/*

* 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 android.util.ArraySet;

import android.view.Display.Mode;

import android.view.DisplayInfo;

/**

* Policy to select a lower refresh rate for the display if applicable.

*/

class RefreshRatePolicy {

private final int mLowRefreshRateId;

private final ArraySetmNonHighRefreshRatePackages = new ArraySet<>();

private final HighRefreshRateBlacklist mHighRefreshRateBlacklist;

private final WindowManagerService mWmService;

RefreshRatePolicy(WindowManagerService wmService, DisplayInfo displayInfo,

HighRefreshRateBlacklist blacklist) {

mLowRefreshRateId = findLowRefreshRateModeId(displayInfo);

mHighRefreshRateBlacklist = blacklist;

mWmService = wmService;

}

/**

* Finds the mode id with the lowest refresh rate which is >= 60hz and same resolution as the

* default mode.

*/

private int findLowRefreshRateModeId(DisplayInfo displayInfo) {

Mode mode = displayInfo.getDefaultMode();

float[] refreshRates = displayInfo.getDefaultRefreshRates();

float bestRefreshRate = mode.getRefreshRate();

for (int i = refreshRates.length - 1; i >= 0; i--) {

if (refreshRates[i] >= 60f && refreshRates[i] < bestRefreshRate) {

bestRefreshRate = refreshRates[i];

}

}

return displayInfo.findDefaultModeByRefreshRate(bestRefreshRate);

}

void addNonHighRefreshRatePackage(String packageName) {

mNonHighRefreshRatePackages.add(packageName);

mWmService.requestTraversal();

}

void removeNonHighRefreshRatePackage(String packageName) {

mNonHighRefreshRatePackages.remove(packageName);

mWmService.requestTraversal();

}

int getPreferredModeId(WindowState w) {

// If app is animating, it's not able to control refresh rate because we want the animation

// to run in default refresh rate.

if (w.isAnimating()) {

return 0;

}

// If app requests a certain refresh rate or mode, don't override it.

if (w.mAttrs.preferredRefreshRate != 0 || w.mAttrs.preferredDisplayModeId != 0) {

return w.mAttrs.preferredDisplayModeId;

}

final String packageName = w.getOwningPackage();

// If app is using Camera, force it to default (lower) refresh rate.

if (mNonHighRefreshRatePackages.contains(packageName)) {

return mLowRefreshRateId;

}

// If app is blacklisted using higher refresh rate, return default (lower) refresh rate

if (mHighRefreshRateBlacklist.isBlacklisted(packageName)) {

return mLowRefreshRateId;

}

return 0;

}

}

Java程序

|

93行

|

3.28 KB

/*

* 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 android.util.ArraySet;

import android.view.Display.Mode;

import android.view.DisplayInfo;

/**

* Policy to select a lower refresh rate for the display if applicable.

*/

class RefreshRatePolicy {

private final int mLowRefreshRateId;

private final ArraySet mNonHighRefreshRatePackages = new ArraySet<>();

private final HighRefreshRateBlacklist mHighRefreshRateBlacklist;

private final WindowManagerService mWmService;

RefreshRatePolicy(WindowManagerService wmService, DisplayInfo displayInfo,

HighRefreshRateBlacklist blacklist) {

mLowRefreshRateId = findLowRefreshRateModeId(displayInfo);

mHighRefreshRateBlacklist = blacklist;

mWmService = wmService;

}

/**

* Finds the mode id with the lowest refresh rate which is >= 60hz and same resolution as the

* default mode.

*/

private int findLowRefreshRateModeId(DisplayInfo displayInfo) {

Mode mode = displayInfo.getDefaultMode();

float[] refreshRates = displayInfo.getDefaultRefreshRates();

float bestRefreshRate = mode.getRefreshRate();

for (int i = refreshRates.length - 1; i >= 0; i--) {

if (refreshRates[i] >= 60f && refreshRates[i] < bestRefreshRate) {

bestRefreshRate = refreshRates[i];

}

}

return displayInfo.findDefaultModeByRefreshRate(bestRefreshRate);

}

void addNonHighRefreshRatePackage(String packageName) {

mNonHighRefreshRatePackages.add(packageName);

mWmService.requestTraversal();

}

void removeNonHighRefreshRatePackage(String packageName) {

mNonHighRefreshRatePackages.remove(packageName);

mWmService.requestTraversal();

}

int getPreferredModeId(WindowState w) {

// If app is animating, it's not able to control refresh rate because we want the animation

// to run in default refresh rate.

if (w.isAnimating()) {

return 0;

}

// If app requests a certain refresh rate or mode, don't override it.

if (w.mAttrs.preferredRefreshRate != 0 || w.mAttrs.preferredDisplayModeId != 0) {

return w.mAttrs.preferredDisplayModeId;

}

final String packageName = w.getOwningPackage();

// If app is using Camera, force it to default (lower) refresh rate.

if (mNonHighRefreshRatePackages.contains(packageName)) {

return mLowRefreshRateId;

}

// If app is blacklisted using higher refresh rate, return default (lower) refresh rate

if (mHighRefreshRateBlacklist.isBlacklisted(packageName)) {

return mLowRefreshRateId;

}

return 0;

}

}