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-.. Permission is granted to copy, distribute and/or modify this
-.. document under the terms of the GNU Free Documentation License,
-.. Version 1.1 or any later version published by the Free Software
-.. Foundation, with no Invariant Sections, no Front-Cover Texts
-.. and no Back-Cover Texts. A copy of the license is included at
-.. Documentation/media/uapi/fdl-appendix.rst.
-..
-.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
-
-.. _packed-yuv:
-
-******************
-Packed YUV formats
-******************
-
-Description
-===========
-
-Similar to the packed RGB formats these formats store the Y, Cb and Cr
-component of each pixel in one 16 or 32 bit word.
-
-
-.. raw:: latex
-
- \begingroup
- \tiny
- \setlength{\tabcolsep}{2pt}
-
-.. _packed-yuv-formats:
-
-.. tabularcolumns:: |p{2.5cm}|p{0.69cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|
-
-.. flat-table:: Packed YUV Image Formats
- :header-rows: 2
- :stub-columns: 0
-
- * - Identifier
- - Code
-
- - :cspan:`7` Byte 0 in memory
-
- - :cspan:`7` Byte 1
-
- - :cspan:`7` Byte 2
-
- - :cspan:`7` Byte 3
-
- * -
- -
- - 7
- - 6
- - 5
- - 4
- - 3
- - 2
- - 1
- - 0
-
- - 7
- - 6
- - 5
- - 4
- - 3
- - 2
- - 1
- - 0
-
- - 7
- - 6
- - 5
- - 4
- - 3
- - 2
- - 1
- - 0
-
- - 7
- - 6
- - 5
- - 4
- - 3
- - 2
- - 1
- - 0
-
- * .. _V4L2-PIX-FMT-YUV444:
-
- - ``V4L2_PIX_FMT_YUV444``
- - 'Y444'
-
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- - a\ :sub:`3`
- - a\ :sub:`2`
- - a\ :sub:`1`
- - a\ :sub:`0`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- - :cspan:`15`
-
- * .. _V4L2-PIX-FMT-YUV555:
-
- - ``V4L2_PIX_FMT_YUV555``
- - 'YUVO'
-
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- - a
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
-
- - :cspan:`15`
- * .. _V4L2-PIX-FMT-YUV565:
-
- - ``V4L2_PIX_FMT_YUV565``
- - 'YUVP'
-
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
-
- - :cspan:`15`
-
- * .. _V4L2-PIX-FMT-YUV32:
-
- - ``V4L2_PIX_FMT_YUV32``
- - 'YUV4'
-
- - a\ :sub:`7`
- - a\ :sub:`6`
- - a\ :sub:`5`
- - a\ :sub:`4`
- - a\ :sub:`3`
- - a\ :sub:`2`
- - a\ :sub:`1`
- - a\ :sub:`0`
-
- - Y'\ :sub:`7`
- - Y'\ :sub:`6`
- - Y'\ :sub:`5`
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- - Cb\ :sub:`7`
- - Cb\ :sub:`6`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
-
- - Cr\ :sub:`7`
- - Cr\ :sub:`6`
- - Cr\ :sub:`5`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- * .. _V4L2-PIX-FMT-AYUV32:
-
- - ``V4L2_PIX_FMT_AYUV32``
- - 'AYUV'
-
- - a\ :sub:`7`
- - a\ :sub:`6`
- - a\ :sub:`5`
- - a\ :sub:`4`
- - a\ :sub:`3`
- - a\ :sub:`2`
- - a\ :sub:`1`
- - a\ :sub:`0`
-
- - Y'\ :sub:`7`
- - Y'\ :sub:`6`
- - Y'\ :sub:`5`
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- - Cb\ :sub:`7`
- - Cb\ :sub:`6`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
-
- - Cr\ :sub:`7`
- - Cr\ :sub:`6`
- - Cr\ :sub:`5`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- * .. _V4L2-PIX-FMT-XYUV32:
-
- - ``V4L2_PIX_FMT_XYUV32``
- - 'XYUV'
-
- -
- -
- -
- -
- -
- -
- -
- -
-
- - Y'\ :sub:`7`
- - Y'\ :sub:`6`
- - Y'\ :sub:`5`
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- - Cb\ :sub:`7`
- - Cb\ :sub:`6`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
-
- - Cr\ :sub:`7`
- - Cr\ :sub:`6`
- - Cr\ :sub:`5`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- * .. _V4L2-PIX-FMT-VUYA32:
-
- - ``V4L2_PIX_FMT_VUYA32``
- - 'VUYA'
-
- - Cr\ :sub:`7`
- - Cr\ :sub:`6`
- - Cr\ :sub:`5`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- - Cb\ :sub:`7`
- - Cb\ :sub:`6`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
-
- - Y'\ :sub:`7`
- - Y'\ :sub:`6`
- - Y'\ :sub:`5`
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- - a\ :sub:`7`
- - a\ :sub:`6`
- - a\ :sub:`5`
- - a\ :sub:`4`
- - a\ :sub:`3`
- - a\ :sub:`2`
- - a\ :sub:`1`
- - a\ :sub:`0`
-
- * .. _V4L2-PIX-FMT-VUYX32:
-
- - ``V4L2_PIX_FMT_VUYX32``
- - 'VUYX'
-
- - Cr\ :sub:`7`
- - Cr\ :sub:`6`
- - Cr\ :sub:`5`
- - Cr\ :sub:`4`
- - Cr\ :sub:`3`
- - Cr\ :sub:`2`
- - Cr\ :sub:`1`
- - Cr\ :sub:`0`
-
- - Cb\ :sub:`7`
- - Cb\ :sub:`6`
- - Cb\ :sub:`5`
- - Cb\ :sub:`4`
- - Cb\ :sub:`3`
- - Cb\ :sub:`2`
- - Cb\ :sub:`1`
- - Cb\ :sub:`0`
-
- - Y'\ :sub:`7`
- - Y'\ :sub:`6`
- - Y'\ :sub:`5`
- - Y'\ :sub:`4`
- - Y'\ :sub:`3`
- - Y'\ :sub:`2`
- - Y'\ :sub:`1`
- - Y'\ :sub:`0`
-
- -
- -
- -
- -
- -
- -
- -
- -
-
-.. raw:: latex
-
- \endgroup
-
-.. note::
-
- #) Bit 7 is the most significant bit;
-
- #) The value of a = alpha bits is undefined when reading from the driver,
- ignored when writing to the driver, except when alpha blending has
- been negotiated for a :ref:`Video Overlay <overlay>` or
- :ref:`Video Output Overlay <osd>` for the formats Y444, YUV555 and
- YUV4. However, for formats AYUV32 and VUYA32, the alpha component is
- expected to contain a meaningful value that can be used by drivers
- and applications. And, the formats XYUV32 and VUYX32 contain undefined
- alpha values that must be ignored by all applications and drivers.