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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-YUV422P:
+
+*****************************
+V4L2_PIX_FMT_YUV422P ('422P')
+*****************************
+
+
+Format with ½ horizontal chroma resolution, also known as YUV 4:2:2.
+Planar layout as opposed to ``V4L2_PIX_FMT_YUYV``
+
+
+Description
+===========
+
+This format is not commonly used. This is a planar version of the YUYV
+format. The three components are separated into three sub-images or
+planes. The Y plane is first. The Y plane has one byte per pixel. The Cb
+plane immediately follows the Y plane in memory. The Cb plane is half
+the width of the Y plane (and of the image). Each Cb belongs to two
+pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`,
+Y'\ :sub:`01`. Following the Cb plane is the Cr plane, just like the Cb
+plane.
+
+If the Y plane has pad bytes after each row, then the Cr and Cb planes
+have half as many pad bytes after their rows. In other words, two Cx
+rows (including padding) is exactly as long as one Y row (including
+padding).
+
+**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`
+ - Cb\ :sub:`01`
+ * - start + 18:
+ - Cb\ :sub:`10`
+ - Cb\ :sub:`11`
+ * - start + 20:
+ - Cb\ :sub:`20`
+ - Cb\ :sub:`21`
+ * - start + 22:
+ - Cb\ :sub:`30`
+ - Cb\ :sub:`31`
+ * - start + 24:
+ - Cr\ :sub:`00`
+ - Cr\ :sub:`01`
+ * - start + 26:
+ - Cr\ :sub:`10`
+ - Cr\ :sub:`11`
+ * - start + 28:
+ - Cr\ :sub:`20`
+ - Cr\ :sub:`21`
+ * - start + 30:
+ - Cr\ :sub:`30`
+ - Cr\ :sub:`31`
+
+
+**Color Sample Location:**
+
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * -
+ - 0
+ -
+ - 1
+ - 2
+ -
+ - 3
+ * - 0
+ - Y
+ - C
+ - Y
+ - Y
+ - C
+ - Y
+ * - 1
+ - Y
+ - C
+ - Y
+ - Y
+ - C
+ - Y
+ * - 2
+ - Y
+ - C
+ - Y
+ - Y
+ - C
+ - Y
+ * - 3
+ - Y
+ - C
+ - Y
+ - Y
+ - C
+ - Y