Commit 16846524 authored by Sylwester Nawrocki's avatar Sylwester Nawrocki Committed by Mauro Carvalho Chehab
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[media] v4l: Add V4L2_MBUS_FMT_JPEG_1X8 media bus format 



Add V4L2_MBUS_FMT_JPEG_1X8 format and the corresponding Docbook
documentation.

Signed-off-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent f1703aa6

Documentation/DocBook/v4l/subdev-formats.xml

+46 −0
Original line number Diff line number Diff line
@@ -2522,5 +2522,51 @@ 
	</tgroup>

      </table>

    </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>

include/linux/v4l2-mediabus.h

+3 −0
Original line number Diff line number Diff line
@@ -89,6 +89,9 @@ enum v4l2_mbus_pixelcode { 
	V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010,

	V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011,

	V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012,



	/* JPEG compressed formats - next is 0x4002 */

	V4L2_MBUS_FMT_JPEG_1X8 = 0x4001,

};



/**