Camera.java revision 0f405feacb2fa89d22e9fd8cb982cffad14af4a3 
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;
81import android.widget.Button;
82
83import java.io.File;
84import java.io.FileNotFoundException;
85import java.io.FileOutputStream;
86import java.io.IOException;
87import java.io.OutputStream;
88import java.text.SimpleDateFormat;
89import java.util.ArrayList;
90import java.util.Collections;
91import java.util.Date;
92import java.util.HashMap;
93import java.util.List;
94
95/** The Camera activity which can preview and take pictures. */
96public class Camera extends NoSearchActivity implements View.OnClickListener,
97        ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback,
98        Switcher.OnSwitchListener {
99
100    private static final String TAG = "camera";
101
102    private static final int CROP_MSG = 1;
103    private static final int FIRST_TIME_INIT = 2;
104    private static final int RESTART_PREVIEW = 3;
105    private static final int CLEAR_SCREEN_DELAY = 4;
106    private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 5;
107
108    // The subset of parameters we need to update in setCameraParameters().
109    private static final int UPDATE_PARAM_INITIALIZE = 1;
110    private static final int UPDATE_PARAM_ZOOM = 2;
111    private static final int UPDATE_PARAM_PREFERENCE = 4;
112    private static final int UPDATE_PARAM_ALL = -1;
113
114    // When setCameraParametersWhenIdle() is called, we accumulate the subsets
115    // needed to be updated in mUpdateSet.
116    private int mUpdateSet;
117
118    // The brightness settings used when it is set to automatic in the system.
119    // The reason why it is set to 0.7 is just because 1.0 is too bright.
120    private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f;
121
122    private static final int SCREEN_DELAY = 2 * 60 * 1000;
123    private static final int FOCUS_BEEP_VOLUME = 100;
124
125    private static final int ZOOM_STOPPED = 0;
126    private static final int ZOOM_START = 1;
127    private static final int ZOOM_STOPPING = 2;
128
129    private int mZoomState = ZOOM_STOPPED;
130    private boolean mSmoothZoomSupported = false;
131    private int mZoomValue;  // The current zoom value.
132    private int mZoomMax;
133    private int mTargetZoomValue;
134    private ZoomPicker mZoomPicker;
135
136    private Parameters mParameters;
137    private Parameters mInitialParams;
138
139    private MyOrientationEventListener mOrientationListener;
140    // The device orientation in degrees. Default is unknown.
141    private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN;
142    // The orientation compensation for icons and thumbnails.
143    private int mOrientationCompensation = 0;
144    private ComboPreferences mPreferences;
145
146    private static final int IDLE = 1;
147    private static final int SNAPSHOT_IN_PROGRESS = 2;
148
149    private static final boolean SWITCH_CAMERA = true;
150    private static final boolean SWITCH_VIDEO = false;
151
152    private int mStatus = IDLE;
153    private static final String sTempCropFilename = "crop-temp";
154
155    private android.hardware.Camera mCameraDevice;
156    private ContentProviderClient mMediaProviderClient;
157    private SurfaceView mSurfaceView;
158    private SurfaceHolder mSurfaceHolder = null;
159    private ShutterButton mShutterButton;
160    private FocusRectangle mFocusRectangle;
161    private ToneGenerator mFocusToneGenerator;
162    private GestureDetector mPopupGestureDetector;
163    private SwitcherSet mSwitcher;
164    private boolean mStartPreviewFail = false;
165    private View mIndicatorWheel;
166
167    private GLRootView mGLRootView;
168
169    // The last captured picture.
170    private RotateImageView mThumbnailButton;
171
172    // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true.
173    private String mCropValue;
174    private Uri mSaveUri;
175
176    private ImageCapture mImageCapture = null;
177
178    // GPS on-screen indicator
179    private View mGpsNoSignalView;
180    private View mGpsHasSignalView;
181
182    // Front/Back camera pciker for xlarge layout
183    private CameraPicker mCameraPicker;
184
185    /**
186     * An unpublished intent flag requesting to return as soon as capturing
187     * is completed.
188     *
189     * TODO: consider publishing by moving into MediaStore.
190     */
191    private final static String EXTRA_QUICK_CAPTURE =
192            "android.intent.extra.quickCapture";
193
194    private boolean mPreviewing;
195    private boolean mPausing;
196    private boolean mFirstTimeInitialized;
197    private boolean mIsImageCaptureIntent;
198    private boolean mRecordLocation;
199
200    private static final int FOCUS_NOT_STARTED = 0;
201    private static final int FOCUSING = 1;
202    private static final int FOCUSING_SNAP_ON_FINISH = 2;
203    private static final int FOCUS_SUCCESS = 3;
204    private static final int FOCUS_FAIL = 4;
205    private int mFocusState = FOCUS_NOT_STARTED;
206
207    private ContentResolver mContentResolver;
208    private boolean mDidRegister = false;
209
210    private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>();
211
212    private LocationManager mLocationManager = null;
213
214    private final ShutterCallback mShutterCallback = new ShutterCallback();
215    private final PostViewPictureCallback mPostViewPictureCallback =
216            new PostViewPictureCallback();
217    private final RawPictureCallback mRawPictureCallback =
218            new RawPictureCallback();
219    private final AutoFocusCallback mAutoFocusCallback =
220            new AutoFocusCallback();
221    private final ZoomListener mZoomListener = new ZoomListener();
222    private final CameraErrorCallback mErrorCallback = new CameraErrorCallback();
223
224    private long mFocusStartTime;
225    private long mFocusCallbackTime;
226    private long mCaptureStartTime;
227    private long mShutterCallbackTime;
228    private long mPostViewPictureCallbackTime;
229    private long mRawPictureCallbackTime;
230    private long mJpegPictureCallbackTime;
231    private int mPicturesRemaining;
232
233    // These latency time are for the CameraLatency test.
234    public long mAutoFocusTime;
235    public long mShutterLag;
236    public long mShutterToPictureDisplayedTime;
237    public long mPictureDisplayedToJpegCallbackTime;
238    public long mJpegCallbackFinishTime;
239
240    // Focus mode. Options are pref_camera_focusmode_entryvalues.
241    private String mFocusMode;
242    private String mSceneMode;
243
244    private final Handler mHandler = new MainHandler();
245    // xlarge devices use control panel. Other devices use head-up display.
246    private CameraHeadUpDisplay mHeadUpDisplay;
247    private ControlPanel mControlPanel;
248    private PreferenceGroup mPreferenceGroup;
249
250    // multiple cameras support
251    private int mNumberOfCameras;
252    private int mCameraId;
253    private int mFrontCameraId;
254    private int mBackCameraId;
255
256    private boolean mQuickCapture;
257
258    /**
259     * This Handler is used to post message back onto the main thread of the
260     * application
261     */
262    private class MainHandler extends Handler {
263        @Override
264        public void handleMessage(Message msg) {
265            switch (msg.what) {
266                case RESTART_PREVIEW: {
267                    restartPreview();
268                    if (mJpegPictureCallbackTime != 0) {
269                        long now = System.currentTimeMillis();
270                        mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
271                        Log.v(TAG, "mJpegCallbackFinishTime = "
272                                + mJpegCallbackFinishTime + "ms");
273                        mJpegPictureCallbackTime = 0;
274                    }
275                    break;
276                }
277
278                case CLEAR_SCREEN_DELAY: {
279                    getWindow().clearFlags(
280                            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
281                    break;
282                }
283
284                case FIRST_TIME_INIT: {
285                    initializeFirstTime();
286                    break;
287                }
288
289                case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
290                    setCameraParametersWhenIdle(0);
291                    break;
292                }
293            }
294        }
295    }
296
297    private void resetExposureCompensation() {
298        String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
299                CameraSettings.EXPOSURE_DEFAULT_VALUE);
300        if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
301            Editor editor = mPreferences.edit();
302            editor.putString(CameraSettings.KEY_EXPOSURE, "0");
303            editor.apply();
304            if (mHeadUpDisplay != null) {
305                mHeadUpDisplay.reloadPreferences();
306            }
307        }
308    }
309
310    private void keepMediaProviderInstance() {
311        // We want to keep a reference to MediaProvider in camera's lifecycle.
312        // TODO: Utilize mMediaProviderClient instance to replace
313        // ContentResolver calls.
314        if (mMediaProviderClient == null) {
315            mMediaProviderClient = getContentResolver()
316                    .acquireContentProviderClient(MediaStore.AUTHORITY);
317        }
318    }
319
320    // Snapshots can only be taken after this is called. It should be called
321    // once only. We could have done these things in onCreate() but we want to
322    // make preview screen appear as soon as possible.
323    private void initializeFirstTime() {
324        if (mFirstTimeInitialized) return;
325
326        // Create orientation listenter. This should be done first because it
327        // takes some time to get first orientation.
328        mOrientationListener = new MyOrientationEventListener(Camera.this);
329        mOrientationListener.enable();
330
331        // Initialize location sevice.
332        mLocationManager = (LocationManager)
333                getSystemService(Context.LOCATION_SERVICE);
334        mRecordLocation = RecordLocationPreference.get(
335                mPreferences, getContentResolver());
336        initGpsOnScreenIndicator();
337        if (mRecordLocation) startReceivingLocationUpdates();
338
339        keepMediaProviderInstance();
340        checkStorage();
341
342        // Initialize last picture button.
343        mContentResolver = getContentResolver();
344        if (!mIsImageCaptureIntent)  {
345            findViewById(R.id.camera_switch).setOnClickListener(this);
346            initThumbnailButton();
347        }
348
349        // Initialize shutter button.
350        mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
351        mShutterButton.setOnShutterButtonListener(this);
352        mShutterButton.setVisibility(View.VISIBLE);
353
354        mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle);
355        updateFocusIndicator();
356
357        initializeScreenBrightness();
358        installIntentFilter();
359        initializeFocusTone();
360        initializeZoom();
361        // xlarge devices use control panel. Other devices use head-up display.
362        if (mControlPanel == null) {
363            mHeadUpDisplay = new CameraHeadUpDisplay(this);
364            mHeadUpDisplay.setListener(new MyHeadUpDisplayListener());
365            initializeHeadUpDisplay();
366        }
367        mFirstTimeInitialized = true;
368        changeHeadUpDisplayState();
369        addIdleHandler();
370    }
371
372    private void addIdleHandler() {
373        MessageQueue queue = Looper.myQueue();
374        queue.addIdleHandler(new MessageQueue.IdleHandler() {
375            public boolean queueIdle() {
376                ImageManager.ensureOSXCompatibleFolder();
377                return false;
378            }
379        });
380    }
381
382    private void initThumbnailButton() {
383        mThumbnailButton =
384                (RotateImageView) findViewById(R.id.review_thumbnail);
385        if (mThumbnailButton != null) {
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        mThumbnailButton.setVisibility(
413                (mThumbnailButton.getUri() != null) ? View.VISIBLE : View.GONE);
414    }
415
416    private void setLastPictureThumb(byte[] data, int degree, Uri uri) {
417        if (mThumbnailButton == null) return;
418        BitmapFactory.Options options = new BitmapFactory.Options();
419        options.inSampleSize = 16;
420        Bitmap lastPictureThumb =
421                BitmapFactory.decodeByteArray(data, 0, data.length, options);
422        lastPictureThumb = Util.rotate(lastPictureThumb, degree);
423        mThumbnailButton.setData(uri, lastPictureThumb);
424        if (lastPictureThumb != null) {
425            mThumbnailButton.setVisibility(View.VISIBLE);
426        }
427    }
428
429    // If the activity is paused and resumed, this method will be called in
430    // onResume.
431    private void initializeSecondTime() {
432        // Start orientation listener as soon as possible because it takes
433        // some time to get first orientation.
434        mOrientationListener.enable();
435
436        // Start location update if needed.
437        mRecordLocation = RecordLocationPreference.get(
438                mPreferences, getContentResolver());
439        if (mRecordLocation) startReceivingLocationUpdates();
440
441        installIntentFilter();
442        initializeFocusTone();
443        initializeZoom();
444        changeHeadUpDisplayState();
445
446        keepMediaProviderInstance();
447        checkStorage();
448
449        if (!mIsImageCaptureIntent) {
450            updateThumbnailButton();
451        }
452    }
453
454    private void initializeZoom() {
455        if (!mParameters.isZoomSupported()) return;
456
457        mZoomMax = mParameters.getMaxZoom();
458        mSmoothZoomSupported = mParameters.isSmoothZoomSupported();
459        if (mZoomPicker != null) {
460            mZoomPicker.setZoomRatios(getZoomRatios());
461            mZoomPicker.setZoomIndex(mParameters.getZoom());
462            mZoomPicker.setOnZoomChangeListener(
463                    new ZoomPicker.OnZoomChangedListener() {
464                public void onZoomChanged(int index) {
465                    onZoomValueChanged(index);
466                }
467            });
468        }
469
470        mCameraDevice.setZoomChangeListener(mZoomListener);
471    }
472
473    private void onZoomValueChanged(int index) {
474        // Not useful to change zoom value when the activity is paused.
475        if (mPausing) return;
476
477        if (mSmoothZoomSupported) {
478            if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) {
479                mTargetZoomValue = index;
480                if (mZoomState == ZOOM_START) {
481                    mZoomState = ZOOM_STOPPING;
482                    mCameraDevice.stopSmoothZoom();
483                }
484            } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) {
485                mTargetZoomValue = index;
486                mCameraDevice.startSmoothZoom(index);
487                mZoomState = ZOOM_START;
488            }
489        } else {
490            mZoomValue = index;
491            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
492        }
493    }
494
495    private float[] getZoomRatios() {
496        if(!mParameters.isZoomSupported()) return null;
497        List<Integer> zoomRatios = mParameters.getZoomRatios();
498        float result[] = new float[zoomRatios.size()];
499        for (int i = 0, n = result.length; i < n; ++i) {
500            result[i] = (float) zoomRatios.get(i) / 100f;
501        }
502        return result;
503    }
504
505    private int mPopupLocations[] = new int[2];
506    private class PopupGestureListener extends
507            GestureDetector.SimpleOnGestureListener {
508        public boolean onDown(MotionEvent e) {
509            // Check if the popup window is visible.
510            View v = mControlPanel.getActivePopupWindow();
511            if (v == null) return false;
512
513            int x = Math.round(e.getX());
514            int y = Math.round(e.getY());
515
516            // Dismiss the popup window if users touch on the outside.
517            v.getLocationOnScreen(mPopupLocations);
518            if (x < mPopupLocations[0] || x > mPopupLocations[0] + v.getWidth()
519                    || y < mPopupLocations[1] || y > mPopupLocations[1] + v.getHeight()) {
520                mControlPanel.dismissSettingPopup();
521                // Let event fall through.
522            }
523            return false;
524        }
525    }
526
527    @Override
528    public boolean dispatchTouchEvent(MotionEvent m) {
529        // Check if the popup window should be dismissed first.
530        if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) {
531            return true;
532        }
533
534        return super.dispatchTouchEvent(m);
535    }
536
537    LocationListener [] mLocationListeners = new LocationListener[] {
538            new LocationListener(LocationManager.GPS_PROVIDER),
539            new LocationListener(LocationManager.NETWORK_PROVIDER)
540    };
541
542    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
543        @Override
544        public void onReceive(Context context, Intent intent) {
545            String action = intent.getAction();
546            if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
547                    || action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
548                    || action.equals(Intent.ACTION_MEDIA_CHECKING)) {
549                checkStorage();
550            } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
551                checkStorage();
552                if (!mIsImageCaptureIntent)  {
553                    updateThumbnailButton();
554                }
555            }
556        }
557    };
558
559    private void initializeCameraPicker() {
560        mCameraPicker = (CameraPicker) findViewById(R.id.camera_picker);
561        if (mCameraPicker != null) {
562            mCameraPicker.setImageResource(R.drawable.camera_toggle);
563            ListPreference pref = mPreferenceGroup.findPreference(
564                    CameraSettings.KEY_CAMERA_ID);
565            if (pref != null) {
566                mCameraPicker.initialize(pref);
567                mCameraPicker.setListener(new MyCameraPickerListener());
568            }
569        }
570    }
571
572    private void initGpsOnScreenIndicator() {
573        mGpsNoSignalView = findViewById(R.id.onscreen_gps_indicator_no_signal);
574        mGpsHasSignalView = findViewById(R.id.onscreen_gps_indicator_on);
575    }
576
577    private void showGpsOnScreenIndicator(boolean hasSignal) {
578        if (hasSignal) {
579            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
580            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.VISIBLE);
581        } else {
582            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.VISIBLE);
583            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
584        }
585    }
586
587    private void hideGpsOnScreenIndicator() {
588        if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
589        if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
590    }
591
592    private class LocationListener
593            implements android.location.LocationListener {
594        Location mLastLocation;
595        boolean mValid = false;
596        String mProvider;
597
598        public LocationListener(String provider) {
599            mProvider = provider;
600            mLastLocation = new Location(mProvider);
601        }
602
603        public void onLocationChanged(Location newLocation) {
604            if (newLocation.getLatitude() == 0.0
605                    && newLocation.getLongitude() == 0.0) {
606                // Hack to filter out 0.0,0.0 locations
607                return;
608            }
609            // If GPS is available before start camera, we won't get status
610            // update so update GPS indicator when we receive data.
611            if (mRecordLocation
612                    && LocationManager.GPS_PROVIDER.equals(mProvider)) {
613                if (mHeadUpDisplay != null) {
614                    mHeadUpDisplay.setGpsHasSignal(true);
615                }
616                showGpsOnScreenIndicator(true);
617            }
618            mLastLocation.set(newLocation);
619            mValid = true;
620        }
621
622        public void onProviderEnabled(String provider) {
623        }
624
625        public void onProviderDisabled(String provider) {
626            mValid = false;
627        }
628
629        public void onStatusChanged(
630                String provider, int status, Bundle extras) {
631            switch(status) {
632                case LocationProvider.OUT_OF_SERVICE:
633                case LocationProvider.TEMPORARILY_UNAVAILABLE: {
634                    mValid = false;
635                    if (mRecordLocation &&
636                            LocationManager.GPS_PROVIDER.equals(provider)) {
637                        if (mHeadUpDisplay != null) {
638                            mHeadUpDisplay.setGpsHasSignal(false);
639                        }
640                        showGpsOnScreenIndicator(false);
641                    }
642                    break;
643                }
644            }
645        }
646
647        public Location current() {
648            return mValid ? mLastLocation : null;
649        }
650    }
651
652    private final class ShutterCallback
653            implements android.hardware.Camera.ShutterCallback {
654        public void onShutter() {
655            mShutterCallbackTime = System.currentTimeMillis();
656            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
657            Log.v(TAG, "mShutterLag = " + mShutterLag + "ms");
658            clearFocusState();
659        }
660    }
661
662    private final class PostViewPictureCallback implements PictureCallback {
663        public void onPictureTaken(
664                byte [] data, android.hardware.Camera camera) {
665            mPostViewPictureCallbackTime = System.currentTimeMillis();
666            Log.v(TAG, "mShutterToPostViewCallbackTime = "
667                    + (mPostViewPictureCallbackTime - mShutterCallbackTime)
668                    + "ms");
669        }
670    }
671
672    private final class RawPictureCallback implements PictureCallback {
673        public void onPictureTaken(
674                byte [] rawData, android.hardware.Camera camera) {
675            mRawPictureCallbackTime = System.currentTimeMillis();
676            Log.v(TAG, "mShutterToRawCallbackTime = "
677                    + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
678        }
679    }
680
681    private final class JpegPictureCallback implements PictureCallback {
682        Location mLocation;
683
684        public JpegPictureCallback(Location loc) {
685            mLocation = loc;
686        }
687
688        public void onPictureTaken(
689                final byte [] jpegData, final android.hardware.Camera camera) {
690            if (mPausing) {
691                return;
692            }
693
694            mJpegPictureCallbackTime = System.currentTimeMillis();
695            // If postview callback has arrived, the captured image is displayed
696            // in postview callback. If not, the captured image is displayed in
697            // raw picture callback.
698            if (mPostViewPictureCallbackTime != 0) {
699                mShutterToPictureDisplayedTime =
700                        mPostViewPictureCallbackTime - mShutterCallbackTime;
701                mPictureDisplayedToJpegCallbackTime =
702                        mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
703            } else {
704                mShutterToPictureDisplayedTime =
705                        mRawPictureCallbackTime - mShutterCallbackTime;
706                mPictureDisplayedToJpegCallbackTime =
707                        mJpegPictureCallbackTime - mRawPictureCallbackTime;
708            }
709            Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
710                    + mPictureDisplayedToJpegCallbackTime + "ms");
711            enableCameraControls(true);
712
713            if (!mIsImageCaptureIntent) {
714                // We want to show the taken picture for a while, so we wait
715                // for at least 1.2 second before restarting the preview.
716                long delay = 1200 - mPictureDisplayedToJpegCallbackTime;
717                if (delay < 0) {
718                    restartPreview();
719                } else {
720                    mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay);
721                }
722            }
723            mImageCapture.storeImage(jpegData, camera, mLocation);
724
725            // Calculate this in advance of each shot so we don't add to shutter
726            // latency. It's true that someone else could write to the SD card in
727            // the mean time and fill it, but that could have happened between the
728            // shutter press and saving the JPEG too.
729            calculatePicturesRemaining();
730
731            if (mPicturesRemaining < 1) {
732                updateStorageHint(mPicturesRemaining);
733            }
734
735            if (!mHandler.hasMessages(RESTART_PREVIEW)) {
736                long now = System.currentTimeMillis();
737                mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
738                Log.v(TAG, "mJpegCallbackFinishTime = "
739                        + mJpegCallbackFinishTime + "ms");
740                mJpegPictureCallbackTime = 0;
741            }
742        }
743    }
744
745    private final class AutoFocusCallback
746            implements android.hardware.Camera.AutoFocusCallback {
747        public void onAutoFocus(
748                boolean focused, android.hardware.Camera camera) {
749            mFocusCallbackTime = System.currentTimeMillis();
750            mAutoFocusTime = mFocusCallbackTime - mFocusStartTime;
751            Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
752            if (mFocusState == FOCUSING_SNAP_ON_FINISH) {
753                // Take the picture no matter focus succeeds or fails. No need
754                // to play the AF sound if we're about to play the shutter
755                // sound.
756                if (focused) {
757                    mFocusState = FOCUS_SUCCESS;
758                } else {
759                    mFocusState = FOCUS_FAIL;
760                }
761                mImageCapture.onSnap();
762            } else if (mFocusState == FOCUSING) {
763                // User is half-pressing the focus key. Play the focus tone.
764                // Do not take the picture now.
765                ToneGenerator tg = mFocusToneGenerator;
766                if (tg != null) {
767                    tg.startTone(ToneGenerator.TONE_PROP_BEEP2);
768                }
769                if (focused) {
770                    mFocusState = FOCUS_SUCCESS;
771                } else {
772                    mFocusState = FOCUS_FAIL;
773                }
774            } else if (mFocusState == FOCUS_NOT_STARTED) {
775                // User has released the focus key before focus completes.
776                // Do nothing.
777            }
778            updateFocusIndicator();
779        }
780    }
781
782    private final class ZoomListener
783            implements android.hardware.Camera.OnZoomChangeListener {
784        public void onZoomChange(
785                int value, boolean stopped, android.hardware.Camera camera) {
786            Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped);
787            mZoomValue = value;
788            // Keep mParameters up to date. We do not getParameter again in
789            // takePicture. If we do not do this, wrong zoom value will be set.
790            mParameters.setZoom(value);
791            // We only care if the zoom is stopped. mZooming is set to true when
792            // we start smooth zoom.
793            if (stopped && mZoomState != ZOOM_STOPPED) {
794                if (value != mTargetZoomValue) {
795                    mCameraDevice.startSmoothZoom(mTargetZoomValue);
796                    mZoomState = ZOOM_START;
797                } else {
798                    mZoomState = ZOOM_STOPPED;
799                }
800            }
801        }
802    }
803
804    private class ImageCapture {
805
806        private Uri mLastContentUri;
807
808        byte[] mCaptureOnlyData;
809
810        // Returns the rotation degree in the jpeg header.
811        private int storeImage(byte[] data, Location loc) {
812            try {
813                long dateTaken = System.currentTimeMillis();
814                String title = createName(dateTaken);
815                String filename = title + ".jpg";
816                int[] degree = new int[1];
817                mLastContentUri = ImageManager.addImage(
818                        mContentResolver,
819                        title,
820                        dateTaken,
821                        loc, // location from gps/network
822                        ImageManager.CAMERA_IMAGE_BUCKET_NAME, filename,
823                        null, data,
824                        degree);
825                return degree[0];
826            } catch (Exception ex) {
827                Log.e(TAG, "Exception while compressing image.", ex);
828                return 0;
829            }
830        }
831
832        public void storeImage(final byte[] data,
833                android.hardware.Camera camera, Location loc) {
834            if (!mIsImageCaptureIntent) {
835                int degree = storeImage(data, loc);
836                sendBroadcast(new Intent(
837                        "com.android.camera.NEW_PICTURE", mLastContentUri));
838                setLastPictureThumb(data, degree,
839                        mImageCapture.getLastCaptureUri());
840            } else {
841                mCaptureOnlyData = data;
842                if (!mQuickCapture) {
843                    showPostCaptureAlert();
844                } else {
845                    doAttach();
846                }
847            }
848        }
849
850        /**
851         * Initiate the capture of an image.
852         */
853        public void initiate() {
854            if (mCameraDevice == null) {
855                return;
856            }
857
858            capture();
859        }
860
861        public Uri getLastCaptureUri() {
862            return mLastContentUri;
863        }
864
865        public byte[] getLastCaptureData() {
866            return mCaptureOnlyData;
867        }
868
869        private void capture() {
870            mCaptureOnlyData = null;
871
872            // See android.hardware.Camera.Parameters.setRotation for
873            // documentation.
874            int rotation = 0;
875            if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) {
876                CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
877                if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
878                    rotation = (info.orientation - mOrientation + 360) % 360;
879                } else {  // back-facing camera
880                    rotation = (info.orientation + mOrientation) % 360;
881                }
882            }
883            mParameters.setRotation(rotation);
884
885            // Clear previous GPS location from the parameters.
886            mParameters.removeGpsData();
887
888            // We always encode GpsTimeStamp
889            mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000);
890
891            // Set GPS location.
892            Location loc = mRecordLocation ? getCurrentLocation() : null;
893            if (loc != null) {
894                double lat = loc.getLatitude();
895                double lon = loc.getLongitude();
896                boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d);
897
898                if (hasLatLon) {
899                    mParameters.setGpsLatitude(lat);
900                    mParameters.setGpsLongitude(lon);
901                    mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase());
902                    if (loc.hasAltitude()) {
903                        mParameters.setGpsAltitude(loc.getAltitude());
904                    } else {
905                        // for NETWORK_PROVIDER location provider, we may have
906                        // no altitude information, but the driver needs it, so
907                        // we fake one.
908                        mParameters.setGpsAltitude(0);
909                    }
910                    if (loc.getTime() != 0) {
911                        // Location.getTime() is UTC in milliseconds.
912                        // gps-timestamp is UTC in seconds.
913                        long utcTimeSeconds = loc.getTime() / 1000;
914                        mParameters.setGpsTimestamp(utcTimeSeconds);
915                    }
916                } else {
917                    loc = null;
918                }
919            }
920
921            mCameraDevice.setParameters(mParameters);
922
923            mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback,
924                    mPostViewPictureCallback, new JpegPictureCallback(loc));
925            mPreviewing = false;
926        }
927
928        public void onSnap() {
929            // If we are already in the middle of taking a snapshot then ignore.
930            if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) {
931                return;
932            }
933            mCaptureStartTime = System.currentTimeMillis();
934            mPostViewPictureCallbackTime = 0;
935            enableCameraControls(false);
936            mStatus = SNAPSHOT_IN_PROGRESS;
937
938            mImageCapture.initiate();
939        }
940
941        private void clearLastData() {
942            mCaptureOnlyData = null;
943        }
944    }
945
946    private boolean saveDataToFile(String filePath, byte[] data) {
947        FileOutputStream f = null;
948        try {
949            f = new FileOutputStream(filePath);
950            f.write(data);
951        } catch (IOException e) {
952            return false;
953        } finally {
954            MenuHelper.closeSilently(f);
955        }
956        return true;
957    }
958
959    private String createName(long dateTaken) {
960        Date date = new Date(dateTaken);
961        SimpleDateFormat dateFormat = new SimpleDateFormat(
962                getString(R.string.image_file_name_format));
963
964        return dateFormat.format(date);
965    }
966
967    @Override
968    public void onCreate(Bundle icicle) {
969        super.onCreate(icicle);
970
971        mIsImageCaptureIntent = isImageCaptureIntent();
972        if (mIsImageCaptureIntent) {
973            setContentView(R.layout.camera_attach);
974        } else {
975            setContentView(R.layout.camera);
976        }
977        mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview);
978
979        mPreferences = new ComboPreferences(this);
980        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal());
981        mCameraId = CameraSettings.readPreferredCameraId(mPreferences);
982        mPreferences.setLocalId(this, mCameraId);
983        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
984
985        mNumberOfCameras = CameraHolder.instance().getNumberOfCameras();
986        mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
987
988        // we need to reset exposure for the preview
989        resetExposureCompensation();
990        /*
991         * To reduce startup time, we start the preview in another thread.
992         * We make sure the preview is started at the end of onCreate.
993         */
994        Thread startPreviewThread = new Thread(new Runnable() {
995            public void run() {
996                try {
997                    mStartPreviewFail = false;
998                    startPreview();
999                } catch (CameraHardwareException e) {
1000                    // In eng build, we throw the exception so that test tool
1001                    // can detect it and report it
1002                    if ("eng".equals(Build.TYPE)) {
1003                        throw new RuntimeException(e);
1004                    }
1005                    mStartPreviewFail = true;
1006                }
1007            }
1008        });
1009        startPreviewThread.start();
1010
1011        // don't set mSurfaceHolder here. We have it set ONLY within
1012        // surfaceChanged / surfaceDestroyed, other parts of the code
1013        // assume that when it is set, the surface is also set.
1014        SurfaceHolder holder = mSurfaceView.getHolder();
1015        holder.addCallback(this);
1016        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
1017
1018        if (mIsImageCaptureIntent) {
1019            setupCaptureParams();
1020
1021            View reviewControl = findViewById(R.id.review_control);
1022            reviewControl.setVisibility(View.VISIBLE);
1023            reviewControl.findViewById(R.id.btn_cancel).setOnClickListener(this);
1024            reviewControl.findViewById(R.id.btn_retake).setOnClickListener(this);
1025            reviewControl.findViewById(R.id.btn_done).setOnClickListener(this);
1026        } else {
1027            mSwitcher = (SwitcherSet) findViewById(R.id.camera_switch);
1028            mSwitcher.setVisibility(View.VISIBLE);
1029            mSwitcher.setOnSwitchListener(this);
1030        }
1031        mIndicatorWheel = findViewById(R.id.indicator_wheel);
1032
1033        // Make sure preview is started.
1034        try {
1035            startPreviewThread.join();
1036            if (mStartPreviewFail) {
1037                showCameraErrorAndFinish();
1038                return;
1039            }
1040        } catch (InterruptedException ex) {
1041            // ignore
1042        }
1043
1044        mBackCameraId = CameraHolder.instance().getBackCameraId();
1045        mFrontCameraId = CameraHolder.instance().getFrontCameraId();
1046
1047        // Do this after starting preview because it depends on camera
1048        // parameters.
1049        initializeControlPanel();
1050        initializeCameraPicker();
1051
1052        if (mControlPanel != null) {
1053            mZoomPicker = (ZoomPicker) mControlPanel.findViewById(R.id.zoom_picker);
1054            mZoomPicker.setEnabled(true); // disabled initially in xml
1055        }
1056    }
1057
1058    private void changeHeadUpDisplayState() {
1059        if (mHeadUpDisplay == null) return;
1060        // If the camera resumes behind the lock screen, the orientation
1061        // will be portrait. That causes OOM when we try to allocation GPU
1062        // memory for the GLSurfaceView again when the orientation changes. So,
1063        // we delayed initialization of HeadUpDisplay until the orientation
1064        // becomes landscape.
1065        Configuration config = getResources().getConfiguration();
1066        if (config.orientation == Configuration.ORIENTATION_LANDSCAPE
1067                && !mPausing && mFirstTimeInitialized) {
1068            if (mGLRootView == null) attachHeadUpDisplay();
1069        } else if (mGLRootView != null) {
1070            detachHeadUpDisplay();
1071        }
1072    }
1073
1074    private void overrideCameraSettings(final String flashMode,
1075            final String whiteBalance, final String focusMode) {
1076        if (mHeadUpDisplay != null) {
1077            mHeadUpDisplay.overrideSettings(
1078                    CameraSettings.KEY_FLASH_MODE, flashMode,
1079                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1080                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1081        }
1082        if (mControlPanel != null) {
1083            mControlPanel.overrideSettings(
1084                    CameraSettings.KEY_FLASH_MODE, flashMode,
1085                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1086                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1087        }
1088    }
1089
1090    private void updateSceneModeUI() {
1091        // If scene mode is set, we cannot set flash mode, white balance, and
1092        // focus mode, instead, we read it from driver
1093        if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1094            overrideCameraSettings(mParameters.getFlashMode(),
1095                    mParameters.getWhiteBalance(), mParameters.getFocusMode());
1096        } else {
1097            overrideCameraSettings(null, null, null);
1098        }
1099    }
1100
1101    private void loadCameraPreferences() {
1102        CameraSettings settings = new CameraSettings(this, mInitialParams,
1103                mCameraId, CameraHolder.instance().getCameraInfo());
1104        mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences);
1105    }
1106
1107    private void initializeControlPanel() {
1108        mControlPanel = (ControlPanel) findViewById(R.id.control_panel);
1109        if (mControlPanel == null) return;
1110        loadCameraPreferences();
1111
1112        String[] keys = new String[]{CameraSettings.KEY_FLASH_MODE,
1113            CameraSettings.KEY_WHITE_BALANCE,
1114            CameraSettings.KEY_COLOR_EFFECT,
1115            CameraSettings.KEY_SCENE_MODE};
1116        mControlPanel.initialize(this, mPreferenceGroup, keys, true);
1117        mControlPanel.setListener(new MyControlPanelListener());
1118        mPopupGestureDetector = new GestureDetector(this,
1119                new PopupGestureListener());
1120        updateSceneModeUI();
1121    }
1122
1123    private void initializeHeadUpDisplay() {
1124        if (mHeadUpDisplay == null) return;
1125        loadCameraPreferences();
1126
1127        // If we have zoom picker, do not show zoom control on head-up display.
1128        float[] zoomRatios = null;
1129        if (mZoomPicker == null) zoomRatios = getZoomRatios();
1130        mHeadUpDisplay.initialize(this, mPreferenceGroup,
1131                zoomRatios, mOrientationCompensation);
1132        if (mZoomPicker == null && mParameters.isZoomSupported()) {
1133            mHeadUpDisplay.setZoomListener(new ZoomControllerListener() {
1134                public void onZoomChanged(
1135                        int index, float ratio, boolean isMoving) {
1136                    onZoomValueChanged(index);
1137                }
1138            });
1139        }
1140        updateSceneModeUI();
1141    }
1142
1143    private void attachHeadUpDisplay() {
1144        mHeadUpDisplay.setOrientation(mOrientationCompensation);
1145        if (mParameters.isZoomSupported()) {
1146            mHeadUpDisplay.setZoomIndex(mZoomValue);
1147        }
1148        ViewGroup frame = (ViewGroup) findViewById(R.id.frame);
1149        mGLRootView = new GLRootView(this);
1150        mGLRootView.setContentPane(mHeadUpDisplay);
1151        frame.addView(mGLRootView);
1152    }
1153
1154    private void detachHeadUpDisplay() {
1155        mHeadUpDisplay.setGpsHasSignal(false);
1156        mHeadUpDisplay.collapse();
1157        ((ViewGroup) mGLRootView.getParent()).removeView(mGLRootView);
1158        mGLRootView = null;
1159    }
1160
1161    private boolean collapseCameraControls() {
1162        if (mHeadUpDisplay != null && mHeadUpDisplay.collapse()) {
1163            return true;
1164        }
1165        if (mControlPanel != null && mControlPanel.dismissSettingPopup()) {
1166            return true;
1167        }
1168        return false;
1169    }
1170
1171    private void enableCameraControls(boolean enable) {
1172        if (mHeadUpDisplay != null) mHeadUpDisplay.setEnabled(enable);
1173        if (mControlPanel != null) mControlPanel.setEnabled(enable);
1174    }
1175
1176    public static int roundOrientation(int orientation) {
1177        return ((orientation + 45) / 90 * 90) % 360;
1178    }
1179
1180    private class MyOrientationEventListener
1181            extends OrientationEventListener {
1182        public MyOrientationEventListener(Context context) {
1183            super(context);
1184        }
1185
1186        @Override
1187        public void onOrientationChanged(int orientation) {
1188            // We keep the last known orientation. So if the user first orient
1189            // the camera then point the camera to floor or sky, we still have
1190            // the correct orientation.
1191            if (orientation == ORIENTATION_UNKNOWN) return;
1192            mOrientation = roundOrientation(orientation);
1193            // When the screen is unlocked, display rotation may change. Always
1194            // calculate the up-to-date orientationCompensation.
1195            int orientationCompensation = mOrientation
1196                    + Util.getDisplayRotation(Camera.this);
1197            if (mOrientationCompensation != orientationCompensation) {
1198                mOrientationCompensation = orientationCompensation;
1199                if (!mIsImageCaptureIntent) {
1200                    setOrientationIndicator(mOrientationCompensation);
1201                }
1202                if (mHeadUpDisplay != null) {
1203                    mHeadUpDisplay.setOrientation(mOrientationCompensation);
1204                }
1205            }
1206        }
1207    }
1208
1209    private void setOrientationIndicator(int degree) {
1210        RotateImageView icon = (RotateImageView) findViewById(
1211                R.id.review_thumbnail);
1212        if (icon != null) icon.setDegree(degree);
1213
1214        icon = (RotateImageView) findViewById(R.id.camera_switch_icon);
1215        if (icon != null) icon.setDegree(degree);
1216        icon = (RotateImageView) findViewById(R.id.video_switch_icon);
1217        if (icon != null) icon.setDegree(degree);
1218    }
1219
1220    @Override
1221    public void onStart() {
1222        super.onStart();
1223        if (!mIsImageCaptureIntent) {
1224            mSwitcher.setSwitch(SWITCH_CAMERA);
1225        }
1226    }
1227
1228    @Override
1229    public void onStop() {
1230        super.onStop();
1231        if (mMediaProviderClient != null) {
1232            mMediaProviderClient.release();
1233            mMediaProviderClient = null;
1234        }
1235    }
1236
1237    private void checkStorage() {
1238        calculatePicturesRemaining();
1239        updateStorageHint(mPicturesRemaining);
1240    }
1241
1242    public void onClick(View v) {
1243        switch (v.getId()) {
1244            case R.id.btn_retake:
1245                hidePostCaptureAlert();
1246                restartPreview();
1247                break;
1248            case R.id.review_thumbnail:
1249                if (isCameraIdle()) {
1250                    viewImage(mThumbnailButton);
1251                }
1252                break;
1253            case R.id.btn_done:
1254                doAttach();
1255                break;
1256            case R.id.btn_cancel:
1257                doCancel();
1258                break;
1259            case R.id.btn_gallery:
1260                gotoGallery();
1261                break;
1262        }
1263    }
1264
1265    private Bitmap createCaptureBitmap(byte[] data) {
1266        // This is really stupid...we just want to read the orientation in
1267        // the jpeg header.
1268        String filepath = ImageManager.getTempJpegPath();
1269        int degree = 0;
1270        if (saveDataToFile(filepath, data)) {
1271            degree = ImageManager.getExifOrientation(filepath);
1272            new File(filepath).delete();
1273        }
1274
1275        // Limit to 50k pixels so we can return it in the intent.
1276        Bitmap bitmap = Util.makeBitmap(data, 50 * 1024);
1277        bitmap = Util.rotate(bitmap, degree);
1278        return bitmap;
1279    }
1280
1281    private void doAttach() {
1282        if (mPausing) {
1283            return;
1284        }
1285
1286        byte[] data = mImageCapture.getLastCaptureData();
1287
1288        if (mCropValue == null) {
1289            // First handle the no crop case -- just return the value.  If the
1290            // caller specifies a "save uri" then write the data to it's
1291            // stream. Otherwise, pass back a scaled down version of the bitmap
1292            // directly in the extras.
1293            if (mSaveUri != null) {
1294                OutputStream outputStream = null;
1295                try {
1296                    outputStream = mContentResolver.openOutputStream(mSaveUri);
1297                    outputStream.write(data);
1298                    outputStream.close();
1299
1300                    setResult(RESULT_OK);
1301                    finish();
1302                } catch (IOException ex) {
1303                    // ignore exception
1304                } finally {
1305                    Util.closeSilently(outputStream);
1306                }
1307            } else {
1308                Bitmap bitmap = createCaptureBitmap(data);
1309                setResult(RESULT_OK,
1310                        new Intent("inline-data").putExtra("data", bitmap));
1311                finish();
1312            }
1313        } else {
1314            // Save the image to a temp file and invoke the cropper
1315            Uri tempUri = null;
1316            FileOutputStream tempStream = null;
1317            try {
1318                File path = getFileStreamPath(sTempCropFilename);
1319                path.delete();
1320                tempStream = openFileOutput(sTempCropFilename, 0);
1321                tempStream.write(data);
1322                tempStream.close();
1323                tempUri = Uri.fromFile(path);
1324            } catch (FileNotFoundException ex) {
1325                setResult(Activity.RESULT_CANCELED);
1326                finish();
1327                return;
1328            } catch (IOException ex) {
1329                setResult(Activity.RESULT_CANCELED);
1330                finish();
1331                return;
1332            } finally {
1333                Util.closeSilently(tempStream);
1334            }
1335
1336            Bundle newExtras = new Bundle();
1337            if (mCropValue.equals("circle")) {
1338                newExtras.putString("circleCrop", "true");
1339            }
1340            if (mSaveUri != null) {
1341                newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
1342            } else {
1343                newExtras.putBoolean("return-data", true);
1344            }
1345
1346            Intent cropIntent = new Intent("com.android.camera.action.CROP");
1347
1348            cropIntent.setData(tempUri);
1349            cropIntent.putExtras(newExtras);
1350
1351            startActivityForResult(cropIntent, CROP_MSG);
1352        }
1353    }
1354
1355    private void doCancel() {
1356        setResult(RESULT_CANCELED, new Intent());
1357        finish();
1358    }
1359
1360    public void onShutterButtonFocus(ShutterButton button, boolean pressed) {
1361        if (mPausing) {
1362            return;
1363        }
1364        switch (button.getId()) {
1365            case R.id.shutter_button:
1366                doFocus(pressed);
1367                break;
1368        }
1369    }
1370
1371    public void onShutterButtonClick(ShutterButton button) {
1372        if (mPausing) {
1373            return;
1374        }
1375        switch (button.getId()) {
1376            case R.id.shutter_button:
1377                doSnap();
1378                break;
1379        }
1380    }
1381
1382    private OnScreenHint mStorageHint;
1383
1384    private void updateStorageHint(int remaining) {
1385        String noStorageText = null;
1386
1387        if (remaining == MenuHelper.NO_STORAGE_ERROR) {
1388            String state = Environment.getExternalStorageState();
1389            if (state == Environment.MEDIA_CHECKING) {
1390                noStorageText = getString(R.string.preparing_sd);
1391            } else {
1392                noStorageText = getString(R.string.no_storage);
1393            }
1394        } else if (remaining == MenuHelper.CANNOT_STAT_ERROR) {
1395            noStorageText = getString(R.string.access_sd_fail);
1396        } else if (remaining < 1) {
1397            noStorageText = getString(R.string.not_enough_space);
1398        }
1399
1400        if (noStorageText != null) {
1401            if (mStorageHint == null) {
1402                mStorageHint = OnScreenHint.makeText(this, noStorageText);
1403            } else {
1404                mStorageHint.setText(noStorageText);
1405            }
1406            mStorageHint.show();
1407        } else if (mStorageHint != null) {
1408            mStorageHint.cancel();
1409            mStorageHint = null;
1410        }
1411    }
1412
1413    private void installIntentFilter() {
1414        // install an intent filter to receive SD card related events.
1415        IntentFilter intentFilter =
1416                new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
1417        intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
1418        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
1419        intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
1420        intentFilter.addDataScheme("file");
1421        registerReceiver(mReceiver, intentFilter);
1422        mDidRegister = true;
1423    }
1424
1425    private void initializeFocusTone() {
1426        // Initialize focus tone generator.
1427        try {
1428            mFocusToneGenerator = new ToneGenerator(
1429                    AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME);
1430        } catch (Throwable ex) {
1431            Log.w(TAG, "Exception caught while creating tone generator: ", ex);
1432            mFocusToneGenerator = null;
1433        }
1434    }
1435
1436    private void initializeScreenBrightness() {
1437        Window win = getWindow();
1438        // Overright the brightness settings if it is automatic
1439        int mode = Settings.System.getInt(
1440                getContentResolver(),
1441                Settings.System.SCREEN_BRIGHTNESS_MODE,
1442                Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
1443        if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {
1444            WindowManager.LayoutParams winParams = win.getAttributes();
1445            winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS;
1446            win.setAttributes(winParams);
1447        }
1448    }
1449
1450    @Override
1451    protected void onResume() {
1452        super.onResume();
1453
1454        mPausing = false;
1455        mJpegPictureCallbackTime = 0;
1456        mZoomValue = 0;
1457        mImageCapture = new ImageCapture();
1458
1459        // Start the preview if it is not started.
1460        if (!mPreviewing && !mStartPreviewFail) {
1461            resetExposureCompensation();
1462            if (!restartPreview()) return;
1463        }
1464
1465        if (mSurfaceHolder != null) {
1466            // If first time initialization is not finished, put it in the
1467            // message queue.
1468            if (!mFirstTimeInitialized) {
1469                mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1470            } else {
1471                initializeSecondTime();
1472            }
1473        }
1474        keepScreenOnAwhile();
1475    }
1476
1477    @Override
1478    public void onConfigurationChanged(Configuration config) {
1479        super.onConfigurationChanged(config);
1480        changeHeadUpDisplayState();
1481    }
1482
1483    private static ImageManager.DataLocation dataLocation() {
1484        return ImageManager.DataLocation.EXTERNAL;
1485    }
1486
1487    @Override
1488    protected void onPause() {
1489        mPausing = true;
1490        stopPreview();
1491        // Close the camera now because other activities may need to use it.
1492        closeCamera();
1493        resetScreenOn();
1494        collapseCameraControls();
1495        changeHeadUpDisplayState();
1496
1497        if (mFirstTimeInitialized) {
1498            mOrientationListener.disable();
1499            if (!mIsImageCaptureIntent) {
1500                if (mThumbnailButton != null) {
1501                    mThumbnailButton.storeData(
1502                            ImageManager.getLastImageThumbPath());
1503                }
1504            }
1505            hidePostCaptureAlert();
1506        }
1507
1508        if (mDidRegister) {
1509            unregisterReceiver(mReceiver);
1510            mDidRegister = false;
1511        }
1512        stopReceivingLocationUpdates();
1513
1514        if (mFocusToneGenerator != null) {
1515            mFocusToneGenerator.release();
1516            mFocusToneGenerator = null;
1517        }
1518
1519        if (mStorageHint != null) {
1520            mStorageHint.cancel();
1521            mStorageHint = null;
1522        }
1523
1524        // If we are in an image capture intent and has taken
1525        // a picture, we just clear it in onPause.
1526        mImageCapture.clearLastData();
1527        mImageCapture = null;
1528
1529        // Remove the messages in the event queue.
1530        mHandler.removeMessages(RESTART_PREVIEW);
1531        mHandler.removeMessages(FIRST_TIME_INIT);
1532
1533        super.onPause();
1534    }
1535
1536    @Override
1537    protected void onActivityResult(
1538            int requestCode, int resultCode, Intent data) {
1539        switch (requestCode) {
1540            case CROP_MSG: {
1541                Intent intent = new Intent();
1542                if (data != null) {
1543                    Bundle extras = data.getExtras();
1544                    if (extras != null) {
1545                        intent.putExtras(extras);
1546                    }
1547                }
1548                setResult(resultCode, intent);
1549                finish();
1550
1551                File path = getFileStreamPath(sTempCropFilename);
1552                path.delete();
1553
1554                break;
1555            }
1556        }
1557    }
1558
1559    private boolean canTakePicture() {
1560        return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0);
1561    }
1562
1563    private void autoFocus() {
1564        // Initiate autofocus only when preview is started and snapshot is not
1565        // in progress.
1566        if (canTakePicture()) {
1567            enableCameraControls(false);
1568            Log.v(TAG, "Start autofocus.");
1569            mFocusStartTime = System.currentTimeMillis();
1570            mFocusState = FOCUSING;
1571            updateFocusIndicator();
1572            mCameraDevice.autoFocus(mAutoFocusCallback);
1573        }
1574    }
1575
1576    private void cancelAutoFocus() {
1577        // User releases half-pressed focus key.
1578        if (mStatus != SNAPSHOT_IN_PROGRESS && (mFocusState == FOCUSING
1579                || mFocusState == FOCUS_SUCCESS || mFocusState == FOCUS_FAIL)) {
1580            Log.v(TAG, "Cancel autofocus.");
1581            enableCameraControls(true);
1582            mCameraDevice.cancelAutoFocus();
1583        }
1584        if (mFocusState != FOCUSING_SNAP_ON_FINISH) {
1585            clearFocusState();
1586        }
1587    }
1588
1589    private void clearFocusState() {
1590        mFocusState = FOCUS_NOT_STARTED;
1591        updateFocusIndicator();
1592    }
1593
1594    private void updateFocusIndicator() {
1595        if (mFocusRectangle == null) return;
1596
1597        if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) {
1598            mFocusRectangle.showStart();
1599        } else if (mFocusState == FOCUS_SUCCESS) {
1600            mFocusRectangle.showSuccess();
1601        } else if (mFocusState == FOCUS_FAIL) {
1602            mFocusRectangle.showFail();
1603        } else {
1604            mFocusRectangle.clear();
1605        }
1606    }
1607
1608    @Override
1609    public void onBackPressed() {
1610        if (!isCameraIdle()) {
1611            // ignore backs while we're taking a picture
1612            return;
1613        } else if (!collapseCameraControls()) {
1614            super.onBackPressed();
1615        }
1616    }
1617
1618    @Override
1619    public boolean onKeyDown(int keyCode, KeyEvent event) {
1620        switch (keyCode) {
1621            case KeyEvent.KEYCODE_FOCUS:
1622                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1623                    doFocus(true);
1624                }
1625                return true;
1626            case KeyEvent.KEYCODE_CAMERA:
1627                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1628                    doSnap();
1629                }
1630                return true;
1631            case KeyEvent.KEYCODE_DPAD_CENTER:
1632                // If we get a dpad center event without any focused view, move
1633                // the focus to the shutter button and press it.
1634                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1635                    // Start auto-focus immediately to reduce shutter lag. After
1636                    // the shutter button gets the focus, doFocus() will be
1637                    // called again but it is fine.
1638                    if (collapseCameraControls()) return true;
1639                    doFocus(true);
1640                    if (mShutterButton.isInTouchMode()) {
1641                        mShutterButton.requestFocusFromTouch();
1642                    } else {
1643                        mShutterButton.requestFocus();
1644                    }
1645                    mShutterButton.setPressed(true);
1646                }
1647                return true;
1648        }
1649
1650        return super.onKeyDown(keyCode, event);
1651    }
1652
1653    @Override
1654    public boolean onKeyUp(int keyCode, KeyEvent event) {
1655        switch (keyCode) {
1656            case KeyEvent.KEYCODE_FOCUS:
1657                if (mFirstTimeInitialized) {
1658                    doFocus(false);
1659                }
1660                return true;
1661        }
1662        return super.onKeyUp(keyCode, event);
1663    }
1664
1665    private void doSnap() {
1666        if (collapseCameraControls()) return;
1667
1668        Log.v(TAG, "doSnap: mFocusState=" + mFocusState);
1669        // If the user has half-pressed the shutter and focus is completed, we
1670        // can take the photo right away. If the focus mode is infinity, we can
1671        // also take the photo.
1672        if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1673                || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1674                || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF)
1675                || (mFocusState == FOCUS_SUCCESS
1676                || mFocusState == FOCUS_FAIL)) {
1677            mImageCapture.onSnap();
1678        } else if (mFocusState == FOCUSING) {
1679            // Half pressing the shutter (i.e. the focus button event) will
1680            // already have requested AF for us, so just request capture on
1681            // focus here.
1682            mFocusState = FOCUSING_SNAP_ON_FINISH;
1683        } else if (mFocusState == FOCUS_NOT_STARTED) {
1684            // Focus key down event is dropped for some reasons. Just ignore.
1685        }
1686    }
1687
1688    private void doFocus(boolean pressed) {
1689        // Do the focus if the mode is not infinity.
1690        if (collapseCameraControls()) return;
1691        if (!(mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1692                  || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1693                  || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF))) {
1694            if (pressed) {  // Focus key down.
1695                autoFocus();
1696            } else {  // Focus key up.
1697                cancelAutoFocus();
1698            }
1699        }
1700    }
1701
1702    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
1703        // Make sure we have a surface in the holder before proceeding.
1704        if (holder.getSurface() == null) {
1705            Log.d(TAG, "holder.getSurface() == null");
1706            return;
1707        }
1708
1709        // We need to save the holder for later use, even when the mCameraDevice
1710        // is null. This could happen if onResume() is invoked after this
1711        // function.
1712        mSurfaceHolder = holder;
1713
1714        // The mCameraDevice will be null if it fails to connect to the camera
1715        // hardware. In this case we will show a dialog and then finish the
1716        // activity, so it's OK to ignore it.
1717        if (mCameraDevice == null) return;
1718
1719        // Sometimes surfaceChanged is called after onPause or before onResume.
1720        // Ignore it.
1721        if (mPausing || isFinishing()) return;
1722
1723        if (mPreviewing && holder.isCreating()) {
1724            // Set preview display if the surface is being created and preview
1725            // was already started. That means preview display was set to null
1726            // and we need to set it now.
1727            setPreviewDisplay(holder);
1728        } else {
1729            // 1. Restart the preview if the size of surface was changed. The
1730            // framework may not support changing preview display on the fly.
1731            // 2. Start the preview now if surface was destroyed and preview
1732            // stopped.
1733            restartPreview();
1734        }
1735
1736        // If first time initialization is not finished, send a message to do
1737        // it later. We want to finish surfaceChanged as soon as possible to let
1738        // user see preview first.
1739        if (!mFirstTimeInitialized) {
1740            mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1741        } else {
1742            initializeSecondTime();
1743        }
1744    }
1745
1746    public void surfaceCreated(SurfaceHolder holder) {
1747    }
1748
1749    public void surfaceDestroyed(SurfaceHolder holder) {
1750        stopPreview();
1751        mSurfaceHolder = null;
1752    }
1753
1754    private void closeCamera() {
1755        if (mCameraDevice != null) {
1756            CameraHolder.instance().release();
1757            mCameraDevice.setZoomChangeListener(null);
1758            mCameraDevice = null;
1759            mPreviewing = false;
1760        }
1761    }
1762
1763    private void ensureCameraDevice() throws CameraHardwareException {
1764        if (mCameraDevice == null) {
1765            mCameraDevice = CameraHolder.instance().open(mCameraId);
1766            mInitialParams = mCameraDevice.getParameters();
1767        }
1768    }
1769
1770    private void showCameraErrorAndFinish() {
1771        Resources ress = getResources();
1772        Util.showFatalErrorAndFinish(Camera.this,
1773                ress.getString(R.string.camera_error_title),
1774                ress.getString(R.string.cannot_connect_camera));
1775    }
1776
1777    private boolean restartPreview() {
1778        try {
1779            startPreview();
1780        } catch (CameraHardwareException e) {
1781            showCameraErrorAndFinish();
1782            return false;
1783        }
1784        return true;
1785    }
1786
1787    private void setPreviewDisplay(SurfaceHolder holder) {
1788        try {
1789            mCameraDevice.setPreviewDisplay(holder);
1790        } catch (Throwable ex) {
1791            closeCamera();
1792            throw new RuntimeException("setPreviewDisplay failed", ex);
1793        }
1794    }
1795
1796    private void startPreview() throws CameraHardwareException {
1797        if (mPausing || isFinishing()) return;
1798
1799        ensureCameraDevice();
1800        mCameraDevice.setErrorCallback(mErrorCallback);
1801
1802        // If we're previewing already, stop the preview first (this will blank
1803        // the screen).
1804        if (mPreviewing) stopPreview();
1805
1806        setPreviewDisplay(mSurfaceHolder);
1807        Util.setCameraDisplayOrientation(this, mCameraId, mCameraDevice);
1808        setCameraParameters(UPDATE_PARAM_ALL);
1809
1810
1811        try {
1812            Log.v(TAG, "startPreview");
1813            mCameraDevice.startPreview();
1814        } catch (Throwable ex) {
1815            closeCamera();
1816            throw new RuntimeException("startPreview failed", ex);
1817        }
1818        mPreviewing = true;
1819        mZoomState = ZOOM_STOPPED;
1820        mStatus = IDLE;
1821    }
1822
1823    private void stopPreview() {
1824        if (mCameraDevice != null && mPreviewing) {
1825            Log.v(TAG, "stopPreview");
1826            mCameraDevice.stopPreview();
1827        }
1828        mPreviewing = false;
1829        // If auto focus was in progress, it would have been canceled.
1830        clearFocusState();
1831    }
1832
1833    private static boolean isSupported(String value, List<String> supported) {
1834        return supported == null ? false : supported.indexOf(value) >= 0;
1835    }
1836
1837    private void updateCameraParametersInitialize() {
1838        // Reset preview frame rate to the maximum because it may be lowered by
1839        // video camera application.
1840        List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates();
1841        if (frameRates != null) {
1842            Integer max = Collections.max(frameRates);
1843            mParameters.setPreviewFrameRate(max);
1844        }
1845
1846    }
1847
1848    private void updateCameraParametersZoom() {
1849        // Set zoom.
1850        if (mParameters.isZoomSupported()) {
1851            mParameters.setZoom(mZoomValue);
1852        }
1853    }
1854
1855    private void updateCameraParametersPreference() {
1856        // Set picture size.
1857        String pictureSize = mPreferences.getString(
1858                CameraSettings.KEY_PICTURE_SIZE, null);
1859        if (pictureSize == null) {
1860            CameraSettings.initialCameraPictureSize(this, mParameters);
1861        } else {
1862            List<Size> supported = mParameters.getSupportedPictureSizes();
1863            CameraSettings.setCameraPictureSize(
1864                    pictureSize, supported, mParameters);
1865        }
1866
1867        // Set the preview frame aspect ratio according to the picture size.
1868        Size size = mParameters.getPictureSize();
1869        PreviewFrameLayout frameLayout =
1870                (PreviewFrameLayout) findViewById(R.id.frame_layout);
1871        frameLayout.setAspectRatio((double) size.width / size.height);
1872
1873        // Set a preview size that is closest to the viewfinder height and has
1874        // the right aspect ratio.
1875        List<Size> sizes = mParameters.getSupportedPreviewSizes();
1876        Size optimalSize = Util.getOptimalPreviewSize(this,
1877                sizes, (double) size.width / size.height);
1878        if (optimalSize != null) {
1879            Size original = mParameters.getPreviewSize();
1880            if (!original.equals(optimalSize)) {
1881                mParameters.setPreviewSize(optimalSize.width, optimalSize.height);
1882
1883                // Zoom related settings will be changed for different preview
1884                // sizes, so set and read the parameters to get lastest values
1885                mCameraDevice.setParameters(mParameters);
1886                mParameters = mCameraDevice.getParameters();
1887            }
1888        }
1889
1890        // Since change scene mode may change supported values,
1891        // Set scene mode first,
1892        mSceneMode = mPreferences.getString(
1893                CameraSettings.KEY_SCENE_MODE,
1894                getString(R.string.pref_camera_scenemode_default));
1895        if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
1896            if (!mParameters.getSceneMode().equals(mSceneMode)) {
1897                mParameters.setSceneMode(mSceneMode);
1898                mCameraDevice.setParameters(mParameters);
1899
1900                // Setting scene mode will change the settings of flash mode,
1901                // white balance, and focus mode. Here we read back the
1902                // parameters, so we can know those settings.
1903                mParameters = mCameraDevice.getParameters();
1904            }
1905        } else {
1906            mSceneMode = mParameters.getSceneMode();
1907            if (mSceneMode == null) {
1908                mSceneMode = Parameters.SCENE_MODE_AUTO;
1909            }
1910        }
1911
1912        // Set JPEG quality.
1913        String jpegQuality = mPreferences.getString(
1914                CameraSettings.KEY_JPEG_QUALITY,
1915                getString(R.string.pref_camera_jpegquality_default));
1916        mParameters.setJpegQuality(JpegEncodingQualityMappings.getQualityNumber(jpegQuality));
1917
1918        // For the following settings, we need to check if the settings are
1919        // still supported by latest driver, if not, ignore the settings.
1920
1921        // Set color effect parameter.
1922        String colorEffect = mPreferences.getString(
1923                CameraSettings.KEY_COLOR_EFFECT,
1924                getString(R.string.pref_camera_coloreffect_default));
1925        if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) {
1926            mParameters.setColorEffect(colorEffect);
1927        }
1928
1929        // Set exposure compensation
1930        String exposure = mPreferences.getString(
1931                CameraSettings.KEY_EXPOSURE,
1932                getString(R.string.pref_exposure_default));
1933        try {
1934            int value = Integer.parseInt(exposure);
1935            int max = mParameters.getMaxExposureCompensation();
1936            int min = mParameters.getMinExposureCompensation();
1937            if (value >= min && value <= max) {
1938                mParameters.setExposureCompensation(value);
1939            } else {
1940                Log.w(TAG, "invalid exposure range: " + exposure);
1941            }
1942        } catch (NumberFormatException e) {
1943            Log.w(TAG, "invalid exposure: " + exposure);
1944        }
1945
1946        if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1947            // Set flash mode.
1948            String flashMode = mPreferences.getString(
1949                    CameraSettings.KEY_FLASH_MODE,
1950                    getString(R.string.pref_camera_flashmode_default));
1951            List<String> supportedFlash = mParameters.getSupportedFlashModes();
1952            if (isSupported(flashMode, supportedFlash)) {
1953                mParameters.setFlashMode(flashMode);
1954            } else {
1955                flashMode = mParameters.getFlashMode();
1956                if (flashMode == null) {
1957                    flashMode = getString(
1958                            R.string.pref_camera_flashmode_no_flash);
1959                }
1960            }
1961
1962            // Set white balance parameter.
1963            String whiteBalance = mPreferences.getString(
1964                    CameraSettings.KEY_WHITE_BALANCE,
1965                    getString(R.string.pref_camera_whitebalance_default));
1966            if (isSupported(whiteBalance,
1967                    mParameters.getSupportedWhiteBalance())) {
1968                mParameters.setWhiteBalance(whiteBalance);
1969            } else {
1970                whiteBalance = mParameters.getWhiteBalance();
1971                if (whiteBalance == null) {
1972                    whiteBalance = Parameters.WHITE_BALANCE_AUTO;
1973                }
1974            }
1975
1976            // Set focus mode.
1977            mFocusMode = mPreferences.getString(
1978                    CameraSettings.KEY_FOCUS_MODE,
1979                    getString(R.string.pref_camera_focusmode_default));
1980            if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) {
1981                mParameters.setFocusMode(mFocusMode);
1982            } else {
1983                mFocusMode = mParameters.getFocusMode();
1984                if (mFocusMode == null) {
1985                    mFocusMode = Parameters.FOCUS_MODE_AUTO;
1986                }
1987            }
1988        } else {
1989            mFocusMode = mParameters.getFocusMode();
1990        }
1991    }
1992
1993    // We separate the parameters into several subsets, so we can update only
1994    // the subsets actually need updating. The PREFERENCE set needs extra
1995    // locking because the preference can be changed from GLThread as well.
1996    private void setCameraParameters(int updateSet) {
1997        mParameters = mCameraDevice.getParameters();
1998
1999        if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
2000            updateCameraParametersInitialize();
2001        }
2002
2003        if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
2004            updateCameraParametersZoom();
2005        }
2006
2007        if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
2008            updateCameraParametersPreference();
2009        }
2010
2011        mCameraDevice.setParameters(mParameters);
2012    }
2013
2014    // If the Camera is idle, update the parameters immediately, otherwise
2015    // accumulate them in mUpdateSet and update later.
2016    private void setCameraParametersWhenIdle(int additionalUpdateSet) {
2017        mUpdateSet |= additionalUpdateSet;
2018        if (mCameraDevice == null) {
2019            // We will update all the parameters when we open the device, so
2020            // we don't need to do anything now.
2021            mUpdateSet = 0;
2022            return;
2023        } else if (isCameraIdle()) {
2024            setCameraParameters(mUpdateSet);
2025            updateSceneModeUI();
2026            mUpdateSet = 0;
2027        } else {
2028            if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
2029                mHandler.sendEmptyMessageDelayed(
2030                        SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
2031            }
2032        }
2033    }
2034
2035    private void gotoGallery() {
2036        MenuHelper.gotoCameraImageGallery(this);
2037    }
2038
2039    private void viewImage(RotateImageView view) {
2040        if(!view.isUriValid()) {
2041            Log.e(TAG, "Uri invalid. uri=" + view.getUri());
2042            return;
2043        }
2044
2045        try {
2046            startActivity(new Intent(
2047                    Util.REVIEW_ACTION, view.getUri()));
2048        } catch (ActivityNotFoundException ex) {
2049            try {
2050                startActivity(new Intent(
2051                        Intent.ACTION_VIEW, view.getUri()));
2052            } catch (ActivityNotFoundException e) {
2053                Log.e(TAG, "review image fail. uri=" + view.getUri(), e);
2054            }
2055        }
2056    }
2057
2058    private void startReceivingLocationUpdates() {
2059        if (mLocationManager != null) {
2060            try {
2061                mLocationManager.requestLocationUpdates(
2062                        LocationManager.NETWORK_PROVIDER,
2063                        1000,
2064                        0F,
2065                        mLocationListeners[1]);
2066            } catch (java.lang.SecurityException ex) {
2067                Log.i(TAG, "fail to request location update, ignore", ex);
2068            } catch (IllegalArgumentException ex) {
2069                Log.d(TAG, "provider does not exist " + ex.getMessage());
2070            }
2071            try {
2072                mLocationManager.requestLocationUpdates(
2073                        LocationManager.GPS_PROVIDER,
2074                        1000,
2075                        0F,
2076                        mLocationListeners[0]);
2077                showGpsOnScreenIndicator(false);
2078            } catch (java.lang.SecurityException ex) {
2079                Log.i(TAG, "fail to request location update, ignore", ex);
2080            } catch (IllegalArgumentException ex) {
2081                Log.d(TAG, "provider does not exist " + ex.getMessage());
2082            }
2083        }
2084    }
2085
2086    private void stopReceivingLocationUpdates() {
2087        if (mLocationManager != null) {
2088            for (int i = 0; i < mLocationListeners.length; i++) {
2089                try {
2090                    mLocationManager.removeUpdates(mLocationListeners[i]);
2091                } catch (Exception ex) {
2092                    Log.i(TAG, "fail to remove location listners, ignore", ex);
2093                }
2094            }
2095        }
2096        hideGpsOnScreenIndicator();
2097    }
2098
2099    private Location getCurrentLocation() {
2100        // go in best to worst order
2101        for (int i = 0; i < mLocationListeners.length; i++) {
2102            Location l = mLocationListeners[i].current();
2103            if (l != null) return l;
2104        }
2105        return null;
2106    }
2107
2108    private boolean isCameraIdle() {
2109        return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED;
2110    }
2111
2112    private boolean isImageCaptureIntent() {
2113        String action = getIntent().getAction();
2114        return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
2115    }
2116
2117    private void setupCaptureParams() {
2118        Bundle myExtras = getIntent().getExtras();
2119        if (myExtras != null) {
2120            mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
2121            mCropValue = myExtras.getString("crop");
2122        }
2123    }
2124
2125    private void showPostCaptureAlert() {
2126        if (mIsImageCaptureIntent) {
2127            if (mIndicatorWheel == null) {
2128                mShutterButton.setVisibility(View.INVISIBLE);
2129            }
2130            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2131            for (int id : pickIds) {
2132                View button = findViewById(id);
2133                ((View) button.getParent()).setVisibility(View.VISIBLE);
2134            }
2135            if (mCameraPicker != null) mCameraPicker.setEnabled(false);
2136            if (mZoomPicker != null) mZoomPicker.setEnabled(false);
2137
2138            // Remove the text of the cancel button
2139            View view = findViewById(R.id.btn_cancel);
2140            if (view instanceof Button) ((Button) view).setText("");
2141        }
2142    }
2143
2144    private void hidePostCaptureAlert() {
2145        if (mIsImageCaptureIntent) {
2146            if (mIndicatorWheel == null) {
2147                mShutterButton.setVisibility(View.VISIBLE);
2148            }
2149            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2150            for (int id : pickIds) {
2151                View button = findViewById(id);
2152                ((View) button.getParent()).setVisibility(View.GONE);
2153            }
2154            if (mCameraPicker != null) mCameraPicker.setEnabled(true);
2155            if (mZoomPicker != null) mZoomPicker.setEnabled(true);
2156
2157            // Restore the text of the cancel button
2158            View view = findViewById(R.id.btn_cancel);
2159            if (view instanceof Button) {
2160                ((Button) view).setText(R.string.review_cancel);
2161            }
2162        }
2163    }
2164
2165    private int calculatePicturesRemaining() {
2166        mPicturesRemaining = MenuHelper.calculatePicturesRemaining();
2167        return mPicturesRemaining;
2168    }
2169
2170    @Override
2171    public boolean onPrepareOptionsMenu(Menu menu) {
2172        super.onPrepareOptionsMenu(menu);
2173        // Only show the menu when camera is idle.
2174        for (int i = 0; i < menu.size(); i++) {
2175            menu.getItem(i).setVisible(isCameraIdle());
2176        }
2177
2178        return true;
2179    }
2180
2181    @Override
2182    public boolean onCreateOptionsMenu(Menu menu) {
2183        super.onCreateOptionsMenu(menu);
2184
2185        if (mIsImageCaptureIntent) {
2186            // No options menu for attach mode.
2187            return false;
2188        } else {
2189            addBaseMenuItems(menu);
2190        }
2191        return true;
2192    }
2193
2194    private void addBaseMenuItems(Menu menu) {
2195        MenuHelper.addSwitchModeMenuItem(menu, true, new Runnable() {
2196            public void run() {
2197                switchToVideoMode();
2198            }
2199        });
2200        MenuItem gallery = menu.add(Menu.NONE, Menu.NONE,
2201                MenuHelper.POSITION_GOTO_GALLERY,
2202                R.string.camera_gallery_photos_text)
2203                .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2204            public boolean onMenuItemClick(MenuItem item) {
2205                gotoGallery();
2206                return true;
2207            }
2208        });
2209        gallery.setIcon(android.R.drawable.ic_menu_gallery);
2210        mGalleryItems.add(gallery);
2211
2212        if (mNumberOfCameras > 1) {
2213            menu.add(Menu.NONE, Menu.NONE,
2214                    MenuHelper.POSITION_SWITCH_CAMERA_ID,
2215                    R.string.switch_camera_id)
2216                    .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2217                public boolean onMenuItemClick(MenuItem item) {
2218                    CameraSettings.writePreferredCameraId(mPreferences,
2219                            ((mCameraId == mFrontCameraId)
2220                            ? mBackCameraId : mFrontCameraId));
2221                    onSharedPreferenceChanged();
2222                    return true;
2223                }
2224            }).setIcon(android.R.drawable.ic_menu_camera);
2225        }
2226    }
2227
2228    private void switchCameraId(int cameraId) {
2229        if (mPausing || !isCameraIdle()) return;
2230        mCameraId = cameraId;
2231
2232        stopPreview();
2233        closeCamera();
2234
2235        // Remove the messages in the event queue.
2236        mHandler.removeMessages(RESTART_PREVIEW);
2237
2238        // Reset variables
2239        mJpegPictureCallbackTime = 0;
2240        mZoomValue = 0;
2241
2242        // Reload the preferences.
2243        mPreferences.setLocalId(this, mCameraId);
2244        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
2245
2246        // Restart the preview.
2247        resetExposureCompensation();
2248        if (!restartPreview()) return;
2249
2250        initializeZoom();
2251
2252        // Reload the UI.
2253        initializeHeadUpDisplay();
2254        initializeControlPanel();
2255    }
2256
2257    private boolean switchToVideoMode() {
2258        if (isFinishing() || !isCameraIdle()) return false;
2259        MenuHelper.gotoVideoMode(Camera.this);
2260        mHandler.removeMessages(FIRST_TIME_INIT);
2261        finish();
2262        return true;
2263    }
2264
2265    public boolean onSwitchChanged(Switcher source, boolean onOff) {
2266        if (onOff == SWITCH_VIDEO) {
2267            return switchToVideoMode();
2268        } else {
2269            return true;
2270        }
2271    }
2272
2273    private void onSharedPreferenceChanged() {
2274        // ignore the events after "onPause()"
2275        if (mPausing) return;
2276
2277        boolean recordLocation;
2278
2279        recordLocation = RecordLocationPreference.get(
2280                mPreferences, getContentResolver());
2281
2282        if (mRecordLocation != recordLocation) {
2283            mRecordLocation = recordLocation;
2284            if (mRecordLocation) {
2285                startReceivingLocationUpdates();
2286            } else {
2287                stopReceivingLocationUpdates();
2288            }
2289        }
2290        int cameraId = CameraSettings.readPreferredCameraId(mPreferences);
2291        if (mCameraId != cameraId) {
2292            switchCameraId(cameraId);
2293        } else {
2294            setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
2295        }
2296    }
2297
2298    @Override
2299    public void onUserInteraction() {
2300        super.onUserInteraction();
2301        keepScreenOnAwhile();
2302    }
2303
2304    private void resetScreenOn() {
2305        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2306        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2307    }
2308
2309    private void keepScreenOnAwhile() {
2310        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2311        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2312        mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
2313    }
2314
2315    private class MyHeadUpDisplayListener implements HeadUpDisplay.Listener {
2316
2317        public void onSharedPreferenceChanged() {
2318            Camera.this.onSharedPreferenceChanged();
2319        }
2320
2321        public void onRestorePreferencesClicked() {
2322            Camera.this.onRestorePreferencesClicked();
2323        }
2324
2325        public void onPopupWindowVisibilityChanged(int visibility) {
2326        }
2327    }
2328
2329    protected void onRestorePreferencesClicked() {
2330        if (mPausing) return;
2331        Runnable runnable = new Runnable() {
2332            public void run() {
2333                restorePreferences();
2334            }
2335        };
2336        MenuHelper.confirmAction(this,
2337                getString(R.string.confirm_restore_title),
2338                getString(R.string.confirm_restore_message),
2339                runnable);
2340    }
2341
2342    private void restorePreferences() {
2343        // Reset the zoom. Zoom value is not stored in preference.
2344        if (mParameters.isZoomSupported()) {
2345            mZoomValue = 0;
2346            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
2347            if (mZoomPicker != null) mZoomPicker.setZoomIndex(0);
2348        }
2349
2350        if (mHeadUpDisplay != null) {
2351            mHeadUpDisplay.restorePreferences(mParameters);
2352        }
2353
2354        if (mControlPanel != null) {
2355            mControlPanel.dismissSettingPopup();
2356            CameraSettings.restorePreferences(Camera.this, mPreferences,
2357                    mParameters);
2358            initializeControlPanel();
2359            onSharedPreferenceChanged();
2360        }
2361    }
2362
2363    private class MyControlPanelListener implements ControlPanel.Listener {
2364        public void onSharedPreferenceChanged() {
2365            Camera.this.onSharedPreferenceChanged();
2366        }
2367
2368        public void onRestorePreferencesClicked() {
2369            Camera.this.onRestorePreferencesClicked();
2370        }
2371    }
2372
2373    private class MyCameraPickerListener implements CameraPicker.Listener {
2374        public void onSharedPreferenceChanged() {
2375            Camera.this.onSharedPreferenceChanged();
2376        }
2377    }
2378}
2379