267 lines
3.5 KiB
ReStructuredText
267 lines
3.5 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
|
|
|
|
.. _V4L2-PIX-FMT-YUV444M:
|
|
.. _v4l2-pix-fmt-yvu444m:
|
|
|
|
************************************************************
|
|
V4L2_PIX_FMT_YUV444M ('YM24'), V4L2_PIX_FMT_YVU444M ('YM42')
|
|
************************************************************
|
|
|
|
*man V4L2_PIX_FMT_YUV444M(2)*
|
|
|
|
V4L2_PIX_FMT_YVU444M
|
|
Planar formats with full horizontal resolution, also known as YUV and
|
|
YVU 4:4:4
|
|
|
|
|
|
Description
|
|
===========
|
|
|
|
This is a multi-planar format, as opposed to a packed format. The three
|
|
components are separated into three sub-images or planes.
|
|
|
|
The Y plane is first. The Y plane has one byte per pixel. For
|
|
``V4L2_PIX_FMT_YUV444M`` the Cb data constitutes the second plane which
|
|
is the same width and height as the Y plane (and as the image). The Cr
|
|
data, just like the Cb plane, is in the third plane.
|
|
|
|
``V4L2_PIX_FMT_YVU444M`` is the same except the Cr data is stored in the
|
|
second plane and the Cb data in the third plane.
|
|
|
|
If the Y plane has pad bytes after each row, then the Cb and Cr planes
|
|
have the same number of pad bytes after their rows.
|
|
|
|
``V4L2_PIX_FMT_YUV444M`` and ``V4L2_PIX_FMT_YUV444M`` are intended to be
|
|
used only in drivers and applications that support the multi-planar API,
|
|
described in :ref:`planar-apis`.
|
|
|
|
**Byte Order.**
|
|
Each cell is one byte.
|
|
|
|
.. flat-table::
|
|
:header-rows: 0
|
|
:stub-columns: 0
|
|
:widths: 2 1 1 1 1
|
|
|
|
|
|
- .. row 1
|
|
|
|
- start0 + 0:
|
|
|
|
- Y'\ :sub:`00`
|
|
|
|
- Y'\ :sub:`01`
|
|
|
|
- Y'\ :sub:`02`
|
|
|
|
- Y'\ :sub:`03`
|
|
|
|
- .. row 2
|
|
|
|
- start0 + 4:
|
|
|
|
- Y'\ :sub:`10`
|
|
|
|
- Y'\ :sub:`11`
|
|
|
|
- Y'\ :sub:`12`
|
|
|
|
- Y'\ :sub:`13`
|
|
|
|
- .. row 3
|
|
|
|
- start0 + 8:
|
|
|
|
- Y'\ :sub:`20`
|
|
|
|
- Y'\ :sub:`21`
|
|
|
|
- Y'\ :sub:`22`
|
|
|
|
- Y'\ :sub:`23`
|
|
|
|
- .. row 4
|
|
|
|
- start0 + 12:
|
|
|
|
- Y'\ :sub:`30`
|
|
|
|
- Y'\ :sub:`31`
|
|
|
|
- Y'\ :sub:`32`
|
|
|
|
- Y'\ :sub:`33`
|
|
|
|
- .. row 5
|
|
|
|
-
|
|
|
|
- .. row 6
|
|
|
|
- start1 + 0:
|
|
|
|
- Cb\ :sub:`00`
|
|
|
|
- Cb\ :sub:`01`
|
|
|
|
- Cb\ :sub:`02`
|
|
|
|
- Cb\ :sub:`03`
|
|
|
|
- .. row 7
|
|
|
|
- start1 + 4:
|
|
|
|
- Cb\ :sub:`10`
|
|
|
|
- Cb\ :sub:`11`
|
|
|
|
- Cb\ :sub:`12`
|
|
|
|
- Cb\ :sub:`13`
|
|
|
|
- .. row 8
|
|
|
|
- start1 + 8:
|
|
|
|
- Cb\ :sub:`20`
|
|
|
|
- Cb\ :sub:`21`
|
|
|
|
- Cb\ :sub:`22`
|
|
|
|
- Cb\ :sub:`23`
|
|
|
|
- .. row 9
|
|
|
|
- start1 + 12:
|
|
|
|
- Cb\ :sub:`20`
|
|
|
|
- Cb\ :sub:`21`
|
|
|
|
- Cb\ :sub:`32`
|
|
|
|
- Cb\ :sub:`33`
|
|
|
|
- .. row 10
|
|
|
|
-
|
|
|
|
- .. row 11
|
|
|
|
- start2 + 0:
|
|
|
|
- Cr\ :sub:`00`
|
|
|
|
- Cr\ :sub:`01`
|
|
|
|
- Cr\ :sub:`02`
|
|
|
|
- Cr\ :sub:`03`
|
|
|
|
- .. row 12
|
|
|
|
- start2 + 4:
|
|
|
|
- Cr\ :sub:`10`
|
|
|
|
- Cr\ :sub:`11`
|
|
|
|
- Cr\ :sub:`12`
|
|
|
|
- Cr\ :sub:`13`
|
|
|
|
- .. row 13
|
|
|
|
- start2 + 8:
|
|
|
|
- Cr\ :sub:`20`
|
|
|
|
- Cr\ :sub:`21`
|
|
|
|
- Cr\ :sub:`22`
|
|
|
|
- Cr\ :sub:`23`
|
|
|
|
- .. row 14
|
|
|
|
- start2 + 12:
|
|
|
|
- Cr\ :sub:`30`
|
|
|
|
- Cr\ :sub:`31`
|
|
|
|
- Cr\ :sub:`32`
|
|
|
|
- Cr\ :sub:`33`
|
|
|
|
|
|
**Color Sample Location..**
|
|
|
|
|
|
|
|
.. flat-table::
|
|
:header-rows: 0
|
|
:stub-columns: 0
|
|
|
|
|
|
- .. row 1
|
|
|
|
-
|
|
- 0
|
|
|
|
- 1
|
|
|
|
- 2
|
|
|
|
- 3
|
|
|
|
- .. row 2
|
|
|
|
- 0
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- .. row 3
|
|
|
|
- 1
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- .. row 4
|
|
|
|
- 2
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- .. row 5
|
|
|
|
- 3
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|
|
|
|
- YC
|