1 // Copyright 2017 The Chromium OS 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 SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ 6 #define SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ 7 8 #include "puffin/common.h" 9 #include "puffin/stream.h" 10 11 namespace puffin { 12 13 extern const char kMagic[]; 14 extern const size_t kMagicLength; 15 16 // Applies the puffin patch to deflate stream |src| to create deflate stream 17 // |dst|. This function is used in the client and internally uses bspatch to 18 // apply the patch. The input streams are of type |shared_ptr| because 19 // |PuffPatch| needs to wrap these streams into another ones and we don't want 20 // to loose the ownership of the input streams. Optionally one can cache the 21 // puff buffers individually if non-zero value is passed |max_cache_size|. 22 // 23 // |src| IN Source deflate stream. 24 // |dst| IN Destination deflate stream. 25 // |patch| IN The input patch. 26 // |patch_length| IN The length of the patch. 27 // |max_cache_size|IN The maximum amount of memory to cache puff buffers. 28 PUFFIN_EXPORT 29 bool PuffPatch(UniqueStreamPtr src, 30 UniqueStreamPtr dst, 31 const uint8_t* patch, 32 size_t patch_length, 33 size_t max_cache_size = 0); 34 35 } // namespace puffin 36 37 #endif // SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ 38
