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/*
* 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.content.SharedPreferences.Editor;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import android.media.CamcorderProfile;
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_LOCAL_VERSION = "pref_local_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_VIDEO_TIME_LAPSE_FRAME_INTERVAL = "pref_video_time_lapse_frame_interval_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_WHITE_BALANCE = "pref_camera_whitebalance_key";
public static final String KEY_SCENE_MODE = "pref_camera_scenemode_key";
public static final String KEY_EXPOSURE = "pref_camera_exposure_key";
public static final String KEY_VIDEO_EFFECT = "pref_video_effect_key";
public static final String KEY_CAMERA_ID = "pref_camera_id_key";
public static final String KEY_TAP_TO_FOCUS_PROMPT_SHOWN = "pref_tap_to_focus_prompt_shown_key";
public static final String EXPOSURE_DEFAULT_VALUE = "0";
public static final int CURRENT_VERSION = 5;
public static final int CURRENT_LOCAL_VERSION = 2;
public static final int DEFAULT_VIDEO_DURATION = 0; // no limit
private static final String TAG = "CameraSettings";
private final Context mContext;
private final Parameters mParameters;
private final CameraInfo[] mCameraInfo;
private final int mCameraId;
public CameraSettings(Activity activity, Parameters parameters,
int cameraId, CameraInfo[] cameraInfo) {
mContext = activity;
mParameters = parameters;
mCameraId = cameraId;
mCameraInfo = cameraInfo;
}
public PreferenceGroup getPreferenceGroup(int preferenceRes) {
PreferenceInflater inflater = new PreferenceInflater(mContext);
PreferenceGroup group =
(PreferenceGroup) inflater.inflate(preferenceRes);
initPreference(group);
return group;
}
public static String getDefaultVideoQuality(int cameraId,
String defaultQuality) {
int quality = Integer.valueOf(defaultQuality);
if (CamcorderProfile.hasProfile(cameraId, quality)) {
return defaultQuality;
}
return Integer.toString(CamcorderProfile.QUALITY_HIGH);
}
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 = ComboPreferences
.get(context).edit();
editor.putString(KEY_PICTURE_SIZE, candidate);
editor.apply();
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 timeLapseInterval = group.findPreference(KEY_VIDEO_TIME_LAPSE_FRAME_INTERVAL);
ListPreference pictureSize = group.findPreference(KEY_PICTURE_SIZE);
ListPreference whiteBalance = group.findPreference(KEY_WHITE_BALANCE);
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);
IconListPreference cameraIdPref =
(IconListPreference) group.findPreference(KEY_CAMERA_ID);
ListPreference videoFlashMode =
group.findPreference(KEY_VIDEOCAMERA_FLASH_MODE);
ListPreference videoEffect = group.findPreference(KEY_VIDEO_EFFECT);
// Since the screen could be loaded from different resources, we need
// to check if the preference is available here
if (videoQuality != null) {
filterUnsupportedOptions(group, videoQuality, getSupportedVideoQuality());
}
if (pictureSize != null) {
filterUnsupportedOptions(group, pictureSize, sizeListToStringList(
mParameters.getSupportedPictureSizes()));
}
if (whiteBalance != null) {
filterUnsupportedOptions(group,
whiteBalance, mParameters.getSupportedWhiteBalance());
}
if (sceneMode != null) {
filterUnsupportedOptions(group,
sceneMode, mParameters.getSupportedSceneModes());
}
if (flashMode != null) {
filterUnsupportedOptions(group,
flashMode, mParameters.getSupportedFlashModes());
}
if (focusMode != null) {
if (mParameters.getMaxNumFocusAreas() == 0) {
filterUnsupportedOptions(group,
focusMode, mParameters.getSupportedFocusModes());
} else {
// Remove the focus mode if we can use tap-to-focus.
removePreference(group, focusMode.getKey());
}
}
if (videoFlashMode != null) {
filterUnsupportedOptions(group,
videoFlashMode, mParameters.getSupportedFlashModes());
}
if (exposure != null) buildExposureCompensation(group, exposure);
if (cameraIdPref != null) buildCameraId(group, cameraIdPref);
if (timeLapseInterval != null) resetIfInvalid(timeLapseInterval);
if (videoEffect != null) {
initVideoEffect(group, videoEffect);
resetIfInvalid(videoEffect);
}
}
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 void buildCameraId(
PreferenceGroup group, IconListPreference preference) {
int numOfCameras = mCameraInfo.length;
if (numOfCameras < 2) {
removePreference(group, preference.getKey());
return;
}
CharSequence[] entryValues = new CharSequence[2];
for (int i = 0; i < mCameraInfo.length; ++i) {
int index =
(mCameraInfo[i].facing == CameraInfo.CAMERA_FACING_FRONT)
? CameraInfo.CAMERA_FACING_FRONT
: CameraInfo.CAMERA_FACING_BACK;
if (entryValues[index] == null) {
entryValues[index] = "" + i;
if (entryValues[((index == 1) ? 0 : 1)] != null) break;
}
}
preference.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) {
// 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);
if (pref.getEntries().length <= 1) {
removePreference(group, pref.getKey());
return;
}
resetIfInvalid(pref);
}
private void resetIfInvalid(ListPreference pref) {
// 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 upgradeLocalPreferences(SharedPreferences pref) {
int version;
try {
version = pref.getInt(KEY_LOCAL_VERSION, 0);
} catch (Exception ex) {
version = 0;
}
if (version == CURRENT_LOCAL_VERSION) return;
SharedPreferences.Editor editor = pref.edit();
if (version == 1) {
// We use numbers to represent the quality now. The quality definition is identical to
// that of CamcorderProfile.java.
editor.remove("pref_video_quality_key");
}
editor.putInt(KEY_LOCAL_VERSION, CURRENT_LOCAL_VERSION);
editor.apply();
}
public static void upgradeGlobalPreferences(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.apply();
}
public static int readPreferredCameraId(SharedPreferences pref) {
return Integer.parseInt(pref.getString(KEY_CAMERA_ID, "0"));
}
public static void writePreferredCameraId(SharedPreferences pref,
int cameraId) {
Editor editor = pref.edit();
editor.putString(KEY_CAMERA_ID, Integer.toString(cameraId));
editor.apply();
}
public static int readExposure(ComboPreferences preferences) {
String exposure = preferences.getString(
CameraSettings.KEY_EXPOSURE,
EXPOSURE_DEFAULT_VALUE);
try {
return Integer.parseInt(exposure);
} catch (Exception ex) {
Log.e(TAG, "Invalid exposure: " + exposure);
}
return 0;
}
public static int readEffectType(SharedPreferences pref) {
String effectSelection = pref.getString(KEY_VIDEO_EFFECT, "none");
if (effectSelection.equals("none")) {
return EffectsRecorder.EFFECT_NONE;
} else if (effectSelection.startsWith("goofy_face")) {
return EffectsRecorder.EFFECT_GOOFY_FACE;
} else if (effectSelection.startsWith("backdropper")) {
return EffectsRecorder.EFFECT_BACKDROPPER;
}
Log.e(TAG, "Invalid effect selection: " + effectSelection);
return EffectsRecorder.EFFECT_NONE;
}
public static Object readEffectParameter(SharedPreferences pref) {
String effectSelection = pref.getString(KEY_VIDEO_EFFECT, "none");
if (effectSelection.equals("none")) {
return null;
}
int separatorIndex = effectSelection.indexOf('/');
String effectParameter =
effectSelection.substring(separatorIndex + 1);
if (effectSelection.startsWith("goofy_face")) {
if (effectParameter.equals("squeeze")) {
return EffectsRecorder.EFFECT_GF_SQUEEZE;
} else if (effectParameter.equals("big_eyes")) {
return EffectsRecorder.EFFECT_GF_BIG_EYES;
} else if (effectParameter.equals("big_mouth")) {
return EffectsRecorder.EFFECT_GF_BIG_MOUTH;
} else if (effectParameter.equals("small_mouth")) {
return EffectsRecorder.EFFECT_GF_SMALL_MOUTH;
} else if (effectParameter.equals("big_nose")) {
return EffectsRecorder.EFFECT_GF_BIG_NOSE;
} else if (effectParameter.equals("small_eyes")) {
return EffectsRecorder.EFFECT_GF_SMALL_EYES;
}
} else if (effectSelection.startsWith("backdropper")) {
// Parameter is a string that either encodes the URI to use,
// or specifies 'gallery'.
return effectParameter;
}
Log.e(TAG, "Invalid effect selection: " + effectSelection);
return null;
}
public static void restorePreferences(Context context,
ComboPreferences preferences, Parameters parameters) {
int currentCameraId = readPreferredCameraId(preferences);
// Clear the preferences of both cameras.
int backCameraId = CameraHolder.instance().getBackCameraId();
if (backCameraId != -1) {
preferences.setLocalId(context, backCameraId);
Editor editor = preferences.edit();
editor.clear();
editor.apply();
}
int frontCameraId = CameraHolder.instance().getFrontCameraId();
if (frontCameraId != -1) {
preferences.setLocalId(context, frontCameraId);
Editor editor = preferences.edit();
editor.clear();
editor.apply();
}
// Switch back to the preferences of the current camera. Otherwise,
// we may write the preference to wrong camera later.
preferences.setLocalId(context, currentCameraId);
upgradeGlobalPreferences(preferences.getGlobal());
upgradeLocalPreferences(preferences.getLocal());
// Write back the current camera id because parameters are related to
// the camera. Otherwise, we may switch to the front camera but the
// initial picture size is that of the back camera.
initialCameraPictureSize(context, parameters);
writePreferredCameraId(preferences, currentCameraId);
}
private ArrayList<String> getSupportedVideoQuality() {
ArrayList<String> supported = new ArrayList<String>();
// Check for supported quality
if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_1080P)) {
supported.add(Integer.toString(CamcorderProfile.QUALITY_1080P));
}
if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_720P)) {
supported.add(Integer.toString(CamcorderProfile.QUALITY_720P));
}
if (CamcorderProfile.hasProfile(mCameraId, CamcorderProfile.QUALITY_480P)) {
supported.add(Integer.toString(CamcorderProfile.QUALITY_480P));
}
return supported;
}
private void initVideoEffect(PreferenceGroup group, ListPreference videoEffect) {
CharSequence[] values = videoEffect.getEntryValues();
boolean goofyFaceSupported =
EffectsRecorder.isEffectSupported(EffectsRecorder.EFFECT_GOOFY_FACE);
boolean backdropperSupported =
EffectsRecorder.isEffectSupported(EffectsRecorder.EFFECT_BACKDROPPER) &&
mParameters.isAutoExposureLockSupported() &&
mParameters.isAutoWhiteBalanceLockSupported();
ArrayList<String> supported = new ArrayList<String>();
for (CharSequence value : values) {
String effectSelection = value.toString();
if (!goofyFaceSupported && effectSelection.startsWith("goofy_face")) continue;
if (!backdropperSupported && effectSelection.startsWith("backdropper")) continue;
supported.add(effectSelection);
}
filterUnsupportedOptions(group, videoEffect, supported);
}
}