Hi Sakari,
Thanks for the review.
On Thursday 02 August 2012 05:59 AM, Sakari Ailus wrote:
> Hi Prabhakar,
>
> Thanks for the patch.
>
> On Fri, Jul 27, 2012 at 04:25:05PM +0530, Prabhakar Lad wrote:
>> From: Manjunath Hadli <manjunath.ha...@ti.com>
>>
>> add new macro V4L2_PIX_FMT_SGRBG10ALAW8 and associated formats
>> to represent Bayer format frames compressed by A-LAW algorithm,
>> add V4L2_PIX_FMT_UV8 to represent storage of CbCr data (UV interleaved)
>> only.
>>
>> Signed-off-by: Manjunath Hadli <manjunath.ha...@ti.com>
>> Signed-off-by: Lad, Prabhakar <prabhakar....@ti.com>
>> Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
>> Cc: Sakari Ailus <sakari.ai...@iki.fi>
>> Cc: Hans Verkuil <hans.verk...@cisco.com>
>> Cc: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
>> ---
>> .../DocBook/media/v4l/pixfmt-srggb10alaw8.xml | 34 +++++++++++
>> Documentation/DocBook/media/v4l/pixfmt-uv8.xml | 62
>> ++++++++++++++++++++
>> Documentation/DocBook/media/v4l/pixfmt.xml | 2 +
>> include/linux/videodev2.h | 8 +++
>> 4 files changed, 106 insertions(+), 0 deletions(-)
>> create mode 100644 Documentation/DocBook/media/v4l/pixfmt-srggb10alaw8.xml
>> create mode 100644 Documentation/DocBook/media/v4l/pixfmt-uv8.xml
>>
>> diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10alaw8.xml
>> b/Documentation/DocBook/media/v4l/pixfmt-srggb10alaw8.xml
>> new file mode 100644
>> index 0000000..c934192
>> --- /dev/null
>> +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10alaw8.xml
>> @@ -0,0 +1,34 @@
>> + <refentry>
>> + <refmeta>
>> + <refentrytitle>
>> + V4L2_PIX_FMT_SBGGR10ALAW8 ('aBA8'),
>> + V4L2_PIX_FMT_SGBRG10ALAW8 ('aGA8'),
>> + V4L2_PIX_FMT_SGRBG10ALAW8 ('agA8'),
>> + V4L2_PIX_FMT_SRGGB10ALAW8 ('aRA8'),
>> + </refentrytitle>
>> + &manvol;
>> + </refmeta>
>> + <refnamediv>
>> + <refname id="V4L2-PIX-FMT-SBGGR10ALAW8">
>> + <constant>V4L2_PIX_FMT_SBGGR10ALAW8</constant>
>> + </refname>
>> + <refname id="V4L2-PIX-FMT-SGBRG10ALAW8">
>> + <constant>V4L2_PIX_FMT_SGBRG10ALAW8</constant>
>> + </refname>
>> + <refname id="V4L2-PIX-FMT-SGRBG10ALAW8">
>> + <constant>V4L2_PIX_FMT_SGRBG10ALAW8</constant>
>> + </refname>
>> + <refname id="V4L2-PIX-FMT-SRGGB10ALAW8">
>> + <constant>V4L2_PIX_FMT_SRGGB10ALAW8</constant>
>> + </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 color compressed to 8 bits each,
>> + using the A-LAW algorithm. Each color component consumes 8
>> + bits of memory. In other respects this format is similar to
>> + <xref linkend="V4L2-PIX-FMT-SRGGB8">.</xref></para>
>> + </refsect1>
>> + </refentry>
>> diff --git a/Documentation/DocBook/media/v4l/pixfmt-uv8.xml
>> b/Documentation/DocBook/media/v4l/pixfmt-uv8.xml
>> new file mode 100644
>> index 0000000..c507c1f
>> --- /dev/null
>> +++ b/Documentation/DocBook/media/v4l/pixfmt-uv8.xml
>> @@ -0,0 +1,62 @@
>> + <refentry id="V4L2-PIX-FMT-UV8">
>> + <refmeta>
>> + <refentrytitle>V4L2_PIX_FMT_UV8 ('UV8')</refentrytitle>
>> + &manvol;
>> + </refmeta>
>> + <refnamediv>
>> + <refname><constant>V4L2_PIX_FMT_UV8</constant></refname>
>> + <refpurpose>UV plane interleaved</refpurpose>
>> + </refnamediv>
>> + <refsect1>
>> + <title>Description</title>
>> + <para>In this format there is no Y plane, Only CbCr plane. ie
>> + (UV interleaved)</para>
>> + <example>
>> + <title>
>> + <constant>V4L2_PIX_FMT_UV8</constant>
>> + pixel image
>> + </title>
>> +
>> + <formalpara>
>> + <title>Byte Order.</title>
>> + <para>Each cell is one byte.
>> + <informaltable frame="none">
>> + <tgroup cols="5" align="center">
>> + <colspec align="left" colwidth="2*" />
>> + <tbody valign="top">
>> + <row>
>> + <entry>start + 0:</entry>
>> + <entry>Cb<subscript>00</subscript></entry>
>> + <entry>Cr<subscript>00</subscript></entry>
>> + <entry>Cb<subscript>01</subscript></entry>
>> + <entry>Cr<subscript>01</subscript></entry>
>> + </row>
>> + <row>
>> + <entry>start + 4:</entry>
>> + <entry>Cb<subscript>10</subscript></entry>
>> + <entry>Cr<subscript>10</subscript></entry>
>> + <entry>Cb<subscript>11</subscript></entry>
>> + <entry>Cr<subscript>11</subscript></entry>
>> + </row>
>> + <row>
>> + <entry>start + 8:</entry>
>> + <entry>Cb<subscript>20</subscript></entry>
>> + <entry>Cr<subscript>20</subscript></entry>
>> + <entry>Cb<subscript>21</subscript></entry>
>> + <entry>Cr<subscript>21</subscript></entry>
>> + </row>
>> + <row>
>> + <entry>start + 12:</entry>
>> + <entry>Cb<subscript>30</subscript></entry>
>> + <entry>Cr<subscript>30</subscript></entry>
>> + <entry>Cb<subscript>31</subscript></entry>
>> + <entry>Cr<subscript>31</subscript></entry>
>> + </row>
>> + </tbody>
>> + </tgroup>
>> + </informaltable>
>> + </para>
>> + </formalpara>
>> + </example>
>> + </refsect1>
>> + </refentry>
>> diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml
>> b/Documentation/DocBook/media/v4l/pixfmt.xml
>> index e58934c..930f55d 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-srggb10alaw8;
>> &sub-srggb10dpcm8;
>> &sub-srggb12;
>> </section>
>> @@ -701,6 +702,7 @@ information.</para>
>> &sub-y12;
>> &sub-y10b;
>> &sub-y16;
>> + &sub-uv8;
>> &sub-yuyv;
>> &sub-uyvy;
>> &sub-yvyu;
>> diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
>> index 5d78910..2cdf2c1 100644
>> --- a/include/linux/videodev2.h
>> +++ b/include/linux/videodev2.h
>> @@ -329,6 +329,9 @@ struct v4l2_pix_format {
>> /* Palette formats */
>> #define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit
>> palette */
>>
>> +/* Chrominance formats */
>> +#define V4L2_PIX_FMT_UV8 v4l2_fourcc('U', 'V', '8', ' ') /* 8 UV 4:4
>> */
>
> Is that an extra space I see on the line above? :)
>
Uhh missed it , I'll fix that for v8. With that fix can I add your Ack?
> Now that you're defining a new kind of a format, could you add a few lines
> about it to Documentation/video4linux/4CCs.txt, please? That may be a
> separate patch if you wish.
>
Yes sure, we will keep it as a separate patch. I need suggestion for
this (Hans, Laurent, Guennadi your views please).
Thx,
--Prabhakar Lad
>> /* Luminance+Chrominance formats */
>> #define V4L2_PIX_FMT_YVU410 v4l2_fourcc('Y', 'V', 'U', '9') /* 9 YVU
>> 4:1:0 */
>> #define V4L2_PIX_FMT_YVU420 v4l2_fourcc('Y', 'V', '1', '2') /* 12 YVU
>> 4:2:0 */
>> @@ -378,6 +381,11 @@ struct v4l2_pix_format {
>> #define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12 GBGB..
>> RGRG.. */
>> #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 a-law compressed to 8 bits */
>> +#define V4L2_PIX_FMT_SBGGR10ALAW8 v4l2_fourcc('a', 'B', 'A', '8')
>> +#define V4L2_PIX_FMT_SGBRG10ALAW8 v4l2_fourcc('a', 'G', 'A', '8')
>> +#define V4L2_PIX_FMT_SGRBG10ALAW8 v4l2_fourcc('a', 'g', 'A', '8')
>> +#define V4L2_PIX_FMT_SRGGB10ALAW8 v4l2_fourcc('a', 'R', 'A', '8')
>> /* 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')
>
> Kind regards,
>
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