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kernel_samsung_sm7125/Documentation/media/uapi/v4l/pixfmt-compressed.rst

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doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
9 years ago
.. -*- coding: utf-8; mode: rst -*-
******************
Compressed Formats
******************
.. _compressed-formats:
[media] docs-rst: add tabularcolumns to all tables LaTeX doesn't handle too well auto-width on tables, and ReST markup requires an special tag to give it the needed hints. As we're using A4 paper, we have 17cm of useful spaces. As most media tables have widths, let's use it to generate the needed via the following perl script: my ($line_size, $table_header, $has_cols) = (17.5, 0, 0); my $out; my $header = ""; my @widths = (); sub round { $_[0] > 0 ? int($_[0] + .5) : -int(-$_[0] + .5) } while (<>) { if (!$table_header) { $has_cols = 1 if (m/..\s+tabularcolumns::/); if (m/..\s+flat-table::/) { $table_header = 1; $header = $_; next; } $out .= $_; next; } $header .= $_; @widths = split(/ /, $1) if (m/:widths:\s+(.*)/); if (m/^\n$/) { if (!$has_cols && @widths) { my ($tot, $t, $i) = (0, 0, 0); foreach my $v(@widths) { $tot += $v; }; $out .= ".. tabularcolumns:: |"; for ($i = 0; $i < scalar @widths - 1; $i++) { my $v = $widths[$i]; my $w = round(10 * ($v * $line_size) / $tot) / 10; $out .= sprintf "p{%.1fcm}|", $w; $t += $w; } my $w = $line_size - $t; $out .= sprintf "p{%.1fcm}|\n\n", $w; } $out .= $header; $table_header = 0; $has_cols = 0; $header = ""; @widths = (); } } print $out; Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
9 years ago
.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
9 years ago
.. flat-table:: Compressed Image Formats
:header-rows: 1
:stub-columns: 0
:widths: 3 1 4
[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>
9 years ago
* - Identifier
- Code
- Details
* .. _V4L2-PIX-FMT-JPEG:
- ``V4L2_PIX_FMT_JPEG``
- 'JPEG'
- TBD. See also :ref:`VIDIOC_G_JPEGCOMP <VIDIOC_G_JPEGCOMP>`,
:ref:`VIDIOC_S_JPEGCOMP <VIDIOC_G_JPEGCOMP>`.
* .. _V4L2-PIX-FMT-MPEG:
- ``V4L2_PIX_FMT_MPEG``
- 'MPEG'
- MPEG multiplexed stream. The actual format is determined by
extended control ``V4L2_CID_MPEG_STREAM_TYPE``, see
:ref:`mpeg-control-id`.
* .. _V4L2-PIX-FMT-H264:
- ``V4L2_PIX_FMT_H264``
- 'H264'
- H264 video elementary stream with start codes.
* .. _V4L2-PIX-FMT-H264-NO-SC:
- ``V4L2_PIX_FMT_H264_NO_SC``
- 'AVC1'
- H264 video elementary stream without start codes.
* .. _V4L2-PIX-FMT-H264-MVC:
- ``V4L2_PIX_FMT_H264_MVC``
- 'M264'
- H264 MVC video elementary stream.
* .. _V4L2-PIX-FMT-H263:
- ``V4L2_PIX_FMT_H263``
- 'H263'
- H263 video elementary stream.
* .. _V4L2-PIX-FMT-MPEG1:
- ``V4L2_PIX_FMT_MPEG1``
- 'MPG1'
- MPEG1 video elementary stream.
* .. _V4L2-PIX-FMT-MPEG2:
- ``V4L2_PIX_FMT_MPEG2``
- 'MPG2'
- MPEG2 video elementary stream.
* .. _V4L2-PIX-FMT-MPEG4:
- ``V4L2_PIX_FMT_MPEG4``
- 'MPG4'
- MPEG4 video elementary stream.
* .. _V4L2-PIX-FMT-XVID:
- ``V4L2_PIX_FMT_XVID``
- 'XVID'
- Xvid video elementary stream.
* .. _V4L2-PIX-FMT-VC1-ANNEX-G:
- ``V4L2_PIX_FMT_VC1_ANNEX_G``
- 'VC1G'
- VC1, SMPTE 421M Annex G compliant stream.
* .. _V4L2-PIX-FMT-VC1-ANNEX-L:
- ``V4L2_PIX_FMT_VC1_ANNEX_L``
- 'VC1L'
- VC1, SMPTE 421M Annex L compliant stream.
* .. _V4L2-PIX-FMT-VP8:
- ``V4L2_PIX_FMT_VP8``
- 'VP80'
- VP8 video elementary stream.
[media] Add documentation for V4L2_PIX_FMT_VP9 Add documentation for V4L2_PIX_FMT_VP9. Signed-off-by: Tiffany Lin <tiffany.lin@mediatek.com> Signed-off-by: Wu-Cheng Li <wuchengli@chromium.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
9 years ago
* .. _V4L2-PIX-FMT-VP9:
- ``V4L2_PIX_FMT_VP9``
- 'VP90'
- VP9 video elementary stream.