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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 11:40:06 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 11:59:40 -0300 |
| commit | 60c2820d0f6d3497975b6488e2599f8f611d8b95 (patch) | |
| tree | b3b03707c6438ea9b99cc57e847ebf517f968ab1 /Documentation/media/uapi/v4l/pixfmt-008.rst | |
| parent | a97369b5e21ea9b8b5fef7c0f4f48bbe60c07ca3 (diff) | |
| download | linux-stable-60c2820d0f6d3497975b6488e2599f8f611d8b95.tar.gz linux-stable-60c2820d0f6d3497975b6488e2599f8f611d8b95.tar.bz2 linux-stable-60c2820d0f6d3497975b6488e2599f8f611d8b95.zip | |
doc_rst: rename the media Sphinx suff to Documentation/media
The name of the subsystem is "media", and not "linux_tv". Also,
as we plan to add other stuff there in the future, let's
rename also the media uAPI book to media_uapi, to make it
clearer.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/uapi/v4l/pixfmt-008.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-008.rst | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/pixfmt-008.rst b/Documentation/media/uapi/v4l/pixfmt-008.rst new file mode 100644 index 000000000000..4bec79784bdd --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-008.rst @@ -0,0 +1,32 @@ +.. -*- coding: utf-8; mode: rst -*- + +*************************************** +Detailed Transfer Function Descriptions +*************************************** + + +.. _xf-smpte-2084: + +Transfer Function SMPTE 2084 (V4L2_XFER_FUNC_SMPTE2084) +======================================================= + +The :ref:`smpte2084` standard defines the transfer function used by +High Dynamic Range content. + +Constants: + m1 = (2610 / 4096) / 4 + + m2 = (2523 / 4096) * 128 + + c1 = 3424 / 4096 + + c2 = (2413 / 4096) * 32 + + c3 = (2392 / 4096) * 32 + +Transfer function: + L' = ((c1 + c2 * L\ :sup:`m1`) / (1 + c3 * L\ :sup:`m1`))\ :sup:`m2` + +Inverse Transfer function: + L = (max(L':sup:`1/m2` - c1, 0) / (c2 - c3 * + L'\ :sup:`1/m2`))\ :sup:`1/m1` |