| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _V4L2-PIX-FMT-Y12I: |
| |
| ************************** |
| V4L2_PIX_FMT_Y12I ('Y12I') |
| ************************** |
| |
| *man V4L2_PIX_FMT_Y12I(2)* |
| |
| Interleaved grey-scale image, e.g. from a stereo-pair |
| |
| |
| Description |
| =========== |
| |
| This is a grey-scale image with a depth of 12 bits per pixel, but with |
| pixels from 2 sources interleaved and bit-packed. Each pixel is stored |
| in a 24-bit word in the little-endian order. On a little-endian machine |
| these pixels can be deinterlaced using |
| |
| .. code-block:: c |
| |
| __u8 *buf; |
| left0 = 0xfff & *(__u16 *)buf; |
| right0 = *(__u16 *)(buf + 1) >> 4; |
| |
| **Bit-packed representation.** |
| pixels cross the byte boundary and have a ratio of 3 bytes for each |
| interleaved pixel. |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| :widths: 2 1 1 |
| |
| |
| - .. row 1 |
| |
| - Y'\ :sub:`0left[7:0]` |
| |
| - Y'\ :sub:`0right[3:0]`\ Y'\ :sub:`0left[11:8]` |
| |
| - Y'\ :sub:`0right[11:4]` |
