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[TupleVariation] Use array.array to serialize multiple deltas

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This commit is contained in:
Behdad Esfahbod 2021-04-07 16:53:35 -06:00
parent 1e6b20cc2c
commit d5d771b2bf
1 changed files with 4 additions and 4 deletions
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8
Lib/fontTools/ttLib/tables/TupleVariation.py
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@ -380,8 +380,7 @@ class TupleVariation(object):
runLength += 1
assert runLength >= 1 and runLength <= 64
bytearr.append(runLength - 1)
for i in range(offset, pos):
bytearr.extend(struct.pack('b', deltas[i]))
bytearr.extend(array.array('b', deltas[offset:pos]))
return pos
@staticmethod
@ -414,8 +413,9 @@ class TupleVariation(object):
runLength += 1
assert runLength >= 1 and runLength <= 64
bytearr.append(DELTAS_ARE_WORDS | (runLength - 1))
for i in range(offset, pos):
bytearr.extend(struct.pack('>h', deltas[i]))
a = array.array('h', deltas[offset:pos])
if sys.byteorder != "big": a.byteswap()
bytearr.extend(a)
return pos
@staticmethod