Re: [PATCH v6 2/3] v4l: Add 10/16-bits per channel YUV pixel formats
On 04/18/2017 03:33 AM, Mauro Carvalho Chehab wrote:
Em Sun, 5 Mar 2017 18:00:32 +0800
Randy Li escreveu:
The formats added by this patch are:
V4L2_PIX_FMT_P010
V4L2_PIX_FMT_P010M
V4L2_PIX_FMT_P016
V4L2_PIX_FMT_P016M
Currently, none of driver uses those format.
Also a variant of V4L2_PIX_FMT_P010M pixel format is added.
The V4L2_PIX_FMT_P010CM is a compat variant of the V4L2_PIX_FMT_P010,
Some developers from Gstreamer think it should be renamed as CM10 for
the P010CM, I don't have much idea about that.
which uses the unused 6 bits to store the next pixel. And with
the alignment requirement of the hardware, it usually would be
some extra space left at the end of a stride.
You should check your patches with checkpatch... I'm getting
this:
WARNING: 'simliar' may be misspelled - perhaps 'similar'?
#61: FILE: Documentation/media/uapi/v4l/pixfmt-p010.rst:13:
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
I am sorry about that
WARNING: 'simliar' may be misspelled - perhaps 'similar'?
#334: FILE: Documentation/media/uapi/v4l/pixfmt-p016.rst:13:
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
Signed-off-by: Randy Li
---
Documentation/media/uapi/v4l/pixfmt-p010.rst | 126
Documentation/media/uapi/v4l/pixfmt-p010m.rst | 135 ++
Documentation/media/uapi/v4l/pixfmt-p016.rst | 125
Documentation/media/uapi/v4l/pixfmt-p016m.rst | 134 +
Documentation/media/uapi/v4l/yuv-formats.rst | 4 +
include/uapi/linux/videodev2.h| 5 +
6 files changed, 529 insertions(+)
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010m.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016m.rst
diff --git a/Documentation/media/uapi/v4l/pixfmt-p010.rst
b/Documentation/media/uapi/v4l/pixfmt-p010.rst
new file mode 100644
index 000..59ed118
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-p010.rst
@@ -0,0 +1,126 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-P010:
+
+**
+V4L2_PIX_FMT_P010 ('P010')
+**
+
+
+V4L2_PIX_FMT_P010
+Formats with ½ horizontal and vertical chroma resolution. One luminance and
+one chrominance plane with alternating
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
It is probably ok to use the UTF symbol for 1/2, but you should check
if both PDF and HTML outputs will be ok.
I see, I would upload a new version later
+
+
+Description
+===
+
+It is a two-plane versions of the YUV 4:2:0 format. The three
+components are separated into two sub-images or planes. The Y plane is
+first. The Y plane has 16 bits per pixel, but only 10 bits are used with the
+rest 6 bits set to zero. For ``V4L2_PIX_FMT_P010``, a combined CbCr plane
+immediately follows the Y plane in memory. The CbCr
+plane is the same width, in bytes, as the Y plane (and of the image),
+but is half as tall in pixels. Each CbCr pair belongs to four pixels.
+For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`,
+Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`.
+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 two bytes.
+
+
+.. 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`
+
+
+**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
+* -
+* - 2
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+* -
+ -
+ - C
+ -
+ -
+ - C
+ -
+* - 3
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
diff --git a/Documentation/media/uapi/v4l/pixfmt-p010m.rst
b/Documentation/media/uapi/v4l/pixfmt-p010m.rst
new file mode 100644
index 000..6697d15
--- /dev/
Re: [PATCH v6 2/3] v4l: Add 10/16-bits per channel YUV pixel formats
Em Sun, 5 Mar 2017 18:00:32 +0800
Randy Li escreveu:
> The formats added by this patch are:
> V4L2_PIX_FMT_P010
> V4L2_PIX_FMT_P010M
> V4L2_PIX_FMT_P016
> V4L2_PIX_FMT_P016M
> Currently, none of driver uses those format.
>
> Also a variant of V4L2_PIX_FMT_P010M pixel format is added.
> The V4L2_PIX_FMT_P010CM is a compat variant of the V4L2_PIX_FMT_P010,
> which uses the unused 6 bits to store the next pixel. And with
> the alignment requirement of the hardware, it usually would be
> some extra space left at the end of a stride.
You should check your patches with checkpatch... I'm getting
this:
WARNING: 'simliar' may be misspelled - perhaps 'similar'?
#61: FILE: Documentation/media/uapi/v4l/pixfmt-p010.rst:13:
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
WARNING: 'simliar' may be misspelled - perhaps 'similar'?
#334: FILE: Documentation/media/uapi/v4l/pixfmt-p016.rst:13:
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
>
> Signed-off-by: Randy Li
> ---
> Documentation/media/uapi/v4l/pixfmt-p010.rst | 126
> Documentation/media/uapi/v4l/pixfmt-p010m.rst | 135
> ++
> Documentation/media/uapi/v4l/pixfmt-p016.rst | 125
> Documentation/media/uapi/v4l/pixfmt-p016m.rst | 134 +
> Documentation/media/uapi/v4l/yuv-formats.rst | 4 +
> include/uapi/linux/videodev2.h| 5 +
> 6 files changed, 529 insertions(+)
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010.rst
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010m.rst
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016.rst
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016m.rst
>
> diff --git a/Documentation/media/uapi/v4l/pixfmt-p010.rst
> b/Documentation/media/uapi/v4l/pixfmt-p010.rst
> new file mode 100644
> index 000..59ed118
> --- /dev/null
> +++ b/Documentation/media/uapi/v4l/pixfmt-p010.rst
> @@ -0,0 +1,126 @@
> +.. -*- coding: utf-8; mode: rst -*-
> +
> +.. _V4L2-PIX-FMT-P010:
> +
> +**
> +V4L2_PIX_FMT_P010 ('P010')
> +**
> +
> +
> +V4L2_PIX_FMT_P010
> +Formats with ½ horizontal and vertical chroma resolution. One luminance and
> +one chrominance plane with alternating
> +chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
It is probably ok to use the UTF symbol for 1/2, but you should check
if both PDF and HTML outputs will be ok.
> +
> +
> +Description
> +===
> +
> +It is a two-plane versions of the YUV 4:2:0 format. The three
> +components are separated into two sub-images or planes. The Y plane is
> +first. The Y plane has 16 bits per pixel, but only 10 bits are used with the
> +rest 6 bits set to zero. For ``V4L2_PIX_FMT_P010``, a combined CbCr plane
> +immediately follows the Y plane in memory. The CbCr
> +plane is the same width, in bytes, as the Y plane (and of the image),
> +but is half as tall in pixels. Each CbCr pair belongs to four pixels.
> +For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`,
> +Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`.
> +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 two bytes.
> +
> +
> +.. 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`
> +
> +
> +**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
> +* -
> +* - 2
> + - Y
> + -
> + - Y
> + - Y
> + -
> + - Y
> +* -
> + -
> + - C
> + -
> + -
> + - C
> + -
> +* - 3
> + - Y
> + -
> + - Y
> + - Y
> + -
> + - Y
> diff --git a/Documentation/media/uapi/v4l/pixfmt-p010m.rst
> b/Documentation/media/uapi/v4l/pixfmt-p
[PATCH v6 2/3] v4l: Add 10/16-bits per channel YUV pixel formats
The formats added by this patch are:
V4L2_PIX_FMT_P010
V4L2_PIX_FMT_P010M
V4L2_PIX_FMT_P016
V4L2_PIX_FMT_P016M
Currently, none of driver uses those format.
Also a variant of V4L2_PIX_FMT_P010M pixel format is added.
The V4L2_PIX_FMT_P010CM is a compat variant of the V4L2_PIX_FMT_P010,
which uses the unused 6 bits to store the next pixel. And with
the alignment requirement of the hardware, it usually would be
some extra space left at the end of a stride.
Signed-off-by: Randy Li
---
Documentation/media/uapi/v4l/pixfmt-p010.rst | 126
Documentation/media/uapi/v4l/pixfmt-p010m.rst | 135 ++
Documentation/media/uapi/v4l/pixfmt-p016.rst | 125
Documentation/media/uapi/v4l/pixfmt-p016m.rst | 134 +
Documentation/media/uapi/v4l/yuv-formats.rst | 4 +
include/uapi/linux/videodev2.h| 5 +
6 files changed, 529 insertions(+)
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p010m.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-p016m.rst
diff --git a/Documentation/media/uapi/v4l/pixfmt-p010.rst
b/Documentation/media/uapi/v4l/pixfmt-p010.rst
new file mode 100644
index 000..59ed118
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-p010.rst
@@ -0,0 +1,126 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-P010:
+
+**
+V4L2_PIX_FMT_P010 ('P010')
+**
+
+
+V4L2_PIX_FMT_P010
+Formats with ½ horizontal and vertical chroma resolution. One luminance and
+one chrominance plane with alternating
+chroma samples as simliar to ``V4L2_PIX_FMT_NV12``
+
+
+Description
+===
+
+It is a two-plane versions of the YUV 4:2:0 format. The three
+components are separated into two sub-images or planes. The Y plane is
+first. The Y plane has 16 bits per pixel, but only 10 bits are used with the
+rest 6 bits set to zero. For ``V4L2_PIX_FMT_P010``, a combined CbCr plane
+immediately follows the Y plane in memory. The CbCr
+plane is the same width, in bytes, as the Y plane (and of the image),
+but is half as tall in pixels. Each CbCr pair belongs to four pixels.
+For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`,
+Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`.
+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 two bytes.
+
+
+.. 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`
+
+
+**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
+* -
+* - 2
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
+* -
+ -
+ - C
+ -
+ -
+ - C
+ -
+* - 3
+ - Y
+ -
+ - Y
+ - Y
+ -
+ - Y
diff --git a/Documentation/media/uapi/v4l/pixfmt-p010m.rst
b/Documentation/media/uapi/v4l/pixfmt-p010m.rst
new file mode 100644
index 000..6697d15
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-p010m.rst
@@ -0,0 +1,135 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-P010M:
+
+***
+V4L2_PIX_FMT_P010M ('PM10')
+***
+
+
+V4L2_PIX_FMT_P010M
+Variation of ``V4L2_PIX_FMT_P010`` with planes non contiguous in memory.
+
+
+Description
+===
+
+This is a multi-planar, two-plane version of the YUV 4:2:0 format. The
+three components are separated into two sub-images or planes.
+``V4L2_PIX_FMT_P010M`` differs from ``V4L2_PIX_FMT_P010`` in that the
+two planes are non-contiguous in memory, i.e. the chroma plane do not
+necessarily immediately follows the luma plane. The luminance data
+occupies the first plane.
