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      1 /*
      2  * Copyright 2016 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 #define LOG_TAG "GraphicsEnvironment"
     18 
     19 #include <graphicsenv/GraphicsEnv.h>
     20 #include <nativehelper/ScopedUtfChars.h>
     21 #include <nativeloader/native_loader.h>
     22 #include "core_jni_helpers.h"
     23 
     24 namespace {
     25 
     26 void setDriverPath(JNIEnv* env, jobject clazz, jstring path) {
     27     ScopedUtfChars pathChars(env, path);
     28     android::GraphicsEnv::getInstance().setDriverPath(pathChars.c_str());
     29 }
     30 
     31 void setLayerPaths_native(JNIEnv* env, jobject clazz, jobject classLoader, jstring layerPaths) {
     32     android_namespace_t* appNamespace = android::FindNamespaceByClassLoader(env, classLoader);
     33     ScopedUtfChars layerPathsChars(env, layerPaths);
     34     android::GraphicsEnv::getInstance().setLayerPaths(appNamespace, layerPathsChars.c_str());
     35 }
     36 
     37 void setDebugLayers_native(JNIEnv* env, jobject clazz, jstring layers) {
     38     if (layers != nullptr) {
     39         ScopedUtfChars layersChars(env, layers);
     40         android::GraphicsEnv::getInstance().setDebugLayers(layersChars.c_str());
     41     }
     42 }
     43 
     44 const JNINativeMethod g_methods[] = {
     45     { "setDriverPath", "(Ljava/lang/String;)V", reinterpret_cast<void*>(setDriverPath) },
     46     { "setLayerPaths", "(Ljava/lang/ClassLoader;Ljava/lang/String;)V", reinterpret_cast<void*>(setLayerPaths_native) },
     47     { "setDebugLayers", "(Ljava/lang/String;)V", reinterpret_cast<void*>(setDebugLayers_native) },
     48 };
     49 
     50 const char* const kGraphicsEnvironmentName = "android/os/GraphicsEnvironment";
     51 
     52 } // anonymous namespace
     53 
     54 namespace android {
     55 
     56 int register_android_os_GraphicsEnvironment(JNIEnv* env) {
     57     return RegisterMethodsOrDie(env, kGraphicsEnvironmentName, g_methods, NELEM(g_methods));
     58 }
     59 
     60 } // namespace android
     61