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Commit 5df082e2 authored by Evgeni Raikhel's avatar Evgeni Raikhel Committed by Mauro Carvalho Chehab
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[media] Documentation: Intel SR300 Depth camera INZI format 



Provide the frame structure and data layout of V4L2-PIX-FMT-INZI
format utilized by Intel SR300 Depth camera.

Signed-off-by: default avatarEvgeni Raikhel <evgeni.raikhel@intel.com>
Acked-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 52276df0

Documentation/media/uapi/v4l/depth-formats.rst

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@@ -12,4 +12,5 @@ Depth data provides distance to points, mapped onto the image plane 
.. toctree::

    :maxdepth: 1



    pixfmt-inzi

    pixfmt-z16

Documentation/media/uapi/v4l/pixfmt-inzi.rst

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.. -*- coding: utf-8; mode: rst -*-



.. _V4L2-PIX-FMT-INZI:



**************************

V4L2_PIX_FMT_INZI ('INZI')

**************************



Infrared 10-bit linked with Depth 16-bit images





Description

===========



Proprietary multi-planar format used by Intel SR300 Depth cameras, comprise of

Infrared image followed by Depth data. The pixel definition is 32-bpp,

with the Depth and Infrared Data split into separate continuous planes of

identical dimensions.







The first plane - Infrared data - is stored according to

:ref:`V4L2_PIX_FMT_Y10 <V4L2-PIX-FMT-Y10>` greyscale format.

Each pixel is 16-bit cell, with actual data stored in the 10 LSBs

with values in range 0 to 1023.

The six remaining MSBs are padded with zeros.





The second plane provides 16-bit per-pixel Depth data arranged in

:ref:`V4L2-PIX-FMT-Z16 <V4L2-PIX-FMT-Z16>` format.





**Frame Structure.**

Each cell is a 16-bit word with more significant data stored at higher

memory address (byte order is little-endian).



.. raw:: latex



    \newline\newline\begin{adjustbox}{width=\columnwidth}



.. tabularcolumns:: |p{4.0cm}|p{4.0cm}|p{4.0cm}|p{4.0cm}|p{4.0cm}|p{4.0cm}|



.. flat-table::

    :header-rows:  0

    :stub-columns: 1

    :widths:    1 1 1 1 1 1



    * - Ir\ :sub:`0,0`

      - Ir\ :sub:`0,1`

      - Ir\ :sub:`0,2`

      - ...

      - ...

      - ...

    * - :cspan:`5` ...

    * - :cspan:`5` Infrared Data

    * - :cspan:`5` ...

    * - ...

      - ...

      - ...

      - Ir\ :sub:`n-1,n-3`

      - Ir\ :sub:`n-1,n-2`

      - Ir\ :sub:`n-1,n-1`

    * - Depth\ :sub:`0,0`

      - Depth\ :sub:`0,1`

      - Depth\ :sub:`0,2`

      - ...

      - ...

      - ...

    * - :cspan:`5` ...

    * - :cspan:`5` Depth Data

    * - :cspan:`5` ...

    * - ...

      - ...

      - ...

      - Depth\ :sub:`n-1,n-3`

      - Depth\ :sub:`n-1,n-2`

      - Depth\ :sub:`n-1,n-1`



.. raw:: latex



    \end{adjustbox}\newline\newline

drivers/media/v4l2-core/v4l2-ioctl.c

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@@ -1131,6 +1131,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 
	case V4L2_PIX_FMT_Y8I:		descr = "Interleaved 8-bit Greyscale"; break;

	case V4L2_PIX_FMT_Y12I:		descr = "Interleaved 12-bit Greyscale"; break;

	case V4L2_PIX_FMT_Z16:		descr = "16-bit Depth"; break;

	case V4L2_PIX_FMT_INZI:		descr = "Planar 10:16 Greyscale Depth"; break;

	case V4L2_PIX_FMT_PAL8:		descr = "8-bit Palette"; break;

	case V4L2_PIX_FMT_UV8:		descr = "8-bit Chrominance UV 4-4"; break;

	case V4L2_PIX_FMT_YVU410:	descr = "Planar YVU 4:1:0"; break;

include/uapi/linux/videodev2.h

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@@ -660,6 +660,7 @@ struct v4l2_pix_format { 
#define V4L2_PIX_FMT_Y12I     v4l2_fourcc('Y', '1', '2', 'I') /* Greyscale 12-bit L/R interleaved */

#define V4L2_PIX_FMT_Z16      v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */

#define V4L2_PIX_FMT_MT21C    v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode  */

#define V4L2_PIX_FMT_INZI     v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */



/* SDR formats - used only for Software Defined Radio devices */

#define V4L2_SDR_FMT_CU8          v4l2_fourcc('C', 'U', '0', '8') /* IQ u8 */