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24 lines
598 B
Python
24 lines
598 B
Python
import math
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from mpvclient import mpv
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def lux_to_gamma(lmin, lmax, rmin, rmax, lux):
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if lmax <= lmin or lux == 0:
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return 1
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num = (rmax - rmin) * (math.log(lux, 10) - math.log(lmin, 10))
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den = math.log(lmax, 10) - math.log(lmin, 10)
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result = num / den + rmin
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# clamp the result
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_max = max(rmax, rmin)
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_min = min(rmax, rmin)
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return max(min(result, _max), _min)
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@mpv.observe_property("ambient-light", mpv.MPV_FORMAT_DOUBLE)
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def lux_changed(lux):
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gamma = lux_to_gamma(16.0, 256.0, 1.0, 1.2, lux or 0)
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mpv.set_property_float("gamma-factor", gamma)
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