1 /* 2 * Copyright (C) 2015 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_BLOB_H 18 #define ANDROID_BLOB_H 19 20 #include <stdint.h> 21 #include <stdlib.h> 22 #include <string.h> 23 24 namespace android { 25 26 // read only byte buffer like object 27 28 class BlobReadOnly { 29 public: BlobReadOnly(const void * data,size_t size,bool byReference)30 BlobReadOnly(const void *data, size_t size, bool byReference) : 31 mMem(byReference ? NULL : malloc(size)), 32 mData(byReference ? data : mMem), 33 mSize(size) { 34 if (!byReference) { 35 memcpy(mMem, data, size); 36 } 37 } ~BlobReadOnly()38 ~BlobReadOnly() { 39 free(mMem); 40 } 41 42 private: 43 void * const mMem; 44 45 public: 46 const void * const mData; 47 const size_t mSize; 48 }; 49 50 // read/write byte buffer like object 51 52 class Blob { 53 public: Blob(size_t size)54 Blob(size_t size) : 55 mData(malloc(size)), 56 mOffset(0), 57 mSize(size), 58 mMem(mData) { } 59 60 // by reference Blob(void * data,size_t size)61 Blob(void *data, size_t size) : 62 mData(data), 63 mOffset(0), 64 mSize(size), 65 mMem(NULL) { } 66 ~Blob()67 ~Blob() { 68 free(mMem); 69 } 70 71 void * const mData; 72 size_t mOffset; 73 const size_t mSize; 74 75 private: 76 void * const mMem; 77 }; 78 79 } // namespace android 80 81 #endif // ANDROID_BLOB_H 82