diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst new file mode 100644 index 000000000..2de1b1a0f --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst @@ -0,0 +1,55 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _V4L2-SDR-FMT-PCU16BE: + +****************************** +V4L2_SDR_FMT_PCU16BE ('PC16') +****************************** + +Planar complex unsigned 16-bit big endian IQ sample + +Description +=========== + +This format contains a sequence of complex number samples. Each complex +number consist of two parts called In-phase and Quadrature (IQ). Both I +and Q are represented as a 16 bit unsigned big endian number stored in +32 bit space. The remaining unused bits within the 32 bit space will be +padded with 0. I value starts first and Q value starts at an offset +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of +the 16 bits, bit 15:2 (14 bit) is data and bit 1:0 (2 bit) can be any +value. + +**Byte Order.** +Each cell is one byte. + +.. flat-table:: + :header-rows: 1 + :stub-columns: 0 + + * - Offset: + - Byte B0 + - Byte B1 + - Byte B2 + - Byte B3 + * - start + 0: + - I'\ :sub:`0[13:6]` + - I'\ :sub:`0[5:0]; B1[1:0]=pad` + - pad + - pad + * - start + 4: + - I'\ :sub:`1[13:6]` + - I'\ :sub:`1[5:0]; B1[1:0]=pad` + - pad + - pad + * - ... + * - start + offset: + - Q'\ :sub:`0[13:6]` + - Q'\ :sub:`0[5:0]; B1[1:0]=pad` + - pad + - pad + * - start + offset + 4: + - Q'\ :sub:`1[13:6]` + - Q'\ :sub:`1[5:0]; B1[1:0]=pad` + - pad + - pad |