Camera.java revision aa3cc2012a1ee0cc04e1244dd977cb8bb84683e4
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.ContentResolver; 23import android.content.Context; 24import android.content.Intent; 25import android.content.IntentFilter; 26import android.content.SharedPreferences; 27import android.content.res.Resources; 28import android.graphics.Bitmap; 29import android.graphics.BitmapFactory; 30import android.graphics.Matrix; 31import android.hardware.Camera.Parameters; 32import android.hardware.Camera.PictureCallback; 33import android.hardware.Camera.Size; 34import android.location.Location; 35import android.location.LocationManager; 36import android.location.LocationProvider; 37import android.media.AudioManager; 38import android.media.ToneGenerator; 39import android.net.Uri; 40import android.os.Bundle; 41import android.os.Debug; 42import android.os.Environment; 43import android.os.Handler; 44import android.os.Message; 45import android.os.SystemClock; 46import android.preference.PreferenceManager; 47import android.provider.MediaStore; 48import android.text.format.DateFormat; 49import android.util.AttributeSet; 50import android.util.Log; 51import android.view.GestureDetector; 52import android.view.KeyEvent; 53import android.view.LayoutInflater; 54import android.view.Menu; 55import android.view.MenuItem; 56import android.view.MotionEvent; 57import android.view.OrientationEventListener; 58import android.view.SurfaceHolder; 59import android.view.View; 60import android.view.ViewGroup; 61import android.view.Window; 62import android.view.WindowManager; 63import android.view.MenuItem.OnMenuItemClickListener; 64import android.widget.ImageView; 65import android.widget.ZoomButtonsController; 66 67import com.android.camera.gallery.Cancelable; 68import com.android.camera.gallery.IImage; 69import com.android.camera.gallery.IImageList; 70 71import java.io.File; 72import java.io.FileNotFoundException; 73import java.io.FileOutputStream; 74import java.io.IOException; 75import java.io.OutputStream; 76import java.util.ArrayList; 77import java.util.List; 78import java.util.StringTokenizer; 79 80/** 81 * Activity of the Camera which used to see preview and take pictures. 82 */ 83public class Camera extends Activity implements View.OnClickListener, 84 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 85 Switcher.OnSwitchListener, FlashButton.ModeChangeListener { 86 87 private static final String TAG = "camera"; 88 89 private static final int CROP_MSG = 1; 90 private static final int FIRST_TIME_INIT = 2; 91 private static final int RESTART_PREVIEW = 3; 92 private static final int CLEAR_SCREEN_DELAY = 4; 93 94 private static final int SCREEN_DELAY = 2 * 60 * 1000; 95 private static final int FOCUS_BEEP_VOLUME = 100; 96 97 public static final int MENU_SWITCH_TO_VIDEO = 0; 98 public static final int MENU_SWITCH_TO_CAMERA = 1; 99 public static final int MENU_FLASH_SETTING = 2; 100 public static final int MENU_FLASH_AUTO = 3; 101 public static final int MENU_FLASH_ON = 4; 102 public static final int MENU_FLASH_OFF = 5; 103 public static final int MENU_SETTINGS = 6; 104 public static final int MENU_GALLERY_PHOTOS = 7; 105 public static final int MENU_GALLERY_VIDEOS = 8; 106 public static final int MENU_SAVE_SELECT_PHOTOS = 30; 107 public static final int MENU_SAVE_NEW_PHOTO = 31; 108 public static final int MENU_SAVE_GALLERY_PHOTO = 34; 109 public static final int MENU_SAVE_GALLERY_VIDEO_PHOTO = 35; 110 public static final int MENU_SAVE_CAMERA_DONE = 36; 111 public static final int MENU_SAVE_CAMERA_VIDEO_DONE = 37; 112 113 private double mZoomValue; // The current zoom value. 114 private boolean mZooming = false; 115 private double mZoomStep; 116 private double mZoomMax; 117 public static final double ZOOM_STEP_MIN = 0.25; 118 public static final String ZOOM_STOP = "stop"; 119 public static final String ZOOM_IMMEDIATE = "zoom-immediate"; 120 public static final String ZOOM_CONTINUOUS = "zoom-continuous"; 121 public static final double ZOOM_MIN = 1.0; 122 public static final String ZOOM_SPEED ="99"; 123 124 // The parameter strings to communicate with camera driver. 125 public static final String PARM_ZOOM_STATE = "zoom-state"; 126 public static final String PARM_ZOOM_STEP = "zoom-step"; 127 public static final String PARM_ZOOM_TO_LEVEL = "zoom-to-level"; 128 public static final String PARM_ZOOM_SPEED = "zoom-speed"; 129 public static final String PARM_ZOOM_MAX = "max-picture-continuous-zoom"; 130 131 private Parameters mParameters; 132 133 private OrientationEventListener mOrientationListener; 134 private int mLastOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 135 private SharedPreferences mPreferences; 136 137 private static final int IDLE = 1; 138 private static final int SNAPSHOT_IN_PROGRESS = 2; 139 140 private static final boolean SWITCH_CAMERA = true; 141 private static final boolean SWITCH_VIDEO = false; 142 143 private int mStatus = IDLE; 144 private static final String sTempCropFilename = "crop-temp"; 145 146 private android.hardware.Camera mCameraDevice; 147 private VideoPreview mSurfaceView; 148 private SurfaceHolder mSurfaceHolder = null; 149 private ShutterButton mShutterButton; 150 private FocusRectangle mFocusRectangle; 151 private FlashButton mFlashButton; 152 private ImageView mGpsIndicator; 153 private ToneGenerator mFocusToneGenerator; 154 private ZoomButtonsController mZoomButtons; 155 private GestureDetector mGestureDetector; 156 private Switcher mSwitcher; 157 private boolean mStartPreviewFail = false; 158 159 // mPostCaptureAlert, mLastPictureButton, mThumbController 160 // are non-null only if isImageCaptureIntent() is true. 161 private ImageView mLastPictureButton; 162 private ThumbnailController mThumbController; 163 164 private int mViewFinderWidth, mViewFinderHeight; 165 166 private ImageCapture mImageCapture = null; 167 168 private boolean mPreviewing; 169 private boolean mPausing; 170 private boolean mFirstTimeInitialized; 171 private boolean mIsImageCaptureIntent; 172 private boolean mRecordLocation; 173 174 private static final int FOCUS_NOT_STARTED = 0; 175 private static final int FOCUSING = 1; 176 private static final int FOCUSING_SNAP_ON_FINISH = 2; 177 private static final int FOCUS_SUCCESS = 3; 178 private static final int FOCUS_FAIL = 4; 179 private int mFocusState = FOCUS_NOT_STARTED; 180 181 private ContentResolver mContentResolver; 182 private boolean mDidRegister = false; 183 184 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 185 186 private LocationManager mLocationManager = null; 187 188 // Use OneShotPreviewCallback to measure the time between 189 // JpegPictureCallback and preview. 190 private final OneShotPreviewCallback mOneShotPreviewCallback = 191 new OneShotPreviewCallback(); 192 private final ShutterCallback mShutterCallback = new ShutterCallback(); 193 private final RawPictureCallback mRawPictureCallback = 194 new RawPictureCallback(); 195 private final AutoFocusCallback mAutoFocusCallback = 196 new AutoFocusCallback(); 197 private final ZoomCallback mZoomCallback = new ZoomCallback(); 198 // Use the ErrorCallback to capture the crash count 199 // on the mediaserver 200 private final ErrorCallback mErrorCallback = new ErrorCallback(); 201 202 private long mFocusStartTime; 203 private long mFocusCallbackTime; 204 private long mCaptureStartTime; 205 private long mShutterCallbackTime; 206 private long mRawPictureCallbackTime; 207 private long mJpegPictureCallbackTime; 208 private int mPicturesRemaining; 209 210 // These latency time are for the CameraLatency test. 211 public long mAutoFocusTime; 212 public long mShutterLag; 213 public long mShutterAndRawPictureCallbackTime; 214 public long mJpegPictureCallbackTimeLag; 215 public long mRawPictureAndJpegPictureCallbackTime; 216 217 //Add the media server tag 218 public static boolean mMediaServerDied = false; 219 // Focus mode. Options are pref_camera_focusmode_entryvalues. 220 private String mFocusMode; 221 222 private final Handler mHandler = new MainHandler(); 223 224 /** 225 * This Handler is used to post message back onto the main thread of the 226 * application 227 */ 228 private class MainHandler extends Handler { 229 @Override 230 public void handleMessage(Message msg) { 231 switch (msg.what) { 232 case RESTART_PREVIEW: { 233 restartPreview(); 234 break; 235 } 236 237 case CLEAR_SCREEN_DELAY: { 238 getWindow().clearFlags( 239 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 240 break; 241 } 242 243 case FIRST_TIME_INIT: { 244 initializeFirstTime(); 245 break; 246 } 247 } 248 } 249 } 250 251 // Snapshots can only be taken after this is called. It should be called 252 // once only. We could have done these things in onCreate() but we want to 253 // make preview screen appear as soon as possible. 254 private void initializeFirstTime() { 255 if (mFirstTimeInitialized) return; 256 257 // Create orientation listenter. This should be done first because it 258 // takes some time to get first orientation. 259 mOrientationListener = 260 new OrientationEventListener(Camera.this) { 261 @Override 262 public void onOrientationChanged(int orientation) { 263 // We keep the last known orientation. So if the user 264 // first orient the camera then point the camera to 265 // floor/sky, we still have the correct orientation. 266 if (orientation != ORIENTATION_UNKNOWN) { 267 mLastOrientation = orientation; 268 } 269 } 270 }; 271 mOrientationListener.enable(); 272 273 // Initialize location sevice. 274 mLocationManager = (LocationManager) 275 getSystemService(Context.LOCATION_SERVICE); 276 readPreference(); 277 if (mRecordLocation) startReceivingLocationUpdates(); 278 279 checkStorage(); 280 281 // Initialize last picture button. 282 mContentResolver = getContentResolver(); 283 if (!mIsImageCaptureIntent) { 284 findViewById(R.id.camera_switch).setOnClickListener(this); 285 mLastPictureButton = 286 (ImageView) findViewById(R.id.review_thumbnail); 287 mLastPictureButton.setOnClickListener(this); 288 mThumbController = new ThumbnailController( 289 getResources(), mLastPictureButton, mContentResolver); 290 mThumbController.loadData(ImageManager.getLastImageThumbPath()); 291 // Update last image thumbnail. 292 updateThumbnailButton(); 293 } 294 295 // Initialize shutter button. 296 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 297 mShutterButton.setOnShutterButtonListener(this); 298 mShutterButton.setVisibility(View.VISIBLE); 299 300 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 301 updateFocusIndicator(); 302 303 // Initialize flash button 304 if (mParameters.getSupportedFlashModes() != null) { 305 mFlashButton = (FlashButton) findViewById(R.id.flash_button); 306 String flashMode = mPreferences.getString( 307 CameraSettings.KEY_FLASH_MODE, "auto"); 308 mFlashButton.setMode(flashMode); 309 mFlashButton.setVisibility(View.VISIBLE); 310 mFlashButton.setListener(this); 311 } 312 313 // Initialize GPS indicator. 314 mGpsIndicator = (ImageView) findViewById(R.id.gps_indicator); 315 mGpsIndicator.setImageResource(R.drawable.ic_camera_sym_gps); 316 317 ImageManager.ensureOSXCompatibleFolder(); 318 319 installIntentFilter(); 320 321 initializeFocusTone(); 322 323 initializeZoom(); 324 325 mFirstTimeInitialized = true; 326 } 327 328 private void updateThumbnailButton() { 329 // Update last image if URI is invalid and the storage is ready. 330 if (!mThumbController.isUriValid() && mPicturesRemaining >= 0) { 331 updateLastImage(); 332 } 333 mThumbController.updateDisplayIfNeeded(); 334 } 335 336 // If the activity is paused and resumed, this method will be called in 337 // onResume. 338 private void initializeSecondTime() { 339 // Start orientation listener as soon as possible because it takes 340 // some time to get first orientation. 341 mOrientationListener.enable(); 342 343 // Start location update if needed. 344 readPreference(); 345 if (mRecordLocation) startReceivingLocationUpdates(); 346 347 installIntentFilter(); 348 349 initializeFocusTone(); 350 351 checkStorage(); 352 353 if (!mIsImageCaptureIntent) { 354 updateThumbnailButton(); 355 } 356 } 357 358 private void initializeZoom() { 359 // Check if the phone has zoom capability. 360 String zoomState = mParameters.get(PARM_ZOOM_STATE); 361 if (zoomState == null) return; 362 363 mZoomValue = Double.parseDouble(mParameters.get(PARM_ZOOM_TO_LEVEL)); 364 mZoomMax = Double.parseDouble(mParameters.get(PARM_ZOOM_MAX)); 365 mZoomStep = Double.parseDouble(mParameters.get(PARM_ZOOM_STEP)); 366 mParameters.set(PARM_ZOOM_SPEED, ZOOM_SPEED); 367 mCameraDevice.setParameters(mParameters); 368 369 mGestureDetector = new GestureDetector(this, new ZoomGestureListener()); 370 mCameraDevice.setZoomCallback(mZoomCallback); 371 mZoomButtons = new ZoomButtonsController(mSurfaceView); 372 mZoomButtons.setAutoDismissed(true); 373 mZoomButtons.setZoomSpeed(100); 374 mZoomButtons.setOnZoomListener( 375 new ZoomButtonsController.OnZoomListener() { 376 public void onVisibilityChanged(boolean visible) { 377 if (visible) { 378 updateZoomButtonsEnabled(); 379 } 380 } 381 382 public void onZoom(boolean zoomIn) { 383 if (mZooming) return; 384 385 if (zoomIn) { 386 if (mZoomValue < mZoomMax) { 387 mZoomValue += mZoomStep; 388 zoomToLevel(ZOOM_CONTINUOUS); 389 } 390 } else { 391 if (mZoomValue > ZOOM_MIN) { 392 mZoomValue -= mZoomStep; 393 zoomToLevel(ZOOM_CONTINUOUS); 394 } 395 } 396 updateZoomButtonsEnabled(); 397 } 398 }); 399 } 400 401 private void zoomToLevel(String type) { 402 if (type == null) { 403 Log.e(TAG, "Zoom type is null."); 404 return; 405 } 406 if (mZoomValue > mZoomMax) mZoomValue = mZoomMax; 407 if (mZoomValue < ZOOM_MIN) mZoomValue = ZOOM_MIN; 408 409 // If the application sets a unchanged zoom value, the driver will stuck 410 // at the zoom state. This is a work-around to ensure the state is at 411 // "stop". 412 mParameters.set(PARM_ZOOM_STATE, ZOOM_STOP); 413 mCameraDevice.setParameters(mParameters); 414 415 mParameters.set(PARM_ZOOM_TO_LEVEL, Double.toString(mZoomValue)); 416 mParameters.set(PARM_ZOOM_STATE, type); 417 mCameraDevice.setParameters(mParameters); 418 419 if (ZOOM_CONTINUOUS.equals(type)) mZooming = true; 420 } 421 422 private void updateZoomButtonsEnabled() { 423 mZoomButtons.setZoomInEnabled(mZoomValue < mZoomMax); 424 mZoomButtons.setZoomOutEnabled(mZoomValue > ZOOM_MIN); 425 } 426 427 private class ZoomGestureListener extends 428 GestureDetector.SimpleOnGestureListener { 429 public boolean onDown(MotionEvent e) { 430 // Show zoom buttons only when preview is started and snapshot 431 // is not in progress. mZoomButtons may be null if it is not 432 // initialized. 433 if (!mPausing && isCameraIdle() && mPreviewing 434 && mZoomButtons != null) { 435 mZoomButtons.setVisible(true); 436 } 437 return true; 438 } 439 440 public boolean onDoubleTap(MotionEvent e) { 441 // Perform zoom only when preview is started and snapshot is not in 442 // progress. 443 if (mPausing || !isCameraIdle() || !mPreviewing 444 || mZoomButtons == null || mZooming) { 445 return false; 446 } 447 448 if (mZoomValue < mZoomMax) { 449 // Zoom in to the maximum. 450 while (mZoomValue < mZoomMax) { 451 mZoomValue += ZOOM_STEP_MIN; 452 zoomToLevel(ZOOM_IMMEDIATE); 453 // Wait for a while so we are not changing zoom too fast. 454 try { 455 Thread.currentThread().sleep(5); 456 } 457 catch (InterruptedException ex) { 458 } 459 } 460 } else { 461 // Zoom out to the minimum. 462 while (mZoomValue > ZOOM_MIN) { 463 mZoomValue -= ZOOM_STEP_MIN; 464 zoomToLevel(ZOOM_IMMEDIATE); 465 // Wait for a while so we are not changing zoom too fast. 466 try { 467 Thread.currentThread().sleep(5); 468 } 469 catch (InterruptedException ex) { 470 } 471 } 472 } 473 updateZoomButtonsEnabled(); 474 return true; 475 } 476 } 477 478 @Override 479 public boolean dispatchTouchEvent(MotionEvent m) { 480 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 481 return mGestureDetector.onTouchEvent(m); 482 } 483 return true; 484 } 485 486 LocationListener [] mLocationListeners = new LocationListener[] { 487 new LocationListener(LocationManager.GPS_PROVIDER), 488 new LocationListener(LocationManager.NETWORK_PROVIDER) 489 }; 490 491 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 492 @Override 493 public void onReceive(Context context, Intent intent) { 494 String action = intent.getAction(); 495 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 496 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 497 || action.equals(Intent.ACTION_MEDIA_CHECKING) 498 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 499 checkStorage(); 500 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 501 checkStorage(); 502 if (!mIsImageCaptureIntent) { 503 updateThumbnailButton(); 504 } 505 } 506 } 507 }; 508 509 private class LocationListener 510 implements android.location.LocationListener { 511 Location mLastLocation; 512 boolean mValid = false; 513 String mProvider; 514 515 public LocationListener(String provider) { 516 mProvider = provider; 517 mLastLocation = new Location(mProvider); 518 } 519 520 public void onLocationChanged(Location newLocation) { 521 if (newLocation.getLatitude() == 0.0 522 && newLocation.getLongitude() == 0.0) { 523 // Hack to filter out 0.0,0.0 locations 524 return; 525 } 526 // If GPS is available before start camera, we won't get status 527 // update so update GPS indicator when we receive data. 528 if (mRecordLocation 529 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 530 mGpsIndicator.setVisibility(View.VISIBLE); 531 } 532 mLastLocation.set(newLocation); 533 mValid = true; 534 } 535 536 public void onProviderEnabled(String provider) { 537 } 538 539 public void onProviderDisabled(String provider) { 540 mValid = false; 541 } 542 543 public void onStatusChanged( 544 String provider, int status, Bundle extras) { 545 switch(status) { 546 case LocationProvider.OUT_OF_SERVICE: 547 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 548 mValid = false; 549 if (mRecordLocation && 550 LocationManager.GPS_PROVIDER.equals(provider)) { 551 mGpsIndicator.setVisibility(View.INVISIBLE); 552 } 553 break; 554 } 555 } 556 } 557 558 public Location current() { 559 return mValid ? mLastLocation : null; 560 } 561 } 562 563 private final class OneShotPreviewCallback 564 implements android.hardware.Camera.PreviewCallback { 565 public void onPreviewFrame(byte[] data, 566 android.hardware.Camera camera) { 567 long now = System.currentTimeMillis(); 568 if (mJpegPictureCallbackTime != 0) { 569 mJpegPictureCallbackTimeLag = now - mJpegPictureCallbackTime; 570 Log.v(TAG, "mJpegPictureCallbackTimeLag = " 571 + mJpegPictureCallbackTimeLag + "ms"); 572 mJpegPictureCallbackTime = 0; 573 } else { 574 Log.v(TAG, "Got first frame"); 575 } 576 } 577 } 578 579 private final class ShutterCallback 580 implements android.hardware.Camera.ShutterCallback { 581 public void onShutter() { 582 mShutterCallbackTime = System.currentTimeMillis(); 583 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 584 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 585 clearFocusState(); 586 } 587 } 588 589 private final class RawPictureCallback implements PictureCallback { 590 public void onPictureTaken( 591 byte [] rawData, android.hardware.Camera camera) { 592 mRawPictureCallbackTime = System.currentTimeMillis(); 593 mShutterAndRawPictureCallbackTime = 594 mRawPictureCallbackTime - mShutterCallbackTime; 595 Log.v(TAG, "mShutterAndRawPictureCallbackTime = " 596 + mShutterAndRawPictureCallbackTime + "ms"); 597 } 598 } 599 600 private final class JpegPictureCallback implements PictureCallback { 601 Location mLocation; 602 603 public JpegPictureCallback(Location loc) { 604 mLocation = loc; 605 } 606 607 public void onPictureTaken( 608 final byte [] jpegData, final android.hardware.Camera camera) { 609 if (mPausing) { 610 return; 611 } 612 613 mJpegPictureCallbackTime = System.currentTimeMillis(); 614 mRawPictureAndJpegPictureCallbackTime = 615 mJpegPictureCallbackTime - mRawPictureCallbackTime; 616 Log.v(TAG, "mRawPictureAndJpegPictureCallbackTime = " 617 + mRawPictureAndJpegPictureCallbackTime + "ms"); 618 mImageCapture.storeImage(jpegData, camera, mLocation); 619 620 if (!mIsImageCaptureIntent) { 621 long delay = 1200 - ( 622 System.currentTimeMillis() - mRawPictureCallbackTime); 623 mHandler.sendEmptyMessageDelayed( 624 RESTART_PREVIEW, Math.max(delay, 0)); 625 } 626 } 627 } 628 629 private final class AutoFocusCallback 630 implements android.hardware.Camera.AutoFocusCallback { 631 public void onAutoFocus( 632 boolean focused, android.hardware.Camera camera) { 633 mFocusCallbackTime = System.currentTimeMillis(); 634 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 635 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 636 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 637 // Take the picture no matter focus succeeds or fails. No need 638 // to play the AF sound if we're about to play the shutter 639 // sound. 640 if (focused) { 641 mFocusState = FOCUS_SUCCESS; 642 } else { 643 mFocusState = FOCUS_FAIL; 644 } 645 mImageCapture.onSnap(); 646 } else if (mFocusState == FOCUSING) { 647 // User is half-pressing the focus key. Play the focus tone. 648 // Do not take the picture now. 649 ToneGenerator tg = mFocusToneGenerator; 650 if (tg != null) { 651 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 652 } 653 if (focused) { 654 mFocusState = FOCUS_SUCCESS; 655 } else { 656 mFocusState = FOCUS_FAIL; 657 } 658 } else if (mFocusState == FOCUS_NOT_STARTED) { 659 // User has released the focus key before focus completes. 660 // Do nothing. 661 } 662 updateFocusIndicator(); 663 } 664 } 665 666 private final class ErrorCallback 667 implements android.hardware.Camera.ErrorCallback { 668 public void onError(int error, android.hardware.Camera camera) { 669 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 670 mMediaServerDied = true; 671 Log.v(TAG, "media server died"); 672 } 673 } 674 } 675 676 private final class ZoomCallback 677 implements android.hardware.Camera.ZoomCallback { 678 public void onZoomUpdate(int zoomLevel, 679 android.hardware.Camera camera) { 680 mZoomValue = (double)zoomLevel / 1000; 681 mZooming = false; 682 } 683 } 684 685 private class ImageCapture { 686 687 private boolean mCancel = false; 688 689 private Uri mLastContentUri; 690 private Cancelable<Void> mAddImageCancelable; 691 692 Bitmap mCaptureOnlyBitmap; 693 694 private void storeImage(byte[] data, Location loc) { 695 try { 696 long dateTaken = System.currentTimeMillis(); 697 String name = createName(dateTaken) + ".jpg"; 698 mLastContentUri = ImageManager.addImage( 699 mContentResolver, 700 name, 701 dateTaken, 702 loc, // location for the database goes here 703 0, // the dsp will use the right orientation so 704 // don't "double set it" 705 ImageManager.CAMERA_IMAGE_BUCKET_NAME, 706 name); 707 if (mLastContentUri == null) { 708 // this means we got an error 709 mCancel = true; 710 } 711 if (!mCancel) { 712 mAddImageCancelable = ImageManager.storeImage( 713 mLastContentUri, mContentResolver, 714 0, null, data); 715 mAddImageCancelable.get(); 716 mAddImageCancelable = null; 717 ImageManager.setImageSize(mContentResolver, mLastContentUri, 718 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 719 name).length()); 720 } 721 } catch (Exception ex) { 722 Log.e(TAG, "Exception while compressing image.", ex); 723 } 724 } 725 726 public void storeImage(final byte[] data, 727 android.hardware.Camera camera, Location loc) { 728 if (!mIsImageCaptureIntent) { 729 storeImage(data, loc); 730 sendBroadcast(new Intent( 731 "com.android.camera.NEW_PICTURE", mLastContentUri)); 732 setLastPictureThumb(data, mImageCapture.getLastCaptureUri()); 733 mThumbController.updateDisplayIfNeeded(); 734 } else { 735 BitmapFactory.Options options = new BitmapFactory.Options(); 736 options.inSampleSize = 4; 737 mCaptureOnlyBitmap = BitmapFactory.decodeByteArray( 738 data, 0, data.length, options); 739 showPostCaptureAlert(); 740 } 741 } 742 743 /** 744 * Initiate the capture of an image. 745 */ 746 public void initiate() { 747 if (mCameraDevice == null) { 748 return; 749 } 750 751 mCancel = false; 752 753 capture(); 754 } 755 756 public Uri getLastCaptureUri() { 757 return mLastContentUri; 758 } 759 760 public Bitmap getLastBitmap() { 761 return mCaptureOnlyBitmap; 762 } 763 764 private void capture() { 765 mCaptureOnlyBitmap = null; 766 767 // Set rotation. 768 int orientation = mLastOrientation; 769 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 770 orientation += 90; 771 } 772 orientation = ImageManager.roundOrientation(orientation); 773 Log.v(TAG, "mLastOrientation = " + mLastOrientation 774 + ", orientation = " + orientation); 775 mParameters.setRotation(orientation); 776 777 // Clear previous GPS location from the parameters. 778 mParameters.removeGpsData(); 779 780 // Set GPS location. 781 Location loc = mRecordLocation ? getCurrentLocation() : null; 782 if (loc != null) { 783 double lat = loc.getLatitude(); 784 double lon = loc.getLongitude(); 785 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 786 787 if (hasLatLon) { 788 mParameters.setGpsLatitude(lat); 789 mParameters.setGpsLongitude(lon); 790 if (loc.hasAltitude()) { 791 mParameters.setGpsAltitude(loc.getAltitude()); 792 } else { 793 // for NETWORK_PROVIDER location provider, we may have 794 // no altitude information, but the driver needs it, so 795 // we fake one. 796 mParameters.setGpsAltitude(0); 797 } 798 if (loc.getTime() != 0) { 799 // Location.getTime() is UTC in milliseconds. 800 // gps-timestamp is UTC in seconds. 801 long utcTimeSeconds = loc.getTime() / 1000; 802 mParameters.setGpsTimestamp(utcTimeSeconds); 803 } 804 } else { 805 loc = null; 806 } 807 } 808 809 mCameraDevice.setParameters(mParameters); 810 811 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 812 new JpegPictureCallback(loc)); 813 mPreviewing = false; 814 } 815 816 public void onSnap() { 817 // If we are already in the middle of taking a snapshot then ignore. 818 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 819 return; 820 } 821 mCaptureStartTime = System.currentTimeMillis(); 822 823 // Don't check the filesystem here, we can't afford the latency. 824 // Instead, check the cached value which was calculated when the 825 // preview was restarted. 826 if (mPicturesRemaining < 1) { 827 updateStorageHint(mPicturesRemaining); 828 return; 829 } 830 831 mStatus = SNAPSHOT_IN_PROGRESS; 832 833 mImageCapture.initiate(); 834 } 835 836 private void clearLastBitmap() { 837 if (mCaptureOnlyBitmap != null) { 838 mCaptureOnlyBitmap.recycle(); 839 mCaptureOnlyBitmap = null; 840 } 841 } 842 } 843 844 private void setLastPictureThumb(byte[] data, Uri uri) { 845 BitmapFactory.Options options = new BitmapFactory.Options(); 846 options.inSampleSize = 16; 847 Bitmap lastPictureThumb = 848 BitmapFactory.decodeByteArray(data, 0, data.length, options); 849 mThumbController.setData(uri, lastPictureThumb); 850 } 851 852 private static String createName(long dateTaken) { 853 return DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString(); 854 } 855 856 @Override 857 public void onCreate(Bundle icicle) { 858 super.onCreate(icicle); 859 860 Window win = getWindow(); 861 win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 862 setContentView(R.layout.camera); 863 mSurfaceView = (VideoPreview) findViewById(R.id.camera_preview); 864 mViewFinderWidth = mSurfaceView.getLayoutParams().width; 865 mViewFinderHeight = mSurfaceView.getLayoutParams().height; 866 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 867 868 /* 869 * To reduce startup time, we start the preview in another thread. 870 * We make sure the preview is started at the end of onCreate. 871 */ 872 Thread startPreviewThread = new Thread(new Runnable() { 873 public void run() { 874 try { 875 mStartPreviewFail = false; 876 startPreview(); 877 } catch (CameraHardwareException e) { 878 mStartPreviewFail = true; 879 } 880 } 881 }); 882 startPreviewThread.start(); 883 884 // don't set mSurfaceHolder here. We have it set ONLY within 885 // surfaceChanged / surfaceDestroyed, other parts of the code 886 // assume that when it is set, the surface is also set. 887 SurfaceHolder holder = mSurfaceView.getHolder(); 888 holder.addCallback(this); 889 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 890 891 mIsImageCaptureIntent = isImageCaptureIntent(); 892 LayoutInflater inflater = getLayoutInflater(); 893 894 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 895 if (mIsImageCaptureIntent) { 896 View controlBar = inflater.inflate( 897 R.layout.attach_camera_control, rootView); 898 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 899 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 900 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 901 } else { 902 inflater.inflate(R.layout.camera_control, rootView); 903 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 904 mSwitcher.setOnSwitchListener(this); 905 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 906 } 907 908 // Make sure preview is started. 909 try { 910 startPreviewThread.join(); 911 if (mStartPreviewFail) showCameraErrorAndFinish(); 912 } catch (InterruptedException ex) { 913 // ignore 914 } 915 } 916 917 @Override 918 public void onStart() { 919 super.onStart(); 920 if (!mIsImageCaptureIntent) { 921 mSwitcher.setSwitch(SWITCH_CAMERA); 922 } 923 } 924 925 private void checkStorage() { 926 if (ImageManager.isMediaScannerScanning(getContentResolver())) { 927 mPicturesRemaining = MenuHelper.NO_STORAGE_ERROR; 928 } else { 929 calculatePicturesRemaining(); 930 } 931 updateStorageHint(mPicturesRemaining); 932 } 933 934 public void onClick(View v) { 935 switch (v.getId()) { 936 case R.id.btn_retake: 937 hidePostCaptureAlert(); 938 restartPreview(); 939 break; 940 case R.id.review_thumbnail: 941 if (isCameraIdle()) { 942 viewLastImage(); 943 } 944 break; 945 case R.id.btn_done: 946 doAttach(); 947 break; 948 case R.id.btn_cancel: 949 doCancel(); 950 } 951 } 952 953 private void doAttach() { 954 if (mPausing) { 955 return; 956 } 957 Bitmap bitmap = mImageCapture.getLastBitmap(); 958 959 String cropValue = null; 960 Uri saveUri = null; 961 962 Bundle myExtras = getIntent().getExtras(); 963 if (myExtras != null) { 964 saveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 965 cropValue = myExtras.getString("crop"); 966 } 967 968 969 if (cropValue == null) { 970 // First handle the no crop case -- just return the value. If the 971 // caller specifies a "save uri" then write the data to it's 972 // stream. Otherwise, pass back a scaled down version of the bitmap 973 // directly in the extras. 974 if (saveUri != null) { 975 OutputStream outputStream = null; 976 try { 977 outputStream = mContentResolver.openOutputStream(saveUri); 978 bitmap.compress(Bitmap.CompressFormat.JPEG, 75, 979 outputStream); 980 outputStream.close(); 981 982 setResult(RESULT_OK); 983 finish(); 984 } catch (IOException ex) { 985 // ignore exception 986 } finally { 987 if (outputStream != null) { 988 try { 989 outputStream.close(); 990 } catch (IOException ex) { 991 // ignore exception 992 } 993 } 994 } 995 } else { 996 float scale = .5F; 997 Matrix m = new Matrix(); 998 m.setScale(scale, scale); 999 1000 bitmap = Bitmap.createBitmap(bitmap, 0, 0, 1001 bitmap.getWidth(), 1002 bitmap.getHeight(), 1003 m, true); 1004 1005 setResult(RESULT_OK, 1006 new Intent("inline-data").putExtra("data", bitmap)); 1007 finish(); 1008 } 1009 } else { 1010 // Save the image to a temp file and invoke the cropper 1011 Uri tempUri = null; 1012 FileOutputStream tempStream = null; 1013 try { 1014 File path = getFileStreamPath(sTempCropFilename); 1015 path.delete(); 1016 tempStream = openFileOutput(sTempCropFilename, 0); 1017 bitmap.compress(Bitmap.CompressFormat.JPEG, 75, tempStream); 1018 tempStream.close(); 1019 tempUri = Uri.fromFile(path); 1020 } catch (FileNotFoundException ex) { 1021 setResult(Activity.RESULT_CANCELED); 1022 finish(); 1023 return; 1024 } catch (IOException ex) { 1025 setResult(Activity.RESULT_CANCELED); 1026 finish(); 1027 return; 1028 } finally { 1029 if (tempStream != null) { 1030 try { 1031 tempStream.close(); 1032 } catch (IOException ex) { 1033 // ignore exception 1034 } 1035 } 1036 } 1037 1038 Bundle newExtras = new Bundle(); 1039 if (cropValue.equals("circle")) { 1040 newExtras.putString("circleCrop", "true"); 1041 } 1042 if (saveUri != null) { 1043 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, saveUri); 1044 } else { 1045 newExtras.putBoolean("return-data", true); 1046 } 1047 1048 Intent cropIntent = new Intent(); 1049 cropIntent.setClass(Camera.this, CropImage.class); 1050 cropIntent.setData(tempUri); 1051 cropIntent.putExtras(newExtras); 1052 1053 startActivityForResult(cropIntent, CROP_MSG); 1054 } 1055 } 1056 1057 private void doCancel() { 1058 setResult(RESULT_CANCELED, new Intent()); 1059 finish(); 1060 } 1061 1062 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1063 if (mPausing) { 1064 return; 1065 } 1066 switch (button.getId()) { 1067 case R.id.shutter_button: 1068 doFocus(pressed); 1069 break; 1070 } 1071 } 1072 1073 public void onShutterButtonClick(ShutterButton button) { 1074 if (mPausing) { 1075 return; 1076 } 1077 switch (button.getId()) { 1078 case R.id.shutter_button: 1079 doSnap(); 1080 break; 1081 } 1082 } 1083 1084 private OnScreenHint mStorageHint; 1085 1086 private void updateStorageHint(int remaining) { 1087 String noStorageText = null; 1088 1089 if (remaining == MenuHelper.NO_STORAGE_ERROR) { 1090 String state = Environment.getExternalStorageState(); 1091 if (state == Environment.MEDIA_CHECKING || 1092 ImageManager.isMediaScannerScanning(getContentResolver())) { 1093 noStorageText = getString(R.string.preparing_sd); 1094 } else { 1095 noStorageText = getString(R.string.no_storage); 1096 } 1097 } else if (remaining < 1) { 1098 noStorageText = getString(R.string.not_enough_space); 1099 } 1100 1101 if (noStorageText != null) { 1102 if (mStorageHint == null) { 1103 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1104 } else { 1105 mStorageHint.setText(noStorageText); 1106 } 1107 mStorageHint.show(); 1108 } else if (mStorageHint != null) { 1109 mStorageHint.cancel(); 1110 mStorageHint = null; 1111 } 1112 } 1113 1114 private void installIntentFilter() { 1115 // install an intent filter to receive SD card related events. 1116 IntentFilter intentFilter = 1117 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1118 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1119 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED); 1120 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1121 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1122 intentFilter.addDataScheme("file"); 1123 registerReceiver(mReceiver, intentFilter); 1124 mDidRegister = true; 1125 } 1126 1127 private void initializeFocusTone() { 1128 // Initialize focus tone generator. 1129 try { 1130 mFocusToneGenerator = new ToneGenerator( 1131 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1132 } catch (Throwable ex) { 1133 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1134 mFocusToneGenerator = null; 1135 } 1136 } 1137 1138 private void readPreference() { 1139 mRecordLocation = mPreferences.getBoolean( 1140 "pref_camera_recordlocation_key", false); 1141 mFocusMode = mPreferences.getString( 1142 CameraSettings.KEY_FOCUS_MODE, 1143 getString(R.string.pref_camera_focusmode_default)); 1144 } 1145 1146 @Override 1147 public void onResume() { 1148 super.onResume(); 1149 1150 mPausing = false; 1151 mJpegPictureCallbackTime = 0; 1152 mImageCapture = new ImageCapture(); 1153 1154 // Start the preview if it is not started. 1155 if (!mPreviewing && !mStartPreviewFail) { 1156 try { 1157 startPreview(); 1158 } catch (CameraHardwareException e) { 1159 showCameraErrorAndFinish(); 1160 return; 1161 } 1162 } 1163 1164 if (mSurfaceHolder != null) { 1165 // If first time initialization is not finished, put it in the 1166 // message queue. 1167 if (!mFirstTimeInitialized) { 1168 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1169 } else { 1170 initializeSecondTime(); 1171 } 1172 } 1173 1174 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1175 } 1176 1177 private static ImageManager.DataLocation dataLocation() { 1178 return ImageManager.DataLocation.EXTERNAL; 1179 } 1180 1181 @Override 1182 protected void onPause() { 1183 mPausing = true; 1184 stopPreview(); 1185 // Close the camera now because other activities may need to use it. 1186 closeCamera(); 1187 1188 if (mFirstTimeInitialized) { 1189 mOrientationListener.disable(); 1190 mGpsIndicator.setVisibility(View.INVISIBLE); 1191 if (!mIsImageCaptureIntent) { 1192 mThumbController.storeData( 1193 ImageManager.getLastImageThumbPath()); 1194 } 1195 hidePostCaptureAlert(); 1196 } 1197 1198 if (mDidRegister) { 1199 unregisterReceiver(mReceiver); 1200 mDidRegister = false; 1201 } 1202 stopReceivingLocationUpdates(); 1203 1204 if (mFocusToneGenerator != null) { 1205 mFocusToneGenerator.release(); 1206 mFocusToneGenerator = null; 1207 } 1208 1209 if (mStorageHint != null) { 1210 mStorageHint.cancel(); 1211 mStorageHint = null; 1212 } 1213 1214 // If we are in an image capture intent and has taken 1215 // a picture, we just clear it in onPause. 1216 mImageCapture.clearLastBitmap(); 1217 mImageCapture = null; 1218 1219 // This is necessary to make the ZoomButtonsController unregister 1220 // its configuration change receiver. 1221 if (mZoomButtons != null) { 1222 mZoomButtons.setVisible(false); 1223 } 1224 1225 // Remove the messages in the event queue. 1226 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1227 mHandler.removeMessages(RESTART_PREVIEW); 1228 mHandler.removeMessages(FIRST_TIME_INIT); 1229 1230 super.onPause(); 1231 } 1232 1233 @Override 1234 protected void onActivityResult( 1235 int requestCode, int resultCode, Intent data) { 1236 switch (requestCode) { 1237 case CROP_MSG: { 1238 Intent intent = new Intent(); 1239 if (data != null) { 1240 Bundle extras = data.getExtras(); 1241 if (extras != null) { 1242 intent.putExtras(extras); 1243 } 1244 } 1245 setResult(resultCode, intent); 1246 finish(); 1247 1248 File path = getFileStreamPath(sTempCropFilename); 1249 path.delete(); 1250 1251 break; 1252 } 1253 } 1254 } 1255 1256 private boolean canTakePicture() { 1257 return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0); 1258 } 1259 1260 private void autoFocus() { 1261 // Initiate autofocus only when preview is started and snapshot is not 1262 // in progress. 1263 if (canTakePicture()) { 1264 Log.v(TAG, "Start autofocus."); 1265 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1266 mFocusStartTime = System.currentTimeMillis(); 1267 mFocusState = FOCUSING; 1268 updateFocusIndicator(); 1269 mCameraDevice.autoFocus(mAutoFocusCallback); 1270 } 1271 } 1272 1273 private void clearFocusState() { 1274 mFocusState = FOCUS_NOT_STARTED; 1275 updateFocusIndicator(); 1276 } 1277 1278 private void updateFocusIndicator() { 1279 if (mFocusRectangle == null) return; 1280 1281 if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) { 1282 mFocusRectangle.showStart(); 1283 } else if (mFocusState == FOCUS_SUCCESS) { 1284 mFocusRectangle.showSuccess(); 1285 } else if (mFocusState == FOCUS_FAIL) { 1286 mFocusRectangle.showFail(); 1287 } else { 1288 mFocusRectangle.clear(); 1289 } 1290 } 1291 1292 @Override 1293 public boolean onKeyDown(int keyCode, KeyEvent event) { 1294 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1295 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1296 1297 switch (keyCode) { 1298 case KeyEvent.KEYCODE_BACK: 1299 if (!isCameraIdle()) { 1300 // ignore backs while we're taking a picture 1301 return true; 1302 } 1303 break; 1304 case KeyEvent.KEYCODE_FOCUS: 1305 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1306 doFocus(true); 1307 } 1308 return true; 1309 case KeyEvent.KEYCODE_CAMERA: 1310 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1311 doSnap(); 1312 } 1313 return true; 1314 case KeyEvent.KEYCODE_DPAD_CENTER: 1315 // If we get a dpad center event without any focused view, move 1316 // the focus to the shutter button and press it. 1317 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1318 // Start auto-focus immediately to reduce shutter lag. After 1319 // the shutter button gets the focus, doFocus() will be 1320 // called again but it is fine. 1321 doFocus(true); 1322 if (mShutterButton.isInTouchMode()) { 1323 mShutterButton.requestFocusFromTouch(); 1324 } else { 1325 mShutterButton.requestFocus(); 1326 } 1327 mShutterButton.setPressed(true); 1328 } 1329 return true; 1330 } 1331 1332 return super.onKeyDown(keyCode, event); 1333 } 1334 1335 @Override 1336 public boolean onKeyUp(int keyCode, KeyEvent event) { 1337 switch (keyCode) { 1338 case KeyEvent.KEYCODE_FOCUS: 1339 if (mFirstTimeInitialized) { 1340 doFocus(false); 1341 } 1342 return true; 1343 } 1344 return super.onKeyUp(keyCode, event); 1345 } 1346 1347 private void doSnap() { 1348 // If the user has half-pressed the shutter and focus is completed, we 1349 // can take the photo right away. If the focus mode is infinity, we can 1350 // also take the photo. 1351 if (mFocusMode.equals(getString( 1352 R.string.pref_camera_focusmode_value_infinity)) 1353 || (mFocusState == FOCUS_SUCCESS 1354 || mFocusState == FOCUS_FAIL)) { 1355 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1356 mImageCapture.onSnap(); 1357 } else if (mFocusState == FOCUSING) { 1358 // Half pressing the shutter (i.e. the focus button event) will 1359 // already have requested AF for us, so just request capture on 1360 // focus here. 1361 mFocusState = FOCUSING_SNAP_ON_FINISH; 1362 } else if (mFocusState == FOCUS_NOT_STARTED) { 1363 // Focus key down event is dropped for some reasons. Just ignore. 1364 } 1365 } 1366 1367 private void doFocus(boolean pressed) { 1368 // Do the focus if the mode is auto. No focus needed in infinity mode. 1369 if (mFocusMode.equals(getString( 1370 R.string.pref_camera_focusmode_value_auto))) { 1371 if (pressed) { // Focus key down. 1372 autoFocus(); 1373 } else { // Focus key up. 1374 if (mFocusState != FOCUSING_SNAP_ON_FINISH) { 1375 // User releases half-pressed focus key. 1376 clearFocusState(); 1377 } 1378 } 1379 } 1380 } 1381 1382 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1383 // Make sure we have a surface in the holder before proceeding. 1384 if (holder.getSurface() == null) { 1385 Log.d(TAG, "holder.getSurface() == null"); 1386 return; 1387 } 1388 1389 // The mCameraDevice will be null if it fails to connect to the camera 1390 // hardware. In this case we will show a dialog and then finish the 1391 // activity, so it's OK to ignore it. 1392 if (mCameraDevice == null) return; 1393 1394 mSurfaceHolder = holder; 1395 mViewFinderWidth = w; 1396 mViewFinderHeight = h; 1397 1398 // Sometimes surfaceChanged is called after onPause. Ignore it. 1399 if (mPausing || isFinishing()) return; 1400 1401 // Set preview display if the surface is being created. Preview was 1402 // already started. 1403 if (holder.isCreating()) { 1404 setPreviewDisplay(holder); 1405 } 1406 1407 // If first time initialization is not finished, send a message to do 1408 // it later. We want to finish surfaceChanged as soon as possible to let 1409 // user see preview first. 1410 if (!mFirstTimeInitialized) { 1411 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1412 } else { 1413 initializeSecondTime(); 1414 } 1415 } 1416 1417 public void surfaceCreated(SurfaceHolder holder) { 1418 } 1419 1420 public void surfaceDestroyed(SurfaceHolder holder) { 1421 stopPreview(); 1422 mSurfaceHolder = null; 1423 } 1424 1425 private void closeCamera() { 1426 if (mCameraDevice != null) { 1427 CameraHolder.instance().release(); 1428 mCameraDevice = null; 1429 mPreviewing = false; 1430 } 1431 } 1432 1433 private void ensureCameraDevice() throws CameraHardwareException { 1434 if (mCameraDevice == null) { 1435 mCameraDevice = CameraHolder.instance().open(); 1436 } 1437 } 1438 1439 private void updateLastImage() { 1440 IImageList list = ImageManager.makeImageList( 1441 mContentResolver, 1442 dataLocation(), 1443 ImageManager.INCLUDE_IMAGES, 1444 ImageManager.SORT_ASCENDING, 1445 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1446 int count = list.getCount(); 1447 if (count > 0) { 1448 IImage image = list.getImageAt(count - 1); 1449 Uri uri = image.fullSizeImageUri(); 1450 mThumbController.setData(uri, image.miniThumbBitmap()); 1451 } else { 1452 mThumbController.setData(null, null); 1453 } 1454 list.close(); 1455 } 1456 1457 private void showCameraErrorAndFinish() { 1458 Resources ress = getResources(); 1459 Util.showFatalErrorAndFinish(Camera.this, 1460 ress.getString(R.string.camera_error_title), 1461 ress.getString(R.string.cannot_connect_camera)); 1462 } 1463 1464 private void restartPreview() { 1465 // make sure the surfaceview fills the whole screen when previewing 1466 mSurfaceView.setAspectRatio(VideoPreview.DONT_CARE); 1467 try { 1468 startPreview(); 1469 } catch (CameraHardwareException e) { 1470 showCameraErrorAndFinish(); 1471 return; 1472 } 1473 1474 // Calculate this in advance of each shot so we don't add to shutter 1475 // latency. It's true that someone else could write to the SD card in 1476 // the mean time and fill it, but that could have happened between the 1477 // shutter press and saving the JPEG too. 1478 calculatePicturesRemaining(); 1479 } 1480 1481 private void setPreviewDisplay(SurfaceHolder holder) { 1482 try { 1483 mCameraDevice.setPreviewDisplay(holder); 1484 } catch (Throwable ex) { 1485 closeCamera(); 1486 throw new RuntimeException("setPreviewDisplay failed", ex); 1487 } 1488 } 1489 1490 private void startPreview() throws CameraHardwareException { 1491 if (mPausing || isFinishing()) return; 1492 1493 ensureCameraDevice(); 1494 1495 // If we're previewing already, stop the preview first (this will blank 1496 // the screen). 1497 if (mPreviewing) stopPreview(); 1498 1499 setPreviewDisplay(mSurfaceHolder); 1500 1501 setCameraParameter(); 1502 1503 final long wallTimeStart = SystemClock.elapsedRealtime(); 1504 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1505 1506 // Set one shot preview callback for latency measurement. 1507 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1508 mCameraDevice.setErrorCallback(mErrorCallback); 1509 1510 try { 1511 Log.v(TAG, "startPreview"); 1512 mCameraDevice.startPreview(); 1513 } catch (Throwable ex) { 1514 closeCamera(); 1515 throw new RuntimeException("startPreview failed", ex); 1516 } 1517 mPreviewing = true; 1518 mStatus = IDLE; 1519 1520 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1521 long wallTimeEnd = SystemClock.elapsedRealtime(); 1522 if ((wallTimeEnd - wallTimeStart) > 3000) { 1523 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1524 + " ms. Thread time was" 1525 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1526 } 1527 1528 // Currently the camera driver resets the zoom back to 1.0 after taking 1529 // a picture. But setting zoom to original value from the application 1530 // does not work now. Set the value to 1.0 in the app as a work-around. 1531 if (mZoomButtons != null && mZoomValue != ZOOM_MIN) { 1532 mZoomValue = ZOOM_MIN; 1533 zoomToLevel(ZOOM_IMMEDIATE); 1534 } 1535 } 1536 1537 private void stopPreview() { 1538 if (mCameraDevice != null && mPreviewing) { 1539 Log.v(TAG, "stopPreview"); 1540 mCameraDevice.stopPreview(); 1541 } 1542 mPreviewing = false; 1543 // If auto focus was in progress, it would have been canceled. 1544 clearFocusState(); 1545 } 1546 1547 private void setCameraParameter() { 1548 mParameters = mCameraDevice.getParameters(); 1549 1550 // Set preview size. 1551 mParameters.setPreviewSize(mViewFinderWidth, mViewFinderHeight); 1552 1553 // Set picture size. 1554 List<Size> pictureSizes = mParameters.getSupportedPictureSizes(); 1555 if (pictureSizes != null) { 1556 String str = mPreferences.getString( 1557 CameraSettings.KEY_PICTURE_SIZE, 1558 getString(R.string.pref_camera_picturesize_default)); 1559 int width = Integer.parseInt(str.substring(0, str.indexOf('x'))); 1560 int height = Integer.parseInt(str.substring(str.indexOf('x') + 1)); 1561 for (Size size: pictureSizes) { 1562 if (size.width == width && size.height == height) { 1563 mParameters.setPictureSize(width, height); 1564 break; 1565 } 1566 } 1567 } 1568 1569 // Set JPEG quality. 1570 String jpegQuality = mPreferences.getString( 1571 CameraSettings.KEY_JPEG_QUALITY, 1572 getString(R.string.pref_camera_jpegquality_default)); 1573 mParameters.setJpegQuality(Integer.parseInt(jpegQuality)); 1574 1575 // Set flash mode. 1576 if (mParameters.getSupportedFlashModes() != null) { 1577 String flashMode = mPreferences.getString( 1578 CameraSettings.KEY_FLASH_MODE, "auto"); 1579 mParameters.setFlashMode(flashMode); 1580 } 1581 1582 mCameraDevice.setParameters(mParameters); 1583 } 1584 1585 private void gotoGallery() { 1586 MenuHelper.gotoCameraImageGallery(this); 1587 } 1588 1589 private void viewLastImage() { 1590 if (mThumbController.isUriValid()) { 1591 Uri targetUri = mThumbController.getUri(); 1592 targetUri = targetUri.buildUpon().appendQueryParameter( 1593 "bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); 1594 Intent intent = new Intent(this, ReviewImage.class); 1595 intent.setData(targetUri); 1596 intent.putExtra(MediaStore.EXTRA_FULL_SCREEN, true); 1597 intent.putExtra(MediaStore.EXTRA_SHOW_ACTION_ICONS, true); 1598 intent.putExtra("com.android.camera.ReviewMode", true); 1599 try { 1600 startActivity(intent); 1601 } catch (ActivityNotFoundException ex) { 1602 Log.e(TAG, "review image fail", ex); 1603 } 1604 } else { 1605 Log.e(TAG, "Can't view last image."); 1606 } 1607 } 1608 1609 private void startReceivingLocationUpdates() { 1610 if (mLocationManager != null) { 1611 try { 1612 mLocationManager.requestLocationUpdates( 1613 LocationManager.NETWORK_PROVIDER, 1614 1000, 1615 0F, 1616 mLocationListeners[1]); 1617 } catch (java.lang.SecurityException ex) { 1618 Log.i(TAG, "fail to request location update, ignore", ex); 1619 } catch (IllegalArgumentException ex) { 1620 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1621 } 1622 try { 1623 mLocationManager.requestLocationUpdates( 1624 LocationManager.GPS_PROVIDER, 1625 1000, 1626 0F, 1627 mLocationListeners[0]); 1628 } catch (java.lang.SecurityException ex) { 1629 Log.i(TAG, "fail to request location update, ignore", ex); 1630 } catch (IllegalArgumentException ex) { 1631 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1632 } 1633 } 1634 } 1635 1636 private void stopReceivingLocationUpdates() { 1637 if (mLocationManager != null) { 1638 for (int i = 0; i < mLocationListeners.length; i++) { 1639 try { 1640 mLocationManager.removeUpdates(mLocationListeners[i]); 1641 } catch (Exception ex) { 1642 Log.i(TAG, "fail to remove location listners, ignore", ex); 1643 } 1644 } 1645 } 1646 } 1647 1648 private Location getCurrentLocation() { 1649 // go in best to worst order 1650 for (int i = 0; i < mLocationListeners.length; i++) { 1651 Location l = mLocationListeners[i].current(); 1652 if (l != null) return l; 1653 } 1654 return null; 1655 } 1656 1657 private boolean isCameraIdle() { 1658 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1659 } 1660 1661 private boolean isImageCaptureIntent() { 1662 String action = getIntent().getAction(); 1663 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1664 } 1665 1666 private void showPostCaptureAlert() { 1667 if (mIsImageCaptureIntent) { 1668 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1669 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1670 for (int id : pickIds) { 1671 View button = findViewById(id); 1672 ((View) button.getParent()).setVisibility(View.VISIBLE); 1673 } 1674 } 1675 } 1676 1677 private void hidePostCaptureAlert() { 1678 if (mIsImageCaptureIntent) { 1679 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1680 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1681 for (int id : pickIds) { 1682 View button = findViewById(id); 1683 ((View) button.getParent()).setVisibility(View.GONE); 1684 } 1685 } 1686 } 1687 1688 private int calculatePicturesRemaining() { 1689 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1690 return mPicturesRemaining; 1691 } 1692 1693 @Override 1694 public boolean onPrepareOptionsMenu(Menu menu) { 1695 super.onPrepareOptionsMenu(menu); 1696 1697 for (int i = 1; i <= MenuHelper.MENU_ITEM_MAX; i++) { 1698 menu.setGroupVisible(i, false); 1699 } 1700 1701 // Only show the menu when camera is idle. 1702 if (isCameraIdle()) { 1703 menu.setGroupVisible(MenuHelper.GENERIC_ITEM, true); 1704 menu.setGroupVisible(MenuHelper.IMAGE_MODE_ITEM, true); 1705 } 1706 1707 return true; 1708 } 1709 1710 @Override 1711 public boolean onCreateOptionsMenu(Menu menu) { 1712 super.onCreateOptionsMenu(menu); 1713 1714 if (mIsImageCaptureIntent) { 1715 // No options menu for attach mode. 1716 return false; 1717 } else { 1718 addBaseMenuItems(menu); 1719 } 1720 return true; 1721 } 1722 1723 private void addBaseMenuItems(Menu menu) { 1724 MenuHelper.addSwitchModeMenuItem(menu, this, true); 1725 { 1726 MenuItem gallery = menu.add( 1727 MenuHelper.IMAGE_MODE_ITEM, MENU_GALLERY_PHOTOS, 0, 1728 R.string.camera_gallery_photos_text) 1729 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1730 public boolean onMenuItemClick(MenuItem item) { 1731 gotoGallery(); 1732 return true; 1733 } 1734 }); 1735 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1736 mGalleryItems.add(gallery); 1737 } 1738 { 1739 MenuItem gallery = menu.add( 1740 MenuHelper.VIDEO_MODE_ITEM, MENU_GALLERY_VIDEOS, 0, 1741 R.string.camera_gallery_photos_text) 1742 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1743 public boolean onMenuItemClick(MenuItem item) { 1744 gotoGallery(); 1745 return true; 1746 } 1747 }); 1748 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1749 mGalleryItems.add(gallery); 1750 } 1751 1752 MenuItem item = menu.add(MenuHelper.GENERIC_ITEM, MENU_SETTINGS, 1753 0, R.string.settings) 1754 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1755 public boolean onMenuItemClick(MenuItem item) { 1756 // Keep the camera instance for a while. 1757 // This avoids re-opening the camera and saves time. 1758 CameraHolder.instance().keep(); 1759 1760 Intent intent = new Intent(); 1761 intent.setClass(Camera.this, CameraSettings.class); 1762 startActivity(intent); 1763 return true; 1764 } 1765 }); 1766 item.setIcon(android.R.drawable.ic_menu_preferences); 1767 } 1768 1769 public boolean onSwitchChanged(Switcher source, boolean onOff) { 1770 if (onOff == SWITCH_VIDEO) { 1771 if (!isCameraIdle()) return false; 1772 MenuHelper.gotoVideoMode(this); 1773 finish(); 1774 } 1775 return true; 1776 } 1777 1778 public void onFlashModeChanged(String modeString) { 1779 mParameters.setFlashMode(modeString); 1780 mCameraDevice.setParameters(mParameters); 1781 SharedPreferences.Editor editor = mPreferences.edit(); 1782 editor.putString(CameraSettings.KEY_FLASH_MODE, modeString); 1783 editor.commit(); 1784 } 1785} 1786 1787class FocusRectangle extends View { 1788 1789 @SuppressWarnings("unused") 1790 private static final String TAG = "FocusRectangle"; 1791 1792 public FocusRectangle(Context context, AttributeSet attrs) { 1793 super(context, attrs); 1794 } 1795 1796 private void setDrawable(int resid) { 1797 setBackgroundDrawable(getResources().getDrawable(resid)); 1798 } 1799 1800 public void showStart() { 1801 setDrawable(R.drawable.focus_focusing); 1802 } 1803 1804 public void showSuccess() { 1805 setDrawable(R.drawable.focus_focused); 1806 } 1807 1808 public void showFail() { 1809 setDrawable(R.drawable.focus_focus_failed); 1810 } 1811 1812 public void clear() { 1813 setBackgroundDrawable(null); 1814 } 1815} 1816 1817// FlashButton changes state every time it is clicked. 1818// The ModeChangeListener notifies that event. 1819class FlashButton extends ImageView implements View.OnClickListener { 1820 private static final String TAG = "FlashButton"; 1821 1822 private static final int MODE_OFF = 0; 1823 private static final int MODE_ON = 1; 1824 private static final int MODE_AUTO = 2; 1825 1826 private static final String[] MODE_STRINGS = new String[] { 1827 "off", "on", "auto" 1828 }; 1829 1830 private static final int[] FLASH_IMAGES = new int[] { 1831 R.drawable.flash_off, 1832 R.drawable.flash_on, 1833 R.drawable.flash_auto 1834 }; 1835 1836 private int mCurrentMode; 1837 private ModeChangeListener mListener; 1838 1839 public interface ModeChangeListener { 1840 public void onFlashModeChanged(String modeString); 1841 } 1842 public FlashButton(Context context, AttributeSet attrs) { 1843 super(context, attrs); 1844 updateMode(MODE_AUTO); 1845 setOnClickListener(this); 1846 } 1847 1848 public void setMode(String modeString) { 1849 for (int i = 0; i < MODE_STRINGS.length; i++) { 1850 if (MODE_STRINGS[i].equals(modeString)) { 1851 updateModeIfNecessary(i); 1852 return; 1853 } 1854 } 1855 Log.w(TAG, "Unknown mode: " + modeString); 1856 } 1857 1858 public void setListener(ModeChangeListener listener) { 1859 mListener = listener; 1860 } 1861 1862 public void onClick(View v) { 1863 int nextMode = (mCurrentMode + 1) % FLASH_IMAGES.length; 1864 updateMode(nextMode); 1865 } 1866 1867 private void updateModeIfNecessary(int mode) { 1868 if (mode == mCurrentMode) return; 1869 if (mode < 0 || mode >= FLASH_IMAGES.length) { 1870 return; 1871 } 1872 updateMode(mode); 1873 } 1874 1875 private void updateMode(int mode) { 1876 mCurrentMode = mode; 1877 setImageResource(FLASH_IMAGES[mode]); 1878 if (mListener != null) { 1879 mListener.onFlashModeChanged(MODE_STRINGS[mode]); 1880 } 1881 } 1882} 1883