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"""
Copyright (C) 2023 Michael Ablassmeier <abi@grinser.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
"""
import logging
import lz4.frame
log = logging.getLogger()
def decompressFrame(data: bytes) -> bytes:
"""Decompress lz4 frame, print frame information"""
frameInfo = lz4.frame.get_frame_info(data)
log.debug("Compressed Frame: %s", frameInfo)
return lz4.frame.decompress(data)
def compressFrame(data: bytes, level: int) -> bytes:
"""Compress block with to lz4 frame, checksums
enabled for safety
"""
return lz4.frame.compress(
data,
content_checksum=True,
block_checksum=True,
compression_level=level,
)
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