1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <stdint.h> 20 #include <EGL/egl.h> 21 #include <EGL/eglext.h> 22 #include <jni.h> 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 // swap interval constant helpers 29 #define SWAPPY_SWAP_60FPS (16666667L) 30 #define SWAPPY_SWAP_30FPS (33333333L) 31 #define SWAPPY_SWAP_20FPS (50000000L) 32 33 // Initialize Swappy, getting the required Android parameters from the display subsystem via JNI 34 void Swappy_init(JNIEnv *env, jobject jactivity); 35 36 // Returns true if Swappy was successfully initialized. 37 // Returns false if either the 'swappy.disable' system property is not 'false' 38 // or the required OpenGL extensions are not available for Swappy to work. 39 bool Swappy_isEnabled(); 40 41 // Destroy resources and stop all threads that swappy has created 42 void Swappy_destroy(); 43 44 // Replace calls to eglSwapBuffers with this. Swappy will wait for the previous frame's 45 // buffer to be processed by the GPU before actually calling eglSwapBuffers. 46 bool Swappy_swap(EGLDisplay display, EGLSurface surface); 47 48 // Parameter setters 49 void Swappy_setRefreshPeriod(uint64_t period_ns); 50 void Swappy_setUseAffinity(bool tf); 51 void Swappy_setSwapIntervalNS(uint64_t swap_ns); 52 53 // Parameter getters 54 uint64_t Swappy_getRefreshPeriodNanos(); 55 uint64_t Swappy_getSwapIntervalNS(); 56 bool Swappy_getUseAffinity(); 57 58 #ifdef __cplusplus 59 }; 60 #endif 61
