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/*
* Copyright (C) 2019 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.server.wm;
import static android.hardware.display.DisplayManager.DeviceConfig.KEY_HIGH_REFRESH_RATE_BLACKLIST;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.res.Resources;
import android.provider.DeviceConfig;
import android.util.ArraySet;
import com.android.internal.R;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.os.BackgroundThread;
import java.io.PrintWriter;
import java.util.concurrent.Executor;
/**
* A Blacklist for packages that should force the display out of high refresh rate.
*/
class HighRefreshRateBlacklist {
private final ArraySet<String> mBlacklistedPackages = new ArraySet<>();
@NonNull
private final String[] mDefaultBlacklist;
private final Object mLock = new Object();
static HighRefreshRateBlacklist create(@NonNull Resources r) {
return new HighRefreshRateBlacklist(r, new DeviceConfigInterface() {
@Override
public @Nullable String getProperty(@NonNull String namespace, @NonNull String name) {
return DeviceConfig.getProperty(namespace, name);
}
public void addOnPropertyChangedListener(@NonNull String namespace,
@NonNull Executor executor,
@NonNull DeviceConfig.OnPropertyChangedListener listener) {
DeviceConfig.addOnPropertyChangedListener(namespace, executor, listener);
}
});
}
@VisibleForTesting
HighRefreshRateBlacklist(Resources r, DeviceConfigInterface deviceConfig) {
mDefaultBlacklist = r.getStringArray(R.array.config_highRefreshRateBlacklist);
deviceConfig.addOnPropertyChangedListener(DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
BackgroundThread.getExecutor(), new OnPropertyChangedListener());
final String property = deviceConfig.getProperty(DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
KEY_HIGH_REFRESH_RATE_BLACKLIST);
updateBlacklist(property);
}
private void updateBlacklist(@Nullable String property) {
synchronized (mLock) {
mBlacklistedPackages.clear();
if (property != null) {
String[] packages = property.split(",");
for (String pkg : packages) {
String pkgName = pkg.trim();
if (!pkgName.isEmpty()) {
mBlacklistedPackages.add(pkgName);
}
}
} else {
// If there's no config, or the config has been deleted, fallback to the device's
// default blacklist
for (String pkg : mDefaultBlacklist) {
mBlacklistedPackages.add(pkg);
}
}
}
}
boolean isBlacklisted(String packageName) {
synchronized (mLock) {
return mBlacklistedPackages.contains(packageName);
}
}
void dump(PrintWriter pw) {
pw.println("High Refresh Rate Blacklist");
pw.println(" Packages:");
synchronized (mLock) {
for (String pkg : mBlacklistedPackages) {
pw.println(" " + pkg);
}
}
}
interface DeviceConfigInterface {
@Nullable String getProperty(@NonNull String namespace, @NonNull String name);
void addOnPropertyChangedListener(@NonNull String namespace, @NonNull Executor executor,
@NonNull DeviceConfig.OnPropertyChangedListener listener);
}
private class OnPropertyChangedListener implements DeviceConfig.OnPropertyChangedListener {
public void onPropertyChanged(@NonNull String namespace, @NonNull String name,
@Nullable String value) {
if (KEY_HIGH_REFRESH_RATE_BLACKLIST.equals(name)) {
updateBlacklist(value);
}
}
}
}
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