[android/platform-hardware-interfaces.git] / graphics / allocator / 2.0 / utils / passthrough / include / allocator-passthrough / 2.0 / GrallocLoader.h
diff --git a/graphics/allocator/2.0/utils/passthrough/include/allocator-passthrough/2.0/GrallocLoader.h b/graphics/allocator/2.0/utils/passthrough/include/allocator-passthrough/2.0/GrallocLoader.h
--- /dev/null
@@ -0,0 +1,64 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <allocator-hal/2.0/AllocatorHal.h>
+
+struct hw_module_t;
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace allocator {
+namespace V2_0 {
+namespace passthrough {
+
+class GrallocLoader {
+ public:
+ static IAllocator* load() {
+ const hw_module_t* module = loadModule();
+ if (!module) {
+ return nullptr;
+ }
+ auto hal = createHal(module);
+ if (!hal) {
+ return nullptr;
+ }
+ return createAllocator(std::move(hal));
+ }
+
+ // load the gralloc module
+ static const hw_module_t* loadModule();
+
+ // return the major api version of the module
+ static int getModuleMajorApiVersion(const hw_module_t* module);
+
+ // create an AllocatorHal instance
+ static std::unique_ptr<hal::AllocatorHal> createHal(const hw_module_t* module);
+
+ // create an IAllocator instance
+ static IAllocator* createAllocator(std::unique_ptr<hal::AllocatorHal> hal);
+};
+
+} // namespace passthrough
+} // namespace V2_0
+} // namespace allocator
+} // namespace graphics
+} // namespace hardware
+} // namespace android