Camera.java revision e8697d7437c343e31e815fd4714238afafc7b1ac
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 android.app.Activity; 20import android.content.ActivityNotFoundException; 21import android.content.BroadcastReceiver; 22import android.content.ContentProviderClient; 23import android.content.ContentResolver; 24import android.content.Context; 25import android.content.Intent; 26import android.content.IntentFilter; 27import android.content.SharedPreferences; 28import android.content.SharedPreferences.OnSharedPreferenceChangeListener; 29import android.content.res.Resources; 30import android.graphics.Bitmap; 31import android.graphics.BitmapFactory; 32import android.hardware.Camera.Parameters; 33import android.hardware.Camera.PictureCallback; 34import android.hardware.Camera.Size; 35import android.location.Location; 36import android.location.LocationManager; 37import android.location.LocationProvider; 38import android.media.AudioManager; 39import android.media.ToneGenerator; 40import android.media.CameraProfile; 41import android.net.Uri; 42import android.os.Build; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Environment; 46import android.os.Handler; 47import android.os.Message; 48import android.os.SystemClock; 49import android.preference.PreferenceManager; 50import android.provider.MediaStore; 51import android.provider.Settings; 52import android.util.AttributeSet; 53import android.util.Log; 54import android.view.Display; 55import android.view.GestureDetector; 56import android.view.KeyEvent; 57import android.view.LayoutInflater; 58import android.view.Menu; 59import android.view.MenuItem; 60import android.view.MotionEvent; 61import android.view.OrientationEventListener; 62import android.view.SurfaceHolder; 63import android.view.SurfaceView; 64import android.view.View; 65import android.view.ViewGroup; 66import android.view.Window; 67import android.view.WindowManager; 68import android.view.MenuItem.OnMenuItemClickListener; 69import android.widget.ImageView; 70import android.widget.ZoomButtonsController; 71 72import com.android.camera.gallery.IImage; 73import com.android.camera.gallery.IImageList; 74import com.android.camera.ui.GLRootView; 75import com.android.camera.ui.HeadUpDisplay; 76 77import java.io.File; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.io.OutputStream; 82import java.text.SimpleDateFormat; 83import java.util.ArrayList; 84import java.util.Collections; 85import java.util.Date; 86import java.util.List; 87 88/** The Camera activity which can preview and take pictures. */ 89public class Camera extends NoSearchActivity implements View.OnClickListener, 90 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 91 Switcher.OnSwitchListener, OnScreenSettings.OnVisibilityChangedListener, 92 OnSharedPreferenceChangeListener { 93 94 private static final String TAG = "camera"; 95 96 private static final int CROP_MSG = 1; 97 private static final int FIRST_TIME_INIT = 2; 98 private static final int RESTART_PREVIEW = 3; 99 private static final int CLEAR_SCREEN_DELAY = 4; 100 101 // The brightness settings used when it is set to automatic in the system. 102 // The reason why it is set to 0.7 is just because 1.0 is too bright. 103 private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f; 104 105 private static final int SCREEN_DELAY = 2 * 60 * 1000; 106 private static final int FOCUS_BEEP_VOLUME = 100; 107 108 private boolean mZooming = false; 109 private boolean mSmoothZoomSupported = false; 110 private int mZoomValue; // The current zoom value. 111 private int mZoomMax; 112 113 private Parameters mParameters; 114 private Parameters mInitialParams; 115 116 private OrientationEventListener mOrientationListener; 117 private int mLastOrientation = 0; // No rotation (landscape) by default. 118 private SharedPreferences mPreferences; 119 120 private static final int IDLE = 1; 121 private static final int SNAPSHOT_IN_PROGRESS = 2; 122 123 private static final boolean SWITCH_CAMERA = true; 124 private static final boolean SWITCH_VIDEO = false; 125 126 private int mStatus = IDLE; 127 private static final String sTempCropFilename = "crop-temp"; 128 129 private android.hardware.Camera mCameraDevice; 130 private ContentProviderClient mMediaProviderClient; 131 private SurfaceView mSurfaceView; 132 private SurfaceHolder mSurfaceHolder = null; 133 private ShutterButton mShutterButton; 134 private FocusRectangle mFocusRectangle; 135 private ToneGenerator mFocusToneGenerator; 136 private ZoomButtonsController mZoomButtons; 137 private GestureDetector mGestureDetector; 138 private Switcher mSwitcher; 139 private boolean mStartPreviewFail = false; 140 141 private GLRootView mRootView; 142 143 // mPostCaptureAlert, mLastPictureButton, mThumbController 144 // are non-null only if isImageCaptureIntent() is true. 145 private ImageView mLastPictureButton; 146 private ThumbnailController mThumbController; 147 148 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 149 private String mCropValue; 150 private Uri mSaveUri; 151 152 private ImageCapture mImageCapture = null; 153 154 private boolean mPreviewing; 155 private boolean mPausing; 156 private boolean mFirstTimeInitialized; 157 private boolean mIsImageCaptureIntent; 158 private boolean mRecordLocation; 159 160 private static final int FOCUS_NOT_STARTED = 0; 161 private static final int FOCUSING = 1; 162 private static final int FOCUSING_SNAP_ON_FINISH = 2; 163 private static final int FOCUS_SUCCESS = 3; 164 private static final int FOCUS_FAIL = 4; 165 private int mFocusState = FOCUS_NOT_STARTED; 166 167 private ContentResolver mContentResolver; 168 private boolean mDidRegister = false; 169 170 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 171 172 private LocationManager mLocationManager = null; 173 174 // Use OneShotPreviewCallback to measure the time between 175 // JpegPictureCallback and preview. 176 private final OneShotPreviewCallback mOneShotPreviewCallback = 177 new OneShotPreviewCallback(); 178 private final ShutterCallback mShutterCallback = new ShutterCallback(); 179 private final PostViewPictureCallback mPostViewPictureCallback = 180 new PostViewPictureCallback(); 181 private final RawPictureCallback mRawPictureCallback = 182 new RawPictureCallback(); 183 private final AutoFocusCallback mAutoFocusCallback = 184 new AutoFocusCallback(); 185 private final ZoomCallback mZoomCallback = new ZoomCallback(); 186 // Use the ErrorCallback to capture the crash count 187 // on the mediaserver 188 private final ErrorCallback mErrorCallback = new ErrorCallback(); 189 190 private long mFocusStartTime; 191 private long mFocusCallbackTime; 192 private long mCaptureStartTime; 193 private long mShutterCallbackTime; 194 private long mPostViewPictureCallbackTime; 195 private long mRawPictureCallbackTime; 196 private long mJpegPictureCallbackTime; 197 private int mPicturesRemaining; 198 199 // These latency time are for the CameraLatency test. 200 public long mAutoFocusTime; 201 public long mShutterLag; 202 public long mShutterToPictureDisplayedTime; 203 public long mPictureDisplayedToJpegCallbackTime; 204 public long mJpegCallbackToFirstFrameTime; 205 206 // Add for test 207 public static boolean mMediaServerDied = false; 208 209 // Focus mode. Options are pref_camera_focusmode_entryvalues. 210 private String mFocusMode; 211 212 private final Handler mHandler = new MainHandler(); 213 private OnScreenSettings mSettings; 214 private boolean mQuickCapture; 215 private HeadUpDisplay mHeadUpDisplay; 216 217 /** 218 * This Handler is used to post message back onto the main thread of the 219 * application 220 */ 221 private class MainHandler extends Handler { 222 @Override 223 public void handleMessage(Message msg) { 224 switch (msg.what) { 225 case RESTART_PREVIEW: { 226 restartPreview(); 227 break; 228 } 229 230 case CLEAR_SCREEN_DELAY: { 231 getWindow().clearFlags( 232 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 233 break; 234 } 235 236 case FIRST_TIME_INIT: { 237 initializeFirstTime(); 238 break; 239 } 240 } 241 } 242 } 243 244 private void keepMediaProviderInstance() { 245 // We want to keep a reference to MediaProvider in camera's lifecycle. 246 // TODO: Utilize mMediaProviderClient instance to replace 247 // ContentResolver calls. 248 if (mMediaProviderClient == null) { 249 mMediaProviderClient = getContentResolver() 250 .acquireContentProviderClient(MediaStore.AUTHORITY); 251 } 252 } 253 254 // Snapshots can only be taken after this is called. It should be called 255 // once only. We could have done these things in onCreate() but we want to 256 // make preview screen appear as soon as possible. 257 private void initializeFirstTime() { 258 if (mFirstTimeInitialized) return; 259 260 // Create orientation listenter. This should be done first because it 261 // takes some time to get first orientation. 262 mOrientationListener = new OrientationEventListener(Camera.this) { 263 @Override 264 public void onOrientationChanged(int orientation) { 265 // We keep the last known orientation. So if the user 266 // first orient the camera then point the camera to 267 if (orientation != ORIENTATION_UNKNOWN) { 268 orientation += 90; 269 } 270 orientation = ImageManager.roundOrientation(orientation); 271 if (orientation != mLastOrientation) { 272 mLastOrientation = orientation; 273 if (!mIsImageCaptureIntent) { 274 setOrientationIndicator(mLastOrientation); 275 } 276 mRootView.queueEvent(new Runnable() { 277 public void run() { 278 mHeadUpDisplay.setOrientation(mLastOrientation); 279 } 280 }); 281 } 282 } 283 }; 284 mOrientationListener.enable(); 285 286 // Initialize location sevice. 287 mLocationManager = (LocationManager) 288 getSystemService(Context.LOCATION_SERVICE); 289 mRecordLocation = RecordLocationPreference.get( 290 mPreferences, getContentResolver()); 291 if (mRecordLocation) startReceivingLocationUpdates(); 292 293 keepMediaProviderInstance(); 294 checkStorage(); 295 296 // Initialize last picture button. 297 mContentResolver = getContentResolver(); 298 if (!mIsImageCaptureIntent) { 299 findViewById(R.id.camera_switch).setOnClickListener(this); 300 mLastPictureButton = 301 (ImageView) findViewById(R.id.review_thumbnail); 302 mLastPictureButton.setOnClickListener(this); 303 mThumbController = new ThumbnailController( 304 getResources(), mLastPictureButton, mContentResolver); 305 mThumbController.loadData(ImageManager.getLastImageThumbPath()); 306 // Update last image thumbnail. 307 updateThumbnailButton(); 308 } 309 310 // Initialize shutter button. 311 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 312 mShutterButton.setOnShutterButtonListener(this); 313 mShutterButton.setVisibility(View.VISIBLE); 314 315 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 316 updateFocusIndicator(); 317 318 ImageManager.ensureOSXCompatibleFolder(); 319 320 initializeScreenBrightness(); 321 322 installIntentFilter(); 323 324 initializeFocusTone(); 325 326 initializeZoom(); 327 328 mFirstTimeInitialized = true; 329 330 mRootView = (GLRootView) findViewById(R.id.settings_ui); 331 mHeadUpDisplay = new HeadUpDisplay(); 332 CameraSettings settings = new CameraSettings(this, mInitialParams); 333 mHeadUpDisplay.initialize(this, 334 settings.getPreferenceGroup(R.xml.camera_preferences)); 335 mRootView.setContentPane(mHeadUpDisplay); 336 } 337 338 private void updateThumbnailButton() { 339 // Update last image if URI is invalid and the storage is ready. 340 if (!mThumbController.isUriValid() && mPicturesRemaining >= 0) { 341 updateLastImage(); 342 } 343 mThumbController.updateDisplayIfNeeded(); 344 } 345 346 // If the activity is paused and resumed, this method will be called in 347 // onResume. 348 private void initializeSecondTime() { 349 // Start orientation listener as soon as possible because it takes 350 // some time to get first orientation. 351 mOrientationListener.enable(); 352 353 // Start location update if needed. 354 mRecordLocation = RecordLocationPreference.get( 355 mPreferences, getContentResolver()); 356 if (mRecordLocation) startReceivingLocationUpdates(); 357 358 installIntentFilter(); 359 360 initializeFocusTone(); 361 362 keepMediaProviderInstance(); 363 checkStorage(); 364 365 if (mZoomButtons != null) { 366 mCameraDevice.setZoomCallback(mZoomCallback); 367 } 368 369 if (!mIsImageCaptureIntent) { 370 updateThumbnailButton(); 371 } 372 } 373 374 private void initializeZoom() { 375 if (!mParameters.isZoomSupported()) return; 376 377 mZoomMax = mParameters.getMaxZoom(); 378 mSmoothZoomSupported = mParameters.isSmoothZoomSupported(); 379 380 mGestureDetector = new GestureDetector(this, new ZoomGestureListener()); 381 mCameraDevice.setZoomCallback(mZoomCallback); 382 mZoomButtons = new ZoomButtonsController(mSurfaceView); 383 mZoomButtons.setAutoDismissed(true); 384 mZoomButtons.setZoomSpeed(100); 385 mZoomButtons.setOnZoomListener( 386 new ZoomButtonsController.OnZoomListener() { 387 public void onVisibilityChanged(boolean visible) { 388 if (visible) { 389 updateZoomButtonsEnabled(); 390 } 391 } 392 393 public void onZoom(boolean zoomIn) { 394 if (isZooming()) return; 395 396 if (zoomIn) { 397 if (mZoomValue < mZoomMax) { 398 if (mSmoothZoomSupported) { 399 mCameraDevice.startSmoothZoom(mZoomValue + 1); 400 mZooming = true; 401 } else { 402 mParameters.setZoom(++mZoomValue); 403 mCameraDevice.setParameters(mParameters); 404 updateZoomButtonsEnabled(); 405 } 406 } 407 } else { 408 if (mZoomValue > 0) { 409 if (mSmoothZoomSupported) { 410 mCameraDevice.startSmoothZoom(mZoomValue - 1); 411 mZooming = true; 412 } else { 413 mParameters.setZoom(--mZoomValue); 414 mCameraDevice.setParameters(mParameters); 415 updateZoomButtonsEnabled(); 416 } 417 } 418 } 419 } 420 }); 421 } 422 423 public void onVisibilityChanged(boolean visible) { 424 // When the on-screen setting is not displayed, we show the gripper. 425 // When the on-screen setting is displayed, we hide the gripper. 426 int reverseVisibility = visible ? View.INVISIBLE : View.VISIBLE; 427 findViewById(R.id.btn_gripper).setVisibility(reverseVisibility); 428 findViewById(R.id.indicator_bar).setVisibility(reverseVisibility); 429 430 if (visible) { 431 mPreferences.registerOnSharedPreferenceChangeListener(this); 432 } else { 433 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 434 } 435 } 436 437 private boolean isZooming() { 438 Log.v(TAG, "mZooming=" + mZooming); 439 return mZooming; 440 } 441 442 private void updateZoomButtonsEnabled() { 443 mZoomButtons.setZoomInEnabled(mZoomValue < mZoomMax); 444 mZoomButtons.setZoomOutEnabled(mZoomValue > 0); 445 } 446 447 private class ZoomGestureListener extends 448 GestureDetector.SimpleOnGestureListener { 449 @Override 450 public boolean onDown(MotionEvent e) { 451 // Show zoom buttons only when preview is started and snapshot 452 // is not in progress. mZoomButtons may be null if it is not 453 // initialized. 454 if (!mPausing && isCameraIdle() && mPreviewing 455 && mZoomButtons != null) { 456 mZoomButtons.setVisible(true); 457 } 458 return true; 459 } 460 461 @Override 462 public boolean onDoubleTap(MotionEvent e) { 463 // Perform zoom only when preview is started and snapshot is not in 464 // progress. 465 if (mPausing || !isCameraIdle() || !mPreviewing 466 || mZoomButtons == null || isZooming()) { 467 return false; 468 } 469 470 if (mZoomValue < mZoomMax) { 471 // Zoom in to the maximum. 472 while (mZoomValue < mZoomMax) { 473 mParameters.setZoom(++mZoomValue); 474 mCameraDevice.setParameters(mParameters); 475 // Wait for a while so we are not changing zoom too fast. 476 try { 477 Thread.sleep(5); 478 } catch (InterruptedException ex) { 479 } 480 } 481 } else { 482 // Zoom out to the minimum. 483 while (mZoomValue > 0) { 484 mParameters.setZoom(--mZoomValue); 485 mCameraDevice.setParameters(mParameters); 486 // Wait for a while so we are not changing zoom too fast. 487 try { 488 Thread.sleep(5); 489 } catch (InterruptedException ex) { 490 } 491 } 492 } 493 updateZoomButtonsEnabled(); 494 return true; 495 } 496 } 497 498 @Override 499 public boolean dispatchTouchEvent(MotionEvent m) { 500 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 501 return mGestureDetector.onTouchEvent(m); 502 } 503 return true; 504 } 505 506 LocationListener [] mLocationListeners = new LocationListener[] { 507 new LocationListener(LocationManager.GPS_PROVIDER), 508 new LocationListener(LocationManager.NETWORK_PROVIDER) 509 }; 510 511 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 512 @Override 513 public void onReceive(Context context, Intent intent) { 514 String action = intent.getAction(); 515 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 516 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 517 || action.equals(Intent.ACTION_MEDIA_CHECKING) 518 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 519 checkStorage(); 520 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 521 checkStorage(); 522 if (!mIsImageCaptureIntent) { 523 updateThumbnailButton(); 524 } 525 } 526 } 527 }; 528 529 private class LocationListener 530 implements android.location.LocationListener { 531 Location mLastLocation; 532 boolean mValid = false; 533 String mProvider; 534 535 public LocationListener(String provider) { 536 mProvider = provider; 537 mLastLocation = new Location(mProvider); 538 } 539 540 public void onLocationChanged(Location newLocation) { 541 if (newLocation.getLatitude() == 0.0 542 && newLocation.getLongitude() == 0.0) { 543 // Hack to filter out 0.0,0.0 locations 544 return; 545 } 546 // If GPS is available before start camera, we won't get status 547 // update so update GPS indicator when we receive data. 548 if (mRecordLocation 549 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 550 if (mHeadUpDisplay != null) { 551 mHeadUpDisplay.setGpsHasSignal(true); 552 } 553 } 554 mLastLocation.set(newLocation); 555 mValid = true; 556 } 557 558 public void onProviderEnabled(String provider) { 559 } 560 561 public void onProviderDisabled(String provider) { 562 mValid = false; 563 } 564 565 public void onStatusChanged( 566 String provider, int status, Bundle extras) { 567 switch(status) { 568 case LocationProvider.OUT_OF_SERVICE: 569 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 570 mValid = false; 571 if (mRecordLocation && 572 LocationManager.GPS_PROVIDER.equals(provider)) { 573 if (mHeadUpDisplay != null) { 574 mHeadUpDisplay.setGpsHasSignal(false); 575 } 576 } 577 break; 578 } 579 } 580 } 581 582 public Location current() { 583 return mValid ? mLastLocation : null; 584 } 585 } 586 587 private final class OneShotPreviewCallback 588 implements android.hardware.Camera.PreviewCallback { 589 public void onPreviewFrame(byte[] data, 590 android.hardware.Camera camera) { 591 long now = System.currentTimeMillis(); 592 if (mJpegPictureCallbackTime != 0) { 593 mJpegCallbackToFirstFrameTime = now - mJpegPictureCallbackTime; 594 Log.v(TAG, "mJpegCallbackToFirstFrameTime = " 595 + mJpegCallbackToFirstFrameTime + "ms"); 596 mJpegPictureCallbackTime = 0; 597 } else { 598 Log.v(TAG, "Got first frame"); 599 } 600 } 601 } 602 603 private final class ShutterCallback 604 implements android.hardware.Camera.ShutterCallback { 605 public void onShutter() { 606 mShutterCallbackTime = System.currentTimeMillis(); 607 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 608 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 609 clearFocusState(); 610 } 611 } 612 613 private final class PostViewPictureCallback implements PictureCallback { 614 public void onPictureTaken( 615 byte [] data, android.hardware.Camera camera) { 616 mPostViewPictureCallbackTime = System.currentTimeMillis(); 617 Log.v(TAG, "mShutterToPostViewCallbackTime = " 618 + (mPostViewPictureCallbackTime - mShutterCallbackTime) 619 + "ms"); 620 } 621 } 622 623 private final class RawPictureCallback implements PictureCallback { 624 public void onPictureTaken( 625 byte [] rawData, android.hardware.Camera camera) { 626 mRawPictureCallbackTime = System.currentTimeMillis(); 627 Log.v(TAG, "mShutterToRawCallbackTime = " 628 + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms"); 629 } 630 } 631 632 private final class JpegPictureCallback implements PictureCallback { 633 Location mLocation; 634 635 public JpegPictureCallback(Location loc) { 636 mLocation = loc; 637 } 638 639 public void onPictureTaken( 640 final byte [] jpegData, final android.hardware.Camera camera) { 641 if (mPausing) { 642 return; 643 } 644 645 mJpegPictureCallbackTime = System.currentTimeMillis(); 646 // If postview callback has arrived, the captured image is displayed 647 // in postview callback. If not, the captured image is displayed in 648 // raw picture callback. 649 if (mPostViewPictureCallbackTime != 0) { 650 mShutterToPictureDisplayedTime = 651 mPostViewPictureCallbackTime - mShutterCallbackTime; 652 mPictureDisplayedToJpegCallbackTime = 653 mJpegPictureCallbackTime - mPostViewPictureCallbackTime; 654 } else { 655 mShutterToPictureDisplayedTime = 656 mRawPictureCallbackTime - mShutterCallbackTime; 657 mPictureDisplayedToJpegCallbackTime = 658 mJpegPictureCallbackTime - mRawPictureCallbackTime; 659 } 660 Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = " 661 + mPictureDisplayedToJpegCallbackTime + "ms"); 662 663 if (!mIsImageCaptureIntent) { 664 // We want to show the taken picture for a while, so we wait 665 // for at least 1.2 second before restarting the preview. 666 long delay = 1200 - mPictureDisplayedToJpegCallbackTime; 667 if (delay < 0 || mQuickCapture) { 668 restartPreview(); 669 } else { 670 mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay); 671 } 672 } 673 mImageCapture.storeImage(jpegData, camera, mLocation); 674 675 // Calculate this in advance of each shot so we don't add to shutter 676 // latency. It's true that someone else could write to the SD card in 677 // the mean time and fill it, but that could have happened between the 678 // shutter press and saving the JPEG too. 679 calculatePicturesRemaining(); 680 681 if (mPicturesRemaining < 1) { 682 updateStorageHint(mPicturesRemaining); 683 } 684 } 685 } 686 687 private final class AutoFocusCallback 688 implements android.hardware.Camera.AutoFocusCallback { 689 public void onAutoFocus( 690 boolean focused, android.hardware.Camera camera) { 691 mFocusCallbackTime = System.currentTimeMillis(); 692 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 693 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 694 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 695 // Take the picture no matter focus succeeds or fails. No need 696 // to play the AF sound if we're about to play the shutter 697 // sound. 698 if (focused) { 699 mFocusState = FOCUS_SUCCESS; 700 } else { 701 mFocusState = FOCUS_FAIL; 702 } 703 mImageCapture.onSnap(); 704 } else if (mFocusState == FOCUSING) { 705 // User is half-pressing the focus key. Play the focus tone. 706 // Do not take the picture now. 707 ToneGenerator tg = mFocusToneGenerator; 708 if (tg != null) { 709 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 710 } 711 if (focused) { 712 mFocusState = FOCUS_SUCCESS; 713 } else { 714 mFocusState = FOCUS_FAIL; 715 } 716 } else if (mFocusState == FOCUS_NOT_STARTED) { 717 // User has released the focus key before focus completes. 718 // Do nothing. 719 } 720 updateFocusIndicator(); 721 } 722 } 723 724 private static final class ErrorCallback 725 implements android.hardware.Camera.ErrorCallback { 726 public void onError(int error, android.hardware.Camera camera) { 727 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 728 mMediaServerDied = true; 729 Log.v(TAG, "media server died"); 730 } 731 } 732 } 733 734 private final class ZoomCallback 735 implements android.hardware.Camera.ZoomCallback { 736 public void onZoomUpdate(int zoomValue, boolean stopped, 737 android.hardware.Camera camera) { 738 Log.v(TAG, "ZoomCallback: zoom value=" + zoomValue + ". stopped=" 739 + stopped); 740 mZoomValue = zoomValue; 741 // Keep mParameters up to date. We do not getParameter again in 742 // takePicture. If we do not do this, wrong zoom value will be set. 743 mParameters.setZoom(zoomValue); 744 // We only care if the zoom is stopped. mZooming is set to true when 745 // we start smooth zoom. 746 if (stopped) mZooming = false; 747 updateZoomButtonsEnabled(); 748 } 749 } 750 751 private class ImageCapture { 752 753 private boolean mCancel = false; 754 755 private Uri mLastContentUri; 756 757 byte[] mCaptureOnlyData; 758 759 // Returns the rotation degree in the jpeg header. 760 private int storeImage(byte[] data, Location loc) { 761 try { 762 long dateTaken = System.currentTimeMillis(); 763 String title = createName(dateTaken); 764 String filename = title + ".jpg"; 765 int[] degree = new int[1]; 766 mLastContentUri = ImageManager.addImage( 767 mContentResolver, 768 title, 769 dateTaken, 770 loc, // location from gps/network 771 ImageManager.CAMERA_IMAGE_BUCKET_NAME, filename, 772 null, data, 773 degree); 774 if (mLastContentUri == null) { 775 // this means we got an error 776 mCancel = true; 777 } 778 if (!mCancel) { 779 ImageManager.setImageSize(mContentResolver, mLastContentUri, 780 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 781 filename).length()); 782 } 783 return degree[0]; 784 } catch (Exception ex) { 785 Log.e(TAG, "Exception while compressing image.", ex); 786 return 0; 787 } 788 } 789 790 public void storeImage(final byte[] data, 791 android.hardware.Camera camera, Location loc) { 792 if (!mIsImageCaptureIntent) { 793 int degree = storeImage(data, loc); 794 sendBroadcast(new Intent( 795 "com.android.camera.NEW_PICTURE", mLastContentUri)); 796 setLastPictureThumb(data, degree, 797 mImageCapture.getLastCaptureUri()); 798 mThumbController.updateDisplayIfNeeded(); 799 } else { 800 mCaptureOnlyData = data; 801 showPostCaptureAlert(); 802 } 803 } 804 805 /** 806 * Initiate the capture of an image. 807 */ 808 public void initiate() { 809 if (mCameraDevice == null) { 810 return; 811 } 812 813 mCancel = false; 814 815 capture(); 816 } 817 818 public Uri getLastCaptureUri() { 819 return mLastContentUri; 820 } 821 822 public byte[] getLastCaptureData() { 823 return mCaptureOnlyData; 824 } 825 826 private void capture() { 827 mCaptureOnlyData = null; 828 829 // Set rotation. 830 mParameters.setRotation(mLastOrientation); 831 832 // Clear previous GPS location from the parameters. 833 mParameters.removeGpsData(); 834 835 // Set GPS location. 836 Location loc = mRecordLocation ? getCurrentLocation() : null; 837 if (loc != null) { 838 double lat = loc.getLatitude(); 839 double lon = loc.getLongitude(); 840 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 841 842 if (hasLatLon) { 843 mParameters.setGpsLatitude(lat); 844 mParameters.setGpsLongitude(lon); 845 mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase()); 846 if (loc.hasAltitude()) { 847 mParameters.setGpsAltitude(loc.getAltitude()); 848 } else { 849 // for NETWORK_PROVIDER location provider, we may have 850 // no altitude information, but the driver needs it, so 851 // we fake one. 852 mParameters.setGpsAltitude(0); 853 } 854 if (loc.getTime() != 0) { 855 // Location.getTime() is UTC in milliseconds. 856 // gps-timestamp is UTC in seconds. 857 long utcTimeSeconds = loc.getTime() / 1000; 858 mParameters.setGpsTimestamp(utcTimeSeconds); 859 } 860 } else { 861 loc = null; 862 } 863 } 864 865 mCameraDevice.setParameters(mParameters); 866 867 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 868 mPostViewPictureCallback, new JpegPictureCallback(loc)); 869 mPreviewing = false; 870 } 871 872 public void onSnap() { 873 // If we are already in the middle of taking a snapshot then ignore. 874 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 875 return; 876 } 877 mCaptureStartTime = System.currentTimeMillis(); 878 mPostViewPictureCallbackTime = 0; 879 880 mStatus = SNAPSHOT_IN_PROGRESS; 881 882 mImageCapture.initiate(); 883 } 884 885 private void clearLastData() { 886 mCaptureOnlyData = null; 887 } 888 } 889 890 private boolean saveDataToFile(String filePath, byte[] data) { 891 FileOutputStream f = null; 892 try { 893 f = new FileOutputStream(filePath); 894 f.write(data); 895 } catch (IOException e) { 896 return false; 897 } finally { 898 MenuHelper.closeSilently(f); 899 } 900 return true; 901 } 902 903 private void setLastPictureThumb(byte[] data, int degree, Uri uri) { 904 BitmapFactory.Options options = new BitmapFactory.Options(); 905 options.inSampleSize = 16; 906 Bitmap lastPictureThumb = 907 BitmapFactory.decodeByteArray(data, 0, data.length, options); 908 lastPictureThumb = Util.rotate(lastPictureThumb, degree); 909 mThumbController.setData(uri, lastPictureThumb); 910 } 911 912 private String createName(long dateTaken) { 913 Date date = new Date(dateTaken); 914 SimpleDateFormat dateFormat = new SimpleDateFormat( 915 getString(R.string.image_file_name_format)); 916 917 return dateFormat.format(date); 918 } 919 920 @Override 921 public void onCreate(Bundle icicle) { 922 super.onCreate(icicle); 923 924 setContentView(R.layout.camera); 925 mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview); 926 927 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 928 CameraSettings.upgradePreferences(mPreferences); 929 mQuickCapture = getQuickCaptureSettings(); 930 931 /* 932 * To reduce startup time, we start the preview in another thread. 933 * We make sure the preview is started at the end of onCreate. 934 */ 935 Thread startPreviewThread = new Thread(new Runnable() { 936 public void run() { 937 try { 938 mStartPreviewFail = false; 939 startPreview(); 940 } catch (CameraHardwareException e) { 941 // In eng build, we throw the exception so that test tool 942 // can detect it and report it 943 if ("eng".equals(Build.TYPE)) { 944 throw new RuntimeException(e); 945 } 946 mStartPreviewFail = true; 947 } 948 } 949 }); 950 startPreviewThread.start(); 951 952 // don't set mSurfaceHolder here. We have it set ONLY within 953 // surfaceChanged / surfaceDestroyed, other parts of the code 954 // assume that when it is set, the surface is also set. 955 SurfaceHolder holder = mSurfaceView.getHolder(); 956 holder.addCallback(this); 957 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 958 959 mIsImageCaptureIntent = isImageCaptureIntent(); 960 if (mIsImageCaptureIntent) { 961 setupCaptureParams(); 962 } 963 964 LayoutInflater inflater = getLayoutInflater(); 965 966 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 967 if (mIsImageCaptureIntent) { 968 View controlBar = inflater.inflate( 969 R.layout.attach_camera_control, rootView); 970 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 971 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 972 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 973 } else { 974 inflater.inflate(R.layout.camera_control, rootView); 975 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 976 mSwitcher.setOnSwitchListener(this); 977 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 978 } 979 980 // Make sure preview is started. 981 try { 982 startPreviewThread.join(); 983 if (mStartPreviewFail) { 984 showCameraErrorAndFinish(); 985 return; 986 } 987 } catch (InterruptedException ex) { 988 // ignore 989 } 990 } 991 992 private void setOrientationIndicator(int degree) { 993 ((RotateImageView) findViewById( 994 R.id.review_thumbnail)).setDegree(degree); 995 ((RotateImageView) findViewById( 996 R.id.camera_switch_icon)).setDegree(degree); 997 ((RotateImageView) findViewById( 998 R.id.video_switch_icon)).setDegree(degree); 999 } 1000 1001 @Override 1002 public void onStart() { 1003 super.onStart(); 1004 if (!mIsImageCaptureIntent) { 1005 mSwitcher.setSwitch(SWITCH_CAMERA); 1006 } 1007 } 1008 1009 @Override 1010 public void onStop() { 1011 super.onStop(); 1012 if (mMediaProviderClient != null) { 1013 mMediaProviderClient.release(); 1014 mMediaProviderClient = null; 1015 } 1016 } 1017 1018 private void checkStorage() { 1019 if (ImageManager.isMediaScannerScanning(getContentResolver())) { 1020 mPicturesRemaining = MenuHelper.NO_STORAGE_ERROR; 1021 } else { 1022 calculatePicturesRemaining(); 1023 } 1024 updateStorageHint(mPicturesRemaining); 1025 } 1026 1027 private void restorePreferences() { 1028 // Unregister the listener since "upgrade preference" will change 1029 // a bunch of preferences. We can handle them with one 1030 // setCameraParameters(). 1031 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 1032 mSettings.clearSettings(); 1033 CameraSettings.upgradePreferences(mPreferences); 1034 setCameraParameters(); 1035 mPreferences.registerOnSharedPreferenceChangeListener(this); 1036 } 1037 1038 public void onClick(View v) { 1039 switch (v.getId()) { 1040 case R.id.btn_retake: 1041 hidePostCaptureAlert(); 1042 restartPreview(); 1043 break; 1044 case R.id.review_thumbnail: 1045 if (isCameraIdle()) { 1046 viewLastImage(); 1047 } 1048 break; 1049 case R.id.btn_done: 1050 doAttach(); 1051 break; 1052 case R.id.btn_cancel: 1053 doCancel(); 1054 } 1055 } 1056 1057 private Bitmap createCaptureBitmap(byte[] data) { 1058 // This is really stupid...we just want to read the orientation in 1059 // the jpeg header. 1060 String filepath = ImageManager.getTempJpegPath(); 1061 int degree = 0; 1062 if (saveDataToFile(filepath, data)) { 1063 degree = ImageManager.getExifOrientation(filepath); 1064 new File(filepath).delete(); 1065 } 1066 1067 // Limit to 50k pixels so we can return it in the intent. 1068 Bitmap bitmap = Util.makeBitmap(data, 50 * 1024); 1069 bitmap = Util.rotate(bitmap, degree); 1070 return bitmap; 1071 } 1072 1073 private void doAttach() { 1074 if (mPausing) { 1075 return; 1076 } 1077 1078 byte[] data = mImageCapture.getLastCaptureData(); 1079 1080 if (mCropValue == null) { 1081 // First handle the no crop case -- just return the value. If the 1082 // caller specifies a "save uri" then write the data to it's 1083 // stream. Otherwise, pass back a scaled down version of the bitmap 1084 // directly in the extras. 1085 if (mSaveUri != null) { 1086 OutputStream outputStream = null; 1087 try { 1088 outputStream = mContentResolver.openOutputStream(mSaveUri); 1089 outputStream.write(data); 1090 outputStream.close(); 1091 1092 setResult(RESULT_OK); 1093 finish(); 1094 } catch (IOException ex) { 1095 // ignore exception 1096 } finally { 1097 Util.closeSilently(outputStream); 1098 } 1099 } else { 1100 Bitmap bitmap = createCaptureBitmap(data); 1101 setResult(RESULT_OK, 1102 new Intent("inline-data").putExtra("data", bitmap)); 1103 finish(); 1104 } 1105 } else { 1106 // Save the image to a temp file and invoke the cropper 1107 Uri tempUri = null; 1108 FileOutputStream tempStream = null; 1109 try { 1110 File path = getFileStreamPath(sTempCropFilename); 1111 path.delete(); 1112 tempStream = openFileOutput(sTempCropFilename, 0); 1113 tempStream.write(data); 1114 tempStream.close(); 1115 tempUri = Uri.fromFile(path); 1116 } catch (FileNotFoundException ex) { 1117 setResult(Activity.RESULT_CANCELED); 1118 finish(); 1119 return; 1120 } catch (IOException ex) { 1121 setResult(Activity.RESULT_CANCELED); 1122 finish(); 1123 return; 1124 } finally { 1125 Util.closeSilently(tempStream); 1126 } 1127 1128 Bundle newExtras = new Bundle(); 1129 if (mCropValue.equals("circle")) { 1130 newExtras.putString("circleCrop", "true"); 1131 } 1132 if (mSaveUri != null) { 1133 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 1134 } else { 1135 newExtras.putBoolean("return-data", true); 1136 } 1137 1138 Intent cropIntent = new Intent("com.android.camera.action.CROP"); 1139 1140 cropIntent.setData(tempUri); 1141 cropIntent.putExtras(newExtras); 1142 1143 startActivityForResult(cropIntent, CROP_MSG); 1144 } 1145 } 1146 1147 private void doCancel() { 1148 setResult(RESULT_CANCELED, new Intent()); 1149 finish(); 1150 } 1151 1152 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1153 if (mPausing) { 1154 return; 1155 } 1156 switch (button.getId()) { 1157 case R.id.shutter_button: 1158 doFocus(pressed); 1159 break; 1160 } 1161 } 1162 1163 public void onShutterButtonClick(ShutterButton button) { 1164 if (mPausing) { 1165 return; 1166 } 1167 switch (button.getId()) { 1168 case R.id.shutter_button: 1169 doSnap(); 1170 break; 1171 } 1172 } 1173 1174 private OnScreenHint mStorageHint; 1175 1176 private void updateStorageHint(int remaining) { 1177 String noStorageText = null; 1178 1179 if (remaining == MenuHelper.NO_STORAGE_ERROR) { 1180 String state = Environment.getExternalStorageState(); 1181 if (state == Environment.MEDIA_CHECKING || 1182 ImageManager.isMediaScannerScanning(getContentResolver())) { 1183 noStorageText = getString(R.string.preparing_sd); 1184 } else { 1185 noStorageText = getString(R.string.no_storage); 1186 } 1187 } else if (remaining < 1) { 1188 noStorageText = getString(R.string.not_enough_space); 1189 } 1190 1191 if (noStorageText != null) { 1192 if (mStorageHint == null) { 1193 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1194 } else { 1195 mStorageHint.setText(noStorageText); 1196 } 1197 mStorageHint.show(); 1198 } else if (mStorageHint != null) { 1199 mStorageHint.cancel(); 1200 mStorageHint = null; 1201 } 1202 } 1203 1204 private void installIntentFilter() { 1205 // install an intent filter to receive SD card related events. 1206 IntentFilter intentFilter = 1207 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1208 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1209 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED); 1210 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1211 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1212 intentFilter.addDataScheme("file"); 1213 registerReceiver(mReceiver, intentFilter); 1214 mDidRegister = true; 1215 } 1216 1217 private void initializeFocusTone() { 1218 // Initialize focus tone generator. 1219 try { 1220 mFocusToneGenerator = new ToneGenerator( 1221 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1222 } catch (Throwable ex) { 1223 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1224 mFocusToneGenerator = null; 1225 } 1226 } 1227 1228 private void initializeScreenBrightness() { 1229 Window win = getWindow(); 1230 // Overright the brightness settings if it is automatic 1231 int mode = Settings.System.getInt( 1232 getContentResolver(), 1233 Settings.System.SCREEN_BRIGHTNESS_MODE, 1234 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); 1235 if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) { 1236 WindowManager.LayoutParams winParams = win.getAttributes(); 1237 winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS; 1238 win.setAttributes(winParams); 1239 } 1240 } 1241 1242 @Override 1243 protected void onResume() { 1244 super.onResume(); 1245 mPreferences.registerOnSharedPreferenceChangeListener(this); 1246 1247 mPausing = false; 1248 mJpegPictureCallbackTime = 0; 1249 mZoomValue = 0; 1250 mImageCapture = new ImageCapture(); 1251 1252 // Start the preview if it is not started. 1253 if (!mPreviewing && !mStartPreviewFail) { 1254 try { 1255 startPreview(); 1256 } catch (CameraHardwareException e) { 1257 showCameraErrorAndFinish(); 1258 return; 1259 } 1260 } 1261 1262 if (mSurfaceHolder != null) { 1263 // If first time initialization is not finished, put it in the 1264 // message queue. 1265 if (!mFirstTimeInitialized) { 1266 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1267 } else { 1268 initializeSecondTime(); 1269 } 1270 } 1271 keepScreenOnAwhile(); 1272 } 1273 1274 private static ImageManager.DataLocation dataLocation() { 1275 return ImageManager.DataLocation.EXTERNAL; 1276 } 1277 1278 @Override 1279 protected void onPause() { 1280 mPausing = true; 1281 stopPreview(); 1282 // Close the camera now because other activities may need to use it. 1283 closeCamera(); 1284 resetScreenOn(); 1285 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 1286 1287 if (mSettings != null && mSettings.isVisible()) { 1288 mSettings.setVisible(false); 1289 } 1290 1291 if (mFirstTimeInitialized) { 1292 mOrientationListener.disable(); 1293 mHeadUpDisplay.setGpsHasSignal(false); 1294 if (!mIsImageCaptureIntent) { 1295 mThumbController.storeData( 1296 ImageManager.getLastImageThumbPath()); 1297 } 1298 hidePostCaptureAlert(); 1299 } 1300 1301 if (mDidRegister) { 1302 unregisterReceiver(mReceiver); 1303 mDidRegister = false; 1304 } 1305 stopReceivingLocationUpdates(); 1306 1307 if (mFocusToneGenerator != null) { 1308 mFocusToneGenerator.release(); 1309 mFocusToneGenerator = null; 1310 } 1311 1312 if (mStorageHint != null) { 1313 mStorageHint.cancel(); 1314 mStorageHint = null; 1315 } 1316 1317 // If we are in an image capture intent and has taken 1318 // a picture, we just clear it in onPause. 1319 mImageCapture.clearLastData(); 1320 mImageCapture = null; 1321 1322 // This is necessary to make the ZoomButtonsController unregister 1323 // its configuration change receiver. 1324 if (mZoomButtons != null) { 1325 mZoomButtons.setVisible(false); 1326 } 1327 1328 // Remove the messages in the event queue. 1329 mHandler.removeMessages(RESTART_PREVIEW); 1330 mHandler.removeMessages(FIRST_TIME_INIT); 1331 1332 super.onPause(); 1333 } 1334 1335 @Override 1336 protected void onActivityResult( 1337 int requestCode, int resultCode, Intent data) { 1338 switch (requestCode) { 1339 case CROP_MSG: { 1340 Intent intent = new Intent(); 1341 if (data != null) { 1342 Bundle extras = data.getExtras(); 1343 if (extras != null) { 1344 intent.putExtras(extras); 1345 } 1346 } 1347 setResult(resultCode, intent); 1348 finish(); 1349 1350 File path = getFileStreamPath(sTempCropFilename); 1351 path.delete(); 1352 1353 break; 1354 } 1355 } 1356 } 1357 1358 private boolean canTakePicture() { 1359 return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0); 1360 } 1361 1362 private void autoFocus() { 1363 // Initiate autofocus only when preview is started and snapshot is not 1364 // in progress. 1365 if (canTakePicture()) { 1366 Log.v(TAG, "Start autofocus."); 1367 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1368 mFocusStartTime = System.currentTimeMillis(); 1369 mFocusState = FOCUSING; 1370 updateFocusIndicator(); 1371 mCameraDevice.autoFocus(mAutoFocusCallback); 1372 } 1373 } 1374 1375 private void cancelAutoFocus() { 1376 // User releases half-pressed focus key. 1377 if (mFocusState == FOCUSING || mFocusState == FOCUS_SUCCESS 1378 || mFocusState == FOCUS_FAIL) { 1379 Log.v(TAG, "Cancel autofocus."); 1380 mCameraDevice.cancelAutoFocus(); 1381 } 1382 if (mFocusState != FOCUSING_SNAP_ON_FINISH) { 1383 clearFocusState(); 1384 } 1385 } 1386 1387 private void clearFocusState() { 1388 mFocusState = FOCUS_NOT_STARTED; 1389 updateFocusIndicator(); 1390 } 1391 1392 private void updateFocusIndicator() { 1393 if (mFocusRectangle == null) return; 1394 1395 if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) { 1396 mFocusRectangle.showStart(); 1397 } else if (mFocusState == FOCUS_SUCCESS) { 1398 mFocusRectangle.showSuccess(); 1399 } else if (mFocusState == FOCUS_FAIL) { 1400 mFocusRectangle.showFail(); 1401 } else { 1402 mFocusRectangle.clear(); 1403 } 1404 } 1405 1406 @Override 1407 public void onBackPressed() { 1408 if (!isCameraIdle()) { 1409 // ignore backs while we're taking a picture 1410 return; 1411 } 1412 super.onBackPressed(); 1413 } 1414 1415 @Override 1416 public boolean onKeyDown(int keyCode, KeyEvent event) { 1417 switch (keyCode) { 1418 case KeyEvent.KEYCODE_FOCUS: 1419 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1420 doFocus(true); 1421 } 1422 return true; 1423 case KeyEvent.KEYCODE_CAMERA: 1424 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1425 doSnap(); 1426 } 1427 return true; 1428 case KeyEvent.KEYCODE_DPAD_CENTER: 1429 // If we get a dpad center event without any focused view, move 1430 // the focus to the shutter button and press it. 1431 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1432 // Start auto-focus immediately to reduce shutter lag. After 1433 // the shutter button gets the focus, doFocus() will be 1434 // called again but it is fine. 1435 doFocus(true); 1436 if (mShutterButton.isInTouchMode()) { 1437 mShutterButton.requestFocusFromTouch(); 1438 } else { 1439 mShutterButton.requestFocus(); 1440 } 1441 mShutterButton.setPressed(true); 1442 } 1443 return true; 1444 } 1445 1446 return super.onKeyDown(keyCode, event); 1447 } 1448 1449 @Override 1450 public boolean onKeyUp(int keyCode, KeyEvent event) { 1451 switch (keyCode) { 1452 case KeyEvent.KEYCODE_FOCUS: 1453 if (mFirstTimeInitialized) { 1454 doFocus(false); 1455 } 1456 return true; 1457 } 1458 return super.onKeyUp(keyCode, event); 1459 } 1460 1461 private void doSnap() { 1462 Log.v(TAG, "doSnap: mFocusState=" + mFocusState); 1463 // If the user has half-pressed the shutter and focus is completed, we 1464 // can take the photo right away. If the focus mode is infinity, we can 1465 // also take the photo. 1466 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1467 || (mFocusState == FOCUS_SUCCESS 1468 || mFocusState == FOCUS_FAIL)) { 1469 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1470 mImageCapture.onSnap(); 1471 } else if (mFocusState == FOCUSING) { 1472 // Half pressing the shutter (i.e. the focus button event) will 1473 // already have requested AF for us, so just request capture on 1474 // focus here. 1475 mFocusState = FOCUSING_SNAP_ON_FINISH; 1476 } else if (mFocusState == FOCUS_NOT_STARTED) { 1477 // Focus key down event is dropped for some reasons. Just ignore. 1478 } 1479 } 1480 1481 private void doFocus(boolean pressed) { 1482 // Do the focus if the mode is not infinity. 1483 if (!mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)) { 1484 if (pressed) { // Focus key down. 1485 autoFocus(); 1486 } else { // Focus key up. 1487 cancelAutoFocus(); 1488 } 1489 } 1490 } 1491 1492 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1493 // Make sure we have a surface in the holder before proceeding. 1494 if (holder.getSurface() == null) { 1495 Log.d(TAG, "holder.getSurface() == null"); 1496 return; 1497 } 1498 1499 // We need to save the holder for later use, even when the mCameraDevice 1500 // is null. This could happen if onResume() is invoked after this 1501 // function. 1502 mSurfaceHolder = holder; 1503 1504 // The mCameraDevice will be null if it fails to connect to the camera 1505 // hardware. In this case we will show a dialog and then finish the 1506 // activity, so it's OK to ignore it. 1507 if (mCameraDevice == null) return; 1508 1509 // Sometimes surfaceChanged is called after onPause or before onResume. 1510 // Ignore it. 1511 if (mPausing || isFinishing()) return; 1512 1513 if (mPreviewing && holder.isCreating()) { 1514 // Set preview display if the surface is being created and preview 1515 // was already started. That means preview display was set to null 1516 // and we need to set it now. 1517 setPreviewDisplay(holder); 1518 } else { 1519 // 1. Restart the preview if the size of surface was changed. The 1520 // framework may not support changing preview display on the fly. 1521 // 2. Start the preview now if surface was destroyed and preview 1522 // stopped. 1523 restartPreview(); 1524 } 1525 1526 // If first time initialization is not finished, send a message to do 1527 // it later. We want to finish surfaceChanged as soon as possible to let 1528 // user see preview first. 1529 if (!mFirstTimeInitialized) { 1530 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1531 } else { 1532 initializeSecondTime(); 1533 } 1534 } 1535 1536 public void surfaceCreated(SurfaceHolder holder) { 1537 } 1538 1539 public void surfaceDestroyed(SurfaceHolder holder) { 1540 stopPreview(); 1541 mSurfaceHolder = null; 1542 } 1543 1544 private void closeCamera() { 1545 if (mCameraDevice != null) { 1546 CameraHolder.instance().release(); 1547 if (mZoomButtons != null) mCameraDevice.setZoomCallback(null); 1548 mCameraDevice = null; 1549 mPreviewing = false; 1550 } 1551 } 1552 1553 private void ensureCameraDevice() throws CameraHardwareException { 1554 if (mCameraDevice == null) { 1555 mCameraDevice = CameraHolder.instance().open(); 1556 mInitialParams = mCameraDevice.getParameters(); 1557 } 1558 } 1559 1560 private void updateLastImage() { 1561 IImageList list = ImageManager.makeImageList( 1562 mContentResolver, 1563 dataLocation(), 1564 ImageManager.INCLUDE_IMAGES, 1565 ImageManager.SORT_ASCENDING, 1566 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1567 int count = list.getCount(); 1568 if (count > 0) { 1569 IImage image = list.getImageAt(count - 1); 1570 Uri uri = image.fullSizeImageUri(); 1571 mThumbController.setData(uri, image.miniThumbBitmap()); 1572 } else { 1573 mThumbController.setData(null, null); 1574 } 1575 list.close(); 1576 } 1577 1578 private void showCameraErrorAndFinish() { 1579 Resources ress = getResources(); 1580 Util.showFatalErrorAndFinish(Camera.this, 1581 ress.getString(R.string.camera_error_title), 1582 ress.getString(R.string.cannot_connect_camera)); 1583 } 1584 1585 private void restartPreview() { 1586 try { 1587 startPreview(); 1588 } catch (CameraHardwareException e) { 1589 showCameraErrorAndFinish(); 1590 return; 1591 } 1592 } 1593 1594 private void setPreviewDisplay(SurfaceHolder holder) { 1595 try { 1596 mCameraDevice.setPreviewDisplay(holder); 1597 } catch (Throwable ex) { 1598 closeCamera(); 1599 throw new RuntimeException("setPreviewDisplay failed", ex); 1600 } 1601 } 1602 1603 private void startPreview() throws CameraHardwareException { 1604 if (mPausing || isFinishing()) return; 1605 1606 ensureCameraDevice(); 1607 1608 // If we're previewing already, stop the preview first (this will blank 1609 // the screen). 1610 if (mPreviewing) stopPreview(); 1611 1612 setPreviewDisplay(mSurfaceHolder); 1613 setCameraParameters(); 1614 1615 final long wallTimeStart = SystemClock.elapsedRealtime(); 1616 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1617 1618 // Set one shot preview callback for latency measurement. 1619 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1620 mCameraDevice.setErrorCallback(mErrorCallback); 1621 1622 try { 1623 Log.v(TAG, "startPreview"); 1624 mCameraDevice.startPreview(); 1625 } catch (Throwable ex) { 1626 closeCamera(); 1627 throw new RuntimeException("startPreview failed", ex); 1628 } 1629 mPreviewing = true; 1630 mZooming = false; 1631 mStatus = IDLE; 1632 1633 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1634 long wallTimeEnd = SystemClock.elapsedRealtime(); 1635 if ((wallTimeEnd - wallTimeStart) > 3000) { 1636 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1637 + " ms. Thread time was" 1638 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1639 } 1640 } 1641 1642 private void stopPreview() { 1643 if (mCameraDevice != null && mPreviewing) { 1644 Log.v(TAG, "stopPreview"); 1645 mCameraDevice.stopPreview(); 1646 } 1647 mPreviewing = false; 1648 // If auto focus was in progress, it would have been canceled. 1649 clearFocusState(); 1650 } 1651 1652 private Size getOptimalPreviewSize(List<Size> sizes, double targetRatio) { 1653 final double ASPECT_TOLERANCE = 0.05; 1654 if (sizes == null) return null; 1655 1656 Size optimalSize = null; 1657 double minDiff = Double.MAX_VALUE; 1658 1659 // Because of bugs of overlay and layout, we sometimes will try to 1660 // layout the viewfinder in the portrait orientation and thus get the 1661 // wrong size of mSurfaceView. When we change the preview size, the 1662 // new overlay will be created before the old one closed, which causes 1663 // an exception. For now, just get the screen size 1664 1665 Display display = getWindowManager().getDefaultDisplay(); 1666 int targetHeight = Math.min(display.getHeight(), display.getWidth()); 1667 1668 if (targetHeight <= 0) { 1669 // We don't know the size of SurefaceView, use screen height 1670 WindowManager windowManager = (WindowManager) 1671 getSystemService(Context.WINDOW_SERVICE); 1672 targetHeight = windowManager.getDefaultDisplay().getHeight(); 1673 } 1674 1675 // Try to find an size match aspect ratio and size 1676 for (Size size : sizes) { 1677 double ratio = (double) size.width / size.height; 1678 if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 1679 if (Math.abs(size.height - targetHeight) < minDiff) { 1680 optimalSize = size; 1681 minDiff = Math.abs(size.height - targetHeight); 1682 } 1683 } 1684 1685 // Cannot find the one match the aspect ratio, ignore the requirement 1686 if (optimalSize == null) { 1687 Log.v(TAG, "No preview size match the aspect ratio"); 1688 minDiff = Double.MAX_VALUE; 1689 for (Size size : sizes) { 1690 if (Math.abs(size.height - targetHeight) < minDiff) { 1691 optimalSize = size; 1692 minDiff = Math.abs(size.height - targetHeight); 1693 } 1694 } 1695 } 1696 return optimalSize; 1697 } 1698 1699 private static boolean isSupported(String value, List<String> supported) { 1700 return supported == null ? false : supported.indexOf(value) >= 0; 1701 } 1702 1703 private void setCameraParameters() { 1704 mParameters = mCameraDevice.getParameters(); 1705 1706 // Since change scene mode may change supported values, 1707 // Set scene mode first, 1708 String sceneMode = mPreferences.getString( 1709 CameraSettings.KEY_SCENE_MODE, 1710 getString(R.string.pref_camera_scenemode_default)); 1711 if (isSupported(sceneMode, mParameters.getSupportedSceneModes())) { 1712 if (!mParameters.getSceneMode().equals(sceneMode)) { 1713 mParameters.setSceneMode(sceneMode); 1714 mCameraDevice.setParameters(mParameters); 1715 1716 // Setting scene mode will change the settings of flash mode, 1717 // white balance, and focus mode. Here we read back the 1718 // parameters, so we can know those settings. 1719 mParameters = mCameraDevice.getParameters(); 1720 } 1721 } else { 1722 sceneMode = mParameters.getSceneMode(); 1723 if (sceneMode == null) { 1724 sceneMode = Parameters.SCENE_MODE_AUTO; 1725 } 1726 } 1727 1728 // Reset preview frame rate to the maximum because it may be lowered by 1729 // video camera application. 1730 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1731 if (frameRates != null) { 1732 Integer max = Collections.max(frameRates); 1733 mParameters.setPreviewFrameRate(max); 1734 } 1735 1736 // Set picture size. 1737 String pictureSize = mPreferences.getString( 1738 CameraSettings.KEY_PICTURE_SIZE, null); 1739 if (pictureSize == null) { 1740 CameraSettings.initialCameraPictureSize(this, mParameters); 1741 } else { 1742 List<Size> supported = mParameters.getSupportedPictureSizes(); 1743 CameraSettings.setCameraPictureSize( 1744 pictureSize, supported, mParameters); 1745 } 1746 1747 // Set the preview frame aspect ratio according to the picture size. 1748 Size size = mParameters.getPictureSize(); 1749 PreviewFrameLayout frameLayout = 1750 (PreviewFrameLayout) findViewById(R.id.frame_layout); 1751 frameLayout.setAspectRatio((double) size.width / size.height); 1752 1753 // Set a preview size that is closest to the viewfinder height and has 1754 // the right aspect ratio. 1755 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1756 Size optimalSize = getOptimalPreviewSize( 1757 sizes, (double) size.width / size.height); 1758 if (optimalSize != null) { 1759 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1760 } 1761 1762 // Set JPEG quality. 1763 String jpegQuality = mPreferences.getString( 1764 CameraSettings.KEY_JPEG_QUALITY, 1765 getString(R.string.pref_camera_jpegquality_default)); 1766 mParameters.setJpegQuality(getQualityNumber(jpegQuality)); 1767 1768 // Set zoom. 1769 if (mParameters.isZoomSupported()) { 1770 mParameters.setZoom(mZoomValue); 1771 } 1772 1773 // For the following settings, we need to check if the settings are 1774 // still supported by latest driver, if not, ignore the settings. 1775 1776 // Set color effect parameter. 1777 String colorEffect = mPreferences.getString( 1778 CameraSettings.KEY_COLOR_EFFECT, 1779 getString(R.string.pref_camera_coloreffect_default)); 1780 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 1781 mParameters.setColorEffect(colorEffect); 1782 } 1783 1784 // If scene mode is set, we cannot set flash mode, white balance, and 1785 // focus mode, instead, we read it from driver 1786 if (!Parameters.SCENE_MODE_AUTO.equals(sceneMode)) { 1787 final String flashMode = mParameters.getFlashMode(); 1788 final String whiteBalance = mParameters.getWhiteBalance(); 1789 mFocusMode = mParameters.getFocusMode(); 1790 1791 if (mRootView != null) { 1792 final String finalFlashMode = flashMode; 1793 mRootView.queueEvent(new Runnable() { 1794 public void run() { 1795 mHeadUpDisplay.overrideSettings( 1796 CameraSettings.KEY_FLASH_MODE, flashMode); 1797 mHeadUpDisplay.overrideSettings( 1798 CameraSettings.KEY_WHITE_BALANCE, whiteBalance); 1799 mHeadUpDisplay.overrideSettings( 1800 CameraSettings.KEY_FOCUS_MODE, mFocusMode); 1801 }}); 1802 } 1803 } else { 1804 if (mRootView != null) { 1805 mRootView.queueEvent(new Runnable() { 1806 public void run() { 1807 mHeadUpDisplay.overrideSettings( 1808 CameraSettings.KEY_FLASH_MODE, null); 1809 mHeadUpDisplay.overrideSettings( 1810 CameraSettings.KEY_FOCUS_MODE, null); 1811 mHeadUpDisplay.overrideSettings( 1812 CameraSettings.KEY_WHITE_BALANCE, null); 1813 }}); 1814 } 1815 1816 // Set flash mode. 1817 String flashMode = mPreferences.getString( 1818 CameraSettings.KEY_FLASH_MODE, 1819 getString(R.string.pref_camera_flashmode_default)); 1820 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1821 if (isSupported(flashMode, supportedFlash)) { 1822 mParameters.setFlashMode(flashMode); 1823 } else { 1824 flashMode = mParameters.getFlashMode(); 1825 if (flashMode == null) { 1826 flashMode = getString( 1827 R.string.pref_camera_flashmode_no_flash); 1828 } 1829 } 1830 1831 // Set white balance parameter. 1832 String whiteBalance = mPreferences.getString( 1833 CameraSettings.KEY_WHITE_BALANCE, 1834 getString(R.string.pref_camera_whitebalance_default)); 1835 if (isSupported(whiteBalance, 1836 mParameters.getSupportedWhiteBalance())) { 1837 mParameters.setWhiteBalance(whiteBalance); 1838 } else { 1839 whiteBalance = mParameters.getWhiteBalance(); 1840 if (whiteBalance == null) { 1841 whiteBalance = Parameters.WHITE_BALANCE_AUTO; 1842 } 1843 } 1844 1845 // Set focus mode. 1846 mFocusMode = mPreferences.getString( 1847 CameraSettings.KEY_FOCUS_MODE, 1848 getString(R.string.pref_camera_focusmode_default)); 1849 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 1850 mParameters.setFocusMode(mFocusMode); 1851 } else { 1852 mFocusMode = mParameters.getFocusMode(); 1853 if (mFocusMode == null) { 1854 mFocusMode = Parameters.FOCUS_MODE_AUTO; 1855 } 1856 } 1857 1858 mCameraDevice.setParameters(mParameters); 1859 } 1860 } 1861 1862 private void gotoGallery() { 1863 MenuHelper.gotoCameraImageGallery(this); 1864 } 1865 1866 private void viewLastImage() { 1867 if (mThumbController.isUriValid()) { 1868 Intent intent = new Intent(Intent.ACTION_VIEW, mThumbController.getUri()); 1869 try { 1870 startActivity(intent); 1871 } catch (ActivityNotFoundException ex) { 1872 Log.e(TAG, "review image fail", ex); 1873 } 1874 } else { 1875 Log.e(TAG, "Can't view last image."); 1876 } 1877 } 1878 1879 private void startReceivingLocationUpdates() { 1880 if (mLocationManager != null) { 1881 try { 1882 mLocationManager.requestLocationUpdates( 1883 LocationManager.NETWORK_PROVIDER, 1884 1000, 1885 0F, 1886 mLocationListeners[1]); 1887 } catch (java.lang.SecurityException ex) { 1888 Log.i(TAG, "fail to request location update, ignore", ex); 1889 } catch (IllegalArgumentException ex) { 1890 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1891 } 1892 try { 1893 mLocationManager.requestLocationUpdates( 1894 LocationManager.GPS_PROVIDER, 1895 1000, 1896 0F, 1897 mLocationListeners[0]); 1898 } catch (java.lang.SecurityException ex) { 1899 Log.i(TAG, "fail to request location update, ignore", ex); 1900 } catch (IllegalArgumentException ex) { 1901 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1902 } 1903 } 1904 } 1905 1906 private void stopReceivingLocationUpdates() { 1907 if (mLocationManager != null) { 1908 for (int i = 0; i < mLocationListeners.length; i++) { 1909 try { 1910 mLocationManager.removeUpdates(mLocationListeners[i]); 1911 } catch (Exception ex) { 1912 Log.i(TAG, "fail to remove location listners, ignore", ex); 1913 } 1914 } 1915 } 1916 } 1917 1918 private Location getCurrentLocation() { 1919 // go in best to worst order 1920 for (int i = 0; i < mLocationListeners.length; i++) { 1921 Location l = mLocationListeners[i].current(); 1922 if (l != null) return l; 1923 } 1924 return null; 1925 } 1926 1927 private boolean isCameraIdle() { 1928 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1929 } 1930 1931 private boolean isImageCaptureIntent() { 1932 String action = getIntent().getAction(); 1933 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1934 } 1935 1936 private void setupCaptureParams() { 1937 Bundle myExtras = getIntent().getExtras(); 1938 if (myExtras != null) { 1939 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1940 mCropValue = myExtras.getString("crop"); 1941 } 1942 } 1943 1944 private void showPostCaptureAlert() { 1945 if (mIsImageCaptureIntent) { 1946 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1947 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1948 for (int id : pickIds) { 1949 View button = findViewById(id); 1950 ((View) button.getParent()).setVisibility(View.VISIBLE); 1951 } 1952 } 1953 } 1954 1955 private void hidePostCaptureAlert() { 1956 if (mIsImageCaptureIntent) { 1957 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1958 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1959 for (int id : pickIds) { 1960 View button = findViewById(id); 1961 ((View) button.getParent()).setVisibility(View.GONE); 1962 } 1963 } 1964 } 1965 1966 private int calculatePicturesRemaining() { 1967 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1968 return mPicturesRemaining; 1969 } 1970 1971 @Override 1972 public boolean onPrepareOptionsMenu(Menu menu) { 1973 super.onPrepareOptionsMenu(menu); 1974 // Only show the menu when camera is idle. 1975 for (int i = 0; i < menu.size(); i++) { 1976 menu.getItem(i).setVisible(isCameraIdle()); 1977 } 1978 1979 return true; 1980 } 1981 1982 @Override 1983 public boolean onCreateOptionsMenu(Menu menu) { 1984 super.onCreateOptionsMenu(menu); 1985 1986 if (mIsImageCaptureIntent) { 1987 // No options menu for attach mode. 1988 return false; 1989 } else { 1990 addBaseMenuItems(menu); 1991 } 1992 return true; 1993 } 1994 1995 private void addBaseMenuItems(Menu menu) { 1996 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 1997 MenuHelper.POSITION_GOTO_GALLERY, 1998 R.string.camera_gallery_photos_text) 1999 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 2000 public boolean onMenuItemClick(MenuItem item) { 2001 gotoGallery(); 2002 return true; 2003 } 2004 }); 2005 gallery.setIcon(android.R.drawable.ic_menu_gallery); 2006 mGalleryItems.add(gallery); 2007 } 2008 2009 public boolean onSwitchChanged(Switcher source, boolean onOff) { 2010 if (onOff == SWITCH_VIDEO) { 2011 if (!isCameraIdle()) return false; 2012 MenuHelper.gotoVideoMode(this); 2013 finish(); 2014 } 2015 return true; 2016 } 2017 2018 public void onSharedPreferenceChanged( 2019 final SharedPreferences preferences, final String key) { 2020 Runnable runnable = new Runnable() { 2021 public void run() { 2022 // ignore the events after "onPause()" 2023 if (mPausing) return; 2024 Log.v(TAG, "call()"); 2025 2026 if (CameraSettings.KEY_RECORD_LOCATION.equals(key)) { 2027 mRecordLocation = RecordLocationPreference.get( 2028 preferences, getContentResolver()); 2029 if (mRecordLocation) { 2030 startReceivingLocationUpdates(); 2031 } else { 2032 stopReceivingLocationUpdates(); 2033 } 2034 } else if (CameraSettings.KEY_QUICK_CAPTURE.equals(key)) { 2035 mQuickCapture = getQuickCaptureSettings(); 2036 } else { 2037 // All preferences except RECORD_LOCATION are camera 2038 // parameters. Call setCameraParameters to take effect now. 2039 setCameraParameters(); 2040 } 2041 Log.v(TAG, "call() end"); 2042 } 2043 }; 2044 runOnUiThread(runnable); 2045 } 2046 2047 private boolean getQuickCaptureSettings() { 2048 String value = mPreferences.getString( 2049 CameraSettings.KEY_QUICK_CAPTURE, 2050 getString(R.string.pref_camera_quickcapture_default)); 2051 return CameraSettings.QUICK_CAPTURE_ON.equals(value); 2052 } 2053 2054 @Override 2055 public void onUserInteraction() { 2056 super.onUserInteraction(); 2057 keepScreenOnAwhile(); 2058 } 2059 2060 private void resetScreenOn() { 2061 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2062 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2063 } 2064 2065 private void keepScreenOnAwhile() { 2066 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2067 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2068 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 2069 } 2070 2071 private static String[] mQualityStrings = {"superfine", "fine", "normal"}; 2072 private static int[] mQualityNumbers = CameraProfile.getImageEncodingQualityLevels(); 2073 private static int DEFAULT_QUALITY = 85; 2074 2075 // Translate from a quality string to a quality number using the system 2076 // properties. 2077 private static int getQualityNumber(String jpegQuality) { 2078 // Find the index of the input string 2079 int index = Util.indexOf(mQualityStrings, jpegQuality); 2080 2081 if (index == -1 || index > mQualityNumbers.length - 1) { 2082 return DEFAULT_QUALITY; 2083 } 2084 return mQualityNumbers[index]; 2085 } 2086} 2087 2088class FocusRectangle extends View { 2089 2090 @SuppressWarnings("unused") 2091 private static final String TAG = "FocusRectangle"; 2092 2093 public FocusRectangle(Context context, AttributeSet attrs) { 2094 super(context, attrs); 2095 } 2096 2097 private void setDrawable(int resid) { 2098 setBackgroundDrawable(getResources().getDrawable(resid)); 2099 } 2100 2101 public void showStart() { 2102 setDrawable(R.drawable.focus_focusing); 2103 } 2104 2105 public void showSuccess() { 2106 setDrawable(R.drawable.focus_focused); 2107 } 2108 2109 public void showFail() { 2110 setDrawable(R.drawable.focus_focus_failed); 2111 } 2112 2113 public void clear() { 2114 setBackgroundDrawable(null); 2115 } 2116} 2117