Camera.java revision 4504e5b41a0f647ef3e16b1134e130fe3678aebf 
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.ui.CameraHeadUpDisplay;
20import com.android.camera.ui.CameraPicker;
21import com.android.camera.ui.FocusRectangle;
22import com.android.camera.ui.GLRootView;
23import com.android.camera.ui.HeadUpDisplay;
24import com.android.camera.ui.IndicatorWheel;
25import com.android.camera.ui.ZoomControllerListener;
26import com.android.camera.ui.ZoomPicker;
27
28import android.app.Activity;
29import android.content.ActivityNotFoundException;
30import android.content.BroadcastReceiver;
31import android.content.ContentProviderClient;
32import android.content.ContentResolver;
33import android.content.Context;
34import android.content.Intent;
35import android.content.IntentFilter;
36import android.content.SharedPreferences.Editor;
37import android.content.res.Configuration;
38import android.content.res.Resources;
39import android.database.Cursor;
40import android.graphics.Bitmap;
41import android.graphics.BitmapFactory;
42import android.hardware.Camera.CameraInfo;
43import android.hardware.Camera.Parameters;
44import android.hardware.Camera.PictureCallback;
45import android.hardware.Camera.Size;
46import android.location.Location;
47import android.location.LocationManager;
48import android.location.LocationProvider;
49import android.media.AudioManager;
50import android.media.ToneGenerator;
51import android.net.Uri;
52import android.os.Build;
53import android.os.Bundle;
54import android.os.Handler;
55import android.os.Looper;
56import android.os.Message;
57import android.os.MessageQueue;
58import android.provider.MediaStore;
59import android.provider.Settings;
60import android.provider.MediaStore.Images.ImageColumns;
61import android.provider.MediaStore.Images.Media;
62import android.util.Log;
63import android.view.GestureDetector;
64import android.view.KeyEvent;
65import android.view.LayoutInflater;
66import android.view.Menu;
67import android.view.MenuItem;
68import android.view.MotionEvent;
69import android.view.OrientationEventListener;
70import android.view.SurfaceHolder;
71import android.view.SurfaceView;
72import android.view.View;
73import android.view.ViewGroup;
74import android.view.ViewStub;
75import android.view.Window;
76import android.view.WindowManager;
77import android.view.MenuItem.OnMenuItemClickListener;
78import android.widget.Button;
79import android.widget.Toast;
80
81import java.io.File;
82import java.io.FileNotFoundException;
83import java.io.FileOutputStream;
84import java.io.IOException;
85import java.io.OutputStream;
86import java.text.SimpleDateFormat;
87import java.util.ArrayList;
88import java.util.Collections;
89import java.util.Date;
90import java.util.HashMap;
91import java.util.List;
92
93/** The Camera activity which can preview and take pictures. */
94public class Camera extends NoSearchActivity implements View.OnClickListener,
95        ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback,
96        Switcher.OnSwitchListener {
97
98    private static final String TAG = "camera";
99
100    private static final String LAST_THUMB_PATH =
101            Storage.THUMBNAILS + "/image_last_thumb";
102
103    private static final int CROP_MSG = 1;
104    private static final int FIRST_TIME_INIT = 2;
105    private static final int RESTART_PREVIEW = 3;
106    private static final int CLEAR_SCREEN_DELAY = 4;
107    private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 5;
108
109    // The subset of parameters we need to update in setCameraParameters().
110    private static final int UPDATE_PARAM_INITIALIZE = 1;
111    private static final int UPDATE_PARAM_ZOOM = 2;
112    private static final int UPDATE_PARAM_PREFERENCE = 4;
113    private static final int UPDATE_PARAM_ALL = -1;
114
115    // When setCameraParametersWhenIdle() is called, we accumulate the subsets
116    // needed to be updated in mUpdateSet.
117    private int mUpdateSet;
118
119    // The brightness settings used when it is set to automatic in the system.
120    // The reason why it is set to 0.7 is just because 1.0 is too bright.
121    private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f;
122
123    private static final int SCREEN_DELAY = 2 * 60 * 1000;
124    private static final int FOCUS_BEEP_VOLUME = 100;
125
126    private static final int ZOOM_STOPPED = 0;
127    private static final int ZOOM_START = 1;
128    private static final int ZOOM_STOPPING = 2;
129
130    private int mZoomState = ZOOM_STOPPED;
131    private boolean mSmoothZoomSupported = false;
132    private int mZoomValue;  // The current zoom value.
133    private int mZoomMax;
134    private int mTargetZoomValue;
135    private ZoomPicker mZoomPicker;
136
137    private Parameters mParameters;
138    private Parameters mInitialParams;
139
140    private MyOrientationEventListener mOrientationListener;
141    // The device orientation in degrees. Default is unknown.
142    private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN;
143    // The orientation compensation for icons and thumbnails.
144    private int mOrientationCompensation = 0;
145    private ComboPreferences mPreferences;
146
147    private static final int IDLE = 1;
148    private static final int SNAPSHOT_IN_PROGRESS = 2;
149
150    private static final boolean SWITCH_CAMERA = true;
151    private static final boolean SWITCH_VIDEO = false;
152
153    private int mStatus = IDLE;
154    private static final String sTempCropFilename = "crop-temp";
155
156    private android.hardware.Camera mCameraDevice;
157    private ContentProviderClient mMediaProviderClient;
158    private SurfaceView mSurfaceView;
159    private SurfaceHolder mSurfaceHolder = null;
160    private ShutterButton mShutterButton;
161    private FocusRectangle mFocusRectangle;
162    private ToneGenerator mFocusToneGenerator;
163    private GestureDetector mPopupGestureDetector;
164    private SwitcherSet mSwitcher;
165    private boolean mStartPreviewFail = false;
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 long 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    private Toast mNotSelectableToast;
244
245    private final Handler mHandler = new MainHandler();
246    // xlarge devices use indicator wheel. Other devices use head-up display.
247    private CameraHeadUpDisplay mHeadUpDisplay;
248    private IndicatorWheel mIndicatorWheel;
249    private PreferenceGroup mPreferenceGroup;
250
251    // multiple cameras support
252    private int mNumberOfCameras;
253    private int mCameraId;
254    private int mFrontCameraId;
255    private int mBackCameraId;
256
257    private boolean mQuickCapture;
258
259    /**
260     * This Handler is used to post message back onto the main thread of the
261     * application
262     */
263    private class MainHandler extends Handler {
264        @Override
265        public void handleMessage(Message msg) {
266            switch (msg.what) {
267                case RESTART_PREVIEW: {
268                    restartPreview();
269                    if (mJpegPictureCallbackTime != 0) {
270                        long now = System.currentTimeMillis();
271                        mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
272                        Log.v(TAG, "mJpegCallbackFinishTime = "
273                                + mJpegCallbackFinishTime + "ms");
274                        mJpegPictureCallbackTime = 0;
275                    }
276                    break;
277                }
278
279                case CLEAR_SCREEN_DELAY: {
280                    getWindow().clearFlags(
281                            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
282                    break;
283                }
284
285                case FIRST_TIME_INIT: {
286                    initializeFirstTime();
287                    break;
288                }
289
290                case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
291                    setCameraParametersWhenIdle(0);
292                    break;
293                }
294            }
295        }
296    }
297
298    private void resetExposureCompensation() {
299        String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
300                CameraSettings.EXPOSURE_DEFAULT_VALUE);
301        if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
302            Editor editor = mPreferences.edit();
303            editor.putString(CameraSettings.KEY_EXPOSURE, "0");
304            editor.apply();
305            if (mHeadUpDisplay != null) {
306                mHeadUpDisplay.reloadPreferences();
307            }
308        }
309    }
310
311    private void keepMediaProviderInstance() {
312        // We want to keep a reference to MediaProvider in camera's lifecycle.
313        // TODO: Utilize mMediaProviderClient instance to replace
314        // ContentResolver calls.
315        if (mMediaProviderClient == null) {
316            mMediaProviderClient = getContentResolver()
317                    .acquireContentProviderClient(MediaStore.AUTHORITY);
318        }
319    }
320
321    // Snapshots can only be taken after this is called. It should be called
322    // once only. We could have done these things in onCreate() but we want to
323    // make preview screen appear as soon as possible.
324    private void initializeFirstTime() {
325        if (mFirstTimeInitialized) return;
326
327        // Create orientation listenter. This should be done first because it
328        // takes some time to get first orientation.
329        mOrientationListener = new MyOrientationEventListener(Camera.this);
330        mOrientationListener.enable();
331
332        // Initialize location sevice.
333        mLocationManager = (LocationManager)
334                getSystemService(Context.LOCATION_SERVICE);
335        mRecordLocation = RecordLocationPreference.get(
336                mPreferences, getContentResolver());
337        initGpsOnScreenIndicator();
338        if (mRecordLocation) startReceivingLocationUpdates();
339
340        keepMediaProviderInstance();
341        checkStorage();
342
343        // Initialize last picture button.
344        mContentResolver = getContentResolver();
345        if (!mIsImageCaptureIntent)  {
346            findViewById(R.id.camera_switch).setOnClickListener(this);
347            initThumbnailButton();
348        }
349
350        // Initialize shutter button.
351        mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
352        mShutterButton.setOnShutterButtonListener(this);
353        mShutterButton.setVisibility(View.VISIBLE);
354
355        mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle);
356        updateFocusIndicator();
357
358        initializeScreenBrightness();
359        installIntentFilter();
360        initializeFocusTone();
361        initializeZoom();
362        // xlarge devices use indicator wheel. Other devices use head-up display.
363        if (mIndicatorWheel == null) {
364            mHeadUpDisplay = new CameraHeadUpDisplay(this);
365            mHeadUpDisplay.setListener(new MyHeadUpDisplayListener());
366            initializeHeadUpDisplay();
367        }
368        mFirstTimeInitialized = true;
369        changeHeadUpDisplayState();
370        addIdleHandler();
371    }
372
373    private void addIdleHandler() {
374        MessageQueue queue = Looper.myQueue();
375        queue.addIdleHandler(new MessageQueue.IdleHandler() {
376            public boolean queueIdle() {
377                Storage.ensureOSXCompatible();
378                return false;
379            }
380        });
381    }
382
383    private void initThumbnailButton() {
384        mThumbnailButton =
385                (RotateImageView) findViewById(R.id.review_thumbnail);
386        if (mThumbnailButton != null) {
387            mThumbnailButton.setOnClickListener(this);
388            mThumbnailButton.loadData(LAST_THUMB_PATH);
389            updateThumbnailButton();
390        }
391    }
392
393    private void updateThumbnailButton() {
394        if (mThumbnailButton == null) return;
395        // Update last image if URI is invalid and the storage is ready.
396        if (!mThumbnailButton.isUriValid() && mPicturesRemaining >= 0) {
397            Storage.Thumbnail thumbnail =
398                    Storage.getLastImageThumbnail(mContentResolver);
399            if (thumbnail != null) {
400                mThumbnailButton.setData(thumbnail.getOriginalUri(),
401                        thumbnail.getBitmap(mContentResolver));
402            } else {
403                mThumbnailButton.setData(null, null);
404            }
405        }
406        mThumbnailButton.setVisibility(
407                (mThumbnailButton.getUri() != null) ? View.VISIBLE : View.GONE);
408    }
409
410    // If the activity is paused and resumed, this method will be called in
411    // onResume.
412    private void initializeSecondTime() {
413        // Start orientation listener as soon as possible because it takes
414        // some time to get first orientation.
415        mOrientationListener.enable();
416
417        // Start location update if needed.
418        mRecordLocation = RecordLocationPreference.get(
419                mPreferences, getContentResolver());
420        if (mRecordLocation) startReceivingLocationUpdates();
421
422        installIntentFilter();
423        initializeFocusTone();
424        initializeZoom();
425        changeHeadUpDisplayState();
426
427        keepMediaProviderInstance();
428        checkStorage();
429
430        if (!mIsImageCaptureIntent) {
431            updateThumbnailButton();
432        }
433    }
434
435    private void initializeZoom() {
436        if (!mParameters.isZoomSupported()) return;
437
438        mZoomMax = mParameters.getMaxZoom();
439        mSmoothZoomSupported = mParameters.isSmoothZoomSupported();
440        if (mZoomPicker != null) {
441            mZoomPicker.setZoomRatios(getZoomRatios());
442            mZoomPicker.setZoomIndex(mParameters.getZoom());
443            mZoomPicker.setOnZoomChangeListener(
444                    new ZoomPicker.OnZoomChangedListener() {
445                public void onZoomChanged(int index) {
446                    onZoomValueChanged(index);
447                }
448            });
449        }
450
451        mCameraDevice.setZoomChangeListener(mZoomListener);
452    }
453
454    private void onZoomValueChanged(int index) {
455        // Not useful to change zoom value when the activity is paused.
456        if (mPausing) return;
457
458        if (mSmoothZoomSupported) {
459            if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) {
460                mTargetZoomValue = index;
461                if (mZoomState == ZOOM_START) {
462                    mZoomState = ZOOM_STOPPING;
463                    mCameraDevice.stopSmoothZoom();
464                }
465            } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) {
466                mTargetZoomValue = index;
467                mCameraDevice.startSmoothZoom(index);
468                mZoomState = ZOOM_START;
469            }
470        } else {
471            mZoomValue = index;
472            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
473        }
474    }
475
476    private float[] getZoomRatios() {
477        if(!mParameters.isZoomSupported()) return null;
478        List<Integer> zoomRatios = mParameters.getZoomRatios();
479        float result[] = new float[zoomRatios.size()];
480        for (int i = 0, n = result.length; i < n; ++i) {
481            result[i] = (float) zoomRatios.get(i) / 100f;
482        }
483        return result;
484    }
485
486    private int mLocation[] = new int[2];
487    private class PopupGestureListener extends
488            GestureDetector.SimpleOnGestureListener {
489        public boolean onDown(MotionEvent e) {
490            // Check if the popup window is visible.
491            View v = mIndicatorWheel.getActivePopupWindow();
492            if (v == null) return false;
493
494            int x = Math.round(e.getX());
495            int y = Math.round(e.getY());
496
497            // Dismiss the popup window if users touch on the outside.
498            v.getLocationOnScreen(mLocation);
499            if (x < mLocation[0] || (x > mLocation[0] + v.getWidth())
500                    || y < mLocation[1] || (y > mLocation[1] + v.getHeight())) {
501                // Let indicator wheel handle its own event.
502                mIndicatorWheel.getLocationOnScreen(mLocation);
503                if (x < mLocation[0] || (x > mLocation[0] + mIndicatorWheel.getWidth())
504                        || y < mLocation[1] || (y > mLocation[1] + mIndicatorWheel.getHeight())) {
505                    mIndicatorWheel.dismissSettingPopup();
506                }
507                // Let event fall through.
508            }
509            return false;
510        }
511    }
512
513    @Override
514    public boolean dispatchTouchEvent(MotionEvent m) {
515        // Check if the popup window should be dismissed first.
516        if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) {
517            return true;
518        }
519
520        return super.dispatchTouchEvent(m);
521    }
522
523    LocationListener [] mLocationListeners = new LocationListener[] {
524            new LocationListener(LocationManager.GPS_PROVIDER),
525            new LocationListener(LocationManager.NETWORK_PROVIDER)
526    };
527
528    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
529        @Override
530        public void onReceive(Context context, Intent intent) {
531            String action = intent.getAction();
532            if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
533                    || action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
534                    || action.equals(Intent.ACTION_MEDIA_CHECKING)) {
535                checkStorage();
536            } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
537                checkStorage();
538                if (!mIsImageCaptureIntent)  {
539                    updateThumbnailButton();
540                }
541            }
542        }
543    };
544
545    private void initializeCameraPicker() {
546        mCameraPicker = (CameraPicker) findViewById(R.id.camera_picker);
547        if (mCameraPicker != null) {
548            mCameraPicker.setImageResource(R.drawable.camera_toggle);
549            ListPreference pref = mPreferenceGroup.findPreference(
550                    CameraSettings.KEY_CAMERA_ID);
551            if (pref != null) {
552                mCameraPicker.initialize(pref);
553                mCameraPicker.setListener(new MyCameraPickerListener());
554            }
555        }
556    }
557
558    private void initGpsOnScreenIndicator() {
559        mGpsNoSignalView = findViewById(R.id.onscreen_gps_indicator_no_signal);
560        mGpsHasSignalView = findViewById(R.id.onscreen_gps_indicator_on);
561    }
562
563    private void showGpsOnScreenIndicator(boolean hasSignal) {
564        if (hasSignal) {
565            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
566            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.VISIBLE);
567        } else {
568            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.VISIBLE);
569            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
570        }
571    }
572
573    private void hideGpsOnScreenIndicator() {
574        if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
575        if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
576    }
577
578    private class LocationListener
579            implements android.location.LocationListener {
580        Location mLastLocation;
581        boolean mValid = false;
582        String mProvider;
583
584        public LocationListener(String provider) {
585            mProvider = provider;
586            mLastLocation = new Location(mProvider);
587        }
588
589        public void onLocationChanged(Location newLocation) {
590            if (newLocation.getLatitude() == 0.0
591                    && newLocation.getLongitude() == 0.0) {
592                // Hack to filter out 0.0,0.0 locations
593                return;
594            }
595            // If GPS is available before start camera, we won't get status
596            // update so update GPS indicator when we receive data.
597            if (mRecordLocation
598                    && LocationManager.GPS_PROVIDER.equals(mProvider)) {
599                if (mHeadUpDisplay != null) {
600                    mHeadUpDisplay.setGpsHasSignal(true);
601                }
602                showGpsOnScreenIndicator(true);
603            }
604            if (!mValid) {
605                Log.d(TAG, "Got first location.");
606            }
607            mLastLocation.set(newLocation);
608            mValid = true;
609        }
610
611        public void onProviderEnabled(String provider) {
612        }
613
614        public void onProviderDisabled(String provider) {
615            mValid = false;
616        }
617
618        public void onStatusChanged(
619                String provider, int status, Bundle extras) {
620            switch(status) {
621                case LocationProvider.OUT_OF_SERVICE:
622                case LocationProvider.TEMPORARILY_UNAVAILABLE: {
623                    mValid = false;
624                    if (mRecordLocation &&
625                            LocationManager.GPS_PROVIDER.equals(provider)) {
626                        if (mHeadUpDisplay != null) {
627                            mHeadUpDisplay.setGpsHasSignal(false);
628                        }
629                        showGpsOnScreenIndicator(false);
630                    }
631                    break;
632                }
633            }
634        }
635
636        public Location current() {
637            return mValid ? mLastLocation : null;
638        }
639    }
640
641    private final class ShutterCallback
642            implements android.hardware.Camera.ShutterCallback {
643        public void onShutter() {
644            mShutterCallbackTime = System.currentTimeMillis();
645            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
646            Log.v(TAG, "mShutterLag = " + mShutterLag + "ms");
647            clearFocusState();
648        }
649    }
650
651    private final class PostViewPictureCallback implements PictureCallback {
652        public void onPictureTaken(
653                byte [] data, android.hardware.Camera camera) {
654            mPostViewPictureCallbackTime = System.currentTimeMillis();
655            Log.v(TAG, "mShutterToPostViewCallbackTime = "
656                    + (mPostViewPictureCallbackTime - mShutterCallbackTime)
657                    + "ms");
658        }
659    }
660
661    private final class RawPictureCallback implements PictureCallback {
662        public void onPictureTaken(
663                byte [] rawData, android.hardware.Camera camera) {
664            mRawPictureCallbackTime = System.currentTimeMillis();
665            Log.v(TAG, "mShutterToRawCallbackTime = "
666                    + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
667        }
668    }
669
670    private final class JpegPictureCallback implements PictureCallback {
671        Location mLocation;
672
673        public JpegPictureCallback(Location loc) {
674            mLocation = loc;
675        }
676
677        public void onPictureTaken(
678                final byte [] jpegData, final android.hardware.Camera camera) {
679            if (mPausing) {
680                return;
681            }
682
683            mJpegPictureCallbackTime = System.currentTimeMillis();
684            // If postview callback has arrived, the captured image is displayed
685            // in postview callback. If not, the captured image is displayed in
686            // raw picture callback.
687            if (mPostViewPictureCallbackTime != 0) {
688                mShutterToPictureDisplayedTime =
689                        mPostViewPictureCallbackTime - mShutterCallbackTime;
690                mPictureDisplayedToJpegCallbackTime =
691                        mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
692            } else {
693                mShutterToPictureDisplayedTime =
694                        mRawPictureCallbackTime - mShutterCallbackTime;
695                mPictureDisplayedToJpegCallbackTime =
696                        mJpegPictureCallbackTime - mRawPictureCallbackTime;
697            }
698            Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
699                    + mPictureDisplayedToJpegCallbackTime + "ms");
700
701            if (!mIsImageCaptureIntent) {
702                enableCameraControls(true);
703
704                // We want to show the taken picture for a while, so we wait
705                // for at least 1.2 second before restarting the preview.
706                long delay = 1200 - mPictureDisplayedToJpegCallbackTime;
707                if (delay < 0) {
708                    restartPreview();
709                } else {
710                    mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay);
711                }
712            }
713            mImageCapture.storeImage(jpegData, camera, mLocation);
714
715            // Check this in advance of each shot so we don't add to shutter
716            // latency. It's true that someone else could write to the SD card in
717            // the mean time and fill it, but that could have happened between the
718            // shutter press and saving the JPEG too.
719            checkStorage();
720
721            if (!mHandler.hasMessages(RESTART_PREVIEW)) {
722                long now = System.currentTimeMillis();
723                mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
724                Log.v(TAG, "mJpegCallbackFinishTime = "
725                        + mJpegCallbackFinishTime + "ms");
726                mJpegPictureCallbackTime = 0;
727            }
728        }
729    }
730
731    private final class AutoFocusCallback
732            implements android.hardware.Camera.AutoFocusCallback {
733        public void onAutoFocus(
734                boolean focused, android.hardware.Camera camera) {
735            mFocusCallbackTime = System.currentTimeMillis();
736            mAutoFocusTime = mFocusCallbackTime - mFocusStartTime;
737            Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
738            if (mFocusState == FOCUSING_SNAP_ON_FINISH) {
739                // Take the picture no matter focus succeeds or fails. No need
740                // to play the AF sound if we're about to play the shutter
741                // sound.
742                if (focused) {
743                    mFocusState = FOCUS_SUCCESS;
744                } else {
745                    mFocusState = FOCUS_FAIL;
746                }
747                mImageCapture.onSnap();
748            } else if (mFocusState == FOCUSING) {
749                // User is half-pressing the focus key. Play the focus tone.
750                // Do not take the picture now.
751                if (focused) {
752                    mFocusState = FOCUS_SUCCESS;
753                    if (mFocusToneGenerator != null) {
754                        mFocusToneGenerator.startTone(ToneGenerator.TONE_PROP_BEEP2);
755                    }
756                } else {
757                    mFocusState = FOCUS_FAIL;
758                }
759            } else if (mFocusState == FOCUS_NOT_STARTED) {
760                // User has released the focus key before focus completes.
761                // Do nothing.
762            }
763            updateFocusIndicator();
764        }
765    }
766
767    private final class ZoomListener
768            implements android.hardware.Camera.OnZoomChangeListener {
769        public void onZoomChange(
770                int value, boolean stopped, android.hardware.Camera camera) {
771            Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped);
772            mZoomValue = value;
773            // Keep mParameters up to date. We do not getParameter again in
774            // takePicture. If we do not do this, wrong zoom value will be set.
775            mParameters.setZoom(value);
776            // We only care if the zoom is stopped. mZooming is set to true when
777            // we start smooth zoom.
778            if (stopped && mZoomState != ZOOM_STOPPED) {
779                if (value != mTargetZoomValue) {
780                    mCameraDevice.startSmoothZoom(mTargetZoomValue);
781                    mZoomState = ZOOM_START;
782                } else {
783                    mZoomState = ZOOM_STOPPED;
784                }
785            }
786        }
787    }
788
789    private class ImageCapture {
790
791        byte[] mCaptureOnlyData;
792
793        public void storeImage(final byte[] data,
794                android.hardware.Camera camera, Location loc) {
795            if (!mIsImageCaptureIntent) {
796                long dateTaken = System.currentTimeMillis();
797                String title = createName(dateTaken);
798
799                Storage.Thumbnail thumbnail = Storage.addImage(
800                        mContentResolver, title, dateTaken, loc, data);
801
802                if (thumbnail != null && mThumbnailButton != null) {
803                    mThumbnailButton.setData(thumbnail.getOriginalUri(),
804                            thumbnail.getBitmap(mContentResolver));
805                    mThumbnailButton.setVisibility(View.VISIBLE);
806
807                    sendBroadcast(new Intent("com.android.camera.NEW_PICTURE",
808                            thumbnail.getOriginalUri()));
809                }
810            } else {
811                mCaptureOnlyData = data;
812                if (!mQuickCapture) {
813                    showPostCaptureAlert();
814                } else {
815                    doAttach();
816                }
817            }
818        }
819
820        /**
821         * Initiate the capture of an image.
822         */
823        public void initiate() {
824            if (mCameraDevice == null) {
825                return;
826            }
827
828            capture();
829        }
830
831        public byte[] getLastCaptureData() {
832            return mCaptureOnlyData;
833        }
834
835        private void capture() {
836            mCaptureOnlyData = null;
837
838            // See android.hardware.Camera.Parameters.setRotation for
839            // documentation.
840            int rotation = 0;
841            if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) {
842                CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
843                if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
844                    rotation = (info.orientation - mOrientation + 360) % 360;
845                } else {  // back-facing camera
846                    rotation = (info.orientation + mOrientation) % 360;
847                }
848            }
849            mParameters.setRotation(rotation);
850
851            // Clear previous GPS location from the parameters.
852            mParameters.removeGpsData();
853
854            // We always encode GpsTimeStamp
855            mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000);
856
857            // Set GPS location.
858            Location loc = mRecordLocation ? getCurrentLocation() : null;
859            if (loc != null) {
860                double lat = loc.getLatitude();
861                double lon = loc.getLongitude();
862                boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d);
863
864                if (hasLatLon) {
865                    Log.d(TAG, "Set gps location");
866                    mParameters.setGpsLatitude(lat);
867                    mParameters.setGpsLongitude(lon);
868                    mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase());
869                    if (loc.hasAltitude()) {
870                        mParameters.setGpsAltitude(loc.getAltitude());
871                    } else {
872                        // for NETWORK_PROVIDER location provider, we may have
873                        // no altitude information, but the driver needs it, so
874                        // we fake one.
875                        mParameters.setGpsAltitude(0);
876                    }
877                    if (loc.getTime() != 0) {
878                        // Location.getTime() is UTC in milliseconds.
879                        // gps-timestamp is UTC in seconds.
880                        long utcTimeSeconds = loc.getTime() / 1000;
881                        mParameters.setGpsTimestamp(utcTimeSeconds);
882                    }
883                } else {
884                    loc = null;
885                }
886            }
887
888            mCameraDevice.setParameters(mParameters);
889
890            mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback,
891                    mPostViewPictureCallback, new JpegPictureCallback(loc));
892            mPreviewing = false;
893        }
894
895        public void onSnap() {
896            // If we are already in the middle of taking a snapshot then ignore.
897            if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) {
898                return;
899            }
900            mCaptureStartTime = System.currentTimeMillis();
901            mPostViewPictureCallbackTime = 0;
902            enableCameraControls(false);
903            mStatus = SNAPSHOT_IN_PROGRESS;
904
905            mImageCapture.initiate();
906        }
907
908        private void clearLastData() {
909            mCaptureOnlyData = null;
910        }
911    }
912
913    private boolean saveDataToFile(String filePath, byte[] data) {
914        FileOutputStream f = null;
915        try {
916            f = new FileOutputStream(filePath);
917            f.write(data);
918        } catch (IOException e) {
919            return false;
920        } finally {
921            Util.closeSilently(f);
922        }
923        return true;
924    }
925
926    private String createName(long dateTaken) {
927        Date date = new Date(dateTaken);
928        SimpleDateFormat dateFormat = new SimpleDateFormat(
929                getString(R.string.image_file_name_format));
930
931        return dateFormat.format(date);
932    }
933
934    @Override
935    public void onCreate(Bundle icicle) {
936        super.onCreate(icicle);
937
938        mIsImageCaptureIntent = isImageCaptureIntent();
939        if (mIsImageCaptureIntent) {
940            setContentView(R.layout.camera_attach);
941        } else {
942            setContentView(R.layout.camera);
943        }
944        mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview);
945
946        mPreferences = new ComboPreferences(this);
947        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal());
948
949        mCameraId = CameraSettings.readPreferredCameraId(mPreferences);
950
951        //Testing purpose. Launch a specific camera through the intent extras.
952        int intentCameraId = Util.getCameraFacingIntentExtras(this);
953        if (intentCameraId != -1) {
954            mCameraId = intentCameraId;
955        }
956
957        mPreferences.setLocalId(this, mCameraId);
958        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
959
960        mNumberOfCameras = CameraHolder.instance().getNumberOfCameras();
961        mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
962
963        // we need to reset exposure for the preview
964        resetExposureCompensation();
965        /*
966         * To reduce startup time, we start the preview in another thread.
967         * We make sure the preview is started at the end of onCreate.
968         */
969        Thread startPreviewThread = new Thread(new Runnable() {
970            public void run() {
971                try {
972                    mStartPreviewFail = false;
973                    startPreview();
974                } catch (CameraHardwareException e) {
975                    // In eng build, we throw the exception so that test tool
976                    // can detect it and report it
977                    if ("eng".equals(Build.TYPE)) {
978                        throw new RuntimeException(e);
979                    }
980                    mStartPreviewFail = true;
981                }
982            }
983        });
984        startPreviewThread.start();
985
986        // don't set mSurfaceHolder here. We have it set ONLY within
987        // surfaceChanged / surfaceDestroyed, other parts of the code
988        // assume that when it is set, the surface is also set.
989        SurfaceHolder holder = mSurfaceView.getHolder();
990        holder.addCallback(this);
991        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
992
993        if (mIsImageCaptureIntent) {
994            setupCaptureParams();
995
996            View reviewControl = findViewById(R.id.review_control);
997            reviewControl.setVisibility(View.VISIBLE);
998            reviewControl.findViewById(R.id.btn_cancel).setOnClickListener(this);
999            reviewControl.findViewById(R.id.btn_retake).setOnClickListener(this);
1000            reviewControl.findViewById(R.id.btn_done).setOnClickListener(this);
1001        } else {
1002            mSwitcher = (SwitcherSet) findViewById(R.id.camera_switch);
1003            mSwitcher.setVisibility(View.VISIBLE);
1004            mSwitcher.setOnSwitchListener(this);
1005        }
1006
1007        // Make sure preview is started.
1008        try {
1009            startPreviewThread.join();
1010            if (mStartPreviewFail) {
1011                showCameraErrorAndFinish();
1012                return;
1013            }
1014        } catch (InterruptedException ex) {
1015            // ignore
1016        }
1017
1018        mBackCameraId = CameraHolder.instance().getBackCameraId();
1019        mFrontCameraId = CameraHolder.instance().getFrontCameraId();
1020
1021        // Do this after starting preview because it depends on camera
1022        // parameters.
1023        initializeIndicatorWheel();
1024        initializeCameraPicker();
1025
1026        mZoomPicker = (ZoomPicker) findViewById(R.id.zoom_picker);
1027        if (mZoomPicker != null) mZoomPicker.setEnabled(true); // disabled initially in xml
1028    }
1029
1030    private void changeHeadUpDisplayState() {
1031        if (mHeadUpDisplay == null) return;
1032        // If the camera resumes behind the lock screen, the orientation
1033        // will be portrait. That causes OOM when we try to allocation GPU
1034        // memory for the GLSurfaceView again when the orientation changes. So,
1035        // we delayed initialization of HeadUpDisplay until the orientation
1036        // becomes landscape.
1037        Configuration config = getResources().getConfiguration();
1038        if (config.orientation == Configuration.ORIENTATION_LANDSCAPE
1039                && !mPausing && mFirstTimeInitialized) {
1040            if (mGLRootView == null) attachHeadUpDisplay();
1041        } else if (mGLRootView != null) {
1042            detachHeadUpDisplay();
1043        }
1044    }
1045
1046    private void overrideCameraSettings(final String flashMode,
1047            final String whiteBalance, final String focusMode) {
1048        if (mHeadUpDisplay != null) {
1049            mHeadUpDisplay.overrideSettings(
1050                    CameraSettings.KEY_FLASH_MODE, flashMode,
1051                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1052                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1053        }
1054        if (mIndicatorWheel != null) {
1055            mIndicatorWheel.overrideSettings(
1056                    CameraSettings.KEY_FLASH_MODE, flashMode,
1057                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1058                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1059        }
1060    }
1061
1062    private void updateSceneModeUI() {
1063        // If scene mode is set, we cannot set flash mode, white balance, and
1064        // focus mode, instead, we read it from driver
1065        if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1066            overrideCameraSettings(mParameters.getFlashMode(),
1067                    mParameters.getWhiteBalance(), mParameters.getFocusMode());
1068        } else {
1069            overrideCameraSettings(null, null, null);
1070        }
1071    }
1072
1073    private void loadCameraPreferences() {
1074        CameraSettings settings = new CameraSettings(this, mInitialParams,
1075                mCameraId, CameraHolder.instance().getCameraInfo());
1076        mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences);
1077    }
1078
1079    private void initializeIndicatorWheel() {
1080        mIndicatorWheel = (IndicatorWheel) findViewById(R.id.indicator_wheel);
1081        if (mIndicatorWheel == null) return;
1082        loadCameraPreferences();
1083
1084        String[] keys = new String[]{CameraSettings.KEY_FLASH_MODE,
1085            CameraSettings.KEY_WHITE_BALANCE,
1086            CameraSettings.KEY_COLOR_EFFECT,
1087            CameraSettings.KEY_SCENE_MODE};
1088        mIndicatorWheel.initialize(this, mPreferenceGroup, keys, true);
1089        mIndicatorWheel.setListener(new MyIndicatorWheelListener());
1090        mPopupGestureDetector = new GestureDetector(this,
1091                new PopupGestureListener());
1092        updateSceneModeUI();
1093    }
1094
1095    private void initializeHeadUpDisplay() {
1096        if (mHeadUpDisplay == null) return;
1097        loadCameraPreferences();
1098
1099        // If we have zoom picker, do not show zoom control on head-up display.
1100        float[] zoomRatios = null;
1101        if (mZoomPicker == null) zoomRatios = getZoomRatios();
1102        mHeadUpDisplay.initialize(this, mPreferenceGroup,
1103                zoomRatios, mOrientationCompensation);
1104        if (mZoomPicker == null && mParameters.isZoomSupported()) {
1105            mHeadUpDisplay.setZoomListener(new ZoomControllerListener() {
1106                public void onZoomChanged(
1107                        int index, float ratio, boolean isMoving) {
1108                    onZoomValueChanged(index);
1109                }
1110            });
1111        }
1112        updateSceneModeUI();
1113    }
1114
1115    private void attachHeadUpDisplay() {
1116        mHeadUpDisplay.setOrientation(mOrientationCompensation);
1117        if (mParameters.isZoomSupported()) {
1118            mHeadUpDisplay.setZoomIndex(mZoomValue);
1119        }
1120        ViewGroup frame = (ViewGroup) findViewById(R.id.frame);
1121        mGLRootView = new GLRootView(this);
1122        mGLRootView.setContentPane(mHeadUpDisplay);
1123        frame.addView(mGLRootView);
1124    }
1125
1126    private void detachHeadUpDisplay() {
1127        mHeadUpDisplay.setGpsHasSignal(false);
1128        mHeadUpDisplay.collapse();
1129        ((ViewGroup) mGLRootView.getParent()).removeView(mGLRootView);
1130        mGLRootView = null;
1131    }
1132
1133    private boolean collapseCameraControls() {
1134        if (mHeadUpDisplay != null && mHeadUpDisplay.collapse()) {
1135            return true;
1136        }
1137        if (mIndicatorWheel != null && mIndicatorWheel.dismissSettingPopup()) {
1138            return true;
1139        }
1140        return false;
1141    }
1142
1143    private void enableCameraControls(boolean enable) {
1144        if (mHeadUpDisplay != null) mHeadUpDisplay.setEnabled(enable);
1145        if (mIndicatorWheel != null) mIndicatorWheel.setEnabled(enable);
1146        if (mCameraPicker != null) mCameraPicker.setEnabled(enable);
1147        if (mZoomPicker != null) mZoomPicker.setEnabled(enable);
1148        if (mSwitcher != null) mSwitcher.setEnabled(enable);
1149    }
1150
1151    public static int roundOrientation(int orientation) {
1152        return ((orientation + 45) / 90 * 90) % 360;
1153    }
1154
1155    private class MyOrientationEventListener
1156            extends OrientationEventListener {
1157        public MyOrientationEventListener(Context context) {
1158            super(context);
1159        }
1160
1161        @Override
1162        public void onOrientationChanged(int orientation) {
1163            // We keep the last known orientation. So if the user first orient
1164            // the camera then point the camera to floor or sky, we still have
1165            // the correct orientation.
1166            if (orientation == ORIENTATION_UNKNOWN) return;
1167            mOrientation = roundOrientation(orientation);
1168            // When the screen is unlocked, display rotation may change. Always
1169            // calculate the up-to-date orientationCompensation.
1170            int orientationCompensation = mOrientation
1171                    + Util.getDisplayRotation(Camera.this);
1172            if (mOrientationCompensation != orientationCompensation) {
1173                mOrientationCompensation = orientationCompensation;
1174                if (!mIsImageCaptureIntent) {
1175                    setOrientationIndicator(mOrientationCompensation);
1176                }
1177                if (mHeadUpDisplay != null) {
1178                    mHeadUpDisplay.setOrientation(mOrientationCompensation);
1179                }
1180            }
1181        }
1182    }
1183
1184    private void setOrientationIndicator(int degree) {
1185        RotateImageView icon = (RotateImageView) findViewById(
1186                R.id.review_thumbnail);
1187        if (icon != null) icon.setDegree(degree);
1188
1189        icon = (RotateImageView) findViewById(R.id.camera_switch_icon);
1190        if (icon != null) icon.setDegree(degree);
1191        icon = (RotateImageView) findViewById(R.id.video_switch_icon);
1192        if (icon != null) icon.setDegree(degree);
1193    }
1194
1195    @Override
1196    public void onStart() {
1197        super.onStart();
1198        if (!mIsImageCaptureIntent) {
1199            mSwitcher.setSwitch(SWITCH_CAMERA);
1200        }
1201    }
1202
1203    @Override
1204    public void onStop() {
1205        super.onStop();
1206        if (mMediaProviderClient != null) {
1207            mMediaProviderClient.release();
1208            mMediaProviderClient = null;
1209        }
1210    }
1211
1212    private void checkStorage() {
1213        mPicturesRemaining = Storage.getAvailableSpace();
1214        if (mPicturesRemaining > 0) {
1215            mPicturesRemaining /= 1500000;
1216        }
1217        updateStorageHint();
1218    }
1219
1220    public void onClick(View v) {
1221        switch (v.getId()) {
1222            case R.id.btn_retake:
1223                hidePostCaptureAlert();
1224                restartPreview();
1225                break;
1226            case R.id.review_thumbnail:
1227                if (isCameraIdle()) {
1228                    viewImage(mThumbnailButton);
1229                }
1230                break;
1231            case R.id.btn_done:
1232                doAttach();
1233                break;
1234            case R.id.btn_cancel:
1235                doCancel();
1236                break;
1237            case R.id.btn_gallery:
1238                gotoGallery();
1239                break;
1240        }
1241    }
1242
1243    private void doAttach() {
1244        if (mPausing) {
1245            return;
1246        }
1247
1248        byte[] data = mImageCapture.getLastCaptureData();
1249
1250        if (mCropValue == null) {
1251            // First handle the no crop case -- just return the value.  If the
1252            // caller specifies a "save uri" then write the data to it's
1253            // stream. Otherwise, pass back a scaled down version of the bitmap
1254            // directly in the extras.
1255            if (mSaveUri != null) {
1256                OutputStream outputStream = null;
1257                try {
1258                    outputStream = mContentResolver.openOutputStream(mSaveUri);
1259                    outputStream.write(data);
1260                    outputStream.close();
1261
1262                    setResult(RESULT_OK);
1263                    finish();
1264                } catch (IOException ex) {
1265                    // ignore exception
1266                } finally {
1267                    Util.closeSilently(outputStream);
1268                }
1269            } else {
1270                int orientation = Exif.getOrientation(data);
1271                Bitmap bitmap = Util.makeBitmap(data, 50 * 1024);
1272                bitmap = Util.rotate(bitmap, orientation);
1273                setResult(RESULT_OK,
1274                        new Intent("inline-data").putExtra("data", bitmap));
1275                finish();
1276            }
1277        } else {
1278            // Save the image to a temp file and invoke the cropper
1279            Uri tempUri = null;
1280            FileOutputStream tempStream = null;
1281            try {
1282                File path = getFileStreamPath(sTempCropFilename);
1283                path.delete();
1284                tempStream = openFileOutput(sTempCropFilename, 0);
1285                tempStream.write(data);
1286                tempStream.close();
1287                tempUri = Uri.fromFile(path);
1288            } catch (FileNotFoundException ex) {
1289                setResult(Activity.RESULT_CANCELED);
1290                finish();
1291                return;
1292            } catch (IOException ex) {
1293                setResult(Activity.RESULT_CANCELED);
1294                finish();
1295                return;
1296            } finally {
1297                Util.closeSilently(tempStream);
1298            }
1299
1300            Bundle newExtras = new Bundle();
1301            if (mCropValue.equals("circle")) {
1302                newExtras.putString("circleCrop", "true");
1303            }
1304            if (mSaveUri != null) {
1305                newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
1306            } else {
1307                newExtras.putBoolean("return-data", true);
1308            }
1309
1310            Intent cropIntent = new Intent("com.android.camera.action.CROP");
1311
1312            cropIntent.setData(tempUri);
1313            cropIntent.putExtras(newExtras);
1314
1315            startActivityForResult(cropIntent, CROP_MSG);
1316        }
1317    }
1318
1319    private void doCancel() {
1320        setResult(RESULT_CANCELED, new Intent());
1321        finish();
1322    }
1323
1324    public void onShutterButtonFocus(ShutterButton button, boolean pressed) {
1325        if (mPausing) {
1326            return;
1327        }
1328        switch (button.getId()) {
1329            case R.id.shutter_button:
1330                doFocus(pressed);
1331                break;
1332        }
1333    }
1334
1335    public void onShutterButtonClick(ShutterButton button) {
1336        if (mPausing) {
1337            return;
1338        }
1339        switch (button.getId()) {
1340            case R.id.shutter_button:
1341                doSnap();
1342                break;
1343        }
1344    }
1345
1346    private OnScreenHint mStorageHint;
1347
1348    private void updateStorageHint() {
1349        String noStorageText = null;
1350
1351        if (mPicturesRemaining == Storage.UNAVAILABLE) {
1352            noStorageText = getString(R.string.no_storage);
1353        } else if (mPicturesRemaining == Storage.PREPARING) {
1354            noStorageText = getString(R.string.preparing_sd);
1355        } else if (mPicturesRemaining == Storage.UNKNOWN_SIZE) {
1356            noStorageText = getString(R.string.access_sd_fail);
1357        } else if (mPicturesRemaining < 1L) {
1358            noStorageText = getString(R.string.not_enough_space);
1359        }
1360
1361        if (noStorageText != null) {
1362            if (mStorageHint == null) {
1363                mStorageHint = OnScreenHint.makeText(this, noStorageText);
1364            } else {
1365                mStorageHint.setText(noStorageText);
1366            }
1367            mStorageHint.show();
1368        } else if (mStorageHint != null) {
1369            mStorageHint.cancel();
1370            mStorageHint = null;
1371        }
1372    }
1373
1374    private void installIntentFilter() {
1375        // install an intent filter to receive SD card related events.
1376        IntentFilter intentFilter =
1377                new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
1378        intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
1379        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
1380        intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
1381        intentFilter.addDataScheme("file");
1382        registerReceiver(mReceiver, intentFilter);
1383        mDidRegister = true;
1384    }
1385
1386    private void initializeFocusTone() {
1387        // Initialize focus tone generator.
1388        try {
1389            mFocusToneGenerator = new ToneGenerator(
1390                    AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME);
1391        } catch (Throwable ex) {
1392            Log.w(TAG, "Exception caught while creating tone generator: ", ex);
1393            mFocusToneGenerator = null;
1394        }
1395    }
1396
1397    private void initializeScreenBrightness() {
1398        Window win = getWindow();
1399        // Overright the brightness settings if it is automatic
1400        int mode = Settings.System.getInt(
1401                getContentResolver(),
1402                Settings.System.SCREEN_BRIGHTNESS_MODE,
1403                Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
1404        if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {
1405            WindowManager.LayoutParams winParams = win.getAttributes();
1406            winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS;
1407            win.setAttributes(winParams);
1408        }
1409    }
1410
1411    @Override
1412    protected void onResume() {
1413        super.onResume();
1414
1415        mPausing = false;
1416        mJpegPictureCallbackTime = 0;
1417        mZoomValue = 0;
1418        mImageCapture = new ImageCapture();
1419
1420        // Start the preview if it is not started.
1421        if (!mPreviewing && !mStartPreviewFail) {
1422            resetExposureCompensation();
1423            if (!restartPreview()) return;
1424        }
1425
1426        if (mSurfaceHolder != null) {
1427            // If first time initialization is not finished, put it in the
1428            // message queue.
1429            if (!mFirstTimeInitialized) {
1430                mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1431            } else {
1432                initializeSecondTime();
1433            }
1434        }
1435        keepScreenOnAwhile();
1436    }
1437
1438    @Override
1439    public void onConfigurationChanged(Configuration config) {
1440        super.onConfigurationChanged(config);
1441        changeHeadUpDisplayState();
1442    }
1443
1444    @Override
1445    protected void onPause() {
1446        mPausing = true;
1447        stopPreview();
1448        // Close the camera now because other activities may need to use it.
1449        closeCamera();
1450        resetScreenOn();
1451        collapseCameraControls();
1452        changeHeadUpDisplayState();
1453
1454        if (mFirstTimeInitialized) {
1455            mOrientationListener.disable();
1456            if (!mIsImageCaptureIntent) {
1457                if (mThumbnailButton != null) {
1458                    mThumbnailButton.storeData(LAST_THUMB_PATH);
1459                }
1460            }
1461            hidePostCaptureAlert();
1462        }
1463
1464        if (mDidRegister) {
1465            unregisterReceiver(mReceiver);
1466            mDidRegister = false;
1467        }
1468        stopReceivingLocationUpdates();
1469
1470        if (mFocusToneGenerator != null) {
1471            mFocusToneGenerator.release();
1472            mFocusToneGenerator = null;
1473        }
1474
1475        if (mStorageHint != null) {
1476            mStorageHint.cancel();
1477            mStorageHint = null;
1478        }
1479
1480        // If we are in an image capture intent and has taken
1481        // a picture, we just clear it in onPause.
1482        mImageCapture.clearLastData();
1483        mImageCapture = null;
1484
1485        // Remove the messages in the event queue.
1486        mHandler.removeMessages(RESTART_PREVIEW);
1487        mHandler.removeMessages(FIRST_TIME_INIT);
1488
1489        super.onPause();
1490    }
1491
1492    @Override
1493    protected void onActivityResult(
1494            int requestCode, int resultCode, Intent data) {
1495        switch (requestCode) {
1496            case CROP_MSG: {
1497                Intent intent = new Intent();
1498                if (data != null) {
1499                    Bundle extras = data.getExtras();
1500                    if (extras != null) {
1501                        intent.putExtras(extras);
1502                    }
1503                }
1504                setResult(resultCode, intent);
1505                finish();
1506
1507                File path = getFileStreamPath(sTempCropFilename);
1508                path.delete();
1509
1510                break;
1511            }
1512        }
1513    }
1514
1515    private boolean canTakePicture() {
1516        return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0);
1517    }
1518
1519    private void autoFocus() {
1520        // Initiate autofocus only when preview is started and snapshot is not
1521        // in progress.
1522        if (canTakePicture()) {
1523            enableCameraControls(false);
1524            Log.v(TAG, "Start autofocus.");
1525            mFocusStartTime = System.currentTimeMillis();
1526            mFocusState = FOCUSING;
1527            updateFocusIndicator();
1528            mCameraDevice.autoFocus(mAutoFocusCallback);
1529        }
1530    }
1531
1532    private void cancelAutoFocus() {
1533        // User releases half-pressed focus key.
1534        if (mStatus != SNAPSHOT_IN_PROGRESS && (mFocusState == FOCUSING
1535                || mFocusState == FOCUS_SUCCESS || mFocusState == FOCUS_FAIL)) {
1536            Log.v(TAG, "Cancel autofocus.");
1537            enableCameraControls(true);
1538            mCameraDevice.cancelAutoFocus();
1539        }
1540        if (mFocusState != FOCUSING_SNAP_ON_FINISH) {
1541            clearFocusState();
1542        }
1543    }
1544
1545    private void clearFocusState() {
1546        mFocusState = FOCUS_NOT_STARTED;
1547        updateFocusIndicator();
1548    }
1549
1550    private void updateFocusIndicator() {
1551        if (mFocusRectangle == null) return;
1552
1553        if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) {
1554            mFocusRectangle.showStart();
1555        } else if (mFocusState == FOCUS_SUCCESS) {
1556            mFocusRectangle.showSuccess();
1557        } else if (mFocusState == FOCUS_FAIL) {
1558            mFocusRectangle.showFail();
1559        } else {
1560            mFocusRectangle.clear();
1561        }
1562    }
1563
1564    @Override
1565    public void onBackPressed() {
1566        if (!isCameraIdle()) {
1567            // ignore backs while we're taking a picture
1568            return;
1569        } else if (!collapseCameraControls()) {
1570            super.onBackPressed();
1571        }
1572    }
1573
1574    @Override
1575    public boolean onKeyDown(int keyCode, KeyEvent event) {
1576        switch (keyCode) {
1577            case KeyEvent.KEYCODE_FOCUS:
1578                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1579                    doFocus(true);
1580                }
1581                return true;
1582            case KeyEvent.KEYCODE_CAMERA:
1583                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1584                    doSnap();
1585                }
1586                return true;
1587            case KeyEvent.KEYCODE_DPAD_CENTER:
1588                // If we get a dpad center event without any focused view, move
1589                // the focus to the shutter button and press it.
1590                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1591                    // Start auto-focus immediately to reduce shutter lag. After
1592                    // the shutter button gets the focus, doFocus() will be
1593                    // called again but it is fine.
1594                    if (collapseCameraControls()) return true;
1595                    doFocus(true);
1596                    if (mShutterButton.isInTouchMode()) {
1597                        mShutterButton.requestFocusFromTouch();
1598                    } else {
1599                        mShutterButton.requestFocus();
1600                    }
1601                    mShutterButton.setPressed(true);
1602                }
1603                return true;
1604        }
1605
1606        return super.onKeyDown(keyCode, event);
1607    }
1608
1609    @Override
1610    public boolean onKeyUp(int keyCode, KeyEvent event) {
1611        switch (keyCode) {
1612            case KeyEvent.KEYCODE_FOCUS:
1613                if (mFirstTimeInitialized) {
1614                    doFocus(false);
1615                }
1616                return true;
1617        }
1618        return super.onKeyUp(keyCode, event);
1619    }
1620
1621    private void doSnap() {
1622        if (collapseCameraControls()) return;
1623
1624        Log.v(TAG, "doSnap: mFocusState=" + mFocusState);
1625        // If the user has half-pressed the shutter and focus is completed, we
1626        // can take the photo right away. If the focus mode is infinity, we can
1627        // also take the photo.
1628        if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1629                || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1630                || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF)
1631                || (mFocusState == FOCUS_SUCCESS
1632                || mFocusState == FOCUS_FAIL)) {
1633            mImageCapture.onSnap();
1634        } else if (mFocusState == FOCUSING) {
1635            // Half pressing the shutter (i.e. the focus button event) will
1636            // already have requested AF for us, so just request capture on
1637            // focus here.
1638            mFocusState = FOCUSING_SNAP_ON_FINISH;
1639        } else if (mFocusState == FOCUS_NOT_STARTED) {
1640            // Focus key down event is dropped for some reasons. Just ignore.
1641        }
1642    }
1643
1644    private void doFocus(boolean pressed) {
1645        // Do the focus if the mode is not infinity.
1646        if (collapseCameraControls()) return;
1647        if (!(mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1648                  || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1649                  || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF))) {
1650            if (pressed) {  // Focus key down.
1651                autoFocus();
1652            } else {  // Focus key up.
1653                cancelAutoFocus();
1654            }
1655        }
1656    }
1657
1658    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
1659        // Make sure we have a surface in the holder before proceeding.
1660        if (holder.getSurface() == null) {
1661            Log.d(TAG, "holder.getSurface() == null");
1662            return;
1663        }
1664
1665        // We need to save the holder for later use, even when the mCameraDevice
1666        // is null. This could happen if onResume() is invoked after this
1667        // function.
1668        mSurfaceHolder = holder;
1669
1670        // The mCameraDevice will be null if it fails to connect to the camera
1671        // hardware. In this case we will show a dialog and then finish the
1672        // activity, so it's OK to ignore it.
1673        if (mCameraDevice == null) return;
1674
1675        // Sometimes surfaceChanged is called after onPause or before onResume.
1676        // Ignore it.
1677        if (mPausing || isFinishing()) return;
1678
1679        if (mPreviewing && holder.isCreating()) {
1680            // Set preview display if the surface is being created and preview
1681            // was already started. That means preview display was set to null
1682            // and we need to set it now.
1683            setPreviewDisplay(holder);
1684        } else {
1685            // 1. Restart the preview if the size of surface was changed. The
1686            // framework may not support changing preview display on the fly.
1687            // 2. Start the preview now if surface was destroyed and preview
1688            // stopped.
1689            restartPreview();
1690        }
1691
1692        // If first time initialization is not finished, send a message to do
1693        // it later. We want to finish surfaceChanged as soon as possible to let
1694        // user see preview first.
1695        if (!mFirstTimeInitialized) {
1696            mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1697        } else {
1698            initializeSecondTime();
1699        }
1700    }
1701
1702    public void surfaceCreated(SurfaceHolder holder) {
1703    }
1704
1705    public void surfaceDestroyed(SurfaceHolder holder) {
1706        stopPreview();
1707        mSurfaceHolder = null;
1708    }
1709
1710    private void closeCamera() {
1711        if (mCameraDevice != null) {
1712            CameraHolder.instance().release();
1713            mCameraDevice.setZoomChangeListener(null);
1714            mCameraDevice = null;
1715            mPreviewing = false;
1716        }
1717    }
1718
1719    private void ensureCameraDevice() throws CameraHardwareException {
1720        if (mCameraDevice == null) {
1721            mCameraDevice = CameraHolder.instance().open(mCameraId);
1722            mInitialParams = mCameraDevice.getParameters();
1723        }
1724    }
1725
1726    private void showCameraErrorAndFinish() {
1727        Resources ress = getResources();
1728        Util.showFatalErrorAndFinish(Camera.this,
1729                ress.getString(R.string.camera_error_title),
1730                ress.getString(R.string.cannot_connect_camera));
1731    }
1732
1733    private boolean restartPreview() {
1734        try {
1735            startPreview();
1736        } catch (CameraHardwareException e) {
1737            showCameraErrorAndFinish();
1738            return false;
1739        }
1740        return true;
1741    }
1742
1743    private void setPreviewDisplay(SurfaceHolder holder) {
1744        try {
1745            mCameraDevice.setPreviewDisplay(holder);
1746        } catch (Throwable ex) {
1747            closeCamera();
1748            throw new RuntimeException("setPreviewDisplay failed", ex);
1749        }
1750    }
1751
1752    private void startPreview() throws CameraHardwareException {
1753        if (mPausing || isFinishing()) return;
1754
1755        ensureCameraDevice();
1756        mCameraDevice.setErrorCallback(mErrorCallback);
1757
1758        // If we're previewing already, stop the preview first (this will blank
1759        // the screen).
1760        if (mPreviewing) stopPreview();
1761
1762        setPreviewDisplay(mSurfaceHolder);
1763        Util.setCameraDisplayOrientation(this, mCameraId, mCameraDevice);
1764        setCameraParameters(UPDATE_PARAM_ALL);
1765
1766
1767        try {
1768            Log.v(TAG, "startPreview");
1769            mCameraDevice.startPreview();
1770        } catch (Throwable ex) {
1771            closeCamera();
1772            throw new RuntimeException("startPreview failed", ex);
1773        }
1774        mPreviewing = true;
1775        mZoomState = ZOOM_STOPPED;
1776        mStatus = IDLE;
1777    }
1778
1779    private void stopPreview() {
1780        if (mCameraDevice != null && mPreviewing) {
1781            Log.v(TAG, "stopPreview");
1782            mCameraDevice.stopPreview();
1783        }
1784        mPreviewing = false;
1785        // If auto focus was in progress, it would have been canceled.
1786        clearFocusState();
1787    }
1788
1789    private static boolean isSupported(String value, List<String> supported) {
1790        return supported == null ? false : supported.indexOf(value) >= 0;
1791    }
1792
1793    private void updateCameraParametersInitialize() {
1794        // Reset preview frame rate to the maximum because it may be lowered by
1795        // video camera application.
1796        List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates();
1797        if (frameRates != null) {
1798            Integer max = Collections.max(frameRates);
1799            mParameters.setPreviewFrameRate(max);
1800        }
1801
1802    }
1803
1804    private void updateCameraParametersZoom() {
1805        // Set zoom.
1806        if (mParameters.isZoomSupported()) {
1807            mParameters.setZoom(mZoomValue);
1808        }
1809    }
1810
1811    private void updateCameraParametersPreference() {
1812        // Set picture size.
1813        String pictureSize = mPreferences.getString(
1814                CameraSettings.KEY_PICTURE_SIZE, null);
1815        if (pictureSize == null) {
1816            CameraSettings.initialCameraPictureSize(this, mParameters);
1817        } else {
1818            List<Size> supported = mParameters.getSupportedPictureSizes();
1819            CameraSettings.setCameraPictureSize(
1820                    pictureSize, supported, mParameters);
1821        }
1822
1823        // Set the preview frame aspect ratio according to the picture size.
1824        Size size = mParameters.getPictureSize();
1825        PreviewFrameLayout frameLayout =
1826                (PreviewFrameLayout) findViewById(R.id.frame_layout);
1827        frameLayout.setAspectRatio((double) size.width / size.height);
1828
1829        // Set a preview size that is closest to the viewfinder height and has
1830        // the right aspect ratio.
1831        List<Size> sizes = mParameters.getSupportedPreviewSizes();
1832        Size optimalSize = Util.getOptimalPreviewSize(this,
1833                sizes, (double) size.width / size.height);
1834        Size original = mParameters.getPreviewSize();
1835        if (!original.equals(optimalSize)) {
1836            mParameters.setPreviewSize(optimalSize.width, optimalSize.height);
1837
1838            // Zoom related settings will be changed for different preview
1839            // sizes, so set and read the parameters to get lastest values
1840            mCameraDevice.setParameters(mParameters);
1841            mParameters = mCameraDevice.getParameters();
1842        }
1843        Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height);
1844
1845        // Since change scene mode may change supported values,
1846        // Set scene mode first,
1847        mSceneMode = mPreferences.getString(
1848                CameraSettings.KEY_SCENE_MODE,
1849                getString(R.string.pref_camera_scenemode_default));
1850        if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
1851            if (!mParameters.getSceneMode().equals(mSceneMode)) {
1852                mParameters.setSceneMode(mSceneMode);
1853                mCameraDevice.setParameters(mParameters);
1854
1855                // Setting scene mode will change the settings of flash mode,
1856                // white balance, and focus mode. Here we read back the
1857                // parameters, so we can know those settings.
1858                mParameters = mCameraDevice.getParameters();
1859            }
1860        } else {
1861            mSceneMode = mParameters.getSceneMode();
1862            if (mSceneMode == null) {
1863                mSceneMode = Parameters.SCENE_MODE_AUTO;
1864            }
1865        }
1866
1867        // Set JPEG quality.
1868        String jpegQuality = mPreferences.getString(
1869                CameraSettings.KEY_JPEG_QUALITY,
1870                getString(R.string.pref_camera_jpegquality_default));
1871        mParameters.setJpegQuality(JpegEncodingQualityMappings.getQualityNumber(jpegQuality));
1872
1873        // For the following settings, we need to check if the settings are
1874        // still supported by latest driver, if not, ignore the settings.
1875
1876        // Set color effect parameter.
1877        String colorEffect = mPreferences.getString(
1878                CameraSettings.KEY_COLOR_EFFECT,
1879                getString(R.string.pref_camera_coloreffect_default));
1880        if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) {
1881            mParameters.setColorEffect(colorEffect);
1882        }
1883
1884        // Set exposure compensation
1885        String exposure = mPreferences.getString(
1886                CameraSettings.KEY_EXPOSURE,
1887                getString(R.string.pref_exposure_default));
1888        try {
1889            int value = Integer.parseInt(exposure);
1890            int max = mParameters.getMaxExposureCompensation();
1891            int min = mParameters.getMinExposureCompensation();
1892            if (value >= min && value <= max) {
1893                mParameters.setExposureCompensation(value);
1894            } else {
1895                Log.w(TAG, "invalid exposure range: " + exposure);
1896            }
1897        } catch (NumberFormatException e) {
1898            Log.w(TAG, "invalid exposure: " + exposure);
1899        }
1900
1901        if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1902            // Set flash mode.
1903            String flashMode = mPreferences.getString(
1904                    CameraSettings.KEY_FLASH_MODE,
1905                    getString(R.string.pref_camera_flashmode_default));
1906            List<String> supportedFlash = mParameters.getSupportedFlashModes();
1907            if (isSupported(flashMode, supportedFlash)) {
1908                mParameters.setFlashMode(flashMode);
1909            } else {
1910                flashMode = mParameters.getFlashMode();
1911                if (flashMode == null) {
1912                    flashMode = getString(
1913                            R.string.pref_camera_flashmode_no_flash);
1914                }
1915            }
1916
1917            // Set white balance parameter.
1918            String whiteBalance = mPreferences.getString(
1919                    CameraSettings.KEY_WHITE_BALANCE,
1920                    getString(R.string.pref_camera_whitebalance_default));
1921            if (isSupported(whiteBalance,
1922                    mParameters.getSupportedWhiteBalance())) {
1923                mParameters.setWhiteBalance(whiteBalance);
1924            } else {
1925                whiteBalance = mParameters.getWhiteBalance();
1926                if (whiteBalance == null) {
1927                    whiteBalance = Parameters.WHITE_BALANCE_AUTO;
1928                }
1929            }
1930
1931            // Set focus mode.
1932            mFocusMode = mPreferences.getString(
1933                    CameraSettings.KEY_FOCUS_MODE,
1934                    getString(R.string.pref_camera_focusmode_default));
1935            if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) {
1936                mParameters.setFocusMode(mFocusMode);
1937            } else {
1938                mFocusMode = mParameters.getFocusMode();
1939                if (mFocusMode == null) {
1940                    mFocusMode = Parameters.FOCUS_MODE_AUTO;
1941                }
1942            }
1943        } else {
1944            mFocusMode = mParameters.getFocusMode();
1945        }
1946    }
1947
1948    // We separate the parameters into several subsets, so we can update only
1949    // the subsets actually need updating. The PREFERENCE set needs extra
1950    // locking because the preference can be changed from GLThread as well.
1951    private void setCameraParameters(int updateSet) {
1952        mParameters = mCameraDevice.getParameters();
1953
1954        if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
1955            updateCameraParametersInitialize();
1956        }
1957
1958        if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
1959            updateCameraParametersZoom();
1960        }
1961
1962        if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
1963            updateCameraParametersPreference();
1964        }
1965
1966        mCameraDevice.setParameters(mParameters);
1967    }
1968
1969    // If the Camera is idle, update the parameters immediately, otherwise
1970    // accumulate them in mUpdateSet and update later.
1971    private void setCameraParametersWhenIdle(int additionalUpdateSet) {
1972        mUpdateSet |= additionalUpdateSet;
1973        if (mCameraDevice == null) {
1974            // We will update all the parameters when we open the device, so
1975            // we don't need to do anything now.
1976            mUpdateSet = 0;
1977            return;
1978        } else if (isCameraIdle()) {
1979            setCameraParameters(mUpdateSet);
1980            updateSceneModeUI();
1981            mUpdateSet = 0;
1982        } else {
1983            if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
1984                mHandler.sendEmptyMessageDelayed(
1985                        SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
1986            }
1987        }
1988    }
1989
1990    private void gotoGallery() {
1991        MenuHelper.gotoCameraImageGallery(this);
1992    }
1993
1994    private void viewImage(RotateImageView view) {
1995        if(!view.isUriValid()) {
1996            Log.e(TAG, "Uri invalid. uri=" + view.getUri());
1997            return;
1998        }
1999
2000        try {
2001            startActivity(new Intent(
2002                    Util.REVIEW_ACTION, view.getUri()));
2003        } catch (ActivityNotFoundException ex) {
2004            try {
2005                startActivity(new Intent(
2006                        Intent.ACTION_VIEW, view.getUri()));
2007            } catch (ActivityNotFoundException e) {
2008                Log.e(TAG, "review image fail. uri=" + view.getUri(), e);
2009            }
2010        }
2011    }
2012
2013    private void startReceivingLocationUpdates() {
2014        if (mLocationManager != null) {
2015            try {
2016                mLocationManager.requestLocationUpdates(
2017                        LocationManager.NETWORK_PROVIDER,
2018                        1000,
2019                        0F,
2020                        mLocationListeners[1]);
2021            } catch (java.lang.SecurityException ex) {
2022                Log.i(TAG, "fail to request location update, ignore", ex);
2023            } catch (IllegalArgumentException ex) {
2024                Log.d(TAG, "provider does not exist " + ex.getMessage());
2025            }
2026            try {
2027                mLocationManager.requestLocationUpdates(
2028                        LocationManager.GPS_PROVIDER,
2029                        1000,
2030                        0F,
2031                        mLocationListeners[0]);
2032                showGpsOnScreenIndicator(false);
2033            } catch (java.lang.SecurityException ex) {
2034                Log.i(TAG, "fail to request location update, ignore", ex);
2035            } catch (IllegalArgumentException ex) {
2036                Log.d(TAG, "provider does not exist " + ex.getMessage());
2037            }
2038            Log.d(TAG, "startReceivingLocationUpdates");
2039        }
2040    }
2041
2042    private void stopReceivingLocationUpdates() {
2043        if (mLocationManager != null) {
2044            for (int i = 0; i < mLocationListeners.length; i++) {
2045                try {
2046                    mLocationManager.removeUpdates(mLocationListeners[i]);
2047                } catch (Exception ex) {
2048                    Log.i(TAG, "fail to remove location listners, ignore", ex);
2049                }
2050            }
2051            Log.d(TAG, "stopReceivingLocationUpdates");
2052        }
2053        hideGpsOnScreenIndicator();
2054    }
2055
2056    private Location getCurrentLocation() {
2057        // go in best to worst order
2058        for (int i = 0; i < mLocationListeners.length; i++) {
2059            Location l = mLocationListeners[i].current();
2060            if (l != null) return l;
2061        }
2062        Log.d(TAG, "No location received yet.");
2063        return null;
2064    }
2065
2066    private boolean isCameraIdle() {
2067        return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED;
2068    }
2069
2070    private boolean isImageCaptureIntent() {
2071        String action = getIntent().getAction();
2072        return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
2073    }
2074
2075    private void setupCaptureParams() {
2076        Bundle myExtras = getIntent().getExtras();
2077        if (myExtras != null) {
2078            mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
2079            mCropValue = myExtras.getString("crop");
2080        }
2081    }
2082
2083    private void showPostCaptureAlert() {
2084        if (mIsImageCaptureIntent) {
2085            if (mIndicatorWheel == null) {
2086                mShutterButton.setVisibility(View.INVISIBLE);
2087            } else {
2088                mShutterButton.setEnabled(false);
2089            }
2090            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2091            for (int id : pickIds) {
2092                View button = findViewById(id);
2093                ((View) button.getParent()).setVisibility(View.VISIBLE);
2094            }
2095
2096            // Remove the text of the cancel button
2097            View view = findViewById(R.id.btn_cancel);
2098            if (view instanceof Button) ((Button) view).setText("");
2099        }
2100    }
2101
2102    private void hidePostCaptureAlert() {
2103        if (mIsImageCaptureIntent) {
2104            if (mIndicatorWheel == null) {
2105                mShutterButton.setVisibility(View.VISIBLE);
2106            } else {
2107                mShutterButton.setEnabled(true);
2108            }
2109            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2110            for (int id : pickIds) {
2111                View button = findViewById(id);
2112                ((View) button.getParent()).setVisibility(View.GONE);
2113            }
2114            enableCameraControls(true);
2115
2116            // Restore the text of the cancel button
2117            View view = findViewById(R.id.btn_cancel);
2118            if (view instanceof Button) {
2119                ((Button) view).setText(R.string.review_cancel);
2120            }
2121        }
2122    }
2123
2124    @Override
2125    public boolean onPrepareOptionsMenu(Menu menu) {
2126        super.onPrepareOptionsMenu(menu);
2127        // Only show the menu when camera is idle.
2128        for (int i = 0; i < menu.size(); i++) {
2129            menu.getItem(i).setVisible(isCameraIdle());
2130        }
2131
2132        return true;
2133    }
2134
2135    @Override
2136    public boolean onCreateOptionsMenu(Menu menu) {
2137        super.onCreateOptionsMenu(menu);
2138
2139        if (mIsImageCaptureIntent) {
2140            // No options menu for attach mode.
2141            return false;
2142        } else {
2143            addBaseMenuItems(menu);
2144        }
2145        return true;
2146    }
2147
2148    private void addBaseMenuItems(Menu menu) {
2149        MenuHelper.addSwitchModeMenuItem(menu, true, new Runnable() {
2150            public void run() {
2151                switchToVideoMode();
2152            }
2153        });
2154        MenuItem gallery = menu.add(Menu.NONE, Menu.NONE,
2155                MenuHelper.POSITION_GOTO_GALLERY,
2156                R.string.camera_gallery_photos_text)
2157                .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2158            public boolean onMenuItemClick(MenuItem item) {
2159                gotoGallery();
2160                return true;
2161            }
2162        });
2163        gallery.setIcon(android.R.drawable.ic_menu_gallery);
2164        mGalleryItems.add(gallery);
2165
2166        if (mNumberOfCameras > 1) {
2167            menu.add(Menu.NONE, Menu.NONE,
2168                    MenuHelper.POSITION_SWITCH_CAMERA_ID,
2169                    R.string.switch_camera_id)
2170                    .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2171                public boolean onMenuItemClick(MenuItem item) {
2172                    CameraSettings.writePreferredCameraId(mPreferences,
2173                            ((mCameraId == mFrontCameraId)
2174                            ? mBackCameraId : mFrontCameraId));
2175                    onSharedPreferenceChanged();
2176                    return true;
2177                }
2178            }).setIcon(android.R.drawable.ic_menu_camera);
2179        }
2180    }
2181
2182    private void switchCameraId(int cameraId) {
2183        if (mPausing || !isCameraIdle()) return;
2184        mCameraId = cameraId;
2185
2186        stopPreview();
2187        closeCamera();
2188
2189        // Remove the messages in the event queue.
2190        mHandler.removeMessages(RESTART_PREVIEW);
2191
2192        // Reset variables
2193        mJpegPictureCallbackTime = 0;
2194        mZoomValue = 0;
2195
2196        // Reload the preferences.
2197        mPreferences.setLocalId(this, mCameraId);
2198        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
2199
2200        // Restart the preview.
2201        resetExposureCompensation();
2202        if (!restartPreview()) return;
2203
2204        initializeZoom();
2205
2206        // Reload the UI.
2207        initializeHeadUpDisplay();
2208        initializeIndicatorWheel();
2209    }
2210
2211    private boolean switchToVideoMode() {
2212        if (isFinishing() || !isCameraIdle()) return false;
2213        MenuHelper.gotoVideoMode(Camera.this);
2214        mHandler.removeMessages(FIRST_TIME_INIT);
2215        finish();
2216        return true;
2217    }
2218
2219    public boolean onSwitchChanged(Switcher source, boolean onOff) {
2220        if (onOff == SWITCH_VIDEO) {
2221            return switchToVideoMode();
2222        } else {
2223            return true;
2224        }
2225    }
2226
2227    private void onSharedPreferenceChanged() {
2228        // ignore the events after "onPause()"
2229        if (mPausing) return;
2230
2231        boolean recordLocation;
2232
2233        recordLocation = RecordLocationPreference.get(
2234                mPreferences, getContentResolver());
2235
2236        if (mRecordLocation != recordLocation) {
2237            mRecordLocation = recordLocation;
2238            if (mRecordLocation) {
2239                startReceivingLocationUpdates();
2240            } else {
2241                stopReceivingLocationUpdates();
2242            }
2243        }
2244        int cameraId = CameraSettings.readPreferredCameraId(mPreferences);
2245        if (mCameraId != cameraId) {
2246            switchCameraId(cameraId);
2247        } else {
2248            setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
2249        }
2250    }
2251
2252    @Override
2253    public void onUserInteraction() {
2254        super.onUserInteraction();
2255        keepScreenOnAwhile();
2256    }
2257
2258    private void resetScreenOn() {
2259        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2260        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2261    }
2262
2263    private void keepScreenOnAwhile() {
2264        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2265        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2266        mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
2267    }
2268
2269    private class MyHeadUpDisplayListener implements HeadUpDisplay.Listener {
2270
2271        public void onSharedPreferenceChanged() {
2272            Camera.this.onSharedPreferenceChanged();
2273        }
2274
2275        public void onRestorePreferencesClicked() {
2276            Camera.this.onRestorePreferencesClicked();
2277        }
2278
2279        public void onPopupWindowVisibilityChanged(int visibility) {
2280        }
2281    }
2282
2283    protected void onRestorePreferencesClicked() {
2284        if (mPausing) return;
2285        Runnable runnable = new Runnable() {
2286            public void run() {
2287                restorePreferences();
2288            }
2289        };
2290        MenuHelper.confirmAction(this,
2291                getString(R.string.confirm_restore_title),
2292                getString(R.string.confirm_restore_message),
2293                runnable);
2294    }
2295
2296    private void restorePreferences() {
2297        // Reset the zoom. Zoom value is not stored in preference.
2298        if (mParameters.isZoomSupported()) {
2299            mZoomValue = 0;
2300            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
2301            if (mZoomPicker != null) mZoomPicker.setZoomIndex(0);
2302        }
2303
2304        if (mHeadUpDisplay != null) {
2305            mHeadUpDisplay.restorePreferences(mParameters);
2306        }
2307
2308        if (mIndicatorWheel != null) {
2309            mIndicatorWheel.dismissSettingPopup();
2310            CameraSettings.restorePreferences(Camera.this, mPreferences,
2311                    mParameters);
2312            initializeIndicatorWheel();
2313            onSharedPreferenceChanged();
2314        }
2315    }
2316
2317    protected void onOverriddenPreferencesClicked() {
2318        if (mPausing) return;
2319        if (mNotSelectableToast == null) {
2320            String str = getResources().getString(R.string.not_selectable_in_scene_mode);
2321            mNotSelectableToast = Toast.makeText(Camera.this, str, Toast.LENGTH_SHORT);
2322        }
2323        mNotSelectableToast.cancel();
2324        mNotSelectableToast.show();
2325    }
2326
2327    private class MyIndicatorWheelListener implements IndicatorWheel.Listener {
2328        public void onSharedPreferenceChanged() {
2329            Camera.this.onSharedPreferenceChanged();
2330        }
2331
2332        public void onRestorePreferencesClicked() {
2333            Camera.this.onRestorePreferencesClicked();
2334        }
2335
2336        public void onOverriddenPreferencesClicked() {
2337            Camera.this.onOverriddenPreferencesClicked();
2338        }
2339    }
2340
2341    private class MyCameraPickerListener implements CameraPicker.Listener {
2342        public void onSharedPreferenceChanged() {
2343            Camera.this.onSharedPreferenceChanged();
2344        }
2345    }
2346}
2347