mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
c2b66cafdf
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>
128 lines
2.3 KiB
ReStructuredText
128 lines
2.3 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _V4L2-PIX-FMT-YVU410:
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.. _v4l2-pix-fmt-yuv410:
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**********************************************************
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V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9')
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**********************************************************
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V4L2_PIX_FMT_YUV410
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Planar formats with ¼ horizontal and vertical chroma resolution, also
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known as YUV 4:1:0
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Description
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===========
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These are planar formats, as opposed to a packed format. The three
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components are separated into three sub-images or planes. The Y plane is
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first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_YVU410``,
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the Cr plane immediately follows the Y plane in memory. The Cr plane is
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¼ the width and ¼ the height of the Y plane (and of the image). Each Cr
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belongs to 16 pixels, a four-by-four square of the image. Following the
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Cr plane is the Cb plane, just like the Cr plane.
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``V4L2_PIX_FMT_YUV410`` is the same, except the Cb plane comes first,
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then the Cr plane.
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If the Y plane has pad bytes after each row, then the Cr and Cb planes
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have ¼ as many pad bytes after their rows. In other words, four Cx rows
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(including padding) are exactly as long as one Y row (including
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padding).
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**Byte Order.**
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Each cell is one byte.
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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* - start + 0:
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- Y'\ :sub:`00`
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- Y'\ :sub:`01`
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- Y'\ :sub:`02`
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- Y'\ :sub:`03`
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* - start + 4:
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- Y'\ :sub:`10`
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- Y'\ :sub:`11`
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- Y'\ :sub:`12`
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- Y'\ :sub:`13`
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* - start + 8:
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- Y'\ :sub:`20`
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- Y'\ :sub:`21`
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- Y'\ :sub:`22`
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- Y'\ :sub:`23`
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* - start + 12:
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- Y'\ :sub:`30`
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- Y'\ :sub:`31`
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- Y'\ :sub:`32`
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- Y'\ :sub:`33`
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* - start + 16:
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- Cr\ :sub:`00`
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* - start + 17:
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- Cb\ :sub:`00`
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**Color Sample Location..**
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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* -
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- 0
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-
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- 1
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-
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- 2
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-
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- 3
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* - 0
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- Y
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-
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- Y
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-
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- Y
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-
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- Y
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* -
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* - 1
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- Y
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-
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- Y
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-
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- Y
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-
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- Y
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* -
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-
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-
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-
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- C
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-
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-
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-
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* - 2
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- Y
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-
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- Y
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-
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- Y
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-
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- Y
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* -
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* - 3
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- Y
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-
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- Y
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-
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- Y
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-
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- Y
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