linux_dsm_epyc7002/Documentation/media/uapi/v4l/pixfmt-nv24.rst
Laurent Pinchart c2b66cafdf [media] v4l: doc: Remove row numbers from tables
Shorten the tables by removing row numbers in comments, allowing for
later insertion of rows with minimal diffs.

All changes have been generated by the following script.

import io
import re
import sys

def process_table(fname, data):
	if fname.endswith('hist-v4l2.rst'):
		data = re.sub(u'\n{1,2}\t( ?)  -( ?) ?', u'\n\t\\1 -\\2', data, flags = re.MULTILINE)
		data = re.sub(u'\n(\t|       )-  \.\. row [0-9]+\n\t  ?-( ?) ?', u'\\1* -\\2', data, flags = re.MULTILINE)
	else:
		data = re.sub(u'\n{1,2}       -( ?) ?', u'\n      -\\1', data, flags = re.MULTILINE)
		data = re.sub(u'(\n?)(\n\n    -  \.\. row 1\n)', u'\n\\2', data, flags = re.MULTILINE)
		data = re.sub(u'\n    -  \.\. row [0-9]+\n      -( ?) ?', u'    * -\\1', data, flags = re.MULTILINE)
		data = re.sub(u'\n    -  \.\. row [0-9]+\n       \.\. (_[A-Z0-9_`-]*:)', u'\n    -  .. \\1', data, flags = re.MULTILINE)
		data = re.sub(u'\n    -  \.\. (_[A-Z0-9_`-]*:)\n      -', u'    * .. \\1\n\n      -', data, flags = re.MULTILINE)
		data = re.sub(u'^       - ', u'      -', data, flags = re.MULTILINE)
		data = re.sub(u'^(\t{1,2})  ', u'\\1', data, flags = re.MULTILINE)

	return data

def process_file(fname, data):
	buf = io.StringIO(data)
	output = ''
	in_table = False
	table_separator = 0

	for line in buf.readlines():
		if line.find('.. flat-table::') != -1:
			in_table = True
			table = ''
		elif in_table and not re.match('^[\t\n]|(    )', line):
			in_table = False
			output += process_table(fname, table)

		if in_table:
			table += line
		else:
			output += line

	if in_table:
		in_table = False
		output += process_table(fname, table)

	return output

fname = sys.argv[1]

data = file(fname, 'rb').read().decode('utf-8')
data = process_file(fname, data)
file(fname, 'wb').write(data.encode('utf-8'))

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2016-09-22 07:03:14 -03:00

96 lines
2.4 KiB
ReStructuredText

.. -*- coding: utf-8; mode: rst -*-
.. _V4L2-PIX-FMT-NV24:
.. _V4L2-PIX-FMT-NV42:
******************************************************
V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')
******************************************************
V4L2_PIX_FMT_NV42
Formats with full horizontal and vertical chroma resolutions, also known
as YUV 4:4:4. One luminance and one chrominance plane with alternating
chroma samples as opposed to ``V4L2_PIX_FMT_YVU420``
Description
===========
These are two-plane versions of the YUV 4:4:4 format. The three
components are separated into two sub-images or planes. The Y plane is
first, with each Y sample stored in one byte per pixel. For
``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y
plane in memory. The CbCr plane has the same width and height, in
pixels, as the Y plane (and the image). Each line contains one CbCr pair
per pixel, with each Cb and Cr sample stored in one byte.
``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are
swapped, the CrCb plane starts with a Cr sample.
If the Y plane has pad bytes after each row, then the CbCr plane has
twice as many pad bytes after its rows.
**Byte Order.**
Each cell is one byte.
.. flat-table::
:header-rows: 0
:stub-columns: 0
* - start + 0:
- Y'\ :sub:`00`
- Y'\ :sub:`01`
- Y'\ :sub:`02`
- Y'\ :sub:`03`
* - start + 4:
- Y'\ :sub:`10`
- Y'\ :sub:`11`
- Y'\ :sub:`12`
- Y'\ :sub:`13`
* - start + 8:
- Y'\ :sub:`20`
- Y'\ :sub:`21`
- Y'\ :sub:`22`
- Y'\ :sub:`23`
* - start + 12:
- Y'\ :sub:`30`
- Y'\ :sub:`31`
- Y'\ :sub:`32`
- Y'\ :sub:`33`
* - start + 16:
- Cb\ :sub:`00`
- Cr\ :sub:`00`
- Cb\ :sub:`01`
- Cr\ :sub:`01`
- Cb\ :sub:`02`
- Cr\ :sub:`02`
- Cb\ :sub:`03`
- Cr\ :sub:`03`
* - start + 24:
- Cb\ :sub:`10`
- Cr\ :sub:`10`
- Cb\ :sub:`11`
- Cr\ :sub:`11`
- Cb\ :sub:`12`
- Cr\ :sub:`12`
- Cb\ :sub:`13`
- Cr\ :sub:`13`
* - start + 32:
- Cb\ :sub:`20`
- Cr\ :sub:`20`
- Cb\ :sub:`21`
- Cr\ :sub:`21`
- Cb\ :sub:`22`
- Cr\ :sub:`22`
- Cb\ :sub:`23`
- Cr\ :sub:`23`
* - start + 40:
- Cb\ :sub:`30`
- Cr\ :sub:`30`
- Cb\ :sub:`31`
- Cr\ :sub:`31`
- Cb\ :sub:`32`
- Cr\ :sub:`32`
- Cb\ :sub:`33`
- Cr\ :sub:`33`