1 /* 2 * Copyright (C) 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 #ifndef ANDROID_HARDWARE_MAPPING_H 17 #define ANDROID_HARDWARE_MAPPING_H 18 #include <android/hidl/memory/1.0/IMemory.h> 19 #include <hidl/HidlSupport.h> 20 21 namespace android { 22 namespace hardware { 23 24 /** 25 * Returns the IMemory instance corresponding to a hidl_memory object. 26 * If the shared memory cannot be fetched, this returns nullptr. 27 * 28 * Note, this method call is relatively expensive and does not cache conversions. 29 * It should only be done when initializing a buffer and not on every buffer read. 30 */ 31 sp<android::hidl::memory::V1_0::IMemory> mapMemory(const hidl_memory &memory); 32 33 } // namespace hardware 34 } // namespace android 35 #endif 36