From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
The V4L2_YCBCR_ENC_SYCC encoding is identical to V4L2_YCBCR_ENC_601.
Remove V4L2_YCBCR_ENC_SYCC from the documentation since it should not
be used.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
Documentation/media/uapi/v4l/pixfmt-006.rst | 10 ++--------
Documentation/media/uapi/v4l/pixfmt-007.rst | 12 ++++--------
2 files changed, 6 insertions(+), 16 deletions(-)
diff --git a/Documentation/media/uapi/v4l/pixfmt-006.rst b/Documentation/media/uapi/v4l/pixfmt-006.rst
index 987b9a8..94271c8 100644
--- a/Documentation/media/uapi/v4l/pixfmt-006.rst
+++ b/Documentation/media/uapi/v4l/pixfmt-006.rst
@@ -224,23 +224,17 @@ needs to be filled in.
- .. row 7
- - ``V4L2_YCBCR_ENC_SYCC``
-
- - Use the extended gamut sYCC encoding.
-
- - .. row 8
-
- ``V4L2_YCBCR_ENC_BT2020``
- Use the default non-constant luminance BT.2020 Y'CbCr encoding.
- - .. row 9
+ - .. row 8
- ``V4L2_YCBCR_ENC_BT2020_CONST_LUM``
- Use the constant luminance BT.2020 Yc'CbcCrc encoding.
- - .. row 10
+ - .. row 9
- ``V4L2_YCBCR_ENC_SMPTE_240M``
diff --git a/Documentation/media/uapi/v4l/pixfmt-007.rst b/Documentation/media/uapi/v4l/pixfmt-007.rst
index 1f64477..0f9ce74 100644
--- a/Documentation/media/uapi/v4l/pixfmt-007.rst
+++ b/Documentation/media/uapi/v4l/pixfmt-007.rst
@@ -241,7 +241,7 @@ Colorspace sRGB (V4L2_COLORSPACE_SRGB)
The :ref:`srgb` standard defines the colorspace used by most webcams
and computer graphics. The default transfer function is
``V4L2_XFER_FUNC_SRGB``. The default Y'CbCr encoding is
-``V4L2_YCBCR_ENC_SYCC``. The default Y'CbCr quantization is full range.
+``V4L2_YCBCR_ENC_601``. The default Y'CbCr quantization is full range.
The chromaticities of the primary colors and the white reference are:
@@ -313,8 +313,7 @@ Inverse Transfer function:
L = ((L' + 0.055) / 1.055) :sup:`2.4` for L' > 0.04045
The luminance (Y') and color difference (Cb and Cr) are obtained with
-the following ``V4L2_YCBCR_ENC_SYCC`` encoding as defined by
-:ref:`sycc`:
+the following ``V4L2_YCBCR_ENC_601`` encoding as defined by :ref:`sycc`:
Y' = 0.2990R' + 0.5870G' + 0.1140B'
@@ -323,11 +322,8 @@ the following ``V4L2_YCBCR_ENC_SYCC`` encoding as defined by
Cr = 0.5R' - 0.4187G' - 0.0813B'
Y' is clamped to the range [0…1] and Cb and Cr are clamped to the range
-[-0.5…0.5]. The ``V4L2_YCBCR_ENC_SYCC`` quantization is always full
-range. Although this Y'CbCr encoding looks very similar to the
-``V4L2_YCBCR_ENC_XV601`` encoding, it is not. The
-``V4L2_YCBCR_ENC_XV601`` scales and offsets the Y'CbCr values before
-quantization, but this encoding does not do that.
+[-0.5…0.5]. This transform is identical to one defined in SMPTE
+170M/BT.601. The Y'CbCr quantization is full range.
.. _col-adobergb:
--
2.8.1
--
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