On 08/02/2013 03:03 AM, Laurent Pinchart wrote:
> NV16M and NV61M are planar YCbCr 4:2:2 and YCrCb 4:2:2 formats with a
> luma plane followed by an interleaved chroma plane. The planes are not
> required to be contiguous in memory, and the formats can only be used
> with the multi-planar formats API.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> Reviewed-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Reviewed-by: Sakari Ailus <sakari.ailus@xxxxxx>
Just a few small changes below. Once that is corrected you can add my:
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Regards,
Hans
> ---
> Documentation/DocBook/media/v4l/pixfmt-nv16m.xml | 171 +++++++++++++++++++++++
> Documentation/DocBook/media/v4l/pixfmt.xml | 1 +
> include/uapi/linux/videodev2.h | 2 +
> 3 files changed, 174 insertions(+)
> create mode 100644 Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
>
> diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml b/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
> new file mode 100644
> index 0000000..afec039
> --- /dev/null
> +++ b/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
> @@ -0,0 +1,171 @@
> + <refentry>
> + <refmeta>
> + <refentrytitle>V4L2_PIX_FMT_NV16M ('NM16'), V4L2_PIX_FMT_NV61M ('NM61')</refentrytitle>
> + &manvol;
> + </refmeta>
> + <refnamediv>
> + <refname id="V4L2-PIX-FMT-NV16M"><constant>V4L2_PIX_FMT_NV16M</constant></refname>
> + <refname id="V4L2-PIX-FMT-NV61M"><constant>V4L2_PIX_FMT_NV61M</constant></refname>
> + <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV16</constant> and <constant>V4L2_PIX_FMT_NV61</constant> with planes
> + non contiguous in memory. </refpurpose>
> + </refnamediv>
> + <refsect1>
> + <title>Description</title>
> +
> + <para>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.
> +<constant>V4L2_PIX_FMT_NV16M</constant> differs from <constant>V4L2_PIX_FMT_NV16
> +</constant> in that the two planes are non-contiguous in memory, i.e. the chroma
> +plane do not necessarily immediately follows the luma plane.
s/do/does/
> +The luminance data occupies the first plane. The Y plane has one byte per pixel.
> +In the second plane there is a chrominance data with alternating chroma samples.
s/is a/is/
> +The CbCr plane is the same width and height, in bytes, as the Y plane.
> +Each CbCr pair belongs to four pixels. For example,
> +Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to
> +Y'<subscript>00</subscript>, Y'<subscript>01</subscript>,
> +Y'<subscript>10</subscript>, Y'<subscript>11</subscript>.
> +<constant>V4L2_PIX_FMT_NV61M</constant> is the same as <constant>V4L2_PIX_FMT_NV16M</constant>
> +except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</para>
Regards,
Hans
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
