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.. -*- coding: utf-8; mode: rst -*-
.. _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
\newline\newline\begin{adjustbox}{width=\columnwidth}
.. _packed-yuv-formats:
.. tabularcolumns:: |p{4.5cm}|p{3.3cm}|p{0.7cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.2cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.2cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.2cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{0.4cm}|p{1.7cm}|
.. 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
* -
-
- Bit
- 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`
* .. _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`
* .. _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`
* .. _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`
.. raw:: latex
\end{adjustbox}\newline\newline
.. 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>`.
|
