/*
 * 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 <stdint.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <jni.h>

#ifdef __cplusplus
extern "C" {
#endif

// swap interval constant helpers
#define SWAPPY_SWAP_60FPS (16666667L)
#define SWAPPY_SWAP_30FPS (33333333L)
#define SWAPPY_SWAP_20FPS (50000000L)

// Initialize Swappy, getting the required Android parameters from the display subsystem via JNI
void Swappy_init(JNIEnv *env, jobject jactivity);

// Returns true if Swappy was successfully initialized.
// Returns false if either the 'swappy.disable' system property is not 'false'
//  or the required OpenGL extensions are not available for Swappy to work.
bool Swappy_isEnabled();

// Destroy resources and stop all threads that swappy has created
void Swappy_destroy();

// Replace calls to eglSwapBuffers with this. Swappy will wait for the previous frame's
// buffer to be processed by the GPU before actually calling eglSwapBuffers.
bool Swappy_swap(EGLDisplay display, EGLSurface surface);

// Parameter setters
void Swappy_setRefreshPeriod(uint64_t period_ns);
void Swappy_setUseAffinity(bool tf);
void Swappy_setSwapIntervalNS(uint64_t swap_ns);

// Parameter getters
uint64_t Swappy_getRefreshPeriodNanos();
uint64_t Swappy_getSwapIntervalNS();
bool Swappy_getUseAffinity();

#ifdef __cplusplus
};
#endif