On 07/15/2016 08:11 PM, Laurent Pinchart wrote: > Hi Ricardo, > > Thank you for the patch. > > On Friday 15 Jul 2016 18:13:15 Ricardo Ribalda Delgado wrote: >> Describe the HSV formats >> >> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx> >> --- >> Documentation/media/uapi/v4l/hsv-formats.rst | 19 ++ >> Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst | 253 ++++++++++++++++++ >> Documentation/media/uapi/v4l/pixfmt.rst | 1 + >> Documentation/media/uapi/v4l/v4l2.rst | 5 + >> 4 files changed, 278 insertions(+) >> create mode 100644 Documentation/media/uapi/v4l/hsv-formats.rst >> create mode 100644 Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst >> >> diff --git a/Documentation/media/uapi/v4l/hsv-formats.rst >> b/Documentation/media/uapi/v4l/hsv-formats.rst new file mode 100644 >> index 000000000000..f0f2615eaa95 >> --- /dev/null >> +++ b/Documentation/media/uapi/v4l/hsv-formats.rst >> @@ -0,0 +1,19 @@ >> +.. -*- coding: utf-8; mode: rst -*- >> + >> +.. _hsv-formats: >> + >> +*********** >> +HSV Formats >> +*********** >> + >> +These formats store the color information of the image >> +in a geometrical representation. The colors are mapped into a >> +cylinder, where the angle is the HUE, the height is the VALUE >> +and the distance to the center is the SATURATION. This is a very >> +useful format for image segmentation algorithms. >> + >> + >> +.. toctree:: >> + :maxdepth: 1 >> + >> + pixfmt-packed-hsv >> diff --git a/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst >> b/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst new file mode 100644 >> index 000000000000..b297aa4f7ba6 >> --- /dev/null >> +++ b/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst >> @@ -0,0 +1,253 @@ >> +.. -*- coding: utf-8; mode: rst -*- >> + >> +.. _packed-hsv: >> + >> +****************** >> +Packed HSV formats >> +****************** >> + >> +*man Packed HSV formats(2)* >> + >> +Packed HSV formats >> + >> + >> +Description >> +=========== >> + >> +The HUE (h) is meassured in degrees, one LSB represents two degrees. > > Is this common ? I have a device that can handle HSV data, I need to check how > it maps the hue values to binary, but I'm pretty sure they cover the full > 0-255 range. We would then have to support the two formats. Separate 4CCs are > an option, but reporting the range separately (possibly through the colorspace > API) might be better. Any thought on that ? It's either a separate 4cc or we do something with the ycbcr_enc field (reinterpreted as hsv_enc). I'm not sure, I would have to think some more about that. Regards, Hans -- 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
