| /* |
| * Copyright (C) 2016 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_HIDL_PASSTHROUGH_SUPPORT_H |
| #define ANDROID_HIDL_PASSTHROUGH_SUPPORT_H |
| |
| #include <android/hidl/base/1.0/IBase.h> |
| |
| namespace android { |
| namespace hardware { |
| namespace details { |
| |
| /* |
| * Wrap the given interface with the lowest BsChild possible. Will return the |
| * argument directly if nullptr or isRemote(). |
| * |
| * Note that 'static_cast<IFoo*>(wrapPassthrough(foo).get()) is guaranteed to work' |
| * assuming that foo is an instance of IFoo. |
| * |
| * TODO(b/33754152): calling this method multiple times should not re-wrap. |
| */ |
| sp<::android::hidl::base::V1_0::IBase> wrapPassthroughInternal( |
| sp<::android::hidl::base::V1_0::IBase> iface); |
| |
| /** |
| * Helper method which provides reasonable code to wrapPassthroughInternal |
| * which can be used to call wrapPassthrough. |
| */ |
| template <typename IType, |
| typename = std::enable_if_t<std::is_same<i_tag, typename IType::_hidl_tag>::value>> |
| sp<IType> wrapPassthrough(sp<IType> iface) { |
| return static_cast<IType*>(wrapPassthroughInternal(iface).get()); |
| } |
| |
| } // namespace details |
| } // namespace hardware |
| } // namespace android |
| |
| |
| #endif // ANDROID_HIDL_PASSTHROUGH_SUPPORT_H |
