| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.camera; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.hardware.Camera.Parameters; |
| import android.hardware.Camera.Size; |
| import android.media.CamcorderProfile; |
| import android.preference.PreferenceManager; |
| import android.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Provides utilities and keys for Camera settings. |
| */ |
| public class CameraSettings { |
| private static final int NOT_FOUND = -1; |
| |
| public static final String KEY_VERSION = "pref_version_key"; |
| public static final String KEY_RECORD_LOCATION = RecordLocationPreference.KEY; |
| public static final String KEY_VIDEO_QUALITY = "pref_video_quality_key"; |
| public static final String KEY_PICTURE_SIZE = "pref_camera_picturesize_key"; |
| public static final String KEY_JPEG_QUALITY = "pref_camera_jpegquality_key"; |
| public static final String KEY_FOCUS_MODE = "pref_camera_focusmode_key"; |
| public static final String KEY_FLASH_MODE = "pref_camera_flashmode_key"; |
| public static final String KEY_VIDEOCAMERA_FLASH_MODE = "pref_camera_video_flashmode_key"; |
| public static final String KEY_COLOR_EFFECT = "pref_camera_coloreffect_key"; |
| public static final String KEY_WHITE_BALANCE = "pref_camera_whitebalance_key"; |
| public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key"; |
| public static final String KEY_QUICK_CAPTURE = "pref_camera_quickcapture_key"; |
| public static final String KEY_EXPOSURE = "pref_camera_exposure_key"; |
| public static final String KEY_METERING_MODE = "pref_camera_meteringmode_key"; |
| public static final String KEY_CAMERA_ID = "pref_camera_id"; |
| |
| public static final String QUICK_CAPTURE_ON = "on"; |
| public static final String QUICK_CAPTURE_OFF = "off"; |
| |
| private static final String VIDEO_QUALITY_HIGH = "high"; |
| private static final String VIDEO_QUALITY_MMS = "mms"; |
| private static final String VIDEO_QUALITY_YOUTUBE = "youtube"; |
| |
| public static final String EXPOSURE_DEFAULT_VALUE = "0"; |
| |
| public static final int CURRENT_VERSION = 4; |
| |
| // max video duration in seconds for mms and youtube. |
| private static final int MMS_VIDEO_DURATION = CamcorderProfile.get(CamcorderProfile.QUALITY_LOW).duration; |
| private static final int YOUTUBE_VIDEO_DURATION = 10 * 60; // 10 mins |
| private static final int DEFAULT_VIDEO_DURATION = 30 * 60; // 10 mins |
| |
| public static final String DEFAULT_VIDEO_QUALITY_VALUE = "high"; |
| |
| // MMS video length |
| public static final int DEFAULT_VIDEO_DURATION_VALUE = -1; |
| |
| @SuppressWarnings("unused") |
| private static final String TAG = "CameraSettings"; |
| |
| private final Context mContext; |
| private final Parameters mParameters; |
| |
| public CameraSettings(Activity activity, Parameters parameters) { |
| mContext = activity; |
| mParameters = parameters; |
| } |
| |
| public PreferenceGroup getPreferenceGroup(int preferenceRes) { |
| PreferenceInflater inflater = new PreferenceInflater(mContext); |
| PreferenceGroup group = |
| (PreferenceGroup) inflater.inflate(preferenceRes); |
| initPreference(group); |
| return group; |
| } |
| |
| public static void initialCameraPictureSize( |
| Context context, Parameters parameters) { |
| // When launching the camera app first time, we will set the picture |
| // size to the first one in the list defined in "arrays.xml" and is also |
| // supported by the driver. |
| List<Size> supported = parameters.getSupportedPictureSizes(); |
| if (supported == null) return; |
| for (String candidate : context.getResources().getStringArray( |
| R.array.pref_camera_picturesize_entryvalues)) { |
| if (setCameraPictureSize(candidate, supported, parameters)) { |
| SharedPreferences.Editor editor = PreferenceManager |
| .getDefaultSharedPreferences(context).edit(); |
| editor.putString(KEY_PICTURE_SIZE, candidate); |
| editor.commit(); |
| return; |
| } |
| } |
| Log.e(TAG, "No supported picture size found"); |
| } |
| |
| public static void removePreferenceFromScreen( |
| PreferenceGroup group, String key) { |
| removePreference(group, key); |
| } |
| |
| public static boolean setCameraPictureSize( |
| String candidate, List<Size> supported, Parameters parameters) { |
| int index = candidate.indexOf('x'); |
| if (index == NOT_FOUND) return false; |
| int width = Integer.parseInt(candidate.substring(0, index)); |
| int height = Integer.parseInt(candidate.substring(index + 1)); |
| for (Size size: supported) { |
| if (size.width == width && size.height == height) { |
| parameters.setPictureSize(width, height); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void initPreference(PreferenceGroup group) { |
| ListPreference videoQuality = group.findPreference(KEY_VIDEO_QUALITY); |
| ListPreference pictureSize = group.findPreference(KEY_PICTURE_SIZE); |
| ListPreference whiteBalance = group.findPreference(KEY_WHITE_BALANCE); |
| ListPreference colorEffect = group.findPreference(KEY_COLOR_EFFECT); |
| ListPreference sceneMode = group.findPreference(KEY_SCENE_MODE); |
| ListPreference flashMode = group.findPreference(KEY_FLASH_MODE); |
| ListPreference focusMode = group.findPreference(KEY_FOCUS_MODE); |
| ListPreference exposure = group.findPreference(KEY_EXPOSURE); |
| ListPreference videoFlashMode = |
| group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE); |
| ListPreference meteringMode = |
| group.findPreference(KEY_METERING_MODE); |
| |
| // Since the screen could be loaded from different resources, we need |
| // to check if the preference is available here |
| if (videoQuality != null) { |
| // Modify video duration settings. |
| // The first entry is for MMS video duration, and we need to fill |
| // in the device-dependent value (in seconds). |
| CharSequence[] entries = videoQuality.getEntries(); |
| CharSequence[] values = videoQuality.getEntryValues(); |
| for (int i = 0; i < entries.length; ++i) { |
| if (VIDEO_QUALITY_MMS.equals(values[i])) { |
| entries[i] = entries[i].toString().replace( |
| "30", Integer.toString(MMS_VIDEO_DURATION)); |
| break; |
| } |
| } |
| } |
| |
| // Filter out unsupported settings / options |
| if (pictureSize != null) { |
| filterUnsupportedOptions(group, pictureSize, sizeListToStringList( |
| mParameters.getSupportedPictureSizes())); |
| } |
| if (whiteBalance != null) { |
| filterUnsupportedOptions(group, |
| whiteBalance, mParameters.getSupportedWhiteBalance()); |
| } |
| if (colorEffect != null) { |
| filterUnsupportedOptions(group, |
| colorEffect, mParameters.getSupportedColorEffects()); |
| } |
| if (sceneMode != null) { |
| filterUnsupportedOptions(group, |
| sceneMode, mParameters.getSupportedSceneModes()); |
| } |
| if (flashMode != null) { |
| filterUnsupportedOptions(group, |
| flashMode, mParameters.getSupportedFlashModes()); |
| } |
| if (focusMode != null) { |
| filterUnsupportedOptions(group, |
| focusMode, mParameters.getSupportedFocusModes()); |
| } |
| if (videoFlashMode != null) { |
| filterUnsupportedOptions(group, |
| videoFlashMode, mParameters.getSupportedFlashModes()); |
| } |
| if (meteringMode != null) { |
| filterUnsupportedOptions(group, |
| meteringMode, mParameters.getSupportedMeteringModes()); |
| } |
| |
| if (exposure != null) { |
| buildExposureCompensation(group, exposure); |
| } |
| } |
| |
| private void buildExposureCompensation( |
| PreferenceGroup group, ListPreference exposure) { |
| int max = mParameters.getMaxExposureCompensation(); |
| int min = mParameters.getMinExposureCompensation(); |
| if (max == 0 && min == 0) { |
| removePreference(group, exposure.getKey()); |
| return; |
| } |
| float step = mParameters.getExposureCompensationStep(); |
| |
| // show only integer values for exposure compensation |
| int maxValue = (int) Math.floor(max * step); |
| int minValue = (int) Math.ceil(min * step); |
| CharSequence entries[] = new CharSequence[maxValue - minValue + 1]; |
| CharSequence entryValues[] = new CharSequence[maxValue - minValue + 1]; |
| for (int i = minValue; i <= maxValue; ++i) { |
| entryValues[maxValue - i] = Integer.toString(Math.round(i / step)); |
| StringBuilder builder = new StringBuilder(); |
| if (i > 0) builder.append('+'); |
| entries[maxValue - i] = builder.append(i).toString(); |
| } |
| exposure.setEntries(entries); |
| exposure.setEntryValues(entryValues); |
| } |
| |
| private static boolean removePreference(PreferenceGroup group, String key) { |
| for (int i = 0, n = group.size(); i < n; i++) { |
| CameraPreference child = group.get(i); |
| if (child instanceof PreferenceGroup) { |
| if (removePreference((PreferenceGroup) child, key)) { |
| return true; |
| } |
| } |
| if (child instanceof ListPreference && |
| ((ListPreference) child).getKey().equals(key)) { |
| group.removePreference(i); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void filterUnsupportedOptions(PreferenceGroup group, |
| ListPreference pref, List<String> supported) { |
| |
| CharSequence[] allEntries = pref.getEntries(); |
| |
| // Remove the preference if the parameter is not supported or there is |
| // only one options for the settings. |
| if (supported == null || supported.size() <= 1) { |
| removePreference(group, pref.getKey()); |
| return; |
| } |
| |
| pref.filterUnsupported(supported); |
| |
| // Set the value to the first entry if it is invalid. |
| String value = pref.getValue(); |
| if (pref.findIndexOfValue(value) == NOT_FOUND) { |
| pref.setValueIndex(0); |
| } |
| } |
| |
| private static List<String> sizeListToStringList(List<Size> sizes) { |
| ArrayList<String> list = new ArrayList<String>(); |
| for (Size size : sizes) { |
| list.add(String.format("%dx%d", size.width, size.height)); |
| } |
| return list; |
| } |
| |
| public static void upgradePreferences(SharedPreferences pref) { |
| int version; |
| try { |
| version = pref.getInt(KEY_VERSION, 0); |
| } catch (Exception ex) { |
| version = 0; |
| } |
| if (version == CURRENT_VERSION) return; |
| |
| SharedPreferences.Editor editor = pref.edit(); |
| if (version == 0) { |
| // We won't use the preference which change in version 1. |
| // So, just upgrade to version 1 directly |
| version = 1; |
| } |
| if (version == 1) { |
| // Change jpeg quality {65,75,85} to {normal,fine,superfine} |
| String quality = pref.getString(KEY_JPEG_QUALITY, "85"); |
| if (quality.equals("65")) { |
| quality = "normal"; |
| } else if (quality.equals("75")) { |
| quality = "fine"; |
| } else { |
| quality = "superfine"; |
| } |
| editor.putString(KEY_JPEG_QUALITY, quality); |
| version = 2; |
| } |
| if (version == 2) { |
| editor.putString(KEY_RECORD_LOCATION, |
| pref.getBoolean(KEY_RECORD_LOCATION, false) |
| ? RecordLocationPreference.VALUE_ON |
| : RecordLocationPreference.VALUE_NONE); |
| version = 3; |
| } |
| if (version == 3) { |
| // Just use video quality to replace it and |
| // ignore the current settings. |
| editor.remove("pref_camera_videoquality_key"); |
| editor.remove("pref_camera_video_duration_key"); |
| } |
| editor.putInt(KEY_VERSION, CURRENT_VERSION); |
| editor.commit(); |
| } |
| |
| public static boolean getVideoQuality(String quality) { |
| return VIDEO_QUALITY_YOUTUBE.equals( |
| quality) || VIDEO_QUALITY_HIGH.equals(quality); |
| } |
| |
| public static int getVidoeDurationInMillis(String quality) { |
| if (VIDEO_QUALITY_MMS.equals(quality)) { |
| return MMS_VIDEO_DURATION * 1000; |
| } else if (VIDEO_QUALITY_YOUTUBE.equals(quality)) { |
| return YOUTUBE_VIDEO_DURATION * 1000; |
| } |
| return DEFAULT_VIDEO_DURATION * 1000; |
| } |
| |
| public static int readPreferredCameraId(Context context) { |
| SharedPreferences pref = |
| PreferenceManager.getDefaultSharedPreferences(context); |
| return pref.getInt(KEY_CAMERA_ID, 0); |
| } |
| |
| public static void writePreferredCameraId(Context context, int cameraId) { |
| SharedPreferences.Editor editor = PreferenceManager |
| .getDefaultSharedPreferences(context).edit(); |
| editor.putInt(KEY_CAMERA_ID, cameraId); |
| editor.commit(); |
| } |
| } |
