Re: [v4l-utils PATCH v2 2/3] libv4l2subdev: Add a function to list library supported pixel codes

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Sakari,

Thank you for the patch.

On Tuesday 08 December 2015 17:15:15 Sakari Ailus wrote:
> Also mark which format definitions are compat definitions for the
> pre-existing codes. This way we don't end up listing the same formats
> twice.

Wouldn't it be easier to add a function to return the whole array (and 
terminate it with an empty entry to avoid having to return both the array and 
the length=) ?

> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> ---
>  utils/media-ctl/libv4l2subdev.c | 69 +++++++++++++++++++++----------------
>  utils/media-ctl/v4l2subdev.h    | 11 +++++++
>  2 files changed, 50 insertions(+), 30 deletions(-)
> 
> diff --git a/utils/media-ctl/libv4l2subdev.c
> b/utils/media-ctl/libv4l2subdev.c index 5bcfe34..2cd8fd4 100644
> --- a/utils/media-ctl/libv4l2subdev.c
> +++ b/utils/media-ctl/libv4l2subdev.c
> @@ -718,38 +718,39 @@ int v4l2_subdev_parse_setup_formats(struct
> media_device *media, const char *p) static struct {
>  	const char *name;
>  	enum v4l2_mbus_pixelcode code;
> +	bool compat;
>  } mbus_formats[] = {
>  #include "media-bus-formats.h"
> -	{ "Y8", MEDIA_BUS_FMT_Y8_1X8},
> -	{ "Y10", MEDIA_BUS_FMT_Y10_1X10 },
> -	{ "Y12", MEDIA_BUS_FMT_Y12_1X12 },
> -	{ "YUYV", MEDIA_BUS_FMT_YUYV8_1X16 },
> -	{ "YUYV1_5X8", MEDIA_BUS_FMT_YUYV8_1_5X8 },
> -	{ "YUYV2X8", MEDIA_BUS_FMT_YUYV8_2X8 },
> -	{ "UYVY", MEDIA_BUS_FMT_UYVY8_1X16 },
> -	{ "UYVY1_5X8", MEDIA_BUS_FMT_UYVY8_1_5X8 },
> -	{ "UYVY2X8", MEDIA_BUS_FMT_UYVY8_2X8 },
> -	{ "VUY24", MEDIA_BUS_FMT_VUY8_1X24 },
> -	{ "SBGGR8", MEDIA_BUS_FMT_SBGGR8_1X8 },
> -	{ "SGBRG8", MEDIA_BUS_FMT_SGBRG8_1X8 },
> -	{ "SGRBG8", MEDIA_BUS_FMT_SGRBG8_1X8 },
> -	{ "SRGGB8", MEDIA_BUS_FMT_SRGGB8_1X8 },
> -	{ "SBGGR10", MEDIA_BUS_FMT_SBGGR10_1X10 },
> -	{ "SGBRG10", MEDIA_BUS_FMT_SGBRG10_1X10 },
> -	{ "SGRBG10", MEDIA_BUS_FMT_SGRBG10_1X10 },
> -	{ "SRGGB10", MEDIA_BUS_FMT_SRGGB10_1X10 },
> -	{ "SBGGR10_DPCM8", MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8 },
> -	{ "SGBRG10_DPCM8", MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8 },
> -	{ "SGRBG10_DPCM8", MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8 },
> -	{ "SRGGB10_DPCM8", MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8 },
> -	{ "SBGGR12", MEDIA_BUS_FMT_SBGGR12_1X12 },
> -	{ "SGBRG12", MEDIA_BUS_FMT_SGBRG12_1X12 },
> -	{ "SGRBG12", MEDIA_BUS_FMT_SGRBG12_1X12 },
> -	{ "SRGGB12", MEDIA_BUS_FMT_SRGGB12_1X12 },
> -	{ "AYUV32", MEDIA_BUS_FMT_AYUV8_1X32 },
> -	{ "RBG24", MEDIA_BUS_FMT_RBG888_1X24 },
> -	{ "RGB32", MEDIA_BUS_FMT_RGB888_1X32_PADHI },
> -	{ "ARGB32", MEDIA_BUS_FMT_ARGB8888_1X32 },
> +	{ "Y8", MEDIA_BUS_FMT_Y8_1X8, true },
> +	{ "Y10", MEDIA_BUS_FMT_Y10_1X10, true },
> +	{ "Y12", MEDIA_BUS_FMT_Y12_1X12, true },
> +	{ "YUYV", MEDIA_BUS_FMT_YUYV8_1X16, true },
> +	{ "YUYV1_5X8", MEDIA_BUS_FMT_YUYV8_1_5X8, true },
> +	{ "YUYV2X8", MEDIA_BUS_FMT_YUYV8_2X8, true },
> +	{ "UYVY", MEDIA_BUS_FMT_UYVY8_1X16, true },
> +	{ "UYVY1_5X8", MEDIA_BUS_FMT_UYVY8_1_5X8, true },
> +	{ "UYVY2X8", MEDIA_BUS_FMT_UYVY8_2X8, true },
> +	{ "VUY24", MEDIA_BUS_FMT_VUY8_1X24, true },
> +	{ "SBGGR8", MEDIA_BUS_FMT_SBGGR8_1X8, true },
> +	{ "SGBRG8", MEDIA_BUS_FMT_SGBRG8_1X8, true },
> +	{ "SGRBG8", MEDIA_BUS_FMT_SGRBG8_1X8, true },
> +	{ "SRGGB8", MEDIA_BUS_FMT_SRGGB8_1X8, true },
> +	{ "SBGGR10", MEDIA_BUS_FMT_SBGGR10_1X10, true },
> +	{ "SGBRG10", MEDIA_BUS_FMT_SGBRG10_1X10, true },
> +	{ "SGRBG10", MEDIA_BUS_FMT_SGRBG10_1X10, true },
> +	{ "SRGGB10", MEDIA_BUS_FMT_SRGGB10_1X10, true },
> +	{ "SBGGR10_DPCM8", MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, true },
> +	{ "SGBRG10_DPCM8", MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, true },
> +	{ "SGRBG10_DPCM8", MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, true },
> +	{ "SRGGB10_DPCM8", MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, true },
> +	{ "SBGGR12", MEDIA_BUS_FMT_SBGGR12_1X12, true },
> +	{ "SGBRG12", MEDIA_BUS_FMT_SGBRG12_1X12, true },
> +	{ "SGRBG12", MEDIA_BUS_FMT_SGRBG12_1X12, true },
> +	{ "SRGGB12", MEDIA_BUS_FMT_SRGGB12_1X12, true },
> +	{ "AYUV32", MEDIA_BUS_FMT_AYUV8_1X32, true },
> +	{ "RBG24", MEDIA_BUS_FMT_RBG888_1X24, true },
> +	{ "RGB32", MEDIA_BUS_FMT_RGB888_1X32_PADHI, true },
> +	{ "ARGB32", MEDIA_BUS_FMT_ARGB8888_1X32, true },
>  };
> 
>  const char *v4l2_subdev_pixelcode_to_string(enum v4l2_mbus_pixelcode code)
> @@ -823,3 +824,11 @@ enum v4l2_field v4l2_subdev_string_to_field(const char
> *string,
> 
>  	return fields[i].field;
>  }
> +
> +enum v4l2_mbus_pixelcode v4l2_subdev_pixelcode_list(unsigned int i)
> +{
> +	if (i >= ARRAY_SIZE(mbus_formats) || mbus_formats[i].compat)
> +		return (enum v4l2_mbus_pixelcode)-1;
> +
> +	return mbus_formats[i].code;
> +}
> diff --git a/utils/media-ctl/v4l2subdev.h b/utils/media-ctl/v4l2subdev.h
> index 104e420..ef8ef95 100644
> --- a/utils/media-ctl/v4l2subdev.h
> +++ b/utils/media-ctl/v4l2subdev.h
> @@ -279,4 +279,15 @@ const char *v4l2_subdev_field_to_string(enum v4l2_field
> field); enum v4l2_field v4l2_subdev_string_to_field(const char *string,
>  					    unsigned int length);
> 
> +/**
> + * @brief Enumerate library supported media bus pixel codes.
> + * @param i - index starting from zero
> + *
> + * Enumerate pixel codes supported by libv4l2subdev starting from
> + * index 0.
> + *
> + * @return media bus pixelcode on success, -1 on failure.
> + */
> +enum v4l2_mbus_pixelcode v4l2_subdev_pixelcode_list(unsigned int i);
> +
>  #endif

-- 
Regards,

Laurent Pinchart