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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _V4L2-PIX-FMT-NV16:
+.. _V4L2-PIX-FMT-NV61:
+
+******************************************************
+V4L2_PIX_FMT_NV16 ('NV16'), V4L2_PIX_FMT_NV61 ('NV61')
+******************************************************
+
+V4L2_PIX_FMT_NV61
+Formats with ½ horizontal chroma resolution, also known as YUV 4:2:2.
+One luminance and one chrominance plane with alternating chroma samples
+as opposed to ``V4L2_PIX_FMT_YVU420``
+
+
+Description
+===========
+
+These are two-plane versions of the YUV 4:2:2 format. The three
+components are separated into two sub-images or planes. The Y plane is
+first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_NV16``, a
+combined CbCr plane immediately follows the Y plane in memory. The CbCr
+plane is the same width and height, in bytes, as the Y plane (and of the
+image). Each CbCr pair belongs to two pixels. For example,
+Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`.
+``V4L2_PIX_FMT_NV61`` is the same except the Cb and Cr bytes are
+swapped, the CrCb plane starts with a Cr byte.
+
+If the Y plane has pad bytes after each row, then the CbCr plane has as
+many pad bytes after its rows.
+
+**Byte Order.**
+Each cell is one byte.
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * - start + 0:
+ - Y'\ :sub:`00`
+ - Y'\ :sub:`01`
+ - Y'\ :sub:`02`
+ - Y'\ :sub:`03`
+ * - start + 4:
+ - Y'\ :sub:`10`
+ - Y'\ :sub:`11`
+ - Y'\ :sub:`12`
+ - Y'\ :sub:`13`
+ * - start + 8:
+ - Y'\ :sub:`20`
+ - Y'\ :sub:`21`
+ - Y'\ :sub:`22`
+ - Y'\ :sub:`23`
+ * - start + 12:
+ - Y'\ :sub:`30`
+ - Y'\ :sub:`31`
+ - Y'\ :sub:`32`
+ - Y'\ :sub:`33`
+ * - start + 16:
+ - Cb\ :sub:`00`
+ - Cr\ :sub:`00`
+ - Cb\ :sub:`01`
+ - Cr\ :sub:`01`
+ * - start + 20:
+ - Cb\ :sub:`10`
+ - Cr\ :sub:`10`
+ - Cb\ :sub:`11`
+ - Cr\ :sub:`11`
+ * - start + 24:
+ - Cb\ :sub:`20`
+ - Cr\ :sub:`20`
+ - Cb\ :sub:`21`
+ - Cr\ :sub:`21`
+ * - start + 28:
+ - Cb\ :sub:`30`
+ - Cr\ :sub:`30`
+ - Cb\ :sub:`31`
+ - Cr\ :sub:`31`
+
+
+**Color Sample Location:**
+
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * -
+ - 0
+ -
+ - 1
+ - 2
+ -
+ - 3
+ * - 0
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ - C
+ -
+ * - 1
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ - C
+ -
+ * -
+ * - 2
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ - C
+ -
+ * - 3
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ - C
+ -