Camera.java revision d4a3fb30b2ef7ae03a01661041ff4735e1b4fbf1 
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    // GPS on-screen indicator
177    private View mGpsNoSignalView;
178    private View mGpsHasSignalView;
179
180    // Front/Back camera pciker for xlarge layout
181    private CameraPicker mCameraPicker;
182
183    /**
184     * An unpublished intent flag requesting to return as soon as capturing
185     * is completed.
186     *
187     * TODO: consider publishing by moving into MediaStore.
188     */
189    private final static String EXTRA_QUICK_CAPTURE =
190            "android.intent.extra.quickCapture";
191
192    private boolean mPreviewing;
193    // The display rotation in degrees. This is only valid when mPreviewing is
194    // true.
195    private int mDisplayRotation;
196    private boolean mPausing;
197    private boolean mFirstTimeInitialized;
198    private boolean mIsImageCaptureIntent;
199    private boolean mRecordLocation;
200
201    private static final int FOCUS_NOT_STARTED = 0;
202    private static final int FOCUSING = 1;
203    private static final int FOCUSING_SNAP_ON_FINISH = 2;
204    private static final int FOCUS_SUCCESS = 3;
205    private static final int FOCUS_FAIL = 4;
206    private int mFocusState = FOCUS_NOT_STARTED;
207
208    private ContentResolver mContentResolver;
209    private boolean mDidRegister = false;
210
211    private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>();
212
213    private LocationManager mLocationManager = null;
214
215    private final ShutterCallback mShutterCallback = new ShutterCallback();
216    private final PostViewPictureCallback mPostViewPictureCallback =
217            new PostViewPictureCallback();
218    private final RawPictureCallback mRawPictureCallback =
219            new RawPictureCallback();
220    private final AutoFocusCallback mAutoFocusCallback =
221            new AutoFocusCallback();
222    private final ZoomListener mZoomListener = new ZoomListener();
223    private final CameraErrorCallback mErrorCallback = new CameraErrorCallback();
224
225    private long mFocusStartTime;
226    private long mFocusCallbackTime;
227    private long mCaptureStartTime;
228    private long mShutterCallbackTime;
229    private long mPostViewPictureCallbackTime;
230    private long mRawPictureCallbackTime;
231    private long mJpegPictureCallbackTime;
232    private long mPicturesRemaining;
233    private byte[] mJpegImageData;
234
235    // These latency time are for the CameraLatency test.
236    public long mAutoFocusTime;
237    public long mShutterLag;
238    public long mShutterToPictureDisplayedTime;
239    public long mPictureDisplayedToJpegCallbackTime;
240    public long mJpegCallbackFinishTime;
241
242    // Focus mode. Options are pref_camera_focusmode_entryvalues.
243    private String mFocusMode;
244    private String mSceneMode;
245    private Toast mNotSelectableToast;
246
247    private final Handler mHandler = new MainHandler();
248    // xlarge devices use indicator wheel. Other devices use head-up display.
249    private CameraHeadUpDisplay mHeadUpDisplay;
250    private IndicatorWheel mIndicatorWheel;
251    private PreferenceGroup mPreferenceGroup;
252
253    // multiple cameras support
254    private int mNumberOfCameras;
255    private int mCameraId;
256    private int mFrontCameraId;
257    private int mBackCameraId;
258
259    private boolean mQuickCapture;
260
261    /**
262     * This Handler is used to post message back onto the main thread of the
263     * application
264     */
265    private class MainHandler extends Handler {
266        @Override
267        public void handleMessage(Message msg) {
268            switch (msg.what) {
269                case RESTART_PREVIEW: {
270                    restartPreview();
271                    if (mJpegPictureCallbackTime != 0) {
272                        long now = System.currentTimeMillis();
273                        mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
274                        Log.v(TAG, "mJpegCallbackFinishTime = "
275                                + mJpegCallbackFinishTime + "ms");
276                        mJpegPictureCallbackTime = 0;
277                    }
278                    break;
279                }
280
281                case CLEAR_SCREEN_DELAY: {
282                    getWindow().clearFlags(
283                            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
284                    break;
285                }
286
287                case FIRST_TIME_INIT: {
288                    initializeFirstTime();
289                    break;
290                }
291
292                case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
293                    setCameraParametersWhenIdle(0);
294                    break;
295                }
296            }
297        }
298    }
299
300    private void resetExposureCompensation() {
301        String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
302                CameraSettings.EXPOSURE_DEFAULT_VALUE);
303        if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
304            Editor editor = mPreferences.edit();
305            editor.putString(CameraSettings.KEY_EXPOSURE, "0");
306            editor.apply();
307            if (mHeadUpDisplay != null) {
308                mHeadUpDisplay.reloadPreferences();
309            }
310        }
311    }
312
313    private void keepMediaProviderInstance() {
314        // We want to keep a reference to MediaProvider in camera's lifecycle.
315        // TODO: Utilize mMediaProviderClient instance to replace
316        // ContentResolver calls.
317        if (mMediaProviderClient == null) {
318            mMediaProviderClient = getContentResolver()
319                    .acquireContentProviderClient(MediaStore.AUTHORITY);
320        }
321    }
322
323    // Snapshots can only be taken after this is called. It should be called
324    // once only. We could have done these things in onCreate() but we want to
325    // make preview screen appear as soon as possible.
326    private void initializeFirstTime() {
327        if (mFirstTimeInitialized) return;
328
329        // Create orientation listenter. This should be done first because it
330        // takes some time to get first orientation.
331        mOrientationListener = new MyOrientationEventListener(Camera.this);
332        mOrientationListener.enable();
333
334        // Initialize location sevice.
335        mLocationManager = (LocationManager)
336                getSystemService(Context.LOCATION_SERVICE);
337        mRecordLocation = RecordLocationPreference.get(
338                mPreferences, getContentResolver());
339        initGpsOnScreenIndicator();
340        if (mRecordLocation) startReceivingLocationUpdates();
341
342        keepMediaProviderInstance();
343        checkStorage();
344
345        // Initialize last picture button.
346        mContentResolver = getContentResolver();
347        if (!mIsImageCaptureIntent)  {
348            findViewById(R.id.camera_switch).setOnClickListener(this);
349            initThumbnailButton();
350        }
351
352        // Initialize shutter button.
353        mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
354        mShutterButton.setOnShutterButtonListener(this);
355        mShutterButton.setVisibility(View.VISIBLE);
356
357        mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle);
358        updateFocusIndicator();
359
360        initializeScreenBrightness();
361        installIntentFilter();
362        initializeFocusTone();
363        initializeZoom();
364        // xlarge devices use indicator wheel. Other devices use head-up display.
365        if (mIndicatorWheel == null) {
366            mHeadUpDisplay = new CameraHeadUpDisplay(this);
367            mHeadUpDisplay.setListener(new MyHeadUpDisplayListener());
368            initializeHeadUpDisplay();
369        }
370        mFirstTimeInitialized = true;
371        changeHeadUpDisplayState();
372        addIdleHandler();
373    }
374
375    private void addIdleHandler() {
376        MessageQueue queue = Looper.myQueue();
377        queue.addIdleHandler(new MessageQueue.IdleHandler() {
378            public boolean queueIdle() {
379                Storage.ensureOSXCompatible();
380                return false;
381            }
382        });
383    }
384
385    private void initThumbnailButton() {
386        mThumbnailButton =
387                (RotateImageView) findViewById(R.id.review_thumbnail);
388        if (mThumbnailButton != null) {
389            mThumbnailButton.setOnClickListener(this);
390            mThumbnailButton.loadData(LAST_THUMB_PATH);
391            updateThumbnailButton();
392        }
393    }
394
395    private void updateThumbnailButton() {
396        if (mThumbnailButton == null) return;
397        // Update last image if URI is invalid and the storage is ready.
398        if (!mThumbnailButton.isUriValid() && mPicturesRemaining >= 0) {
399            Storage.Thumbnail thumbnail =
400                    Storage.getLastImageThumbnail(mContentResolver);
401            if (thumbnail != null) {
402                mThumbnailButton.setData(thumbnail.getOriginalUri(),
403                        thumbnail.getBitmap(mContentResolver));
404            } else {
405                mThumbnailButton.setData(null, null);
406            }
407        }
408        mThumbnailButton.setVisibility(
409                (mThumbnailButton.getUri() != null) ? View.VISIBLE : View.GONE);
410    }
411
412    // If the activity is paused and resumed, this method will be called in
413    // onResume.
414    private void initializeSecondTime() {
415        // Start orientation listener as soon as possible because it takes
416        // some time to get first orientation.
417        mOrientationListener.enable();
418
419        // Start location update if needed.
420        mRecordLocation = RecordLocationPreference.get(
421                mPreferences, getContentResolver());
422        if (mRecordLocation) startReceivingLocationUpdates();
423
424        installIntentFilter();
425        initializeFocusTone();
426        initializeZoom();
427        changeHeadUpDisplayState();
428
429        keepMediaProviderInstance();
430        checkStorage();
431
432        if (!mIsImageCaptureIntent) {
433            updateThumbnailButton();
434        }
435    }
436
437    private void initializeZoom() {
438        if (!mParameters.isZoomSupported()) return;
439
440        mZoomMax = mParameters.getMaxZoom();
441        mSmoothZoomSupported = mParameters.isSmoothZoomSupported();
442        if (mZoomPicker != null) {
443            mZoomPicker.setZoomRatios(getZoomRatios());
444            mZoomPicker.setZoomIndex(mParameters.getZoom());
445            mZoomPicker.setSmoothZoomSupported(mSmoothZoomSupported);
446            mZoomPicker.setOnZoomChangeListener(
447                    new ZoomPicker.OnZoomChangedListener() {
448                // only for immediate zoom
449                public void onZoomValueChanged(int index) {
450                    Camera.this.onZoomValueChanged(index);
451                }
452
453                // only for smooth zoom
454                public void onZoomStateChanged(int state) {
455                    if (mPausing) return;
456
457                    Log.v(TAG, "zoom picker state=" + state);
458                    if (state == mZoomPicker.ZOOM_IN) {
459                        Camera.this.onZoomValueChanged(mZoomMax);
460                    } else if (state == mZoomPicker.ZOOM_OUT){
461                        Camera.this.onZoomValueChanged(0);
462                    } else {
463                        mTargetZoomValue = -1;
464                        if (mZoomState == ZOOM_START) {
465                            mZoomState = ZOOM_STOPPING;
466                            mCameraDevice.stopSmoothZoom();
467                        }
468                    }
469                }
470            });
471        }
472
473        mCameraDevice.setZoomChangeListener(mZoomListener);
474    }
475
476    private void onZoomValueChanged(int index) {
477        // Not useful to change zoom value when the activity is paused.
478        if (mPausing) return;
479
480        if (mSmoothZoomSupported) {
481            if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) {
482                mTargetZoomValue = index;
483                if (mZoomState == ZOOM_START) {
484                    mZoomState = ZOOM_STOPPING;
485                    mCameraDevice.stopSmoothZoom();
486                }
487            } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) {
488                mTargetZoomValue = index;
489                mCameraDevice.startSmoothZoom(index);
490                mZoomState = ZOOM_START;
491            }
492        } else {
493            mZoomValue = index;
494            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
495        }
496    }
497
498    private float[] getZoomRatios() {
499        if(!mParameters.isZoomSupported()) return null;
500        List<Integer> zoomRatios = mParameters.getZoomRatios();
501        float result[] = new float[zoomRatios.size()];
502        for (int i = 0, n = result.length; i < n; ++i) {
503            result[i] = (float) zoomRatios.get(i) / 100f;
504        }
505        return result;
506    }
507
508    private int mLocation[] = new int[2];
509    private class PopupGestureListener extends
510            GestureDetector.SimpleOnGestureListener {
511        public boolean onDown(MotionEvent e) {
512            // Check if the popup window is visible.
513            View v = mIndicatorWheel.getActivePopupWindow();
514            if (v == null) return false;
515
516            int x = Math.round(e.getX());
517            int y = Math.round(e.getY());
518
519            // Dismiss the popup window if users touch on the outside.
520            v.getLocationOnScreen(mLocation);
521            if (x < mLocation[0] || (x > mLocation[0] + v.getWidth())
522                    || y < mLocation[1] || (y > mLocation[1] + v.getHeight())) {
523                // Let indicator wheel handle its own event.
524                mIndicatorWheel.getLocationOnScreen(mLocation);
525                if (x < mLocation[0] || (x > mLocation[0] + mIndicatorWheel.getWidth())
526                        || y < mLocation[1] || (y > mLocation[1] + mIndicatorWheel.getHeight())) {
527                    mIndicatorWheel.dismissSettingPopup();
528                }
529                // Let event fall through.
530            }
531            return false;
532        }
533    }
534
535    @Override
536    public boolean dispatchTouchEvent(MotionEvent m) {
537        // Check if the popup window should be dismissed first.
538        if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) {
539            return true;
540        }
541
542        return super.dispatchTouchEvent(m);
543    }
544
545    LocationListener [] mLocationListeners = new LocationListener[] {
546            new LocationListener(LocationManager.GPS_PROVIDER),
547            new LocationListener(LocationManager.NETWORK_PROVIDER)
548    };
549
550    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
551        @Override
552        public void onReceive(Context context, Intent intent) {
553            String action = intent.getAction();
554            if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
555                    || action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
556                    || action.equals(Intent.ACTION_MEDIA_CHECKING)) {
557                checkStorage();
558            } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
559                checkStorage();
560                if (!mIsImageCaptureIntent)  {
561                    updateThumbnailButton();
562                }
563            }
564        }
565    };
566
567    private void initializeCameraPicker() {
568        mCameraPicker = (CameraPicker) findViewById(R.id.camera_picker);
569        if (mCameraPicker != null) {
570            mCameraPicker.setImageResource(R.drawable.camera_toggle);
571            ListPreference pref = mPreferenceGroup.findPreference(
572                    CameraSettings.KEY_CAMERA_ID);
573            if (pref != null) {
574                mCameraPicker.initialize(pref);
575                mCameraPicker.setListener(new MyCameraPickerListener());
576            }
577        }
578    }
579
580    private void initGpsOnScreenIndicator() {
581        mGpsNoSignalView = findViewById(R.id.onscreen_gps_indicator_no_signal);
582        mGpsHasSignalView = findViewById(R.id.onscreen_gps_indicator_on);
583    }
584
585    private void showGpsOnScreenIndicator(boolean hasSignal) {
586        if (hasSignal) {
587            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
588            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.VISIBLE);
589        } else {
590            if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.VISIBLE);
591            if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
592        }
593    }
594
595    private void hideGpsOnScreenIndicator() {
596        if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE);
597        if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE);
598    }
599
600    private class LocationListener
601            implements android.location.LocationListener {
602        Location mLastLocation;
603        boolean mValid = false;
604        String mProvider;
605
606        public LocationListener(String provider) {
607            mProvider = provider;
608            mLastLocation = new Location(mProvider);
609        }
610
611        public void onLocationChanged(Location newLocation) {
612            if (newLocation.getLatitude() == 0.0
613                    && newLocation.getLongitude() == 0.0) {
614                // Hack to filter out 0.0,0.0 locations
615                return;
616            }
617            // If GPS is available before start camera, we won't get status
618            // update so update GPS indicator when we receive data.
619            if (mRecordLocation
620                    && LocationManager.GPS_PROVIDER.equals(mProvider)) {
621                if (mHeadUpDisplay != null) {
622                    mHeadUpDisplay.setGpsHasSignal(true);
623                }
624                showGpsOnScreenIndicator(true);
625            }
626            if (!mValid) {
627                Log.d(TAG, "Got first location.");
628            }
629            mLastLocation.set(newLocation);
630            mValid = true;
631        }
632
633        public void onProviderEnabled(String provider) {
634        }
635
636        public void onProviderDisabled(String provider) {
637            mValid = false;
638        }
639
640        public void onStatusChanged(
641                String provider, int status, Bundle extras) {
642            switch(status) {
643                case LocationProvider.OUT_OF_SERVICE:
644                case LocationProvider.TEMPORARILY_UNAVAILABLE: {
645                    mValid = false;
646                    if (mRecordLocation &&
647                            LocationManager.GPS_PROVIDER.equals(provider)) {
648                        if (mHeadUpDisplay != null) {
649                            mHeadUpDisplay.setGpsHasSignal(false);
650                        }
651                        showGpsOnScreenIndicator(false);
652                    }
653                    break;
654                }
655            }
656        }
657
658        public Location current() {
659            return mValid ? mLastLocation : null;
660        }
661    }
662
663    private final class ShutterCallback
664            implements android.hardware.Camera.ShutterCallback {
665        public void onShutter() {
666            mShutterCallbackTime = System.currentTimeMillis();
667            mShutterLag = mShutterCallbackTime - mCaptureStartTime;
668            Log.v(TAG, "mShutterLag = " + mShutterLag + "ms");
669            clearFocusState();
670        }
671    }
672
673    private final class PostViewPictureCallback implements PictureCallback {
674        public void onPictureTaken(
675                byte [] data, android.hardware.Camera camera) {
676            mPostViewPictureCallbackTime = System.currentTimeMillis();
677            Log.v(TAG, "mShutterToPostViewCallbackTime = "
678                    + (mPostViewPictureCallbackTime - mShutterCallbackTime)
679                    + "ms");
680        }
681    }
682
683    private final class RawPictureCallback implements PictureCallback {
684        public void onPictureTaken(
685                byte [] rawData, android.hardware.Camera camera) {
686            mRawPictureCallbackTime = System.currentTimeMillis();
687            Log.v(TAG, "mShutterToRawCallbackTime = "
688                    + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
689        }
690    }
691
692    private final class JpegPictureCallback implements PictureCallback {
693        Location mLocation;
694
695        public JpegPictureCallback(Location loc) {
696            mLocation = loc;
697        }
698
699        public void onPictureTaken(
700                final byte [] jpegData, final android.hardware.Camera camera) {
701            if (mPausing) {
702                return;
703            }
704
705            mJpegPictureCallbackTime = System.currentTimeMillis();
706            // If postview callback has arrived, the captured image is displayed
707            // in postview callback. If not, the captured image is displayed in
708            // raw picture callback.
709            if (mPostViewPictureCallbackTime != 0) {
710                mShutterToPictureDisplayedTime =
711                        mPostViewPictureCallbackTime - mShutterCallbackTime;
712                mPictureDisplayedToJpegCallbackTime =
713                        mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
714            } else {
715                mShutterToPictureDisplayedTime =
716                        mRawPictureCallbackTime - mShutterCallbackTime;
717                mPictureDisplayedToJpegCallbackTime =
718                        mJpegPictureCallbackTime - mRawPictureCallbackTime;
719            }
720            Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
721                    + mPictureDisplayedToJpegCallbackTime + "ms");
722
723            if (!mIsImageCaptureIntent) {
724                enableCameraControls(true);
725
726                // We want to show the taken picture for a while, so we wait
727                // for at least 1.2 second before restarting the preview.
728                long delay = 1200 - mPictureDisplayedToJpegCallbackTime;
729                if (delay < 0) {
730                    restartPreview();
731                } else {
732                    mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay);
733                }
734            }
735            storeImage(jpegData, camera, mLocation);
736
737            // Check this in advance of each shot so we don't add to shutter
738            // latency. It's true that someone else could write to the SD card in
739            // the mean time and fill it, but that could have happened between the
740            // shutter press and saving the JPEG too.
741            checkStorage();
742
743            if (!mHandler.hasMessages(RESTART_PREVIEW)) {
744                long now = System.currentTimeMillis();
745                mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
746                Log.v(TAG, "mJpegCallbackFinishTime = "
747                        + mJpegCallbackFinishTime + "ms");
748                mJpegPictureCallbackTime = 0;
749            }
750        }
751    }
752
753    private final class AutoFocusCallback
754            implements android.hardware.Camera.AutoFocusCallback {
755        public void onAutoFocus(
756                boolean focused, android.hardware.Camera camera) {
757            mFocusCallbackTime = System.currentTimeMillis();
758            mAutoFocusTime = mFocusCallbackTime - mFocusStartTime;
759            Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
760            if (mFocusState == FOCUSING_SNAP_ON_FINISH) {
761                // Take the picture no matter focus succeeds or fails. No need
762                // to play the AF sound if we're about to play the shutter
763                // sound.
764                if (focused) {
765                    mFocusState = FOCUS_SUCCESS;
766                } else {
767                    mFocusState = FOCUS_FAIL;
768                }
769                capture();
770            } else if (mFocusState == FOCUSING) {
771                // User is half-pressing the focus key. Play the focus tone.
772                // Do not take the picture now.
773                if (focused) {
774                    mFocusState = FOCUS_SUCCESS;
775                    if (mFocusToneGenerator != null) {
776                        mFocusToneGenerator.startTone(ToneGenerator.TONE_PROP_BEEP2);
777                    }
778                } else {
779                    mFocusState = FOCUS_FAIL;
780                }
781            } else if (mFocusState == FOCUS_NOT_STARTED) {
782                // User has released the focus key before focus completes.
783                // Do nothing.
784            }
785            updateFocusIndicator();
786        }
787    }
788
789    private final class ZoomListener
790            implements android.hardware.Camera.OnZoomChangeListener {
791        public void onZoomChange(
792                int value, boolean stopped, android.hardware.Camera camera) {
793            Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped);
794            mZoomValue = value;
795
796            // Update the UI when we get zoom value.
797            if (mZoomPicker != null) mZoomPicker.setZoomIndex(value);
798
799            // Keep mParameters up to date. We do not getParameter again in
800            // takePicture. If we do not do this, wrong zoom value will be set.
801            mParameters.setZoom(value);
802
803            if (stopped && mZoomState != ZOOM_STOPPED) {
804                if (mTargetZoomValue != -1 && value != mTargetZoomValue) {
805                    mCameraDevice.startSmoothZoom(mTargetZoomValue);
806                    mZoomState = ZOOM_START;
807                } else {
808                    mZoomState = ZOOM_STOPPED;
809                }
810            }
811        }
812    }
813
814    public void storeImage(final byte[] data,
815            android.hardware.Camera camera, Location loc) {
816        if (!mIsImageCaptureIntent) {
817            long dateTaken = System.currentTimeMillis();
818            String title = createName(dateTaken);
819
820            Storage.Thumbnail thumbnail = Storage.addImage(
821                    mContentResolver, title, dateTaken, loc, data);
822
823            if (thumbnail != null && mThumbnailButton != null) {
824                mThumbnailButton.setData(thumbnail.getOriginalUri(),
825                        thumbnail.getBitmap(mContentResolver));
826                mThumbnailButton.setVisibility(View.VISIBLE);
827
828                sendBroadcast(new Intent("com.android.camera.NEW_PICTURE",
829                        thumbnail.getOriginalUri()));
830            }
831        } else {
832            mJpegImageData = data;
833            if (!mQuickCapture) {
834                showPostCaptureAlert();
835            } else {
836                doAttach();
837            }
838        }
839    }
840
841    private void capture() {
842        // If we are already in the middle of taking a snapshot then ignore.
843        if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS || mCameraDevice == null) {
844            return;
845        }
846        mCaptureStartTime = System.currentTimeMillis();
847        mPostViewPictureCallbackTime = 0;
848        enableCameraControls(false);
849        mStatus = SNAPSHOT_IN_PROGRESS;
850        mJpegImageData = null;
851
852        // See android.hardware.Camera.Parameters.setRotation for
853        // documentation.
854        int rotation = 0;
855        if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) {
856            CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
857            if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
858                rotation = (info.orientation - mOrientation + 360) % 360;
859            } else {  // back-facing camera
860                rotation = (info.orientation + mOrientation) % 360;
861            }
862        }
863        mParameters.setRotation(rotation);
864
865        // Clear previous GPS location from the parameters.
866        mParameters.removeGpsData();
867
868        // We always encode GpsTimeStamp
869        mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000);
870
871        // Set GPS location.
872        Location loc = mRecordLocation ? getCurrentLocation() : null;
873        if (loc != null) {
874            double lat = loc.getLatitude();
875            double lon = loc.getLongitude();
876            boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d);
877
878            if (hasLatLon) {
879                Log.d(TAG, "Set gps location");
880                mParameters.setGpsLatitude(lat);
881                mParameters.setGpsLongitude(lon);
882                mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase());
883                if (loc.hasAltitude()) {
884                    mParameters.setGpsAltitude(loc.getAltitude());
885                } else {
886                    // for NETWORK_PROVIDER location provider, we may have
887                    // no altitude information, but the driver needs it, so
888                    // we fake one.
889                    mParameters.setGpsAltitude(0);
890                }
891                if (loc.getTime() != 0) {
892                    // Location.getTime() is UTC in milliseconds.
893                    // gps-timestamp is UTC in seconds.
894                    long utcTimeSeconds = loc.getTime() / 1000;
895                    mParameters.setGpsTimestamp(utcTimeSeconds);
896                }
897            } else {
898                loc = null;
899            }
900        }
901
902        mCameraDevice.setParameters(mParameters);
903
904        mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback,
905                mPostViewPictureCallback, new JpegPictureCallback(loc));
906        mPreviewing = false;
907    }
908
909    private boolean saveDataToFile(String filePath, byte[] data) {
910        FileOutputStream f = null;
911        try {
912            f = new FileOutputStream(filePath);
913            f.write(data);
914        } catch (IOException e) {
915            return false;
916        } finally {
917            Util.closeSilently(f);
918        }
919        return true;
920    }
921
922    private String createName(long dateTaken) {
923        Date date = new Date(dateTaken);
924        SimpleDateFormat dateFormat = new SimpleDateFormat(
925                getString(R.string.image_file_name_format));
926
927        return dateFormat.format(date);
928    }
929
930    @Override
931    public void onCreate(Bundle icicle) {
932        super.onCreate(icicle);
933
934        mIsImageCaptureIntent = isImageCaptureIntent();
935        if (mIsImageCaptureIntent) {
936            setContentView(R.layout.camera_attach);
937        } else {
938            setContentView(R.layout.camera);
939        }
940        mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview);
941
942        mPreferences = new ComboPreferences(this);
943        CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal());
944
945        mCameraId = CameraSettings.readPreferredCameraId(mPreferences);
946
947        //Testing purpose. Launch a specific camera through the intent extras.
948        int intentCameraId = Util.getCameraFacingIntentExtras(this);
949        if (intentCameraId != -1) {
950            mCameraId = intentCameraId;
951        }
952
953        mPreferences.setLocalId(this, mCameraId);
954        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
955
956        mNumberOfCameras = CameraHolder.instance().getNumberOfCameras();
957        mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
958
959        // we need to reset exposure for the preview
960        resetExposureCompensation();
961        /*
962         * To reduce startup time, we start the preview in another thread.
963         * We make sure the preview is started at the end of onCreate.
964         */
965        Thread startPreviewThread = new Thread(new Runnable() {
966            public void run() {
967                try {
968                    mStartPreviewFail = false;
969                    startPreview();
970                } catch (CameraHardwareException e) {
971                    // In eng build, we throw the exception so that test tool
972                    // can detect it and report it
973                    if ("eng".equals(Build.TYPE)) {
974                        throw new RuntimeException(e);
975                    }
976                    mStartPreviewFail = true;
977                }
978            }
979        });
980        startPreviewThread.start();
981
982        // don't set mSurfaceHolder here. We have it set ONLY within
983        // surfaceChanged / surfaceDestroyed, other parts of the code
984        // assume that when it is set, the surface is also set.
985        SurfaceHolder holder = mSurfaceView.getHolder();
986        holder.addCallback(this);
987        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
988
989        if (mIsImageCaptureIntent) {
990            setupCaptureParams();
991
992            View reviewControl = findViewById(R.id.review_control);
993            reviewControl.setVisibility(View.VISIBLE);
994            reviewControl.findViewById(R.id.btn_cancel).setOnClickListener(this);
995            reviewControl.findViewById(R.id.btn_retake).setOnClickListener(this);
996            reviewControl.findViewById(R.id.btn_done).setOnClickListener(this);
997        } else {
998            mSwitcher = (SwitcherSet) findViewById(R.id.camera_switch);
999            mSwitcher.setVisibility(View.VISIBLE);
1000            mSwitcher.setOnSwitchListener(this);
1001        }
1002
1003        // Make sure preview is started.
1004        try {
1005            startPreviewThread.join();
1006            if (mStartPreviewFail) {
1007                showCameraErrorAndFinish();
1008                return;
1009            }
1010        } catch (InterruptedException ex) {
1011            // ignore
1012        }
1013
1014        mBackCameraId = CameraHolder.instance().getBackCameraId();
1015        mFrontCameraId = CameraHolder.instance().getFrontCameraId();
1016
1017        // Do this after starting preview because it depends on camera
1018        // parameters.
1019        initializeIndicatorWheel();
1020        initializeCameraPicker();
1021
1022        mZoomPicker = (ZoomPicker) findViewById(R.id.zoom_picker);
1023        if (mZoomPicker != null) mZoomPicker.setEnabled(true); // disabled initially in xml
1024    }
1025
1026    private void changeHeadUpDisplayState() {
1027        if (mHeadUpDisplay == null) return;
1028        // If the camera resumes behind the lock screen, the orientation
1029        // will be portrait. That causes OOM when we try to allocation GPU
1030        // memory for the GLSurfaceView again when the orientation changes. So,
1031        // we delayed initialization of HeadUpDisplay until the orientation
1032        // becomes landscape.
1033        Configuration config = getResources().getConfiguration();
1034        if (config.orientation == Configuration.ORIENTATION_LANDSCAPE
1035                && !mPausing && mFirstTimeInitialized) {
1036            if (mGLRootView == null) attachHeadUpDisplay();
1037        } else if (mGLRootView != null) {
1038            detachHeadUpDisplay();
1039        }
1040    }
1041
1042    private void overrideCameraSettings(final String flashMode,
1043            final String whiteBalance, final String focusMode) {
1044        if (mHeadUpDisplay != null) {
1045            mHeadUpDisplay.overrideSettings(
1046                    CameraSettings.KEY_FLASH_MODE, flashMode,
1047                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1048                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1049        }
1050        if (mIndicatorWheel != null) {
1051            mIndicatorWheel.overrideSettings(
1052                    CameraSettings.KEY_FLASH_MODE, flashMode,
1053                    CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
1054                    CameraSettings.KEY_FOCUS_MODE, focusMode);
1055        }
1056    }
1057
1058    private void updateSceneModeUI() {
1059        // If scene mode is set, we cannot set flash mode, white balance, and
1060        // focus mode, instead, we read it from driver
1061        if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1062            overrideCameraSettings(mParameters.getFlashMode(),
1063                    mParameters.getWhiteBalance(), mParameters.getFocusMode());
1064        } else {
1065            overrideCameraSettings(null, null, null);
1066        }
1067    }
1068
1069    private void loadCameraPreferences() {
1070        CameraSettings settings = new CameraSettings(this, mInitialParams,
1071                mCameraId, CameraHolder.instance().getCameraInfo());
1072        mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences);
1073    }
1074
1075    private void initializeIndicatorWheel() {
1076        mIndicatorWheel = (IndicatorWheel) findViewById(R.id.indicator_wheel);
1077        if (mIndicatorWheel == null) return;
1078        loadCameraPreferences();
1079
1080        String[] keys = new String[]{CameraSettings.KEY_FLASH_MODE,
1081            CameraSettings.KEY_WHITE_BALANCE,
1082            CameraSettings.KEY_COLOR_EFFECT,
1083            CameraSettings.KEY_SCENE_MODE};
1084        mIndicatorWheel.initialize(this, mPreferenceGroup, keys, true);
1085        mIndicatorWheel.setListener(new MyIndicatorWheelListener());
1086        mPopupGestureDetector = new GestureDetector(this,
1087                new PopupGestureListener());
1088        updateSceneModeUI();
1089    }
1090
1091    private void initializeHeadUpDisplay() {
1092        if (mHeadUpDisplay == null) return;
1093        loadCameraPreferences();
1094
1095        // If we have zoom picker, do not show zoom control on head-up display.
1096        float[] zoomRatios = null;
1097        if (mZoomPicker == null) zoomRatios = getZoomRatios();
1098        mHeadUpDisplay.initialize(this, mPreferenceGroup,
1099                zoomRatios, mOrientationCompensation);
1100        if (mZoomPicker == null && mParameters.isZoomSupported()) {
1101            mHeadUpDisplay.setZoomListener(new ZoomControllerListener() {
1102                public void onZoomChanged(
1103                        int index, float ratio, boolean isMoving) {
1104                    onZoomValueChanged(index);
1105                }
1106            });
1107        }
1108        updateSceneModeUI();
1109    }
1110
1111    private void attachHeadUpDisplay() {
1112        mHeadUpDisplay.setOrientation(mOrientationCompensation);
1113        if (mParameters.isZoomSupported()) {
1114            mHeadUpDisplay.setZoomIndex(mZoomValue);
1115        }
1116        ViewGroup frame = (ViewGroup) findViewById(R.id.frame);
1117        mGLRootView = new GLRootView(this);
1118        mGLRootView.setContentPane(mHeadUpDisplay);
1119        frame.addView(mGLRootView);
1120    }
1121
1122    private void detachHeadUpDisplay() {
1123        mHeadUpDisplay.setGpsHasSignal(false);
1124        mHeadUpDisplay.collapse();
1125        ((ViewGroup) mGLRootView.getParent()).removeView(mGLRootView);
1126        mGLRootView = null;
1127    }
1128
1129    private boolean collapseCameraControls() {
1130        if (mHeadUpDisplay != null && mHeadUpDisplay.collapse()) {
1131            return true;
1132        }
1133        if (mIndicatorWheel != null && mIndicatorWheel.dismissSettingPopup()) {
1134            return true;
1135        }
1136        return false;
1137    }
1138
1139    private void enableCameraControls(boolean enable) {
1140        if (mHeadUpDisplay != null) mHeadUpDisplay.setEnabled(enable);
1141        if (mIndicatorWheel != null) mIndicatorWheel.setEnabled(enable);
1142        if (mCameraPicker != null) mCameraPicker.setEnabled(enable);
1143        if (mZoomPicker != null) mZoomPicker.setEnabled(enable);
1144        if (mSwitcher != null) mSwitcher.setEnabled(enable);
1145    }
1146
1147    public static int roundOrientation(int orientation) {
1148        return ((orientation + 45) / 90 * 90) % 360;
1149    }
1150
1151    private class MyOrientationEventListener
1152            extends OrientationEventListener {
1153        public MyOrientationEventListener(Context context) {
1154            super(context);
1155        }
1156
1157        @Override
1158        public void onOrientationChanged(int orientation) {
1159            // We keep the last known orientation. So if the user first orient
1160            // the camera then point the camera to floor or sky, we still have
1161            // the correct orientation.
1162            if (orientation == ORIENTATION_UNKNOWN) return;
1163            mOrientation = roundOrientation(orientation);
1164            // When the screen is unlocked, display rotation may change. Always
1165            // calculate the up-to-date orientationCompensation.
1166            int orientationCompensation = mOrientation
1167                    + Util.getDisplayRotation(Camera.this);
1168            if (mOrientationCompensation != orientationCompensation) {
1169                mOrientationCompensation = orientationCompensation;
1170                if (!mIsImageCaptureIntent) {
1171                    setOrientationIndicator(mOrientationCompensation);
1172                }
1173                if (mHeadUpDisplay != null) {
1174                    mHeadUpDisplay.setOrientation(mOrientationCompensation);
1175                }
1176            }
1177        }
1178    }
1179
1180    private void setOrientationIndicator(int degree) {
1181        RotateImageView icon = (RotateImageView) findViewById(
1182                R.id.review_thumbnail);
1183        if (icon != null) icon.setDegree(degree);
1184
1185        icon = (RotateImageView) findViewById(R.id.camera_switch_icon);
1186        if (icon != null) icon.setDegree(degree);
1187        icon = (RotateImageView) findViewById(R.id.video_switch_icon);
1188        if (icon != null) icon.setDegree(degree);
1189    }
1190
1191    @Override
1192    public void onStart() {
1193        super.onStart();
1194        if (!mIsImageCaptureIntent) {
1195            mSwitcher.setSwitch(SWITCH_CAMERA);
1196        }
1197    }
1198
1199    @Override
1200    public void onStop() {
1201        super.onStop();
1202        if (mMediaProviderClient != null) {
1203            mMediaProviderClient.release();
1204            mMediaProviderClient = null;
1205        }
1206    }
1207
1208    private void checkStorage() {
1209        mPicturesRemaining = Storage.getAvailableSpace();
1210        if (mPicturesRemaining > 0) {
1211            mPicturesRemaining /= 1500000;
1212        }
1213        updateStorageHint();
1214    }
1215
1216    public void onClick(View v) {
1217        switch (v.getId()) {
1218            case R.id.btn_retake:
1219                hidePostCaptureAlert();
1220                restartPreview();
1221                break;
1222            case R.id.review_thumbnail:
1223                if (isCameraIdle()) {
1224                    viewImage(mThumbnailButton);
1225                }
1226                break;
1227            case R.id.btn_done:
1228                doAttach();
1229                break;
1230            case R.id.btn_cancel:
1231                doCancel();
1232                break;
1233            case R.id.btn_gallery:
1234                gotoGallery();
1235                break;
1236        }
1237    }
1238
1239    private void doAttach() {
1240        if (mPausing) {
1241            return;
1242        }
1243
1244        byte[] data = mJpegImageData;
1245
1246        if (mCropValue == null) {
1247            // First handle the no crop case -- just return the value.  If the
1248            // caller specifies a "save uri" then write the data to it's
1249            // stream. Otherwise, pass back a scaled down version of the bitmap
1250            // directly in the extras.
1251            if (mSaveUri != null) {
1252                OutputStream outputStream = null;
1253                try {
1254                    outputStream = mContentResolver.openOutputStream(mSaveUri);
1255                    outputStream.write(data);
1256                    outputStream.close();
1257
1258                    setResult(RESULT_OK);
1259                    finish();
1260                } catch (IOException ex) {
1261                    // ignore exception
1262                } finally {
1263                    Util.closeSilently(outputStream);
1264                }
1265            } else {
1266                int orientation = Exif.getOrientation(data);
1267                Bitmap bitmap = Util.makeBitmap(data, 50 * 1024);
1268                bitmap = Util.rotate(bitmap, orientation);
1269                setResult(RESULT_OK,
1270                        new Intent("inline-data").putExtra("data", bitmap));
1271                finish();
1272            }
1273        } else {
1274            // Save the image to a temp file and invoke the cropper
1275            Uri tempUri = null;
1276            FileOutputStream tempStream = null;
1277            try {
1278                File path = getFileStreamPath(sTempCropFilename);
1279                path.delete();
1280                tempStream = openFileOutput(sTempCropFilename, 0);
1281                tempStream.write(data);
1282                tempStream.close();
1283                tempUri = Uri.fromFile(path);
1284            } catch (FileNotFoundException ex) {
1285                setResult(Activity.RESULT_CANCELED);
1286                finish();
1287                return;
1288            } catch (IOException ex) {
1289                setResult(Activity.RESULT_CANCELED);
1290                finish();
1291                return;
1292            } finally {
1293                Util.closeSilently(tempStream);
1294            }
1295
1296            Bundle newExtras = new Bundle();
1297            if (mCropValue.equals("circle")) {
1298                newExtras.putString("circleCrop", "true");
1299            }
1300            if (mSaveUri != null) {
1301                newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
1302            } else {
1303                newExtras.putBoolean("return-data", true);
1304            }
1305
1306            Intent cropIntent = new Intent("com.android.camera.action.CROP");
1307
1308            cropIntent.setData(tempUri);
1309            cropIntent.putExtras(newExtras);
1310
1311            startActivityForResult(cropIntent, CROP_MSG);
1312        }
1313    }
1314
1315    private void doCancel() {
1316        setResult(RESULT_CANCELED, new Intent());
1317        finish();
1318    }
1319
1320    public void onShutterButtonFocus(ShutterButton button, boolean pressed) {
1321        if (mPausing) {
1322            return;
1323        }
1324        switch (button.getId()) {
1325            case R.id.shutter_button:
1326                doFocus(pressed);
1327                break;
1328        }
1329    }
1330
1331    public void onShutterButtonClick(ShutterButton button) {
1332        if (mPausing) {
1333            return;
1334        }
1335        switch (button.getId()) {
1336            case R.id.shutter_button:
1337                doSnap();
1338                break;
1339        }
1340    }
1341
1342    private OnScreenHint mStorageHint;
1343
1344    private void updateStorageHint() {
1345        String noStorageText = null;
1346
1347        if (mPicturesRemaining == Storage.UNAVAILABLE) {
1348            noStorageText = getString(R.string.no_storage);
1349        } else if (mPicturesRemaining == Storage.PREPARING) {
1350            noStorageText = getString(R.string.preparing_sd);
1351        } else if (mPicturesRemaining == Storage.UNKNOWN_SIZE) {
1352            noStorageText = getString(R.string.access_sd_fail);
1353        } else if (mPicturesRemaining < 1L) {
1354            noStorageText = getString(R.string.not_enough_space);
1355        }
1356
1357        if (noStorageText != null) {
1358            if (mStorageHint == null) {
1359                mStorageHint = OnScreenHint.makeText(this, noStorageText);
1360            } else {
1361                mStorageHint.setText(noStorageText);
1362            }
1363            mStorageHint.show();
1364        } else if (mStorageHint != null) {
1365            mStorageHint.cancel();
1366            mStorageHint = null;
1367        }
1368    }
1369
1370    private void installIntentFilter() {
1371        // install an intent filter to receive SD card related events.
1372        IntentFilter intentFilter =
1373                new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
1374        intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
1375        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
1376        intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
1377        intentFilter.addDataScheme("file");
1378        registerReceiver(mReceiver, intentFilter);
1379        mDidRegister = true;
1380    }
1381
1382    private void initializeFocusTone() {
1383        // Initialize focus tone generator.
1384        try {
1385            mFocusToneGenerator = new ToneGenerator(
1386                    AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME);
1387        } catch (Throwable ex) {
1388            Log.w(TAG, "Exception caught while creating tone generator: ", ex);
1389            mFocusToneGenerator = null;
1390        }
1391    }
1392
1393    private void initializeScreenBrightness() {
1394        Window win = getWindow();
1395        // Overright the brightness settings if it is automatic
1396        int mode = Settings.System.getInt(
1397                getContentResolver(),
1398                Settings.System.SCREEN_BRIGHTNESS_MODE,
1399                Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
1400        if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {
1401            WindowManager.LayoutParams winParams = win.getAttributes();
1402            winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS;
1403            win.setAttributes(winParams);
1404        }
1405    }
1406
1407    @Override
1408    protected void onResume() {
1409        super.onResume();
1410
1411        mPausing = false;
1412        mJpegPictureCallbackTime = 0;
1413        mZoomValue = 0;
1414
1415        // Start the preview if it is not started.
1416        if (!mPreviewing && !mStartPreviewFail) {
1417            resetExposureCompensation();
1418            if (!restartPreview()) return;
1419        }
1420
1421        if (mSurfaceHolder != null) {
1422            // If first time initialization is not finished, put it in the
1423            // message queue.
1424            if (!mFirstTimeInitialized) {
1425                mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1426            } else {
1427                initializeSecondTime();
1428            }
1429        }
1430        keepScreenOnAwhile();
1431    }
1432
1433    @Override
1434    public void onConfigurationChanged(Configuration config) {
1435        super.onConfigurationChanged(config);
1436        changeHeadUpDisplayState();
1437    }
1438
1439    @Override
1440    protected void onPause() {
1441        mPausing = true;
1442        stopPreview();
1443        // Close the camera now because other activities may need to use it.
1444        closeCamera();
1445        resetScreenOn();
1446        collapseCameraControls();
1447        changeHeadUpDisplayState();
1448
1449        if (mFirstTimeInitialized) {
1450            mOrientationListener.disable();
1451            if (!mIsImageCaptureIntent) {
1452                if (mThumbnailButton != null) {
1453                    mThumbnailButton.storeData(LAST_THUMB_PATH);
1454                }
1455            }
1456            hidePostCaptureAlert();
1457        }
1458
1459        if (mDidRegister) {
1460            unregisterReceiver(mReceiver);
1461            mDidRegister = false;
1462        }
1463        stopReceivingLocationUpdates();
1464
1465        if (mFocusToneGenerator != null) {
1466            mFocusToneGenerator.release();
1467            mFocusToneGenerator = null;
1468        }
1469
1470        if (mStorageHint != null) {
1471            mStorageHint.cancel();
1472            mStorageHint = null;
1473        }
1474
1475        // If we are in an image capture intent and has taken
1476        // a picture, we just clear it in onPause.
1477        mJpegImageData = null;
1478
1479        // Remove the messages in the event queue.
1480        mHandler.removeMessages(RESTART_PREVIEW);
1481        mHandler.removeMessages(FIRST_TIME_INIT);
1482
1483        super.onPause();
1484    }
1485
1486    @Override
1487    protected void onActivityResult(
1488            int requestCode, int resultCode, Intent data) {
1489        switch (requestCode) {
1490            case CROP_MSG: {
1491                Intent intent = new Intent();
1492                if (data != null) {
1493                    Bundle extras = data.getExtras();
1494                    if (extras != null) {
1495                        intent.putExtras(extras);
1496                    }
1497                }
1498                setResult(resultCode, intent);
1499                finish();
1500
1501                File path = getFileStreamPath(sTempCropFilename);
1502                path.delete();
1503
1504                break;
1505            }
1506        }
1507    }
1508
1509    private boolean canTakePicture() {
1510        return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0);
1511    }
1512
1513    private void autoFocus() {
1514        // Initiate autofocus only when preview is started and snapshot is not
1515        // in progress.
1516        if (canTakePicture()) {
1517            enableCameraControls(false);
1518            Log.v(TAG, "Start autofocus.");
1519            mFocusStartTime = System.currentTimeMillis();
1520            mFocusState = FOCUSING;
1521            updateFocusIndicator();
1522            mCameraDevice.autoFocus(mAutoFocusCallback);
1523        }
1524    }
1525
1526    private void cancelAutoFocus() {
1527        // User releases half-pressed focus key.
1528        if (mStatus != SNAPSHOT_IN_PROGRESS && (mFocusState == FOCUSING
1529                || mFocusState == FOCUS_SUCCESS || mFocusState == FOCUS_FAIL)) {
1530            Log.v(TAG, "Cancel autofocus.");
1531            enableCameraControls(true);
1532            mCameraDevice.cancelAutoFocus();
1533        }
1534        if (mFocusState != FOCUSING_SNAP_ON_FINISH) {
1535            clearFocusState();
1536        }
1537    }
1538
1539    private void clearFocusState() {
1540        mFocusState = FOCUS_NOT_STARTED;
1541        updateFocusIndicator();
1542    }
1543
1544    private void updateFocusIndicator() {
1545        if (mFocusRectangle == null) return;
1546
1547        if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) {
1548            mFocusRectangle.showStart();
1549        } else if (mFocusState == FOCUS_SUCCESS) {
1550            mFocusRectangle.showSuccess();
1551        } else if (mFocusState == FOCUS_FAIL) {
1552            mFocusRectangle.showFail();
1553        } else {
1554            mFocusRectangle.clear();
1555        }
1556    }
1557
1558    @Override
1559    public void onBackPressed() {
1560        if (!isCameraIdle()) {
1561            // ignore backs while we're taking a picture
1562            return;
1563        } else if (!collapseCameraControls()) {
1564            super.onBackPressed();
1565        }
1566    }
1567
1568    @Override
1569    public boolean onKeyDown(int keyCode, KeyEvent event) {
1570        switch (keyCode) {
1571            case KeyEvent.KEYCODE_FOCUS:
1572                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1573                    doFocus(true);
1574                }
1575                return true;
1576            case KeyEvent.KEYCODE_CAMERA:
1577                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1578                    doSnap();
1579                }
1580                return true;
1581            case KeyEvent.KEYCODE_DPAD_CENTER:
1582                // If we get a dpad center event without any focused view, move
1583                // the focus to the shutter button and press it.
1584                if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
1585                    // Start auto-focus immediately to reduce shutter lag. After
1586                    // the shutter button gets the focus, doFocus() will be
1587                    // called again but it is fine.
1588                    if (collapseCameraControls()) return true;
1589                    doFocus(true);
1590                    if (mShutterButton.isInTouchMode()) {
1591                        mShutterButton.requestFocusFromTouch();
1592                    } else {
1593                        mShutterButton.requestFocus();
1594                    }
1595                    mShutterButton.setPressed(true);
1596                }
1597                return true;
1598        }
1599
1600        return super.onKeyDown(keyCode, event);
1601    }
1602
1603    @Override
1604    public boolean onKeyUp(int keyCode, KeyEvent event) {
1605        switch (keyCode) {
1606            case KeyEvent.KEYCODE_FOCUS:
1607                if (mFirstTimeInitialized) {
1608                    doFocus(false);
1609                }
1610                return true;
1611        }
1612        return super.onKeyUp(keyCode, event);
1613    }
1614
1615    private void doSnap() {
1616        if (collapseCameraControls()) return;
1617
1618        Log.v(TAG, "doSnap: mFocusState=" + mFocusState);
1619        // If the user has half-pressed the shutter and focus is completed, we
1620        // can take the photo right away. If the focus mode is infinity, we can
1621        // also take the photo.
1622        if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1623                || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1624                || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF)
1625                || (mFocusState == FOCUS_SUCCESS
1626                || mFocusState == FOCUS_FAIL)) {
1627            capture();
1628        } else if (mFocusState == FOCUSING) {
1629            // Half pressing the shutter (i.e. the focus button event) will
1630            // already have requested AF for us, so just request capture on
1631            // focus here.
1632            mFocusState = FOCUSING_SNAP_ON_FINISH;
1633        } else if (mFocusState == FOCUS_NOT_STARTED) {
1634            // Focus key down event is dropped for some reasons. Just ignore.
1635        }
1636    }
1637
1638    private void doFocus(boolean pressed) {
1639        // Do the focus if the mode is not infinity.
1640        if (collapseCameraControls()) return;
1641        if (!(mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)
1642                  || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED)
1643                  || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF))) {
1644            if (pressed) {  // Focus key down.
1645                autoFocus();
1646            } else {  // Focus key up.
1647                cancelAutoFocus();
1648            }
1649        }
1650    }
1651
1652    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
1653        // Make sure we have a surface in the holder before proceeding.
1654        if (holder.getSurface() == null) {
1655            Log.d(TAG, "holder.getSurface() == null");
1656            return;
1657        }
1658
1659        Log.v(TAG, "surfaceChanged. w=" + w + ". h=" + h);
1660
1661        // We need to save the holder for later use, even when the mCameraDevice
1662        // is null. This could happen if onResume() is invoked after this
1663        // function.
1664        mSurfaceHolder = holder;
1665
1666        // The mCameraDevice will be null if it fails to connect to the camera
1667        // hardware. In this case we will show a dialog and then finish the
1668        // activity, so it's OK to ignore it.
1669        if (mCameraDevice == null) return;
1670
1671        // Sometimes surfaceChanged is called after onPause or before onResume.
1672        // Ignore it.
1673        if (mPausing || isFinishing()) return;
1674
1675        // Set preview display if the surface is being created. Preview was
1676        // already started. Also restart the preview if display rotation has
1677        // changed. Sometimes this happens when the device is held in portrait
1678        // and camera app is opened. Rotation animation takes some time and
1679        // display rotation in onCreate may not be what we want.
1680        if (mPreviewing && (Util.getDisplayRotation(this) == mDisplayRotation)
1681                && holder.isCreating()) {
1682            // Set preview display if the surface is being created and preview
1683            // was already started. That means preview display was set to null
1684            // and we need to set it now.
1685            setPreviewDisplay(holder);
1686        } else {
1687            // 1. Restart the preview if the size of surface was changed. The
1688            // framework may not support changing preview display on the fly.
1689            // 2. Start the preview now if surface was destroyed and preview
1690            // stopped.
1691            restartPreview();
1692        }
1693
1694        // If first time initialization is not finished, send a message to do
1695        // it later. We want to finish surfaceChanged as soon as possible to let
1696        // user see preview first.
1697        if (!mFirstTimeInitialized) {
1698            mHandler.sendEmptyMessage(FIRST_TIME_INIT);
1699        } else {
1700            initializeSecondTime();
1701        }
1702    }
1703
1704    public void surfaceCreated(SurfaceHolder holder) {
1705    }
1706
1707    public void surfaceDestroyed(SurfaceHolder holder) {
1708        stopPreview();
1709        mSurfaceHolder = null;
1710    }
1711
1712    private void closeCamera() {
1713        if (mCameraDevice != null) {
1714            CameraHolder.instance().release();
1715            mCameraDevice.setZoomChangeListener(null);
1716            mCameraDevice = null;
1717            mPreviewing = false;
1718        }
1719    }
1720
1721    private void ensureCameraDevice() throws CameraHardwareException {
1722        if (mCameraDevice == null) {
1723            mCameraDevice = CameraHolder.instance().open(mCameraId);
1724            mInitialParams = mCameraDevice.getParameters();
1725        }
1726    }
1727
1728    private void showCameraErrorAndFinish() {
1729        Resources ress = getResources();
1730        Util.showFatalErrorAndFinish(Camera.this,
1731                ress.getString(R.string.camera_error_title),
1732                ress.getString(R.string.cannot_connect_camera));
1733    }
1734
1735    private boolean restartPreview() {
1736        try {
1737            startPreview();
1738        } catch (CameraHardwareException e) {
1739            showCameraErrorAndFinish();
1740            return false;
1741        }
1742        return true;
1743    }
1744
1745    private void setPreviewDisplay(SurfaceHolder holder) {
1746        try {
1747            mCameraDevice.setPreviewDisplay(holder);
1748        } catch (Throwable ex) {
1749            closeCamera();
1750            throw new RuntimeException("setPreviewDisplay failed", ex);
1751        }
1752    }
1753
1754    private void startPreview() throws CameraHardwareException {
1755        if (mPausing || isFinishing()) return;
1756
1757        ensureCameraDevice();
1758        mCameraDevice.setErrorCallback(mErrorCallback);
1759
1760        // If we're previewing already, stop the preview first (this will blank
1761        // the screen).
1762        if (mPreviewing) stopPreview();
1763
1764        setPreviewDisplay(mSurfaceHolder);
1765        mDisplayRotation = Util.getDisplayRotation(this);
1766        Util.setCameraDisplayOrientation(mDisplayRotation, mCameraId, mCameraDevice);
1767        setCameraParameters(UPDATE_PARAM_ALL);
1768
1769
1770        try {
1771            Log.v(TAG, "startPreview");
1772            mCameraDevice.startPreview();
1773        } catch (Throwable ex) {
1774            closeCamera();
1775            throw new RuntimeException("startPreview failed", ex);
1776        }
1777        mPreviewing = true;
1778        mZoomState = ZOOM_STOPPED;
1779        mStatus = IDLE;
1780    }
1781
1782    private void stopPreview() {
1783        if (mCameraDevice != null && mPreviewing) {
1784            Log.v(TAG, "stopPreview");
1785            mCameraDevice.stopPreview();
1786        }
1787        mPreviewing = false;
1788        // If auto focus was in progress, it would have been canceled.
1789        clearFocusState();
1790    }
1791
1792    private static boolean isSupported(String value, List<String> supported) {
1793        return supported == null ? false : supported.indexOf(value) >= 0;
1794    }
1795
1796    private void updateCameraParametersInitialize() {
1797        // Reset preview frame rate to the maximum because it may be lowered by
1798        // video camera application.
1799        List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates();
1800        if (frameRates != null) {
1801            Integer max = Collections.max(frameRates);
1802            mParameters.setPreviewFrameRate(max);
1803        }
1804
1805    }
1806
1807    private void updateCameraParametersZoom() {
1808        // Set zoom.
1809        if (mParameters.isZoomSupported()) {
1810            mParameters.setZoom(mZoomValue);
1811        }
1812    }
1813
1814    private void updateCameraParametersPreference() {
1815        // Set picture size.
1816        String pictureSize = mPreferences.getString(
1817                CameraSettings.KEY_PICTURE_SIZE, null);
1818        if (pictureSize == null) {
1819            CameraSettings.initialCameraPictureSize(this, mParameters);
1820        } else {
1821            List<Size> supported = mParameters.getSupportedPictureSizes();
1822            CameraSettings.setCameraPictureSize(
1823                    pictureSize, supported, mParameters);
1824        }
1825
1826        // Set the preview frame aspect ratio according to the picture size.
1827        Size size = mParameters.getPictureSize();
1828        PreviewFrameLayout frameLayout =
1829                (PreviewFrameLayout) findViewById(R.id.frame_layout);
1830        frameLayout.setAspectRatio((double) size.width / size.height);
1831
1832        // Set a preview size that is closest to the viewfinder height and has
1833        // the right aspect ratio.
1834        List<Size> sizes = mParameters.getSupportedPreviewSizes();
1835        Size optimalSize = Util.getOptimalPreviewSize(this,
1836                sizes, (double) size.width / size.height);
1837        Size original = mParameters.getPreviewSize();
1838        if (!original.equals(optimalSize)) {
1839            mParameters.setPreviewSize(optimalSize.width, optimalSize.height);
1840
1841            // Zoom related settings will be changed for different preview
1842            // sizes, so set and read the parameters to get lastest values
1843            mCameraDevice.setParameters(mParameters);
1844            mParameters = mCameraDevice.getParameters();
1845        }
1846        Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height);
1847
1848        // Since change scene mode may change supported values,
1849        // Set scene mode first,
1850        mSceneMode = mPreferences.getString(
1851                CameraSettings.KEY_SCENE_MODE,
1852                getString(R.string.pref_camera_scenemode_default));
1853        if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
1854            if (!mParameters.getSceneMode().equals(mSceneMode)) {
1855                mParameters.setSceneMode(mSceneMode);
1856                mCameraDevice.setParameters(mParameters);
1857
1858                // Setting scene mode will change the settings of flash mode,
1859                // white balance, and focus mode. Here we read back the
1860                // parameters, so we can know those settings.
1861                mParameters = mCameraDevice.getParameters();
1862            }
1863        } else {
1864            mSceneMode = mParameters.getSceneMode();
1865            if (mSceneMode == null) {
1866                mSceneMode = Parameters.SCENE_MODE_AUTO;
1867            }
1868        }
1869
1870        // Set JPEG quality.
1871        String jpegQuality = mPreferences.getString(
1872                CameraSettings.KEY_JPEG_QUALITY,
1873                getString(R.string.pref_camera_jpegquality_default));
1874        mParameters.setJpegQuality(JpegEncodingQualityMappings.getQualityNumber(jpegQuality));
1875
1876        // For the following settings, we need to check if the settings are
1877        // still supported by latest driver, if not, ignore the settings.
1878
1879        // Set color effect parameter.
1880        String colorEffect = mPreferences.getString(
1881                CameraSettings.KEY_COLOR_EFFECT,
1882                getString(R.string.pref_camera_coloreffect_default));
1883        if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) {
1884            mParameters.setColorEffect(colorEffect);
1885        }
1886
1887        // Set exposure compensation
1888        String exposure = mPreferences.getString(
1889                CameraSettings.KEY_EXPOSURE,
1890                getString(R.string.pref_exposure_default));
1891        try {
1892            int value = Integer.parseInt(exposure);
1893            int max = mParameters.getMaxExposureCompensation();
1894            int min = mParameters.getMinExposureCompensation();
1895            if (value >= min && value <= max) {
1896                mParameters.setExposureCompensation(value);
1897            } else {
1898                Log.w(TAG, "invalid exposure range: " + exposure);
1899            }
1900        } catch (NumberFormatException e) {
1901            Log.w(TAG, "invalid exposure: " + exposure);
1902        }
1903
1904        if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
1905            // Set flash mode.
1906            String flashMode = mPreferences.getString(
1907                    CameraSettings.KEY_FLASH_MODE,
1908                    getString(R.string.pref_camera_flashmode_default));
1909            List<String> supportedFlash = mParameters.getSupportedFlashModes();
1910            if (isSupported(flashMode, supportedFlash)) {
1911                mParameters.setFlashMode(flashMode);
1912            } else {
1913                flashMode = mParameters.getFlashMode();
1914                if (flashMode == null) {
1915                    flashMode = getString(
1916                            R.string.pref_camera_flashmode_no_flash);
1917                }
1918            }
1919
1920            // Set white balance parameter.
1921            String whiteBalance = mPreferences.getString(
1922                    CameraSettings.KEY_WHITE_BALANCE,
1923                    getString(R.string.pref_camera_whitebalance_default));
1924            if (isSupported(whiteBalance,
1925                    mParameters.getSupportedWhiteBalance())) {
1926                mParameters.setWhiteBalance(whiteBalance);
1927            } else {
1928                whiteBalance = mParameters.getWhiteBalance();
1929                if (whiteBalance == null) {
1930                    whiteBalance = Parameters.WHITE_BALANCE_AUTO;
1931                }
1932            }
1933
1934            // Set focus mode.
1935            mFocusMode = mPreferences.getString(
1936                    CameraSettings.KEY_FOCUS_MODE,
1937                    getString(R.string.pref_camera_focusmode_default));
1938            if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) {
1939                mParameters.setFocusMode(mFocusMode);
1940            } else {
1941                mFocusMode = mParameters.getFocusMode();
1942                if (mFocusMode == null) {
1943                    mFocusMode = Parameters.FOCUS_MODE_AUTO;
1944                }
1945            }
1946        } else {
1947            mFocusMode = mParameters.getFocusMode();
1948        }
1949    }
1950
1951    // We separate the parameters into several subsets, so we can update only
1952    // the subsets actually need updating. The PREFERENCE set needs extra
1953    // locking because the preference can be changed from GLThread as well.
1954    private void setCameraParameters(int updateSet) {
1955        mParameters = mCameraDevice.getParameters();
1956
1957        if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
1958            updateCameraParametersInitialize();
1959        }
1960
1961        if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
1962            updateCameraParametersZoom();
1963        }
1964
1965        if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
1966            updateCameraParametersPreference();
1967        }
1968
1969        mCameraDevice.setParameters(mParameters);
1970    }
1971
1972    // If the Camera is idle, update the parameters immediately, otherwise
1973    // accumulate them in mUpdateSet and update later.
1974    private void setCameraParametersWhenIdle(int additionalUpdateSet) {
1975        mUpdateSet |= additionalUpdateSet;
1976        if (mCameraDevice == null) {
1977            // We will update all the parameters when we open the device, so
1978            // we don't need to do anything now.
1979            mUpdateSet = 0;
1980            return;
1981        } else if (isCameraIdle()) {
1982            setCameraParameters(mUpdateSet);
1983            updateSceneModeUI();
1984            mUpdateSet = 0;
1985        } else {
1986            if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
1987                mHandler.sendEmptyMessageDelayed(
1988                        SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
1989            }
1990        }
1991    }
1992
1993    private void gotoGallery() {
1994        MenuHelper.gotoCameraImageGallery(this);
1995    }
1996
1997    private void viewImage(RotateImageView view) {
1998        if(!view.isUriValid()) {
1999            Log.e(TAG, "Uri invalid. uri=" + view.getUri());
2000            return;
2001        }
2002
2003        try {
2004            startActivity(new Intent(
2005                    Util.REVIEW_ACTION, view.getUri()));
2006        } catch (ActivityNotFoundException ex) {
2007            try {
2008                startActivity(new Intent(
2009                        Intent.ACTION_VIEW, view.getUri()));
2010            } catch (ActivityNotFoundException e) {
2011                Log.e(TAG, "review image fail. uri=" + view.getUri(), e);
2012            }
2013        }
2014    }
2015
2016    private void startReceivingLocationUpdates() {
2017        if (mLocationManager != null) {
2018            try {
2019                mLocationManager.requestLocationUpdates(
2020                        LocationManager.NETWORK_PROVIDER,
2021                        1000,
2022                        0F,
2023                        mLocationListeners[1]);
2024            } catch (java.lang.SecurityException ex) {
2025                Log.i(TAG, "fail to request location update, ignore", ex);
2026            } catch (IllegalArgumentException ex) {
2027                Log.d(TAG, "provider does not exist " + ex.getMessage());
2028            }
2029            try {
2030                mLocationManager.requestLocationUpdates(
2031                        LocationManager.GPS_PROVIDER,
2032                        1000,
2033                        0F,
2034                        mLocationListeners[0]);
2035                showGpsOnScreenIndicator(false);
2036            } catch (java.lang.SecurityException ex) {
2037                Log.i(TAG, "fail to request location update, ignore", ex);
2038            } catch (IllegalArgumentException ex) {
2039                Log.d(TAG, "provider does not exist " + ex.getMessage());
2040            }
2041            Log.d(TAG, "startReceivingLocationUpdates");
2042        }
2043    }
2044
2045    private void stopReceivingLocationUpdates() {
2046        if (mLocationManager != null) {
2047            for (int i = 0; i < mLocationListeners.length; i++) {
2048                try {
2049                    mLocationManager.removeUpdates(mLocationListeners[i]);
2050                } catch (Exception ex) {
2051                    Log.i(TAG, "fail to remove location listners, ignore", ex);
2052                }
2053            }
2054            Log.d(TAG, "stopReceivingLocationUpdates");
2055        }
2056        hideGpsOnScreenIndicator();
2057    }
2058
2059    private Location getCurrentLocation() {
2060        // go in best to worst order
2061        for (int i = 0; i < mLocationListeners.length; i++) {
2062            Location l = mLocationListeners[i].current();
2063            if (l != null) return l;
2064        }
2065        Log.d(TAG, "No location received yet.");
2066        return null;
2067    }
2068
2069    private boolean isCameraIdle() {
2070        return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED;
2071    }
2072
2073    private boolean isImageCaptureIntent() {
2074        String action = getIntent().getAction();
2075        return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
2076    }
2077
2078    private void setupCaptureParams() {
2079        Bundle myExtras = getIntent().getExtras();
2080        if (myExtras != null) {
2081            mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
2082            mCropValue = myExtras.getString("crop");
2083        }
2084    }
2085
2086    private void showPostCaptureAlert() {
2087        if (mIsImageCaptureIntent) {
2088            if (mIndicatorWheel == null) {
2089                mShutterButton.setVisibility(View.INVISIBLE);
2090            } else {
2091                mShutterButton.setEnabled(false);
2092            }
2093            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2094            for (int id : pickIds) {
2095                View button = findViewById(id);
2096                ((View) button.getParent()).setVisibility(View.VISIBLE);
2097            }
2098
2099            // Remove the text of the cancel button
2100            View view = findViewById(R.id.btn_cancel);
2101            if (view instanceof Button) ((Button) view).setText("");
2102        }
2103    }
2104
2105    private void hidePostCaptureAlert() {
2106        if (mIsImageCaptureIntent) {
2107            if (mIndicatorWheel == null) {
2108                mShutterButton.setVisibility(View.VISIBLE);
2109            } else {
2110                mShutterButton.setEnabled(true);
2111            }
2112            int[] pickIds = {R.id.btn_retake, R.id.btn_done};
2113            for (int id : pickIds) {
2114                View button = findViewById(id);
2115                ((View) button.getParent()).setVisibility(View.GONE);
2116            }
2117            enableCameraControls(true);
2118
2119            // Restore the text of the cancel button
2120            View view = findViewById(R.id.btn_cancel);
2121            if (view instanceof Button) {
2122                ((Button) view).setText(R.string.review_cancel);
2123            }
2124        }
2125    }
2126
2127    @Override
2128    public boolean onPrepareOptionsMenu(Menu menu) {
2129        super.onPrepareOptionsMenu(menu);
2130        // Only show the menu when camera is idle.
2131        for (int i = 0; i < menu.size(); i++) {
2132            menu.getItem(i).setVisible(isCameraIdle());
2133        }
2134
2135        return true;
2136    }
2137
2138    @Override
2139    public boolean onCreateOptionsMenu(Menu menu) {
2140        super.onCreateOptionsMenu(menu);
2141
2142        if (mIsImageCaptureIntent) {
2143            // No options menu for attach mode.
2144            return false;
2145        } else {
2146            addBaseMenuItems(menu);
2147        }
2148        return true;
2149    }
2150
2151    private void addBaseMenuItems(Menu menu) {
2152        MenuHelper.addSwitchModeMenuItem(menu, true, new Runnable() {
2153            public void run() {
2154                switchToVideoMode();
2155            }
2156        });
2157        MenuItem gallery = menu.add(Menu.NONE, Menu.NONE,
2158                MenuHelper.POSITION_GOTO_GALLERY,
2159                R.string.camera_gallery_photos_text)
2160                .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2161            public boolean onMenuItemClick(MenuItem item) {
2162                gotoGallery();
2163                return true;
2164            }
2165        });
2166        gallery.setIcon(android.R.drawable.ic_menu_gallery);
2167        mGalleryItems.add(gallery);
2168
2169        if (mNumberOfCameras > 1) {
2170            menu.add(Menu.NONE, Menu.NONE,
2171                    MenuHelper.POSITION_SWITCH_CAMERA_ID,
2172                    R.string.switch_camera_id)
2173                    .setOnMenuItemClickListener(new OnMenuItemClickListener() {
2174                public boolean onMenuItemClick(MenuItem item) {
2175                    CameraSettings.writePreferredCameraId(mPreferences,
2176                            ((mCameraId == mFrontCameraId)
2177                            ? mBackCameraId : mFrontCameraId));
2178                    onSharedPreferenceChanged();
2179                    return true;
2180                }
2181            }).setIcon(android.R.drawable.ic_menu_camera);
2182        }
2183    }
2184
2185    private void switchCameraId(int cameraId) {
2186        if (mPausing || !isCameraIdle()) return;
2187        mCameraId = cameraId;
2188
2189        stopPreview();
2190        closeCamera();
2191
2192        // Remove the messages in the event queue.
2193        mHandler.removeMessages(RESTART_PREVIEW);
2194
2195        // Reset variables
2196        mJpegPictureCallbackTime = 0;
2197        mZoomValue = 0;
2198
2199        // Reload the preferences.
2200        mPreferences.setLocalId(this, mCameraId);
2201        CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
2202
2203        // Restart the preview.
2204        resetExposureCompensation();
2205        if (!restartPreview()) return;
2206
2207        initializeZoom();
2208
2209        // Reload the UI.
2210        initializeHeadUpDisplay();
2211        initializeIndicatorWheel();
2212    }
2213
2214    private boolean switchToVideoMode() {
2215        if (isFinishing() || !isCameraIdle()) return false;
2216        MenuHelper.gotoVideoMode(Camera.this);
2217        mHandler.removeMessages(FIRST_TIME_INIT);
2218        finish();
2219        return true;
2220    }
2221
2222    public boolean onSwitchChanged(Switcher source, boolean onOff) {
2223        if (onOff == SWITCH_VIDEO) {
2224            return switchToVideoMode();
2225        } else {
2226            return true;
2227        }
2228    }
2229
2230    private void onSharedPreferenceChanged() {
2231        // ignore the events after "onPause()"
2232        if (mPausing) return;
2233
2234        boolean recordLocation;
2235
2236        recordLocation = RecordLocationPreference.get(
2237                mPreferences, getContentResolver());
2238
2239        if (mRecordLocation != recordLocation) {
2240            mRecordLocation = recordLocation;
2241            if (mRecordLocation) {
2242                startReceivingLocationUpdates();
2243            } else {
2244                stopReceivingLocationUpdates();
2245            }
2246        }
2247        int cameraId = CameraSettings.readPreferredCameraId(mPreferences);
2248        if (mCameraId != cameraId) {
2249            switchCameraId(cameraId);
2250        } else {
2251            setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
2252        }
2253    }
2254
2255    @Override
2256    public void onUserInteraction() {
2257        super.onUserInteraction();
2258        keepScreenOnAwhile();
2259    }
2260
2261    private void resetScreenOn() {
2262        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2263        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2264    }
2265
2266    private void keepScreenOnAwhile() {
2267        mHandler.removeMessages(CLEAR_SCREEN_DELAY);
2268        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
2269        mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
2270    }
2271
2272    private class MyHeadUpDisplayListener implements HeadUpDisplay.Listener {
2273
2274        public void onSharedPreferenceChanged() {
2275            Camera.this.onSharedPreferenceChanged();
2276        }
2277
2278        public void onRestorePreferencesClicked() {
2279            Camera.this.onRestorePreferencesClicked();
2280        }
2281
2282        public void onPopupWindowVisibilityChanged(int visibility) {
2283        }
2284    }
2285
2286    protected void onRestorePreferencesClicked() {
2287        if (mPausing) return;
2288        Runnable runnable = new Runnable() {
2289            public void run() {
2290                restorePreferences();
2291            }
2292        };
2293        MenuHelper.confirmAction(this,
2294                getString(R.string.confirm_restore_title),
2295                getString(R.string.confirm_restore_message),
2296                runnable);
2297    }
2298
2299    private void restorePreferences() {
2300        // Reset the zoom. Zoom value is not stored in preference.
2301        if (mParameters.isZoomSupported()) {
2302            mZoomValue = 0;
2303            setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
2304            if (mZoomPicker != null) mZoomPicker.setZoomIndex(0);
2305        }
2306
2307        if (mHeadUpDisplay != null) {
2308            mHeadUpDisplay.restorePreferences(mParameters);
2309        }
2310
2311        if (mIndicatorWheel != null) {
2312            mIndicatorWheel.dismissSettingPopup();
2313            CameraSettings.restorePreferences(Camera.this, mPreferences,
2314                    mParameters);
2315            initializeIndicatorWheel();
2316            onSharedPreferenceChanged();
2317        }
2318    }
2319
2320    protected void onOverriddenPreferencesClicked() {
2321        if (mPausing) return;
2322        if (mNotSelectableToast == null) {
2323            String str = getResources().getString(R.string.not_selectable_in_scene_mode);
2324            mNotSelectableToast = Toast.makeText(Camera.this, str, Toast.LENGTH_SHORT);
2325        }
2326        mNotSelectableToast.cancel();
2327        mNotSelectableToast.show();
2328    }
2329
2330    private class MyIndicatorWheelListener implements IndicatorWheel.Listener {
2331        public void onSharedPreferenceChanged() {
2332            Camera.this.onSharedPreferenceChanged();
2333        }
2334
2335        public void onRestorePreferencesClicked() {
2336            Camera.this.onRestorePreferencesClicked();
2337        }
2338
2339        public void onOverriddenPreferencesClicked() {
2340            Camera.this.onOverriddenPreferencesClicked();
2341        }
2342    }
2343
2344    private class MyCameraPickerListener implements CameraPicker.Listener {
2345        public void onSharedPreferenceChanged() {
2346            Camera.this.onSharedPreferenceChanged();
2347        }
2348    }
2349}
2350