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block_decompressor.cpp
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64 lines (57 loc) · 2.39 KB
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/* vim:set ts=2 sw=2 sts=2 et: */
/**
* \author Marcus Holland-Moritz (github@mhxnet.de)
* \copyright Copyright (c) Marcus Holland-Moritz
*
* This file is part of dwarfs.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the “Software”), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* SPDX-License-Identifier: MIT
*/
#include <dwarfs/block_decompressor.h>
#include <dwarfs/decompressor_registry.h>
#include <dwarfs/fstypes.h>
#include <dwarfs/malloc_byte_buffer.h>
namespace dwarfs {
block_decompressor::block_decompressor(compression_type type,
std::span<uint8_t const> data) {
impl_ = decompressor_registry::instance().create(type, data);
}
shared_byte_buffer
block_decompressor::decompress(compression_type type,
std::span<uint8_t const> data) {
block_decompressor bd(type, data);
auto target = malloc_byte_buffer::create_reserve(bd.uncompressed_size());
bd.start_decompression(target);
bd.decompress_frame(bd.uncompressed_size());
return target.share();
}
shared_byte_buffer
block_decompressor::start_decompression(mutable_byte_buffer target) {
impl_->start_decompression(target);
target.freeze_location();
return target.share();
}
shared_byte_buffer
block_decompressor::start_decompression(byte_buffer_factory const& bbf) {
auto target = bbf.create_mutable_fixed_reserve(impl_->uncompressed_size());
return start_decompression(target);
}
} // namespace dwarfs