Camera.java revision b02ebbea2d3d98a3ab2c15cb152387b9d201dd18
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.View; 61import android.view.ViewGroup; 62import android.view.Window; 63import android.view.WindowManager; 64import android.view.MenuItem.OnMenuItemClickListener; 65import android.widget.ImageView; 66 67import com.android.camera.gallery.IImage; 68import com.android.camera.gallery.IImageList; 69 70import java.io.File; 71import java.io.FileNotFoundException; 72import java.io.FileOutputStream; 73import java.io.IOException; 74import java.io.OutputStream; 75import java.util.ArrayList; 76import java.util.Collections; 77import java.util.List; 78 79/** 80 * Activity of the Camera which used to see preview and take pictures. 81 */ 82public class Camera extends Activity implements View.OnClickListener, 83 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 84 Switcher.OnSwitchListener, OnScreenSettings.OnVisibilityChangedListener, 85 OnSharedPreferenceChangeListener { 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 String GPS_MODE_ON = "on"; 95 private static final String GPS_MODE_OFF = "off"; 96 97 private static final int SCREEN_DELAY = 2 * 60 * 1000; 98 private static final int FOCUS_BEEP_VOLUME = 100; 99 100 private Parameters mParameters; 101 102 private OrientationEventListener mOrientationListener; 103 private int mLastOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 104 private SharedPreferences mPreferences; 105 106 private static final int IDLE = 1; 107 private static final int SNAPSHOT_IN_PROGRESS = 2; 108 109 private static final boolean SWITCH_CAMERA = true; 110 private static final boolean SWITCH_VIDEO = false; 111 112 private int mStatus = IDLE; 113 private static final String sTempCropFilename = "crop-temp"; 114 115 private android.hardware.Camera mCameraDevice; 116 private VideoPreview mSurfaceView; 117 private SurfaceHolder mSurfaceHolder = null; 118 private ShutterButton mShutterButton; 119 private FocusRectangle mFocusRectangle; 120 private IconIndicator mGpsIndicator; 121 private IconIndicator mFlashIndicator; 122 private ToneGenerator mFocusToneGenerator; 123 private GestureDetector mGestureDetector; 124 private Switcher mSwitcher; 125 private boolean mStartPreviewFail = false; 126 127 // mPostCaptureAlert, mLastPictureButton, mThumbController 128 // are non-null only if isImageCaptureIntent() is true. 129 private ImageView mLastPictureButton; 130 private ThumbnailController mThumbController; 131 132 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 133 private String mCropValue; 134 private Uri mSaveUri; 135 136 private int mViewFinderHeight; 137 138 private ImageCapture mImageCapture = null; 139 140 private boolean mPreviewing; 141 private boolean mPausing; 142 private boolean mFirstTimeInitialized; 143 private boolean mIsImageCaptureIntent; 144 private boolean mRecordLocation; 145 146 private static final int FOCUS_NOT_STARTED = 0; 147 private static final int FOCUSING = 1; 148 private static final int FOCUSING_SNAP_ON_FINISH = 2; 149 private static final int FOCUS_SUCCESS = 3; 150 private static final int FOCUS_FAIL = 4; 151 private int mFocusState = FOCUS_NOT_STARTED; 152 153 private ContentResolver mContentResolver; 154 private boolean mDidRegister = false; 155 156 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 157 158 private LocationManager mLocationManager = null; 159 160 // Use OneShotPreviewCallback to measure the time between 161 // JpegPictureCallback and preview. 162 private final OneShotPreviewCallback mOneShotPreviewCallback = 163 new OneShotPreviewCallback(); 164 private final ShutterCallback mShutterCallback = new ShutterCallback(); 165 private final RawPictureCallback mRawPictureCallback = 166 new RawPictureCallback(); 167 private final AutoFocusCallback mAutoFocusCallback = 168 new AutoFocusCallback(); 169 // Use the ErrorCallback to capture the crash count 170 // on the mediaserver 171 private final ErrorCallback mErrorCallback = new ErrorCallback(); 172 173 private long mFocusStartTime; 174 private long mFocusCallbackTime; 175 private long mCaptureStartTime; 176 private long mShutterCallbackTime; 177 private long mRawPictureCallbackTime; 178 private long mJpegPictureCallbackTime; 179 private int mPicturesRemaining; 180 181 // These latency time are for the CameraLatency test. 182 public long mAutoFocusTime; 183 public long mShutterLag; 184 public long mShutterAndRawPictureCallbackTime; 185 public long mJpegPictureCallbackTimeLag; 186 public long mRawPictureAndJpegPictureCallbackTime; 187 188 // Add the media server tag 189 public static boolean mMediaServerDied = false; 190 // Focus mode. Options are pref_camera_focusmode_entryvalues. 191 private String mFocusMode; 192 193 private final Handler mHandler = new MainHandler(); 194 private OnScreenSettings mSettings; 195 196 /** 197 * This Handler is used to post message back onto the main thread of the 198 * application 199 */ 200 private class MainHandler extends Handler { 201 @Override 202 public void handleMessage(Message msg) { 203 switch (msg.what) { 204 case RESTART_PREVIEW: { 205 restartPreview(); 206 break; 207 } 208 209 case CLEAR_SCREEN_DELAY: { 210 getWindow().clearFlags( 211 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 212 break; 213 } 214 215 case FIRST_TIME_INIT: { 216 initializeFirstTime(); 217 break; 218 } 219 } 220 } 221 } 222 223 // Snapshots can only be taken after this is called. It should be called 224 // once only. We could have done these things in onCreate() but we want to 225 // make preview screen appear as soon as possible. 226 private void initializeFirstTime() { 227 if (mFirstTimeInitialized) return; 228 229 // Create orientation listenter. This should be done first because it 230 // takes some time to get first orientation. 231 mOrientationListener = 232 new OrientationEventListener(Camera.this) { 233 @Override 234 public void onOrientationChanged(int orientation) { 235 // We keep the last known orientation. So if the user 236 // first orient the camera then point the camera to 237 // floor/sky, we still have the correct orientation. 238 if (orientation != ORIENTATION_UNKNOWN) { 239 mLastOrientation = orientation; 240 } 241 } 242 }; 243 mOrientationListener.enable(); 244 245 // Initialize location sevice. 246 mLocationManager = (LocationManager) 247 getSystemService(Context.LOCATION_SERVICE); 248 readPreference(); 249 if (mRecordLocation) startReceivingLocationUpdates(); 250 251 checkStorage(); 252 253 // Initialize last picture button. 254 mContentResolver = getContentResolver(); 255 if (!mIsImageCaptureIntent) { 256 findViewById(R.id.camera_switch).setOnClickListener(this); 257 mLastPictureButton = 258 (ImageView) findViewById(R.id.review_thumbnail); 259 mLastPictureButton.setOnClickListener(this); 260 mThumbController = new ThumbnailController( 261 getResources(), mLastPictureButton, mContentResolver); 262 mThumbController.loadData(ImageManager.getLastImageThumbPath()); 263 // Update last image thumbnail. 264 updateThumbnailButton(); 265 } 266 267 // Initialize shutter button. 268 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 269 mShutterButton.setOnShutterButtonListener(this); 270 mShutterButton.setVisibility(View.VISIBLE); 271 272 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 273 updateFocusIndicator(); 274 275 // Initialize GPS indicator. 276 mGpsIndicator = (IconIndicator) findViewById(R.id.gps_icon); 277 278 ImageManager.ensureOSXCompatibleFolder(); 279 280 installIntentFilter(); 281 282 initializeFocusTone(); 283 284 mFirstTimeInitialized = true; 285 } 286 287 private void updateThumbnailButton() { 288 // Update last image if URI is invalid and the storage is ready. 289 if (!mThumbController.isUriValid() && mPicturesRemaining >= 0) { 290 updateLastImage(); 291 } 292 mThumbController.updateDisplayIfNeeded(); 293 } 294 295 // If the activity is paused and resumed, this method will be called in 296 // onResume. 297 private void initializeSecondTime() { 298 // Start orientation listener as soon as possible because it takes 299 // some time to get first orientation. 300 mOrientationListener.enable(); 301 302 // Start location update if needed. 303 readPreference(); 304 if (mRecordLocation) startReceivingLocationUpdates(); 305 306 installIntentFilter(); 307 308 initializeFocusTone(); 309 310 checkStorage(); 311 312 if (!mIsImageCaptureIntent) { 313 updateThumbnailButton(); 314 } 315 } 316 317 public void onVisibilityChanged(boolean visible) { 318 // When the on-screen setting is not displayed, we show the gripper. 319 // When the on-screen setting is displayed, we hide the gripper. 320 findViewById(R.id.btn_gripper).setVisibility( 321 visible ? View.INVISIBLE : View.VISIBLE); 322 if (visible) { 323 mPreferences.registerOnSharedPreferenceChangeListener(this); 324 } else { 325 mPreferences.unregisterOnSharedPreferenceChangeListener(this); 326 } 327 } 328 329 @Override 330 public boolean dispatchTouchEvent(MotionEvent m) { 331 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 332 return mGestureDetector.onTouchEvent(m); 333 } 334 return true; 335 } 336 337 LocationListener [] mLocationListeners = new LocationListener[] { 338 new LocationListener(LocationManager.GPS_PROVIDER), 339 new LocationListener(LocationManager.NETWORK_PROVIDER) 340 }; 341 342 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 343 @Override 344 public void onReceive(Context context, Intent intent) { 345 String action = intent.getAction(); 346 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 347 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 348 || action.equals(Intent.ACTION_MEDIA_CHECKING) 349 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 350 checkStorage(); 351 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 352 checkStorage(); 353 if (!mIsImageCaptureIntent) { 354 updateThumbnailButton(); 355 } 356 } 357 } 358 }; 359 360 private class LocationListener 361 implements android.location.LocationListener { 362 Location mLastLocation; 363 boolean mValid = false; 364 String mProvider; 365 366 public LocationListener(String provider) { 367 mProvider = provider; 368 mLastLocation = new Location(mProvider); 369 } 370 371 public void onLocationChanged(Location newLocation) { 372 if (newLocation.getLatitude() == 0.0 373 && newLocation.getLongitude() == 0.0) { 374 // Hack to filter out 0.0,0.0 locations 375 return; 376 } 377 // If GPS is available before start camera, we won't get status 378 // update so update GPS indicator when we receive data. 379 if (mRecordLocation 380 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 381 mGpsIndicator.setMode(GPS_MODE_ON); 382 } 383 mLastLocation.set(newLocation); 384 mValid = true; 385 } 386 387 public void onProviderEnabled(String provider) { 388 } 389 390 public void onProviderDisabled(String provider) { 391 mValid = false; 392 } 393 394 public void onStatusChanged( 395 String provider, int status, Bundle extras) { 396 switch(status) { 397 case LocationProvider.OUT_OF_SERVICE: 398 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 399 mValid = false; 400 if (mRecordLocation && 401 LocationManager.GPS_PROVIDER.equals(provider)) { 402 mGpsIndicator.setMode(GPS_MODE_OFF); 403 } 404 break; 405 } 406 } 407 } 408 409 public Location current() { 410 return mValid ? mLastLocation : null; 411 } 412 } 413 414 private final class OneShotPreviewCallback 415 implements android.hardware.Camera.PreviewCallback { 416 public void onPreviewFrame(byte[] data, 417 android.hardware.Camera camera) { 418 long now = System.currentTimeMillis(); 419 if (mJpegPictureCallbackTime != 0) { 420 mJpegPictureCallbackTimeLag = now - mJpegPictureCallbackTime; 421 Log.v(TAG, "mJpegPictureCallbackTimeLag = " 422 + mJpegPictureCallbackTimeLag + "ms"); 423 mJpegPictureCallbackTime = 0; 424 } else { 425 Log.v(TAG, "Got first frame"); 426 } 427 } 428 } 429 430 private final class ShutterCallback 431 implements android.hardware.Camera.ShutterCallback { 432 public void onShutter() { 433 mShutterCallbackTime = System.currentTimeMillis(); 434 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 435 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 436 clearFocusState(); 437 } 438 } 439 440 private final class RawPictureCallback implements PictureCallback { 441 public void onPictureTaken( 442 byte [] rawData, android.hardware.Camera camera) { 443 mRawPictureCallbackTime = System.currentTimeMillis(); 444 mShutterAndRawPictureCallbackTime = 445 mRawPictureCallbackTime - mShutterCallbackTime; 446 Log.v(TAG, "mShutterAndRawPictureCallbackTime = " 447 + mShutterAndRawPictureCallbackTime + "ms"); 448 } 449 } 450 451 private final class JpegPictureCallback implements PictureCallback { 452 Location mLocation; 453 454 public JpegPictureCallback(Location loc) { 455 mLocation = loc; 456 } 457 458 public void onPictureTaken( 459 final byte [] jpegData, final android.hardware.Camera camera) { 460 if (mPausing) { 461 return; 462 } 463 464 mJpegPictureCallbackTime = System.currentTimeMillis(); 465 mRawPictureAndJpegPictureCallbackTime = 466 mJpegPictureCallbackTime - mRawPictureCallbackTime; 467 Log.v(TAG, "mRawPictureAndJpegPictureCallbackTime = " 468 + mRawPictureAndJpegPictureCallbackTime + "ms"); 469 mImageCapture.storeImage(jpegData, camera, mLocation); 470 471 if (!mIsImageCaptureIntent) { 472 long delay = 1200 - ( 473 System.currentTimeMillis() - mRawPictureCallbackTime); 474 mHandler.sendEmptyMessageDelayed( 475 RESTART_PREVIEW, Math.max(delay, 0)); 476 } 477 } 478 } 479 480 private final class AutoFocusCallback 481 implements android.hardware.Camera.AutoFocusCallback { 482 public void onAutoFocus( 483 boolean focused, android.hardware.Camera camera) { 484 mFocusCallbackTime = System.currentTimeMillis(); 485 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 486 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 487 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 488 // Take the picture no matter focus succeeds or fails. No need 489 // to play the AF sound if we're about to play the shutter 490 // sound. 491 if (focused) { 492 mFocusState = FOCUS_SUCCESS; 493 } else { 494 mFocusState = FOCUS_FAIL; 495 } 496 mImageCapture.onSnap(); 497 } else if (mFocusState == FOCUSING) { 498 // User is half-pressing the focus key. Play the focus tone. 499 // Do not take the picture now. 500 ToneGenerator tg = mFocusToneGenerator; 501 if (tg != null) { 502 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 503 } 504 if (focused) { 505 mFocusState = FOCUS_SUCCESS; 506 } else { 507 mFocusState = FOCUS_FAIL; 508 } 509 } else if (mFocusState == FOCUS_NOT_STARTED) { 510 // User has released the focus key before focus completes. 511 // Do nothing. 512 } 513 updateFocusIndicator(); 514 } 515 } 516 517 private final class ErrorCallback 518 implements android.hardware.Camera.ErrorCallback { 519 public void onError(int error, android.hardware.Camera camera) { 520 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 521 mMediaServerDied = true; 522 Log.v(TAG, "media server died"); 523 } 524 } 525 } 526 527 private class ImageCapture { 528 529 private boolean mCancel = false; 530 531 private Uri mLastContentUri; 532 533 byte[] mCaptureOnlyData; 534 535 // Returns the rotation degree in the jpeg header. 536 private int storeImage(byte[] data, Location loc) { 537 try { 538 long dateTaken = System.currentTimeMillis(); 539 String name = createName(dateTaken) + ".jpg"; 540 mLastContentUri = ImageManager.addImage( 541 mContentResolver, 542 name, 543 dateTaken, 544 loc, // location for the database goes here 545 0, // the dsp will use the right orientation so 546 // don't "double set it" 547 ImageManager.CAMERA_IMAGE_BUCKET_NAME, name, null, data); 548 if (mLastContentUri == null) { 549 // this means we got an error 550 mCancel = true; 551 } 552 int degree = 0; 553 if (!mCancel) { 554 degree = ImageManager.getExifOrientation( 555 ImageManager.CAMERA_IMAGE_BUCKET_NAME + "/" + name); 556 ImageManager.setImageSize(mContentResolver, mLastContentUri, 557 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 558 name).length()); 559 } 560 return degree; 561 } catch (Exception ex) { 562 Log.e(TAG, "Exception while compressing image.", ex); 563 return 0; 564 } 565 } 566 567 public void storeImage(final byte[] data, 568 android.hardware.Camera camera, Location loc) { 569 if (!mIsImageCaptureIntent) { 570 int degree = storeImage(data, loc); 571 sendBroadcast(new Intent( 572 "com.android.camera.NEW_PICTURE", mLastContentUri)); 573 setLastPictureThumb(data, degree, 574 mImageCapture.getLastCaptureUri()); 575 mThumbController.updateDisplayIfNeeded(); 576 } else { 577 mCaptureOnlyData = data; 578 showPostCaptureAlert(); 579 } 580 } 581 582 /** 583 * Initiate the capture of an image. 584 */ 585 public void initiate() { 586 if (mCameraDevice == null) { 587 return; 588 } 589 590 mCancel = false; 591 592 capture(); 593 } 594 595 public Uri getLastCaptureUri() { 596 return mLastContentUri; 597 } 598 599 public byte[] getLastCaptureData() { 600 return mCaptureOnlyData; 601 } 602 603 private void capture() { 604 mCaptureOnlyData = null; 605 606 // Set rotation. 607 int orientation = mLastOrientation; 608 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 609 orientation += 90; 610 } 611 orientation = ImageManager.roundOrientation(orientation); 612 Log.v(TAG, "mLastOrientation = " + mLastOrientation 613 + ", orientation = " + orientation); 614 mParameters.setRotation(orientation); 615 616 // Clear previous GPS location from the parameters. 617 mParameters.removeGpsData(); 618 619 // Set GPS location. 620 Location loc = mRecordLocation ? getCurrentLocation() : null; 621 if (loc != null) { 622 double lat = loc.getLatitude(); 623 double lon = loc.getLongitude(); 624 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 625 626 if (hasLatLon) { 627 mParameters.setGpsLatitude(lat); 628 mParameters.setGpsLongitude(lon); 629 if (loc.hasAltitude()) { 630 mParameters.setGpsAltitude(loc.getAltitude()); 631 } else { 632 // for NETWORK_PROVIDER location provider, we may have 633 // no altitude information, but the driver needs it, so 634 // we fake one. 635 mParameters.setGpsAltitude(0); 636 } 637 if (loc.getTime() != 0) { 638 // Location.getTime() is UTC in milliseconds. 639 // gps-timestamp is UTC in seconds. 640 long utcTimeSeconds = loc.getTime() / 1000; 641 mParameters.setGpsTimestamp(utcTimeSeconds); 642 } 643 } else { 644 loc = null; 645 } 646 } 647 648 mCameraDevice.setParameters(mParameters); 649 650 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 651 new JpegPictureCallback(loc)); 652 mPreviewing = false; 653 } 654 655 public void onSnap() { 656 // If we are already in the middle of taking a snapshot then ignore. 657 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 658 return; 659 } 660 mCaptureStartTime = System.currentTimeMillis(); 661 662 // Don't check the filesystem here, we can't afford the latency. 663 // Instead, check the cached value which was calculated when the 664 // preview was restarted. 665 if (mPicturesRemaining < 1) { 666 updateStorageHint(mPicturesRemaining); 667 return; 668 } 669 670 mStatus = SNAPSHOT_IN_PROGRESS; 671 672 mImageCapture.initiate(); 673 } 674 675 private void clearLastData() { 676 mCaptureOnlyData = null; 677 } 678 } 679 680 public boolean saveDataToFile(String filePath, byte[] data) { 681 FileOutputStream f = null; 682 try { 683 f = new FileOutputStream(filePath); 684 f.write(data); 685 } catch (IOException e) { 686 return false; 687 } finally { 688 MenuHelper.closeSilently(f); 689 } 690 return true; 691 } 692 693 private void setLastPictureThumb(byte[] data, int degree, Uri uri) { 694 BitmapFactory.Options options = new BitmapFactory.Options(); 695 options.inSampleSize = 16; 696 Bitmap lastPictureThumb = 697 BitmapFactory.decodeByteArray(data, 0, data.length, options); 698 lastPictureThumb = Util.rotate(lastPictureThumb, degree); 699 mThumbController.setData(uri, lastPictureThumb); 700 } 701 702 private static String createName(long dateTaken) { 703 return DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString(); 704 } 705 706 @Override 707 public void onCreate(Bundle icicle) { 708 super.onCreate(icicle); 709 710 Window win = getWindow(); 711 win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 712 setContentView(R.layout.camera); 713 mSurfaceView = (VideoPreview) findViewById(R.id.camera_preview); 714 mViewFinderHeight = mSurfaceView.getLayoutParams().height; 715 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 716 717 /* 718 * To reduce startup time, we start the preview in another thread. 719 * We make sure the preview is started at the end of onCreate. 720 */ 721 Thread startPreviewThread = new Thread(new Runnable() { 722 public void run() { 723 try { 724 mStartPreviewFail = false; 725 startPreview(); 726 } catch (CameraHardwareException e) { 727 // In eng build, we throw the exception so that test tool 728 // can detect it and report it 729 if ("eng".equals(Build.TYPE)) { 730 throw new RuntimeException(e); 731 } 732 mStartPreviewFail = true; 733 } 734 } 735 }); 736 startPreviewThread.start(); 737 738 // don't set mSurfaceHolder here. We have it set ONLY within 739 // surfaceChanged / surfaceDestroyed, other parts of the code 740 // assume that when it is set, the surface is also set. 741 SurfaceHolder holder = mSurfaceView.getHolder(); 742 holder.addCallback(this); 743 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 744 745 mIsImageCaptureIntent = isImageCaptureIntent(); 746 if (mIsImageCaptureIntent) { 747 setupCaptureParams(); 748 } 749 750 LayoutInflater inflater = getLayoutInflater(); 751 752 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 753 if (mIsImageCaptureIntent) { 754 View controlBar = inflater.inflate( 755 R.layout.attach_camera_control, rootView); 756 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 757 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 758 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 759 } else { 760 inflater.inflate(R.layout.camera_control, rootView); 761 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 762 mSwitcher.setOnSwitchListener(this); 763 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 764 } 765 findViewById(R.id.btn_gripper) 766 .setOnTouchListener(new GripperTouchListener()); 767 768 mFlashIndicator = (IconIndicator) findViewById(R.id.flash_icon); 769 770 // Make sure preview is started. 771 try { 772 startPreviewThread.join(); 773 if (mStartPreviewFail) { 774 showCameraErrorAndFinish(); 775 return; 776 } 777 } catch (InterruptedException ex) { 778 // ignore 779 } 780 781 // Resize mVideoPreview to the right aspect ratio. 782 resizeForPreviewAspectRatio(mSurfaceView); 783 } 784 785 private class GripperTouchListener implements View.OnTouchListener { 786 public boolean onTouch(View view, MotionEvent event) { 787 switch (event.getAction()) { 788 case MotionEvent.ACTION_DOWN: 789 return true; 790 case MotionEvent.ACTION_UP: 791 showOnScreenSettings(); 792 return true; 793 } 794 return false; 795 } 796 } 797 798 @Override 799 public void onStart() { 800 super.onStart(); 801 if (!mIsImageCaptureIntent) { 802 mSwitcher.setSwitch(SWITCH_CAMERA); 803 } 804 } 805 806 private void checkStorage() { 807 if (ImageManager.isMediaScannerScanning(getContentResolver())) { 808 mPicturesRemaining = MenuHelper.NO_STORAGE_ERROR; 809 } else { 810 calculatePicturesRemaining(); 811 } 812 updateStorageHint(mPicturesRemaining); 813 } 814 815 private void showOnScreenSettings() { 816 if (mSettings == null) { 817 mSettings = new OnScreenSettings( 818 findViewById(R.id.camera_preview)); 819 CameraSettings helper = new CameraSettings(this, mParameters); 820 mSettings.setPreferenceScreen(helper 821 .getPreferenceScreen(R.xml.camera_preferences)); 822 mSettings.setOnVisibilityChangedListener(this); 823 } 824 mSettings.expandPanel(); 825 } 826 827 public void onClick(View v) { 828 switch (v.getId()) { 829 case R.id.btn_retake: 830 hidePostCaptureAlert(); 831 restartPreview(); 832 break; 833 case R.id.review_thumbnail: 834 if (isCameraIdle()) { 835 viewLastImage(); 836 } 837 break; 838 case R.id.btn_done: 839 doAttach(); 840 break; 841 case R.id.btn_cancel: 842 doCancel(); 843 } 844 } 845 846 private Bitmap createCaptureBitmap(byte[] data) { 847 // This is really stupid...we just want to read the orientation in 848 // the jpeg header. 849 String filepath = ImageManager.getTempJpegPath(); 850 int degree = 0; 851 if (saveDataToFile(filepath, data)) { 852 degree = ImageManager.getExifOrientation(filepath); 853 new File(filepath).delete(); 854 } 855 856 // Limit to 50k pixels so we can return it in the intent. 857 Bitmap bitmap = Util.makeBitmap(data, 50*1024); 858 bitmap = Util.rotate(bitmap, degree); 859 return bitmap; 860 } 861 862 private void doAttach() { 863 if (mPausing) { 864 return; 865 } 866 867 byte[] data = mImageCapture.getLastCaptureData(); 868 869 if (mCropValue == null) { 870 // First handle the no crop case -- just return the value. If the 871 // caller specifies a "save uri" then write the data to it's 872 // stream. Otherwise, pass back a scaled down version of the bitmap 873 // directly in the extras. 874 if (mSaveUri != null) { 875 OutputStream outputStream = null; 876 try { 877 outputStream = mContentResolver.openOutputStream(mSaveUri); 878 outputStream.write(data); 879 outputStream.close(); 880 881 setResult(RESULT_OK); 882 finish(); 883 } catch (IOException ex) { 884 // ignore exception 885 } finally { 886 Util.closeSilently(outputStream); 887 } 888 } else { 889 Bitmap bitmap = createCaptureBitmap(data); 890 setResult(RESULT_OK, 891 new Intent("inline-data").putExtra("data", bitmap)); 892 finish(); 893 } 894 } else { 895 // Save the image to a temp file and invoke the cropper 896 Uri tempUri = null; 897 FileOutputStream tempStream = null; 898 try { 899 File path = getFileStreamPath(sTempCropFilename); 900 path.delete(); 901 tempStream = openFileOutput(sTempCropFilename, 0); 902 tempStream.write(data); 903 tempStream.close(); 904 tempUri = Uri.fromFile(path); 905 } catch (FileNotFoundException ex) { 906 setResult(Activity.RESULT_CANCELED); 907 finish(); 908 return; 909 } catch (IOException ex) { 910 setResult(Activity.RESULT_CANCELED); 911 finish(); 912 return; 913 } finally { 914 Util.closeSilently(tempStream); 915 } 916 917 Bundle newExtras = new Bundle(); 918 if (mCropValue.equals("circle")) { 919 newExtras.putString("circleCrop", "true"); 920 } 921 if (mSaveUri != null) { 922 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 923 } else { 924 newExtras.putBoolean("return-data", true); 925 } 926 927 Intent cropIntent = new Intent(); 928 cropIntent.setClass(this, CropImage.class); 929 cropIntent.setData(tempUri); 930 cropIntent.putExtras(newExtras); 931 932 startActivityForResult(cropIntent, CROP_MSG); 933 } 934 } 935 936 private void doCancel() { 937 setResult(RESULT_CANCELED, new Intent()); 938 finish(); 939 } 940 941 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 942 if (mPausing) { 943 return; 944 } 945 switch (button.getId()) { 946 case R.id.shutter_button: 947 doFocus(pressed); 948 break; 949 } 950 } 951 952 public void onShutterButtonClick(ShutterButton button) { 953 if (mPausing) { 954 return; 955 } 956 switch (button.getId()) { 957 case R.id.shutter_button: 958 doSnap(); 959 break; 960 } 961 } 962 963 private OnScreenHint mStorageHint; 964 965 private void updateStorageHint(int remaining) { 966 String noStorageText = null; 967 968 if (remaining == MenuHelper.NO_STORAGE_ERROR) { 969 String state = Environment.getExternalStorageState(); 970 if (state == Environment.MEDIA_CHECKING || 971 ImageManager.isMediaScannerScanning(getContentResolver())) { 972 noStorageText = getString(R.string.preparing_sd); 973 } else { 974 noStorageText = getString(R.string.no_storage); 975 } 976 } else if (remaining < 1) { 977 noStorageText = getString(R.string.not_enough_space); 978 } 979 980 if (noStorageText != null) { 981 if (mStorageHint == null) { 982 mStorageHint = OnScreenHint.makeText(this, noStorageText); 983 } else { 984 mStorageHint.setText(noStorageText); 985 } 986 mStorageHint.show(); 987 } else if (mStorageHint != null) { 988 mStorageHint.cancel(); 989 mStorageHint = null; 990 } 991 } 992 993 private void installIntentFilter() { 994 // install an intent filter to receive SD card related events. 995 IntentFilter intentFilter = 996 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 997 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 998 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED); 999 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1000 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1001 intentFilter.addDataScheme("file"); 1002 registerReceiver(mReceiver, intentFilter); 1003 mDidRegister = true; 1004 } 1005 1006 private void initializeFocusTone() { 1007 // Initialize focus tone generator. 1008 try { 1009 mFocusToneGenerator = new ToneGenerator( 1010 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1011 } catch (Throwable ex) { 1012 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1013 mFocusToneGenerator = null; 1014 } 1015 } 1016 1017 private void readPreference() { 1018 mRecordLocation = mPreferences.getBoolean( 1019 "pref_camera_recordlocation_key", false); 1020 mFocusMode = mPreferences.getString( 1021 CameraSettings.KEY_FOCUS_MODE, 1022 getString(R.string.pref_camera_focusmode_default)); 1023 } 1024 1025 @Override 1026 public void onResume() { 1027 super.onResume(); 1028 1029 mPausing = false; 1030 mJpegPictureCallbackTime = 0; 1031 mImageCapture = new ImageCapture(); 1032 1033 // Start the preview if it is not started. 1034 if (!mPreviewing && !mStartPreviewFail) { 1035 try { 1036 startPreview(); 1037 } catch (CameraHardwareException e) { 1038 showCameraErrorAndFinish(); 1039 return; 1040 } 1041 } 1042 1043 if (mSurfaceHolder != null) { 1044 // If first time initialization is not finished, put it in the 1045 // message queue. 1046 if (!mFirstTimeInitialized) { 1047 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1048 } else { 1049 initializeSecondTime(); 1050 } 1051 } 1052 keepScreenOnAwhile(); 1053 } 1054 1055 private static ImageManager.DataLocation dataLocation() { 1056 return ImageManager.DataLocation.EXTERNAL; 1057 } 1058 1059 @Override 1060 protected void onPause() { 1061 mPausing = true; 1062 stopPreview(); 1063 // Close the camera now because other activities may need to use it. 1064 closeCamera(); 1065 resetScreenOn(); 1066 1067 if (mSettings != null && mSettings.isVisible()) { 1068 mSettings.setVisible(false); 1069 } 1070 1071 if (mFirstTimeInitialized) { 1072 mOrientationListener.disable(); 1073 mGpsIndicator.setMode(GPS_MODE_OFF); 1074 if (!mIsImageCaptureIntent) { 1075 mThumbController.storeData( 1076 ImageManager.getLastImageThumbPath()); 1077 } 1078 hidePostCaptureAlert(); 1079 } 1080 1081 if (mDidRegister) { 1082 unregisterReceiver(mReceiver); 1083 mDidRegister = false; 1084 } 1085 stopReceivingLocationUpdates(); 1086 1087 if (mFocusToneGenerator != null) { 1088 mFocusToneGenerator.release(); 1089 mFocusToneGenerator = null; 1090 } 1091 1092 if (mStorageHint != null) { 1093 mStorageHint.cancel(); 1094 mStorageHint = null; 1095 } 1096 1097 // If we are in an image capture intent and has taken 1098 // a picture, we just clear it in onPause. 1099 mImageCapture.clearLastData(); 1100 mImageCapture = null; 1101 1102 // Remove the messages in the event queue. 1103 mHandler.removeMessages(RESTART_PREVIEW); 1104 mHandler.removeMessages(FIRST_TIME_INIT); 1105 1106 super.onPause(); 1107 } 1108 1109 @Override 1110 protected void onActivityResult( 1111 int requestCode, int resultCode, Intent data) { 1112 switch (requestCode) { 1113 case CROP_MSG: { 1114 Intent intent = new Intent(); 1115 if (data != null) { 1116 Bundle extras = data.getExtras(); 1117 if (extras != null) { 1118 intent.putExtras(extras); 1119 } 1120 } 1121 setResult(resultCode, intent); 1122 finish(); 1123 1124 File path = getFileStreamPath(sTempCropFilename); 1125 path.delete(); 1126 1127 break; 1128 } 1129 } 1130 } 1131 1132 private boolean canTakePicture() { 1133 return isCameraIdle() && mPreviewing && (mPicturesRemaining > 0); 1134 } 1135 1136 private void autoFocus() { 1137 // Initiate autofocus only when preview is started and snapshot is not 1138 // in progress. 1139 if (canTakePicture()) { 1140 Log.v(TAG, "Start autofocus."); 1141 mFocusStartTime = System.currentTimeMillis(); 1142 mFocusState = FOCUSING; 1143 updateFocusIndicator(); 1144 mCameraDevice.autoFocus(mAutoFocusCallback); 1145 } 1146 } 1147 1148 private void cancelAutoFocus() { 1149 // User releases half-pressed focus key. 1150 if (mFocusState == FOCUSING || mFocusState == FOCUS_SUCCESS 1151 || mFocusState == FOCUS_FAIL) { 1152 Log.v(TAG, "Cancel autofocus."); 1153 mCameraDevice.cancelAutoFocus(); 1154 } 1155 if (mFocusState != FOCUSING_SNAP_ON_FINISH) { 1156 clearFocusState(); 1157 } 1158 } 1159 1160 private void clearFocusState() { 1161 mFocusState = FOCUS_NOT_STARTED; 1162 updateFocusIndicator(); 1163 } 1164 1165 private void updateFocusIndicator() { 1166 if (mFocusRectangle == null) return; 1167 1168 if (mFocusState == FOCUSING || mFocusState == FOCUSING_SNAP_ON_FINISH) { 1169 mFocusRectangle.showStart(); 1170 } else if (mFocusState == FOCUS_SUCCESS) { 1171 mFocusRectangle.showSuccess(); 1172 } else if (mFocusState == FOCUS_FAIL) { 1173 mFocusRectangle.showFail(); 1174 } else { 1175 mFocusRectangle.clear(); 1176 } 1177 } 1178 1179 @Override 1180 public void onBackPressed() { 1181 if (!isCameraIdle()) { 1182 // ignore backs while we're taking a picture 1183 return; 1184 } 1185 super.onBackPressed(); 1186 } 1187 1188 @Override 1189 public boolean onKeyDown(int keyCode, KeyEvent event) { 1190 switch (keyCode) { 1191 case KeyEvent.KEYCODE_FOCUS: 1192 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1193 doFocus(true); 1194 } 1195 return true; 1196 case KeyEvent.KEYCODE_CAMERA: 1197 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1198 doSnap(); 1199 } 1200 return true; 1201 case KeyEvent.KEYCODE_DPAD_CENTER: 1202 // If we get a dpad center event without any focused view, move 1203 // the focus to the shutter button and press it. 1204 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1205 // Start auto-focus immediately to reduce shutter lag. After 1206 // the shutter button gets the focus, doFocus() will be 1207 // called again but it is fine. 1208 doFocus(true); 1209 if (mShutterButton.isInTouchMode()) { 1210 mShutterButton.requestFocusFromTouch(); 1211 } else { 1212 mShutterButton.requestFocus(); 1213 } 1214 mShutterButton.setPressed(true); 1215 } 1216 return true; 1217 } 1218 1219 return super.onKeyDown(keyCode, event); 1220 } 1221 1222 @Override 1223 public boolean onKeyUp(int keyCode, KeyEvent event) { 1224 switch (keyCode) { 1225 case KeyEvent.KEYCODE_FOCUS: 1226 if (mFirstTimeInitialized) { 1227 doFocus(false); 1228 } 1229 return true; 1230 } 1231 return super.onKeyUp(keyCode, event); 1232 } 1233 1234 private void doSnap() { 1235 // If the user has half-pressed the shutter and focus is completed, we 1236 // can take the photo right away. If the focus mode is infinity, we can 1237 // also take the photo. 1238 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1239 || (mFocusState == FOCUS_SUCCESS 1240 || mFocusState == FOCUS_FAIL)) { 1241 mImageCapture.onSnap(); 1242 } else if (mFocusState == FOCUSING) { 1243 // Half pressing the shutter (i.e. the focus button event) will 1244 // already have requested AF for us, so just request capture on 1245 // focus here. 1246 mFocusState = FOCUSING_SNAP_ON_FINISH; 1247 } else if (mFocusState == FOCUS_NOT_STARTED) { 1248 // Focus key down event is dropped for some reasons. Just ignore. 1249 } 1250 } 1251 1252 private void doFocus(boolean pressed) { 1253 // Do the focus if the mode is not infinity. 1254 if (!mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)) { 1255 if (pressed) { // Focus key down. 1256 autoFocus(); 1257 } else { // Focus key up. 1258 cancelAutoFocus(); 1259 } 1260 } 1261 } 1262 1263 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1264 // Make sure we have a surface in the holder before proceeding. 1265 if (holder.getSurface() == null) { 1266 Log.d(TAG, "holder.getSurface() == null"); 1267 return; 1268 } 1269 1270 // The mCameraDevice will be null if it fails to connect to the camera 1271 // hardware. In this case we will show a dialog and then finish the 1272 // activity, so it's OK to ignore it. 1273 if (mCameraDevice == null) return; 1274 1275 mSurfaceHolder = holder; 1276 mViewFinderHeight = h; 1277 1278 // Sometimes surfaceChanged is called after onPause. Ignore it. 1279 if (mPausing || isFinishing()) return; 1280 1281 // Set preview display if the surface is being created. Preview was 1282 // already started. 1283 if (holder.isCreating()) { 1284 setPreviewDisplay(holder); 1285 } 1286 1287 // If first time initialization is not finished, send a message to do 1288 // it later. We want to finish surfaceChanged as soon as possible to let 1289 // user see preview first. 1290 if (!mFirstTimeInitialized) { 1291 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1292 } else { 1293 initializeSecondTime(); 1294 } 1295 } 1296 1297 public void surfaceCreated(SurfaceHolder holder) { 1298 } 1299 1300 public void surfaceDestroyed(SurfaceHolder holder) { 1301 stopPreview(); 1302 mSurfaceHolder = null; 1303 } 1304 1305 private void closeCamera() { 1306 if (mCameraDevice != null) { 1307 CameraHolder.instance().release(); 1308 mCameraDevice = null; 1309 mPreviewing = false; 1310 } 1311 } 1312 1313 private void ensureCameraDevice() throws CameraHardwareException { 1314 if (mCameraDevice == null) { 1315 mCameraDevice = CameraHolder.instance().open(); 1316 } 1317 } 1318 1319 private void updateLastImage() { 1320 IImageList list = ImageManager.makeImageList( 1321 mContentResolver, 1322 dataLocation(), 1323 ImageManager.INCLUDE_IMAGES, 1324 ImageManager.SORT_ASCENDING, 1325 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1326 int count = list.getCount(); 1327 if (count > 0) { 1328 IImage image = list.getImageAt(count - 1); 1329 Uri uri = image.fullSizeImageUri(); 1330 mThumbController.setData(uri, image.miniThumbBitmap()); 1331 } else { 1332 mThumbController.setData(null, null); 1333 } 1334 list.close(); 1335 } 1336 1337 private void showCameraErrorAndFinish() { 1338 Resources ress = getResources(); 1339 Util.showFatalErrorAndFinish(Camera.this, 1340 ress.getString(R.string.camera_error_title), 1341 ress.getString(R.string.cannot_connect_camera)); 1342 } 1343 1344 private void restartPreview() { 1345 // make sure the surfaceview fills the whole screen when previewing 1346 mSurfaceView.setAspectRatio(VideoPreview.DONT_CARE); 1347 try { 1348 startPreview(); 1349 } catch (CameraHardwareException e) { 1350 showCameraErrorAndFinish(); 1351 return; 1352 } 1353 1354 // Calculate this in advance of each shot so we don't add to shutter 1355 // latency. It's true that someone else could write to the SD card in 1356 // the mean time and fill it, but that could have happened between the 1357 // shutter press and saving the JPEG too. 1358 calculatePicturesRemaining(); 1359 } 1360 1361 private void setPreviewDisplay(SurfaceHolder holder) { 1362 try { 1363 mCameraDevice.setPreviewDisplay(holder); 1364 } catch (Throwable ex) { 1365 closeCamera(); 1366 throw new RuntimeException("setPreviewDisplay failed", ex); 1367 } 1368 } 1369 1370 private void startPreview() throws CameraHardwareException { 1371 if (mPausing || isFinishing()) return; 1372 1373 ensureCameraDevice(); 1374 1375 // If we're previewing already, stop the preview first (this will blank 1376 // the screen). 1377 if (mPreviewing) stopPreview(); 1378 1379 setPreviewDisplay(mSurfaceHolder); 1380 setCameraParameters(); 1381 1382 final long wallTimeStart = SystemClock.elapsedRealtime(); 1383 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1384 1385 // Set one shot preview callback for latency measurement. 1386 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1387 mCameraDevice.setErrorCallback(mErrorCallback); 1388 1389 try { 1390 Log.v(TAG, "startPreview"); 1391 mCameraDevice.startPreview(); 1392 } catch (Throwable ex) { 1393 closeCamera(); 1394 throw new RuntimeException("startPreview failed", ex); 1395 } 1396 mPreviewing = true; 1397 mStatus = IDLE; 1398 1399 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1400 long wallTimeEnd = SystemClock.elapsedRealtime(); 1401 if ((wallTimeEnd - wallTimeStart) > 3000) { 1402 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1403 + " ms. Thread time was" 1404 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1405 } 1406 } 1407 1408 private void stopPreview() { 1409 if (mCameraDevice != null && mPreviewing) { 1410 Log.v(TAG, "stopPreview"); 1411 mCameraDevice.stopPreview(); 1412 } 1413 mPreviewing = false; 1414 // If auto focus was in progress, it would have been canceled. 1415 clearFocusState(); 1416 } 1417 1418 private void resizeForPreviewAspectRatio(View v) { 1419 ViewGroup.LayoutParams params; 1420 params = v.getLayoutParams(); 1421 Size size = mParameters.getPreviewSize(); 1422 params.width = (int) (params.height * size.width / size.height); 1423 Log.v(TAG, "resize to " + params.width + "x" + params.height); 1424 v.setLayoutParams(params); 1425 } 1426 1427 private Size getOptimalPreviewSize(List<Size> sizes) { 1428 Size optimalSize = null; 1429 if (sizes != null) { 1430 optimalSize = sizes.get(0); 1431 for (int i = 1; i < sizes.size(); i++) { 1432 if (Math.abs(sizes.get(i).height - mViewFinderHeight) < 1433 Math.abs(optimalSize.height - mViewFinderHeight)) { 1434 optimalSize = sizes.get(i); 1435 } 1436 } 1437 Log.v(TAG, "Optimal preview size is " + optimalSize.width + "x" 1438 + optimalSize.height); 1439 } 1440 return optimalSize; 1441 } 1442 1443 private static boolean isSupported(String value, List<String> supported) { 1444 return supported == null ? false : supported.indexOf(value) >= 0; 1445 } 1446 1447 private void setCameraParameters() { 1448 mParameters = mCameraDevice.getParameters(); 1449 1450 // Reset preview frame rate to the maximum because it may be lowered by 1451 // video camera application. 1452 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1453 if (frameRates != null) { 1454 Integer max = Collections.max(frameRates); 1455 mParameters.setPreviewFrameRate(max); 1456 } 1457 1458 // Set a preview size that is closest to the viewfinder height. 1459 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1460 Size optimalSize = getOptimalPreviewSize(sizes); 1461 if (optimalSize != null) { 1462 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1463 } 1464 1465 // Set picture size. 1466 String pictureSize = mPreferences.getString( 1467 CameraSettings.KEY_PICTURE_SIZE, null); 1468 if (pictureSize == null) { 1469 CameraSettings.initialCameraPictureSize(this, mParameters); 1470 } else { 1471 List<Size> supported = mParameters.getSupportedPictureSizes(); 1472 CameraSettings.setCameraPictureSize( 1473 pictureSize, supported, mParameters); 1474 } 1475 1476 // Set JPEG quality. 1477 String jpegQuality = mPreferences.getString( 1478 CameraSettings.KEY_JPEG_QUALITY, 1479 getString(R.string.pref_camera_jpegquality_default)); 1480 mParameters.setJpegQuality(Integer.parseInt(jpegQuality)); 1481 1482 // For the following settings, we need to check if the settings are 1483 // still supported by latest driver, if not, ignore the settings. 1484 1485 // Set flash mode. 1486 String flashMode = mPreferences.getString( 1487 CameraSettings.KEY_FLASH_MODE, 1488 getString(R.string.pref_camera_flashmode_default)); 1489 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1490 if (isSupported(flashMode, supportedFlash)) { 1491 mParameters.setFlashMode(flashMode); 1492 } else { 1493 // If the current flashMode is not support, show the 1494 // FLASH_MODE_OFF icon. 1495 flashMode = Parameters.FLASH_MODE_OFF; 1496 } 1497 1498 // We post the runner because this function can be called from 1499 // non-UI thread (i.e., startPreviewThread). 1500 final String finalFlashMode = flashMode; 1501 mHandler.post(new Runnable() { 1502 public void run() { 1503 mFlashIndicator.setMode(finalFlashMode); 1504 } 1505 }); 1506 1507 // Set white balance parameter. 1508 String whiteBalance = mPreferences.getString( 1509 CameraSettings.KEY_WHITE_BALANCE, 1510 getString(R.string.pref_camera_whitebalance_default)); 1511 if (isSupported(whiteBalance, mParameters.getSupportedWhiteBalance())) { 1512 mParameters.setWhiteBalance(whiteBalance); 1513 } 1514 1515 // Set color effect parameter. 1516 String colorEffect = mPreferences.getString( 1517 CameraSettings.KEY_COLOR_EFFECT, 1518 getString(R.string.pref_camera_coloreffect_default)); 1519 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 1520 mParameters.setColorEffect(colorEffect); 1521 } 1522 1523 // Set scene mode. 1524 String sceneMode = mPreferences.getString( 1525 CameraSettings.KEY_SCENE_MODE, 1526 getString(R.string.pref_camera_scenemode_default)); 1527 if (isSupported(sceneMode, mParameters.getSupportedSceneModes())) { 1528 mParameters.setSceneMode(sceneMode); 1529 } 1530 1531 // Set focus mode. 1532 mFocusMode = mPreferences.getString( 1533 CameraSettings.KEY_FOCUS_MODE, 1534 getString(R.string.pref_camera_focusmode_default)); 1535 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 1536 mParameters.setFocusMode(mFocusMode); 1537 } 1538 1539 mCameraDevice.setParameters(mParameters); 1540 } 1541 1542 private void gotoGallery() { 1543 MenuHelper.gotoCameraImageGallery(this); 1544 } 1545 1546 private void viewLastImage() { 1547 if (mThumbController.isUriValid()) { 1548 Uri targetUri = mThumbController.getUri(); 1549 targetUri = targetUri.buildUpon().appendQueryParameter( 1550 "bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); 1551 Intent intent = new Intent(this, ReviewImage.class); 1552 intent.setData(targetUri); 1553 intent.putExtra(MediaStore.EXTRA_FULL_SCREEN, true); 1554 intent.putExtra(MediaStore.EXTRA_SHOW_ACTION_ICONS, true); 1555 intent.putExtra("com.android.camera.ReviewMode", true); 1556 try { 1557 startActivity(intent); 1558 } catch (ActivityNotFoundException ex) { 1559 Log.e(TAG, "review image fail", ex); 1560 } 1561 } else { 1562 Log.e(TAG, "Can't view last image."); 1563 } 1564 } 1565 1566 private void startReceivingLocationUpdates() { 1567 if (mLocationManager != null) { 1568 try { 1569 mLocationManager.requestLocationUpdates( 1570 LocationManager.NETWORK_PROVIDER, 1571 1000, 1572 0F, 1573 mLocationListeners[1]); 1574 } catch (java.lang.SecurityException ex) { 1575 Log.i(TAG, "fail to request location update, ignore", ex); 1576 } catch (IllegalArgumentException ex) { 1577 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1578 } 1579 try { 1580 mLocationManager.requestLocationUpdates( 1581 LocationManager.GPS_PROVIDER, 1582 1000, 1583 0F, 1584 mLocationListeners[0]); 1585 } catch (java.lang.SecurityException ex) { 1586 Log.i(TAG, "fail to request location update, ignore", ex); 1587 } catch (IllegalArgumentException ex) { 1588 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1589 } 1590 } 1591 } 1592 1593 private void stopReceivingLocationUpdates() { 1594 if (mLocationManager != null) { 1595 for (int i = 0; i < mLocationListeners.length; i++) { 1596 try { 1597 mLocationManager.removeUpdates(mLocationListeners[i]); 1598 } catch (Exception ex) { 1599 Log.i(TAG, "fail to remove location listners, ignore", ex); 1600 } 1601 } 1602 } 1603 } 1604 1605 private Location getCurrentLocation() { 1606 // go in best to worst order 1607 for (int i = 0; i < mLocationListeners.length; i++) { 1608 Location l = mLocationListeners[i].current(); 1609 if (l != null) return l; 1610 } 1611 return null; 1612 } 1613 1614 private boolean isCameraIdle() { 1615 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1616 } 1617 1618 private boolean isImageCaptureIntent() { 1619 String action = getIntent().getAction(); 1620 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1621 } 1622 1623 private void setupCaptureParams() { 1624 Bundle myExtras = getIntent().getExtras(); 1625 if (myExtras != null) { 1626 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1627 mCropValue = myExtras.getString("crop"); 1628 } 1629 } 1630 1631 private void showPostCaptureAlert() { 1632 if (mIsImageCaptureIntent) { 1633 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1634 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1635 for (int id : pickIds) { 1636 View button = findViewById(id); 1637 ((View) button.getParent()).setVisibility(View.VISIBLE); 1638 } 1639 } 1640 } 1641 1642 private void hidePostCaptureAlert() { 1643 if (mIsImageCaptureIntent) { 1644 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1645 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1646 for (int id : pickIds) { 1647 View button = findViewById(id); 1648 ((View) button.getParent()).setVisibility(View.GONE); 1649 } 1650 } 1651 } 1652 1653 private int calculatePicturesRemaining() { 1654 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1655 return mPicturesRemaining; 1656 } 1657 1658 @Override 1659 public boolean onPrepareOptionsMenu(Menu menu) { 1660 super.onPrepareOptionsMenu(menu); 1661 // Only show the menu when camera is idle. 1662 for (int i = 0; i < menu.size(); i++) { 1663 menu.getItem(i).setVisible(isCameraIdle()); 1664 } 1665 1666 return true; 1667 } 1668 1669 @Override 1670 public boolean onCreateOptionsMenu(Menu menu) { 1671 super.onCreateOptionsMenu(menu); 1672 1673 if (mIsImageCaptureIntent) { 1674 // No options menu for attach mode. 1675 return false; 1676 } else { 1677 addBaseMenuItems(menu); 1678 } 1679 return true; 1680 } 1681 1682 private void addBaseMenuItems(Menu menu) { 1683 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 1684 MenuHelper.POSITION_GOTO_GALLERY, 1685 R.string.camera_gallery_photos_text) 1686 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1687 public boolean onMenuItemClick(MenuItem item) { 1688 gotoGallery(); 1689 return true; 1690 } 1691 }); 1692 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1693 mGalleryItems.add(gallery); 1694 1695 MenuItem item = menu.add(Menu.NONE, Menu.NONE, 1696 MenuHelper.POSITION_CAMERA_SETTING, R.string.settings) 1697 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1698 public boolean onMenuItemClick(MenuItem item) { 1699 showOnScreenSettings(); 1700 return true; 1701 } 1702 }); 1703 item.setIcon(android.R.drawable.ic_menu_preferences); 1704 } 1705 1706 public boolean onSwitchChanged(Switcher source, boolean onOff) { 1707 if (onOff == SWITCH_VIDEO) { 1708 if (!isCameraIdle()) return false; 1709 MenuHelper.gotoVideoMode(this); 1710 finish(); 1711 } 1712 return true; 1713 } 1714 1715 public void onSharedPreferenceChanged( 1716 SharedPreferences preferences, String key) { 1717 // ignore the events after "onPause()" 1718 if (mPausing) return; 1719 1720 if (CameraSettings.KEY_RECORD_LOCATION.equals(key)) { 1721 mRecordLocation = preferences.getBoolean(key, false); 1722 if (mRecordLocation) { 1723 startReceivingLocationUpdates(); 1724 } else { 1725 stopReceivingLocationUpdates(); 1726 } 1727 } else { 1728 // All preferences except RECORD_LOCATION are camera parameters. 1729 // Call setCameraParameters to take effect now. 1730 setCameraParameters(); 1731 } 1732 } 1733 1734 @Override 1735 public void onUserInteraction() { 1736 super.onUserInteraction(); 1737 keepScreenOnAwhile(); 1738 } 1739 1740 private void resetScreenOn() { 1741 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1742 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1743 } 1744 1745 private void keepScreenOnAwhile() { 1746 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1747 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1748 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1749 } 1750} 1751 1752class FocusRectangle extends View { 1753 1754 @SuppressWarnings("unused") 1755 private static final String TAG = "FocusRectangle"; 1756 1757 public FocusRectangle(Context context, AttributeSet attrs) { 1758 super(context, attrs); 1759 } 1760 1761 private void setDrawable(int resid) { 1762 setBackgroundDrawable(getResources().getDrawable(resid)); 1763 } 1764 1765 public void showStart() { 1766 setDrawable(R.drawable.focus_focusing); 1767 } 1768 1769 public void showSuccess() { 1770 setDrawable(R.drawable.focus_focused); 1771 } 1772 1773 public void showFail() { 1774 setDrawable(R.drawable.focus_focus_failed); 1775 } 1776 1777 public void clear() { 1778 setBackgroundDrawable(null); 1779 } 1780} 1781