Hi Hans,
On Friday 11 Nov 2016 14:24:41 Hans Verkuil wrote:
> On 11/09/2016 04:44 PM, Ramesh Shanmugasundaram wrote:
> > This patch adds support for the three new SDR formats. These formats
> > were prefixed with "sliced" indicating I data constitutes the top half and
> > Q data constitutes the bottom half of the received buffer.
>
> The standard terminology for video formats is "planar". I am leaning towards
> using that here as well.
Another important question is whether we should introduce an SDR planar API.
That's what we would like your opinion on.
> > V4L2_SDR_FMT_SCU16BE - 14-bit complex (I & Q) unsigned big-endian sample
> > inside 16-bit. V4L2 FourCC: SC16
> >
> > V4L2_SDR_FMT_SCU18BE - 16-bit complex (I & Q) unsigned big-endian sample
> > inside 18-bit. V4L2 FourCC: SC18
> >
> > V4L2_SDR_FMT_SCU20BE - 18-bit complex (I & Q) unsigned big-endian sample
> > inside 20-bit. V4L2 FourCC: SC20
> >
> > Signed-off-by: Ramesh Shanmugasundaram
> > <ramesh.shanmugasundaram@xxxxxxxxxxxxxx> ---
> >
> > drivers/media/v4l2-core/v4l2-ioctl.c | 3 +++
> > include/uapi/linux/videodev2.h | 3 +++
> > 2 files changed, 6 insertions(+)
> >
> > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c
> > b/drivers/media/v4l2-core/v4l2-ioctl.c index 181381d..d36b386 100644
> > --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> > @@ -1207,6 +1207,9 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc
> > *fmt)>
> > case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
> > case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
> > case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
> >
> > + case V4L2_SDR_FMT_SCU16BE: descr = "Sliced Complex U16BE"; break;
> > + case V4L2_SDR_FMT_SCU18BE: descr = "Sliced Complex U18BE"; break;
> > + case V4L2_SDR_FMT_SCU20BE: descr = "Sliced Complex U20BE"; break;
> >
> > case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit signed deltas"; break;
> > case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit signed deltas"; break;
> > case V4L2_TCH_FMT_TU16: descr = "16-bit unsigned touch data";
break;
> >
> > diff --git a/include/uapi/linux/videodev2.h
> > b/include/uapi/linux/videodev2.h index 4364ce6..34a9c30 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -666,6 +666,9 @@ struct v4l2_pix_format {
> >
> > #define V4L2_SDR_FMT_CS8 v4l2_fourcc('C', 'S', '0', '8') /*
> > complex s8 */ #define V4L2_SDR_FMT_CS14LE v4l2_fourcc('C', 'S',
> > '1', '4') /* complex s14le */ #define V4L2_SDR_FMT_RU12LE
> > v4l2_fourcc('R', 'U', '1', '2') /* real u12le */>
> > +#define V4L2_SDR_FMT_SCU16BE v4l2_fourcc('S', 'C', '1', '6') /*
sliced
> > complex u16be */ +#define V4L2_SDR_FMT_SCU18BE v4l2_fourcc('S',
'C',
> > '1', '8') /* sliced complex u18be */ +#define V4L2_SDR_FMT_SCU20BE
> > v4l2_fourcc('S', 'C', '2', '0') /* sliced complex u20be */>
> > /* Touch formats - used for Touch devices */
> > #define V4L2_TCH_FMT_DELTA_TD16 v4l2_fourcc('T', 'D', '1', '6') /* 16-
bit
> > signed deltas */
--
Regards,
Laurent Pinchart
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