Camera.java revision 9e76e8d6eec20739203d213ead1fe1aab3b939ae 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.camera;
18
19import com.android.camera.gallery.IImage;
20import com.android.camera.gallery.IImageList;
21import com.android.camera.ui.CameraHeadUpDisplay;
22import com.android.camera.ui.CameraPicker;
23import com.android.camera.ui.ControlPanel;
24import com.android.camera.ui.FocusRectangle;
25import com.android.camera.ui.GLRootView;
26import com.android.camera.ui.HeadUpDisplay;
27import com.android.camera.ui.ZoomControllerListener;
28import com.android.camera.ui.ZoomPicker;
29
30import android.app.Activity;
31import android.content.ActivityNotFoundException;
32import android.content.BroadcastReceiver;
33import android.content.ContentProviderClient;
34import android.content.ContentResolver;
35import android.content.Context;
36import android.content.Intent;
37import android.content.IntentFilter;
38import android.content.SharedPreferences.Editor;
39import android.content.res.Configuration;
40import android.content.res.Resources;
41import android.database.Cursor;
42import android.graphics.Bitmap;
43import android.graphics.BitmapFactory;
44import android.hardware.Camera.CameraInfo;
45import android.hardware.Camera.Parameters;
46import android.hardware.Camera.PictureCallback;
47import android.hardware.Camera.Size;
48import android.location.Location;
49import android.location.LocationManager;
50import android.location.LocationProvider;
51import android.media.AudioManager;
52import android.media.ToneGenerator;
53import android.net.Uri;
54import android.os.Build;
55import android.os.Bundle;
56import android.os.Environment;
57import android.os.Handler;
58import android.os.Looper;
59import android.os.Message;
60import android.os.MessageQueue;
61import android.provider.MediaStore;
62import android.provider.Settings;
63import android.provider.MediaStore.Images.ImageColumns;
64import android.provider.MediaStore.Images.Media;
65import android.util.Log;
66import android.view.GestureDetector;
67import android.view.KeyEvent;
68import android.view.LayoutInflater;
69import android.view.Menu;
70import android.view.MenuItem;
71import android.view.MotionEvent;
72import android.view.OrientationEventListener;
73import android.view.SurfaceHolder;
74import android.view.SurfaceView;
75import android.view.View;
76import android.view.ViewGroup;
77import android.view.ViewStub;
78import android.view.Window;
79import android.view.WindowManager;
80import android.view.MenuItem.OnMenuItemClickListener;
81
82import java.io.File;
83import java.io.FileNotFoundException;
84import java.io.FileOutputStream;
85import java.io.IOException;
86import java.io.OutputStream;
87import java.text.SimpleDateFormat;
88import java.util.ArrayList;
89import java.util.Collections;
90import java.util.Date;
91import java.util.HashMap;
92import java.util.List;
93
94/** The Camera activity which can preview and take pictures. */
95public class Camera extends NoSearchActivity implements View.OnClickListener,
96        ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback,
97        Switcher.OnSwitchListener {
98
99    private static final String TAG = "camera";
100
101    private static final int CROP_MSG = 1;
102    private static final int FIRST_TIME_INIT = 2;
103    private static final int RESTART_PREVIEW = 3;
104    private static final int CLEAR_SCREEN_DELAY = 4;
105    private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 5;
106
107    // The subset of parameters we need to update in setCameraParameters().
108    private static final int UPDATE_PARAM_INITIALIZE = 1;
109    private static final int UPDATE_PARAM_ZOOM = 2;
110    private static final int UPDATE_PARAM_PREFERENCE = 4;
111    private static final int UPDATE_PARAM_ALL = -1;
112
113    // When setCameraParametersWhenIdle() is called, we accumulate the subsets
114    // needed to be updated in mUpdateSet.
115    private int mUpdateSet;
116
117    // The brightness settings used when it is set to automatic in the system.
118    // The reason why it is set to 0.7 is just because 1.0 is too bright.
119    private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f;
120
121    private static final int SCREEN_DELAY = 2 * 60 * 1000;
122    private static final int FOCUS_BEEP_VOLUME = 100;
123
124    private static final int ZOOM_STOPPED = 0;
125    private static final int ZOOM_START = 1;
126    private static final int ZOOM_STOPPING = 2;
127
128    private int mZoomState = ZOOM_STOPPED;
129    private boolean mSmoothZoomSupported = false;
130    private int mZoomValue;  // The current zoom value.
131    private int mZoomMax;
132    private int mTargetZoomValue;
133    private ZoomPicker mZoomPicker;
134
135    private Parameters mParameters;
136    private Parameters mInitialParams;
137
138    private MyOrientationEventListener mOrientationListener;
139    // The device orientation in degrees. Default is unknown.
140    private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN;
141    // The orientation compensation for icons and thumbnails.
142    private int mOrientationCompensation = 0;
143    private ComboPreferences mPreferences;
144
145    private static final int IDLE = 1;
146    private static final int SNAPSHOT_IN_PROGRESS = 2;
147
148    private static final boolean SWITCH_CAMERA = true;
149    private static final boolean SWITCH_VIDEO = false;
150
151    private int mStatus = IDLE;
152    private static final String sTempCropFilename = "crop-temp";
153
154    private android.hardware.Camera mCameraDevice;
155    private ContentProviderClient mMediaProviderClient;
156    private SurfaceView mSurfaceView;
157    private SurfaceHolder mSurfaceHolder = null;
158    private ShutterButton mShutterButton;
159    private FocusRectangle mFocusRectangle;
160    private ToneGenerator mFocusToneGenerator;
161    private GestureDetector mPopupGestureDetector;
162    private SwitcherSet mSwitcher;
163    private boolean mStartPreviewFail = false;
164    private View mIndicatorWheel;
165
166    private GLRootView mGLRootView;
167
168    // The last captured picture.
169    private RotateImageView mThumbnailButton;
170
171    // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true.
172    private String mCropValue;
173    private Uri mSaveUri;
174
175    private ImageCapture mImageCapture = null;
176
177    // GPS on-screen indicator
178    private View mGpsNoSignalView;
179    private View mGpsHasSignalView;
180
181    // Front/Back camera pciker for xlarge layout
182    private CameraPicker mCameraPicker;
183
184    /**
185     * An unpublished intent flag requesting to return as soon as capturing
186     * is completed.
187     *
188     * TODO: consider publishing by moving into MediaStore.
189     */
190    private final static String EXTRA_QUICK_CAPTURE =
191            "android.intent.extra.quickCapture";
192
193    private boolean mPreviewing;
194    private boolean mPausing;
195    private boolean mFirstTimeInitialized;
196    private boolean mIsImageCaptureIntent;
197    private boolean mRecordLocation;
198
199    private static final int FOCUS_NOT_STARTED = 0;
200    private static final int FOCUSING = 1;
201    private static final int FOCUSING_SNAP_ON_FINISH = 2;
202    private static final int FOCUS_SUCCESS = 3;
203    private static final int FOCUS_FAIL = 4;
204    private int mFocusState = FOCUS_NOT_STARTED;
205
206    private ContentResolver mContentResolver;
207    private boolean mDidRegister = false;
208
209    private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>();
210
211    private LocationManager mLocationManager = null;
212
213    private final ShutterCallback mShutterCallback = new ShutterCallback();
214    private final PostViewPictureCallback mPostViewPictureCallback =
215            new PostViewPictureCallback();
216    private final RawPictureCallback mRawPictureCallback =
217            new RawPictureCallback();
218    private final AutoFocusCallback mAutoFocusCallback =
219            new AutoFocusCallback();
220    private final ZoomListener mZoomListener = new ZoomListener();
221    private final CameraErrorCallback mErrorCallback = new CameraErrorCallback();
222
223    private long mFocusStartTime;
224    private long mFocusCallbackTime;
225    private long mCaptureStartTime;
226    private long mShutterCallbackTime;
227    private long mPostViewPictureCallbackTime;
228    private long mRawPictureCallbackTime;
229    private long mJpegPictureCallbackTime;
230    private int mPicturesRemaining;
231
232    // These latency time are for the CameraLatency test.
233    public long mAutoFocusTime;
234    public long mShutterLag;
235    public long mShutterToPictureDisplayedTime;
236    public long mPictureDisplayedToJpegCallbackTime;
237    public long mJpegCallbackFinishTime;
238
239    // Focus mode. Options are pref_camera_focusmode_entryvalues.
240    private String mFocusMode;
241    private String mSceneMode;
242
243    private final Handler mHandler = new MainHandler();
244    // xlarge devices use control panel. Other devices use head-up display.
245    private CameraHeadUpDisplay mHeadUpDisplay;
246    private ControlPanel mControlPanel;
247    private PreferenceGroup mPreferenceGroup;
248
249    // multiple cameras support
250    private int mNumberOfCameras;
251    private int mCameraId;
252    private int mFrontCameraId;
253    private int mBackCameraId;
254
255    private boolean mQuickCapture;
256
257    /**
258     * This Handler is used to post message back onto the main thread of the
259     * application
260     */
261    private class MainHandler extends Handler {
262        @Override
263        public void handleMessage(Message msg) {
264            switch (msg.what) {
265                case RESTART_PREVIEW: {
266                    restartPreview();
267                    if (mJpegPictureCallbackTime != 0) {
268                        long now = System.currentTimeMillis();
269                        mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
270                        Log.v(TAG, "mJpegCallbackFinishTime = "
271                                + mJpegCallbackFinishTime + "ms");
272                        mJpegPictureCallbackTime = 0;
273                    }
274                    break;
275                }
276
277                case CLEAR_SCREEN_DELAY: {
278                    getWindow().clearFlags(
279                            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
280                    break;
281                }
282
283                case FIRST_TIME_INIT: {
284                    initializeFirstTime();
285                    break;
286                }
287
288                case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
289                    setCameraParametersWhenIdle(0);
290                    break;
291                }
292            }
293        }
294    }
295
296    private void resetExposureCompensation() {
297        String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
298                CameraSettings.EXPOSURE_DEFAULT_VALUE);
299        if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
300            Editor editor = mPreferences.edit();
301            editor.putString(CameraSettings.KEY_EXPOSURE, "0");
302            editor.apply();
303            if (mHeadUpDisplay != null) {
304                mHeadUpDisplay.reloadPreferences();
305            }
306        }
307    }
308
309    private void keepMediaProviderInstance() {
310        // We want to keep a reference to MediaProvider in camera's lifecycle.
311        // TODO: Utilize mMediaProviderClient instance to replace
312        // ContentResolver calls.
313        if (mMediaProviderClient == null) {
314            mMediaProviderClient = getContentResolver()
315                    .acquireContentProviderClient(MediaStore.AUTHORITY);
316        }
317    }
318
319    // Snapshots can only be taken after this is called. It should be called
320    // once only. We could have done these things in onCreate() but we want to
321    // make preview screen appear as soon as possible.
322    private void initializeFirstTime() {
323        if (mFirstTimeInitialized) return;
324
325        // Create orientation listenter. This should be done first because it
326        // takes some time to get first orientation.
327        mOrientationListener = new MyOrientationEventListener(Camera.this);
328        mOrientationListener.enable();
329
330        // Initialize location sevice.
331        mLocationManager = (LocationManager)
332                getSystemService(Context.LOCATION_SERVICE);
333        mRecordLocation = RecordLocationPreference.get(
334                mPreferences, getContentResolver());
335        initGpsOnScreenIndicator();
336        if (mRecordLocation) startReceivingLocationUpdates();
337
338        keepMediaProviderInstance();
339        checkStorage();
340
341        // Initialize last picture button.
342        mContentResolver = getContentResolver();
343        if (!mIsImageCaptureIntent)  {
344            findViewById(R.id.camera_switch).setOnClickListener(this);
345            initThumbnailButton();
346        }
347
348        // Initialize shutter button.
349        mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
350        mShutterButton.setOnShutterButtonListener(this);
351        mShutterButton.setVisibility(View.VISIBLE);
352
353        mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle);
354        updateFocusIndicator();
355
356        initializeScreenBrightness();
357        installIntentFilter();
358        initializeFocusTone();
359        initializeZoom();
360        // xlarge devices use control panel. Other devices use head-up display.
361        if (mControlPanel == null) {
362            mHeadUpDisplay = new CameraHeadUpDisplay(this);
363            mHeadUpDisplay.setListener(new MyHeadUpDisplayListener());
364            initializeHeadUpDisplay();
365        }
366        mFirstTimeInitialized = true;
367        changeHeadUpDisplayState();
368        addIdleHandler();
369    }
370
371    private void addIdleHandler() {
372        MessageQueue queue = Looper.myQueue();
373        queue.addIdleHandler(new MessageQueue.IdleHandler() {
374            public boolean queueIdle() {
375                ImageManager.ensureOSXCompatibleFolder();
376                return false;
377            }
378        });
379    }
380
381    private void initThumbnailButton() {
382        mThumbnailButton =
383                (RotateImageView) findViewById(R.id.review_thumbnail);
384        if (mThumbnailButton != null) {
385            mThumbnailButton.setVisibility(View.VISIBLE);
386            mThumbnailButton.setOnClickListener(this);
387            mThumbnailButton.loadData(ImageManager.getLastImageThumbPath());
388            updateThumbnailButton();
389        }
390    }
391
392    private void updateThumbnailButton() {
393        if (mThumbnailButton == null) return;
394        // Update last image if URI is invalid and the storage is ready.
395        if (!mThumbnailButton.isUriValid() && mPicturesRemaining >= 0) {
396            IImageList list = ImageManager.makeImageList(
397                mContentResolver,
398                dataLocation(),
399                ImageManager.INCLUDE_IMAGES,
400                ImageManager.SORT_ASCENDING,
401                ImageManager.CAMERA_IMAGE_BUCKET_ID);
402            int count = list.getCount();
403            if (count > 0) {
404                IImage image = list.getImageAt(count - 1);
405                Uri uri = image.fullSizeImageUri();
406                mThumbnailButton.setData(uri, image.miniThumbBitmap());
407            } else {
408                mThumbnailButton.setData(null, null);
409            }
410            list.close();
411        }
412    }
413
414    private void setLastPictureThumb(byte[] data, int degree, Uri uri) {
415        if (mThumbnailButton == null) return;
416        BitmapFactory.Options options = new BitmapFactory.Options();
417        options.inSampleSize = 16;
418        Bitmap lastPictureThumb =
419                BitmapFactory.decodeByteArray(data, 0, data.length, options);
420        lastPictureThumb = Util.rotate(lastPictureThumb, degree);
421        mThumbnailButton.setData(uri, lastPictureThumb);
422    }
423
424    // If the activity is paused and resumed, this method will be called in
425    // onResume.
426    private void initializeSecondTime() {
427        // Start orientation listener as soon as possible because it takes
428        // some time to get first orientation.
429        mOrientationListener.enable();
430
431        // Start location update if needed.
432        mRecordLocation = RecordLocationPreference.get(
433                mPreferences, getContentResolver());
434        if (mRecordLocation) startReceivingLocationUpdates();
435
436        installIntentFilter();
437        initializeFocusTone();
438        initializeZoom();
439        changeHeadUpDisplayState();
440
441        keepMediaProviderInstance();
442        checkStorage();
443
444        if (!mIsImageCaptureIntent) {
445            updateThumbnailButton();
446        }
447    }
448
449    private void initializeZoom() {
450        if (!mParameters.isZoomSupported()) return;
451
452        mZoomMax = mParameters.getMaxZoom();
453        mSmoothZoomSupported = mParameters.isSmoothZoomSupported();
454        if (mZoomPicker != null) {
455            mZoomPicker.setZoomRatios(getZoomRatios());
456            mZoomPicker.setOnZoomChangeListener(
457                    new ZoomPicker.OnZoomChangedListener() {
458                public void onZoomChanged(int index) {
459                    onZoomValueChanged(index);
460                }
461            });
462        }
463
464        mCameraDevice.setZoomChangeListener(mZoomListener);
465    }
466
467    private void onZoomValueChanged(int index) {
468        if (mSmoothZoomSupported) {
469            if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) {
470                mTargetZoomValue = index;
471                if (mZoomState == ZOOM_START) {
472                    mZoomState = ZOOM_STOPPING;
473                    mCameraDevice.stopSmoothZoom();
474                }
475            } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) {
476                mTargetZoomValue = index;
477                mCameraDevice.startSmoothZoom(index);
478                mZoomState = ZOOM_START;
479            }
480        } else {
481            mZoomValue = index;
482            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
483        }
484    }
485
486    private float[] getZoomRatios() {
487        if(!mParameters.isZoomSupported()) return null;
488        List<Integer> zoomRatios = mParameters.getZoomRatios();
489        float result[] = new float[zoomRatios.size()];
490        for (int i = 0, n = result.length; i < n; ++i) {
491            result[i] = (float) zoomRatios.get(i) / 100f;
492        }
493        return result;
494    }
495
496    private int mPopupLocations[] = new int[2];
497    private class PopupGestureListener extends
498            GestureDetector.SimpleOnGestureListener {
499        public boolean onDown(MotionEvent e) {
500            // Check if the popup window is visible.
501            View v = mControlPanel.getActivePopupWindow();
502            if (v == null) return false;
503
504            int x = Math.round(e.getX());
505            int y = Math.round(e.getY());
506
507            // Dismiss the popup window if users touch on the outside.
508            v.getLocationOnScreen(mPopupLocations);
509            if (x < mPopupLocations[0] || x > mPopupLocations[0] + v.getWidth()
510                    || y < mPopupLocations[1] || y > mPopupLocations[1] + v.getHeight()) {
511                mControlPanel.dismissSettingPopup();
512                // Let event fall through.
513            }
514            return false;
515        }
516    }
517
518    @Override
519    public boolean dispatchTouchEvent(MotionEvent m) {
520        // Check if the popup window should be dismissed first.
521        if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) {
522            return true;
523        }
524
525        return super.dispatchTouchEvent(m);
526    }
527
528    LocationListener [] mLocationListeners = new LocationListener[] {
529            new LocationListener(LocationManager.GPS_PROVIDER),
530            new LocationListener(LocationManager.NETWORK_PROVIDER)
531    };
532
533    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
534        @Override
535        public void onReceive(Context context, Intent intent) {
536            String action = intent.getAction();
537            if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
538                    || action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
539                    || action.equals(Intent.ACTION_MEDIA_CHECKING)) {
540                checkStorage();
541            } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
542                checkStorage();
543                if (!mIsImageCaptureIntent)  {
544                    updateThumbnailButton();
545                }
546            }
547        }
548    };
549
550    private void initializeCameraPicker() {
551        mCameraPicker = (CameraPicker) findViewById(R.id.camera_picker);
552        if (mCameraPicker != null) {
553            mCameraPicker.setImageResource(R.drawable.camera_toggle);
554            ListPreference pref = mPreferenceGroup.findPreference(
555                    CameraSettings.KEY_CAMERA_ID);
556            if (pref != null) {
557                mCameraPicker.initialize(pref);
558                mCameraPicker.setListener(new MyCameraPickerListener());
559            }
560        }
561    }
562
563    private void initGpsOnScreenIndicator() {
564        mGpsNoSignalView = findViewById(R.id.onscreen_gps_indicator_no_signal);
565        mGpsHasSignalView = findViewById(R.id.onscreen_gps_indicator_on);
566    }
567
568    private void showGpsOnScreenIndicator(boolean hasSignal) {
569        if (hasSignal) {
570            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
571            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.VISIBLE);
572        } else {
573            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.VISIBLE);
574            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
575        }
576    }
577
578    private void hideGpsOnScreenIndicator() {
579        if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
580        if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
581    }
582
583    private class LocationListener
584            implements android.location.LocationListener {
585        Location mLastLocation;
586        boolean mValid = false;
587        String mProvider;
588
589        public LocationListener(String provider) {
590            mProvider = provider;
591            mLastLocation = new Location(mProvider);
592        }
593
594        public void onLocationChanged(Location newLocation) {
595            if (newLocation.getLatitude() == 0.0
596                    && newLocation.getLongitude() == 0.0) {
597                // Hack to filter out 0.0,0.0 locations
598                return;
599            }
600            // If GPS is available before start camera, we won't get status
601            // update so update GPS indicator when we receive data.
602            if (mRecordLocation
603                    && LocationManager.GPS_PROVIDER.equals(mProvider)) {
604                if (mHeadUpDisplay != null) {
605                    mHeadUpDisplay.setGpsHasSignal(true);
606                }
607                showGpsOnScreenIndicator(true);
608            }
609            mLastLocation.set(newLocation);
610            mValid = true;
611        }
612
613        public void onProviderEnabled(String provider) {
614        }
615
616        public void onProviderDisabled(String provider) {
617            mValid = false;
618        }
619
620        public void onStatusChanged(
621                String provider, int status, Bundle extras) {
622            switch(status) {
623                case LocationProvider.OUT_OF_SERVICE:
624                case LocationProvider.TEMPORARILY_UNAVAILABLE: {
625                    mValid = false;
626                    if (mRecordLocation &&
627                            LocationManager.GPS_PROVIDER.equals(provider)) {
628                        if (mHeadUpDisplay != null) {
629                            mHeadUpDisplay.setGpsHasSignal(false);
630                        }
631                        showGpsOnScreenIndicator(false);
632                    }
633                    break;
634                }
635            }
636        }
637
638        public Location current() {
639            return mValid ? mLastLocation : null;
640        }
641    }
642
643    private final class ShutterCallback
644            implements android.hardware.Camera.ShutterCallback {
645        public void onShutter() {
646            mShutterCallbackTime = System.currentTimeMillis();
647            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
648            Log.v(TAG, "mShutterLag = " + mShutterLag + "ms");
649            clearFocusState();
650        }
651    }
652
653    private final class PostViewPictureCallback implements PictureCallback {
654        public void onPictureTaken(
655                byte [] data, android.hardware.Camera camera) {
656            mPostViewPictureCallbackTime = System.currentTimeMillis();
657            Log.v(TAG, "mShutterToPostViewCallbackTime = "
658                    + (mPostViewPictureCallbackTime - mShutterCallbackTime)
659                    + "ms");
660        }
661    }
662
663    private final class RawPictureCallback implements PictureCallback {
664        public void onPictureTaken(
665                byte [] rawData, android.hardware.Camera camera) {
666            mRawPictureCallbackTime = System.currentTimeMillis();
667            Log.v(TAG, "mShutterToRawCallbackTime = "
668                    + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
669        }
670    }
671
672    private final class JpegPictureCallback implements PictureCallback {
673        Location mLocation;
674
675        public JpegPictureCallback(Location loc) {
676            mLocation = loc;
677        }
678
679        public void onPictureTaken(
680                final byte [] jpegData, final android.hardware.Camera camera) {
681            if (mPausing) {
682                return;
683            }
684
685            mJpegPictureCallbackTime = System.currentTimeMillis();
686            // If postview callback has arrived, the captured image is displayed
687            // in postview callback. If not, the captured image is displayed in
688            // raw picture callback.
689            if (mPostViewPictureCallbackTime != 0) {
690                mShutterToPictureDisplayedTime =
691                        mPostViewPictureCallbackTime - mShutterCallbackTime;
692                mPictureDisplayedToJpegCallbackTime =
693                        mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
694            } else {
695                mShutterToPictureDisplayedTime =
696                        mRawPictureCallbackTime - mShutterCallbackTime;
697                mPictureDisplayedToJpegCallbackTime =
698                        mJpegPictureCallbackTime - mRawPictureCallbackTime;
699            }
700            Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
701                    + mPictureDisplayedToJpegCallbackTime + "ms");
702            enableCameraControls(true);
703
704            if (!mIsImageCaptureIntent) {
705                // We want to show the taken picture for a while, so we wait
706                // for at least 1.2 second before restarting the preview.
707                long delay = 1200 - mPictureDisplayedToJpegCallbackTime;
708                if (delay < 0) {
709                    restartPreview();
710                } else {
711                    mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay);
712                }
713            }
714            mImageCapture.storeImage(jpegData, camera, mLocation);
715
716            // Calculate this in advance of each shot so we don't add to shutter
717            // latency. It's true that someone else could write to the SD card in
718            // the mean time and fill it, but that could have happened between the
719            // shutter press and saving the JPEG too.
720            calculatePicturesRemaining();
721
722            if (mPicturesRemaining < 1) {
723                updateStorageHint(mPicturesRemaining);
724            }
725
726            if (!mHandler.hasMessages(RESTART_PREVIEW)) {
727                long now = System.currentTimeMillis();
728                mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
729                Log.v(TAG, "mJpegCallbackFinishTime = "
730                        + mJpegCallbackFinishTime + "ms");
731                mJpegPictureCallbackTime = 0;
732            }
733        }
734    }
735
736    private final class AutoFocusCallback
737            implements android.hardware.Camera.AutoFocusCallback {
738        public void onAutoFocus(
739                boolean focused, android.hardware.Camera camera) {
740            mFocusCallbackTime = System.currentTimeMillis();
741            mAutoFocusTime = mFocusCallbackTime - mFocusStartTime;
742            Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
743            if (mFocusState == FOCUSING_SNAP_ON_FINISH) {
744                // Take the picture no matter focus succeeds or fails. No need
745                // to play the AF sound if we're about to play the shutter
746                // sound.
747                if (focused) {
748                    mFocusState = FOCUS_SUCCESS;
749                } else {
750                    mFocusState = FOCUS_FAIL;
751                }
752                mImageCapture.onSnap();
753            } else if (mFocusState == FOCUSING) {
754                // User is half-pressing the focus key. Play the focus tone.
755                // Do not take the picture now.
756                ToneGenerator tg = mFocusToneGenerator;
757                if (tg != null) {
758                    tg.startTone(ToneGenerator.TONE_PROP_BEEP2);
759                }
760                if (focused) {
761                    mFocusState = FOCUS_SUCCESS;
762                } else {
763                    mFocusState = FOCUS_FAIL;
764                }
765            } else if (mFocusState == FOCUS_NOT_STARTED) {
766                // User has released the focus key before focus completes.
767                // Do nothing.
768            }
769            updateFocusIndicator();
770        }
771    }
772
773    private final class ZoomListener
774            implements android.hardware.Camera.OnZoomChangeListener {
775        public void onZoomChange(
776                int value, boolean stopped, android.hardware.Camera camera) {
777            Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped);
778            mZoomValue = value;
779            // Keep mParameters up to date. We do not getParameter again in
780            // takePicture. If we do not do this, wrong zoom value will be set.
781            mParameters.setZoom(value);
782            // We only care if the zoom is stopped. mZooming is set to true when
783            // we start smooth zoom.
784            if (stopped && mZoomState != ZOOM_STOPPED) {
785                if (value != mTargetZoomValue) {
786                    mCameraDevice.startSmoothZoom(mTargetZoomValue);
787                    mZoomState = ZOOM_START;
788                } else {
789                    mZoomState = ZOOM_STOPPED;
790                }
791            }
792        }
793    }
794
795    private class ImageCapture {
796
797        private Uri mLastContentUri;
798
799        byte[] mCaptureOnlyData;
800
801        // Returns the rotation degree in the jpeg header.
802        private int storeImage(byte[] data, Location loc) {
803            try {
804                long dateTaken = System.currentTimeMillis();
805                String title = createName(dateTaken);
806                String filename = title + ".jpg";
807                int[] degree = new int[1];
808                mLastContentUri = ImageManager.addImage(
809                        mContentResolver,
810                        title,
811                        dateTaken,
812                        loc, // location from gps/network
813                        ImageManager.CAMERA_IMAGE_BUCKET_NAME, filename,
814                        null, data,
815                        degree);
816                return degree[0];
817            } catch (Exception ex) {
818                Log.e(TAG, "Exception while compressing image.", ex);
819                return 0;
820            }
821        }
822
823        public void storeImage(final byte[] data,
824                android.hardware.Camera camera, Location loc) {
825            if (!mIsImageCaptureIntent) {
826                int degree = storeImage(data, loc);
827                sendBroadcast(new Intent(
828                        "com.android.camera.NEW_PICTURE", mLastContentUri));
829                setLastPictureThumb(data, degree,
830                        mImageCapture.getLastCaptureUri());
831            } else {
832                mCaptureOnlyData = data;
833                if (!mQuickCapture) {
834                    showPostCaptureAlert();
835                } else {
836                    doAttach();
837                }
838            }
839        }
840
841        /**
842         * Initiate the capture of an image.
843         */
844        public void initiate() {
845            if (mCameraDevice == null) {
846                return;
847            }
848
849            capture();
850        }
851
852        public Uri getLastCaptureUri() {
853            return mLastContentUri;
854        }
855
856        public byte[] getLastCaptureData() {
857            return mCaptureOnlyData;
858        }
859
860        private void capture() {
861            mCaptureOnlyData = null;
862
863            // See android.hardware.Camera.Parameters.setRotation for
864            // documentation.
865            int rotation = 0;
866            if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) {
867                CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
868                if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
869                    rotation = (info.orientation - mOrientation + 360) % 360;
870                } else {  // back-facing camera
871                    rotation = (info.orientation + mOrientation) % 360;
872                }
873            }
874            mParameters.setRotation(rotation);
875
876            // Clear previous GPS location from the parameters.
877            mParameters.removeGpsData();
878
879            // We always encode GpsTimeStamp
880            mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000);
881
882            // Set GPS location.
883            Location loc = mRecordLocation ? getCurrentLocation() : null;
884            if (loc != null) {
885                double lat = loc.getLatitude();
886                double lon = loc.getLongitude();
887                boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d);
888
889                if (hasLatLon) {
890                    mParameters.setGpsLatitude(lat);
891                    mParameters.setGpsLongitude(lon);
892                    mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase());
893                    if (loc.hasAltitude()) {
894                        mParameters.setGpsAltitude(loc.getAltitude());
895                    } else {
896                        // for NETWORK_PROVIDER location provider, we may have
897                        // no altitude information, but the driver needs it, so
898                        // we fake one.
899                        mParameters.setGpsAltitude(0);
900                    }
901                    if (loc.getTime() != 0) {
902                        // Location.getTime() is UTC in milliseconds.
903                        // gps-timestamp is UTC in seconds.
904                        long utcTimeSeconds = loc.getTime() / 1000;
905                        mParameters.setGpsTimestamp(utcTimeSeconds);
906                    }
907                } else {
908                    loc = null;
909                }
910            }
911
912            mCameraDevice.setParameters(mParameters);
913
914            mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback,
915                    mPostViewPictureCallback, new JpegPictureCallback(loc));
916            mPreviewing = false;
917        }
918
919        public void onSnap() {
920            // If we are already in the middle of taking a snapshot then ignore.
921            if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) {
922                return;
923            }
924            mCaptureStartTime = System.currentTimeMillis();
925            mPostViewPictureCallbackTime = 0;
926            enableCameraControls(false);
927            mStatus = SNAPSHOT_IN_PROGRESS;
928
929            mImageCapture.initiate();
930        }
931
932        private void clearLastData() {
933            mCaptureOnlyData = null;
934        }
935    }
936
937    private boolean saveDataToFile(String filePath, byte[] data) {
938        FileOutputStream f = null;
939        try {
940            f = new FileOutputStream(filePath);
941            f.write(data);
942        } catch (IOException e) {
943            return false;
944        } finally {
945            MenuHelper.closeSilently(f);
946        }
947        return true;
948    }
949
950    private String createName(long dateTaken) {
951        Date date = new Date(dateTaken);
952        SimpleDateFormat dateFormat = new SimpleDateFormat(
953                getString(R.string.image_file_name_format));
954
955        return dateFormat.format(date);
956    }
957
958    @Override
959    public void onCreate(Bundle icicle) {
960        super.onCreate(icicle);
961
962        mIsImageCaptureIntent = isImageCaptureIntent();
963        if (mIsImageCaptureIntent) {
964            setContentView(R.layout.camera_attach);
965        } else {
966            setContentView(R.layout.camera);
967        }
968        mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview);
969
970        mPreferences = new ComboPreferences(this);
971        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal());
972        mCameraId = CameraSettings.readPreferredCameraId(mPreferences);
973        mPreferences.setLocalId(this, mCameraId);
974        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
975
976        mNumberOfCameras = CameraHolder.instance().getNumberOfCameras();
977        mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
978
979        // we need to reset exposure for the preview
980        resetExposureCompensation();
981        /*
982         * To reduce startup time, we start the preview in another thread.
983         * We make sure the preview is started at the end of onCreate.
984         */
985        Thread startPreviewThread = new Thread(new Runnable() {
986            public void run() {
987                try {
988                    mStartPreviewFail = false;
989                    startPreview();
990                } catch (CameraHardwareException e) {
991                    // In eng build, we throw the exception so that test tool
992                    // can detect it and report it
993                    if ("eng".equals(Build.TYPE)) {
994                        throw new RuntimeException(e);
995                    }
996                    mStartPreviewFail = true;
997                }
998            }
999        });
1000        startPreviewThread.start();
1001
1002        // don't set mSurfaceHolder here. We have it set ONLY within
1003        // surfaceChanged / surfaceDestroyed, other parts of the code
1004        // assume that when it is set, the surface is also set.
1005        SurfaceHolder holder = mSurfaceView.getHolder();
1006        holder.addCallback(this);
1007        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
1008
1009        if (mIsImageCaptureIntent) {
1010            setupCaptureParams();
1011
1012            View reviewControl = findViewById(R.id.review_control);
1013            reviewControl.setVisibility(View.VISIBLE);
1014            reviewControl.findViewById(R.id.btn_cancel).setOnClickListener(this);
1015            reviewControl.findViewById(R.id.btn_retake).setOnClickListener(this);
1016            reviewControl.findViewById(R.id.btn_done).setOnClickListener(this);
1017        } else {
1018            mSwitcher = (SwitcherSet) findViewById(R.id.camera_switch);
1019            mSwitcher.setVisibility(View.VISIBLE);
1020            mSwitcher.setOnSwitchListener(this);
1021        }
1022        mIndicatorWheel = findViewById(R.id.indicator_wheel);
1023
1024        // Show zoom picker.
1025        ViewStub zoomStub = (ViewStub) findViewById(R.id.zoom_stub);
1026        if (zoomStub != null) mZoomPicker = (ZoomPicker) zoomStub.inflate();
1027
1028        // Make sure preview is started.
1029        try {
1030            startPreviewThread.join();
1031            if (mStartPreviewFail) {
1032                showCameraErrorAndFinish();
1033                return;
1034            }
1035        } catch (InterruptedException ex) {
1036            // ignore
1037        }
1038
1039        loadCameraPreferences();
1040
1041        // Do this after starting preview because it depends on camera
1042        // parameters.
1043        initializeControlPanel();
1044        initializeCameraPicker();
1045    }
1046
1047    private void changeHeadUpDisplayState() {
1048        if (mHeadUpDisplay == null) return;
1049        // If the camera resumes behind the lock screen, the orientation
1050        // will be portrait. That causes OOM when we try to allocation GPU
1051        // memory for the GLSurfaceView again when the orientation changes. So,
1052        // we delayed initialization of HeadUpDisplay until the orientation
1053        // becomes landscape.
1054        Configuration config = getResources().getConfiguration();
1055        if (config.orientation == Configuration.ORIENTATION_LANDSCAPE
1056                && !mPausing && mFirstTimeInitialized) {
1057            if (mGLRootView == null) attachHeadUpDisplay();
1058        } else if (mGLRootView != null) {
1059            detachHeadUpDisplay();
1060        }
1061    }
1062
1063    private void overrideCameraSettings(final String flashMode,
1064            final String whiteBalance, final String focusMode) {
1065        if (mHeadUpDisplay != null) {
1066            mHeadUpDisplay.overrideSettings(
1067                    CameraSettings.KEY_FLASH_MODE, flashMode,
1068                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1069                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1070        }
1071        if (mControlPanel != null) {
1072            mControlPanel.overrideSettings(
1073                    CameraSettings.KEY_FLASH_MODE, flashMode,
1074                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1075                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1076        }
1077    }
1078
1079    private void updateSceneModeUI() {
1080        // If scene mode is set, we cannot set flash mode, white balance, and
1081        // focus mode, instead, we read it from driver
1082        if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1083            overrideCameraSettings(mParameters.getFlashMode(),
1084                    mParameters.getWhiteBalance(), mParameters.getFocusMode());
1085        } else {
1086            overrideCameraSettings(null, null, null);
1087        }
1088    }
1089
1090    private void loadCameraPreferences() {
1091        CameraSettings settings = new CameraSettings(this, mInitialParams,
1092                mCameraId, CameraHolder.instance().getCameraInfo());
1093        mPreferenceGroup = settings.getPreferenceGroup(
1094                R.xml.camera_preferences);
1095        mFrontCameraId =
1096                settings.getCameraIdByIndex(CameraInfo.CAMERA_FACING_FRONT);
1097        mBackCameraId =
1098                settings.getCameraIdByIndex(CameraInfo.CAMERA_FACING_BACK);
1099    }
1100
1101    private void initializeControlPanel() {
1102        String[] keys = new String[]{CameraSettings.KEY_FLASH_MODE,
1103            CameraSettings.KEY_WHITE_BALANCE,
1104            CameraSettings.KEY_COLOR_EFFECT,
1105            CameraSettings.KEY_SCENE_MODE};
1106        mControlPanel = (ControlPanel) findViewById(R.id.control_panel);
1107        if (mControlPanel != null) {
1108            mControlPanel.initialize(this, mPreferenceGroup, keys, true);
1109            mControlPanel.setListener(new MyControlPanelListener());
1110            mPopupGestureDetector = new GestureDetector(this,
1111                    new PopupGestureListener());
1112            updateSceneModeUI();
1113        }
1114    }
1115
1116    private void initializeHeadUpDisplay() {
1117        if (mHeadUpDisplay == null) return;
1118        // If we have zoom picker, do not show zoom control on head-up display.
1119        float[] zoomRatios = null;
1120        if (mZoomPicker == null) zoomRatios = getZoomRatios();
1121        mHeadUpDisplay.initialize(this, mPreferenceGroup,
1122                zoomRatios, mOrientationCompensation);
1123        if (mZoomPicker == null && mParameters.isZoomSupported()) {
1124            mHeadUpDisplay.setZoomListener(new ZoomControllerListener() {
1125                public void onZoomChanged(
1126                        int index, float ratio, boolean isMoving) {
1127                    onZoomValueChanged(index);
1128                }
1129            });
1130        }
1131        updateSceneModeUI();
1132    }
1133
1134    private void attachHeadUpDisplay() {
1135        mHeadUpDisplay.setOrientation(mOrientationCompensation);
1136        if (mParameters.isZoomSupported()) {
1137            mHeadUpDisplay.setZoomIndex(mZoomValue);
1138        }
1139        ViewGroup frame = (ViewGroup) findViewById(R.id.frame);
1140        mGLRootView = new GLRootView(this);
1141        mGLRootView.setContentPane(mHeadUpDisplay);
1142        frame.addView(mGLRootView);
1143    }
1144
1145    private void detachHeadUpDisplay() {
1146        mHeadUpDisplay.setGpsHasSignal(false);
1147        mHeadUpDisplay.collapse();
1148        ((ViewGroup) mGLRootView.getParent()).removeView(mGLRootView);
1149        mGLRootView = null;
1150    }
1151
1152    private boolean collapseCameraControls() {
1153        if (mHeadUpDisplay != null && mHeadUpDisplay.collapse()) {
1154            return true;
1155        }
1156        if (mControlPanel != null && mControlPanel.dismissSettingPopup()) {
1157            return true;
1158        }
1159        return false;
1160    }
1161
1162    private void enableCameraControls(boolean enable) {
1163        if (mHeadUpDisplay != null) mHeadUpDisplay.setEnabled(enable);
1164        if (mControlPanel != null) mControlPanel.setEnabled(enable);
1165    }
1166
1167    public static int roundOrientation(int orientation) {
1168        return ((orientation + 45) / 90 * 90) % 360;
1169    }
1170
1171    private class MyOrientationEventListener
1172            extends OrientationEventListener {
1173        public MyOrientationEventListener(Context context) {
1174            super(context);
1175        }
1176
1177        @Override
1178        public void onOrientationChanged(int orientation) {
1179            // We keep the last known orientation. So if the user first orient
1180            // the camera then point the camera to floor or sky, we still have
1181            // the correct orientation.
1182            if (orientation == ORIENTATION_UNKNOWN) return;
1183            mOrientation = roundOrientation(orientation);
1184            // When the screen is unlocked, display rotation may change. Always
1185            // calculate the up-to-date orientationCompensation.
1186            int orientationCompensation = mOrientation
1187                    + Util.getDisplayRotation(Camera.this);
1188            if (mOrientationCompensation != orientationCompensation) {
1189                mOrientationCompensation = orientationCompensation;
1190                if (!mIsImageCaptureIntent) {
1191                    setOrientationIndicator(mOrientationCompensation);
1192                }
1193                if (mHeadUpDisplay != null) {
1194                    mHeadUpDisplay.setOrientation(mOrientationCompensation);
1195                }
1196            }
1197        }
1198    }
1199
1200    private void setOrientationIndicator(int degree) {
1201        RotateImageView icon = (RotateImageView) findViewById(
1202                R.id.review_thumbnail);
1203        if (icon != null) icon.setDegree(degree);
1204
1205        icon = (RotateImageView) findViewById(R.id.camera_switch_icon);
1206        if (icon != null) icon.setDegree(degree);
1207        icon = (RotateImageView) findViewById(R.id.video_switch_icon);
1208        if (icon != null) icon.setDegree(degree);
1209    }
1210
1211    @Override
1212    public void onStart() {
1213        super.onStart();
1214        if (!mIsImageCaptureIntent) {
1215            mSwitcher.setSwitch(SWITCH_CAMERA);
1216        }
1217    }
1218
1219    @Override
1220    public void onStop() {
1221        super.onStop();
1222        if (mMediaProviderClient != null) {
1223            mMediaProviderClient.release();
1224            mMediaProviderClient = null;
1225        }
1226    }
1227
1228    private void checkStorage() {
1229        calculatePicturesRemaining();
1230        updateStorageHint(mPicturesRemaining);
1231    }
1232
1233    public void onClick(View v) {
1234        switch (v.getId()) {
1235            case R.id.btn_retake:
1236                hidePostCaptureAlert();
1237                restartPreview();
1238                break;
1239            case R.id.review_thumbnail:
1240                if (isCameraIdle()) {
1241                    viewImage(mThumbnailButton);
1242                }
1243                break;
1244            case R.id.btn_done:
1245                doAttach();
1246                break;
1247            case R.id.btn_cancel:
1248                doCancel();
1249                break;
1250            case R.id.btn_gallery:
1251                gotoGallery();
1252                break;
1253        }
1254    }
1255
1256    private Bitmap createCaptureBitmap(byte[] data) {
1257        // This is really stupid...we just want to read the orientation in
1258        // the jpeg header.
1259        String filepath = ImageManager.getTempJpegPath();
1260        int degree = 0;
1261        if (saveDataToFile(filepath, data)) {
1262            degree = ImageManager.getExifOrientation(filepath);
1263            new File(filepath).delete();
1264        }
1265
1266        // Limit to 50k pixels so we can return it in the intent.
1267        Bitmap bitmap = Util.makeBitmap(data, 50 * 1024);
1268        bitmap = Util.rotate(bitmap, degree);
1269        return bitmap;
1270    }
1271
1272    private void doAttach() {
1273        if (mPausing) {
1274            return;
1275        }
1276
1277        byte[] data = mImageCapture.getLastCaptureData();
1278
1279        if (mCropValue == null) {
1280            // First handle the no crop case -- just return the value.  If the
1281            // caller specifies a "save uri" then write the data to it's
1282            // stream. Otherwise, pass back a scaled down version of the bitmap
1283            // directly in the extras.
1284            if (mSaveUri != null) {
1285                OutputStream outputStream = null;
1286                try {
1287                    outputStream = mContentResolver.openOutputStream(mSaveUri);
1288                    outputStream.write(data);
1289                    outputStream.close();
1290
1291                    setResult(RESULT_OK);
1292                    finish();
1293                } catch (IOException ex) {
1294                    // ignore exception
1295                } finally {
1296                    Util.closeSilently(outputStream);
1297                }
1298            } else {
1299                Bitmap bitmap = createCaptureBitmap(data);
1300                setResult(RESULT_OK,
1301                        new Intent("inline-data").putExtra("data", bitmap));
1302                finish();
1303            }
1304        } else {
1305            // Save the image to a temp file and invoke the cropper
1306            Uri tempUri = null;
1307            FileOutputStream tempStream = null;
1308            try {
1309                File path = getFileStreamPath(sTempCropFilename);
1310                path.delete();
1311                tempStream = openFileOutput(sTempCropFilename, 0);
1312                tempStream.write(data);
1313                tempStream.close();
1314                tempUri = Uri.fromFile(path);
1315            } catch (FileNotFoundException ex) {
1316                setResult(Activity.RESULT_CANCELED);
1317                finish();
1318                return;
1319            } catch (IOException ex) {
1320                setResult(Activity.RESULT_CANCELED);
1321                finish();
1322                return;
1323            } finally {
1324                Util.closeSilently(tempStream);
1325            }
1326
1327            Bundle newExtras = new Bundle();
1328            if (mCropValue.equals("circle")) {
1329                newExtras.putString("circleCrop", "true");
1330            }
1331            if (mSaveUri != null) {
1332                newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
1333            } else {
1334                newExtras.putBoolean("return-data", true);
1335            }
1336
1337            Intent cropIntent = new Intent("com.android.camera.action.CROP");
1338
1339            cropIntent.setData(tempUri);
1340            cropIntent.putExtras(newExtras);
1341
1342            startActivityForResult(cropIntent, CROP_MSG);
1343        }
1344    }
1345
1346    private void doCancel() {
1347        setResult(RESULT_CANCELED, new Intent());
1348        finish();
1349    }
1350
1351    public void onShutterButtonFocus(ShutterButton button, boolean pressed) {
1352        if (mPausing) {
1353            return;
1354        }
1355        switch (button.getId()) {
1356            case R.id.shutter_button:
1357                doFocus(pressed);
1358                break;
1359        }
1360    }
1361
1362    public void onShutterButtonClick(ShutterButton button) {
1363        if (mPausing) {
1364            return;
1365        }
1366        switch (button.getId()) {
1367            case R.id.shutter_button:
1368                doSnap();
1369                break;
1370        }
1371    }
1372
1373    private OnScreenHint mStorageHint;
1374
1375    private void updateStorageHint(int remaining) {
1376        String noStorageText = null;
1377
1378        if (remaining == MenuHelper.NO_STORAGE_ERROR) {
1379            String state = Environment.getExternalStorageState();
1380            if (state == Environment.MEDIA_CHECKING) {
1381                noStorageText = getString(R.string.preparing_sd);
1382            } else {
1383                noStorageText = getString(R.string.no_storage);
1384            }
1385        } else if (remaining == MenuHelper.CANNOT_STAT_ERROR) {
1386            noStorageText = getString(R.string.access_sd_fail);
1387        } else if (remaining < 1) {
1388            noStorageText = getString(R.string.not_enough_space);
1389        }
1390
1391        if (noStorageText != null) {
1392            if (mStorageHint == null) {
1393                mStorageHint = OnScreenHint.makeText(this, noStorageText);
1394            } else {
1395                mStorageHint.setText(noStorageText);
1396            }
1397            mStorageHint.show();
1398        } else if (mStorageHint != null) {
1399            mStorageHint.cancel();
1400            mStorageHint = null;
1401        }
1402    }
1403
1404    private void installIntentFilter() {
1405        // install an intent filter to receive SD card related events.
1406        IntentFilter intentFilter =
1407                new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
1408        intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
1409        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
1410        intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
1411        intentFilter.addDataScheme("file");
1412        registerReceiver(mReceiver, intentFilter);
1413        mDidRegister = true;
1414    }
1415
1416    private void initializeFocusTone() {
1417        // Initialize focus tone generator.
1418        try {
1419            mFocusToneGenerator = new ToneGenerator(
1420                    AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME);
1421        } catch (Throwable ex) {
1422            Log.w(TAG, "Exception caught while creating tone generator: ", ex);
1423            mFocusToneGenerator = null;
1424        }
1425    }
1426
1427    private void initializeScreenBrightness() {
1428        Window win = getWindow();
1429        // Overright the brightness settings if it is automatic
1430        int mode = Settings.System.getInt(
1431                getContentResolver(),
1432                Settings.System.SCREEN_BRIGHTNESS_MODE,
1433                Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
1434        if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {
1435            WindowManager.LayoutParams winParams = win.getAttributes();
1436            winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS;
1437            win.setAttributes(winParams);
1438        }
1439    }
1440
1441    @Override
1442    protected void onResume() {
1443        super.onResume();
1444
1445        mPausing = false;
1446        mJpegPictureCallbackTime = 0;
1447        mZoomValue = 0;
1448        mImageCapture = new ImageCapture();
1449
1450        // Start the preview if it is not started.
1451        if (!mPreviewing && !mStartPreviewFail) {
1452            resetExposureCompensation();
1453            if (!restartPreview()) return;
1454        }
1455
1456        if (mSurfaceHolder != null) {
1457            // If first time initialization is not finished, put it in the
1458            // message queue.
1459            if (!mFirstTimeInitialized) {
1460                mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1461            } else {
1462                initializeSecondTime();
1463            }
1464        }
1465        keepScreenOnAwhile();
1466    }
1467
1468    @Override
1469    public void onConfigurationChanged(Configuration config) {
1470        super.onConfigurationChanged(config);
1471        changeHeadUpDisplayState();
1472    }
1473
1474    private static ImageManager.DataLocation dataLocation() {
1475        return ImageManager.DataLocation.EXTERNAL;
1476    }
1477
1478    @Override
1479    protected void onPause() {
1480        mPausing = true;
1481        stopPreview();
1482        // Close the camera now because other activities may need to use it.
1483        closeCamera();
1484        resetScreenOn();
1485        collapseCameraControls();
1486        changeHeadUpDisplayState();
1487
1488        if (mFirstTimeInitialized) {
1489            mOrientationListener.disable();
1490            if (!mIsImageCaptureIntent) {
1491                if (mThumbnailButton != null) {
1492                    mThumbnailButton.storeData(
1493                            ImageManager.getLastImageThumbPath());
1494                }
1495            }
1496            hidePostCaptureAlert();
1497        }
1498
1499        if (mDidRegister) {
1500            unregisterReceiver(mReceiver);
1501            mDidRegister = false;
1502        }
1503        stopReceivingLocationUpdates();
1504
1505        if (mFocusToneGenerator != null) {
1506            mFocusToneGenerator.release();
1507            mFocusToneGenerator = null;
1508        }
1509
1510        if (mStorageHint != null) {
1511            mStorageHint.cancel();
1512            mStorageHint = null;
1513        }
1514
1515        // If we are in an image capture intent and has taken
1516        // a picture, we just clear it in onPause.
1517        mImageCapture.clearLastData();
1518        mImageCapture = null;
1519
1520        // Remove the messages in the event queue.
1521        mHandler.removeMessages(RESTART_PREVIEW);
1522        mHandler.removeMessages(FIRST_TIME_INIT);
1523
1524        super.onPause();
1525    }
1526
1527    @Override
1528    protected void onActivityResult(
1529            int requestCode, int resultCode, Intent data) {
1530        switch (requestCode) {
1531            case CROP_MSG: {
1532                Intent intent = new Intent();
1533                if (data != null) {
1534                    Bundle extras = data.getExtras();
1535                    if (extras != null) {
1536                        intent.putExtras(extras);
1537                    }
1538                }
1539                setResult(resultCode, intent);
1540                finish();
1541
1542                File path = getFileStreamPath(sTempCropFilename);
1543                path.delete();
1544
1545                break;
1546            }
1547        }
1548    }
1549
1550    private boolean canTakePicture() {
1551        return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0);
1552    }
1553
1554    private void autoFocus() {
1555        // Initiate autofocus only when preview is started and snapshot is not
1556        // in progress.
1557        if (canTakePicture()) {
1558            enableCameraControls(false);
1559            Log.v(TAG, "Start autofocus.");
1560            mFocusStartTime = System.currentTimeMillis();
1561            mFocusState = FOCUSING;
1562            updateFocusIndicator();
1563            mCameraDevice.autoFocus(mAutoFocusCallback);
1564        }
1565    }
1566
1567    private void cancelAutoFocus() {
1568        // User releases half-pressed focus key.
1569        if (mStatus != SNAPSHOT_IN_PROGRESS && (mFocusState == FOCUSING
1570                || mFocusState == FOCUS_SUCCESS || mFocusState == FOCUS_FAIL)) {
1571            Log.v(TAG, "Cancel autofocus.");
1572            enableCameraControls(true);
1573            mCameraDevice.cancelAutoFocus();
1574        }
1575        if (mFocusState != FOCUSING_SNAP_ON_FINISH) {
1576            clearFocusState();
1577        }
1578    }
1579
1580    private void clearFocusState() {
1581        mFocusState = FOCUS_NOT_STARTED;
1582        updateFocusIndicator();
1583    }
1584
1585    private void updateFocusIndicator() {
1586        if (mFocusRectangle == null) return;
1587
1588        if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) {
1589            mFocusRectangle.showStart();
1590        } else if (mFocusState == FOCUS_SUCCESS) {
1591            mFocusRectangle.showSuccess();
1592        } else if (mFocusState == FOCUS_FAIL) {
1593            mFocusRectangle.showFail();
1594        } else {
1595            mFocusRectangle.clear();
1596        }
1597    }
1598
1599    @Override
1600    public void onBackPressed() {
1601        if (!isCameraIdle()) {
1602            // ignore backs while we're taking a picture
1603            return;
1604        } else if (!collapseCameraControls()) {
1605            super.onBackPressed();
1606        }
1607    }
1608
1609    @Override
1610    public boolean onKeyDown(int keyCode, KeyEvent event) {
1611        switch (keyCode) {
1612            case KeyEvent.KEYCODE_FOCUS:
1613                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1614                    doFocus(true);
1615                }
1616                return true;
1617            case KeyEvent.KEYCODE_CAMERA:
1618                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1619                    doSnap();
1620                }
1621                return true;
1622            case KeyEvent.KEYCODE_DPAD_CENTER:
1623                // If we get a dpad center event without any focused view, move
1624                // the focus to the shutter button and press it.
1625                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1626                    // Start auto-focus immediately to reduce shutter lag. After
1627                    // the shutter button gets the focus, doFocus() will be
1628                    // called again but it is fine.
1629                    if (collapseCameraControls()) return true;
1630                    doFocus(true);
1631                    if (mShutterButton.isInTouchMode()) {
1632                        mShutterButton.requestFocusFromTouch();
1633                    } else {
1634                        mShutterButton.requestFocus();
1635                    }
1636                    mShutterButton.setPressed(true);
1637                }
1638                return true;
1639        }
1640
1641        return super.onKeyDown(keyCode, event);
1642    }
1643
1644    @Override
1645    public boolean onKeyUp(int keyCode, KeyEvent event) {
1646        switch (keyCode) {
1647            case KeyEvent.KEYCODE_FOCUS:
1648                if (mFirstTimeInitialized) {
1649                    doFocus(false);
1650                }
1651                return true;
1652        }
1653        return super.onKeyUp(keyCode, event);
1654    }
1655
1656    private void doSnap() {
1657        if (collapseCameraControls()) return;
1658
1659        Log.v(TAG, "doSnap: mFocusState=" + mFocusState);
1660        // If the user has half-pressed the shutter and focus is completed, we
1661        // can take the photo right away. If the focus mode is infinity, we can
1662        // also take the photo.
1663        if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1664                || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1665                || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF)
1666                || (mFocusState == FOCUS_SUCCESS
1667                || mFocusState == FOCUS_FAIL)) {
1668            mImageCapture.onSnap();
1669        } else if (mFocusState == FOCUSING) {
1670            // Half pressing the shutter (i.e. the focus button event) will
1671            // already have requested AF for us, so just request capture on
1672            // focus here.
1673            mFocusState = FOCUSING_SNAP_ON_FINISH;
1674        } else if (mFocusState == FOCUS_NOT_STARTED) {
1675            // Focus key down event is dropped for some reasons. Just ignore.
1676        }
1677    }
1678
1679    private void doFocus(boolean pressed) {
1680        // Do the focus if the mode is not infinity.
1681        if (collapseCameraControls()) return;
1682        if (!(mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1683                  || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1684                  || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF))) {
1685            if (pressed) {  // Focus key down.
1686                autoFocus();
1687            } else {  // Focus key up.
1688                cancelAutoFocus();
1689            }
1690        }
1691    }
1692
1693    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
1694        // Make sure we have a surface in the holder before proceeding.
1695        if (holder.getSurface() == null) {
1696            Log.d(TAG, "holder.getSurface() == null");
1697            return;
1698        }
1699
1700        // We need to save the holder for later use, even when the mCameraDevice
1701        // is null. This could happen if onResume() is invoked after this
1702        // function.
1703        mSurfaceHolder = holder;
1704
1705        // The mCameraDevice will be null if it fails to connect to the camera
1706        // hardware. In this case we will show a dialog and then finish the
1707        // activity, so it's OK to ignore it.
1708        if (mCameraDevice == null) return;
1709
1710        // Sometimes surfaceChanged is called after onPause or before onResume.
1711        // Ignore it.
1712        if (mPausing || isFinishing()) return;
1713
1714        if (mPreviewing && holder.isCreating()) {
1715            // Set preview display if the surface is being created and preview
1716            // was already started. That means preview display was set to null
1717            // and we need to set it now.
1718            setPreviewDisplay(holder);
1719        } else {
1720            // 1. Restart the preview if the size of surface was changed. The
1721            // framework may not support changing preview display on the fly.
1722            // 2. Start the preview now if surface was destroyed and preview
1723            // stopped.
1724            restartPreview();
1725        }
1726
1727        // If first time initialization is not finished, send a message to do
1728        // it later. We want to finish surfaceChanged as soon as possible to let
1729        // user see preview first.
1730        if (!mFirstTimeInitialized) {
1731            mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1732        } else {
1733            initializeSecondTime();
1734        }
1735    }
1736
1737    public void surfaceCreated(SurfaceHolder holder) {
1738    }
1739
1740    public void surfaceDestroyed(SurfaceHolder holder) {
1741        stopPreview();
1742        mSurfaceHolder = null;
1743    }
1744
1745    private void closeCamera() {
1746        if (mCameraDevice != null) {
1747            CameraHolder.instance().release();
1748            mCameraDevice.setZoomChangeListener(null);
1749            mCameraDevice = null;
1750            mPreviewing = false;
1751        }
1752    }
1753
1754    private void ensureCameraDevice() throws CameraHardwareException {
1755        if (mCameraDevice == null) {
1756            mCameraDevice = CameraHolder.instance().open(mCameraId);
1757            mInitialParams = mCameraDevice.getParameters();
1758        }
1759    }
1760
1761    private void showCameraErrorAndFinish() {
1762        Resources ress = getResources();
1763        Util.showFatalErrorAndFinish(Camera.this,
1764                ress.getString(R.string.camera_error_title),
1765                ress.getString(R.string.cannot_connect_camera));
1766    }
1767
1768    private boolean restartPreview() {
1769        try {
1770            startPreview();
1771        } catch (CameraHardwareException e) {
1772            showCameraErrorAndFinish();
1773            return false;
1774        }
1775        return true;
1776    }
1777
1778    private void setPreviewDisplay(SurfaceHolder holder) {
1779        try {
1780            mCameraDevice.setPreviewDisplay(holder);
1781        } catch (Throwable ex) {
1782            closeCamera();
1783            throw new RuntimeException("setPreviewDisplay failed", ex);
1784        }
1785    }
1786
1787    private void startPreview() throws CameraHardwareException {
1788        if (mPausing || isFinishing()) return;
1789
1790        ensureCameraDevice();
1791        mCameraDevice.setErrorCallback(mErrorCallback);
1792
1793        // If we're previewing already, stop the preview first (this will blank
1794        // the screen).
1795        if (mPreviewing) stopPreview();
1796
1797        setPreviewDisplay(mSurfaceHolder);
1798        Util.setCameraDisplayOrientation(this, mCameraId, mCameraDevice);
1799        setCameraParameters(UPDATE_PARAM_ALL);
1800
1801
1802        try {
1803            Log.v(TAG, "startPreview");
1804            mCameraDevice.startPreview();
1805        } catch (Throwable ex) {
1806            closeCamera();
1807            throw new RuntimeException("startPreview failed", ex);
1808        }
1809        mPreviewing = true;
1810        mZoomState = ZOOM_STOPPED;
1811        mStatus = IDLE;
1812    }
1813
1814    private void stopPreview() {
1815        if (mCameraDevice != null && mPreviewing) {
1816            Log.v(TAG, "stopPreview");
1817            mCameraDevice.stopPreview();
1818        }
1819        mPreviewing = false;
1820        // If auto focus was in progress, it would have been canceled.
1821        clearFocusState();
1822    }
1823
1824    private static boolean isSupported(String value, List<String> supported) {
1825        return supported == null ? false : supported.indexOf(value) >= 0;
1826    }
1827
1828    private void updateCameraParametersInitialize() {
1829        // Reset preview frame rate to the maximum because it may be lowered by
1830        // video camera application.
1831        List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates();
1832        if (frameRates != null) {
1833            Integer max = Collections.max(frameRates);
1834            mParameters.setPreviewFrameRate(max);
1835        }
1836
1837    }
1838
1839    private void updateCameraParametersZoom() {
1840        // Set zoom.
1841        if (mParameters.isZoomSupported()) {
1842            mParameters.setZoom(mZoomValue);
1843        }
1844    }
1845
1846    private void updateCameraParametersPreference() {
1847        // Set picture size.
1848        String pictureSize = mPreferences.getString(
1849                CameraSettings.KEY_PICTURE_SIZE, null);
1850        if (pictureSize == null) {
1851            CameraSettings.initialCameraPictureSize(this, mParameters);
1852        } else {
1853            List<Size> supported = mParameters.getSupportedPictureSizes();
1854            CameraSettings.setCameraPictureSize(
1855                    pictureSize, supported, mParameters);
1856        }
1857
1858        // Set the preview frame aspect ratio according to the picture size.
1859        Size size = mParameters.getPictureSize();
1860        PreviewFrameLayout frameLayout =
1861                (PreviewFrameLayout) findViewById(R.id.frame_layout);
1862        frameLayout.setAspectRatio((double) size.width / size.height);
1863
1864        // Set a preview size that is closest to the viewfinder height and has
1865        // the right aspect ratio.
1866        List<Size> sizes = mParameters.getSupportedPreviewSizes();
1867        Size optimalSize = Util.getOptimalPreviewSize(this,
1868                sizes, (double) size.width / size.height);
1869        if (optimalSize != null) {
1870            Size original = mParameters.getPreviewSize();
1871            if (!original.equals(optimalSize)) {
1872                mParameters.setPreviewSize(optimalSize.width, optimalSize.height);
1873
1874                // Zoom related settings will be changed for different preview
1875                // sizes, so set and read the parameters to get lastest values
1876                mCameraDevice.setParameters(mParameters);
1877                mParameters = mCameraDevice.getParameters();
1878            }
1879        }
1880
1881        // Since change scene mode may change supported values,
1882        // Set scene mode first,
1883        mSceneMode = mPreferences.getString(
1884                CameraSettings.KEY_SCENE_MODE,
1885                getString(R.string.pref_camera_scenemode_default));
1886        if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
1887            if (!mParameters.getSceneMode().equals(mSceneMode)) {
1888                mParameters.setSceneMode(mSceneMode);
1889                mCameraDevice.setParameters(mParameters);
1890
1891                // Setting scene mode will change the settings of flash mode,
1892                // white balance, and focus mode. Here we read back the
1893                // parameters, so we can know those settings.
1894                mParameters = mCameraDevice.getParameters();
1895            }
1896        } else {
1897            mSceneMode = mParameters.getSceneMode();
1898            if (mSceneMode == null) {
1899                mSceneMode = Parameters.SCENE_MODE_AUTO;
1900            }
1901        }
1902
1903        // Set JPEG quality.
1904        String jpegQuality = mPreferences.getString(
1905                CameraSettings.KEY_JPEG_QUALITY,
1906                getString(R.string.pref_camera_jpegquality_default));
1907        mParameters.setJpegQuality(JpegEncodingQualityMappings.getQualityNumber(jpegQuality));
1908
1909        // For the following settings, we need to check if the settings are
1910        // still supported by latest driver, if not, ignore the settings.
1911
1912        // Set color effect parameter.
1913        String colorEffect = mPreferences.getString(
1914                CameraSettings.KEY_COLOR_EFFECT,
1915                getString(R.string.pref_camera_coloreffect_default));
1916        if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) {
1917            mParameters.setColorEffect(colorEffect);
1918        }
1919
1920        // Set exposure compensation
1921        String exposure = mPreferences.getString(
1922                CameraSettings.KEY_EXPOSURE,
1923                getString(R.string.pref_exposure_default));
1924        try {
1925            int value = Integer.parseInt(exposure);
1926            int max = mParameters.getMaxExposureCompensation();
1927            int min = mParameters.getMinExposureCompensation();
1928            if (value >= min && value <= max) {
1929                mParameters.setExposureCompensation(value);
1930            } else {
1931                Log.w(TAG, "invalid exposure range: " + exposure);
1932            }
1933        } catch (NumberFormatException e) {
1934            Log.w(TAG, "invalid exposure: " + exposure);
1935        }
1936
1937        if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1938            // Set flash mode.
1939            String flashMode = mPreferences.getString(
1940                    CameraSettings.KEY_FLASH_MODE,
1941                    getString(R.string.pref_camera_flashmode_default));
1942            List<String> supportedFlash = mParameters.getSupportedFlashModes();
1943            if (isSupported(flashMode, supportedFlash)) {
1944                mParameters.setFlashMode(flashMode);
1945            } else {
1946                flashMode = mParameters.getFlashMode();
1947                if (flashMode == null) {
1948                    flashMode = getString(
1949                            R.string.pref_camera_flashmode_no_flash);
1950                }
1951            }
1952
1953            // Set white balance parameter.
1954            String whiteBalance = mPreferences.getString(
1955                    CameraSettings.KEY_WHITE_BALANCE,
1956                    getString(R.string.pref_camera_whitebalance_default));
1957            if (isSupported(whiteBalance,
1958                    mParameters.getSupportedWhiteBalance())) {
1959                mParameters.setWhiteBalance(whiteBalance);
1960            } else {
1961                whiteBalance = mParameters.getWhiteBalance();
1962                if (whiteBalance == null) {
1963                    whiteBalance = Parameters.WHITE_BALANCE_AUTO;
1964                }
1965            }
1966
1967            // Set focus mode.
1968            mFocusMode = mPreferences.getString(
1969                    CameraSettings.KEY_FOCUS_MODE,
1970                    getString(R.string.pref_camera_focusmode_default));
1971            if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) {
1972                mParameters.setFocusMode(mFocusMode);
1973            } else {
1974                mFocusMode = mParameters.getFocusMode();
1975                if (mFocusMode == null) {
1976                    mFocusMode = Parameters.FOCUS_MODE_AUTO;
1977                }
1978            }
1979        } else {
1980            mFocusMode = mParameters.getFocusMode();
1981        }
1982    }
1983
1984    // We separate the parameters into several subsets, so we can update only
1985    // the subsets actually need updating. The PREFERENCE set needs extra
1986    // locking because the preference can be changed from GLThread as well.
1987    private void setCameraParameters(int updateSet) {
1988        mParameters = mCameraDevice.getParameters();
1989
1990        if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
1991            updateCameraParametersInitialize();
1992        }
1993
1994        if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
1995            updateCameraParametersZoom();
1996        }
1997
1998        if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
1999            updateCameraParametersPreference();
2000        }
2001
2002        mCameraDevice.setParameters(mParameters);
2003    }
2004
2005    // If the Camera is idle, update the parameters immediately, otherwise
2006    // accumulate them in mUpdateSet and update later.
2007    private void setCameraParametersWhenIdle(int additionalUpdateSet) {
2008        mUpdateSet |= additionalUpdateSet;
2009        if (mCameraDevice == null) {
2010            // We will update all the parameters when we open the device, so
2011            // we don't need to do anything now.
2012            mUpdateSet = 0;
2013            return;
2014        } else if (isCameraIdle()) {
2015            setCameraParameters(mUpdateSet);
2016            updateSceneModeUI();
2017            mUpdateSet = 0;
2018        } else {
2019            if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
2020                mHandler.sendEmptyMessageDelayed(
2021                        SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
2022            }
2023        }
2024    }
2025
2026    private void gotoGallery() {
2027        MenuHelper.gotoCameraImageGallery(this);
2028    }
2029
2030    private void viewImage(RotateImageView view) {
2031        if(!view.isUriValid()) {
2032            Log.e(TAG, "Uri invalid. uri=" + view.getUri());
2033            return;
2034        }
2035
2036        try {
2037            startActivity(new Intent(
2038                    Util.REVIEW_ACTION, view.getUri()));
2039        } catch (ActivityNotFoundException ex) {
2040            try {
2041                startActivity(new Intent(
2042                        Intent.ACTION_VIEW, view.getUri()));
2043            } catch (ActivityNotFoundException e) {
2044                Log.e(TAG, "review image fail. uri=" + view.getUri(), e);
2045            }
2046        }
2047    }
2048
2049    private void startReceivingLocationUpdates() {
2050        if (mLocationManager != null) {
2051            try {
2052                mLocationManager.requestLocationUpdates(
2053                        LocationManager.NETWORK_PROVIDER,
2054                        1000,
2055                        0F,
2056                        mLocationListeners[1]);
2057            } catch (java.lang.SecurityException ex) {
2058                Log.i(TAG, "fail to request location update, ignore", ex);
2059            } catch (IllegalArgumentException ex) {
2060                Log.d(TAG, "provider does not exist " + ex.getMessage());
2061            }
2062            try {
2063                mLocationManager.requestLocationUpdates(
2064                        LocationManager.GPS_PROVIDER,
2065                        1000,
2066                        0F,
2067                        mLocationListeners[0]);
2068                showGpsOnScreenIndicator(false);
2069            } catch (java.lang.SecurityException ex) {
2070                Log.i(TAG, "fail to request location update, ignore", ex);
2071            } catch (IllegalArgumentException ex) {
2072                Log.d(TAG, "provider does not exist " + ex.getMessage());
2073            }
2074        }
2075    }
2076
2077    private void stopReceivingLocationUpdates() {
2078        if (mLocationManager != null) {
2079            for (int i = 0; i < mLocationListeners.length; i++) {
2080                try {
2081                    mLocationManager.removeUpdates(mLocationListeners[i]);
2082                } catch (Exception ex) {
2083                    Log.i(TAG, "fail to remove location listners, ignore", ex);
2084                }
2085            }
2086        }
2087        hideGpsOnScreenIndicator();
2088    }
2089
2090    private Location getCurrentLocation() {
2091        // go in best to worst order
2092        for (int i = 0; i < mLocationListeners.length; i++) {
2093            Location l = mLocationListeners[i].current();
2094            if (l != null) return l;
2095        }
2096        return null;
2097    }
2098
2099    private boolean isCameraIdle() {
2100        return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED;
2101    }
2102
2103    private boolean isImageCaptureIntent() {
2104        String action = getIntent().getAction();
2105        return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
2106    }
2107
2108    private void setupCaptureParams() {
2109        Bundle myExtras = getIntent().getExtras();
2110        if (myExtras != null) {
2111            mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
2112            mCropValue = myExtras.getString("crop");
2113        }
2114    }
2115
2116    private void showPostCaptureAlert() {
2117        if (mIsImageCaptureIntent) {
2118            if (mIndicatorWheel == null) {
2119                mShutterButton.setVisibility(View.INVISIBLE);
2120            }
2121            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2122            for (int id : pickIds) {
2123                View button = findViewById(id);
2124                ((View) button.getParent()).setVisibility(View.VISIBLE);
2125            }
2126        }
2127    }
2128
2129    private void hidePostCaptureAlert() {
2130        if (mIsImageCaptureIntent) {
2131            if (mIndicatorWheel == null) {
2132                mShutterButton.setVisibility(View.VISIBLE);
2133            }
2134            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2135            for (int id : pickIds) {
2136                View button = findViewById(id);
2137                ((View) button.getParent()).setVisibility(View.GONE);
2138            }
2139        }
2140    }
2141
2142    private int calculatePicturesRemaining() {
2143        mPicturesRemaining = MenuHelper.calculatePicturesRemaining();
2144        return mPicturesRemaining;
2145    }
2146
2147    @Override
2148    public boolean onPrepareOptionsMenu(Menu menu) {
2149        super.onPrepareOptionsMenu(menu);
2150        // Only show the menu when camera is idle.
2151        for (int i = 0; i < menu.size(); i++) {
2152            menu.getItem(i).setVisible(isCameraIdle());
2153        }
2154
2155        return true;
2156    }
2157
2158    @Override
2159    public boolean onCreateOptionsMenu(Menu menu) {
2160        super.onCreateOptionsMenu(menu);
2161
2162        if (mIsImageCaptureIntent) {
2163            // No options menu for attach mode.
2164            return false;
2165        } else {
2166            addBaseMenuItems(menu);
2167        }
2168        return true;
2169    }
2170
2171    private void addBaseMenuItems(Menu menu) {
2172        MenuHelper.addSwitchModeMenuItem(menu, true, new Runnable() {
2173            public void run() {
2174                switchToVideoMode();
2175            }
2176        });
2177        MenuItem gallery = menu.add(Menu.NONE, Menu.NONE,
2178                MenuHelper.POSITION_GOTO_GALLERY,
2179                R.string.camera_gallery_photos_text)
2180                .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2181            public boolean onMenuItemClick(MenuItem item) {
2182                gotoGallery();
2183                return true;
2184            }
2185        });
2186        gallery.setIcon(android.R.drawable.ic_menu_gallery);
2187        mGalleryItems.add(gallery);
2188
2189        if (mNumberOfCameras > 1) {
2190            menu.add(Menu.NONE, Menu.NONE,
2191                    MenuHelper.POSITION_SWITCH_CAMERA_ID,
2192                    R.string.switch_camera_id)
2193                    .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2194                public boolean onMenuItemClick(MenuItem item) {
2195                    CameraSettings.writePreferredCameraId(mPreferences,
2196                            ((mCameraId == mFrontCameraId)
2197                            ? mBackCameraId : mFrontCameraId));
2198                    onSharedPreferenceChanged();
2199                    return true;
2200                }
2201            }).setIcon(android.R.drawable.ic_menu_camera);
2202        }
2203    }
2204
2205    private void switchCameraId(int cameraId) {
2206        if (mPausing || !isCameraIdle()) return;
2207        mCameraId = cameraId;
2208
2209        stopPreview();
2210        closeCamera();
2211
2212        // Remove the messages in the event queue.
2213        mHandler.removeMessages(RESTART_PREVIEW);
2214
2215        // Reset variables
2216        mJpegPictureCallbackTime = 0;
2217        mZoomValue = 0;
2218
2219        // Reload the preferences.
2220        mPreferences.setLocalId(this, mCameraId);
2221        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
2222
2223        // Restart the preview.
2224        resetExposureCompensation();
2225        if (!restartPreview()) return;
2226
2227        initializeZoom();
2228
2229        // Reload the UI.
2230        if (mFirstTimeInitialized) {
2231            initializeHeadUpDisplay();
2232        }
2233        initializeControlPanel();
2234    }
2235
2236    private boolean switchToVideoMode() {
2237        if (isFinishing() || !isCameraIdle()) return false;
2238        MenuHelper.gotoVideoMode(Camera.this);
2239        mHandler.removeMessages(FIRST_TIME_INIT);
2240        finish();
2241        return true;
2242    }
2243
2244    public boolean onSwitchChanged(Switcher source, boolean onOff) {
2245        if (onOff == SWITCH_VIDEO) {
2246            return switchToVideoMode();
2247        } else {
2248            return true;
2249        }
2250    }
2251
2252    private void onSharedPreferenceChanged() {
2253        // ignore the events after "onPause()"
2254        if (mPausing) return;
2255
2256        boolean recordLocation;
2257
2258        recordLocation = RecordLocationPreference.get(
2259                mPreferences, getContentResolver());
2260
2261        if (mRecordLocation != recordLocation) {
2262            mRecordLocation = recordLocation;
2263            if (mRecordLocation) {
2264                startReceivingLocationUpdates();
2265            } else {
2266                stopReceivingLocationUpdates();
2267            }
2268        }
2269        int cameraId = CameraSettings.readPreferredCameraId(mPreferences);
2270        if (mCameraId != cameraId) {
2271            switchCameraId(cameraId);
2272        } else {
2273            setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
2274        }
2275    }
2276
2277    @Override
2278    public void onUserInteraction() {
2279        super.onUserInteraction();
2280        keepScreenOnAwhile();
2281    }
2282
2283    private void resetScreenOn() {
2284        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2285        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2286    }
2287
2288    private void keepScreenOnAwhile() {
2289        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2290        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2291        mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
2292    }
2293
2294    private class MyHeadUpDisplayListener implements HeadUpDisplay.Listener {
2295
2296        public void onSharedPreferenceChanged() {
2297            Camera.this.onSharedPreferenceChanged();
2298        }
2299
2300        public void onRestorePreferencesClicked() {
2301            Camera.this.onRestorePreferencesClicked();
2302        }
2303
2304        public void onPopupWindowVisibilityChanged(int visibility) {
2305        }
2306    }
2307
2308    protected void onRestorePreferencesClicked() {
2309        if (mPausing) return;
2310        Runnable runnable = new Runnable() {
2311            public void run() {
2312                if (mHeadUpDisplay != null) {
2313                    mHeadUpDisplay.restorePreferences(mParameters);
2314                }
2315            }
2316        };
2317        MenuHelper.confirmAction(this,
2318                getString(R.string.confirm_restore_title),
2319                getString(R.string.confirm_restore_message),
2320                runnable);
2321    }
2322
2323    private class MyControlPanelListener implements ControlPanel.Listener {
2324        public void onSharedPreferenceChanged() {
2325            Camera.this.onSharedPreferenceChanged();
2326        }
2327    }
2328
2329    private class MyCameraPickerListener implements CameraPicker.Listener {
2330        public void onSharedPreferenceChanged() {
2331            Camera.this.onSharedPreferenceChanged();
2332        }
2333    }
2334}
2335