src/com/android/camera/CameraSettings.java

   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
  17 package com.android.camera;
  18
  19 import android.annotation.TargetApi;
  20 import android.app.Activity;
  21 import android.content.Context;
  22 import android.content.SharedPreferences;
  23 import android.content.SharedPreferences.Editor;
  24 import android.content.res.Resources;
  25 import android.content.res.TypedArray;
  26 import android.hardware.Camera.CameraInfo;
  27 import android.hardware.Camera.Parameters;
  28 import android.hardware.Camera.Size;
  29 import android.media.CamcorderProfile;
  30 import android.util.FloatMath;
  31 import android.util.Log;
  32
  33 import com.android.gallery3d.R;
  34 import com.android.gallery3d.common.ApiHelper;
  35
  36 import java.util.ArrayList;
  37 import java.util.List;
  38 import java.util.Locale;
  39
  40 /**
  41  *  Provides utilities and keys for Camera settings.
  42  */
  43 public class CameraSettings {
  44     private static final int NOT_FOUND = -1;
  45
  46     public static final String KEY_VERSION = "pref_version_key";
  47     public static final String KEY_LOCAL_VERSION = "pref_local_version_key";
  48     public static final String KEY_RECORD_LOCATION = "pref_camera_recordlocation_key";
  49     public static final String KEY_VIDEO_QUALITY = "pref_video_quality_key";
  50     public static final String KEY_VIDEO_TIME_LAPSE_FRAME_INTERVAL = "pref_video_time_lapse_frame_interval_key";
  51     public static final String KEY_PICTURE_SIZE = "pref_camera_picturesize_key";
  52     public static final String KEY_JPEG_QUALITY = "pref_camera_jpegquality_key";
  53     public static final String KEY_FOCUS_MODE = "pref_camera_focusmode_key";
  54     public static final String KEY_FLASH_MODE = "pref_camera_flashmode_key";
  55     public static final String KEY_VIDEOCAMERA_FLASH_MODE = "pref_camera_video_flashmode_key";
  56     public static final String KEY_WHITE_BALANCE = "pref_camera_whitebalance_key";
  57     public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key";
  58     public static final String KEY_EXPOSURE = "pref_camera_exposure_key";
  59     public static final String KEY_TIMER = "pref_camera_timer_key";
  60     public static final String KEY_TIMER_SOUND_EFFECTS = "pref_camera_timer_sound_key";
  61     public static final String KEY_VIDEO_EFFECT = "pref_video_effect_key";
  62     public static final String KEY_CAMERA_ID = "pref_camera_id_key";
  63     public static final String KEY_CAMERA_HDR = "pref_camera_hdr_key";
  64     public static final String KEY_CAMERA_FIRST_USE_HINT_SHOWN = "pref_camera_first_use_hint_shown_key";
  65     public static final String KEY_VIDEO_FIRST_USE_HINT_SHOWN = "pref_video_first_use_hint_shown_key";
  66     public static final String KEY_PHOTOSPHERE_PICTURESIZE = "pref_photosphere_picturesize_key";
  67
  68     public static final String EXPOSURE_DEFAULT_VALUE = "0";
  69
  70     public static final int CURRENT_VERSION = 5;
  71     public static final int CURRENT_LOCAL_VERSION = 2;
  72
  73     private static final String TAG = "CameraSettings";
  74
  75     private final Context mContext;
  76     private final Parameters mParameters;
  77     private final CameraInfo[] mCameraInfo;
  78     private final int mCameraId;
  79
  80     public CameraSettings(Activity activity, Parameters parameters,
  81                           int cameraId, CameraInfo[] cameraInfo) {
  82         mContext = activity;
  83         mParameters = parameters;
  84         mCameraId = cameraId;
  85         mCameraInfo = cameraInfo;
  86     }
  87
  88     public PreferenceGroup getPreferenceGroup(int preferenceRes) {
  89         PreferenceInflater inflater = new PreferenceInflater(mContext);
  90         PreferenceGroup group =
  91                 (PreferenceGroup) inflater.inflate(preferenceRes);
  92         if (mParameters != null) initPreference(group);
  93         return group;
  94     }
  95
  96     @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
  97     public static String getDefaultVideoQuality(int cameraId,
  98             String defaultQuality) {
  99         if (ApiHelper.HAS_FINE_RESOLUTION_QUALITY_LEVELS) {
 100             if (CamcorderProfile.hasProfile(
 101                     cameraId, Integer.valueOf(defaultQuality))) {
 102                 return defaultQuality;
 103             }
 104         }
 105         return Integer.toString(CamcorderProfile.QUALITY_HIGH);
 106     }
 107
 108     public static void initialCameraPictureSize(
 109             Context context, Parameters parameters) {
 110         // When launching the camera app first time, we will set the picture
 111         // size to the first one in the list defined in "arrays.xml" and is also
 112         // supported by the driver.
 113         List<Size> supported = parameters.getSupportedPictureSizes();
 114         if (supported == null) return;
 115         for (String candidate : context.getResources().getStringArray(
 116                 R.array.pref_camera_picturesize_entryvalues)) {
 117             if (setCameraPictureSize(candidate, supported, parameters)) {
 118                 SharedPreferences.Editor editor = ComboPreferences
 119                         .get(context).edit();
 120                 editor.putString(KEY_PICTURE_SIZE, candidate);
 121                 editor.apply();
 122                 return;
 123             }
 124         }
 125         Log.e(TAG, "No supported picture size found");
 126     }
 127
 128     public static void removePreferenceFromScreen(
 129             PreferenceGroup group, String key) {
 130         removePreference(group, key);
 131     }
 132
 133     public static boolean setCameraPictureSize(
 134             String candidate, List<Size> supported, Parameters parameters) {
 135         int index = candidate.indexOf('x');
 136         if (index == NOT_FOUND) return false;
 137         int width = Integer.parseInt(candidate.substring(0, index));
 138         int height = Integer.parseInt(candidate.substring(index + 1));
 139         for (Size size : supported) {
 140             if (size.width == width && size.height == height) {
 141                 parameters.setPictureSize(width, height);
 142                 return true;
 143             }
 144         }
 145         return false;
 146     }
 147
 148     public static int getMaxVideoDuration(Context context) {
 149         int duration = 0;  // in milliseconds, 0 means unlimited.
 150         try {
 151             duration = context.getResources().getInteger(R.integer.max_video_recording_length);
 152         } catch (Resources.NotFoundException ex) {
 153         }
 154         return duration;
 155     }
 156
 157     private void initPreference(PreferenceGroup group) {
 158         ListPreference videoQuality = group.findPreference(KEY_VIDEO_QUALITY);
 159         ListPreference timeLapseInterval = group.findPreference(KEY_VIDEO_TIME_LAPSE_FRAME_INTERVAL);
 160         ListPreference pictureSize = group.findPreference(KEY_PICTURE_SIZE);
 161         ListPreference whiteBalance =  group.findPreference(KEY_WHITE_BALANCE);
 162         ListPreference sceneMode = group.findPreference(KEY_SCENE_MODE);
 163         ListPreference flashMode = group.findPreference(KEY_FLASH_MODE);
 164         ListPreference focusMode = group.findPreference(KEY_FOCUS_MODE);
 165         IconListPreference exposure =
 166                 (IconListPreference) group.findPreference(KEY_EXPOSURE);
 167         CountDownTimerPreference timer =
 168                 (CountDownTimerPreference) group.findPreference(KEY_TIMER);
 169         ListPreference countDownSoundEffects = group.findPreference(KEY_TIMER_SOUND_EFFECTS);
 170         IconListPreference cameraIdPref =
 171                 (IconListPreference) group.findPreference(KEY_CAMERA_ID);
 172         ListPreference videoFlashMode =
 173                 group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE);
 174         ListPreference videoEffect = group.findPreference(KEY_VIDEO_EFFECT);
 175         ListPreference cameraHdr = group.findPreference(KEY_CAMERA_HDR);
 176
 177         // Since the screen could be loaded from different resources, we need
 178         // to check if the preference is available here
 179         if (videoQuality != null) {
 180             filterUnsupportedOptions(group, videoQuality, getSupportedVideoQuality());
 181         }
 182
 183         if (pictureSize != null) {
 184             filterUnsupportedOptions(group, pictureSize, sizeListToStringList(
 185                     mParameters.getSupportedPictureSizes()));
 186             filterSimilarPictureSize(group, pictureSize);
 187         }
 188         if (whiteBalance != null) {
 189             filterUnsupportedOptions(group,
 190                     whiteBalance, mParameters.getSupportedWhiteBalance());
 191         }
 192         if (sceneMode != null) {
 193             filterUnsupportedOptions(group,
 194                     sceneMode, mParameters.getSupportedSceneModes());
 195         }
 196         if (flashMode != null) {
 197             filterUnsupportedOptions(group,
 198                     flashMode, mParameters.getSupportedFlashModes());
 199         }
 200         if (focusMode != null) {
 201             if (!Util.isFocusAreaSupported(mParameters)) {
 202                 filterUnsupportedOptions(group,
 203                         focusMode, mParameters.getSupportedFocusModes());
 204             } else {
 205                 // Remove the focus mode if we can use tap-to-focus.
 206                 removePreference(group, focusMode.getKey());
 207             }
 208         }
 209         if (videoFlashMode != null) {
 210             filterUnsupportedOptions(group,
 211                     videoFlashMode, mParameters.getSupportedFlashModes());
 212         }
 213         if (exposure != null) buildExposureCompensation(group, exposure);
 214         if (cameraIdPref != null) buildCameraId(group, cameraIdPref);
 215
 216         if (timeLapseInterval != null) {
 217             if (ApiHelper.HAS_TIME_LAPSE_RECORDING) {
 218                 resetIfInvalid(timeLapseInterval);
 219             } else {
 220                 removePreference(group, timeLapseInterval.getKey());
 221             }
 222         }
 223         if (videoEffect != null) {
 224             if (ApiHelper.HAS_EFFECTS_RECORDING) {
 225                 initVideoEffect(group, videoEffect);
 226                 resetIfInvalid(videoEffect);
 227             } else {
 228                 filterUnsupportedOptions(group, videoEffect, null);
 229             }
 230         }
 231         if (cameraHdr != null && (!ApiHelper.HAS_CAMERA_HDR
 232                     || !Util.isCameraHdrSupported(mParameters))) {
 233             removePreference(group, cameraHdr.getKey());
 234         }
 235     }
 236
 237     private void buildExposureCompensation(
 238             PreferenceGroup group, IconListPreference exposure) {
 239         int max = mParameters.getMaxExposureCompensation();
 240         int min = mParameters.getMinExposureCompensation();
 241         if (max == 0 && min == 0) {
 242             removePreference(group, exposure.getKey());
 243             return;
 244         }
 245         float step = mParameters.getExposureCompensationStep();
 246
 247         // show only integer values for exposure compensation
 248         int maxValue = Math.min(3, (int) FloatMath.floor(max * step));
 249         int minValue = Math.max(-3, (int) FloatMath.ceil(min * step));
 250         String explabel = mContext.getResources().getString(R.string.pref_exposure_label);
 251         CharSequence entries[] = new CharSequence[maxValue - minValue + 1];
 252         CharSequence entryValues[] = new CharSequence[maxValue - minValue + 1];
 253         CharSequence labels[] = new CharSequence[maxValue - minValue + 1];
 254         int[] icons = new int[maxValue - minValue + 1];
 255         TypedArray iconIds = mContext.getResources().obtainTypedArray(
 256                 R.array.pref_camera_exposure_icons);
 257         for (int i = minValue; i <= maxValue; ++i) {
 258             entryValues[i - minValue] = Integer.toString(Math.round(i / step));
 259             StringBuilder builder = new StringBuilder();
 260             if (i > 0) builder.append('+');
 261             entries[i - minValue] = builder.append(i).toString();
 262             labels[i - minValue] = explabel + " " + builder.toString();
 263             icons[i - minValue] = iconIds.getResourceId(3 + i, 0);
 264         }
 265         exposure.setUseSingleIcon(true);
 266         exposure.setEntries(entries);
 267         exposure.setLabels(labels);
 268         exposure.setEntryValues(entryValues);
 269         exposure.setLargeIconIds(icons);
 270     }
 271
 272     private void buildCameraId(
 273             PreferenceGroup group, IconListPreference preference) {
 274         int numOfCameras = mCameraInfo.length;
 275         if (numOfCameras < 2) {
 276             removePreference(group, preference.getKey());
 277             return;
 278         }
 279
 280         CharSequence[] entryValues = new CharSequence[numOfCameras];
 281         for (int i = 0; i < numOfCameras; ++i) {
 282             entryValues[i] = "" + i;
 283         }
 284         preference.setEntryValues(entryValues);
 285     }
 286
 287     private static boolean removePreference(PreferenceGroup group, String key) {
 288         for (int i = 0, n = group.size(); i < n; i++) {
 289             CameraPreference child = group.get(i);
 290             if (child instanceof PreferenceGroup) {
 291                 if (removePreference((PreferenceGroup) child, key)) {
 292                     return true;
 293                 }
 294             }
 295             if (child instanceof ListPreference &&
 296                     ((ListPreference) child).getKey().equals(key)) {
 297                 group.removePreference(i);
 298                 return true;
 299             }
 300         }
 301         return false;
 302     }
 303
 304     private void filterUnsupportedOptions(PreferenceGroup group,
 305             ListPreference pref, List<String> supported) {
 306
 307         // Remove the preference if the parameter is not supported or there is
 308         // only one options for the settings.
 309         if (supported == null || supported.size() <= 1) {
 310             removePreference(group, pref.getKey());
 311             return;
 312         }
 313
 314         pref.filterUnsupported(supported);
 315         if (pref.getEntries().length <= 1) {
 316             removePreference(group, pref.getKey());
 317             return;
 318         }
 319
 320         resetIfInvalid(pref);
 321     }
 322
 323     private void filterSimilarPictureSize(PreferenceGroup group,
 324             ListPreference pref) {
 325         pref.filterDuplicated();
 326         if (pref.getEntries().length <= 1) {
 327             removePreference(group, pref.getKey());
 328             return;
 329         }
 330         resetIfInvalid(pref);
 331     }
 332
 333     private void resetIfInvalid(ListPreference pref) {
 334         // Set the value to the first entry if it is invalid.
 335         String value = pref.getValue();
 336         if (pref.findIndexOfValue(value) == NOT_FOUND) {
 337             pref.setValueIndex(0);
 338         }
 339     }
 340
 341     private static List<String> sizeListToStringList(List<Size> sizes) {
 342         ArrayList<String> list = new ArrayList<String>();
 343         for (Size size : sizes) {
 344             list.add(String.format(Locale.ENGLISH, "%dx%d", size.width, size.height));
 345         }
 346         return list;
 347     }
 348
 349     public static void upgradeLocalPreferences(SharedPreferences pref) {
 350         int version;
 351         try {
 352             version = pref.getInt(KEY_LOCAL_VERSION, 0);
 353         } catch (Exception ex) {
 354             version = 0;
 355         }
 356         if (version == CURRENT_LOCAL_VERSION) return;
 357
 358         SharedPreferences.Editor editor = pref.edit();
 359         if (version == 1) {
 360             // We use numbers to represent the quality now. The quality definition is identical to
 361             // that of CamcorderProfile.java.
 362             editor.remove("pref_video_quality_key");
 363         }
 364         editor.putInt(KEY_LOCAL_VERSION, CURRENT_LOCAL_VERSION);
 365         editor.apply();
 366     }
 367
 368     public static void upgradeGlobalPreferences(SharedPreferences pref) {
 369         upgradeOldVersion(pref);
 370         upgradeCameraId(pref);
 371     }
 372
 373     private static void upgradeOldVersion(SharedPreferences pref) {
 374         int version;
 375         try {
 376             version = pref.getInt(KEY_VERSION, 0);
 377         } catch (Exception ex) {
 378             version = 0;
 379         }
 380         if (version == CURRENT_VERSION) return;
 381
 382         SharedPreferences.Editor editor = pref.edit();
 383         if (version == 0) {
 384             // We won't use the preference which change in version 1.
 385             // So, just upgrade to version 1 directly
 386             version = 1;
 387         }
 388         if (version == 1) {
 389             // Change jpeg quality {65,75,85} to {normal,fine,superfine}
 390             String quality = pref.getString(KEY_JPEG_QUALITY, "85");
 391             if (quality.equals("65")) {
 392                 quality = "normal";
 393             } else if (quality.equals("75")) {
 394                 quality = "fine";
 395             } else {
 396                 quality = "superfine";
 397             }
 398             editor.putString(KEY_JPEG_QUALITY, quality);
 399             version = 2;
 400         }
 401         if (version == 2) {
 402             editor.putString(KEY_RECORD_LOCATION,
 403                     pref.getBoolean(KEY_RECORD_LOCATION, false)
 404                     ? RecordLocationPreference.VALUE_ON
 405                     : RecordLocationPreference.VALUE_NONE);
 406             version = 3;
 407         }
 408         if (version == 3) {
 409             // Just use video quality to replace it and
 410             // ignore the current settings.
 411             editor.remove("pref_camera_videoquality_key");
 412             editor.remove("pref_camera_video_duration_key");
 413         }
 414
 415         editor.putInt(KEY_VERSION, CURRENT_VERSION);
 416         editor.apply();
 417     }
 418
 419     private static void upgradeCameraId(SharedPreferences pref) {
 420         // The id stored in the preference may be out of range if we are running
 421         // inside the emulator and a webcam is removed.
 422         // Note: This method accesses the global preferences directly, not the
 423         // combo preferences.
 424         int cameraId = readPreferredCameraId(pref);
 425         if (cameraId == 0) return;  // fast path
 426
 427         int n = CameraHolder.instance().getNumberOfCameras();
 428         if (cameraId < 0 || cameraId >= n) {
 429             writePreferredCameraId(pref, 0);
 430         }
 431     }
 432
 433     public static int readPreferredCameraId(SharedPreferences pref) {
 434         return Integer.parseInt(pref.getString(KEY_CAMERA_ID, "0"));
 435     }
 436
 437     public static void writePreferredCameraId(SharedPreferences pref,
 438             int cameraId) {
 439         Editor editor = pref.edit();
 440         editor.putString(KEY_CAMERA_ID, Integer.toString(cameraId));
 441         editor.apply();
 442     }
 443
 444     public static int readExposure(ComboPreferences preferences) {
 445         String exposure = preferences.getString(
 446                 CameraSettings.KEY_EXPOSURE,
 447                 EXPOSURE_DEFAULT_VALUE);
 448         try {
 449             return Integer.parseInt(exposure);
 450         } catch (Exception ex) {
 451             Log.e(TAG, "Invalid exposure: " + exposure);
 452         }
 453         return 0;
 454     }
 455
 456     public static int readEffectType(SharedPreferences pref) {
 457         String effectSelection = pref.getString(KEY_VIDEO_EFFECT, "none");
 458         if (effectSelection.equals("none")) {
 459             return EffectsRecorder.EFFECT_NONE;
 460         } else if (effectSelection.startsWith("goofy_face")) {
 461             return EffectsRecorder.EFFECT_GOOFY_FACE;
 462         } else if (effectSelection.startsWith("backdropper")) {
 463             return EffectsRecorder.EFFECT_BACKDROPPER;
 464         }
 465         Log.e(TAG, "Invalid effect selection: " + effectSelection);
 466         return EffectsRecorder.EFFECT_NONE;
 467     }
 468
 469     public static Object readEffectParameter(SharedPreferences pref) {
 470         String effectSelection = pref.getString(KEY_VIDEO_EFFECT, "none");
 471         if (effectSelection.equals("none")) {
 472             return null;
 473         }
 474         int separatorIndex = effectSelection.indexOf('/');
 475         String effectParameter =
 476                 effectSelection.substring(separatorIndex + 1);
 477         if (effectSelection.startsWith("goofy_face")) {
 478             if (effectParameter.equals("squeeze")) {
 479                 return EffectsRecorder.EFFECT_GF_SQUEEZE;
 480             } else if (effectParameter.equals("big_eyes")) {
 481                 return EffectsRecorder.EFFECT_GF_BIG_EYES;
 482             } else if (effectParameter.equals("big_mouth")) {
 483                 return EffectsRecorder.EFFECT_GF_BIG_MOUTH;
 484             } else if (effectParameter.equals("small_mouth")) {
 485                 return EffectsRecorder.EFFECT_GF_SMALL_MOUTH;
 486             } else if (effectParameter.equals("big_nose")) {
 487                 return EffectsRecorder.EFFECT_GF_BIG_NOSE;
 488             } else if (effectParameter.equals("small_eyes")) {
 489                 return EffectsRecorder.EFFECT_GF_SMALL_EYES;
 490             }
 491         } else if (effectSelection.startsWith("backdropper")) {
 492             // Parameter is a string that either encodes the URI to use,
 493             // or specifies 'gallery'.
 494             return effectParameter;
 495         }
 496
 497         Log.e(TAG, "Invalid effect selection: " + effectSelection);
 498         return null;
 499     }
 500
 501     public static void restorePreferences(Context context,
 502             ComboPreferences preferences, Parameters parameters) {
 503         int currentCameraId = readPreferredCameraId(preferences);
 504
 505         // Clear the preferences of both cameras.
 506         int backCameraId = CameraHolder.instance().getBackCameraId();
 507         if (backCameraId != -1) {
 508             preferences.setLocalId(context, backCameraId);
 509             Editor editor = preferences.edit();
 510             editor.clear();
 511             editor.apply();
 512         }
 513         int frontCameraId = CameraHolder.instance().getFrontCameraId();
 514         if (frontCameraId != -1) {
 515             preferences.setLocalId(context, frontCameraId);
 516             Editor editor = preferences.edit();
 517             editor.clear();
 518             editor.apply();
 519         }
 520
 521         // Switch back to the preferences of the current camera. Otherwise,
 522         // we may write the preference to wrong camera later.
 523         preferences.setLocalId(context, currentCameraId);
 524
 525         upgradeGlobalPreferences(preferences.getGlobal());
 526         upgradeLocalPreferences(preferences.getLocal());
 527
 528         // Write back the current camera id because parameters are related to
 529         // the camera. Otherwise, we may switch to the front camera but the
 530         // initial picture size is that of the back camera.
 531         initialCameraPictureSize(context, parameters);
 532         writePreferredCameraId(preferences, currentCameraId);
 533     }
 534
 535     private ArrayList<String> getSupportedVideoQuality() {
 536         ArrayList<String> supported = new ArrayList<String>();
 537         // Check for supported quality
 538         if (ApiHelper.HAS_FINE_RESOLUTION_QUALITY_LEVELS) {
 539             getFineResolutionQuality(supported);
 540         } else {
 541             supported.add(Integer.toString(CamcorderProfile.QUALITY_HIGH));
 542             CamcorderProfile high = CamcorderProfile.get(
 543                     mCameraId, CamcorderProfile.QUALITY_HIGH);
 544             CamcorderProfile low = CamcorderProfile.get(
 545                     mCameraId, CamcorderProfile.QUALITY_LOW);
 546             if (high.videoFrameHeight * high.videoFrameWidth >
 547                     low.videoFrameHeight * low.videoFrameWidth) {
 548                 supported.add(Integer.toString(CamcorderProfile.QUALITY_LOW));
 549             }
 550         }
 551
 552         return supported;
 553     }
 554
 555     @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
 556     private void getFineResolutionQuality(ArrayList<String> supported) {
 557         if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_1080P)) {
 558             supported.add(Integer.toString(CamcorderProfile.QUALITY_1080P));
 559         }
 560         if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_720P)) {
 561             supported.add(Integer.toString(CamcorderProfile.QUALITY_720P));
 562         }
 563         if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_480P)) {
 564             supported.add(Integer.toString(CamcorderProfile.QUALITY_480P));
 565         }
 566     }
 567
 568     private void initVideoEffect(PreferenceGroup group, ListPreference videoEffect) {
 569         CharSequence[] values = videoEffect.getEntryValues();
 570
 571         boolean goofyFaceSupported =
 572                 EffectsRecorder.isEffectSupported(EffectsRecorder.EFFECT_GOOFY_FACE);
 573         boolean backdropperSupported =
 574                 EffectsRecorder.isEffectSupported(EffectsRecorder.EFFECT_BACKDROPPER) &&
 575                 Util.isAutoExposureLockSupported(mParameters) &&
 576                 Util.isAutoWhiteBalanceLockSupported(mParameters);
 577
 578         ArrayList<String> supported = new ArrayList<String>();
 579         for (CharSequence value : values) {
 580             String effectSelection = value.toString();
 581             if (!goofyFaceSupported && effectSelection.startsWith("goofy_face")) continue;
 582             if (!backdropperSupported && effectSelection.startsWith("backdropper")) continue;
 583             supported.add(effectSelection);
 584         }
 585
 586         filterUnsupportedOptions(group, videoEffect, supported);
 587     }
 588 }