CameraSettings.java revision 6988d4e2ef8d14d8bf3ee81c8eb3175bbf1b88ec
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.graphics.drawable.Drawable; 23import android.hardware.Camera.Parameters; 24import android.hardware.Camera.Size; 25import android.media.CamcorderProfile; 26import android.preference.PreferenceManager; 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_RECORD_LOCATION = RecordLocationPreference.KEY; 40 public static final String KEY_VIDEO_QUALITY = "pref_video_quality_key"; 41 public static final String KEY_PICTURE_SIZE = "pref_camera_picturesize_key"; 42 public static final String KEY_JPEG_QUALITY = "pref_camera_jpegquality_key"; 43 public static final String KEY_FOCUS_MODE = "pref_camera_focusmode_key"; 44 public static final String KEY_FLASH_MODE = "pref_camera_flashmode_key"; 45 public static final String KEY_VIDEOCAMERA_FLASH_MODE = "pref_camera_video_flashmode_key"; 46 public static final String KEY_COLOR_EFFECT = "pref_camera_coloreffect_key"; 47 public static final String KEY_WHITE_BALANCE = "pref_camera_whitebalance_key"; 48 public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key"; 49 public static final String KEY_QUICK_CAPTURE = "pref_camera_quickcapture_key"; 50 public static final String KEY_EXPOSURE = "pref_camera_exposure_key"; 51 52 public static final String QUICK_CAPTURE_ON = "on"; 53 public static final String QUICK_CAPTURE_OFF = "off"; 54 55 private static final String VIDEO_QUALITY_HIGH = "high"; 56 private static final String VIDEO_QUALITY_MMS = "mms"; 57 private static final String VIDEO_QUALITY_YOUTUBE = "youtube"; 58 59 public static final int CURRENT_VERSION = 4; 60 61 // max video duration in seconds for mms and youtube. 62 private static final int MMS_VIDEO_DURATION = CamcorderProfile.getMmsRecordingDurationInSeconds(); 63 private static final int YOUTUBE_VIDEO_DURATION = 10 * 60; // 10 mins 64 private static final int DEFAULT_VIDEO_DURATION = 30 * 60; // 10 mins 65 66 public static final String DEFAULT_VIDEO_QUALITY_VALUE = "high"; 67 68 // MMS video length 69 public static final int DEFAULT_VIDEO_DURATION_VALUE = -1; 70 71 @SuppressWarnings("unused") 72 private static final String TAG = "CameraSettings"; 73 74 private final Context mContext; 75 private final Parameters mParameters; 76 77 public CameraSettings(Activity activity, Parameters parameters) { 78 mContext = activity; 79 mParameters = parameters; 80 } 81 82 public PreferenceGroup getPreferenceGroup(int preferenceRes) { 83 PreferenceInflater inflater = new PreferenceInflater(mContext); 84 PreferenceGroup group = 85 (PreferenceGroup) inflater.inflate(preferenceRes); 86 initPreference(group); 87 return group; 88 } 89 90 public static void initialCameraPictureSize( 91 Context context, Parameters parameters) { 92 // When launching the camera app first time, we will set the picture 93 // size to the first one in the list defined in "arrays.xml" and is also 94 // supported by the driver. 95 List<Size> supported = parameters.getSupportedPictureSizes(); 96 if (supported == null) return; 97 for (String candidate : context.getResources().getStringArray( 98 R.array.pref_camera_picturesize_entryvalues)) { 99 if (setCameraPictureSize(candidate, supported, parameters)) { 100 SharedPreferences.Editor editor = PreferenceManager 101 .getDefaultSharedPreferences(context).edit(); 102 editor.putString(KEY_PICTURE_SIZE, candidate); 103 editor.commit(); 104 return; 105 } 106 } 107 Log.e(TAG, "No supported picture size found"); 108 } 109 110 public static void removePreferenceFromScreen( 111 PreferenceGroup group, String key) { 112 removePreference(group, key); 113 } 114 115 public static boolean setCameraPictureSize( 116 String candidate, List<Size> supported, Parameters parameters) { 117 int index = candidate.indexOf('x'); 118 if (index == NOT_FOUND) return false; 119 int width = Integer.parseInt(candidate.substring(0, index)); 120 int height = Integer.parseInt(candidate.substring(index + 1)); 121 for (Size size: supported) { 122 if (size.width == width && size.height == height) { 123 parameters.setPictureSize(width, height); 124 return true; 125 } 126 } 127 return false; 128 } 129 130 private void initPreference(PreferenceGroup group) { 131 ListPreference videoQuality = group.findPreference(KEY_VIDEO_QUALITY); 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 ListPreference videoFlashMode = 140 group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE); 141 142 // Since the screen could be loaded from different resources, we need 143 // to check if the preference is available here 144 if (videoQuality != null) { 145 // Modify video duration settings. 146 // The first entry is for MMS video duration, and we need to fill 147 // in the device-dependent value (in seconds). 148 CharSequence[] entries = videoQuality.getEntries(); 149 CharSequence[] values = videoQuality.getEntryValues(); 150 for (int i = 0; i < entries.length; ++i) { 151 if (VIDEO_QUALITY_MMS.equals(values[i])) { 152 entries[i] = entries[i].toString().replace( 153 "30", Integer.toString(MMS_VIDEO_DURATION)); 154 break; 155 } 156 } 157 } 158 159 // Filter out unsupported settings / options 160 if (pictureSize != null) { 161 filterUnsupportedOptions(group, pictureSize, sizeListToStringList( 162 mParameters.getSupportedPictureSizes())); 163 } 164 if (whiteBalance != null) { 165 filterUnsupportedOptions(group, 166 whiteBalance, mParameters.getSupportedWhiteBalance()); 167 } 168 if (colorEffect != null) { 169 filterUnsupportedOptions(group, 170 colorEffect, mParameters.getSupportedColorEffects()); 171 } 172 if (sceneMode != null) { 173 filterUnsupportedOptions(group, 174 sceneMode, mParameters.getSupportedSceneModes()); 175 } 176 if (flashMode != null) { 177 filterUnsupportedOptions(group, 178 flashMode, mParameters.getSupportedFlashModes()); 179 } 180 if (focusMode != null) { 181 filterUnsupportedOptions(group, 182 focusMode, mParameters.getSupportedFocusModes()); 183 } 184 if (videoFlashMode != null) { 185 filterUnsupportedOptions(group, 186 videoFlashMode, mParameters.getSupportedFlashModes()); 187 } 188 189 if (exposure != null) { 190 buildExposureCompensation(group, exposure); 191 } 192 } 193 194 private void buildExposureCompensation( 195 PreferenceGroup group, ListPreference exposure) { 196 int max = mParameters.getMaxExposureCompensation(); 197 int min = mParameters.getMinExposureCompensation(); 198 if (max == 0 && min == 0) { 199 removePreference(group, exposure.getKey()); 200 return; 201 } 202 float step = mParameters.getExposureCompensationStep(); 203 204 // show only integer values for exposure compensation 205 int maxValue = (int) Math.floor(max * step); 206 int minValue = (int) Math.ceil(min * step); 207 CharSequence entries[] = new CharSequence[maxValue - minValue + 1]; 208 CharSequence entryValues[] = new CharSequence[maxValue - minValue + 1]; 209 for (int i = minValue; i <= maxValue; ++i) { 210 entryValues[maxValue - i] = Integer.toString(Math.round(i / step)); 211 StringBuilder builder = new StringBuilder(); 212 if (i > 0) builder.append('+'); 213 entries[maxValue - i] = builder.append(i).toString(); 214 } 215 exposure.setEntries(entries); 216 exposure.setEntryValues(entryValues); 217 } 218 219 private static boolean removePreference(PreferenceGroup group, String key) { 220 for (int i = 0, n = group.size(); i < n; i++) { 221 CameraPreference child = group.get(i); 222 if (child instanceof PreferenceGroup) { 223 if (removePreference((PreferenceGroup) child, key)) { 224 return true; 225 } 226 } 227 if (child instanceof ListPreference && 228 ((ListPreference) child).getKey().equals(key)) { 229 group.removePreference(i); 230 return true; 231 } 232 } 233 return false; 234 } 235 236 private void filterUnsupportedOptions(PreferenceGroup group, 237 ListPreference pref, List<String> supported) { 238 239 CharSequence[] allEntries = pref.getEntries(); 240 241 // Remove the preference if the parameter is not supported or there is 242 // only one options for the settings. 243 if (supported == null || supported.size() <= 1) { 244 removePreference(group, pref.getKey()); 245 return; 246 } 247 248 CharSequence[] allEntryValues = pref.getEntryValues(); 249 Drawable[] allIcons = (pref instanceof IconListPreference) 250 ? ((IconListPreference) pref).getIcons() 251 : null; 252 ArrayList<CharSequence> entries = new ArrayList<CharSequence>(); 253 ArrayList<CharSequence> entryValues = new ArrayList<CharSequence>(); 254 ArrayList<Drawable> icons = 255 allIcons == null ? null : new ArrayList<Drawable>(); 256 for (int i = 0, len = allEntryValues.length; i < len; i++) { 257 if (supported.indexOf(allEntryValues[i].toString()) != NOT_FOUND) { 258 entries.add(allEntries[i]); 259 entryValues.add(allEntryValues[i]); 260 if (allIcons != null) icons.add(allIcons[i]); 261 } 262 } 263 264 // Set entries and entry values to list preference. 265 int size = entries.size(); 266 pref.setEntries(entries.toArray(new CharSequence[size])); 267 pref.setEntryValues(entryValues.toArray(new CharSequence[size])); 268 if (allIcons != null) { 269 ((IconListPreference) pref) 270 .setIcons(icons.toArray(new Drawable[size])); 271 } 272 273 // Set the value to the first entry if it is invalid. 274 String value = pref.getValue(); 275 if (pref.findIndexOfValue(value) == NOT_FOUND) { 276 pref.setValueIndex(0); 277 } 278 } 279 280 private static List<String> sizeListToStringList(List<Size> sizes) { 281 ArrayList<String> list = new ArrayList<String>(); 282 for (Size size : sizes) { 283 list.add(String.format("%dx%d", size.width, size.height)); 284 } 285 return list; 286 } 287 288 public static void upgradePreferences(SharedPreferences pref) { 289 int version; 290 try { 291 version = pref.getInt(KEY_VERSION, 0); 292 } catch (Exception ex) { 293 version = 0; 294 } 295 if (version == CURRENT_VERSION) return; 296 297 SharedPreferences.Editor editor = pref.edit(); 298 if (version == 0) { 299 // We won't use the preference which change in version 1. 300 // So, just upgrade to version 1 directly 301 version = 1; 302 } 303 if (version == 1) { 304 // Change jpeg quality {65,75,85} to {normal,fine,superfine} 305 String quality = pref.getString(KEY_JPEG_QUALITY, "85"); 306 if (quality.equals("65")) { 307 quality = "normal"; 308 } else if (quality.equals("75")) { 309 quality = "fine"; 310 } else { 311 quality = "superfine"; 312 } 313 editor.putString(KEY_JPEG_QUALITY, quality); 314 version = 2; 315 } 316 if (version == 2) { 317 editor.putString(KEY_RECORD_LOCATION, 318 pref.getBoolean(KEY_RECORD_LOCATION, false) 319 ? RecordLocationPreference.VALUE_ON 320 : RecordLocationPreference.VALUE_NONE); 321 version = 3; 322 } 323 if (version == 3) { 324 // Just use video quality to replace it and 325 // ignore the current settings. 326 editor.remove("pref_camera_videoquality_key"); 327 editor.remove("pref_camera_video_duration_key"); 328 } 329 editor.putInt(KEY_VERSION, CURRENT_VERSION); 330 editor.commit(); 331 } 332 333 public static boolean getVideoQuality(String quality) { 334 return VIDEO_QUALITY_YOUTUBE.equals( 335 quality) || VIDEO_QUALITY_HIGH.equals(quality); 336 } 337 338 public static int getVidoeDurationInMillis(String quality) { 339 if (VIDEO_QUALITY_MMS.equals(quality)) { 340 return MMS_VIDEO_DURATION * 1000; 341 } else if (VIDEO_QUALITY_YOUTUBE.equals(quality)) { 342 return YOUTUBE_VIDEO_DURATION * 1000; 343 } 344 return DEFAULT_VIDEO_DURATION * 1000; 345 } 346} 347