Camera.java revision c30e5c21c3858c15473427d82608c473d44bf3e4
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; 66import android.widget.ZoomButtonsController; 67 68import com.android.camera.gallery.IImage; 69import com.android.camera.gallery.IImageList; 70 71import java.io.File; 72import java.io.FileNotFoundException; 73import java.io.FileOutputStream; 74import java.io.IOException; 75import java.io.OutputStream; 76import java.util.ArrayList; 77import java.util.Collections; 78import java.util.List; 79 80/** 81 * Activity of the Camera which used to see preview and take pictures. 82 */ 83public class Camera extends Activity implements View.OnClickListener, 84 ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, 85 Switcher.OnSwitchListener, OnScreenSettings.OnVisibilityChangedListener, 86 OnSharedPreferenceChangeListener { 87 88 private static final String TAG = "camera"; 89 90 private static final int CROP_MSG = 1; 91 private static final int FIRST_TIME_INIT = 2; 92 private static final int RESTART_PREVIEW = 3; 93 private static final int CLEAR_SCREEN_DELAY = 4; 94 95 private static final String GPS_MODE_ON = "on"; 96 private static final String GPS_MODE_OFF = "off"; 97 98 private static final int SCREEN_DELAY = 2 * 60 * 1000; 99 private static final int FOCUS_BEEP_VOLUME = 100; 100 101 private double mZoomValue; // The current zoom value. 102 private double mZoomStep; 103 private double mZoomMax; 104 public static final double ZOOM_STEP_MIN = 0.25; 105 public static final String ZOOM_STOP = "stop"; 106 public static final String ZOOM_IMMEDIATE = "zoom-immediate"; 107 public static final String ZOOM_CONTINUOUS = "zoom-continuous"; 108 public static final double ZOOM_MIN = 1.0; 109 public static final String ZOOM_SPEED = "99"; 110 111 private Parameters mParameters; 112 113 // The parameter strings to communicate with camera driver. 114 public static final String PARM_ZOOM_STATE = "zoom-state"; 115 public static final String PARM_ZOOM_STEP = "zoom-step"; 116 public static final String PARM_ZOOM_TO_LEVEL = "zoom-to-level"; 117 public static final String PARM_ZOOM_SPEED = "zoom-speed"; 118 public static final String PARM_ZOOM_MAX = "max-picture-continuous-zoom"; 119 120 private OrientationEventListener mOrientationListener; 121 private int mLastOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 122 private SharedPreferences mPreferences; 123 124 private static final int IDLE = 1; 125 private static final int SNAPSHOT_IN_PROGRESS = 2; 126 127 private static final boolean SWITCH_CAMERA = true; 128 private static final boolean SWITCH_VIDEO = false; 129 130 private int mStatus = IDLE; 131 private static final String sTempCropFilename = "crop-temp"; 132 133 private android.hardware.Camera mCameraDevice; 134 private VideoPreview mSurfaceView; 135 private SurfaceHolder mSurfaceHolder = null; 136 private ShutterButton mShutterButton; 137 private FocusRectangle mFocusRectangle; 138 private IconIndicator mGpsIndicator; 139 private IconIndicator mFlashIndicator; 140 private ToneGenerator mFocusToneGenerator; 141 private ZoomButtonsController mZoomButtons; 142 private GestureDetector mGestureDetector; 143 private Switcher mSwitcher; 144 private boolean mStartPreviewFail = false; 145 146 // mPostCaptureAlert, mLastPictureButton, mThumbController 147 // are non-null only if isImageCaptureIntent() is true. 148 private ImageView mLastPictureButton; 149 private ThumbnailController mThumbController; 150 151 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 152 private String mCropValue; 153 private Uri mSaveUri; 154 155 private int mViewFinderHeight; 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 findViewById(R.id.btn_gripper).setVisibility( 389 visible ? View.INVISIBLE : View.VISIBLE); 390 } 391 392 private boolean isZooming() { 393 mParameters = mCameraDevice.getParameters(); 394 return "continuous".equals(mParameters.get(PARM_ZOOM_STATE)); 395 } 396 397 private void zoomToLevel(String type, double zoomValue) { 398 if (zoomValue > mZoomMax) zoomValue = mZoomMax; 399 if (zoomValue < ZOOM_MIN) zoomValue = ZOOM_MIN; 400 401 // If the application sets a unchanged zoom value, the driver will stuck 402 // at the zoom state. This is a work-around to ensure the state is at 403 // "stop". 404 mParameters.set(PARM_ZOOM_STATE, ZOOM_STOP); 405 mCameraDevice.setParameters(mParameters); 406 407 mParameters.set(PARM_ZOOM_TO_LEVEL, Double.toString(zoomValue)); 408 mParameters.set(PARM_ZOOM_STATE, type); 409 mCameraDevice.setParameters(mParameters); 410 411 if (ZOOM_IMMEDIATE.equals(type)) mZoomValue = zoomValue; 412 } 413 414 private void updateZoomButtonsEnabled() { 415 mZoomButtons.setZoomInEnabled(mZoomValue < mZoomMax); 416 mZoomButtons.setZoomOutEnabled(mZoomValue > ZOOM_MIN); 417 } 418 419 private class ZoomGestureListener extends 420 GestureDetector.SimpleOnGestureListener { 421 @Override 422 public boolean onDown(MotionEvent e) { 423 // Show zoom buttons only when preview is started and snapshot 424 // is not in progress. mZoomButtons may be null if it is not 425 // initialized. 426 if (!mPausing && isCameraIdle() && mPreviewing 427 && mZoomButtons != null) { 428 mZoomButtons.setVisible(true); 429 } 430 return true; 431 } 432 433 @Override 434 public boolean onDoubleTap(MotionEvent e) { 435 // Perform zoom only when preview is started and snapshot is not in 436 // progress. 437 if (mPausing || !isCameraIdle() || !mPreviewing 438 || mZoomButtons == null || isZooming()) { 439 return false; 440 } 441 442 if (mZoomValue < mZoomMax) { 443 // Zoom in to the maximum. 444 while (mZoomValue < mZoomMax) { 445 zoomToLevel(ZOOM_IMMEDIATE, mZoomValue + ZOOM_STEP_MIN); 446 // Wait for a while so we are not changing zoom too fast. 447 try { 448 Thread.sleep(5); 449 } catch (InterruptedException ex) { 450 } 451 } 452 } else { 453 // Zoom out to the minimum. 454 while (mZoomValue > ZOOM_MIN) { 455 zoomToLevel(ZOOM_IMMEDIATE, mZoomValue - ZOOM_STEP_MIN); 456 // Wait for a while so we are not changing zoom too fast. 457 try { 458 Thread.sleep(5); 459 } catch (InterruptedException ex) { 460 } 461 } 462 } 463 updateZoomButtonsEnabled(); 464 return true; 465 } 466 } 467 468 @Override 469 public boolean dispatchTouchEvent(MotionEvent m) { 470 if (!super.dispatchTouchEvent(m) && mGestureDetector != null) { 471 return mGestureDetector.onTouchEvent(m); 472 } 473 return true; 474 } 475 476 LocationListener [] mLocationListeners = new LocationListener[] { 477 new LocationListener(LocationManager.GPS_PROVIDER), 478 new LocationListener(LocationManager.NETWORK_PROVIDER) 479 }; 480 481 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 482 @Override 483 public void onReceive(Context context, Intent intent) { 484 String action = intent.getAction(); 485 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 486 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 487 || action.equals(Intent.ACTION_MEDIA_CHECKING) 488 || action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) { 489 checkStorage(); 490 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 491 checkStorage(); 492 if (!mIsImageCaptureIntent) { 493 updateThumbnailButton(); 494 } 495 } 496 } 497 }; 498 499 private class LocationListener 500 implements android.location.LocationListener { 501 Location mLastLocation; 502 boolean mValid = false; 503 String mProvider; 504 505 public LocationListener(String provider) { 506 mProvider = provider; 507 mLastLocation = new Location(mProvider); 508 } 509 510 public void onLocationChanged(Location newLocation) { 511 if (newLocation.getLatitude() == 0.0 512 && newLocation.getLongitude() == 0.0) { 513 // Hack to filter out 0.0,0.0 locations 514 return; 515 } 516 // If GPS is available before start camera, we won't get status 517 // update so update GPS indicator when we receive data. 518 if (mRecordLocation 519 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 520 mGpsIndicator.setMode(GPS_MODE_ON); 521 } 522 mLastLocation.set(newLocation); 523 mValid = true; 524 } 525 526 public void onProviderEnabled(String provider) { 527 } 528 529 public void onProviderDisabled(String provider) { 530 mValid = false; 531 } 532 533 public void onStatusChanged( 534 String provider, int status, Bundle extras) { 535 switch(status) { 536 case LocationProvider.OUT_OF_SERVICE: 537 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 538 mValid = false; 539 if (mRecordLocation && 540 LocationManager.GPS_PROVIDER.equals(provider)) { 541 mGpsIndicator.setMode(GPS_MODE_OFF); 542 } 543 break; 544 } 545 } 546 } 547 548 public Location current() { 549 return mValid ? mLastLocation : null; 550 } 551 } 552 553 private final class OneShotPreviewCallback 554 implements android.hardware.Camera.PreviewCallback { 555 public void onPreviewFrame(byte[] data, 556 android.hardware.Camera camera) { 557 long now = System.currentTimeMillis(); 558 if (mJpegPictureCallbackTime != 0) { 559 mJpegPictureCallbackTimeLag = now - mJpegPictureCallbackTime; 560 Log.v(TAG, "mJpegPictureCallbackTimeLag = " 561 + mJpegPictureCallbackTimeLag + "ms"); 562 mJpegPictureCallbackTime = 0; 563 } else { 564 Log.v(TAG, "Got first frame"); 565 } 566 } 567 } 568 569 private final class ShutterCallback 570 implements android.hardware.Camera.ShutterCallback { 571 public void onShutter() { 572 mShutterCallbackTime = System.currentTimeMillis(); 573 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 574 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 575 clearFocusState(); 576 } 577 } 578 579 private final class RawPictureCallback implements PictureCallback { 580 public void onPictureTaken( 581 byte [] rawData, android.hardware.Camera camera) { 582 mRawPictureCallbackTime = System.currentTimeMillis(); 583 mShutterAndRawPictureCallbackTime = 584 mRawPictureCallbackTime - mShutterCallbackTime; 585 Log.v(TAG, "mShutterAndRawPictureCallbackTime = " 586 + mShutterAndRawPictureCallbackTime + "ms"); 587 } 588 } 589 590 private final class JpegPictureCallback implements PictureCallback { 591 Location mLocation; 592 593 public JpegPictureCallback(Location loc) { 594 mLocation = loc; 595 } 596 597 public void onPictureTaken( 598 final byte [] jpegData, final android.hardware.Camera camera) { 599 if (mPausing) { 600 return; 601 } 602 603 mJpegPictureCallbackTime = System.currentTimeMillis(); 604 mRawPictureAndJpegPictureCallbackTime = 605 mJpegPictureCallbackTime - mRawPictureCallbackTime; 606 Log.v(TAG, "mRawPictureAndJpegPictureCallbackTime = " 607 + mRawPictureAndJpegPictureCallbackTime + "ms"); 608 mImageCapture.storeImage(jpegData, camera, mLocation); 609 610 if (!mIsImageCaptureIntent) { 611 long delay = 1200 - ( 612 System.currentTimeMillis() - mRawPictureCallbackTime); 613 mHandler.sendEmptyMessageDelayed( 614 RESTART_PREVIEW, Math.max(delay, 0)); 615 } 616 } 617 } 618 619 private final class AutoFocusCallback 620 implements android.hardware.Camera.AutoFocusCallback { 621 public void onAutoFocus( 622 boolean focused, android.hardware.Camera camera) { 623 mFocusCallbackTime = System.currentTimeMillis(); 624 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 625 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 626 if (mFocusState == FOCUSING_SNAP_ON_FINISH) { 627 // Take the picture no matter focus succeeds or fails. No need 628 // to play the AF sound if we're about to play the shutter 629 // sound. 630 if (focused) { 631 mFocusState = FOCUS_SUCCESS; 632 } else { 633 mFocusState = FOCUS_FAIL; 634 } 635 mImageCapture.onSnap(); 636 } else if (mFocusState == FOCUSING) { 637 // User is half-pressing the focus key. Play the focus tone. 638 // Do not take the picture now. 639 ToneGenerator tg = mFocusToneGenerator; 640 if (tg != null) { 641 tg.startTone(ToneGenerator.TONE_PROP_BEEP2); 642 } 643 if (focused) { 644 mFocusState = FOCUS_SUCCESS; 645 } else { 646 mFocusState = FOCUS_FAIL; 647 } 648 } else if (mFocusState == FOCUS_NOT_STARTED) { 649 // User has released the focus key before focus completes. 650 // Do nothing. 651 } 652 updateFocusIndicator(); 653 } 654 } 655 656 private final class ErrorCallback 657 implements android.hardware.Camera.ErrorCallback { 658 public void onError(int error, android.hardware.Camera camera) { 659 if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) { 660 mMediaServerDied = true; 661 Log.v(TAG, "media server died"); 662 } 663 } 664 } 665 666 private final class ZoomCallback 667 implements android.hardware.Camera.ZoomCallback { 668 public void onZoomUpdate(int zoomLevel, 669 android.hardware.Camera camera) { 670 mZoomValue = (double) zoomLevel / 1000; 671 Log.v(TAG, "ZoomCallback: zoom level=" + zoomLevel); 672 updateZoomButtonsEnabled(); 673 } 674 } 675 676 private class ImageCapture { 677 678 private boolean mCancel = false; 679 680 private Uri mLastContentUri; 681 682 byte[] mCaptureOnlyData; 683 684 // Returns the rotation degree in the jpeg header. 685 private int storeImage(byte[] data, Location loc) { 686 try { 687 long dateTaken = System.currentTimeMillis(); 688 String name = createName(dateTaken) + ".jpg"; 689 mLastContentUri = ImageManager.addImage( 690 mContentResolver, 691 name, 692 dateTaken, 693 loc, // location for the database goes here 694 0, // the dsp will use the right orientation so 695 // don't "double set it" 696 ImageManager.CAMERA_IMAGE_BUCKET_NAME, 697 name); 698 if (mLastContentUri == null) { 699 // this means we got an error 700 mCancel = true; 701 } 702 int degree = 0; 703 if (!mCancel) { 704 degree = ImageManager.storeImage(mLastContentUri, mContentResolver, 705 null, data); 706 ImageManager.setImageSize(mContentResolver, mLastContentUri, 707 new File(ImageManager.CAMERA_IMAGE_BUCKET_NAME, 708 name).length()); 709 } 710 return degree; 711 } catch (Exception ex) { 712 Log.e(TAG, "Exception while compressing image.", ex); 713 return 0; 714 } 715 } 716 717 public void storeImage(final byte[] data, 718 android.hardware.Camera camera, Location loc) { 719 if (!mIsImageCaptureIntent) { 720 int degree = storeImage(data, loc); 721 sendBroadcast(new Intent( 722 "com.android.camera.NEW_PICTURE", mLastContentUri)); 723 setLastPictureThumb(data, degree, 724 mImageCapture.getLastCaptureUri()); 725 mThumbController.updateDisplayIfNeeded(); 726 } else { 727 mCaptureOnlyData = data; 728 showPostCaptureAlert(); 729 } 730 } 731 732 /** 733 * Initiate the capture of an image. 734 */ 735 public void initiate() { 736 if (mCameraDevice == null) { 737 return; 738 } 739 740 mCancel = false; 741 742 capture(); 743 } 744 745 public Uri getLastCaptureUri() { 746 return mLastContentUri; 747 } 748 749 public byte[] getLastCaptureData() { 750 return mCaptureOnlyData; 751 } 752 753 private void capture() { 754 mCaptureOnlyData = null; 755 756 // Set rotation. 757 int orientation = mLastOrientation; 758 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 759 orientation += 90; 760 } 761 orientation = ImageManager.roundOrientation(orientation); 762 Log.v(TAG, "mLastOrientation = " + mLastOrientation 763 + ", orientation = " + orientation); 764 mParameters.setRotation(orientation); 765 766 // Clear previous GPS location from the parameters. 767 mParameters.removeGpsData(); 768 769 // Set GPS location. 770 Location loc = mRecordLocation ? getCurrentLocation() : null; 771 if (loc != null) { 772 double lat = loc.getLatitude(); 773 double lon = loc.getLongitude(); 774 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 775 776 if (hasLatLon) { 777 mParameters.setGpsLatitude(lat); 778 mParameters.setGpsLongitude(lon); 779 if (loc.hasAltitude()) { 780 mParameters.setGpsAltitude(loc.getAltitude()); 781 } else { 782 // for NETWORK_PROVIDER location provider, we may have 783 // no altitude information, but the driver needs it, so 784 // we fake one. 785 mParameters.setGpsAltitude(0); 786 } 787 if (loc.getTime() != 0) { 788 // Location.getTime() is UTC in milliseconds. 789 // gps-timestamp is UTC in seconds. 790 long utcTimeSeconds = loc.getTime() / 1000; 791 mParameters.setGpsTimestamp(utcTimeSeconds); 792 } 793 } else { 794 loc = null; 795 } 796 } 797 798 mCameraDevice.setParameters(mParameters); 799 800 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 801 new JpegPictureCallback(loc)); 802 mPreviewing = false; 803 } 804 805 public void onSnap() { 806 // If we are already in the middle of taking a snapshot then ignore. 807 if (mPausing || mStatus == SNAPSHOT_IN_PROGRESS) { 808 return; 809 } 810 mCaptureStartTime = System.currentTimeMillis(); 811 812 // Don't check the filesystem here, we can't afford the latency. 813 // Instead, check the cached value which was calculated when the 814 // preview was restarted. 815 if (mPicturesRemaining < 1) { 816 updateStorageHint(mPicturesRemaining); 817 return; 818 } 819 820 mStatus = SNAPSHOT_IN_PROGRESS; 821 822 mImageCapture.initiate(); 823 } 824 825 private void clearLastData() { 826 mCaptureOnlyData = null; 827 } 828 } 829 830 public boolean saveDataToFile(String filePath, byte[] data) { 831 FileOutputStream f = null; 832 try { 833 f = new FileOutputStream(filePath); 834 f.write(data); 835 } catch (IOException e) { 836 return false; 837 } finally { 838 MenuHelper.closeSilently(f); 839 } 840 return true; 841 } 842 843 private void setLastPictureThumb(byte[] data, int degree, Uri uri) { 844 BitmapFactory.Options options = new BitmapFactory.Options(); 845 options.inSampleSize = 16; 846 Bitmap lastPictureThumb = 847 BitmapFactory.decodeByteArray(data, 0, data.length, options); 848 lastPictureThumb = Util.rotate(lastPictureThumb, degree); 849 mThumbController.setData(uri, lastPictureThumb); 850 } 851 852 private static String createName(long dateTaken) { 853 return DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString(); 854 } 855 856 @Override 857 public void onCreate(Bundle icicle) { 858 super.onCreate(icicle); 859 860 Window win = getWindow(); 861 win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 862 setContentView(R.layout.camera); 863 mSurfaceView = (VideoPreview) findViewById(R.id.camera_preview); 864 mViewFinderHeight = mSurfaceView.getLayoutParams().height; 865 mPreferences = PreferenceManager.getDefaultSharedPreferences(this); 866 mPreferences.registerOnSharedPreferenceChangeListener(this); 867 868 /* 869 * To reduce startup time, we start the preview in another thread. 870 * We make sure the preview is started at the end of onCreate. 871 */ 872 Thread startPreviewThread = new Thread(new Runnable() { 873 public void run() { 874 try { 875 mStartPreviewFail = false; 876 startPreview(); 877 } catch (CameraHardwareException e) { 878 // In eng build, we throw the exception so that test tool 879 // can detect it and report it 880 if ("eng".equals(Build.TYPE)) { 881 throw new RuntimeException(e); 882 } 883 mStartPreviewFail = true; 884 } 885 } 886 }); 887 startPreviewThread.start(); 888 889 // don't set mSurfaceHolder here. We have it set ONLY within 890 // surfaceChanged / surfaceDestroyed, other parts of the code 891 // assume that when it is set, the surface is also set. 892 SurfaceHolder holder = mSurfaceView.getHolder(); 893 holder.addCallback(this); 894 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 895 896 mIsImageCaptureIntent = isImageCaptureIntent(); 897 if (mIsImageCaptureIntent) { 898 setupCaptureParams(); 899 } 900 901 LayoutInflater inflater = getLayoutInflater(); 902 903 ViewGroup rootView = (ViewGroup) findViewById(R.id.camera); 904 if (mIsImageCaptureIntent) { 905 View controlBar = inflater.inflate( 906 R.layout.attach_camera_control, rootView); 907 controlBar.findViewById(R.id.btn_cancel).setOnClickListener(this); 908 controlBar.findViewById(R.id.btn_retake).setOnClickListener(this); 909 controlBar.findViewById(R.id.btn_done).setOnClickListener(this); 910 } else { 911 inflater.inflate(R.layout.camera_control, rootView); 912 mSwitcher = ((Switcher) findViewById(R.id.camera_switch)); 913 mSwitcher.setOnSwitchListener(this); 914 mSwitcher.addTouchView(findViewById(R.id.camera_switch_set)); 915 } 916 findViewById(R.id.btn_gripper) 917 .setOnTouchListener(new GripperTouchListener()); 918 919 mFlashIndicator = (IconIndicator) findViewById(R.id.flash_icon); 920 921 // Make sure preview is started. 922 try { 923 startPreviewThread.join(); 924 if (mStartPreviewFail) { 925 showCameraErrorAndFinish(); 926 return; 927 } 928 } catch (InterruptedException ex) { 929 // ignore 930 } 931 932 // Resize mVideoPreview to the right aspect ratio. 933 resizeForPreviewAspectRatio(mSurfaceView); 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 boolean onKeyDown(int keyCode, KeyEvent event) { 1339 switch (keyCode) { 1340 case KeyEvent.KEYCODE_BACK: 1341 if (!isCameraIdle()) { 1342 // ignore backs while we're taking a picture 1343 return true; 1344 } 1345 break; 1346 case KeyEvent.KEYCODE_FOCUS: 1347 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1348 doFocus(true); 1349 } 1350 return true; 1351 case KeyEvent.KEYCODE_CAMERA: 1352 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1353 doSnap(); 1354 } 1355 return true; 1356 case KeyEvent.KEYCODE_DPAD_CENTER: 1357 // If we get a dpad center event without any focused view, move 1358 // the focus to the shutter button and press it. 1359 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1360 // Start auto-focus immediately to reduce shutter lag. After 1361 // the shutter button gets the focus, doFocus() will be 1362 // called again but it is fine. 1363 doFocus(true); 1364 if (mShutterButton.isInTouchMode()) { 1365 mShutterButton.requestFocusFromTouch(); 1366 } else { 1367 mShutterButton.requestFocus(); 1368 } 1369 mShutterButton.setPressed(true); 1370 } 1371 return true; 1372 } 1373 1374 return super.onKeyDown(keyCode, event); 1375 } 1376 1377 @Override 1378 public boolean onKeyUp(int keyCode, KeyEvent event) { 1379 switch (keyCode) { 1380 case KeyEvent.KEYCODE_FOCUS: 1381 if (mFirstTimeInitialized) { 1382 doFocus(false); 1383 } 1384 return true; 1385 } 1386 return super.onKeyUp(keyCode, event); 1387 } 1388 1389 private void doSnap() { 1390 // If the user has half-pressed the shutter and focus is completed, we 1391 // can take the photo right away. If the focus mode is infinity, we can 1392 // also take the photo. 1393 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1394 || (mFocusState == FOCUS_SUCCESS 1395 || mFocusState == FOCUS_FAIL)) { 1396 if (mZoomButtons != null) mZoomButtons.setVisible(false); 1397 mImageCapture.onSnap(); 1398 } else if (mFocusState == FOCUSING) { 1399 // Half pressing the shutter (i.e. the focus button event) will 1400 // already have requested AF for us, so just request capture on 1401 // focus here. 1402 mFocusState = FOCUSING_SNAP_ON_FINISH; 1403 } else if (mFocusState == FOCUS_NOT_STARTED) { 1404 // Focus key down event is dropped for some reasons. Just ignore. 1405 } 1406 } 1407 1408 private void doFocus(boolean pressed) { 1409 // Do the focus if the mode is not infinity. 1410 if (!mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY)) { 1411 if (pressed) { // Focus key down. 1412 autoFocus(); 1413 } else { // Focus key up. 1414 cancelAutoFocus(); 1415 } 1416 } 1417 } 1418 1419 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1420 // Make sure we have a surface in the holder before proceeding. 1421 if (holder.getSurface() == null) { 1422 Log.d(TAG, "holder.getSurface() == null"); 1423 return; 1424 } 1425 1426 // The mCameraDevice will be null if it fails to connect to the camera 1427 // hardware. In this case we will show a dialog and then finish the 1428 // activity, so it's OK to ignore it. 1429 if (mCameraDevice == null) return; 1430 1431 mSurfaceHolder = holder; 1432 mViewFinderHeight = h; 1433 1434 // Sometimes surfaceChanged is called after onPause. Ignore it. 1435 if (mPausing || isFinishing()) return; 1436 1437 // Set preview display if the surface is being created. Preview was 1438 // already started. 1439 if (holder.isCreating()) { 1440 setPreviewDisplay(holder); 1441 } 1442 1443 // If first time initialization is not finished, send a message to do 1444 // it later. We want to finish surfaceChanged as soon as possible to let 1445 // user see preview first. 1446 if (!mFirstTimeInitialized) { 1447 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1448 } else { 1449 initializeSecondTime(); 1450 } 1451 } 1452 1453 public void surfaceCreated(SurfaceHolder holder) { 1454 } 1455 1456 public void surfaceDestroyed(SurfaceHolder holder) { 1457 stopPreview(); 1458 mSurfaceHolder = null; 1459 } 1460 1461 private void closeCamera() { 1462 if (mCameraDevice != null) { 1463 CameraHolder.instance().release(); 1464 mCameraDevice = null; 1465 mPreviewing = false; 1466 } 1467 } 1468 1469 private void ensureCameraDevice() throws CameraHardwareException { 1470 if (mCameraDevice == null) { 1471 mCameraDevice = CameraHolder.instance().open(); 1472 } 1473 } 1474 1475 private void updateLastImage() { 1476 IImageList list = ImageManager.makeImageList( 1477 mContentResolver, 1478 dataLocation(), 1479 ImageManager.INCLUDE_IMAGES, 1480 ImageManager.SORT_ASCENDING, 1481 ImageManager.CAMERA_IMAGE_BUCKET_ID); 1482 int count = list.getCount(); 1483 if (count > 0) { 1484 IImage image = list.getImageAt(count - 1); 1485 Uri uri = image.fullSizeImageUri(); 1486 mThumbController.setData(uri, image.miniThumbBitmap()); 1487 } else { 1488 mThumbController.setData(null, null); 1489 } 1490 list.close(); 1491 } 1492 1493 private void showCameraErrorAndFinish() { 1494 Resources ress = getResources(); 1495 Util.showFatalErrorAndFinish(Camera.this, 1496 ress.getString(R.string.camera_error_title), 1497 ress.getString(R.string.cannot_connect_camera)); 1498 } 1499 1500 private void restartPreview() { 1501 // make sure the surfaceview fills the whole screen when previewing 1502 mSurfaceView.setAspectRatio(VideoPreview.DONT_CARE); 1503 try { 1504 startPreview(); 1505 } catch (CameraHardwareException e) { 1506 showCameraErrorAndFinish(); 1507 return; 1508 } 1509 1510 // Calculate this in advance of each shot so we don't add to shutter 1511 // latency. It's true that someone else could write to the SD card in 1512 // the mean time and fill it, but that could have happened between the 1513 // shutter press and saving the JPEG too. 1514 calculatePicturesRemaining(); 1515 } 1516 1517 private void setPreviewDisplay(SurfaceHolder holder) { 1518 try { 1519 mCameraDevice.setPreviewDisplay(holder); 1520 } catch (Throwable ex) { 1521 closeCamera(); 1522 throw new RuntimeException("setPreviewDisplay failed", ex); 1523 } 1524 } 1525 1526 private void startPreview() throws CameraHardwareException { 1527 if (mPausing || isFinishing()) return; 1528 1529 ensureCameraDevice(); 1530 1531 // If we're previewing already, stop the preview first (this will blank 1532 // the screen). 1533 if (mPreviewing) stopPreview(); 1534 1535 setPreviewDisplay(mSurfaceHolder); 1536 1537 setCameraParameters(); 1538 1539 final long wallTimeStart = SystemClock.elapsedRealtime(); 1540 final long threadTimeStart = Debug.threadCpuTimeNanos(); 1541 1542 // Set one shot preview callback for latency measurement. 1543 mCameraDevice.setOneShotPreviewCallback(mOneShotPreviewCallback); 1544 mCameraDevice.setErrorCallback(mErrorCallback); 1545 1546 try { 1547 Log.v(TAG, "startPreview"); 1548 mCameraDevice.startPreview(); 1549 } catch (Throwable ex) { 1550 closeCamera(); 1551 throw new RuntimeException("startPreview failed", ex); 1552 } 1553 mPreviewing = true; 1554 mStatus = IDLE; 1555 1556 long threadTimeEnd = Debug.threadCpuTimeNanos(); 1557 long wallTimeEnd = SystemClock.elapsedRealtime(); 1558 if ((wallTimeEnd - wallTimeStart) > 3000) { 1559 Log.w(TAG, "startPreview() to " + (wallTimeEnd - wallTimeStart) 1560 + " ms. Thread time was" 1561 + (threadTimeEnd - threadTimeStart) / 1000000 + " ms."); 1562 } 1563 } 1564 1565 private void stopPreview() { 1566 if (mCameraDevice != null && mPreviewing) { 1567 Log.v(TAG, "stopPreview"); 1568 mCameraDevice.stopPreview(); 1569 } 1570 mPreviewing = false; 1571 // If auto focus was in progress, it would have been canceled. 1572 clearFocusState(); 1573 } 1574 1575 private void resizeForPreviewAspectRatio(View v) { 1576 ViewGroup.LayoutParams params; 1577 params = v.getLayoutParams(); 1578 Size size = mParameters.getPreviewSize(); 1579 params.width = (int) (params.height * size.width / size.height); 1580 Log.v(TAG, "resize to " + params.width + "x" + params.height); 1581 v.setLayoutParams(params); 1582 } 1583 1584 private Size getOptimalPreviewSize(List<Size> sizes) { 1585 Size optimalSize = null; 1586 if (sizes != null) { 1587 optimalSize = sizes.get(0); 1588 for (int i = 1; i < sizes.size(); i++) { 1589 if (Math.abs(sizes.get(i).height - mViewFinderHeight) < 1590 Math.abs(optimalSize.height - mViewFinderHeight)) { 1591 optimalSize = sizes.get(i); 1592 } 1593 } 1594 Log.v(TAG, "Optimal preview size is " + optimalSize.width + "x" 1595 + optimalSize.height); 1596 } 1597 return optimalSize; 1598 } 1599 1600 private static boolean isSupported(String value, List<String> supported) { 1601 return supported == null ? false : supported.indexOf(value) >= 0; 1602 } 1603 1604 private void setCameraParameters() { 1605 mParameters = mCameraDevice.getParameters(); 1606 1607 // Reset preview frame rate to the maximum because it may be lowered by 1608 // video camera application. 1609 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1610 if (frameRates != null) { 1611 Integer max = Collections.max(frameRates); 1612 mParameters.setPreviewFrameRate(max); 1613 } 1614 1615 // Set a preview size that is closest to the viewfinder height. 1616 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1617 Size optimalSize = getOptimalPreviewSize(sizes); 1618 if (optimalSize != null) { 1619 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 1620 } 1621 1622 // Set picture size. 1623 String pictureSize = mPreferences.getString( 1624 CameraSettings.KEY_PICTURE_SIZE, 1625 getString(R.string.pref_camera_picturesize_default)); 1626 setCameraPictureSizeIfSupported(pictureSize); 1627 1628 // Set JPEG quality. 1629 String jpegQuality = mPreferences.getString( 1630 CameraSettings.KEY_JPEG_QUALITY, 1631 getString(R.string.pref_camera_jpegquality_default)); 1632 mParameters.setJpegQuality(Integer.parseInt(jpegQuality)); 1633 1634 // For the following settings, we need to check if the settings are 1635 // still supported by latest driver, if not, ignore the settings. 1636 1637 // Set flash mode. 1638 String flashMode = mPreferences.getString( 1639 CameraSettings.KEY_FLASH_MODE, 1640 getString(R.string.pref_camera_flashmode_default)); 1641 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 1642 if (isSupported(flashMode, supportedFlash)) { 1643 mParameters.setFlashMode(flashMode); 1644 } else { 1645 // If the current flashMode is not support, show the 1646 // FLASH_MODE_OFF icon. 1647 flashMode = Parameters.FLASH_MODE_OFF; 1648 } 1649 1650 // We post the runner because this function can be called from 1651 // non-UI thread (i.e., startPreviewThread). 1652 final String finalFlashMode = flashMode; 1653 mHandler.post(new Runnable() { 1654 public void run() { 1655 mFlashIndicator.setMode(finalFlashMode); 1656 } 1657 }); 1658 1659 // Set white balance parameter. 1660 String whiteBalance = mPreferences.getString( 1661 CameraSettings.KEY_WHITE_BALANCE, 1662 getString(R.string.pref_camera_whitebalance_default)); 1663 if (isSupported(whiteBalance, mParameters.getSupportedWhiteBalance())) { 1664 mParameters.setWhiteBalance(whiteBalance); 1665 } 1666 1667 // Set color effect parameter. 1668 String colorEffect = mPreferences.getString( 1669 CameraSettings.KEY_COLOR_EFFECT, 1670 getString(R.string.pref_camera_coloreffect_default)); 1671 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 1672 mParameters.setColorEffect(colorEffect); 1673 } 1674 1675 // Set scene mode. 1676 String sceneMode = mPreferences.getString( 1677 CameraSettings.KEY_SCENE_MODE, 1678 getString(R.string.pref_camera_scenemode_default)); 1679 if (isSupported(sceneMode, mParameters.getSupportedSceneModes())) { 1680 mParameters.setSceneMode(sceneMode); 1681 } 1682 1683 // Set focus mode. 1684 mFocusMode = mPreferences.getString( 1685 CameraSettings.KEY_FOCUS_MODE, 1686 getString(R.string.pref_camera_focusmode_default)); 1687 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 1688 mParameters.setFocusMode(mFocusMode); 1689 } 1690 1691 mCameraDevice.setParameters(mParameters); 1692 } 1693 1694 private void gotoGallery() { 1695 MenuHelper.gotoCameraImageGallery(this); 1696 } 1697 1698 private void viewLastImage() { 1699 if (mThumbController.isUriValid()) { 1700 Uri targetUri = mThumbController.getUri(); 1701 targetUri = targetUri.buildUpon().appendQueryParameter( 1702 "bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); 1703 Intent intent = new Intent(this, ReviewImage.class); 1704 intent.setData(targetUri); 1705 intent.putExtra(MediaStore.EXTRA_FULL_SCREEN, true); 1706 intent.putExtra(MediaStore.EXTRA_SHOW_ACTION_ICONS, true); 1707 intent.putExtra("com.android.camera.ReviewMode", true); 1708 try { 1709 startActivity(intent); 1710 } catch (ActivityNotFoundException ex) { 1711 Log.e(TAG, "review image fail", ex); 1712 } 1713 } else { 1714 Log.e(TAG, "Can't view last image."); 1715 } 1716 } 1717 1718 private void startReceivingLocationUpdates() { 1719 if (mLocationManager != null) { 1720 try { 1721 mLocationManager.requestLocationUpdates( 1722 LocationManager.NETWORK_PROVIDER, 1723 1000, 1724 0F, 1725 mLocationListeners[1]); 1726 } catch (java.lang.SecurityException ex) { 1727 Log.i(TAG, "fail to request location update, ignore", ex); 1728 } catch (IllegalArgumentException ex) { 1729 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1730 } 1731 try { 1732 mLocationManager.requestLocationUpdates( 1733 LocationManager.GPS_PROVIDER, 1734 1000, 1735 0F, 1736 mLocationListeners[0]); 1737 } catch (java.lang.SecurityException ex) { 1738 Log.i(TAG, "fail to request location update, ignore", ex); 1739 } catch (IllegalArgumentException ex) { 1740 Log.d(TAG, "provider does not exist " + ex.getMessage()); 1741 } 1742 } 1743 } 1744 1745 private void stopReceivingLocationUpdates() { 1746 if (mLocationManager != null) { 1747 for (int i = 0; i < mLocationListeners.length; i++) { 1748 try { 1749 mLocationManager.removeUpdates(mLocationListeners[i]); 1750 } catch (Exception ex) { 1751 Log.i(TAG, "fail to remove location listners, ignore", ex); 1752 } 1753 } 1754 } 1755 } 1756 1757 private Location getCurrentLocation() { 1758 // go in best to worst order 1759 for (int i = 0; i < mLocationListeners.length; i++) { 1760 Location l = mLocationListeners[i].current(); 1761 if (l != null) return l; 1762 } 1763 return null; 1764 } 1765 1766 private boolean isCameraIdle() { 1767 return mStatus == IDLE && mFocusState == FOCUS_NOT_STARTED; 1768 } 1769 1770 private boolean isImageCaptureIntent() { 1771 String action = getIntent().getAction(); 1772 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 1773 } 1774 1775 private void setupCaptureParams() { 1776 Bundle myExtras = getIntent().getExtras(); 1777 if (myExtras != null) { 1778 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 1779 mCropValue = myExtras.getString("crop"); 1780 } 1781 } 1782 1783 private void showPostCaptureAlert() { 1784 if (mIsImageCaptureIntent) { 1785 findViewById(R.id.shutter_button).setVisibility(View.INVISIBLE); 1786 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1787 for (int id : pickIds) { 1788 View button = findViewById(id); 1789 ((View) button.getParent()).setVisibility(View.VISIBLE); 1790 } 1791 } 1792 } 1793 1794 private void hidePostCaptureAlert() { 1795 if (mIsImageCaptureIntent) { 1796 findViewById(R.id.shutter_button).setVisibility(View.VISIBLE); 1797 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 1798 for (int id : pickIds) { 1799 View button = findViewById(id); 1800 ((View) button.getParent()).setVisibility(View.GONE); 1801 } 1802 } 1803 } 1804 1805 private int calculatePicturesRemaining() { 1806 mPicturesRemaining = MenuHelper.calculatePicturesRemaining(); 1807 return mPicturesRemaining; 1808 } 1809 1810 @Override 1811 public boolean onPrepareOptionsMenu(Menu menu) { 1812 super.onPrepareOptionsMenu(menu); 1813 // Only show the menu when camera is idle. 1814 for (int i = 0; i < menu.size(); i++) { 1815 menu.getItem(i).setVisible(isCameraIdle()); 1816 } 1817 1818 return true; 1819 } 1820 1821 @Override 1822 public boolean onCreateOptionsMenu(Menu menu) { 1823 super.onCreateOptionsMenu(menu); 1824 1825 if (mIsImageCaptureIntent) { 1826 // No options menu for attach mode. 1827 return false; 1828 } else { 1829 addBaseMenuItems(menu); 1830 } 1831 return true; 1832 } 1833 1834 private void addBaseMenuItems(Menu menu) { 1835 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 1836 MenuHelper.POSITION_GOTO_GALLERY, 1837 R.string.camera_gallery_photos_text) 1838 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1839 public boolean onMenuItemClick(MenuItem item) { 1840 gotoGallery(); 1841 return true; 1842 } 1843 }); 1844 gallery.setIcon(android.R.drawable.ic_menu_gallery); 1845 mGalleryItems.add(gallery); 1846 1847 MenuItem item = menu.add(Menu.NONE, Menu.NONE, 1848 MenuHelper.POSITION_CAMERA_SETTING, R.string.settings) 1849 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 1850 public boolean onMenuItemClick(MenuItem item) { 1851 showOnScreenSettings(); 1852 return true; 1853 } 1854 }); 1855 item.setIcon(android.R.drawable.ic_menu_preferences); 1856 } 1857 1858 public boolean onSwitchChanged(Switcher source, boolean onOff) { 1859 if (onOff == SWITCH_VIDEO) { 1860 if (!isCameraIdle()) return false; 1861 MenuHelper.gotoVideoMode(this); 1862 finish(); 1863 } 1864 return true; 1865 } 1866 1867 private void setCameraPictureSizeIfSupported(String sizeString) { 1868 List<Size> pictureSizes = mParameters.getSupportedPictureSizes(); 1869 if (pictureSizes != null) { 1870 int index = sizeString.indexOf('x'); 1871 int width = Integer.parseInt(sizeString.substring(0, index)); 1872 int height = Integer.parseInt(sizeString.substring(index + 1)); 1873 for (Size size: pictureSizes) { 1874 if (size.width == width && size.height == height) { 1875 mParameters.setPictureSize(width, height); 1876 break; 1877 } 1878 } 1879 } 1880 } 1881 1882 public void onSharedPreferenceChanged( 1883 SharedPreferences preferences, String key) { 1884 // ignore the events after "onPause()" 1885 if (mPausing) return; 1886 1887 if (CameraSettings.KEY_RECORD_LOCATION.equals(key)) { 1888 mRecordLocation = preferences.getBoolean(key, false); 1889 if (mRecordLocation) { 1890 startReceivingLocationUpdates(); 1891 } else { 1892 stopReceivingLocationUpdates(); 1893 } 1894 } else { 1895 // All preferences except RECORD_LOCATION are camera parameters. 1896 // Call setCameraParameters to take effect now. 1897 setCameraParameters(); 1898 } 1899 } 1900 1901 @Override 1902 public void onUserInteraction() { 1903 super.onUserInteraction(); 1904 keepScreenOnAwhile(); 1905 } 1906 1907 private void resetScreenOn() { 1908 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1909 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1910 } 1911 1912 private void keepScreenOnAwhile() { 1913 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 1914 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1915 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 1916 } 1917} 1918 1919class FocusRectangle extends View { 1920 1921 @SuppressWarnings("unused") 1922 private static final String TAG = "FocusRectangle"; 1923 1924 public FocusRectangle(Context context, AttributeSet attrs) { 1925 super(context, attrs); 1926 } 1927 1928 private void setDrawable(int resid) { 1929 setBackgroundDrawable(getResources().getDrawable(resid)); 1930 } 1931 1932 public void showStart() { 1933 setDrawable(R.drawable.focus_focusing); 1934 } 1935 1936 public void showSuccess() { 1937 setDrawable(R.drawable.focus_focused); 1938 } 1939 1940 public void showFail() { 1941 setDrawable(R.drawable.focus_focus_failed); 1942 } 1943 1944 public void clear() { 1945 setBackgroundDrawable(null); 1946 } 1947} 1948