Hi Sakari,
Thanks for the patch.
On Wednesday 11 January 2012 22:26:46 Sakari Ailus wrote:
> Add three other colour orders for 10-bit to 8-bit DPCM compressed formats.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
> ---
> Documentation/DocBook/media/v4l/pixfmt-srggb10.xml | 2 +-
> .../DocBook/media/v4l/pixfmt-srggb10dpcm8.xml | 29
> ++++++++++++++++++++ Documentation/DocBook/media/v4l/pixfmt.xml |
> 1 +
> include/linux/videodev2.h | 3 ++
> 4 files changed, 34 insertions(+), 1 deletions(-)
> create mode 100644 Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
>
> diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml
> b/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml index
> 7b27409..c1c62a9 100644
> --- a/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml
> +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10.xml
> @@ -1,4 +1,4 @@
> - <refentry>
> + <refentry id="pixfmt-srggb10">
> <refmeta>
> <refentrytitle>V4L2_PIX_FMT_SRGGB10 ('RG10'),
> V4L2_PIX_FMT_SGRBG10 ('BA10'),
> diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
> b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml new file mode
> 100644
> index 0000000..985440c
> --- /dev/null
> +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
> @@ -0,0 +1,29 @@
> + <refentry>
> + <refmeta>
> + <refentrytitle>
> + V4L2_PIX_FMT_SRGGB10DPCM8 ('bBA8'),
> + V4L2_PIX_FMT_SGBRG10DPCM8 ('bGA8'),
> + V4L2_PIX_FMT_SGRBG10DPCM8 ('BD10'),
> + V4L2_PIX_FMT_SBGGR10DPCM8 ('bRA8'),
Could you briefly explain the rationale behind the FOURCCs in the patch commit
message ? Manjunath needs similar FOURCCs for A-law compression, what should
he use ?
> + </refentrytitle>
> + &manvol;
> + </refmeta>
> + <refnamediv>
> + <refname
> id="V4L2-PIX-FMT-SRGGB10DPCM8"><constant>V4L2_PIX_FMT_SRGGB10DPCM8</consta
> nt></refname> + <refname
> id="V4L2-PIX-FMT-SGRBG10DPCM8"><constant>V4L2_PIX_FMT_SGRBG10DPCM8</consta
> nt></refname> + <refname
> id="V4L2-PIX-FMT-SGBRG10DPCM8"><constant>V4L2_PIX_FMT_SGBRG10DPCM8</consta
> nt></refname> + <refname
> id="V4L2-PIX-FMT-SBGGR10DPCM8"><constant>V4L2_PIX_FMT_SBGGR10DPCM8</consta
> nt></refname> + <refpurpose>10-bit Bayer formats compressed to 8
> bits</refpurpose> + </refnamediv>
> + <refsect1>
> + <title>Description</title>
> +
> + <para>The following four pixel formats are raw sRGB / Bayer
> + formats with 10 bits per colour compressed to 8 bits each,
> + using the DPCM. DPCM, differential pulse-code modulation, is
s/the DPCM/DPCM/ ?
> + lossy. Each colour component consumes 8 bits of memory. In
> + other respects this format is similar to
> + <xref linkend="pixfmt-srggb10">.</xref></para>
> +
> + </refsect1>
> + </refentry>
> diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml
> b/Documentation/DocBook/media/v4l/pixfmt.xml index 2ff6b77..9b06c7b 100644
> --- a/Documentation/DocBook/media/v4l/pixfmt.xml
> +++ b/Documentation/DocBook/media/v4l/pixfmt.xml
> @@ -673,6 +673,7 @@ access the palette, this must be done with ioctls of
> the Linux framebuffer API.< &sub-srggb8;
> &sub-sbggr16;
> &sub-srggb10;
> + &sub-srggb10dpcm8;
> &sub-srggb12;
> </section>
>
> diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
> index c9d07c7..c5bf1db 100644
> --- a/include/linux/videodev2.h
> +++ b/include/linux/videodev2.h
> @@ -365,7 +365,10 @@ struct v4l2_pix_format {
> #define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12 GRGR..
> BGBG.. */ #define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /*
> 12 RGRG.. GBGB.. */ /* 10bit raw bayer DPCM compressed to 8 bits */
> +#define V4L2_PIX_FMT_SBGGR10DPCM8 v4l2_fourcc('b', 'B', 'A', '8')
> +#define V4L2_PIX_FMT_SGBRG10DPCM8 v4l2_fourcc('b', 'G', 'A', '8')
> #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
> +#define V4L2_PIX_FMT_SRGGB10DPCM8 v4l2_fourcc('b', 'R', 'A', '8')
> /*
> * 10bit raw bayer, expanded to 16 bits
> * xxxxrrrrrrrrrrxxxxgggggggggg xxxxggggggggggxxxxbbbbbbbbbb...
--
Regards,
Laurent Pinchart
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