Hi Robert,
On Wednesday 02 March 2011 15:08:49 Robert Lukassen wrote:
> Hi,
>
> I have a request to add support for a particular pixel-format (RGB565) to
> the list of recognized formats in UVC. This format is known in video for
> linux, but UVC does not list it.
>
> Here are the (rather minimal) patches with respect to the latest version of
> the UVC driver as used in Ubuntu 10.04 (kernel 2.6.32-28):
Thanks for the patch.
> diff -uN /usr/src/linux-source-2.6.32/drivers/media/video/uvc/uvc_driver.c
> uvc-new/uvc_driver.c
> ---
> /usr/src/linux-source-2.6.32/drivers/media/video/uvc/uvc_driver.c 2009-12-
> 03 04:51:21.000000000 +0100
> +++ uvc-new/uvc_driver.c 2011-03-02 14:54:36.000000000 +0100
> @@ -92,6 +92,11 @@
> .guid = UVC_GUID_FORMAT_BY8,
> .fcc = V4L2_PIX_FMT_SBGGR8,
> },
> + {
> + .name = "RGB565",
> + .guid = UVC_GUID_FORMAT_RGBP,
> + .fcc = V4L2_PIX_FMT_RGB565,
> + },
> };
>
> /*
> ------------------------------------------------------------------------
> diff -uN /usr/src/linux-source-2.6.32/drivers/media/video/uvc/uvcvideo.h
> uvc-new/uvcvideo.h
> ---
> /usr/src/linux-source-2.6.32/drivers/media/video/uvc/uvcvideo.h
> 2009-12-03
> 04:51:21.000000000 +0100
> +++ uvc-new/uvcvideo.h 2011-03-02 14:55:14.000000000 +0100
> @@ -130,7 +130,9 @@
> #define UVC_GUID_FORMAT_BY8 \
> { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
> 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> -
> +#define UVC_GUID_FORMAT_RGBP \
> + { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
> + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
>
> /*
> ------------------------------------------------------------------------ *
> Driver specific constants.
>
> There is a product in the market that uses this pixel format, but as the
> RGBP format is not supported out-of-the-box by UVC, we need to patch the
> kernel driver each time we go along with a kernel upgrade.
Can I ask you which product ?
--
Regards,
Laurent Pinchart
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