60 lines
1.9 KiB
Java
60 lines
1.9 KiB
Java
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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.window;
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import android.annotation.BinderThread;
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import android.annotation.NonNull;
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import android.annotation.SystemApi;
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import android.os.RemoteException;
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/**
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* Callback for sampling the frames per second for a task and its children.
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* This should only be used by a system component that needs to listen to a task's
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* tree's FPS when it is not actively submitting transactions for that corresponding SurfaceControl.
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* Otherwise, ASurfaceTransaction_OnComplete callbacks should be used.
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*
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* Each callback can only register for receiving FPS report for one task id until
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* {@link WindowManager#unregisterTaskFpsCallback()} is called.
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*
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* @hide
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*/
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@SystemApi
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public abstract class TaskFpsCallback {
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/**
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* Reports the fps from the registered task
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* @param fps The frame per second of the task that has the registered task id
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* and its children.
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*/
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public abstract void onFpsReported(float fps);
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/**
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* Dispatch the collected sample.
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*
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* Called from native code on a binder thread.
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*/
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@BinderThread
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private static void dispatchOnFpsReported(
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@NonNull ITaskFpsCallback listener, float fps) {
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try {
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listener.onFpsReported(fps);
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} catch (RemoteException e) {
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/* ignore */
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}
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}
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}
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