Camera.java revision e1706c13d469a163d811e29d33b86cc5d4bf67e9
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.net.Uri; 41import android.os.Build; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Environment; 45import android.os.Handler; 46import android.os.Message; 47import android.os.SystemClock; 48import android.os.SystemProperties; 49import android.preference.PreferenceManager; 50import android.provider.MediaStore; 51import android.text.format.DateFormat; 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; 74 75import java.io.File; 76import java.io.FileNotFoundException; 77import java.io.FileOutputStream; 78import java.io.IOException; 79import java.io.OutputStream; 80import java.util.ArrayList; 81import java.util.Collections; 82import java.util.List; 83 84/** The Camera activity which can preview and take pictures. */ 85public class Camera extends NoSearchActivity implements View.OnClickListener, 86 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 87 Switcher.OnSwitchListener, OnScreenSettings.OnVisibilityChangedListener, 88 OnSharedPreferenceChangeListener { 89 90 private static final String TAG = "camera"; 91 92 // This value must be as same as the item value of the string array 93 // "flash_mode" in file "res/values/arrays.xml". 94 private static final String NO_FLASH_MODE = "no_flash"; 95 private static final int CROP_MSG = 1; 96 private static final int FIRST_TIME_INIT = 2; 97 private static final int RESTART_PREVIEW = 3; 98 private static final int CLEAR_SCREEN_DELAY = 4; 99 100 private static final String GPS_MODE_ON = "on"; 101 private static final String GPS_MODE_OFF = "off"; 102 103 private static final int SCREEN_DELAY = 2 * 60 * 1000; 104 private static final int FOCUS_BEEP_VOLUME = 100; 105 106 private static final String SCENE_MODE_ON = "on"; 107 private static final String SCENE_MODE_OFF = "off"; 108 109 private boolean mZooming = false; 110 private boolean mSmoothZoomSupported = false; 111 private int mZoomValue; // The current zoom value. 112 private int mZoomMax; 113 114 private Parameters mParameters; 115 private Parameters mInitialParams; 116 117 private OrientationEventListener mOrientationListener; 118 private int mLastOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 119 private SharedPreferences mPreferences; 120 121 private static final int IDLE = 1; 122 private static final int SNAPSHOT_IN_PROGRESS = 2; 123 124 private static final boolean SWITCH_CAMERA = true; 125 private static final boolean SWITCH_VIDEO = false; 126 127 private int mStatus = IDLE; 128 private static final String sTempCropFilename = "crop-temp"; 129 130 private android.hardware.Camera mCameraDevice; 131 private ContentProviderClient mMediaProviderClient; 132 private SurfaceView mSurfaceView; 133 private SurfaceHolder mSurfaceHolder = null; 134 private ShutterButton mShutterButton; 135 private FocusRectangle mFocusRectangle; 136 private IconIndicator mGpsIndicator; 137 private IconIndicator mFlashIndicator; 138 private IconIndicator mFocusIndicator; 139 private IconIndicator mWhitebalanceIndicator; 140 private IconIndicator mSceneModeIndicator; 141 private ToneGenerator mFocusToneGenerator; 142 private ZoomButtonsController mZoomButtons; 143 private GestureDetector mGestureDetector; 144 private Switcher mSwitcher; 145 private boolean mStartPreviewFail = false; 146 147 // mPostCaptureAlert, mLastPictureButton, mThumbController 148 // are non-null only if isImageCaptureIntent() is true. 149 private ImageView mLastPictureButton; 150 private ThumbnailController mThumbController; 151 152 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 153 private String mCropValue; 154 private Uri mSaveUri; 155 156 private ImageCapture mImageCapture = null; 157 158 private boolean mPreviewing; 159 private boolean mPausing; 160 private boolean mFirstTimeInitialized; 161 private boolean mIsImageCaptureIntent; 162 private boolean mRecordLocation; 163 164 private static final int FOCUS_NOT_STARTED = 0; 165 private static final int FOCUSING = 1; 166 private static final int FOCUSING_SNAP_ON_FINISH = 2; 167 private static final int FOCUS_SUCCESS = 3; 168 private static final int FOCUS_FAIL = 4; 169 private int mFocusState = FOCUS_NOT_STARTED; 170 171 private ContentResolver mContentResolver; 172 private boolean mDidRegister = false; 173 174 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 175 176 private LocationManager mLocationManager = null; 177 178 // Use OneShotPreviewCallback to measure the time between 179 // JpegPictureCallback and preview. 180 private final OneShotPreviewCallback mOneShotPreviewCallback = 181 new OneShotPreviewCallback(); 182 private final ShutterCallback mShutterCallback = new ShutterCallback(); 183 private final PostViewPictureCallback mPostViewPictureCallback = 184 new PostViewPictureCallback(); 185 private final RawPictureCallback mRawPictureCallback = 186 new RawPictureCallback(); 187 private final AutoFocusCallback mAutoFocusCallback = 188 new AutoFocusCallback(); 189 private final ZoomCallback mZoomCallback = new ZoomCallback(); 190 // Use the ErrorCallback to capture the crash count 191 // on the mediaserver 192 private final ErrorCallback mErrorCallback = new ErrorCallback(); 193 194 private long mFocusStartTime; 195 private long mFocusCallbackTime; 196 private long mCaptureStartTime; 197 private long mShutterCallbackTime; 198 private long mPostViewPictureCallbackTime; 199 private long mRawPictureCallbackTime; 200 private long mJpegPictureCallbackTime; 201 private int mPicturesRemaining; 202 203 // These latency time are for the CameraLatency test. 204 public long mAutoFocusTime; 205 public long mShutterLag; 206 public long mShutterToPictureDisplayedTime; 207 public long mPictureDisplayedToJpegCallbackTime; 208 public long mJpegCallbackToFirstFrameTime; 209 210 // Add for test 211 public static boolean mMediaServerDied = false; 212 213 // Focus mode. Options are pref_camera_focusmode_entryvalues. 214 private String mFocusMode; 215 216 private final Handler mHandler = new MainHandler(); 217 private OnScreenSettings mSettings; 218 219 /** 220 * This Handler is used to post message back onto the main thread of the 221 * application 222 */ 223 private class MainHandler extends Handler { 224 @Override 225 public void handleMessage(Message msg) { 226 switch (msg.what) { 227 case RESTART_PREVIEW: { 228 restartPreview(); 229 break; 230 } 231 232 case CLEAR_SCREEN_DELAY: { 233 getWindow().clearFlags( 234 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 235 break; 236 } 237 238 case FIRST_TIME_INIT: { 239 initializeFirstTime(); 240 break; 241 } 242 } 243 } 244 } 245 246 private void keepMediaProviderInstance() { 247 // We want to keep a reference to MediaProvider in camera's lifecycle. 248 // TODO: Utilize mMediaProviderClient instance to replace 249 // ContentResolver calls. 250 if (mMediaProviderClient == null) { 251 mMediaProviderClient = getContentResolver() 252 .acquireContentProviderClient(MediaStore.AUTHORITY); 253 } 254 } 255 256 // Snapshots can only be taken after this is called. It should be called 257 // once only. We could have done these things in onCreate() but we want to 258 // make preview screen appear as soon as possible. 259 private void initializeFirstTime() { 260 if (mFirstTimeInitialized) return; 261 262 // Create orientation listenter. This should be done first because it 263 // takes some time to get first orientation. 264 mOrientationListener = 265 new OrientationEventListener(Camera.this) { 266 @Override 267 public void onOrientationChanged(int orientation) { 268 // We keep the last known orientation. So if the user 269 // first orient the camera then point the camera to 270 // floor/sky, we still have the correct orientation. 271 if (orientation != ORIENTATION_UNKNOWN) { 272 mLastOrientation = orientation; 273 } 274 } 275 }; 276 mOrientationListener.enable(); 277 278 // Initialize location sevice. 279 mLocationManager = (LocationManager) 280 getSystemService(Context.LOCATION_SERVICE); 281 readPreference(); 282 if (mRecordLocation) startReceivingLocationUpdates(); 283 284 keepMediaProviderInstance(); 285 checkStorage(); 286 287 // Initialize last picture button. 288 mContentResolver = getContentResolver(); 289 if (!mIsImageCaptureIntent) { 290 findViewById(R.id.camera_switch).setOnClickListener(this); 291 mLastPictureButton = 292 (ImageView) findViewById(R.id.review_thumbnail); 293 mLastPictureButton.setOnClickListener(this); 294 mThumbController = new ThumbnailController( 295 getResources(), mLastPictureButton, mContentResolver); 296 mThumbController.loadData(ImageManager.getLastImageThumbPath()); 297 // Update last image thumbnail. 298 updateThumbnailButton(); 299 } 300 301 // Initialize shutter button. 302 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 303 mShutterButton.setOnShutterButtonListener(this); 304 mShutterButton.setVisibility(View.VISIBLE); 305 306 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 307 updateFocusIndicator(); 308 309 // Initialize GPS indicator. 310 mGpsIndicator = (IconIndicator) findViewById(R.id.gps_icon); 311 312 ImageManager.ensureOSXCompatibleFolder(); 313 314 installIntentFilter(); 315 316 initializeFocusTone(); 317 318 initializeZoom(); 319 320 mFirstTimeInitialized = true; 321 } 322 323 private void updateThumbnailButton() { 324 // Update last image if URI is invalid and the storage is ready. 325 if (!mThumbController.isUriValid() && mPicturesRemaining >= 0) { 326 updateLastImage(); 327 } 328 mThumbController.updateDisplayIfNeeded(); 329 } 330 331 // If the activity is paused and resumed, this method will be called in 332 // onResume. 333 private void initializeSecondTime() { 334 // Start orientation listener as soon as possible because it takes 335 // some time to get first orientation. 336 mOrientationListener.enable(); 337 338 // Start location update if needed. 339 readPreference(); 340 if (mRecordLocation) startReceivingLocationUpdates(); 341 342 installIntentFilter(); 343 344 initializeFocusTone(); 345 346 keepMediaProviderInstance(); 347 checkStorage(); 348 349 if (mZoomButtons != null) { 350 mCameraDevice.setZoomCallback(mZoomCallback); 351 } 352 353 if (!mIsImageCaptureIntent) { 354 updateThumbnailButton(); 355 } 356 } 357 358 private void initializeZoom() { 359 if (!mParameters.isZoomSupported()) return; 360 361 mZoomMax = mParameters.getMaxZoom(); 362 Log.v(TAG, "Max zoom=" + mZoomMax); 363 mSmoothZoomSupported = mParameters.isSmoothZoomSupported(); 364 Log.v(TAG, "Smooth zoom supported=" + mSmoothZoomSupported); 365 366 mGestureDetector = new GestureDetector(this, new ZoomGestureListener()); 367 mCameraDevice.setZoomCallback(mZoomCallback); 368 mZoomButtons = new ZoomButtonsController(mSurfaceView); 369 mZoomButtons.setAutoDismissed(true); 370 mZoomButtons.setZoomSpeed(100); 371 mZoomButtons.setOnZoomListener( 372 new ZoomButtonsController.OnZoomListener() { 373 public void onVisibilityChanged(boolean visible) { 374 if (visible) { 375 updateZoomButtonsEnabled(); 376 } 377 } 378 379 public void onZoom(boolean zoomIn) { 380 if (isZooming()) return; 381 382 if (zoomIn) { 383 if (mZoomValue < mZoomMax) { 384 if (mSmoothZoomSupported) { 385 mCameraDevice.startSmoothZoom(mZoomValue + 1); 386 mZooming = true; 387 } else { 388 mParameters.setZoom(++mZoomValue); 389 mCameraDevice.setParameters(mParameters); 390 updateZoomButtonsEnabled(); 391 } 392 } 393 } else { 394 if (mZoomValue > 0) { 395 if (mSmoothZoomSupported) { 396 mCameraDevice.startSmoothZoom(mZoomValue - 1); 397 mZooming = true; 398 } else { 399 mParameters.setZoom(--mZoomValue); 400 mCameraDevice.setParameters(mParameters); 401 updateZoomButtonsEnabled(); 402 } 403 } 404 } 405 } 406 }); 407 } 408 409 public void onVisibilityChanged(boolean visible) { 410 // When the on-screen setting is not displayed, we show the gripper. 411 // When the on-screen setting is displayed, we hide the gripper. 412 int reverseVisibility = visible ? View.INVISIBLE : View.VISIBLE; 413 findViewById(R.id.btn_gripper).setVisibility(reverseVisibility); 414 findViewById(R.id.indicator_bar).setVisibility(reverseVisibility); 415 416 if (visible) { 417 mPreferences.registerOnSharedPreferenceChangeListener(this); 418 } else { 419 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 420 } 421 } 422 423 private boolean isZooming() { 424 Log.v(TAG, "mZooming=" + mZooming); 425 return mZooming; 426 } 427 428 private void updateZoomButtonsEnabled() { 429 mZoomButtons.setZoomInEnabled(mZoomValue < mZoomMax); 430 mZoomButtons.setZoomOutEnabled(mZoomValue > 0); 431 } 432 433 private class ZoomGestureListener extends 434 GestureDetector.SimpleOnGestureListener { 435 @Override 436 public boolean onDown(MotionEvent e) { 437 // Show zoom buttons only when preview is started and snapshot 438 // is not in progress. mZoomButtons may be null if it is not 439 // initialized. 440 if (!mPausing && isCameraIdle() && mPreviewing 441 && mZoomButtons != null) { 442 mZoomButtons.setVisible(true); 443 } 444 return true; 445 } 446 447 @Override 448 public boolean onDoubleTap(MotionEvent e) { 449 // Perform zoom only when preview is started and snapshot is not in 450 // progress. 451 if (mPausing || !isCameraIdle() || !mPreviewing 452 || mZoomButtons == null || isZooming()) { 453 return false; 454 } 455 456 if (mZoomValue < mZoomMax) { 457 // Zoom in to the maximum. 458 while (mZoomValue < mZoomMax) { 459 mParameters.setZoom(++mZoomValue); 460 mCameraDevice.setParameters(mParameters); 461 // Wait for a while so we are not changing zoom too fast. 462 try { 463 Thread.sleep(5); 464 } catch (InterruptedException ex) { 465 } 466 } 467 } else { 468 // Zoom out to the minimum. 469 while (mZoomValue > 0) { 470 mParameters.setZoom(--mZoomValue); 471 mCameraDevice.setParameters(mParameters); 472 // Wait for a while so we are not changing zoom too fast. 473 try { 474 Thread.sleep(5); 475 } catch (InterruptedException ex) { 476 } 477 } 478 } 479 updateZoomButtonsEnabled(); 480 return true; 481 } 482 } 483 484 @Override 485 public boolean dispatchTouchEvent(MotionEvent m) { 486 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 487 return mGestureDetector.onTouchEvent(m); 488 } 489 return true; 490 } 491 492 LocationListener [] mLocationListeners = new LocationListener[] { 493 new LocationListener(LocationManager.GPS_PROVIDER), 494 new LocationListener(LocationManager.NETWORK_PROVIDER) 495 }; 496 497 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 498 @Override 499 public void onReceive(Context context, Intent intent) { 500 String action = intent.getAction(); 501 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 502 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 503 || action.equals(Intent.ACTION_MEDIA_CHECKING) 504 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 505 checkStorage(); 506 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 507 checkStorage(); 508 if (!mIsImageCaptureIntent) { 509 updateThumbnailButton(); 510 } 511 } 512 } 513 }; 514 515 private class LocationListener 516 implements android.location.LocationListener { 517 Location mLastLocation; 518 boolean mValid = false; 519 String mProvider; 520 521 public LocationListener(String provider) { 522 mProvider = provider; 523 mLastLocation = new Location(mProvider); 524 } 525 526 public void onLocationChanged(Location newLocation) { 527 if (newLocation.getLatitude() == 0.0 528 && newLocation.getLongitude() == 0.0) { 529 // Hack to filter out 0.0,0.0 locations 530 return; 531 } 532 // If GPS is available before start camera, we won't get status 533 // update so update GPS indicator when we receive data. 534 if (mRecordLocation 535 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 536 mGpsIndicator.setMode(GPS_MODE_ON); 537 } 538 mLastLocation.set(newLocation); 539 mValid = true; 540 } 541 542 public void onProviderEnabled(String provider) { 543 } 544 545 public void onProviderDisabled(String provider) { 546 mValid = false; 547 } 548 549 public void onStatusChanged( 550 String provider, int status, Bundle extras) { 551 switch(status) { 552 case LocationProvider.OUT_OF_SERVICE: 553 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 554 mValid = false; 555 if (mRecordLocation && 556 LocationManager.GPS_PROVIDER.equals(provider)) { 557 mGpsIndicator.setMode(GPS_MODE_OFF); 558 } 559 break; 560 } 561 } 562 } 563 564 public Location current() { 565 return mValid ? mLastLocation : null; 566 } 567 } 568 569 private final class OneShotPreviewCallback 570 implements android.hardware.Camera.PreviewCallback { 571 public void onPreviewFrame(byte[] data, 572 android.hardware.Camera camera) { 573 long now = System.currentTimeMillis(); 574 if (mJpegPictureCallbackTime != 0) { 575 mJpegCallbackToFirstFrameTime = now - mJpegPictureCallbackTime; 576 Log.v(TAG, "mJpegCallbackToFirstFrameTime = " 577 + mJpegCallbackToFirstFrameTime + "ms"); 578 mJpegPictureCallbackTime = 0; 579 } else { 580 Log.v(TAG, "Got first frame"); 581 } 582 } 583 } 584 585 private final class ShutterCallback 586 implements android.hardware.Camera.ShutterCallback { 587 public void onShutter() { 588 mShutterCallbackTime = System.currentTimeMillis(); 589 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 590 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 591 clearFocusState(); 592 } 593 } 594 595 private final class PostViewPictureCallback implements PictureCallback { 596 public void onPictureTaken( 597 byte [] data, android.hardware.Camera camera) { 598 mPostViewPictureCallbackTime = System.currentTimeMillis(); 599 Log.v(TAG, "mShutterToPostViewCallbackTime = " 600 + (mPostViewPictureCallbackTime - mShutterCallbackTime) 601 + "ms"); 602 } 603 } 604 605 private final class RawPictureCallback implements PictureCallback { 606 public void onPictureTaken( 607 byte [] rawData, android.hardware.Camera camera) { 608 mRawPictureCallbackTime = System.currentTimeMillis(); 609 Log.v(TAG, "mShutterToRawCallbackTime = " 610 + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms"); 611 } 612 } 613 614 private final class JpegPictureCallback implements PictureCallback { 615 Location mLocation; 616 617 public JpegPictureCallback(Location loc) { 618 mLocation = loc; 619 } 620 621 public void onPictureTaken( 622 final byte [] jpegData, final android.hardware.Camera camera) { 623 if (mPausing) { 624 return; 625 } 626 627 mJpegPictureCallbackTime = System.currentTimeMillis(); 628 // If postview callback has arrived, the captured image is displayed 629 // in postview callback. If not, the captured image is displayed in 630 // raw picture callback. 631 if (mPostViewPictureCallbackTime != 0) { 632 mShutterToPictureDisplayedTime = 633 mPostViewPictureCallbackTime - mShutterCallbackTime; 634 mPictureDisplayedToJpegCallbackTime = 635 mJpegPictureCallbackTime - mPostViewPictureCallbackTime; 636 } else { 637 mShutterToPictureDisplayedTime = 638 mRawPictureCallbackTime - mShutterCallbackTime; 639 mPictureDisplayedToJpegCallbackTime = 640 mJpegPictureCallbackTime - mRawPictureCallbackTime; 641 } 642 Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = " 643 + mPictureDisplayedToJpegCallbackTime + "ms"); 644 645 if (!mIsImageCaptureIntent) { 646 // We want to show the taken picture for a while, so we wait 647 // for at least 1.2 second before restarting the preview. 648 long delay = 1200 - mPictureDisplayedToJpegCallbackTime; 649 if (delay < 0) { 650 restartPreview(); 651 } else { 652 mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay); 653 } 654 } 655 mImageCapture.storeImage(jpegData, camera, mLocation); 656 657 // Calculate this in advance of each shot so we don't add to shutter 658 // latency. It's true that someone else could write to the SD card in 659 // the mean time and fill it, but that could have happened between the 660 // shutter press and saving the JPEG too. 661 calculatePicturesRemaining(); 662 } 663 } 664 665 private final class AutoFocusCallback 666 implements android.hardware.Camera.AutoFocusCallback { 667 public void onAutoFocus( 668 boolean focused, android.hardware.Camera camera) { 669 mFocusCallbackTime = System.currentTimeMillis(); 670 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 671 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 672 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 673 // Take the picture no matter focus succeeds or fails. No need 674 // to play the AF sound if we're about to play the shutter 675 // sound. 676 if (focused) { 677 mFocusState = FOCUS_SUCCESS; 678 } else { 679 mFocusState = FOCUS_FAIL; 680 } 681 mImageCapture.onSnap(); 682 } else if (mFocusState == FOCUSING) { 683 // User is half-pressing the focus key. Play the focus tone. 684 // Do not take the picture now. 685 ToneGenerator tg = mFocusToneGenerator; 686 if (tg != null) { 687 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 688 } 689 if (focused) { 690 mFocusState = FOCUS_SUCCESS; 691 } else { 692 mFocusState = FOCUS_FAIL; 693 } 694 } else if (mFocusState == FOCUS_NOT_STARTED) { 695 // User has released the focus key before focus completes. 696 // Do nothing. 697 } 698 updateFocusIndicator(); 699 } 700 } 701 702 private static final class ErrorCallback 703 implements android.hardware.Camera.ErrorCallback { 704 public void onError(int error, android.hardware.Camera camera) { 705 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 706 mMediaServerDied = true; 707 Log.v(TAG, "media server died"); 708 } 709 } 710 } 711 712 private final class ZoomCallback 713 implements android.hardware.Camera.ZoomCallback { 714 public void onZoomUpdate(int zoomValue, boolean stopped, 715 android.hardware.Camera camera) { 716 Log.v(TAG, "ZoomCallback: zoom value=" + zoomValue + ". stopped=" 717 + stopped); 718 mZoomValue = zoomValue; 719 // Keep mParameters up to date. We do not getParameter again in 720 // takePicture. If we do not do this, wrong zoom value will be set. 721 mParameters.setZoom(zoomValue); 722 // We only care if the zoom is stopped. mZooming is set to true when 723 // we start smooth zoom. 724 if (stopped) mZooming = false; 725 updateZoomButtonsEnabled(); 726 } 727 } 728 729 private class ImageCapture { 730 731 private boolean mCancel = false; 732 733 private Uri mLastContentUri; 734 735 byte[] mCaptureOnlyData; 736 737 // Returns the rotation degree in the jpeg header. 738 private int storeImage(byte[] data, Location loc) { 739 try { 740 long dateTaken = System.currentTimeMillis(); 741 String name = createName(dateTaken) + ".jpg"; 742 int[] degree = new int[1]; 743 mLastContentUri = ImageManager.addImage( 744 mContentResolver, 745 name, 746 dateTaken, 747 loc, // location from gps/network 748 ImageManager.CAMERA_IMAGE_BUCKET_NAME, name, 749 null, data, 750 degree); 751 if (mLastContentUri == null) { 752 // this means we got an error 753 mCancel = true; 754 } 755 if (!mCancel) { 756 ImageManager.setImageSize(mContentResolver, mLastContentUri, 757 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 758 name).length()); 759 } 760 return degree[0]; 761 } catch (Exception ex) { 762 Log.e(TAG, "Exception while compressing image.", ex); 763 return 0; 764 } 765 } 766 767 public void storeImage(final byte[] data, 768 android.hardware.Camera camera, Location loc) { 769 if (!mIsImageCaptureIntent) { 770 int degree = storeImage(data, loc); 771 sendBroadcast(new Intent( 772 "com.android.camera.NEW_PICTURE", mLastContentUri)); 773 setLastPictureThumb(data, degree, 774 mImageCapture.getLastCaptureUri()); 775 mThumbController.updateDisplayIfNeeded(); 776 } else { 777 mCaptureOnlyData = data; 778 showPostCaptureAlert(); 779 } 780 } 781 782 /** 783 * Initiate the capture of an image. 784 */ 785 public void initiate() { 786 if (mCameraDevice == null) { 787 return; 788 } 789 790 mCancel = false; 791 792 capture(); 793 } 794 795 public Uri getLastCaptureUri() { 796 return mLastContentUri; 797 } 798 799 public byte[] getLastCaptureData() { 800 return mCaptureOnlyData; 801 } 802 803 private void capture() { 804 mCaptureOnlyData = null; 805 806 // Set rotation. 807 int orientation = mLastOrientation; 808 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 809 orientation += 90; 810 } 811 orientation = ImageManager.roundOrientation(orientation); 812 Log.v(TAG, "mLastOrientation = " + mLastOrientation 813 + ", orientation = " + orientation); 814 mParameters.setRotation(orientation); 815 816 // Clear previous GPS location from the parameters. 817 mParameters.removeGpsData(); 818 819 // Set GPS location. 820 Location loc = mRecordLocation ? getCurrentLocation() : null; 821 if (loc != null) { 822 double lat = loc.getLatitude(); 823 double lon = loc.getLongitude(); 824 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 825 826 if (hasLatLon) { 827 mParameters.setGpsLatitude(lat); 828 mParameters.setGpsLongitude(lon); 829 if (loc.hasAltitude()) { 830 mParameters.setGpsAltitude(loc.getAltitude()); 831 } else { 832 // for NETWORK_PROVIDER location provider, we may have 833 // no altitude information, but the driver needs it, so 834 // we fake one. 835 mParameters.setGpsAltitude(0); 836 } 837 if (loc.getTime() != 0) { 838 // Location.getTime() is UTC in milliseconds. 839 // gps-timestamp is UTC in seconds. 840 long utcTimeSeconds = loc.getTime() / 1000; 841 mParameters.setGpsTimestamp(utcTimeSeconds); 842 } 843 } else { 844 loc = null; 845 } 846 } 847 848 mCameraDevice.setParameters(mParameters); 849 850 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 851 mPostViewPictureCallback, new JpegPictureCallback(loc)); 852 mPreviewing = false; 853 } 854 855 public void onSnap() { 856 // If we are already in the middle of taking a snapshot then ignore. 857 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 858 return; 859 } 860 mCaptureStartTime = System.currentTimeMillis(); 861 mPostViewPictureCallbackTime = 0; 862 863 // Don't check the filesystem here, we can't afford the latency. 864 // Instead, check the cached value which was calculated when the 865 // preview was restarted. 866 if (mPicturesRemaining < 1) { 867 updateStorageHint(mPicturesRemaining); 868 return; 869 } 870 871 mStatus = SNAPSHOT_IN_PROGRESS; 872 873 mImageCapture.initiate(); 874 } 875 876 private void clearLastData() { 877 mCaptureOnlyData = null; 878 } 879 } 880 881 private boolean saveDataToFile(String filePath, byte[] data) { 882 FileOutputStream f = null; 883 try { 884 f = new FileOutputStream(filePath); 885 f.write(data); 886 } catch (IOException e) { 887 return false; 888 } finally { 889 MenuHelper.closeSilently(f); 890 } 891 return true; 892 } 893 894 private void setLastPictureThumb(byte[] data, int degree, Uri uri) { 895 BitmapFactory.Options options = new BitmapFactory.Options(); 896 options.inSampleSize = 16; 897 Bitmap lastPictureThumb = 898 BitmapFactory.decodeByteArray(data, 0, data.length, options); 899 lastPictureThumb = Util.rotate(lastPictureThumb, degree); 900 mThumbController.setData(uri, lastPictureThumb); 901 } 902 903 private static String createName(long dateTaken) { 904 return DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString(); 905 } 906 907 @Override 908 public void onCreate(Bundle icicle) { 909 super.onCreate(icicle); 910 911 Window win = getWindow(); 912 win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 913 setContentView(R.layout.camera); 914 mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview); 915 916 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 917 CameraSettings.upgradePreferences(mPreferences); 918 919 /* 920 * To reduce startup time, we start the preview in another thread. 921 * We make sure the preview is started at the end of onCreate. 922 */ 923 Thread startPreviewThread = new Thread(new Runnable() { 924 public void run() { 925 try { 926 mStartPreviewFail = false; 927 startPreview(); 928 } catch (CameraHardwareException e) { 929 // In eng build, we throw the exception so that test tool 930 // can detect it and report it 931 if ("eng".equals(Build.TYPE)) { 932 throw new RuntimeException(e); 933 } 934 mStartPreviewFail = true; 935 } 936 } 937 }); 938 startPreviewThread.start(); 939 940 // don't set mSurfaceHolder here. We have it set ONLY within 941 // surfaceChanged / surfaceDestroyed, other parts of the code 942 // assume that when it is set, the surface is also set. 943 SurfaceHolder holder = mSurfaceView.getHolder(); 944 holder.addCallback(this); 945 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 946 947 mIsImageCaptureIntent = isImageCaptureIntent(); 948 if (mIsImageCaptureIntent) { 949 setupCaptureParams(); 950 } 951 952 LayoutInflater inflater = getLayoutInflater(); 953 954 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 955 if (mIsImageCaptureIntent) { 956 View controlBar = inflater.inflate( 957 R.layout.attach_camera_control, rootView); 958 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 959 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 960 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 961 } else { 962 inflater.inflate(R.layout.camera_control, rootView); 963 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 964 mSwitcher.setOnSwitchListener(this); 965 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 966 } 967 findViewById(R.id.btn_gripper) 968 .setOnTouchListener(new GripperTouchListener()); 969 970 mFlashIndicator = (IconIndicator) findViewById(R.id.flash_icon); 971 mFocusIndicator = (IconIndicator) findViewById(R.id.focus_icon); 972 mSceneModeIndicator = (IconIndicator) findViewById(R.id.scenemode_icon); 973 mWhitebalanceIndicator = 974 (IconIndicator) findViewById(R.id.whitebalance_icon); 975 976 // Make sure preview is started. 977 try { 978 startPreviewThread.join(); 979 if (mStartPreviewFail) { 980 showCameraErrorAndFinish(); 981 return; 982 } 983 } catch (InterruptedException ex) { 984 // ignore 985 } 986 } 987 988 private class GripperTouchListener implements View.OnTouchListener { 989 public boolean onTouch(View view, MotionEvent event) { 990 switch (event.getAction()) { 991 case MotionEvent.ACTION_DOWN: 992 return true; 993 case MotionEvent.ACTION_UP: 994 showOnScreenSettings(); 995 return true; 996 } 997 return false; 998 } 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 1028 private void showOnScreenSettings() { 1029 if (mSettings == null) { 1030 mSettings = new OnScreenSettings( 1031 findViewById(R.id.camera_preview)); 1032 CameraSettings helper = 1033 new CameraSettings(this, mInitialParams); 1034 mSettings.setPreferenceScreen(helper 1035 .getPreferenceScreen(R.xml.camera_preferences)); 1036 mSettings.setOnVisibilityChangedListener(this); 1037 1038 String sceneMode = mParameters.getSceneMode(); 1039 if (sceneMode == null 1040 || Parameters.SCENE_MODE_AUTO.equals(sceneMode)) { 1041 // If scene mode is auto, cancel override in settings 1042 mSettings.overrideSettings(CameraSettings.KEY_FLASH_MODE, null); 1043 mSettings.overrideSettings(CameraSettings.KEY_FOCUS_MODE, null); 1044 mSettings.overrideSettings( 1045 CameraSettings.KEY_WHITE_BALANCE, null); 1046 } else { 1047 // If scene mode is not auto, override the value in settings 1048 mSettings.overrideSettings(CameraSettings.KEY_FLASH_MODE, 1049 mParameters.getFlashMode()); 1050 mSettings.overrideSettings(CameraSettings.KEY_FOCUS_MODE, 1051 mParameters.getFocusMode()); 1052 mSettings.overrideSettings(CameraSettings.KEY_WHITE_BALANCE, 1053 mParameters.getWhiteBalance()); 1054 } 1055 } 1056 mSettings.setVisible(true); 1057 } 1058 1059 public void onClick(View v) { 1060 switch (v.getId()) { 1061 case R.id.btn_retake: 1062 hidePostCaptureAlert(); 1063 restartPreview(); 1064 break; 1065 case R.id.review_thumbnail: 1066 if (isCameraIdle()) { 1067 viewLastImage(); 1068 } 1069 break; 1070 case R.id.btn_done: 1071 doAttach(); 1072 break; 1073 case R.id.btn_cancel: 1074 doCancel(); 1075 } 1076 } 1077 1078 private Bitmap createCaptureBitmap(byte[] data) { 1079 // This is really stupid...we just want to read the orientation in 1080 // the jpeg header. 1081 String filepath = ImageManager.getTempJpegPath(); 1082 int degree = 0; 1083 if (saveDataToFile(filepath, data)) { 1084 degree = ImageManager.getExifOrientation(filepath); 1085 new File(filepath).delete(); 1086 } 1087 1088 // Limit to 50k pixels so we can return it in the intent. 1089 Bitmap bitmap = Util.makeBitmap(data, 50 * 1024); 1090 bitmap = Util.rotate(bitmap, degree); 1091 return bitmap; 1092 } 1093 1094 private void doAttach() { 1095 if (mPausing) { 1096 return; 1097 } 1098 1099 byte[] data = mImageCapture.getLastCaptureData(); 1100 1101 if (mCropValue == null) { 1102 // First handle the no crop case -- just return the value. If the 1103 // caller specifies a "save uri" then write the data to it's 1104 // stream. Otherwise, pass back a scaled down version of the bitmap 1105 // directly in the extras. 1106 if (mSaveUri != null) { 1107 OutputStream outputStream = null; 1108 try { 1109 outputStream = mContentResolver.openOutputStream(mSaveUri); 1110 outputStream.write(data); 1111 outputStream.close(); 1112 1113 setResult(RESULT_OK); 1114 finish(); 1115 } catch (IOException ex) { 1116 // ignore exception 1117 } finally { 1118 Util.closeSilently(outputStream); 1119 } 1120 } else { 1121 Bitmap bitmap = createCaptureBitmap(data); 1122 setResult(RESULT_OK, 1123 new Intent("inline-data").putExtra("data", bitmap)); 1124 finish(); 1125 } 1126 } else { 1127 // Save the image to a temp file and invoke the cropper 1128 Uri tempUri = null; 1129 FileOutputStream tempStream = null; 1130 try { 1131 File path = getFileStreamPath(sTempCropFilename); 1132 path.delete(); 1133 tempStream = openFileOutput(sTempCropFilename, 0); 1134 tempStream.write(data); 1135 tempStream.close(); 1136 tempUri = Uri.fromFile(path); 1137 } catch (FileNotFoundException ex) { 1138 setResult(Activity.RESULT_CANCELED); 1139 finish(); 1140 return; 1141 } catch (IOException ex) { 1142 setResult(Activity.RESULT_CANCELED); 1143 finish(); 1144 return; 1145 } finally { 1146 Util.closeSilently(tempStream); 1147 } 1148 1149 Bundle newExtras = new Bundle(); 1150 if (mCropValue.equals("circle")) { 1151 newExtras.putString("circleCrop", "true"); 1152 } 1153 if (mSaveUri != null) { 1154 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 1155 } else { 1156 newExtras.putBoolean("return-data", true); 1157 } 1158 1159 Intent cropIntent = new Intent("com.android.camera.action.CROP"); 1160 1161 cropIntent.setData(tempUri); 1162 cropIntent.putExtras(newExtras); 1163 1164 startActivityForResult(cropIntent, CROP_MSG); 1165 } 1166 } 1167 1168 private void doCancel() { 1169 setResult(RESULT_CANCELED, new Intent()); 1170 finish(); 1171 } 1172 1173 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1174 if (mPausing) { 1175 return; 1176 } 1177 switch (button.getId()) { 1178 case R.id.shutter_button: 1179 doFocus(pressed); 1180 break; 1181 } 1182 } 1183 1184 public void onShutterButtonClick(ShutterButton button) { 1185 if (mPausing) { 1186 return; 1187 } 1188 switch (button.getId()) { 1189 case R.id.shutter_button: 1190 doSnap(); 1191 break; 1192 } 1193 } 1194 1195 private OnScreenHint mStorageHint; 1196 1197 private void updateStorageHint(int remaining) { 1198 String noStorageText = null; 1199 1200 if (remaining == MenuHelper.NO_STORAGE_ERROR) { 1201 String state = Environment.getExternalStorageState(); 1202 if (state == Environment.MEDIA_CHECKING || 1203 ImageManager.isMediaScannerScanning(getContentResolver())) { 1204 noStorageText = getString(R.string.preparing_sd); 1205 } else { 1206 noStorageText = getString(R.string.no_storage); 1207 } 1208 } else if (remaining < 1) { 1209 noStorageText = getString(R.string.not_enough_space); 1210 } 1211 1212 if (noStorageText != null) { 1213 if (mStorageHint == null) { 1214 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1215 } else { 1216 mStorageHint.setText(noStorageText); 1217 } 1218 mStorageHint.show(); 1219 } else if (mStorageHint != null) { 1220 mStorageHint.cancel(); 1221 mStorageHint = null; 1222 } 1223 } 1224 1225 private void installIntentFilter() { 1226 // install an intent filter to receive SD card related events. 1227 IntentFilter intentFilter = 1228 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1229 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1230 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED); 1231 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1232 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1233 intentFilter.addDataScheme("file"); 1234 registerReceiver(mReceiver, intentFilter); 1235 mDidRegister = true; 1236 } 1237 1238 private void initializeFocusTone() { 1239 // Initialize focus tone generator. 1240 try { 1241 mFocusToneGenerator = new ToneGenerator( 1242 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1243 } catch (Throwable ex) { 1244 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1245 mFocusToneGenerator = null; 1246 } 1247 } 1248 1249 private void readPreference() { 1250 mRecordLocation = RecordLocationPreference.get( 1251 mPreferences, getContentResolver()); 1252 mFocusMode = mPreferences.getString( 1253 CameraSettings.KEY_FOCUS_MODE, 1254 getString(R.string.pref_camera_focusmode_default)); 1255 } 1256 1257 @Override 1258 public void onResume() { 1259 super.onResume(); 1260 1261 mPausing = false; 1262 mJpegPictureCallbackTime = 0; 1263 mZoomValue = 0; 1264 mImageCapture = new ImageCapture(); 1265 1266 // Start the preview if it is not started. 1267 if (!mPreviewing && !mStartPreviewFail) { 1268 try { 1269 startPreview(); 1270 } catch (CameraHardwareException e) { 1271 showCameraErrorAndFinish(); 1272 return; 1273 } 1274 } 1275 1276 if (mSurfaceHolder != null) { 1277 // If first time initialization is not finished, put it in the 1278 // message queue. 1279 if (!mFirstTimeInitialized) { 1280 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1281 } else { 1282 initializeSecondTime(); 1283 } 1284 } 1285 keepScreenOnAwhile(); 1286 } 1287 1288 private static ImageManager.DataLocation dataLocation() { 1289 return ImageManager.DataLocation.EXTERNAL; 1290 } 1291 1292 @Override 1293 protected void onPause() { 1294 mPausing = true; 1295 stopPreview(); 1296 // Close the camera now because other activities may need to use it. 1297 closeCamera(); 1298 resetScreenOn(); 1299 1300 if (mSettings != null && mSettings.isVisible()) { 1301 mSettings.setVisible(false); 1302 } 1303 1304 if (mFirstTimeInitialized) { 1305 mOrientationListener.disable(); 1306 mGpsIndicator.setMode(GPS_MODE_OFF); 1307 if (!mIsImageCaptureIntent) { 1308 mThumbController.storeData( 1309 ImageManager.getLastImageThumbPath()); 1310 } 1311 hidePostCaptureAlert(); 1312 } 1313 1314 if (mDidRegister) { 1315 unregisterReceiver(mReceiver); 1316 mDidRegister = false; 1317 } 1318 stopReceivingLocationUpdates(); 1319 1320 if (mFocusToneGenerator != null) { 1321 mFocusToneGenerator.release(); 1322 mFocusToneGenerator = null; 1323 } 1324 1325 if (mStorageHint != null) { 1326 mStorageHint.cancel(); 1327 mStorageHint = null; 1328 } 1329 1330 // If we are in an image capture intent and has taken 1331 // a picture, we just clear it in onPause. 1332 mImageCapture.clearLastData(); 1333 mImageCapture = null; 1334 1335 // This is necessary to make the ZoomButtonsController unregister 1336 // its configuration change receiver. 1337 if (mZoomButtons != null) { 1338 mZoomButtons.setVisible(false); 1339 } 1340 1341 // Remove the messages in the event queue. 1342 mHandler.removeMessages(RESTART_PREVIEW); 1343 mHandler.removeMessages(FIRST_TIME_INIT); 1344 1345 super.onPause(); 1346 } 1347 1348 @Override 1349 protected void onActivityResult( 1350 int requestCode, int resultCode, Intent data) { 1351 switch (requestCode) { 1352 case CROP_MSG: { 1353 Intent intent = new Intent(); 1354 if (data != null) { 1355 Bundle extras = data.getExtras(); 1356 if (extras != null) { 1357 intent.putExtras(extras); 1358 } 1359 } 1360 setResult(resultCode, intent); 1361 finish(); 1362 1363 File path = getFileStreamPath(sTempCropFilename); 1364 path.delete(); 1365 1366 break; 1367 } 1368 } 1369 } 1370 1371 private boolean canTakePicture() { 1372 return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0); 1373 } 1374 1375 private void autoFocus() { 1376 // Initiate autofocus only when preview is started and snapshot is not 1377 // in progress. 1378 if (canTakePicture()) { 1379 Log.v(TAG, "Start autofocus."); 1380 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1381 mFocusStartTime = System.currentTimeMillis(); 1382 mFocusState = FOCUSING; 1383 updateFocusIndicator(); 1384 mCameraDevice.autoFocus(mAutoFocusCallback); 1385 } 1386 } 1387 1388 private void cancelAutoFocus() { 1389 // User releases half-pressed focus key. 1390 if (mFocusState == FOCUSING || mFocusState == FOCUS_SUCCESS 1391 || mFocusState == FOCUS_FAIL) { 1392 Log.v(TAG, "Cancel autofocus."); 1393 mCameraDevice.cancelAutoFocus(); 1394 } 1395 if (mFocusState != FOCUSING_SNAP_ON_FINISH) { 1396 clearFocusState(); 1397 } 1398 } 1399 1400 private void clearFocusState() { 1401 mFocusState = FOCUS_NOT_STARTED; 1402 updateFocusIndicator(); 1403 } 1404 1405 private void updateFocusIndicator() { 1406 if (mFocusRectangle == null) return; 1407 1408 if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) { 1409 mFocusRectangle.showStart(); 1410 } else if (mFocusState == FOCUS_SUCCESS) { 1411 mFocusRectangle.showSuccess(); 1412 } else if (mFocusState == FOCUS_FAIL) { 1413 mFocusRectangle.showFail(); 1414 } else { 1415 mFocusRectangle.clear(); 1416 } 1417 } 1418 1419 @Override 1420 public void onBackPressed() { 1421 if (!isCameraIdle()) { 1422 // ignore backs while we're taking a picture 1423 return; 1424 } 1425 super.onBackPressed(); 1426 } 1427 1428 @Override 1429 public boolean onKeyDown(int keyCode, KeyEvent event) { 1430 switch (keyCode) { 1431 case KeyEvent.KEYCODE_FOCUS: 1432 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1433 doFocus(true); 1434 } 1435 return true; 1436 case KeyEvent.KEYCODE_CAMERA: 1437 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1438 doSnap(); 1439 } 1440 return true; 1441 case KeyEvent.KEYCODE_DPAD_CENTER: 1442 // If we get a dpad center event without any focused view, move 1443 // the focus to the shutter button and press it. 1444 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1445 // Start auto-focus immediately to reduce shutter lag. After 1446 // the shutter button gets the focus, doFocus() will be 1447 // called again but it is fine. 1448 doFocus(true); 1449 if (mShutterButton.isInTouchMode()) { 1450 mShutterButton.requestFocusFromTouch(); 1451 } else { 1452 mShutterButton.requestFocus(); 1453 } 1454 mShutterButton.setPressed(true); 1455 } 1456 return true; 1457 } 1458 1459 return super.onKeyDown(keyCode, event); 1460 } 1461 1462 @Override 1463 public boolean onKeyUp(int keyCode, KeyEvent event) { 1464 switch (keyCode) { 1465 case KeyEvent.KEYCODE_FOCUS: 1466 if (mFirstTimeInitialized) { 1467 doFocus(false); 1468 } 1469 return true; 1470 case KeyEvent.KEYCODE_MENU: 1471 if (mIsImageCaptureIntent) { 1472 showOnScreenSettings(); 1473 return true; 1474 } 1475 break; 1476 } 1477 return super.onKeyUp(keyCode, event); 1478 } 1479 1480 private void doSnap() { 1481 Log.v(TAG, "doSnap: mFocusState=" + mFocusState); 1482 // If the user has half-pressed the shutter and focus is completed, we 1483 // can take the photo right away. If the focus mode is infinity, we can 1484 // also take the photo. 1485 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1486 || (mFocusState == FOCUS_SUCCESS 1487 || mFocusState == FOCUS_FAIL)) { 1488 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1489 mImageCapture.onSnap(); 1490 } else if (mFocusState == FOCUSING) { 1491 // Half pressing the shutter (i.e. the focus button event) will 1492 // already have requested AF for us, so just request capture on 1493 // focus here. 1494 mFocusState = FOCUSING_SNAP_ON_FINISH; 1495 } else if (mFocusState == FOCUS_NOT_STARTED) { 1496 // Focus key down event is dropped for some reasons. Just ignore. 1497 } 1498 } 1499 1500 private void doFocus(boolean pressed) { 1501 // Do the focus if the mode is not infinity. 1502 if (!mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)) { 1503 if (pressed) { // Focus key down. 1504 autoFocus(); 1505 } else { // Focus key up. 1506 cancelAutoFocus(); 1507 } 1508 } 1509 } 1510 1511 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1512 // Make sure we have a surface in the holder before proceeding. 1513 if (holder.getSurface() == null) { 1514 Log.d(TAG, "holder.getSurface() == null"); 1515 return; 1516 } 1517 1518 // The mCameraDevice will be null if it fails to connect to the camera 1519 // hardware. In this case we will show a dialog and then finish the 1520 // activity, so it's OK to ignore it. 1521 if (mCameraDevice == null) return; 1522 1523 mSurfaceHolder = holder; 1524 1525 // Sometimes surfaceChanged is called after onPause. Ignore it. 1526 if (mPausing || isFinishing()) return; 1527 1528 // Set preview display if the surface is being created. Preview was 1529 // already started. 1530 if (holder.isCreating()) { 1531 setPreviewDisplay(holder); 1532 } 1533 1534 // If first time initialization is not finished, send a message to do 1535 // it later. We want to finish surfaceChanged as soon as possible to let 1536 // user see preview first. 1537 if (!mFirstTimeInitialized) { 1538 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1539 } else { 1540 initializeSecondTime(); 1541 } 1542 } 1543 1544 public void surfaceCreated(SurfaceHolder holder) { 1545 } 1546 1547 public void surfaceDestroyed(SurfaceHolder holder) { 1548 stopPreview(); 1549 mSurfaceHolder = null; 1550 } 1551 1552 private void closeCamera() { 1553 if (mCameraDevice != null) { 1554 CameraHolder.instance().release(); 1555 if (mZoomButtons != null) mCameraDevice.setZoomCallback(null); 1556 mCameraDevice = null; 1557 mPreviewing = false; 1558 } 1559 } 1560 1561 private void ensureCameraDevice() throws CameraHardwareException { 1562 if (mCameraDevice == null) { 1563 mCameraDevice = CameraHolder.instance().open(); 1564 mInitialParams = mCameraDevice.getParameters(); 1565 } 1566 } 1567 1568 private void updateLastImage() { 1569 IImageList list = ImageManager.makeImageList( 1570 mContentResolver, 1571 dataLocation(), 1572 ImageManager.INCLUDE_IMAGES, 1573 ImageManager.SORT_ASCENDING, 1574 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1575 int count = list.getCount(); 1576 if (count > 0) { 1577 IImage image = list.getImageAt(count - 1); 1578 Uri uri = image.fullSizeImageUri(); 1579 mThumbController.setData(uri, image.miniThumbBitmap()); 1580 } else { 1581 mThumbController.setData(null, null); 1582 } 1583 list.close(); 1584 } 1585 1586 private void showCameraErrorAndFinish() { 1587 Resources ress = getResources(); 1588 Util.showFatalErrorAndFinish(Camera.this, 1589 ress.getString(R.string.camera_error_title), 1590 ress.getString(R.string.cannot_connect_camera)); 1591 } 1592 1593 private void restartPreview() { 1594 // make sure the surfaceview fills the whole screen when previewing 1595 try { 1596 startPreview(); 1597 } catch (CameraHardwareException e) { 1598 showCameraErrorAndFinish(); 1599 return; 1600 } 1601 } 1602 1603 private void setPreviewDisplay(SurfaceHolder holder) { 1604 try { 1605 mCameraDevice.setPreviewDisplay(holder); 1606 } catch (Throwable ex) { 1607 closeCamera(); 1608 throw new RuntimeException("setPreviewDisplay failed", ex); 1609 } 1610 } 1611 1612 private void startPreview() throws CameraHardwareException { 1613 if (mPausing || isFinishing()) return; 1614 1615 ensureCameraDevice(); 1616 1617 // If we're previewing already, stop the preview first (this will blank 1618 // the screen). 1619 if (mPreviewing) stopPreview(); 1620 1621 setPreviewDisplay(mSurfaceHolder); 1622 setCameraParameters(); 1623 1624 final long wallTimeStart = SystemClock.elapsedRealtime(); 1625 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1626 1627 // Set one shot preview callback for latency measurement. 1628 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1629 mCameraDevice.setErrorCallback(mErrorCallback); 1630 1631 try { 1632 Log.v(TAG, "startPreview"); 1633 mCameraDevice.startPreview(); 1634 } catch (Throwable ex) { 1635 closeCamera(); 1636 throw new RuntimeException("startPreview failed", ex); 1637 } 1638 mPreviewing = true; 1639 mZooming = false; 1640 mStatus = IDLE; 1641 1642 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1643 long wallTimeEnd = SystemClock.elapsedRealtime(); 1644 if ((wallTimeEnd - wallTimeStart) > 3000) { 1645 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1646 + " ms. Thread time was" 1647 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1648 } 1649 } 1650 1651 private void stopPreview() { 1652 if (mCameraDevice != null && mPreviewing) { 1653 Log.v(TAG, "stopPreview"); 1654 mCameraDevice.stopPreview(); 1655 } 1656 mPreviewing = false; 1657 // If auto focus was in progress, it would have been canceled. 1658 clearFocusState(); 1659 } 1660 1661 private Size getOptimalPreviewSize(List<Size> sizes, double targetRatio) { 1662 final double ASPECT_TOLERANCE = 0.05; 1663 if (sizes == null) return null; 1664 1665 Size optimalSize = null; 1666 double minDiff = Double.MAX_VALUE; 1667 1668 // Because of bugs of overlay and layout, we sometimes will try to 1669 // layout the viewfinder in the portrait orientation and thus get the 1670 // wrong size of mSurfaceView. When we change the preview size, the 1671 // new overlay will be created before the old one closed, which causes 1672 // an exception. For now, just get the screen size 1673 1674 Display display = getWindowManager().getDefaultDisplay(); 1675 int targetHeight = Math.min(display.getHeight(), display.getWidth()); 1676 1677 if (targetHeight <= 0) { 1678 // We don't know the size of SurefaceView, use screen height 1679 WindowManager windowManager = (WindowManager) 1680 getSystemService(Context.WINDOW_SERVICE); 1681 targetHeight = windowManager.getDefaultDisplay().getHeight(); 1682 } 1683 1684 // Try to find an size match aspect ratio and size 1685 for (Size size : sizes) { 1686 double ratio = (double) size.width / size.height; 1687 if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 1688 if (Math.abs(size.height - targetHeight) < minDiff) { 1689 optimalSize = size; 1690 minDiff = Math.abs(size.height - targetHeight); 1691 } 1692 } 1693 1694 // Cannot find the one match the aspect ratio, ignore the requirement 1695 if (optimalSize == null) { 1696 Log.v(TAG, "No preview size match the aspect ratio"); 1697 minDiff = Double.MAX_VALUE; 1698 for (Size size : sizes) { 1699 if (Math.abs(size.height - targetHeight) < minDiff) { 1700 optimalSize = size; 1701 minDiff = Math.abs(size.height - targetHeight); 1702 } 1703 } 1704 } 1705 Log.v(TAG, String.format( 1706 "Optimal preview size is %sx%s", 1707 optimalSize.width, optimalSize.height)); 1708 return optimalSize; 1709 } 1710 1711 private static boolean isSupported(String value, List<String> supported) { 1712 return supported == null ? false : supported.indexOf(value) >= 0; 1713 } 1714 1715 private void setCameraParameters() { 1716 mParameters = mCameraDevice.getParameters(); 1717 1718 // Since change scene mode may change supported values, 1719 // Set scene mode first, 1720 String sceneMode = mPreferences.getString( 1721 CameraSettings.KEY_SCENE_MODE, 1722 getString(R.string.pref_camera_scenemode_default)); 1723 if (isSupported(sceneMode, mParameters.getSupportedSceneModes())) { 1724 if (!mParameters.getSceneMode().equals(sceneMode)) { 1725 mParameters.setSceneMode(sceneMode); 1726 mCameraDevice.setParameters(mParameters); 1727 1728 // Setting scene mode will change the settings of flash mode, 1729 // white balance, and focus mode. Here we read back the 1730 // parameters, so we can know those settings. 1731 mParameters = mCameraDevice.getParameters(); 1732 } 1733 } else { 1734 sceneMode = mParameters.getSceneMode(); 1735 if (sceneMode == null) { 1736 sceneMode = Parameters.SCENE_MODE_AUTO; 1737 } 1738 } 1739 1740 // Reset preview frame rate to the maximum because it may be lowered by 1741 // video camera application. 1742 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1743 if (frameRates != null) { 1744 Integer max = Collections.max(frameRates); 1745 mParameters.setPreviewFrameRate(max); 1746 } 1747 1748 // Set picture size. 1749 String pictureSize = mPreferences.getString( 1750 CameraSettings.KEY_PICTURE_SIZE, null); 1751 if (pictureSize == null) { 1752 CameraSettings.initialCameraPictureSize(this, mParameters); 1753 } else { 1754 List<Size> supported = mParameters.getSupportedPictureSizes(); 1755 CameraSettings.setCameraPictureSize( 1756 pictureSize, supported, mParameters); 1757 } 1758 1759 // Set the preview frame aspect ratio according to the picture size. 1760 Size size = mParameters.getPictureSize(); 1761 PreviewFrameLayout frameLayout = 1762 (PreviewFrameLayout) findViewById(R.id.frame_layout); 1763 frameLayout.setAspectRatio((double) size.width / size.height); 1764 1765 // Set a preview size that is closest to the viewfinder height and has 1766 // the right aspect ratio. 1767 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1768 Size optimalSize = getOptimalPreviewSize( 1769 sizes, (double) size.width / size.height); 1770 if (optimalSize != null) { 1771 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1772 } 1773 1774 // Set JPEG quality. 1775 String jpegQuality = mPreferences.getString( 1776 CameraSettings.KEY_JPEG_QUALITY, 1777 getString(R.string.pref_camera_jpegquality_default)); 1778 mParameters.setJpegQuality(getQualityNumber(jpegQuality)); 1779 1780 // Set zoom. 1781 if (mParameters.isZoomSupported()) { 1782 mParameters.setZoom(mZoomValue); 1783 } 1784 1785 // For the following settings, we need to check if the settings are 1786 // still supported by latest driver, if not, ignore the settings. 1787 1788 // Set color effect parameter. 1789 String colorEffect = mPreferences.getString( 1790 CameraSettings.KEY_COLOR_EFFECT, 1791 getString(R.string.pref_camera_coloreffect_default)); 1792 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 1793 mParameters.setColorEffect(colorEffect); 1794 } 1795 1796 // If scene mode is set, we cannot set flash mode, white balance, and 1797 // focus mode, instead, we read it from driver 1798 String flashMode; 1799 String whiteBalance; 1800 if (!Parameters.SCENE_MODE_AUTO.equals(sceneMode)) { 1801 flashMode = mParameters.getFlashMode(); 1802 whiteBalance = mParameters.getWhiteBalance(); 1803 mFocusMode = mParameters.getFocusMode(); 1804 if (mSettings != null) { 1805 mSettings.overrideSettings( 1806 CameraSettings.KEY_FLASH_MODE, flashMode); 1807 mSettings.overrideSettings( 1808 CameraSettings.KEY_WHITE_BALANCE, whiteBalance); 1809 mSettings.overrideSettings( 1810 CameraSettings.KEY_FOCUS_MODE, mFocusMode); 1811 } 1812 } else { 1813 if (mSettings != null) { 1814 mSettings.overrideSettings(CameraSettings.KEY_FLASH_MODE, null); 1815 mSettings.overrideSettings(CameraSettings.KEY_FOCUS_MODE, null); 1816 mSettings.overrideSettings( 1817 CameraSettings.KEY_WHITE_BALANCE, null); 1818 } 1819 1820 // Set flash mode. 1821 flashMode = mPreferences.getString( 1822 CameraSettings.KEY_FLASH_MODE, 1823 getString(R.string.pref_camera_flashmode_default)); 1824 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1825 if (isSupported(flashMode, supportedFlash)) { 1826 mParameters.setFlashMode(flashMode); 1827 } else { 1828 flashMode = mParameters.getFlashMode(); 1829 if (flashMode == null) { 1830 flashMode = NO_FLASH_MODE; 1831 } 1832 } 1833 1834 // Set white balance parameter. 1835 whiteBalance = mPreferences.getString( 1836 CameraSettings.KEY_WHITE_BALANCE, 1837 getString(R.string.pref_camera_whitebalance_default)); 1838 if (isSupported(whiteBalance, 1839 mParameters.getSupportedWhiteBalance())) { 1840 mParameters.setWhiteBalance(whiteBalance); 1841 } else { 1842 whiteBalance = mParameters.getWhiteBalance(); 1843 if (whiteBalance == null) { 1844 whiteBalance = Parameters.WHITE_BALANCE_AUTO; 1845 } 1846 } 1847 1848 // Set focus mode. 1849 mFocusMode = mPreferences.getString( 1850 CameraSettings.KEY_FOCUS_MODE, 1851 getString(R.string.pref_camera_focusmode_default)); 1852 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 1853 mParameters.setFocusMode(mFocusMode); 1854 } else { 1855 mFocusMode = mParameters.getFocusMode(); 1856 if (mFocusMode == null) { 1857 mFocusMode = Parameters.FOCUS_MODE_AUTO; 1858 } 1859 } 1860 1861 mCameraDevice.setParameters(mParameters); 1862 } 1863 1864 // We post the runner because this function can be called from 1865 // non-UI thread (i.e., startPreviewThread). 1866 final String finalWhiteBalance = whiteBalance; 1867 final String finalFlashMode = flashMode; 1868 final String finalSceneMode = 1869 Parameters.SCENE_MODE_AUTO.equals(sceneMode) 1870 ? SCENE_MODE_OFF 1871 : SCENE_MODE_ON; 1872 1873 mHandler.post(new Runnable() { 1874 public void run() { 1875 mFocusIndicator.setMode(mFocusMode); 1876 mWhitebalanceIndicator.setMode(finalWhiteBalance); 1877 mSceneModeIndicator.setMode(finalSceneMode); 1878 mFlashIndicator.setMode(finalFlashMode); 1879 } 1880 }); 1881 } 1882 1883 private void gotoGallery() { 1884 MenuHelper.gotoCameraImageGallery(this); 1885 } 1886 1887 private void viewLastImage() { 1888 if (mThumbController.isUriValid()) { 1889 Uri targetUri = mThumbController.getUri(); 1890 targetUri = targetUri.buildUpon().appendQueryParameter( 1891 "bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); 1892 Intent intent = new Intent(this, ReviewImage.class); 1893 intent.setData(targetUri); 1894 intent.putExtra(MediaStore.EXTRA_FULL_SCREEN, true); 1895 intent.putExtra(MediaStore.EXTRA_SHOW_ACTION_ICONS, true); 1896 intent.putExtra("com.android.camera.ReviewMode", true); 1897 try { 1898 startActivity(intent); 1899 } catch (ActivityNotFoundException ex) { 1900 Log.e(TAG, "review image fail", ex); 1901 } 1902 } else { 1903 Log.e(TAG, "Can't view last image."); 1904 } 1905 } 1906 1907 private void startReceivingLocationUpdates() { 1908 if (mLocationManager != null) { 1909 try { 1910 mLocationManager.requestLocationUpdates( 1911 LocationManager.NETWORK_PROVIDER, 1912 1000, 1913 0F, 1914 mLocationListeners[1]); 1915 } catch (java.lang.SecurityException ex) { 1916 Log.i(TAG, "fail to request location update, ignore", ex); 1917 } catch (IllegalArgumentException ex) { 1918 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1919 } 1920 try { 1921 mLocationManager.requestLocationUpdates( 1922 LocationManager.GPS_PROVIDER, 1923 1000, 1924 0F, 1925 mLocationListeners[0]); 1926 } catch (java.lang.SecurityException ex) { 1927 Log.i(TAG, "fail to request location update, ignore", ex); 1928 } catch (IllegalArgumentException ex) { 1929 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1930 } 1931 } 1932 } 1933 1934 private void stopReceivingLocationUpdates() { 1935 if (mLocationManager != null) { 1936 for (int i = 0; i < mLocationListeners.length; i++) { 1937 try { 1938 mLocationManager.removeUpdates(mLocationListeners[i]); 1939 } catch (Exception ex) { 1940 Log.i(TAG, "fail to remove location listners, ignore", ex); 1941 } 1942 } 1943 } 1944 } 1945 1946 private Location getCurrentLocation() { 1947 // go in best to worst order 1948 for (int i = 0; i < mLocationListeners.length; i++) { 1949 Location l = mLocationListeners[i].current(); 1950 if (l != null) return l; 1951 } 1952 return null; 1953 } 1954 1955 private boolean isCameraIdle() { 1956 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1957 } 1958 1959 private boolean isImageCaptureIntent() { 1960 String action = getIntent().getAction(); 1961 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1962 } 1963 1964 private void setupCaptureParams() { 1965 Bundle myExtras = getIntent().getExtras(); 1966 if (myExtras != null) { 1967 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1968 mCropValue = myExtras.getString("crop"); 1969 } 1970 } 1971 1972 private void showPostCaptureAlert() { 1973 if (mIsImageCaptureIntent) { 1974 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1975 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1976 for (int id : pickIds) { 1977 View button = findViewById(id); 1978 ((View) button.getParent()).setVisibility(View.VISIBLE); 1979 } 1980 } 1981 } 1982 1983 private void hidePostCaptureAlert() { 1984 if (mIsImageCaptureIntent) { 1985 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1986 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1987 for (int id : pickIds) { 1988 View button = findViewById(id); 1989 ((View) button.getParent()).setVisibility(View.GONE); 1990 } 1991 } 1992 } 1993 1994 private int calculatePicturesRemaining() { 1995 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1996 return mPicturesRemaining; 1997 } 1998 1999 @Override 2000 public boolean onPrepareOptionsMenu(Menu menu) { 2001 super.onPrepareOptionsMenu(menu); 2002 // Only show the menu when camera is idle. 2003 for (int i = 0; i < menu.size(); i++) { 2004 menu.getItem(i).setVisible(isCameraIdle()); 2005 } 2006 2007 return true; 2008 } 2009 2010 @Override 2011 public boolean onCreateOptionsMenu(Menu menu) { 2012 super.onCreateOptionsMenu(menu); 2013 2014 if (mIsImageCaptureIntent) { 2015 // No options menu for attach mode. 2016 return false; 2017 } else { 2018 addBaseMenuItems(menu); 2019 } 2020 return true; 2021 } 2022 2023 private void addBaseMenuItems(Menu menu) { 2024 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 2025 MenuHelper.POSITION_GOTO_GALLERY, 2026 R.string.camera_gallery_photos_text) 2027 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 2028 public boolean onMenuItemClick(MenuItem item) { 2029 gotoGallery(); 2030 return true; 2031 } 2032 }); 2033 gallery.setIcon(android.R.drawable.ic_menu_gallery); 2034 mGalleryItems.add(gallery); 2035 2036 MenuItem item = menu.add(Menu.NONE, Menu.NONE, 2037 MenuHelper.POSITION_CAMERA_SETTING, R.string.settings) 2038 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 2039 public boolean onMenuItemClick(MenuItem item) { 2040 showOnScreenSettings(); 2041 return true; 2042 } 2043 }); 2044 item.setIcon(android.R.drawable.ic_menu_preferences); 2045 } 2046 2047 public boolean onSwitchChanged(Switcher source, boolean onOff) { 2048 if (onOff == SWITCH_VIDEO) { 2049 if (!isCameraIdle()) return false; 2050 MenuHelper.gotoVideoMode(this); 2051 finish(); 2052 } 2053 return true; 2054 } 2055 2056 public void onSharedPreferenceChanged( 2057 SharedPreferences preferences, String key) { 2058 // ignore the events after "onPause()" 2059 if (mPausing) return; 2060 2061 if (CameraSettings.KEY_RECORD_LOCATION.equals(key)) { 2062 mRecordLocation = RecordLocationPreference.get( 2063 preferences, getContentResolver()); 2064 if (mRecordLocation) { 2065 startReceivingLocationUpdates(); 2066 } else { 2067 stopReceivingLocationUpdates(); 2068 } 2069 } else { 2070 // All preferences except RECORD_LOCATION are camera parameters. 2071 // Call setCameraParameters to take effect now. 2072 setCameraParameters(); 2073 } 2074 } 2075 2076 @Override 2077 public void onUserInteraction() { 2078 super.onUserInteraction(); 2079 keepScreenOnAwhile(); 2080 } 2081 2082 private void resetScreenOn() { 2083 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2084 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2085 } 2086 2087 private void keepScreenOnAwhile() { 2088 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2089 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2090 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 2091 } 2092 2093 private static String[] mQualityStrings = {"superfine", "fine", "normal"}; 2094 private static String[] mQualityNumbers = SystemProperties.get( 2095 "ro.media.enc.jpeg.quality", "85,75,65").split(","); 2096 private static int DEFAULT_QUALITY = 85; 2097 2098 // Translate from a quality string to a quality number using the system 2099 // properties. 2100 private static int getQualityNumber(String jpegQuality) { 2101 // Find the index of the input string 2102 int index = Util.indexOf(mQualityStrings, jpegQuality); 2103 2104 if (index == -1 || index > mQualityNumbers.length - 1) { 2105 return DEFAULT_QUALITY; 2106 } 2107 2108 try { 2109 return Integer.parseInt(mQualityNumbers[index]); 2110 } catch (NumberFormatException ex) { 2111 return DEFAULT_QUALITY; 2112 } 2113 } 2114} 2115 2116class FocusRectangle extends View { 2117 2118 @SuppressWarnings("unused") 2119 private static final String TAG = "FocusRectangle"; 2120 2121 public FocusRectangle(Context context, AttributeSet attrs) { 2122 super(context, attrs); 2123 } 2124 2125 private void setDrawable(int resid) { 2126 setBackgroundDrawable(getResources().getDrawable(resid)); 2127 } 2128 2129 public void showStart() { 2130 setDrawable(R.drawable.focus_focusing); 2131 } 2132 2133 public void showSuccess() { 2134 setDrawable(R.drawable.focus_focused); 2135 } 2136 2137 public void showFail() { 2138 setDrawable(R.drawable.focus_focus_failed); 2139 } 2140 2141 public void clear() { 2142 setBackgroundDrawable(null); 2143 } 2144} 2145