| package com.android.camera; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.graphics.drawable.Drawable; |
| import android.hardware.Camera.Parameters; |
| import android.hardware.Camera.Size; |
| import android.os.SystemProperties; |
| import android.preference.ListPreference; |
| import android.preference.Preference; |
| import android.preference.PreferenceGroup; |
| import android.preference.PreferenceManager; |
| import android.preference.PreferenceScreen; |
| import android.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class CameraSettings { |
| private static final int FIRST_REQUEST_CODE = 100; |
| private static final int NOT_FOUND = -1; |
| |
| public static final String KEY_VERSION = "pref_version_key"; |
| public static final String KEY_RECORD_LOCATION = |
| "pref_camera_recordlocation_key"; |
| public static final String KEY_VIDEO_QUALITY = |
| "pref_camera_videoquality_key"; |
| public static final String KEY_VIDEO_DURATION = |
| "pref_camera_video_duration_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_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 int CURRENT_VERSION = 1; |
| |
| // max mms video duration in seconds. |
| public static final int MMS_VIDEO_DURATION = |
| SystemProperties.getInt("ro.media.enc.lprof.duration", 60); |
| |
| public static final boolean DEFAULT_VIDEO_QUALITY_VALUE = true; |
| |
| // 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; |
| private final PreferenceManager mManager; |
| |
| public CameraSettings(Activity activity, Parameters parameters) { |
| mContext = activity; |
| mParameters = parameters; |
| mManager = new PreferenceManager(activity, FIRST_REQUEST_CODE); |
| } |
| |
| public PreferenceScreen getPreferenceScreen(int preferenceRes) { |
| PreferenceScreen screen = mManager.createPreferenceScreen(mContext); |
| mManager.inflateFromResource(mContext, preferenceRes, screen); |
| initPreference(screen); |
| return screen; |
| } |
| |
| 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; |
| } |
| } |
| } |
| |
| public static void removePreferenceFromScreen( |
| PreferenceScreen screen, String key) { |
| Preference pref = screen.findPreference(key); |
| if (pref == null) { |
| Log.i(TAG, "No preference found based the key : " + key); |
| throw new IllegalArgumentException(); |
| } else { |
| removePreference(screen, pref); |
| } |
| } |
| |
| 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(PreferenceScreen screen) { |
| ListPreference videoDuration = |
| (ListPreference) screen.findPreference(KEY_VIDEO_DURATION); |
| ListPreference pictureSize = |
| (ListPreference) screen.findPreference(KEY_PICTURE_SIZE); |
| ListPreference whiteBalance = |
| (ListPreference) screen.findPreference(KEY_WHITE_BALANCE); |
| ListPreference colorEffect = |
| (ListPreference) screen.findPreference(KEY_COLOR_EFFECT); |
| ListPreference sceneMode = |
| (ListPreference) screen.findPreference(KEY_SCENE_MODE); |
| ListPreference flashMode = |
| (ListPreference) screen.findPreference(KEY_FLASH_MODE); |
| ListPreference focusMode = |
| (ListPreference) screen.findPreference(KEY_FOCUS_MODE); |
| |
| // Since the screen could be loaded from different resources, we need |
| // to check if the preference is available here |
| if (videoDuration != 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 = videoDuration.getEntries(); |
| entries[0] = String.format( |
| entries[0].toString(), MMS_VIDEO_DURATION); |
| } |
| |
| // Filter out unsupported settings / options |
| if (pictureSize != null) { |
| filterUnsupportedOptions(screen, pictureSize, sizeListToStringList( |
| mParameters.getSupportedPictureSizes())); |
| } |
| if (whiteBalance != null) { |
| filterUnsupportedOptions(screen, |
| whiteBalance, mParameters.getSupportedWhiteBalance()); |
| } |
| if (colorEffect != null) { |
| filterUnsupportedOptions(screen, |
| colorEffect, mParameters.getSupportedColorEffects()); |
| } |
| if (sceneMode != null) { |
| filterUnsupportedOptions(screen, |
| sceneMode, mParameters.getSupportedSceneModes()); |
| } |
| if (flashMode != null) { |
| filterUnsupportedOptions(screen, |
| flashMode, mParameters.getSupportedFlashModes()); |
| } |
| if (focusMode != null) { |
| filterUnsupportedOptions(screen, |
| focusMode, mParameters.getSupportedFocusModes()); |
| } |
| } |
| |
| private static boolean removePreference(PreferenceGroup group, |
| Preference remove) { |
| if (group.removePreference(remove)) return true; |
| |
| for (int i = 0; i < group.getPreferenceCount(); i++) { |
| final Preference child = group.getPreference(i); |
| if (child instanceof PreferenceGroup) { |
| if (removePreference((PreferenceGroup) child, remove)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| private void filterUnsupportedOptions(PreferenceScreen screen, |
| 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(screen, pref); |
| return; |
| } |
| |
| CharSequence[] allEntryValues = pref.getEntryValues(); |
| Drawable[] allIcons = (pref instanceof IconListPreference) |
| ? ((IconListPreference) pref).getIcons() |
| : null; |
| ArrayList<CharSequence> entries = new ArrayList<CharSequence>(); |
| ArrayList<CharSequence> entryValues = new ArrayList<CharSequence>(); |
| ArrayList<Drawable> icons = |
| allIcons == null ? null : new ArrayList<Drawable>(); |
| for (int i = 0, len = allEntryValues.length; i < len; i++) { |
| if (supported.indexOf(allEntryValues[i].toString()) != NOT_FOUND) { |
| entries.add(allEntries[i]); |
| entryValues.add(allEntryValues[i]); |
| if (allIcons != null) icons.add(allIcons[i]); |
| } |
| } |
| |
| // Set entries and entry values to list preference. |
| int size = entries.size(); |
| pref.setEntries(entries.toArray(new CharSequence[size])); |
| pref.setEntryValues(entryValues.toArray(new CharSequence[size])); |
| if (allIcons != null) { |
| ((IconListPreference) pref) |
| .setIcons(icons.toArray(new Drawable[size])); |
| } |
| |
| // 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) { |
| // For old version, change 1 to 10 for video duration preference. |
| if (pref.getString(KEY_VIDEO_DURATION, "1").equals("1")) { |
| editor.putString(KEY_VIDEO_DURATION, "10"); |
| } |
| } |
| editor.putInt(KEY_VERSION, CURRENT_VERSION); |
| editor.commit(); |
| } |
| } |
