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.app.Activity; 20 import android.content.Context; 21 import android.content.SharedPreferences; 22 import android.hardware.Camera.Parameters; 23 import android.hardware.Camera.Size; 24 import android.media.CamcorderProfile; 25 import android.preference.PreferenceManager; 26 import android.util.Log; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 31 /** 32 * Provides utilities and keys for Camera settings. 33 */ 34 public class CameraSettings { 35 private static final int NOT_FOUND = -1; 36 37 public static final String KEY_VERSION = "pref_version_key"; 38 public static final String KEY_RECORD_LOCATION = RecordLocationPreference.KEY; 39 public static final String KEY_VIDEO_QUALITY = "pref_video_quality_key"; 40 public static final String KEY_PICTURE_SIZE = "pref_camera_picturesize_key"; 41 public static final String KEY_JPEG_QUALITY = "pref_camera_jpegquality_key"; 42 public static final String KEY_FOCUS_MODE = "pref_camera_focusmode_key"; 43 public static final String KEY_FLASH_MODE = "pref_camera_flashmode_key"; 44 public static final String KEY_VIDEOCAMERA_FLASH_MODE = "pref_camera_video_flashmode_key"; 45 public static final String KEY_COLOR_EFFECT = "pref_camera_coloreffect_key"; 46 public static final String KEY_WHITE_BALANCE = "pref_camera_whitebalance_key"; 47 public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key"; 48 public static final String KEY_QUICK_CAPTURE = "pref_camera_quickcapture_key"; 49 public static final String KEY_EXPOSURE = "pref_camera_exposure_key"; 50 51 public static final String QUICK_CAPTURE_ON = "on"; 52 public static final String QUICK_CAPTURE_OFF = "off"; 53 54 private static final String VIDEO_QUALITY_HIGH = "high"; 55 private static final String VIDEO_QUALITY_MMS = "mms"; 56 private static final String VIDEO_QUALITY_YOUTUBE = "youtube"; 57 58 public static final String EXPOSURE_DEFAULT_VALUE = "0"; 59 60 public static final int CURRENT_VERSION = 4; 61 62 // max video duration in seconds for mms and youtube. 63 private static final int MMS_VIDEO_DURATION = CamcorderProfile.get(CamcorderProfile.QUALITY_LOW).duration; 64 private static final int YOUTUBE_VIDEO_DURATION = 10 * 60; // 10 mins 65 private static final int DEFAULT_VIDEO_DURATION = 30 * 60; // 10 mins 66 67 public static final String DEFAULT_VIDEO_QUALITY_VALUE = "high"; 68 69 // MMS video length 70 public static final int DEFAULT_VIDEO_DURATION_VALUE = -1; 71 72 @SuppressWarnings("unused") 73 private static final String TAG = "CameraSettings"; 74 75 private final Context mContext; 76 private final Parameters mParameters; 77 78 public CameraSettings(Activity activity, Parameters parameters) { 79 mContext = activity; 80 mParameters = parameters; 81 } 82 83 public PreferenceGroup getPreferenceGroup(int preferenceRes) { 84 PreferenceInflater inflater = new PreferenceInflater(mContext); 85 PreferenceGroup group = 86 (PreferenceGroup) inflater.inflate(preferenceRes); 87 initPreference(group); 88 return group; 89 } 90 91 public static void initialCameraPictureSize( 92 Context context, Parameters parameters) { 93 // When launching the camera app first time, we will set the picture 94 // size to the first one in the list defined in "arrays.xml" and is also 95 // supported by the driver. 96 List<Size> supported = parameters.getSupportedPictureSizes(); 97 if (supported == null) return; 98 for (String candidate : context.getResources().getStringArray( 99 R.array.pref_camera_picturesize_entryvalues)) { 100 if (setCameraPictureSize(candidate, supported, parameters)) { 101 SharedPreferences.Editor editor = PreferenceManager 102 .getDefaultSharedPreferences(context).edit(); 103 editor.putString(KEY_PICTURE_SIZE, candidate); 104 editor.commit(); 105 return; 106 } 107 } 108 Log.e(TAG, "No supported picture size found"); 109 } 110 111 public static void removePreferenceFromScreen( 112 PreferenceGroup group, String key) { 113 removePreference(group, key); 114 } 115 116 public static boolean setCameraPictureSize( 117 String candidate, List<Size> supported, Parameters parameters) { 118 int index = candidate.indexOf('x'); 119 if (index == NOT_FOUND) return false; 120 int width = Integer.parseInt(candidate.substring(0, index)); 121 int height = Integer.parseInt(candidate.substring(index + 1)); 122 for (Size size: supported) { 123 if (size.width == width && size.height == height) { 124 parameters.setPictureSize(width, height); 125 return true; 126 } 127 } 128 return false; 129 } 130 131 private void initPreference(PreferenceGroup group) { 132 ListPreference videoQuality = group.findPreference(KEY_VIDEO_QUALITY); 133 ListPreference pictureSize = group.findPreference(KEY_PICTURE_SIZE); 134 ListPreference whiteBalance = group.findPreference(KEY_WHITE_BALANCE); 135 ListPreference colorEffect = group.findPreference(KEY_COLOR_EFFECT); 136 ListPreference sceneMode = group.findPreference(KEY_SCENE_MODE); 137 ListPreference flashMode = group.findPreference(KEY_FLASH_MODE); 138 ListPreference focusMode = group.findPreference(KEY_FOCUS_MODE); 139 ListPreference exposure = group.findPreference(KEY_EXPOSURE); 140 ListPreference videoFlashMode = 141 group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE); 142 143 // Since the screen could be loaded from different resources, we need 144 // to check if the preference is available here 145 if (videoQuality != null) { 146 // Modify video duration settings. 147 // The first entry is for MMS video duration, and we need to fill 148 // in the device-dependent value (in seconds). 149 CharSequence[] entries = videoQuality.getEntries(); 150 CharSequence[] values = videoQuality.getEntryValues(); 151 for (int i = 0; i < entries.length; ++i) { 152 if (VIDEO_QUALITY_MMS.equals(values[i])) { 153 entries[i] = entries[i].toString().replace( 154 "30", Integer.toString(MMS_VIDEO_DURATION)); 155 break; 156 } 157 } 158 } 159 160 // Filter out unsupported settings / options 161 if (pictureSize != null) { 162 filterUnsupportedOptions(group, pictureSize, sizeListToStringList( 163 mParameters.getSupportedPictureSizes())); 164 } 165 if (whiteBalance != null) { 166 filterUnsupportedOptions(group, 167 whiteBalance, mParameters.getSupportedWhiteBalance()); 168 } 169 if (colorEffect != null) { 170 filterUnsupportedOptions(group, 171 colorEffect, mParameters.getSupportedColorEffects()); 172 } 173 if (sceneMode != null) { 174 filterUnsupportedOptions(group, 175 sceneMode, mParameters.getSupportedSceneModes()); 176 } 177 if (flashMode != null) { 178 filterUnsupportedOptions(group, 179 flashMode, mParameters.getSupportedFlashModes()); 180 } 181 if (focusMode != null) { 182 filterUnsupportedOptions(group, 183 focusMode, mParameters.getSupportedFocusModes()); 184 } 185 if (videoFlashMode != null) { 186 filterUnsupportedOptions(group, 187 videoFlashMode, mParameters.getSupportedFlashModes()); 188 } 189 190 if (exposure != null) { 191 buildExposureCompensation(group, exposure); 192 } 193 } 194 195 private void buildExposureCompensation( 196 PreferenceGroup group, ListPreference exposure) { 197 int max = mParameters.getMaxExposureCompensation(); 198 int min = mParameters.getMinExposureCompensation(); 199 if (max == 0 && min == 0) { 200 removePreference(group, exposure.getKey()); 201 return; 202 } 203 float step = mParameters.getExposureCompensationStep(); 204 205 // show only integer values for exposure compensation 206 int maxValue = (int) Math.floor(max * step); 207 int minValue = (int) Math.ceil(min * step); 208 CharSequence entries[] = new CharSequence[maxValue - minValue + 1]; 209 CharSequence entryValues[] = new CharSequence[maxValue - minValue + 1]; 210 for (int i = minValue; i <= maxValue; ++i) { 211 entryValues[maxValue - i] = Integer.toString(Math.round(i / step)); 212 StringBuilder builder = new StringBuilder(); 213 if (i > 0) builder.append('+'); 214 entries[maxValue - i] = builder.append(i).toString(); 215 } 216 exposure.setEntries(entries); 217 exposure.setEntryValues(entryValues); 218 } 219 220 private static boolean removePreference(PreferenceGroup group, String key) { 221 for (int i = 0, n = group.size(); i < n; i++) { 222 CameraPreference child = group.get(i); 223 if (child instanceof PreferenceGroup) { 224 if (removePreference((PreferenceGroup) child, key)) { 225 return true; 226 } 227 } 228 if (child instanceof ListPreference && 229 ((ListPreference) child).getKey().equals(key)) { 230 group.removePreference(i); 231 return true; 232 } 233 } 234 return false; 235 } 236 237 private void filterUnsupportedOptions(PreferenceGroup group, 238 ListPreference pref, List<String> supported) { 239 240 CharSequence[] allEntries = pref.getEntries(); 241 242 // Remove the preference if the parameter is not supported or there is 243 // only one options for the settings. 244 if (supported == null || supported.size() <= 1) { 245 removePreference(group, pref.getKey()); 246 return; 247 } 248 249 pref.filterUnsupported(supported); 250 251 // Set the value to the first entry if it is invalid. 252 String value = pref.getValue(); 253 if (pref.findIndexOfValue(value) == NOT_FOUND) { 254 pref.setValueIndex(0); 255 } 256 } 257 258 private static List<String> sizeListToStringList(List<Size> sizes) { 259 ArrayList<String> list = new ArrayList<String>(); 260 for (Size size : sizes) { 261 list.add(String.format("%dx%d", size.width, size.height)); 262 } 263 return list; 264 } 265 266 public static void upgradePreferences(SharedPreferences pref) { 267 int version; 268 try { 269 version = pref.getInt(KEY_VERSION, 0); 270 } catch (Exception ex) { 271 version = 0; 272 } 273 if (version == CURRENT_VERSION) return; 274 275 SharedPreferences.Editor editor = pref.edit(); 276 if (version == 0) { 277 // We won't use the preference which change in version 1. 278 // So, just upgrade to version 1 directly 279 version = 1; 280 } 281 if (version == 1) { 282 // Change jpeg quality {65,75,85} to {normal,fine,superfine} 283 String quality = pref.getString(KEY_JPEG_QUALITY, "85"); 284 if (quality.equals("65")) { 285 quality = "normal"; 286 } else if (quality.equals("75")) { 287 quality = "fine"; 288 } else { 289 quality = "superfine"; 290 } 291 editor.putString(KEY_JPEG_QUALITY, quality); 292 version = 2; 293 } 294 if (version == 2) { 295 editor.putString(KEY_RECORD_LOCATION, 296 pref.getBoolean(KEY_RECORD_LOCATION, false) 297 ? RecordLocationPreference.VALUE_ON 298 : RecordLocationPreference.VALUE_NONE); 299 version = 3; 300 } 301 if (version == 3) { 302 // Just use video quality to replace it and 303 // ignore the current settings. 304 editor.remove("pref_camera_videoquality_key"); 305 editor.remove("pref_camera_video_duration_key"); 306 } 307 editor.putInt(KEY_VERSION, CURRENT_VERSION); 308 editor.commit(); 309 } 310 311 public static boolean getVideoQuality(String quality) { 312 return VIDEO_QUALITY_YOUTUBE.equals( 313 quality) || VIDEO_QUALITY_HIGH.equals(quality); 314 } 315 316 public static int getVidoeDurationInMillis(String quality) { 317 if (VIDEO_QUALITY_MMS.equals(quality)) { 318 return MMS_VIDEO_DURATION * 1000; 319 } else if (VIDEO_QUALITY_YOUTUBE.equals(quality)) { 320 return YOUTUBE_VIDEO_DURATION * 1000; 321 } 322 return DEFAULT_VIDEO_DURATION * 1000; 323 } 324 } 325
