture(
+          // A shutter callback is required to enable shutter sound
+          DUMMY_SHUTTER_CALLBACK, null /* raw */, null /* postView */, jpegCallback);
+    } catch (final RuntimeException e) {
+      LogUtil.e("CameraManager.takePicture", "RuntimeException in CameraManager.takePicture", e);
+      mTakingPicture = false;
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_TAKING_PICTURE, e);
+      }
+    }
+  }
+
+  /**
+   * Asynchronously releases a camera
+   *
+   * @param camera The camera to release
+   */
+  private void releaseCamera(final Camera camera) {
+    if (camera == null) {
+      return;
+    }
+
+    mFocusOverlayManager.onCameraReleased();
+
+    new AsyncTask<Void, Void, Void>() {
+      @Override
+      protected Void doInBackground(final Void... params) {
+        LogUtil.v("CameraManager.doInBackground", "Releasing camera " + mCameraIndex);
+        camera.release();
+        return null;
+      }
+    }.execute();
+  }
+
+  /** Updates the orientation of the camera to match the orientation of the device */
+  private void updateCameraOrientation() {
+    if (mCamera == null || mCameraPreview == null || mTakingPicture) {
+      return;
+    }
+
+    final WindowManager windowManager =
+        (WindowManager) mCameraPreview.getContext().getSystemService(Context.WINDOW_SERVICE);
+
+    int degrees = 0;
+    switch (windowManager.getDefaultDisplay().getRotation()) {
+      case Surface.ROTATION_0:
+        degrees = 0;
+        break;
+      case Surface.ROTATION_90:
+        degrees = 90;
+        break;
+      case Surface.ROTATION_180:
+        degrees = 180;
+        break;
+      case Surface.ROTATION_270:
+        degrees = 270;
+        break;
+    }
+
+    // The display orientation of the camera (this controls the preview image).
+    int orientation;
+
+    // The clockwise rotation angle relative to the orientation of the camera. This affects
+    // pictures returned by the camera in Camera.PictureCallback.
+    int rotation;
+    if (mCameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
+      orientation = (mCameraInfo.orientation + degrees) % 360;
+      rotation = orientation;
+      // compensate the mirror but only for orientation
+      orientation = (360 - orientation) % 360;
+    } else { // back-facing
+      orientation = (mCameraInfo.orientation - degrees + 360) % 360;
+      rotation = orientation;
+    }
+    mRotation = rotation;
+    try {
+      mCamera.setDisplayOrientation(orientation);
+      final Camera.Parameters params = mCamera.getParameters();
+      params.setRotation(rotation);
+      mCamera.setParameters(params);
+    } catch (final RuntimeException e) {
+      LogUtil.e(
+          "CameraManager.updateCameraOrientation",
+          "RuntimeException in CameraManager.updateCameraOrientation",
+          e);
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_OPENING_CAMERA, e);
+      }
+    }
+  }
+
+  /** Sets the current camera, releasing any previously opened camera */
+  private void setCamera(final Camera camera) {
+    if (mCamera == camera) {
+      return;
+    }
+
+    releaseCamera(mCamera);
+    mCamera = camera;
+    tryShowPreview();
+    if (mListener != null) {
+      mListener.onCameraChanged();
+    }
+  }
+
+  /** Shows the preview if the camera is open and the preview is loaded */
+  private void tryShowPreview() {
+    if (mCameraPreview == null || mCamera == null) {
+      if (mOrientationHandler != null) {
+        mOrientationHandler.disable();
+        mOrientationHandler = null;
+      }
+      //      releaseMediaRecorder(true /* cleanupFile */);
+      mFocusOverlayManager.onPreviewStopped();
+      return;
+    }
+    try {
+      mCamera.stopPreview();
+      updateCameraOrientation();
+
+      final Camera.Parameters params = mCamera.getParameters();
+      final Camera.Size pictureSize = chooseBestPictureSize();
+      final Camera.Size previewSize = chooseBestPreviewSize(pictureSize);
+      params.setPreviewSize(previewSize.width, previewSize.height);
+      params.setPictureSize(pictureSize.width, pictureSize.height);
+      logCameraSize("Setting preview size: ", previewSize);
+      logCameraSize("Setting picture size: ", pictureSize);
+      mCameraPreview.setSize(previewSize, mCameraInfo.orientation);
+      for (final String focusMode : params.getSupportedFocusModes()) {
+        if (TextUtils.equals(focusMode, Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
+          // Use continuous focus if available
+          params.setFocusMode(focusMode);
+          break;
+        }
+      }
+
+      mCamera.setParameters(params);
+      mCameraPreview.startPreview(mCamera);
+      mCamera.startPreview();
+      mCamera.setAutoFocusMoveCallback(
+          new Camera.AutoFocusMoveCallback() {
+            @Override
+            public void onAutoFocusMoving(final boolean start, final Camera camera) {
+              mFocusOverlayManager.onAutoFocusMoving(start);
+            }
+          });
+      mFocusOverlayManager.setParameters(mCamera.getParameters());
+      mFocusOverlayManager.setMirror(mCameraInfo.facing == CameraInfo.CAMERA_FACING_BACK);
+      mFocusOverlayManager.onPreviewStarted();
+      if (mOrientationHandler == null) {
+        mOrientationHandler = new OrientationHandler(mCameraPreview.getContext());
+        mOrientationHandler.enable();
+      }
+    } catch (final IOException e) {
+      LogUtil.e("CameraManager.tryShowPreview", "IOException in CameraManager.tryShowPreview", e);
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_SHOWING_PREVIEW, e);
+      }
+    } catch (final RuntimeException e) {
+      LogUtil.e(
+          "CameraManager.tryShowPreview", "RuntimeException in CameraManager.tryShowPreview", e);
+      if (mListener != null) {
+        mListener.onCameraError(ERROR_SHOWING_PREVIEW, e);
+      }
+    }
+  }
+
+  public boolean isCameraAvailable() {
+    return mCamera != null && !mTakingPicture && mIsHardwareAccelerationSupported;
+  }
+
+  /**
+   * Choose the best picture size by trying to find a size close to the MmsConfig's max size, which
+   * is closest to the screen aspect ratio. In case of RCS conversation returns default size.
+   */
+  private Camera.Size chooseBestPictureSize() {
+    return mCamera.getParameters().getPictureSize();
+  }
+
+  /**
+   * Chose the best preview size based on the picture size. Try to find a size with the same aspect
+   * ratio and size as the picture if possible
+   */
+  private Camera.Size chooseBestPreviewSize(final Camera.Size pictureSize) {
+    final List<Camera.Size> sizes =
+        new ArrayList<Camera.Size>(mCamera.getParameters().getSupportedPreviewSizes());
+    final float aspectRatio = pictureSize.width / (float) pictureSize.height;
+    final int capturePixels = pictureSize.width * pictureSize.height;
+
+    // Sort the sizes so the best size is first
+    Collections.sort(
+        sizes,
+        new SizeComparator(Integer.MAX_VALUE, Integer.MAX_VALUE, aspectRatio, capturePixels));
+
+    return sizes.get(0);
+  }
+
+  private class OrientationHandler extends OrientationEventListener {
+    OrientationHandler(final Context context) {
+      super(context);
+    }
+
+    @Override
+    public void onOrientationChanged(final int orientation) {
+      updateCameraOrientation();
+    }
+  }
+
+  private static class SizeComparator implements Comparator<Camera.Size> {
+    private static final int PREFER_LEFT = -1;
+    private static final int PREFER_RIGHT = 1;
+
+    // The max width/height for the preferred size. Integer.MAX_VALUE if no size limit
+    private final int mMaxWidth;
+    private final int mMaxHeight;
+
+    // The desired aspect ratio
+    private final float mTargetAspectRatio;
+
+    // The desired size (width x height) to try to match
+    private final int mTargetPixels;
+
+    public SizeComparator(
+        final int maxWidth,
+        final int maxHeight,
+        final float targetAspectRatio,
+        final int targetPixels) {
+      mMaxWidth = maxWidth;
+      mMaxHeight = maxHeight;
+      mTargetAspectRatio = targetAspectRatio;
+      mTargetPixels = targetPixels;
+    }
+
+    /**
+     * Returns a negative value if left is a better choice than right, or a positive value if right
+     * is a better choice is better than left. 0 if they are equal
+     */
+    @Override
+    public int compare(final Camera.Size left, final Camera.Size right) {
+      // If one size is less than the max size prefer it over the other
+      if ((left.width <= mMaxWidth && left.height <= mMaxHeight)
+          != (right.width <= mMaxWidth && right.height <= mMaxHeight)) {
+        return left.width <= mMaxWidth ? PREFER_LEFT : PREFER_RIGHT;
+      }
+
+      // If one is closer to the target aspect ratio, prefer it.
+      final float leftAspectRatio = left.width / (float) left.height;
+      final float rightAspectRatio = right.width / (float) right.height;
+      final float leftAspectRatioDiff = Math.abs(leftAspectRatio - mTargetAspectRatio);
+      final float rightAspectRatioDiff = Math.abs(rightAspectRatio - mTargetAspectRatio);
+      if (leftAspectRatioDiff != rightAspectRatioDiff) {
+        return (leftAspectRatioDiff - rightAspectRatioDiff) < 0 ? PREFER_LEFT : PREFER_RIGHT;
+      }
+
+      // At this point they have the same aspect ratio diff and are either both bigger
+      // than the max size or both smaller than the max size, so prefer the one closest
+      // to target size
+      final int leftDiff = Math.abs((left.width * left.height) - mTargetPixels);
+      final int rightDiff = Math.abs((right.width * right.height) - mTargetPixels);
+      return leftDiff - rightDiff;
+    }
+  }
+
+  @Override // From FocusOverlayManager.Listener
+  public void autoFocus() {
+    if (mCamera == null) {
+      return;
+    }
+
+    try {
+      mCamera.autoFocus(
+          new Camera.AutoFocusCallback() {
+            @Override
+            public void onAutoFocus(final boolean success, final Camera camera) {
+              mFocusOverlayManager.onAutoFocus(success, false /* shutterDown */);
+            }
+          });
+    } catch (final RuntimeException e) {
+      LogUtil.e("CameraManager.autoFocus", "RuntimeException in CameraManager.autoFocus", e);
+      // If autofocus fails, the camera should have called the callback with success=false,
+      // but some throw an exception here
+      mFocusOverlayManager.onAutoFocus(false /*success*/, false /*shutterDown*/);
+    }
+  }
+
+  @Override // From FocusOverlayManager.Listener
+  public void cancelAutoFocus() {
+    if (mCamera == null) {
+      return;
+    }
+    try {
+      mCamera.cancelAutoFocus();
+    } catch (final RuntimeException e) {
+      // Ignore
+      LogUtil.e(
+          "CameraManager.cancelAutoFocus", "RuntimeException in CameraManager.cancelAutoFocus", e);
+    }
+  }
+
+  @Override // From FocusOverlayManager.Listener
+  public boolean capture() {
+    return false;
+  }
+
+  @Override // From FocusOverlayManager.Listener
+  public void setFocusParameters() {
+    if (mCamera == null) {
+      return;
+    }
+    try {
+      final Camera.Parameters parameters = mCamera.getParameters();
+      parameters.setFocusMode(mFocusOverlayManager.getFocusMode());
+      if (parameters.getMaxNumFocusAreas() > 0) {
+        // Don't set focus areas (even to null) if focus areas aren't supported, camera may
+        // crash
+        parameters.setFocusAreas(mFocusOverlayManager.getFocusAreas());
+      }
+      parameters.setMeteringAreas(mFocusOverlayManager.getMeteringAreas());
+      mCamera.setParameters(parameters);
+    } catch (final RuntimeException e) {
+      // This occurs when the device is out of space or when the camera is locked
+      LogUtil.e(
+          "CameraManager.setFocusParameters",
+          "RuntimeException in CameraManager setFocusParameters");
+    }
+  }
+
+  public void resetPreview() {
+    mCamera.startPreview();
+    if (mCameraPreview != null) {
+      mCameraPreview.setFocusable(true);
+    }
+  }
+
+  private void logCameraSize(final String prefix, final Camera.Size size) {
+    // Log the camera size and aspect ratio for help when examining bug reports for camera
+    // failures
+    LogUtil.i(
+        "CameraManager.logCameraSize",
+        prefix + size.width + "x" + size.height + " (" + (size.width / (float) size.height) + ")");
+  }
+
+  @VisibleForTesting
+  public void resetCameraManager() {
+    sInstance = null;
+  }
+}