summaryrefslogtreecommitdiffstats
path: root/src/com/android/camera/PhotoModule.java
blob: 8c41fe35b38eca7ce42dd3eb3cccdd86d91cee30 (plain)
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/*
 * Copyright (C) 2012 The Android Open Source Project
 * Copyright (C) 2013-2015 The CyanogenMod 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.camera;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences.Editor;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import android.hardware.Camera;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.media.AudioManager;
import android.media.CameraProfile;
import android.media.SoundPool;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Debug;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.MessageQueue;
import android.os.SystemClock;
import android.provider.MediaStore;
import android.util.Log;
import android.view.KeyEvent;
import android.view.OrientationEventListener;
import android.view.SurfaceHolder;
import android.view.View;
import android.view.WindowManager;
import android.widget.Toast;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.android.camera.app.CameraApp;
import com.android.camera.CameraManager.CameraAFCallback;
import com.android.camera.CameraManager.CameraAFMoveCallback;
import com.android.camera.CameraManager.CameraPictureCallback;
import com.android.camera.CameraManager.CameraProxy;
import com.android.camera.CameraManager.CameraShutterCallback;
import com.android.camera.PhotoModule.NamedImages.NamedEntity;
import com.android.camera.exif.ExifInterface;
import com.android.camera.exif.ExifTag;
import com.android.camera.exif.Rational;
import com.android.camera.ui.CountDownView.OnCountDownFinishedListener;
import com.android.camera.ui.ModuleSwitcher;
import com.android.camera.ui.RotateTextToast;
import com.android.camera.util.ApiHelper;
import com.android.camera.util.CameraUtil;
import com.android.camera.util.GcamHelper;
import com.android.camera.util.UsageStatistics;
import org.codeaurora.snapcam.R;

import android.widget.EditText;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.text.InputType;

import com.android.internal.util.MemInfoReader;
import android.app.ActivityManager;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Vector;
import java.util.HashMap;
import android.util.AttributeSet;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.SystemProperties;

public class PhotoModule
        implements CameraModule,
        PhotoController,
        FocusOverlayManager.Listener,
        CameraPreference.OnPreferenceChangedListener,
        ShutterButton.OnShutterButtonListener,
        MediaSaveService.Listener,
        OnCountDownFinishedListener,
        SensorEventListener {

    private static final String TAG = "CAM_PhotoModule";

   //QCom data members
    private static final int MAX_SHARPNESS_LEVEL = 6;
    private boolean mRestartPreview = false;
    private int mSnapshotMode;
    private int mBurstSnapNum = 1;
    private int mReceivedSnapNum = 0;
    private int mLongshotSnapNum = 0;
    public boolean mFaceDetectionEnabled = false;
    private boolean mLgeHdrMode = false;
    public boolean mHistogramEnabled = false;
    // We number the request code from 1000 to avoid collision with Gallery.
    private static final int REQUEST_CROP = 1000;

    private static final int SETUP_PREVIEW = 1;
    private static final int FIRST_TIME_INIT = 2;
    private static final int CLEAR_SCREEN_DELAY = 3;
    private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 4;
    private static final int SHOW_TAP_TO_FOCUS_TOAST = 5;
    private static final int SWITCH_CAMERA = 6;
    private static final int SWITCH_CAMERA_START_ANIMATION = 7;
    private static final int CAMERA_OPEN_DONE = 8;
    private static final int OPEN_CAMERA_FAIL = 9;
    private static final int CAMERA_DISABLED = 10;
    private static final int SET_PHOTO_UI_PARAMS = 11;
    private static final int SWITCH_TO_GCAM_MODULE = 12;
    private static final int ON_PREVIEW_STARTED = 13;
    private static final int UPDATE_GESTURES_UI = 14;
    private static final int SET_FOCUS_RATIO = 15;

    // The subset of parameters we need to update in setCameraParameters().
    private static final int UPDATE_PARAM_INITIALIZE = 1;
    private static final int UPDATE_PARAM_ZOOM = 2;
    private static final int UPDATE_PARAM_PREFERENCE = 4;
    private static final int UPDATE_PARAM_ALL = -1;

    // This is the delay before we execute onResume tasks when coming
    // from the lock screen, to allow time for onPause to execute.
    private static final int ON_RESUME_TASKS_DELAY_MSEC = 20;

    private static final String DEBUG_IMAGE_PREFIX = "DEBUG_";

    // copied from Camera hierarchy
    private CameraActivity mActivity;
    private CameraProxy mCameraDevice;
    private int mCameraId;
    private Parameters mParameters;
    private boolean mPaused;
    private View mRootView;

    private PhotoUI mUI;

    // The activity is going to switch to the specified camera id. This is
    // needed because texture copy is done in GL thread. -1 means camera is not
    // switching.
    protected int mPendingSwitchCameraId = -1;
    private boolean mOpenCameraFail;
    private boolean mCameraDisabled;

    // When setCameraParametersWhenIdle() is called, we accumulate the subsets
    // needed to be updated in mUpdateSet.
    private int mUpdateSet;

    private static final int SCREEN_DELAY = 2 * 60 * 1000;

    private int mZoomValue;  // The current zoom value.

    private Parameters mInitialParams;
    private boolean mFocusAreaSupported;
    private boolean mMeteringAreaSupported;
    private boolean mAeLockSupported;
    private boolean mAwbLockSupported;
    private boolean mContinuousFocusSupported;
    private boolean mLongshotSave = false;
    private boolean mRefocus = false;
    private boolean mLastPhotoTakenWithRefocus = false;

    // The degrees of the device rotated clockwise from its natural orientation.
    private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN;
    private ComboPreferences mPreferences;
    private String mPrevSavedCDS;
    private boolean isTNREnabled;

    private static final String sTempCropFilename = "crop-temp";

    private boolean mFaceDetectionStarted = false;

    private static final String PERSIST_LONG_ENABLE = "persist.camera.longshot.enable";
    private static final String PERSIST_LONG_SAVE = "persist.camera.longshot.save";
    private static final String PERSIST_PREVIEW_RESTART = "persist.camera.feature.restart";
    private static final String PERSIST_CAPTURE_ANIMATION = "persist.camera.capture.animate";
    private static final String PERSIST_LONGSHOT_MAX_SNAP = "persist.camera.longshot.max";
    private static int mLongShotMaxSnap = -1;

    // Constant from android.hardware.Camera.Parameters
    private static final String KEY_PICTURE_FORMAT = "picture-format";
    private static final String KEY_QC_RAW_PICUTRE_SIZE = "raw-size";
    public static final String PIXEL_FORMAT_JPEG = "jpeg";

    private static final int MIN_SCE_FACTOR = -10;
    private static final int MAX_SCE_FACTOR = +10;
    private int SCE_FACTOR_STEP = 10;

    private boolean mPreviewRestartSupport = false;

    // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true.
    private String mCropValue;
    private Uri mSaveUri;

    private Uri mDebugUri;

    // Used for check memory status for longshot mode
    // Currently, this cancel threshold selection is based on test experiments,
    // we can change it based on memory status or other requirements.
    private static final int LONGSHOT_CANCEL_THRESHOLD = 40 * 1024 * 1024;
    private long SECONDARY_SERVER_MEM;
    private boolean mLongshotActive = false;

    // We use a queue to generated names of the images to be used later
    // when the image is ready to be saved.
    private NamedImages mNamedImages;

    private SoundPool mSoundPool;
    private int mRefocusSound;

    private byte[] mLastJpegData;
    private int mLastJpegOrientation = 0;

    private boolean mShutterPressing = false;

    private static Context mApplicationContext = null;

    private Runnable mDoSnapRunnable = new Runnable() {
        @Override
        public void run() {
            onShutterButtonClick();
        }
    };

    private class OpenCameraThread extends Thread {
        @Override
        public void run() {
            openCamera();
            startPreview();
        }
    }

    private OpenCameraThread mOpenCameraThread = null;
    /**
     * An unpublished intent flag requesting to return as soon as capturing
     * is completed.
     *
     * TODO: consider publishing by moving into MediaStore.
     */
    private static final String EXTRA_QUICK_CAPTURE =
            "android.intent.extra.quickCapture";

    // The display rotation in degrees. This is only valid when mCameraState is
    // not PREVIEW_STOPPED.
    private int mDisplayRotation;
    // The value for android.hardware.Camera.setDisplayOrientation.
    private int mCameraDisplayOrientation;
    // The value for UI components like indicators.
    private int mDisplayOrientation;
    // The value for android.hardware.Camera.Parameters.setRotation.
    private int mJpegRotation;
    // Indicates whether we are using front camera
    private boolean mMirror;
    private boolean mFirstTimeInitialized;
    private boolean mIsImageCaptureIntent;

    private int mCameraState = INIT;
    private boolean mSnapshotOnIdle = false;

    private ContentResolver mContentResolver;

    private LocationManager mLocationManager;
    private boolean mLocationPromptTriggered = false;

    private final PostViewPictureCallback mPostViewPictureCallback =
            new PostViewPictureCallback();
    private final RawPictureCallback mRawPictureCallback =
            new RawPictureCallback();
    private final AutoFocusCallback mAutoFocusCallback =
            new AutoFocusCallback();
    private final Object mAutoFocusMoveCallback =
            ApiHelper.HAS_AUTO_FOCUS_MOVE_CALLBACK
                    ? new AutoFocusMoveCallback()
                    : null;

    private final CameraErrorCallback mErrorCallback = new CameraErrorCallback();
    private final StatsCallback mStatsCallback = new StatsCallback();
    private final MetaDataCallback mMetaDataCallback = new MetaDataCallback();
    private long mFocusStartTime;
    private long mShutterCallbackTime;
    private long mPostViewPictureCallbackTime;
    private long mRawPictureCallbackTime;
    private long mJpegPictureCallbackTime;
    private long mOnResumeTime;
    private byte[] mJpegImageData;

    // These latency time are for the CameraLatency test.
    public long mAutoFocusTime;
    public long mShutterLag;
    public long mShutterToPictureDisplayedTime;
    public long mPictureDisplayedToJpegCallbackTime;
    public long mJpegCallbackFinishTime;
    public long mCaptureStartTime;

    // This handles everything about focus.
    private FocusOverlayManager mFocusManager;

    private String mSceneMode;
    private String mSavedFlashMode = null;

    private final Handler mHandler = new MainHandler();
    private MessageQueue.IdleHandler mIdleHandler = null;

    private PreferenceGroup mPreferenceGroup;

    private boolean mQuickCapture;
    private SensorManager mSensorManager;
    private float[] mGData = new float[3];
    private float[] mMData = new float[3];
    private float[] mR = new float[16];
    private int mHeading = -1;

    // True if all the parameters needed to start preview is ready.
    private boolean mCameraPreviewParamsReady = false;

    private int mManual3AEnabled = 0;
    private static final int MANUAL_FOCUS = 1;
    private static final int MANUAL_WB = 2;
    private static final int MANUAL_EXPOSURE = 4;
    private boolean mAnimateCapture = true;

    private int mJpegFileSizeEstimation = 0;
    private int mRemainingPhotos = -1;
    private static final int SELFIE_FLASH_DURATION = 680;

    private class SelfieThread extends Thread {
        public void run() {
            try {
                Thread.sleep(SELFIE_FLASH_DURATION);
                mActivity.runOnUiThread(new Runnable() {
                    public void run() {
                        mFocusManager.doSnap();
                    }
                });
            } catch(InterruptedException e) {
            }
            selfieThread = null;
        }
    }
    private SelfieThread selfieThread;

    private class MediaSaveNotifyThread extends Thread
    {
        private Uri uri;
        public MediaSaveNotifyThread(Uri uri)
        {
            this.uri = uri;
        }
        public void setUri(Uri uri)
        {
            this.uri = uri;
        }
        public void run()
        {
            while(mLongshotActive) {
                try {
                    Thread.sleep(10);
                } catch(InterruptedException e) {
                }
            }
            mActivity.runOnUiThread(new Runnable() {
                public void run() {
                    if (uri != null)
                        mActivity.notifyNewMedia(uri);
                    mActivity.updateStorageSpaceAndHint();
                    updateRemainingPhotos();
                }
            });
            mediaSaveNotifyThread = null;
        }
    }

    private MediaSaveNotifyThread mediaSaveNotifyThread;
    private MediaSaveService.OnMediaSavedListener mOnMediaSavedListener =
            new MediaSaveService.OnMediaSavedListener() {
                @Override
                public void onMediaSaved(Uri uri) {
                    if(mLongshotActive) {
                        if(mediaSaveNotifyThread == null) {
                            mediaSaveNotifyThread = new MediaSaveNotifyThread(uri);
                            mediaSaveNotifyThread.start();
                        }
                        else
                            mediaSaveNotifyThread.setUri(uri);
                    } else {
                        if (uri != null) {
                            mActivity.notifyNewMedia(uri);
                        }
                    }
                }
            };

    private void checkDisplayRotation() {
        // Set the display orientation if display rotation has changed.
        // Sometimes this happens when the device is held upside
        // down and camera app is opened. Rotation animation will
        // take some time and the rotation value we have got may be
        // wrong. Framework does not have a callback for this now.
        if (CameraUtil.getDisplayRotation(mActivity) != mDisplayRotation) {
            setDisplayOrientation();
        }
        if (SystemClock.uptimeMillis() - mOnResumeTime < 5000) {
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    checkDisplayRotation();
                }
            }, 100);
        }
    }

    public Parameters getParameters()
    {
        return mParameters;
    }

    /**
     * This Handler is used to post message back onto the main thread of the
     * application
     */
    private class MainHandler extends Handler {
        public MainHandler() {
            super(Looper.getMainLooper());
        }

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case SETUP_PREVIEW: {
                    setupPreview();
                    break;
                }

                case CLEAR_SCREEN_DELAY: {
                    mActivity.getWindow().clearFlags(
                            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
                    break;
                }

                case FIRST_TIME_INIT: {
                    initializeFirstTime();
                    break;
                }

                case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
                    setCameraParametersWhenIdle(0);
                    break;
                }

                case SHOW_TAP_TO_FOCUS_TOAST: {
                    showTapToFocusToast();
                    break;
                }

                case SWITCH_CAMERA: {
                    switchCamera();
                    break;
                }

                case SWITCH_CAMERA_START_ANIMATION: {
                    // TODO: Need to revisit
                    // ((CameraScreenNail) mActivity.mCameraScreenNail).animateSwitchCamera();
                    break;
                }

                case CAMERA_OPEN_DONE: {
                    onCameraOpened();
                    break;
                }

                case OPEN_CAMERA_FAIL: {
                    mOpenCameraFail = true;
                    CameraUtil.showErrorAndFinish(mActivity,
                            R.string.cannot_connect_camera);
                    break;
                }

                case CAMERA_DISABLED: {
                    mCameraDisabled = true;
                    CameraUtil.showErrorAndFinish(mActivity,
                            R.string.camera_disabled);
                    break;
                }

               case SET_PHOTO_UI_PARAMS: {
                    setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
                    break;
               }

                case SWITCH_TO_GCAM_MODULE: {
                    mActivity.onModuleSelected(ModuleSwitcher.GCAM_MODULE_INDEX);
                    break;
                }

                case ON_PREVIEW_STARTED: {
                    onPreviewStarted();
                    break;
                }

                case UPDATE_GESTURES_UI: {
                    updateGesturesUI();
                    break;
                }

                case SET_FOCUS_RATIO: {
                    mUI.getFocusRing().setRadiusRatio((Float)msg.obj);
                    break;
                }
            }
        }
    }


    @Override
    public void init(CameraActivity activity, View parent) {
        mActivity = activity;
        mRootView = parent;
        mPreferences = new ComboPreferences(mActivity);
        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal(), activity);
        mCameraId = getPreferredCameraId(mPreferences);
        mContentResolver = mActivity.getContentResolver();
        mApplicationContext = CameraApp.getContext();

        // Surface texture is from camera screen nail and startPreview needs it.
        // This must be done before startPreview.
        mIsImageCaptureIntent = isImageCaptureIntent();

        mPreferences.setLocalId(mActivity, mCameraId);
        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());

        // Power shutter
        mActivity.initPowerShutter(mPreferences);

        // Max brightness
        mActivity.initMaxBrightness(mPreferences);

        if (mOpenCameraThread == null) {
            mOpenCameraThread = new OpenCameraThread();
            mOpenCameraThread.start();
        }
        mUI = new PhotoUI(activity, this, parent);
        initializeControlByIntent();
        mQuickCapture = mActivity.getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
        mLocationManager = new LocationManager(mActivity, mUI);
        mSensorManager = (SensorManager)(mActivity.getSystemService(Context.SENSOR_SERVICE));

        Storage.setSaveSDCard(
            mPreferences.getString(CameraSettings.KEY_CAMERA_SAVEPATH, "0").equals("1"));

        mSoundPool = new SoundPool(1, AudioManager.STREAM_NOTIFICATION, 0);
        mRefocusSound = mSoundPool.load(mActivity, R.raw.camera_click_x5, 1);

        // LGE HDR mode
        if (mApplicationContext != null) {
            mLgeHdrMode = mApplicationContext.getResources().getBoolean(R.bool.lge_hdr_mode);
        }
    }

    private void initializeControlByIntent() {
        mUI.initializeControlByIntent();
        if (mIsImageCaptureIntent) {
            setupCaptureParams();
        }
    }

    private void onPreviewStarted() {
        if (mCameraState == SNAPSHOT_IN_PROGRESS) {
            return;
        }
        mFocusManager.onPreviewStarted();
        startFaceDetection();
        locationFirstRun();
        mUI.enableShutter(true);
    }

    // Prompt the user to pick to record location for the very first run of
    // camera only
    private void locationFirstRun() {
        /* Do not prompt if the preference is already set, this is a secure
         * camera session, or the prompt has already been triggered. */
        if (RecordLocationPreference.isSet(mPreferences) ||
                mActivity.isSecureCamera() || mLocationPromptTriggered) {
            return;
        }
        // Check if the back camera exists
        int backCameraId = CameraHolder.instance().getBackCameraId();
        if (backCameraId == -1) {
            // If there is no back camera, do not show the prompt.
            return;
        }

        mLocationPromptTriggered = true;
        mUI.showLocationDialog();
    }

    @Override
    public void enableRecordingLocation(boolean enable) {
        setLocationPreference(enable ? RecordLocationPreference.VALUE_ON
                : RecordLocationPreference.VALUE_OFF);
    }

    @Override
    public void onPreviewUIReady() {
        if (mPaused || mCameraDevice == null) {
            return;
        }
        Log.v(TAG, "onPreviewUIReady");
        if (mCameraState == PREVIEW_STOPPED) {
            startPreview();
        } else {
            synchronized (mCameraDevice) {
                SurfaceHolder sh = mUI.getSurfaceHolder();
                if (sh == null) {
                    Log.w(TAG, "startPreview: holder for preview are not ready.");
                    return;
                }
                mCameraDevice.setPreviewDisplay(sh);
            }
        }
    }

    @Override
    public void onPreviewUIDestroyed() {
        if (mCameraDevice == null) {
            return;
        }
        try {
            if (mOpenCameraThread != null) {
                mOpenCameraThread.join();
                mOpenCameraThread = null;
            }
        } catch (InterruptedException ex) {
            // ignore
        }
        mCameraDevice.setPreviewDisplay(null);
        stopPreview();
    }

    private void setLocationPreference(String value) {
        mPreferences.edit()
                .putString(CameraSettings.KEY_RECORD_LOCATION, value)
                .apply();
        // TODO: Fix this to use the actual onSharedPreferencesChanged listener
        // instead of invoking manually
        onSharedPreferenceChanged();
    }

    private void onCameraOpened() {
        if (mPaused) {
            return;
        }
        Log.v(TAG, "onCameraOpened");
        openCameraCommon();
        resizeForPreviewAspectRatio();
        mFocusManager.setFocusRing(mUI.getFocusRing());
    }

    private void switchCamera() {
        if (mPaused) return;

        Log.v(TAG, "Start to switch camera. id=" + mPendingSwitchCameraId);
        mCameraId = mPendingSwitchCameraId;
        mPendingSwitchCameraId = -1;
        setCameraId(mCameraId);

        try {
            if (mOpenCameraThread != null) {
                mOpenCameraThread.join();
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        mOpenCameraThread = null;

        // from onPause
        try {
            if (mOpenCameraThread != null) {
                mOpenCameraThread.join();
                mOpenCameraThread = null;
            }
        } catch (InterruptedException ex) {
            // ignore
        }
        closeCamera();
        mUI.collapseCameraControls();
        if (mFocusManager != null) mFocusManager.removeMessages();

        // Restart the camera and initialize the UI. From onCreate.
        mPreferences.setLocalId(mActivity, mCameraId);
        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
        mCameraDevice = CameraUtil.openCamera(
                mActivity, mCameraId, mHandler,
                mActivity.getCameraOpenErrorCallback());

        if (mCameraDevice == null) {
            Log.e(TAG, "Failed to open camera:" + mCameraId + ", aborting.");
            return;
        }
        mParameters = mCameraDevice.getParameters();
        mInitialParams = mParameters;
        initializeCapabilities();
        CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
        mMirror = (info.facing == CameraInfo.CAMERA_FACING_FRONT);
        mFocusManager.setMirror(mMirror);
        mFocusManager.setParameters(mInitialParams);
        setupPreview();

        // reset zoom value index
        mZoomValue = 0;
        resizeForPreviewAspectRatio();
        openCameraCommon();

        // Start switch camera animation. Post a message because
        // onFrameAvailable from the old camera may already exist.
        mHandler.sendEmptyMessage(SWITCH_CAMERA_START_ANIMATION);
    }

    protected void setCameraId(int cameraId) {
        ListPreference pref = mPreferenceGroup.findPreference(CameraSettings.KEY_CAMERA_ID);
        pref.setValue("" + cameraId);
    }

    // either open a new camera or switch cameras
    private void openCameraCommon() {
        loadCameraPreferences();

        mUI.onCameraOpened(mPreferenceGroup, mPreferences, mParameters, this);
        if (mIsImageCaptureIntent) {
            mUI.overrideSettings(CameraSettings.KEY_CAMERA_HDR_PLUS,
                    mActivity.getString(R.string.setting_off_value));
        }
        updateCameraSettings();
        showTapToFocusToastIfNeeded();
        resetManual3ASettings();
        resetMiscSettings();
    }

    @Override
    public void onScreenSizeChanged(int width, int height) {
        if (mFocusManager != null) mFocusManager.setPreviewSize(width, height);
    }

    @Override
    public void onPreviewRectChanged(Rect previewRect) {
        if (mFocusManager != null) mFocusManager.setPreviewRect(previewRect);
    }

    private void resetExposureCompensation() {
        String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
                CameraSettings.EXPOSURE_DEFAULT_VALUE);
        if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
            Editor editor = mPreferences.edit();
            editor.putString(CameraSettings.KEY_EXPOSURE, "0");
            editor.apply();
        }
    }

    private void resetManual3ASettings() {
        String manualExposureDefault = mActivity.getString(
                R.string.pref_camera_manual_exp_default);
        String manualExposureMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_EXPOSURE, manualExposureDefault);
        if (!manualExposureMode.equals(manualExposureDefault)) {
            mUI.setPreference(
                    CameraSettings.KEY_MANUAL_EXPOSURE, manualExposureDefault);
            UpdateManualExposureSettings();
        }
        String manualFocusDefault = mActivity.getString(
                R.string.pref_camera_manual_focus_default);
        String manualFocusMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_FOCUS, manualFocusDefault);
        if (!manualFocusMode.equals(manualFocusDefault)) {
            mUI.setPreference(
                    CameraSettings.KEY_MANUAL_FOCUS, manualFocusDefault);
            UpdateManualFocusSettings();
        }
        String manualWBDefault = mActivity.getString(
                R.string.pref_camera_manual_wb_default);
        String manualWBMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_WB, manualWBDefault);
        if (!manualWBMode.equals(manualWBDefault)) {
            mUI.setPreference(
                    CameraSettings.KEY_MANUAL_WB, manualWBDefault);
            UpdateManualWBSettings();
        }
        mManual3AEnabled = 0;
    }

    private void resetMiscSettings() {
        boolean disableQcomMiscSetting =
                SystemProperties.getBoolean("camera.qcom.misc.disable", false);
        if (disableQcomMiscSetting) {
            mUI.setPreference(CameraSettings.KEY_ZSL, Parameters.ZSL_OFF);
            mUI.setPreference(CameraSettings.KEY_FACE_DETECTION,
                    Parameters.FACE_DETECTION_OFF);
            mUI.setPreference(CameraSettings.KEY_FOCUS_MODE,
                    Parameters.FOCUS_MODE_AUTO);
            mUI.setPreference(CameraSettings.KEY_FLASH_MODE,
                    Parameters.FLASH_MODE_OFF);
            mUI.setPreference(CameraSettings.KEY_DENOISE,
                    Parameters.DENOISE_OFF);
            onSharedPreferenceChanged();
        }
    }

    void setPreviewFrameLayoutCameraOrientation(){
        CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
        //if camera mount angle is 0 or 180, we want to resize preview
        if (info.orientation % 180 == 0){
            mUI.cameraOrientationPreviewResize(true);
        } else{
            mUI.cameraOrientationPreviewResize(false);
        }
    }

    @Override
    public void resizeForPreviewAspectRatio() {
        if ( mCameraDevice == null || mParameters == null) {
            Log.e(TAG, "Camera not yet initialized");
            return;
        }
        setPreviewFrameLayoutCameraOrientation();
        Size size = mParameters.getPreviewSize();
        Log.i(TAG, "Using preview width = " + size.width + "& height = " + size.height);
        mUI.setAspectRatio((float) size.width / size.height);
    }

    @Override
    public void onSwitchSavePath() {
        if (mUI.mMenuInitialized) {
            mUI.setPreference(CameraSettings.KEY_CAMERA_SAVEPATH, "1");
        } else {
            mPreferences.edit()
                    .putString(CameraSettings.KEY_CAMERA_SAVEPATH, "1")
                    .apply();
        }
        RotateTextToast.makeText(mActivity, R.string.on_switch_save_path_to_sdcard,
                Toast.LENGTH_SHORT).show();
    }

    // Snapshots can only be taken after this is called. It should be called
    // once only. We could have done these things in onCreate() but we want to
    // make preview screen appear as soon as possible.
    private void initializeFirstTime() {
        if (mFirstTimeInitialized || mPaused) {
            return;
        }

        // Initialize location service.
        boolean recordLocation = RecordLocationPreference.get(
                mPreferences, mContentResolver);
        mLocationManager.recordLocation(recordLocation);

        mUI.initializeFirstTime();
        MediaSaveService s = mActivity.getMediaSaveService();
        // We set the listener only when both service and shutterbutton
        // are initialized.
        if (s != null) {
            s.setListener(this);
        }

        mNamedImages = new NamedImages();

        mFirstTimeInitialized = true;
        Log.d(TAG, "addIdleHandler in first time initialization");
        addIdleHandler();

    }

    // If the activity is paused and resumed, this method will be called in
    // onResume.
    private void initializeSecondTime() {
        // Start location update if needed.
        boolean recordLocation = RecordLocationPreference.get(
                mPreferences, mContentResolver);
        mLocationManager.recordLocation(recordLocation);
        MediaSaveService s = mActivity.getMediaSaveService();
        if (s != null) {
            s.setListener(this);
        }
        mNamedImages = new NamedImages();
        if (!mIsImageCaptureIntent) {
            mUI.showSwitcher();
        }
        mUI.initializeSecondTime(mParameters);
    }

    private void showTapToFocusToastIfNeeded() {
        // Show the tap to focus toast if this is the first start.
        if (mFocusAreaSupported &&
                mPreferences.getBoolean(CameraSettings.KEY_CAMERA_FIRST_USE_HINT_SHOWN, true)) {
            // Delay the toast for one second to wait for orientation.
            mHandler.sendEmptyMessageDelayed(SHOW_TAP_TO_FOCUS_TOAST, 1000);
        }
    }

    private void addIdleHandler() {
        if (mIdleHandler == null) {
            mIdleHandler = new MessageQueue.IdleHandler() {
                @Override
                public boolean queueIdle() {
                    Storage.ensureOSXCompatible();
                    return false;
                }
            };

            MessageQueue queue = Looper.myQueue();
            queue.addIdleHandler(mIdleHandler);
        }
    }

    private void removeIdleHandler() {
        if (mIdleHandler != null) {
            MessageQueue queue = Looper.myQueue();
            queue.removeIdleHandler(mIdleHandler);
            mIdleHandler = null;
        }
    }

    @Override
    public void startFaceDetection() {
        if (mCameraDevice == null) return;

        if (mFaceDetectionEnabled == false
               || mFaceDetectionStarted || mCameraState != IDLE) return;
        if (mParameters.getMaxNumDetectedFaces() > 0) {
            mFaceDetectionStarted = true;
            CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
            mUI.onStartFaceDetection(mDisplayOrientation,
                    (info.facing == CameraInfo.CAMERA_FACING_FRONT));
            mCameraDevice.setFaceDetectionCallback(mHandler, mUI);
            mCameraDevice.startFaceDetection();
        }
    }

    @Override
    public void stopFaceDetection() {
        if (mFaceDetectionEnabled == false || !mFaceDetectionStarted) return;
        if (mParameters.getMaxNumDetectedFaces() > 0) {
            mFaceDetectionStarted = false;
            mCameraDevice.setFaceDetectionCallback(null, null);
            mCameraDevice.stopFaceDetection();
            mUI.onStopFaceDetection();
        }
    }

    @Override
    public void setFocusRatio(float ratio) {
        mHandler.removeMessages(SET_FOCUS_RATIO);
        Message m = mHandler.obtainMessage(SET_FOCUS_RATIO);
        m.obj = ratio;
        mHandler.sendMessage(m);
    }

    // TODO: need to check cached background apps memory and longshot ION memory
    private boolean isLongshotNeedCancel() {
        if (SECONDARY_SERVER_MEM == 0) {
            ActivityManager am = (ActivityManager) mActivity.getSystemService(
                    Context.ACTIVITY_SERVICE);
            ActivityManager.MemoryInfo memInfo = new ActivityManager.MemoryInfo();
            am.getMemoryInfo(memInfo);
            SECONDARY_SERVER_MEM = memInfo.secondaryServerThreshold;
        }

        long totalMemory = Runtime.getRuntime().totalMemory();
        long maxMemory = Runtime.getRuntime().maxMemory();
        long remainMemory = maxMemory - totalMemory;

        MemInfoReader reader = new MemInfoReader();
        reader.readMemInfo();
        long[] info = reader.getRawInfo();
        long availMem = (info[Debug.MEMINFO_FREE] + info[Debug.MEMINFO_CACHED]) * 1024;

        if (availMem <= SECONDARY_SERVER_MEM || remainMemory <= LONGSHOT_CANCEL_THRESHOLD) {
            Log.e(TAG, "cancel longshot: free=" + info[Debug.MEMINFO_FREE] * 1024
                    + " cached=" + info[Debug.MEMINFO_CACHED] * 1024
                    + " threshold=" + SECONDARY_SERVER_MEM);
            mLongshotActive = false;
            RotateTextToast.makeText(mActivity,R.string.msg_cancel_longshot_for_limited_memory,
                Toast.LENGTH_SHORT).show();
            return true;
        }

        return false;
    }

    private final class LongshotShutterCallback
            implements CameraShutterCallback {
        private int mExpectedLongshotSnapNum;

        public LongshotShutterCallback() {
            mExpectedLongshotSnapNum = mLongshotSnapNum;
        }

        @Override
        public void onShutter(CameraProxy camera) {
            mShutterCallbackTime = System.currentTimeMillis();
            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
            Log.e(TAG, "[KPI Perf] PROFILE_SHUTTER_LAG mShutterLag = " + mShutterLag + "ms");
            synchronized(mCameraDevice) {
                if (mExpectedLongshotSnapNum != mLongshotSnapNum) {
                    return;
                }

                if (++mLongshotSnapNum >= mLongShotMaxSnap &&
                    (mLongShotMaxSnap != -1)) {
                    mLongshotActive = false;
                    mUI.enableShutter(false);
                    mCameraDevice.stopLongshot();
                    return;
                }

                if (mCameraState != LONGSHOT ||
                    !mLongshotActive) {
                    mCameraDevice.stopLongshot();
                    return;
                }

                if(isLongshotNeedCancel()) {
                    return;
                }

                Location loc = getLocationAccordPictureFormat(mParameters.get(KEY_PICTURE_FORMAT));
                if (mLongshotSave) {
                    mCameraDevice.takePicture(mHandler,
                            new LongshotShutterCallback(),
                            mRawPictureCallback, mPostViewPictureCallback,
                            new LongshotPictureCallback(loc));
                } else {
                    mCameraDevice.takePicture(mHandler,new LongshotShutterCallback(),
                            mRawPictureCallback, mPostViewPictureCallback,
                            new JpegPictureCallback(loc));
                }
            }
        }
    }

    private final class ShutterCallback
            implements CameraShutterCallback {

        private boolean mNeedsAnimation;

        public ShutterCallback(boolean needsAnimation) {
            mNeedsAnimation = needsAnimation;
        }

        @Override
        public void onShutter(CameraProxy camera) {
            mShutterCallbackTime = System.currentTimeMillis();
            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
            Log.e(TAG, "[KPI Perf] PROFILE_SHUTTER_LAG mShutterLag = " + mShutterLag + "ms");
            if (mNeedsAnimation) {
                mActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        animateAfterShutter();
                    }
                });
            }
            if (mRefocus) {
                mSoundPool.play(mRefocusSound, 1.0f, 1.0f, 0, 0, 1.0f);
            }
        }
    }
    private final class StatsCallback
           implements android.hardware.Camera.CameraDataCallback {
            @Override
        public void onCameraData(final int [] data, android.hardware.Camera camera) {
            if (!mHistogramEnabled || !mFirstTimeInitialized){
                return;
            }
            mActivity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    mUI.updateHistogramData(data);
                }
           });
        }
    }

    private final class MetaDataCallback
           implements android.hardware.Camera.CameraMetaDataCallback{
        @Override
        public void onCameraMetaData (byte[] data, android.hardware.Camera camera) {
            int metadata[] = new int[3];
            if (data.length >= 12) {
                for (int i =0;i<3;i++) {
                    metadata[i] = byteToInt( (byte []) data, i*4);
                }
                if (metadata[0] != 3) {
                    Log.d(TAG, "Unhandled metadata callback: [" +
                            Arrays.toString(metadata) + "]");
                    return;
                }
                final boolean autoHdrEnabled = metadata[2] == 1;
                mActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        mUI.setAutoHdrEnabled(autoHdrEnabled);
                    }
                });
            }
        }

        private int byteToInt (byte[] b, int offset) {
            int value = 0;
            for (int i = 0; i < 4; i++) {
                int shift = (4 - 1 - i) * 8;
                value += (b[(3-i) + offset] & 0x000000FF) << shift;
            }
            return value;
        }
    }

    private final class PostViewPictureCallback
            implements CameraPictureCallback {
        @Override
        public void onPictureTaken(byte [] data, CameraProxy camera) {
            Log.d(TAG, "PostViewPictureCallback: onPictureTaken()");
            mPostViewPictureCallbackTime = System.currentTimeMillis();
            Log.v(TAG, "mShutterToPostViewCallbackTime = "
                    + (mPostViewPictureCallbackTime - mShutterCallbackTime)
                    + "ms");
        }
    }

    private final class RawPictureCallback
            implements CameraPictureCallback {
        @Override
        public void onPictureTaken(byte [] rawData, CameraProxy camera) {
            Log.d(TAG, "RawPictureCallback: onPictureTaken()");
            mRawPictureCallbackTime = System.currentTimeMillis();
            Log.v(TAG, "mShutterToRawCallbackTime = "
                    + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
        }
    }

    private final class LongshotPictureCallback implements CameraPictureCallback {
        Location mLocation;

        public LongshotPictureCallback(Location loc) {
            mLocation = loc;
        }

        @Override
        public void onPictureTaken(final byte [] jpegData, CameraProxy camera) {
            Log.d(TAG, "LongshotPictureCallback: onPictureTaken()");
            if (mPaused) {
                return;
            }

            String jpegFilePath = new String(jpegData);
            mNamedImages.nameNewImage(mCaptureStartTime);
            NamedEntity name = mNamedImages.getNextNameEntity();
            String title = (name == null) ? null : name.title;
            long date = (name == null) ? -1 : name.date;

            if (title == null) {
                Log.e(TAG, "Unbalanced name/data pair");
                return;
            }


            if  (date == -1 ) {
                Log.e(TAG, "Invalid filename date");
                return;
            }

            String dstPath = Storage.DIRECTORY;
            File sdCard = android.os.Environment.getExternalStorageDirectory();
            File dstFile = new File(dstPath);
            if (dstFile == null) {
                Log.e(TAG, "Destination file path invalid");
                return;
            }

            File srcFile = new File(jpegFilePath);
            if (srcFile == null) {
                Log.e(TAG, "Source file path invalid");
                return;
            }

            if ( srcFile.renameTo(dstFile) ) {
                Size s = mParameters.getPictureSize();
                String pictureFormat = mParameters.get(KEY_PICTURE_FORMAT);
                mActivity.getMediaSaveService().addImage(
                       null, title, date, mLocation, s.width, s.height,
                       0, null, mOnMediaSavedListener, mContentResolver, pictureFormat);
            } else {
                Log.e(TAG, "Failed to move jpeg file");
            }
        }
    }

    private final class JpegPictureCallback
            implements CameraPictureCallback {
        Location mLocation;

        public JpegPictureCallback(Location loc) {
            mLocation = loc;
        }

        @Override
        public void onPictureTaken(final byte [] jpegData, CameraProxy camera) {
            Log.d(TAG, "JpegPictureCallback: onPictureTaken()");
            if (mCameraState != LONGSHOT) {
                mUI.stopSelfieFlash();
                mUI.enableShutter(true);
            }
            if (mPaused) {
                return;
            }
            if (mIsImageCaptureIntent) {
                if (!mRefocus) {
                    stopPreview();
                }
            } else if (mSceneMode == CameraUtil.SCENE_MODE_HDR) {
                mUI.showSwitcher();
                mUI.setSwipingEnabled(true);
            }

            ExifInterface exif = Exif.getExif(jpegData);
            boolean overrideMakerAndModelTag = false;
            if (mApplicationContext != null) {
                overrideMakerAndModelTag =
                    mApplicationContext.getResources()
                       .getBoolean(R.bool.override_maker_and_model_tag);
            }

            if (overrideMakerAndModelTag) {
                ExifTag maker = exif.buildTag(ExifInterface.TAG_MAKE, Build.MANUFACTURER);
                exif.setTag(maker);
                ExifTag model = exif.buildTag(ExifInterface.TAG_MODEL, Build.MODEL);
                exif.setTag(model);
            }

            mReceivedSnapNum = mReceivedSnapNum + 1;
            mJpegPictureCallbackTime = System.currentTimeMillis();
            if(mSnapshotMode == CameraInfo.CAMERA_SUPPORT_MODE_ZSL) {
                Log.v(TAG, "JpegPictureCallback : in zslmode");
                mParameters = mCameraDevice.getParameters();
                mBurstSnapNum = CameraUtil.getNumSnapsPerShutter(mParameters);
            }
            Log.v(TAG, "JpegPictureCallback: Received = " + mReceivedSnapNum + " " +
                      "Burst count = " + mBurstSnapNum);
            // If postview callback has arrived, the captured image is displayed
            // in postview callback. If not, the captured image is displayed in
            // raw picture callback.
            if (mPostViewPictureCallbackTime != 0) {
                mShutterToPictureDisplayedTime =
                        mPostViewPictureCallbackTime - mShutterCallbackTime;
                mPictureDisplayedToJpegCallbackTime =
                        mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
            } else {
                mShutterToPictureDisplayedTime =
                        mRawPictureCallbackTime - mShutterCallbackTime;
                mPictureDisplayedToJpegCallbackTime =
                        mJpegPictureCallbackTime - mRawPictureCallbackTime;
            }
            Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
                    + mPictureDisplayedToJpegCallbackTime + "ms");

            if (isLongshotDone()) {
                mCameraDevice.setLongshot(false);
            }

            boolean needRestartPreview = !mIsImageCaptureIntent
                    && !mPreviewRestartSupport
                    && (mCameraState != LONGSHOT)
                    && (mSnapshotMode != CameraInfo.CAMERA_SUPPORT_MODE_ZSL)
                    && ((mReceivedSnapNum == mBurstSnapNum) && (mCameraState != LONGSHOT));
            needRestartPreview |= (isLongshotDone() && !mFocusManager.isZslEnabled());
            needRestartPreview |= ((mReceivedSnapNum == mBurstSnapNum) &&
                                   !mFocusManager.isZslEnabled() &&
                                   CameraUtil.SCENE_MODE_HDR.equals(mSceneMode));
            needRestartPreview |= mLgeHdrMode && (mCameraState != LONGSHOT);

            boolean backCameraRestartPreviewOnPictureTaken = false;
            boolean frontCameraRestartPreviewOnPictureTaken = false;
            if (mApplicationContext != null) {
                backCameraRestartPreviewOnPictureTaken =
                    mApplicationContext.getResources().getBoolean(R.bool.back_camera_restart_preview_onPictureTaken);
                frontCameraRestartPreviewOnPictureTaken =
                    mApplicationContext.getResources().getBoolean(R.bool.front_camera_restart_preview_onPictureTaken);
            }

            CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
            if ((info.facing == CameraInfo.CAMERA_FACING_BACK
                    && backCameraRestartPreviewOnPictureTaken && (mCameraState != LONGSHOT))
                    || (info.facing == CameraInfo.CAMERA_FACING_FRONT
                    && frontCameraRestartPreviewOnPictureTaken && (mCameraState != LONGSHOT))) {
                needRestartPreview = true;
            }

            if (needRestartPreview) {
                Log.d(TAG, "JpegPictureCallback: needRestartPreview");
                setupPreview();
                if (CameraUtil.FOCUS_MODE_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false))
                        || CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false))) {
                    mCameraDevice.cancelAutoFocus();
                }
            } else if (((mCameraState != LONGSHOT) && (mReceivedSnapNum == mBurstSnapNum))
                        || isLongshotDone()) {
                mUI.enableShutter(true);
                mFocusManager.restartTouchFocusTimer();
                if (CameraUtil.FOCUS_MODE_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false))
                        || CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false))) {
                    mCameraDevice.cancelAutoFocus();
                }
                if (!mIsImageCaptureIntent) {
                    setCameraState(IDLE);
                }
                startFaceDetection();
            }

            mLastPhotoTakenWithRefocus = mRefocus;
            if (mRefocus) {
                final String[] NAMES = { "00.jpg", "01.jpg", "02.jpg", "03.jpg",
                    "04.jpg", "DepthMapImage.y", "AllFocusImage.jpg" };
                try {
                    FileOutputStream out = mActivity.openFileOutput(NAMES[mReceivedSnapNum - 1],
                            Context.MODE_PRIVATE);
                    out.write(jpegData, 0, jpegData.length);
                    out.close();
                } catch (Exception e) {
                }
            }
            if (!mRefocus || (mRefocus && mReceivedSnapNum == 7)) {
                int orientation = Exif.getOrientation(exif);
                if (!mIsImageCaptureIntent) {
                    // Burst snapshot. Generate new image name.
                    if (mReceivedSnapNum > 1) {
                        mNamedImages.nameNewImage(mCaptureStartTime, mRefocus);
                    }
                    // Calculate the width and the height of the jpeg.
                    Size s = mParameters.getPictureSize();
                    int width, height;
                    if ((mJpegRotation + orientation) % 180 == 0) {
                        width = s.width;
                        height = s.height;
                    } else {
                        width = s.height;
                        height = s.width;
                    }
                    String pictureFormat = mParameters.get(KEY_PICTURE_FORMAT);
                    if (pictureFormat != null && !pictureFormat.equalsIgnoreCase(PIXEL_FORMAT_JPEG)) {
                        // overwrite width and height if raw picture
                        String pair = mParameters.get(KEY_QC_RAW_PICUTRE_SIZE);
                        if (pair != null) {
                            int pos = pair.indexOf('x');
                            if (pos != -1) {
                                width = Integer.parseInt(pair.substring(0, pos));
                                height = Integer.parseInt(pair.substring(pos + 1));
                            }
                        }
                    }
                    NamedEntity name = mNamedImages.getNextNameEntity();
                    String title = (name == null) ? null : name.title;
                    long date = (name == null) ? -1 : name.date;
                    // Handle debug mode outputs
                    if (mDebugUri != null) {
                        // If using a debug uri, save jpeg there.
                        saveToDebugUri(jpegData);
                        // Adjust the title of the debug image shown in mediastore.
                        if (title != null) {
                            title = DEBUG_IMAGE_PREFIX + title;
                        }
                     }
                     if (title == null) {
                         Log.e(TAG, "Unbalanced name/data pair");
                     } else {
                        if (date == -1) {
                            date = mCaptureStartTime;
                        }
                        if (mHeading >= 0) {
                            // heading direction has been updated by the sensor.
                            ExifTag directionRefTag = exif.buildTag(
                              ExifInterface.TAG_GPS_IMG_DIRECTION_REF,
                              ExifInterface.GpsTrackRef.MAGNETIC_DIRECTION);
                            ExifTag directionTag = exif.buildTag(
                              ExifInterface.TAG_GPS_IMG_DIRECTION,
                              new Rational(mHeading, 1));
                            exif.setTag(directionRefTag);
                            exif.setTag(directionTag);
                        }
                        String mPictureFormat = mParameters.get(KEY_PICTURE_FORMAT);
                            mActivity.getMediaSaveService().addImage(
                                    jpegData, title, date, mLocation, width, height,
                                    orientation, exif, mOnMediaSavedListener,
                                    mContentResolver, mPictureFormat);
                            if (mRefocus && mReceivedSnapNum == 7) {
                                 mUI.showRefocusToast(mRefocus);
                            }
                        }
                        // Animate capture with real jpeg data instead of a preview frame.
                        if ((mCameraState != LONGSHOT) ||
                            isLongshotDone()) {
                            Size pic_size = mParameters.getPictureSize();
                            if ((pic_size.width <= 352) && (pic_size.height<= 288)) {
                                mUI.setDownFactor(2); //Downsample by 2 for CIF & below
                            } else {
                                mUI.setDownFactor(4);
                            }
                            if (mAnimateCapture) {
                                mUI.animateCapture(jpegData, orientation, mMirror);
                            }
                        } else {
                            // In long shot mode, we do not want to update the preview thumbnail
                            // for each snapshot, instead, keep the last jpeg data and orientation,
                            // use it to show the final one at the end of long shot.
                            mLastJpegData = jpegData;
                            mLastJpegOrientation = orientation;
                        }

                    } else {
                        stopPreview();
                        mJpegImageData = jpegData;
                        if (!mQuickCapture) {
                            mUI.showCapturedImageForReview(jpegData, orientation, mMirror);
                        } else {
                            onCaptureDone();
                        }
                    }
                    if(!mLongshotActive)
                        mActivity.updateStorageSpaceAndHint();
                    mUI.updateRemainingPhotos(--mRemainingPhotos);
                    long now = System.currentTimeMillis();
                    mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
                    Log.v(TAG, "mJpegCallbackFinishTime = "
                            + mJpegCallbackFinishTime + "ms");

                    if (mReceivedSnapNum == mBurstSnapNum) {
                        mJpegPictureCallbackTime = 0;
                    }

                    if (isLongshotDone()) {
                        mLongshotSnapNum = 0;
                    }

                    if (mHistogramEnabled && (mSnapshotMode ==CameraInfo.CAMERA_SUPPORT_MODE_ZSL)) {
                        mActivity.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                mUI.setHistogramEnabled(true, getCamera());
                            }
                        });
                    }
                if (mSnapshotMode == CameraInfo.CAMERA_SUPPORT_MODE_ZSL &&
                        mCameraState != LONGSHOT &&
                        mReceivedSnapNum == mBurstSnapNum &&
                        !mIsImageCaptureIntent) {
                    cancelAutoFocus();
                }
            }
        }
    }

    private final class AutoFocusCallback implements CameraAFCallback {
        @Override
        public void onAutoFocus(
                boolean focused, CameraProxy camera) {
            if (mPaused) return;

            mAutoFocusTime = System.currentTimeMillis() - mFocusStartTime;
            Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
            //don't reset the camera state while capture is in progress
            //otherwise, it might result in another takepicture
            switch (mCameraState) {
                case PhotoController.LONGSHOT:
                case SNAPSHOT_IN_PROGRESS:
                    break;
                default:
                    setCameraState(IDLE);
                    break;
            }
            mCameraDevice.refreshParameters();
            mFocusManager.setParameters(mCameraDevice.getParameters());
            mFocusManager.onAutoFocus(focused, mUI.isShutterPressed());
        }
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private final class AutoFocusMoveCallback
            implements CameraAFMoveCallback {
        @Override
        public void onAutoFocusMoving(
                boolean moving, CameraProxy camera) {
            mCameraDevice.refreshParameters();
            mFocusManager.setParameters(mCameraDevice.getParameters());
            mFocusManager.onAutoFocusMoving(moving);
        }
    }

    /**
     * This class is just a thread-safe queue for name,date holder objects.
     */
    public static class NamedImages {
        private Vector<NamedEntity> mQueue;

        public NamedImages() {
            mQueue = new Vector<NamedEntity>();
        }

        public void nameNewImage(long date) {
            NamedEntity r = new NamedEntity();
            r.title = CameraUtil.createJpegName(date);
            r.date = date;
            mQueue.add(r);
        }

        public void nameNewImage(long date, boolean refocus) {
            NamedEntity r = new NamedEntity();
            r.title = CameraUtil.createJpegName(date, refocus);
            r.date = date;
            mQueue.add(r);
        }

        public NamedEntity getNextNameEntity() {
            synchronized(mQueue) {
                if (!mQueue.isEmpty()) {
                    return mQueue.remove(0);
                }
            }
            return null;
        }

        public static class NamedEntity {
            public String title;
            public long date;
        }
    }

    private void setCameraState(int state) {
        mCameraState = state;
        /*
         * If the current thread is UI thread, update gestures UI directly.
         * If the current thread is background thread, post a handler message
         * to update gestures UI.
         */
        if (Looper.getMainLooper().getThread() == Thread.currentThread()) {
            updateGesturesUI();
        } else {
            mHandler.sendEmptyMessage(UPDATE_GESTURES_UI);
        }
    }

    private void updateGesturesUI(){
        switch (mCameraState) {
            case PhotoController.PREVIEW_STOPPED:
            case PhotoController.SNAPSHOT_IN_PROGRESS:
            case PhotoController.LONGSHOT:
            case PhotoController.SWITCHING_CAMERA:
                mUI.enableGestures(false);
                break;
            case PhotoController.IDLE:
                mUI.enableGestures(true);
                break;
        }
    }

    private void animateAfterShutter() {
        // Only animate when in full screen capture mode
        // i.e. If monkey/a user swipes to the gallery during picture taking,
        // don't show animation
        if (!mIsImageCaptureIntent) {
            mUI.animateFlash();
        }
    }

    @Override
    public boolean capture() {
        // If we are already in the middle of taking a snapshot or the image save request
        // is full then ignore.
        if (mCameraDevice == null || mCameraState == SNAPSHOT_IN_PROGRESS
                || mCameraState == SWITCHING_CAMERA
                || mActivity.getMediaSaveService() == null
                || mActivity.getMediaSaveService().isQueueFull()) {
            return false;
        }
        mCaptureStartTime = System.currentTimeMillis();
        mPostViewPictureCallbackTime = 0;
        mJpegImageData = null;

        final boolean animateBefore = (mSceneMode == CameraUtil.SCENE_MODE_HDR);
        if(mHistogramEnabled) {
            if (mSnapshotMode != CameraInfo.CAMERA_SUPPORT_MODE_ZSL) {
                mHistogramEnabled = false;
                mCameraDevice.setHistogramMode(null);
            }
            mActivity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    mUI.setHistogramEnabled(false, null);
                }
            });
        }

        if (animateBefore) {
            animateAfterShutter();
        }

        if (mCameraState == LONGSHOT) {
            mLongshotSnapNum = 0;
            mCameraDevice.setLongshot(true);
        }

        // Set rotation and gps data.
        int orientation = mOrientation;
        mJpegRotation = CameraUtil.getJpegRotation(mCameraId, orientation);
        String pictureFormat = mParameters.get(KEY_PICTURE_FORMAT);
        Location loc = getLocationAccordPictureFormat(pictureFormat);

        synchronized (mCameraDevice) {
            mParameters.setRotation(mJpegRotation);
            CameraUtil.setGpsParameters(mParameters, loc);

            if (mRefocus) {
                mParameters.set(CameraSettings.KEY_QC_LEGACY_BURST,
                        CameraSettings.KEY_QC_RE_FOCUS_COUNT);
            } else {
                mParameters.remove(CameraSettings.KEY_QC_LEGACY_BURST);
            }

            // Unlock AE&AWB, if they continue
            // to be locked during snapshot, then
            // side effects could be triggered w.r.t.
            // flash.
            mFocusManager.setAeAwbLock(false);
            setAutoExposureLockIfSupported();
            setAutoWhiteBalanceLockIfSupported();

            mCameraDevice.setParameters(mParameters);
            mParameters = mCameraDevice.getParameters();
        }

         // LGE G4: Disable hdr if luminance is low and flash get's used
        if (CameraUtil.isLowLuminance(mParameters)) {
            mParameters.set(CameraSettings.KEY_SNAPCAM_HDR_MODE, CameraSettings.LGE_HDR_MODE_OFF);
            mCameraDevice.setParameters(mParameters);
            mParameters = mCameraDevice.getParameters();
        }

        mBurstSnapNum = CameraUtil.getNumSnapsPerShutter(mParameters);
        mReceivedSnapNum = 0;
        mPreviewRestartSupport = SystemProperties.getBoolean(
                PERSIST_PREVIEW_RESTART, false);
        mPreviewRestartSupport &= CameraSettings.isInternalPreviewSupported(
                mParameters);
        mPreviewRestartSupport &= (mBurstSnapNum == 1);
        mPreviewRestartSupport &= PIXEL_FORMAT_JPEG.equalsIgnoreCase(
                pictureFormat);

        // We don't want user to press the button again while taking a
        // multi-second HDR photo. For longshot, no need to disable.
        if (mCameraState != LONGSHOT) {
            mUI.enableShutter(false);
        }

        if (mCameraState == LONGSHOT) {
            if(mLongshotSave) {
                mCameraDevice.takePicture(mHandler,
                        new LongshotShutterCallback(),
                        mRawPictureCallback, mPostViewPictureCallback,
                        new LongshotPictureCallback(loc));
            } else {
                mCameraDevice.takePicture(mHandler,
                        new LongshotShutterCallback(),
                        mRawPictureCallback, mPostViewPictureCallback,
                        new JpegPictureCallback(loc));
            }
        } else {
            mCameraDevice.enableShutterSound(!mRefocus);
            mCameraDevice.takePicture(mHandler,
                    new ShutterCallback(!animateBefore),
                    mRawPictureCallback, mPostViewPictureCallback,
                    new JpegPictureCallback(loc));
            setCameraState(SNAPSHOT_IN_PROGRESS);

            // LGE G4: Preview needs to be restarted when flash got used
            if (CameraUtil.isSupported(mParameters, CameraSettings.KEY_LUMINANCE_CONITION)) {
                String flashMode = mPreferences.getString(
                                    CameraSettings.KEY_FLASH_MODE,
                                    mActivity.getString(R.string.pref_camera_flashmode_default));
                if (flashMode.equals(Parameters.FLASH_MODE_ON) || 
                        (!flashMode.equals(Parameters.FLASH_MODE_OFF) &&
                        CameraUtil.isLowLuminance(mParameters))) {
                    setupPreview();
                }
            }
        }

        mNamedImages.nameNewImage(mCaptureStartTime, mRefocus);

        if (mSnapshotMode != CameraInfo.CAMERA_SUPPORT_MODE_ZSL) {
            mFaceDetectionStarted = false;
        }
        UsageStatistics.onEvent(UsageStatistics.COMPONENT_CAMERA,
                UsageStatistics.ACTION_CAPTURE_DONE, "Photo", 0,
                UsageStatistics.hashFileName(mNamedImages.mQueue.lastElement().title + ".jpg"));
        return true;
    }

    @Override
    public void setFocusParameters() {
        setCameraParameters(UPDATE_PARAM_PREFERENCE);
    }

    private Location getLocationAccordPictureFormat(String pictureFormat) {
        if (pictureFormat != null &&
                PIXEL_FORMAT_JPEG.equalsIgnoreCase(pictureFormat)) {
            return mLocationManager.getCurrentLocation();
        }
        return null;
    }

    private int getPreferredCameraId(ComboPreferences preferences) {
        int intentCameraId = CameraUtil.getCameraFacingIntentExtras(mActivity);
        if (intentCameraId != -1) {
            // Testing purpose. Launch a specific camera through the intent
            // extras.
            return intentCameraId;
        } else {
            return CameraSettings.readPreferredCameraId(preferences);
        }
    }

    private void updateLongshotScene() {
        String[] longshotScenes = mActivity.getResources().getStringArray(
                R.array.longshot_scenemodes);
        if (longshotScenes.length == 0) {
            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT, null);
            return;
        }
        boolean useLongshot = false;
        for (String scene : longshotScenes) {
            if (scene.equals(mSceneMode)) {
                useLongshot = true;
                break;
            }
        }
        mUI.overrideSettings(CameraSettings.KEY_LONGSHOT,
                useLongshot ? mActivity.getString(R.string.setting_on_value) :
                              mActivity.getString(R.string.setting_off_value));
    }

    private void updateCommonManual3ASettings() {
        mSceneMode = Parameters.SCENE_MODE_AUTO;
        String flashMode = Parameters.FLASH_MODE_OFF;
        String redeyeReduction = mActivity.getString(R.string.
                pref_camera_redeyereduction_default);
        String aeBracketing = mActivity.getString(R.string.
                pref_camera_ae_bracket_hdr_default);
        String colorEffect = mActivity.getString(R.string.
                pref_camera_coloreffect_default);
        String exposureCompensation = CameraSettings.EXPOSURE_DEFAULT_VALUE;

        if (mManual3AEnabled > 0) {
            overrideCameraSettings(flashMode, null, null,
                                   exposureCompensation,
                                   mParameters.getAutoExposure(),
                                   getSaturationSafe(),
                                   getContrastSafe(),
                                   getSharpnessSafe(),
                                   colorEffect,
                                   mSceneMode, redeyeReduction, aeBracketing);
            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT,
                        mActivity.getString(R.string.setting_off_value));
        } else {
            //enable all
            overrideCameraSettings(null, null, null,
                                   null, null,
                                   null, null, null, null,
                                   null, null, null);
            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT, null);
        }

        String isoMode = CameraSettings.getISOValue(mParameters);
        final String isoManual = CameraSettings.KEY_MANUAL_ISO;
        if (isoMode.equals(isoManual)) {
            final String isoPref = mPreferences.getString(
                    CameraSettings.KEY_ISO,
                    mActivity.getString(R.string.pref_camera_iso_default));
            mUI.overrideSettings(CameraSettings.KEY_ISO, isoPref);
        }
        if ((mManual3AEnabled & MANUAL_WB) != 0) {
            String whiteBalance = mPreferences.getString(
                    CameraSettings.KEY_WHITE_BALANCE,
                    mActivity.getString(R.string.pref_camera_whitebalance_default));
            mUI.overrideSettings(CameraSettings.KEY_WHITE_BALANCE, whiteBalance);
        }
        if ((mManual3AEnabled & MANUAL_FOCUS) != 0) {
            mUI.overrideSettings(CameraSettings.KEY_FOCUS_MODE,
                    mFocusManager.getFocusMode(false));
        }
    }

    private void updateCameraSettings() {
        String sceneMode = null;
        String flashMode = null;
        String redeyeReduction = null;
        String aeBracketing = null;
        String focusMode = null;
        String colorEffect = null;
        String exposureCompensation = null;
        boolean disableLongShot = false;

        String ubiFocusOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_ubifocus_on);
        String continuousShotOn =
                mActivity.getString(R.string.setting_on_value);
        String reFocusOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_refocus_on);
        String chromaFlashOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_chromaflash_on);
        String optiZoomOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_optizoom_on);
        String fssrOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_FSSR_on);
        String truPortraitOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_trueportrait_on);
        String multiTouchFocusOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_multi_touch_focus_on);
        String optiZoom =
            mParameters.get(CameraSettings.KEY_QC_OPTI_ZOOM);
        String chromaFlash =
            mParameters.get(CameraSettings.KEY_QC_CHROMA_FLASH);
        String ubiFocus =
            mParameters.get(CameraSettings.KEY_QC_AF_BRACKETING);
        String fssr =
            mParameters.get(CameraSettings.KEY_QC_FSSR);
        String truePortrait =
            mParameters.get(CameraSettings.KEY_QC_TP);
        String multiTouchFocus =
            mParameters.get(CameraSettings.KEY_QC_MULTI_TOUCH_FOCUS);
        String stillMoreOn = mActivity.getString(R.string.
            pref_camera_advanced_feature_value_stillmore_on);
        String stillMore =
            mParameters.get(CameraSettings.KEY_QC_STILL_MORE);
        String continuousShot =
                mParameters.get("long-shot");

        if (mManual3AEnabled > 0) {
            disableLongShot = true;
        }

        if ((continuousShot != null) && continuousShot.equals(continuousShotOn)) {
            mUI.overrideSettings(CameraSettings.KEY_PICTURE_FORMAT, PIXEL_FORMAT_JPEG);
        } else {
            mUI.overrideSettings(CameraSettings.KEY_PICTURE_FORMAT, null);
        }
        String reFocus =
            mParameters.get(CameraSettings.KEY_QC_RE_FOCUS);

        if (mFocusManager.isZslEnabled()) {
            mUI.overrideSettings(CameraSettings.KEY_PICTURE_FORMAT, PIXEL_FORMAT_JPEG);
        } else {
            mUI.overrideSettings(CameraSettings.KEY_PICTURE_FORMAT, null);
        }
        if ((multiTouchFocus != null && multiTouchFocus.equals(multiTouchFocusOn)) ||
                (chromaFlash != null && chromaFlash.equals(chromaFlashOn)) ||
                (optiZoom != null && optiZoom.equals(optiZoomOn)) ||
                (fssr != null && fssr.equals(fssrOn)) ||
                (truePortrait != null && truePortrait.equals(truPortraitOn)) ||
                (stillMore != null && stillMore.equals(stillMoreOn))) {
            if ((optiZoom != null && optiZoom.equals(optiZoomOn)) ||
                    (CameraSettings.hasChromaFlashScene(mActivity) &&
                     chromaFlash != null && chromaFlash.equals(chromaFlashOn))) {
                sceneMode = null;
            } else {
                mSceneMode = sceneMode = Parameters.SCENE_MODE_AUTO;
            }
            flashMode = Parameters.FLASH_MODE_OFF;
            focusMode = Parameters.FOCUS_MODE_INFINITY;
            redeyeReduction = mActivity.getString(R.string.
                pref_camera_redeyereduction_entry_disable);
            aeBracketing = mActivity.getString(R.string.
                pref_camera_ae_bracket_hdr_entry_off);
            colorEffect = mActivity.getString(R.string.
                pref_camera_coloreffect_default);
            exposureCompensation = CameraSettings.EXPOSURE_DEFAULT_VALUE;

            overrideCameraSettings(null, null, focusMode,
                                   exposureCompensation, null,
                                   null, null, null, colorEffect,
                                   sceneMode, redeyeReduction, aeBracketing);
            disableLongShot = true;
        }

        // If scene mode is set, for white balance and focus mode
        // read settings from preferences so we retain user preferences.
        if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode) &&
                !"asd".equals(mSceneMode) &&
                !"sports".equals(mSceneMode)) {
            flashMode = mParameters.FLASH_MODE_OFF;
            String whiteBalance = Parameters.WHITE_BALANCE_AUTO;
            focusMode = mFocusManager.getFocusMode(false);
            colorEffect = mParameters.getColorEffect();
            String defaultEffect = mActivity.getString(R.string.pref_camera_coloreffect_default);
            if (CameraUtil.SCENE_MODE_HDR.equals(mSceneMode)) {
                disableLongShot = true;
                if (colorEffect != null & !colorEffect.equals(defaultEffect)) {
                    // Change the colorEffect to default(None effect) when HDR ON.
                    colorEffect = defaultEffect;
                    mUI.setPreference(CameraSettings.KEY_COLOR_EFFECT, colorEffect);
                    mParameters.setColorEffect(colorEffect);
                    mCameraDevice.setParameters(mParameters);
                    mParameters = mCameraDevice.getParameters();
                }
            }
            exposureCompensation =
                Integer.toString(mParameters.getExposureCompensation());

            overrideCameraSettings(null, whiteBalance, focusMode,
                    exposureCompensation,
                    mParameters.getAutoExposure(),
                    getSaturationSafe(),
                    getContrastSafe(),
                    getSharpnessSafe(),
                    colorEffect,
                    sceneMode, redeyeReduction, aeBracketing);
        } else if (mFocusManager.isZslEnabled()) {
            focusMode = mParameters.getFocusMode();
            overrideCameraSettings(null, null, focusMode,
                                   exposureCompensation, null,
                                   null, null, null, colorEffect,
                                   sceneMode, redeyeReduction, aeBracketing);
        } else {
            if (mManual3AEnabled > 0) {
                updateCommonManual3ASettings();
            } else {
                overrideCameraSettings(null, null, focusMode,
                                       exposureCompensation, null,
                                       null, null, null, colorEffect,
                                       sceneMode, redeyeReduction, aeBracketing);
            }
        }
        /* Disable focus if aebracket is ON */
        String aeBracket = mParameters.get(CameraSettings.KEY_QC_AE_BRACKETING);
        if (aeBracket != null && !aeBracket.equalsIgnoreCase("off")) {
            flashMode = Parameters.FLASH_MODE_OFF;
            mParameters.setFlashMode(flashMode);
        }

        if (chromaFlash != null && chromaFlash.equals(chromaFlashOn)) {
            flashMode = Parameters.FLASH_MODE_ON;
            mParameters.setFlashMode(flashMode);
        }

        if (disableLongShot) {
            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT,
                    mActivity.getString(R.string.setting_off_value));
        } else {
            updateLongshotScene();
        }

        if (flashMode == null) {
            // Restore saved flash mode or default mode
            if (mSavedFlashMode == null) {
                mSavedFlashMode =  mPreferences.getString(
                    CameraSettings.KEY_FLASH_MODE,
                    mActivity.getString(R.string.pref_camera_flashmode_default));
            }
            mUI.setPreference(CameraSettings.KEY_FLASH_MODE, mSavedFlashMode);
            mSavedFlashMode = null;
        } else {
            // Save the current flash mode
            if (mSavedFlashMode == null) {
                mSavedFlashMode =  mPreferences.getString(
                    CameraSettings.KEY_FLASH_MODE,
                    mActivity.getString(R.string.pref_camera_flashmode_default));
            }
            mUI.overrideSettings(CameraSettings.KEY_FLASH_MODE, flashMode);
        }

        if(mCameraId != CameraHolder.instance().getFrontCameraId())
            CameraSettings.removePreferenceFromScreen(mPreferenceGroup, CameraSettings.KEY_SELFIE_FLASH);
    }

    private void overrideCameraSettings(final String flashMode,
            final String whiteBalance, final String focusMode,
            final String exposureMode, final String autoExposure,
            final String saturation, final String contrast,
            final String sharpness, final String coloreffect,
            final String sceneMode, final String redeyeReduction,
            final String aeBracketing) {
        mUI.overrideSettings(
                CameraSettings.KEY_FLASH_MODE, flashMode,
                CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
                CameraSettings.KEY_FOCUS_MODE, focusMode,
                CameraSettings.KEY_EXPOSURE, exposureMode,
                CameraSettings.KEY_AUTOEXPOSURE, autoExposure,
                CameraSettings.KEY_SATURATION, saturation,
                CameraSettings.KEY_CONTRAST, contrast,
                CameraSettings.KEY_SHARPNESS, sharpness,
                CameraSettings.KEY_COLOR_EFFECT, coloreffect,
                CameraSettings.KEY_SCENE_MODE, sceneMode,
                CameraSettings.KEY_REDEYE_REDUCTION, redeyeReduction,
                CameraSettings.KEY_AE_BRACKET_HDR, aeBracketing);
    }

    private void loadCameraPreferences() {
        CameraSettings settings = new CameraSettings(mActivity, mInitialParams,
                mCameraId, CameraHolder.instance().getCameraInfo());
        mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences);

        int numOfCams = Camera.getNumberOfCameras();
        int backCamId = CameraHolder.instance().getBackCameraId();
        int frontCamId = CameraHolder.instance().getFrontCameraId();
        // We need to swap the list preference contents if back camera and front camera
        // IDs are not 0 and 1 respectively
        if ((numOfCams == 2) && ((backCamId != CameraInfo.CAMERA_FACING_BACK)
                || (frontCamId != CameraInfo.CAMERA_FACING_FRONT))) {
            Log.e(TAG,"loadCameraPreferences() updating camera_id pref");

            IconListPreference switchIconPref =
                    (IconListPreference)mPreferenceGroup.findPreference(
                    CameraSettings.KEY_CAMERA_ID);

            int[] iconIds = {R.drawable.ic_switch_front, R.drawable.ic_switch_back};
            switchIconPref.setIconIds(iconIds);

            String[] entries = {mActivity.getResources().getString(
                    R.string.pref_camera_id_entry_front), mActivity.getResources().
                    getString(R.string.pref_camera_id_entry_back)};
            switchIconPref.setEntries(entries);

            String[] labels = {mActivity.getResources().getString(
                    R.string.pref_camera_id_label_front), mActivity.getResources().
                    getString(R.string.pref_camera_id_label_back)};
            switchIconPref.setLabels(labels);

            int[] largeIconIds = {R.drawable.ic_switch_front, R.drawable.ic_switch_back};
            switchIconPref.setLargeIconIds(largeIconIds);
        }
    }

    @Override
    public void onOrientationChanged(int orientation) {
        // We keep the last known orientation. So if the user first orient
        // the camera then point the camera to floor or sky, we still have
        // the correct orientation.
        if (orientation == OrientationEventListener.ORIENTATION_UNKNOWN) return;
        int oldOrientation = mOrientation;
        mOrientation = CameraUtil.roundOrientation(orientation, mOrientation);
        if (oldOrientation != mOrientation) {
            if (mParameters != null && mCameraDevice != null && mCameraState == IDLE) {
                Log.v(TAG, "onOrientationChanged, update parameters");
                setFlipValue();
                mCameraDevice.setParameters(mParameters);
            }
            mUI.tryToCloseSubList();
            mUI.setOrientation(mOrientation, true);
        }

        // Show the toast after getting the first orientation changed.
        if (mHandler.hasMessages(SHOW_TAP_TO_FOCUS_TOAST)) {
            mHandler.removeMessages(SHOW_TAP_TO_FOCUS_TOAST);
            showTapToFocusToast();
        }
    }

    @Override
    public void onStop() {}

    @Override
    public void onCaptureCancelled() {
        mActivity.setResultEx(Activity.RESULT_CANCELED, new Intent());
        mActivity.finish();
    }

    @Override
    public void onCaptureRetake() {
        if (mPaused)
            return;
        mUI.hidePostCaptureAlert();
        setupPreview();
    }

    @Override
    public void onCaptureDone() {
        if (mPaused) {
            return;
        }

        byte[] data = mJpegImageData;

        if (mCropValue == null) {
            // First handle the no crop case -- just return the value.  If the
            // caller specifies a "save uri" then write the data to its
            // stream. Otherwise, pass back a scaled down version of the bitmap
            // directly in the extras.
            if (mSaveUri != null) {
                OutputStream outputStream = null;
                try {
                    outputStream = mContentResolver.openOutputStream(mSaveUri);
                    outputStream.write(data);
                    outputStream.close();

                    mActivity.setResultEx(Activity.RESULT_OK);
                    mActivity.finish();
                } catch (IOException ex) {
                    // ignore exception
                } finally {
                    CameraUtil.closeSilently(outputStream);
                }
            } else {
                ExifInterface exif = Exif.getExif(data);
                int orientation = Exif.getOrientation(exif);
                Bitmap bitmap = CameraUtil.makeBitmap(data, 50 * 1024);
                bitmap = CameraUtil.rotate(bitmap, orientation);
                mActivity.setResultEx(Activity.RESULT_OK,
                        new Intent("inline-data").putExtra("data", bitmap));
                mActivity.finish();
            }
        } else {
            // Save the image to a temp file and invoke the cropper
            Uri tempUri = null;
            FileOutputStream tempStream = null;
            try {
                File path = mActivity.getFileStreamPath(sTempCropFilename);
                path.delete();
                tempStream = mActivity.openFileOutput(sTempCropFilename, 0);
                tempStream.write(data);
                tempStream.close();
                tempUri = Uri.fromFile(path);
            } catch (FileNotFoundException ex) {
                mActivity.setResultEx(Activity.RESULT_CANCELED);
                mActivity.finish();
                return;
            } catch (IOException ex) {
                mActivity.setResultEx(Activity.RESULT_CANCELED);
                mActivity.finish();
                return;
            } finally {
                CameraUtil.closeSilently(tempStream);
            }

            Bundle newExtras = new Bundle();
            if (mCropValue.equals("circle")) {
                newExtras.putString("circleCrop", "true");
            }
            if (mSaveUri != null) {
                newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
            } else {
                newExtras.putBoolean(CameraUtil.KEY_RETURN_DATA, true);
            }
            if (mActivity.isSecureCamera()) {
                newExtras.putBoolean(CameraUtil.KEY_SHOW_WHEN_LOCKED, true);
            }

            // TODO: Share this constant.
            final String CROP_ACTION = "com.android.camera.action.CROP";
            Intent cropIntent = new Intent(CROP_ACTION);

            cropIntent.setData(tempUri);
            cropIntent.putExtras(newExtras);

            mActivity.startActivityForResult(cropIntent, REQUEST_CROP);
        }
    }

    @Override
    public void onShutterButtonFocus(boolean pressed) {
        if (mCameraDevice == null
                || mPaused || mUI.collapseCameraControls()
                || (mCameraState == SNAPSHOT_IN_PROGRESS)
                || (mCameraState == PREVIEW_STOPPED)
                || (null == mFocusManager)) {
            Log.v(TAG, "onShutterButtonFocus error case mCameraState = " + mCameraState
                + "mCameraDevice = " + mCameraDevice + "mPaused =" + mPaused);
            return;
        }

        synchronized(mCameraDevice) {
           if (mCameraState == LONGSHOT) {
               mLongshotActive = false;
               mUI.enableShutter(false);
           }
        }

        // Do not do focus if there is not enough storage.
        if (pressed && !canTakePicture()) return;

        if (pressed) {
            mFocusManager.onShutterDown();
        } else {
            // for countdown mode, we need to postpone the shutter release
            // i.e. lock the focus during countdown.
            if (!mUI.isCountingDown()) {
                mFocusManager.onShutterUp();
            }
        }
    }

    @Override
    public synchronized void onShutterButtonClick() {
        if ((mCameraDevice == null)
                || mPaused || mShutterPressing
                || mUI.collapseCameraControls()
                || (mCameraState == SWITCHING_CAMERA)
                || (mCameraState == PREVIEW_STOPPED)
                || (null == mFocusManager)
                || (null == mUI.getSurfaceHolder())) return;

        mShutterPressing = true;

        // Do not take the picture if there is not enough storage.
        if (mActivity.getStorageSpaceBytes() <= Storage.LOW_STORAGE_THRESHOLD_BYTES) {
            Log.i(TAG, "Not enough space or storage not ready. remaining="
                    + mActivity.getStorageSpaceBytes());
            mShutterPressing = false;
            return;
        }
        Log.v(TAG, "onShutterButtonClick: mCameraState=" + mCameraState);

        if (mSceneMode == CameraUtil.SCENE_MODE_HDR) {
            mUI.hideSwitcher();
            mUI.setSwipingEnabled(false);
        }

         //Need to disable focus for ZSL mode
        if (mFocusManager != null) {
            if (mSnapshotMode == CameraInfo.CAMERA_SUPPORT_MODE_ZSL) {
                mFocusManager.setZslEnable(true);
            } else {
                mFocusManager.setZslEnable(false);
            }
        }

        // If the user wants to do a snapshot while the previous one is still
        // in progress, remember the fact and do it after we finish the previous
        // one and re-start the preview. Snapshot in progress also includes the
        // state that autofocus is focusing and a picture will be taken when
        // focus callback arrives.
        if ((((mFocusManager != null) && mFocusManager.isFocusingSnapOnFinish())
                || mCameraState == SNAPSHOT_IN_PROGRESS)
                && !mIsImageCaptureIntent) {
            mSnapshotOnIdle = true;
            mShutterPressing = false;
            return;
        }

        String timer = mPreferences.getString(
                CameraSettings.KEY_TIMER,
                mActivity.getString(R.string.pref_camera_timer_default));
        boolean playSound = mPreferences.getString(CameraSettings.KEY_TIMER_SOUND_EFFECTS,
                mActivity.getString(R.string.pref_camera_timer_sound_default))
                .equals(mActivity.getString(R.string.setting_on_value));

        int seconds = Integer.parseInt(timer);
        // When shutter button is pressed, check whether the previous countdown is
        // finished. If not, cancel the previous countdown and start a new one.
        if (mUI.isCountingDown()) {
            mUI.cancelCountDown();
        }
        if (seconds > 0) {
            String zsl = mPreferences.getString(CameraSettings.KEY_ZSL,
                    mActivity.getString(R.string.pref_camera_zsl_default));
            mUI.overrideSettings(CameraSettings.KEY_ZSL, zsl);
            mUI.startCountDown(seconds, playSound);

        } else {
            mSnapshotOnIdle = false;
            initiateSnap();
        }
    }

    private void initiateSnap()
    {
        if(mPreferences.getString(CameraSettings.KEY_SELFIE_FLASH,
                mActivity.getString(R.string.pref_selfie_flash_default))
                .equalsIgnoreCase("on") &&
                mCameraId == CameraHolder.instance().getFrontCameraId()) {
            mUI.startSelfieFlash();
            if(selfieThread == null) {
                selfieThread = new SelfieThread();
                selfieThread.start();
            }
        } else {
            mFocusManager.doSnap();
        }
        mShutterPressing = false;
    }

    @Override
    public void onShutterButtonLongClick() {
        // Do not take the picture if there is not enough storage.
        if (mActivity.getStorageSpaceBytes() <= Storage.LOW_STORAGE_THRESHOLD_BYTES) {
            Log.i(TAG, "Not enough space or storage not ready. remaining="
                    + mActivity.getStorageSpaceBytes());
            return;
        }

        if ((null != mCameraDevice) && ((mCameraState == IDLE) || (mCameraState == FOCUSING))) {
            //Add on/off Menu for longshot
            String longshot_enable = mPreferences.getString(
                CameraSettings.KEY_LONGSHOT,
                mActivity.getString(R.string.pref_camera_longshot_default));

            Log.d(TAG, "longshot_enable = " + longshot_enable);
            if (longshot_enable.equals("on")) {
                boolean enable = SystemProperties.getBoolean(PERSIST_LONG_SAVE, false);
                mLongshotSave = enable;

                //Cancel the previous countdown when long press shutter button for longshot.
                if (mUI.isCountingDown()) {
                    mUI.cancelCountDown();
                }
                //check whether current memory is enough for longshot.
                if(isLongshotNeedCancel()) {
                    return;
                }
                mLongshotActive = true;
                setCameraState(PhotoController.LONGSHOT);
                mFocusManager.doSnap();
            }
        }
    }

    @Override
    public void installIntentFilter() {
        // Do nothing.
    }

    @Override
    public boolean updateStorageHintOnResume() {
        return mFirstTimeInitialized;
    }

    @Override
    public void onResumeBeforeSuper() {
        mPaused = false;
        mPreferences = new ComboPreferences(mActivity);
        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal(), mActivity);
        mCameraId = getPreferredCameraId(mPreferences);
        mPreferences.setLocalId(mActivity, mCameraId);
        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
    }

    private void openCamera() {
        // We need to check whether the activity is paused before long
        // operations to ensure that onPause() can be done ASAP.
        if (mPaused) {
            return;
        }
        Log.v(TAG, "Open camera device.");
        mCameraDevice = CameraUtil.openCamera(
                mActivity, mCameraId, mHandler,
                mActivity.getCameraOpenErrorCallback());
        if (mCameraDevice == null) {
            Log.e(TAG, "Failed to open camera:" + mCameraId);
            mHandler.sendEmptyMessage(OPEN_CAMERA_FAIL);
            return;
        }
        mParameters = mCameraDevice.getParameters();
        mCameraPreviewParamsReady = true;
        mInitialParams = mParameters;
        if (mFocusManager == null) {
            initializeFocusManager();
        } else {
            mFocusManager.setParameters(mInitialParams);
        }
        initializeCapabilities();
        mHandler.sendEmptyMessageDelayed(CAMERA_OPEN_DONE,100);
        return;
    }

    @Override
    public void onResumeAfterSuper() {
        mLastPhotoTakenWithRefocus = false;
        mUI.showSurfaceView();
        // Add delay on resume from lock screen only, in order to to speed up
        // the onResume --> onPause --> onResume cycle from lock screen.
        // Don't do always because letting go of thread can cause delay.
        String action = mActivity.getIntent().getAction();
        if (MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA.equals(action)
                || MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE.equals(action)) {
            Log.v(TAG, "On resume, from lock screen.");
            // Note: onPauseAfterSuper() will delete this runnable, so we will
            // at most have 1 copy queued up.
            mHandler.postDelayed(new Runnable() {
                public void run() {
                    onResumeTasks();
                }
            }, ON_RESUME_TASKS_DELAY_MSEC);
        } else {
            Log.v(TAG, "On resume.");
            onResumeTasks();
        }
        mUI.setSwitcherIndex();
        mHandler.post(new Runnable(){
            @Override
            public void run(){
                mActivity.updateStorageSpaceAndHint();
                updateRemainingPhotos();
            }
        });
    }

    private void updateRemainingPhotos() {
        if (mJpegFileSizeEstimation != 0) {
            mRemainingPhotos = (int)
                    ((mActivity.getStorageSpaceBytes() - Storage.LOW_STORAGE_THRESHOLD_BYTES)
                    / mJpegFileSizeEstimation);
        } else {
            mRemainingPhotos = -1;
        }
        mUI.updateRemainingPhotos(mRemainingPhotos);
    }

    private void onResumeTasks() {
        Log.v(TAG, "Executing onResumeTasks.");
        if (mOpenCameraFail || mCameraDisabled) return;

        if (mOpenCameraThread == null) {
            mOpenCameraThread = new OpenCameraThread();
            mOpenCameraThread.start();
        }

        mJpegPictureCallbackTime = 0;
        mZoomValue = 0;

        // If first time initialization is not finished, put it in the
        // message queue.
        if (!mFirstTimeInitialized) {
            mHandler.sendEmptyMessage(FIRST_TIME_INIT);
        } else {
            initializeSecondTime();
        }
        mUI.initDisplayChangeListener();
        keepScreenOnAwhile();

        UsageStatistics.onContentViewChanged(
                UsageStatistics.COMPONENT_CAMERA, "PhotoModule");

        Sensor gsensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        if (gsensor != null) {
            mSensorManager.registerListener(this, gsensor, SensorManager.SENSOR_DELAY_NORMAL);
        }

        Sensor msensor = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
        if (msensor != null) {
            mSensorManager.registerListener(this, msensor, SensorManager.SENSOR_DELAY_NORMAL);
        }

        mOnResumeTime = SystemClock.uptimeMillis();
        checkDisplayRotation();

        mAnimateCapture = SystemProperties.getBoolean(
                PERSIST_CAPTURE_ANIMATION, true);
    }

    @Override
    public void onPauseBeforeSuper() {
        mPaused = true;
        Sensor gsensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        if (gsensor != null) {
            mSensorManager.unregisterListener(this, gsensor);
        }

        Sensor msensor = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
        if (msensor != null) {
            mSensorManager.unregisterListener(this, msensor);
        }

        if(selfieThread != null) {
            selfieThread.interrupt();
        }
        mUI.stopSelfieFlash();

        Log.d(TAG, "remove idle handleer in onPause");
        removeIdleHandler();
    }

    @Override
    public void onPauseAfterSuper() {
        Log.v(TAG, "On pause.");
        mUI.showPreviewCover();
        mUI.hideSurfaceView();

        try {
            if (mOpenCameraThread != null) {
                mOpenCameraThread.join();
            }
        } catch (InterruptedException ex) {
            // ignore
        }
        mOpenCameraThread = null;
        // Reset the focus first. Camera CTS does not guarantee that
        // cancelAutoFocus is allowed after preview stops.
        if (mCameraDevice != null && mCameraState != PREVIEW_STOPPED) {
            mCameraDevice.cancelAutoFocus();
        }
        resetManual3ASettings();
        // If the camera has not been opened asynchronously yet,
        // and startPreview hasn't been called, then this is a no-op.
        // (e.g. onResume -> onPause -> onResume).
        stopPreview();

        // Load the power shutter
        mActivity.initPowerShutter(mPreferences);

        // Load max brightness
        mActivity.initMaxBrightness(mPreferences);

        mNamedImages = null;

        if (mLocationManager != null) mLocationManager.recordLocation(false);

        // If we are in an image capture intent and has taken
        // a picture, we just clear it in onPause.
        mJpegImageData = null;

        // Remove the messages and runnables in the queue.
        mHandler.removeCallbacksAndMessages(null);

        closeCamera();

        resetScreenOn();
        mUI.onPause();

        mPendingSwitchCameraId = -1;
        if (mFocusManager != null) mFocusManager.removeMessages();
        MediaSaveService s = mActivity.getMediaSaveService();
        if (s != null) {
            s.setListener(null);
        }
        mUI.removeDisplayChangeListener();
    }

    /**
     * The focus manager is the first UI related element to get initialized,
     * and it requires the RenderOverlay, so initialize it here
     */
    private void initializeFocusManager() {
        // Create FocusManager object. startPreview needs it.
        // if mFocusManager not null, reuse it
        // otherwise create a new instance
        if (mFocusManager != null) {
            mFocusManager.removeMessages();
        } else {
            CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
            mMirror = (info.facing == CameraInfo.CAMERA_FACING_FRONT);
            String[] defaultFocusModes = mActivity.getResources().getStringArray(
                    R.array.pref_camera_focusmode_default_array);
            synchronized (this){
                if (mFocusManager == null) {
                    mFocusManager = new FocusOverlayManager(mPreferences, defaultFocusModes,
                            mInitialParams, this, mMirror,
                            mActivity.getMainLooper(), mUI != null ? mUI.getFocusRing() : null);
                }
            }
        }
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.v(TAG, "onConfigurationChanged");
        setDisplayOrientation();
        resizeForPreviewAspectRatio();
    }

    @Override
    public void updateCameraOrientation() {
        if (mDisplayRotation != CameraUtil.getDisplayRotation(mActivity)) {
            setDisplayOrientation();
        }
    }

    @Override
    public void onActivityResult(
            int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
            case REQUEST_CROP: {
                Intent intent = new Intent();
                if (data != null) {
                    Bundle extras = data.getExtras();
                    if (extras != null) {
                        intent.putExtras(extras);
                    }
                }
                mActivity.setResultEx(resultCode, intent);
                mActivity.finish();

                File path = mActivity.getFileStreamPath(sTempCropFilename);
                path.delete();

                break;
            }
        }
    }

    protected CameraManager.CameraProxy getCamera() {
        return mCameraDevice;
    }

    private boolean canTakePicture() {
        return isCameraIdle() && (mActivity.getStorageSpaceBytes() > Storage.LOW_STORAGE_THRESHOLD_BYTES);
    }

    @Override
    public void autoFocus() {
        mFocusStartTime = System.currentTimeMillis();
        mCameraDevice.autoFocus(mHandler, mAutoFocusCallback);
        setCameraState(FOCUSING);
    }

    @Override
    public void cancelAutoFocus() {
        if (null != mCameraDevice ) {
            mCameraDevice.cancelAutoFocus();
            setCameraState(IDLE);
            mFocusManager.setAeAwbLock(false);
            setCameraParameters(UPDATE_PARAM_PREFERENCE);
        }
    }

    // Preview area is touched. Handle touch focus.
    @Override
    public void onSingleTapUp(View view, int x, int y) {
        if (mPaused || mCameraDevice == null || !mFirstTimeInitialized
                || mCameraState == SNAPSHOT_IN_PROGRESS
                || mCameraState == SWITCHING_CAMERA
                || mCameraState == PREVIEW_STOPPED) {
            return;
        }
        // Check if metering area or focus area is supported.
        if (!mFocusAreaSupported && !mMeteringAreaSupported) return;
        mFocusManager.onSingleTapUp(x, y);
    }

    @Override
    public boolean onBackPressed() {
        return mUI.onBackPressed();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        // Do not handle any key if the activity is
        // not in active camera/video mode
        if (!mActivity.isInCameraApp()) {
            return false;
        }
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
                if (mFirstTimeInitialized && (mUI.mMenuInitialized)) {
                    if (!CameraActivity.mPowerShutter && !CameraUtil.hasCameraKey()) {
                        onShutterButtonFocus(true);
                    } else {
                        mUI.onScaleStepResize(true);
                    }
                }
                return true;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
                if (mFirstTimeInitialized && (mUI.mMenuInitialized)) {
                    if (!CameraActivity.mPowerShutter && !CameraUtil.hasCameraKey()) {
                        onShutterButtonFocus(true);
                    } else {
                        mUI.onScaleStepResize(false);
                    }
                }
                return true;
            case KeyEvent.KEYCODE_FOCUS:
                if (mFirstTimeInitialized) {
                    if (event.getRepeatCount() == 0) {
                        onShutterButtonFocus(true);
                    }
                    return true;
                }
                return false;
            case KeyEvent.KEYCODE_CAMERA:
            case KeyEvent.KEYCODE_HEADSETHOOK:
                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
                    onShutterButtonClick();
                }
                return true;
            case KeyEvent.KEYCODE_DPAD_CENTER:
                // If we get a dpad center event without any focused view, move
                // the focus to the shutter button and press it.
                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
                    // Start auto-focus immediately to reduce shutter lag. After
                    // the shutter button gets the focus, onShutterButtonFocus()
                    // will be called again but it is fine.
                    onShutterButtonFocus(true);
                    mUI.pressShutterButton();
                }
                return true;
            case KeyEvent.KEYCODE_POWER:
                if (mFirstTimeInitialized && event.getRepeatCount() == 0
                        && CameraActivity.mPowerShutter && !CameraUtil.hasCameraKey()) {
                    onShutterButtonFocus(true);
                }
                return true;
        }
        return false;
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
                if (!CameraActivity.mPowerShutter && !CameraUtil.hasCameraKey()
                        && mFirstTimeInitialized) {
                    onShutterButtonClick();
                }
                return true;
            case KeyEvent.KEYCODE_FOCUS:
                if (mFirstTimeInitialized) {
                    onShutterButtonFocus(false);
                }
                return true;
            case KeyEvent.KEYCODE_POWER:
                if (CameraActivity.mPowerShutter && !CameraUtil.hasCameraKey()
                        && mFirstTimeInitialized) {
                    onShutterButtonClick();
                }
                return true;
        }
        return false;
    }

    private void closeCamera() {
        Log.v(TAG, "Close camera device.");
        if (mCameraDevice != null) {
            mCameraDevice.setZoomChangeListener(null);
            mCameraDevice.setFaceDetectionCallback(null, null);
            mCameraDevice.setErrorCallback(null);

            if (mActivity.isSecureCamera() && !CameraActivity.isFirstStartAfterScreenOn()) {
                // Blocks until camera is actually released.
                CameraHolder.instance().strongRelease();
            } else {
                CameraHolder.instance().release();
            }

            mFaceDetectionStarted = false;
            mCameraDevice = null;
            setCameraState(PREVIEW_STOPPED);
            if (mFocusManager != null) {
                mFocusManager.onCameraReleased();
            }
        }
    }

    private void setDisplayOrientation() {
        mDisplayRotation = CameraUtil.getDisplayRotation(mActivity);
        mDisplayOrientation = CameraUtil.getDisplayOrientation(mDisplayRotation, mCameraId);
        mCameraDisplayOrientation = mDisplayOrientation;
        // This will be called again in checkDisplayRotation(), so there
        // should not be any problem even if mUI is null.
        if (mUI != null) {
            mUI.setDisplayOrientation(mDisplayOrientation);
        }
        if (mFocusManager != null) {
            mFocusManager.setDisplayOrientation(mDisplayOrientation);
        }
        // Change the camera display orientation
        if (mCameraDevice != null) {
            mCameraDevice.setDisplayOrientation(mCameraDisplayOrientation);
        }
    }

    /** Only called by UI thread. */
    private void setupPreview() {
        mFocusManager.resetTouchFocus();
        startPreview();
    }

    /** This can run on a background thread, so don't do UI updates here. Post any
             view updates to MainHandler or do it on onPreviewStarted() .  */
    private void startPreview() {
        if (mPaused || (mCameraDevice == null) || (null == mFocusManager) ||
                (mParameters == null)) {
            return;
        }

        synchronized (mCameraDevice) {
            SurfaceHolder sh = null;
            Log.v(TAG, "startPreview: SurfaceHolder (MDP path)");
            if (mUI != null) {
                sh = mUI.getSurfaceHolder();
            }

            // Let UI set its expected aspect ratio
            mCameraDevice.setPreviewDisplay(sh);
        }

        if (!mCameraPreviewParamsReady) {
            Log.w(TAG, "startPreview: parameters for preview are not ready.");
            return;
        }
        mErrorCallback.setActivity(mActivity);
        mCameraDevice.setErrorCallback(mErrorCallback);

        // Reset camera state after taking a picture
        if (mCameraState != PREVIEW_STOPPED && mCameraState != INIT) {
            setCameraState(IDLE);
        }

        // Preview needs to be stopped when changing resolution
        if (mRestartPreview && mCameraState != PREVIEW_STOPPED && mCameraState != INIT) {
            stopPreview();
            mRestartPreview = false;
        }

        if (mFocusManager == null) initializeFocusManager();

        if (!mSnapshotOnIdle) {
            mFocusManager.setAeAwbLock(false); // Unlock AE and AWB.
        }

        setCameraParameters(UPDATE_PARAM_ALL);

        mCameraDevice.startPreview();
        setCameraState(IDLE);
        mCameraDevice.setOneShotPreviewCallback(mHandler,
                new CameraManager.CameraPreviewDataCallback() {
                    @Override
                    public void onPreviewFrame(byte[] data, CameraProxy camera) {
                        mUI.hidePreviewCover();
                    }
                });
        mHandler.sendEmptyMessage(ON_PREVIEW_STARTED);

        setDisplayOrientation();

        if (!mSnapshotOnIdle) {
            // If the focus mode is continuous autofocus, call cancelAutoFocus to
            // resume it because it may have been paused by autoFocus call.
            if (CameraUtil.FOCUS_MODE_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false)) ||
                    CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode(false))) {
                mCameraDevice.cancelAutoFocus();
            }
        } else {
            mHandler.post(mDoSnapRunnable);
        }
    }

    @Override
    public void stopPreview() {
        if (mCameraDevice != null && mCameraDevice.getCamera().previewEnabled()) {
            if (mCameraState == LONGSHOT) {
                mCameraDevice.setLongshot(false);
                mLongshotActive = false;
            }
            Log.v(TAG, "stopPreview");
            mCameraDevice.stopPreview();
        }
        setCameraState(PREVIEW_STOPPED);
        if (mFocusManager != null) mFocusManager.onPreviewStopped();
        stopFaceDetection();
    }

    @SuppressWarnings("deprecation")
    private void updateCameraParametersInitialize() {
        // Reset preview frame rate to the maximum because it may be lowered by
        // video camera application.
        int[] fpsRange = CameraUtil.getPhotoPreviewFpsRange(mParameters);
        if (fpsRange != null && fpsRange.length > 0) {
            mParameters.setPreviewFpsRange(
                    fpsRange[Parameters.PREVIEW_FPS_MIN_INDEX],
                    fpsRange[Parameters.PREVIEW_FPS_MAX_INDEX]);
        }

        mParameters.set(CameraUtil.RECORDING_HINT, CameraUtil.FALSE);

        // Disable video stabilization. Convenience methods not available in API
        // level <= 14
        String vstabSupported = mParameters.get("video-stabilization-supported");
        if ("true".equals(vstabSupported)) {
            mParameters.set("video-stabilization", "false");
        }
    }

    private void updateCameraParametersZoom() {
        // Set zoom.
        if (mParameters.isZoomSupported()) {
            Parameters p = mCameraDevice.getParameters();
            mZoomValue = p.getZoom();
            mParameters.setZoom(mZoomValue);
        }
    }
    private boolean needRestart() {
        mRestartPreview = false;
        String zsl = mPreferences.getString(CameraSettings.KEY_ZSL,
                                  mActivity.getString(R.string.pref_camera_zsl_default));
        if(zsl.equals("on") && mSnapshotMode != CameraInfo.CAMERA_SUPPORT_MODE_ZSL
           && mCameraState != PREVIEW_STOPPED) {
            //Switch on ZSL Camera mode
            Log.v(TAG, "Switching to ZSL Camera Mode. Restart Preview");
            mRestartPreview = true;
            return mRestartPreview;
        }
        if(zsl.equals("off") && mSnapshotMode != CameraInfo.CAMERA_SUPPORT_MODE_NONZSL
                 && mCameraState != PREVIEW_STOPPED) {
            //Switch on Normal Camera mode
            Log.v(TAG, "Switching to Normal Camera Mode. Restart Preview");
            mRestartPreview = true;
            return mRestartPreview;
        }
        return mRestartPreview;
    }

    private void qcomUpdateAdvancedFeatures(String ubiFocus,
                                            String chromaFlash,
                                            String reFocus,
                                            String optiZoom,
                                            String fssr,
                                            String truePortrait,
                                            String multiTouchFocus,
                                            String stillMore) {
        if (CameraUtil.isSupported(ubiFocus,
              CameraSettings.getSupportedAFBracketingModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_AF_BRACKETING, ubiFocus);
        }
        if (CameraUtil.isSupported(chromaFlash,
              CameraSettings.getSupportedChromaFlashModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_CHROMA_FLASH, chromaFlash);
        }
        if (CameraUtil.isSupported(optiZoom,
              CameraSettings.getSupportedOptiZoomModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_OPTI_ZOOM, optiZoom);
        }
        if (CameraUtil.isSupported(reFocus,
              CameraSettings.getSupportedRefocusModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_RE_FOCUS, reFocus);
        }
        if (CameraUtil.isSupported(fssr,
              CameraSettings.getSupportedFSSRModes(mParameters))) {
             mParameters.set(CameraSettings.KEY_QC_FSSR, fssr);
        }
        if (CameraUtil.isSupported(truePortrait,
              CameraSettings.getSupportedTruePortraitModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_TP, truePortrait);
        }
        if(CameraUtil.isSupported(multiTouchFocus,
              CameraSettings.getSupportedMultiTouchFocusModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_MULTI_TOUCH_FOCUS, multiTouchFocus);
        }
        if (CameraUtil.isSupported(stillMore,
              CameraSettings.getSupportedStillMoreModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_STILL_MORE, stillMore);
        }
    }

    private String getSaturationSafe() {
        String ret = null;
        if (CameraUtil.isSupported(mParameters, "saturation") &&
                CameraUtil.isSupported(mParameters, "max-saturation")) {
            ret = mPreferences.getString(
                    CameraSettings.KEY_SATURATION,
                    mActivity.getString(R.string.pref_camera_saturation_default));
        }
        return ret;
    }

    private String getContrastSafe() {
        String ret = null;
        if (CameraUtil.isSupported(mParameters, "contrast") &&
                CameraUtil.isSupported(mParameters, "max-contrast")) {
            ret = mPreferences.getString(
                    CameraSettings.KEY_CONTRAST,
                    mActivity.getString(R.string.pref_camera_contrast_default));
        }
        return ret;
    }

    private String getSharpnessSafe() {
        String ret = null;
        if (CameraUtil.isSupported(mParameters, "sharpness") &&
                CameraUtil.isSupported(mParameters, "max-sharpness")) {
            ret = mPreferences.getString(
                    CameraSettings.KEY_SHARPNESS,
                    mActivity.getString(R.string.pref_camera_sharpness_default));
        }
        return ret;
    }

    /** This can run on a background thread, so don't do UI updates here.*/
    private void qcomUpdateCameraParametersPreference() {
        //qcom Related Parameter update
        String longshot_enable = mPreferences.getString(
                CameraSettings.KEY_LONGSHOT,
                mActivity.getString(R.string.pref_camera_longshot_default));
        mParameters.set("long-shot", longshot_enable);

        // Set Touch AF/AEC parameter.
        if (CameraUtil.isSupported(mParameters.TOUCH_AF_AEC_ON,
                mParameters.getSupportedTouchAfAec())) {
            mParameters.setTouchAfAec(mParameters.TOUCH_AF_AEC_ON);
        }

        // Set Picture Format
        // Picture Formats specified in UI should be consistent with
        // PIXEL_FORMAT_JPEG and PIXEL_FORMAT_RAW constants
        String pictureFormat = mPreferences.getString(
                CameraSettings.KEY_PICTURE_FORMAT,
                mActivity.getString(R.string.pref_camera_picture_format_default));

        //Change picture format to JPEG if camera is start from other APK by intent.
        if (mIsImageCaptureIntent && !pictureFormat.equals(PIXEL_FORMAT_JPEG)) {
            pictureFormat = PIXEL_FORMAT_JPEG;
            Editor editor = mPreferences.edit();
            editor.putString(CameraSettings.KEY_PICTURE_FORMAT, PIXEL_FORMAT_JPEG);
            editor.apply();
        }
        Log.v(TAG, "Picture format value =" + pictureFormat);
        mParameters.set(KEY_PICTURE_FORMAT, pictureFormat);

        // Set JPEG quality.
        String jpegQuality = mPreferences.getString(
                CameraSettings.KEY_JPEG_QUALITY,
                mActivity.getString(R.string.pref_camera_jpegquality_default));
        Size pic_size = mParameters.getPictureSize();
        if (pic_size == null) {
            Log.e(TAG, "error getPictureSize: size is null");
        } else {
            mParameters.setJpegQuality(Integer.parseInt(jpegQuality));
            int jpegFileSize = estimateJpegFileSize(pic_size, jpegQuality);
            if (jpegFileSize != mJpegFileSizeEstimation) {
                mJpegFileSizeEstimation = jpegFileSize;
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        updateRemainingPhotos();
                    }
                });
            }
        }

        // Set Selectable Zone Af parameter.
        String selectableZoneAf = mPreferences.getString(
            CameraSettings.KEY_SELECTABLE_ZONE_AF,
            mActivity.getString(R.string.pref_camera_selectablezoneaf_default));
        List<String> str = mParameters.getSupportedSelectableZoneAf();
        if (CameraUtil.isSupported(selectableZoneAf, mParameters.getSupportedSelectableZoneAf())) {
            mParameters.setSelectableZoneAf(selectableZoneAf);
        }

        // Set wavelet denoise mode
        if (mParameters.getSupportedDenoiseModes() != null) {
            String Denoise = mPreferences.getString( CameraSettings.KEY_DENOISE,
                             mActivity.getString(R.string.pref_camera_denoise_default));
            mParameters.setDenoise(Denoise);
        }
        // Set Redeye Reduction
        String redeyeReduction = mPreferences.getString(
                CameraSettings.KEY_REDEYE_REDUCTION,
                mActivity.getString(R.string.pref_camera_redeyereduction_default));
        if (CameraUtil.isSupported(redeyeReduction,
            mParameters.getSupportedRedeyeReductionModes())) {
            mParameters.setRedeyeReductionMode(redeyeReduction);
        }
        // Set ISO parameter
        if ((mManual3AEnabled & MANUAL_EXPOSURE) == 0) {
            String iso = mPreferences.getString(
                    CameraSettings.KEY_ISO,
                    mActivity.getString(R.string.pref_camera_iso_default));
            if (CameraUtil.isSupported(iso,
                CameraSettings.getSupportedIsoValues(mParameters))) {
                CameraSettings.setISOValue(mParameters, iso);
            }
        }
        // Set shutter speed parameter
        String shutterSpeed = mPreferences.getString(
                CameraSettings.KEY_SHUTTER_SPEED,
                mActivity.getString(R.string.pref_camera_shutter_speed_default));
        if (CameraUtil.isSupported(shutterSpeed,
            CameraSettings.getSupportedShutterSpeedValues(mParameters))) {
            mParameters.set(CameraSettings.KEY_SNAPCAM_SHUTTER_SPEED, shutterSpeed);
        }
        // Set color effect parameter.
        String colorEffect = mPreferences.getString(
                CameraSettings.KEY_COLOR_EFFECT,
                mActivity.getString(R.string.pref_camera_coloreffect_default));
        Log.v(TAG, "Color effect value =" + colorEffect);
        if (CameraUtil.isSupported(colorEffect, mParameters.getSupportedColorEffects())) {
            mParameters.setColorEffect(colorEffect);
        }

        //Set Saturation
        String saturationStr = getSaturationSafe();
        if (saturationStr != null) {
            int saturation = Integer.parseInt(saturationStr);
            Log.v(TAG, "Saturation value =" + saturation);
            if((0 <= saturation) && (saturation <= mParameters.getMaxSaturation())){
                mParameters.setSaturation(saturation);
            }
        }
        // Set contrast parameter.
        String contrastStr = getContrastSafe();
        if (contrastStr != null) {
            int contrast = Integer.parseInt(contrastStr);
            Log.v(TAG, "Contrast value =" + contrast);
            if ((0 <= contrast) && (contrast <= mParameters.getMaxContrast())) {
                mParameters.setContrast(contrast);
            }
        }
        // Set sharpness parameter
        String sharpnessStr = getSharpnessSafe();
        if (sharpnessStr != null) {
            int sharpness = Integer.parseInt(sharpnessStr) *
                    (mParameters.getMaxSharpness() / MAX_SHARPNESS_LEVEL);
            Log.v(TAG, "Sharpness value =" + sharpness);
            if ((0 <= sharpness) && (sharpness <= mParameters.getMaxSharpness())) {
                mParameters.setSharpness(sharpness);
            }
        }
        // Set Face Recognition
        String faceRC = mPreferences.getString(
                CameraSettings.KEY_FACE_RECOGNITION,
                mActivity.getString(R.string.pref_camera_facerc_default));
        Log.v(TAG, "Face Recognition value = " + faceRC);
        if (CameraUtil.isSupported(faceRC,
                CameraSettings.getSupportedFaceRecognitionModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_FACE_RECOGNITION, faceRC);
        }
        // Set AE Bracketing
        String aeBracketing = mPreferences.getString(
                CameraSettings.KEY_AE_BRACKET_HDR,
                mActivity.getString(R.string.pref_camera_ae_bracket_hdr_default));
        Log.v(TAG, "AE Bracketing value =" + aeBracketing);
        if (CameraUtil.isSupported(aeBracketing,
                CameraSettings.getSupportedAEBracketingModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_AE_BRACKETING, aeBracketing);
        }

        // Set CDS
        String cds = mPreferences.getString(
                CameraSettings.KEY_CDS_MODE,
                mActivity.getString(R.string.pref_camera_cds_default));
        if ((mPrevSavedCDS == null) && (cds != null)) {
            mPrevSavedCDS = cds;
        }
        if (CameraUtil.isSupported(cds,
                CameraSettings.getSupportedCDSModes(mParameters))) {
            mParameters.set(CameraSettings.KEY_QC_CDS_MODE, cds);
        }

        // Set TNR
        String tnr = mPreferences.getString(
                CameraSettings.KEY_TNR_MODE,
                mActivity.getString(R.string.pref_camera_tnr_default));
        if (CameraUtil.isSupported(tnr,
                CameraSettings.getSupportedTNRModes(mParameters))) {
            if (!tnr.equals(mActivity.getString(R.string.
                    pref_camera_tnr_value_off))) {
                mParameters.set(CameraSettings.KEY_QC_CDS_MODE,
                        mActivity.getString(R.string.pref_camera_cds_value_off));
                mActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        mUI.overrideSettings(CameraSettings.KEY_QC_CDS_MODE,
                            mActivity.getString(R.string.pref_camera_cds_value_off));
                    }
                });
                if (cds != null) {
                    mPrevSavedCDS = cds;
                }
                isTNREnabled = true;
            } else if (isTNREnabled) {
                mParameters.set(CameraSettings.KEY_QC_CDS_MODE, mPrevSavedCDS);
                mActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        mUI.overrideSettings(CameraSettings.KEY_QC_CDS_MODE,
                            mPrevSavedCDS);
                    }
                });
                isTNREnabled = false;
            }
            mParameters.set(CameraSettings.KEY_QC_TNR_MODE, tnr);
        }

        // Set hdr mode
        String hdrMode = mPreferences.getString(
                CameraSettings.KEY_HDR_MODE,
                mActivity.getString(R.string.pref_camera_hdr_mode_default));
        if (CameraUtil.isSupported(hdrMode,
                CameraSettings.getSupportedHDRModes(mParameters))) {
            Log.v(TAG, "HDR Mode value =" + hdrMode);
            mParameters.set(CameraSettings.KEY_SNAPCAM_HDR_MODE, hdrMode);
        }

        // Set hdr need 1x
        String hdrNeed1x = mPreferences.getString(
                CameraSettings.KEY_HDR_NEED_1X,
                mActivity.getString(R.string.pref_camera_hdr_need_1x_default));
        if (CameraUtil.isSupported(hdrNeed1x,
                CameraSettings.getSupportedHDRNeed1x(mParameters))) {
            Log.v(TAG, "HDR need 1x value =" + hdrNeed1x);
            mParameters.set(CameraSettings.KEY_SNAPCAM_HDR_NEED_1X, hdrNeed1x);
        }

        // Set Advanced features.
        String advancedFeature = mPreferences.getString(
                CameraSettings.KEY_ADVANCED_FEATURES,
                mActivity.getString(R.string.pref_camera_advanced_feature_default));
        Log.e(TAG, " advancedFeature value =" + advancedFeature);

        mRefocus = false;
        if(advancedFeature != null) {
             String ubiFocusOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_ubifocus_off);
             String chromaFlashOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_chromaflash_off);
             String optiZoomOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_optizoom_off);
             String reFocusOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_refocus_off);
             String fssrOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_FSSR_off);
             String truePortraitOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_trueportrait_off);
             String multiTouchFocusOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_multi_touch_focus_off);
             String stillMoreOff = mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_stillmore_off);

             if (advancedFeature.equals(mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_ubifocus_on))) {
                 qcomUpdateAdvancedFeatures(advancedFeature,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_chromaflash_on))) {
                 qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           advancedFeature,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                 pref_camera_advanced_feature_value_refocus_on))) {
                 qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           advancedFeature,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
                 mRefocus = true;
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                pref_camera_advanced_feature_value_optizoom_on))) {
                qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           advancedFeature,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                pref_camera_advanced_feature_value_FSSR_on))) {
                 qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           advancedFeature,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                pref_camera_advanced_feature_value_trueportrait_on))) {
                qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           advancedFeature,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                pref_camera_advanced_feature_value_multi_touch_focus_on))) {
                qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           advancedFeature,
                                           stillMoreOff);
            } else if (advancedFeature.equals(mActivity.getString(R.string.
                pref_camera_advanced_feature_value_stillmore_on))) {
                qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           advancedFeature);
            } else {
                qcomUpdateAdvancedFeatures(ubiFocusOff,
                                           chromaFlashOff,
                                           reFocusOff,
                                           optiZoomOff,
                                           fssrOff,
                                           truePortraitOff,
                                           multiTouchFocusOff,
                                           stillMoreOff);
            }
        }

        if (mActivity.getString(R.string.pref_camera_advanced_feature_value_trueportrait_on)
                .equals(advancedFeature)) {
            // face detection must always be on for truePortrait
            if (CameraUtil.isSupported(Parameters.FACE_DETECTION_ON, mParameters.getSupportedFaceDetectionModes())) {
                mActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        mUI.overrideSettings(CameraSettings.KEY_FACE_DETECTION, Parameters.FACE_DETECTION_ON);
                    }
                });

                mParameters.setFaceDetectionMode(Parameters.FACE_DETECTION_ON);
                if(mFaceDetectionEnabled == false) {
                    mFaceDetectionEnabled = true;
                    startFaceDetection();
                }
            }
        } else {
            // Set face detetction parameter.
            // clear override to re-enable setting if true portrait is off.
            mActivity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    mUI.overrideSettings(CameraSettings.KEY_FACE_DETECTION, null);
                }
            });

            String faceDetection = mPreferences.getString(
                CameraSettings.KEY_FACE_DETECTION,
                mActivity.getString(R.string.pref_camera_facedetection_default));

            if (CameraUtil.isSupported(faceDetection, mParameters.getSupportedFaceDetectionModes())) {
                mParameters.setFaceDetectionMode(faceDetection);
                if(faceDetection.equals("on") && mFaceDetectionEnabled == false) {
                    mFaceDetectionEnabled = true;
                    startFaceDetection();
                }
                if(faceDetection.equals("off") && mFaceDetectionEnabled == true) {
                    stopFaceDetection();
                    mFaceDetectionEnabled = false;
                }
            }
        }

        // Set auto exposure parameter.
        String autoExposure = mPreferences.getString(
                CameraSettings.KEY_AUTOEXPOSURE,
                mActivity.getString(R.string.pref_camera_autoexposure_default));
        Log.v(TAG, "autoExposure value =" + autoExposure);
        if (CameraUtil.isSupported(autoExposure, mParameters.getSupportedAutoexposure())) {
            mParameters.setAutoExposure(autoExposure);
        }

        // Set anti banding parameter.
        String antiBanding = mPreferences.getString(
                 CameraSettings.KEY_ANTIBANDING,
                 mActivity.getString(R.string.pref_camera_antibanding_default));
        Log.v(TAG, "antiBanding value =" + antiBanding);
        if (CameraUtil.isSupported(antiBanding, mParameters.getSupportedAntibanding())) {
            mParameters.setAntibanding(antiBanding);
        }

        String zsl = mPreferences.getString(CameraSettings.KEY_ZSL,
                                  mActivity.getString(R.string.pref_camera_zsl_default));
        mParameters.setZSLMode(zsl);
        if(zsl.equals("on")) {
            //Switch on ZSL Camera mode
            mSnapshotMode = CameraInfo.CAMERA_SUPPORT_MODE_ZSL;
            mParameters.setCameraMode(1);
            mFocusManager.setZslEnable(true);

            //Raw picture format is not supported under ZSL mode
            mParameters.set(KEY_PICTURE_FORMAT, PIXEL_FORMAT_JPEG);

            //Try to set CAF for ZSL
            if (!mFocusManager.isTouch()) {
                if(CameraUtil.isSupported(CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE,
                        mParameters.getSupportedFocusModes())) {
                    mFocusManager.overrideFocusMode(CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE);
                    mParameters.setFocusMode(CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE);
                }
                else if(CameraUtil.isSupported(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE,
                        mParameters.getSupportedFocusModes())) {
                    mFocusManager.overrideFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                    mParameters.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                }
            } else if (mFocusManager.isTouch()) {
                mFocusManager.overrideFocusMode(null);
                mParameters.setFocusMode(mFocusManager.getFocusMode(false));
            } else {
                // If not supported use the current mode
                mFocusManager.overrideFocusMode(mFocusManager.getFocusMode(false));
            }

            if (!pictureFormat.equals(PIXEL_FORMAT_JPEG)) {
                mActivity.runOnUiThread(new Runnable() {
                    public void run() {
                        RotateTextToast.makeText(mActivity, R.string.error_app_unsupported_raw,
                                Toast.LENGTH_SHORT).show();
                    }
                });
            }
        } else if(zsl.equals("off")) {
            mSnapshotMode = CameraInfo.CAMERA_SUPPORT_MODE_NONZSL;
            mParameters.setCameraMode(0);
            mFocusManager.setZslEnable(false);
            if ((mManual3AEnabled & MANUAL_FOCUS) == 0) {
                mFocusManager.overrideFocusMode(null);
                mParameters.setFocusMode(mFocusManager.getFocusMode(false));
            }
        }

        updateAutoHDR();

        //Set Histogram
        String histogram = mPreferences.getString(
                CameraSettings.KEY_HISTOGRAM,
                mActivity.getString(R.string.pref_camera_histogram_default));
        if (CameraUtil.isSupported(histogram,
            mParameters.getSupportedHistogramModes()) && mCameraDevice != null) {
            // Call for histogram
            mHistogramEnabled = histogram.equals("enable");
            mActivity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    mUI.setHistogramEnabled(mHistogramEnabled, getCamera());
                }
            });
            mCameraDevice.setHistogramMode(mHistogramEnabled ? mStatsCallback : null);
        }

        setFlipValue();

        /* Disable focus if aebracket is ON */
        String aeBracket = mParameters.get(CameraSettings.KEY_QC_AE_BRACKETING);
        if (aeBracket != null && !aeBracket.equalsIgnoreCase("off")) {
            String fMode = Parameters.FLASH_MODE_OFF;
            mParameters.setFlashMode(fMode);
        }

        mLongShotMaxSnap = SystemProperties.getInt(PERSIST_LONGSHOT_MAX_SNAP, -1);
        mParameters.set("max-longshot-snap",mLongShotMaxSnap);
    }

    private int estimateJpegFileSize(final Size size, final String quality) {
        int[] ratios = mActivity.getResources().getIntArray(R.array.jpegquality_compression_ratio);
        String[] qualities = mActivity.getResources().getStringArray(
                R.array.pref_camera_jpegquality_entryvalues);
        int ratio = 0;
        for (int i = ratios.length - 1; i >= 0; --i) {
            if (qualities[i].equals(quality)) {
                ratio = ratios[i];
                break;
            }
        }

        if (ratio == 0) {
            return 0;
        } else {
            return size.width * size.height * 3 / ratio;
        }
    }

    private void updateAutoHDR() {
        String autoHdr = mPreferences.getString(CameraSettings.KEY_AUTO_HDR,
                mActivity.getString(R.string.pref_camera_auto_hdr_default));
        String advancedFeature = mPreferences.getString(
                CameraSettings.KEY_ADVANCED_FEATURES,
                mActivity.getString(R.string.pref_camera_advanced_feature_default));

        if (CameraUtil.isAutoHDRSupported(mParameters)) {
            if (autoHdr.equals("enable") && 
                    ("asd".equals(mSceneMode) || "auto".equals(mSceneMode)) &&
                    CameraUtil.isSupported("asd", mParameters.getSupportedSceneModes()) &&
                    (advancedFeature == null || "none".equals(advancedFeature))) {
                mParameters.setSceneMode(Parameters.SCENE_MODE_ASD);
                mCameraDevice.setMetadataCb(mMetaDataCallback);
                mParameters.set("auto-hdr-enable", "enable");
                return;
            }
            mCameraDevice.setMetadataCb(null);
            mParameters.set("auto-hdr-enable", "disable");
        }
    }

    private void setFlipValue() {
        // Read Flip mode from adb command
        //value: 0(default) - FLIP_MODE_OFF
        //value: 1 - FLIP_MODE_H
        //value: 2 - FLIP_MODE_V
        //value: 3 - FLIP_MODE_VH
        int preview_flip_value = SystemProperties.getInt("debug.camera.preview.flip", 0);
        int video_flip_value = SystemProperties.getInt("debug.camera.video.flip", 0);
        int picture_flip_value = SystemProperties.getInt("debug.camera.picture.flip", 0);
        int rotation = CameraUtil.getJpegRotation(mCameraId, mOrientation);
        mParameters.setRotation(rotation);
        if (rotation == 90 || rotation == 270) {
            // in case of 90 or 270 degree, V/H flip should reverse
            if (preview_flip_value == 1) {
                preview_flip_value = 2;
            } else if (preview_flip_value == 2) {
                preview_flip_value = 1;
            }
            if (video_flip_value == 1) {
                video_flip_value = 2;
            } else if (video_flip_value == 2) {
                video_flip_value = 1;
            }
            if (picture_flip_value == 1) {
                picture_flip_value = 2;
            } else if (picture_flip_value == 2) {
                picture_flip_value = 1;
            }
        }
        String preview_flip = CameraUtil.getFilpModeString(preview_flip_value);
        String video_flip = CameraUtil.getFilpModeString(video_flip_value);
        String picture_flip = CameraUtil.getFilpModeString(picture_flip_value);
        if(CameraUtil.isSupported(preview_flip, CameraSettings.getSupportedFlipMode(mParameters))){
            mParameters.set(CameraSettings.KEY_QC_PREVIEW_FLIP, preview_flip);
        }
        if(CameraUtil.isSupported(video_flip, CameraSettings.getSupportedFlipMode(mParameters))){
            mParameters.set(CameraSettings.KEY_QC_VIDEO_FLIP, video_flip);
        }
        if(CameraUtil.isSupported(picture_flip, CameraSettings.getSupportedFlipMode(mParameters))){
            mParameters.set(CameraSettings.KEY_QC_SNAPSHOT_PICTURE_FLIP, picture_flip);
        }
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void setAutoExposureLockIfSupported() {
        if (mAeLockSupported) {
            mParameters.setAutoExposureLock(mFocusManager.getAeAwbLock());
        }
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void setAutoWhiteBalanceLockIfSupported() {
        if (mAwbLockSupported) {
            mParameters.setAutoWhiteBalanceLock(mFocusManager.getAeAwbLock());
        }
    }

    private void setFocusAreasIfSupported() {
        if (mFocusAreaSupported) {
            mParameters.setFocusAreas(mFocusManager.getFocusAreas());
        }
    }

    private void setMeteringAreasIfSupported() {
        if (mMeteringAreaSupported) {
            mParameters.setMeteringAreas(mFocusManager.getMeteringAreas());
        }
    }

    /** This can run on a background thread, so don't do UI updates here.*/
    private boolean updateCameraParametersPreference() {
        setAutoExposureLockIfSupported();
        setAutoWhiteBalanceLockIfSupported();
        setFocusAreasIfSupported();
        setMeteringAreasIfSupported();

        // initialize focus mode
        if ((mManual3AEnabled & MANUAL_FOCUS) == 0) {
            mFocusManager.overrideFocusMode(null);
            mParameters.setFocusMode(mFocusManager.getFocusMode(false));
        }

        // Set picture size.
        String pictureSize = mPreferences.getString(
                CameraSettings.KEY_PICTURE_SIZE, null);
        if (pictureSize == null) {
            CameraSettings.initialCameraPictureSize(mActivity, mParameters);
        } else {
            Size old_size = mParameters.getPictureSize();
            Log.v(TAG, "old picture_size = " + old_size.width + " x " + old_size.height);
            List<Size> supported = mParameters.getSupportedPictureSizes();
            CameraSettings.setCameraPictureSize(
                    pictureSize, supported, mParameters);
            Size size = mParameters.getPictureSize();
            Log.v(TAG, "new picture_size = " + size.width + " x " + size.height);
            if (old_size != null && size != null) {
                if(!size.equals(old_size) && mCameraState != PREVIEW_STOPPED) {
                    Log.v(TAG, "Picture Size changed. Restart Preview.");
                    mRestartPreview = true;
                }
            }
        }
        Size size = mParameters.getPictureSize();

        // Set a preview size that is closest to the viewfinder height and has
        // the right aspect ratio.
        List<Size> sizes = mParameters.getSupportedPreviewSizes();
        Size optimalSize = CameraUtil.getOptimalPreviewSize(mActivity, sizes,
                (double) size.width / size.height);

        // Get default preview resolution from overlay
        String previewSizeForPhoto =
                mApplicationContext.getResources().getString(R.string.preview_size_for_photo);
        try {
            android.util.Size previewSize = android.util.Size.parseSize(previewSizeForPhoto);

            for (Size s : sizes) {
                if (s.width == previewSize.getWidth() && s.height == previewSize.getHeight()) {
                    optimalSize.width = previewSize.getWidth();
                    optimalSize.height = previewSize.getHeight();
                }
            }
            Log.v(TAG, "Preview resolution hardcoded to " + optimalSize.width + "x" + optimalSize.height);
        } catch (NumberFormatException e) {
            Log.e(TAG, "Invalid preview resolution: " + previewSizeForPhoto);
        } catch (NullPointerException e) {
            Log.v(TAG, "No default preview resolution given");
        }

        Size original = mParameters.getPreviewSize();
        if (!original.equals(optimalSize)) {
            mParameters.setPreviewSize(optimalSize.width, optimalSize.height);

            // Zoom related settings will be changed for different preview
            // sizes, so set and read the parameters to get latest values
            if (mHandler.getLooper() == Looper.myLooper()) {
                // On UI thread only, not when camera starts up
                setupPreview();
            } else {
                mCameraDevice.setParameters(mParameters);
            }
            mParameters = mCameraDevice.getParameters();
            Log.v(TAG, "Preview Size changed. Restart Preview");
            mRestartPreview = true;
        }

        Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height);
        size = mParameters.getPictureSize();

        // Set jpegthumbnail size
        // Set a jpegthumbnail size that is closest to the Picture height and has
        // the right aspect ratio.
        List<Size> supported = mParameters.getSupportedJpegThumbnailSizes();
        optimalSize = CameraUtil.getOptimalJpegThumbnailSize(supported,
                (double) size.width / size.height);
        original = mParameters.getJpegThumbnailSize();
        if (!original.equals(optimalSize)) {
            mParameters.setJpegThumbnailSize(optimalSize.width, optimalSize.height);
        }

        Log.v(TAG, "Thumbnail size is " + optimalSize.width + "x" + optimalSize.height);

        // Since changing scene mode may change supported values, set scene mode
        // first. HDR is a scene mode. To promote it in UI, it is stored in a
        // separate preference.
        String onValue = mActivity.getString(R.string.setting_on_value);
        String hdr = mPreferences.getString(CameraSettings.KEY_CAMERA_HDR,
                mActivity.getString(R.string.pref_camera_hdr_default));
        String hdrPlus = mPreferences.getString(CameraSettings.KEY_CAMERA_HDR_PLUS,
                mActivity.getString(R.string.pref_camera_hdr_plus_default));
        boolean hdrOn = onValue.equals(hdr);
        boolean hdrPlusOn = onValue.equals(hdrPlus);
        boolean doGcamModeSwitch = false;

        if (hdrPlusOn && GcamHelper.hasGcamCapture()) {
            // Kick off mode switch to gcam.
            doGcamModeSwitch = true;
        } else {
            if (hdrOn) {
                mSceneMode = CameraUtil.SCENE_MODE_HDR;
                if (!(Parameters.SCENE_MODE_AUTO).equals(mParameters.getSceneMode())
                    && !(Parameters.SCENE_MODE_HDR).equals(mParameters.getSceneMode())) {
                    mParameters.setSceneMode(Parameters.SCENE_MODE_AUTO);
                    mCameraDevice.setParameters(mParameters);
                    mParameters = mCameraDevice.getParameters();
                }
                if (mLgeHdrMode) {
                    mParameters.set(CameraSettings.KEY_SNAPCAM_HDR_MODE, CameraSettings.LGE_HDR_MODE_ON);
                    // Force enable ZSL mode for LG HDR
                    try {
                        mUI.setPreference(CameraSettings.KEY_ZSL, Parameters.ZSL_ON);
                    } catch (NullPointerException e) {
                    }
                }
            } else {
                if (mLgeHdrMode) {
                    mParameters.set(CameraSettings.KEY_SNAPCAM_HDR_MODE, CameraSettings.LGE_HDR_MODE_OFF);
                }
                mSceneMode = mPreferences.getString(
                        CameraSettings.KEY_SCENE_MODE,
                        mActivity.getString(R.string.pref_camera_scenemode_default));
            }
        }

        String refocusOn = mActivity.getString(R.string
                .pref_camera_advanced_feature_value_refocus_on);
        String optizoomOn = mActivity.getString(R.string
                .pref_camera_advanced_feature_value_optizoom_on);
        String chromaFlashOn = mActivity.getString(R.string
                .pref_camera_advanced_feature_value_chromaflash_on);

        if (CameraUtil.isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
            if (!mParameters.getSceneMode().equals(mSceneMode)) {
                mParameters.setSceneMode(mSceneMode);

                // Setting scene mode will change the settings of flash mode,
                // white balance, and focus mode. Here we read back the
                // parameters, so we can know those settings.
                mCameraDevice.setParameters(mParameters);
                mParameters = mCameraDevice.getParameters();
            }
        } else {
            if (refocusOn.equals(mSceneMode)) {
                try {
                    mUI.setPreference(CameraSettings.KEY_ADVANCED_FEATURES, refocusOn);
                } catch (NullPointerException e) {
                }
            } else if (optizoomOn.equals(mSceneMode)) {
                try {
                    mUI.setPreference(CameraSettings.KEY_ADVANCED_FEATURES, optizoomOn);
                } catch (NullPointerException e) {
                }
            } else if (chromaFlashOn.equals(mSceneMode)) {
                try {
                    mUI.setPreference(CameraSettings.KEY_ADVANCED_FEATURES, chromaFlashOn);
                    mParameters.setSceneMode(Parameters.SCENE_MODE_AUTO);
                } catch (NullPointerException e) {
                }
            } else {
                mSceneMode = mParameters.getSceneMode();
                if (mSceneMode == null) {
                    mSceneMode = Parameters.SCENE_MODE_AUTO;
                }
            }
        }

        // When shutter speed gets disabled preview needs to be restarted
        if (CameraUtil.isSupported(mParameters, CameraSettings.KEY_SNAPCAM_SHUTTER_SPEED)) {
            String shutterSpeed = mPreferences.getString(CameraSettings.KEY_SHUTTER_SPEED, null);
            if (shutterSpeed != null) {
                String oldShutterSpeed = mParameters.get(CameraSettings.KEY_SNAPCAM_SHUTTER_SPEED);
                if(!shutterSpeed.equals(oldShutterSpeed) && shutterSpeed.equals("0")
                        && mCameraState != PREVIEW_STOPPED) {
                    Log.v(TAG, "Shutter speed disabled. Restart Preview.");
                    mRestartPreview = true;
                }
            }
        }

        // For the following settings, we need to check if the settings are
        // still supported by latest driver, if not, ignore the settings.

        // Set exposure compensation
        int value = CameraSettings.readExposure(mPreferences);
        int max = mParameters.getMaxExposureCompensation();
        int min = mParameters.getMinExposureCompensation();
        if (value >= min && value <= max) {
            mParameters.setExposureCompensation(value);
        } else {
            Log.w(TAG, "invalid exposure range: " + value);
        }

        if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode) ||
                "asd".equals(mSceneMode) ||
                "sports".equals(mSceneMode)) {
            // Set flash mode.
            String flashMode;
            if (mSavedFlashMode == null) {
                flashMode = mPreferences.getString(
                    CameraSettings.KEY_FLASH_MODE,
                    mActivity.getString(R.string.pref_camera_flashmode_default));
            } else {
                flashMode = mSavedFlashMode;
            }

            List<String> supportedFlash = mParameters.getSupportedFlashModes();
            if (CameraUtil.isSupported(flashMode, supportedFlash)) {
                mParameters.setFlashMode(flashMode);
            } else {
                flashMode = mParameters.getFlashMode();
                if (flashMode == null) {
                    flashMode = mActivity.getString(
                            R.string.pref_camera_flashmode_no_flash);
                }
            }

            // Set white balance parameter.
            if ((mManual3AEnabled & MANUAL_WB) == 0) {
                String whiteBalance = mPreferences.getString(
                        CameraSettings.KEY_WHITE_BALANCE,
                        mActivity.getString(R.string.pref_camera_whitebalance_default));
                if (CameraUtil.isSupported(whiteBalance,
                        mParameters.getSupportedWhiteBalance())) {
                    mParameters.setWhiteBalance(whiteBalance);
                } else {
                    whiteBalance = mParameters.getWhiteBalance();
                    if (whiteBalance == null) {
                        whiteBalance = Parameters.WHITE_BALANCE_AUTO;
                    }
                }
            }

            // Set focus mode.
            if ((mManual3AEnabled & MANUAL_FOCUS) == 0) {
                mFocusManager.overrideFocusMode(null);
                mParameters.setFocusMode(mFocusManager.getFocusMode(false));
            }

            // Set focus time.
            mFocusManager.setFocusTime(Integer.decode(
                    mPreferences.getString(CameraSettings.KEY_FOCUS_TIME,
                    mActivity.getString(R.string.pref_camera_focustime_default))));
        } else {
            mFocusManager.overrideFocusMode(mParameters.getFocusMode());
            String flashMode = chromaFlashOn.equals(mSceneMode) ?
                    Parameters.FLASH_MODE_ON : Parameters.FLASH_MODE_OFF;
            if (CameraUtil.isSupported(flashMode,
                    mParameters.getSupportedFlashModes())) {
                mParameters.setFlashMode(flashMode);
            }
            if (CameraUtil.isSupported(Parameters.WHITE_BALANCE_AUTO,
                    mParameters.getSupportedWhiteBalance())) {
                mParameters.setWhiteBalance(Parameters.WHITE_BALANCE_AUTO);
            }
        }

        if (mContinuousFocusSupported && ApiHelper.HAS_AUTO_FOCUS_MOVE_CALLBACK) {
            updateAutoFocusMoveCallback();
        }
        //QCom related parameters updated here.
        qcomUpdateCameraParametersPreference();
        return doGcamModeSwitch;
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void updateAutoFocusMoveCallback() {
        if (mParameters.getFocusMode().equals(CameraUtil.FOCUS_MODE_CONTINUOUS_PICTURE) ||
            mParameters.getFocusMode().equals(CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE)) {
            mCameraDevice.setAutoFocusMoveCallback(mHandler,
                    (CameraAFMoveCallback) mAutoFocusMoveCallback);
        } else {
            mCameraDevice.setAutoFocusMoveCallback(null, null);
        }
    }

    // We separate the parameters into several subsets, so we can update only
    // the subsets actually need updating. The PREFERENCE set needs extra
    // locking because the preference can be changed from GLThread as well.
    private void setCameraParameters(int updateSet) {
        if (mCameraDevice == null) {
            return;
        }
        synchronized (mCameraDevice) {
            boolean doModeSwitch = false;

            if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
                updateCameraParametersInitialize();
            }

            if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
                updateCameraParametersZoom();
            }

            if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
                doModeSwitch = updateCameraParametersPreference();
            }

            CameraUtil.dumpParameters(mParameters);
            mCameraDevice.setParameters(mParameters);
            mFocusManager.setParameters(mParameters);

            // Switch to gcam module if HDR+ was selected
            if (doModeSwitch && !mIsImageCaptureIntent) {
                mHandler.sendEmptyMessage(SWITCH_TO_GCAM_MODULE);
            }
        }
    }

    // If the Camera is idle, update the parameters immediately, otherwise
    // accumulate them in mUpdateSet and update later.
    private void setCameraParametersWhenIdle(int additionalUpdateSet) {
        mUpdateSet |= additionalUpdateSet;
        if (mCameraDevice == null) {
            // We will update all the parameters when we open the device, so
            // we don't need to do anything now.
            mUpdateSet = 0;
            return;
        } else if (isCameraIdle()) {
            setCameraParameters(mUpdateSet);
             if(mRestartPreview && mCameraState != PREVIEW_STOPPED) {
                Log.v(TAG, "Restarting Preview...");
                stopPreview();
                resizeForPreviewAspectRatio();
                startPreview();
                setCameraState(IDLE);
            }
            mRestartPreview = false;
            updateCameraSettings();
            mUpdateSet = 0;
        } else {
            if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
                mHandler.sendEmptyMessageDelayed(
                        SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
            }
        }
    }

    @Override
    public boolean isCameraIdle() {
        return (mCameraState == IDLE) ||
                (mCameraState == PREVIEW_STOPPED) ||
                ((mFocusManager != null) && mFocusManager.isFocusCompleted()
                        && (mCameraState != SWITCHING_CAMERA));
    }

    @Override
    public boolean isImageCaptureIntent() {
        String action = mActivity.getIntent().getAction();
        return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)
                || CameraActivity.ACTION_IMAGE_CAPTURE_SECURE.equals(action));
    }

    private void setupCaptureParams() {
        Bundle myExtras = mActivity.getIntent().getExtras();
        if (myExtras != null) {
            mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
            mCropValue = myExtras.getString("crop");
        }
    }

    private void UpdateManualFocusSettings() {
        //dismiss all popups first, because we need to show edit dialog
        mUI.collapseCameraControls();
        final AlertDialog.Builder alert = new AlertDialog.Builder(mActivity);
        LinearLayout linear = new LinearLayout(mActivity);
        linear.setOrientation(1);
        alert.setTitle("Manual Focus Settings");
        alert.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
        {
            public void onClick(DialogInterface dialog,int id)
            {
                dialog.cancel();
            }
        });
        final TextView focusPositionText = new TextView(mActivity);
        String scaleMode = mActivity.getString(
                R.string.pref_camera_manual_focus_value_scale_mode);
        String diopterMode = mActivity.getString(
                R.string.pref_camera_manual_focus_value_diopter_mode);
        String manualFocusMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_FOCUS,
                mActivity.getString(R.string.pref_camera_manual_focus_default));

        Log.v(TAG, "manualFocusMode selected = " + manualFocusMode);
        if (manualFocusMode.equals(scaleMode)) {
            final SeekBar focusbar = new SeekBar(mActivity);
            final int minFocusPos = mParameters.getInt(CameraSettings.KEY_MIN_FOCUS_SCALE);
            final int maxFocusPos = mParameters.getInt(CameraSettings.KEY_MAX_FOCUS_SCALE);
            //update mparameters to fetch latest focus position
            mParameters = mCameraDevice.getParameters();
            int CurFocusPos = minFocusPos;

            try {
                 CurFocusPos = mParameters.getInt(CameraSettings.KEY_MANUAL_FOCUS_SCALE);
            } catch (NumberFormatException e) {
                 // Do nothing
            }

            focusbar.setProgress(CurFocusPos);
            focusPositionText.setText("Current focus position is " + CurFocusPos);

            alert.setMessage("Enter focus position in the range of " + minFocusPos
                    + " to " + maxFocusPos);

            focusbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
                @Override
                public void onStopTrackingTouch(SeekBar seekBar) {
                }

                @Override
                public void onStartTrackingTouch(SeekBar seekBar) {
                }

                @Override
                public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
                    focusPositionText.setText("Current focus position is " + progress);
                }
            });
            linear.addView(focusbar);
            linear.addView(focusPositionText);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    int focusPos = focusbar.getProgress();
                    Log.v(TAG, "Setting focus position : " + focusPos);
                    mManual3AEnabled |= MANUAL_FOCUS;
                    mParameters.setFocusMode(Parameters.FOCUS_MODE_MANUAL_POSITION);
                    mParameters.set(CameraSettings.KEY_MANUAL_FOCUS_TYPE, 2); // 2 for scale mode
                    mParameters.set(CameraSettings.KEY_MANUAL_FOCUS_POSITION, focusPos);
                    updateCommonManual3ASettings();
                    onSharedPreferenceChanged();
                }
            });
            alert.show();
        } else if (manualFocusMode.equals(diopterMode)) {
            String minFocusStr = mParameters.get(CameraSettings.KEY_MIN_FOCUS_DIOPTER);
            String maxFocusStr = mParameters.get(CameraSettings.KEY_MAX_FOCUS_DIOPTER);
            final double minFocusPos = Double.parseDouble(minFocusStr);
            final double maxFocusPos = Double.parseDouble(maxFocusStr);
            final EditText input = new EditText(mActivity);
            int floatType = InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_CLASS_NUMBER;
            input.setInputType(floatType);
            alert.setMessage("Enter focus position in the range of " + minFocusPos
                    + " to " + maxFocusPos);
            //update mparameters to fetch latest focus position
            mParameters = mCameraDevice.getParameters();
            final String CurFocusPos = mParameters.get(CameraSettings.KEY_MANUAL_FOCUS_DIOPTER);
            focusPositionText.setText("Current focus position is " +
                    (CurFocusPos != null ? CurFocusPos : minFocusStr));
            linear.addView(input);
            linear.addView(focusPositionText);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    double focuspos = 0;
                    String focusStr = input.getText().toString();
                    if (focusStr.length() > 0) {
                        try {
                            focuspos = Double.parseDouble(focusStr);
                        } catch (NumberFormatException e) {
                            Log.w(TAG, "Input foucspos " + focuspos + " is invalid");
                            focuspos = maxFocusPos + 1f;
                        }

                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid focus position",
                                Toast.LENGTH_SHORT).show();
                        return;
                    }
                    if (focuspos >= minFocusPos && focuspos <= maxFocusPos) {
                        Log.v(TAG, "Setting focus position : " + focusStr);
                        mManual3AEnabled |= MANUAL_FOCUS;
                        mParameters.setFocusMode(Parameters.FOCUS_MODE_MANUAL_POSITION);
                        //focus type 3 is diopter mode
                        mParameters.set(CameraSettings.KEY_MANUAL_FOCUS_TYPE, 3);
                        mParameters.set(CameraSettings.KEY_MANUAL_FOCUS_POSITION, focusStr);
                        updateCommonManual3ASettings();
                        onSharedPreferenceChanged();
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid focus position",
                                Toast.LENGTH_SHORT).show();
                    }
                }
            });
            alert.show();
        } else {
            mManual3AEnabled &= ~MANUAL_FOCUS;
            mParameters.setFocusMode(mFocusManager.getFocusMode(false));
            mUI.overrideSettings(CameraSettings.KEY_FOCUS_MODE, null);
            updateCommonManual3ASettings();
            onSharedPreferenceChanged();
        }
    }

    private void UpdateManualWBSettings() {
        //dismiss all popups first, because we need to show edit dialog
        mUI.collapseCameraControls();
        final AlertDialog.Builder alert = new AlertDialog.Builder(mActivity);
        LinearLayout linear = new LinearLayout(mActivity);
        linear.setOrientation(1);
        alert.setTitle("Manual White Balance Settings");
        alert.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
        {
            public void onClick(DialogInterface dialog,int id)
            {
                dialog.cancel();
            }
        });

        String cctMode = mActivity.getString(
                R.string.pref_camera_manual_wb_value_color_temperature);
        String rgbGainMode = mActivity.getString(
                R.string.pref_camera_manual_wb_value_rbgb_gains);
        String manualWBMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_WB,
                mActivity.getString(R.string.pref_camera_manual_wb_default));
        final String wbPref = mPreferences.getString(
                CameraSettings.KEY_WHITE_BALANCE,
                mActivity.getString(R.string.pref_camera_whitebalance_default));
        Log.v(TAG, "manualWBMode selected = " + manualWBMode);
        if (manualWBMode.equals(cctMode)) {
            final TextView CCTtext = new TextView(mActivity);
            final EditText CCTinput = new EditText(mActivity);
            CCTinput.setInputType(InputType.TYPE_CLASS_NUMBER);
            final int minCCT = mParameters.getInt(CameraSettings.KEY_MIN_WB_CCT);
            final int maxCCT = mParameters.getInt(CameraSettings.KEY_MAX_WB_CCT);

            //refresh camera parameters to get latest CCT value
            mParameters = mCameraDevice.getParameters();
            String currentCCT = mParameters.get(CameraSettings.KEY_MANUAL_WB_CCT);
            if (currentCCT != null) {
                CCTtext.setText("Current CCT is " + currentCCT);
            }
            alert.setMessage("Enter CCT value in the range of " + minCCT+ " to " + maxCCT);
            linear.addView(CCTinput);
            linear.addView(CCTtext);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    int newCCT = -1;
                    String cct = CCTinput.getText().toString();
                    if (cct.length() > 0) {
                        newCCT = Integer.parseInt(cct);
                    }
                    if (newCCT <= maxCCT && newCCT >= minCCT) {
                        mManual3AEnabled |= MANUAL_WB;
                        Log.v(TAG, "Setting CCT value : " + newCCT);
                        mParameters.setWhiteBalance(CameraSettings.KEY_MANUAL_WHITE_BALANCE);
                        //0 corresponds to manual CCT mode
                        mParameters.set(CameraSettings.KEY_MANUAL_WB_TYPE, 0);
                        mParameters.set(CameraSettings.KEY_MANUAL_WB_VALUE, newCCT);
                        updateCommonManual3ASettings();
                        onSharedPreferenceChanged();
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid CCT", Toast.LENGTH_SHORT)
                                .show();
                    }
                }
            });
            alert.show();
        } else if (manualWBMode.equals(rgbGainMode)) {
            final TextView RGBtext = new TextView(mActivity);
            final EditText Rinput = new EditText(mActivity);
            Rinput.setHint("Enter R gain here");
            final EditText Ginput = new EditText(mActivity);
            Ginput.setHint("Enter G gain here");
            final EditText Binput = new EditText(mActivity);
            Binput.setHint("Enter B gain here");

            int floatType = InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_CLASS_NUMBER;
            Rinput.setInputType(floatType);
            Ginput.setInputType(floatType);
            Binput.setInputType(floatType);

            String minGainStr = mParameters.get(CameraSettings.KEY_MIN_WB_GAIN);
            final double minGain = Double.parseDouble(minGainStr);
            String maxGainStr = mParameters.get(CameraSettings.KEY_MAX_WB_GAIN);
            final double maxGain = Double.parseDouble(maxGainStr);

            //refresh camera parameters to get latest WB gains
            mParameters = mCameraDevice.getParameters();
            String currentGains = mParameters.get(CameraSettings.KEY_MANUAL_WB_GAINS);
            if (currentGains != null) {
                RGBtext.setText("Current RGB gains are " + currentGains);
            }

            alert.setMessage("Enter RGB gains in the range of " + minGain
                + " to " + maxGain);
            linear.addView(Rinput);
            linear.addView(Ginput);
            linear.addView(Binput);
            linear.addView(RGBtext);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    String Rgain = Rinput.getText().toString();
                    String Ggain = Ginput.getText().toString();
                    String Bgain = Binput.getText().toString();
                    double Rgainf = -1;
                    double Ggainf = -1;
                    double Bgainf = -1;
                    if (Rgain.length() > 0 && Ggain.length() > 0 && Bgain.length() > 0) {
                        try {
                            Rgainf = Double.parseDouble(Rgain);
                            Ggainf = Double.parseDouble(Ggain);
                            Bgainf = Double.parseDouble(Bgain);
                        } catch (NumberFormatException e) {
                            Log.w(TAG, "Input RGB gain is invalid");
                            Rgainf = maxGain + 1f;
                            Ggainf = maxGain + 1f;
                            Bgainf = maxGain + 1f;
                        }
                        String RGBGain = Rgain + "," + Ggain + "," + Bgain;
                        if (Rgainf <= maxGain && Rgainf >= minGain &&
                            Ggainf <= maxGain && Ggainf >= minGain &&
                            Bgainf <= maxGain && Bgainf >= minGain) {
                            Log.v(TAG, "Setting RGB gains : " + RGBGain);
                            mManual3AEnabled |= MANUAL_WB;
                            mParameters.setWhiteBalance(CameraSettings.KEY_MANUAL_WHITE_BALANCE);
                            // 1 corresponds to manual WB gain mode
                            mParameters.set(CameraSettings.KEY_MANUAL_WB_TYPE, 1);
                            mParameters.set(CameraSettings.KEY_MANUAL_WB_VALUE, RGBGain);
                            updateCommonManual3ASettings();
                            onSharedPreferenceChanged();
                        } else {
                            RotateTextToast.makeText(mActivity, "Invalid RGB gains",
                                    Toast.LENGTH_SHORT).show();
                        }
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid RGB gains",
                                    Toast.LENGTH_SHORT).show();
                    }
                }
            });
            alert.show();
        } else {
            //reset white balance
            mManual3AEnabled &= ~MANUAL_WB;
            mUI.overrideSettings(CameraSettings.KEY_WHITE_BALANCE, null);
            updateCommonManual3ASettings();
            onSharedPreferenceChanged();
        }
    }

    private void UpdateManualExposureSettings() {
        //dismiss all popups first, because we need to show edit dialog
        mUI.collapseCameraControls();
        final AlertDialog.Builder alert = new AlertDialog.Builder(mActivity);
        LinearLayout linear = new LinearLayout(mActivity);
        linear.setOrientation(1);
        final TextView ISOtext = new TextView(mActivity);
        final EditText ISOinput = new EditText(mActivity);
        final TextView ExpTimeText = new TextView(mActivity);
        final EditText ExpTimeInput = new EditText(mActivity);
        ISOinput.setInputType(InputType.TYPE_CLASS_NUMBER);
        int floatType = InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_CLASS_NUMBER;
        ExpTimeInput.setInputType(floatType);
        alert.setTitle("Manual Exposure Settings");
        alert.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
        {
            public void onClick(DialogInterface dialog,int id)
            {
                dialog.cancel();
            }
        });

        mParameters = mCameraDevice.getParameters();
        final int minISO = mParameters.getInt(CameraSettings.KEY_MIN_ISO);
        final int maxISO = mParameters.getInt(CameraSettings.KEY_MAX_ISO);
        String isoMode = CameraSettings.getISOValue(mParameters);
        final String isoManual = CameraSettings.KEY_MANUAL_ISO;
        String currentISO = mParameters.get(CameraSettings.KEY_CURRENT_ISO);
        if (currentISO != null) {
            ISOtext.setText("Current ISO is " + currentISO);
        }

        final String minExpTime = mParameters.get(CameraSettings.KEY_MIN_EXPOSURE_TIME);
        final String maxExpTime = mParameters.get(CameraSettings.KEY_MAX_EXPOSURE_TIME);
        String currentExpTime = mParameters.get(CameraSettings.KEY_CURRENT_EXPOSURE_TIME);
        if (currentExpTime != null) {
            ExpTimeText.setText("Current exposure time is " + currentExpTime);
        }

        String isoPriority = mActivity.getString(
                R.string.pref_camera_manual_exp_value_ISO_priority);
        String expTimePriority = mActivity.getString(
                R.string.pref_camera_manual_exp_value_exptime_priority);
        String userSetting = mActivity.getString(
                R.string.pref_camera_manual_exp_value_user_setting);
        String manualExposureMode = mPreferences.getString(
                CameraSettings.KEY_MANUAL_EXPOSURE,
                mActivity.getString(R.string.pref_camera_manual_exp_default));
        Log.v(TAG, "manual Exposure Mode selected = " + manualExposureMode);
        if (manualExposureMode.equals(isoPriority)) {
            alert.setMessage("Enter ISO in the range of " + minISO + " to " + maxISO);
            linear.addView(ISOinput);
            linear.addView(ISOtext);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    int newISO = -1;
                    String iso = ISOinput.getText().toString();
                    Log.v(TAG, "string iso length " + iso.length());
                    if (iso.length() > 0) {
                        newISO = Integer.parseInt(iso);
                    }
                    if (newISO <= maxISO && newISO >= minISO) {
                        Log.v(TAG, "Setting ISO : " + newISO);
                        mManual3AEnabled |= MANUAL_EXPOSURE;
                        CameraSettings.setISOValue(mParameters, isoManual);
                        mParameters.set(CameraSettings.KEY_CONTINUOUS_ISO, newISO);
                        mParameters.set(CameraSettings.KEY_EXPOSURE_TIME, "0");
                        updateCommonManual3ASettings();
                        onSharedPreferenceChanged();
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid ISO", Toast.LENGTH_SHORT).show();
                    }
                }
            });
            alert.show();
        } else if (manualExposureMode.equals(expTimePriority)) {
            alert.setMessage("Enter exposure time in the range of " + minExpTime
                + "ms to " + maxExpTime + "ms");
            linear.addView(ExpTimeInput);
            linear.addView(ExpTimeText);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    double newExpTime = -1;
                    String expTime = ExpTimeInput.getText().toString();
                    if (expTime.length() > 0) {
                        try {
                            newExpTime = Double.parseDouble(expTime);
                        } catch (NumberFormatException e) {
                            Log.w(TAG, "Input expTime " + expTime + " is invalid");
                            newExpTime = Double.parseDouble(maxExpTime) + 1f;
                        }
                    }
                    if (newExpTime <= Double.parseDouble(maxExpTime) &&
                        newExpTime >= Double.parseDouble(minExpTime)) {
                        Log.v(TAG, "Setting Exposure time : " + newExpTime);
                        mManual3AEnabled |= MANUAL_EXPOSURE;
                        mParameters.set(CameraSettings.KEY_EXPOSURE_TIME, expTime);
                        CameraSettings.setISOValue(mParameters, Parameters.ISO_AUTO);
                        mUI.setPreference(CameraSettings.KEY_ISO, Parameters.ISO_AUTO);
                        mUI.overrideSettings(CameraSettings.KEY_ISO, null);
                        updateCommonManual3ASettings();
                        onSharedPreferenceChanged();
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid exposure time",
                                Toast.LENGTH_SHORT).show();
                    }
                }
            });
            alert.show();
        } else if (manualExposureMode.equals(userSetting)) {
            alert.setMessage("Full manual mode - Enter both ISO and Exposure Time");
            final TextView ISORangeText = new TextView(mActivity);
            final TextView ExpTimeRangeText = new TextView(mActivity);
            ISORangeText.setText("Enter ISO in the range of " + minISO + " to " + maxISO);
            ExpTimeRangeText.setText("Enter exposure time in the range of " + minExpTime
                    + "ms to " + maxExpTime + "ms");
            linear.addView(ISORangeText);
            linear.addView(ISOinput);
            linear.addView(ISOtext);
            linear.addView(ExpTimeRangeText);
            linear.addView(ExpTimeInput);
            linear.addView(ExpTimeText);
            alert.setView(linear);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog,int id)
                {
                    int newISO = -1;
                    String iso = ISOinput.getText().toString();
                    Log.v(TAG, "string iso length " + iso.length());
                    if (iso.length() > 0) {
                        newISO = Integer.parseInt(iso);
                    }
                    double newExpTime = -1;
                    String expTime = ExpTimeInput.getText().toString();
                    if (expTime.length() > 0) {
                        try {
                            newExpTime = Double.parseDouble(expTime);
                        } catch (NumberFormatException e) {
                            Log.w(TAG, "input newExpTime " + newExpTime + " is invalid");
                            newExpTime = Double.parseDouble(maxExpTime) + 1f;
                        }

                    }
                    if (newISO <= maxISO && newISO >= minISO &&
                        newExpTime <= Double.parseDouble(maxExpTime) &&
                        newExpTime >= Double.parseDouble(minExpTime)) {
                        mManual3AEnabled |= MANUAL_EXPOSURE;
                        Log.v(TAG, "Setting ISO : " + newISO);
                        CameraSettings.setISOValue(mParameters, isoManual);
                        mParameters.set(CameraSettings.KEY_CONTINUOUS_ISO, newISO);
                        Log.v(TAG, "Setting Exposure time : " + newExpTime);
                        mParameters.set(CameraSettings.KEY_EXPOSURE_TIME, expTime);
                        updateCommonManual3ASettings();
                        onSharedPreferenceChanged();
                    } else {
                        RotateTextToast.makeText(mActivity, "Invalid input", Toast.LENGTH_SHORT)
                                .show();
                    }
                }
            });
            alert.show();
        } else {
            mManual3AEnabled &= ~MANUAL_EXPOSURE;
            //auto exposure mode - reset both exposure time and ISO
            mParameters.set(CameraSettings.KEY_EXPOSURE_TIME, "0");
            mUI.overrideSettings(CameraSettings.KEY_ISO, null);
            updateCommonManual3ASettings();
            onSharedPreferenceChanged();
        }
    }

    // Return true if the preference has the specified key but not the value.
    private static boolean notSame(ListPreference pref, String key, String value) {
        return (key.equals(pref.getKey()) && !value.equals(pref.getValue()));
    }

    @Override
    public void onSharedPreferenceChanged(ListPreference pref) {
        // ignore the events after "onPause()"
        if (mPaused) return;

        //filter off unsupported settings
        final String settingOff = mActivity.getString(R.string.setting_off_value);
        final String settingOn = mActivity.getString(R.string.setting_on_value);
        final String zsl = mActivity.getString(R.string.pref_camera_zsl_default);
        if (!CameraSettings.isZSLHDRSupported(mParameters)) {
            //HDR internally uses AE-bracketing. Disable both if not supported.
            if (notSame(pref, CameraSettings.KEY_CAMERA_HDR, settingOff) ||
                notSame(pref, CameraSettings.KEY_AE_BRACKET_HDR, settingOff)) {
                mUI.setPreference(CameraSettings.KEY_ZSL,settingOff);
            } else if (notSame(pref,CameraSettings.KEY_ZSL,settingOff)) {
                mUI.setPreference(CameraSettings.KEY_CAMERA_HDR, settingOff);
                mUI.setPreference(CameraSettings.KEY_AE_BRACKET_HDR, settingOff);
            } else if (notSame(pref, CameraSettings.KEY_CAMERA_HDR, settingOn) ||
                notSame(pref, CameraSettings.KEY_AE_BRACKET_HDR, settingOn)) {
                mUI.setPreference(CameraSettings.KEY_ZSL, zsl);
            }
        }

        if(CameraSettings.KEY_MANUAL_EXPOSURE.equals(pref.getKey())) {
            UpdateManualExposureSettings();
            return;
        }
        if (CameraSettings.KEY_MANUAL_WB.equals(pref.getKey())) {
            UpdateManualWBSettings();
            return;
        }
        if (CameraSettings.KEY_MANUAL_FOCUS.equals(pref.getKey())) {
            UpdateManualFocusSettings();
            return;
        }

        if (CameraSettings.KEY_CAMERA_SAVEPATH.equals(pref.getKey())) {
            Storage.setSaveSDCard(
                    mPreferences.getString(CameraSettings.KEY_CAMERA_SAVEPATH, "0").equals("1"));
            mActivity.updateStorageSpaceAndHint();
            updateRemainingPhotos();
        }

        if (!CameraSettings.hasChromaFlashScene(mActivity) &&
                CameraSettings.KEY_QC_CHROMA_FLASH.equals(pref.getKey())) {
            mUI.setPreference(CameraSettings.KEY_ADVANCED_FEATURES, pref.getValue());
        }

        //call generic onSharedPreferenceChanged
        onSharedPreferenceChanged();
    }

    @Override
    public void onSharedPreferenceChanged() {
        // ignore the events after "onPause()"
        if (mPaused) return;

        boolean recordLocation = RecordLocationPreference.get(
                mPreferences, mContentResolver);
        mLocationManager.recordLocation(recordLocation);
        if(needRestart()){
            Log.v(TAG, "Restarting Preview... Camera Mode Changed");
            setCameraParameters(UPDATE_PARAM_PREFERENCE);
            stopPreview();
            startPreview();
            setCameraState(IDLE);
            mRestartPreview = false;
        }
        /* Check if the PhotoUI Menu is initialized or not. This
         * should be initialized during onCameraOpen() which should
         * have been called by now. But for some reason that is not
         * executed till now, then schedule these functionality for
         * later by posting a message to the handler */
        if (mUI.mMenuInitialized) {
            setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
            mActivity.initPowerShutter(mPreferences);
            mActivity.initMaxBrightness(mPreferences);
        } else {
            mHandler.sendEmptyMessage(SET_PHOTO_UI_PARAMS);
        }
        resizeForPreviewAspectRatio();
    }

    @Override
    public void onCameraPickerClicked(int cameraId) {
        if (mPaused || mPendingSwitchCameraId != -1) return;

        mPendingSwitchCameraId = cameraId;

        Log.v(TAG, "Start to switch camera. cameraId=" + cameraId);
        // We need to keep a preview frame for the animation before
        // releasing the camera. This will trigger onPreviewTextureCopied.
        //TODO: Need to animate the camera switch
        switchCamera();
    }

    // Preview texture has been copied. Now camera can be released and the
    // animation can be started.
    @Override
    public void onPreviewTextureCopied() {
        mHandler.sendEmptyMessage(SWITCH_CAMERA);
    }

    @Override
    public void onCaptureTextureCopied() {
    }

    @Override
    public void onUserInteraction() {
        if (!mActivity.isFinishing()) keepScreenOnAwhile();
    }

    private void resetScreenOn() {
        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
        mActivity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }

    private void keepScreenOnAwhile() {
        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
        mActivity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
    }

    @Override
    public void onOverriddenPreferencesClicked() {
        if (mPaused) return;
        mUI.showPreferencesToast();
    }

    private void showTapToFocusToast() {
        // TODO: Use a toast?
        new RotateTextToast(mActivity, R.string.tap_to_focus, 0).show();
        // Clear the preference.
        Editor editor = mPreferences.edit();
        editor.putBoolean(CameraSettings.KEY_CAMERA_FIRST_USE_HINT_SHOWN, false);
        editor.apply();
    }

    private void initializeCapabilities() {
        mFocusAreaSupported = CameraUtil.isFocusAreaSupported(mInitialParams);
        mMeteringAreaSupported = CameraUtil.isMeteringAreaSupported(mInitialParams);
        mAeLockSupported = CameraUtil.isAutoExposureLockSupported(mInitialParams);
        mAwbLockSupported = CameraUtil.isAutoWhiteBalanceLockSupported(mInitialParams);

        if (mInitialParams.getSupportedFocusModes().contains(CameraUtil.FOCUS_MODE_CONTINUOUS_PICTURE) ||
            mInitialParams.getSupportedFocusModes().contains(CameraUtil.FOCUS_MODE_MW_CONTINUOUS_PICTURE)) {
            mContinuousFocusSupported = true;
        } else {
            mContinuousFocusSupported = false;
        }
    }

    @Override
    public void onCountDownFinished() {
        mSnapshotOnIdle = false;
        initiateSnap();
        mFocusManager.onShutterUp();
        mUI.overrideSettings(CameraSettings.KEY_ZSL, null);
        mUI.showUIAfterCountDown();
    }

    @Override
    public void onShowSwitcherPopup() {
        mUI.onShowSwitcherPopup();
    }

    @Override
    public int onZoomChanged(int index) {
        // Not useful to change zoom value when the activity is paused.
        if (mPaused) return index;
        mZoomValue = index;
        if (mParameters == null || mCameraDevice == null) return index;
        // Set zoom parameters asynchronously
        synchronized (mCameraDevice) {
            mParameters.setZoom(mZoomValue);
            mCameraDevice.setParameters(mParameters);
            Parameters p = mCameraDevice.getParameters();
            if (p != null) return p.getZoom();
        }
        return index;
    }

    @Override
    public int getCameraState() {
        return mCameraState;
    }

    @Override
    public void onQueueStatus(boolean full) {
        mUI.enableShutter(!full);
    }

    @Override
    public void onMediaSaveServiceConnected(MediaSaveService s) {
        // We set the listener only when both service and shutterbutton
        // are initialized.
        if (mFirstTimeInitialized) {
            s.setListener(this);
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        int type = event.sensor.getType();
        float[] data;
        if (type == Sensor.TYPE_ACCELEROMETER) {
            data = mGData;
        } else if (type == Sensor.TYPE_MAGNETIC_FIELD) {
            data = mMData;
        } else {
            // we should not be here.
            return;
        }
        for (int i = 0; i < 3 ; i++) {
            data[i] = event.values[i];
        }
        float[] orientation = new float[3];
        SensorManager.getRotationMatrix(mR, null, mGData, mMData);
        SensorManager.getOrientation(mR, orientation);
        mHeading = (int) (orientation[0] * 180f / Math.PI) % 360;
        if (mHeading < 0) {
            mHeading += 360;
        }
    }
    @Override
    public void onPreviewFocusChanged(boolean previewFocused) {
        mUI.onPreviewFocusChanged(previewFocused);
    }
    // TODO: Delete this function after old camera code is removed
    @Override
    public void onRestorePreferencesClicked() {}

/*
 * Provide a mapping for Jpeg encoding quality levels
 * from String representation to numeric representation.
 */
    @Override
    public boolean arePreviewControlsVisible() {
        return mUI.arePreviewControlsVisible();
    }

    // For debugging only.
    public void setDebugUri(Uri uri) {
        mDebugUri = uri;
    }

    // For debugging only.
    private void saveToDebugUri(byte[] data) {
        if (mDebugUri != null) {
            OutputStream outputStream = null;
            try {
                outputStream = mContentResolver.openOutputStream(mDebugUri);
                outputStream.write(data);
                outputStream.close();
            } catch (IOException e) {
                Log.e(TAG, "Exception while writing debug jpeg file", e);
            } finally {
                CameraUtil.closeSilently(outputStream);
            }
        }
    }

    public boolean isRefocus() {
        return mLastPhotoTakenWithRefocus;
    }

    public boolean isLongshotDone() {
        return ((mCameraState == LONGSHOT) && (mLongshotSnapNum == mReceivedSnapNum) &&
                !mLongshotActive);
    }
}