1 .. -*- coding: utf-8; mode: rst -*-
3 ***************************************
4 Detailed Transfer Function Descriptions
5 ***************************************
10 Transfer Function SMPTE 2084 (V4L2_XFER_FUNC_SMPTE2084)
11 =======================================================
13 The :ref:`smpte2084` standard defines the transfer function used by
14 High Dynamic Range content.
17 m1 = (2610 / 4096) / 4
19 m2 = (2523 / 4096) * 128
23 c2 = (2413 / 4096) * 32
25 c3 = (2392 / 4096) * 32
28 L' = ((c1 + c2 * L\ :sup:`m1`) / (1 + c3 * L\ :sup:`m1`))\ :sup:`m2`
30 Inverse Transfer function:
31 L = (max(L':sup:`1/m2` - c1, 0) / (c2 - c3 *
32 L'\ :sup:`1/m2`))\ :sup:`1/m1`