diff options
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: |