xref: /OK3568_Linux_fs/kernel/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun.. _V4L2-SDR-FMT-CS14LE:
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun****************************
6*4882a593SmuzhiyunV4L2_SDR_FMT_CS14LE ('CS14')
7*4882a593Smuzhiyun****************************
8*4882a593Smuzhiyun
9*4882a593SmuzhiyunComplex signed 14-bit little endian IQ sample
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun
12*4882a593SmuzhiyunDescription
13*4882a593Smuzhiyun===========
14*4882a593Smuzhiyun
15*4882a593SmuzhiyunThis format contains sequence of complex number samples. Each complex
16*4882a593Smuzhiyunnumber consist two parts, called In-phase and Quadrature (IQ). Both I
17*4882a593Smuzhiyunand Q are represented as a 14 bit signed little endian number. I value
18*4882a593Smuzhiyuncomes first and Q value after that. 14 bit value is stored in 16 bit
19*4882a593Smuzhiyunspace with unused high bits padded with 0.
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun**Byte Order.**
22*4882a593SmuzhiyunEach cell is one byte.
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun.. flat-table::
26*4882a593Smuzhiyun    :header-rows:  0
27*4882a593Smuzhiyun    :stub-columns: 0
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun    * - start + 0:
30*4882a593Smuzhiyun      - I'\ :sub:`0[7:0]`
31*4882a593Smuzhiyun      - I'\ :sub:`0[13:8]`
32*4882a593Smuzhiyun    * - start + 2:
33*4882a593Smuzhiyun      - Q'\ :sub:`0[7:0]`
34*4882a593Smuzhiyun      - Q'\ :sub:`0[13:8]`
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