1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef PPAPI_PROXY_CONTENT_DECRYPTOR_PRIVATE_SERIALIZER_H_ 6 #define PPAPI_PROXY_CONTENT_DECRYPTOR_PRIVATE_SERIALIZER_H_ 7 8 #include <cstring> 9 #include <string> 10 11 #include "ppapi/c/private/pp_content_decryptor.h" 12 13 namespace ppapi { 14 namespace proxy { 15 16 // Serialization/deserialization utility functions for storing/extracting 17 // PP_DecryptedBlockInfo, PP_EncryptedBlockInfo, and PP_DecompressedFrameInfo 18 // structs within std::string's for passing through IPC. Both functions return 19 // true upon success, and false upon failure. 20 // 21 // Note, these functions check the size of |block_info| against the size of 22 // the "serialized" data stored within |serialized_block_info|, and will report 23 // failure if expectations are not met. Use of CHECK/DCHECK has been avoided 24 // because the functions are intended for use on both sides of the IPC proxy. 25 26 template <typename T> 27 bool SerializeBlockInfo(const T& block_info, 28 std::string* serialized_block_info) { 29 if (!serialized_block_info) 30 return false; 31 32 serialized_block_info->assign(reinterpret_cast<const char*>(&block_info), 33 sizeof(block_info)); 34 35 if (serialized_block_info->size() != sizeof(block_info)) 36 return false; 37 38 return true; 39 } 40 41 template <typename T> 42 bool DeserializeBlockInfo(const std::string& serialized_block_info, 43 T* block_info) { 44 if (!block_info) 45 return false; 46 47 if (serialized_block_info.size() != sizeof(*block_info)) 48 return false; 49 50 std::memcpy(block_info, serialized_block_info.data(), sizeof(*block_info)); 51 return true; 52 } 53 54 } // namespace proxy 55 } // namespace ppapi 56 57 #endif // PPAPI_PROXY_CONTENT_DECRYPTOR_PRIVATE_SERIALIZER_H_ 58
