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Fix parsing (x,y) byte deltas in stf file. #4

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Fix parsing (x,y) byte deltas in stf file. #4

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3 changes: 3 additions & 0 deletions parsestf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -227,6 +227,9 @@ def parse(self):
else:
deltax = br.get_bits(8)
deltay = br.get_bits(8)
# sign-extend
if deltax & 0x80: deltax = deltax | -0x100
if deltay & 0x80: deltay = deltay | -0x100
else:
deltax = self.get_deltax()
deltay = self.get_deltay()
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