Camera.java revision 35bda2dc8ab95a7baf68b544cf97826aabff6210
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.SharedPreferences.OnSharedPreferenceChangeListener; 28import android.content.res.Resources; 29import android.graphics.Bitmap; 30import android.graphics.BitmapFactory; 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.Build; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Environment; 44import android.os.Handler; 45import android.os.Message; 46import android.os.SystemClock; 47import android.preference.PreferenceManager; 48import android.provider.MediaStore; 49import android.text.format.DateFormat; 50import android.util.AttributeSet; 51import android.util.Log; 52import android.view.GestureDetector; 53import android.view.KeyEvent; 54import android.view.LayoutInflater; 55import android.view.Menu; 56import android.view.MenuItem; 57import android.view.MotionEvent; 58import android.view.OrientationEventListener; 59import android.view.SurfaceHolder; 60import android.view.SurfaceView; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.Window; 64import android.view.WindowManager; 65import android.view.MenuItem.OnMenuItemClickListener; 66import android.widget.ImageView; 67import android.widget.ZoomButtonsController; 68 69import com.android.camera.gallery.IImage; 70import com.android.camera.gallery.IImageList; 71 72import java.io.File; 73import java.io.FileNotFoundException; 74import java.io.FileOutputStream; 75import java.io.IOException; 76import java.io.OutputStream; 77import java.util.ArrayList; 78import java.util.Collections; 79import java.util.List; 80 81/** 82 * Activity of the Camera which used to see preview and take pictures. 83 */ 84public class Camera extends Activity implements View.OnClickListener, 85 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 86 Switcher.OnSwitchListener, OnScreenSettings.OnVisibilityChangedListener, 87 OnSharedPreferenceChangeListener { 88 89 private static final String TAG = "camera"; 90 91 private static final int CROP_MSG = 1; 92 private static final int FIRST_TIME_INIT = 2; 93 private static final int RESTART_PREVIEW = 3; 94 private static final int CLEAR_SCREEN_DELAY = 4; 95 96 private static final String GPS_MODE_ON = "on"; 97 private static final String GPS_MODE_OFF = "off"; 98 99 private static final int SCREEN_DELAY = 2 * 60 * 1000; 100 private static final int FOCUS_BEEP_VOLUME = 100; 101 102 private double mZoomValue; // The current zoom value. 103 private double mZoomStep; 104 private double mZoomMax; 105 public static final double ZOOM_STEP_MIN = 0.25; 106 public static final String ZOOM_STOP = "stop"; 107 public static final String ZOOM_IMMEDIATE = "zoom-immediate"; 108 public static final String ZOOM_CONTINUOUS = "zoom-continuous"; 109 public static final double ZOOM_MIN = 1.0; 110 public static final String ZOOM_SPEED = "99"; 111 112 private Parameters mParameters; 113 114 // The non-standard parameter strings to communicate with camera driver. 115 // This will be removed in the future. 116 public static final String PARM_ZOOM_STATE = "mot-zoom-state"; 117 public static final String PARM_ZOOM_STEP = "mot-zoom-step"; 118 public static final String PARM_ZOOM_TO_LEVEL = "mot-zoom-to-level"; 119 public static final String PARM_ZOOM_SPEED = "mot-zoom-speed"; 120 public static final String PARM_ZOOM_MAX = "mot-max-picture-continuous-zoom"; 121 122 private OrientationEventListener mOrientationListener; 123 private int mLastOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 124 private SharedPreferences mPreferences; 125 126 private static final int IDLE = 1; 127 private static final int SNAPSHOT_IN_PROGRESS = 2; 128 129 private static final boolean SWITCH_CAMERA = true; 130 private static final boolean SWITCH_VIDEO = false; 131 132 private int mStatus = IDLE; 133 private static final String sTempCropFilename = "crop-temp"; 134 135 private android.hardware.Camera mCameraDevice; 136 private SurfaceView mSurfaceView; 137 private SurfaceHolder mSurfaceHolder = null; 138 private ShutterButton mShutterButton; 139 private FocusRectangle mFocusRectangle; 140 private IconIndicator mGpsIndicator; 141 private IconIndicator mFlashIndicator; 142 private ToneGenerator mFocusToneGenerator; 143 private ZoomButtonsController mZoomButtons; 144 private GestureDetector mGestureDetector; 145 private Switcher mSwitcher; 146 private boolean mStartPreviewFail = false; 147 148 // mPostCaptureAlert, mLastPictureButton, mThumbController 149 // are non-null only if isImageCaptureIntent() is true. 150 private ImageView mLastPictureButton; 151 private ThumbnailController mThumbController; 152 153 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 154 private String mCropValue; 155 private Uri mSaveUri; 156 157 private ImageCapture mImageCapture = null; 158 159 private boolean mPreviewing; 160 private boolean mPausing; 161 private boolean mFirstTimeInitialized; 162 private boolean mIsImageCaptureIntent; 163 private boolean mRecordLocation; 164 165 private static final int FOCUS_NOT_STARTED = 0; 166 private static final int FOCUSING = 1; 167 private static final int FOCUSING_SNAP_ON_FINISH = 2; 168 private static final int FOCUS_SUCCESS = 3; 169 private static final int FOCUS_FAIL = 4; 170 private int mFocusState = FOCUS_NOT_STARTED; 171 172 private ContentResolver mContentResolver; 173 private boolean mDidRegister = false; 174 175 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 176 177 private LocationManager mLocationManager = null; 178 179 // Use OneShotPreviewCallback to measure the time between 180 // JpegPictureCallback and preview. 181 private final OneShotPreviewCallback mOneShotPreviewCallback = 182 new OneShotPreviewCallback(); 183 private final ShutterCallback mShutterCallback = new ShutterCallback(); 184 private final RawPictureCallback mRawPictureCallback = 185 new RawPictureCallback(); 186 private final AutoFocusCallback mAutoFocusCallback = 187 new AutoFocusCallback(); 188 private final ZoomCallback mZoomCallback = new ZoomCallback(); 189 // Use the ErrorCallback to capture the crash count 190 // on the mediaserver 191 private final ErrorCallback mErrorCallback = new ErrorCallback(); 192 193 private long mFocusStartTime; 194 private long mFocusCallbackTime; 195 private long mCaptureStartTime; 196 private long mShutterCallbackTime; 197 private long mRawPictureCallbackTime; 198 private long mJpegPictureCallbackTime; 199 private int mPicturesRemaining; 200 201 // These latency time are for the CameraLatency test. 202 public long mAutoFocusTime; 203 public long mShutterLag; 204 public long mShutterAndRawPictureCallbackTime; 205 public long mJpegPictureCallbackTimeLag; 206 public long mRawPictureAndJpegPictureCallbackTime; 207 208 // Add the media server tag 209 public static boolean mMediaServerDied = false; 210 // Focus mode. Options are pref_camera_focusmode_entryvalues. 211 private String mFocusMode; 212 213 private final Handler mHandler = new MainHandler(); 214 private OnScreenSettings mSettings; 215 216 /** 217 * This Handler is used to post message back onto the main thread of the 218 * application 219 */ 220 private class MainHandler extends Handler { 221 @Override 222 public void handleMessage(Message msg) { 223 switch (msg.what) { 224 case RESTART_PREVIEW: { 225 restartPreview(); 226 break; 227 } 228 229 case CLEAR_SCREEN_DELAY: { 230 getWindow().clearFlags( 231 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 232 break; 233 } 234 235 case FIRST_TIME_INIT: { 236 initializeFirstTime(); 237 break; 238 } 239 } 240 } 241 } 242 243 // Snapshots can only be taken after this is called. It should be called 244 // once only. We could have done these things in onCreate() but we want to 245 // make preview screen appear as soon as possible. 246 private void initializeFirstTime() { 247 if (mFirstTimeInitialized) return; 248 249 // Create orientation listenter. This should be done first because it 250 // takes some time to get first orientation. 251 mOrientationListener = 252 new OrientationEventListener(Camera.this) { 253 @Override 254 public void onOrientationChanged(int orientation) { 255 // We keep the last known orientation. So if the user 256 // first orient the camera then point the camera to 257 // floor/sky, we still have the correct orientation. 258 if (orientation != ORIENTATION_UNKNOWN) { 259 mLastOrientation = orientation; 260 } 261 } 262 }; 263 mOrientationListener.enable(); 264 265 // Initialize location sevice. 266 mLocationManager = (LocationManager) 267 getSystemService(Context.LOCATION_SERVICE); 268 readPreference(); 269 if (mRecordLocation) startReceivingLocationUpdates(); 270 271 checkStorage(); 272 273 // Initialize last picture button. 274 mContentResolver = getContentResolver(); 275 if (!mIsImageCaptureIntent) { 276 findViewById(R.id.camera_switch).setOnClickListener(this); 277 mLastPictureButton = 278 (ImageView) findViewById(R.id.review_thumbnail); 279 mLastPictureButton.setOnClickListener(this); 280 mThumbController = new ThumbnailController( 281 getResources(), mLastPictureButton, mContentResolver); 282 mThumbController.loadData(ImageManager.getLastImageThumbPath()); 283 // Update last image thumbnail. 284 updateThumbnailButton(); 285 } 286 287 // Initialize shutter button. 288 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 289 mShutterButton.setOnShutterButtonListener(this); 290 mShutterButton.setVisibility(View.VISIBLE); 291 292 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 293 updateFocusIndicator(); 294 295 // Initialize GPS indicator. 296 mGpsIndicator = (IconIndicator) findViewById(R.id.gps_icon); 297 298 ImageManager.ensureOSXCompatibleFolder(); 299 300 installIntentFilter(); 301 302 initializeFocusTone(); 303 304 initializeZoom(); 305 306 mFirstTimeInitialized = true; 307 } 308 309 private void updateThumbnailButton() { 310 // Update last image if URI is invalid and the storage is ready. 311 if (!mThumbController.isUriValid() && mPicturesRemaining >= 0) { 312 updateLastImage(); 313 } 314 mThumbController.updateDisplayIfNeeded(); 315 } 316 317 // If the activity is paused and resumed, this method will be called in 318 // onResume. 319 private void initializeSecondTime() { 320 // Start orientation listener as soon as possible because it takes 321 // some time to get first orientation. 322 mOrientationListener.enable(); 323 324 // Start location update if needed. 325 readPreference(); 326 if (mRecordLocation) startReceivingLocationUpdates(); 327 328 installIntentFilter(); 329 330 initializeFocusTone(); 331 332 checkStorage(); 333 334 if (mZoomButtons != null) { 335 mZoomValue = Double.parseDouble( 336 mParameters.get(PARM_ZOOM_TO_LEVEL)); 337 mCameraDevice.setZoomCallback(mZoomCallback); 338 } 339 340 if (!mIsImageCaptureIntent) { 341 updateThumbnailButton(); 342 } 343 } 344 345 private void initializeZoom() { 346 // Check if the phone has zoom capability. 347 String zoomState = mParameters.get(PARM_ZOOM_STATE); 348 if (zoomState == null) return; 349 350 mZoomValue = Double.parseDouble(mParameters.get(PARM_ZOOM_TO_LEVEL)); 351 mZoomMax = Double.parseDouble(mParameters.get(PARM_ZOOM_MAX)); 352 mZoomStep = Double.parseDouble(mParameters.get(PARM_ZOOM_STEP)); 353 mParameters.set(PARM_ZOOM_SPEED, ZOOM_SPEED); 354 mCameraDevice.setParameters(mParameters); 355 356 mGestureDetector = new GestureDetector(this, new ZoomGestureListener()); 357 mCameraDevice.setZoomCallback(mZoomCallback); 358 mZoomButtons = new ZoomButtonsController(mSurfaceView); 359 mZoomButtons.setAutoDismissed(true); 360 mZoomButtons.setZoomSpeed(100); 361 mZoomButtons.setOnZoomListener( 362 new ZoomButtonsController.OnZoomListener() { 363 public void onVisibilityChanged(boolean visible) { 364 if (visible) { 365 updateZoomButtonsEnabled(); 366 } 367 } 368 369 public void onZoom(boolean zoomIn) { 370 if (isZooming()) return; 371 372 if (zoomIn) { 373 if (mZoomValue < mZoomMax) { 374 zoomToLevel(ZOOM_CONTINUOUS, mZoomValue + mZoomStep); 375 } 376 } else { 377 if (mZoomValue > ZOOM_MIN) { 378 zoomToLevel(ZOOM_CONTINUOUS, mZoomValue - mZoomStep); 379 } 380 } 381 } 382 }); 383 } 384 385 public void onVisibilityChanged(boolean visible) { 386 // When the on-screen setting is not displayed, we show the gripper. 387 // When the on-screen setting is displayed, we hide the gripper. 388 int reverseVisibility = visible ? View.INVISIBLE : View.VISIBLE; 389 findViewById(R.id.btn_gripper).setVisibility(reverseVisibility); 390 findViewById(R.id.indicator_bar).setVisibility(reverseVisibility); 391 392 if (visible) { 393 mPreferences.registerOnSharedPreferenceChangeListener(this); 394 } else { 395 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 396 } 397 } 398 399 private boolean isZooming() { 400 mParameters = mCameraDevice.getParameters(); 401 return "continuous".equals(mParameters.get(PARM_ZOOM_STATE)); 402 } 403 404 private void zoomToLevel(String type, double zoomValue) { 405 if (zoomValue > mZoomMax) zoomValue = mZoomMax; 406 if (zoomValue < ZOOM_MIN) zoomValue = ZOOM_MIN; 407 408 // If the application sets a unchanged zoom value, the driver will stuck 409 // at the zoom state. This is a work-around to ensure the state is at 410 // "stop". 411 mParameters.set(PARM_ZOOM_STATE, ZOOM_STOP); 412 mCameraDevice.setParameters(mParameters); 413 414 mParameters.set(PARM_ZOOM_TO_LEVEL, Double.toString(zoomValue)); 415 mParameters.set(PARM_ZOOM_STATE, type); 416 mCameraDevice.setParameters(mParameters); 417 418 if (ZOOM_IMMEDIATE.equals(type)) mZoomValue = zoomValue; 419 } 420 421 private void updateZoomButtonsEnabled() { 422 mZoomButtons.setZoomInEnabled(mZoomValue < mZoomMax); 423 mZoomButtons.setZoomOutEnabled(mZoomValue > ZOOM_MIN); 424 } 425 426 private class ZoomGestureListener extends 427 GestureDetector.SimpleOnGestureListener { 428 @Override 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 @Override 441 public boolean onDoubleTap(MotionEvent e) { 442 // Perform zoom only when preview is started and snapshot is not in 443 // progress. 444 if (mPausing || !isCameraIdle() || !mPreviewing 445 || mZoomButtons == null || isZooming()) { 446 return false; 447 } 448 449 if (mZoomValue < mZoomMax) { 450 // Zoom in to the maximum. 451 while (mZoomValue < mZoomMax) { 452 zoomToLevel(ZOOM_IMMEDIATE, mZoomValue + ZOOM_STEP_MIN); 453 // Wait for a while so we are not changing zoom too fast. 454 try { 455 Thread.sleep(5); 456 } catch (InterruptedException ex) { 457 } 458 } 459 } else { 460 // Zoom out to the minimum. 461 while (mZoomValue > ZOOM_MIN) { 462 zoomToLevel(ZOOM_IMMEDIATE, mZoomValue - ZOOM_STEP_MIN); 463 // Wait for a while so we are not changing zoom too fast. 464 try { 465 Thread.sleep(5); 466 } catch (InterruptedException ex) { 467 } 468 } 469 } 470 updateZoomButtonsEnabled(); 471 return true; 472 } 473 } 474 475 @Override 476 public boolean dispatchTouchEvent(MotionEvent m) { 477 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 478 return mGestureDetector.onTouchEvent(m); 479 } 480 return true; 481 } 482 483 LocationListener [] mLocationListeners = new LocationListener[] { 484 new LocationListener(LocationManager.GPS_PROVIDER), 485 new LocationListener(LocationManager.NETWORK_PROVIDER) 486 }; 487 488 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 489 @Override 490 public void onReceive(Context context, Intent intent) { 491 String action = intent.getAction(); 492 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 493 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 494 || action.equals(Intent.ACTION_MEDIA_CHECKING) 495 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 496 checkStorage(); 497 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 498 checkStorage(); 499 if (!mIsImageCaptureIntent) { 500 updateThumbnailButton(); 501 } 502 } 503 } 504 }; 505 506 private class LocationListener 507 implements android.location.LocationListener { 508 Location mLastLocation; 509 boolean mValid = false; 510 String mProvider; 511 512 public LocationListener(String provider) { 513 mProvider = provider; 514 mLastLocation = new Location(mProvider); 515 } 516 517 public void onLocationChanged(Location newLocation) { 518 if (newLocation.getLatitude() == 0.0 519 && newLocation.getLongitude() == 0.0) { 520 // Hack to filter out 0.0,0.0 locations 521 return; 522 } 523 // If GPS is available before start camera, we won't get status 524 // update so update GPS indicator when we receive data. 525 if (mRecordLocation 526 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 527 mGpsIndicator.setMode(GPS_MODE_ON); 528 } 529 mLastLocation.set(newLocation); 530 mValid = true; 531 } 532 533 public void onProviderEnabled(String provider) { 534 } 535 536 public void onProviderDisabled(String provider) { 537 mValid = false; 538 } 539 540 public void onStatusChanged( 541 String provider, int status, Bundle extras) { 542 switch(status) { 543 case LocationProvider.OUT_OF_SERVICE: 544 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 545 mValid = false; 546 if (mRecordLocation && 547 LocationManager.GPS_PROVIDER.equals(provider)) { 548 mGpsIndicator.setMode(GPS_MODE_OFF); 549 } 550 break; 551 } 552 } 553 } 554 555 public Location current() { 556 return mValid ? mLastLocation : null; 557 } 558 } 559 560 private final class OneShotPreviewCallback 561 implements android.hardware.Camera.PreviewCallback { 562 public void onPreviewFrame(byte[] data, 563 android.hardware.Camera camera) { 564 long now = System.currentTimeMillis(); 565 if (mJpegPictureCallbackTime != 0) { 566 mJpegPictureCallbackTimeLag = now - mJpegPictureCallbackTime; 567 Log.v(TAG, "mJpegPictureCallbackTimeLag = " 568 + mJpegPictureCallbackTimeLag + "ms"); 569 mJpegPictureCallbackTime = 0; 570 } else { 571 Log.v(TAG, "Got first frame"); 572 } 573 } 574 } 575 576 private final class ShutterCallback 577 implements android.hardware.Camera.ShutterCallback { 578 public void onShutter() { 579 mShutterCallbackTime = System.currentTimeMillis(); 580 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 581 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 582 clearFocusState(); 583 } 584 } 585 586 private final class RawPictureCallback implements PictureCallback { 587 public void onPictureTaken( 588 byte [] rawData, android.hardware.Camera camera) { 589 mRawPictureCallbackTime = System.currentTimeMillis(); 590 mShutterAndRawPictureCallbackTime = 591 mRawPictureCallbackTime - mShutterCallbackTime; 592 Log.v(TAG, "mShutterAndRawPictureCallbackTime = " 593 + mShutterAndRawPictureCallbackTime + "ms"); 594 } 595 } 596 597 private final class JpegPictureCallback implements PictureCallback { 598 Location mLocation; 599 600 public JpegPictureCallback(Location loc) { 601 mLocation = loc; 602 } 603 604 public void onPictureTaken( 605 final byte [] jpegData, final android.hardware.Camera camera) { 606 if (mPausing) { 607 return; 608 } 609 610 mJpegPictureCallbackTime = System.currentTimeMillis(); 611 mRawPictureAndJpegPictureCallbackTime = 612 mJpegPictureCallbackTime - mRawPictureCallbackTime; 613 Log.v(TAG, "mRawPictureAndJpegPictureCallbackTime = " 614 + mRawPictureAndJpegPictureCallbackTime + "ms"); 615 mImageCapture.storeImage(jpegData, camera, mLocation); 616 617 if (!mIsImageCaptureIntent) { 618 long delay = 1200 - ( 619 System.currentTimeMillis() - mRawPictureCallbackTime); 620 mHandler.sendEmptyMessageDelayed( 621 RESTART_PREVIEW, Math.max(delay, 0)); 622 } 623 } 624 } 625 626 private final class AutoFocusCallback 627 implements android.hardware.Camera.AutoFocusCallback { 628 public void onAutoFocus( 629 boolean focused, android.hardware.Camera camera) { 630 mFocusCallbackTime = System.currentTimeMillis(); 631 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 632 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 633 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 634 // Take the picture no matter focus succeeds or fails. No need 635 // to play the AF sound if we're about to play the shutter 636 // sound. 637 if (focused) { 638 mFocusState = FOCUS_SUCCESS; 639 } else { 640 mFocusState = FOCUS_FAIL; 641 } 642 mImageCapture.onSnap(); 643 } else if (mFocusState == FOCUSING) { 644 // User is half-pressing the focus key. Play the focus tone. 645 // Do not take the picture now. 646 ToneGenerator tg = mFocusToneGenerator; 647 if (tg != null) { 648 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 649 } 650 if (focused) { 651 mFocusState = FOCUS_SUCCESS; 652 } else { 653 mFocusState = FOCUS_FAIL; 654 } 655 } else if (mFocusState == FOCUS_NOT_STARTED) { 656 // User has released the focus key before focus completes. 657 // Do nothing. 658 } 659 updateFocusIndicator(); 660 } 661 } 662 663 private final class ErrorCallback 664 implements android.hardware.Camera.ErrorCallback { 665 public void onError(int error, android.hardware.Camera camera) { 666 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 667 mMediaServerDied = true; 668 Log.v(TAG, "media server died"); 669 } 670 } 671 } 672 673 private final class ZoomCallback 674 implements android.hardware.Camera.ZoomCallback { 675 public void onZoomUpdate(int zoomLevel, 676 android.hardware.Camera camera) { 677 mZoomValue = (double) zoomLevel / 1000; 678 Log.v(TAG, "ZoomCallback: zoom level=" + zoomLevel); 679 updateZoomButtonsEnabled(); 680 } 681 } 682 683 private class ImageCapture { 684 685 private boolean mCancel = false; 686 687 private Uri mLastContentUri; 688 689 byte[] mCaptureOnlyData; 690 691 // Returns the rotation degree in the jpeg header. 692 private int storeImage(byte[] data, Location loc) { 693 try { 694 long dateTaken = System.currentTimeMillis(); 695 String name = createName(dateTaken) + ".jpg"; 696 int[] degree = new int[1]; 697 mLastContentUri = ImageManager.addImage( 698 mContentResolver, 699 name, 700 dateTaken, 701 loc, // location from gps/network 702 ImageManager.CAMERA_IMAGE_BUCKET_NAME, name, 703 null, data, 704 degree); 705 if (mLastContentUri == null) { 706 // this means we got an error 707 mCancel = true; 708 } 709 if (!mCancel) { 710 ImageManager.setImageSize(mContentResolver, mLastContentUri, 711 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 712 name).length()); 713 } 714 return degree[0]; 715 } catch (Exception ex) { 716 Log.e(TAG, "Exception while compressing image.", ex); 717 return 0; 718 } 719 } 720 721 public void storeImage(final byte[] data, 722 android.hardware.Camera camera, Location loc) { 723 if (!mIsImageCaptureIntent) { 724 int degree = storeImage(data, loc); 725 sendBroadcast(new Intent( 726 "com.android.camera.NEW_PICTURE", mLastContentUri)); 727 setLastPictureThumb(data, degree, 728 mImageCapture.getLastCaptureUri()); 729 mThumbController.updateDisplayIfNeeded(); 730 } else { 731 mCaptureOnlyData = data; 732 showPostCaptureAlert(); 733 } 734 } 735 736 /** 737 * Initiate the capture of an image. 738 */ 739 public void initiate() { 740 if (mCameraDevice == null) { 741 return; 742 } 743 744 mCancel = false; 745 746 capture(); 747 } 748 749 public Uri getLastCaptureUri() { 750 return mLastContentUri; 751 } 752 753 public byte[] getLastCaptureData() { 754 return mCaptureOnlyData; 755 } 756 757 private void capture() { 758 mCaptureOnlyData = null; 759 760 // Set rotation. 761 int orientation = mLastOrientation; 762 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 763 orientation += 90; 764 } 765 orientation = ImageManager.roundOrientation(orientation); 766 Log.v(TAG, "mLastOrientation = " + mLastOrientation 767 + ", orientation = " + orientation); 768 mParameters.setRotation(orientation); 769 770 // Clear previous GPS location from the parameters. 771 mParameters.removeGpsData(); 772 773 // Set GPS location. 774 Location loc = mRecordLocation ? getCurrentLocation() : null; 775 if (loc != null) { 776 double lat = loc.getLatitude(); 777 double lon = loc.getLongitude(); 778 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 779 780 if (hasLatLon) { 781 mParameters.setGpsLatitude(lat); 782 mParameters.setGpsLongitude(lon); 783 if (loc.hasAltitude()) { 784 mParameters.setGpsAltitude(loc.getAltitude()); 785 } else { 786 // for NETWORK_PROVIDER location provider, we may have 787 // no altitude information, but the driver needs it, so 788 // we fake one. 789 mParameters.setGpsAltitude(0); 790 } 791 if (loc.getTime() != 0) { 792 // Location.getTime() is UTC in milliseconds. 793 // gps-timestamp is UTC in seconds. 794 long utcTimeSeconds = loc.getTime() / 1000; 795 mParameters.setGpsTimestamp(utcTimeSeconds); 796 } 797 } else { 798 loc = null; 799 } 800 } 801 802 mCameraDevice.setParameters(mParameters); 803 804 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 805 new JpegPictureCallback(loc)); 806 mPreviewing = false; 807 } 808 809 public void onSnap() { 810 // If we are already in the middle of taking a snapshot then ignore. 811 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 812 return; 813 } 814 mCaptureStartTime = System.currentTimeMillis(); 815 816 // Don't check the filesystem here, we can't afford the latency. 817 // Instead, check the cached value which was calculated when the 818 // preview was restarted. 819 if (mPicturesRemaining < 1) { 820 updateStorageHint(mPicturesRemaining); 821 return; 822 } 823 824 mStatus = SNAPSHOT_IN_PROGRESS; 825 826 mImageCapture.initiate(); 827 } 828 829 private void clearLastData() { 830 mCaptureOnlyData = null; 831 } 832 } 833 834 public boolean saveDataToFile(String filePath, byte[] data) { 835 FileOutputStream f = null; 836 try { 837 f = new FileOutputStream(filePath); 838 f.write(data); 839 } catch (IOException e) { 840 return false; 841 } finally { 842 MenuHelper.closeSilently(f); 843 } 844 return true; 845 } 846 847 private void setLastPictureThumb(byte[] data, int degree, Uri uri) { 848 BitmapFactory.Options options = new BitmapFactory.Options(); 849 options.inSampleSize = 16; 850 Bitmap lastPictureThumb = 851 BitmapFactory.decodeByteArray(data, 0, data.length, options); 852 lastPictureThumb = Util.rotate(lastPictureThumb, degree); 853 mThumbController.setData(uri, lastPictureThumb); 854 } 855 856 private static String createName(long dateTaken) { 857 return DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString(); 858 } 859 860 @Override 861 public void onCreate(Bundle icicle) { 862 super.onCreate(icicle); 863 864 Window win = getWindow(); 865 win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 866 setContentView(R.layout.camera); 867 mSurfaceView = (SurfaceView) findViewById(R.id.camera_preview); 868 869 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 870 871 /* 872 * To reduce startup time, we start the preview in another thread. 873 * We make sure the preview is started at the end of onCreate. 874 */ 875 Thread startPreviewThread = new Thread(new Runnable() { 876 public void run() { 877 try { 878 mStartPreviewFail = false; 879 startPreview(); 880 } catch (CameraHardwareException e) { 881 // In eng build, we throw the exception so that test tool 882 // can detect it and report it 883 if ("eng".equals(Build.TYPE)) { 884 throw new RuntimeException(e); 885 } 886 mStartPreviewFail = true; 887 } 888 } 889 }); 890 startPreviewThread.start(); 891 892 // don't set mSurfaceHolder here. We have it set ONLY within 893 // surfaceChanged / surfaceDestroyed, other parts of the code 894 // assume that when it is set, the surface is also set. 895 SurfaceHolder holder = mSurfaceView.getHolder(); 896 holder.addCallback(this); 897 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 898 899 mIsImageCaptureIntent = isImageCaptureIntent(); 900 if (mIsImageCaptureIntent) { 901 setupCaptureParams(); 902 } 903 904 LayoutInflater inflater = getLayoutInflater(); 905 906 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 907 if (mIsImageCaptureIntent) { 908 View controlBar = inflater.inflate( 909 R.layout.attach_camera_control, rootView); 910 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 911 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 912 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 913 } else { 914 inflater.inflate(R.layout.camera_control, rootView); 915 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 916 mSwitcher.setOnSwitchListener(this); 917 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 918 } 919 findViewById(R.id.btn_gripper) 920 .setOnTouchListener(new GripperTouchListener()); 921 922 mFlashIndicator = (IconIndicator) findViewById(R.id.flash_icon); 923 924 // Make sure preview is started. 925 try { 926 startPreviewThread.join(); 927 if (mStartPreviewFail) { 928 showCameraErrorAndFinish(); 929 return; 930 } 931 } catch (InterruptedException ex) { 932 // ignore 933 } 934 } 935 936 private class GripperTouchListener implements View.OnTouchListener { 937 public boolean onTouch(View view, MotionEvent event) { 938 switch (event.getAction()) { 939 case MotionEvent.ACTION_DOWN: 940 return true; 941 case MotionEvent.ACTION_UP: 942 showOnScreenSettings(); 943 return true; 944 } 945 return false; 946 } 947 } 948 949 @Override 950 public void onStart() { 951 super.onStart(); 952 if (!mIsImageCaptureIntent) { 953 mSwitcher.setSwitch(SWITCH_CAMERA); 954 } 955 } 956 957 private void checkStorage() { 958 if (ImageManager.isMediaScannerScanning(getContentResolver())) { 959 mPicturesRemaining = MenuHelper.NO_STORAGE_ERROR; 960 } else { 961 calculatePicturesRemaining(); 962 } 963 updateStorageHint(mPicturesRemaining); 964 } 965 966 private void showOnScreenSettings() { 967 if (mSettings == null) { 968 mSettings = new OnScreenSettings( 969 findViewById(R.id.camera_preview)); 970 CameraSettings helper = new CameraSettings(this, mParameters); 971 mSettings.setPreferenceScreen(helper 972 .getPreferenceScreen(R.xml.camera_preferences)); 973 mSettings.setOnVisibilityChangedListener(this); 974 } 975 mSettings.expandPanel(); 976 } 977 978 public void onClick(View v) { 979 switch (v.getId()) { 980 case R.id.btn_retake: 981 hidePostCaptureAlert(); 982 restartPreview(); 983 break; 984 case R.id.review_thumbnail: 985 if (isCameraIdle()) { 986 viewLastImage(); 987 } 988 break; 989 case R.id.btn_done: 990 doAttach(); 991 break; 992 case R.id.btn_cancel: 993 doCancel(); 994 } 995 } 996 997 private Bitmap createCaptureBitmap(byte[] data) { 998 // This is really stupid...we just want to read the orientation in 999 // the jpeg header. 1000 String filepath = ImageManager.getTempJpegPath(); 1001 int degree = 0; 1002 if (saveDataToFile(filepath, data)) { 1003 degree = ImageManager.getExifOrientation(filepath); 1004 new File(filepath).delete(); 1005 } 1006 1007 // Limit to 50k pixels so we can return it in the intent. 1008 Bitmap bitmap = Util.makeBitmap(data, 50*1024); 1009 bitmap = Util.rotate(bitmap, degree); 1010 return bitmap; 1011 } 1012 1013 private void doAttach() { 1014 if (mPausing) { 1015 return; 1016 } 1017 1018 byte[] data = mImageCapture.getLastCaptureData(); 1019 1020 if (mCropValue == null) { 1021 // First handle the no crop case -- just return the value. If the 1022 // caller specifies a "save uri" then write the data to it's 1023 // stream. Otherwise, pass back a scaled down version of the bitmap 1024 // directly in the extras. 1025 if (mSaveUri != null) { 1026 OutputStream outputStream = null; 1027 try { 1028 outputStream = mContentResolver.openOutputStream(mSaveUri); 1029 outputStream.write(data); 1030 outputStream.close(); 1031 1032 setResult(RESULT_OK); 1033 finish(); 1034 } catch (IOException ex) { 1035 // ignore exception 1036 } finally { 1037 Util.closeSilently(outputStream); 1038 } 1039 } else { 1040 Bitmap bitmap = createCaptureBitmap(data); 1041 setResult(RESULT_OK, 1042 new Intent("inline-data").putExtra("data", bitmap)); 1043 finish(); 1044 } 1045 } else { 1046 // Save the image to a temp file and invoke the cropper 1047 Uri tempUri = null; 1048 FileOutputStream tempStream = null; 1049 try { 1050 File path = getFileStreamPath(sTempCropFilename); 1051 path.delete(); 1052 tempStream = openFileOutput(sTempCropFilename, 0); 1053 tempStream.write(data); 1054 tempStream.close(); 1055 tempUri = Uri.fromFile(path); 1056 } catch (FileNotFoundException ex) { 1057 setResult(Activity.RESULT_CANCELED); 1058 finish(); 1059 return; 1060 } catch (IOException ex) { 1061 setResult(Activity.RESULT_CANCELED); 1062 finish(); 1063 return; 1064 } finally { 1065 Util.closeSilently(tempStream); 1066 } 1067 1068 Bundle newExtras = new Bundle(); 1069 if (mCropValue.equals("circle")) { 1070 newExtras.putString("circleCrop", "true"); 1071 } 1072 if (mSaveUri != null) { 1073 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 1074 } else { 1075 newExtras.putBoolean("return-data", true); 1076 } 1077 1078 Intent cropIntent = new Intent(); 1079 cropIntent.setClass(this, CropImage.class); 1080 cropIntent.setData(tempUri); 1081 cropIntent.putExtras(newExtras); 1082 1083 startActivityForResult(cropIntent, CROP_MSG); 1084 } 1085 } 1086 1087 private void doCancel() { 1088 setResult(RESULT_CANCELED, new Intent()); 1089 finish(); 1090 } 1091 1092 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1093 if (mPausing) { 1094 return; 1095 } 1096 switch (button.getId()) { 1097 case R.id.shutter_button: 1098 doFocus(pressed); 1099 break; 1100 } 1101 } 1102 1103 public void onShutterButtonClick(ShutterButton button) { 1104 if (mPausing) { 1105 return; 1106 } 1107 switch (button.getId()) { 1108 case R.id.shutter_button: 1109 doSnap(); 1110 break; 1111 } 1112 } 1113 1114 private OnScreenHint mStorageHint; 1115 1116 private void updateStorageHint(int remaining) { 1117 String noStorageText = null; 1118 1119 if (remaining == MenuHelper.NO_STORAGE_ERROR) { 1120 String state = Environment.getExternalStorageState(); 1121 if (state == Environment.MEDIA_CHECKING || 1122 ImageManager.isMediaScannerScanning(getContentResolver())) { 1123 noStorageText = getString(R.string.preparing_sd); 1124 } else { 1125 noStorageText = getString(R.string.no_storage); 1126 } 1127 } else if (remaining < 1) { 1128 noStorageText = getString(R.string.not_enough_space); 1129 } 1130 1131 if (noStorageText != null) { 1132 if (mStorageHint == null) { 1133 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1134 } else { 1135 mStorageHint.setText(noStorageText); 1136 } 1137 mStorageHint.show(); 1138 } else if (mStorageHint != null) { 1139 mStorageHint.cancel(); 1140 mStorageHint = null; 1141 } 1142 } 1143 1144 private void installIntentFilter() { 1145 // install an intent filter to receive SD card related events. 1146 IntentFilter intentFilter = 1147 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1148 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1149 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED); 1150 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1151 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1152 intentFilter.addDataScheme("file"); 1153 registerReceiver(mReceiver, intentFilter); 1154 mDidRegister = true; 1155 } 1156 1157 private void initializeFocusTone() { 1158 // Initialize focus tone generator. 1159 try { 1160 mFocusToneGenerator = new ToneGenerator( 1161 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1162 } catch (Throwable ex) { 1163 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1164 mFocusToneGenerator = null; 1165 } 1166 } 1167 1168 private void readPreference() { 1169 mRecordLocation = mPreferences.getBoolean( 1170 "pref_camera_recordlocation_key", false); 1171 mFocusMode = mPreferences.getString( 1172 CameraSettings.KEY_FOCUS_MODE, 1173 getString(R.string.pref_camera_focusmode_default)); 1174 } 1175 1176 @Override 1177 public void onResume() { 1178 super.onResume(); 1179 1180 mPausing = false; 1181 mJpegPictureCallbackTime = 0; 1182 mImageCapture = new ImageCapture(); 1183 1184 // Start the preview if it is not started. 1185 if (!mPreviewing && !mStartPreviewFail) { 1186 try { 1187 startPreview(); 1188 } catch (CameraHardwareException e) { 1189 showCameraErrorAndFinish(); 1190 return; 1191 } 1192 } 1193 1194 if (mSurfaceHolder != null) { 1195 // If first time initialization is not finished, put it in the 1196 // message queue. 1197 if (!mFirstTimeInitialized) { 1198 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1199 } else { 1200 initializeSecondTime(); 1201 } 1202 } 1203 keepScreenOnAwhile(); 1204 } 1205 1206 private static ImageManager.DataLocation dataLocation() { 1207 return ImageManager.DataLocation.EXTERNAL; 1208 } 1209 1210 @Override 1211 protected void onPause() { 1212 mPausing = true; 1213 stopPreview(); 1214 // Close the camera now because other activities may need to use it. 1215 closeCamera(); 1216 resetScreenOn(); 1217 1218 if (mSettings != null && mSettings.isVisible()) { 1219 mSettings.setVisible(false); 1220 } 1221 1222 if (mFirstTimeInitialized) { 1223 mOrientationListener.disable(); 1224 mGpsIndicator.setMode(GPS_MODE_OFF); 1225 if (!mIsImageCaptureIntent) { 1226 mThumbController.storeData( 1227 ImageManager.getLastImageThumbPath()); 1228 } 1229 hidePostCaptureAlert(); 1230 } 1231 1232 if (mDidRegister) { 1233 unregisterReceiver(mReceiver); 1234 mDidRegister = false; 1235 } 1236 stopReceivingLocationUpdates(); 1237 1238 if (mFocusToneGenerator != null) { 1239 mFocusToneGenerator.release(); 1240 mFocusToneGenerator = null; 1241 } 1242 1243 if (mStorageHint != null) { 1244 mStorageHint.cancel(); 1245 mStorageHint = null; 1246 } 1247 1248 // If we are in an image capture intent and has taken 1249 // a picture, we just clear it in onPause. 1250 mImageCapture.clearLastData(); 1251 mImageCapture = null; 1252 1253 // This is necessary to make the ZoomButtonsController unregister 1254 // its configuration change receiver. 1255 if (mZoomButtons != null) { 1256 mZoomButtons.setVisible(false); 1257 } 1258 1259 // Remove the messages in the event queue. 1260 mHandler.removeMessages(RESTART_PREVIEW); 1261 mHandler.removeMessages(FIRST_TIME_INIT); 1262 1263 super.onPause(); 1264 } 1265 1266 @Override 1267 protected void onActivityResult( 1268 int requestCode, int resultCode, Intent data) { 1269 switch (requestCode) { 1270 case CROP_MSG: { 1271 Intent intent = new Intent(); 1272 if (data != null) { 1273 Bundle extras = data.getExtras(); 1274 if (extras != null) { 1275 intent.putExtras(extras); 1276 } 1277 } 1278 setResult(resultCode, intent); 1279 finish(); 1280 1281 File path = getFileStreamPath(sTempCropFilename); 1282 path.delete(); 1283 1284 break; 1285 } 1286 } 1287 } 1288 1289 private boolean canTakePicture() { 1290 return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0); 1291 } 1292 1293 private void autoFocus() { 1294 // Initiate autofocus only when preview is started and snapshot is not 1295 // in progress. 1296 if (canTakePicture()) { 1297 Log.v(TAG, "Start autofocus."); 1298 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1299 mFocusStartTime = System.currentTimeMillis(); 1300 mFocusState = FOCUSING; 1301 updateFocusIndicator(); 1302 mCameraDevice.autoFocus(mAutoFocusCallback); 1303 } 1304 } 1305 1306 private void cancelAutoFocus() { 1307 // User releases half-pressed focus key. 1308 if (mFocusState == FOCUSING || mFocusState == FOCUS_SUCCESS 1309 || mFocusState == FOCUS_FAIL) { 1310 Log.v(TAG, "Cancel autofocus."); 1311 mCameraDevice.cancelAutoFocus(); 1312 } 1313 if (mFocusState != FOCUSING_SNAP_ON_FINISH) { 1314 clearFocusState(); 1315 } 1316 } 1317 1318 private void clearFocusState() { 1319 mFocusState = FOCUS_NOT_STARTED; 1320 updateFocusIndicator(); 1321 } 1322 1323 private void updateFocusIndicator() { 1324 if (mFocusRectangle == null) return; 1325 1326 if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) { 1327 mFocusRectangle.showStart(); 1328 } else if (mFocusState == FOCUS_SUCCESS) { 1329 mFocusRectangle.showSuccess(); 1330 } else if (mFocusState == FOCUS_FAIL) { 1331 mFocusRectangle.showFail(); 1332 } else { 1333 mFocusRectangle.clear(); 1334 } 1335 } 1336 1337 @Override 1338 public void onBackPressed() { 1339 if (!isCameraIdle()) { 1340 // ignore backs while we're taking a picture 1341 return; 1342 } 1343 super.onBackPressed(); 1344 } 1345 1346 @Override 1347 public boolean onKeyDown(int keyCode, KeyEvent event) { 1348 switch (keyCode) { 1349 case KeyEvent.KEYCODE_FOCUS: 1350 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1351 doFocus(true); 1352 } 1353 return true; 1354 case KeyEvent.KEYCODE_CAMERA: 1355 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1356 doSnap(); 1357 } 1358 return true; 1359 case KeyEvent.KEYCODE_DPAD_CENTER: 1360 // If we get a dpad center event without any focused view, move 1361 // the focus to the shutter button and press it. 1362 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1363 // Start auto-focus immediately to reduce shutter lag. After 1364 // the shutter button gets the focus, doFocus() will be 1365 // called again but it is fine. 1366 doFocus(true); 1367 if (mShutterButton.isInTouchMode()) { 1368 mShutterButton.requestFocusFromTouch(); 1369 } else { 1370 mShutterButton.requestFocus(); 1371 } 1372 mShutterButton.setPressed(true); 1373 } 1374 return true; 1375 } 1376 1377 return super.onKeyDown(keyCode, event); 1378 } 1379 1380 @Override 1381 public boolean onKeyUp(int keyCode, KeyEvent event) { 1382 switch (keyCode) { 1383 case KeyEvent.KEYCODE_FOCUS: 1384 if (mFirstTimeInitialized) { 1385 doFocus(false); 1386 } 1387 return true; 1388 case KeyEvent.KEYCODE_MENU: 1389 if (mIsImageCaptureIntent) { 1390 showOnScreenSettings(); 1391 return true; 1392 } 1393 break; 1394 } 1395 return super.onKeyUp(keyCode, event); 1396 } 1397 1398 private void doSnap() { 1399 // If the user has half-pressed the shutter and focus is completed, we 1400 // can take the photo right away. If the focus mode is infinity, we can 1401 // also take the photo. 1402 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1403 || (mFocusState == FOCUS_SUCCESS 1404 || mFocusState == FOCUS_FAIL)) { 1405 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1406 mImageCapture.onSnap(); 1407 } else if (mFocusState == FOCUSING) { 1408 // Half pressing the shutter (i.e. the focus button event) will 1409 // already have requested AF for us, so just request capture on 1410 // focus here. 1411 mFocusState = FOCUSING_SNAP_ON_FINISH; 1412 } else if (mFocusState == FOCUS_NOT_STARTED) { 1413 // Focus key down event is dropped for some reasons. Just ignore. 1414 } 1415 } 1416 1417 private void doFocus(boolean pressed) { 1418 // Do the focus if the mode is not infinity. 1419 if (!mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)) { 1420 if (pressed) { // Focus key down. 1421 autoFocus(); 1422 } else { // Focus key up. 1423 cancelAutoFocus(); 1424 } 1425 } 1426 } 1427 1428 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1429 // Make sure we have a surface in the holder before proceeding. 1430 if (holder.getSurface() == null) { 1431 Log.d(TAG, "holder.getSurface() == null"); 1432 return; 1433 } 1434 1435 // The mCameraDevice will be null if it fails to connect to the camera 1436 // hardware. In this case we will show a dialog and then finish the 1437 // activity, so it's OK to ignore it. 1438 if (mCameraDevice == null) return; 1439 1440 mSurfaceHolder = holder; 1441 1442 // Sometimes surfaceChanged is called after onPause. Ignore it. 1443 if (mPausing || isFinishing()) return; 1444 1445 // Set preview display if the surface is being created. Preview was 1446 // already started. 1447 if (holder.isCreating()) { 1448 setPreviewDisplay(holder); 1449 } 1450 1451 // If first time initialization is not finished, send a message to do 1452 // it later. We want to finish surfaceChanged as soon as possible to let 1453 // user see preview first. 1454 if (!mFirstTimeInitialized) { 1455 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1456 } else { 1457 initializeSecondTime(); 1458 } 1459 } 1460 1461 public void surfaceCreated(SurfaceHolder holder) { 1462 } 1463 1464 public void surfaceDestroyed(SurfaceHolder holder) { 1465 stopPreview(); 1466 mSurfaceHolder = null; 1467 } 1468 1469 private void closeCamera() { 1470 if (mCameraDevice != null) { 1471 CameraHolder.instance().release(); 1472 mCameraDevice = null; 1473 mPreviewing = false; 1474 } 1475 } 1476 1477 private void ensureCameraDevice() throws CameraHardwareException { 1478 if (mCameraDevice == null) { 1479 mCameraDevice = CameraHolder.instance().open(); 1480 } 1481 } 1482 1483 private void updateLastImage() { 1484 IImageList list = ImageManager.makeImageList( 1485 mContentResolver, 1486 dataLocation(), 1487 ImageManager.INCLUDE_IMAGES, 1488 ImageManager.SORT_ASCENDING, 1489 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1490 int count = list.getCount(); 1491 if (count > 0) { 1492 IImage image = list.getImageAt(count - 1); 1493 Uri uri = image.fullSizeImageUri(); 1494 mThumbController.setData(uri, image.miniThumbBitmap()); 1495 } else { 1496 mThumbController.setData(null, null); 1497 } 1498 list.close(); 1499 } 1500 1501 private void showCameraErrorAndFinish() { 1502 Resources ress = getResources(); 1503 Util.showFatalErrorAndFinish(Camera.this, 1504 ress.getString(R.string.camera_error_title), 1505 ress.getString(R.string.cannot_connect_camera)); 1506 } 1507 1508 private void restartPreview() { 1509 // make sure the surfaceview fills the whole screen when previewing 1510 try { 1511 startPreview(); 1512 } catch (CameraHardwareException e) { 1513 showCameraErrorAndFinish(); 1514 return; 1515 } 1516 1517 // Calculate this in advance of each shot so we don't add to shutter 1518 // latency. It's true that someone else could write to the SD card in 1519 // the mean time and fill it, but that could have happened between the 1520 // shutter press and saving the JPEG too. 1521 calculatePicturesRemaining(); 1522 } 1523 1524 private void setPreviewDisplay(SurfaceHolder holder) { 1525 try { 1526 mCameraDevice.setPreviewDisplay(holder); 1527 } catch (Throwable ex) { 1528 closeCamera(); 1529 throw new RuntimeException("setPreviewDisplay failed", ex); 1530 } 1531 } 1532 1533 private void startPreview() throws CameraHardwareException { 1534 if (mPausing || isFinishing()) return; 1535 1536 ensureCameraDevice(); 1537 1538 // If we're previewing already, stop the preview first (this will blank 1539 // the screen). 1540 if (mPreviewing) stopPreview(); 1541 1542 setPreviewDisplay(mSurfaceHolder); 1543 setCameraParameters(); 1544 1545 final long wallTimeStart = SystemClock.elapsedRealtime(); 1546 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1547 1548 // Set one shot preview callback for latency measurement. 1549 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1550 mCameraDevice.setErrorCallback(mErrorCallback); 1551 1552 try { 1553 Log.v(TAG, "startPreview"); 1554 mCameraDevice.startPreview(); 1555 } catch (Throwable ex) { 1556 closeCamera(); 1557 throw new RuntimeException("startPreview failed", ex); 1558 } 1559 mPreviewing = true; 1560 mStatus = IDLE; 1561 1562 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1563 long wallTimeEnd = SystemClock.elapsedRealtime(); 1564 if ((wallTimeEnd - wallTimeStart) > 3000) { 1565 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1566 + " ms. Thread time was" 1567 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1568 } 1569 } 1570 1571 private void stopPreview() { 1572 if (mCameraDevice != null && mPreviewing) { 1573 Log.v(TAG, "stopPreview"); 1574 mCameraDevice.stopPreview(); 1575 } 1576 mPreviewing = false; 1577 // If auto focus was in progress, it would have been canceled. 1578 clearFocusState(); 1579 } 1580 1581 private Size getOptimalPreviewSize(List<Size> sizes, double targetRatio) { 1582 final double ASPECT_TOLERANCE = 0.05; 1583 if (sizes == null) return null; 1584 1585 Size optimalSize = null; 1586 double minDiff = Double.MAX_VALUE; 1587 1588 int targetHeight = mSurfaceView.getHeight(); 1589 if (targetHeight <= 0) { 1590 // We don't know the size of SurefaceView, use screen height 1591 WindowManager windowManager = (WindowManager) 1592 getSystemService(Context.WINDOW_SERVICE); 1593 targetHeight = windowManager.getDefaultDisplay().getHeight(); 1594 } 1595 1596 // Try to find an size match aspect ratio and size 1597 for (Size size : sizes) { 1598 double ratio = (double) size.width / size.height; 1599 if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 1600 if (Math.abs(size.height - targetHeight) < minDiff) { 1601 optimalSize = size; 1602 minDiff = Math.abs(size.height - targetHeight); 1603 } 1604 } 1605 1606 // Cannot find the one match the aspect ratio, ignore the requirement 1607 if (optimalSize == null) { 1608 Log.v(TAG, "No preview size match the aspect ratio"); 1609 minDiff = Double.MAX_VALUE; 1610 for (Size size : sizes) { 1611 if (Math.abs(size.height - targetHeight) < minDiff) { 1612 optimalSize = size; 1613 minDiff = Math.abs(size.height - targetHeight); 1614 } 1615 } 1616 } 1617 Log.v(TAG, String.format( 1618 "Optimal preview size is %sx%s", 1619 optimalSize.width, optimalSize.height)); 1620 return optimalSize; 1621 } 1622 1623 private static boolean isSupported(String value, List<String> supported) { 1624 return supported == null ? false : supported.indexOf(value) >= 0; 1625 } 1626 1627 private void setCameraParameters() { 1628 mParameters = mCameraDevice.getParameters(); 1629 1630 // Reset preview frame rate to the maximum because it may be lowered by 1631 // video camera application. 1632 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1633 if (frameRates != null) { 1634 Integer max = Collections.max(frameRates); 1635 mParameters.setPreviewFrameRate(max); 1636 } 1637 1638 // Set picture size. 1639 String pictureSize = mPreferences.getString( 1640 CameraSettings.KEY_PICTURE_SIZE, null); 1641 if (pictureSize == null) { 1642 CameraSettings.initialCameraPictureSize(this, mParameters); 1643 } else { 1644 List<Size> supported = mParameters.getSupportedPictureSizes(); 1645 CameraSettings.setCameraPictureSize( 1646 pictureSize, supported, mParameters); 1647 } 1648 1649 // Set the preview frame aspect ratio according to the picture size. 1650 Size size = mParameters.getPictureSize(); 1651 PreviewFrameLayout frameLayout = 1652 (PreviewFrameLayout) findViewById(R.id.frame_layout); 1653 frameLayout.setAspectRatio((double) size.width / size.height); 1654 1655 // Set a preview size that is closest to the viewfinder height and has 1656 // the right aspect ratio. 1657 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1658 Size optimalSize = getOptimalPreviewSize( 1659 sizes, (double) size.width / size.height); 1660 if (optimalSize != null) { 1661 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1662 } 1663 1664 // Set JPEG quality. 1665 String jpegQuality = mPreferences.getString( 1666 CameraSettings.KEY_JPEG_QUALITY, 1667 getString(R.string.pref_camera_jpegquality_default)); 1668 mParameters.setJpegQuality(Integer.parseInt(jpegQuality)); 1669 1670 // For the following settings, we need to check if the settings are 1671 // still supported by latest driver, if not, ignore the settings. 1672 1673 // Set flash mode. 1674 String flashMode = mPreferences.getString( 1675 CameraSettings.KEY_FLASH_MODE, 1676 getString(R.string.pref_camera_flashmode_default)); 1677 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1678 if (isSupported(flashMode, supportedFlash)) { 1679 mParameters.setFlashMode(flashMode); 1680 } else { 1681 // If the current flashMode is not support, show the 1682 // FLASH_MODE_OFF icon. 1683 flashMode = Parameters.FLASH_MODE_OFF; 1684 } 1685 1686 // We post the runner because this function can be called from 1687 // non-UI thread (i.e., startPreviewThread). 1688 final String finalFlashMode = flashMode; 1689 mHandler.post(new Runnable() { 1690 public void run() { 1691 mFlashIndicator.setMode(finalFlashMode); 1692 } 1693 }); 1694 1695 // Set white balance parameter. 1696 String whiteBalance = mPreferences.getString( 1697 CameraSettings.KEY_WHITE_BALANCE, 1698 getString(R.string.pref_camera_whitebalance_default)); 1699 if (isSupported(whiteBalance, mParameters.getSupportedWhiteBalance())) { 1700 mParameters.setWhiteBalance(whiteBalance); 1701 } 1702 1703 // Set color effect parameter. 1704 String colorEffect = mPreferences.getString( 1705 CameraSettings.KEY_COLOR_EFFECT, 1706 getString(R.string.pref_camera_coloreffect_default)); 1707 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 1708 mParameters.setColorEffect(colorEffect); 1709 } 1710 1711 // Set scene mode. 1712 String sceneMode = mPreferences.getString( 1713 CameraSettings.KEY_SCENE_MODE, 1714 getString(R.string.pref_camera_scenemode_default)); 1715 if (isSupported(sceneMode, mParameters.getSupportedSceneModes())) { 1716 mParameters.setSceneMode(sceneMode); 1717 } 1718 1719 // Set focus mode. 1720 mFocusMode = mPreferences.getString( 1721 CameraSettings.KEY_FOCUS_MODE, 1722 getString(R.string.pref_camera_focusmode_default)); 1723 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 1724 mParameters.setFocusMode(mFocusMode); 1725 } 1726 1727 mCameraDevice.setParameters(mParameters); 1728 } 1729 1730 private void gotoGallery() { 1731 MenuHelper.gotoCameraImageGallery(this); 1732 } 1733 1734 private void viewLastImage() { 1735 if (mThumbController.isUriValid()) { 1736 Uri targetUri = mThumbController.getUri(); 1737 targetUri = targetUri.buildUpon().appendQueryParameter( 1738 "bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); 1739 Intent intent = new Intent(this, ReviewImage.class); 1740 intent.setData(targetUri); 1741 intent.putExtra(MediaStore.EXTRA_FULL_SCREEN, true); 1742 intent.putExtra(MediaStore.EXTRA_SHOW_ACTION_ICONS, true); 1743 intent.putExtra("com.android.camera.ReviewMode", true); 1744 try { 1745 startActivity(intent); 1746 } catch (ActivityNotFoundException ex) { 1747 Log.e(TAG, "review image fail", ex); 1748 } 1749 } else { 1750 Log.e(TAG, "Can't view last image."); 1751 } 1752 } 1753 1754 private void startReceivingLocationUpdates() { 1755 if (mLocationManager != null) { 1756 try { 1757 mLocationManager.requestLocationUpdates( 1758 LocationManager.NETWORK_PROVIDER, 1759 1000, 1760 0F, 1761 mLocationListeners[1]); 1762 } catch (java.lang.SecurityException ex) { 1763 Log.i(TAG, "fail to request location update, ignore", ex); 1764 } catch (IllegalArgumentException ex) { 1765 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1766 } 1767 try { 1768 mLocationManager.requestLocationUpdates( 1769 LocationManager.GPS_PROVIDER, 1770 1000, 1771 0F, 1772 mLocationListeners[0]); 1773 } catch (java.lang.SecurityException ex) { 1774 Log.i(TAG, "fail to request location update, ignore", ex); 1775 } catch (IllegalArgumentException ex) { 1776 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1777 } 1778 } 1779 } 1780 1781 private void stopReceivingLocationUpdates() { 1782 if (mLocationManager != null) { 1783 for (int i = 0; i < mLocationListeners.length; i++) { 1784 try { 1785 mLocationManager.removeUpdates(mLocationListeners[i]); 1786 } catch (Exception ex) { 1787 Log.i(TAG, "fail to remove location listners, ignore", ex); 1788 } 1789 } 1790 } 1791 } 1792 1793 private Location getCurrentLocation() { 1794 // go in best to worst order 1795 for (int i = 0; i < mLocationListeners.length; i++) { 1796 Location l = mLocationListeners[i].current(); 1797 if (l != null) return l; 1798 } 1799 return null; 1800 } 1801 1802 private boolean isCameraIdle() { 1803 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1804 } 1805 1806 private boolean isImageCaptureIntent() { 1807 String action = getIntent().getAction(); 1808 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1809 } 1810 1811 private void setupCaptureParams() { 1812 Bundle myExtras = getIntent().getExtras(); 1813 if (myExtras != null) { 1814 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1815 mCropValue = myExtras.getString("crop"); 1816 } 1817 } 1818 1819 private void showPostCaptureAlert() { 1820 if (mIsImageCaptureIntent) { 1821 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1822 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1823 for (int id : pickIds) { 1824 View button = findViewById(id); 1825 ((View) button.getParent()).setVisibility(View.VISIBLE); 1826 } 1827 } 1828 } 1829 1830 private void hidePostCaptureAlert() { 1831 if (mIsImageCaptureIntent) { 1832 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1833 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1834 for (int id : pickIds) { 1835 View button = findViewById(id); 1836 ((View) button.getParent()).setVisibility(View.GONE); 1837 } 1838 } 1839 } 1840 1841 private int calculatePicturesRemaining() { 1842 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1843 return mPicturesRemaining; 1844 } 1845 1846 @Override 1847 public boolean onPrepareOptionsMenu(Menu menu) { 1848 super.onPrepareOptionsMenu(menu); 1849 // Only show the menu when camera is idle. 1850 for (int i = 0; i < menu.size(); i++) { 1851 menu.getItem(i).setVisible(isCameraIdle()); 1852 } 1853 1854 return true; 1855 } 1856 1857 @Override 1858 public boolean onCreateOptionsMenu(Menu menu) { 1859 super.onCreateOptionsMenu(menu); 1860 1861 if (mIsImageCaptureIntent) { 1862 // No options menu for attach mode. 1863 return false; 1864 } else { 1865 addBaseMenuItems(menu); 1866 } 1867 return true; 1868 } 1869 1870 private void addBaseMenuItems(Menu menu) { 1871 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 1872 MenuHelper.POSITION_GOTO_GALLERY, 1873 R.string.camera_gallery_photos_text) 1874 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1875 public boolean onMenuItemClick(MenuItem item) { 1876 gotoGallery(); 1877 return true; 1878 } 1879 }); 1880 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1881 mGalleryItems.add(gallery); 1882 1883 MenuItem item = menu.add(Menu.NONE, Menu.NONE, 1884 MenuHelper.POSITION_CAMERA_SETTING, R.string.settings) 1885 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1886 public boolean onMenuItemClick(MenuItem item) { 1887 showOnScreenSettings(); 1888 return true; 1889 } 1890 }); 1891 item.setIcon(android.R.drawable.ic_menu_preferences); 1892 } 1893 1894 public boolean onSwitchChanged(Switcher source, boolean onOff) { 1895 if (onOff == SWITCH_VIDEO) { 1896 if (!isCameraIdle()) return false; 1897 MenuHelper.gotoVideoMode(this); 1898 finish(); 1899 } 1900 return true; 1901 } 1902 1903 public void onSharedPreferenceChanged( 1904 SharedPreferences preferences, String key) { 1905 // ignore the events after "onPause()" 1906 if (mPausing) return; 1907 1908 if (CameraSettings.KEY_RECORD_LOCATION.equals(key)) { 1909 mRecordLocation = preferences.getBoolean(key, false); 1910 if (mRecordLocation) { 1911 startReceivingLocationUpdates(); 1912 } else { 1913 stopReceivingLocationUpdates(); 1914 } 1915 } else { 1916 // All preferences except RECORD_LOCATION are camera parameters. 1917 // Call setCameraParameters to take effect now. 1918 setCameraParameters(); 1919 } 1920 } 1921 1922 @Override 1923 public void onUserInteraction() { 1924 super.onUserInteraction(); 1925 keepScreenOnAwhile(); 1926 } 1927 1928 private void resetScreenOn() { 1929 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1930 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1931 } 1932 1933 private void keepScreenOnAwhile() { 1934 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1935 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1936 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1937 } 1938} 1939 1940class FocusRectangle extends View { 1941 1942 @SuppressWarnings("unused") 1943 private static final String TAG = "FocusRectangle"; 1944 1945 public FocusRectangle(Context context, AttributeSet attrs) { 1946 super(context, attrs); 1947 } 1948 1949 private void setDrawable(int resid) { 1950 setBackgroundDrawable(getResources().getDrawable(resid)); 1951 } 1952 1953 public void showStart() { 1954 setDrawable(R.drawable.focus_focusing); 1955 } 1956 1957 public void showSuccess() { 1958 setDrawable(R.drawable.focus_focused); 1959 } 1960 1961 public void showFail() { 1962 setDrawable(R.drawable.focus_focus_failed); 1963 } 1964 1965 public void clear() { 1966 setBackgroundDrawable(null); 1967 } 1968} 1969