1 /* 2 * Copyright 2017 Google Inc. All Rights Reserved. 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 #ifndef C_ARCORE_HELLOE_AR_JNI_INTERFACE_H_ 18 #define C_ARCORE_HELLOE_AR_JNI_INTERFACE_H_ 19 20 #include <jni.h> 21 /** 22 * Helper functions to provide access to Java from C via JNI. 23 */ 24 extern "C" { 25 26 // Helper function used to access the jni environment on the current thread. 27 // In this sample, no consideration is made for detaching the thread when the 28 // thread exits. This can cause memory leaks, so production applications should 29 // detach when the thread no longer needs access to the JVM. 30 JNIEnv *GetJniEnv(); 31 32 jclass FindClass(const char *classname); 33 } // extern "C" 34 #endif 35