You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.8 KiB
57 lines
1.8 KiB
// |
|
// Copyright (C) 2009 The Android Open Source Project |
|
// |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
// |
|
|
|
#ifndef UPDATE_ENGINE_PAYLOAD_CONSUMER_BZIP_EXTENT_WRITER_H_ |
|
#define UPDATE_ENGINE_PAYLOAD_CONSUMER_BZIP_EXTENT_WRITER_H_ |
|
|
|
#include <bzlib.h> |
|
#include <memory> |
|
#include <vector> |
|
|
|
#include <brillo/secure_blob.h> |
|
|
|
#include "update_engine/common/utils.h" |
|
#include "update_engine/payload_consumer/extent_writer.h" |
|
|
|
// BzipExtentWriter is a concrete ExtentWriter subclass that bzip-decompresses |
|
// what it's given in Write. It passes the decompressed data to an underlying |
|
// ExtentWriter. |
|
|
|
namespace chromeos_update_engine { |
|
|
|
class BzipExtentWriter : public ExtentWriter { |
|
public: |
|
explicit BzipExtentWriter(std::unique_ptr<ExtentWriter> next) |
|
: next_(std::move(next)) { |
|
memset(&stream_, 0, sizeof(stream_)); |
|
} |
|
~BzipExtentWriter() override = default; |
|
|
|
bool Init(FileDescriptorPtr fd, |
|
const std::vector<Extent>& extents, |
|
uint32_t block_size) override; |
|
bool Write(const void* bytes, size_t count) override; |
|
bool EndImpl() override; |
|
|
|
private: |
|
std::unique_ptr<ExtentWriter> next_; // The underlying ExtentWriter. |
|
bz_stream stream_; // the libbz2 stream |
|
brillo::Blob input_buffer_; |
|
}; |
|
|
|
} // namespace chromeos_update_engine |
|
|
|
#endif // UPDATE_ENGINE_PAYLOAD_CONSUMER_BZIP_EXTENT_WRITER_H_
|
|
|