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barrbrain/generate_table.py

Created November 6, 2015 08:50
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Chroma quantization curve table generation for Daala
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generate_table.py
import math
P = 2.25
def quant(cq): return math.trunc(math.exp((cq-6.235)*.10989525)*16.0)
def curve(cq): return quant(cq-math.pow(cq-1,P)/(2.0*P*math.pow(62.0,P-1)))
print(', '.join(['0x%04X' % n for n in [0] + [curve(cq) for cq in range(1,64)]]))
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