On Mon, Sep 23, 2019 at 08:38:50PM +0800, Sandy Huang wrote:
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 3feeaa3..5fe89e9 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -266,6 +266,21 @@ extern "C" {
> #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
>
> /*
> + * 2 plane YCbCr 10bit
> + * index 0 = Y plane, [9:0] Y
> + * index 1 = Cr:Cb plane, [19:0] Cr:Cb little endian
> + * or
> + * index 1 = Cb:Cr plane, [19:0] Cb:Cr little endian
What does "little endian" even mean for these?
> + */
> +
> +#define DRM_FORMAT_NV12_10 fourcc_code('N', 'A', '1', '2') /* 2x2 subsampled Cr:Cb plane */
> +#define DRM_FORMAT_NV21_10 fourcc_code('N', 'A', '2', '1') /* 2x2 subsampled Cb:Cr plane */
> +#define DRM_FORMAT_NV16_10 fourcc_code('N', 'A', '1', '6') /* 2x1 subsampled Cr:Cb plane */
> +#define DRM_FORMAT_NV61_10 fourcc_code('N', 'A', '6', '1') /* 2x1 subsampled Cb:Cr plane */
> +#define DRM_FORMAT_NV24_10 fourcc_code('N', 'A', '2', '4') /* non-subsampled Cr:Cb plane */
> +#define DRM_FORMAT_NV42_10 fourcc_code('N', 'A', '4', '2') /* non-subsampled Cb:Cr plane */
> +
> +/*
> * 3 plane YCbCr
> * index 0: Y plane, [7:0] Y
> * index 1: Cb plane, [7:0] Cb
> --
> 2.7.4
>
>
>
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--
Ville Syrjälä
Intel
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