Hi Sylwester, On Thursday 24 March 2011 15:19:54 Sylwester Nawrocki wrote: > Add V4L2_MBUS_FMT_JPEG_1X8 format and the corresponding Docbook > documentation. > > Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> > Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > --- > > Hi all, > > I would like to propose and addition of JPEG format to the list > of media bus formats. The requirement of this format had already > been discussed in the past [1], [2]. > This patch adds relevant entry in v4l2-mediabus.h header and > the documentation. Initially I have added only bus width information > to the format code. I am not sure what other information could be > included. I am open to suggestions if anyone knows about any other > requirements. > > JPEG format on media bus is, among others, required for Samsung > S5P MIPI CSI receiver [3] and M-5MOLS camera drivers [4]. > > Comments are welcome! > > -- > Regards, > Sylwester Nawrocki, > Samsung Poland R&D Center > > [1] http://www.spinics.net/lists/linux-media/msg27980.html > [2] http://www.spinics.net/lists/linux-media/msg28651.html > [3] http://www.spinics.net/lists/linux-samsung-soc/msg03807.html > [4] http://lwn.net/Articles/433836/ > --- > Documentation/DocBook/v4l/subdev-formats.xml | 45 > ++++++++++++++++++++++++++ include/linux/v4l2-mediabus.h | > 3 ++ > 2 files changed, 48 insertions(+), 0 deletions(-) > > diff --git a/Documentation/DocBook/v4l/subdev-formats.xml > b/Documentation/DocBook/v4l/subdev-formats.xml index b5376e2..60a6fe2 > 100644 > --- a/Documentation/DocBook/v4l/subdev-formats.xml > +++ b/Documentation/DocBook/v4l/subdev-formats.xml > @@ -2463,5 +2463,50 @@ > </tgroup> > </table> > </section> > + > + <section> > + <title>JPEG Compressed Formats</title> > + > + <para>Those data formats are used to transfer arbitrary byte-based > image + data obtained from JPEG compression process. The format code > + is made of the following information. > + <itemizedlist> > + <listitem>The bus width in bits.</listitem> > + </itemizedlist> > + > + <para>For instance, a format where bus width is 8 bits 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="23"> > + <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> This format shall be used for of transmission of JPEG > + data over MIPI CSI-2 bus with User Defined 8-bit Data types. JPEG formats are not limited to MIPI, some parallel sensors can transmit JPEG as well. > + </entry> > + </row> > + > + </tbody> > + </tgroup> > + </table> > + </section> > </section> > </section> > diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h > index 7054a7a..15d6cda 100644 > --- a/include/linux/v4l2-mediabus.h > +++ b/include/linux/v4l2-mediabus.h > @@ -86,6 +86,9 @@ 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, > }; > > /** -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
