1 /* 2 * Copyright 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 17 #ifndef ANDROID_AAUDIO_SHARED_REGION_PARCELABLE_H 18 #define ANDROID_AAUDIO_SHARED_REGION_PARCELABLE_H 19 20 #include <stdint.h> 21 22 #include <sys/mman.h> 23 24 #include <aaudio/AAudio.h> 25 #include <aaudio/SharedRegion.h> 26 27 #include "binding/SharedMemoryParcelable.h" 28 29 using android::status_t; 30 31 namespace aaudio { 32 33 class SharedRegionParcelable { 34 public: 35 SharedRegionParcelable() = default; 36 37 // Construct based on a parcelable representation. 38 explicit SharedRegionParcelable(const SharedRegion& parcelable); 39 40 void setup(int32_t sharedMemoryIndex, int32_t offsetInBytes, int32_t sizeInBytes); 41 42 aaudio_result_t resolve(SharedMemoryParcelable *memoryParcels, void **regionAddressPtr); 43 44 bool isFileDescriptorSafe(SharedMemoryParcelable *memoryParcels); 45 46 void dump(); 47 48 // Extract a parcelable representation of this object. 49 SharedRegion parcelable() const; 50 51 private: 52 int32_t mSharedMemoryIndex = -1; 53 int32_t mOffsetInBytes = 0; 54 int32_t mSizeInBytes = 0; 55 56 aaudio_result_t validate() const; 57 }; 58 59 } /* namespace aaudio */ 60 61 #endif //ANDROID_AAUDIO_SHARED_REGION_PARCELABLE_H 62