| // Copyright 2017 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ |
| #define SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ |
| |
| #include "puffin/common.h" |
| #include "puffin/stream.h" |
| |
| namespace puffin { |
| |
| extern const char kMagic[]; |
| extern const size_t kMagicLength; |
| constexpr size_t kDefaultCacheSize = 64 * 1024; // Total 64K cache. |
| |
| // Applies the puffin patch to deflate stream |src| to create deflate stream |
| // |dst|. This function is used in the client and internally uses bspatch to |
| // apply the patch. The input streams are of type |shared_ptr| because |
| // |PuffPatch| needs to wrap these streams into another ones and we don't want |
| // to loose the ownership of the input streams. Optionally one can cache the |
| // puff buffers individually if non-zero value is passed |max_cache_size|. |
| // |
| // |src| IN Source deflate stream. |
| // |dst| IN Destination deflate stream. |
| // |patch| IN The input patch. |
| // |patch_length| IN The length of the patch. |
| // |max_cache_size|IN The maximum amount of memory to cache puff buffers. |
| bool PuffPatch(UniqueStreamPtr src, |
| UniqueStreamPtr dst, |
| const uint8_t* patch, |
| size_t patch_length, |
| size_t max_cache_size = kDefaultCacheSize); |
| |
| } // namespace puffin |
| |
| #endif // SRC_INCLUDE_PUFFIN_PUFFPATCH_H_ |
