diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2016-08-04 11:09:03 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-08-24 13:38:31 +0200 |
| commit | dda3aeaa16434482c2aec03c54262dd2bc9c357b (patch) | |
| tree | 0142ec80dda234030425186187900c852f21bd90 /Documentation/media | |
| parent | [media] videodev2.h: put V4L2_YCBCR_ENC_SYCC under #ifndef __KERNEL__ (diff) | |
| download | linux-dda3aeaa16434482c2aec03c54262dd2bc9c357b.tar.xz linux-dda3aeaa16434482c2aec03c54262dd2bc9c357b.zip | |
[media] pixfmt.rst: drop V4L2_YCBCR_ENC_SYCC from the documentation
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@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media')
| -rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-006.rst | 10 | ||||
| -rw-r--r-- | 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 56b691300158..574294ec0a89 100644 --- a/Documentation/media/uapi/v4l/pixfmt-006.rst +++ b/Documentation/media/uapi/v4l/pixfmt-006.rst @@ -229,23 +229,17 @@ 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 662302cfba8b..ab2fa3565fdd 100644 --- a/Documentation/media/uapi/v4l/pixfmt-007.rst +++ b/Documentation/media/uapi/v4l/pixfmt-007.rst @@ -261,7 +261,7 @@ 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: @@ -339,8 +339,7 @@ Inverse Transfer function: L = ((L' + 0.055) / 1.055) ^{2.4}\text{, 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`: .. math:: @@ -351,11 +350,8 @@ 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: |