/*
 * Copyright 2018 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.
 */

#pragma once

#include <android/choreographer.h>

// Declare the types, even if we can't access the functions.
#if __ANDROID_API__ < 24

struct AChoreographer;
typedef struct AChoreographer AChoreographer;

/**
 * Prototype of the function that is called when a new frame is being rendered.
 * It's passed the time that the frame is being rendered as nanoseconds in the
 * CLOCK_MONOTONIC time base, as well as the data pointer provided by the
 * application that registered a callback. All callbacks that run as part of
 * rendering a frame will observe the same frame time, so it should be used
 * whenever events need to be synchronized (e.g. animations).
 */
typedef void (*AChoreographer_frameCallback)(long frameTimeNanos, void* data);

#endif