diff options
| author | Tianjie Xu <xunchang@google.com> | 2017-11-14 22:46:38 -0800 |
|---|---|---|
| committer | Tianjie Xu <xunchang@google.com> | 2017-11-16 14:46:37 -0800 |
| commit | b4cba64184d6cc745749b325430d838ff0b42bd7 (patch) | |
| tree | b896c876897c97fc5ebbbede814294d18c7146a9 /bz2_compressor.h | |
| parent | 4d10c3efd7b74145e2d1c68e3a178c0fbedbd2a2 (diff) | |
| download | bsdiff-b4cba64184d6cc745749b325430d838ff0b42bd7.tar.gz | |
Implement a new bsdiff format
Add a new BSDF2 format that allows compression of ctrl/diff/extra streams
with different algorithms. The compression algorithm supported for now is
bz2 and brotli. This new format is similar to the legacy "BSDIFF40" format
except for the magic headers.
File format:
0 8 magic header
8 8 X
16 8 Y
24 8 new_file_size
32 X compressed control block
32+X Y compressed diff block
32+X+Y ??? compressed extra block
The magic header for BSDF2 format:
0 5 BSDF2
5 1 compressed type for control stream
6 1 compressed type for diff stream
7 1 compressed type for extra stream
Bug: 34220646
Test: unittest pass
Change-Id: I6eb0867e88476dbc4a4b7be609783f8c8a0a41cd
Diffstat (limited to 'bz2_compressor.h')
| -rw-r--r-- | bz2_compressor.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/bz2_compressor.h b/bz2_compressor.h index b6f4dfe..5e2e9f6 100644 --- a/bz2_compressor.h +++ b/bz2_compressor.h @@ -29,6 +29,7 @@ class BZ2Compressor : public CompressorInterface { bool Write(const uint8_t* buf, size_t size) override; bool Finish() override; const std::vector<uint8_t>& GetCompressedData() override; + CompressorType Type() override { return CompressorType::kBZ2; } private: // The low-level bzip2 stream. |