move GraphicEnv from libgui to libui
This breaks a circular dependency between libEGL
and libgui.
Test: compiled and booted a device
Change-Id: I78932bba07fb9ef310d8e1622bd3a47f57e89c45
diff --git a/include/ui/GraphicsEnv.h b/include/ui/GraphicsEnv.h
new file mode 100644
index 0000000..7817076
--- /dev/null
+++ b/include/ui/GraphicsEnv.h
@@ -0,0 +1,59 @@
+/*
+ * 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_UI_GRAPHICS_ENV_H
+#define ANDROID_UI_GRAPHICS_ENV_H 1
+
+#include <string>
+
+struct android_namespace_t;
+
+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);
+ android_namespace_t* getDriverNamespace();
+
+private:
+ GraphicsEnv() = default;
+ std::string mDriverPath;
+ android_namespace_t* mDriverNamespace = nullptr;
+};
+
+} // namespace android
+
+/* FIXME
+ * Export an un-mangled function that just does
+ * return android::GraphicsEnv::getInstance().getDriverNamespace();
+ * This allows libEGL to get the function pointer via dlsym, since it can't
+ * directly link against libgui. In a future release, we'll fix this so that
+ * libgui does not depend on graphics API libraries, and libEGL can link
+ * against it. The current dependencies from libgui -> libEGL are:
+ * - the GLConsumer class, which should be moved to its own library
+ * - the EGLsyncKHR synchronization in BufferQueue, which is deprecated and
+ * will be removed soon.
+ */
+extern "C" android_namespace_t* android_getDriverNamespace();
+
+#endif // ANDROID_UI_GRAPHICS_ENV_H