--- /dev/null
+/*
+ * Copyright 2017 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.
+ */
+
+#ifndef ANDROID_GUI_GRAPHICS_ENV_H
+#define ANDROID_GUI_GRAPHICS_ENV_H 1
+
+#include <string>
+
+namespace android {
+
+class GraphicsEnv {
+public:
+ static GraphicsEnv& getInstance();
+
+ // Set a search path for loading graphics drivers. The path is a list of
+ // directories separated by ':'. A directory can be contained in a zip file
+ // (drivers must be stored uncompressed and page aligned); such elements
+ // in the search path must have a '!' after the zip filename, e.g.
+ // /data/app/com.example.driver/base.apk!/lib/arm64-v8a
+ void setDriverPath(const std::string path);
+
+private:
+ GraphicsEnv() = default;
+ std::string mDriverPath;
+};
+
+} // namespace android
+
+#endif // ANDROID_GUI_GRAPHICS_ENV_H
--- /dev/null
+/*
+ * Copyright 2017 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.
+ */
+
+//#define LOG_NDEBUG 1
+#define LOG_TAG "GraphicsEnv"
+#include <gui/GraphicsEnv.h>
+
+#include <log/log.h>
+
+namespace android {
+
+/*static*/ GraphicsEnv& GraphicsEnv::getInstance() {
+ static GraphicsEnv env;
+ return env;
+}
+
+void GraphicsEnv::setDriverPath(const std::string path) {
+ if (!mDriverPath.empty()) {
+ ALOGV("ignoring attempt to change driver path from '%s' to '%s'",
+ mDriverPath.c_str(), path.c_str());
+ return;
+ }
+ ALOGV("setting driver path to '%s'", path.c_str());
+ mDriverPath = path;
+}
+
+} // namespace android