2016-06-30 20:18:56 +07:00
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.. -*- coding: utf-8; mode: rst -*-
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.. _v4l2-selection-flags:
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***************
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Selection flags
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***************
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2016-08-19 17:34:13 +07:00
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.. tabularcolumns:: |p{5.2cm}|p{2.0cm}|p{6.5cm}|p{1.2cm}|p{1.6cm}|
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2016-06-30 20:18:56 +07:00
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.. _v4l2-selection-flags-table:
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.. flat-table:: Selection flag definitions
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:header-rows: 1
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:stub-columns: 0
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[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>
2016-09-05 18:44:34 +07:00
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* - Flag name
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- id
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- Definition
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- Valid for V4L2
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- Valid for V4L2 subdev
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* - ``V4L2_SEL_FLAG_GE``
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- (1 << 0)
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- Suggest the driver it should choose greater or equal rectangle (in
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size) than was requested. Albeit the driver may choose a lesser
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size, it will only do so due to hardware limitations. Without this
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flag (and ``V4L2_SEL_FLAG_LE``) the behaviour is to choose the
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closest possible rectangle.
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- Yes
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- Yes
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* - ``V4L2_SEL_FLAG_LE``
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- (1 << 1)
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- Suggest the driver it should choose lesser or equal rectangle (in
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size) than was requested. Albeit the driver may choose a greater
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size, it will only do so due to hardware limitations.
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- Yes
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- Yes
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* - ``V4L2_SEL_FLAG_KEEP_CONFIG``
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- (1 << 2)
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- The configuration must not be propagated to any further processing
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steps. If this flag is not given, the configuration is propagated
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inside the subdevice to all further processing steps.
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- No
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- Yes
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