1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun.. _V4L2-SDR-FMT-PCU16BE: 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun****************************** 6*4882a593SmuzhiyunV4L2_SDR_FMT_PCU16BE ('PC16') 7*4882a593Smuzhiyun****************************** 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunPlanar complex unsigned 16-bit big endian IQ sample 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunDescription 12*4882a593Smuzhiyun=========== 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunThis format contains a sequence of complex number samples. Each complex 15*4882a593Smuzhiyunnumber consist of two parts called In-phase and Quadrature (IQ). Both I 16*4882a593Smuzhiyunand Q are represented as a 16 bit unsigned big endian number stored in 17*4882a593Smuzhiyun32 bit space. The remaining unused bits within the 32 bit space will be 18*4882a593Smuzhiyunpadded with 0. I value starts first and Q value starts at an offset 19*4882a593Smuzhiyunequalling half of the buffer size (i.e.) offset = buffersize/2. Out of 20*4882a593Smuzhiyunthe 16 bits, bit 15:2 (14 bit) is data and bit 1:0 (2 bit) can be any 21*4882a593Smuzhiyunvalue. 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun**Byte Order.** 24*4882a593SmuzhiyunEach cell is one byte. 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun.. flat-table:: 27*4882a593Smuzhiyun :header-rows: 1 28*4882a593Smuzhiyun :stub-columns: 0 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun * - Offset: 31*4882a593Smuzhiyun - Byte B0 32*4882a593Smuzhiyun - Byte B1 33*4882a593Smuzhiyun - Byte B2 34*4882a593Smuzhiyun - Byte B3 35*4882a593Smuzhiyun * - start + 0: 36*4882a593Smuzhiyun - I'\ :sub:`0[13:6]` 37*4882a593Smuzhiyun - I'\ :sub:`0[5:0]; B1[1:0]=pad` 38*4882a593Smuzhiyun - pad 39*4882a593Smuzhiyun - pad 40*4882a593Smuzhiyun * - start + 4: 41*4882a593Smuzhiyun - I'\ :sub:`1[13:6]` 42*4882a593Smuzhiyun - I'\ :sub:`1[5:0]; B1[1:0]=pad` 43*4882a593Smuzhiyun - pad 44*4882a593Smuzhiyun - pad 45*4882a593Smuzhiyun * - ... 46*4882a593Smuzhiyun * - start + offset: 47*4882a593Smuzhiyun - Q'\ :sub:`0[13:6]` 48*4882a593Smuzhiyun - Q'\ :sub:`0[5:0]; B1[1:0]=pad` 49*4882a593Smuzhiyun - pad 50*4882a593Smuzhiyun - pad 51*4882a593Smuzhiyun * - start + offset + 4: 52*4882a593Smuzhiyun - Q'\ :sub:`1[13:6]` 53*4882a593Smuzhiyun - Q'\ :sub:`1[5:0]; B1[1:0]=pad` 54*4882a593Smuzhiyun - pad 55*4882a593Smuzhiyun - pad 56