add toggle for special access to hardware accelerators by Google apps

Author: muhomorr

res/values/strings_ext.xml

@@ -33,4 +33,19 @@
     <string name="remote_provisioning_enabled_standard_server">Enabled; standard server</string>
     <string name="remote_provisioning_disabled">Disabled</string>
 
+    <string name="Google_apps_special_accelerator_access_title">Special access to hardware accelerators for Google apps</string>
+    <string name="Google_apps_special_accelerator_access_summary_granted">Access granted</string>
+    <string name="Google_apps_special_accelerator_access_summary_not_granted">Access not granted</string>
+    <string name="Google_apps_special_accelerator_access_main_switch">Grant special access to hardware accelerators to Google apps</string>
+    <string name="Google_apps_special_accelerator_access_footer">
+"Some Google apps expect to be able to access hardware accelerators in a special, more capable way than regular apps do.
+
+Examples of such apps:
+• Google Camera
+• Google Photos
+• Google Recorder
+
+This setting applies to all users on the device."
+    </string>
+
 </resources>

res/xml/special_access.xml

@@ -167,4 +167,10 @@
         android:key="special_access_more"
         android:title="@string/special_access_more"
         settings:controller="com.android.settings.applications.specialaccess.MoreSpecialAccessPreferenceController" />
+
+    <Preference
+        android:key="Google_apps_special_accelerator_access"
+        android:title="@string/Google_apps_special_accelerator_access_title"
+        android:fragment="com.android.settings.applications.specialaccess.GoogleSpecialAcceleratorAccessFragment"
+        settings:controller="com.android.settings.applications.specialaccess.GoogleSpecialAcceleratorAccessPrefController" />
 </PreferenceScreen>

src/com/android/settings/applications/specialaccess/GoogleSpecialAcceleratorAccessFragment.java

@@ -0,0 +1,46 @@
+package com.android.settings.applications.specialaccess;
+
+import android.app.ActivityThread;
+import android.ext.settings.BoolSetting;
+import android.ext.settings.ExtSettings;
+import android.os.RemoteException;
+
+import com.android.internal.util.GoogleCameraUtils;
+import com.android.settings.R;
+import com.android.settings.ext.BoolSettingFragment;
+import com.android.settingslib.widget.FooterPreference;
+
+public class GoogleSpecialAcceleratorAccessFragment extends BoolSettingFragment {
+    private static final String TAG = GoogleSpecialAcceleratorAccessFragment.class.getSimpleName();
+
+    @Override
+    protected BoolSetting getSetting() {
+        return ExtSettings.ALLOW_GOOGLE_APPS_SPECIAL_ACCESS_TO_ACCELERATORS;
+    }
+
+    @Override
+    protected CharSequence getTitle() {
+        return resText(R.string.Google_apps_special_accelerator_access_title);
+    }
+
+    @Override
+    protected CharSequence getMainSwitchTitle() {
+        return resText(R.string.Google_apps_special_accelerator_access_main_switch);
+    }
+
+    @Override
+    protected void onMainSwitchChanged(boolean state) {
+        if (GoogleCameraUtils.isCustomSeInfoNeededForAccessToAccelerators(requireContext())) {
+            try {
+                ActivityThread.getPackageManager().updateSeInfo(GoogleCameraUtils.PACKAGE_NAME);
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+    }
+
+    @Override
+    protected FooterPreference makeFooterPref(FooterPreference.Builder builder) {
+        return builder.setTitle(R.string.Google_apps_special_accelerator_access_footer).build();
+    }
+}

src/com/android/settings/applications/specialaccess/GoogleSpecialAcceleratorAccessPrefController.java

@@ -0,0 +1,34 @@
+package com.android.settings.applications.specialaccess;
+
+import android.content.Context;
+import android.ext.settings.ExtSettings;
+
+import com.android.settings.R;
+import com.android.settings.ext.BoolSettingFragmentPrefController;
+
+public class GoogleSpecialAcceleratorAccessPrefController extends BoolSettingFragmentPrefController {
+
+    public GoogleSpecialAcceleratorAccessPrefController(Context ctx, String key) {
+        super(ctx, key, ExtSettings.ALLOW_GOOGLE_APPS_SPECIAL_ACCESS_TO_ACCELERATORS);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (!mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_Google_apps_can_have_special_access_to_accelerators)) {
+            return UNSUPPORTED_ON_DEVICE;
+        }
+
+        return super.getAvailabilityStatus();
+    }
+
+    @Override
+    protected CharSequence getSummaryOn() {
+        return resText(R.string.Google_apps_special_accelerator_access_summary_granted);
+    }
+
+    @Override
+    protected CharSequence getSummaryOff() {
+        return resText(R.string.Google_apps_special_accelerator_access_summary_not_granted);
+    }
+}