Util.java revision 38e7f88993ece55252165940c471a031f87df55a
1/* 2 * Copyright (C) 2009 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.app.AlertDialog; 21import android.app.admin.DevicePolicyManager; 22import android.content.ActivityNotFoundException; 23import android.content.ContentResolver; 24import android.content.Context; 25import android.content.DialogInterface; 26import android.content.Intent; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.Matrix; 30import android.graphics.Rect; 31import android.graphics.RectF; 32import android.hardware.Camera; 33import android.hardware.Camera.CameraInfo; 34import android.hardware.Camera.Parameters; 35import android.hardware.Camera.Size; 36import android.location.Location; 37import android.net.Uri; 38import android.os.Build; 39import android.os.ParcelFileDescriptor; 40import android.provider.Settings; 41import android.telephony.TelephonyManager; 42import android.util.DisplayMetrics; 43import android.util.Log; 44import android.view.Display; 45import android.view.OrientationEventListener; 46import android.view.Surface; 47import android.view.View; 48import android.view.Window; 49import android.view.WindowManager; 50import android.view.animation.AlphaAnimation; 51import android.view.animation.Animation; 52 53import java.io.Closeable; 54import java.io.IOException; 55import java.lang.reflect.Method; 56import java.text.SimpleDateFormat; 57import java.util.Date; 58import java.util.List; 59import java.util.StringTokenizer; 60 61/** 62 * Collection of utility functions used in this package. 63 */ 64public class Util { 65 private static final String TAG = "Util"; 66 private static final int DIRECTION_LEFT = 0; 67 private static final int DIRECTION_RIGHT = 1; 68 private static final int DIRECTION_UP = 2; 69 private static final int DIRECTION_DOWN = 3; 70 71 // Orientation hysteresis amount used in rounding, in degrees 72 public static final int ORIENTATION_HYSTERESIS = 5; 73 74 public static final String REVIEW_ACTION = "com.android.camera.action.REVIEW"; 75 76 // Private intent extras. Test only. 77 private static final String EXTRAS_CAMERA_FACING = 78 "android.intent.extras.CAMERA_FACING"; 79 80 private static boolean sIsTabletUI; 81 private static float sPixelDensity = 1; 82 private static ImageFileNamer sImageFileNamer; 83 84 private Util() { 85 } 86 87 public static void initialize(Context context) { 88 sIsTabletUI = (context.getResources().getConfiguration().smallestScreenWidthDp >= 600); 89 90 DisplayMetrics metrics = new DisplayMetrics(); 91 WindowManager wm = (WindowManager) 92 context.getSystemService(Context.WINDOW_SERVICE); 93 wm.getDefaultDisplay().getMetrics(metrics); 94 sPixelDensity = metrics.density; 95 sImageFileNamer = new ImageFileNamer( 96 context.getString(R.string.image_file_name_format)); 97 } 98 99 public static boolean isTabletUI() { 100 return sIsTabletUI; 101 } 102 103 public static int dpToPixel(int dp) { 104 return Math.round(sPixelDensity * dp); 105 } 106 107 // Rotates the bitmap by the specified degree. 108 // If a new bitmap is created, the original bitmap is recycled. 109 public static Bitmap rotate(Bitmap b, int degrees) { 110 return rotateAndMirror(b, degrees, false); 111 } 112 113 // Rotates and/or mirrors the bitmap. If a new bitmap is created, the 114 // original bitmap is recycled. 115 public static Bitmap rotateAndMirror(Bitmap b, int degrees, boolean mirror) { 116 if ((degrees != 0 || mirror) && b != null) { 117 Matrix m = new Matrix(); 118 // Mirror first. 119 // horizontal flip + rotation = -rotation + horizontal flip 120 if (mirror) { 121 m.postScale(-1, 1); 122 degrees = (degrees + 360) % 360; 123 if (degrees == 0 || degrees == 180) { 124 m.postTranslate((float) b.getWidth(), 0); 125 } else if (degrees == 90 || degrees == 270) { 126 m.postTranslate((float) b.getHeight(), 0); 127 } else { 128 throw new IllegalArgumentException("Invalid degrees=" + degrees); 129 } 130 } 131 if (degrees != 0) { 132 // clockwise 133 m.postRotate(degrees, 134 (float) b.getWidth() / 2, (float) b.getHeight() / 2); 135 } 136 137 try { 138 Bitmap b2 = Bitmap.createBitmap( 139 b, 0, 0, b.getWidth(), b.getHeight(), m, true); 140 if (b != b2) { 141 b.recycle(); 142 b = b2; 143 } 144 } catch (OutOfMemoryError ex) { 145 // We have no memory to rotate. Return the original bitmap. 146 } 147 } 148 return b; 149 } 150 151 /* 152 * Compute the sample size as a function of minSideLength 153 * and maxNumOfPixels. 154 * minSideLength is used to specify that minimal width or height of a 155 * bitmap. 156 * maxNumOfPixels is used to specify the maximal size in pixels that is 157 * tolerable in terms of memory usage. 158 * 159 * The function returns a sample size based on the constraints. 160 * Both size and minSideLength can be passed in as -1 161 * which indicates no care of the corresponding constraint. 162 * The functions prefers returning a sample size that 163 * generates a smaller bitmap, unless minSideLength = -1. 164 * 165 * Also, the function rounds up the sample size to a power of 2 or multiple 166 * of 8 because BitmapFactory only honors sample size this way. 167 * For example, BitmapFactory downsamples an image by 2 even though the 168 * request is 3. So we round up the sample size to avoid OOM. 169 */ 170 public static int computeSampleSize(BitmapFactory.Options options, 171 int minSideLength, int maxNumOfPixels) { 172 int initialSize = computeInitialSampleSize(options, minSideLength, 173 maxNumOfPixels); 174 175 int roundedSize; 176 if (initialSize <= 8) { 177 roundedSize = 1; 178 while (roundedSize < initialSize) { 179 roundedSize <<= 1; 180 } 181 } else { 182 roundedSize = (initialSize + 7) / 8 * 8; 183 } 184 185 return roundedSize; 186 } 187 188 private static int computeInitialSampleSize(BitmapFactory.Options options, 189 int minSideLength, int maxNumOfPixels) { 190 double w = options.outWidth; 191 double h = options.outHeight; 192 193 int lowerBound = (maxNumOfPixels < 0) ? 1 : 194 (int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels)); 195 int upperBound = (minSideLength < 0) ? 128 : 196 (int) Math.min(Math.floor(w / minSideLength), 197 Math.floor(h / minSideLength)); 198 199 if (upperBound < lowerBound) { 200 // return the larger one when there is no overlapping zone. 201 return lowerBound; 202 } 203 204 if (maxNumOfPixels < 0 && minSideLength < 0) { 205 return 1; 206 } else if (minSideLength < 0) { 207 return lowerBound; 208 } else { 209 return upperBound; 210 } 211 } 212 213 public static Bitmap makeBitmap(byte[] jpegData, int maxNumOfPixels) { 214 try { 215 BitmapFactory.Options options = new BitmapFactory.Options(); 216 options.inJustDecodeBounds = true; 217 BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, 218 options); 219 if (options.mCancel || options.outWidth == -1 220 || options.outHeight == -1) { 221 return null; 222 } 223 options.inSampleSize = computeSampleSize( 224 options, -1, maxNumOfPixels); 225 options.inJustDecodeBounds = false; 226 227 options.inDither = false; 228 options.inPreferredConfig = Bitmap.Config.ARGB_8888; 229 return BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, 230 options); 231 } catch (OutOfMemoryError ex) { 232 Log.e(TAG, "Got oom exception ", ex); 233 return null; 234 } 235 } 236 237 public static void closeSilently(Closeable c) { 238 if (c == null) return; 239 try { 240 c.close(); 241 } catch (Throwable t) { 242 // do nothing 243 } 244 } 245 246 public static void Assert(boolean cond) { 247 if (!cond) { 248 throw new AssertionError(); 249 } 250 } 251 252 public static android.hardware.Camera openCamera(Activity activity, int cameraId) 253 throws CameraHardwareException, CameraDisabledException { 254 // Check if device policy has disabled the camera. 255 DevicePolicyManager dpm = (DevicePolicyManager) activity.getSystemService( 256 Context.DEVICE_POLICY_SERVICE); 257 if (dpm.getCameraDisabled(null)) { 258 throw new CameraDisabledException(); 259 } 260 261 try { 262 return CameraHolder.instance().open(cameraId); 263 } catch (CameraHardwareException e) { 264 // In eng build, we throw the exception so that test tool 265 // can detect it and report it 266 if ("eng".equals(Build.TYPE)) { 267 throw new RuntimeException("openCamera failed", e); 268 } else { 269 throw e; 270 } 271 } 272 } 273 274 public static void showErrorAndFinish(final Activity activity, int msgId) { 275 DialogInterface.OnClickListener buttonListener = 276 new DialogInterface.OnClickListener() { 277 public void onClick(DialogInterface dialog, int which) { 278 activity.finish(); 279 } 280 }; 281 new AlertDialog.Builder(activity) 282 .setCancelable(false) 283 .setIconAttribute(android.R.attr.alertDialogIcon) 284 .setTitle(R.string.camera_error_title) 285 .setMessage(msgId) 286 .setNeutralButton(R.string.dialog_ok, buttonListener) 287 .show(); 288 } 289 290 public static <T> T checkNotNull(T object) { 291 if (object == null) throw new NullPointerException(); 292 return object; 293 } 294 295 public static boolean equals(Object a, Object b) { 296 return (a == b) || (a == null ? false : a.equals(b)); 297 } 298 299 public static int nextPowerOf2(int n) { 300 n -= 1; 301 n |= n >>> 16; 302 n |= n >>> 8; 303 n |= n >>> 4; 304 n |= n >>> 2; 305 n |= n >>> 1; 306 return n + 1; 307 } 308 309 public static float distance(float x, float y, float sx, float sy) { 310 float dx = x - sx; 311 float dy = y - sy; 312 return (float) Math.sqrt(dx * dx + dy * dy); 313 } 314 315 public static int clamp(int x, int min, int max) { 316 if (x > max) return max; 317 if (x < min) return min; 318 return x; 319 } 320 321 public static int getDisplayRotation(Activity activity) { 322 int rotation = activity.getWindowManager().getDefaultDisplay() 323 .getRotation(); 324 switch (rotation) { 325 case Surface.ROTATION_0: return 0; 326 case Surface.ROTATION_90: return 90; 327 case Surface.ROTATION_180: return 180; 328 case Surface.ROTATION_270: return 270; 329 } 330 return 0; 331 } 332 333 public static int getDisplayOrientation(int degrees, int cameraId) { 334 // See android.hardware.Camera.setDisplayOrientation for 335 // documentation. 336 Camera.CameraInfo info = new Camera.CameraInfo(); 337 Camera.getCameraInfo(cameraId, info); 338 int result; 339 if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 340 result = (info.orientation + degrees) % 360; 341 result = (360 - result) % 360; // compensate the mirror 342 } else { // back-facing 343 result = (info.orientation - degrees + 360) % 360; 344 } 345 return result; 346 } 347 348 public static int getCameraOrientation(int cameraId) { 349 Camera.CameraInfo info = new Camera.CameraInfo(); 350 Camera.getCameraInfo(cameraId, info); 351 return info.orientation; 352 } 353 354 public static int roundOrientation(int orientation, int orientationHistory) { 355 boolean changeOrientation = false; 356 if (orientationHistory == OrientationEventListener.ORIENTATION_UNKNOWN) { 357 changeOrientation = true; 358 } else { 359 int dist = Math.abs(orientation - orientationHistory); 360 dist = Math.min( dist, 360 - dist ); 361 changeOrientation = ( dist >= 45 + ORIENTATION_HYSTERESIS ); 362 } 363 if (changeOrientation) { 364 return ((orientation + 45) / 90 * 90) % 360; 365 } 366 return orientationHistory; 367 } 368 369 public static Size getOptimalPreviewSize(Activity currentActivity, 370 List<Size> sizes, double targetRatio) { 371 // Use a very small tolerance because we want an exact match. 372 final double ASPECT_TOLERANCE = 0.001; 373 if (sizes == null) return null; 374 375 Size optimalSize = null; 376 double minDiff = Double.MAX_VALUE; 377 378 // Because of bugs of overlay and layout, we sometimes will try to 379 // layout the viewfinder in the portrait orientation and thus get the 380 // wrong size of mSurfaceView. When we change the preview size, the 381 // new overlay will be created before the old one closed, which causes 382 // an exception. For now, just get the screen size 383 384 Display display = currentActivity.getWindowManager().getDefaultDisplay(); 385 int targetHeight = Math.min(display.getHeight(), display.getWidth()); 386 387 if (targetHeight <= 0) { 388 // We don't know the size of SurfaceView, use screen height 389 targetHeight = display.getHeight(); 390 } 391 392 // Try to find an size match aspect ratio and size 393 for (Size size : sizes) { 394 double ratio = (double) size.width / size.height; 395 if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 396 if (Math.abs(size.height - targetHeight) < minDiff) { 397 optimalSize = size; 398 minDiff = Math.abs(size.height - targetHeight); 399 } 400 } 401 402 // Cannot find the one match the aspect ratio. This should not happen. 403 // Ignore the requirement. 404 if (optimalSize == null) { 405 Log.w(TAG, "No preview size match the aspect ratio"); 406 minDiff = Double.MAX_VALUE; 407 for (Size size : sizes) { 408 if (Math.abs(size.height - targetHeight) < minDiff) { 409 optimalSize = size; 410 minDiff = Math.abs(size.height - targetHeight); 411 } 412 } 413 } 414 return optimalSize; 415 } 416 417 // Returns the largest picture size which matches the given aspect ratio. 418 public static Size getOptimalVideoSnapshotPictureSize( 419 List<Size> sizes, double targetRatio) { 420 // Use a very small tolerance because we want an exact match. 421 final double ASPECT_TOLERANCE = 0.001; 422 if (sizes == null) return null; 423 424 Size optimalSize = null; 425 426 // Try to find a size matches aspect ratio and has the largest width 427 for (Size size : sizes) { 428 double ratio = (double) size.width / size.height; 429 if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 430 if (optimalSize == null || size.width > optimalSize.width) { 431 optimalSize = size; 432 } 433 } 434 435 // Cannot find one that matches the aspect ratio. This should not happen. 436 // Ignore the requirement. 437 if (optimalSize == null) { 438 Log.w(TAG, "No picture size match the aspect ratio"); 439 for (Size size : sizes) { 440 if (optimalSize == null || size.width > optimalSize.width) { 441 optimalSize = size; 442 } 443 } 444 } 445 return optimalSize; 446 } 447 448 public static void dumpParameters(Parameters parameters) { 449 String flattened = parameters.flatten(); 450 StringTokenizer tokenizer = new StringTokenizer(flattened, ";"); 451 Log.d(TAG, "Dump all camera parameters:"); 452 while (tokenizer.hasMoreElements()) { 453 Log.d(TAG, tokenizer.nextToken()); 454 } 455 } 456 457 /** 458 * Returns whether the device is voice-capable (meaning, it can do MMS). 459 */ 460 public static boolean isMmsCapable(Context context) { 461 TelephonyManager telephonyManager = (TelephonyManager) 462 context.getSystemService(Context.TELEPHONY_SERVICE); 463 if (telephonyManager == null) { 464 return false; 465 } 466 467 try { 468 Class partypes[] = new Class[0]; 469 Method sIsVoiceCapable = TelephonyManager.class.getMethod( 470 "isVoiceCapable", partypes); 471 472 Object arglist[] = new Object[0]; 473 Object retobj = sIsVoiceCapable.invoke(telephonyManager, arglist); 474 return (Boolean) retobj; 475 } catch (java.lang.reflect.InvocationTargetException ite) { 476 // Failure, must be another device. 477 // Assume that it is voice capable. 478 } catch (IllegalAccessException iae) { 479 // Failure, must be an other device. 480 // Assume that it is voice capable. 481 } catch (NoSuchMethodException nsme) { 482 } 483 return true; 484 } 485 486 // This is for test only. Allow the camera to launch the specific camera. 487 public static int getCameraFacingIntentExtras(Activity currentActivity) { 488 int cameraId = -1; 489 490 int intentCameraId = 491 currentActivity.getIntent().getIntExtra(Util.EXTRAS_CAMERA_FACING, -1); 492 493 if (isFrontCameraIntent(intentCameraId)) { 494 // Check if the front camera exist 495 int frontCameraId = CameraHolder.instance().getFrontCameraId(); 496 if (frontCameraId != -1) { 497 cameraId = frontCameraId; 498 } 499 } else if (isBackCameraIntent(intentCameraId)) { 500 // Check if the back camera exist 501 int backCameraId = CameraHolder.instance().getBackCameraId(); 502 if (backCameraId != -1) { 503 cameraId = backCameraId; 504 } 505 } 506 return cameraId; 507 } 508 509 private static boolean isFrontCameraIntent(int intentCameraId) { 510 return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT); 511 } 512 513 private static boolean isBackCameraIntent(int intentCameraId) { 514 return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK); 515 } 516 517 private static int mLocation[] = new int[2]; 518 519 // This method is not thread-safe. 520 public static boolean pointInView(float x, float y, View v) { 521 v.getLocationInWindow(mLocation); 522 return x >= mLocation[0] && x < (mLocation[0] + v.getWidth()) 523 && y >= mLocation[1] && y < (mLocation[1] + v.getHeight()); 524 } 525 526 public static boolean isUriValid(Uri uri, ContentResolver resolver) { 527 if (uri == null) return false; 528 529 try { 530 ParcelFileDescriptor pfd = resolver.openFileDescriptor(uri, "r"); 531 if (pfd == null) { 532 Log.e(TAG, "Fail to open URI. URI=" + uri); 533 return false; 534 } 535 pfd.close(); 536 } catch (IOException ex) { 537 return false; 538 } 539 return true; 540 } 541 542 public static void viewUri(Uri uri, Context context) { 543 if (!isUriValid(uri, context.getContentResolver())) { 544 Log.e(TAG, "Uri invalid. uri=" + uri); 545 return; 546 } 547 548 try { 549 context.startActivity(new Intent(Util.REVIEW_ACTION, uri)); 550 } catch (ActivityNotFoundException ex) { 551 try { 552 context.startActivity(new Intent(Intent.ACTION_VIEW, uri)); 553 } catch (ActivityNotFoundException e) { 554 Log.e(TAG, "review image fail. uri=" + uri, e); 555 } 556 } 557 } 558 559 public static void dumpRect(RectF rect, String msg) { 560 Log.v(TAG, msg + "=(" + rect.left + "," + rect.top 561 + "," + rect.right + "," + rect.bottom + ")"); 562 } 563 564 public static void rectFToRect(RectF rectF, Rect rect) { 565 rect.left = Math.round(rectF.left); 566 rect.top = Math.round(rectF.top); 567 rect.right = Math.round(rectF.right); 568 rect.bottom = Math.round(rectF.bottom); 569 } 570 571 public static void prepareMatrix(Matrix matrix, boolean mirror, int displayOrientation, 572 int viewWidth, int viewHeight) { 573 // Need mirror for front camera. 574 matrix.setScale(mirror ? -1 : 1, 1); 575 // This is the value for android.hardware.Camera.setDisplayOrientation. 576 matrix.postRotate(displayOrientation); 577 // Camera driver coordinates range from (-1000, -1000) to (1000, 1000). 578 // UI coordinates range from (0, 0) to (width, height). 579 matrix.postScale(viewWidth / 2000f, viewHeight / 2000f); 580 matrix.postTranslate(viewWidth / 2f, viewHeight / 2f); 581 } 582 583 public static String createJpegName(long dateTaken) { 584 synchronized (sImageFileNamer) { 585 return sImageFileNamer.generateName(dateTaken); 586 } 587 } 588 589 public static void broadcastNewPicture(Context context, Uri uri) { 590 context.sendBroadcast(new Intent(android.hardware.Camera.ACTION_NEW_PICTURE, uri)); 591 // Keep compatibility 592 context.sendBroadcast(new Intent("com.android.camera.NEW_PICTURE", uri)); 593 } 594 595 public static void fadeIn(View view) { 596 if (view.getVisibility() == View.VISIBLE) return; 597 598 view.setVisibility(View.VISIBLE); 599 Animation animation = new AlphaAnimation(0F, 1F); 600 animation.setDuration(400); 601 view.startAnimation(animation); 602 } 603 604 public static void fadeOut(View view) { 605 if (view.getVisibility() != View.VISIBLE) return; 606 607 Animation animation = new AlphaAnimation(1F, 0F); 608 animation.setDuration(400); 609 view.startAnimation(animation); 610 view.setVisibility(View.GONE); 611 } 612 613 public static void setRotationParameter(Parameters parameters, int cameraId, int orientation) { 614 // See android.hardware.Camera.Parameters.setRotation for 615 // documentation. 616 int rotation = 0; 617 if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 618 CameraInfo info = CameraHolder.instance().getCameraInfo()[cameraId]; 619 if (info.facing == CameraInfo.CAMERA_FACING_FRONT) { 620 rotation = (info.orientation - orientation + 360) % 360; 621 } else { // back-facing camera 622 rotation = (info.orientation + orientation) % 360; 623 } 624 } 625 parameters.setRotation(rotation); 626 } 627 628 public static void setGpsParameters(Parameters parameters, Location loc) { 629 // Clear previous GPS location from the parameters. 630 parameters.removeGpsData(); 631 632 // We always encode GpsTimeStamp 633 parameters.setGpsTimestamp(System.currentTimeMillis() / 1000); 634 635 // Set GPS location. 636 if (loc != null) { 637 double lat = loc.getLatitude(); 638 double lon = loc.getLongitude(); 639 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 640 641 if (hasLatLon) { 642 Log.d(TAG, "Set gps location"); 643 parameters.setGpsLatitude(lat); 644 parameters.setGpsLongitude(lon); 645 parameters.setGpsProcessingMethod(loc.getProvider().toUpperCase()); 646 if (loc.hasAltitude()) { 647 parameters.setGpsAltitude(loc.getAltitude()); 648 } else { 649 // for NETWORK_PROVIDER location provider, we may have 650 // no altitude information, but the driver needs it, so 651 // we fake one. 652 parameters.setGpsAltitude(0); 653 } 654 if (loc.getTime() != 0) { 655 // Location.getTime() is UTC in milliseconds. 656 // gps-timestamp is UTC in seconds. 657 long utcTimeSeconds = loc.getTime() / 1000; 658 parameters.setGpsTimestamp(utcTimeSeconds); 659 } 660 } else { 661 loc = null; 662 } 663 } 664 } 665 666 public static void enterLightsOutMode(Window window) { 667 WindowManager.LayoutParams params = window.getAttributes(); 668 params.systemUiVisibility = View.SYSTEM_UI_FLAG_LOW_PROFILE; 669 window.setAttributes(params); 670 } 671 672 private static class ImageFileNamer { 673 private SimpleDateFormat mFormat; 674 675 // The date (in milliseconds) used to generate the last name. 676 private long mLastDate; 677 678 // Number of names generated for the same second. 679 private int mSameSecondCount; 680 681 public ImageFileNamer(String format) { 682 mFormat = new SimpleDateFormat(format); 683 } 684 685 public String generateName(long dateTaken) { 686 Date date = new Date(dateTaken); 687 String result = mFormat.format(date); 688 689 // If the last name was generated for the same second, 690 // we append _1, _2, etc to the name. 691 if (dateTaken / 1000 == mLastDate / 1000) { 692 mSameSecondCount++; 693 result += "_" + mSameSecondCount; 694 } else { 695 mLastDate = dateTaken; 696 mSameSecondCount = 0; 697 } 698 699 return result; 700 } 701 } 702} 703