settings: Add Camera HAL HDR+ preference

Add an option for camera HAL HDR+ preference to developer options.

Test: System settings, RunSettingsRoboTests
Bug: 62108454
Change-Id: Ide053e8cc3fd7ad6add0493939a27af5bfb65e42

src/com/android/settings/development/CameraHalHdrplusPreferenceController.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2017 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.settings.development;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.widget.Toast;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.R;
+
+public class CameraHalHdrplusPreferenceController extends PreferenceController {
+
+    private static final String KEY_CAMERA_HAL_HDRPLUS_SWITCH = "camera_hal_hdrplus_switch";
+    @VisibleForTesting
+    static final String BUILD_TYPE = "ro.build.type";
+    @VisibleForTesting
+    static final String PROPERTY_CAMERA_HAL_HDRPLUS = "persist.camera.hdrplus.enable";
+    @VisibleForTesting
+    static final String ENABLED = "1";
+    @VisibleForTesting
+    static final String DISABLED = "0";
+
+    private SwitchPreference mPreference;
+
+    public CameraHalHdrplusPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        if (isAvailable()) {
+            mPreference = (SwitchPreference) screen.findPreference(KEY_CAMERA_HAL_HDRPLUS_SWITCH);
+            mPreference.setChecked(isHalHdrplusEnabled());
+        }
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_CAMERA_HAL_HDRPLUS_SWITCH;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return mContext.getResources().getBoolean(R.bool.config_show_camera_hal_hdrplus) &&
+               (SystemProperties.get(BUILD_TYPE).equals("userdebug") ||
+                SystemProperties.get(BUILD_TYPE).equals("eng"));
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updatePreference();
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (KEY_CAMERA_HAL_HDRPLUS_SWITCH.equals(preference.getKey())) {
+            final SwitchPreference switchPreference = (SwitchPreference)preference;
+            SystemProperties.set(PROPERTY_CAMERA_HAL_HDRPLUS,
+                    switchPreference.isChecked() ? ENABLED : DISABLED);
+            Toast.makeText(mContext, R.string.camera_hal_hdrplus_toast,
+                    Toast.LENGTH_LONG).show();
+            return true;
+        }
+        return false;
+    }
+
+    public void enablePreference(boolean enabled) {
+        if (isAvailable()) {
+            mPreference.setEnabled(enabled);
+        }
+    }
+
+    public boolean updatePreference() {
+        if (!isAvailable()) {
+            return false;
+        }
+        final boolean enabled = isHalHdrplusEnabled();
+        mPreference.setChecked(enabled);
+        return enabled;
+    }
+
+    private boolean isHalHdrplusEnabled() {
+        return SystemProperties.getBoolean(PROPERTY_CAMERA_HAL_HDRPLUS, false);
+    }
+}

src/com/android/settings/development/DevelopmentSettings.java

@@ -355,6 +355,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
     private BugReportPreferenceController mBugReportController;
     private BugReportInPowerPreferenceController mBugReportInPowerController;
     private TelephonyMonitorPreferenceController mTelephonyMonitorController;
+    private CameraHalHdrplusPreferenceController mCameraHalHdrplusController;
 
     public DevelopmentSettings() {
         super(UserManager.DISALLOW_DEBUGGING_FEATURES);
@@ -393,6 +394,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         mTelephonyMonitorController = new TelephonyMonitorPreferenceController(getActivity());
         mWebViewAppPrefController = new WebViewAppPreferenceController(getActivity());
         mVerifyAppsOverUsbController = new VerifyAppsOverUsbPreferenceController(getActivity());
+        mCameraHalHdrplusController = new CameraHalHdrplusPreferenceController(getActivity());
 
         setIfOnlyAvailableForAdmins(true);
         if (isUiRestricted() || !Utils.isDeviceProvisioned(getActivity())) {
@@ -425,6 +427,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         mBugReportInPowerController.displayPreference(getPreferenceScreen());
         mTelephonyMonitorController.displayPreference(getPreferenceScreen());
         mWebViewAppPrefController.displayPreference(getPreferenceScreen());
+        mCameraHalHdrplusController.displayPreference(getPreferenceScreen());
 
         mKeepScreenOn = (RestrictedSwitchPreference) findAndInitSwitchPref(KEEP_SCREEN_ON);
         mBtHciSnoopLog = findAndInitSwitchPref(BT_HCI_SNOOP_LOG);
@@ -647,6 +650,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         mBugReportInPowerController.enablePreference(enabled);
         mTelephonyMonitorController.enablePreference(enabled);
         mWebViewAppPrefController.enablePreference(enabled);
+        mCameraHalHdrplusController.enablePreference(enabled);
         updateAllOptions();
     }
 
@@ -765,6 +769,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         }
         mHaveDebugSettings |= mBugReportInPowerController.updatePreference();
         mHaveDebugSettings |= mTelephonyMonitorController.updatePreference();
+        mHaveDebugSettings |= mCameraHalHdrplusController.updatePreference();
         updateSwitchPreference(mKeepScreenOn, Settings.Global.getInt(cr,
                 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0) != 0);
         updateSwitchPreference(mBtHciSnoopLog, SystemProperties.getBoolean(
@@ -2394,6 +2399,10 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
             return true;
         }
 
+        if (mCameraHalHdrplusController.handlePreferenceTreeClick(preference)) {
+            return true;
+        }
+
         if (preference == mEnableAdb) {
             if (mEnableAdb.isChecked()) {
                 mDialogClicked = false;