CameraSettings.java revision b3681fed693233f202e250ff22fed70d1bbb1932
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.content.Context; 21import android.content.SharedPreferences; 22import android.content.SharedPreferences.Editor; 23import android.hardware.Camera.CameraInfo; 24import android.hardware.Camera.Parameters; 25import android.hardware.Camera.Size; 26import android.media.CamcorderProfile; 27import android.util.Log; 28 29import java.util.ArrayList; 30import java.util.List; 31 32/** 33 * Provides utilities and keys for Camera settings. 34 */ 35public class CameraSettings { 36 private static final int NOT_FOUND = -1; 37 38 public static final String KEY_VERSION = "pref_version_key"; 39 public static final String KEY_LOCAL_VERSION = "pref_local_version_key"; 40 public static final String KEY_RECORD_LOCATION = RecordLocationPreference.KEY; 41 public static final String KEY_VIDEO_QUALITY = "pref_video_quality_key"; 42 public static final String KEY_VIDEO_TIME_LAPSE_FRAME_INTERVAL = "pref_video_time_lapse_frame_interval_key"; 43 public static final String KEY_PICTURE_SIZE = "pref_camera_picturesize_key"; 44 public static final String KEY_JPEG_QUALITY = "pref_camera_jpegquality_key"; 45 public static final String KEY_FOCUS_MODE = "pref_camera_focusmode_key"; 46 public static final String KEY_FLASH_MODE = "pref_camera_flashmode_key"; 47 public static final String KEY_VIDEOCAMERA_FLASH_MODE = "pref_camera_video_flashmode_key"; 48 public static final String KEY_COLOR_EFFECT = "pref_camera_coloreffect_key"; 49 public static final String KEY_WHITE_BALANCE = "pref_camera_whitebalance_key"; 50 public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key"; 51 public static final String KEY_EXPOSURE = "pref_camera_exposure_key"; 52 public static final String KEY_CAMERA_ID = "pref_camera_id_key"; 53 54 public static final String EXPOSURE_DEFAULT_VALUE = "0"; 55 56 public static final int CURRENT_VERSION = 4; 57 public static final int CURRENT_LOCAL_VERSION = 1; 58 59 // max video duration in seconds for mms and youtube. 60 private static final int MMS_VIDEO_DURATION = CamcorderProfile.get(CamcorderProfile.QUALITY_LOW).duration; 61 private static final int YOUTUBE_VIDEO_DURATION = 15 * 60; // 15 mins 62 private static final int DEFAULT_VIDEO_DURATION = 0; // no limit 63 64 public static final String DEFAULT_VIDEO_QUALITY_VALUE = "high"; 65 66 private static final String TAG = "CameraSettings"; 67 68 private final Context mContext; 69 private final Parameters mParameters; 70 private final CameraInfo[] mCameraInfo; 71 private final int mCameraId; 72 73 public CameraSettings(Activity activity, Parameters parameters, 74 int cameraId, CameraInfo[] cameraInfo) { 75 mContext = activity; 76 mParameters = parameters; 77 mCameraId = cameraId; 78 mCameraInfo = cameraInfo; 79 } 80 81 public PreferenceGroup getPreferenceGroup(int preferenceRes) { 82 PreferenceInflater inflater = new PreferenceInflater(mContext); 83 PreferenceGroup group = 84 (PreferenceGroup) inflater.inflate(preferenceRes); 85 initPreference(group); 86 return group; 87 } 88 89 public static void initialCameraPictureSize( 90 Context context, Parameters parameters) { 91 // When launching the camera app first time, we will set the picture 92 // size to the first one in the list defined in "arrays.xml" and is also 93 // supported by the driver. 94 List<Size> supported = parameters.getSupportedPictureSizes(); 95 if (supported == null) return; 96 for (String candidate : context.getResources().getStringArray( 97 R.array.pref_camera_picturesize_entryvalues)) { 98 if (setCameraPictureSize(candidate, supported, parameters)) { 99 SharedPreferences.Editor editor = ComboPreferences 100 .get(context).edit(); 101 editor.putString(KEY_PICTURE_SIZE, candidate); 102 editor.apply(); 103 return; 104 } 105 } 106 Log.e(TAG, "No supported picture size found"); 107 } 108 109 public static void removePreferenceFromScreen( 110 PreferenceGroup group, String key) { 111 removePreference(group, key); 112 } 113 114 public static boolean setCameraPictureSize( 115 String candidate, List<Size> supported, Parameters parameters) { 116 int index = candidate.indexOf('x'); 117 if (index == NOT_FOUND) return false; 118 int width = Integer.parseInt(candidate.substring(0, index)); 119 int height = Integer.parseInt(candidate.substring(index + 1)); 120 for (Size size: supported) { 121 if (size.width == width && size.height == height) { 122 parameters.setPictureSize(width, height); 123 return true; 124 } 125 } 126 return false; 127 } 128 129 private void initPreference(PreferenceGroup group) { 130 ListPreference videoQuality = group.findPreference(KEY_VIDEO_QUALITY); 131 ListPreference timeLapseInterval = group.findPreference(KEY_VIDEO_TIME_LAPSE_FRAME_INTERVAL); 132 ListPreference pictureSize = group.findPreference(KEY_PICTURE_SIZE); 133 ListPreference whiteBalance = group.findPreference(KEY_WHITE_BALANCE); 134 ListPreference colorEffect = group.findPreference(KEY_COLOR_EFFECT); 135 ListPreference sceneMode = group.findPreference(KEY_SCENE_MODE); 136 ListPreference flashMode = group.findPreference(KEY_FLASH_MODE); 137 ListPreference focusMode = group.findPreference(KEY_FOCUS_MODE); 138 ListPreference exposure = group.findPreference(KEY_EXPOSURE); 139 IconListPreference cameraIdPref = 140 (IconListPreference)group.findPreference(KEY_CAMERA_ID); 141 ListPreference videoFlashMode = 142 group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE); 143 144 // Since the screen could be loaded from different resources, we need 145 // to check if the preference is available here 146 if (videoQuality != null) { 147 initVideoQuality(videoQuality); 148 } 149 150 if (pictureSize != null) { 151 filterUnsupportedOptions(group, pictureSize, sizeListToStringList( 152 mParameters.getSupportedPictureSizes())); 153 } 154 if (whiteBalance != null) { 155 filterUnsupportedOptions(group, 156 whiteBalance, mParameters.getSupportedWhiteBalance()); 157 } 158 if (colorEffect != null) { 159 filterUnsupportedOptions(group, 160 colorEffect, mParameters.getSupportedColorEffects()); 161 } 162 if (sceneMode != null) { 163 filterUnsupportedOptions(group, 164 sceneMode, mParameters.getSupportedSceneModes()); 165 } 166 if (flashMode != null) { 167 filterUnsupportedOptions(group, 168 flashMode, mParameters.getSupportedFlashModes()); 169 } 170 if (focusMode != null) { 171 filterUnsupportedOptions(group, 172 focusMode, mParameters.getSupportedFocusModes()); 173 } 174 if (videoFlashMode != null) { 175 filterUnsupportedOptions(group, 176 videoFlashMode, mParameters.getSupportedFlashModes()); 177 } 178 if (exposure != null) buildExposureCompensation(group, exposure); 179 if (cameraIdPref != null) buildCameraId(group, cameraIdPref); 180 181 if (timeLapseInterval != null) resetIfInvalid(timeLapseInterval); 182 } 183 184 private static List<String> getSupportedTimeLapseProfiles(int cameraId) { 185 ArrayList<String> supportedProfiles = new ArrayList<String>(); 186 if (CamcorderProfile.hasProfile(cameraId, CamcorderProfile.QUALITY_TIME_LAPSE_480P)) { 187 supportedProfiles.add(Integer.toString(CamcorderProfile.QUALITY_TIME_LAPSE_480P)); 188 } 189 if (CamcorderProfile.hasProfile(cameraId, CamcorderProfile.QUALITY_TIME_LAPSE_720P)) { 190 supportedProfiles.add(Integer.toString(CamcorderProfile.QUALITY_TIME_LAPSE_720P)); 191 } 192 if (CamcorderProfile.hasProfile(cameraId, CamcorderProfile.QUALITY_TIME_LAPSE_1080P)) { 193 supportedProfiles.add(Integer.toString(CamcorderProfile.QUALITY_TIME_LAPSE_1080P)); 194 } 195 196 return supportedProfiles; 197 } 198 199 private void buildExposureCompensation( 200 PreferenceGroup group, ListPreference exposure) { 201 int max = mParameters.getMaxExposureCompensation(); 202 int min = mParameters.getMinExposureCompensation(); 203 if (max == 0 && min == 0) { 204 removePreference(group, exposure.getKey()); 205 return; 206 } 207 float step = mParameters.getExposureCompensationStep(); 208 209 // show only integer values for exposure compensation 210 int maxValue = (int) Math.floor(max * step); 211 int minValue = (int) Math.ceil(min * step); 212 CharSequence entries[] = new CharSequence[maxValue - minValue + 1]; 213 CharSequence entryValues[] = new CharSequence[maxValue - minValue + 1]; 214 for (int i = minValue; i <= maxValue; ++i) { 215 entryValues[maxValue - i] = Integer.toString(Math.round(i / step)); 216 StringBuilder builder = new StringBuilder(); 217 if (i > 0) builder.append('+'); 218 entries[maxValue - i] = builder.append(i).toString(); 219 } 220 exposure.setEntries(entries); 221 exposure.setEntryValues(entryValues); 222 } 223 224 private void buildCameraId( 225 PreferenceGroup group, IconListPreference preference) { 226 int numOfCameras = mCameraInfo.length; 227 if (numOfCameras < 2) { 228 removePreference(group, preference.getKey()); 229 return; 230 } 231 232 CharSequence[] entryValues = new CharSequence[2]; 233 for (int i = 0 ; i < mCameraInfo.length ; ++i) { 234 int index = 235 (mCameraInfo[i].facing == CameraInfo.CAMERA_FACING_FRONT) 236 ? CameraInfo.CAMERA_FACING_FRONT 237 : CameraInfo.CAMERA_FACING_BACK; 238 if (entryValues[index] == null) { 239 entryValues[index] = "" + i; 240 if (entryValues[((index == 1) ? 0 : 1)] != null) break; 241 } 242 } 243 preference.setEntryValues(entryValues); 244 } 245 246 private static boolean removePreference(PreferenceGroup group, String key) { 247 for (int i = 0, n = group.size(); i < n; i++) { 248 CameraPreference child = group.get(i); 249 if (child instanceof PreferenceGroup) { 250 if (removePreference((PreferenceGroup) child, key)) { 251 return true; 252 } 253 } 254 if (child instanceof ListPreference && 255 ((ListPreference) child).getKey().equals(key)) { 256 group.removePreference(i); 257 return true; 258 } 259 } 260 return false; 261 } 262 263 private void filterUnsupportedOptions(PreferenceGroup group, 264 ListPreference pref, List<String> supported) { 265 266 // Remove the preference if the parameter is not supported or there is 267 // only one options for the settings. 268 if (supported == null || supported.size() <= 1) { 269 removePreference(group, pref.getKey()); 270 return; 271 } 272 273 pref.filterUnsupported(supported); 274 if (pref.getEntries().length <= 1) { 275 removePreference(group, pref.getKey()); 276 return; 277 } 278 279 resetIfInvalid(pref); 280 } 281 282 private void resetIfInvalid(ListPreference pref) { 283 // Set the value to the first entry if it is invalid. 284 String value = pref.getValue(); 285 if (pref.findIndexOfValue(value) == NOT_FOUND) { 286 pref.setValueIndex(0); 287 } 288 } 289 290 private static List<String> sizeListToStringList(List<Size> sizes) { 291 ArrayList<String> list = new ArrayList<String>(); 292 for (Size size : sizes) { 293 list.add(String.format("%dx%d", size.width, size.height)); 294 } 295 return list; 296 } 297 298 public static void upgradeLocalPreferences(SharedPreferences pref) { 299 int version; 300 try { 301 version = pref.getInt(KEY_LOCAL_VERSION, 0); 302 } catch (Exception ex) { 303 version = 0; 304 } 305 if (version == CURRENT_LOCAL_VERSION) return; 306 SharedPreferences.Editor editor = pref.edit(); 307 editor.putInt(KEY_LOCAL_VERSION, CURRENT_LOCAL_VERSION); 308 editor.apply(); 309 } 310 311 public static void upgradeGlobalPreferences(SharedPreferences pref) { 312 int version; 313 try { 314 version = pref.getInt(KEY_VERSION, 0); 315 } catch (Exception ex) { 316 version = 0; 317 } 318 if (version == CURRENT_VERSION) return; 319 320 SharedPreferences.Editor editor = pref.edit(); 321 if (version == 0) { 322 // We won't use the preference which change in version 1. 323 // So, just upgrade to version 1 directly 324 version = 1; 325 } 326 if (version == 1) { 327 // Change jpeg quality {65,75,85} to {normal,fine,superfine} 328 String quality = pref.getString(KEY_JPEG_QUALITY, "85"); 329 if (quality.equals("65")) { 330 quality = "normal"; 331 } else if (quality.equals("75")) { 332 quality = "fine"; 333 } else { 334 quality = "superfine"; 335 } 336 editor.putString(KEY_JPEG_QUALITY, quality); 337 version = 2; 338 } 339 if (version == 2) { 340 editor.putString(KEY_RECORD_LOCATION, 341 pref.getBoolean(KEY_RECORD_LOCATION, false) 342 ? RecordLocationPreference.VALUE_ON 343 : RecordLocationPreference.VALUE_NONE); 344 version = 3; 345 } 346 if (version == 3) { 347 // Just use video quality to replace it and 348 // ignore the current settings. 349 editor.remove("pref_camera_videoquality_key"); 350 editor.remove("pref_camera_video_duration_key"); 351 } 352 editor.putInt(KEY_VERSION, CURRENT_VERSION); 353 editor.apply(); 354 } 355 356 public static boolean getVideoQuality(Context context, String quality) { 357 return context.getString(R.string.pref_video_quality_youtube).equals(quality) 358 || context.getString(R.string.pref_video_quality_high).equals(quality); 359 } 360 361 public static int getVideoDurationInMillis(Context context, String quality) { 362 if (context.getString(R.string.pref_video_quality_mms).equals(quality)) { 363 return MMS_VIDEO_DURATION * 1000; 364 } else if (context.getString(R.string.pref_video_quality_youtube).equals(quality)) { 365 return YOUTUBE_VIDEO_DURATION * 1000; 366 } 367 return DEFAULT_VIDEO_DURATION; 368 } 369 370 public static int readPreferredCameraId(SharedPreferences pref) { 371 return Integer.parseInt(pref.getString(KEY_CAMERA_ID, "0")); 372 } 373 374 public static void writePreferredCameraId(SharedPreferences pref, 375 int cameraId) { 376 Editor editor = pref.edit(); 377 editor.putString(KEY_CAMERA_ID, Integer.toString(cameraId)); 378 editor.apply(); 379 } 380 381 382 public static void restorePreferences(Context context, 383 ComboPreferences preferences, Parameters parameters) { 384 int currentCameraId = readPreferredCameraId(preferences); 385 386 // Clear the preferences of both cameras. 387 int backCameraId = CameraHolder.instance().getBackCameraId(); 388 if (backCameraId != -1) { 389 preferences.setLocalId(context, backCameraId); 390 Editor editor = preferences.edit(); 391 editor.clear(); 392 editor.apply(); 393 } 394 int frontCameraId = CameraHolder.instance().getFrontCameraId(); 395 if (frontCameraId != -1) { 396 preferences.setLocalId(context, frontCameraId); 397 Editor editor = preferences.edit(); 398 editor.clear(); 399 editor.apply(); 400 } 401 402 upgradeGlobalPreferences(preferences.getGlobal()); 403 upgradeLocalPreferences(preferences.getLocal()); 404 405 // Write back the current camera id because parameters are related to 406 // the camera. Otherwise, we may switch to the front camera but the 407 // initial picture size is that of the back camera. 408 initialCameraPictureSize(context, parameters); 409 writePreferredCameraId(preferences, currentCameraId); 410 } 411 412 private void initVideoQuality(ListPreference videoQuality) { 413 CharSequence[] entries = videoQuality.getEntries(); 414 CharSequence[] values = videoQuality.getEntryValues(); 415 if (Util.isMmsCapable(mContext)) { 416 // We need to fill in the device-dependent value (in seconds). 417 for (int i = 0; i < entries.length; ++i) { 418 if (mContext.getString(R.string.pref_video_quality_mms).equals(values[i])) { 419 entries[i] = entries[i].toString().replace( 420 "30", Integer.toString(MMS_VIDEO_DURATION)); 421 break; 422 } 423 } 424 } else { 425 // The device does not support mms. Remove it. Using 426 // filterUnsupported is not efficient but adding a new method 427 // for remove is not worth it. 428 ArrayList<String> supported = new ArrayList<String>(); 429 for (int i = 0; i < entries.length; ++i) { 430 if (!mContext.getString(R.string.pref_video_quality_mms).equals(values[i])) { 431 supported.add(values[i].toString()); 432 } 433 } 434 videoQuality.filterUnsupported(supported); 435 } 436 } 437} 438