Documentation/media/uapi/v4l/pixfmt-y12i.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _V4L2-PIX-FMT-Y12I:
   4
   5 **************************
   6 V4L2_PIX_FMT_Y12I ('Y12I')
   7 **************************
   8
   9 Interleaved grey-scale image, e.g. from a stereo-pair
  10
  11
  12 Description
  13 ===========
  14
  15 This is a grey-scale image with a depth of 12 bits per pixel, but with
  16 pixels from 2 sources interleaved and bit-packed. Each pixel is stored
  17 in a 24-bit word in the little-endian order. On a little-endian machine
  18 these pixels can be deinterlaced using
  19
  20 .. code-block:: c
  21
  22     __u8 *buf;
  23     left0 = 0xfff & *(__u16 *)buf;
  24     right0 = *(__u16 *)(buf + 1) >> 4;
  25
  26 **Bit-packed representation.**
  27 pixels cross the byte boundary and have a ratio of 3 bytes for each
  28 interleaved pixel.
  29
  30 .. flat-table::
  31     :header-rows:  0
  32     :stub-columns: 0
  33
  34
  35     -  .. row 1
  36
  37        -  Y'\ :sub:`0left[7:0]`
  38
  39        -  Y'\ :sub:`0right[3:0]`\ Y'\ :sub:`0left[11:8]`
  40
  41        -  Y'\ :sub:`0right[11:4]`