def lz4_compress(packet, level):
if level >= 9:
return level | LZ4_FLAG, compressHC(packet)
#clamp it: 0->17, 1->12, 2->7, 3->2, >=4->1
if level <= 2:
#clamp it: 0->17, 1->12, 2->7, 3->2, >=4->1
accel = max(1, 17 - level * 5)
return level | LZ4_FLAG, LZ4_compress_fast(packet, accel)
return level | LZ4_FLAG, LZ4_compress(packet)
def do_test_rountrip(i_data, c_data=None):
from lz4 import LZ4_compress, LZ4_uncompress #@UnresolvedImport
c = LZ4_compress(i_data)
if c_data is not None:
assert c_data == c, "expected compressed data to look like %s, but got %s" % (
hl(c_data), hl(c))
d = LZ4_uncompress(c)
assert d == i_data, "expected decompressed data to look like original %s, but got %s" % (
hl(i_data), hl(d))
def lz4_compress(packet, level):
if level>=9:
return level | LZ4_FLAG, compressHC(packet)
return level | LZ4_FLAG, LZ4_compress(packet)
def lz4_compress(packet, level):
return level | LZ4_FLAG, LZ4_compress(packet)
def lz4_compress(packet, level):
if _memoryview and isinstance(packet, _memoryview):
packet = packet.tobytes()
return level | LZ4_FLAG, LZ4_compress(packet)