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[media] v4l: Add V4L2_MBUS_FMT_JPEG_1X8 media bus format

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Add V4L2_MBUS_FMT_JPEG_1X8 format and the corresponding Docbook
documentation.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2011-03-25 12:09:43 -03:00 committed by Mauro Carvalho Chehab
parent f1703aa6ab
commit 16846524af
2 changed files with 49 additions and 0 deletions
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46
Documentation/DocBook/v4l/subdev-formats.xml
View file

@ -2522,5 +2522,51 @@
</tgroup> </tgroup>
</table> </table>
</section> </section>
<section>
<title>JPEG Compressed Formats</title>
<para>Those data formats consist of an ordered sequence of 8-bit bytes
obtained from JPEG compression process. Additionally to the
<constant>_JPEG</constant> prefix the format code is made of
the following information.
<itemizedlist>
<listitem>The number of bus samples per entropy encoded byte.</listitem>
<listitem>The bus width.</listitem>
</itemizedlist>
<para>For instance, for a JPEG baseline process and an 8-bit bus width
the format will be named <constant>V4L2_MBUS_FMT_JPEG_1X8</constant>.
</para>
</para>
<para>The following table lists existing JPEG compressed formats.</para>
<table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-jpeg">
<title>JPEG Formats</title>
<tgroup cols="3">
<colspec colname="id" align="left" />
<colspec colname="code" align="left"/>
<colspec colname="remarks" align="left"/>
<thead>
<row>
<entry>Identifier</entry>
<entry>Code</entry>
<entry>Remarks</entry>
</row>
</thead>
<tbody valign="top">
<row id="V4L2-MBUS-FMT-JPEG-1X8">
<entry>V4L2_MBUS_FMT_JPEG_1X8</entry>
<entry>0x4001</entry>
<entry>Besides of its usage for the parallel bus this format is
recommended for transmission of JPEG data over MIPI CSI bus
using the User Defined 8-bit Data types.
</entry>
</row>
</tbody>
</tgroup>
</table>
</section>
</section> </section>
</section> </section>

3
include/linux/v4l2-mediabus.h
View file

@ -89,6 +89,9 @@ enum v4l2_mbus_pixelcode {
V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010, V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010,
V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011, V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011,
V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012, V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012,
/* JPEG compressed formats - next is 0x4002 */
V4L2_MBUS_FMT_JPEG_1X8 = 0x4001,
}; };
/** /**