The pixfmt-packed-yuv.rst file documents packed YUV 4:4:4 formats, but
is titled generically as "Packed YUV formats". 4:2:2 and 4:1:1 packed
YUV formats are documented in separate files, which can be confusing.
Group all packed YUV formats in pixfmt-packed-yuv.rst, which allows
documenting the 4:2:2 formats in a more concise way.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
.../media/v4l/pixfmt-packed-yuv.rst | 147 +++++++++++++++++-
.../userspace-api/media/v4l/pixfmt-uyvy.rst | 70 ---------
.../userspace-api/media/v4l/pixfmt-vyuy.rst | 70 ---------
.../userspace-api/media/v4l/pixfmt-y41p.rst | 93 -----------
.../userspace-api/media/v4l/pixfmt-yuyv.rst | 73 ---------
.../userspace-api/media/v4l/pixfmt-yvyu.rst | 70 ---------
.../userspace-api/media/v4l/yuv-formats.rst | 5 -
7 files changed, 140 insertions(+), 388 deletions(-)
delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst
delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst
delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y41p.rst
delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst
delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
index 84262208dd1c..8ed1a6aff3a6 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
@@ -6,12 +6,16 @@
Packed YUV formats
******************
-Description
-===========
+Similarly to the packed RGB formats, the packed YUV formats store the Y, Cb and
+Cr components consecutively in memory. They may apply subsampling to the chroma
+components and thus differ in how they interlave the three components.
-Similar to the packed RGB formats these formats store the Y, Cb and Cr
-component of each pixel in one 16 or 32 bit word.
+4:4:4 Subsampling
+=================
+
+These formats do not subsample the chroma components and store each pixels as a
+full triplet of Y, Cb and Cr values.
.. raw:: latex
@@ -19,11 +23,9 @@ component of each pixel in one 16 or 32 bit word.
\tiny
\setlength{\tabcolsep}{2pt}
-.. _packed-yuv-formats:
-
.. tabularcolumns:: |p{2.5cm}|p{0.69cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|
-.. flat-table:: Packed YUV Image Formats
+.. flat-table:: Packed YUV 4:4:4 Image Formats
:header-rows: 2
:stub-columns: 0
@@ -371,3 +373,134 @@ component of each pixel in one 16 or 32 bit word.
expected to contain a meaningful value that can be used by drivers
and applications. And, the formats XYUV32 and VUYX32 contain undefined
alpha values that must be ignored by all applications and drivers.
+
+
+4:2:2 Subsampling
+=================
+
+These formats, commonly referred to as YUYV or YUY2, subsample the chroma
+components horizontally by 2, storing 2 pixels in 4 bytes.
+
+.. flat-table:: Packed YUV 4:2:2 Formats
+ :header-rows: 1
+ :stub-columns: 0
+
+ * - Identifier
+ - Code
+ - Byte 0
+ - Byte 1
+ - Byte 2
+ - Byte 3
+ - Byte 4
+ - Byte 5
+ - Byte 6
+ - Byte 7
+ * .. _V4L2-PIX-FMT-UYVY:
+
+ - ``V4L2_PIX_FMT_UYVY``
+ - 'UYVY'
+
+ - Cb\ :sub:`0`
+ - Y'\ :sub:`0`
+ - Cr\ :sub:`0`
+ - Y'\ :sub:`1`
+ - Cb\ :sub:`2`
+ - Y'\ :sub:`2`
+ - Cr\ :sub:`2`
+ - Y'\ :sub:`3`
+ * .. _V4L2-PIX-FMT-VYUY:
+
+ - ``V4L2_PIX_FMT_VYUY``
+ - 'VYUY'
+
+ - Cr\ :sub:`0`
+ - Y'\ :sub:`0`
+ - Cb\ :sub:`0`
+ - Y'\ :sub:`1`
+ - Cr\ :sub:`2`
+ - Y'\ :sub:`2`
+ - Cb\ :sub:`2`
+ - Y'\ :sub:`3`
+ * .. _V4L2-PIX-FMT-YUYV:
+
+ - ``V4L2_PIX_FMT_YUYV``
+ - 'YUYV'
+
+ - Y'\ :sub:`0`
+ - Cb\ :sub:`0`
+ - Y'\ :sub:`1`
+ - Cr\ :sub:`0`
+ - Y'\ :sub:`2`
+ - Cb\ :sub:`2`
+ - Y'\ :sub:`3`
+ - Cr\ :sub:`2`
+ * .. _V4L2-PIX-FMT-YVYU:
+
+ - ``V4L2_PIX_FMT_YVYU``
+ - 'YVYU'
+
+ - Y'\ :sub:`0`
+ - Cr\ :sub:`0`
+ - Y'\ :sub:`1`
+ - Cb\ :sub:`0`
+ - Y'\ :sub:`2`
+ - Cr\ :sub:`2`
+ - Y'\ :sub:`3`
+ - Cb\ :sub:`2`
+
+**Color Sample Location:**
+Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
+horizontally.
+
+
+4:1:1 Subsampling
+=================
+
+This format subsamples the chroma components horizontally by 4, storing 8
+pixels in 12 bytes.
+
+.. flat-table:: Packed YUV 4:1:1 Formats
+ :header-rows: 1
+ :stub-columns: 0
+
+ * - Identifier
+ - Code
+ - Byte 0
+ - Byte 1
+ - Byte 2
+ - Byte 3
+ - Byte 4
+ - Byte 5
+ - Byte 6
+ - Byte 7
+ - Byte 8
+ - Byte 9
+ - Byte 10
+ - Byte 11
+ * .. _V4L2-PIX-FMT-Y41P:
+
+ - ``V4L2_PIX_FMT_Y41P``
+ - 'Y41P'
+
+ - Cb\ :sub:`0`
+ - Y'\ :sub:`0`
+ - Cr\ :sub:`0`
+ - Y'\ :sub:`1`
+ - Cb\ :sub:`4`
+ - Y'\ :sub:`2`
+ - Cr\ :sub:`4`
+ - Y'\ :sub:`3`
+ - Y'\ :sub:`4`
+ - Y'\ :sub:`5`
+ - Y'\ :sub:`6`
+ - Y'\ :sub:`7`
+
+.. note::
+
+ Do not confuse ``V4L2_PIX_FMT_Y41P`` with
+ :ref:`V4L2_PIX_FMT_YUV411P <V4L2-PIX-FMT-YUV411P>`. Y41P is derived from
+ "YUV 4:1:1 *packed*", while YUV411P stands for "YUV 4:1:1 *planar*".
+
+**Color Sample Location:**
+Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
+horizontally.
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst b/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst
deleted file mode 100644
index 1abc3066b712..000000000000
--- a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst
+++ /dev/null
@@ -1,70 +0,0 @@
-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-UYVY:
-
-**************************
-V4L2_PIX_FMT_UYVY ('UYVY')
-**************************
-
-
-Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in
-memory
-
-
-Description
-===========
-
-In this format each four bytes is two pixels. Each four bytes is two
-Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr
-belong to both pixels. As you can see, the Cr and Cb components have
-half the horizontal resolution of the Y component.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-.. flat-table::
- :header-rows: 0
- :stub-columns: 0
-
- * - start + 0:
- - Cb\ :sub:`00`
- - Y'\ :sub:`00`
- - Cr\ :sub:`00`
- - Y'\ :sub:`01`
- - Cb\ :sub:`01`
- - Y'\ :sub:`02`
- - Cr\ :sub:`01`
- - Y'\ :sub:`03`
- * - start + 8:
- - Cb\ :sub:`10`
- - Y'\ :sub:`10`
- - Cr\ :sub:`10`
- - Y'\ :sub:`11`
- - Cb\ :sub:`11`
- - Y'\ :sub:`12`
- - Cr\ :sub:`11`
- - Y'\ :sub:`13`
- * - start + 16:
- - Cb\ :sub:`20`
- - Y'\ :sub:`20`
- - Cr\ :sub:`20`
- - Y'\ :sub:`21`
- - Cb\ :sub:`21`
- - Y'\ :sub:`22`
- - Cr\ :sub:`21`
- - Y'\ :sub:`23`
- * - start + 24:
- - Cb\ :sub:`30`
- - Y'\ :sub:`30`
- - Cr\ :sub:`30`
- - Y'\ :sub:`31`
- - Cb\ :sub:`31`
- - Y'\ :sub:`32`
- - Cr\ :sub:`31`
- - Y'\ :sub:`33`
-
-
-**Color Sample Location:**
-Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
-horizontally.
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst b/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst
deleted file mode 100644
index 4fd0630a83a4..000000000000
--- a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst
+++ /dev/null
@@ -1,70 +0,0 @@
-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-VYUY:
-
-**************************
-V4L2_PIX_FMT_VYUY ('VYUY')
-**************************
-
-
-Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in
-memory
-
-
-Description
-===========
-
-In this format each four bytes is two pixels. Each four bytes is two
-Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr
-belong to both pixels. As you can see, the Cr and Cb components have
-half the horizontal resolution of the Y component.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-.. flat-table::
- :header-rows: 0
- :stub-columns: 0
-
- * - start + 0:
- - Cr\ :sub:`00`
- - Y'\ :sub:`00`
- - Cb\ :sub:`00`
- - Y'\ :sub:`01`
- - Cr\ :sub:`01`
- - Y'\ :sub:`02`
- - Cb\ :sub:`01`
- - Y'\ :sub:`03`
- * - start + 8:
- - Cr\ :sub:`10`
- - Y'\ :sub:`10`
- - Cb\ :sub:`10`
- - Y'\ :sub:`11`
- - Cr\ :sub:`11`
- - Y'\ :sub:`12`
- - Cb\ :sub:`11`
- - Y'\ :sub:`13`
- * - start + 16:
- - Cr\ :sub:`20`
- - Y'\ :sub:`20`
- - Cb\ :sub:`20`
- - Y'\ :sub:`21`
- - Cr\ :sub:`21`
- - Y'\ :sub:`22`
- - Cb\ :sub:`21`
- - Y'\ :sub:`23`
- * - start + 24:
- - Cr\ :sub:`30`
- - Y'\ :sub:`30`
- - Cb\ :sub:`30`
- - Y'\ :sub:`31`
- - Cr\ :sub:`31`
- - Y'\ :sub:`32`
- - Cb\ :sub:`31`
- - Y'\ :sub:`33`
-
-
-**Color Sample Location:**
-Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
-horizontally.
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst
deleted file mode 100644
index bb83eb6db3e5..000000000000
--- a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst
+++ /dev/null
@@ -1,93 +0,0 @@
-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y41P:
-
-**************************
-V4L2_PIX_FMT_Y41P ('Y41P')
-**************************
-
-
-Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1
-
-
-Description
-===========
-
-In this format each 12 bytes is eight pixels. In the twelve bytes are
-two CbCr pairs and eight Y's. The first CbCr pair goes with the first
-four Y's, and the second CbCr pair goes with the other four Y's. The Cb
-and Cr components have one fourth the horizontal resolution of the Y
-component.
-
-Do not confuse this format with
-:ref:`V4L2_PIX_FMT_YUV411P <V4L2-PIX-FMT-YUV411P>`. Y41P is derived
-from "YUV 4:1:1 *packed*", while YUV411P stands for "YUV 4:1:1
-*planar*".
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
- :header-rows: 0
- :stub-columns: 0
-
- * - start + 0:
- - Cb\ :sub:`00`
- - Y'\ :sub:`00`
- - Cr\ :sub:`00`
- - Y'\ :sub:`01`
- - Cb\ :sub:`01`
- - Y'\ :sub:`02`
- - Cr\ :sub:`01`
- - Y'\ :sub:`03`
- - Y'\ :sub:`04`
- - Y'\ :sub:`05`
- - Y'\ :sub:`06`
- - Y'\ :sub:`07`
- * - start + 12:
- - Cb\ :sub:`10`
- - Y'\ :sub:`10`
- - Cr\ :sub:`10`
- - Y'\ :sub:`11`
- - Cb\ :sub:`11`
- - Y'\ :sub:`12`
- - Cr\ :sub:`11`
- - Y'\ :sub:`13`
- - Y'\ :sub:`14`
- - Y'\ :sub:`15`
- - Y'\ :sub:`16`
- - Y'\ :sub:`17`
- * - start + 24:
- - Cb\ :sub:`20`
- - Y'\ :sub:`20`
- - Cr\ :sub:`20`
- - Y'\ :sub:`21`
- - Cb\ :sub:`21`
- - Y'\ :sub:`22`
- - Cr\ :sub:`21`
- - Y'\ :sub:`23`
- - Y'\ :sub:`24`
- - Y'\ :sub:`25`
- - Y'\ :sub:`26`
- - Y'\ :sub:`27`
- * - start + 36:
- - Cb\ :sub:`30`
- - Y'\ :sub:`30`
- - Cr\ :sub:`30`
- - Y'\ :sub:`31`
- - Cb\ :sub:`31`
- - Y'\ :sub:`32`
- - Cr\ :sub:`31`
- - Y'\ :sub:`33`
- - Y'\ :sub:`34`
- - Y'\ :sub:`35`
- - Y'\ :sub:`36`
- - Y'\ :sub:`37`
-
-
-**Color Sample Location:**
-Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
-horizontally.
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst
deleted file mode 100644
index 4d5773922ba1..000000000000
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst
+++ /dev/null
@@ -1,73 +0,0 @@
-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-YUYV:
-
-**************************
-V4L2_PIX_FMT_YUYV ('YUYV')
-**************************
-
-
-Packed format with ½ horizontal chroma resolution, also known as YUV
-4:2:2
-
-
-Description
-===========
-
-In this format each four bytes is two pixels. Each four bytes is two
-Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr
-belong to both pixels. As you can see, the Cr and Cb components have
-half the horizontal resolution of the Y component. ``V4L2_PIX_FMT_YUYV``
-is known in the Windows environment as YUY2.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
- :header-rows: 0
- :stub-columns: 0
-
- * - start + 0:
- - Y'\ :sub:`00`
- - Cb\ :sub:`00`
- - Y'\ :sub:`01`
- - Cr\ :sub:`00`
- - Y'\ :sub:`02`
- - Cb\ :sub:`01`
- - Y'\ :sub:`03`
- - Cr\ :sub:`01`
- * - start + 8:
- - Y'\ :sub:`10`
- - Cb\ :sub:`10`
- - Y'\ :sub:`11`
- - Cr\ :sub:`10`
- - Y'\ :sub:`12`
- - Cb\ :sub:`11`
- - Y'\ :sub:`13`
- - Cr\ :sub:`11`
- * - start + 16:
- - Y'\ :sub:`20`
- - Cb\ :sub:`20`
- - Y'\ :sub:`21`
- - Cr\ :sub:`20`
- - Y'\ :sub:`22`
- - Cb\ :sub:`21`
- - Y'\ :sub:`23`
- - Cr\ :sub:`21`
- * - start + 24:
- - Y'\ :sub:`30`
- - Cb\ :sub:`30`
- - Y'\ :sub:`31`
- - Cr\ :sub:`30`
- - Y'\ :sub:`32`
- - Cb\ :sub:`31`
- - Y'\ :sub:`33`
- - Cr\ :sub:`31`
-
-
-**Color Sample Location:**
-Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
-horizontally.
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst b/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst
deleted file mode 100644
index 14b56b611349..000000000000
--- a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst
+++ /dev/null
@@ -1,70 +0,0 @@
-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-YVYU:
-
-**************************
-V4L2_PIX_FMT_YVYU ('YVYU')
-**************************
-
-
-Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in
-memory
-
-
-Description
-===========
-
-In this format each four bytes is two pixels. Each four bytes is two
-Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr
-belong to both pixels. As you can see, the Cr and Cb components have
-half the horizontal resolution of the Y component.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-.. flat-table::
- :header-rows: 0
- :stub-columns: 0
-
- * - start + 0:
- - Y'\ :sub:`00`
- - Cr\ :sub:`00`
- - Y'\ :sub:`01`
- - Cb\ :sub:`00`
- - Y'\ :sub:`02`
- - Cr\ :sub:`01`
- - Y'\ :sub:`03`
- - Cb\ :sub:`01`
- * - start + 8:
- - Y'\ :sub:`10`
- - Cr\ :sub:`10`
- - Y'\ :sub:`11`
- - Cb\ :sub:`10`
- - Y'\ :sub:`12`
- - Cr\ :sub:`11`
- - Y'\ :sub:`13`
- - Cb\ :sub:`11`
- * - start + 16:
- - Y'\ :sub:`20`
- - Cr\ :sub:`20`
- - Y'\ :sub:`21`
- - Cb\ :sub:`20`
- - Y'\ :sub:`22`
- - Cr\ :sub:`21`
- - Y'\ :sub:`23`
- - Cb\ :sub:`21`
- * - start + 24:
- - Y'\ :sub:`30`
- - Cr\ :sub:`30`
- - Y'\ :sub:`31`
- - Cb\ :sub:`30`
- - Y'\ :sub:`32`
- - Cr\ :sub:`31`
- - Y'\ :sub:`33`
- - Cb\ :sub:`31`
-
-
-**Color Sample Location:**
-Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>`
-horizontally.
diff --git a/Documentation/userspace-api/media/v4l/yuv-formats.rst b/Documentation/userspace-api/media/v4l/yuv-formats.rst
index 79a4fda566c6..a5b17040679e 100644
--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
+++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
@@ -276,11 +276,6 @@ image.
pixfmt-y8i
pixfmt-y12i
pixfmt-uv8
- pixfmt-yuyv
- pixfmt-uyvy
- pixfmt-yvyu
- pixfmt-vyuy
- pixfmt-y41p
pixfmt-yuv420
pixfmt-yuv420m
pixfmt-yuv422m
--
Regards,
Laurent Pinchart
