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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst')
-rw-r--r-- | Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst new file mode 100644 index 000000000..485343cdf --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst @@ -0,0 +1,55 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _V4L2-SDR-FMT-PCU20BE: + +****************************** +V4L2_SDR_FMT_PCU20BE ('PC20') +****************************** + +Planar complex unsigned 20-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 20 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 20 bits, bit 19:2 (18 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[19:12]` + - I'\ :sub:`0[11:4]` + - I'\ :sub:`0[3:0]; B2[3:0]=pad` + - pad + * - start + 4: + - I'\ :sub:`1[19:12]` + - I'\ :sub:`1[11:4]` + - I'\ :sub:`1[3:0]; B2[3:0]=pad` + - pad + * - ... + * - start + offset: + - Q'\ :sub:`0[19:12]` + - Q'\ :sub:`0[11:4]` + - Q'\ :sub:`0[3:0]; B2[3:0]=pad` + - pad + * - start + offset + 4: + - Q'\ :sub:`1[19:12]` + - Q'\ :sub:`1[11:4]` + - Q'\ :sub:`1[3:0]; B2[3:0]=pad` + - pad |