Camera.java revision c343fa06491ee5677b735920032d92e055c16366
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.CameraPicker; 20import com.android.camera.ui.FaceView; 21import com.android.camera.ui.IndicatorControlContainer; 22import com.android.camera.ui.RotateImageView; 23import com.android.camera.ui.RotateLayout; 24import com.android.camera.ui.SharePopup; 25import com.android.camera.ui.ZoomControl; 26 27import android.app.Activity; 28import android.content.BroadcastReceiver; 29import android.content.ContentProviderClient; 30import android.content.ContentResolver; 31import android.content.Context; 32import android.content.Intent; 33import android.content.IntentFilter; 34import android.content.SharedPreferences.Editor; 35import android.graphics.Bitmap; 36import android.hardware.Camera.CameraInfo; 37import android.hardware.Camera.Face; 38import android.hardware.Camera.FaceDetectionListener; 39import android.hardware.Camera.Parameters; 40import android.hardware.Camera.PictureCallback; 41import android.hardware.Camera.Size; 42import android.location.Location; 43import android.media.CameraProfile; 44import android.net.Uri; 45import android.os.Bundle; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.MessageQueue; 50import android.os.SystemClock; 51import android.provider.MediaStore; 52import android.provider.Settings; 53import android.util.Log; 54import android.view.GestureDetector; 55import android.view.Gravity; 56import android.view.KeyEvent; 57import android.view.Menu; 58import android.view.MenuItem; 59import android.view.MenuItem.OnMenuItemClickListener; 60import android.view.MotionEvent; 61import android.view.OrientationEventListener; 62import android.view.SurfaceHolder; 63import android.view.SurfaceView; 64import android.view.View; 65import android.view.Window; 66import android.view.WindowManager; 67import android.view.animation.AnimationUtils; 68import android.widget.TextView; 69import android.widget.Toast; 70 71import java.io.File; 72import java.io.FileNotFoundException; 73import java.io.FileOutputStream; 74import java.io.IOException; 75import java.io.OutputStream; 76import java.util.ArrayList; 77import java.util.Collections; 78import java.util.Formatter; 79import java.util.List; 80 81/** The Camera activity which can preview and take pictures. */ 82public class Camera extends ActivityBase implements FocusManager.Listener, 83 View.OnTouchListener, ShutterButton.OnShutterButtonListener, 84 SurfaceHolder.Callback, ModePicker.OnModeChangeListener, 85 FaceDetectionListener, CameraPreference.OnPreferenceChangedListener, 86 LocationManager.Listener { 87 88 private static final String TAG = "camera"; 89 90 private static final String LAST_THUMB_FILENAME = "image_last_thumb"; 91 92 private static final int CROP_MSG = 1; 93 private static final int FIRST_TIME_INIT = 2; 94 private static final int RESTART_PREVIEW = 3; 95 private static final int CLEAR_SCREEN_DELAY = 4; 96 private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 5; 97 private static final int CHECK_DISPLAY_ROTATION = 6; 98 private static final int SHOW_TAP_TO_FOCUS_TOAST = 7; 99 private static final int DISMISS_TAP_TO_FOCUS_TOAST = 8; 100 101 // The subset of parameters we need to update in setCameraParameters(). 102 private static final int UPDATE_PARAM_INITIALIZE = 1; 103 private static final int UPDATE_PARAM_ZOOM = 2; 104 private static final int UPDATE_PARAM_PREFERENCE = 4; 105 private static final int UPDATE_PARAM_ALL = -1; 106 107 // When setCameraParametersWhenIdle() is called, we accumulate the subsets 108 // needed to be updated in mUpdateSet. 109 private int mUpdateSet; 110 111 // The brightness settings used when it is set to automatic in the system. 112 // The reason why it is set to 0.7 is just because 1.0 is too bright. 113 private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f; 114 115 private static final int SCREEN_DELAY = 2 * 60 * 1000; 116 117 private static final int ZOOM_STOPPED = 0; 118 private static final int ZOOM_START = 1; 119 private static final int ZOOM_STOPPING = 2; 120 121 private int mZoomState = ZOOM_STOPPED; 122 private boolean mSmoothZoomSupported = false; 123 private int mZoomValue; // The current zoom value. 124 private int mZoomMax; 125 private int mTargetZoomValue; 126 private ZoomControl mZoomControl; 127 128 private Parameters mParameters; 129 private Parameters mInitialParams; 130 private boolean mFocusAreaSupported; 131 private boolean mMeteringAreaSupported; 132 133 private MyOrientationEventListener mOrientationListener; 134 // The degrees of the device rotated clockwise from its natural orientation. 135 private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 136 // The orientation compensation for icons and thumbnails. Ex: if the value 137 // is 90, the UI components should be rotated 90 degrees counter-clockwise. 138 private int mOrientationCompensation = 0; 139 private ComboPreferences mPreferences; 140 141 private static final String sTempCropFilename = "crop-temp"; 142 143 private android.hardware.Camera mCameraDevice; 144 private ContentProviderClient mMediaProviderClient; 145 private SurfaceHolder mSurfaceHolder = null; 146 private ShutterButton mShutterButton; 147 private GestureDetector mPopupGestureDetector; 148 private boolean mOpenCameraFail = false; 149 private boolean mCameraDisabled = false; 150 151 private PreviewFrameLayout mPreviewFrameLayout; 152 private View mPreviewFrame; // Preview frame area. 153 private View mPreviewBorder; 154 155 // A popup window that contains a bigger thumbnail and a list of apps to share. 156 private SharePopup mSharePopup; 157 // The bitmap of the last captured picture thumbnail and the URI of the 158 // original picture. 159 private Thumbnail mThumbnail; 160 // An imageview showing showing the last captured picture thumbnail. 161 private RotateImageView mThumbnailView; 162 private ModePicker mModePicker; 163 private FaceView mFaceView; 164 private RotateLayout mFocusIndicator; 165 166 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 167 private String mCropValue; 168 private Uri mSaveUri; 169 170 // On-screen indicator 171 private View mGpsNoSignalIndicator; 172 private View mGpsHasSignalIndicator; 173 private TextView mExposureIndicator; 174 175 private final StringBuilder mBuilder = new StringBuilder(); 176 private final Formatter mFormatter = new Formatter(mBuilder); 177 private final Object[] mFormatterArgs = new Object[1]; 178 179 /** 180 * An unpublished intent flag requesting to return as soon as capturing 181 * is completed. 182 * 183 * TODO: consider publishing by moving into MediaStore. 184 */ 185 private final static String EXTRA_QUICK_CAPTURE = 186 "android.intent.extra.quickCapture"; 187 188 // The display rotation in degrees. This is only valid when mCameraState is 189 // not PREVIEW_STOPPED. 190 private int mDisplayRotation; 191 // The value for android.hardware.Camera.setDisplayOrientation. 192 private int mDisplayOrientation; 193 private boolean mPausing; 194 private boolean mFirstTimeInitialized; 195 private boolean mIsImageCaptureIntent; 196 private boolean mRecordLocation; 197 198 private static final int PREVIEW_STOPPED = 0; 199 private static final int IDLE = 1; // preview is active 200 // Focus is in progress. The exact focus state is in Focus.java. 201 private static final int FOCUSING = 2; 202 private static final int SNAPSHOT_IN_PROGRESS = 3; 203 private int mCameraState = PREVIEW_STOPPED; 204 205 private ContentResolver mContentResolver; 206 private boolean mDidRegister = false; 207 208 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 209 210 private LocationManager mLocationManager = null; 211 212 private final ShutterCallback mShutterCallback = new ShutterCallback(); 213 private final PostViewPictureCallback mPostViewPictureCallback = 214 new PostViewPictureCallback(); 215 private final RawPictureCallback mRawPictureCallback = 216 new RawPictureCallback(); 217 private final AutoFocusCallback mAutoFocusCallback = 218 new AutoFocusCallback(); 219 private final ZoomListener mZoomListener = new ZoomListener(); 220 private final CameraErrorCallback mErrorCallback = new CameraErrorCallback(); 221 222 private long mFocusStartTime; 223 private long mCaptureStartTime; 224 private long mShutterCallbackTime; 225 private long mPostViewPictureCallbackTime; 226 private long mRawPictureCallbackTime; 227 private long mJpegPictureCallbackTime; 228 private long mOnResumeTime; 229 private long mPicturesRemaining; 230 private byte[] mJpegImageData; 231 232 // These latency time are for the CameraLatency test. 233 public long mAutoFocusTime; 234 public long mShutterLag; 235 public long mShutterToPictureDisplayedTime; 236 public long mPictureDisplayedToJpegCallbackTime; 237 public long mJpegCallbackFinishTime; 238 239 // This handles everything about focus. 240 private FocusManager mFocusManager; 241 private String mSceneMode; 242 private Toast mNotSelectableToast; 243 private Toast mNoShareToast; 244 245 private final Handler mHandler = new MainHandler(); 246 private IndicatorControlContainer mIndicatorControlContainer; 247 private PreferenceGroup mPreferenceGroup; 248 249 // multiple cameras support 250 private int mNumberOfCameras; 251 private int mCameraId; 252 private int mFrontCameraId; 253 private int mBackCameraId; 254 255 private boolean mQuickCapture; 256 257 /** 258 * This Handler is used to post message back onto the main thread of the 259 * application 260 */ 261 private class MainHandler extends Handler { 262 @Override 263 public void handleMessage(Message msg) { 264 switch (msg.what) { 265 case RESTART_PREVIEW: { 266 startPreview(); 267 if (mJpegPictureCallbackTime != 0) { 268 long now = System.currentTimeMillis(); 269 mJpegCallbackFinishTime = now - mJpegPictureCallbackTime; 270 Log.v(TAG, "mJpegCallbackFinishTime = " 271 + mJpegCallbackFinishTime + "ms"); 272 mJpegPictureCallbackTime = 0; 273 } 274 break; 275 } 276 277 case CLEAR_SCREEN_DELAY: { 278 getWindow().clearFlags( 279 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 280 break; 281 } 282 283 case FIRST_TIME_INIT: { 284 initializeFirstTime(); 285 break; 286 } 287 288 case SET_CAMERA_PARAMETERS_WHEN_IDLE: { 289 setCameraParametersWhenIdle(0); 290 break; 291 } 292 293 case CHECK_DISPLAY_ROTATION: { 294 // Restart the preview if display rotation has changed. 295 // Sometimes this happens when the device is held upside 296 // down and camera app is opened. Rotation animation will 297 // take some time and the rotation value we have got may be 298 // wrong. Framework does not have a callback for this now. 299 if (Util.getDisplayRotation(Camera.this) != mDisplayRotation 300 && isCameraIdle()) { 301 startPreview(); 302 } 303 if (SystemClock.uptimeMillis() - mOnResumeTime < 5000) { 304 mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100); 305 } 306 break; 307 } 308 309 case SHOW_TAP_TO_FOCUS_TOAST: { 310 showTapToFocusToast(); 311 break; 312 } 313 314 case DISMISS_TAP_TO_FOCUS_TOAST: { 315 View v = findViewById(R.id.tap_to_focus_prompt); 316 v.setVisibility(View.GONE); 317 v.setAnimation(AnimationUtils.loadAnimation(Camera.this, 318 R.anim.on_screen_hint_exit)); 319 break; 320 } 321 } 322 } 323 } 324 325 private void resetExposureCompensation() { 326 String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE, 327 CameraSettings.EXPOSURE_DEFAULT_VALUE); 328 if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) { 329 Editor editor = mPreferences.edit(); 330 editor.putString(CameraSettings.KEY_EXPOSURE, "0"); 331 editor.apply(); 332 if (mIndicatorControlContainer != null) { 333 mIndicatorControlContainer.reloadPreferences(); 334 } 335 } 336 } 337 338 private void keepMediaProviderInstance() { 339 // We want to keep a reference to MediaProvider in camera's lifecycle. 340 // TODO: Utilize mMediaProviderClient instance to replace 341 // ContentResolver calls. 342 if (mMediaProviderClient == null) { 343 mMediaProviderClient = getContentResolver() 344 .acquireContentProviderClient(MediaStore.AUTHORITY); 345 } 346 } 347 348 // Snapshots can only be taken after this is called. It should be called 349 // once only. We could have done these things in onCreate() but we want to 350 // make preview screen appear as soon as possible. 351 private void initializeFirstTime() { 352 if (mFirstTimeInitialized) return; 353 354 // Create orientation listenter. This should be done first because it 355 // takes some time to get first orientation. 356 mOrientationListener = new MyOrientationEventListener(Camera.this); 357 mOrientationListener.enable(); 358 359 // Initialize location sevice. 360 mRecordLocation = RecordLocationPreference.get( 361 mPreferences, getContentResolver()); 362 initOnScreenIndicator(); 363 if (mRecordLocation) mLocationManager.startReceivingLocationUpdates(); 364 365 keepMediaProviderInstance(); 366 checkStorage(); 367 368 // Initialize last picture button. 369 mContentResolver = getContentResolver(); 370 if (!mIsImageCaptureIntent) { // no thumbnail in image capture intent 371 initThumbnailButton(); 372 } 373 374 // Initialize shutter button. 375 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 376 mShutterButton.setOnShutterButtonListener(this); 377 mShutterButton.setVisibility(View.VISIBLE); 378 379 // Initialize focus UI. 380 mPreviewFrame = findViewById(R.id.camera_preview); 381 mPreviewFrame.setOnTouchListener(this); 382 mPreviewBorder = findViewById(R.id.preview_border); 383 mFocusIndicator = (RotateLayout) findViewById(R.id.focus_indicator_rotate_layout); 384 mFocusManager.initialize(mFocusIndicator, mPreviewFrame, mFaceView, this); 385 mFocusManager.initializeToneGenerator(); 386 initializeScreenBrightness(); 387 installIntentFilter(); 388 initializeZoom(); 389 // Show the tap to focus toast if this is the first start. 390 if (mFocusAreaSupported && 391 mPreferences.getBoolean(CameraSettings.KEY_TAP_TO_FOCUS_PROMPT_SHOWN, true)) { 392 // Delay the toast for one second to wait for orientation. 393 mHandler.sendEmptyMessageDelayed(SHOW_TAP_TO_FOCUS_TOAST, 1000); 394 } 395 396 mFirstTimeInitialized = true; 397 addIdleHandler(); 398 } 399 400 private void addIdleHandler() { 401 MessageQueue queue = Looper.myQueue(); 402 queue.addIdleHandler(new MessageQueue.IdleHandler() { 403 public boolean queueIdle() { 404 Storage.ensureOSXCompatible(); 405 return false; 406 } 407 }); 408 } 409 410 private void initThumbnailButton() { 411 // Load the thumbnail from the disk. 412 mThumbnail = Thumbnail.loadFrom(new File(getFilesDir(), LAST_THUMB_FILENAME)); 413 updateThumbnailButton(); 414 } 415 416 private void updateThumbnailButton() { 417 // Update last image if URI is invalid and the storage is ready. 418 if ((mThumbnail == null || !Util.isUriValid(mThumbnail.getUri(), mContentResolver)) 419 && mPicturesRemaining >= 0) { 420 mThumbnail = Thumbnail.getLastImageThumbnail(mContentResolver); 421 } 422 if (mThumbnail != null) { 423 mThumbnailView.setBitmap(mThumbnail.getBitmap()); 424 } else { 425 mThumbnailView.setBitmap(null); 426 } 427 } 428 429 // If the activity is paused and resumed, this method will be called in 430 // onResume. 431 private void initializeSecondTime() { 432 // Start orientation listener as soon as possible because it takes 433 // some time to get first orientation. 434 mOrientationListener.enable(); 435 436 // Start location update if needed. 437 mRecordLocation = RecordLocationPreference.get( 438 mPreferences, getContentResolver()); 439 if (mRecordLocation) mLocationManager.startReceivingLocationUpdates(); 440 441 installIntentFilter(); 442 mFocusManager.initializeToneGenerator(); 443 initializeZoom(); 444 keepMediaProviderInstance(); 445 checkStorage(); 446 447 if (!mIsImageCaptureIntent) { 448 updateThumbnailButton(); 449 mModePicker.setCurrentMode(ModePicker.MODE_CAMERA); 450 } 451 } 452 453 private class ZoomChangeListener implements ZoomControl.OnZoomChangedListener { 454 // only for immediate zoom 455 @Override 456 public void onZoomValueChanged(int index) { 457 Camera.this.onZoomValueChanged(index); 458 } 459 460 // only for smooth zoom 461 @Override 462 public void onZoomStateChanged(int state) { 463 if (mPausing) return; 464 465 Log.v(TAG, "zoom picker state=" + state); 466 if (state == ZoomControl.ZOOM_IN) { 467 Camera.this.onZoomValueChanged(mZoomMax); 468 } else if (state == ZoomControl.ZOOM_OUT) { 469 Camera.this.onZoomValueChanged(0); 470 } else { 471 mTargetZoomValue = -1; 472 if (mZoomState == ZOOM_START) { 473 mZoomState = ZOOM_STOPPING; 474 mCameraDevice.stopSmoothZoom(); 475 } 476 } 477 } 478 } 479 480 private void initializeZoom() { 481 if (!mParameters.isZoomSupported()) return; 482 mZoomMax = mParameters.getMaxZoom(); 483 mSmoothZoomSupported = mParameters.isSmoothZoomSupported(); 484 mZoomControl.setZoomMax(mZoomMax); 485 mZoomControl.setZoomIndex(mParameters.getZoom()); 486 mZoomControl.setSmoothZoomSupported(mSmoothZoomSupported); 487 mZoomControl.setOnZoomChangeListener(new ZoomChangeListener()); 488 mCameraDevice.setZoomChangeListener(mZoomListener); 489 } 490 491 private void onZoomValueChanged(int index) { 492 // Not useful to change zoom value when the activity is paused. 493 if (mPausing) return; 494 495 if (mSmoothZoomSupported) { 496 if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) { 497 mTargetZoomValue = index; 498 if (mZoomState == ZOOM_START) { 499 mZoomState = ZOOM_STOPPING; 500 mCameraDevice.stopSmoothZoom(); 501 } 502 } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) { 503 mTargetZoomValue = index; 504 mCameraDevice.startSmoothZoom(index); 505 mZoomState = ZOOM_START; 506 } 507 } else { 508 mZoomValue = index; 509 setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM); 510 } 511 } 512 513 @Override 514 public void startFaceDetection() { 515 if (mParameters.getMaxNumDetectedFaces() > 0) { 516 mFaceView = (FaceView) findViewById(R.id.face_view); 517 mFaceView.clear(); 518 mFaceView.setVisibility(View.VISIBLE); 519 mFaceView.setDisplayOrientation(mDisplayOrientation); 520 CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId]; 521 mFaceView.setMirror(info.facing == CameraInfo.CAMERA_FACING_FRONT); 522 mFaceView.resume(); 523 mCameraDevice.setFaceDetectionListener(this); 524 mCameraDevice.startFaceDetection(); 525 } 526 } 527 528 @Override 529 public void stopFaceDetection() { 530 if (mParameters.getMaxNumDetectedFaces() > 0) { 531 mCameraDevice.setFaceDetectionListener(null); 532 mCameraDevice.stopFaceDetection(); 533 if (mFaceView != null) mFaceView.clear(); 534 } 535 } 536 537 private class PopupGestureListener 538 extends GestureDetector.SimpleOnGestureListener { 539 @Override 540 public boolean onDown(MotionEvent e) { 541 // Check if the popup window is visible. 542 View popup = mIndicatorControlContainer.getActiveSettingPopup(); 543 if (popup == null) return false; 544 545 546 // Let popup window, indicator control or preview frame handle the 547 // event by themselves. Dismiss the popup window if users touch on 548 // other areas. 549 if (!Util.pointInView(e.getX(), e.getY(), popup) 550 && !Util.pointInView(e.getX(), e.getY(), mIndicatorControlContainer) 551 && !Util.pointInView(e.getX(), e.getY(), mPreviewFrame)) { 552 mIndicatorControlContainer.dismissSettingPopup(); 553 // Let event fall through. 554 } 555 return false; 556 } 557 } 558 559 @Override 560 public boolean dispatchTouchEvent(MotionEvent m) { 561 // Check if the popup window should be dismissed first. 562 if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) { 563 return true; 564 } 565 566 return super.dispatchTouchEvent(m); 567 } 568 569 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 570 @Override 571 public void onReceive(Context context, Intent intent) { 572 String action = intent.getAction(); 573 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 574 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 575 || action.equals(Intent.ACTION_MEDIA_CHECKING)) { 576 checkStorage(); 577 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 578 checkStorage(); 579 if (!mIsImageCaptureIntent) { 580 updateThumbnailButton(); 581 } 582 } 583 } 584 }; 585 586 private void initOnScreenIndicator() { 587 mGpsNoSignalIndicator = findViewById(R.id.onscreen_gps_indicator_no_signal); 588 mGpsHasSignalIndicator = findViewById(R.id.onscreen_gps_indicator_on); 589 mExposureIndicator = (TextView) findViewById(R.id.onscreen_exposure_indicator); 590 } 591 592 @Override 593 public void showGpsOnScreenIndicator(boolean hasSignal) { 594 if (hasSignal) { 595 if (mGpsNoSignalIndicator != null) { 596 mGpsNoSignalIndicator.setVisibility(View.GONE); 597 } 598 if (mGpsHasSignalIndicator != null) { 599 mGpsHasSignalIndicator.setVisibility(View.VISIBLE); 600 } 601 } else { 602 if (mGpsNoSignalIndicator != null) { 603 mGpsNoSignalIndicator.setVisibility(View.VISIBLE); 604 } 605 if (mGpsHasSignalIndicator != null) { 606 mGpsHasSignalIndicator.setVisibility(View.GONE); 607 } 608 } 609 } 610 611 @Override 612 public void hideGpsOnScreenIndicator() { 613 if (mGpsNoSignalIndicator != null) mGpsNoSignalIndicator.setVisibility(View.GONE); 614 if (mGpsHasSignalIndicator != null) mGpsHasSignalIndicator.setVisibility(View.GONE); 615 } 616 617 private void updateExposureOnScreenIndicator(int value) { 618 if (mExposureIndicator == null) return; 619 620 if (value == 0) { 621 mExposureIndicator.setText(""); 622 mExposureIndicator.setVisibility(View.GONE); 623 } else { 624 float step = mParameters.getExposureCompensationStep(); 625 mFormatterArgs[0] = value * step; 626 mBuilder.delete(0, mBuilder.length()); 627 mFormatter.format("%+1.1f", mFormatterArgs); 628 String exposure = mFormatter.toString(); 629 mExposureIndicator.setText(exposure); 630 mExposureIndicator.setVisibility(View.VISIBLE); 631 } 632 } 633 634 private final class ShutterCallback 635 implements android.hardware.Camera.ShutterCallback { 636 public void onShutter() { 637 mShutterCallbackTime = System.currentTimeMillis(); 638 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 639 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 640 mFocusManager.onShutter(); 641 } 642 } 643 644 private final class PostViewPictureCallback implements PictureCallback { 645 public void onPictureTaken( 646 byte [] data, android.hardware.Camera camera) { 647 mPostViewPictureCallbackTime = System.currentTimeMillis(); 648 Log.v(TAG, "mShutterToPostViewCallbackTime = " 649 + (mPostViewPictureCallbackTime - mShutterCallbackTime) 650 + "ms"); 651 } 652 } 653 654 private final class RawPictureCallback implements PictureCallback { 655 public void onPictureTaken( 656 byte [] rawData, android.hardware.Camera camera) { 657 mRawPictureCallbackTime = System.currentTimeMillis(); 658 Log.v(TAG, "mShutterToRawCallbackTime = " 659 + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms"); 660 } 661 } 662 663 private final class JpegPictureCallback implements PictureCallback { 664 Location mLocation; 665 666 public JpegPictureCallback(Location loc) { 667 mLocation = loc; 668 } 669 670 public void onPictureTaken( 671 final byte [] jpegData, final android.hardware.Camera camera) { 672 if (mPausing) { 673 return; 674 } 675 676 mJpegPictureCallbackTime = System.currentTimeMillis(); 677 // If postview callback has arrived, the captured image is displayed 678 // in postview callback. If not, the captured image is displayed in 679 // raw picture callback. 680 if (mPostViewPictureCallbackTime != 0) { 681 mShutterToPictureDisplayedTime = 682 mPostViewPictureCallbackTime - mShutterCallbackTime; 683 mPictureDisplayedToJpegCallbackTime = 684 mJpegPictureCallbackTime - mPostViewPictureCallbackTime; 685 } else { 686 mShutterToPictureDisplayedTime = 687 mRawPictureCallbackTime - mShutterCallbackTime; 688 mPictureDisplayedToJpegCallbackTime = 689 mJpegPictureCallbackTime - mRawPictureCallbackTime; 690 } 691 Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = " 692 + mPictureDisplayedToJpegCallbackTime + "ms"); 693 694 if (!mIsImageCaptureIntent) { 695 enableCameraControls(true); 696 697 // We want to show the taken picture for a while, so we wait 698 // for at least 0.5 second before restarting the preview. 699 long delay = 500 - mPictureDisplayedToJpegCallbackTime; 700 if (delay < 0) { 701 startPreview(); 702 } else { 703 mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay); 704 } 705 } 706 707 if (!mIsImageCaptureIntent) { 708 storeImage(jpegData, mLocation); 709 } else { 710 mJpegImageData = jpegData; 711 if (!mQuickCapture) { 712 showPostCaptureAlert(); 713 } else { 714 doAttach(); 715 } 716 } 717 718 // Check this in advance of each shot so we don't add to shutter 719 // latency. It's true that someone else could write to the SD card in 720 // the mean time and fill it, but that could have happened between the 721 // shutter press and saving the JPEG too. 722 checkStorage(); 723 724 if (!mHandler.hasMessages(RESTART_PREVIEW)) { 725 long now = System.currentTimeMillis(); 726 mJpegCallbackFinishTime = now - mJpegPictureCallbackTime; 727 Log.v(TAG, "mJpegCallbackFinishTime = " 728 + mJpegCallbackFinishTime + "ms"); 729 mJpegPictureCallbackTime = 0; 730 } 731 } 732 } 733 734 private final class AutoFocusCallback 735 implements android.hardware.Camera.AutoFocusCallback { 736 public void onAutoFocus( 737 boolean focused, android.hardware.Camera camera) { 738 if (mPausing) return; 739 740 mAutoFocusTime = System.currentTimeMillis() - mFocusStartTime; 741 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 742 mFocusManager.onAutoFocus(focused); 743 // If focus completes and the snapshot is not started, enable the 744 // controls. 745 if (mFocusManager.isFocusCompleted()) { 746 enableCameraControls(true); 747 } 748 } 749 } 750 751 private final class ZoomListener 752 implements android.hardware.Camera.OnZoomChangeListener { 753 @Override 754 public void onZoomChange( 755 int value, boolean stopped, android.hardware.Camera camera) { 756 Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped); 757 mZoomValue = value; 758 759 // Update the UI when we get zoom value. 760 mZoomControl.setZoomIndex(value); 761 762 // Keep mParameters up to date. We do not getParameter again in 763 // takePicture. If we do not do this, wrong zoom value will be set. 764 mParameters.setZoom(value); 765 766 if (stopped && mZoomState != ZOOM_STOPPED) { 767 if (mTargetZoomValue != -1 && value != mTargetZoomValue) { 768 mCameraDevice.startSmoothZoom(mTargetZoomValue); 769 mZoomState = ZOOM_START; 770 } else { 771 mZoomState = ZOOM_STOPPED; 772 } 773 } 774 } 775 } 776 777 private void storeImage(final byte[] data, Location loc) { 778 long dateTaken = System.currentTimeMillis(); 779 String title = Util.createJpegName(dateTaken); 780 int orientation = Exif.getOrientation(data); 781 Uri uri = Storage.addImage(mContentResolver, title, dateTaken, 782 loc, orientation, data); 783 if (uri != null) { 784 // Create a thumbnail whose width is equal or bigger than that of the preview. 785 int ratio = (int) Math.ceil((double) mParameters.getPictureSize().width 786 / mPreviewFrameLayout.getWidth()); 787 int inSampleSize = Integer.highestOneBit(ratio); 788 mThumbnail = Thumbnail.createThumbnail(data, orientation, inSampleSize, uri); 789 if (mThumbnail != null) { 790 mThumbnailView.setBitmap(mThumbnail.getBitmap()); 791 } 792 Util.broadcastNewPicture(this, uri); 793 } 794 } 795 796 @Override 797 public boolean capture() { 798 // If we are already in the middle of taking a snapshot then ignore. 799 if (mCameraState == SNAPSHOT_IN_PROGRESS || mCameraDevice == null) { 800 return false; 801 } 802 mCaptureStartTime = System.currentTimeMillis(); 803 mPostViewPictureCallbackTime = 0; 804 enableCameraControls(false); 805 mJpegImageData = null; 806 807 // See android.hardware.Camera.Parameters.setRotation for 808 // documentation. 809 int rotation = 0; 810 if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 811 CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId]; 812 if (info.facing == CameraInfo.CAMERA_FACING_FRONT) { 813 rotation = (info.orientation - mOrientation + 360) % 360; 814 } else { // back-facing camera 815 rotation = (info.orientation + mOrientation) % 360; 816 } 817 } 818 mParameters.setRotation(rotation); 819 820 // Clear previous GPS location from the parameters. 821 mParameters.removeGpsData(); 822 823 // We always encode GpsTimeStamp 824 mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000); 825 826 // Set GPS location. 827 Location loc = mRecordLocation ? mLocationManager.getCurrentLocation() : null; 828 if (loc != null) { 829 double lat = loc.getLatitude(); 830 double lon = loc.getLongitude(); 831 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 832 833 if (hasLatLon) { 834 Log.d(TAG, "Set gps location"); 835 mParameters.setGpsLatitude(lat); 836 mParameters.setGpsLongitude(lon); 837 mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase()); 838 if (loc.hasAltitude()) { 839 mParameters.setGpsAltitude(loc.getAltitude()); 840 } else { 841 // for NETWORK_PROVIDER location provider, we may have 842 // no altitude information, but the driver needs it, so 843 // we fake one. 844 mParameters.setGpsAltitude(0); 845 } 846 if (loc.getTime() != 0) { 847 // Location.getTime() is UTC in milliseconds. 848 // gps-timestamp is UTC in seconds. 849 long utcTimeSeconds = loc.getTime() / 1000; 850 mParameters.setGpsTimestamp(utcTimeSeconds); 851 } 852 } else { 853 loc = null; 854 } 855 } 856 857 mCameraDevice.setParameters(mParameters); 858 859 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 860 mPostViewPictureCallback, new JpegPictureCallback(loc)); 861 mCameraState = SNAPSHOT_IN_PROGRESS; 862 return true; 863 } 864 865 @Override 866 public void setFocusParameters() { 867 setCameraParameters(UPDATE_PARAM_PREFERENCE); 868 } 869 870 private boolean saveDataToFile(String filePath, byte[] data) { 871 FileOutputStream f = null; 872 try { 873 f = new FileOutputStream(filePath); 874 f.write(data); 875 } catch (IOException e) { 876 return false; 877 } finally { 878 Util.closeSilently(f); 879 } 880 return true; 881 } 882 883 @Override 884 public void onCreate(Bundle icicle) { 885 super.onCreate(icicle); 886 887 mIsImageCaptureIntent = isImageCaptureIntent(); 888 setContentView(R.layout.camera); 889 if (mIsImageCaptureIntent) { 890 findViewById(R.id.btn_cancel).setVisibility(View.VISIBLE); 891 } else { 892 mThumbnailView = (RotateImageView) findViewById(R.id.thumbnail); 893 mThumbnailView.setVisibility(View.VISIBLE); 894 } 895 896 mPreferences = new ComboPreferences(this); 897 CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal()); 898 mFocusManager = new FocusManager(mPreferences, 899 getString(R.string.pref_camera_focusmode_default)); 900 901 mCameraId = CameraSettings.readPreferredCameraId(mPreferences); 902 903 // Testing purpose. Launch a specific camera through the intent extras. 904 int intentCameraId = Util.getCameraFacingIntentExtras(this); 905 if (intentCameraId != -1) { 906 mCameraId = intentCameraId; 907 } 908 909 mPreferences.setLocalId(this, mCameraId); 910 CameraSettings.upgradeLocalPreferences(mPreferences.getLocal()); 911 912 mNumberOfCameras = CameraHolder.instance().getNumberOfCameras(); 913 mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false); 914 915 // we need to reset exposure for the preview 916 resetExposureCompensation(); 917 918 /* 919 * To reduce startup time, we start the preview in another thread. 920 * We make sure the preview is started at the end of onCreate. 921 */ 922 Thread startPreviewThread = new Thread(new Runnable() { 923 public void run() { 924 try { 925 mCameraDevice = Util.openCamera(Camera.this, mCameraId); 926 initializeCapabilities(); 927 startPreview(); 928 } catch (CameraHardwareException e) { 929 mOpenCameraFail = true; 930 } catch (CameraDisabledException e) { 931 mCameraDisabled = true; 932 } 933 } 934 }); 935 startPreviewThread.start(); 936 937 // don't set mSurfaceHolder here. We have it set ONLY within 938 // surfaceChanged / surfaceDestroyed, other parts of the code 939 // assume that when it is set, the surface is also set. 940 SurfaceView preview = (SurfaceView) findViewById(R.id.camera_preview); 941 SurfaceHolder holder = preview.getHolder(); 942 holder.addCallback(this); 943 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 944 945 if (mIsImageCaptureIntent) { 946 setupCaptureParams(); 947 } else { 948 mModePicker = (ModePicker) findViewById(R.id.mode_picker); 949 mModePicker.setVisibility(View.VISIBLE); 950 mModePicker.setOnModeChangeListener(this); 951 mModePicker.setCurrentMode(ModePicker.MODE_CAMERA); 952 } 953 954 mZoomControl = (ZoomControl) findViewById(R.id.zoom_control); 955 mLocationManager = new LocationManager(this, this); 956 957 // Make sure preview is started. 958 try { 959 startPreviewThread.join(); 960 if (mOpenCameraFail) { 961 Util.showErrorAndFinish(this, R.string.cannot_connect_camera); 962 return; 963 } else if (mCameraDisabled) { 964 Util.showErrorAndFinish(this, R.string.camera_disabled); 965 return; 966 } 967 } catch (InterruptedException ex) { 968 // ignore 969 } 970 971 mBackCameraId = CameraHolder.instance().getBackCameraId(); 972 mFrontCameraId = CameraHolder.instance().getFrontCameraId(); 973 974 // Do this after starting preview because it depends on camera 975 // parameters. 976 initializeIndicatorControl(); 977 } 978 979 private void overrideCameraSettings(final String flashMode, 980 final String whiteBalance, final String focusMode) { 981 if (mIndicatorControlContainer != null) { 982 mIndicatorControlContainer.overrideSettings( 983 CameraSettings.KEY_FLASH_MODE, flashMode, 984 CameraSettings.KEY_WHITE_BALANCE, whiteBalance, 985 CameraSettings.KEY_FOCUS_MODE, focusMode); 986 } 987 } 988 989 private void updateSceneModeUI() { 990 // If scene mode is set, we cannot set flash mode, white balance, and 991 // focus mode, instead, we read it from driver 992 if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) { 993 overrideCameraSettings(mParameters.getFlashMode(), 994 mParameters.getWhiteBalance(), mParameters.getFocusMode()); 995 } else { 996 overrideCameraSettings(null, null, null); 997 } 998 } 999 1000 private void loadCameraPreferences() { 1001 CameraSettings settings = new CameraSettings(this, mInitialParams, 1002 mCameraId, CameraHolder.instance().getCameraInfo()); 1003 mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences); 1004 } 1005 1006 private void initializeIndicatorControl() { 1007 // setting the indicator buttons. 1008 mIndicatorControlContainer = 1009 (IndicatorControlContainer) findViewById(R.id.indicator_control); 1010 if (mIndicatorControlContainer == null) return; 1011 loadCameraPreferences(); 1012 final String[] SETTING_KEYS = { 1013 CameraSettings.KEY_WHITE_BALANCE, 1014 CameraSettings.KEY_SCENE_MODE}; 1015 final String[] OTHER_SETTING_KEYS = { 1016 CameraSettings.KEY_RECORD_LOCATION, 1017 CameraSettings.KEY_FOCUS_MODE, 1018 CameraSettings.KEY_EXPOSURE, 1019 CameraSettings.KEY_PICTURE_SIZE}; 1020 1021 CameraPicker.setImageResourceId(R.drawable.ic_switch_photo_facing_holo_light); 1022 mIndicatorControlContainer.initialize(this, mPreferenceGroup, 1023 CameraSettings.KEY_FLASH_MODE, mParameters.isZoomSupported(), 1024 SETTING_KEYS, OTHER_SETTING_KEYS); 1025 mIndicatorControlContainer.setListener(this); 1026 } 1027 1028 private boolean collapseCameraControls() { 1029 if ((mIndicatorControlContainer != null) 1030 && mIndicatorControlContainer.dismissSettingPopup()) { 1031 return true; 1032 } 1033 return false; 1034 } 1035 1036 private void enableCameraControls(boolean enable) { 1037 if (mIndicatorControlContainer != null) { 1038 mIndicatorControlContainer.setEnabled(enable); 1039 } 1040 if (mModePicker != null) mModePicker.setEnabled(enable); 1041 if (mZoomControl != null) mZoomControl.setEnabled(enable); 1042 } 1043 1044 public static int roundOrientation(int orientation) { 1045 return ((orientation + 45) / 90 * 90) % 360; 1046 } 1047 1048 private class MyOrientationEventListener 1049 extends OrientationEventListener { 1050 public MyOrientationEventListener(Context context) { 1051 super(context); 1052 } 1053 1054 @Override 1055 public void onOrientationChanged(int orientation) { 1056 // We keep the last known orientation. So if the user first orient 1057 // the camera then point the camera to floor or sky, we still have 1058 // the correct orientation. 1059 if (orientation == ORIENTATION_UNKNOWN) return; 1060 mOrientation = roundOrientation(orientation); 1061 // When the screen is unlocked, display rotation may change. Always 1062 // calculate the up-to-date orientationCompensation. 1063 int orientationCompensation = mOrientation 1064 + Util.getDisplayRotation(Camera.this); 1065 if (mOrientationCompensation != orientationCompensation) { 1066 mOrientationCompensation = orientationCompensation; 1067 setOrientationIndicator(mOrientationCompensation); 1068 } 1069 1070 // Show the toast after getting the first orientation changed. 1071 if (mHandler.hasMessages(SHOW_TAP_TO_FOCUS_TOAST)) { 1072 mHandler.removeMessages(SHOW_TAP_TO_FOCUS_TOAST); 1073 showTapToFocusToast(); 1074 } 1075 } 1076 } 1077 1078 private void setOrientationIndicator(int degree) { 1079 if (mThumbnailView != null) mThumbnailView.setDegree(degree); 1080 if (mModePicker != null) mModePicker.setDegree(degree); 1081 if (mSharePopup != null) mSharePopup.setOrientation(degree); 1082 if (mIndicatorControlContainer != null) mIndicatorControlContainer.setDegree(degree); 1083 if (mZoomControl != null) mZoomControl.setDegree(degree); 1084 if (mFocusIndicator != null) mFocusIndicator.setOrientation(degree); 1085 if (mFaceView != null) mFaceView.setOrientation(degree); 1086 } 1087 1088 @Override 1089 public void onStop() { 1090 super.onStop(); 1091 if (mMediaProviderClient != null) { 1092 mMediaProviderClient.release(); 1093 mMediaProviderClient = null; 1094 } 1095 } 1096 1097 private void checkStorage() { 1098 mPicturesRemaining = Storage.getAvailableSpace(); 1099 if (mPicturesRemaining > 0) { 1100 mPicturesRemaining /= 1500000; 1101 } 1102 updateStorageHint(); 1103 } 1104 1105 @OnClickAttr 1106 public void onThumbnailClicked(View v) { 1107 if (isCameraIdle() && mThumbnail != null) { 1108 showSharePopup(); 1109 } 1110 } 1111 1112 @OnClickAttr 1113 public void onRetakeButtonClicked(View v) { 1114 hidePostCaptureAlert(); 1115 startPreview(); 1116 } 1117 1118 @OnClickAttr 1119 public void onDoneButtonClicked(View v) { 1120 doAttach(); 1121 } 1122 1123 @OnClickAttr 1124 public void onCancelButtonClicked(View v) { 1125 doCancel(); 1126 } 1127 1128 private void doAttach() { 1129 if (mPausing) { 1130 return; 1131 } 1132 1133 byte[] data = mJpegImageData; 1134 1135 if (mCropValue == null) { 1136 // First handle the no crop case -- just return the value. If the 1137 // caller specifies a "save uri" then write the data to it's 1138 // stream. Otherwise, pass back a scaled down version of the bitmap 1139 // directly in the extras. 1140 if (mSaveUri != null) { 1141 OutputStream outputStream = null; 1142 try { 1143 outputStream = mContentResolver.openOutputStream(mSaveUri); 1144 outputStream.write(data); 1145 outputStream.close(); 1146 1147 setResultEx(RESULT_OK); 1148 finish(); 1149 } catch (IOException ex) { 1150 // ignore exception 1151 } finally { 1152 Util.closeSilently(outputStream); 1153 } 1154 } else { 1155 int orientation = Exif.getOrientation(data); 1156 Bitmap bitmap = Util.makeBitmap(data, 50 * 1024); 1157 bitmap = Util.rotate(bitmap, orientation); 1158 setResultEx(RESULT_OK, 1159 new Intent("inline-data").putExtra("data", bitmap)); 1160 finish(); 1161 } 1162 } else { 1163 // Save the image to a temp file and invoke the cropper 1164 Uri tempUri = null; 1165 FileOutputStream tempStream = null; 1166 try { 1167 File path = getFileStreamPath(sTempCropFilename); 1168 path.delete(); 1169 tempStream = openFileOutput(sTempCropFilename, 0); 1170 tempStream.write(data); 1171 tempStream.close(); 1172 tempUri = Uri.fromFile(path); 1173 } catch (FileNotFoundException ex) { 1174 setResultEx(Activity.RESULT_CANCELED); 1175 finish(); 1176 return; 1177 } catch (IOException ex) { 1178 setResultEx(Activity.RESULT_CANCELED); 1179 finish(); 1180 return; 1181 } finally { 1182 Util.closeSilently(tempStream); 1183 } 1184 1185 Bundle newExtras = new Bundle(); 1186 if (mCropValue.equals("circle")) { 1187 newExtras.putString("circleCrop", "true"); 1188 } 1189 if (mSaveUri != null) { 1190 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 1191 } else { 1192 newExtras.putBoolean("return-data", true); 1193 } 1194 1195 Intent cropIntent = new Intent("com.android.camera.action.CROP"); 1196 1197 cropIntent.setData(tempUri); 1198 cropIntent.putExtras(newExtras); 1199 1200 startActivityForResult(cropIntent, CROP_MSG); 1201 } 1202 } 1203 1204 private void doCancel() { 1205 setResultEx(RESULT_CANCELED, new Intent()); 1206 finish(); 1207 } 1208 1209 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1210 switch (button.getId()) { 1211 case R.id.shutter_button: 1212 doFocus(pressed); 1213 break; 1214 } 1215 } 1216 1217 public void onShutterButtonClick(ShutterButton button) { 1218 switch (button.getId()) { 1219 case R.id.shutter_button: 1220 doSnap(); 1221 break; 1222 } 1223 } 1224 1225 private OnScreenHint mStorageHint; 1226 1227 private void updateStorageHint() { 1228 String noStorageText = null; 1229 1230 if (mPicturesRemaining == Storage.UNAVAILABLE) { 1231 noStorageText = getString(R.string.no_storage); 1232 } else if (mPicturesRemaining == Storage.PREPARING) { 1233 noStorageText = getString(R.string.preparing_sd); 1234 } else if (mPicturesRemaining == Storage.UNKNOWN_SIZE) { 1235 noStorageText = getString(R.string.access_sd_fail); 1236 } else if (mPicturesRemaining < 1L) { 1237 noStorageText = getString(R.string.not_enough_space); 1238 } 1239 1240 if (noStorageText != null) { 1241 if (mStorageHint == null) { 1242 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1243 } else { 1244 mStorageHint.setText(noStorageText); 1245 } 1246 mStorageHint.show(); 1247 } else if (mStorageHint != null) { 1248 mStorageHint.cancel(); 1249 mStorageHint = null; 1250 } 1251 } 1252 1253 private void installIntentFilter() { 1254 // install an intent filter to receive SD card related events. 1255 IntentFilter intentFilter = 1256 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1257 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1258 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1259 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1260 intentFilter.addDataScheme("file"); 1261 registerReceiver(mReceiver, intentFilter); 1262 mDidRegister = true; 1263 } 1264 1265 private void initializeScreenBrightness() { 1266 Window win = getWindow(); 1267 // Overright the brightness settings if it is automatic 1268 int mode = Settings.System.getInt( 1269 getContentResolver(), 1270 Settings.System.SCREEN_BRIGHTNESS_MODE, 1271 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); 1272 if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) { 1273 WindowManager.LayoutParams winParams = win.getAttributes(); 1274 winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS; 1275 win.setAttributes(winParams); 1276 } 1277 } 1278 1279 @Override 1280 protected void onResume() { 1281 super.onResume(); 1282 mPausing = false; 1283 if (mOpenCameraFail || mCameraDisabled) return; 1284 1285 mJpegPictureCallbackTime = 0; 1286 mZoomValue = 0; 1287 1288 // Start the preview if it is not started. 1289 if (mCameraState == PREVIEW_STOPPED) { 1290 try { 1291 mCameraDevice = Util.openCamera(this, mCameraId); 1292 initializeCapabilities(); 1293 resetExposureCompensation(); 1294 startPreview(); 1295 } catch(CameraHardwareException e) { 1296 Util.showErrorAndFinish(this, R.string.cannot_connect_camera); 1297 return; 1298 } catch(CameraDisabledException e) { 1299 Util.showErrorAndFinish(this, R.string.camera_disabled); 1300 return; 1301 } 1302 } 1303 1304 if (mSurfaceHolder != null) { 1305 // If first time initialization is not finished, put it in the 1306 // message queue. 1307 if (!mFirstTimeInitialized) { 1308 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1309 } else { 1310 initializeSecondTime(); 1311 } 1312 } 1313 keepScreenOnAwhile(); 1314 1315 if (mCameraState == IDLE) { 1316 mOnResumeTime = SystemClock.uptimeMillis(); 1317 mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100); 1318 } 1319 } 1320 1321 @Override 1322 protected void onPause() { 1323 mPausing = true; 1324 stopPreview(); 1325 // Close the camera now because other activities may need to use it. 1326 closeCamera(); 1327 resetScreenOn(); 1328 1329 // Clear UI. 1330 collapseCameraControls(); 1331 if (mSharePopup != null) mSharePopup.dismiss(); 1332 if (mFaceView != null) mFaceView.clear(); 1333 1334 if (mFirstTimeInitialized) { 1335 mOrientationListener.disable(); 1336 if (!mIsImageCaptureIntent) { 1337 if (mThumbnail != null) { 1338 mThumbnail.saveTo(new File(getFilesDir(), LAST_THUMB_FILENAME)); 1339 } 1340 } 1341 hidePostCaptureAlert(); 1342 } 1343 1344 if (mDidRegister) { 1345 unregisterReceiver(mReceiver); 1346 mDidRegister = false; 1347 } 1348 mLocationManager.stopReceivingLocationUpdates(); 1349 updateExposureOnScreenIndicator(0); 1350 1351 mFocusManager.releaseToneGenerator(); 1352 1353 if (mStorageHint != null) { 1354 mStorageHint.cancel(); 1355 mStorageHint = null; 1356 } 1357 1358 // If we are in an image capture intent and has taken 1359 // a picture, we just clear it in onPause. 1360 mJpegImageData = null; 1361 1362 // Remove the messages in the event queue. 1363 mHandler.removeMessages(RESTART_PREVIEW); 1364 mHandler.removeMessages(FIRST_TIME_INIT); 1365 mHandler.removeMessages(CHECK_DISPLAY_ROTATION); 1366 mFocusManager.removeMessages(); 1367 1368 super.onPause(); 1369 } 1370 1371 @Override 1372 protected void onActivityResult( 1373 int requestCode, int resultCode, Intent data) { 1374 switch (requestCode) { 1375 case CROP_MSG: { 1376 Intent intent = new Intent(); 1377 if (data != null) { 1378 Bundle extras = data.getExtras(); 1379 if (extras != null) { 1380 intent.putExtras(extras); 1381 } 1382 } 1383 setResultEx(resultCode, intent); 1384 finish(); 1385 1386 File path = getFileStreamPath(sTempCropFilename); 1387 path.delete(); 1388 1389 break; 1390 } 1391 } 1392 } 1393 1394 private boolean canTakePicture() { 1395 return isCameraIdle() && (mPicturesRemaining > 0); 1396 } 1397 1398 @Override 1399 public void autoFocus() { 1400 mFocusStartTime = System.currentTimeMillis(); 1401 mCameraDevice.autoFocus(mAutoFocusCallback); 1402 mCameraState = FOCUSING; 1403 enableCameraControls(false); 1404 } 1405 1406 @Override 1407 public void cancelAutoFocus() { 1408 mCameraDevice.cancelAutoFocus(); 1409 mCameraState = IDLE; 1410 enableCameraControls(true); 1411 setCameraParameters(UPDATE_PARAM_PREFERENCE); 1412 } 1413 1414 // Preview area is touched. Handle touch focus. 1415 @Override 1416 public boolean onTouch(View v, MotionEvent e) { 1417 if (mPausing || !mFirstTimeInitialized || mCameraState == SNAPSHOT_IN_PROGRESS) { 1418 return false; 1419 } 1420 1421 // Do not trigger touch focus if popup window is opened. 1422 if (collapseCameraControls()) return false; 1423 1424 // Check if metering area or focus area is supported. 1425 if (!mFocusAreaSupported && !mMeteringAreaSupported) return false; 1426 1427 return mFocusManager.onTouch(e); 1428 } 1429 1430 @Override 1431 public void onBackPressed() { 1432 if (!isCameraIdle()) { 1433 // ignore backs while we're taking a picture 1434 return; 1435 } else if (!collapseCameraControls()) { 1436 super.onBackPressed(); 1437 } 1438 } 1439 1440 @Override 1441 public boolean onKeyDown(int keyCode, KeyEvent event) { 1442 switch (keyCode) { 1443 case KeyEvent.KEYCODE_FOCUS: 1444 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1445 doFocus(true); 1446 } 1447 return true; 1448 case KeyEvent.KEYCODE_CAMERA: 1449 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1450 doSnap(); 1451 } 1452 return true; 1453 case KeyEvent.KEYCODE_DPAD_CENTER: 1454 // If we get a dpad center event without any focused view, move 1455 // the focus to the shutter button and press it. 1456 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1457 // Start auto-focus immediately to reduce shutter lag. After 1458 // the shutter button gets the focus, doFocus() will be 1459 // called again but it is fine. 1460 if (collapseCameraControls()) return true; 1461 doFocus(true); 1462 if (mShutterButton.isInTouchMode()) { 1463 mShutterButton.requestFocusFromTouch(); 1464 } else { 1465 mShutterButton.requestFocus(); 1466 } 1467 mShutterButton.setPressed(true); 1468 } 1469 return true; 1470 } 1471 1472 return super.onKeyDown(keyCode, event); 1473 } 1474 1475 @Override 1476 public boolean onKeyUp(int keyCode, KeyEvent event) { 1477 switch (keyCode) { 1478 case KeyEvent.KEYCODE_FOCUS: 1479 if (mFirstTimeInitialized) { 1480 doFocus(false); 1481 } 1482 return true; 1483 } 1484 return super.onKeyUp(keyCode, event); 1485 } 1486 1487 private void doSnap() { 1488 if (mPausing || collapseCameraControls()) return; 1489 1490 Log.v(TAG, "doSnap: mCameraState=" + mCameraState); 1491 mFocusManager.doSnap(); 1492 } 1493 1494 private void doFocus(boolean pressed) { 1495 if (mPausing || collapseCameraControls()) return; 1496 1497 // Do not do focus if there is not enough storage. 1498 if (pressed && !canTakePicture()) return; 1499 1500 mFocusManager.doFocus(pressed); 1501 } 1502 1503 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1504 // Make sure we have a surface in the holder before proceeding. 1505 if (holder.getSurface() == null) { 1506 Log.d(TAG, "holder.getSurface() == null"); 1507 return; 1508 } 1509 1510 Log.v(TAG, "surfaceChanged. w=" + w + ". h=" + h); 1511 1512 // We need to save the holder for later use, even when the mCameraDevice 1513 // is null. This could happen if onResume() is invoked after this 1514 // function. 1515 mSurfaceHolder = holder; 1516 1517 // The mCameraDevice will be null if it fails to connect to the camera 1518 // hardware. In this case we will show a dialog and then finish the 1519 // activity, so it's OK to ignore it. 1520 if (mCameraDevice == null) return; 1521 1522 // Sometimes surfaceChanged is called after onPause or before onResume. 1523 // Ignore it. 1524 if (mPausing || isFinishing()) return; 1525 1526 // Set preview display if the surface is being created. Preview was 1527 // already started. Also restart the preview if display rotation has 1528 // changed. Sometimes this happens when the device is held in portrait 1529 // and camera app is opened. Rotation animation takes some time and 1530 // display rotation in onCreate may not be what we want. 1531 if (mCameraState != PREVIEW_STOPPED 1532 && (Util.getDisplayRotation(this) == mDisplayRotation) 1533 && holder.isCreating()) { 1534 // Set preview display if the surface is being created and preview 1535 // was already started. That means preview display was set to null 1536 // and we need to set it now. 1537 setPreviewDisplay(holder); 1538 } else { 1539 // 1. Restart the preview if the size of surface was changed. The 1540 // framework may not support changing preview display on the fly. 1541 // 2. Start the preview now if surface was destroyed and preview 1542 // stopped. 1543 startPreview(); 1544 } 1545 1546 // If first time initialization is not finished, send a message to do 1547 // it later. We want to finish surfaceChanged as soon as possible to let 1548 // user see preview first. 1549 if (!mFirstTimeInitialized) { 1550 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1551 } else { 1552 initializeSecondTime(); 1553 } 1554 } 1555 1556 public void surfaceCreated(SurfaceHolder holder) { 1557 } 1558 1559 public void surfaceDestroyed(SurfaceHolder holder) { 1560 stopPreview(); 1561 mSurfaceHolder = null; 1562 } 1563 1564 private void closeCamera() { 1565 if (mCameraDevice != null) { 1566 CameraHolder.instance().release(); 1567 mCameraDevice.setZoomChangeListener(null); 1568 mCameraDevice.setFaceDetectionListener(null); 1569 mCameraDevice = null; 1570 mCameraState = PREVIEW_STOPPED; 1571 mFocusManager.onCameraReleased(); 1572 } 1573 } 1574 1575 private void setPreviewDisplay(SurfaceHolder holder) { 1576 try { 1577 mCameraDevice.setPreviewDisplay(holder); 1578 } catch (Throwable ex) { 1579 closeCamera(); 1580 throw new RuntimeException("setPreviewDisplay failed", ex); 1581 } 1582 } 1583 1584 private void startPreview() { 1585 if (mPausing || isFinishing()) return; 1586 1587 mFocusManager.resetTouchFocus(); 1588 1589 mCameraDevice.setErrorCallback(mErrorCallback); 1590 1591 // If we're previewing already, stop the preview first (this will blank 1592 // the screen). 1593 if (mCameraState != PREVIEW_STOPPED) stopPreview(); 1594 1595 setPreviewDisplay(mSurfaceHolder); 1596 mDisplayRotation = Util.getDisplayRotation(this); 1597 mDisplayOrientation = Util.getDisplayOrientation(mDisplayRotation, mCameraId); 1598 mCameraDevice.setDisplayOrientation(mDisplayOrientation); 1599 if (mFaceView != null) { 1600 mFaceView.setDisplayOrientation(mDisplayOrientation); 1601 } 1602 setCameraParameters(UPDATE_PARAM_ALL); 1603 1604 try { 1605 Log.v(TAG, "startPreview"); 1606 mCameraDevice.startPreview(); 1607 } catch (Throwable ex) { 1608 closeCamera(); 1609 throw new RuntimeException("startPreview failed", ex); 1610 } 1611 1612 startFaceDetection(); 1613 mZoomState = ZOOM_STOPPED; 1614 mCameraState = IDLE; 1615 mFocusManager.onPreviewStarted(); 1616 } 1617 1618 private void stopPreview() { 1619 if (mCameraDevice != null && mCameraState != PREVIEW_STOPPED) { 1620 Log.v(TAG, "stopPreview"); 1621 mCameraDevice.stopPreview(); 1622 } 1623 mCameraState = PREVIEW_STOPPED; 1624 mFocusManager.onPreviewStopped(); 1625 } 1626 1627 private static boolean isSupported(String value, List<String> supported) { 1628 return supported == null ? false : supported.indexOf(value) >= 0; 1629 } 1630 1631 private void updateCameraParametersInitialize() { 1632 // Reset preview frame rate to the maximum because it may be lowered by 1633 // video camera application. 1634 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1635 if (frameRates != null) { 1636 Integer max = Collections.max(frameRates); 1637 mParameters.setPreviewFrameRate(max); 1638 } 1639 1640 mParameters.setRecordingHint(false); 1641 } 1642 1643 private void updateCameraParametersZoom() { 1644 // Set zoom. 1645 if (mParameters.isZoomSupported()) { 1646 mParameters.setZoom(mZoomValue); 1647 } 1648 } 1649 1650 private void updateCameraParametersPreference() { 1651 if (mFocusAreaSupported) { 1652 mParameters.setFocusAreas(mFocusManager.getTapArea()); 1653 } 1654 1655 if (mMeteringAreaSupported) { 1656 // Use the same area for focus and metering. 1657 mParameters.setMeteringAreas(mFocusManager.getTapArea()); 1658 } 1659 1660 // Set picture size. 1661 String pictureSize = mPreferences.getString( 1662 CameraSettings.KEY_PICTURE_SIZE, null); 1663 if (pictureSize == null) { 1664 CameraSettings.initialCameraPictureSize(this, mParameters); 1665 } else { 1666 List<Size> supported = mParameters.getSupportedPictureSizes(); 1667 CameraSettings.setCameraPictureSize( 1668 pictureSize, supported, mParameters); 1669 } 1670 1671 // Set the preview frame aspect ratio according to the picture size. 1672 Size size = mParameters.getPictureSize(); 1673 1674 mPreviewFrameLayout = (PreviewFrameLayout) findViewById(R.id.frame_layout); 1675 mPreviewFrameLayout.setAspectRatio((double) size.width / size.height); 1676 1677 // Set a preview size that is closest to the viewfinder height and has 1678 // the right aspect ratio. 1679 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1680 Size optimalSize = Util.getOptimalPreviewSize(this, 1681 sizes, (double) size.width / size.height); 1682 Size original = mParameters.getPreviewSize(); 1683 if (!original.equals(optimalSize)) { 1684 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1685 1686 // Zoom related settings will be changed for different preview 1687 // sizes, so set and read the parameters to get lastest values 1688 mCameraDevice.setParameters(mParameters); 1689 mParameters = mCameraDevice.getParameters(); 1690 } 1691 Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height); 1692 1693 // Since change scene mode may change supported values, 1694 // Set scene mode first, 1695 mSceneMode = mPreferences.getString( 1696 CameraSettings.KEY_SCENE_MODE, 1697 getString(R.string.pref_camera_scenemode_default)); 1698 if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) { 1699 if (!mParameters.getSceneMode().equals(mSceneMode)) { 1700 mParameters.setSceneMode(mSceneMode); 1701 mCameraDevice.setParameters(mParameters); 1702 1703 // Setting scene mode will change the settings of flash mode, 1704 // white balance, and focus mode. Here we read back the 1705 // parameters, so we can know those settings. 1706 mParameters = mCameraDevice.getParameters(); 1707 } 1708 } else { 1709 mSceneMode = mParameters.getSceneMode(); 1710 if (mSceneMode == null) { 1711 mSceneMode = Parameters.SCENE_MODE_AUTO; 1712 } 1713 } 1714 1715 // Set JPEG quality. 1716 int jpegQuality = CameraProfile.getJpegEncodingQualityParameter(mCameraId, 1717 CameraProfile.QUALITY_HIGH); 1718 mParameters.setJpegQuality(jpegQuality); 1719 1720 // For the following settings, we need to check if the settings are 1721 // still supported by latest driver, if not, ignore the settings. 1722 1723 // Set exposure compensation 1724 int value = CameraSettings.readExposure(mPreferences); 1725 int max = mParameters.getMaxExposureCompensation(); 1726 int min = mParameters.getMinExposureCompensation(); 1727 if (value >= min && value <= max) { 1728 mParameters.setExposureCompensation(value); 1729 } else { 1730 Log.w(TAG, "invalid exposure range: " + value); 1731 } 1732 1733 if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) { 1734 // Set flash mode. 1735 String flashMode = mPreferences.getString( 1736 CameraSettings.KEY_FLASH_MODE, 1737 getString(R.string.pref_camera_flashmode_default)); 1738 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1739 if (isSupported(flashMode, supportedFlash)) { 1740 mParameters.setFlashMode(flashMode); 1741 } else { 1742 flashMode = mParameters.getFlashMode(); 1743 if (flashMode == null) { 1744 flashMode = getString( 1745 R.string.pref_camera_flashmode_no_flash); 1746 } 1747 } 1748 1749 // Set white balance parameter. 1750 String whiteBalance = mPreferences.getString( 1751 CameraSettings.KEY_WHITE_BALANCE, 1752 getString(R.string.pref_camera_whitebalance_default)); 1753 if (isSupported(whiteBalance, 1754 mParameters.getSupportedWhiteBalance())) { 1755 mParameters.setWhiteBalance(whiteBalance); 1756 } else { 1757 whiteBalance = mParameters.getWhiteBalance(); 1758 if (whiteBalance == null) { 1759 whiteBalance = Parameters.WHITE_BALANCE_AUTO; 1760 } 1761 } 1762 1763 // Set focus mode. 1764 mFocusManager.overrideFocusMode(null); 1765 mParameters.setFocusMode(mFocusManager.getFocusMode()); 1766 } else { 1767 mFocusManager.overrideFocusMode(mParameters.getFocusMode()); 1768 } 1769 } 1770 1771 // We separate the parameters into several subsets, so we can update only 1772 // the subsets actually need updating. The PREFERENCE set needs extra 1773 // locking because the preference can be changed from GLThread as well. 1774 private void setCameraParameters(int updateSet) { 1775 mParameters = mCameraDevice.getParameters(); 1776 1777 if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) { 1778 updateCameraParametersInitialize(); 1779 } 1780 1781 if ((updateSet & UPDATE_PARAM_ZOOM) != 0) { 1782 updateCameraParametersZoom(); 1783 } 1784 1785 if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) { 1786 updateCameraParametersPreference(); 1787 } 1788 1789 mCameraDevice.setParameters(mParameters); 1790 } 1791 1792 // If the Camera is idle, update the parameters immediately, otherwise 1793 // accumulate them in mUpdateSet and update later. 1794 private void setCameraParametersWhenIdle(int additionalUpdateSet) { 1795 mUpdateSet |= additionalUpdateSet; 1796 if (mCameraDevice == null) { 1797 // We will update all the parameters when we open the device, so 1798 // we don't need to do anything now. 1799 mUpdateSet = 0; 1800 return; 1801 } else if (isCameraIdle()) { 1802 setCameraParameters(mUpdateSet); 1803 updateSceneModeUI(); 1804 mUpdateSet = 0; 1805 } else { 1806 if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) { 1807 mHandler.sendEmptyMessageDelayed( 1808 SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000); 1809 } 1810 } 1811 } 1812 1813 private void gotoGallery() { 1814 MenuHelper.gotoCameraImageGallery(this); 1815 } 1816 1817 private boolean isCameraIdle() { 1818 return (mCameraState == IDLE) || (mFocusManager.isFocusCompleted()); 1819 } 1820 1821 private boolean isImageCaptureIntent() { 1822 String action = getIntent().getAction(); 1823 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1824 } 1825 1826 private void setupCaptureParams() { 1827 Bundle myExtras = getIntent().getExtras(); 1828 if (myExtras != null) { 1829 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1830 mCropValue = myExtras.getString("crop"); 1831 } 1832 } 1833 1834 private void showPostCaptureAlert() { 1835 if (mIsImageCaptureIntent) { 1836 mShutterButton.setVisibility(View.GONE); 1837 mIndicatorControlContainer.setVisibility(View.GONE); 1838 1839 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1840 for (int id : pickIds) { 1841 Util.fadeIn(findViewById(id)); 1842 } 1843 } 1844 } 1845 1846 private void hidePostCaptureAlert() { 1847 if (mIsImageCaptureIntent) { 1848 enableCameraControls(true); 1849 1850 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1851 for (int id : pickIds) { 1852 (findViewById(id)).setVisibility(View.GONE); 1853 } 1854 1855 Util.fadeIn(mShutterButton); 1856 Util.fadeIn(mIndicatorControlContainer); 1857 } 1858 } 1859 1860 @Override 1861 public boolean onPrepareOptionsMenu(Menu menu) { 1862 super.onPrepareOptionsMenu(menu); 1863 // Only show the menu when camera is idle. 1864 for (int i = 0; i < menu.size(); i++) { 1865 menu.getItem(i).setVisible(isCameraIdle()); 1866 } 1867 1868 return true; 1869 } 1870 1871 @Override 1872 public boolean onCreateOptionsMenu(Menu menu) { 1873 super.onCreateOptionsMenu(menu); 1874 1875 if (mIsImageCaptureIntent) { 1876 // No options menu for attach mode. 1877 return false; 1878 } else { 1879 addBaseMenuItems(menu); 1880 } 1881 return true; 1882 } 1883 1884 private void addBaseMenuItems(Menu menu) { 1885 MenuHelper.addSwitchModeMenuItem(menu, ModePicker.MODE_VIDEO, new Runnable() { 1886 public void run() { 1887 switchToOtherMode(ModePicker.MODE_VIDEO); 1888 } 1889 }); 1890 MenuHelper.addSwitchModeMenuItem(menu, ModePicker.MODE_PANORAMA, new Runnable() { 1891 public void run() { 1892 switchToOtherMode(ModePicker.MODE_PANORAMA); 1893 } 1894 }); 1895 MenuItem gallery = menu.add(R.string.camera_gallery_photos_text) 1896 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1897 public boolean onMenuItemClick(MenuItem item) { 1898 gotoGallery(); 1899 return true; 1900 } 1901 }); 1902 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1903 mGalleryItems.add(gallery); 1904 1905 if (mNumberOfCameras > 1) { 1906 menu.add(R.string.switch_camera_id) 1907 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1908 public boolean onMenuItemClick(MenuItem item) { 1909 CameraSettings.writePreferredCameraId(mPreferences, 1910 ((mCameraId == mFrontCameraId) 1911 ? mBackCameraId : mFrontCameraId)); 1912 onSharedPreferenceChanged(); 1913 return true; 1914 } 1915 }).setIcon(android.R.drawable.ic_menu_camera); 1916 } 1917 } 1918 1919 private boolean switchToOtherMode(int mode) { 1920 if (isFinishing() || !isCameraIdle()) return false; 1921 MenuHelper.gotoMode(mode, Camera.this); 1922 mHandler.removeMessages(FIRST_TIME_INIT); 1923 finish(); 1924 return true; 1925 } 1926 1927 public boolean onModeChanged(int mode) { 1928 if (mode != ModePicker.MODE_CAMERA) { 1929 return switchToOtherMode(mode); 1930 } else { 1931 return true; 1932 } 1933 } 1934 1935 public void onSharedPreferenceChanged() { 1936 // ignore the events after "onPause()" 1937 if (mPausing) return; 1938 1939 boolean recordLocation; 1940 1941 recordLocation = RecordLocationPreference.get( 1942 mPreferences, getContentResolver()); 1943 1944 if (mRecordLocation != recordLocation) { 1945 mRecordLocation = recordLocation; 1946 if (mRecordLocation) { 1947 mLocationManager.startReceivingLocationUpdates(); 1948 } else { 1949 mLocationManager.stopReceivingLocationUpdates(); 1950 } 1951 } 1952 int cameraId = CameraSettings.readPreferredCameraId(mPreferences); 1953 if (mCameraId != cameraId) { 1954 // Restart the activity to have a crossfade animation. 1955 // TODO: Use SurfaceTexture to implement a better and faster 1956 // animation. 1957 if (mIsImageCaptureIntent) { 1958 // If the intent is camera capture, stay in camera capture mode. 1959 MenuHelper.gotoCameraMode(this, getIntent()); 1960 } else { 1961 MenuHelper.gotoCameraMode(this); 1962 } 1963 1964 finish(); 1965 } else { 1966 setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE); 1967 } 1968 1969 int exposureValue = CameraSettings.readExposure(mPreferences); 1970 updateExposureOnScreenIndicator(exposureValue); 1971 } 1972 1973 @Override 1974 public void onUserInteraction() { 1975 super.onUserInteraction(); 1976 keepScreenOnAwhile(); 1977 } 1978 1979 private void resetScreenOn() { 1980 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1981 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1982 } 1983 1984 private void keepScreenOnAwhile() { 1985 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1986 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1987 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1988 } 1989 1990 public void onRestorePreferencesClicked() { 1991 if (mPausing) return; 1992 Runnable runnable = new Runnable() { 1993 public void run() { 1994 restorePreferences(); 1995 } 1996 }; 1997 MenuHelper.confirmAction(this, 1998 getString(R.string.confirm_restore_title), 1999 getString(R.string.confirm_restore_message), 2000 runnable); 2001 } 2002 2003 private void restorePreferences() { 2004 // Reset the zoom. Zoom value is not stored in preference. 2005 if (mParameters.isZoomSupported()) { 2006 mZoomValue = 0; 2007 setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM); 2008 mZoomControl.setZoomIndex(0); 2009 } 2010 if (mIndicatorControlContainer != null) { 2011 mIndicatorControlContainer.dismissSettingPopup(); 2012 CameraSettings.restorePreferences(Camera.this, mPreferences, 2013 mParameters); 2014 mIndicatorControlContainer.reloadPreferences(); 2015 onSharedPreferenceChanged(); 2016 } 2017 } 2018 2019 public void onOverriddenPreferencesClicked() { 2020 if (mPausing) return; 2021 if (mNotSelectableToast == null) { 2022 String str = getResources().getString(R.string.not_selectable_in_scene_mode); 2023 mNotSelectableToast = Toast.makeText(Camera.this, str, Toast.LENGTH_SHORT); 2024 } 2025 mNotSelectableToast.show(); 2026 } 2027 2028 private void showSharePopup() { 2029 Uri uri = mThumbnail.getUri(); 2030 if (mSharePopup == null || !uri.equals(mSharePopup.getUri())) { 2031 mSharePopup = new SharePopup(this, uri, mThumbnail.getBitmap(), 2032 mOrientationCompensation, mPreviewFrameLayout); 2033 } 2034 mSharePopup.showAtLocation(mThumbnailView, Gravity.NO_GRAVITY, 0, 0); 2035 } 2036 2037 @Override 2038 public void onFaceDetection(Face[] faces, android.hardware.Camera camera) { 2039 mFaceView.setFaces(faces); 2040 } 2041 2042 private void showTapToFocusToast() { 2043 // Show the toast. 2044 RotateLayout v = (RotateLayout) findViewById(R.id.tap_to_focus_prompt); 2045 v.setOrientation(mOrientationCompensation); 2046 v.startAnimation(AnimationUtils.loadAnimation(this, R.anim.on_screen_hint_enter)); 2047 v.setVisibility(View.VISIBLE); 2048 mHandler.sendEmptyMessageDelayed(DISMISS_TAP_TO_FOCUS_TOAST, 5000); 2049 // Clear the preference. 2050 Editor editor = mPreferences.edit(); 2051 editor.putBoolean(CameraSettings.KEY_TAP_TO_FOCUS_PROMPT_SHOWN, false); 2052 editor.apply(); 2053 } 2054 2055 private void initializeCapabilities() { 2056 mInitialParams = mCameraDevice.getParameters(); 2057 mFocusManager.initializeParameters(mInitialParams); 2058 mFocusAreaSupported = (mInitialParams.getMaxNumFocusAreas() > 0 2059 && isSupported(Parameters.FOCUS_MODE_AUTO, 2060 mInitialParams.getSupportedFocusModes())); 2061 mMeteringAreaSupported = (mInitialParams.getMaxNumMeteringAreas() > 0); 2062 } 2063} 2064