VideoTransferFunction.decode

double decode(gstvideo.types.VideoTransferFunction func, double val)

Convert val to its gamma decoded value. This is the inverse operation of [gstvideo.global.videoColorTransferEncode].

For a non-linear value L' in the range [0..1], conversion to the linear L is in general performed with a power function like:

L = L' ^ gamma

Depending on func, different formulas might be applied. Some formulas encode a linear segment in the lower range.

Parameters

funca #GstVideoTransferFunction
vala value

Returns

the gamma decoded value of val